diff --git a/lib/libpfctl/libpfctl.c b/lib/libpfctl/libpfctl.c index 8696ef1ace25..991d3fce9780 100644 --- a/lib/libpfctl/libpfctl.c +++ b/lib/libpfctl/libpfctl.c @@ -1,1460 +1,1462 @@ /*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2021 Rubicon Communications, LLC (Netgate) * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * * $FreeBSD$ */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include "libpfctl.h" const char* PFCTL_SYNCOOKIES_MODE_NAMES[] = { "never", "always", "adaptive" }; static int _pfctl_clear_states(int , const struct pfctl_kill *, unsigned int *, uint64_t); static void pf_nvuint_8_array(const nvlist_t *nvl, const char *name, size_t maxelems, uint8_t *numbers, size_t *nelems) { const uint64_t *tmp; size_t elems; tmp = nvlist_get_number_array(nvl, name, &elems); assert(elems <= maxelems); for (size_t i = 0; i < elems; i++) numbers[i] = tmp[i]; if (nelems) *nelems = elems; } static void pf_nvuint_16_array(const nvlist_t *nvl, const char *name, size_t maxelems, uint16_t *numbers, size_t *nelems) { const uint64_t *tmp; size_t elems; tmp = nvlist_get_number_array(nvl, name, &elems); assert(elems <= maxelems); for (size_t i = 0; i < elems; i++) numbers[i] = tmp[i]; if (nelems) *nelems = elems; } static void pf_nvuint_32_array(const nvlist_t *nvl, const char *name, size_t maxelems, uint32_t *numbers, size_t *nelems) { const uint64_t *tmp; size_t elems; tmp = nvlist_get_number_array(nvl, name, &elems); assert(elems <= maxelems); for (size_t i = 0; i < elems; i++) numbers[i] = tmp[i]; if (nelems) *nelems = elems; } static void pf_nvuint_64_array(const nvlist_t *nvl, const char *name, size_t maxelems, uint64_t *numbers, size_t *nelems) { const uint64_t *tmp; size_t elems; tmp = nvlist_get_number_array(nvl, name, &elems); assert(elems <= maxelems); for (size_t i = 0; i < elems; i++) numbers[i] = tmp[i]; if (nelems) *nelems = elems; } static void _pfctl_get_status_counters(const nvlist_t *nvl, struct pfctl_status_counters *counters) { const uint64_t *ids, *counts; const char *const *names; size_t id_len, counter_len, names_len; ids = nvlist_get_number_array(nvl, "ids", &id_len); counts = nvlist_get_number_array(nvl, "counters", &counter_len); names = nvlist_get_string_array(nvl, "names", &names_len); assert(id_len == counter_len); assert(counter_len == names_len); TAILQ_INIT(counters); for (size_t i = 0; i < id_len; i++) { struct pfctl_status_counter *c; c = malloc(sizeof(*c)); c->id = ids[i]; c->counter = counts[i]; c->name = strdup(names[i]); TAILQ_INSERT_TAIL(counters, c, entry); } } struct pfctl_status * pfctl_get_status(int dev) { struct pfioc_nv nv; struct pfctl_status *status; nvlist_t *nvl; size_t len; const void *chksum; status = calloc(1, sizeof(*status)); if (status == NULL) return (NULL); nv.data = malloc(4096); nv.len = nv.size = 4096; if (ioctl(dev, DIOCGETSTATUSNV, &nv)) { free(nv.data); free(status); return (NULL); } nvl = nvlist_unpack(nv.data, nv.len, 0); free(nv.data); if (nvl == NULL) { free(status); return (NULL); } status->running = nvlist_get_bool(nvl, "running"); status->since = nvlist_get_number(nvl, "since"); status->debug = nvlist_get_number(nvl, "debug"); status->hostid = ntohl(nvlist_get_number(nvl, "hostid")); status->states = nvlist_get_number(nvl, "states"); status->src_nodes = nvlist_get_number(nvl, "src_nodes"); strlcpy(status->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ); chksum = nvlist_get_binary(nvl, "chksum", &len); assert(len == PF_MD5_DIGEST_LENGTH); memcpy(status->pf_chksum, chksum, len); _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "counters"), &status->counters); _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "lcounters"), &status->lcounters); _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "fcounters"), &status->fcounters); _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "scounters"), &status->scounters); pf_nvuint_64_array(nvl, "pcounters", 2 * 2 * 3, (uint64_t *)status->pcounters, NULL); pf_nvuint_64_array(nvl, "bcounters", 2 * 2, (uint64_t *)status->bcounters, NULL); nvlist_destroy(nvl); return (status); } void pfctl_free_status(struct pfctl_status *status) { struct pfctl_status_counter *c, *tmp; TAILQ_FOREACH_SAFE(c, &status->counters, entry, tmp) { free(c->name); free(c); } TAILQ_FOREACH_SAFE(c, &status->lcounters, entry, tmp) { free(c->name); free(c); } TAILQ_FOREACH_SAFE(c, &status->fcounters, entry, tmp) { free(c->name); free(c); } TAILQ_FOREACH_SAFE(c, &status->scounters, entry, tmp) { free(c->name); free(c); } free(status); } static void pfctl_nv_add_addr(nvlist_t *nvparent, const char *name, const struct pf_addr *addr) { nvlist_t *nvl = nvlist_create(0); nvlist_add_binary(nvl, "addr", addr, sizeof(*addr)); nvlist_add_nvlist(nvparent, name, nvl); nvlist_destroy(nvl); } static void pf_nvaddr_to_addr(const nvlist_t *nvl, struct pf_addr *addr) { size_t len; const void *data; data = nvlist_get_binary(nvl, "addr", &len); assert(len == sizeof(struct pf_addr)); memcpy(addr, data, len); } static void pfctl_nv_add_addr_wrap(nvlist_t *nvparent, const char *name, const struct pf_addr_wrap *addr) { nvlist_t *nvl = nvlist_create(0); nvlist_add_number(nvl, "type", addr->type); nvlist_add_number(nvl, "iflags", addr->iflags); if (addr->type == PF_ADDR_DYNIFTL) nvlist_add_string(nvl, "ifname", addr->v.ifname); if (addr->type == PF_ADDR_TABLE) nvlist_add_string(nvl, "tblname", addr->v.tblname); pfctl_nv_add_addr(nvl, "addr", &addr->v.a.addr); pfctl_nv_add_addr(nvl, "mask", &addr->v.a.mask); nvlist_add_nvlist(nvparent, name, nvl); nvlist_destroy(nvl); } static void pf_nvaddr_wrap_to_addr_wrap(const nvlist_t *nvl, struct pf_addr_wrap *addr) { bzero(addr, sizeof(*addr)); addr->type = nvlist_get_number(nvl, "type"); addr->iflags = nvlist_get_number(nvl, "iflags"); if (addr->type == PF_ADDR_DYNIFTL) { strlcpy(addr->v.ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ); addr->p.dyncnt = nvlist_get_number(nvl, "dyncnt"); } if (addr->type == PF_ADDR_TABLE) { strlcpy(addr->v.tblname, nvlist_get_string(nvl, "tblname"), PF_TABLE_NAME_SIZE); addr->p.tblcnt = nvlist_get_number(nvl, "tblcnt"); } pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &addr->v.a.addr); pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "mask"), &addr->v.a.mask); } static void pfctl_nv_add_rule_addr(nvlist_t *nvparent, const char *name, const struct pf_rule_addr *addr) { uint64_t ports[2]; nvlist_t *nvl = nvlist_create(0); pfctl_nv_add_addr_wrap(nvl, "addr", &addr->addr); ports[0] = addr->port[0]; ports[1] = addr->port[1]; nvlist_add_number_array(nvl, "port", ports, 2); nvlist_add_number(nvl, "neg", addr->neg); nvlist_add_number(nvl, "port_op", addr->port_op); nvlist_add_nvlist(nvparent, name, nvl); nvlist_destroy(nvl); } static void pf_nvrule_addr_to_rule_addr(const nvlist_t *nvl, struct pf_rule_addr *addr) { pf_nvaddr_wrap_to_addr_wrap(nvlist_get_nvlist(nvl, "addr"), &addr->addr); pf_nvuint_16_array(nvl, "port", 2, addr->port, NULL); addr->neg = nvlist_get_number(nvl, "neg"); addr->port_op = nvlist_get_number(nvl, "port_op"); } static void pfctl_nv_add_mape(nvlist_t *nvparent, const char *name, const struct pf_mape_portset *mape) { nvlist_t *nvl = nvlist_create(0); nvlist_add_number(nvl, "offset", mape->offset); nvlist_add_number(nvl, "psidlen", mape->psidlen); nvlist_add_number(nvl, "psid", mape->psid); nvlist_add_nvlist(nvparent, name, nvl); nvlist_destroy(nvl); } static void pfctl_nv_add_pool(nvlist_t *nvparent, const char *name, const struct pfctl_pool *pool) { uint64_t ports[2]; nvlist_t *nvl = nvlist_create(0); nvlist_add_binary(nvl, "key", &pool->key, sizeof(pool->key)); pfctl_nv_add_addr(nvl, "counter", &pool->counter); nvlist_add_number(nvl, "tblidx", pool->tblidx); ports[0] = pool->proxy_port[0]; ports[1] = pool->proxy_port[1]; nvlist_add_number_array(nvl, "proxy_port", ports, 2); nvlist_add_number(nvl, "opts", pool->opts); pfctl_nv_add_mape(nvl, "mape", &pool->mape); nvlist_add_nvlist(nvparent, name, nvl); nvlist_destroy(nvl); } static void pf_nvmape_to_mape(const nvlist_t *nvl, struct pf_mape_portset *mape) { mape->offset = nvlist_get_number(nvl, "offset"); mape->psidlen = nvlist_get_number(nvl, "psidlen"); mape->psid = nvlist_get_number(nvl, "psid"); } static void pf_nvpool_to_pool(const nvlist_t *nvl, struct pfctl_pool *pool) { size_t len; const void *data; data = nvlist_get_binary(nvl, "key", &len); assert(len == sizeof(pool->key)); memcpy(&pool->key, data, len); pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "counter"), &pool->counter); pool->tblidx = nvlist_get_number(nvl, "tblidx"); pf_nvuint_16_array(nvl, "proxy_port", 2, pool->proxy_port, NULL); pool->opts = nvlist_get_number(nvl, "opts"); if (nvlist_exists_nvlist(nvl, "mape")) pf_nvmape_to_mape(nvlist_get_nvlist(nvl, "mape"), &pool->mape); } static void pfctl_nv_add_uid(nvlist_t *nvparent, const char *name, const struct pf_rule_uid *uid) { uint64_t uids[2]; nvlist_t *nvl = nvlist_create(0); uids[0] = uid->uid[0]; uids[1] = uid->uid[1]; nvlist_add_number_array(nvl, "uid", uids, 2); nvlist_add_number(nvl, "op", uid->op); nvlist_add_nvlist(nvparent, name, nvl); nvlist_destroy(nvl); } static void pf_nvrule_uid_to_rule_uid(const nvlist_t *nvl, struct pf_rule_uid *uid) { pf_nvuint_32_array(nvl, "uid", 2, uid->uid, NULL); uid->op = nvlist_get_number(nvl, "op"); } static void pfctl_nv_add_divert(nvlist_t *nvparent, const char *name, const struct pfctl_rule *r) { nvlist_t *nvl = nvlist_create(0); pfctl_nv_add_addr(nvl, "addr", &r->divert.addr); nvlist_add_number(nvl, "port", r->divert.port); nvlist_add_nvlist(nvparent, name, nvl); nvlist_destroy(nvl); } static void pf_nvdivert_to_divert(const nvlist_t *nvl, struct pfctl_rule *rule) { pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &rule->divert.addr); rule->divert.port = nvlist_get_number(nvl, "port"); } static void pf_nvrule_to_rule(const nvlist_t *nvl, struct pfctl_rule *rule) { const uint64_t *skip; const char *const *labels; size_t skipcount, labelcount; rule->nr = nvlist_get_number(nvl, "nr"); pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "src"), &rule->src); pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "dst"), &rule->dst); skip = nvlist_get_number_array(nvl, "skip", &skipcount); assert(skip); assert(skipcount == PF_SKIP_COUNT); for (int i = 0; i < PF_SKIP_COUNT; i++) rule->skip[i].nr = skip[i]; labels = nvlist_get_string_array(nvl, "labels", &labelcount); assert(labelcount <= PF_RULE_MAX_LABEL_COUNT); for (size_t i = 0; i < labelcount; i++) strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE); rule->ridentifier = nvlist_get_number(nvl, "ridentifier"); strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ); strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE); strlcpy(rule->pqname, nvlist_get_string(nvl, "pqname"), PF_QNAME_SIZE); strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"), PF_TAG_NAME_SIZE); strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"), PF_TAG_NAME_SIZE); strlcpy(rule->overload_tblname, nvlist_get_string(nvl, "overload_tblname"), PF_TABLE_NAME_SIZE); pf_nvpool_to_pool(nvlist_get_nvlist(nvl, "rpool"), &rule->rpool); rule->evaluations = nvlist_get_number(nvl, "evaluations"); pf_nvuint_64_array(nvl, "packets", 2, rule->packets, NULL); pf_nvuint_64_array(nvl, "bytes", 2, rule->bytes, NULL); rule->os_fingerprint = nvlist_get_number(nvl, "os_fingerprint"); rule->rtableid = nvlist_get_number(nvl, "rtableid"); pf_nvuint_32_array(nvl, "timeout", PFTM_MAX, rule->timeout, NULL); rule->max_states = nvlist_get_number(nvl, "max_states"); rule->max_src_nodes = nvlist_get_number(nvl, "max_src_nodes"); rule->max_src_states = nvlist_get_number(nvl, "max_src_states"); rule->max_src_conn = nvlist_get_number(nvl, "max_src_conn"); rule->max_src_conn_rate.limit = nvlist_get_number(nvl, "max_src_conn_rate.limit"); rule->max_src_conn_rate.seconds = nvlist_get_number(nvl, "max_src_conn_rate.seconds"); rule->qid = nvlist_get_number(nvl, "qid"); rule->pqid = nvlist_get_number(nvl, "pqid"); rule->dnpipe = nvlist_get_number(nvl, "dnpipe"); rule->dnrpipe = nvlist_get_number(nvl, "dnrpipe"); rule->free_flags = nvlist_get_number(nvl, "dnflags"); rule->prob = nvlist_get_number(nvl, "prob"); rule->cuid = nvlist_get_number(nvl, "cuid"); rule->cpid = nvlist_get_number(nvl, "cpid"); rule->return_icmp = nvlist_get_number(nvl, "return_icmp"); rule->return_icmp6 = nvlist_get_number(nvl, "return_icmp6"); rule->max_mss = nvlist_get_number(nvl, "max_mss"); rule->scrub_flags = nvlist_get_number(nvl, "scrub_flags"); pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "uid"), &rule->uid); pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "gid"), (struct pf_rule_uid *)&rule->gid); rule->rule_flag = nvlist_get_number(nvl, "rule_flag"); rule->action = nvlist_get_number(nvl, "action"); rule->direction = nvlist_get_number(nvl, "direction"); rule->log = nvlist_get_number(nvl, "log"); rule->logif = nvlist_get_number(nvl, "logif"); rule->quick = nvlist_get_number(nvl, "quick"); rule->ifnot = nvlist_get_number(nvl, "ifnot"); rule->match_tag_not = nvlist_get_number(nvl, "match_tag_not"); rule->natpass = nvlist_get_number(nvl, "natpass"); rule->keep_state = nvlist_get_number(nvl, "keep_state"); rule->af = nvlist_get_number(nvl, "af"); rule->proto = nvlist_get_number(nvl, "proto"); rule->type = nvlist_get_number(nvl, "type"); rule->code = nvlist_get_number(nvl, "code"); rule->flags = nvlist_get_number(nvl, "flags"); rule->flagset = nvlist_get_number(nvl, "flagset"); rule->min_ttl = nvlist_get_number(nvl, "min_ttl"); rule->allow_opts = nvlist_get_number(nvl, "allow_opts"); rule->rt = nvlist_get_number(nvl, "rt"); rule->return_ttl = nvlist_get_number(nvl, "return_ttl"); rule->tos = nvlist_get_number(nvl, "tos"); rule->set_tos = nvlist_get_number(nvl, "set_tos"); rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative"); rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard"); rule->flush = nvlist_get_number(nvl, "flush"); rule->prio = nvlist_get_number(nvl, "prio"); pf_nvuint_8_array(nvl, "set_prio", 2, rule->set_prio, NULL); pf_nvdivert_to_divert(nvlist_get_nvlist(nvl, "divert"), rule); rule->states_cur = nvlist_get_number(nvl, "states_cur"); rule->states_tot = nvlist_get_number(nvl, "states_tot"); rule->src_nodes = nvlist_get_number(nvl, "src_nodes"); } static void pfctl_nveth_addr_to_eth_addr(const nvlist_t *nvl, struct pfctl_eth_addr *addr) { static const u_int8_t EMPTY_MAC[ETHER_ADDR_LEN] = { 0 }; size_t len; const void *data; data = nvlist_get_binary(nvl, "addr", &len); assert(len == sizeof(addr->addr)); memcpy(addr->addr, data, sizeof(addr->addr)); data = nvlist_get_binary(nvl, "mask", &len); assert(len == sizeof(addr->mask)); memcpy(addr->mask, data, sizeof(addr->mask)); addr->neg = nvlist_get_bool(nvl, "neg"); /* To make checks for 'is this address set?' easier. */ addr->isset = memcmp(addr->addr, EMPTY_MAC, ETHER_ADDR_LEN) != 0; } static nvlist_t * pfctl_eth_addr_to_nveth_addr(const struct pfctl_eth_addr *addr) { nvlist_t *nvl; nvl = nvlist_create(0); if (nvl == NULL) return (NULL); nvlist_add_bool(nvl, "neg", addr->neg); nvlist_add_binary(nvl, "addr", &addr->addr, ETHER_ADDR_LEN); nvlist_add_binary(nvl, "mask", &addr->mask, ETHER_ADDR_LEN); return (nvl); } static void pfctl_nveth_rule_to_eth_rule(const nvlist_t *nvl, struct pfctl_eth_rule *rule) { rule->nr = nvlist_get_number(nvl, "nr"); rule->quick = nvlist_get_bool(nvl, "quick"); strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ); rule->ifnot = nvlist_get_bool(nvl, "ifnot"); rule->direction = nvlist_get_number(nvl, "direction"); rule->proto = nvlist_get_number(nvl, "proto"); pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "src"), &rule->src); pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "dst"), &rule->dst); pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipsrc"), &rule->ipsrc); pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipdst"), &rule->ipdst); rule->evaluations = nvlist_get_number(nvl, "evaluations"); rule->packets[0] = nvlist_get_number(nvl, "packets-in"); rule->packets[1] = nvlist_get_number(nvl, "packets-out"); rule->bytes[0] = nvlist_get_number(nvl, "bytes-in"); rule->bytes[1] = nvlist_get_number(nvl, "bytes-out"); strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE); strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"), PF_TAG_NAME_SIZE); rule->dnpipe = nvlist_get_number(nvl, "dnpipe"); rule->dnflags = nvlist_get_number(nvl, "dnflags"); rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative"); rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard"); rule->action = nvlist_get_number(nvl, "action"); } int pfctl_get_eth_rulesets_info(int dev, struct pfctl_eth_rulesets_info *ri, const char *path) { uint8_t buf[1024]; struct pfioc_nv nv; nvlist_t *nvl; void *packed; size_t len; bzero(ri, sizeof(*ri)); nvl = nvlist_create(0); nvlist_add_string(nvl, "path", path); packed = nvlist_pack(nvl, &len); memcpy(buf, packed, len); free(packed); nvlist_destroy(nvl); nv.data = buf; nv.len = len; nv.size = sizeof(buf); if (ioctl(dev, DIOCGETETHRULESETS, &nv) != 0) return (errno); nvl = nvlist_unpack(buf, nv.len, 0); if (nvl == NULL) return (EIO); ri->nr = nvlist_get_number(nvl, "nr"); nvlist_destroy(nvl); return (0); } int pfctl_get_eth_ruleset(int dev, const char *path, int nr, struct pfctl_eth_ruleset_info *ri) { uint8_t buf[1024]; struct pfioc_nv nv; nvlist_t *nvl; void *packed; size_t len; bzero(ri, sizeof(*ri)); nvl = nvlist_create(0); nvlist_add_string(nvl, "path", path); nvlist_add_number(nvl, "nr", nr); packed = nvlist_pack(nvl, &len); memcpy(buf, packed, len); free(packed); nvlist_destroy(nvl); nv.data = buf; nv.len = len; nv.size = sizeof(buf); if (ioctl(dev, DIOCGETETHRULESET, &nv) != 0) return (errno); nvl = nvlist_unpack(buf, nv.len, 0); if (nvl == NULL) return (EIO); ri->nr = nvlist_get_number(nvl, "nr"); strlcpy(ri->path, nvlist_get_string(nvl, "path"), MAXPATHLEN); strlcpy(ri->name, nvlist_get_string(nvl, "name"), PF_ANCHOR_NAME_SIZE); return (0); } int pfctl_get_eth_rules_info(int dev, struct pfctl_eth_rules_info *rules, const char *path) { uint8_t buf[1024]; struct pfioc_nv nv; nvlist_t *nvl; void *packed; size_t len; bzero(rules, sizeof(*rules)); nvl = nvlist_create(0); nvlist_add_string(nvl, "anchor", path); packed = nvlist_pack(nvl, &len); memcpy(buf, packed, len); free(packed); nvlist_destroy(nvl); nv.data = buf; nv.len = len; nv.size = sizeof(buf); if (ioctl(dev, DIOCGETETHRULES, &nv) != 0) return (errno); nvl = nvlist_unpack(buf, nv.len, 0); if (nvl == NULL) return (EIO); rules->nr = nvlist_get_number(nvl, "nr"); rules->ticket = nvlist_get_number(nvl, "ticket"); nvlist_destroy(nvl); return (0); } int pfctl_get_eth_rule(int dev, uint32_t nr, uint32_t ticket, const char *path, struct pfctl_eth_rule *rule, bool clear, char *anchor_call) { uint8_t buf[2048]; struct pfioc_nv nv; nvlist_t *nvl; void *data; size_t len; nvl = nvlist_create(0); nvlist_add_string(nvl, "anchor", path); nvlist_add_number(nvl, "ticket", ticket); nvlist_add_number(nvl, "nr", nr); nvlist_add_bool(nvl, "clear", clear); data = nvlist_pack(nvl, &len); nv.data = buf; memcpy(buf, data, len); free(data); nv.len = len; nv.size = sizeof(buf); if (ioctl(dev, DIOCGETETHRULE, &nv)) { nvlist_destroy(nvl); return (errno); } nvlist_destroy(nvl); nvl = nvlist_unpack(buf, nv.len, 0); if (nvl == NULL) { return (EIO); } pfctl_nveth_rule_to_eth_rule(nvl, rule); if (anchor_call) strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"), MAXPATHLEN); nvlist_destroy(nvl); return (0); } int pfctl_add_eth_rule(int dev, const struct pfctl_eth_rule *r, const char *anchor, const char *anchor_call, uint32_t ticket) { struct pfioc_nv nv; nvlist_t *nvl, *addr; void *packed; int error = 0; size_t size; nvl = nvlist_create(0); nvlist_add_number(nvl, "ticket", ticket); nvlist_add_string(nvl, "anchor", anchor); nvlist_add_string(nvl, "anchor_call", anchor_call); nvlist_add_number(nvl, "nr", r->nr); nvlist_add_bool(nvl, "quick", r->quick); nvlist_add_string(nvl, "ifname", r->ifname); nvlist_add_bool(nvl, "ifnot", r->ifnot); nvlist_add_number(nvl, "direction", r->direction); nvlist_add_number(nvl, "proto", r->proto); addr = pfctl_eth_addr_to_nveth_addr(&r->src); if (addr == NULL) { nvlist_destroy(nvl); return (ENOMEM); } nvlist_add_nvlist(nvl, "src", addr); nvlist_destroy(addr); addr = pfctl_eth_addr_to_nveth_addr(&r->dst); if (addr == NULL) { nvlist_destroy(nvl); return (ENOMEM); } nvlist_add_nvlist(nvl, "dst", addr); nvlist_destroy(addr); pfctl_nv_add_rule_addr(nvl, "ipsrc", &r->ipsrc); pfctl_nv_add_rule_addr(nvl, "ipdst", &r->ipdst); nvlist_add_string(nvl, "qname", r->qname); nvlist_add_string(nvl, "tagname", r->tagname); nvlist_add_number(nvl, "dnpipe", r->dnpipe); nvlist_add_number(nvl, "dnflags", r->dnflags); nvlist_add_number(nvl, "action", r->action); packed = nvlist_pack(nvl, &size); if (packed == NULL) { nvlist_destroy(nvl); return (ENOMEM); } nv.len = size; nv.size = size; nv.data = packed; if (ioctl(dev, DIOCADDETHRULE, &nv) != 0) error = errno; free(packed); nvlist_destroy(nvl); return (error); } int pfctl_add_rule(int dev, const struct pfctl_rule *r, const char *anchor, const char *anchor_call, uint32_t ticket, uint32_t pool_ticket) { struct pfioc_nv nv; uint64_t timeouts[PFTM_MAX]; uint64_t set_prio[2]; nvlist_t *nvl, *nvlr; size_t labelcount; int ret; nvl = nvlist_create(0); nvlr = nvlist_create(0); nvlist_add_number(nvl, "ticket", ticket); nvlist_add_number(nvl, "pool_ticket", pool_ticket); nvlist_add_string(nvl, "anchor", anchor); nvlist_add_string(nvl, "anchor_call", anchor_call); nvlist_add_number(nvlr, "nr", r->nr); pfctl_nv_add_rule_addr(nvlr, "src", &r->src); pfctl_nv_add_rule_addr(nvlr, "dst", &r->dst); labelcount = 0; while (r->label[labelcount][0] != 0 && labelcount < PF_RULE_MAX_LABEL_COUNT) { nvlist_append_string_array(nvlr, "labels", r->label[labelcount]); labelcount++; } nvlist_add_number(nvlr, "ridentifier", r->ridentifier); nvlist_add_string(nvlr, "ifname", r->ifname); nvlist_add_string(nvlr, "qname", r->qname); nvlist_add_string(nvlr, "pqname", r->pqname); nvlist_add_string(nvlr, "tagname", r->tagname); nvlist_add_string(nvlr, "match_tagname", r->match_tagname); nvlist_add_string(nvlr, "overload_tblname", r->overload_tblname); pfctl_nv_add_pool(nvlr, "rpool", &r->rpool); nvlist_add_number(nvlr, "os_fingerprint", r->os_fingerprint); nvlist_add_number(nvlr, "rtableid", r->rtableid); for (int i = 0; i < PFTM_MAX; i++) timeouts[i] = r->timeout[i]; nvlist_add_number_array(nvlr, "timeout", timeouts, PFTM_MAX); nvlist_add_number(nvlr, "max_states", r->max_states); nvlist_add_number(nvlr, "max_src_nodes", r->max_src_nodes); nvlist_add_number(nvlr, "max_src_states", r->max_src_states); nvlist_add_number(nvlr, "max_src_conn", r->max_src_conn); nvlist_add_number(nvlr, "max_src_conn_rate.limit", r->max_src_conn_rate.limit); nvlist_add_number(nvlr, "max_src_conn_rate.seconds", r->max_src_conn_rate.seconds); nvlist_add_number(nvlr, "dnpipe", r->dnpipe); nvlist_add_number(nvlr, "dnrpipe", r->dnrpipe); nvlist_add_number(nvlr, "dnflags", r->free_flags); nvlist_add_number(nvlr, "prob", r->prob); nvlist_add_number(nvlr, "cuid", r->cuid); nvlist_add_number(nvlr, "cpid", r->cpid); nvlist_add_number(nvlr, "return_icmp", r->return_icmp); nvlist_add_number(nvlr, "return_icmp6", r->return_icmp6); nvlist_add_number(nvlr, "max_mss", r->max_mss); nvlist_add_number(nvlr, "scrub_flags", r->scrub_flags); pfctl_nv_add_uid(nvlr, "uid", &r->uid); pfctl_nv_add_uid(nvlr, "gid", (const struct pf_rule_uid *)&r->gid); nvlist_add_number(nvlr, "rule_flag", r->rule_flag); nvlist_add_number(nvlr, "action", r->action); nvlist_add_number(nvlr, "direction", r->direction); nvlist_add_number(nvlr, "log", r->log); nvlist_add_number(nvlr, "logif", r->logif); nvlist_add_number(nvlr, "quick", r->quick); nvlist_add_number(nvlr, "ifnot", r->ifnot); nvlist_add_number(nvlr, "match_tag_not", r->match_tag_not); nvlist_add_number(nvlr, "natpass", r->natpass); nvlist_add_number(nvlr, "keep_state", r->keep_state); nvlist_add_number(nvlr, "af", r->af); nvlist_add_number(nvlr, "proto", r->proto); nvlist_add_number(nvlr, "type", r->type); nvlist_add_number(nvlr, "code", r->code); nvlist_add_number(nvlr, "flags", r->flags); nvlist_add_number(nvlr, "flagset", r->flagset); nvlist_add_number(nvlr, "min_ttl", r->min_ttl); nvlist_add_number(nvlr, "allow_opts", r->allow_opts); nvlist_add_number(nvlr, "rt", r->rt); nvlist_add_number(nvlr, "return_ttl", r->return_ttl); nvlist_add_number(nvlr, "tos", r->tos); nvlist_add_number(nvlr, "set_tos", r->set_tos); nvlist_add_number(nvlr, "anchor_relative", r->anchor_relative); nvlist_add_number(nvlr, "anchor_wildcard", r->anchor_wildcard); nvlist_add_number(nvlr, "flush", r->flush); nvlist_add_number(nvlr, "prio", r->prio); set_prio[0] = r->set_prio[0]; set_prio[1] = r->set_prio[1]; nvlist_add_number_array(nvlr, "set_prio", set_prio, 2); pfctl_nv_add_divert(nvlr, "divert", r); nvlist_add_nvlist(nvl, "rule", nvlr); nvlist_destroy(nvlr); /* Now do the call. */ nv.data = nvlist_pack(nvl, &nv.len); nv.size = nv.len; ret = ioctl(dev, DIOCADDRULENV, &nv); + if (ret == -1) + ret = errno; free(nv.data); nvlist_destroy(nvl); return (ret); } int pfctl_get_rules_info(int dev, struct pfctl_rules_info *rules, uint32_t ruleset, const char *path) { struct pfioc_rule pr; int ret; bzero(&pr, sizeof(pr)); if (strlcpy(pr.anchor, path, sizeof(pr.anchor)) >= sizeof(pr.anchor)) return (E2BIG); pr.rule.action = ruleset; ret = ioctl(dev, DIOCGETRULES, &pr); if (ret != 0) return (ret); rules->nr = pr.nr; rules->ticket = pr.ticket; return (0); } int pfctl_get_rule(int dev, uint32_t nr, uint32_t ticket, const char *anchor, uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call) { return (pfctl_get_clear_rule(dev, nr, ticket, anchor, ruleset, rule, anchor_call, false)); } int pfctl_get_clear_rule(int dev, uint32_t nr, uint32_t ticket, const char *anchor, uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call, bool clear) { struct pfioc_nv nv; nvlist_t *nvl; void *nvlpacked; int ret; nvl = nvlist_create(0); if (nvl == 0) return (ENOMEM); nvlist_add_number(nvl, "nr", nr); nvlist_add_number(nvl, "ticket", ticket); nvlist_add_string(nvl, "anchor", anchor); nvlist_add_number(nvl, "ruleset", ruleset); if (clear) nvlist_add_bool(nvl, "clear_counter", true); nvlpacked = nvlist_pack(nvl, &nv.len); if (nvlpacked == NULL) { nvlist_destroy(nvl); return (ENOMEM); } nv.data = malloc(8182); nv.size = 8192; assert(nv.len <= nv.size); memcpy(nv.data, nvlpacked, nv.len); nvlist_destroy(nvl); nvl = NULL; free(nvlpacked); ret = ioctl(dev, DIOCGETRULENV, &nv); if (ret != 0) { free(nv.data); return (ret); } nvl = nvlist_unpack(nv.data, nv.len, 0); if (nvl == NULL) { free(nv.data); return (EIO); } pf_nvrule_to_rule(nvlist_get_nvlist(nvl, "rule"), rule); if (anchor_call) strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"), MAXPATHLEN); free(nv.data); nvlist_destroy(nvl); return (0); } int pfctl_set_keepcounters(int dev, bool keep) { struct pfioc_nv nv; nvlist_t *nvl; int ret; nvl = nvlist_create(0); nvlist_add_bool(nvl, "keep_counters", keep); nv.data = nvlist_pack(nvl, &nv.len); nv.size = nv.len; nvlist_destroy(nvl); ret = ioctl(dev, DIOCKEEPCOUNTERS, &nv); free(nv.data); return (ret); } static void pfctl_nv_add_state_cmp(nvlist_t *nvl, const char *name, const struct pfctl_state_cmp *cmp) { nvlist_t *nv; nv = nvlist_create(0); nvlist_add_number(nv, "id", cmp->id); nvlist_add_number(nv, "creatorid", htonl(cmp->creatorid)); nvlist_add_number(nv, "direction", cmp->direction); nvlist_add_nvlist(nvl, name, nv); nvlist_destroy(nv); } static void pf_state_key_export_to_state_key(struct pfctl_state_key *ps, const struct pf_state_key_export *s) { bcopy(s->addr, ps->addr, sizeof(ps->addr[0]) * 2); ps->port[0] = s->port[0]; ps->port[1] = s->port[1]; } static void pf_state_peer_export_to_state_peer(struct pfctl_state_peer *ps, const struct pf_state_peer_export *s) { /* Ignore scrub. */ ps->seqlo = s->seqlo; ps->seqhi = s->seqhi; ps->seqdiff = s->seqdiff; /* Ignore max_win & mss */ ps->state = s->state; ps->wscale = s->wscale; } static void pf_state_export_to_state(struct pfctl_state *ps, const struct pf_state_export *s) { assert(s->version >= PF_STATE_VERSION); ps->id = s->id; strlcpy(ps->ifname, s->ifname, sizeof(ps->ifname)); strlcpy(ps->orig_ifname, s->orig_ifname, sizeof(ps->orig_ifname)); pf_state_key_export_to_state_key(&ps->key[0], &s->key[0]); pf_state_key_export_to_state_key(&ps->key[1], &s->key[1]); pf_state_peer_export_to_state_peer(&ps->src, &s->src); pf_state_peer_export_to_state_peer(&ps->dst, &s->dst); bcopy(&s->rt_addr, &ps->rt_addr, sizeof(ps->rt_addr)); ps->rule = ntohl(s->rule); ps->anchor = ntohl(s->anchor); ps->nat_rule = ntohl(s->nat_rule); ps->creation = ntohl(s->creation); ps->expire = ntohl(s->expire); ps->packets[0] = s->packets[0]; ps->packets[1] = s->packets[1]; ps->bytes[0] = s->bytes[0]; ps->bytes[1] = s->bytes[1]; ps->creatorid = ntohl(s->creatorid); ps->key[0].proto = s->proto; ps->key[1].proto = s->proto; ps->key[0].af = s->af; ps->key[1].af = s->af; ps->direction = s->direction; ps->state_flags = s->state_flags; ps->sync_flags = s->sync_flags; } int pfctl_get_states(int dev, struct pfctl_states *states) { struct pfioc_states_v2 ps; struct pf_state_export *p; char *inbuf = NULL, *newinbuf = NULL; unsigned int len = 0; int i, error; bzero(&ps, sizeof(ps)); ps.ps_req_version = PF_STATE_VERSION; bzero(states, sizeof(*states)); TAILQ_INIT(&states->states); for (;;) { ps.ps_len = len; if (len) { newinbuf = realloc(inbuf, len); if (newinbuf == NULL) return (ENOMEM); ps.ps_buf = inbuf = newinbuf; } if ((error = ioctl(dev, DIOCGETSTATESV2, &ps)) < 0) { free(inbuf); return (error); } if (ps.ps_len + sizeof(struct pfioc_states_v2) < len) break; if (len == 0 && ps.ps_len == 0) goto out; if (len == 0 && ps.ps_len != 0) len = ps.ps_len; if (ps.ps_len == 0) goto out; /* no states */ len *= 2; } p = ps.ps_states; for (i = 0; i < ps.ps_len; i += sizeof(*p), p++) { struct pfctl_state *s = malloc(sizeof(*s)); if (s == NULL) { pfctl_free_states(states); error = ENOMEM; goto out; } pf_state_export_to_state(s, p); TAILQ_INSERT_TAIL(&states->states, s, entry); } out: free(inbuf); return (error); } void pfctl_free_states(struct pfctl_states *states) { struct pfctl_state *s, *tmp; TAILQ_FOREACH_SAFE(s, &states->states, entry, tmp) { free(s); } bzero(states, sizeof(*states)); } static int _pfctl_clear_states(int dev, const struct pfctl_kill *kill, unsigned int *killed, uint64_t ioctlval) { struct pfioc_nv nv; nvlist_t *nvl; int ret; nvl = nvlist_create(0); pfctl_nv_add_state_cmp(nvl, "cmp", &kill->cmp); nvlist_add_number(nvl, "af", kill->af); nvlist_add_number(nvl, "proto", kill->proto); pfctl_nv_add_rule_addr(nvl, "src", &kill->src); pfctl_nv_add_rule_addr(nvl, "dst", &kill->dst); pfctl_nv_add_rule_addr(nvl, "rt_addr", &kill->rt_addr); nvlist_add_string(nvl, "ifname", kill->ifname); nvlist_add_string(nvl, "label", kill->label); nvlist_add_bool(nvl, "kill_match", kill->kill_match); nv.data = nvlist_pack(nvl, &nv.len); nv.size = nv.len; nvlist_destroy(nvl); nvl = NULL; ret = ioctl(dev, ioctlval, &nv); if (ret != 0) { free(nv.data); return (ret); } nvl = nvlist_unpack(nv.data, nv.len, 0); if (nvl == NULL) { free(nv.data); return (EIO); } if (killed) *killed = nvlist_get_number(nvl, "killed"); nvlist_destroy(nvl); free(nv.data); return (ret); } int pfctl_clear_states(int dev, const struct pfctl_kill *kill, unsigned int *killed) { return (_pfctl_clear_states(dev, kill, killed, DIOCCLRSTATESNV)); } int pfctl_kill_states(int dev, const struct pfctl_kill *kill, unsigned int *killed) { return (_pfctl_clear_states(dev, kill, killed, DIOCKILLSTATESNV)); } int pfctl_clear_rules(int dev, const char *anchorname) { struct pfioc_trans trans; struct pfioc_trans_e transe[2]; int ret; bzero(&trans, sizeof(trans)); bzero(&transe, sizeof(transe)); transe[0].rs_num = PF_RULESET_SCRUB; if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor)) >= sizeof(transe[0].anchor)) return (E2BIG); transe[1].rs_num = PF_RULESET_FILTER; if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor)) >= sizeof(transe[1].anchor)) return (E2BIG); trans.size = 2; trans.esize = sizeof(transe[0]); trans.array = transe; ret = ioctl(dev, DIOCXBEGIN, &trans); if (ret != 0) return (ret); return ioctl(dev, DIOCXCOMMIT, &trans); } int pfctl_clear_nat(int dev, const char *anchorname) { struct pfioc_trans trans; struct pfioc_trans_e transe[3]; int ret; bzero(&trans, sizeof(trans)); bzero(&transe, sizeof(transe)); transe[0].rs_num = PF_RULESET_NAT; if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor)) >= sizeof(transe[0].anchor)) return (E2BIG); transe[1].rs_num = PF_RULESET_BINAT; if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor)) >= sizeof(transe[0].anchor)) return (E2BIG); transe[2].rs_num = PF_RULESET_RDR; if (strlcpy(transe[2].anchor, anchorname, sizeof(transe[2].anchor)) >= sizeof(transe[2].anchor)) return (E2BIG); trans.size = 3; trans.esize = sizeof(transe[0]); trans.array = transe; ret = ioctl(dev, DIOCXBEGIN, &trans); if (ret != 0) return (ret); return ioctl(dev, DIOCXCOMMIT, &trans); } int pfctl_clear_eth_rules(int dev, const char *anchorname) { struct pfioc_trans trans; struct pfioc_trans_e transe; int ret; bzero(&trans, sizeof(trans)); bzero(&transe, sizeof(transe)); transe.rs_num = PF_RULESET_ETH; if (strlcpy(transe.anchor, anchorname, sizeof(transe.anchor)) >= sizeof(transe.anchor)) return (E2BIG); trans.size = 1; trans.esize = sizeof(transe); trans.array = &transe; ret = ioctl(dev, DIOCXBEGIN, &trans); if (ret != 0) return (ret); return ioctl(dev, DIOCXCOMMIT, &trans); } static int pfctl_get_limit(int dev, const int index, uint *limit) { struct pfioc_limit pl; bzero(&pl, sizeof(pl)); pl.index = index; if (ioctl(dev, DIOCGETLIMIT, &pl) == -1) return (errno); *limit = pl.limit; return (0); } int pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s) { struct pfioc_nv nv; nvlist_t *nvl; int ret; uint state_limit; ret = pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); if (ret != 0) return (ret); nvl = nvlist_create(0); nvlist_add_bool(nvl, "enabled", s->mode != PFCTL_SYNCOOKIES_NEVER); nvlist_add_bool(nvl, "adaptive", s->mode == PFCTL_SYNCOOKIES_ADAPTIVE); nvlist_add_number(nvl, "highwater", state_limit * s->highwater / 100); nvlist_add_number(nvl, "lowwater", state_limit * s->lowwater / 100); nv.data = nvlist_pack(nvl, &nv.len); nv.size = nv.len; nvlist_destroy(nvl); nvl = NULL; ret = ioctl(dev, DIOCSETSYNCOOKIES, &nv); free(nv.data); return (ret); } int pfctl_get_syncookies(int dev, struct pfctl_syncookies *s) { struct pfioc_nv nv; nvlist_t *nvl; int ret; uint state_limit; bool enabled, adaptive; ret = pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); if (ret != 0) return (ret); bzero(s, sizeof(*s)); nv.data = malloc(256); nv.len = nv.size = 256; if (ioctl(dev, DIOCGETSYNCOOKIES, &nv)) { free(nv.data); return (errno); } nvl = nvlist_unpack(nv.data, nv.len, 0); free(nv.data); if (nvl == NULL) { return (EIO); } enabled = nvlist_get_bool(nvl, "enabled"); adaptive = nvlist_get_bool(nvl, "adaptive"); if (enabled) { if (adaptive) s->mode = PFCTL_SYNCOOKIES_ADAPTIVE; else s->mode = PFCTL_SYNCOOKIES_ALWAYS; } else { s->mode = PFCTL_SYNCOOKIES_NEVER; } s->highwater = nvlist_get_number(nvl, "highwater") * 100 / state_limit; s->lowwater = nvlist_get_number(nvl, "lowwater") * 100 / state_limit; nvlist_destroy(nvl); return (0); } diff --git a/sbin/pfctl/pfctl.c b/sbin/pfctl/pfctl.c index 67358a325f77..13e8e825c1ab 100644 --- a/sbin/pfctl/pfctl.c +++ b/sbin/pfctl/pfctl.c @@ -1,3078 +1,3093 @@ /* $OpenBSD: pfctl.c,v 1.278 2008/08/31 20:18:17 jmc Exp $ */ /*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2001 Daniel Hartmeier * Copyright (c) 2002,2003 Henning Brauer * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * */ #include __FBSDID("$FreeBSD$"); #define PFIOC_USE_LATEST #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "pfctl_parser.h" #include "pfctl.h" void usage(void); int pfctl_enable(int, int); int pfctl_disable(int, int); int pfctl_clear_stats(int, int); int pfctl_get_skip_ifaces(void); int pfctl_check_skip_ifaces(char *); int pfctl_adjust_skip_ifaces(struct pfctl *); int pfctl_clear_interface_flags(int, int); int pfctl_flush_eth_rules(int, int, char *); int pfctl_flush_rules(int, int, char *); int pfctl_flush_nat(int, int, char *); int pfctl_clear_altq(int, int); int pfctl_clear_src_nodes(int, int); int pfctl_clear_iface_states(int, const char *, int); void pfctl_addrprefix(char *, struct pf_addr *); int pfctl_kill_src_nodes(int, const char *, int); int pfctl_net_kill_states(int, const char *, int); int pfctl_gateway_kill_states(int, const char *, int); int pfctl_label_kill_states(int, const char *, int); int pfctl_id_kill_states(int, const char *, int); void pfctl_init_options(struct pfctl *); int pfctl_load_options(struct pfctl *); int pfctl_load_limit(struct pfctl *, unsigned int, unsigned int); int pfctl_load_timeout(struct pfctl *, unsigned int, unsigned int); int pfctl_load_debug(struct pfctl *, unsigned int); int pfctl_load_logif(struct pfctl *, char *); int pfctl_load_hostid(struct pfctl *, u_int32_t); int pfctl_load_syncookies(struct pfctl *, u_int8_t); int pfctl_get_pool(int, struct pfctl_pool *, u_int32_t, u_int32_t, int, char *); void pfctl_print_eth_rule_counters(struct pfctl_eth_rule *, int); void pfctl_print_rule_counters(struct pfctl_rule *, int); int pfctl_show_eth_rules(int, char *, int, enum pfctl_show, char *, int); int pfctl_show_rules(int, char *, int, enum pfctl_show, char *, int); int pfctl_show_nat(int, char *, int, char *, int); int pfctl_show_src_nodes(int, int); int pfctl_show_states(int, const char *, int); int pfctl_show_status(int, int); int pfctl_show_running(int); int pfctl_show_timeouts(int, int); int pfctl_show_limits(int, int); void pfctl_debug(int, u_int32_t, int); int pfctl_test_altqsupport(int, int); int pfctl_show_anchors(int, int, char *); int pfctl_show_eth_anchors(int, int, char *); int pfctl_ruleset_trans(struct pfctl *, char *, struct pfctl_anchor *, bool); int pfctl_eth_ruleset_trans(struct pfctl *, char *, struct pfctl_eth_anchor *); int pfctl_load_eth_ruleset(struct pfctl *, char *, struct pfctl_eth_ruleset *, int); int pfctl_load_eth_rule(struct pfctl *, char *, struct pfctl_eth_rule *, int); int pfctl_load_ruleset(struct pfctl *, char *, struct pfctl_ruleset *, int, int); int pfctl_load_rule(struct pfctl *, char *, struct pfctl_rule *, int); const char *pfctl_lookup_option(char *, const char * const *); static struct pfctl_anchor_global pf_anchors; struct pfctl_anchor pf_main_anchor; struct pfctl_eth_anchor pf_eth_main_anchor; static struct pfr_buffer skip_b; static const char *clearopt; static char *rulesopt; static const char *showopt; static const char *debugopt; static char *anchoropt; static const char *optiopt = NULL; static const char *pf_device = "/dev/pf"; static char *ifaceopt; static char *tableopt; static const char *tblcmdopt; static int src_node_killers; static char *src_node_kill[2]; static int state_killers; static char *state_kill[2]; int loadopt; int altqsupport; int dev = -1; static int first_title = 1; static int labels = 0; #define INDENT(d, o) do { \ if (o) { \ int i; \ for (i=0; i < d; i++) \ printf(" "); \ } \ } while (0); \ static const struct { const char *name; int index; } pf_limits[] = { { "states", PF_LIMIT_STATES }, { "src-nodes", PF_LIMIT_SRC_NODES }, { "frags", PF_LIMIT_FRAGS }, { "table-entries", PF_LIMIT_TABLE_ENTRIES }, { NULL, 0 } }; struct pf_hint { const char *name; int timeout; }; static const struct pf_hint pf_hint_normal[] = { { "tcp.first", 2 * 60 }, { "tcp.opening", 30 }, { "tcp.established", 24 * 60 * 60 }, { "tcp.closing", 15 * 60 }, { "tcp.finwait", 45 }, { "tcp.closed", 90 }, { "tcp.tsdiff", 30 }, { NULL, 0 } }; static const struct pf_hint pf_hint_satellite[] = { { "tcp.first", 3 * 60 }, { "tcp.opening", 30 + 5 }, { "tcp.established", 24 * 60 * 60 }, { "tcp.closing", 15 * 60 + 5 }, { "tcp.finwait", 45 + 5 }, { "tcp.closed", 90 + 5 }, { "tcp.tsdiff", 60 }, { NULL, 0 } }; static const struct pf_hint pf_hint_conservative[] = { { "tcp.first", 60 * 60 }, { "tcp.opening", 15 * 60 }, { "tcp.established", 5 * 24 * 60 * 60 }, { "tcp.closing", 60 * 60 }, { "tcp.finwait", 10 * 60 }, { "tcp.closed", 3 * 60 }, { "tcp.tsdiff", 60 }, { NULL, 0 } }; static const struct pf_hint pf_hint_aggressive[] = { { "tcp.first", 30 }, { "tcp.opening", 5 }, { "tcp.established", 5 * 60 * 60 }, { "tcp.closing", 60 }, { "tcp.finwait", 30 }, { "tcp.closed", 30 }, { "tcp.tsdiff", 10 }, { NULL, 0 } }; static const struct { const char *name; const struct pf_hint *hint; } pf_hints[] = { { "normal", pf_hint_normal }, { "satellite", pf_hint_satellite }, { "high-latency", pf_hint_satellite }, { "conservative", pf_hint_conservative }, { "aggressive", pf_hint_aggressive }, { NULL, NULL } }; static const char * const clearopt_list[] = { "nat", "queue", "rules", "Sources", "states", "info", "Tables", "osfp", "all", "ethernet", NULL }; static const char * const showopt_list[] = { "ether", "nat", "queue", "rules", "Anchors", "Sources", "states", "info", "Interfaces", "labels", "timeouts", "memory", "Tables", "osfp", "Running", "all", NULL }; static const char * const tblcmdopt_list[] = { "kill", "flush", "add", "delete", "load", "replace", "show", "test", "zero", "expire", NULL }; static const char * const debugopt_list[] = { "none", "urgent", "misc", "loud", NULL }; static const char * const optiopt_list[] = { "none", "basic", "profile", NULL }; void usage(void) { extern char *__progname; fprintf(stderr, "usage: %s [-AdeghMmNnOPqRrvz] [-a anchor] [-D macro=value] [-F modifier]\n" "\t[-f file] [-i interface] [-K host | network]\n" "\t[-k host | network | gateway | label | id] [-o level] [-p device]\n" "\t[-s modifier] [-t table -T command [address ...]] [-x level]\n", __progname); exit(1); } /* * Cache protocol number to name translations. * * Translation is performed a lot e.g., when dumping states and * getprotobynumber is incredibly expensive. * * Note from the getprotobynumber(3) manpage: * * These functions use a thread-specific data space; if the data is needed * for future use, it should be copied before any subsequent calls overwrite * it. Only the Internet protocols are currently understood. * * * Consequently we only cache the name and strdup it for safety. * * At the time of writing this comment the last entry in /etc/protocols is: * divert 258 DIVERT # Divert pseudo-protocol [non IANA] */ const char * pfctl_proto2name(int proto) { static const char *pfctl_proto_cache[259]; struct protoent *p; if (proto >= nitems(pfctl_proto_cache)) { p = getprotobynumber(proto); if (p == NULL) { return (NULL); } return (p->p_name); } if (pfctl_proto_cache[proto] == NULL) { p = getprotobynumber(proto); if (p == NULL) { return (NULL); } pfctl_proto_cache[proto] = strdup(p->p_name); } return (pfctl_proto_cache[proto]); } int pfctl_enable(int dev, int opts) { if (ioctl(dev, DIOCSTART)) { if (errno == EEXIST) errx(1, "pf already enabled"); else if (errno == ESRCH) errx(1, "pfil registeration failed"); else err(1, "DIOCSTART"); } if ((opts & PF_OPT_QUIET) == 0) fprintf(stderr, "pf enabled\n"); if (altqsupport && ioctl(dev, DIOCSTARTALTQ)) if (errno != EEXIST) err(1, "DIOCSTARTALTQ"); return (0); } int pfctl_disable(int dev, int opts) { if (ioctl(dev, DIOCSTOP)) { if (errno == ENOENT) errx(1, "pf not enabled"); else err(1, "DIOCSTOP"); } if ((opts & PF_OPT_QUIET) == 0) fprintf(stderr, "pf disabled\n"); if (altqsupport && ioctl(dev, DIOCSTOPALTQ)) if (errno != ENOENT) err(1, "DIOCSTOPALTQ"); return (0); } int pfctl_clear_stats(int dev, int opts) { if (ioctl(dev, DIOCCLRSTATUS)) err(1, "DIOCCLRSTATUS"); if ((opts & PF_OPT_QUIET) == 0) fprintf(stderr, "pf: statistics cleared\n"); return (0); } int pfctl_get_skip_ifaces(void) { bzero(&skip_b, sizeof(skip_b)); skip_b.pfrb_type = PFRB_IFACES; for (;;) { pfr_buf_grow(&skip_b, skip_b.pfrb_size); skip_b.pfrb_size = skip_b.pfrb_msize; if (pfi_get_ifaces(NULL, skip_b.pfrb_caddr, &skip_b.pfrb_size)) err(1, "pfi_get_ifaces"); if (skip_b.pfrb_size <= skip_b.pfrb_msize) break; } return (0); } int pfctl_check_skip_ifaces(char *ifname) { struct pfi_kif *p; struct node_host *h = NULL, *n = NULL; PFRB_FOREACH(p, &skip_b) { if (!strcmp(ifname, p->pfik_name) && (p->pfik_flags & PFI_IFLAG_SKIP)) p->pfik_flags &= ~PFI_IFLAG_SKIP; if (!strcmp(ifname, p->pfik_name) && p->pfik_group != NULL) { if ((h = ifa_grouplookup(p->pfik_name, 0)) == NULL) continue; for (n = h; n != NULL; n = n->next) { if (p->pfik_ifp == NULL) continue; if (strncmp(p->pfik_name, ifname, IFNAMSIZ)) continue; p->pfik_flags &= ~PFI_IFLAG_SKIP; } } } return (0); } int pfctl_adjust_skip_ifaces(struct pfctl *pf) { struct pfi_kif *p, *pp; struct node_host *h = NULL, *n = NULL; PFRB_FOREACH(p, &skip_b) { if (p->pfik_group == NULL || !(p->pfik_flags & PFI_IFLAG_SKIP)) continue; pfctl_set_interface_flags(pf, p->pfik_name, PFI_IFLAG_SKIP, 0); if ((h = ifa_grouplookup(p->pfik_name, 0)) == NULL) continue; for (n = h; n != NULL; n = n->next) PFRB_FOREACH(pp, &skip_b) { if (pp->pfik_ifp == NULL) continue; if (strncmp(pp->pfik_name, n->ifname, IFNAMSIZ)) continue; if (!(pp->pfik_flags & PFI_IFLAG_SKIP)) pfctl_set_interface_flags(pf, pp->pfik_name, PFI_IFLAG_SKIP, 1); if (pp->pfik_flags & PFI_IFLAG_SKIP) pp->pfik_flags &= ~PFI_IFLAG_SKIP; } } PFRB_FOREACH(p, &skip_b) { if (p->pfik_ifp == NULL || ! (p->pfik_flags & PFI_IFLAG_SKIP)) continue; pfctl_set_interface_flags(pf, p->pfik_name, PFI_IFLAG_SKIP, 0); } return (0); } int pfctl_clear_interface_flags(int dev, int opts) { struct pfioc_iface pi; if ((opts & PF_OPT_NOACTION) == 0) { bzero(&pi, sizeof(pi)); pi.pfiio_flags = PFI_IFLAG_SKIP; if (ioctl(dev, DIOCCLRIFFLAG, &pi)) err(1, "DIOCCLRIFFLAG"); if ((opts & PF_OPT_QUIET) == 0) fprintf(stderr, "pf: interface flags reset\n"); } return (0); } int pfctl_flush_eth_rules(int dev, int opts, char *anchorname) { int ret; ret = pfctl_clear_eth_rules(dev, anchorname); if (ret != 0) err(1, "pfctl_clear_eth_rules"); if ((opts & PF_OPT_QUIET) == 0) fprintf(stderr, "Ethernet rules cleared\n"); return (ret); } int pfctl_flush_rules(int dev, int opts, char *anchorname) { int ret; ret = pfctl_clear_rules(dev, anchorname); if (ret != 0) err(1, "pfctl_clear_rules"); if ((opts & PF_OPT_QUIET) == 0) fprintf(stderr, "rules cleared\n"); return (0); } int pfctl_flush_nat(int dev, int opts, char *anchorname) { int ret; ret = pfctl_clear_nat(dev, anchorname); if (ret != 0) err(1, "pfctl_clear_nat"); if ((opts & PF_OPT_QUIET) == 0) fprintf(stderr, "nat cleared\n"); return (0); } int pfctl_clear_altq(int dev, int opts) { struct pfr_buffer t; if (!altqsupport) return (-1); memset(&t, 0, sizeof(t)); t.pfrb_type = PFRB_TRANS; if (pfctl_add_trans(&t, PF_RULESET_ALTQ, "") || pfctl_trans(dev, &t, DIOCXBEGIN, 0) || pfctl_trans(dev, &t, DIOCXCOMMIT, 0)) err(1, "pfctl_clear_altq"); if ((opts & PF_OPT_QUIET) == 0) fprintf(stderr, "altq cleared\n"); return (0); } int pfctl_clear_src_nodes(int dev, int opts) { if (ioctl(dev, DIOCCLRSRCNODES)) err(1, "DIOCCLRSRCNODES"); if ((opts & PF_OPT_QUIET) == 0) fprintf(stderr, "source tracking entries cleared\n"); return (0); } int pfctl_clear_iface_states(int dev, const char *iface, int opts) { struct pfctl_kill kill; unsigned int killed; memset(&kill, 0, sizeof(kill)); if (iface != NULL && strlcpy(kill.ifname, iface, sizeof(kill.ifname)) >= sizeof(kill.ifname)) errx(1, "invalid interface: %s", iface); if (opts & PF_OPT_KILLMATCH) kill.kill_match = true; if (pfctl_clear_states(dev, &kill, &killed)) err(1, "DIOCCLRSTATES"); if ((opts & PF_OPT_QUIET) == 0) fprintf(stderr, "%d states cleared\n", killed); return (0); } void pfctl_addrprefix(char *addr, struct pf_addr *mask) { char *p; const char *errstr; int prefix, ret_ga, q, r; struct addrinfo hints, *res; if ((p = strchr(addr, '/')) == NULL) return; *p++ = '\0'; prefix = strtonum(p, 0, 128, &errstr); if (errstr) errx(1, "prefix is %s: %s", errstr, p); bzero(&hints, sizeof(hints)); /* prefix only with numeric addresses */ hints.ai_flags |= AI_NUMERICHOST; if ((ret_ga = getaddrinfo(addr, NULL, &hints, &res))) { errx(1, "getaddrinfo: %s", gai_strerror(ret_ga)); /* NOTREACHED */ } if (res->ai_family == AF_INET && prefix > 32) errx(1, "prefix too long for AF_INET"); else if (res->ai_family == AF_INET6 && prefix > 128) errx(1, "prefix too long for AF_INET6"); q = prefix >> 3; r = prefix & 7; switch (res->ai_family) { case AF_INET: bzero(&mask->v4, sizeof(mask->v4)); mask->v4.s_addr = htonl((u_int32_t) (0xffffffffffULL << (32 - prefix))); break; case AF_INET6: bzero(&mask->v6, sizeof(mask->v6)); if (q > 0) memset((void *)&mask->v6, 0xff, q); if (r > 0) *((u_char *)&mask->v6 + q) = (0xff00 >> r) & 0xff; break; } freeaddrinfo(res); } int pfctl_kill_src_nodes(int dev, const char *iface, int opts) { struct pfioc_src_node_kill psnk; struct addrinfo *res[2], *resp[2]; struct sockaddr last_src, last_dst; int killed, sources, dests; int ret_ga; killed = sources = dests = 0; memset(&psnk, 0, sizeof(psnk)); memset(&psnk.psnk_src.addr.v.a.mask, 0xff, sizeof(psnk.psnk_src.addr.v.a.mask)); memset(&last_src, 0xff, sizeof(last_src)); memset(&last_dst, 0xff, sizeof(last_dst)); pfctl_addrprefix(src_node_kill[0], &psnk.psnk_src.addr.v.a.mask); if ((ret_ga = getaddrinfo(src_node_kill[0], NULL, NULL, &res[0]))) { errx(1, "getaddrinfo: %s", gai_strerror(ret_ga)); /* NOTREACHED */ } for (resp[0] = res[0]; resp[0]; resp[0] = resp[0]->ai_next) { if (resp[0]->ai_addr == NULL) continue; /* We get lots of duplicates. Catch the easy ones */ if (memcmp(&last_src, resp[0]->ai_addr, sizeof(last_src)) == 0) continue; last_src = *(struct sockaddr *)resp[0]->ai_addr; psnk.psnk_af = resp[0]->ai_family; sources++; if (psnk.psnk_af == AF_INET) psnk.psnk_src.addr.v.a.addr.v4 = ((struct sockaddr_in *)resp[0]->ai_addr)->sin_addr; else if (psnk.psnk_af == AF_INET6) psnk.psnk_src.addr.v.a.addr.v6 = ((struct sockaddr_in6 *)resp[0]->ai_addr)-> sin6_addr; else errx(1, "Unknown address family %d", psnk.psnk_af); if (src_node_killers > 1) { dests = 0; memset(&psnk.psnk_dst.addr.v.a.mask, 0xff, sizeof(psnk.psnk_dst.addr.v.a.mask)); memset(&last_dst, 0xff, sizeof(last_dst)); pfctl_addrprefix(src_node_kill[1], &psnk.psnk_dst.addr.v.a.mask); if ((ret_ga = getaddrinfo(src_node_kill[1], NULL, NULL, &res[1]))) { errx(1, "getaddrinfo: %s", gai_strerror(ret_ga)); /* NOTREACHED */ } for (resp[1] = res[1]; resp[1]; resp[1] = resp[1]->ai_next) { if (resp[1]->ai_addr == NULL) continue; if (psnk.psnk_af != resp[1]->ai_family) continue; if (memcmp(&last_dst, resp[1]->ai_addr, sizeof(last_dst)) == 0) continue; last_dst = *(struct sockaddr *)resp[1]->ai_addr; dests++; if (psnk.psnk_af == AF_INET) psnk.psnk_dst.addr.v.a.addr.v4 = ((struct sockaddr_in *)resp[1]-> ai_addr)->sin_addr; else if (psnk.psnk_af == AF_INET6) psnk.psnk_dst.addr.v.a.addr.v6 = ((struct sockaddr_in6 *)resp[1]-> ai_addr)->sin6_addr; else errx(1, "Unknown address family %d", psnk.psnk_af); if (ioctl(dev, DIOCKILLSRCNODES, &psnk)) err(1, "DIOCKILLSRCNODES"); killed += psnk.psnk_killed; } freeaddrinfo(res[1]); } else { if (ioctl(dev, DIOCKILLSRCNODES, &psnk)) err(1, "DIOCKILLSRCNODES"); killed += psnk.psnk_killed; } } freeaddrinfo(res[0]); if ((opts & PF_OPT_QUIET) == 0) fprintf(stderr, "killed %d src nodes from %d sources and %d " "destinations\n", killed, sources, dests); return (0); } int pfctl_net_kill_states(int dev, const char *iface, int opts) { struct pfctl_kill kill; struct addrinfo *res[2], *resp[2]; struct sockaddr last_src, last_dst; unsigned int newkilled; int killed, sources, dests; int ret_ga; killed = sources = dests = 0; memset(&kill, 0, sizeof(kill)); memset(&kill.src.addr.v.a.mask, 0xff, sizeof(kill.src.addr.v.a.mask)); memset(&last_src, 0xff, sizeof(last_src)); memset(&last_dst, 0xff, sizeof(last_dst)); if (iface != NULL && strlcpy(kill.ifname, iface, sizeof(kill.ifname)) >= sizeof(kill.ifname)) errx(1, "invalid interface: %s", iface); pfctl_addrprefix(state_kill[0], &kill.src.addr.v.a.mask); if (opts & PF_OPT_KILLMATCH) kill.kill_match = true; if ((ret_ga = getaddrinfo(state_kill[0], NULL, NULL, &res[0]))) { errx(1, "getaddrinfo: %s", gai_strerror(ret_ga)); /* NOTREACHED */ } for (resp[0] = res[0]; resp[0]; resp[0] = resp[0]->ai_next) { if (resp[0]->ai_addr == NULL) continue; /* We get lots of duplicates. Catch the easy ones */ if (memcmp(&last_src, resp[0]->ai_addr, sizeof(last_src)) == 0) continue; last_src = *(struct sockaddr *)resp[0]->ai_addr; kill.af = resp[0]->ai_family; sources++; if (kill.af == AF_INET) kill.src.addr.v.a.addr.v4 = ((struct sockaddr_in *)resp[0]->ai_addr)->sin_addr; else if (kill.af == AF_INET6) kill.src.addr.v.a.addr.v6 = ((struct sockaddr_in6 *)resp[0]->ai_addr)-> sin6_addr; else errx(1, "Unknown address family %d", kill.af); if (state_killers > 1) { dests = 0; memset(&kill.dst.addr.v.a.mask, 0xff, sizeof(kill.dst.addr.v.a.mask)); memset(&last_dst, 0xff, sizeof(last_dst)); pfctl_addrprefix(state_kill[1], &kill.dst.addr.v.a.mask); if ((ret_ga = getaddrinfo(state_kill[1], NULL, NULL, &res[1]))) { errx(1, "getaddrinfo: %s", gai_strerror(ret_ga)); /* NOTREACHED */ } for (resp[1] = res[1]; resp[1]; resp[1] = resp[1]->ai_next) { if (resp[1]->ai_addr == NULL) continue; if (kill.af != resp[1]->ai_family) continue; if (memcmp(&last_dst, resp[1]->ai_addr, sizeof(last_dst)) == 0) continue; last_dst = *(struct sockaddr *)resp[1]->ai_addr; dests++; if (kill.af == AF_INET) kill.dst.addr.v.a.addr.v4 = ((struct sockaddr_in *)resp[1]-> ai_addr)->sin_addr; else if (kill.af == AF_INET6) kill.dst.addr.v.a.addr.v6 = ((struct sockaddr_in6 *)resp[1]-> ai_addr)->sin6_addr; else errx(1, "Unknown address family %d", kill.af); if (pfctl_kill_states(dev, &kill, &newkilled)) err(1, "DIOCKILLSTATES"); killed += newkilled; } freeaddrinfo(res[1]); } else { if (pfctl_kill_states(dev, &kill, &newkilled)) err(1, "DIOCKILLSTATES"); killed += newkilled; } } freeaddrinfo(res[0]); if ((opts & PF_OPT_QUIET) == 0) fprintf(stderr, "killed %d states from %d sources and %d " "destinations\n", killed, sources, dests); return (0); } int pfctl_gateway_kill_states(int dev, const char *iface, int opts) { struct pfctl_kill kill; struct addrinfo *res, *resp; struct sockaddr last_src; unsigned int newkilled; int killed = 0; int ret_ga; if (state_killers != 2 || (strlen(state_kill[1]) == 0)) { warnx("no gateway specified"); usage(); } memset(&kill, 0, sizeof(kill)); memset(&kill.rt_addr.addr.v.a.mask, 0xff, sizeof(kill.rt_addr.addr.v.a.mask)); memset(&last_src, 0xff, sizeof(last_src)); if (iface != NULL && strlcpy(kill.ifname, iface, sizeof(kill.ifname)) >= sizeof(kill.ifname)) errx(1, "invalid interface: %s", iface); if (opts & PF_OPT_KILLMATCH) kill.kill_match = true; pfctl_addrprefix(state_kill[1], &kill.rt_addr.addr.v.a.mask); if ((ret_ga = getaddrinfo(state_kill[1], NULL, NULL, &res))) { errx(1, "getaddrinfo: %s", gai_strerror(ret_ga)); /* NOTREACHED */ } for (resp = res; resp; resp = resp->ai_next) { if (resp->ai_addr == NULL) continue; /* We get lots of duplicates. Catch the easy ones */ if (memcmp(&last_src, resp->ai_addr, sizeof(last_src)) == 0) continue; last_src = *(struct sockaddr *)resp->ai_addr; kill.af = resp->ai_family; if (kill.af == AF_INET) kill.rt_addr.addr.v.a.addr.v4 = ((struct sockaddr_in *)resp->ai_addr)->sin_addr; else if (kill.af == AF_INET6) kill.rt_addr.addr.v.a.addr.v6 = ((struct sockaddr_in6 *)resp->ai_addr)-> sin6_addr; else errx(1, "Unknown address family %d", kill.af); if (pfctl_kill_states(dev, &kill, &newkilled)) err(1, "DIOCKILLSTATES"); killed += newkilled; } freeaddrinfo(res); if ((opts & PF_OPT_QUIET) == 0) fprintf(stderr, "killed %d states\n", killed); return (0); } int pfctl_label_kill_states(int dev, const char *iface, int opts) { struct pfctl_kill kill; unsigned int killed; if (state_killers != 2 || (strlen(state_kill[1]) == 0)) { warnx("no label specified"); usage(); } memset(&kill, 0, sizeof(kill)); if (iface != NULL && strlcpy(kill.ifname, iface, sizeof(kill.ifname)) >= sizeof(kill.ifname)) errx(1, "invalid interface: %s", iface); if (opts & PF_OPT_KILLMATCH) kill.kill_match = true; if (strlcpy(kill.label, state_kill[1], sizeof(kill.label)) >= sizeof(kill.label)) errx(1, "label too long: %s", state_kill[1]); if (pfctl_kill_states(dev, &kill, &killed)) err(1, "DIOCKILLSTATES"); if ((opts & PF_OPT_QUIET) == 0) fprintf(stderr, "killed %d states\n", killed); return (0); } int pfctl_id_kill_states(int dev, const char *iface, int opts) { struct pfctl_kill kill; unsigned int killed; if (state_killers != 2 || (strlen(state_kill[1]) == 0)) { warnx("no id specified"); usage(); } memset(&kill, 0, sizeof(kill)); if (opts & PF_OPT_KILLMATCH) kill.kill_match = true; if ((sscanf(state_kill[1], "%jx/%x", &kill.cmp.id, &kill.cmp.creatorid)) == 2) { } else if ((sscanf(state_kill[1], "%jx", &kill.cmp.id)) == 1) { kill.cmp.creatorid = 0; } else { warnx("wrong id format specified"); usage(); } if (kill.cmp.id == 0) { warnx("cannot kill id 0"); usage(); } if (pfctl_kill_states(dev, &kill, &killed)) err(1, "DIOCKILLSTATES"); if ((opts & PF_OPT_QUIET) == 0) fprintf(stderr, "killed %d states\n", killed); return (0); } int pfctl_get_pool(int dev, struct pfctl_pool *pool, u_int32_t nr, u_int32_t ticket, int r_action, char *anchorname) { struct pfioc_pooladdr pp; struct pf_pooladdr *pa; u_int32_t pnr, mpnr; memset(&pp, 0, sizeof(pp)); memcpy(pp.anchor, anchorname, sizeof(pp.anchor)); pp.r_action = r_action; pp.r_num = nr; pp.ticket = ticket; if (ioctl(dev, DIOCGETADDRS, &pp)) { warn("DIOCGETADDRS"); return (-1); } mpnr = pp.nr; TAILQ_INIT(&pool->list); for (pnr = 0; pnr < mpnr; ++pnr) { pp.nr = pnr; if (ioctl(dev, DIOCGETADDR, &pp)) { warn("DIOCGETADDR"); return (-1); } pa = calloc(1, sizeof(struct pf_pooladdr)); if (pa == NULL) err(1, "calloc"); bcopy(&pp.addr, pa, sizeof(struct pf_pooladdr)); TAILQ_INSERT_TAIL(&pool->list, pa, entries); } return (0); } void pfctl_move_pool(struct pfctl_pool *src, struct pfctl_pool *dst) { struct pf_pooladdr *pa; while ((pa = TAILQ_FIRST(&src->list)) != NULL) { TAILQ_REMOVE(&src->list, pa, entries); TAILQ_INSERT_TAIL(&dst->list, pa, entries); } } void pfctl_clear_pool(struct pfctl_pool *pool) { struct pf_pooladdr *pa; while ((pa = TAILQ_FIRST(&pool->list)) != NULL) { TAILQ_REMOVE(&pool->list, pa, entries); free(pa); } } void pfctl_print_eth_rule_counters(struct pfctl_eth_rule *rule, int opts) { if (opts & PF_OPT_VERBOSE) { printf(" [ Evaluations: %-8llu Packets: %-8llu " "Bytes: %-10llu]\n", (unsigned long long)rule->evaluations, (unsigned long long)(rule->packets[0] + rule->packets[1]), (unsigned long long)(rule->bytes[0] + rule->bytes[1])); } } void pfctl_print_rule_counters(struct pfctl_rule *rule, int opts) { if (opts & PF_OPT_DEBUG) { const char *t[PF_SKIP_COUNT] = { "i", "d", "f", "p", "sa", "sp", "da", "dp" }; int i; printf(" [ Skip steps: "); for (i = 0; i < PF_SKIP_COUNT; ++i) { if (rule->skip[i].nr == rule->nr + 1) continue; printf("%s=", t[i]); if (rule->skip[i].nr == -1) printf("end "); else printf("%u ", rule->skip[i].nr); } printf("]\n"); printf(" [ queue: qname=%s qid=%u pqname=%s pqid=%u ]\n", rule->qname, rule->qid, rule->pqname, rule->pqid); } if (opts & PF_OPT_VERBOSE) { printf(" [ Evaluations: %-8llu Packets: %-8llu " "Bytes: %-10llu States: %-6ju]\n", (unsigned long long)rule->evaluations, (unsigned long long)(rule->packets[0] + rule->packets[1]), (unsigned long long)(rule->bytes[0] + rule->bytes[1]), (uintmax_t)rule->states_cur); if (!(opts & PF_OPT_DEBUG)) printf(" [ Inserted: uid %u pid %u " "State Creations: %-6ju]\n", (unsigned)rule->cuid, (unsigned)rule->cpid, (uintmax_t)rule->states_tot); } } void pfctl_print_title(char *title) { if (!first_title) printf("\n"); first_title = 0; printf("%s\n", title); } int pfctl_show_eth_rules(int dev, char *path, int opts, enum pfctl_show format, char *anchorname, int depth) { char anchor_call[MAXPATHLEN]; struct pfctl_eth_rules_info info; struct pfctl_eth_rule rule; int dotitle = opts & PF_OPT_SHOWALL; int len = strlen(path); int brace; char *p; if (path[0]) snprintf(&path[len], MAXPATHLEN - len, "/%s", anchorname); else snprintf(&path[len], MAXPATHLEN - len, "%s", anchorname); if (pfctl_get_eth_rules_info(dev, &info, path)) { warn("DIOCGETETHRULES"); return (-1); } for (int nr = 0; nr < info.nr; nr++) { brace = 0; INDENT(depth, !(opts & PF_OPT_VERBOSE)); if (pfctl_get_eth_rule(dev, nr, info.ticket, path, &rule, opts & PF_OPT_CLRRULECTRS, anchor_call) != 0) { warn("DIOCGETETHRULE"); return (-1); } if (anchor_call[0] && ((((p = strrchr(anchor_call, '_')) != NULL) && (p == anchor_call || *(--p) == '/')) || (opts & PF_OPT_RECURSE))) { brace++; if ((p = strrchr(anchor_call, '/')) != NULL) p++; else p = &anchor_call[0]; } else p = &anchor_call[0]; if (dotitle) { pfctl_print_title("ETH RULES:"); dotitle = 0; } print_eth_rule(&rule, anchor_call, opts & (PF_OPT_VERBOSE2 | PF_OPT_DEBUG)); if (brace) printf(" {\n"); else printf("\n"); pfctl_print_eth_rule_counters(&rule, opts); if (brace) { pfctl_show_eth_rules(dev, path, opts, format, p, depth + 1); INDENT(depth, !(opts & PF_OPT_VERBOSE)); printf("}\n"); } } path[len] = '\0'; return (0); } int pfctl_show_rules(int dev, char *path, int opts, enum pfctl_show format, char *anchorname, int depth) { struct pfctl_rules_info ri; struct pfctl_rule rule; char anchor_call[MAXPATHLEN]; u_int32_t nr, header = 0; int rule_numbers = opts & (PF_OPT_VERBOSE2 | PF_OPT_DEBUG); int numeric = opts & PF_OPT_NUMERIC; int len = strlen(path); int brace; int ret; char *p; if (path[0]) snprintf(&path[len], MAXPATHLEN - len, "/%s", anchorname); else snprintf(&path[len], MAXPATHLEN - len, "%s", anchorname); if (opts & PF_OPT_SHOWALL) { ret = pfctl_get_rules_info(dev, &ri, PF_PASS, path); if (ret != 0) { warn("DIOCGETRULES"); goto error; } header++; } ret = pfctl_get_rules_info(dev, &ri, PF_SCRUB, path); if (ret != 0) { warn("DIOCGETRULES"); goto error; } if (opts & PF_OPT_SHOWALL) { if (format == PFCTL_SHOW_RULES && (ri.nr > 0 || header)) pfctl_print_title("FILTER RULES:"); else if (format == PFCTL_SHOW_LABELS && labels) pfctl_print_title("LABEL COUNTERS:"); } for (nr = 0; nr < ri.nr; ++nr) { if (pfctl_get_clear_rule(dev, nr, ri.ticket, path, PF_SCRUB, &rule, anchor_call, opts & PF_OPT_CLRRULECTRS)) { warn("DIOCGETRULENV"); goto error; } if (pfctl_get_pool(dev, &rule.rpool, nr, ri.ticket, PF_SCRUB, path) != 0) goto error; switch (format) { case PFCTL_SHOW_LABELS: break; case PFCTL_SHOW_RULES: if (rule.label[0] && (opts & PF_OPT_SHOWALL)) labels = 1; print_rule(&rule, anchor_call, rule_numbers, numeric); printf("\n"); pfctl_print_rule_counters(&rule, opts); break; case PFCTL_SHOW_NOTHING: break; } pfctl_clear_pool(&rule.rpool); } ret = pfctl_get_rules_info(dev, &ri, PF_PASS, path); if (ret != 0) { warn("DIOCGETRULES"); goto error; } for (nr = 0; nr < ri.nr; ++nr) { if (pfctl_get_clear_rule(dev, nr, ri.ticket, path, PF_PASS, &rule, anchor_call, opts & PF_OPT_CLRRULECTRS)) { warn("DIOCGETRULE"); goto error; } if (pfctl_get_pool(dev, &rule.rpool, nr, ri.ticket, PF_PASS, path) != 0) goto error; switch (format) { case PFCTL_SHOW_LABELS: { bool show = false; int i = 0; while (rule.label[i][0]) { printf("%s ", rule.label[i++]); show = true; } if (show) { printf("%llu %llu %llu %llu" " %llu %llu %llu %ju\n", (unsigned long long)rule.evaluations, (unsigned long long)(rule.packets[0] + rule.packets[1]), (unsigned long long)(rule.bytes[0] + rule.bytes[1]), (unsigned long long)rule.packets[0], (unsigned long long)rule.bytes[0], (unsigned long long)rule.packets[1], (unsigned long long)rule.bytes[1], (uintmax_t)rule.states_tot); } break; } case PFCTL_SHOW_RULES: brace = 0; if (rule.label[0] && (opts & PF_OPT_SHOWALL)) labels = 1; INDENT(depth, !(opts & PF_OPT_VERBOSE)); if (anchor_call[0] && ((((p = strrchr(anchor_call, '_')) != NULL) && ((void *)p == (void *)anchor_call || *(--p) == '/')) || (opts & PF_OPT_RECURSE))) { brace++; if ((p = strrchr(anchor_call, '/')) != NULL) p++; else p = &anchor_call[0]; } else p = &anchor_call[0]; print_rule(&rule, p, rule_numbers, numeric); if (brace) printf(" {\n"); else printf("\n"); pfctl_print_rule_counters(&rule, opts); if (brace) { pfctl_show_rules(dev, path, opts, format, p, depth + 1); INDENT(depth, !(opts & PF_OPT_VERBOSE)); printf("}\n"); } break; case PFCTL_SHOW_NOTHING: break; } pfctl_clear_pool(&rule.rpool); } path[len] = '\0'; return (0); error: path[len] = '\0'; return (-1); } int pfctl_show_nat(int dev, char *path, int opts, char *anchorname, int depth) { struct pfctl_rules_info ri; struct pfctl_rule rule; char anchor_call[MAXPATHLEN]; u_int32_t nr; static int nattype[3] = { PF_NAT, PF_RDR, PF_BINAT }; int i, dotitle = opts & PF_OPT_SHOWALL; int brace, ret; int len = strlen(path); char *p; if (path[0]) snprintf(&path[len], MAXPATHLEN - len, "/%s", anchorname); else snprintf(&path[len], MAXPATHLEN - len, "%s", anchorname); for (i = 0; i < 3; i++) { ret = pfctl_get_rules_info(dev, &ri, nattype[i], path); if (ret != 0) { warn("DIOCGETRULES"); return (-1); } for (nr = 0; nr < ri.nr; ++nr) { brace = 0; INDENT(depth, !(opts & PF_OPT_VERBOSE)); if (pfctl_get_rule(dev, nr, ri.ticket, path, nattype[i], &rule, anchor_call)) { warn("DIOCGETRULE"); return (-1); } if (pfctl_get_pool(dev, &rule.rpool, nr, ri.ticket, nattype[i], path) != 0) return (-1); if (anchor_call[0] && ((((p = strrchr(anchor_call, '_')) != NULL) && (p == anchor_call || *(--p) == '/')) || (opts & PF_OPT_RECURSE))) { brace++; if ((p = strrchr(anchor_call, '/')) != NULL) p++; else p = &anchor_call[0]; } else p = &anchor_call[0]; if (dotitle) { pfctl_print_title("TRANSLATION RULES:"); dotitle = 0; } print_rule(&rule, anchor_call, opts & PF_OPT_VERBOSE2, opts & PF_OPT_NUMERIC); if (brace) printf(" {\n"); else printf("\n"); pfctl_print_rule_counters(&rule, opts); pfctl_clear_pool(&rule.rpool); if (brace) { pfctl_show_nat(dev, path, opts, p, depth + 1); INDENT(depth, !(opts & PF_OPT_VERBOSE)); printf("}\n"); } } } return (0); } int pfctl_show_src_nodes(int dev, int opts) { struct pfioc_src_nodes psn; struct pf_src_node *p; char *inbuf = NULL, *newinbuf = NULL; unsigned int len = 0; int i; memset(&psn, 0, sizeof(psn)); for (;;) { psn.psn_len = len; if (len) { newinbuf = realloc(inbuf, len); if (newinbuf == NULL) err(1, "realloc"); psn.psn_buf = inbuf = newinbuf; } if (ioctl(dev, DIOCGETSRCNODES, &psn) < 0) { warn("DIOCGETSRCNODES"); free(inbuf); return (-1); } if (psn.psn_len + sizeof(struct pfioc_src_nodes) < len) break; if (len == 0 && psn.psn_len == 0) goto done; if (len == 0 && psn.psn_len != 0) len = psn.psn_len; if (psn.psn_len == 0) goto done; /* no src_nodes */ len *= 2; } p = psn.psn_src_nodes; if (psn.psn_len > 0 && (opts & PF_OPT_SHOWALL)) pfctl_print_title("SOURCE TRACKING NODES:"); for (i = 0; i < psn.psn_len; i += sizeof(*p)) { print_src_node(p, opts); p++; } done: free(inbuf); return (0); } int pfctl_show_states(int dev, const char *iface, int opts) { struct pfctl_states states; struct pfctl_state *s; int dotitle = (opts & PF_OPT_SHOWALL); memset(&states, 0, sizeof(states)); if (pfctl_get_states(dev, &states)) return (-1); TAILQ_FOREACH(s, &states.states, entry) { if (iface != NULL && strcmp(s->ifname, iface)) continue; if (dotitle) { pfctl_print_title("STATES:"); dotitle = 0; } print_state(s, opts); } pfctl_free_states(&states); return (0); } int pfctl_show_status(int dev, int opts) { struct pfctl_status *status; struct pfctl_syncookies cookies; if ((status = pfctl_get_status(dev)) == NULL) { warn("DIOCGETSTATUS"); return (-1); } if (pfctl_get_syncookies(dev, &cookies)) { pfctl_free_status(status); warn("DIOCGETSYNCOOKIES"); return (-1); } if (opts & PF_OPT_SHOWALL) pfctl_print_title("INFO:"); print_status(status, &cookies, opts); pfctl_free_status(status); return (0); } int pfctl_show_running(int dev) { struct pfctl_status *status; int running; if ((status = pfctl_get_status(dev)) == NULL) { warn("DIOCGETSTATUS"); return (-1); } running = status->running; print_running(status); pfctl_free_status(status); return (!running); } int pfctl_show_timeouts(int dev, int opts) { struct pfioc_tm pt; int i; if (opts & PF_OPT_SHOWALL) pfctl_print_title("TIMEOUTS:"); memset(&pt, 0, sizeof(pt)); for (i = 0; pf_timeouts[i].name; i++) { pt.timeout = pf_timeouts[i].timeout; if (ioctl(dev, DIOCGETTIMEOUT, &pt)) err(1, "DIOCGETTIMEOUT"); printf("%-20s %10d", pf_timeouts[i].name, pt.seconds); if (pf_timeouts[i].timeout >= PFTM_ADAPTIVE_START && pf_timeouts[i].timeout <= PFTM_ADAPTIVE_END) printf(" states"); else printf("s"); printf("\n"); } return (0); } int pfctl_show_limits(int dev, int opts) { struct pfioc_limit pl; int i; if (opts & PF_OPT_SHOWALL) pfctl_print_title("LIMITS:"); memset(&pl, 0, sizeof(pl)); for (i = 0; pf_limits[i].name; i++) { pl.index = pf_limits[i].index; if (ioctl(dev, DIOCGETLIMIT, &pl)) err(1, "DIOCGETLIMIT"); printf("%-13s ", pf_limits[i].name); if (pl.limit == UINT_MAX) printf("unlimited\n"); else printf("hard limit %8u\n", pl.limit); } return (0); } /* callbacks for rule/nat/rdr/addr */ int pfctl_add_pool(struct pfctl *pf, struct pfctl_pool *p, sa_family_t af) { struct pf_pooladdr *pa; if ((pf->opts & PF_OPT_NOACTION) == 0) { if (ioctl(pf->dev, DIOCBEGINADDRS, &pf->paddr)) err(1, "DIOCBEGINADDRS"); } pf->paddr.af = af; TAILQ_FOREACH(pa, &p->list, entries) { memcpy(&pf->paddr.addr, pa, sizeof(struct pf_pooladdr)); if ((pf->opts & PF_OPT_NOACTION) == 0) { if (ioctl(pf->dev, DIOCADDADDR, &pf->paddr)) err(1, "DIOCADDADDR"); } } return (0); } int pfctl_append_rule(struct pfctl *pf, struct pfctl_rule *r, const char *anchor_call) { u_int8_t rs_num; struct pfctl_rule *rule; struct pfctl_ruleset *rs; char *p; rs_num = pf_get_ruleset_number(r->action); if (rs_num == PF_RULESET_MAX) errx(1, "Invalid rule type %d", r->action); rs = &pf->anchor->ruleset; if (anchor_call[0] && r->anchor == NULL) { /* * Don't make non-brace anchors part of the main anchor pool. */ if ((r->anchor = calloc(1, sizeof(*r->anchor))) == NULL) err(1, "pfctl_append_rule: calloc"); pf_init_ruleset(&r->anchor->ruleset); r->anchor->ruleset.anchor = r->anchor; if (strlcpy(r->anchor->path, anchor_call, sizeof(rule->anchor->path)) >= sizeof(rule->anchor->path)) errx(1, "pfctl_append_rule: strlcpy"); if ((p = strrchr(anchor_call, '/')) != NULL) { if (!strlen(p)) err(1, "pfctl_append_rule: bad anchor name %s", anchor_call); } else p = (char *)anchor_call; if (strlcpy(r->anchor->name, p, sizeof(rule->anchor->name)) >= sizeof(rule->anchor->name)) errx(1, "pfctl_append_rule: strlcpy"); } if ((rule = calloc(1, sizeof(*rule))) == NULL) err(1, "calloc"); bcopy(r, rule, sizeof(*rule)); TAILQ_INIT(&rule->rpool.list); pfctl_move_pool(&r->rpool, &rule->rpool); TAILQ_INSERT_TAIL(rs->rules[rs_num].active.ptr, rule, entries); return (0); } int pfctl_append_eth_rule(struct pfctl *pf, struct pfctl_eth_rule *r, const char *anchor_call) { struct pfctl_eth_rule *rule; struct pfctl_eth_ruleset *rs; char *p; rs = &pf->eanchor->ruleset; if (anchor_call[0] && r->anchor == NULL) { /* * Don't make non-brace anchors part of the main anchor pool. */ if ((r->anchor = calloc(1, sizeof(*r->anchor))) == NULL) err(1, "pfctl_append_rule: calloc"); pf_init_eth_ruleset(&r->anchor->ruleset); r->anchor->ruleset.anchor = r->anchor; if (strlcpy(r->anchor->path, anchor_call, sizeof(rule->anchor->path)) >= sizeof(rule->anchor->path)) errx(1, "pfctl_append_rule: strlcpy"); if ((p = strrchr(anchor_call, '/')) != NULL) { if (!strlen(p)) err(1, "pfctl_append_eth_rule: bad anchor name %s", anchor_call); } else p = (char *)anchor_call; if (strlcpy(r->anchor->name, p, sizeof(rule->anchor->name)) >= sizeof(rule->anchor->name)) errx(1, "pfctl_append_eth_rule: strlcpy"); } if ((rule = calloc(1, sizeof(*rule))) == NULL) err(1, "calloc"); bcopy(r, rule, sizeof(*rule)); TAILQ_INSERT_TAIL(&rs->rules, rule, entries); return (0); } int pfctl_eth_ruleset_trans(struct pfctl *pf, char *path, struct pfctl_eth_anchor *a) { int osize = pf->trans->pfrb_size; if ((pf->loadopt & PFCTL_FLAG_ETH) != 0) { if (pfctl_add_trans(pf->trans, PF_RULESET_ETH, path)) return (1); } if (pfctl_trans(pf->dev, pf->trans, DIOCXBEGIN, osize)) return (5); return (0); } int pfctl_ruleset_trans(struct pfctl *pf, char *path, struct pfctl_anchor *a, bool do_eth) { int osize = pf->trans->pfrb_size; if ((pf->loadopt & PFCTL_FLAG_ETH) != 0 && do_eth) { if (pfctl_add_trans(pf->trans, PF_RULESET_ETH, path)) return (1); } if ((pf->loadopt & PFCTL_FLAG_NAT) != 0) { if (pfctl_add_trans(pf->trans, PF_RULESET_NAT, path) || pfctl_add_trans(pf->trans, PF_RULESET_BINAT, path) || pfctl_add_trans(pf->trans, PF_RULESET_RDR, path)) return (1); } if (a == pf->astack[0] && ((altqsupport && (pf->loadopt & PFCTL_FLAG_ALTQ) != 0))) { if (pfctl_add_trans(pf->trans, PF_RULESET_ALTQ, path)) return (2); } if ((pf->loadopt & PFCTL_FLAG_FILTER) != 0) { if (pfctl_add_trans(pf->trans, PF_RULESET_SCRUB, path) || pfctl_add_trans(pf->trans, PF_RULESET_FILTER, path)) return (3); } if (pf->loadopt & PFCTL_FLAG_TABLE) if (pfctl_add_trans(pf->trans, PF_RULESET_TABLE, path)) return (4); if (pfctl_trans(pf->dev, pf->trans, DIOCXBEGIN, osize)) return (5); return (0); } int pfctl_load_eth_ruleset(struct pfctl *pf, char *path, struct pfctl_eth_ruleset *rs, int depth) { struct pfctl_eth_rule *r; int error, len = strlen(path); int brace = 0; pf->eanchor = rs->anchor; if (path[0]) snprintf(&path[len], MAXPATHLEN - len, "/%s", pf->eanchor->name); else snprintf(&path[len], MAXPATHLEN - len, "%s", pf->eanchor->name); if (depth) { if (TAILQ_FIRST(&rs->rules) != NULL) { brace++; if (pf->opts & PF_OPT_VERBOSE) printf(" {\n"); if ((pf->opts & PF_OPT_NOACTION) == 0 && (error = pfctl_eth_ruleset_trans(pf, path, rs->anchor))) { printf("pfctl_load_eth_rulesets: " "pfctl_eth_ruleset_trans %d\n", error); goto error; } } else if (pf->opts & PF_OPT_VERBOSE) printf("\n"); } while ((r = TAILQ_FIRST(&rs->rules)) != NULL) { TAILQ_REMOVE(&rs->rules, r, entries); error = pfctl_load_eth_rule(pf, path, r, depth); if (error) return (error); if (r->anchor) { if ((error = pfctl_load_eth_ruleset(pf, path, &r->anchor->ruleset, depth + 1))) return (error); } else if (pf->opts & PF_OPT_VERBOSE) printf("\n"); free(r); } if (brace && pf->opts & PF_OPT_VERBOSE) { INDENT(depth - 1, (pf->opts & PF_OPT_VERBOSE)); printf("}\n"); } path[len] = '\0'; return (0); error: path[len] = '\0'; return (error); } int pfctl_load_eth_rule(struct pfctl *pf, char *path, struct pfctl_eth_rule *r, int depth) { char *name; char anchor[PF_ANCHOR_NAME_SIZE]; int len = strlen(path); if (strlcpy(anchor, path, sizeof(anchor)) >= sizeof(anchor)) errx(1, "pfctl_load_eth_rule: strlcpy"); if (r->anchor) { if (r->anchor->match) { if (path[0]) snprintf(&path[len], MAXPATHLEN - len, "/%s", r->anchor->name); else snprintf(&path[len], MAXPATHLEN - len, "%s", r->anchor->name); name = r->anchor->name; } else name = r->anchor->path; } else name = ""; if ((pf->opts & PF_OPT_NOACTION) == 0) if (pfctl_add_eth_rule(pf->dev, r, anchor, name, pf->eth_ticket)) err(1, "DIOCADDETHRULENV"); if (pf->opts & PF_OPT_VERBOSE) { INDENT(depth, !(pf->opts & PF_OPT_VERBOSE2)); print_eth_rule(r, r->anchor ? r->anchor->name : "", pf->opts & (PF_OPT_VERBOSE2 | PF_OPT_DEBUG)); } path[len] = '\0'; return (0); } int pfctl_load_ruleset(struct pfctl *pf, char *path, struct pfctl_ruleset *rs, int rs_num, int depth) { struct pfctl_rule *r; int error, len = strlen(path); int brace = 0; pf->anchor = rs->anchor; if (path[0]) snprintf(&path[len], MAXPATHLEN - len, "/%s", pf->anchor->name); else snprintf(&path[len], MAXPATHLEN - len, "%s", pf->anchor->name); if (depth) { if (TAILQ_FIRST(rs->rules[rs_num].active.ptr) != NULL) { brace++; if (pf->opts & PF_OPT_VERBOSE) printf(" {\n"); if ((pf->opts & PF_OPT_NOACTION) == 0 && (error = pfctl_ruleset_trans(pf, path, rs->anchor, false))) { printf("pfctl_load_rulesets: " "pfctl_ruleset_trans %d\n", error); goto error; } } else if (pf->opts & PF_OPT_VERBOSE) printf("\n"); } if (pf->optimize && rs_num == PF_RULESET_FILTER) pfctl_optimize_ruleset(pf, rs); while ((r = TAILQ_FIRST(rs->rules[rs_num].active.ptr)) != NULL) { TAILQ_REMOVE(rs->rules[rs_num].active.ptr, r, entries); for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) expand_label(r->label[i], PF_RULE_LABEL_SIZE, r); expand_label(r->tagname, PF_TAG_NAME_SIZE, r); expand_label(r->match_tagname, PF_TAG_NAME_SIZE, r); if ((error = pfctl_load_rule(pf, path, r, depth))) goto error; if (r->anchor) { if ((error = pfctl_load_ruleset(pf, path, &r->anchor->ruleset, rs_num, depth + 1))) goto error; } else if (pf->opts & PF_OPT_VERBOSE) printf("\n"); free(r); } if (brace && pf->opts & PF_OPT_VERBOSE) { INDENT(depth - 1, (pf->opts & PF_OPT_VERBOSE)); printf("}\n"); } path[len] = '\0'; return (0); error: path[len] = '\0'; return (error); } int pfctl_load_rule(struct pfctl *pf, char *path, struct pfctl_rule *r, int depth) { u_int8_t rs_num = pf_get_ruleset_number(r->action); char *name; u_int32_t ticket; char anchor[PF_ANCHOR_NAME_SIZE]; int len = strlen(path); + int error; + bool was_present; /* set up anchor before adding to path for anchor_call */ if ((pf->opts & PF_OPT_NOACTION) == 0) ticket = pfctl_get_ticket(pf->trans, rs_num, path); if (strlcpy(anchor, path, sizeof(anchor)) >= sizeof(anchor)) errx(1, "pfctl_load_rule: strlcpy"); if (r->anchor) { if (r->anchor->match) { if (path[0]) snprintf(&path[len], MAXPATHLEN - len, "/%s", r->anchor->name); else snprintf(&path[len], MAXPATHLEN - len, "%s", r->anchor->name); name = r->anchor->name; } else name = r->anchor->path; } else name = ""; + was_present = false; if ((pf->opts & PF_OPT_NOACTION) == 0) { if (pfctl_add_pool(pf, &r->rpool, r->af)) return (1); - if (pfctl_add_rule(pf->dev, r, anchor, name, ticket, - pf->paddr.ticket)) + error = pfctl_add_rule(pf->dev, r, anchor, name, ticket, + pf->paddr.ticket); + switch (error) { + case 0: + /* things worked, do nothing */ + break; + case EEXIST: + /* an identical rule is already present */ + was_present = true; + break; + default: err(1, "DIOCADDRULENV"); + } } if (pf->opts & PF_OPT_VERBOSE) { INDENT(depth, !(pf->opts & PF_OPT_VERBOSE2)); print_rule(r, r->anchor ? r->anchor->name : "", pf->opts & PF_OPT_VERBOSE2, pf->opts & PF_OPT_NUMERIC); + if (was_present) + printf(" -- rule was already present"); } path[len] = '\0'; pfctl_clear_pool(&r->rpool); return (0); } int pfctl_add_altq(struct pfctl *pf, struct pf_altq *a) { if (altqsupport && (loadopt & PFCTL_FLAG_ALTQ) != 0) { memcpy(&pf->paltq->altq, a, sizeof(struct pf_altq)); if ((pf->opts & PF_OPT_NOACTION) == 0) { if (ioctl(pf->dev, DIOCADDALTQ, pf->paltq)) { if (errno == ENXIO) errx(1, "qtype not configured"); else if (errno == ENODEV) errx(1, "%s: driver does not support " "altq", a->ifname); else err(1, "DIOCADDALTQ"); } } pfaltq_store(&pf->paltq->altq); } return (0); } int pfctl_rules(int dev, char *filename, int opts, int optimize, char *anchorname, struct pfr_buffer *trans) { #define ERR(x) do { warn(x); goto _error; } while(0) #define ERRX(x) do { warnx(x); goto _error; } while(0) struct pfr_buffer *t, buf; struct pfioc_altq pa; struct pfctl pf; struct pfctl_ruleset *rs; struct pfctl_eth_ruleset *ethrs; struct pfr_table trs; char *path; int osize; RB_INIT(&pf_anchors); memset(&pf_main_anchor, 0, sizeof(pf_main_anchor)); pf_init_ruleset(&pf_main_anchor.ruleset); pf_main_anchor.ruleset.anchor = &pf_main_anchor; memset(&pf_eth_main_anchor, 0, sizeof(pf_eth_main_anchor)); pf_init_eth_ruleset(&pf_eth_main_anchor.ruleset); pf_eth_main_anchor.ruleset.anchor = &pf_eth_main_anchor; if (trans == NULL) { bzero(&buf, sizeof(buf)); buf.pfrb_type = PFRB_TRANS; t = &buf; osize = 0; } else { t = trans; osize = t->pfrb_size; } memset(&pa, 0, sizeof(pa)); pa.version = PFIOC_ALTQ_VERSION; memset(&pf, 0, sizeof(pf)); memset(&trs, 0, sizeof(trs)); if ((path = calloc(1, MAXPATHLEN)) == NULL) ERRX("pfctl_rules: calloc"); if (strlcpy(trs.pfrt_anchor, anchorname, sizeof(trs.pfrt_anchor)) >= sizeof(trs.pfrt_anchor)) ERRX("pfctl_rules: strlcpy"); pf.dev = dev; pf.opts = opts; pf.optimize = optimize; pf.loadopt = loadopt; /* non-brace anchor, create without resolving the path */ if ((pf.anchor = calloc(1, sizeof(*pf.anchor))) == NULL) ERRX("pfctl_rules: calloc"); rs = &pf.anchor->ruleset; pf_init_ruleset(rs); rs->anchor = pf.anchor; if (strlcpy(pf.anchor->path, anchorname, sizeof(pf.anchor->path)) >= sizeof(pf.anchor->path)) errx(1, "pfctl_rules: strlcpy"); if (strlcpy(pf.anchor->name, anchorname, sizeof(pf.anchor->name)) >= sizeof(pf.anchor->name)) errx(1, "pfctl_rules: strlcpy"); pf.astack[0] = pf.anchor; pf.asd = 0; if (anchorname[0]) pf.loadopt &= ~PFCTL_FLAG_ALTQ; pf.paltq = &pa; pf.trans = t; pfctl_init_options(&pf); /* Set up ethernet anchor */ if ((pf.eanchor = calloc(1, sizeof(*pf.eanchor))) == NULL) ERRX("pfctl_rules: calloc"); if (strlcpy(pf.eanchor->path, anchorname, sizeof(pf.eanchor->path)) >= sizeof(pf.eanchor->path)) errx(1, "pfctl_rules: strlcpy"); if (strlcpy(pf.eanchor->name, anchorname, sizeof(pf.eanchor->name)) >= sizeof(pf.eanchor->name)) errx(1, "pfctl_rules: strlcpy"); ethrs = &pf.eanchor->ruleset; pf_init_eth_ruleset(ethrs); ethrs->anchor = pf.eanchor; pf.eastack[0] = pf.eanchor; if ((opts & PF_OPT_NOACTION) == 0) { /* * XXX For the time being we need to open transactions for * the main ruleset before parsing, because tables are still * loaded at parse time. */ if (pfctl_ruleset_trans(&pf, anchorname, pf.anchor, true)) ERRX("pfctl_rules"); if (pf.loadopt & PFCTL_FLAG_ETH) pf.eth_ticket = pfctl_get_ticket(t, PF_RULESET_ETH, anchorname); if (altqsupport && (pf.loadopt & PFCTL_FLAG_ALTQ)) pa.ticket = pfctl_get_ticket(t, PF_RULESET_ALTQ, anchorname); if (pf.loadopt & PFCTL_FLAG_TABLE) pf.astack[0]->ruleset.tticket = pfctl_get_ticket(t, PF_RULESET_TABLE, anchorname); } if (parse_config(filename, &pf) < 0) { if ((opts & PF_OPT_NOACTION) == 0) ERRX("Syntax error in config file: " "pf rules not loaded"); else goto _error; } if (loadopt & PFCTL_FLAG_OPTION) pfctl_adjust_skip_ifaces(&pf); if ((pf.loadopt & PFCTL_FLAG_FILTER && (pfctl_load_ruleset(&pf, path, rs, PF_RULESET_SCRUB, 0))) || (pf.loadopt & PFCTL_FLAG_ETH && (pfctl_load_eth_ruleset(&pf, path, ethrs, 0))) || (pf.loadopt & PFCTL_FLAG_NAT && (pfctl_load_ruleset(&pf, path, rs, PF_RULESET_NAT, 0) || pfctl_load_ruleset(&pf, path, rs, PF_RULESET_RDR, 0) || pfctl_load_ruleset(&pf, path, rs, PF_RULESET_BINAT, 0))) || (pf.loadopt & PFCTL_FLAG_FILTER && pfctl_load_ruleset(&pf, path, rs, PF_RULESET_FILTER, 0))) { if ((opts & PF_OPT_NOACTION) == 0) ERRX("Unable to load rules into kernel"); else goto _error; } if ((altqsupport && (pf.loadopt & PFCTL_FLAG_ALTQ) != 0)) if (check_commit_altq(dev, opts) != 0) ERRX("errors in altq config"); /* process "load anchor" directives */ if (!anchorname[0]) if (pfctl_load_anchors(dev, &pf, t) == -1) ERRX("load anchors"); if (trans == NULL && (opts & PF_OPT_NOACTION) == 0) { if (!anchorname[0]) if (pfctl_load_options(&pf)) goto _error; if (pfctl_trans(dev, t, DIOCXCOMMIT, osize)) ERR("DIOCXCOMMIT"); } free(path); return (0); _error: if (trans == NULL) { /* main ruleset */ if ((opts & PF_OPT_NOACTION) == 0) if (pfctl_trans(dev, t, DIOCXROLLBACK, osize)) err(1, "DIOCXROLLBACK"); exit(1); } else { /* sub ruleset */ free(path); return (-1); } #undef ERR #undef ERRX } FILE * pfctl_fopen(const char *name, const char *mode) { struct stat st; FILE *fp; fp = fopen(name, mode); if (fp == NULL) return (NULL); if (fstat(fileno(fp), &st)) { fclose(fp); return (NULL); } if (S_ISDIR(st.st_mode)) { fclose(fp); errno = EISDIR; return (NULL); } return (fp); } void pfctl_init_options(struct pfctl *pf) { pf->timeout[PFTM_TCP_FIRST_PACKET] = PFTM_TCP_FIRST_PACKET_VAL; pf->timeout[PFTM_TCP_OPENING] = PFTM_TCP_OPENING_VAL; pf->timeout[PFTM_TCP_ESTABLISHED] = PFTM_TCP_ESTABLISHED_VAL; pf->timeout[PFTM_TCP_CLOSING] = PFTM_TCP_CLOSING_VAL; pf->timeout[PFTM_TCP_FIN_WAIT] = PFTM_TCP_FIN_WAIT_VAL; pf->timeout[PFTM_TCP_CLOSED] = PFTM_TCP_CLOSED_VAL; pf->timeout[PFTM_UDP_FIRST_PACKET] = PFTM_UDP_FIRST_PACKET_VAL; pf->timeout[PFTM_UDP_SINGLE] = PFTM_UDP_SINGLE_VAL; pf->timeout[PFTM_UDP_MULTIPLE] = PFTM_UDP_MULTIPLE_VAL; pf->timeout[PFTM_ICMP_FIRST_PACKET] = PFTM_ICMP_FIRST_PACKET_VAL; pf->timeout[PFTM_ICMP_ERROR_REPLY] = PFTM_ICMP_ERROR_REPLY_VAL; pf->timeout[PFTM_OTHER_FIRST_PACKET] = PFTM_OTHER_FIRST_PACKET_VAL; pf->timeout[PFTM_OTHER_SINGLE] = PFTM_OTHER_SINGLE_VAL; pf->timeout[PFTM_OTHER_MULTIPLE] = PFTM_OTHER_MULTIPLE_VAL; pf->timeout[PFTM_FRAG] = PFTM_FRAG_VAL; pf->timeout[PFTM_INTERVAL] = PFTM_INTERVAL_VAL; pf->timeout[PFTM_SRC_NODE] = PFTM_SRC_NODE_VAL; pf->timeout[PFTM_TS_DIFF] = PFTM_TS_DIFF_VAL; pf->timeout[PFTM_ADAPTIVE_START] = PFSTATE_ADAPT_START; pf->timeout[PFTM_ADAPTIVE_END] = PFSTATE_ADAPT_END; pf->limit[PF_LIMIT_STATES] = PFSTATE_HIWAT; pf->limit[PF_LIMIT_FRAGS] = PFFRAG_FRENT_HIWAT; pf->limit[PF_LIMIT_SRC_NODES] = PFSNODE_HIWAT; pf->limit[PF_LIMIT_TABLE_ENTRIES] = PFR_KENTRY_HIWAT; pf->debug = PF_DEBUG_URGENT; pf->syncookies = false; pf->syncookieswat[0] = PF_SYNCOOKIES_LOWATPCT; pf->syncookieswat[1] = PF_SYNCOOKIES_HIWATPCT; } int pfctl_load_options(struct pfctl *pf) { int i, error = 0; if ((loadopt & PFCTL_FLAG_OPTION) == 0) return (0); /* load limits */ for (i = 0; i < PF_LIMIT_MAX; i++) { if ((pf->opts & PF_OPT_MERGE) && !pf->limit_set[i]) continue; if (pfctl_load_limit(pf, i, pf->limit[i])) error = 1; } /* * If we've set the limit, but haven't explicitly set adaptive * timeouts, do it now with a start of 60% and end of 120%. */ if (pf->limit_set[PF_LIMIT_STATES] && !pf->timeout_set[PFTM_ADAPTIVE_START] && !pf->timeout_set[PFTM_ADAPTIVE_END]) { pf->timeout[PFTM_ADAPTIVE_START] = (pf->limit[PF_LIMIT_STATES] / 10) * 6; pf->timeout_set[PFTM_ADAPTIVE_START] = 1; pf->timeout[PFTM_ADAPTIVE_END] = (pf->limit[PF_LIMIT_STATES] / 10) * 12; pf->timeout_set[PFTM_ADAPTIVE_END] = 1; } /* load timeouts */ for (i = 0; i < PFTM_MAX; i++) { if ((pf->opts & PF_OPT_MERGE) && !pf->timeout_set[i]) continue; if (pfctl_load_timeout(pf, i, pf->timeout[i])) error = 1; } /* load debug */ if (!(pf->opts & PF_OPT_MERGE) || pf->debug_set) if (pfctl_load_debug(pf, pf->debug)) error = 1; /* load logif */ if (!(pf->opts & PF_OPT_MERGE) || pf->ifname_set) if (pfctl_load_logif(pf, pf->ifname)) error = 1; /* load hostid */ if (!(pf->opts & PF_OPT_MERGE) || pf->hostid_set) if (pfctl_load_hostid(pf, pf->hostid)) error = 1; /* load keepcounters */ if (pfctl_set_keepcounters(pf->dev, pf->keep_counters)) error = 1; /* load syncookies settings */ if (pfctl_load_syncookies(pf, pf->syncookies)) error = 1; return (error); } int pfctl_set_limit(struct pfctl *pf, const char *opt, unsigned int limit) { int i; for (i = 0; pf_limits[i].name; i++) { if (strcasecmp(opt, pf_limits[i].name) == 0) { pf->limit[pf_limits[i].index] = limit; pf->limit_set[pf_limits[i].index] = 1; break; } } if (pf_limits[i].name == NULL) { warnx("Bad pool name."); return (1); } if (pf->opts & PF_OPT_VERBOSE) printf("set limit %s %d\n", opt, limit); return (0); } int pfctl_load_limit(struct pfctl *pf, unsigned int index, unsigned int limit) { struct pfioc_limit pl; memset(&pl, 0, sizeof(pl)); pl.index = index; pl.limit = limit; if (ioctl(pf->dev, DIOCSETLIMIT, &pl)) { if (errno == EBUSY) warnx("Current pool size exceeds requested hard limit"); else warnx("DIOCSETLIMIT"); return (1); } return (0); } int pfctl_set_timeout(struct pfctl *pf, const char *opt, int seconds, int quiet) { int i; if ((loadopt & PFCTL_FLAG_OPTION) == 0) return (0); for (i = 0; pf_timeouts[i].name; i++) { if (strcasecmp(opt, pf_timeouts[i].name) == 0) { pf->timeout[pf_timeouts[i].timeout] = seconds; pf->timeout_set[pf_timeouts[i].timeout] = 1; break; } } if (pf_timeouts[i].name == NULL) { warnx("Bad timeout name."); return (1); } if (pf->opts & PF_OPT_VERBOSE && ! quiet) printf("set timeout %s %d\n", opt, seconds); return (0); } int pfctl_load_timeout(struct pfctl *pf, unsigned int timeout, unsigned int seconds) { struct pfioc_tm pt; memset(&pt, 0, sizeof(pt)); pt.timeout = timeout; pt.seconds = seconds; if (ioctl(pf->dev, DIOCSETTIMEOUT, &pt)) { warnx("DIOCSETTIMEOUT"); return (1); } return (0); } int pfctl_set_optimization(struct pfctl *pf, const char *opt) { const struct pf_hint *hint; int i, r; if ((loadopt & PFCTL_FLAG_OPTION) == 0) return (0); for (i = 0; pf_hints[i].name; i++) if (strcasecmp(opt, pf_hints[i].name) == 0) break; hint = pf_hints[i].hint; if (hint == NULL) { warnx("invalid state timeouts optimization"); return (1); } for (i = 0; hint[i].name; i++) if ((r = pfctl_set_timeout(pf, hint[i].name, hint[i].timeout, 1))) return (r); if (pf->opts & PF_OPT_VERBOSE) printf("set optimization %s\n", opt); return (0); } int pfctl_set_logif(struct pfctl *pf, char *ifname) { if ((loadopt & PFCTL_FLAG_OPTION) == 0) return (0); if (!strcmp(ifname, "none")) { free(pf->ifname); pf->ifname = NULL; } else { pf->ifname = strdup(ifname); if (!pf->ifname) errx(1, "pfctl_set_logif: strdup"); } pf->ifname_set = 1; if (pf->opts & PF_OPT_VERBOSE) printf("set loginterface %s\n", ifname); return (0); } int pfctl_load_logif(struct pfctl *pf, char *ifname) { struct pfioc_if pi; memset(&pi, 0, sizeof(pi)); if (ifname && strlcpy(pi.ifname, ifname, sizeof(pi.ifname)) >= sizeof(pi.ifname)) { warnx("pfctl_load_logif: strlcpy"); return (1); } if (ioctl(pf->dev, DIOCSETSTATUSIF, &pi)) { warnx("DIOCSETSTATUSIF"); return (1); } return (0); } int pfctl_set_hostid(struct pfctl *pf, u_int32_t hostid) { if ((loadopt & PFCTL_FLAG_OPTION) == 0) return (0); HTONL(hostid); pf->hostid = hostid; pf->hostid_set = 1; if (pf->opts & PF_OPT_VERBOSE) printf("set hostid 0x%08x\n", ntohl(hostid)); return (0); } int pfctl_load_hostid(struct pfctl *pf, u_int32_t hostid) { if (ioctl(dev, DIOCSETHOSTID, &hostid)) { warnx("DIOCSETHOSTID"); return (1); } return (0); } int pfctl_load_syncookies(struct pfctl *pf, u_int8_t val) { struct pfctl_syncookies cookies; bzero(&cookies, sizeof(cookies)); cookies.mode = val; cookies.lowwater = pf->syncookieswat[0]; cookies.highwater = pf->syncookieswat[1]; if (pfctl_set_syncookies(dev, &cookies)) { warnx("DIOCSETSYNCOOKIES"); return (1); } return (0); } int pfctl_cfg_syncookies(struct pfctl *pf, uint8_t val, struct pfctl_watermarks *w) { if (val != PF_SYNCOOKIES_ADAPTIVE && w != NULL) { warnx("syncookies start/end only apply to adaptive"); return (1); } if (val == PF_SYNCOOKIES_ADAPTIVE && w != NULL) { if (!w->hi) w->hi = PF_SYNCOOKIES_HIWATPCT; if (!w->lo) w->lo = w->hi / 2; if (w->lo >= w->hi) { warnx("start must be higher than end"); return (1); } pf->syncookieswat[0] = w->lo; pf->syncookieswat[1] = w->hi; pf->syncookieswat_set = 1; } if (pf->opts & PF_OPT_VERBOSE) { if (val == PF_SYNCOOKIES_NEVER) printf("set syncookies never\n"); else if (val == PF_SYNCOOKIES_ALWAYS) printf("set syncookies always\n"); else if (val == PF_SYNCOOKIES_ADAPTIVE) { if (pf->syncookieswat_set) printf("set syncookies adaptive (start %u%%, " "end %u%%)\n", pf->syncookieswat[1], pf->syncookieswat[0]); else printf("set syncookies adaptive\n"); } else { /* cannot happen */ warnx("king bula ate all syncookies"); return (1); } } pf->syncookies = val; return (0); } int pfctl_set_debug(struct pfctl *pf, char *d) { u_int32_t level; if ((loadopt & PFCTL_FLAG_OPTION) == 0) return (0); if (!strcmp(d, "none")) pf->debug = PF_DEBUG_NONE; else if (!strcmp(d, "urgent")) pf->debug = PF_DEBUG_URGENT; else if (!strcmp(d, "misc")) pf->debug = PF_DEBUG_MISC; else if (!strcmp(d, "loud")) pf->debug = PF_DEBUG_NOISY; else { warnx("unknown debug level \"%s\"", d); return (-1); } pf->debug_set = 1; level = pf->debug; if ((pf->opts & PF_OPT_NOACTION) == 0) if (ioctl(dev, DIOCSETDEBUG, &level)) err(1, "DIOCSETDEBUG"); if (pf->opts & PF_OPT_VERBOSE) printf("set debug %s\n", d); return (0); } int pfctl_load_debug(struct pfctl *pf, unsigned int level) { if (ioctl(pf->dev, DIOCSETDEBUG, &level)) { warnx("DIOCSETDEBUG"); return (1); } return (0); } int pfctl_set_interface_flags(struct pfctl *pf, char *ifname, int flags, int how) { struct pfioc_iface pi; struct node_host *h = NULL, *n = NULL; if ((loadopt & PFCTL_FLAG_OPTION) == 0) return (0); bzero(&pi, sizeof(pi)); pi.pfiio_flags = flags; /* Make sure our cache matches the kernel. If we set or clear the flag * for a group this applies to all members. */ h = ifa_grouplookup(ifname, 0); for (n = h; n != NULL; n = n->next) pfctl_set_interface_flags(pf, n->ifname, flags, how); if (strlcpy(pi.pfiio_name, ifname, sizeof(pi.pfiio_name)) >= sizeof(pi.pfiio_name)) errx(1, "pfctl_set_interface_flags: strlcpy"); if ((pf->opts & PF_OPT_NOACTION) == 0) { if (how == 0) { if (ioctl(pf->dev, DIOCCLRIFFLAG, &pi)) err(1, "DIOCCLRIFFLAG"); } else { if (ioctl(pf->dev, DIOCSETIFFLAG, &pi)) err(1, "DIOCSETIFFLAG"); pfctl_check_skip_ifaces(ifname); } } return (0); } void pfctl_debug(int dev, u_int32_t level, int opts) { if (ioctl(dev, DIOCSETDEBUG, &level)) err(1, "DIOCSETDEBUG"); if ((opts & PF_OPT_QUIET) == 0) { fprintf(stderr, "debug level set to '"); switch (level) { case PF_DEBUG_NONE: fprintf(stderr, "none"); break; case PF_DEBUG_URGENT: fprintf(stderr, "urgent"); break; case PF_DEBUG_MISC: fprintf(stderr, "misc"); break; case PF_DEBUG_NOISY: fprintf(stderr, "loud"); break; default: fprintf(stderr, ""); break; } fprintf(stderr, "'\n"); } } int pfctl_test_altqsupport(int dev, int opts) { struct pfioc_altq pa; pa.version = PFIOC_ALTQ_VERSION; if (ioctl(dev, DIOCGETALTQS, &pa)) { if (errno == ENODEV) { if (opts & PF_OPT_VERBOSE) fprintf(stderr, "No ALTQ support in kernel\n" "ALTQ related functions disabled\n"); return (0); } else err(1, "DIOCGETALTQS"); } return (1); } int pfctl_show_anchors(int dev, int opts, char *anchorname) { struct pfioc_ruleset pr; u_int32_t mnr, nr; memset(&pr, 0, sizeof(pr)); memcpy(pr.path, anchorname, sizeof(pr.path)); if (ioctl(dev, DIOCGETRULESETS, &pr)) { if (errno == EINVAL) fprintf(stderr, "Anchor '%s' not found.\n", anchorname); else err(1, "DIOCGETRULESETS"); return (-1); } mnr = pr.nr; for (nr = 0; nr < mnr; ++nr) { char sub[MAXPATHLEN]; pr.nr = nr; if (ioctl(dev, DIOCGETRULESET, &pr)) err(1, "DIOCGETRULESET"); if (!strcmp(pr.name, PF_RESERVED_ANCHOR)) continue; sub[0] = 0; if (pr.path[0]) { strlcat(sub, pr.path, sizeof(sub)); strlcat(sub, "/", sizeof(sub)); } strlcat(sub, pr.name, sizeof(sub)); if (sub[0] != '_' || (opts & PF_OPT_VERBOSE)) printf(" %s\n", sub); if ((opts & PF_OPT_VERBOSE) && pfctl_show_anchors(dev, opts, sub)) return (-1); } return (0); } int pfctl_show_eth_anchors(int dev, int opts, char *anchorname) { struct pfctl_eth_rulesets_info ri; struct pfctl_eth_ruleset_info rs; int ret; if ((ret = pfctl_get_eth_rulesets_info(dev, &ri, anchorname)) != 0) { if (ret == ENOENT) fprintf(stderr, "Anchor '%s' not found.\n", anchorname); else err(1, "DIOCGETETHRULESETS"); return (-1); } for (int nr = 0; nr < ri.nr; nr++) { char sub[MAXPATHLEN]; if (pfctl_get_eth_ruleset(dev, anchorname, nr, &rs) != 0) err(1, "DIOCGETETHRULESET"); if (!strcmp(rs.name, PF_RESERVED_ANCHOR)) continue; sub[0] = 0; if (rs.path[0]) { strlcat(sub, rs.path, sizeof(sub)); strlcat(sub, "/", sizeof(sub)); } strlcat(sub, rs.name, sizeof(sub)); if (sub[0] != '_' || (opts & PF_OPT_VERBOSE)) printf(" %s\n", sub); if ((opts & PF_OPT_VERBOSE) && pfctl_show_eth_anchors(dev, opts, sub)) return (-1); } return (0); } const char * pfctl_lookup_option(char *cmd, const char * const *list) { if (cmd != NULL && *cmd) for (; *list; list++) if (!strncmp(cmd, *list, strlen(cmd))) return (*list); return (NULL); } int main(int argc, char *argv[]) { int error = 0; int ch; int mode = O_RDONLY; int opts = 0; int optimize = PF_OPTIMIZE_BASIC; char anchorname[MAXPATHLEN]; char *path; if (argc < 2) usage(); while ((ch = getopt(argc, argv, "a:AdD:eqf:F:ghi:k:K:mMnNOo:Pp:rRs:t:T:vx:z")) != -1) { switch (ch) { case 'a': anchoropt = optarg; break; case 'd': opts |= PF_OPT_DISABLE; mode = O_RDWR; break; case 'D': if (pfctl_cmdline_symset(optarg) < 0) warnx("could not parse macro definition %s", optarg); break; case 'e': opts |= PF_OPT_ENABLE; mode = O_RDWR; break; case 'q': opts |= PF_OPT_QUIET; break; case 'F': clearopt = pfctl_lookup_option(optarg, clearopt_list); if (clearopt == NULL) { warnx("Unknown flush modifier '%s'", optarg); usage(); } mode = O_RDWR; break; case 'i': ifaceopt = optarg; break; case 'k': if (state_killers >= 2) { warnx("can only specify -k twice"); usage(); /* NOTREACHED */ } state_kill[state_killers++] = optarg; mode = O_RDWR; break; case 'K': if (src_node_killers >= 2) { warnx("can only specify -K twice"); usage(); /* NOTREACHED */ } src_node_kill[src_node_killers++] = optarg; mode = O_RDWR; break; case 'm': opts |= PF_OPT_MERGE; break; case 'M': opts |= PF_OPT_KILLMATCH; break; case 'n': opts |= PF_OPT_NOACTION; break; case 'N': loadopt |= PFCTL_FLAG_NAT; break; case 'r': opts |= PF_OPT_USEDNS; break; case 'f': rulesopt = optarg; mode = O_RDWR; break; case 'g': opts |= PF_OPT_DEBUG; break; case 'A': loadopt |= PFCTL_FLAG_ALTQ; break; case 'R': loadopt |= PFCTL_FLAG_FILTER; break; case 'o': optiopt = pfctl_lookup_option(optarg, optiopt_list); if (optiopt == NULL) { warnx("Unknown optimization '%s'", optarg); usage(); } opts |= PF_OPT_OPTIMIZE; break; case 'O': loadopt |= PFCTL_FLAG_OPTION; break; case 'p': pf_device = optarg; break; case 'P': opts |= PF_OPT_NUMERIC; break; case 's': showopt = pfctl_lookup_option(optarg, showopt_list); if (showopt == NULL) { warnx("Unknown show modifier '%s'", optarg); usage(); } break; case 't': tableopt = optarg; break; case 'T': tblcmdopt = pfctl_lookup_option(optarg, tblcmdopt_list); if (tblcmdopt == NULL) { warnx("Unknown table command '%s'", optarg); usage(); } break; case 'v': if (opts & PF_OPT_VERBOSE) opts |= PF_OPT_VERBOSE2; opts |= PF_OPT_VERBOSE; break; case 'x': debugopt = pfctl_lookup_option(optarg, debugopt_list); if (debugopt == NULL) { warnx("Unknown debug level '%s'", optarg); usage(); } mode = O_RDWR; break; case 'z': opts |= PF_OPT_CLRRULECTRS; mode = O_RDWR; break; case 'h': /* FALLTHROUGH */ default: usage(); /* NOTREACHED */ } } if (tblcmdopt != NULL) { argc -= optind; argv += optind; ch = *tblcmdopt; if (ch == 'l') { loadopt |= PFCTL_FLAG_TABLE; tblcmdopt = NULL; } else mode = strchr("acdefkrz", ch) ? O_RDWR : O_RDONLY; } else if (argc != optind) { warnx("unknown command line argument: %s ...", argv[optind]); usage(); /* NOTREACHED */ } if (loadopt == 0) loadopt = ~0; if ((path = calloc(1, MAXPATHLEN)) == NULL) errx(1, "pfctl: calloc"); memset(anchorname, 0, sizeof(anchorname)); if (anchoropt != NULL) { int len = strlen(anchoropt); if (anchoropt[len - 1] == '*') { if (len >= 2 && anchoropt[len - 2] == '/') anchoropt[len - 2] = '\0'; else anchoropt[len - 1] = '\0'; opts |= PF_OPT_RECURSE; } if (strlcpy(anchorname, anchoropt, sizeof(anchorname)) >= sizeof(anchorname)) errx(1, "anchor name '%s' too long", anchoropt); loadopt &= PFCTL_FLAG_FILTER|PFCTL_FLAG_NAT|PFCTL_FLAG_TABLE|PFCTL_FLAG_ETH; } if ((opts & PF_OPT_NOACTION) == 0) { dev = open(pf_device, mode); if (dev == -1) err(1, "%s", pf_device); altqsupport = pfctl_test_altqsupport(dev, opts); } else { dev = open(pf_device, O_RDONLY); if (dev >= 0) opts |= PF_OPT_DUMMYACTION; /* turn off options */ opts &= ~ (PF_OPT_DISABLE | PF_OPT_ENABLE); clearopt = showopt = debugopt = NULL; #if !defined(ENABLE_ALTQ) altqsupport = 0; #else altqsupport = 1; #endif } if (opts & PF_OPT_DISABLE) if (pfctl_disable(dev, opts)) error = 1; if (showopt != NULL) { switch (*showopt) { case 'A': pfctl_show_anchors(dev, opts, anchorname); pfctl_show_eth_anchors(dev, opts, anchorname); break; case 'r': pfctl_load_fingerprints(dev, opts); pfctl_show_rules(dev, path, opts, PFCTL_SHOW_RULES, anchorname, 0); break; case 'l': pfctl_load_fingerprints(dev, opts); pfctl_show_rules(dev, path, opts, PFCTL_SHOW_LABELS, anchorname, 0); break; case 'n': pfctl_load_fingerprints(dev, opts); pfctl_show_nat(dev, path, opts, anchorname, 0); break; case 'q': pfctl_show_altq(dev, ifaceopt, opts, opts & PF_OPT_VERBOSE2); break; case 's': pfctl_show_states(dev, ifaceopt, opts); break; case 'S': pfctl_show_src_nodes(dev, opts); break; case 'i': pfctl_show_status(dev, opts); break; case 'R': error = pfctl_show_running(dev); break; case 't': pfctl_show_timeouts(dev, opts); break; case 'm': pfctl_show_limits(dev, opts); break; case 'e': pfctl_show_eth_rules(dev, path, opts, 0, anchorname, 0); break; case 'a': opts |= PF_OPT_SHOWALL; pfctl_load_fingerprints(dev, opts); pfctl_show_eth_rules(dev, path, opts, 0, anchorname, 0); pfctl_show_nat(dev, path, opts, anchorname, 0); pfctl_show_rules(dev, path, opts, 0, anchorname, 0); pfctl_show_altq(dev, ifaceopt, opts, 0); pfctl_show_states(dev, ifaceopt, opts); pfctl_show_src_nodes(dev, opts); pfctl_show_status(dev, opts); pfctl_show_rules(dev, path, opts, 1, anchorname, 0); pfctl_show_timeouts(dev, opts); pfctl_show_limits(dev, opts); pfctl_show_tables(anchorname, opts); pfctl_show_fingerprints(opts); break; case 'T': pfctl_show_tables(anchorname, opts); break; case 'o': pfctl_load_fingerprints(dev, opts); pfctl_show_fingerprints(opts); break; case 'I': pfctl_show_ifaces(ifaceopt, opts); break; } } if ((opts & PF_OPT_CLRRULECTRS) && showopt == NULL) { pfctl_show_eth_rules(dev, path, opts, PFCTL_SHOW_NOTHING, anchorname, 0); pfctl_show_rules(dev, path, opts, PFCTL_SHOW_NOTHING, anchorname, 0); } if (clearopt != NULL) { if (anchorname[0] == '_' || strstr(anchorname, "/_") != NULL) errx(1, "anchor names beginning with '_' cannot " "be modified from the command line"); switch (*clearopt) { case 'e': pfctl_flush_eth_rules(dev, opts, anchorname); break; case 'r': pfctl_flush_rules(dev, opts, anchorname); break; case 'n': pfctl_flush_nat(dev, opts, anchorname); break; case 'q': pfctl_clear_altq(dev, opts); break; case 's': pfctl_clear_iface_states(dev, ifaceopt, opts); break; case 'S': pfctl_clear_src_nodes(dev, opts); break; case 'i': pfctl_clear_stats(dev, opts); break; case 'a': pfctl_flush_eth_rules(dev, opts, anchorname); pfctl_flush_rules(dev, opts, anchorname); pfctl_flush_nat(dev, opts, anchorname); pfctl_clear_tables(anchorname, opts); if (!*anchorname) { pfctl_clear_altq(dev, opts); pfctl_clear_iface_states(dev, ifaceopt, opts); pfctl_clear_src_nodes(dev, opts); pfctl_clear_stats(dev, opts); pfctl_clear_fingerprints(dev, opts); pfctl_clear_interface_flags(dev, opts); } break; case 'o': pfctl_clear_fingerprints(dev, opts); break; case 'T': pfctl_clear_tables(anchorname, opts); break; } } if (state_killers) { if (!strcmp(state_kill[0], "label")) pfctl_label_kill_states(dev, ifaceopt, opts); else if (!strcmp(state_kill[0], "id")) pfctl_id_kill_states(dev, ifaceopt, opts); else if (!strcmp(state_kill[0], "gateway")) pfctl_gateway_kill_states(dev, ifaceopt, opts); else pfctl_net_kill_states(dev, ifaceopt, opts); } if (src_node_killers) pfctl_kill_src_nodes(dev, ifaceopt, opts); if (tblcmdopt != NULL) { error = pfctl_command_tables(argc, argv, tableopt, tblcmdopt, rulesopt, anchorname, opts); rulesopt = NULL; } if (optiopt != NULL) { switch (*optiopt) { case 'n': optimize = 0; break; case 'b': optimize |= PF_OPTIMIZE_BASIC; break; case 'o': case 'p': optimize |= PF_OPTIMIZE_PROFILE; break; } } if ((rulesopt != NULL) && (loadopt & PFCTL_FLAG_OPTION) && !anchorname[0] && !(opts & PF_OPT_NOACTION)) if (pfctl_get_skip_ifaces()) error = 1; if (rulesopt != NULL && !(opts & (PF_OPT_MERGE|PF_OPT_NOACTION)) && !anchorname[0] && (loadopt & PFCTL_FLAG_OPTION)) if (pfctl_file_fingerprints(dev, opts, PF_OSFP_FILE)) error = 1; if (rulesopt != NULL) { if (anchorname[0] == '_' || strstr(anchorname, "/_") != NULL) errx(1, "anchor names beginning with '_' cannot " "be modified from the command line"); if (pfctl_rules(dev, rulesopt, opts, optimize, anchorname, NULL)) error = 1; else if (!(opts & PF_OPT_NOACTION) && (loadopt & PFCTL_FLAG_TABLE)) warn_namespace_collision(NULL); } if (opts & PF_OPT_ENABLE) if (pfctl_enable(dev, opts)) error = 1; if (debugopt != NULL) { switch (*debugopt) { case 'n': pfctl_debug(dev, PF_DEBUG_NONE, opts); break; case 'u': pfctl_debug(dev, PF_DEBUG_URGENT, opts); break; case 'm': pfctl_debug(dev, PF_DEBUG_MISC, opts); break; case 'l': pfctl_debug(dev, PF_DEBUG_NOISY, opts); break; } } exit(error); } diff --git a/sys/netpfil/pf/pf_ioctl.c b/sys/netpfil/pf/pf_ioctl.c index eae7b3bf1fa0..c170a270454b 100644 --- a/sys/netpfil/pf/pf_ioctl.c +++ b/sys/netpfil/pf/pf_ioctl.c @@ -1,6751 +1,6752 @@ /*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2001 Daniel Hartmeier * Copyright (c) 2002,2003 Henning Brauer * Copyright (c) 2012 Gleb Smirnoff * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * * Effort sponsored in part by the Defense Advanced Research Projects * Agency (DARPA) and Air Force Research Laboratory, Air Force * Materiel Command, USAF, under agreement number F30602-01-2-0537. * * $OpenBSD: pf_ioctl.c,v 1.213 2009/02/15 21:46:12 mbalmer Exp $ */ #include __FBSDID("$FreeBSD$"); #include "opt_inet.h" #include "opt_inet6.h" #include "opt_bpf.h" #include "opt_pf.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef INET6 #include #endif /* INET6 */ #ifdef ALTQ #include #endif SDT_PROBE_DEFINE3(pf, ioctl, ioctl, error, "int", "int", "int"); SDT_PROBE_DEFINE3(pf, ioctl, function, error, "char *", "int", "int"); SDT_PROBE_DEFINE2(pf, ioctl, addrule, error, "int", "int"); SDT_PROBE_DEFINE2(pf, ioctl, nvchk, error, "int", "int"); static struct pf_kpool *pf_get_kpool(const char *, u_int32_t, u_int8_t, u_int32_t, u_int8_t, u_int8_t, u_int8_t); static void pf_mv_kpool(struct pf_kpalist *, struct pf_kpalist *); static void pf_empty_kpool(struct pf_kpalist *); static int pfioctl(struct cdev *, u_long, caddr_t, int, struct thread *); static int pf_begin_eth(uint32_t *, const char *); static void pf_rollback_eth_cb(struct epoch_context *); static int pf_rollback_eth(uint32_t, const char *); static int pf_commit_eth(uint32_t, const char *); static void pf_free_eth_rule(struct pf_keth_rule *); #ifdef ALTQ static int pf_begin_altq(u_int32_t *); static int pf_rollback_altq(u_int32_t); static int pf_commit_altq(u_int32_t); static int pf_enable_altq(struct pf_altq *); static int pf_disable_altq(struct pf_altq *); static uint16_t pf_qname2qid(const char *); static void pf_qid_unref(uint16_t); #endif /* ALTQ */ static int pf_begin_rules(u_int32_t *, int, const char *); static int pf_rollback_rules(u_int32_t, int, char *); static int pf_setup_pfsync_matching(struct pf_kruleset *); static void pf_hash_rule_rolling(MD5_CTX *, struct pf_krule *); static void pf_hash_rule(struct pf_krule *); static void pf_hash_rule_addr(MD5_CTX *, struct pf_rule_addr *); static int pf_commit_rules(u_int32_t, int, char *); static int pf_addr_setup(struct pf_kruleset *, struct pf_addr_wrap *, sa_family_t); static void pf_addr_copyout(struct pf_addr_wrap *); static void pf_src_node_copy(const struct pf_ksrc_node *, struct pf_src_node *); #ifdef ALTQ static int pf_export_kaltq(struct pf_altq *, struct pfioc_altq_v1 *, size_t); static int pf_import_kaltq(struct pfioc_altq_v1 *, struct pf_altq *, size_t); #endif /* ALTQ */ VNET_DEFINE(struct pf_krule, pf_default_rule); static __inline int pf_krule_compare(struct pf_krule *, struct pf_krule *); RB_GENERATE(pf_krule_global, pf_krule, entry_global, pf_krule_compare); #ifdef ALTQ VNET_DEFINE_STATIC(int, pf_altq_running); #define V_pf_altq_running VNET(pf_altq_running) #endif #define TAGID_MAX 50000 struct pf_tagname { TAILQ_ENTRY(pf_tagname) namehash_entries; TAILQ_ENTRY(pf_tagname) taghash_entries; char name[PF_TAG_NAME_SIZE]; uint16_t tag; int ref; }; struct pf_tagset { TAILQ_HEAD(, pf_tagname) *namehash; TAILQ_HEAD(, pf_tagname) *taghash; unsigned int mask; uint32_t seed; BITSET_DEFINE(, TAGID_MAX) avail; }; VNET_DEFINE(struct pf_tagset, pf_tags); #define V_pf_tags VNET(pf_tags) static unsigned int pf_rule_tag_hashsize; #define PF_RULE_TAG_HASH_SIZE_DEFAULT 128 SYSCTL_UINT(_net_pf, OID_AUTO, rule_tag_hashsize, CTLFLAG_RDTUN, &pf_rule_tag_hashsize, PF_RULE_TAG_HASH_SIZE_DEFAULT, "Size of pf(4) rule tag hashtable"); #ifdef ALTQ VNET_DEFINE(struct pf_tagset, pf_qids); #define V_pf_qids VNET(pf_qids) static unsigned int pf_queue_tag_hashsize; #define PF_QUEUE_TAG_HASH_SIZE_DEFAULT 128 SYSCTL_UINT(_net_pf, OID_AUTO, queue_tag_hashsize, CTLFLAG_RDTUN, &pf_queue_tag_hashsize, PF_QUEUE_TAG_HASH_SIZE_DEFAULT, "Size of pf(4) queue tag hashtable"); #endif VNET_DEFINE(uma_zone_t, pf_tag_z); #define V_pf_tag_z VNET(pf_tag_z) static MALLOC_DEFINE(M_PFALTQ, "pf_altq", "pf(4) altq configuration db"); static MALLOC_DEFINE(M_PFRULE, "pf_rule", "pf(4) rules"); #if (PF_QNAME_SIZE != PF_TAG_NAME_SIZE) #error PF_QNAME_SIZE must be equal to PF_TAG_NAME_SIZE #endif static void pf_init_tagset(struct pf_tagset *, unsigned int *, unsigned int); static void pf_cleanup_tagset(struct pf_tagset *); static uint16_t tagname2hashindex(const struct pf_tagset *, const char *); static uint16_t tag2hashindex(const struct pf_tagset *, uint16_t); static u_int16_t tagname2tag(struct pf_tagset *, const char *); static u_int16_t pf_tagname2tag(const char *); static void tag_unref(struct pf_tagset *, u_int16_t); #define DPFPRINTF(n, x) if (V_pf_status.debug >= (n)) printf x struct cdev *pf_dev; /* * XXX - These are new and need to be checked when moveing to a new version */ static void pf_clear_all_states(void); static unsigned int pf_clear_states(const struct pf_kstate_kill *); static void pf_killstates(struct pf_kstate_kill *, unsigned int *); static int pf_killstates_row(struct pf_kstate_kill *, struct pf_idhash *); static int pf_killstates_nv(struct pfioc_nv *); static int pf_clearstates_nv(struct pfioc_nv *); static int pf_getstate(struct pfioc_nv *); static int pf_getstatus(struct pfioc_nv *); static int pf_clear_tables(void); static void pf_clear_srcnodes(struct pf_ksrc_node *); static void pf_kill_srcnodes(struct pfioc_src_node_kill *); static int pf_keepcounters(struct pfioc_nv *); static void pf_tbladdr_copyout(struct pf_addr_wrap *); /* * Wrapper functions for pfil(9) hooks */ static pfil_return_t pf_eth_check_in(struct mbuf **m, struct ifnet *ifp, int flags, void *ruleset __unused, struct inpcb *inp); static pfil_return_t pf_eth_check_out(struct mbuf **m, struct ifnet *ifp, int flags, void *ruleset __unused, struct inpcb *inp); #ifdef INET static pfil_return_t pf_check_in(struct mbuf **m, struct ifnet *ifp, int flags, void *ruleset __unused, struct inpcb *inp); static pfil_return_t pf_check_out(struct mbuf **m, struct ifnet *ifp, int flags, void *ruleset __unused, struct inpcb *inp); #endif #ifdef INET6 static pfil_return_t pf_check6_in(struct mbuf **m, struct ifnet *ifp, int flags, void *ruleset __unused, struct inpcb *inp); static pfil_return_t pf_check6_out(struct mbuf **m, struct ifnet *ifp, int flags, void *ruleset __unused, struct inpcb *inp); #endif static void hook_pf_eth(void); static void hook_pf(void); static void dehook_pf_eth(void); static void dehook_pf(void); static int shutdown_pf(void); static int pf_load(void); static void pf_unload(void); static struct cdevsw pf_cdevsw = { .d_ioctl = pfioctl, .d_name = PF_NAME, .d_version = D_VERSION, }; volatile VNET_DEFINE_STATIC(int, pf_pfil_hooked); #define V_pf_pfil_hooked VNET(pf_pfil_hooked) volatile VNET_DEFINE_STATIC(int, pf_pfil_eth_hooked); #define V_pf_pfil_eth_hooked VNET(pf_pfil_eth_hooked) /* * We need a flag that is neither hooked nor running to know when * the VNET is "valid". We primarily need this to control (global) * external event, e.g., eventhandlers. */ VNET_DEFINE(int, pf_vnet_active); #define V_pf_vnet_active VNET(pf_vnet_active) int pf_end_threads; struct proc *pf_purge_proc; struct rmlock pf_rules_lock; struct sx pf_ioctl_lock; struct sx pf_end_lock; /* pfsync */ VNET_DEFINE(pfsync_state_import_t *, pfsync_state_import_ptr); VNET_DEFINE(pfsync_insert_state_t *, pfsync_insert_state_ptr); VNET_DEFINE(pfsync_update_state_t *, pfsync_update_state_ptr); VNET_DEFINE(pfsync_delete_state_t *, pfsync_delete_state_ptr); VNET_DEFINE(pfsync_clear_states_t *, pfsync_clear_states_ptr); VNET_DEFINE(pfsync_defer_t *, pfsync_defer_ptr); pfsync_detach_ifnet_t *pfsync_detach_ifnet_ptr; /* pflog */ pflog_packet_t *pflog_packet_ptr = NULL; /* * Copy a user-provided string, returning an error if truncation would occur. * Avoid scanning past "sz" bytes in the source string since there's no * guarantee that it's nul-terminated. */ static int pf_user_strcpy(char *dst, const char *src, size_t sz) { if (strnlen(src, sz) == sz) return (EINVAL); (void)strlcpy(dst, src, sz); return (0); } static void pfattach_vnet(void) { u_int32_t *my_timeout = V_pf_default_rule.timeout; pf_initialize(); pfr_initialize(); pfi_initialize_vnet(); pf_normalize_init(); pf_syncookies_init(); V_pf_limits[PF_LIMIT_STATES].limit = PFSTATE_HIWAT; V_pf_limits[PF_LIMIT_SRC_NODES].limit = PFSNODE_HIWAT; RB_INIT(&V_pf_anchors); pf_init_kruleset(&pf_main_ruleset); pf_init_keth(V_pf_keth); /* default rule should never be garbage collected */ V_pf_default_rule.entries.tqe_prev = &V_pf_default_rule.entries.tqe_next; #ifdef PF_DEFAULT_TO_DROP V_pf_default_rule.action = PF_DROP; #else V_pf_default_rule.action = PF_PASS; #endif V_pf_default_rule.nr = -1; V_pf_default_rule.rtableid = -1; pf_counter_u64_init(&V_pf_default_rule.evaluations, M_WAITOK); for (int i = 0; i < 2; i++) { pf_counter_u64_init(&V_pf_default_rule.packets[i], M_WAITOK); pf_counter_u64_init(&V_pf_default_rule.bytes[i], M_WAITOK); } V_pf_default_rule.states_cur = counter_u64_alloc(M_WAITOK); V_pf_default_rule.states_tot = counter_u64_alloc(M_WAITOK); V_pf_default_rule.src_nodes = counter_u64_alloc(M_WAITOK); #ifdef PF_WANT_32_TO_64_COUNTER V_pf_kifmarker = malloc(sizeof(*V_pf_kifmarker), PFI_MTYPE, M_WAITOK | M_ZERO); V_pf_rulemarker = malloc(sizeof(*V_pf_rulemarker), M_PFRULE, M_WAITOK | M_ZERO); PF_RULES_WLOCK(); LIST_INSERT_HEAD(&V_pf_allkiflist, V_pf_kifmarker, pfik_allkiflist); LIST_INSERT_HEAD(&V_pf_allrulelist, &V_pf_default_rule, allrulelist); V_pf_allrulecount++; LIST_INSERT_HEAD(&V_pf_allrulelist, V_pf_rulemarker, allrulelist); PF_RULES_WUNLOCK(); #endif /* initialize default timeouts */ my_timeout[PFTM_TCP_FIRST_PACKET] = PFTM_TCP_FIRST_PACKET_VAL; my_timeout[PFTM_TCP_OPENING] = PFTM_TCP_OPENING_VAL; my_timeout[PFTM_TCP_ESTABLISHED] = PFTM_TCP_ESTABLISHED_VAL; my_timeout[PFTM_TCP_CLOSING] = PFTM_TCP_CLOSING_VAL; my_timeout[PFTM_TCP_FIN_WAIT] = PFTM_TCP_FIN_WAIT_VAL; my_timeout[PFTM_TCP_CLOSED] = PFTM_TCP_CLOSED_VAL; my_timeout[PFTM_UDP_FIRST_PACKET] = PFTM_UDP_FIRST_PACKET_VAL; my_timeout[PFTM_UDP_SINGLE] = PFTM_UDP_SINGLE_VAL; my_timeout[PFTM_UDP_MULTIPLE] = PFTM_UDP_MULTIPLE_VAL; my_timeout[PFTM_ICMP_FIRST_PACKET] = PFTM_ICMP_FIRST_PACKET_VAL; my_timeout[PFTM_ICMP_ERROR_REPLY] = PFTM_ICMP_ERROR_REPLY_VAL; my_timeout[PFTM_OTHER_FIRST_PACKET] = PFTM_OTHER_FIRST_PACKET_VAL; my_timeout[PFTM_OTHER_SINGLE] = PFTM_OTHER_SINGLE_VAL; my_timeout[PFTM_OTHER_MULTIPLE] = PFTM_OTHER_MULTIPLE_VAL; my_timeout[PFTM_FRAG] = PFTM_FRAG_VAL; my_timeout[PFTM_INTERVAL] = PFTM_INTERVAL_VAL; my_timeout[PFTM_SRC_NODE] = PFTM_SRC_NODE_VAL; my_timeout[PFTM_TS_DIFF] = PFTM_TS_DIFF_VAL; my_timeout[PFTM_ADAPTIVE_START] = PFSTATE_ADAPT_START; my_timeout[PFTM_ADAPTIVE_END] = PFSTATE_ADAPT_END; bzero(&V_pf_status, sizeof(V_pf_status)); V_pf_status.debug = PF_DEBUG_URGENT; V_pf_pfil_hooked = 0; V_pf_pfil_eth_hooked = 0; /* XXX do our best to avoid a conflict */ V_pf_status.hostid = arc4random(); for (int i = 0; i < PFRES_MAX; i++) V_pf_status.counters[i] = counter_u64_alloc(M_WAITOK); for (int i = 0; i < KLCNT_MAX; i++) V_pf_status.lcounters[i] = counter_u64_alloc(M_WAITOK); for (int i = 0; i < FCNT_MAX; i++) pf_counter_u64_init(&V_pf_status.fcounters[i], M_WAITOK); for (int i = 0; i < SCNT_MAX; i++) V_pf_status.scounters[i] = counter_u64_alloc(M_WAITOK); if (swi_add(&V_pf_swi_ie, "pf send", pf_intr, curvnet, SWI_NET, INTR_MPSAFE, &V_pf_swi_cookie) != 0) /* XXXGL: leaked all above. */ return; } static struct pf_kpool * pf_get_kpool(const char *anchor, u_int32_t ticket, u_int8_t rule_action, u_int32_t rule_number, u_int8_t r_last, u_int8_t active, u_int8_t check_ticket) { struct pf_kruleset *ruleset; struct pf_krule *rule; int rs_num; ruleset = pf_find_kruleset(anchor); if (ruleset == NULL) return (NULL); rs_num = pf_get_ruleset_number(rule_action); if (rs_num >= PF_RULESET_MAX) return (NULL); if (active) { if (check_ticket && ticket != ruleset->rules[rs_num].active.ticket) return (NULL); if (r_last) rule = TAILQ_LAST(ruleset->rules[rs_num].active.ptr, pf_krulequeue); else rule = TAILQ_FIRST(ruleset->rules[rs_num].active.ptr); } else { if (check_ticket && ticket != ruleset->rules[rs_num].inactive.ticket) return (NULL); if (r_last) rule = TAILQ_LAST(ruleset->rules[rs_num].inactive.ptr, pf_krulequeue); else rule = TAILQ_FIRST(ruleset->rules[rs_num].inactive.ptr); } if (!r_last) { while ((rule != NULL) && (rule->nr != rule_number)) rule = TAILQ_NEXT(rule, entries); } if (rule == NULL) return (NULL); return (&rule->rpool); } static void pf_mv_kpool(struct pf_kpalist *poola, struct pf_kpalist *poolb) { struct pf_kpooladdr *mv_pool_pa; while ((mv_pool_pa = TAILQ_FIRST(poola)) != NULL) { TAILQ_REMOVE(poola, mv_pool_pa, entries); TAILQ_INSERT_TAIL(poolb, mv_pool_pa, entries); } } static void pf_empty_kpool(struct pf_kpalist *poola) { struct pf_kpooladdr *pa; while ((pa = TAILQ_FIRST(poola)) != NULL) { switch (pa->addr.type) { case PF_ADDR_DYNIFTL: pfi_dynaddr_remove(pa->addr.p.dyn); break; case PF_ADDR_TABLE: /* XXX: this could be unfinished pooladdr on pabuf */ if (pa->addr.p.tbl != NULL) pfr_detach_table(pa->addr.p.tbl); break; } if (pa->kif) pfi_kkif_unref(pa->kif); TAILQ_REMOVE(poola, pa, entries); free(pa, M_PFRULE); } } static void pf_unlink_rule_locked(struct pf_krulequeue *rulequeue, struct pf_krule *rule) { PF_RULES_WASSERT(); PF_UNLNKDRULES_ASSERT(); TAILQ_REMOVE(rulequeue, rule, entries); rule->rule_ref |= PFRULE_REFS; TAILQ_INSERT_TAIL(&V_pf_unlinked_rules, rule, entries); } static void pf_unlink_rule(struct pf_krulequeue *rulequeue, struct pf_krule *rule) { PF_RULES_WASSERT(); PF_UNLNKDRULES_LOCK(); pf_unlink_rule_locked(rulequeue, rule); PF_UNLNKDRULES_UNLOCK(); } static void pf_free_eth_rule(struct pf_keth_rule *rule) { PF_RULES_WASSERT(); if (rule == NULL) return; if (rule->tag) tag_unref(&V_pf_tags, rule->tag); #ifdef ALTQ pf_qid_unref(rule->qid); #endif if (rule->kif) pfi_kkif_unref(rule->kif); counter_u64_free(rule->evaluations); for (int i = 0; i < 2; i++) { counter_u64_free(rule->packets[i]); counter_u64_free(rule->bytes[i]); } pf_keth_anchor_remove(rule); free(rule, M_PFRULE); } void pf_free_rule(struct pf_krule *rule) { PF_RULES_WASSERT(); PF_CONFIG_ASSERT(); if (rule->tag) tag_unref(&V_pf_tags, rule->tag); if (rule->match_tag) tag_unref(&V_pf_tags, rule->match_tag); #ifdef ALTQ if (rule->pqid != rule->qid) pf_qid_unref(rule->pqid); pf_qid_unref(rule->qid); #endif switch (rule->src.addr.type) { case PF_ADDR_DYNIFTL: pfi_dynaddr_remove(rule->src.addr.p.dyn); break; case PF_ADDR_TABLE: pfr_detach_table(rule->src.addr.p.tbl); break; } switch (rule->dst.addr.type) { case PF_ADDR_DYNIFTL: pfi_dynaddr_remove(rule->dst.addr.p.dyn); break; case PF_ADDR_TABLE: pfr_detach_table(rule->dst.addr.p.tbl); break; } if (rule->overload_tbl) pfr_detach_table(rule->overload_tbl); if (rule->kif) pfi_kkif_unref(rule->kif); pf_kanchor_remove(rule); pf_empty_kpool(&rule->rpool.list); pf_krule_free(rule); } static void pf_init_tagset(struct pf_tagset *ts, unsigned int *tunable_size, unsigned int default_size) { unsigned int i; unsigned int hashsize; if (*tunable_size == 0 || !powerof2(*tunable_size)) *tunable_size = default_size; hashsize = *tunable_size; ts->namehash = mallocarray(hashsize, sizeof(*ts->namehash), M_PFHASH, M_WAITOK); ts->taghash = mallocarray(hashsize, sizeof(*ts->taghash), M_PFHASH, M_WAITOK); ts->mask = hashsize - 1; ts->seed = arc4random(); for (i = 0; i < hashsize; i++) { TAILQ_INIT(&ts->namehash[i]); TAILQ_INIT(&ts->taghash[i]); } BIT_FILL(TAGID_MAX, &ts->avail); } static void pf_cleanup_tagset(struct pf_tagset *ts) { unsigned int i; unsigned int hashsize; struct pf_tagname *t, *tmp; /* * Only need to clean up one of the hashes as each tag is hashed * into each table. */ hashsize = ts->mask + 1; for (i = 0; i < hashsize; i++) TAILQ_FOREACH_SAFE(t, &ts->namehash[i], namehash_entries, tmp) uma_zfree(V_pf_tag_z, t); free(ts->namehash, M_PFHASH); free(ts->taghash, M_PFHASH); } static uint16_t tagname2hashindex(const struct pf_tagset *ts, const char *tagname) { size_t len; len = strnlen(tagname, PF_TAG_NAME_SIZE - 1); return (murmur3_32_hash(tagname, len, ts->seed) & ts->mask); } static uint16_t tag2hashindex(const struct pf_tagset *ts, uint16_t tag) { return (tag & ts->mask); } static u_int16_t tagname2tag(struct pf_tagset *ts, const char *tagname) { struct pf_tagname *tag; u_int32_t index; u_int16_t new_tagid; PF_RULES_WASSERT(); index = tagname2hashindex(ts, tagname); TAILQ_FOREACH(tag, &ts->namehash[index], namehash_entries) if (strcmp(tagname, tag->name) == 0) { tag->ref++; return (tag->tag); } /* * new entry * * to avoid fragmentation, we do a linear search from the beginning * and take the first free slot we find. */ new_tagid = BIT_FFS(TAGID_MAX, &ts->avail); /* * Tags are 1-based, with valid tags in the range [1..TAGID_MAX]. * BIT_FFS() returns a 1-based bit number, with 0 indicating no bits * set. It may also return a bit number greater than TAGID_MAX due * to rounding of the number of bits in the vector up to a multiple * of the vector word size at declaration/allocation time. */ if ((new_tagid == 0) || (new_tagid > TAGID_MAX)) return (0); /* Mark the tag as in use. Bits are 0-based for BIT_CLR() */ BIT_CLR(TAGID_MAX, new_tagid - 1, &ts->avail); /* allocate and fill new struct pf_tagname */ tag = uma_zalloc(V_pf_tag_z, M_NOWAIT); if (tag == NULL) return (0); strlcpy(tag->name, tagname, sizeof(tag->name)); tag->tag = new_tagid; tag->ref = 1; /* Insert into namehash */ TAILQ_INSERT_TAIL(&ts->namehash[index], tag, namehash_entries); /* Insert into taghash */ index = tag2hashindex(ts, new_tagid); TAILQ_INSERT_TAIL(&ts->taghash[index], tag, taghash_entries); return (tag->tag); } static void tag_unref(struct pf_tagset *ts, u_int16_t tag) { struct pf_tagname *t; uint16_t index; PF_RULES_WASSERT(); index = tag2hashindex(ts, tag); TAILQ_FOREACH(t, &ts->taghash[index], taghash_entries) if (tag == t->tag) { if (--t->ref == 0) { TAILQ_REMOVE(&ts->taghash[index], t, taghash_entries); index = tagname2hashindex(ts, t->name); TAILQ_REMOVE(&ts->namehash[index], t, namehash_entries); /* Bits are 0-based for BIT_SET() */ BIT_SET(TAGID_MAX, tag - 1, &ts->avail); uma_zfree(V_pf_tag_z, t); } break; } } static uint16_t pf_tagname2tag(const char *tagname) { return (tagname2tag(&V_pf_tags, tagname)); } static int pf_begin_eth(uint32_t *ticket, const char *anchor) { struct pf_keth_rule *rule, *tmp; struct pf_keth_ruleset *rs; PF_RULES_WASSERT(); rs = pf_find_or_create_keth_ruleset(anchor); if (rs == NULL) return (EINVAL); if (rs->inactive.open) /* We may be waiting for NET_EPOCH_CALL(pf_rollback_eth_cb) to * finish. */ return (EBUSY); /* Purge old inactive rules. */ TAILQ_FOREACH_SAFE(rule, rs->inactive.rules, entries, tmp) { TAILQ_REMOVE(rs->inactive.rules, rule, entries); pf_free_eth_rule(rule); } *ticket = ++rs->inactive.ticket; rs->inactive.open = 1; return (0); } static void pf_rollback_eth_cb(struct epoch_context *ctx) { struct pf_keth_ruleset *rs; rs = __containerof(ctx, struct pf_keth_ruleset, epoch_ctx); CURVNET_SET(rs->vnet); PF_RULES_WLOCK(); pf_rollback_eth(rs->inactive.ticket, rs->anchor ? rs->anchor->path : ""); PF_RULES_WUNLOCK(); CURVNET_RESTORE(); } static int pf_rollback_eth(uint32_t ticket, const char *anchor) { struct pf_keth_rule *rule, *tmp; struct pf_keth_ruleset *rs; PF_RULES_WASSERT(); rs = pf_find_keth_ruleset(anchor); if (rs == NULL) return (EINVAL); if (!rs->inactive.open || ticket != rs->inactive.ticket) return (0); /* Purge old inactive rules. */ TAILQ_FOREACH_SAFE(rule, rs->inactive.rules, entries, tmp) { TAILQ_REMOVE(rs->inactive.rules, rule, entries); pf_free_eth_rule(rule); } rs->inactive.open = 0; pf_remove_if_empty_keth_ruleset(rs); return (0); } #define PF_SET_SKIP_STEPS(i) \ do { \ while (head[i] != cur) { \ head[i]->skip[i].ptr = cur; \ head[i] = TAILQ_NEXT(head[i], entries); \ } \ } while (0) static void pf_eth_calc_skip_steps(struct pf_keth_ruleq *rules) { struct pf_keth_rule *cur, *prev, *head[PFE_SKIP_COUNT]; int i; cur = TAILQ_FIRST(rules); prev = cur; for (i = 0; i < PFE_SKIP_COUNT; ++i) head[i] = cur; while (cur != NULL) { if (cur->kif != prev->kif || cur->ifnot != prev->ifnot) PF_SET_SKIP_STEPS(PFE_SKIP_IFP); if (cur->direction != prev->direction) PF_SET_SKIP_STEPS(PFE_SKIP_DIR); if (cur->proto != prev->proto) PF_SET_SKIP_STEPS(PFE_SKIP_PROTO); if (memcmp(&cur->src, &prev->src, sizeof(cur->src)) != 0) PF_SET_SKIP_STEPS(PFE_SKIP_SRC_ADDR); if (memcmp(&cur->dst, &prev->dst, sizeof(cur->dst)) != 0) PF_SET_SKIP_STEPS(PFE_SKIP_DST_ADDR); prev = cur; cur = TAILQ_NEXT(cur, entries); } for (i = 0; i < PFE_SKIP_COUNT; ++i) PF_SET_SKIP_STEPS(i); } static int pf_commit_eth(uint32_t ticket, const char *anchor) { struct pf_keth_ruleq *rules; struct pf_keth_ruleset *rs; rs = pf_find_keth_ruleset(anchor); if (rs == NULL) { return (EINVAL); } if (!rs->inactive.open || ticket != rs->inactive.ticket) return (EBUSY); PF_RULES_WASSERT(); pf_eth_calc_skip_steps(rs->inactive.rules); rules = rs->active.rules; ck_pr_store_ptr(&rs->active.rules, rs->inactive.rules); rs->inactive.rules = rules; rs->inactive.ticket = rs->active.ticket; /* Clean up inactive rules (i.e. previously active rules), only when * we're sure they're no longer used. */ NET_EPOCH_CALL(pf_rollback_eth_cb, &rs->epoch_ctx); return (0); } #ifdef ALTQ static uint16_t pf_qname2qid(const char *qname) { return (tagname2tag(&V_pf_qids, qname)); } static void pf_qid_unref(uint16_t qid) { tag_unref(&V_pf_qids, qid); } static int pf_begin_altq(u_int32_t *ticket) { struct pf_altq *altq, *tmp; int error = 0; PF_RULES_WASSERT(); /* Purge the old altq lists */ TAILQ_FOREACH_SAFE(altq, V_pf_altq_ifs_inactive, entries, tmp) { if ((altq->local_flags & PFALTQ_FLAG_IF_REMOVED) == 0) { /* detach and destroy the discipline */ error = altq_remove(altq); } free(altq, M_PFALTQ); } TAILQ_INIT(V_pf_altq_ifs_inactive); TAILQ_FOREACH_SAFE(altq, V_pf_altqs_inactive, entries, tmp) { pf_qid_unref(altq->qid); free(altq, M_PFALTQ); } TAILQ_INIT(V_pf_altqs_inactive); if (error) return (error); *ticket = ++V_ticket_altqs_inactive; V_altqs_inactive_open = 1; return (0); } static int pf_rollback_altq(u_int32_t ticket) { struct pf_altq *altq, *tmp; int error = 0; PF_RULES_WASSERT(); if (!V_altqs_inactive_open || ticket != V_ticket_altqs_inactive) return (0); /* Purge the old altq lists */ TAILQ_FOREACH_SAFE(altq, V_pf_altq_ifs_inactive, entries, tmp) { if ((altq->local_flags & PFALTQ_FLAG_IF_REMOVED) == 0) { /* detach and destroy the discipline */ error = altq_remove(altq); } free(altq, M_PFALTQ); } TAILQ_INIT(V_pf_altq_ifs_inactive); TAILQ_FOREACH_SAFE(altq, V_pf_altqs_inactive, entries, tmp) { pf_qid_unref(altq->qid); free(altq, M_PFALTQ); } TAILQ_INIT(V_pf_altqs_inactive); V_altqs_inactive_open = 0; return (error); } static int pf_commit_altq(u_int32_t ticket) { struct pf_altqqueue *old_altqs, *old_altq_ifs; struct pf_altq *altq, *tmp; int err, error = 0; PF_RULES_WASSERT(); if (!V_altqs_inactive_open || ticket != V_ticket_altqs_inactive) return (EBUSY); /* swap altqs, keep the old. */ old_altqs = V_pf_altqs_active; old_altq_ifs = V_pf_altq_ifs_active; V_pf_altqs_active = V_pf_altqs_inactive; V_pf_altq_ifs_active = V_pf_altq_ifs_inactive; V_pf_altqs_inactive = old_altqs; V_pf_altq_ifs_inactive = old_altq_ifs; V_ticket_altqs_active = V_ticket_altqs_inactive; /* Attach new disciplines */ TAILQ_FOREACH(altq, V_pf_altq_ifs_active, entries) { if ((altq->local_flags & PFALTQ_FLAG_IF_REMOVED) == 0) { /* attach the discipline */ error = altq_pfattach(altq); if (error == 0 && V_pf_altq_running) error = pf_enable_altq(altq); if (error != 0) return (error); } } /* Purge the old altq lists */ TAILQ_FOREACH_SAFE(altq, V_pf_altq_ifs_inactive, entries, tmp) { if ((altq->local_flags & PFALTQ_FLAG_IF_REMOVED) == 0) { /* detach and destroy the discipline */ if (V_pf_altq_running) error = pf_disable_altq(altq); err = altq_pfdetach(altq); if (err != 0 && error == 0) error = err; err = altq_remove(altq); if (err != 0 && error == 0) error = err; } free(altq, M_PFALTQ); } TAILQ_INIT(V_pf_altq_ifs_inactive); TAILQ_FOREACH_SAFE(altq, V_pf_altqs_inactive, entries, tmp) { pf_qid_unref(altq->qid); free(altq, M_PFALTQ); } TAILQ_INIT(V_pf_altqs_inactive); V_altqs_inactive_open = 0; return (error); } static int pf_enable_altq(struct pf_altq *altq) { struct ifnet *ifp; struct tb_profile tb; int error = 0; if ((ifp = ifunit(altq->ifname)) == NULL) return (EINVAL); if (ifp->if_snd.altq_type != ALTQT_NONE) error = altq_enable(&ifp->if_snd); /* set tokenbucket regulator */ if (error == 0 && ifp != NULL && ALTQ_IS_ENABLED(&ifp->if_snd)) { tb.rate = altq->ifbandwidth; tb.depth = altq->tbrsize; error = tbr_set(&ifp->if_snd, &tb); } return (error); } static int pf_disable_altq(struct pf_altq *altq) { struct ifnet *ifp; struct tb_profile tb; int error; if ((ifp = ifunit(altq->ifname)) == NULL) return (EINVAL); /* * when the discipline is no longer referenced, it was overridden * by a new one. if so, just return. */ if (altq->altq_disc != ifp->if_snd.altq_disc) return (0); error = altq_disable(&ifp->if_snd); if (error == 0) { /* clear tokenbucket regulator */ tb.rate = 0; error = tbr_set(&ifp->if_snd, &tb); } return (error); } static int pf_altq_ifnet_event_add(struct ifnet *ifp, int remove, u_int32_t ticket, struct pf_altq *altq) { struct ifnet *ifp1; int error = 0; /* Deactivate the interface in question */ altq->local_flags &= ~PFALTQ_FLAG_IF_REMOVED; if ((ifp1 = ifunit(altq->ifname)) == NULL || (remove && ifp1 == ifp)) { altq->local_flags |= PFALTQ_FLAG_IF_REMOVED; } else { error = altq_add(ifp1, altq); if (ticket != V_ticket_altqs_inactive) error = EBUSY; if (error) free(altq, M_PFALTQ); } return (error); } void pf_altq_ifnet_event(struct ifnet *ifp, int remove) { struct pf_altq *a1, *a2, *a3; u_int32_t ticket; int error = 0; /* * No need to re-evaluate the configuration for events on interfaces * that do not support ALTQ, as it's not possible for such * interfaces to be part of the configuration. */ if (!ALTQ_IS_READY(&ifp->if_snd)) return; /* Interrupt userland queue modifications */ if (V_altqs_inactive_open) pf_rollback_altq(V_ticket_altqs_inactive); /* Start new altq ruleset */ if (pf_begin_altq(&ticket)) return; /* Copy the current active set */ TAILQ_FOREACH(a1, V_pf_altq_ifs_active, entries) { a2 = malloc(sizeof(*a2), M_PFALTQ, M_NOWAIT); if (a2 == NULL) { error = ENOMEM; break; } bcopy(a1, a2, sizeof(struct pf_altq)); error = pf_altq_ifnet_event_add(ifp, remove, ticket, a2); if (error) break; TAILQ_INSERT_TAIL(V_pf_altq_ifs_inactive, a2, entries); } if (error) goto out; TAILQ_FOREACH(a1, V_pf_altqs_active, entries) { a2 = malloc(sizeof(*a2), M_PFALTQ, M_NOWAIT); if (a2 == NULL) { error = ENOMEM; break; } bcopy(a1, a2, sizeof(struct pf_altq)); if ((a2->qid = pf_qname2qid(a2->qname)) == 0) { error = EBUSY; free(a2, M_PFALTQ); break; } a2->altq_disc = NULL; TAILQ_FOREACH(a3, V_pf_altq_ifs_inactive, entries) { if (strncmp(a3->ifname, a2->ifname, IFNAMSIZ) == 0) { a2->altq_disc = a3->altq_disc; break; } } error = pf_altq_ifnet_event_add(ifp, remove, ticket, a2); if (error) break; TAILQ_INSERT_TAIL(V_pf_altqs_inactive, a2, entries); } out: if (error != 0) pf_rollback_altq(ticket); else pf_commit_altq(ticket); } #endif /* ALTQ */ static int pf_begin_rules(u_int32_t *ticket, int rs_num, const char *anchor) { struct pf_krule_global *tree; struct pf_kruleset *rs; struct pf_krule *rule; PF_RULES_WASSERT(); if (rs_num < 0 || rs_num >= PF_RULESET_MAX) return (EINVAL); tree = malloc(sizeof(struct pf_krule_global), M_TEMP, M_NOWAIT); if (tree == NULL) return (ENOMEM); RB_INIT(tree); rs = pf_find_or_create_kruleset(anchor); if (rs == NULL) { free(tree, M_TEMP); return (EINVAL); } free(rs->rules[rs_num].inactive.tree, M_TEMP); rs->rules[rs_num].inactive.tree = tree; while ((rule = TAILQ_FIRST(rs->rules[rs_num].inactive.ptr)) != NULL) { pf_unlink_rule(rs->rules[rs_num].inactive.ptr, rule); rs->rules[rs_num].inactive.rcount--; } *ticket = ++rs->rules[rs_num].inactive.ticket; rs->rules[rs_num].inactive.open = 1; return (0); } static int pf_rollback_rules(u_int32_t ticket, int rs_num, char *anchor) { struct pf_kruleset *rs; struct pf_krule *rule; PF_RULES_WASSERT(); if (rs_num < 0 || rs_num >= PF_RULESET_MAX) return (EINVAL); rs = pf_find_kruleset(anchor); if (rs == NULL || !rs->rules[rs_num].inactive.open || rs->rules[rs_num].inactive.ticket != ticket) return (0); while ((rule = TAILQ_FIRST(rs->rules[rs_num].inactive.ptr)) != NULL) { pf_unlink_rule(rs->rules[rs_num].inactive.ptr, rule); rs->rules[rs_num].inactive.rcount--; } rs->rules[rs_num].inactive.open = 0; return (0); } #define PF_MD5_UPD(st, elm) \ MD5Update(ctx, (u_int8_t *) &(st)->elm, sizeof((st)->elm)) #define PF_MD5_UPD_STR(st, elm) \ MD5Update(ctx, (u_int8_t *) (st)->elm, strlen((st)->elm)) #define PF_MD5_UPD_HTONL(st, elm, stor) do { \ (stor) = htonl((st)->elm); \ MD5Update(ctx, (u_int8_t *) &(stor), sizeof(u_int32_t));\ } while (0) #define PF_MD5_UPD_HTONS(st, elm, stor) do { \ (stor) = htons((st)->elm); \ MD5Update(ctx, (u_int8_t *) &(stor), sizeof(u_int16_t));\ } while (0) static void pf_hash_rule_addr(MD5_CTX *ctx, struct pf_rule_addr *pfr) { PF_MD5_UPD(pfr, addr.type); switch (pfr->addr.type) { case PF_ADDR_DYNIFTL: PF_MD5_UPD(pfr, addr.v.ifname); PF_MD5_UPD(pfr, addr.iflags); break; case PF_ADDR_TABLE: PF_MD5_UPD(pfr, addr.v.tblname); break; case PF_ADDR_ADDRMASK: /* XXX ignore af? */ PF_MD5_UPD(pfr, addr.v.a.addr.addr32); PF_MD5_UPD(pfr, addr.v.a.mask.addr32); break; } PF_MD5_UPD(pfr, port[0]); PF_MD5_UPD(pfr, port[1]); PF_MD5_UPD(pfr, neg); PF_MD5_UPD(pfr, port_op); } static void pf_hash_rule_rolling(MD5_CTX *ctx, struct pf_krule *rule) { u_int16_t x; u_int32_t y; pf_hash_rule_addr(ctx, &rule->src); pf_hash_rule_addr(ctx, &rule->dst); for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) PF_MD5_UPD_STR(rule, label[i]); PF_MD5_UPD_STR(rule, ifname); PF_MD5_UPD_STR(rule, match_tagname); PF_MD5_UPD_HTONS(rule, match_tag, x); /* dup? */ PF_MD5_UPD_HTONL(rule, os_fingerprint, y); PF_MD5_UPD_HTONL(rule, prob, y); PF_MD5_UPD_HTONL(rule, uid.uid[0], y); PF_MD5_UPD_HTONL(rule, uid.uid[1], y); PF_MD5_UPD(rule, uid.op); PF_MD5_UPD_HTONL(rule, gid.gid[0], y); PF_MD5_UPD_HTONL(rule, gid.gid[1], y); PF_MD5_UPD(rule, gid.op); PF_MD5_UPD_HTONL(rule, rule_flag, y); PF_MD5_UPD(rule, action); PF_MD5_UPD(rule, direction); PF_MD5_UPD(rule, af); PF_MD5_UPD(rule, quick); PF_MD5_UPD(rule, ifnot); PF_MD5_UPD(rule, match_tag_not); PF_MD5_UPD(rule, natpass); PF_MD5_UPD(rule, keep_state); PF_MD5_UPD(rule, proto); PF_MD5_UPD(rule, type); PF_MD5_UPD(rule, code); PF_MD5_UPD(rule, flags); PF_MD5_UPD(rule, flagset); PF_MD5_UPD(rule, allow_opts); PF_MD5_UPD(rule, rt); PF_MD5_UPD(rule, tos); if (rule->anchor != NULL) PF_MD5_UPD_STR(rule, anchor->path); } static void pf_hash_rule(struct pf_krule *rule) { MD5_CTX ctx; MD5Init(&ctx); pf_hash_rule_rolling(&ctx, rule); MD5Final(rule->md5sum, &ctx); } static int pf_krule_compare(struct pf_krule *a, struct pf_krule *b) { return (memcmp(a->md5sum, b->md5sum, PF_MD5_DIGEST_LENGTH)); } static int pf_commit_rules(u_int32_t ticket, int rs_num, char *anchor) { struct pf_kruleset *rs; struct pf_krule *rule, **old_array, *old_rule; struct pf_krulequeue *old_rules; struct pf_krule_global *old_tree; int error; u_int32_t old_rcount; PF_RULES_WASSERT(); if (rs_num < 0 || rs_num >= PF_RULESET_MAX) return (EINVAL); rs = pf_find_kruleset(anchor); if (rs == NULL || !rs->rules[rs_num].inactive.open || ticket != rs->rules[rs_num].inactive.ticket) return (EBUSY); /* Calculate checksum for the main ruleset */ if (rs == &pf_main_ruleset) { error = pf_setup_pfsync_matching(rs); if (error != 0) return (error); } /* Swap rules, keep the old. */ old_rules = rs->rules[rs_num].active.ptr; old_rcount = rs->rules[rs_num].active.rcount; old_array = rs->rules[rs_num].active.ptr_array; old_tree = rs->rules[rs_num].active.tree; rs->rules[rs_num].active.ptr = rs->rules[rs_num].inactive.ptr; rs->rules[rs_num].active.ptr_array = rs->rules[rs_num].inactive.ptr_array; rs->rules[rs_num].active.tree = rs->rules[rs_num].inactive.tree; rs->rules[rs_num].active.rcount = rs->rules[rs_num].inactive.rcount; /* Attempt to preserve counter information. */ if (V_pf_status.keep_counters && old_tree != NULL) { TAILQ_FOREACH(rule, rs->rules[rs_num].active.ptr, entries) { old_rule = RB_FIND(pf_krule_global, old_tree, rule); if (old_rule == NULL) { continue; } pf_counter_u64_critical_enter(); pf_counter_u64_add_protected(&rule->evaluations, pf_counter_u64_fetch(&old_rule->evaluations)); pf_counter_u64_add_protected(&rule->packets[0], pf_counter_u64_fetch(&old_rule->packets[0])); pf_counter_u64_add_protected(&rule->packets[1], pf_counter_u64_fetch(&old_rule->packets[1])); pf_counter_u64_add_protected(&rule->bytes[0], pf_counter_u64_fetch(&old_rule->bytes[0])); pf_counter_u64_add_protected(&rule->bytes[1], pf_counter_u64_fetch(&old_rule->bytes[1])); pf_counter_u64_critical_exit(); } } rs->rules[rs_num].inactive.ptr = old_rules; rs->rules[rs_num].inactive.ptr_array = old_array; rs->rules[rs_num].inactive.tree = NULL; /* important for pf_ioctl_addrule */ rs->rules[rs_num].inactive.rcount = old_rcount; rs->rules[rs_num].active.ticket = rs->rules[rs_num].inactive.ticket; pf_calc_skip_steps(rs->rules[rs_num].active.ptr); /* Purge the old rule list. */ PF_UNLNKDRULES_LOCK(); while ((rule = TAILQ_FIRST(old_rules)) != NULL) pf_unlink_rule_locked(old_rules, rule); PF_UNLNKDRULES_UNLOCK(); if (rs->rules[rs_num].inactive.ptr_array) free(rs->rules[rs_num].inactive.ptr_array, M_TEMP); rs->rules[rs_num].inactive.ptr_array = NULL; rs->rules[rs_num].inactive.rcount = 0; rs->rules[rs_num].inactive.open = 0; pf_remove_if_empty_kruleset(rs); free(old_tree, M_TEMP); return (0); } static int pf_setup_pfsync_matching(struct pf_kruleset *rs) { MD5_CTX ctx; struct pf_krule *rule; int rs_cnt; u_int8_t digest[PF_MD5_DIGEST_LENGTH]; MD5Init(&ctx); for (rs_cnt = 0; rs_cnt < PF_RULESET_MAX; rs_cnt++) { /* XXX PF_RULESET_SCRUB as well? */ if (rs_cnt == PF_RULESET_SCRUB) continue; if (rs->rules[rs_cnt].inactive.ptr_array) free(rs->rules[rs_cnt].inactive.ptr_array, M_TEMP); rs->rules[rs_cnt].inactive.ptr_array = NULL; if (rs->rules[rs_cnt].inactive.rcount) { rs->rules[rs_cnt].inactive.ptr_array = malloc(sizeof(caddr_t) * rs->rules[rs_cnt].inactive.rcount, M_TEMP, M_NOWAIT); if (!rs->rules[rs_cnt].inactive.ptr_array) return (ENOMEM); } TAILQ_FOREACH(rule, rs->rules[rs_cnt].inactive.ptr, entries) { pf_hash_rule_rolling(&ctx, rule); (rs->rules[rs_cnt].inactive.ptr_array)[rule->nr] = rule; } } MD5Final(digest, &ctx); memcpy(V_pf_status.pf_chksum, digest, sizeof(V_pf_status.pf_chksum)); return (0); } static int pf_addr_setup(struct pf_kruleset *ruleset, struct pf_addr_wrap *addr, sa_family_t af) { int error = 0; switch (addr->type) { case PF_ADDR_TABLE: addr->p.tbl = pfr_attach_table(ruleset, addr->v.tblname); if (addr->p.tbl == NULL) error = ENOMEM; break; case PF_ADDR_DYNIFTL: error = pfi_dynaddr_setup(addr, af); break; } return (error); } static void pf_addr_copyout(struct pf_addr_wrap *addr) { switch (addr->type) { case PF_ADDR_DYNIFTL: pfi_dynaddr_copyout(addr); break; case PF_ADDR_TABLE: pf_tbladdr_copyout(addr); break; } } static void pf_src_node_copy(const struct pf_ksrc_node *in, struct pf_src_node *out) { int secs = time_uptime, diff; bzero(out, sizeof(struct pf_src_node)); bcopy(&in->addr, &out->addr, sizeof(struct pf_addr)); bcopy(&in->raddr, &out->raddr, sizeof(struct pf_addr)); if (in->rule.ptr != NULL) out->rule.nr = in->rule.ptr->nr; for (int i = 0; i < 2; i++) { out->bytes[i] = counter_u64_fetch(in->bytes[i]); out->packets[i] = counter_u64_fetch(in->packets[i]); } out->states = in->states; out->conn = in->conn; out->af = in->af; out->ruletype = in->ruletype; out->creation = secs - in->creation; if (out->expire > secs) out->expire -= secs; else out->expire = 0; /* Adjust the connection rate estimate. */ diff = secs - in->conn_rate.last; if (diff >= in->conn_rate.seconds) out->conn_rate.count = 0; else out->conn_rate.count -= in->conn_rate.count * diff / in->conn_rate.seconds; } #ifdef ALTQ /* * Handle export of struct pf_kaltq to user binaries that may be using any * version of struct pf_altq. */ static int pf_export_kaltq(struct pf_altq *q, struct pfioc_altq_v1 *pa, size_t ioc_size) { u_int32_t version; if (ioc_size == sizeof(struct pfioc_altq_v0)) version = 0; else version = pa->version; if (version > PFIOC_ALTQ_VERSION) return (EINVAL); #define ASSIGN(x) exported_q->x = q->x #define COPY(x) \ bcopy(&q->x, &exported_q->x, min(sizeof(q->x), sizeof(exported_q->x))) #define SATU16(x) (u_int32_t)uqmin((x), USHRT_MAX) #define SATU32(x) (u_int32_t)uqmin((x), UINT_MAX) switch (version) { case 0: { struct pf_altq_v0 *exported_q = &((struct pfioc_altq_v0 *)pa)->altq; COPY(ifname); ASSIGN(scheduler); ASSIGN(tbrsize); exported_q->tbrsize = SATU16(q->tbrsize); exported_q->ifbandwidth = SATU32(q->ifbandwidth); COPY(qname); COPY(parent); ASSIGN(parent_qid); exported_q->bandwidth = SATU32(q->bandwidth); ASSIGN(priority); ASSIGN(local_flags); ASSIGN(qlimit); ASSIGN(flags); if (q->scheduler == ALTQT_HFSC) { #define ASSIGN_OPT(x) exported_q->pq_u.hfsc_opts.x = q->pq_u.hfsc_opts.x #define ASSIGN_OPT_SATU32(x) exported_q->pq_u.hfsc_opts.x = \ SATU32(q->pq_u.hfsc_opts.x) ASSIGN_OPT_SATU32(rtsc_m1); ASSIGN_OPT(rtsc_d); ASSIGN_OPT_SATU32(rtsc_m2); ASSIGN_OPT_SATU32(lssc_m1); ASSIGN_OPT(lssc_d); ASSIGN_OPT_SATU32(lssc_m2); ASSIGN_OPT_SATU32(ulsc_m1); ASSIGN_OPT(ulsc_d); ASSIGN_OPT_SATU32(ulsc_m2); ASSIGN_OPT(flags); #undef ASSIGN_OPT #undef ASSIGN_OPT_SATU32 } else COPY(pq_u); ASSIGN(qid); break; } case 1: { struct pf_altq_v1 *exported_q = &((struct pfioc_altq_v1 *)pa)->altq; COPY(ifname); ASSIGN(scheduler); ASSIGN(tbrsize); ASSIGN(ifbandwidth); COPY(qname); COPY(parent); ASSIGN(parent_qid); ASSIGN(bandwidth); ASSIGN(priority); ASSIGN(local_flags); ASSIGN(qlimit); ASSIGN(flags); COPY(pq_u); ASSIGN(qid); break; } default: panic("%s: unhandled struct pfioc_altq version", __func__); break; } #undef ASSIGN #undef COPY #undef SATU16 #undef SATU32 return (0); } /* * Handle import to struct pf_kaltq of struct pf_altq from user binaries * that may be using any version of it. */ static int pf_import_kaltq(struct pfioc_altq_v1 *pa, struct pf_altq *q, size_t ioc_size) { u_int32_t version; if (ioc_size == sizeof(struct pfioc_altq_v0)) version = 0; else version = pa->version; if (version > PFIOC_ALTQ_VERSION) return (EINVAL); #define ASSIGN(x) q->x = imported_q->x #define COPY(x) \ bcopy(&imported_q->x, &q->x, min(sizeof(imported_q->x), sizeof(q->x))) switch (version) { case 0: { struct pf_altq_v0 *imported_q = &((struct pfioc_altq_v0 *)pa)->altq; COPY(ifname); ASSIGN(scheduler); ASSIGN(tbrsize); /* 16-bit -> 32-bit */ ASSIGN(ifbandwidth); /* 32-bit -> 64-bit */ COPY(qname); COPY(parent); ASSIGN(parent_qid); ASSIGN(bandwidth); /* 32-bit -> 64-bit */ ASSIGN(priority); ASSIGN(local_flags); ASSIGN(qlimit); ASSIGN(flags); if (imported_q->scheduler == ALTQT_HFSC) { #define ASSIGN_OPT(x) q->pq_u.hfsc_opts.x = imported_q->pq_u.hfsc_opts.x /* * The m1 and m2 parameters are being copied from * 32-bit to 64-bit. */ ASSIGN_OPT(rtsc_m1); ASSIGN_OPT(rtsc_d); ASSIGN_OPT(rtsc_m2); ASSIGN_OPT(lssc_m1); ASSIGN_OPT(lssc_d); ASSIGN_OPT(lssc_m2); ASSIGN_OPT(ulsc_m1); ASSIGN_OPT(ulsc_d); ASSIGN_OPT(ulsc_m2); ASSIGN_OPT(flags); #undef ASSIGN_OPT } else COPY(pq_u); ASSIGN(qid); break; } case 1: { struct pf_altq_v1 *imported_q = &((struct pfioc_altq_v1 *)pa)->altq; COPY(ifname); ASSIGN(scheduler); ASSIGN(tbrsize); ASSIGN(ifbandwidth); COPY(qname); COPY(parent); ASSIGN(parent_qid); ASSIGN(bandwidth); ASSIGN(priority); ASSIGN(local_flags); ASSIGN(qlimit); ASSIGN(flags); COPY(pq_u); ASSIGN(qid); break; } default: panic("%s: unhandled struct pfioc_altq version", __func__); break; } #undef ASSIGN #undef COPY return (0); } static struct pf_altq * pf_altq_get_nth_active(u_int32_t n) { struct pf_altq *altq; u_int32_t nr; nr = 0; TAILQ_FOREACH(altq, V_pf_altq_ifs_active, entries) { if (nr == n) return (altq); nr++; } TAILQ_FOREACH(altq, V_pf_altqs_active, entries) { if (nr == n) return (altq); nr++; } return (NULL); } #endif /* ALTQ */ struct pf_krule * pf_krule_alloc(void) { struct pf_krule *rule; rule = malloc(sizeof(struct pf_krule), M_PFRULE, M_WAITOK | M_ZERO); mtx_init(&rule->rpool.mtx, "pf_krule_pool", NULL, MTX_DEF); return (rule); } void pf_krule_free(struct pf_krule *rule) { #ifdef PF_WANT_32_TO_64_COUNTER bool wowned; #endif if (rule == NULL) return; #ifdef PF_WANT_32_TO_64_COUNTER if (rule->allrulelinked) { wowned = PF_RULES_WOWNED(); if (!wowned) PF_RULES_WLOCK(); LIST_REMOVE(rule, allrulelist); V_pf_allrulecount--; if (!wowned) PF_RULES_WUNLOCK(); } #endif pf_counter_u64_deinit(&rule->evaluations); for (int i = 0; i < 2; i++) { pf_counter_u64_deinit(&rule->packets[i]); pf_counter_u64_deinit(&rule->bytes[i]); } counter_u64_free(rule->states_cur); counter_u64_free(rule->states_tot); counter_u64_free(rule->src_nodes); mtx_destroy(&rule->rpool.mtx); free(rule, M_PFRULE); } static void pf_kpooladdr_to_pooladdr(const struct pf_kpooladdr *kpool, struct pf_pooladdr *pool) { bzero(pool, sizeof(*pool)); bcopy(&kpool->addr, &pool->addr, sizeof(pool->addr)); strlcpy(pool->ifname, kpool->ifname, sizeof(pool->ifname)); } static int pf_pooladdr_to_kpooladdr(const struct pf_pooladdr *pool, struct pf_kpooladdr *kpool) { int ret; bzero(kpool, sizeof(*kpool)); bcopy(&pool->addr, &kpool->addr, sizeof(kpool->addr)); ret = pf_user_strcpy(kpool->ifname, pool->ifname, sizeof(kpool->ifname)); return (ret); } static void pf_kpool_to_pool(const struct pf_kpool *kpool, struct pf_pool *pool) { bzero(pool, sizeof(*pool)); bcopy(&kpool->key, &pool->key, sizeof(pool->key)); bcopy(&kpool->counter, &pool->counter, sizeof(pool->counter)); pool->tblidx = kpool->tblidx; pool->proxy_port[0] = kpool->proxy_port[0]; pool->proxy_port[1] = kpool->proxy_port[1]; pool->opts = kpool->opts; } static void pf_pool_to_kpool(const struct pf_pool *pool, struct pf_kpool *kpool) { _Static_assert(sizeof(pool->key) == sizeof(kpool->key), ""); _Static_assert(sizeof(pool->counter) == sizeof(kpool->counter), ""); bcopy(&pool->key, &kpool->key, sizeof(kpool->key)); bcopy(&pool->counter, &kpool->counter, sizeof(kpool->counter)); kpool->tblidx = pool->tblidx; kpool->proxy_port[0] = pool->proxy_port[0]; kpool->proxy_port[1] = pool->proxy_port[1]; kpool->opts = pool->opts; } static void pf_krule_to_rule(const struct pf_krule *krule, struct pf_rule *rule) { bzero(rule, sizeof(*rule)); bcopy(&krule->src, &rule->src, sizeof(rule->src)); bcopy(&krule->dst, &rule->dst, sizeof(rule->dst)); for (int i = 0; i < PF_SKIP_COUNT; ++i) { if (rule->skip[i].ptr == NULL) rule->skip[i].nr = -1; else rule->skip[i].nr = krule->skip[i].ptr->nr; } strlcpy(rule->label, krule->label[0], sizeof(rule->label)); strlcpy(rule->ifname, krule->ifname, sizeof(rule->ifname)); strlcpy(rule->qname, krule->qname, sizeof(rule->qname)); strlcpy(rule->pqname, krule->pqname, sizeof(rule->pqname)); strlcpy(rule->tagname, krule->tagname, sizeof(rule->tagname)); strlcpy(rule->match_tagname, krule->match_tagname, sizeof(rule->match_tagname)); strlcpy(rule->overload_tblname, krule->overload_tblname, sizeof(rule->overload_tblname)); pf_kpool_to_pool(&krule->rpool, &rule->rpool); rule->evaluations = pf_counter_u64_fetch(&krule->evaluations); for (int i = 0; i < 2; i++) { rule->packets[i] = pf_counter_u64_fetch(&krule->packets[i]); rule->bytes[i] = pf_counter_u64_fetch(&krule->bytes[i]); } /* kif, anchor, overload_tbl are not copied over. */ rule->os_fingerprint = krule->os_fingerprint; rule->rtableid = krule->rtableid; bcopy(krule->timeout, rule->timeout, sizeof(krule->timeout)); rule->max_states = krule->max_states; rule->max_src_nodes = krule->max_src_nodes; rule->max_src_states = krule->max_src_states; rule->max_src_conn = krule->max_src_conn; rule->max_src_conn_rate.limit = krule->max_src_conn_rate.limit; rule->max_src_conn_rate.seconds = krule->max_src_conn_rate.seconds; rule->qid = krule->qid; rule->pqid = krule->pqid; rule->nr = krule->nr; rule->prob = krule->prob; rule->cuid = krule->cuid; rule->cpid = krule->cpid; rule->return_icmp = krule->return_icmp; rule->return_icmp6 = krule->return_icmp6; rule->max_mss = krule->max_mss; rule->tag = krule->tag; rule->match_tag = krule->match_tag; rule->scrub_flags = krule->scrub_flags; bcopy(&krule->uid, &rule->uid, sizeof(krule->uid)); bcopy(&krule->gid, &rule->gid, sizeof(krule->gid)); rule->rule_flag = krule->rule_flag; rule->action = krule->action; rule->direction = krule->direction; rule->log = krule->log; rule->logif = krule->logif; rule->quick = krule->quick; rule->ifnot = krule->ifnot; rule->match_tag_not = krule->match_tag_not; rule->natpass = krule->natpass; rule->keep_state = krule->keep_state; rule->af = krule->af; rule->proto = krule->proto; rule->type = krule->type; rule->code = krule->code; rule->flags = krule->flags; rule->flagset = krule->flagset; rule->min_ttl = krule->min_ttl; rule->allow_opts = krule->allow_opts; rule->rt = krule->rt; rule->return_ttl = krule->return_ttl; rule->tos = krule->tos; rule->set_tos = krule->set_tos; rule->anchor_relative = krule->anchor_relative; rule->anchor_wildcard = krule->anchor_wildcard; rule->flush = krule->flush; rule->prio = krule->prio; rule->set_prio[0] = krule->set_prio[0]; rule->set_prio[1] = krule->set_prio[1]; bcopy(&krule->divert, &rule->divert, sizeof(krule->divert)); rule->u_states_cur = counter_u64_fetch(krule->states_cur); rule->u_states_tot = counter_u64_fetch(krule->states_tot); rule->u_src_nodes = counter_u64_fetch(krule->src_nodes); } static int pf_rule_to_krule(const struct pf_rule *rule, struct pf_krule *krule) { int ret; #ifndef INET if (rule->af == AF_INET) { return (EAFNOSUPPORT); } #endif /* INET */ #ifndef INET6 if (rule->af == AF_INET6) { return (EAFNOSUPPORT); } #endif /* INET6 */ ret = pf_check_rule_addr(&rule->src); if (ret != 0) return (ret); ret = pf_check_rule_addr(&rule->dst); if (ret != 0) return (ret); bcopy(&rule->src, &krule->src, sizeof(rule->src)); bcopy(&rule->dst, &krule->dst, sizeof(rule->dst)); ret = pf_user_strcpy(krule->label[0], rule->label, sizeof(rule->label)); if (ret != 0) return (ret); ret = pf_user_strcpy(krule->ifname, rule->ifname, sizeof(rule->ifname)); if (ret != 0) return (ret); ret = pf_user_strcpy(krule->qname, rule->qname, sizeof(rule->qname)); if (ret != 0) return (ret); ret = pf_user_strcpy(krule->pqname, rule->pqname, sizeof(rule->pqname)); if (ret != 0) return (ret); ret = pf_user_strcpy(krule->tagname, rule->tagname, sizeof(rule->tagname)); if (ret != 0) return (ret); ret = pf_user_strcpy(krule->match_tagname, rule->match_tagname, sizeof(rule->match_tagname)); if (ret != 0) return (ret); ret = pf_user_strcpy(krule->overload_tblname, rule->overload_tblname, sizeof(rule->overload_tblname)); if (ret != 0) return (ret); pf_pool_to_kpool(&rule->rpool, &krule->rpool); /* Don't allow userspace to set evaulations, packets or bytes. */ /* kif, anchor, overload_tbl are not copied over. */ krule->os_fingerprint = rule->os_fingerprint; krule->rtableid = rule->rtableid; bcopy(rule->timeout, krule->timeout, sizeof(krule->timeout)); krule->max_states = rule->max_states; krule->max_src_nodes = rule->max_src_nodes; krule->max_src_states = rule->max_src_states; krule->max_src_conn = rule->max_src_conn; krule->max_src_conn_rate.limit = rule->max_src_conn_rate.limit; krule->max_src_conn_rate.seconds = rule->max_src_conn_rate.seconds; krule->qid = rule->qid; krule->pqid = rule->pqid; krule->nr = rule->nr; krule->prob = rule->prob; krule->cuid = rule->cuid; krule->cpid = rule->cpid; krule->return_icmp = rule->return_icmp; krule->return_icmp6 = rule->return_icmp6; krule->max_mss = rule->max_mss; krule->tag = rule->tag; krule->match_tag = rule->match_tag; krule->scrub_flags = rule->scrub_flags; bcopy(&rule->uid, &krule->uid, sizeof(krule->uid)); bcopy(&rule->gid, &krule->gid, sizeof(krule->gid)); krule->rule_flag = rule->rule_flag; krule->action = rule->action; krule->direction = rule->direction; krule->log = rule->log; krule->logif = rule->logif; krule->quick = rule->quick; krule->ifnot = rule->ifnot; krule->match_tag_not = rule->match_tag_not; krule->natpass = rule->natpass; krule->keep_state = rule->keep_state; krule->af = rule->af; krule->proto = rule->proto; krule->type = rule->type; krule->code = rule->code; krule->flags = rule->flags; krule->flagset = rule->flagset; krule->min_ttl = rule->min_ttl; krule->allow_opts = rule->allow_opts; krule->rt = rule->rt; krule->return_ttl = rule->return_ttl; krule->tos = rule->tos; krule->set_tos = rule->set_tos; krule->flush = rule->flush; krule->prio = rule->prio; krule->set_prio[0] = rule->set_prio[0]; krule->set_prio[1] = rule->set_prio[1]; bcopy(&rule->divert, &krule->divert, sizeof(krule->divert)); return (0); } static int pf_state_kill_to_kstate_kill(const struct pfioc_state_kill *psk, struct pf_kstate_kill *kill) { int ret; bzero(kill, sizeof(*kill)); bcopy(&psk->psk_pfcmp, &kill->psk_pfcmp, sizeof(kill->psk_pfcmp)); kill->psk_af = psk->psk_af; kill->psk_proto = psk->psk_proto; bcopy(&psk->psk_src, &kill->psk_src, sizeof(kill->psk_src)); bcopy(&psk->psk_dst, &kill->psk_dst, sizeof(kill->psk_dst)); ret = pf_user_strcpy(kill->psk_ifname, psk->psk_ifname, sizeof(kill->psk_ifname)); if (ret != 0) return (ret); ret = pf_user_strcpy(kill->psk_label, psk->psk_label, sizeof(kill->psk_label)); if (ret != 0) return (ret); return (0); } static int pf_ioctl_addrule(struct pf_krule *rule, uint32_t ticket, uint32_t pool_ticket, const char *anchor, const char *anchor_call, struct thread *td) { struct pf_kruleset *ruleset; struct pf_krule *tail; struct pf_kpooladdr *pa; struct pfi_kkif *kif = NULL; int rs_num; int error = 0; if ((rule->return_icmp >> 8) > ICMP_MAXTYPE) { error = EINVAL; goto errout_unlocked; } #define ERROUT(x) ERROUT_FUNCTION(errout, x) if (rule->ifname[0]) kif = pf_kkif_create(M_WAITOK); pf_counter_u64_init(&rule->evaluations, M_WAITOK); for (int i = 0; i < 2; i++) { pf_counter_u64_init(&rule->packets[i], M_WAITOK); pf_counter_u64_init(&rule->bytes[i], M_WAITOK); } rule->states_cur = counter_u64_alloc(M_WAITOK); rule->states_tot = counter_u64_alloc(M_WAITOK); rule->src_nodes = counter_u64_alloc(M_WAITOK); rule->cuid = td->td_ucred->cr_ruid; rule->cpid = td->td_proc ? td->td_proc->p_pid : 0; TAILQ_INIT(&rule->rpool.list); PF_CONFIG_LOCK(); PF_RULES_WLOCK(); #ifdef PF_WANT_32_TO_64_COUNTER LIST_INSERT_HEAD(&V_pf_allrulelist, rule, allrulelist); MPASS(!rule->allrulelinked); rule->allrulelinked = true; V_pf_allrulecount++; #endif ruleset = pf_find_kruleset(anchor); if (ruleset == NULL) ERROUT(EINVAL); rs_num = pf_get_ruleset_number(rule->action); if (rs_num >= PF_RULESET_MAX) ERROUT(EINVAL); if (ticket != ruleset->rules[rs_num].inactive.ticket) { DPFPRINTF(PF_DEBUG_MISC, ("ticket: %d != [%d]%d\n", ticket, rs_num, ruleset->rules[rs_num].inactive.ticket)); ERROUT(EBUSY); } if (pool_ticket != V_ticket_pabuf) { DPFPRINTF(PF_DEBUG_MISC, ("pool_ticket: %d != %d\n", pool_ticket, V_ticket_pabuf)); ERROUT(EBUSY); } /* * XXXMJG hack: there is no mechanism to ensure they started the * transaction. Ticket checked above may happen to match by accident, * even if nobody called DIOCXBEGIN, let alone this process. * Partially work around it by checking if the RB tree got allocated, * see pf_begin_rules. */ if (ruleset->rules[rs_num].inactive.tree == NULL) { ERROUT(EINVAL); } tail = TAILQ_LAST(ruleset->rules[rs_num].inactive.ptr, pf_krulequeue); if (tail) rule->nr = tail->nr + 1; else rule->nr = 0; if (rule->ifname[0]) { rule->kif = pfi_kkif_attach(kif, rule->ifname); kif = NULL; pfi_kkif_ref(rule->kif); } else rule->kif = NULL; if (rule->rtableid > 0 && rule->rtableid >= rt_numfibs) error = EBUSY; #ifdef ALTQ /* set queue IDs */ if (rule->qname[0] != 0) { if ((rule->qid = pf_qname2qid(rule->qname)) == 0) error = EBUSY; else if (rule->pqname[0] != 0) { if ((rule->pqid = pf_qname2qid(rule->pqname)) == 0) error = EBUSY; } else rule->pqid = rule->qid; } #endif if (rule->tagname[0]) if ((rule->tag = pf_tagname2tag(rule->tagname)) == 0) error = EBUSY; if (rule->match_tagname[0]) if ((rule->match_tag = pf_tagname2tag(rule->match_tagname)) == 0) error = EBUSY; if (rule->rt && !rule->direction) error = EINVAL; if (!rule->log) rule->logif = 0; if (rule->logif >= PFLOGIFS_MAX) error = EINVAL; if (pf_addr_setup(ruleset, &rule->src.addr, rule->af)) error = ENOMEM; if (pf_addr_setup(ruleset, &rule->dst.addr, rule->af)) error = ENOMEM; if (pf_kanchor_setup(rule, ruleset, anchor_call)) error = EINVAL; if (rule->scrub_flags & PFSTATE_SETPRIO && (rule->set_prio[0] > PF_PRIO_MAX || rule->set_prio[1] > PF_PRIO_MAX)) error = EINVAL; TAILQ_FOREACH(pa, &V_pf_pabuf, entries) if (pa->addr.type == PF_ADDR_TABLE) { pa->addr.p.tbl = pfr_attach_table(ruleset, pa->addr.v.tblname); if (pa->addr.p.tbl == NULL) error = ENOMEM; } rule->overload_tbl = NULL; if (rule->overload_tblname[0]) { if ((rule->overload_tbl = pfr_attach_table(ruleset, rule->overload_tblname)) == NULL) error = EINVAL; else rule->overload_tbl->pfrkt_flags |= PFR_TFLAG_ACTIVE; } pf_mv_kpool(&V_pf_pabuf, &rule->rpool.list); if (((((rule->action == PF_NAT) || (rule->action == PF_RDR) || (rule->action == PF_BINAT)) && rule->anchor == NULL) || (rule->rt > PF_NOPFROUTE)) && (TAILQ_FIRST(&rule->rpool.list) == NULL)) error = EINVAL; if (error) { pf_free_rule(rule); rule = NULL; ERROUT(error); } rule->rpool.cur = TAILQ_FIRST(&rule->rpool.list); TAILQ_INSERT_TAIL(ruleset->rules[rs_num].inactive.ptr, rule, entries); ruleset->rules[rs_num].inactive.rcount++; PF_RULES_WUNLOCK(); pf_hash_rule(rule); if (RB_INSERT(pf_krule_global, ruleset->rules[rs_num].inactive.tree, rule) != NULL) { PF_RULES_WLOCK(); + TAILQ_REMOVE(ruleset->rules[rs_num].inactive.ptr, rule, entries); + ruleset->rules[rs_num].inactive.rcount--; pf_free_rule(rule); rule = NULL; - error = EINVAL; - ERROUT(error); + ERROUT(EEXIST); } PF_CONFIG_UNLOCK(); return (0); #undef ERROUT errout: PF_RULES_WUNLOCK(); PF_CONFIG_UNLOCK(); errout_unlocked: pf_kkif_free(kif); pf_krule_free(rule); return (error); } static bool pf_label_match(const struct pf_krule *rule, const char *label) { int i = 0; while (*rule->label[i]) { if (strcmp(rule->label[i], label) == 0) return (true); i++; } return (false); } static unsigned int pf_kill_matching_state(struct pf_state_key_cmp *key, int dir) { struct pf_kstate *s; int more = 0; s = pf_find_state_all(key, dir, &more); if (s == NULL) return (0); if (more) { PF_STATE_UNLOCK(s); return (0); } pf_unlink_state(s); return (1); } static int pf_killstates_row(struct pf_kstate_kill *psk, struct pf_idhash *ih) { struct pf_kstate *s; struct pf_state_key *sk; struct pf_addr *srcaddr, *dstaddr; struct pf_state_key_cmp match_key; int idx, killed = 0; unsigned int dir; u_int16_t srcport, dstport; struct pfi_kkif *kif; relock_DIOCKILLSTATES: PF_HASHROW_LOCK(ih); LIST_FOREACH(s, &ih->states, entry) { /* For floating states look at the original kif. */ kif = s->kif == V_pfi_all ? s->orig_kif : s->kif; sk = s->key[PF_SK_WIRE]; if (s->direction == PF_OUT) { srcaddr = &sk->addr[1]; dstaddr = &sk->addr[0]; srcport = sk->port[1]; dstport = sk->port[0]; } else { srcaddr = &sk->addr[0]; dstaddr = &sk->addr[1]; srcport = sk->port[0]; dstport = sk->port[1]; } if (psk->psk_af && sk->af != psk->psk_af) continue; if (psk->psk_proto && psk->psk_proto != sk->proto) continue; if (! PF_MATCHA(psk->psk_src.neg, &psk->psk_src.addr.v.a.addr, &psk->psk_src.addr.v.a.mask, srcaddr, sk->af)) continue; if (! PF_MATCHA(psk->psk_dst.neg, &psk->psk_dst.addr.v.a.addr, &psk->psk_dst.addr.v.a.mask, dstaddr, sk->af)) continue; if (! PF_MATCHA(psk->psk_rt_addr.neg, &psk->psk_rt_addr.addr.v.a.addr, &psk->psk_rt_addr.addr.v.a.mask, &s->rt_addr, sk->af)) continue; if (psk->psk_src.port_op != 0 && ! pf_match_port(psk->psk_src.port_op, psk->psk_src.port[0], psk->psk_src.port[1], srcport)) continue; if (psk->psk_dst.port_op != 0 && ! pf_match_port(psk->psk_dst.port_op, psk->psk_dst.port[0], psk->psk_dst.port[1], dstport)) continue; if (psk->psk_label[0] && ! pf_label_match(s->rule.ptr, psk->psk_label)) continue; if (psk->psk_ifname[0] && strcmp(psk->psk_ifname, kif->pfik_name)) continue; if (psk->psk_kill_match) { /* Create the key to find matching states, with lock * held. */ bzero(&match_key, sizeof(match_key)); if (s->direction == PF_OUT) { dir = PF_IN; idx = PF_SK_STACK; } else { dir = PF_OUT; idx = PF_SK_WIRE; } match_key.af = s->key[idx]->af; match_key.proto = s->key[idx]->proto; PF_ACPY(&match_key.addr[0], &s->key[idx]->addr[1], match_key.af); match_key.port[0] = s->key[idx]->port[1]; PF_ACPY(&match_key.addr[1], &s->key[idx]->addr[0], match_key.af); match_key.port[1] = s->key[idx]->port[0]; } pf_unlink_state(s); killed++; if (psk->psk_kill_match) killed += pf_kill_matching_state(&match_key, dir); goto relock_DIOCKILLSTATES; } PF_HASHROW_UNLOCK(ih); return (killed); } static int pfioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flags, struct thread *td) { int error = 0; PF_RULES_RLOCK_TRACKER; #define ERROUT_IOCTL(target, x) \ do { \ error = (x); \ SDT_PROBE3(pf, ioctl, ioctl, error, cmd, error, __LINE__); \ goto target; \ } while (0) /* XXX keep in sync with switch() below */ if (securelevel_gt(td->td_ucred, 2)) switch (cmd) { case DIOCGETRULES: case DIOCGETRULE: case DIOCGETRULENV: case DIOCGETADDRS: case DIOCGETADDR: case DIOCGETSTATE: case DIOCGETSTATENV: case DIOCSETSTATUSIF: case DIOCGETSTATUS: case DIOCGETSTATUSNV: case DIOCCLRSTATUS: case DIOCNATLOOK: case DIOCSETDEBUG: case DIOCGETSTATES: case DIOCGETSTATESV2: case DIOCGETTIMEOUT: case DIOCCLRRULECTRS: case DIOCGETLIMIT: case DIOCGETALTQSV0: case DIOCGETALTQSV1: case DIOCGETALTQV0: case DIOCGETALTQV1: case DIOCGETQSTATSV0: case DIOCGETQSTATSV1: case DIOCGETRULESETS: case DIOCGETRULESET: case DIOCRGETTABLES: case DIOCRGETTSTATS: case DIOCRCLRTSTATS: case DIOCRCLRADDRS: case DIOCRADDADDRS: case DIOCRDELADDRS: case DIOCRSETADDRS: case DIOCRGETADDRS: case DIOCRGETASTATS: case DIOCRCLRASTATS: case DIOCRTSTADDRS: case DIOCOSFPGET: case DIOCGETSRCNODES: case DIOCCLRSRCNODES: case DIOCGETSYNCOOKIES: case DIOCIGETIFACES: case DIOCGIFSPEEDV0: case DIOCGIFSPEEDV1: case DIOCSETIFFLAG: case DIOCCLRIFFLAG: case DIOCGETETHRULES: case DIOCGETETHRULE: case DIOCGETETHRULESETS: case DIOCGETETHRULESET: break; case DIOCRCLRTABLES: case DIOCRADDTABLES: case DIOCRDELTABLES: case DIOCRSETTFLAGS: if (((struct pfioc_table *)addr)->pfrio_flags & PFR_FLAG_DUMMY) break; /* dummy operation ok */ return (EPERM); default: return (EPERM); } if (!(flags & FWRITE)) switch (cmd) { case DIOCGETRULES: case DIOCGETADDRS: case DIOCGETADDR: case DIOCGETSTATE: case DIOCGETSTATENV: case DIOCGETSTATUS: case DIOCGETSTATUSNV: case DIOCGETSTATES: case DIOCGETSTATESV2: case DIOCGETTIMEOUT: case DIOCGETLIMIT: case DIOCGETALTQSV0: case DIOCGETALTQSV1: case DIOCGETALTQV0: case DIOCGETALTQV1: case DIOCGETQSTATSV0: case DIOCGETQSTATSV1: case DIOCGETRULESETS: case DIOCGETRULESET: case DIOCNATLOOK: case DIOCRGETTABLES: case DIOCRGETTSTATS: case DIOCRGETADDRS: case DIOCRGETASTATS: case DIOCRTSTADDRS: case DIOCOSFPGET: case DIOCGETSRCNODES: case DIOCGETSYNCOOKIES: case DIOCIGETIFACES: case DIOCGIFSPEEDV1: case DIOCGIFSPEEDV0: case DIOCGETRULENV: case DIOCGETETHRULES: case DIOCGETETHRULE: case DIOCGETETHRULESETS: case DIOCGETETHRULESET: break; case DIOCRCLRTABLES: case DIOCRADDTABLES: case DIOCRDELTABLES: case DIOCRCLRTSTATS: case DIOCRCLRADDRS: case DIOCRADDADDRS: case DIOCRDELADDRS: case DIOCRSETADDRS: case DIOCRSETTFLAGS: if (((struct pfioc_table *)addr)->pfrio_flags & PFR_FLAG_DUMMY) { flags |= FWRITE; /* need write lock for dummy */ break; /* dummy operation ok */ } return (EACCES); case DIOCGETRULE: if (((struct pfioc_rule *)addr)->action == PF_GET_CLR_CNTR) return (EACCES); break; default: return (EACCES); } CURVNET_SET(TD_TO_VNET(td)); switch (cmd) { case DIOCSTART: sx_xlock(&pf_ioctl_lock); if (V_pf_status.running) error = EEXIST; else { int cpu; hook_pf(); if (! TAILQ_EMPTY(V_pf_keth->active.rules)) hook_pf_eth(); V_pf_status.running = 1; V_pf_status.since = time_second; CPU_FOREACH(cpu) V_pf_stateid[cpu] = time_second; DPFPRINTF(PF_DEBUG_MISC, ("pf: started\n")); } break; case DIOCSTOP: sx_xlock(&pf_ioctl_lock); if (!V_pf_status.running) error = ENOENT; else { V_pf_status.running = 0; dehook_pf(); dehook_pf_eth(); V_pf_status.since = time_second; DPFPRINTF(PF_DEBUG_MISC, ("pf: stopped\n")); } break; case DIOCGETETHRULES: { struct pfioc_nv *nv = (struct pfioc_nv *)addr; nvlist_t *nvl; void *packed; struct pf_keth_rule *tail; struct pf_keth_ruleset *rs; u_int32_t ticket, nr; const char *anchor = ""; nvl = NULL; packed = NULL; #define ERROUT(x) do { error = (x); goto DIOCGETETHRULES_error; } while (0) if (nv->len > pf_ioctl_maxcount) ERROUT(ENOMEM); /* Copy the request in */ packed = malloc(nv->len, M_NVLIST, M_WAITOK); if (packed == NULL) ERROUT(ENOMEM); error = copyin(nv->data, packed, nv->len); if (error) ERROUT(error); nvl = nvlist_unpack(packed, nv->len, 0); if (nvl == NULL) ERROUT(EBADMSG); if (! nvlist_exists_string(nvl, "anchor")) ERROUT(EBADMSG); anchor = nvlist_get_string(nvl, "anchor"); rs = pf_find_keth_ruleset(anchor); nvlist_destroy(nvl); nvl = NULL; free(packed, M_NVLIST); packed = NULL; if (rs == NULL) ERROUT(ENOENT); /* Reply */ nvl = nvlist_create(0); if (nvl == NULL) ERROUT(ENOMEM); PF_RULES_RLOCK(); ticket = rs->active.ticket; tail = TAILQ_LAST(rs->active.rules, pf_keth_ruleq); if (tail) nr = tail->nr + 1; else nr = 0; PF_RULES_RUNLOCK(); nvlist_add_number(nvl, "ticket", ticket); nvlist_add_number(nvl, "nr", nr); packed = nvlist_pack(nvl, &nv->len); if (packed == NULL) ERROUT(ENOMEM); if (nv->size == 0) ERROUT(0); else if (nv->size < nv->len) ERROUT(ENOSPC); error = copyout(packed, nv->data, nv->len); #undef ERROUT DIOCGETETHRULES_error: free(packed, M_NVLIST); nvlist_destroy(nvl); break; } case DIOCGETETHRULE: { struct epoch_tracker et; struct pfioc_nv *nv = (struct pfioc_nv *)addr; nvlist_t *nvl = NULL; void *nvlpacked = NULL; struct pf_keth_rule *rule = NULL; struct pf_keth_ruleset *rs; u_int32_t ticket, nr; bool clear = false; const char *anchor; #define ERROUT(x) do { error = (x); goto DIOCGETETHRULE_error; } while (0) if (nv->len > pf_ioctl_maxcount) ERROUT(ENOMEM); nvlpacked = malloc(nv->len, M_TEMP, M_WAITOK); if (nvlpacked == NULL) ERROUT(ENOMEM); error = copyin(nv->data, nvlpacked, nv->len); if (error) ERROUT(error); nvl = nvlist_unpack(nvlpacked, nv->len, 0); if (nvl == NULL) ERROUT(EBADMSG); if (! nvlist_exists_number(nvl, "ticket")) ERROUT(EBADMSG); ticket = nvlist_get_number(nvl, "ticket"); if (! nvlist_exists_string(nvl, "anchor")) ERROUT(EBADMSG); anchor = nvlist_get_string(nvl, "anchor"); if (nvlist_exists_bool(nvl, "clear")) clear = nvlist_get_bool(nvl, "clear"); if (clear && !(flags & FWRITE)) ERROUT(EACCES); if (! nvlist_exists_number(nvl, "nr")) ERROUT(EBADMSG); nr = nvlist_get_number(nvl, "nr"); PF_RULES_RLOCK(); rs = pf_find_keth_ruleset(anchor); if (rs == NULL) { PF_RULES_RUNLOCK(); ERROUT(ENOENT); } if (ticket != rs->active.ticket) { PF_RULES_RUNLOCK(); ERROUT(EBUSY); } nvlist_destroy(nvl); nvl = NULL; free(nvlpacked, M_TEMP); nvlpacked = NULL; nvl = nvlist_create(0); rule = TAILQ_FIRST(rs->active.rules); while ((rule != NULL) && (rule->nr != nr)) rule = TAILQ_NEXT(rule, entries); if (rule == NULL) { PF_RULES_RUNLOCK(); ERROUT(ENOENT); } /* Make sure rule can't go away. */ NET_EPOCH_ENTER(et); PF_RULES_RUNLOCK(); nvl = pf_keth_rule_to_nveth_rule(rule); if (pf_keth_anchor_nvcopyout(rs, rule, nvl)) ERROUT(EBUSY); NET_EPOCH_EXIT(et); if (nvl == NULL) ERROUT(ENOMEM); nvlpacked = nvlist_pack(nvl, &nv->len); if (nvlpacked == NULL) ERROUT(ENOMEM); if (nv->size == 0) ERROUT(0); else if (nv->size < nv->len) ERROUT(ENOSPC); error = copyout(nvlpacked, nv->data, nv->len); if (error == 0 && clear) { counter_u64_zero(rule->evaluations); for (int i = 0; i < 2; i++) { counter_u64_zero(rule->packets[i]); counter_u64_zero(rule->bytes[i]); } } #undef ERROUT DIOCGETETHRULE_error: free(nvlpacked, M_TEMP); nvlist_destroy(nvl); break; } case DIOCADDETHRULE: { struct pfioc_nv *nv = (struct pfioc_nv *)addr; nvlist_t *nvl = NULL; void *nvlpacked = NULL; struct pf_keth_rule *rule = NULL, *tail = NULL; struct pf_keth_ruleset *ruleset = NULL; struct pfi_kkif *kif = NULL; const char *anchor = "", *anchor_call = ""; #define ERROUT(x) do { error = (x); goto DIOCADDETHRULE_error; } while (0) nvlpacked = malloc(nv->len, M_TEMP, M_WAITOK); if (nvlpacked == NULL) ERROUT(ENOMEM); error = copyin(nv->data, nvlpacked, nv->len); if (error) ERROUT(error); nvl = nvlist_unpack(nvlpacked, nv->len, 0); if (nvl == NULL) ERROUT(EBADMSG); if (! nvlist_exists_number(nvl, "ticket")) ERROUT(EBADMSG); if (nvlist_exists_string(nvl, "anchor")) anchor = nvlist_get_string(nvl, "anchor"); if (nvlist_exists_string(nvl, "anchor_call")) anchor_call = nvlist_get_string(nvl, "anchor_call"); ruleset = pf_find_keth_ruleset(anchor); if (ruleset == NULL) ERROUT(EINVAL); if (nvlist_get_number(nvl, "ticket") != ruleset->inactive.ticket) { DPFPRINTF(PF_DEBUG_MISC, ("ticket: %d != %d\n", (u_int32_t)nvlist_get_number(nvl, "ticket"), ruleset->inactive.ticket)); ERROUT(EBUSY); } rule = malloc(sizeof(*rule), M_PFRULE, M_WAITOK); if (rule == NULL) ERROUT(ENOMEM); error = pf_nveth_rule_to_keth_rule(nvl, rule); if (error != 0) ERROUT(error); if (rule->ifname[0]) kif = pf_kkif_create(M_WAITOK); rule->evaluations = counter_u64_alloc(M_WAITOK); for (int i = 0; i < 2; i++) { rule->packets[i] = counter_u64_alloc(M_WAITOK); rule->bytes[i] = counter_u64_alloc(M_WAITOK); } PF_RULES_WLOCK(); if (rule->ifname[0]) { rule->kif = pfi_kkif_attach(kif, rule->ifname); pfi_kkif_ref(rule->kif); } else rule->kif = NULL; #ifdef ALTQ /* set queue IDs */ if (rule->qname[0] != 0) { if ((rule->qid = pf_qname2qid(rule->qname)) == 0) error = EBUSY; else rule->qid = rule->qid; } #endif if (rule->tagname[0]) if ((rule->tag = pf_tagname2tag(rule->tagname)) == 0) error = EBUSY; if (error) { pf_free_eth_rule(rule); PF_RULES_WUNLOCK(); ERROUT(error); } if (pf_keth_anchor_setup(rule, ruleset, anchor_call)) { pf_free_eth_rule(rule); PF_RULES_WUNLOCK(); ERROUT(EINVAL); } tail = TAILQ_LAST(ruleset->inactive.rules, pf_keth_ruleq); if (tail) rule->nr = tail->nr + 1; else rule->nr = 0; TAILQ_INSERT_TAIL(ruleset->inactive.rules, rule, entries); PF_RULES_WUNLOCK(); #undef ERROUT DIOCADDETHRULE_error: nvlist_destroy(nvl); free(nvlpacked, M_TEMP); break; } case DIOCGETETHRULESETS: { struct epoch_tracker et; struct pfioc_nv *nv = (struct pfioc_nv *)addr; nvlist_t *nvl = NULL; void *nvlpacked = NULL; struct pf_keth_ruleset *ruleset; struct pf_keth_anchor *anchor; int nr = 0; #define ERROUT(x) do { error = (x); goto DIOCGETETHRULESETS_error; } while (0) if (nv->len > pf_ioctl_maxcount) ERROUT(ENOMEM); nvlpacked = malloc(nv->len, M_NVLIST, M_WAITOK); if (nvlpacked == NULL) ERROUT(ENOMEM); error = copyin(nv->data, nvlpacked, nv->len); if (error) ERROUT(error); nvl = nvlist_unpack(nvlpacked, nv->len, 0); if (nvl == NULL) ERROUT(EBADMSG); if (! nvlist_exists_string(nvl, "path")) ERROUT(EBADMSG); NET_EPOCH_ENTER(et); if ((ruleset = pf_find_keth_ruleset( nvlist_get_string(nvl, "path"))) == NULL) { NET_EPOCH_EXIT(et); ERROUT(ENOENT); } if (ruleset->anchor == NULL) { RB_FOREACH(anchor, pf_keth_anchor_global, &V_pf_keth_anchors) if (anchor->parent == NULL) nr++; } else { RB_FOREACH(anchor, pf_keth_anchor_node, &ruleset->anchor->children) nr++; } NET_EPOCH_EXIT(et); nvlist_destroy(nvl); nvl = NULL; free(nvlpacked, M_NVLIST); nvlpacked = NULL; nvl = nvlist_create(0); if (nvl == NULL) ERROUT(ENOMEM); nvlist_add_number(nvl, "nr", nr); nvlpacked = nvlist_pack(nvl, &nv->len); if (nvlpacked == NULL) ERROUT(ENOMEM); if (nv->size == 0) ERROUT(0); else if (nv->size < nv->len) ERROUT(ENOSPC); error = copyout(nvlpacked, nv->data, nv->len); #undef ERROUT DIOCGETETHRULESETS_error: free(nvlpacked, M_NVLIST); nvlist_destroy(nvl); break; } case DIOCGETETHRULESET: { struct epoch_tracker et; struct pfioc_nv *nv = (struct pfioc_nv *)addr; nvlist_t *nvl = NULL; void *nvlpacked = NULL; struct pf_keth_ruleset *ruleset; struct pf_keth_anchor *anchor; int nr = 0, req_nr = 0; bool found = false; #define ERROUT(x) do { error = (x); goto DIOCGETETHRULESET_error; } while (0) if (nv->len > pf_ioctl_maxcount) ERROUT(ENOMEM); nvlpacked = malloc(nv->len, M_NVLIST, M_WAITOK); if (nvlpacked == NULL) ERROUT(ENOMEM); error = copyin(nv->data, nvlpacked, nv->len); if (error) ERROUT(error); nvl = nvlist_unpack(nvlpacked, nv->len, 0); if (nvl == NULL) ERROUT(EBADMSG); if (! nvlist_exists_string(nvl, "path")) ERROUT(EBADMSG); if (! nvlist_exists_number(nvl, "nr")) ERROUT(EBADMSG); req_nr = nvlist_get_number(nvl, "nr"); NET_EPOCH_ENTER(et); if ((ruleset = pf_find_keth_ruleset( nvlist_get_string(nvl, "path"))) == NULL) { NET_EPOCH_EXIT(et); ERROUT(ENOENT); } nvlist_destroy(nvl); nvl = NULL; free(nvlpacked, M_NVLIST); nvlpacked = NULL; nvl = nvlist_create(0); if (nvl == NULL) { NET_EPOCH_EXIT(et); ERROUT(ENOMEM); } if (ruleset->anchor == NULL) { RB_FOREACH(anchor, pf_keth_anchor_global, &V_pf_keth_anchors) { if (anchor->parent == NULL && nr++ == req_nr) { found = true; break; } } } else { RB_FOREACH(anchor, pf_keth_anchor_node, &ruleset->anchor->children) { if (nr++ == req_nr) { found = true; break; } } } NET_EPOCH_EXIT(et); if (found) { nvlist_add_number(nvl, "nr", nr); nvlist_add_string(nvl, "name", anchor->name); if (ruleset->anchor) nvlist_add_string(nvl, "path", ruleset->anchor->path); else nvlist_add_string(nvl, "path", ""); } else { ERROUT(EBUSY); } nvlpacked = nvlist_pack(nvl, &nv->len); if (nvlpacked == NULL) ERROUT(ENOMEM); if (nv->size == 0) ERROUT(0); else if (nv->size < nv->len) ERROUT(ENOSPC); error = copyout(nvlpacked, nv->data, nv->len); #undef ERROUT DIOCGETETHRULESET_error: free(nvlpacked, M_NVLIST); nvlist_destroy(nvl); break; } case DIOCADDRULENV: { struct pfioc_nv *nv = (struct pfioc_nv *)addr; nvlist_t *nvl = NULL; void *nvlpacked = NULL; struct pf_krule *rule = NULL; const char *anchor = "", *anchor_call = ""; uint32_t ticket = 0, pool_ticket = 0; #define ERROUT(x) ERROUT_IOCTL(DIOCADDRULENV_error, x) if (nv->len > pf_ioctl_maxcount) ERROUT(ENOMEM); nvlpacked = malloc(nv->len, M_TEMP, M_WAITOK); error = copyin(nv->data, nvlpacked, nv->len); if (error) ERROUT(error); nvl = nvlist_unpack(nvlpacked, nv->len, 0); if (nvl == NULL) ERROUT(EBADMSG); if (! nvlist_exists_number(nvl, "ticket")) ERROUT(EINVAL); ticket = nvlist_get_number(nvl, "ticket"); if (! nvlist_exists_number(nvl, "pool_ticket")) ERROUT(EINVAL); pool_ticket = nvlist_get_number(nvl, "pool_ticket"); if (! nvlist_exists_nvlist(nvl, "rule")) ERROUT(EINVAL); rule = pf_krule_alloc(); error = pf_nvrule_to_krule(nvlist_get_nvlist(nvl, "rule"), rule); if (error) ERROUT(error); if (nvlist_exists_string(nvl, "anchor")) anchor = nvlist_get_string(nvl, "anchor"); if (nvlist_exists_string(nvl, "anchor_call")) anchor_call = nvlist_get_string(nvl, "anchor_call"); if ((error = nvlist_error(nvl))) ERROUT(error); /* Frees rule on error */ error = pf_ioctl_addrule(rule, ticket, pool_ticket, anchor, anchor_call, td); nvlist_destroy(nvl); free(nvlpacked, M_TEMP); break; #undef ERROUT DIOCADDRULENV_error: pf_krule_free(rule); nvlist_destroy(nvl); free(nvlpacked, M_TEMP); break; } case DIOCADDRULE: { struct pfioc_rule *pr = (struct pfioc_rule *)addr; struct pf_krule *rule; rule = pf_krule_alloc(); error = pf_rule_to_krule(&pr->rule, rule); if (error != 0) { pf_krule_free(rule); break; } pr->anchor[sizeof(pr->anchor) - 1] = 0; /* Frees rule on error */ error = pf_ioctl_addrule(rule, pr->ticket, pr->pool_ticket, pr->anchor, pr->anchor_call, td); break; } case DIOCGETRULES: { struct pfioc_rule *pr = (struct pfioc_rule *)addr; struct pf_kruleset *ruleset; struct pf_krule *tail; int rs_num; pr->anchor[sizeof(pr->anchor) - 1] = 0; PF_RULES_WLOCK(); ruleset = pf_find_kruleset(pr->anchor); if (ruleset == NULL) { PF_RULES_WUNLOCK(); error = EINVAL; break; } rs_num = pf_get_ruleset_number(pr->rule.action); if (rs_num >= PF_RULESET_MAX) { PF_RULES_WUNLOCK(); error = EINVAL; break; } tail = TAILQ_LAST(ruleset->rules[rs_num].active.ptr, pf_krulequeue); if (tail) pr->nr = tail->nr + 1; else pr->nr = 0; pr->ticket = ruleset->rules[rs_num].active.ticket; PF_RULES_WUNLOCK(); break; } case DIOCGETRULE: { struct pfioc_rule *pr = (struct pfioc_rule *)addr; struct pf_kruleset *ruleset; struct pf_krule *rule; int rs_num; pr->anchor[sizeof(pr->anchor) - 1] = 0; PF_RULES_WLOCK(); ruleset = pf_find_kruleset(pr->anchor); if (ruleset == NULL) { PF_RULES_WUNLOCK(); error = EINVAL; break; } rs_num = pf_get_ruleset_number(pr->rule.action); if (rs_num >= PF_RULESET_MAX) { PF_RULES_WUNLOCK(); error = EINVAL; break; } if (pr->ticket != ruleset->rules[rs_num].active.ticket) { PF_RULES_WUNLOCK(); error = EBUSY; break; } rule = TAILQ_FIRST(ruleset->rules[rs_num].active.ptr); while ((rule != NULL) && (rule->nr != pr->nr)) rule = TAILQ_NEXT(rule, entries); if (rule == NULL) { PF_RULES_WUNLOCK(); error = EBUSY; break; } pf_krule_to_rule(rule, &pr->rule); if (pf_kanchor_copyout(ruleset, rule, pr)) { PF_RULES_WUNLOCK(); error = EBUSY; break; } pf_addr_copyout(&pr->rule.src.addr); pf_addr_copyout(&pr->rule.dst.addr); if (pr->action == PF_GET_CLR_CNTR) { pf_counter_u64_zero(&rule->evaluations); for (int i = 0; i < 2; i++) { pf_counter_u64_zero(&rule->packets[i]); pf_counter_u64_zero(&rule->bytes[i]); } counter_u64_zero(rule->states_tot); } PF_RULES_WUNLOCK(); break; } case DIOCGETRULENV: { struct pfioc_nv *nv = (struct pfioc_nv *)addr; nvlist_t *nvrule = NULL; nvlist_t *nvl = NULL; struct pf_kruleset *ruleset; struct pf_krule *rule; void *nvlpacked = NULL; int rs_num, nr; bool clear_counter = false; #define ERROUT(x) ERROUT_IOCTL(DIOCGETRULENV_error, x) if (nv->len > pf_ioctl_maxcount) ERROUT(ENOMEM); /* Copy the request in */ nvlpacked = malloc(nv->len, M_NVLIST, M_WAITOK); if (nvlpacked == NULL) ERROUT(ENOMEM); error = copyin(nv->data, nvlpacked, nv->len); if (error) ERROUT(error); nvl = nvlist_unpack(nvlpacked, nv->len, 0); if (nvl == NULL) ERROUT(EBADMSG); if (! nvlist_exists_string(nvl, "anchor")) ERROUT(EBADMSG); if (! nvlist_exists_number(nvl, "ruleset")) ERROUT(EBADMSG); if (! nvlist_exists_number(nvl, "ticket")) ERROUT(EBADMSG); if (! nvlist_exists_number(nvl, "nr")) ERROUT(EBADMSG); if (nvlist_exists_bool(nvl, "clear_counter")) clear_counter = nvlist_get_bool(nvl, "clear_counter"); if (clear_counter && !(flags & FWRITE)) ERROUT(EACCES); nr = nvlist_get_number(nvl, "nr"); PF_RULES_WLOCK(); ruleset = pf_find_kruleset(nvlist_get_string(nvl, "anchor")); if (ruleset == NULL) { PF_RULES_WUNLOCK(); ERROUT(ENOENT); } rs_num = pf_get_ruleset_number(nvlist_get_number(nvl, "ruleset")); if (rs_num >= PF_RULESET_MAX) { PF_RULES_WUNLOCK(); ERROUT(EINVAL); } if (nvlist_get_number(nvl, "ticket") != ruleset->rules[rs_num].active.ticket) { PF_RULES_WUNLOCK(); ERROUT(EBUSY); } if ((error = nvlist_error(nvl))) { PF_RULES_WUNLOCK(); ERROUT(error); } rule = TAILQ_FIRST(ruleset->rules[rs_num].active.ptr); while ((rule != NULL) && (rule->nr != nr)) rule = TAILQ_NEXT(rule, entries); if (rule == NULL) { PF_RULES_WUNLOCK(); ERROUT(EBUSY); } nvrule = pf_krule_to_nvrule(rule); nvlist_destroy(nvl); nvl = nvlist_create(0); if (nvl == NULL) { PF_RULES_WUNLOCK(); ERROUT(ENOMEM); } nvlist_add_number(nvl, "nr", nr); nvlist_add_nvlist(nvl, "rule", nvrule); nvlist_destroy(nvrule); nvrule = NULL; if (pf_kanchor_nvcopyout(ruleset, rule, nvl)) { PF_RULES_WUNLOCK(); ERROUT(EBUSY); } free(nvlpacked, M_NVLIST); nvlpacked = nvlist_pack(nvl, &nv->len); if (nvlpacked == NULL) { PF_RULES_WUNLOCK(); ERROUT(ENOMEM); } if (nv->size == 0) { PF_RULES_WUNLOCK(); ERROUT(0); } else if (nv->size < nv->len) { PF_RULES_WUNLOCK(); ERROUT(ENOSPC); } if (clear_counter) { pf_counter_u64_zero(&rule->evaluations); for (int i = 0; i < 2; i++) { pf_counter_u64_zero(&rule->packets[i]); pf_counter_u64_zero(&rule->bytes[i]); } counter_u64_zero(rule->states_tot); } PF_RULES_WUNLOCK(); error = copyout(nvlpacked, nv->data, nv->len); #undef ERROUT DIOCGETRULENV_error: free(nvlpacked, M_NVLIST); nvlist_destroy(nvrule); nvlist_destroy(nvl); break; } case DIOCCHANGERULE: { struct pfioc_rule *pcr = (struct pfioc_rule *)addr; struct pf_kruleset *ruleset; struct pf_krule *oldrule = NULL, *newrule = NULL; struct pfi_kkif *kif = NULL; struct pf_kpooladdr *pa; u_int32_t nr = 0; int rs_num; pcr->anchor[sizeof(pcr->anchor) - 1] = 0; if (pcr->action < PF_CHANGE_ADD_HEAD || pcr->action > PF_CHANGE_GET_TICKET) { error = EINVAL; break; } if (pcr->rule.return_icmp >> 8 > ICMP_MAXTYPE) { error = EINVAL; break; } if (pcr->action != PF_CHANGE_REMOVE) { newrule = pf_krule_alloc(); error = pf_rule_to_krule(&pcr->rule, newrule); if (error != 0) { free(newrule, M_PFRULE); break; } if (newrule->ifname[0]) kif = pf_kkif_create(M_WAITOK); pf_counter_u64_init(&newrule->evaluations, M_WAITOK); for (int i = 0; i < 2; i++) { pf_counter_u64_init(&newrule->packets[i], M_WAITOK); pf_counter_u64_init(&newrule->bytes[i], M_WAITOK); } newrule->states_cur = counter_u64_alloc(M_WAITOK); newrule->states_tot = counter_u64_alloc(M_WAITOK); newrule->src_nodes = counter_u64_alloc(M_WAITOK); newrule->cuid = td->td_ucred->cr_ruid; newrule->cpid = td->td_proc ? td->td_proc->p_pid : 0; TAILQ_INIT(&newrule->rpool.list); } #define ERROUT(x) { error = (x); goto DIOCCHANGERULE_error; } PF_RULES_WLOCK(); #ifdef PF_WANT_32_TO_64_COUNTER if (newrule != NULL) { LIST_INSERT_HEAD(&V_pf_allrulelist, newrule, allrulelist); newrule->allrulelinked = true; V_pf_allrulecount++; } #endif if (!(pcr->action == PF_CHANGE_REMOVE || pcr->action == PF_CHANGE_GET_TICKET) && pcr->pool_ticket != V_ticket_pabuf) ERROUT(EBUSY); ruleset = pf_find_kruleset(pcr->anchor); if (ruleset == NULL) ERROUT(EINVAL); rs_num = pf_get_ruleset_number(pcr->rule.action); if (rs_num >= PF_RULESET_MAX) ERROUT(EINVAL); if (pcr->action == PF_CHANGE_GET_TICKET) { pcr->ticket = ++ruleset->rules[rs_num].active.ticket; ERROUT(0); } else if (pcr->ticket != ruleset->rules[rs_num].active.ticket) ERROUT(EINVAL); if (pcr->action != PF_CHANGE_REMOVE) { if (newrule->ifname[0]) { newrule->kif = pfi_kkif_attach(kif, newrule->ifname); kif = NULL; pfi_kkif_ref(newrule->kif); } else newrule->kif = NULL; if (newrule->rtableid > 0 && newrule->rtableid >= rt_numfibs) error = EBUSY; #ifdef ALTQ /* set queue IDs */ if (newrule->qname[0] != 0) { if ((newrule->qid = pf_qname2qid(newrule->qname)) == 0) error = EBUSY; else if (newrule->pqname[0] != 0) { if ((newrule->pqid = pf_qname2qid(newrule->pqname)) == 0) error = EBUSY; } else newrule->pqid = newrule->qid; } #endif /* ALTQ */ if (newrule->tagname[0]) if ((newrule->tag = pf_tagname2tag(newrule->tagname)) == 0) error = EBUSY; if (newrule->match_tagname[0]) if ((newrule->match_tag = pf_tagname2tag( newrule->match_tagname)) == 0) error = EBUSY; if (newrule->rt && !newrule->direction) error = EINVAL; if (!newrule->log) newrule->logif = 0; if (newrule->logif >= PFLOGIFS_MAX) error = EINVAL; if (pf_addr_setup(ruleset, &newrule->src.addr, newrule->af)) error = ENOMEM; if (pf_addr_setup(ruleset, &newrule->dst.addr, newrule->af)) error = ENOMEM; if (pf_kanchor_setup(newrule, ruleset, pcr->anchor_call)) error = EINVAL; TAILQ_FOREACH(pa, &V_pf_pabuf, entries) if (pa->addr.type == PF_ADDR_TABLE) { pa->addr.p.tbl = pfr_attach_table(ruleset, pa->addr.v.tblname); if (pa->addr.p.tbl == NULL) error = ENOMEM; } newrule->overload_tbl = NULL; if (newrule->overload_tblname[0]) { if ((newrule->overload_tbl = pfr_attach_table( ruleset, newrule->overload_tblname)) == NULL) error = EINVAL; else newrule->overload_tbl->pfrkt_flags |= PFR_TFLAG_ACTIVE; } pf_mv_kpool(&V_pf_pabuf, &newrule->rpool.list); if (((((newrule->action == PF_NAT) || (newrule->action == PF_RDR) || (newrule->action == PF_BINAT) || (newrule->rt > PF_NOPFROUTE)) && !newrule->anchor)) && (TAILQ_FIRST(&newrule->rpool.list) == NULL)) error = EINVAL; if (error) { pf_free_rule(newrule); PF_RULES_WUNLOCK(); break; } newrule->rpool.cur = TAILQ_FIRST(&newrule->rpool.list); } pf_empty_kpool(&V_pf_pabuf); if (pcr->action == PF_CHANGE_ADD_HEAD) oldrule = TAILQ_FIRST( ruleset->rules[rs_num].active.ptr); else if (pcr->action == PF_CHANGE_ADD_TAIL) oldrule = TAILQ_LAST( ruleset->rules[rs_num].active.ptr, pf_krulequeue); else { oldrule = TAILQ_FIRST( ruleset->rules[rs_num].active.ptr); while ((oldrule != NULL) && (oldrule->nr != pcr->nr)) oldrule = TAILQ_NEXT(oldrule, entries); if (oldrule == NULL) { if (newrule != NULL) pf_free_rule(newrule); PF_RULES_WUNLOCK(); error = EINVAL; break; } } if (pcr->action == PF_CHANGE_REMOVE) { pf_unlink_rule(ruleset->rules[rs_num].active.ptr, oldrule); ruleset->rules[rs_num].active.rcount--; } else { if (oldrule == NULL) TAILQ_INSERT_TAIL( ruleset->rules[rs_num].active.ptr, newrule, entries); else if (pcr->action == PF_CHANGE_ADD_HEAD || pcr->action == PF_CHANGE_ADD_BEFORE) TAILQ_INSERT_BEFORE(oldrule, newrule, entries); else TAILQ_INSERT_AFTER( ruleset->rules[rs_num].active.ptr, oldrule, newrule, entries); ruleset->rules[rs_num].active.rcount++; } nr = 0; TAILQ_FOREACH(oldrule, ruleset->rules[rs_num].active.ptr, entries) oldrule->nr = nr++; ruleset->rules[rs_num].active.ticket++; pf_calc_skip_steps(ruleset->rules[rs_num].active.ptr); pf_remove_if_empty_kruleset(ruleset); PF_RULES_WUNLOCK(); break; #undef ERROUT DIOCCHANGERULE_error: PF_RULES_WUNLOCK(); pf_krule_free(newrule); pf_kkif_free(kif); break; } case DIOCCLRSTATES: { struct pfioc_state_kill *psk = (struct pfioc_state_kill *)addr; struct pf_kstate_kill kill; error = pf_state_kill_to_kstate_kill(psk, &kill); if (error) break; psk->psk_killed = pf_clear_states(&kill); break; } case DIOCCLRSTATESNV: { error = pf_clearstates_nv((struct pfioc_nv *)addr); break; } case DIOCKILLSTATES: { struct pfioc_state_kill *psk = (struct pfioc_state_kill *)addr; struct pf_kstate_kill kill; error = pf_state_kill_to_kstate_kill(psk, &kill); if (error) break; psk->psk_killed = 0; pf_killstates(&kill, &psk->psk_killed); break; } case DIOCKILLSTATESNV: { error = pf_killstates_nv((struct pfioc_nv *)addr); break; } case DIOCADDSTATE: { struct pfioc_state *ps = (struct pfioc_state *)addr; struct pfsync_state *sp = &ps->state; if (sp->timeout >= PFTM_MAX) { error = EINVAL; break; } if (V_pfsync_state_import_ptr != NULL) { PF_RULES_RLOCK(); error = V_pfsync_state_import_ptr(sp, PFSYNC_SI_IOCTL); PF_RULES_RUNLOCK(); } else error = EOPNOTSUPP; break; } case DIOCGETSTATE: { struct pfioc_state *ps = (struct pfioc_state *)addr; struct pf_kstate *s; s = pf_find_state_byid(ps->state.id, ps->state.creatorid); if (s == NULL) { error = ENOENT; break; } pfsync_state_export(&ps->state, s); PF_STATE_UNLOCK(s); break; } case DIOCGETSTATENV: { error = pf_getstate((struct pfioc_nv *)addr); break; } case DIOCGETSTATES: { struct pfioc_states *ps = (struct pfioc_states *)addr; struct pf_kstate *s; struct pfsync_state *pstore, *p; int i, nr; size_t slice_count = 16, count; void *out; if (ps->ps_len <= 0) { nr = uma_zone_get_cur(V_pf_state_z); ps->ps_len = sizeof(struct pfsync_state) * nr; break; } out = ps->ps_states; pstore = mallocarray(slice_count, sizeof(struct pfsync_state), M_TEMP, M_WAITOK | M_ZERO); nr = 0; for (i = 0; i <= pf_hashmask; i++) { struct pf_idhash *ih = &V_pf_idhash[i]; DIOCGETSTATES_retry: p = pstore; if (LIST_EMPTY(&ih->states)) continue; PF_HASHROW_LOCK(ih); count = 0; LIST_FOREACH(s, &ih->states, entry) { if (s->timeout == PFTM_UNLINKED) continue; count++; } if (count > slice_count) { PF_HASHROW_UNLOCK(ih); free(pstore, M_TEMP); slice_count = count * 2; pstore = mallocarray(slice_count, sizeof(struct pfsync_state), M_TEMP, M_WAITOK | M_ZERO); goto DIOCGETSTATES_retry; } if ((nr+count) * sizeof(*p) > ps->ps_len) { PF_HASHROW_UNLOCK(ih); goto DIOCGETSTATES_full; } LIST_FOREACH(s, &ih->states, entry) { if (s->timeout == PFTM_UNLINKED) continue; pfsync_state_export(p, s); p++; nr++; } PF_HASHROW_UNLOCK(ih); error = copyout(pstore, out, sizeof(struct pfsync_state) * count); if (error) break; out = ps->ps_states + nr; } DIOCGETSTATES_full: ps->ps_len = sizeof(struct pfsync_state) * nr; free(pstore, M_TEMP); break; } case DIOCGETSTATESV2: { struct pfioc_states_v2 *ps = (struct pfioc_states_v2 *)addr; struct pf_kstate *s; struct pf_state_export *pstore, *p; int i, nr; size_t slice_count = 16, count; void *out; if (ps->ps_req_version > PF_STATE_VERSION) { error = ENOTSUP; break; } if (ps->ps_len <= 0) { nr = uma_zone_get_cur(V_pf_state_z); ps->ps_len = sizeof(struct pf_state_export) * nr; break; } out = ps->ps_states; pstore = mallocarray(slice_count, sizeof(struct pf_state_export), M_TEMP, M_WAITOK | M_ZERO); nr = 0; for (i = 0; i <= pf_hashmask; i++) { struct pf_idhash *ih = &V_pf_idhash[i]; DIOCGETSTATESV2_retry: p = pstore; if (LIST_EMPTY(&ih->states)) continue; PF_HASHROW_LOCK(ih); count = 0; LIST_FOREACH(s, &ih->states, entry) { if (s->timeout == PFTM_UNLINKED) continue; count++; } if (count > slice_count) { PF_HASHROW_UNLOCK(ih); free(pstore, M_TEMP); slice_count = count * 2; pstore = mallocarray(slice_count, sizeof(struct pf_state_export), M_TEMP, M_WAITOK | M_ZERO); goto DIOCGETSTATESV2_retry; } if ((nr+count) * sizeof(*p) > ps->ps_len) { PF_HASHROW_UNLOCK(ih); goto DIOCGETSTATESV2_full; } LIST_FOREACH(s, &ih->states, entry) { if (s->timeout == PFTM_UNLINKED) continue; pf_state_export(p, s); p++; nr++; } PF_HASHROW_UNLOCK(ih); error = copyout(pstore, out, sizeof(struct pf_state_export) * count); if (error) break; out = ps->ps_states + nr; } DIOCGETSTATESV2_full: ps->ps_len = nr * sizeof(struct pf_state_export); free(pstore, M_TEMP); break; } case DIOCGETSTATUS: { struct pf_status *s = (struct pf_status *)addr; PF_RULES_RLOCK(); s->running = V_pf_status.running; s->since = V_pf_status.since; s->debug = V_pf_status.debug; s->hostid = V_pf_status.hostid; s->states = V_pf_status.states; s->src_nodes = V_pf_status.src_nodes; for (int i = 0; i < PFRES_MAX; i++) s->counters[i] = counter_u64_fetch(V_pf_status.counters[i]); for (int i = 0; i < LCNT_MAX; i++) s->lcounters[i] = counter_u64_fetch(V_pf_status.lcounters[i]); for (int i = 0; i < FCNT_MAX; i++) s->fcounters[i] = pf_counter_u64_fetch(&V_pf_status.fcounters[i]); for (int i = 0; i < SCNT_MAX; i++) s->scounters[i] = counter_u64_fetch(V_pf_status.scounters[i]); bcopy(V_pf_status.ifname, s->ifname, IFNAMSIZ); bcopy(V_pf_status.pf_chksum, s->pf_chksum, PF_MD5_DIGEST_LENGTH); pfi_update_status(s->ifname, s); PF_RULES_RUNLOCK(); break; } case DIOCGETSTATUSNV: { error = pf_getstatus((struct pfioc_nv *)addr); break; } case DIOCSETSTATUSIF: { struct pfioc_if *pi = (struct pfioc_if *)addr; if (pi->ifname[0] == 0) { bzero(V_pf_status.ifname, IFNAMSIZ); break; } PF_RULES_WLOCK(); error = pf_user_strcpy(V_pf_status.ifname, pi->ifname, IFNAMSIZ); PF_RULES_WUNLOCK(); break; } case DIOCCLRSTATUS: { PF_RULES_WLOCK(); for (int i = 0; i < PFRES_MAX; i++) counter_u64_zero(V_pf_status.counters[i]); for (int i = 0; i < FCNT_MAX; i++) pf_counter_u64_zero(&V_pf_status.fcounters[i]); for (int i = 0; i < SCNT_MAX; i++) counter_u64_zero(V_pf_status.scounters[i]); for (int i = 0; i < KLCNT_MAX; i++) counter_u64_zero(V_pf_status.lcounters[i]); V_pf_status.since = time_second; if (*V_pf_status.ifname) pfi_update_status(V_pf_status.ifname, NULL); PF_RULES_WUNLOCK(); break; } case DIOCNATLOOK: { struct pfioc_natlook *pnl = (struct pfioc_natlook *)addr; struct pf_state_key *sk; struct pf_kstate *state; struct pf_state_key_cmp key; int m = 0, direction = pnl->direction; int sidx, didx; /* NATLOOK src and dst are reversed, so reverse sidx/didx */ sidx = (direction == PF_IN) ? 1 : 0; didx = (direction == PF_IN) ? 0 : 1; if (!pnl->proto || PF_AZERO(&pnl->saddr, pnl->af) || PF_AZERO(&pnl->daddr, pnl->af) || ((pnl->proto == IPPROTO_TCP || pnl->proto == IPPROTO_UDP) && (!pnl->dport || !pnl->sport))) error = EINVAL; else { bzero(&key, sizeof(key)); key.af = pnl->af; key.proto = pnl->proto; PF_ACPY(&key.addr[sidx], &pnl->saddr, pnl->af); key.port[sidx] = pnl->sport; PF_ACPY(&key.addr[didx], &pnl->daddr, pnl->af); key.port[didx] = pnl->dport; state = pf_find_state_all(&key, direction, &m); if (state == NULL) { error = ENOENT; } else { if (m > 1) { PF_STATE_UNLOCK(state); error = E2BIG; /* more than one state */ } else { sk = state->key[sidx]; PF_ACPY(&pnl->rsaddr, &sk->addr[sidx], sk->af); pnl->rsport = sk->port[sidx]; PF_ACPY(&pnl->rdaddr, &sk->addr[didx], sk->af); pnl->rdport = sk->port[didx]; PF_STATE_UNLOCK(state); } } } break; } case DIOCSETTIMEOUT: { struct pfioc_tm *pt = (struct pfioc_tm *)addr; int old; if (pt->timeout < 0 || pt->timeout >= PFTM_MAX || pt->seconds < 0) { error = EINVAL; break; } PF_RULES_WLOCK(); old = V_pf_default_rule.timeout[pt->timeout]; if (pt->timeout == PFTM_INTERVAL && pt->seconds == 0) pt->seconds = 1; V_pf_default_rule.timeout[pt->timeout] = pt->seconds; if (pt->timeout == PFTM_INTERVAL && pt->seconds < old) wakeup(pf_purge_thread); pt->seconds = old; PF_RULES_WUNLOCK(); break; } case DIOCGETTIMEOUT: { struct pfioc_tm *pt = (struct pfioc_tm *)addr; if (pt->timeout < 0 || pt->timeout >= PFTM_MAX) { error = EINVAL; break; } PF_RULES_RLOCK(); pt->seconds = V_pf_default_rule.timeout[pt->timeout]; PF_RULES_RUNLOCK(); break; } case DIOCGETLIMIT: { struct pfioc_limit *pl = (struct pfioc_limit *)addr; if (pl->index < 0 || pl->index >= PF_LIMIT_MAX) { error = EINVAL; break; } PF_RULES_RLOCK(); pl->limit = V_pf_limits[pl->index].limit; PF_RULES_RUNLOCK(); break; } case DIOCSETLIMIT: { struct pfioc_limit *pl = (struct pfioc_limit *)addr; int old_limit; PF_RULES_WLOCK(); if (pl->index < 0 || pl->index >= PF_LIMIT_MAX || V_pf_limits[pl->index].zone == NULL) { PF_RULES_WUNLOCK(); error = EINVAL; break; } uma_zone_set_max(V_pf_limits[pl->index].zone, pl->limit); old_limit = V_pf_limits[pl->index].limit; V_pf_limits[pl->index].limit = pl->limit; pl->limit = old_limit; PF_RULES_WUNLOCK(); break; } case DIOCSETDEBUG: { u_int32_t *level = (u_int32_t *)addr; PF_RULES_WLOCK(); V_pf_status.debug = *level; PF_RULES_WUNLOCK(); break; } case DIOCCLRRULECTRS: { /* obsoleted by DIOCGETRULE with action=PF_GET_CLR_CNTR */ struct pf_kruleset *ruleset = &pf_main_ruleset; struct pf_krule *rule; PF_RULES_WLOCK(); TAILQ_FOREACH(rule, ruleset->rules[PF_RULESET_FILTER].active.ptr, entries) { pf_counter_u64_zero(&rule->evaluations); for (int i = 0; i < 2; i++) { pf_counter_u64_zero(&rule->packets[i]); pf_counter_u64_zero(&rule->bytes[i]); } } PF_RULES_WUNLOCK(); break; } case DIOCGIFSPEEDV0: case DIOCGIFSPEEDV1: { struct pf_ifspeed_v1 *psp = (struct pf_ifspeed_v1 *)addr; struct pf_ifspeed_v1 ps; struct ifnet *ifp; if (psp->ifname[0] == '\0') { error = EINVAL; break; } error = pf_user_strcpy(ps.ifname, psp->ifname, IFNAMSIZ); if (error != 0) break; ifp = ifunit(ps.ifname); if (ifp != NULL) { psp->baudrate32 = (u_int32_t)uqmin(ifp->if_baudrate, UINT_MAX); if (cmd == DIOCGIFSPEEDV1) psp->baudrate = ifp->if_baudrate; } else { error = EINVAL; } break; } #ifdef ALTQ case DIOCSTARTALTQ: { struct pf_altq *altq; PF_RULES_WLOCK(); /* enable all altq interfaces on active list */ TAILQ_FOREACH(altq, V_pf_altq_ifs_active, entries) { if ((altq->local_flags & PFALTQ_FLAG_IF_REMOVED) == 0) { error = pf_enable_altq(altq); if (error != 0) break; } } if (error == 0) V_pf_altq_running = 1; PF_RULES_WUNLOCK(); DPFPRINTF(PF_DEBUG_MISC, ("altq: started\n")); break; } case DIOCSTOPALTQ: { struct pf_altq *altq; PF_RULES_WLOCK(); /* disable all altq interfaces on active list */ TAILQ_FOREACH(altq, V_pf_altq_ifs_active, entries) { if ((altq->local_flags & PFALTQ_FLAG_IF_REMOVED) == 0) { error = pf_disable_altq(altq); if (error != 0) break; } } if (error == 0) V_pf_altq_running = 0; PF_RULES_WUNLOCK(); DPFPRINTF(PF_DEBUG_MISC, ("altq: stopped\n")); break; } case DIOCADDALTQV0: case DIOCADDALTQV1: { struct pfioc_altq_v1 *pa = (struct pfioc_altq_v1 *)addr; struct pf_altq *altq, *a; struct ifnet *ifp; altq = malloc(sizeof(*altq), M_PFALTQ, M_WAITOK | M_ZERO); error = pf_import_kaltq(pa, altq, IOCPARM_LEN(cmd)); if (error) break; altq->local_flags = 0; PF_RULES_WLOCK(); if (pa->ticket != V_ticket_altqs_inactive) { PF_RULES_WUNLOCK(); free(altq, M_PFALTQ); error = EBUSY; break; } /* * if this is for a queue, find the discipline and * copy the necessary fields */ if (altq->qname[0] != 0) { if ((altq->qid = pf_qname2qid(altq->qname)) == 0) { PF_RULES_WUNLOCK(); error = EBUSY; free(altq, M_PFALTQ); break; } altq->altq_disc = NULL; TAILQ_FOREACH(a, V_pf_altq_ifs_inactive, entries) { if (strncmp(a->ifname, altq->ifname, IFNAMSIZ) == 0) { altq->altq_disc = a->altq_disc; break; } } } if ((ifp = ifunit(altq->ifname)) == NULL) altq->local_flags |= PFALTQ_FLAG_IF_REMOVED; else error = altq_add(ifp, altq); if (error) { PF_RULES_WUNLOCK(); free(altq, M_PFALTQ); break; } if (altq->qname[0] != 0) TAILQ_INSERT_TAIL(V_pf_altqs_inactive, altq, entries); else TAILQ_INSERT_TAIL(V_pf_altq_ifs_inactive, altq, entries); /* version error check done on import above */ pf_export_kaltq(altq, pa, IOCPARM_LEN(cmd)); PF_RULES_WUNLOCK(); break; } case DIOCGETALTQSV0: case DIOCGETALTQSV1: { struct pfioc_altq_v1 *pa = (struct pfioc_altq_v1 *)addr; struct pf_altq *altq; PF_RULES_RLOCK(); pa->nr = 0; TAILQ_FOREACH(altq, V_pf_altq_ifs_active, entries) pa->nr++; TAILQ_FOREACH(altq, V_pf_altqs_active, entries) pa->nr++; pa->ticket = V_ticket_altqs_active; PF_RULES_RUNLOCK(); break; } case DIOCGETALTQV0: case DIOCGETALTQV1: { struct pfioc_altq_v1 *pa = (struct pfioc_altq_v1 *)addr; struct pf_altq *altq; PF_RULES_RLOCK(); if (pa->ticket != V_ticket_altqs_active) { PF_RULES_RUNLOCK(); error = EBUSY; break; } altq = pf_altq_get_nth_active(pa->nr); if (altq == NULL) { PF_RULES_RUNLOCK(); error = EBUSY; break; } pf_export_kaltq(altq, pa, IOCPARM_LEN(cmd)); PF_RULES_RUNLOCK(); break; } case DIOCCHANGEALTQV0: case DIOCCHANGEALTQV1: /* CHANGEALTQ not supported yet! */ error = ENODEV; break; case DIOCGETQSTATSV0: case DIOCGETQSTATSV1: { struct pfioc_qstats_v1 *pq = (struct pfioc_qstats_v1 *)addr; struct pf_altq *altq; int nbytes; u_int32_t version; PF_RULES_RLOCK(); if (pq->ticket != V_ticket_altqs_active) { PF_RULES_RUNLOCK(); error = EBUSY; break; } nbytes = pq->nbytes; altq = pf_altq_get_nth_active(pq->nr); if (altq == NULL) { PF_RULES_RUNLOCK(); error = EBUSY; break; } if ((altq->local_flags & PFALTQ_FLAG_IF_REMOVED) != 0) { PF_RULES_RUNLOCK(); error = ENXIO; break; } PF_RULES_RUNLOCK(); if (cmd == DIOCGETQSTATSV0) version = 0; /* DIOCGETQSTATSV0 means stats struct v0 */ else version = pq->version; error = altq_getqstats(altq, pq->buf, &nbytes, version); if (error == 0) { pq->scheduler = altq->scheduler; pq->nbytes = nbytes; } break; } #endif /* ALTQ */ case DIOCBEGINADDRS: { struct pfioc_pooladdr *pp = (struct pfioc_pooladdr *)addr; PF_RULES_WLOCK(); pf_empty_kpool(&V_pf_pabuf); pp->ticket = ++V_ticket_pabuf; PF_RULES_WUNLOCK(); break; } case DIOCADDADDR: { struct pfioc_pooladdr *pp = (struct pfioc_pooladdr *)addr; struct pf_kpooladdr *pa; struct pfi_kkif *kif = NULL; #ifndef INET if (pp->af == AF_INET) { error = EAFNOSUPPORT; break; } #endif /* INET */ #ifndef INET6 if (pp->af == AF_INET6) { error = EAFNOSUPPORT; break; } #endif /* INET6 */ if (pp->addr.addr.type != PF_ADDR_ADDRMASK && pp->addr.addr.type != PF_ADDR_DYNIFTL && pp->addr.addr.type != PF_ADDR_TABLE) { error = EINVAL; break; } if (pp->addr.addr.p.dyn != NULL) { error = EINVAL; break; } pa = malloc(sizeof(*pa), M_PFRULE, M_WAITOK); error = pf_pooladdr_to_kpooladdr(&pp->addr, pa); if (error != 0) break; if (pa->ifname[0]) kif = pf_kkif_create(M_WAITOK); PF_RULES_WLOCK(); if (pp->ticket != V_ticket_pabuf) { PF_RULES_WUNLOCK(); if (pa->ifname[0]) pf_kkif_free(kif); free(pa, M_PFRULE); error = EBUSY; break; } if (pa->ifname[0]) { pa->kif = pfi_kkif_attach(kif, pa->ifname); kif = NULL; pfi_kkif_ref(pa->kif); } else pa->kif = NULL; if (pa->addr.type == PF_ADDR_DYNIFTL && ((error = pfi_dynaddr_setup(&pa->addr, pp->af)) != 0)) { if (pa->ifname[0]) pfi_kkif_unref(pa->kif); PF_RULES_WUNLOCK(); free(pa, M_PFRULE); break; } TAILQ_INSERT_TAIL(&V_pf_pabuf, pa, entries); PF_RULES_WUNLOCK(); break; } case DIOCGETADDRS: { struct pfioc_pooladdr *pp = (struct pfioc_pooladdr *)addr; struct pf_kpool *pool; struct pf_kpooladdr *pa; pp->anchor[sizeof(pp->anchor) - 1] = 0; pp->nr = 0; PF_RULES_RLOCK(); pool = pf_get_kpool(pp->anchor, pp->ticket, pp->r_action, pp->r_num, 0, 1, 0); if (pool == NULL) { PF_RULES_RUNLOCK(); error = EBUSY; break; } TAILQ_FOREACH(pa, &pool->list, entries) pp->nr++; PF_RULES_RUNLOCK(); break; } case DIOCGETADDR: { struct pfioc_pooladdr *pp = (struct pfioc_pooladdr *)addr; struct pf_kpool *pool; struct pf_kpooladdr *pa; u_int32_t nr = 0; pp->anchor[sizeof(pp->anchor) - 1] = 0; PF_RULES_RLOCK(); pool = pf_get_kpool(pp->anchor, pp->ticket, pp->r_action, pp->r_num, 0, 1, 1); if (pool == NULL) { PF_RULES_RUNLOCK(); error = EBUSY; break; } pa = TAILQ_FIRST(&pool->list); while ((pa != NULL) && (nr < pp->nr)) { pa = TAILQ_NEXT(pa, entries); nr++; } if (pa == NULL) { PF_RULES_RUNLOCK(); error = EBUSY; break; } pf_kpooladdr_to_pooladdr(pa, &pp->addr); pf_addr_copyout(&pp->addr.addr); PF_RULES_RUNLOCK(); break; } case DIOCCHANGEADDR: { struct pfioc_pooladdr *pca = (struct pfioc_pooladdr *)addr; struct pf_kpool *pool; struct pf_kpooladdr *oldpa = NULL, *newpa = NULL; struct pf_kruleset *ruleset; struct pfi_kkif *kif = NULL; pca->anchor[sizeof(pca->anchor) - 1] = 0; if (pca->action < PF_CHANGE_ADD_HEAD || pca->action > PF_CHANGE_REMOVE) { error = EINVAL; break; } if (pca->addr.addr.type != PF_ADDR_ADDRMASK && pca->addr.addr.type != PF_ADDR_DYNIFTL && pca->addr.addr.type != PF_ADDR_TABLE) { error = EINVAL; break; } if (pca->addr.addr.p.dyn != NULL) { error = EINVAL; break; } if (pca->action != PF_CHANGE_REMOVE) { #ifndef INET if (pca->af == AF_INET) { error = EAFNOSUPPORT; break; } #endif /* INET */ #ifndef INET6 if (pca->af == AF_INET6) { error = EAFNOSUPPORT; break; } #endif /* INET6 */ newpa = malloc(sizeof(*newpa), M_PFRULE, M_WAITOK); bcopy(&pca->addr, newpa, sizeof(struct pf_pooladdr)); if (newpa->ifname[0]) kif = pf_kkif_create(M_WAITOK); newpa->kif = NULL; } #define ERROUT(x) ERROUT_IOCTL(DIOCCHANGEADDR_error, x) PF_RULES_WLOCK(); ruleset = pf_find_kruleset(pca->anchor); if (ruleset == NULL) ERROUT(EBUSY); pool = pf_get_kpool(pca->anchor, pca->ticket, pca->r_action, pca->r_num, pca->r_last, 1, 1); if (pool == NULL) ERROUT(EBUSY); if (pca->action != PF_CHANGE_REMOVE) { if (newpa->ifname[0]) { newpa->kif = pfi_kkif_attach(kif, newpa->ifname); pfi_kkif_ref(newpa->kif); kif = NULL; } switch (newpa->addr.type) { case PF_ADDR_DYNIFTL: error = pfi_dynaddr_setup(&newpa->addr, pca->af); break; case PF_ADDR_TABLE: newpa->addr.p.tbl = pfr_attach_table(ruleset, newpa->addr.v.tblname); if (newpa->addr.p.tbl == NULL) error = ENOMEM; break; } if (error) goto DIOCCHANGEADDR_error; } switch (pca->action) { case PF_CHANGE_ADD_HEAD: oldpa = TAILQ_FIRST(&pool->list); break; case PF_CHANGE_ADD_TAIL: oldpa = TAILQ_LAST(&pool->list, pf_kpalist); break; default: oldpa = TAILQ_FIRST(&pool->list); for (int i = 0; oldpa && i < pca->nr; i++) oldpa = TAILQ_NEXT(oldpa, entries); if (oldpa == NULL) ERROUT(EINVAL); } if (pca->action == PF_CHANGE_REMOVE) { TAILQ_REMOVE(&pool->list, oldpa, entries); switch (oldpa->addr.type) { case PF_ADDR_DYNIFTL: pfi_dynaddr_remove(oldpa->addr.p.dyn); break; case PF_ADDR_TABLE: pfr_detach_table(oldpa->addr.p.tbl); break; } if (oldpa->kif) pfi_kkif_unref(oldpa->kif); free(oldpa, M_PFRULE); } else { if (oldpa == NULL) TAILQ_INSERT_TAIL(&pool->list, newpa, entries); else if (pca->action == PF_CHANGE_ADD_HEAD || pca->action == PF_CHANGE_ADD_BEFORE) TAILQ_INSERT_BEFORE(oldpa, newpa, entries); else TAILQ_INSERT_AFTER(&pool->list, oldpa, newpa, entries); } pool->cur = TAILQ_FIRST(&pool->list); PF_ACPY(&pool->counter, &pool->cur->addr.v.a.addr, pca->af); PF_RULES_WUNLOCK(); break; #undef ERROUT DIOCCHANGEADDR_error: if (newpa != NULL) { if (newpa->kif) pfi_kkif_unref(newpa->kif); free(newpa, M_PFRULE); } PF_RULES_WUNLOCK(); pf_kkif_free(kif); break; } case DIOCGETRULESETS: { struct pfioc_ruleset *pr = (struct pfioc_ruleset *)addr; struct pf_kruleset *ruleset; struct pf_kanchor *anchor; pr->path[sizeof(pr->path) - 1] = 0; PF_RULES_RLOCK(); if ((ruleset = pf_find_kruleset(pr->path)) == NULL) { PF_RULES_RUNLOCK(); error = ENOENT; break; } pr->nr = 0; if (ruleset->anchor == NULL) { /* XXX kludge for pf_main_ruleset */ RB_FOREACH(anchor, pf_kanchor_global, &V_pf_anchors) if (anchor->parent == NULL) pr->nr++; } else { RB_FOREACH(anchor, pf_kanchor_node, &ruleset->anchor->children) pr->nr++; } PF_RULES_RUNLOCK(); break; } case DIOCGETRULESET: { struct pfioc_ruleset *pr = (struct pfioc_ruleset *)addr; struct pf_kruleset *ruleset; struct pf_kanchor *anchor; u_int32_t nr = 0; pr->path[sizeof(pr->path) - 1] = 0; PF_RULES_RLOCK(); if ((ruleset = pf_find_kruleset(pr->path)) == NULL) { PF_RULES_RUNLOCK(); error = ENOENT; break; } pr->name[0] = 0; if (ruleset->anchor == NULL) { /* XXX kludge for pf_main_ruleset */ RB_FOREACH(anchor, pf_kanchor_global, &V_pf_anchors) if (anchor->parent == NULL && nr++ == pr->nr) { strlcpy(pr->name, anchor->name, sizeof(pr->name)); break; } } else { RB_FOREACH(anchor, pf_kanchor_node, &ruleset->anchor->children) if (nr++ == pr->nr) { strlcpy(pr->name, anchor->name, sizeof(pr->name)); break; } } if (!pr->name[0]) error = EBUSY; PF_RULES_RUNLOCK(); break; } case DIOCRCLRTABLES: { struct pfioc_table *io = (struct pfioc_table *)addr; if (io->pfrio_esize != 0) { error = ENODEV; break; } PF_RULES_WLOCK(); error = pfr_clr_tables(&io->pfrio_table, &io->pfrio_ndel, io->pfrio_flags | PFR_FLAG_USERIOCTL); PF_RULES_WUNLOCK(); break; } case DIOCRADDTABLES: { struct pfioc_table *io = (struct pfioc_table *)addr; struct pfr_table *pfrts; size_t totlen; if (io->pfrio_esize != sizeof(struct pfr_table)) { error = ENODEV; break; } if (io->pfrio_size < 0 || io->pfrio_size > pf_ioctl_maxcount || WOULD_OVERFLOW(io->pfrio_size, sizeof(struct pfr_table))) { error = ENOMEM; break; } totlen = io->pfrio_size * sizeof(struct pfr_table); pfrts = mallocarray(io->pfrio_size, sizeof(struct pfr_table), M_TEMP, M_WAITOK); error = copyin(io->pfrio_buffer, pfrts, totlen); if (error) { free(pfrts, M_TEMP); break; } PF_RULES_WLOCK(); error = pfr_add_tables(pfrts, io->pfrio_size, &io->pfrio_nadd, io->pfrio_flags | PFR_FLAG_USERIOCTL); PF_RULES_WUNLOCK(); free(pfrts, M_TEMP); break; } case DIOCRDELTABLES: { struct pfioc_table *io = (struct pfioc_table *)addr; struct pfr_table *pfrts; size_t totlen; if (io->pfrio_esize != sizeof(struct pfr_table)) { error = ENODEV; break; } if (io->pfrio_size < 0 || io->pfrio_size > pf_ioctl_maxcount || WOULD_OVERFLOW(io->pfrio_size, sizeof(struct pfr_table))) { error = ENOMEM; break; } totlen = io->pfrio_size * sizeof(struct pfr_table); pfrts = mallocarray(io->pfrio_size, sizeof(struct pfr_table), M_TEMP, M_WAITOK); error = copyin(io->pfrio_buffer, pfrts, totlen); if (error) { free(pfrts, M_TEMP); break; } PF_RULES_WLOCK(); error = pfr_del_tables(pfrts, io->pfrio_size, &io->pfrio_ndel, io->pfrio_flags | PFR_FLAG_USERIOCTL); PF_RULES_WUNLOCK(); free(pfrts, M_TEMP); break; } case DIOCRGETTABLES: { struct pfioc_table *io = (struct pfioc_table *)addr; struct pfr_table *pfrts; size_t totlen; int n; if (io->pfrio_esize != sizeof(struct pfr_table)) { error = ENODEV; break; } PF_RULES_RLOCK(); n = pfr_table_count(&io->pfrio_table, io->pfrio_flags); if (n < 0) { PF_RULES_RUNLOCK(); error = EINVAL; break; } io->pfrio_size = min(io->pfrio_size, n); totlen = io->pfrio_size * sizeof(struct pfr_table); pfrts = mallocarray(io->pfrio_size, sizeof(struct pfr_table), M_TEMP, M_NOWAIT | M_ZERO); if (pfrts == NULL) { error = ENOMEM; PF_RULES_RUNLOCK(); break; } error = pfr_get_tables(&io->pfrio_table, pfrts, &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL); PF_RULES_RUNLOCK(); if (error == 0) error = copyout(pfrts, io->pfrio_buffer, totlen); free(pfrts, M_TEMP); break; } case DIOCRGETTSTATS: { struct pfioc_table *io = (struct pfioc_table *)addr; struct pfr_tstats *pfrtstats; size_t totlen; int n; if (io->pfrio_esize != sizeof(struct pfr_tstats)) { error = ENODEV; break; } PF_TABLE_STATS_LOCK(); PF_RULES_RLOCK(); n = pfr_table_count(&io->pfrio_table, io->pfrio_flags); if (n < 0) { PF_RULES_RUNLOCK(); PF_TABLE_STATS_UNLOCK(); error = EINVAL; break; } io->pfrio_size = min(io->pfrio_size, n); totlen = io->pfrio_size * sizeof(struct pfr_tstats); pfrtstats = mallocarray(io->pfrio_size, sizeof(struct pfr_tstats), M_TEMP, M_NOWAIT | M_ZERO); if (pfrtstats == NULL) { error = ENOMEM; PF_RULES_RUNLOCK(); PF_TABLE_STATS_UNLOCK(); break; } error = pfr_get_tstats(&io->pfrio_table, pfrtstats, &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL); PF_RULES_RUNLOCK(); PF_TABLE_STATS_UNLOCK(); if (error == 0) error = copyout(pfrtstats, io->pfrio_buffer, totlen); free(pfrtstats, M_TEMP); break; } case DIOCRCLRTSTATS: { struct pfioc_table *io = (struct pfioc_table *)addr; struct pfr_table *pfrts; size_t totlen; if (io->pfrio_esize != sizeof(struct pfr_table)) { error = ENODEV; break; } if (io->pfrio_size < 0 || io->pfrio_size > pf_ioctl_maxcount || WOULD_OVERFLOW(io->pfrio_size, sizeof(struct pfr_table))) { /* We used to count tables and use the minimum required * size, so we didn't fail on overly large requests. * Keep doing so. */ io->pfrio_size = pf_ioctl_maxcount; break; } totlen = io->pfrio_size * sizeof(struct pfr_table); pfrts = mallocarray(io->pfrio_size, sizeof(struct pfr_table), M_TEMP, M_WAITOK); error = copyin(io->pfrio_buffer, pfrts, totlen); if (error) { free(pfrts, M_TEMP); break; } PF_TABLE_STATS_LOCK(); PF_RULES_RLOCK(); error = pfr_clr_tstats(pfrts, io->pfrio_size, &io->pfrio_nzero, io->pfrio_flags | PFR_FLAG_USERIOCTL); PF_RULES_RUNLOCK(); PF_TABLE_STATS_UNLOCK(); free(pfrts, M_TEMP); break; } case DIOCRSETTFLAGS: { struct pfioc_table *io = (struct pfioc_table *)addr; struct pfr_table *pfrts; size_t totlen; int n; if (io->pfrio_esize != sizeof(struct pfr_table)) { error = ENODEV; break; } PF_RULES_RLOCK(); n = pfr_table_count(&io->pfrio_table, io->pfrio_flags); if (n < 0) { PF_RULES_RUNLOCK(); error = EINVAL; break; } io->pfrio_size = min(io->pfrio_size, n); PF_RULES_RUNLOCK(); totlen = io->pfrio_size * sizeof(struct pfr_table); pfrts = mallocarray(io->pfrio_size, sizeof(struct pfr_table), M_TEMP, M_WAITOK); error = copyin(io->pfrio_buffer, pfrts, totlen); if (error) { free(pfrts, M_TEMP); break; } PF_RULES_WLOCK(); error = pfr_set_tflags(pfrts, io->pfrio_size, io->pfrio_setflag, io->pfrio_clrflag, &io->pfrio_nchange, &io->pfrio_ndel, io->pfrio_flags | PFR_FLAG_USERIOCTL); PF_RULES_WUNLOCK(); free(pfrts, M_TEMP); break; } case DIOCRCLRADDRS: { struct pfioc_table *io = (struct pfioc_table *)addr; if (io->pfrio_esize != 0) { error = ENODEV; break; } PF_RULES_WLOCK(); error = pfr_clr_addrs(&io->pfrio_table, &io->pfrio_ndel, io->pfrio_flags | PFR_FLAG_USERIOCTL); PF_RULES_WUNLOCK(); break; } case DIOCRADDADDRS: { struct pfioc_table *io = (struct pfioc_table *)addr; struct pfr_addr *pfras; size_t totlen; if (io->pfrio_esize != sizeof(struct pfr_addr)) { error = ENODEV; break; } if (io->pfrio_size < 0 || io->pfrio_size > pf_ioctl_maxcount || WOULD_OVERFLOW(io->pfrio_size, sizeof(struct pfr_addr))) { error = EINVAL; break; } totlen = io->pfrio_size * sizeof(struct pfr_addr); pfras = mallocarray(io->pfrio_size, sizeof(struct pfr_addr), M_TEMP, M_WAITOK); error = copyin(io->pfrio_buffer, pfras, totlen); if (error) { free(pfras, M_TEMP); break; } PF_RULES_WLOCK(); error = pfr_add_addrs(&io->pfrio_table, pfras, io->pfrio_size, &io->pfrio_nadd, io->pfrio_flags | PFR_FLAG_USERIOCTL); PF_RULES_WUNLOCK(); if (error == 0 && io->pfrio_flags & PFR_FLAG_FEEDBACK) error = copyout(pfras, io->pfrio_buffer, totlen); free(pfras, M_TEMP); break; } case DIOCRDELADDRS: { struct pfioc_table *io = (struct pfioc_table *)addr; struct pfr_addr *pfras; size_t totlen; if (io->pfrio_esize != sizeof(struct pfr_addr)) { error = ENODEV; break; } if (io->pfrio_size < 0 || io->pfrio_size > pf_ioctl_maxcount || WOULD_OVERFLOW(io->pfrio_size, sizeof(struct pfr_addr))) { error = EINVAL; break; } totlen = io->pfrio_size * sizeof(struct pfr_addr); pfras = mallocarray(io->pfrio_size, sizeof(struct pfr_addr), M_TEMP, M_WAITOK); error = copyin(io->pfrio_buffer, pfras, totlen); if (error) { free(pfras, M_TEMP); break; } PF_RULES_WLOCK(); error = pfr_del_addrs(&io->pfrio_table, pfras, io->pfrio_size, &io->pfrio_ndel, io->pfrio_flags | PFR_FLAG_USERIOCTL); PF_RULES_WUNLOCK(); if (error == 0 && io->pfrio_flags & PFR_FLAG_FEEDBACK) error = copyout(pfras, io->pfrio_buffer, totlen); free(pfras, M_TEMP); break; } case DIOCRSETADDRS: { struct pfioc_table *io = (struct pfioc_table *)addr; struct pfr_addr *pfras; size_t totlen, count; if (io->pfrio_esize != sizeof(struct pfr_addr)) { error = ENODEV; break; } if (io->pfrio_size < 0 || io->pfrio_size2 < 0) { error = EINVAL; break; } count = max(io->pfrio_size, io->pfrio_size2); if (count > pf_ioctl_maxcount || WOULD_OVERFLOW(count, sizeof(struct pfr_addr))) { error = EINVAL; break; } totlen = count * sizeof(struct pfr_addr); pfras = mallocarray(count, sizeof(struct pfr_addr), M_TEMP, M_WAITOK); error = copyin(io->pfrio_buffer, pfras, totlen); if (error) { free(pfras, M_TEMP); break; } PF_RULES_WLOCK(); error = pfr_set_addrs(&io->pfrio_table, pfras, io->pfrio_size, &io->pfrio_size2, &io->pfrio_nadd, &io->pfrio_ndel, &io->pfrio_nchange, io->pfrio_flags | PFR_FLAG_USERIOCTL, 0); PF_RULES_WUNLOCK(); if (error == 0 && io->pfrio_flags & PFR_FLAG_FEEDBACK) error = copyout(pfras, io->pfrio_buffer, totlen); free(pfras, M_TEMP); break; } case DIOCRGETADDRS: { struct pfioc_table *io = (struct pfioc_table *)addr; struct pfr_addr *pfras; size_t totlen; if (io->pfrio_esize != sizeof(struct pfr_addr)) { error = ENODEV; break; } if (io->pfrio_size < 0 || io->pfrio_size > pf_ioctl_maxcount || WOULD_OVERFLOW(io->pfrio_size, sizeof(struct pfr_addr))) { error = EINVAL; break; } totlen = io->pfrio_size * sizeof(struct pfr_addr); pfras = mallocarray(io->pfrio_size, sizeof(struct pfr_addr), M_TEMP, M_WAITOK | M_ZERO); PF_RULES_RLOCK(); error = pfr_get_addrs(&io->pfrio_table, pfras, &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL); PF_RULES_RUNLOCK(); if (error == 0) error = copyout(pfras, io->pfrio_buffer, totlen); free(pfras, M_TEMP); break; } case DIOCRGETASTATS: { struct pfioc_table *io = (struct pfioc_table *)addr; struct pfr_astats *pfrastats; size_t totlen; if (io->pfrio_esize != sizeof(struct pfr_astats)) { error = ENODEV; break; } if (io->pfrio_size < 0 || io->pfrio_size > pf_ioctl_maxcount || WOULD_OVERFLOW(io->pfrio_size, sizeof(struct pfr_astats))) { error = EINVAL; break; } totlen = io->pfrio_size * sizeof(struct pfr_astats); pfrastats = mallocarray(io->pfrio_size, sizeof(struct pfr_astats), M_TEMP, M_WAITOK | M_ZERO); PF_RULES_RLOCK(); error = pfr_get_astats(&io->pfrio_table, pfrastats, &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL); PF_RULES_RUNLOCK(); if (error == 0) error = copyout(pfrastats, io->pfrio_buffer, totlen); free(pfrastats, M_TEMP); break; } case DIOCRCLRASTATS: { struct pfioc_table *io = (struct pfioc_table *)addr; struct pfr_addr *pfras; size_t totlen; if (io->pfrio_esize != sizeof(struct pfr_addr)) { error = ENODEV; break; } if (io->pfrio_size < 0 || io->pfrio_size > pf_ioctl_maxcount || WOULD_OVERFLOW(io->pfrio_size, sizeof(struct pfr_addr))) { error = EINVAL; break; } totlen = io->pfrio_size * sizeof(struct pfr_addr); pfras = mallocarray(io->pfrio_size, sizeof(struct pfr_addr), M_TEMP, M_WAITOK); error = copyin(io->pfrio_buffer, pfras, totlen); if (error) { free(pfras, M_TEMP); break; } PF_RULES_WLOCK(); error = pfr_clr_astats(&io->pfrio_table, pfras, io->pfrio_size, &io->pfrio_nzero, io->pfrio_flags | PFR_FLAG_USERIOCTL); PF_RULES_WUNLOCK(); if (error == 0 && io->pfrio_flags & PFR_FLAG_FEEDBACK) error = copyout(pfras, io->pfrio_buffer, totlen); free(pfras, M_TEMP); break; } case DIOCRTSTADDRS: { struct pfioc_table *io = (struct pfioc_table *)addr; struct pfr_addr *pfras; size_t totlen; if (io->pfrio_esize != sizeof(struct pfr_addr)) { error = ENODEV; break; } if (io->pfrio_size < 0 || io->pfrio_size > pf_ioctl_maxcount || WOULD_OVERFLOW(io->pfrio_size, sizeof(struct pfr_addr))) { error = EINVAL; break; } totlen = io->pfrio_size * sizeof(struct pfr_addr); pfras = mallocarray(io->pfrio_size, sizeof(struct pfr_addr), M_TEMP, M_WAITOK); error = copyin(io->pfrio_buffer, pfras, totlen); if (error) { free(pfras, M_TEMP); break; } PF_RULES_RLOCK(); error = pfr_tst_addrs(&io->pfrio_table, pfras, io->pfrio_size, &io->pfrio_nmatch, io->pfrio_flags | PFR_FLAG_USERIOCTL); PF_RULES_RUNLOCK(); if (error == 0) error = copyout(pfras, io->pfrio_buffer, totlen); free(pfras, M_TEMP); break; } case DIOCRINADEFINE: { struct pfioc_table *io = (struct pfioc_table *)addr; struct pfr_addr *pfras; size_t totlen; if (io->pfrio_esize != sizeof(struct pfr_addr)) { error = ENODEV; break; } if (io->pfrio_size < 0 || io->pfrio_size > pf_ioctl_maxcount || WOULD_OVERFLOW(io->pfrio_size, sizeof(struct pfr_addr))) { error = EINVAL; break; } totlen = io->pfrio_size * sizeof(struct pfr_addr); pfras = mallocarray(io->pfrio_size, sizeof(struct pfr_addr), M_TEMP, M_WAITOK); error = copyin(io->pfrio_buffer, pfras, totlen); if (error) { free(pfras, M_TEMP); break; } PF_RULES_WLOCK(); error = pfr_ina_define(&io->pfrio_table, pfras, io->pfrio_size, &io->pfrio_nadd, &io->pfrio_naddr, io->pfrio_ticket, io->pfrio_flags | PFR_FLAG_USERIOCTL); PF_RULES_WUNLOCK(); free(pfras, M_TEMP); break; } case DIOCOSFPADD: { struct pf_osfp_ioctl *io = (struct pf_osfp_ioctl *)addr; PF_RULES_WLOCK(); error = pf_osfp_add(io); PF_RULES_WUNLOCK(); break; } case DIOCOSFPGET: { struct pf_osfp_ioctl *io = (struct pf_osfp_ioctl *)addr; PF_RULES_RLOCK(); error = pf_osfp_get(io); PF_RULES_RUNLOCK(); break; } case DIOCXBEGIN: { struct pfioc_trans *io = (struct pfioc_trans *)addr; struct pfioc_trans_e *ioes, *ioe; size_t totlen; int i; if (io->esize != sizeof(*ioe)) { error = ENODEV; break; } if (io->size < 0 || io->size > pf_ioctl_maxcount || WOULD_OVERFLOW(io->size, sizeof(struct pfioc_trans_e))) { error = EINVAL; break; } totlen = sizeof(struct pfioc_trans_e) * io->size; ioes = mallocarray(io->size, sizeof(struct pfioc_trans_e), M_TEMP, M_WAITOK); error = copyin(io->array, ioes, totlen); if (error) { free(ioes, M_TEMP); break; } PF_RULES_WLOCK(); for (i = 0, ioe = ioes; i < io->size; i++, ioe++) { ioe->anchor[sizeof(ioe->anchor) - 1] = '\0'; switch (ioe->rs_num) { case PF_RULESET_ETH: if ((error = pf_begin_eth(&ioe->ticket, ioe->anchor))) { PF_RULES_WUNLOCK(); free(ioes, M_TEMP); goto fail; } break; #ifdef ALTQ case PF_RULESET_ALTQ: if (ioe->anchor[0]) { PF_RULES_WUNLOCK(); free(ioes, M_TEMP); error = EINVAL; goto fail; } if ((error = pf_begin_altq(&ioe->ticket))) { PF_RULES_WUNLOCK(); free(ioes, M_TEMP); goto fail; } break; #endif /* ALTQ */ case PF_RULESET_TABLE: { struct pfr_table table; bzero(&table, sizeof(table)); strlcpy(table.pfrt_anchor, ioe->anchor, sizeof(table.pfrt_anchor)); if ((error = pfr_ina_begin(&table, &ioe->ticket, NULL, 0))) { PF_RULES_WUNLOCK(); free(ioes, M_TEMP); goto fail; } break; } default: if ((error = pf_begin_rules(&ioe->ticket, ioe->rs_num, ioe->anchor))) { PF_RULES_WUNLOCK(); free(ioes, M_TEMP); goto fail; } break; } } PF_RULES_WUNLOCK(); error = copyout(ioes, io->array, totlen); free(ioes, M_TEMP); break; } case DIOCXROLLBACK: { struct pfioc_trans *io = (struct pfioc_trans *)addr; struct pfioc_trans_e *ioe, *ioes; size_t totlen; int i; if (io->esize != sizeof(*ioe)) { error = ENODEV; break; } if (io->size < 0 || io->size > pf_ioctl_maxcount || WOULD_OVERFLOW(io->size, sizeof(struct pfioc_trans_e))) { error = EINVAL; break; } totlen = sizeof(struct pfioc_trans_e) * io->size; ioes = mallocarray(io->size, sizeof(struct pfioc_trans_e), M_TEMP, M_WAITOK); error = copyin(io->array, ioes, totlen); if (error) { free(ioes, M_TEMP); break; } PF_RULES_WLOCK(); for (i = 0, ioe = ioes; i < io->size; i++, ioe++) { ioe->anchor[sizeof(ioe->anchor) - 1] = '\0'; switch (ioe->rs_num) { case PF_RULESET_ETH: if ((error = pf_rollback_eth(ioe->ticket, ioe->anchor))) { PF_RULES_WUNLOCK(); free(ioes, M_TEMP); goto fail; /* really bad */ } break; #ifdef ALTQ case PF_RULESET_ALTQ: if (ioe->anchor[0]) { PF_RULES_WUNLOCK(); free(ioes, M_TEMP); error = EINVAL; goto fail; } if ((error = pf_rollback_altq(ioe->ticket))) { PF_RULES_WUNLOCK(); free(ioes, M_TEMP); goto fail; /* really bad */ } break; #endif /* ALTQ */ case PF_RULESET_TABLE: { struct pfr_table table; bzero(&table, sizeof(table)); strlcpy(table.pfrt_anchor, ioe->anchor, sizeof(table.pfrt_anchor)); if ((error = pfr_ina_rollback(&table, ioe->ticket, NULL, 0))) { PF_RULES_WUNLOCK(); free(ioes, M_TEMP); goto fail; /* really bad */ } break; } default: if ((error = pf_rollback_rules(ioe->ticket, ioe->rs_num, ioe->anchor))) { PF_RULES_WUNLOCK(); free(ioes, M_TEMP); goto fail; /* really bad */ } break; } } PF_RULES_WUNLOCK(); free(ioes, M_TEMP); break; } case DIOCXCOMMIT: { struct pfioc_trans *io = (struct pfioc_trans *)addr; struct pfioc_trans_e *ioe, *ioes; struct pf_kruleset *rs; struct pf_keth_ruleset *ers; size_t totlen; int i; if (io->esize != sizeof(*ioe)) { error = ENODEV; break; } if (io->size < 0 || io->size > pf_ioctl_maxcount || WOULD_OVERFLOW(io->size, sizeof(struct pfioc_trans_e))) { error = EINVAL; break; } totlen = sizeof(struct pfioc_trans_e) * io->size; ioes = mallocarray(io->size, sizeof(struct pfioc_trans_e), M_TEMP, M_WAITOK); error = copyin(io->array, ioes, totlen); if (error) { free(ioes, M_TEMP); break; } PF_RULES_WLOCK(); /* First makes sure everything will succeed. */ for (i = 0, ioe = ioes; i < io->size; i++, ioe++) { ioe->anchor[sizeof(ioe->anchor) - 1] = 0; switch (ioe->rs_num) { case PF_RULESET_ETH: ers = pf_find_keth_ruleset(ioe->anchor); if (ers == NULL || ioe->ticket == 0 || ioe->ticket != ers->inactive.ticket) { PF_RULES_WUNLOCK(); free(ioes, M_TEMP); error = EINVAL; goto fail; } break; #ifdef ALTQ case PF_RULESET_ALTQ: if (ioe->anchor[0]) { PF_RULES_WUNLOCK(); free(ioes, M_TEMP); error = EINVAL; goto fail; } if (!V_altqs_inactive_open || ioe->ticket != V_ticket_altqs_inactive) { PF_RULES_WUNLOCK(); free(ioes, M_TEMP); error = EBUSY; goto fail; } break; #endif /* ALTQ */ case PF_RULESET_TABLE: rs = pf_find_kruleset(ioe->anchor); if (rs == NULL || !rs->topen || ioe->ticket != rs->tticket) { PF_RULES_WUNLOCK(); free(ioes, M_TEMP); error = EBUSY; goto fail; } break; default: if (ioe->rs_num < 0 || ioe->rs_num >= PF_RULESET_MAX) { PF_RULES_WUNLOCK(); free(ioes, M_TEMP); error = EINVAL; goto fail; } rs = pf_find_kruleset(ioe->anchor); if (rs == NULL || !rs->rules[ioe->rs_num].inactive.open || rs->rules[ioe->rs_num].inactive.ticket != ioe->ticket) { PF_RULES_WUNLOCK(); free(ioes, M_TEMP); error = EBUSY; goto fail; } break; } } /* Now do the commit - no errors should happen here. */ for (i = 0, ioe = ioes; i < io->size; i++, ioe++) { switch (ioe->rs_num) { case PF_RULESET_ETH: if ((error = pf_commit_eth(ioe->ticket, ioe->anchor))) { PF_RULES_WUNLOCK(); free(ioes, M_TEMP); goto fail; /* really bad */ } break; #ifdef ALTQ case PF_RULESET_ALTQ: if ((error = pf_commit_altq(ioe->ticket))) { PF_RULES_WUNLOCK(); free(ioes, M_TEMP); goto fail; /* really bad */ } break; #endif /* ALTQ */ case PF_RULESET_TABLE: { struct pfr_table table; bzero(&table, sizeof(table)); (void)strlcpy(table.pfrt_anchor, ioe->anchor, sizeof(table.pfrt_anchor)); if ((error = pfr_ina_commit(&table, ioe->ticket, NULL, NULL, 0))) { PF_RULES_WUNLOCK(); free(ioes, M_TEMP); goto fail; /* really bad */ } break; } default: if ((error = pf_commit_rules(ioe->ticket, ioe->rs_num, ioe->anchor))) { PF_RULES_WUNLOCK(); free(ioes, M_TEMP); goto fail; /* really bad */ } break; } } PF_RULES_WUNLOCK(); /* Only hook into EtherNet taffic if we've got rules for it. */ if (! TAILQ_EMPTY(V_pf_keth->active.rules)) hook_pf_eth(); else dehook_pf_eth(); free(ioes, M_TEMP); break; } case DIOCGETSRCNODES: { struct pfioc_src_nodes *psn = (struct pfioc_src_nodes *)addr; struct pf_srchash *sh; struct pf_ksrc_node *n; struct pf_src_node *p, *pstore; uint32_t i, nr = 0; for (i = 0, sh = V_pf_srchash; i <= pf_srchashmask; i++, sh++) { PF_HASHROW_LOCK(sh); LIST_FOREACH(n, &sh->nodes, entry) nr++; PF_HASHROW_UNLOCK(sh); } psn->psn_len = min(psn->psn_len, sizeof(struct pf_src_node) * nr); if (psn->psn_len == 0) { psn->psn_len = sizeof(struct pf_src_node) * nr; break; } nr = 0; p = pstore = malloc(psn->psn_len, M_TEMP, M_WAITOK | M_ZERO); for (i = 0, sh = V_pf_srchash; i <= pf_srchashmask; i++, sh++) { PF_HASHROW_LOCK(sh); LIST_FOREACH(n, &sh->nodes, entry) { if ((nr + 1) * sizeof(*p) > (unsigned)psn->psn_len) break; pf_src_node_copy(n, p); p++; nr++; } PF_HASHROW_UNLOCK(sh); } error = copyout(pstore, psn->psn_src_nodes, sizeof(struct pf_src_node) * nr); if (error) { free(pstore, M_TEMP); break; } psn->psn_len = sizeof(struct pf_src_node) * nr; free(pstore, M_TEMP); break; } case DIOCCLRSRCNODES: { pf_clear_srcnodes(NULL); pf_purge_expired_src_nodes(); break; } case DIOCKILLSRCNODES: pf_kill_srcnodes((struct pfioc_src_node_kill *)addr); break; #ifdef COMPAT_FREEBSD13 case DIOCKEEPCOUNTERS_FREEBSD13: #endif case DIOCKEEPCOUNTERS: error = pf_keepcounters((struct pfioc_nv *)addr); break; case DIOCGETSYNCOOKIES: error = pf_get_syncookies((struct pfioc_nv *)addr); break; case DIOCSETSYNCOOKIES: error = pf_set_syncookies((struct pfioc_nv *)addr); break; case DIOCSETHOSTID: { u_int32_t *hostid = (u_int32_t *)addr; PF_RULES_WLOCK(); if (*hostid == 0) V_pf_status.hostid = arc4random(); else V_pf_status.hostid = *hostid; PF_RULES_WUNLOCK(); break; } case DIOCOSFPFLUSH: PF_RULES_WLOCK(); pf_osfp_flush(); PF_RULES_WUNLOCK(); break; case DIOCIGETIFACES: { struct pfioc_iface *io = (struct pfioc_iface *)addr; struct pfi_kif *ifstore; size_t bufsiz; if (io->pfiio_esize != sizeof(struct pfi_kif)) { error = ENODEV; break; } if (io->pfiio_size < 0 || io->pfiio_size > pf_ioctl_maxcount || WOULD_OVERFLOW(io->pfiio_size, sizeof(struct pfi_kif))) { error = EINVAL; break; } bufsiz = io->pfiio_size * sizeof(struct pfi_kif); ifstore = mallocarray(io->pfiio_size, sizeof(struct pfi_kif), M_TEMP, M_WAITOK | M_ZERO); PF_RULES_RLOCK(); pfi_get_ifaces(io->pfiio_name, ifstore, &io->pfiio_size); PF_RULES_RUNLOCK(); error = copyout(ifstore, io->pfiio_buffer, bufsiz); free(ifstore, M_TEMP); break; } case DIOCSETIFFLAG: { struct pfioc_iface *io = (struct pfioc_iface *)addr; PF_RULES_WLOCK(); error = pfi_set_flags(io->pfiio_name, io->pfiio_flags); PF_RULES_WUNLOCK(); break; } case DIOCCLRIFFLAG: { struct pfioc_iface *io = (struct pfioc_iface *)addr; PF_RULES_WLOCK(); error = pfi_clear_flags(io->pfiio_name, io->pfiio_flags); PF_RULES_WUNLOCK(); break; } default: error = ENODEV; break; } fail: if (sx_xlocked(&pf_ioctl_lock)) sx_xunlock(&pf_ioctl_lock); CURVNET_RESTORE(); #undef ERROUT_IOCTL return (error); } void pfsync_state_export(struct pfsync_state *sp, struct pf_kstate *st) { bzero(sp, sizeof(struct pfsync_state)); /* copy from state key */ sp->key[PF_SK_WIRE].addr[0] = st->key[PF_SK_WIRE]->addr[0]; sp->key[PF_SK_WIRE].addr[1] = st->key[PF_SK_WIRE]->addr[1]; sp->key[PF_SK_WIRE].port[0] = st->key[PF_SK_WIRE]->port[0]; sp->key[PF_SK_WIRE].port[1] = st->key[PF_SK_WIRE]->port[1]; sp->key[PF_SK_STACK].addr[0] = st->key[PF_SK_STACK]->addr[0]; sp->key[PF_SK_STACK].addr[1] = st->key[PF_SK_STACK]->addr[1]; sp->key[PF_SK_STACK].port[0] = st->key[PF_SK_STACK]->port[0]; sp->key[PF_SK_STACK].port[1] = st->key[PF_SK_STACK]->port[1]; sp->proto = st->key[PF_SK_WIRE]->proto; sp->af = st->key[PF_SK_WIRE]->af; /* copy from state */ strlcpy(sp->ifname, st->kif->pfik_name, sizeof(sp->ifname)); bcopy(&st->rt_addr, &sp->rt_addr, sizeof(sp->rt_addr)); sp->creation = htonl(time_uptime - st->creation); sp->expire = pf_state_expires(st); if (sp->expire <= time_uptime) sp->expire = htonl(0); else sp->expire = htonl(sp->expire - time_uptime); sp->direction = st->direction; sp->log = st->log; sp->timeout = st->timeout; sp->state_flags = st->state_flags; if (st->src_node) sp->sync_flags |= PFSYNC_FLAG_SRCNODE; if (st->nat_src_node) sp->sync_flags |= PFSYNC_FLAG_NATSRCNODE; sp->id = st->id; sp->creatorid = st->creatorid; pf_state_peer_hton(&st->src, &sp->src); pf_state_peer_hton(&st->dst, &sp->dst); if (st->rule.ptr == NULL) sp->rule = htonl(-1); else sp->rule = htonl(st->rule.ptr->nr); if (st->anchor.ptr == NULL) sp->anchor = htonl(-1); else sp->anchor = htonl(st->anchor.ptr->nr); if (st->nat_rule.ptr == NULL) sp->nat_rule = htonl(-1); else sp->nat_rule = htonl(st->nat_rule.ptr->nr); pf_state_counter_hton(st->packets[0], sp->packets[0]); pf_state_counter_hton(st->packets[1], sp->packets[1]); pf_state_counter_hton(st->bytes[0], sp->bytes[0]); pf_state_counter_hton(st->bytes[1], sp->bytes[1]); } void pf_state_export(struct pf_state_export *sp, struct pf_kstate *st) { bzero(sp, sizeof(*sp)); sp->version = PF_STATE_VERSION; /* copy from state key */ sp->key[PF_SK_WIRE].addr[0] = st->key[PF_SK_WIRE]->addr[0]; sp->key[PF_SK_WIRE].addr[1] = st->key[PF_SK_WIRE]->addr[1]; sp->key[PF_SK_WIRE].port[0] = st->key[PF_SK_WIRE]->port[0]; sp->key[PF_SK_WIRE].port[1] = st->key[PF_SK_WIRE]->port[1]; sp->key[PF_SK_STACK].addr[0] = st->key[PF_SK_STACK]->addr[0]; sp->key[PF_SK_STACK].addr[1] = st->key[PF_SK_STACK]->addr[1]; sp->key[PF_SK_STACK].port[0] = st->key[PF_SK_STACK]->port[0]; sp->key[PF_SK_STACK].port[1] = st->key[PF_SK_STACK]->port[1]; sp->proto = st->key[PF_SK_WIRE]->proto; sp->af = st->key[PF_SK_WIRE]->af; /* copy from state */ strlcpy(sp->ifname, st->kif->pfik_name, sizeof(sp->ifname)); strlcpy(sp->orig_ifname, st->orig_kif->pfik_name, sizeof(sp->orig_ifname)); bcopy(&st->rt_addr, &sp->rt_addr, sizeof(sp->rt_addr)); sp->creation = htonl(time_uptime - st->creation); sp->expire = pf_state_expires(st); if (sp->expire <= time_uptime) sp->expire = htonl(0); else sp->expire = htonl(sp->expire - time_uptime); sp->direction = st->direction; sp->log = st->log; sp->timeout = st->timeout; sp->state_flags = st->state_flags; if (st->src_node) sp->sync_flags |= PFSYNC_FLAG_SRCNODE; if (st->nat_src_node) sp->sync_flags |= PFSYNC_FLAG_NATSRCNODE; sp->id = st->id; sp->creatorid = st->creatorid; pf_state_peer_hton(&st->src, &sp->src); pf_state_peer_hton(&st->dst, &sp->dst); if (st->rule.ptr == NULL) sp->rule = htonl(-1); else sp->rule = htonl(st->rule.ptr->nr); if (st->anchor.ptr == NULL) sp->anchor = htonl(-1); else sp->anchor = htonl(st->anchor.ptr->nr); if (st->nat_rule.ptr == NULL) sp->nat_rule = htonl(-1); else sp->nat_rule = htonl(st->nat_rule.ptr->nr); sp->packets[0] = st->packets[0]; sp->packets[1] = st->packets[1]; sp->bytes[0] = st->bytes[0]; sp->bytes[1] = st->bytes[1]; } static void pf_tbladdr_copyout(struct pf_addr_wrap *aw) { struct pfr_ktable *kt; KASSERT(aw->type == PF_ADDR_TABLE, ("%s: type %u", __func__, aw->type)); kt = aw->p.tbl; if (!(kt->pfrkt_flags & PFR_TFLAG_ACTIVE) && kt->pfrkt_root != NULL) kt = kt->pfrkt_root; aw->p.tbl = NULL; aw->p.tblcnt = (kt->pfrkt_flags & PFR_TFLAG_ACTIVE) ? kt->pfrkt_cnt : -1; } static int pf_add_status_counters(nvlist_t *nvl, const char *name, counter_u64_t *counters, size_t number, char **names) { nvlist_t *nvc; nvc = nvlist_create(0); if (nvc == NULL) return (ENOMEM); for (int i = 0; i < number; i++) { nvlist_append_number_array(nvc, "counters", counter_u64_fetch(counters[i])); nvlist_append_string_array(nvc, "names", names[i]); nvlist_append_number_array(nvc, "ids", i); } nvlist_add_nvlist(nvl, name, nvc); nvlist_destroy(nvc); return (0); } static int pf_getstatus(struct pfioc_nv *nv) { nvlist_t *nvl = NULL, *nvc = NULL; void *nvlpacked = NULL; int error; struct pf_status s; char *pf_reasons[PFRES_MAX+1] = PFRES_NAMES; char *pf_lcounter[KLCNT_MAX+1] = KLCNT_NAMES; char *pf_fcounter[FCNT_MAX+1] = FCNT_NAMES; PF_RULES_RLOCK_TRACKER; #define ERROUT(x) ERROUT_FUNCTION(errout, x) PF_RULES_RLOCK(); nvl = nvlist_create(0); if (nvl == NULL) ERROUT(ENOMEM); nvlist_add_bool(nvl, "running", V_pf_status.running); nvlist_add_number(nvl, "since", V_pf_status.since); nvlist_add_number(nvl, "debug", V_pf_status.debug); nvlist_add_number(nvl, "hostid", V_pf_status.hostid); nvlist_add_number(nvl, "states", V_pf_status.states); nvlist_add_number(nvl, "src_nodes", V_pf_status.src_nodes); /* counters */ error = pf_add_status_counters(nvl, "counters", V_pf_status.counters, PFRES_MAX, pf_reasons); if (error != 0) ERROUT(error); /* lcounters */ error = pf_add_status_counters(nvl, "lcounters", V_pf_status.lcounters, KLCNT_MAX, pf_lcounter); if (error != 0) ERROUT(error); /* fcounters */ nvc = nvlist_create(0); if (nvc == NULL) ERROUT(ENOMEM); for (int i = 0; i < FCNT_MAX; i++) { nvlist_append_number_array(nvc, "counters", pf_counter_u64_fetch(&V_pf_status.fcounters[i])); nvlist_append_string_array(nvc, "names", pf_fcounter[i]); nvlist_append_number_array(nvc, "ids", i); } nvlist_add_nvlist(nvl, "fcounters", nvc); nvlist_destroy(nvc); nvc = NULL; /* scounters */ error = pf_add_status_counters(nvl, "scounters", V_pf_status.scounters, SCNT_MAX, pf_fcounter); if (error != 0) ERROUT(error); nvlist_add_string(nvl, "ifname", V_pf_status.ifname); nvlist_add_binary(nvl, "chksum", V_pf_status.pf_chksum, PF_MD5_DIGEST_LENGTH); pfi_update_status(V_pf_status.ifname, &s); /* pcounters / bcounters */ for (int i = 0; i < 2; i++) { for (int j = 0; j < 2; j++) { for (int k = 0; k < 2; k++) { nvlist_append_number_array(nvl, "pcounters", s.pcounters[i][j][k]); } nvlist_append_number_array(nvl, "bcounters", s.bcounters[i][j]); } } nvlpacked = nvlist_pack(nvl, &nv->len); if (nvlpacked == NULL) ERROUT(ENOMEM); if (nv->size == 0) ERROUT(0); else if (nv->size < nv->len) ERROUT(ENOSPC); PF_RULES_RUNLOCK(); error = copyout(nvlpacked, nv->data, nv->len); goto done; #undef ERROUT errout: PF_RULES_RUNLOCK(); done: free(nvlpacked, M_NVLIST); nvlist_destroy(nvc); nvlist_destroy(nvl); return (error); } /* * XXX - Check for version missmatch!!! */ static void pf_clear_all_states(void) { struct pf_kstate *s; u_int i; for (i = 0; i <= pf_hashmask; i++) { struct pf_idhash *ih = &V_pf_idhash[i]; relock: PF_HASHROW_LOCK(ih); LIST_FOREACH(s, &ih->states, entry) { s->timeout = PFTM_PURGE; /* Don't send out individual delete messages. */ s->state_flags |= PFSTATE_NOSYNC; pf_unlink_state(s); goto relock; } PF_HASHROW_UNLOCK(ih); } } static int pf_clear_tables(void) { struct pfioc_table io; int error; bzero(&io, sizeof(io)); error = pfr_clr_tables(&io.pfrio_table, &io.pfrio_ndel, io.pfrio_flags); return (error); } static void pf_clear_srcnodes(struct pf_ksrc_node *n) { struct pf_kstate *s; int i; for (i = 0; i <= pf_hashmask; i++) { struct pf_idhash *ih = &V_pf_idhash[i]; PF_HASHROW_LOCK(ih); LIST_FOREACH(s, &ih->states, entry) { if (n == NULL || n == s->src_node) s->src_node = NULL; if (n == NULL || n == s->nat_src_node) s->nat_src_node = NULL; } PF_HASHROW_UNLOCK(ih); } if (n == NULL) { struct pf_srchash *sh; for (i = 0, sh = V_pf_srchash; i <= pf_srchashmask; i++, sh++) { PF_HASHROW_LOCK(sh); LIST_FOREACH(n, &sh->nodes, entry) { n->expire = 1; n->states = 0; } PF_HASHROW_UNLOCK(sh); } } else { /* XXX: hash slot should already be locked here. */ n->expire = 1; n->states = 0; } } static void pf_kill_srcnodes(struct pfioc_src_node_kill *psnk) { struct pf_ksrc_node_list kill; LIST_INIT(&kill); for (int i = 0; i <= pf_srchashmask; i++) { struct pf_srchash *sh = &V_pf_srchash[i]; struct pf_ksrc_node *sn, *tmp; PF_HASHROW_LOCK(sh); LIST_FOREACH_SAFE(sn, &sh->nodes, entry, tmp) if (PF_MATCHA(psnk->psnk_src.neg, &psnk->psnk_src.addr.v.a.addr, &psnk->psnk_src.addr.v.a.mask, &sn->addr, sn->af) && PF_MATCHA(psnk->psnk_dst.neg, &psnk->psnk_dst.addr.v.a.addr, &psnk->psnk_dst.addr.v.a.mask, &sn->raddr, sn->af)) { pf_unlink_src_node(sn); LIST_INSERT_HEAD(&kill, sn, entry); sn->expire = 1; } PF_HASHROW_UNLOCK(sh); } for (int i = 0; i <= pf_hashmask; i++) { struct pf_idhash *ih = &V_pf_idhash[i]; struct pf_kstate *s; PF_HASHROW_LOCK(ih); LIST_FOREACH(s, &ih->states, entry) { if (s->src_node && s->src_node->expire == 1) s->src_node = NULL; if (s->nat_src_node && s->nat_src_node->expire == 1) s->nat_src_node = NULL; } PF_HASHROW_UNLOCK(ih); } psnk->psnk_killed = pf_free_src_nodes(&kill); } static int pf_keepcounters(struct pfioc_nv *nv) { nvlist_t *nvl = NULL; void *nvlpacked = NULL; int error = 0; #define ERROUT(x) ERROUT_FUNCTION(on_error, x) if (nv->len > pf_ioctl_maxcount) ERROUT(ENOMEM); nvlpacked = malloc(nv->len, M_TEMP, M_WAITOK); if (nvlpacked == NULL) ERROUT(ENOMEM); error = copyin(nv->data, nvlpacked, nv->len); if (error) ERROUT(error); nvl = nvlist_unpack(nvlpacked, nv->len, 0); if (nvl == NULL) ERROUT(EBADMSG); if (! nvlist_exists_bool(nvl, "keep_counters")) ERROUT(EBADMSG); V_pf_status.keep_counters = nvlist_get_bool(nvl, "keep_counters"); on_error: nvlist_destroy(nvl); free(nvlpacked, M_TEMP); return (error); } static unsigned int pf_clear_states(const struct pf_kstate_kill *kill) { struct pf_state_key_cmp match_key; struct pf_kstate *s; struct pfi_kkif *kif; int idx; unsigned int killed = 0, dir; for (unsigned int i = 0; i <= pf_hashmask; i++) { struct pf_idhash *ih = &V_pf_idhash[i]; relock_DIOCCLRSTATES: PF_HASHROW_LOCK(ih); LIST_FOREACH(s, &ih->states, entry) { /* For floating states look at the original kif. */ kif = s->kif == V_pfi_all ? s->orig_kif : s->kif; if (kill->psk_ifname[0] && strcmp(kill->psk_ifname, kif->pfik_name)) continue; if (kill->psk_kill_match) { bzero(&match_key, sizeof(match_key)); if (s->direction == PF_OUT) { dir = PF_IN; idx = PF_SK_STACK; } else { dir = PF_OUT; idx = PF_SK_WIRE; } match_key.af = s->key[idx]->af; match_key.proto = s->key[idx]->proto; PF_ACPY(&match_key.addr[0], &s->key[idx]->addr[1], match_key.af); match_key.port[0] = s->key[idx]->port[1]; PF_ACPY(&match_key.addr[1], &s->key[idx]->addr[0], match_key.af); match_key.port[1] = s->key[idx]->port[0]; } /* * Don't send out individual * delete messages. */ s->state_flags |= PFSTATE_NOSYNC; pf_unlink_state(s); killed++; if (kill->psk_kill_match) killed += pf_kill_matching_state(&match_key, dir); goto relock_DIOCCLRSTATES; } PF_HASHROW_UNLOCK(ih); } if (V_pfsync_clear_states_ptr != NULL) V_pfsync_clear_states_ptr(V_pf_status.hostid, kill->psk_ifname); return (killed); } static void pf_killstates(struct pf_kstate_kill *kill, unsigned int *killed) { struct pf_kstate *s; if (kill->psk_pfcmp.id) { if (kill->psk_pfcmp.creatorid == 0) kill->psk_pfcmp.creatorid = V_pf_status.hostid; if ((s = pf_find_state_byid(kill->psk_pfcmp.id, kill->psk_pfcmp.creatorid))) { pf_unlink_state(s); *killed = 1; } return; } for (unsigned int i = 0; i <= pf_hashmask; i++) *killed += pf_killstates_row(kill, &V_pf_idhash[i]); return; } static int pf_killstates_nv(struct pfioc_nv *nv) { struct pf_kstate_kill kill; nvlist_t *nvl = NULL; void *nvlpacked = NULL; int error = 0; unsigned int killed = 0; #define ERROUT(x) ERROUT_FUNCTION(on_error, x) if (nv->len > pf_ioctl_maxcount) ERROUT(ENOMEM); nvlpacked = malloc(nv->len, M_NVLIST, M_WAITOK); if (nvlpacked == NULL) ERROUT(ENOMEM); error = copyin(nv->data, nvlpacked, nv->len); if (error) ERROUT(error); nvl = nvlist_unpack(nvlpacked, nv->len, 0); if (nvl == NULL) ERROUT(EBADMSG); error = pf_nvstate_kill_to_kstate_kill(nvl, &kill); if (error) ERROUT(error); pf_killstates(&kill, &killed); free(nvlpacked, M_NVLIST); nvlpacked = NULL; nvlist_destroy(nvl); nvl = nvlist_create(0); if (nvl == NULL) ERROUT(ENOMEM); nvlist_add_number(nvl, "killed", killed); nvlpacked = nvlist_pack(nvl, &nv->len); if (nvlpacked == NULL) ERROUT(ENOMEM); if (nv->size == 0) ERROUT(0); else if (nv->size < nv->len) ERROUT(ENOSPC); error = copyout(nvlpacked, nv->data, nv->len); on_error: nvlist_destroy(nvl); free(nvlpacked, M_NVLIST); return (error); } static int pf_clearstates_nv(struct pfioc_nv *nv) { struct pf_kstate_kill kill; nvlist_t *nvl = NULL; void *nvlpacked = NULL; int error = 0; unsigned int killed; #define ERROUT(x) ERROUT_FUNCTION(on_error, x) if (nv->len > pf_ioctl_maxcount) ERROUT(ENOMEM); nvlpacked = malloc(nv->len, M_NVLIST, M_WAITOK); if (nvlpacked == NULL) ERROUT(ENOMEM); error = copyin(nv->data, nvlpacked, nv->len); if (error) ERROUT(error); nvl = nvlist_unpack(nvlpacked, nv->len, 0); if (nvl == NULL) ERROUT(EBADMSG); error = pf_nvstate_kill_to_kstate_kill(nvl, &kill); if (error) ERROUT(error); killed = pf_clear_states(&kill); free(nvlpacked, M_NVLIST); nvlpacked = NULL; nvlist_destroy(nvl); nvl = nvlist_create(0); if (nvl == NULL) ERROUT(ENOMEM); nvlist_add_number(nvl, "killed", killed); nvlpacked = nvlist_pack(nvl, &nv->len); if (nvlpacked == NULL) ERROUT(ENOMEM); if (nv->size == 0) ERROUT(0); else if (nv->size < nv->len) ERROUT(ENOSPC); error = copyout(nvlpacked, nv->data, nv->len); #undef ERROUT on_error: nvlist_destroy(nvl); free(nvlpacked, M_NVLIST); return (error); } static int pf_getstate(struct pfioc_nv *nv) { nvlist_t *nvl = NULL, *nvls; void *nvlpacked = NULL; struct pf_kstate *s = NULL; int error = 0; uint64_t id, creatorid; #define ERROUT(x) ERROUT_FUNCTION(errout, x) if (nv->len > pf_ioctl_maxcount) ERROUT(ENOMEM); nvlpacked = malloc(nv->len, M_NVLIST, M_WAITOK); if (nvlpacked == NULL) ERROUT(ENOMEM); error = copyin(nv->data, nvlpacked, nv->len); if (error) ERROUT(error); nvl = nvlist_unpack(nvlpacked, nv->len, 0); if (nvl == NULL) ERROUT(EBADMSG); PFNV_CHK(pf_nvuint64(nvl, "id", &id)); PFNV_CHK(pf_nvuint64(nvl, "creatorid", &creatorid)); s = pf_find_state_byid(id, creatorid); if (s == NULL) ERROUT(ENOENT); free(nvlpacked, M_NVLIST); nvlpacked = NULL; nvlist_destroy(nvl); nvl = nvlist_create(0); if (nvl == NULL) ERROUT(ENOMEM); nvls = pf_state_to_nvstate(s); if (nvls == NULL) ERROUT(ENOMEM); nvlist_add_nvlist(nvl, "state", nvls); nvlist_destroy(nvls); nvlpacked = nvlist_pack(nvl, &nv->len); if (nvlpacked == NULL) ERROUT(ENOMEM); if (nv->size == 0) ERROUT(0); else if (nv->size < nv->len) ERROUT(ENOSPC); error = copyout(nvlpacked, nv->data, nv->len); #undef ERROUT errout: if (s != NULL) PF_STATE_UNLOCK(s); free(nvlpacked, M_NVLIST); nvlist_destroy(nvl); return (error); } /* * XXX - Check for version missmatch!!! */ /* * Duplicate pfctl -Fa operation to get rid of as much as we can. */ static int shutdown_pf(void) { int error = 0; u_int32_t t[5]; char nn = '\0'; do { if ((error = pf_begin_rules(&t[0], PF_RULESET_SCRUB, &nn)) != 0) { DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: SCRUB\n")); break; } if ((error = pf_begin_rules(&t[1], PF_RULESET_FILTER, &nn)) != 0) { DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: FILTER\n")); break; /* XXX: rollback? */ } if ((error = pf_begin_rules(&t[2], PF_RULESET_NAT, &nn)) != 0) { DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: NAT\n")); break; /* XXX: rollback? */ } if ((error = pf_begin_rules(&t[3], PF_RULESET_BINAT, &nn)) != 0) { DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: BINAT\n")); break; /* XXX: rollback? */ } if ((error = pf_begin_rules(&t[4], PF_RULESET_RDR, &nn)) != 0) { DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: RDR\n")); break; /* XXX: rollback? */ } /* XXX: these should always succeed here */ pf_commit_rules(t[0], PF_RULESET_SCRUB, &nn); pf_commit_rules(t[1], PF_RULESET_FILTER, &nn); pf_commit_rules(t[2], PF_RULESET_NAT, &nn); pf_commit_rules(t[3], PF_RULESET_BINAT, &nn); pf_commit_rules(t[4], PF_RULESET_RDR, &nn); if ((error = pf_clear_tables()) != 0) break; if ((error = pf_begin_eth(&t[0], &nn)) != 0) { DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: eth\n")); break; } pf_commit_eth(t[0], &nn); #ifdef ALTQ if ((error = pf_begin_altq(&t[0])) != 0) { DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: ALTQ\n")); break; } pf_commit_altq(t[0]); #endif pf_clear_all_states(); pf_clear_srcnodes(NULL); /* status does not use malloced mem so no need to cleanup */ /* fingerprints and interfaces have their own cleanup code */ } while(0); return (error); } static pfil_return_t pf_check_return(int chk, struct mbuf **m) { switch (chk) { case PF_PASS: if (*m == NULL) return (PFIL_CONSUMED); else return (PFIL_PASS); break; default: if (*m != NULL) { m_freem(*m); *m = NULL; } return (PFIL_DROPPED); } } static pfil_return_t pf_eth_check_in(struct mbuf **m, struct ifnet *ifp, int flags, void *ruleset __unused, struct inpcb *inp) { int chk; chk = pf_test_eth(PF_IN, flags, ifp, m, inp); return (pf_check_return(chk, m)); } static pfil_return_t pf_eth_check_out(struct mbuf **m, struct ifnet *ifp, int flags, void *ruleset __unused, struct inpcb *inp) { int chk; chk = pf_test_eth(PF_OUT, flags, ifp, m, inp); return (pf_check_return(chk, m)); } #ifdef INET static pfil_return_t pf_check_in(struct mbuf **m, struct ifnet *ifp, int flags, void *ruleset __unused, struct inpcb *inp) { int chk; chk = pf_test(PF_IN, flags, ifp, m, inp); return (pf_check_return(chk, m)); } static pfil_return_t pf_check_out(struct mbuf **m, struct ifnet *ifp, int flags, void *ruleset __unused, struct inpcb *inp) { int chk; chk = pf_test(PF_OUT, flags, ifp, m, inp); return (pf_check_return(chk, m)); } #endif #ifdef INET6 static pfil_return_t pf_check6_in(struct mbuf **m, struct ifnet *ifp, int flags, void *ruleset __unused, struct inpcb *inp) { int chk; /* * In case of loopback traffic IPv6 uses the real interface in * order to support scoped addresses. In order to support stateful * filtering we have change this to lo0 as it is the case in IPv4. */ CURVNET_SET(ifp->if_vnet); chk = pf_test6(PF_IN, flags, (*m)->m_flags & M_LOOP ? V_loif : ifp, m, inp); CURVNET_RESTORE(); return (pf_check_return(chk, m)); } static pfil_return_t pf_check6_out(struct mbuf **m, struct ifnet *ifp, int flags, void *ruleset __unused, struct inpcb *inp) { int chk; CURVNET_SET(ifp->if_vnet); chk = pf_test6(PF_OUT, flags, ifp, m, inp); CURVNET_RESTORE(); return (pf_check_return(chk, m)); } #endif /* INET6 */ VNET_DEFINE_STATIC(pfil_hook_t, pf_eth_in_hook); VNET_DEFINE_STATIC(pfil_hook_t, pf_eth_out_hook); #define V_pf_eth_in_hook VNET(pf_eth_in_hook) #define V_pf_eth_out_hook VNET(pf_eth_out_hook) #ifdef INET VNET_DEFINE_STATIC(pfil_hook_t, pf_ip4_in_hook); VNET_DEFINE_STATIC(pfil_hook_t, pf_ip4_out_hook); #define V_pf_ip4_in_hook VNET(pf_ip4_in_hook) #define V_pf_ip4_out_hook VNET(pf_ip4_out_hook) #endif #ifdef INET6 VNET_DEFINE_STATIC(pfil_hook_t, pf_ip6_in_hook); VNET_DEFINE_STATIC(pfil_hook_t, pf_ip6_out_hook); #define V_pf_ip6_in_hook VNET(pf_ip6_in_hook) #define V_pf_ip6_out_hook VNET(pf_ip6_out_hook) #endif static void hook_pf_eth(void) { struct pfil_hook_args pha; struct pfil_link_args pla; int ret __diagused; if (V_pf_pfil_eth_hooked) return; pha.pa_version = PFIL_VERSION; pha.pa_modname = "pf"; pha.pa_ruleset = NULL; pla.pa_version = PFIL_VERSION; pha.pa_type = PFIL_TYPE_ETHERNET; pha.pa_func = pf_eth_check_in; pha.pa_flags = PFIL_IN; pha.pa_rulname = "eth-in"; V_pf_eth_in_hook = pfil_add_hook(&pha); pla.pa_flags = PFIL_IN | PFIL_HEADPTR | PFIL_HOOKPTR; pla.pa_head = V_link_pfil_head; pla.pa_hook = V_pf_eth_in_hook; ret = pfil_link(&pla); MPASS(ret == 0); pha.pa_func = pf_eth_check_out; pha.pa_flags = PFIL_OUT; pha.pa_rulname = "eth-out"; V_pf_eth_out_hook = pfil_add_hook(&pha); pla.pa_flags = PFIL_OUT | PFIL_HEADPTR | PFIL_HOOKPTR; pla.pa_head = V_link_pfil_head; pla.pa_hook = V_pf_eth_out_hook; ret = pfil_link(&pla); MPASS(ret == 0); V_pf_pfil_eth_hooked = 1; } static void hook_pf(void) { struct pfil_hook_args pha; struct pfil_link_args pla; int ret; if (V_pf_pfil_hooked) return; pha.pa_version = PFIL_VERSION; pha.pa_modname = "pf"; pha.pa_ruleset = NULL; pla.pa_version = PFIL_VERSION; #ifdef INET pha.pa_type = PFIL_TYPE_IP4; pha.pa_func = pf_check_in; pha.pa_flags = PFIL_IN; pha.pa_rulname = "default-in"; V_pf_ip4_in_hook = pfil_add_hook(&pha); pla.pa_flags = PFIL_IN | PFIL_HEADPTR | PFIL_HOOKPTR; pla.pa_head = V_inet_pfil_head; pla.pa_hook = V_pf_ip4_in_hook; ret = pfil_link(&pla); MPASS(ret == 0); pha.pa_func = pf_check_out; pha.pa_flags = PFIL_OUT; pha.pa_rulname = "default-out"; V_pf_ip4_out_hook = pfil_add_hook(&pha); pla.pa_flags = PFIL_OUT | PFIL_HEADPTR | PFIL_HOOKPTR; pla.pa_head = V_inet_pfil_head; pla.pa_hook = V_pf_ip4_out_hook; ret = pfil_link(&pla); MPASS(ret == 0); #endif #ifdef INET6 pha.pa_type = PFIL_TYPE_IP6; pha.pa_func = pf_check6_in; pha.pa_flags = PFIL_IN; pha.pa_rulname = "default-in6"; V_pf_ip6_in_hook = pfil_add_hook(&pha); pla.pa_flags = PFIL_IN | PFIL_HEADPTR | PFIL_HOOKPTR; pla.pa_head = V_inet6_pfil_head; pla.pa_hook = V_pf_ip6_in_hook; ret = pfil_link(&pla); MPASS(ret == 0); pha.pa_func = pf_check6_out; pha.pa_rulname = "default-out6"; pha.pa_flags = PFIL_OUT; V_pf_ip6_out_hook = pfil_add_hook(&pha); pla.pa_flags = PFIL_OUT | PFIL_HEADPTR | PFIL_HOOKPTR; pla.pa_head = V_inet6_pfil_head; pla.pa_hook = V_pf_ip6_out_hook; ret = pfil_link(&pla); MPASS(ret == 0); #endif V_pf_pfil_hooked = 1; } static void dehook_pf_eth(void) { if (V_pf_pfil_eth_hooked == 0) return; pfil_remove_hook(V_pf_eth_in_hook); pfil_remove_hook(V_pf_eth_out_hook); V_pf_pfil_eth_hooked = 0; } static void dehook_pf(void) { if (V_pf_pfil_hooked == 0) return; #ifdef INET pfil_remove_hook(V_pf_ip4_in_hook); pfil_remove_hook(V_pf_ip4_out_hook); #endif #ifdef INET6 pfil_remove_hook(V_pf_ip6_in_hook); pfil_remove_hook(V_pf_ip6_out_hook); #endif V_pf_pfil_hooked = 0; } static void pf_load_vnet(void) { V_pf_tag_z = uma_zcreate("pf tags", sizeof(struct pf_tagname), NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0); pf_init_tagset(&V_pf_tags, &pf_rule_tag_hashsize, PF_RULE_TAG_HASH_SIZE_DEFAULT); #ifdef ALTQ pf_init_tagset(&V_pf_qids, &pf_queue_tag_hashsize, PF_QUEUE_TAG_HASH_SIZE_DEFAULT); #endif V_pf_keth = &V_pf_main_keth_anchor.ruleset; pfattach_vnet(); V_pf_vnet_active = 1; } static int pf_load(void) { int error; rm_init_flags(&pf_rules_lock, "pf rulesets", RM_RECURSE); sx_init(&pf_ioctl_lock, "pf ioctl"); sx_init(&pf_end_lock, "pf end thread"); pf_mtag_initialize(); pf_dev = make_dev(&pf_cdevsw, 0, UID_ROOT, GID_WHEEL, 0600, PF_NAME); if (pf_dev == NULL) return (ENOMEM); pf_end_threads = 0; error = kproc_create(pf_purge_thread, NULL, &pf_purge_proc, 0, 0, "pf purge"); if (error != 0) return (error); pfi_initialize(); return (0); } static void pf_unload_vnet(void) { int ret; V_pf_vnet_active = 0; V_pf_status.running = 0; dehook_pf(); dehook_pf_eth(); PF_RULES_WLOCK(); pf_syncookies_cleanup(); shutdown_pf(); PF_RULES_WUNLOCK(); ret = swi_remove(V_pf_swi_cookie); MPASS(ret == 0); ret = intr_event_destroy(V_pf_swi_ie); MPASS(ret == 0); pf_unload_vnet_purge(); pf_normalize_cleanup(); PF_RULES_WLOCK(); pfi_cleanup_vnet(); PF_RULES_WUNLOCK(); pfr_cleanup(); pf_osfp_flush(); pf_cleanup(); if (IS_DEFAULT_VNET(curvnet)) pf_mtag_cleanup(); pf_cleanup_tagset(&V_pf_tags); #ifdef ALTQ pf_cleanup_tagset(&V_pf_qids); #endif uma_zdestroy(V_pf_tag_z); #ifdef PF_WANT_32_TO_64_COUNTER PF_RULES_WLOCK(); LIST_REMOVE(V_pf_kifmarker, pfik_allkiflist); MPASS(LIST_EMPTY(&V_pf_allkiflist)); MPASS(V_pf_allkifcount == 0); LIST_REMOVE(&V_pf_default_rule, allrulelist); V_pf_allrulecount--; LIST_REMOVE(V_pf_rulemarker, allrulelist); /* * There are known pf rule leaks when running the test suite. */ #ifdef notyet MPASS(LIST_EMPTY(&V_pf_allrulelist)); MPASS(V_pf_allrulecount == 0); #endif PF_RULES_WUNLOCK(); free(V_pf_kifmarker, PFI_MTYPE); free(V_pf_rulemarker, M_PFRULE); #endif /* Free counters last as we updated them during shutdown. */ pf_counter_u64_deinit(&V_pf_default_rule.evaluations); for (int i = 0; i < 2; i++) { pf_counter_u64_deinit(&V_pf_default_rule.packets[i]); pf_counter_u64_deinit(&V_pf_default_rule.bytes[i]); } counter_u64_free(V_pf_default_rule.states_cur); counter_u64_free(V_pf_default_rule.states_tot); counter_u64_free(V_pf_default_rule.src_nodes); for (int i = 0; i < PFRES_MAX; i++) counter_u64_free(V_pf_status.counters[i]); for (int i = 0; i < KLCNT_MAX; i++) counter_u64_free(V_pf_status.lcounters[i]); for (int i = 0; i < FCNT_MAX; i++) pf_counter_u64_deinit(&V_pf_status.fcounters[i]); for (int i = 0; i < SCNT_MAX; i++) counter_u64_free(V_pf_status.scounters[i]); } static void pf_unload(void) { sx_xlock(&pf_end_lock); pf_end_threads = 1; while (pf_end_threads < 2) { wakeup_one(pf_purge_thread); sx_sleep(pf_purge_proc, &pf_end_lock, 0, "pftmo", 0); } sx_xunlock(&pf_end_lock); if (pf_dev != NULL) destroy_dev(pf_dev); pfi_cleanup(); rm_destroy(&pf_rules_lock); sx_destroy(&pf_ioctl_lock); sx_destroy(&pf_end_lock); } static void vnet_pf_init(void *unused __unused) { pf_load_vnet(); } VNET_SYSINIT(vnet_pf_init, SI_SUB_PROTO_FIREWALL, SI_ORDER_THIRD, vnet_pf_init, NULL); static void vnet_pf_uninit(const void *unused __unused) { pf_unload_vnet(); } SYSUNINIT(pf_unload, SI_SUB_PROTO_FIREWALL, SI_ORDER_SECOND, pf_unload, NULL); VNET_SYSUNINIT(vnet_pf_uninit, SI_SUB_PROTO_FIREWALL, SI_ORDER_THIRD, vnet_pf_uninit, NULL); static int pf_modevent(module_t mod, int type, void *data) { int error = 0; switch(type) { case MOD_LOAD: error = pf_load(); break; case MOD_UNLOAD: /* Handled in SYSUNINIT(pf_unload) to ensure it's done after * the vnet_pf_uninit()s */ break; default: error = EINVAL; break; } return (error); } static moduledata_t pf_mod = { "pf", pf_modevent, 0 }; DECLARE_MODULE(pf, pf_mod, SI_SUB_PROTO_FIREWALL, SI_ORDER_SECOND); MODULE_VERSION(pf, PF_MODVER);