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usr.bin/netstat/common.c
- This file was added.
/*- | |||||
* SPDX-License-Identifier: BSD-3-Clause | |||||
* | |||||
* Copyright (c) 1983, 1988, 1993 | |||||
* The Regents of the University of California. All rights reserved. | |||||
* | |||||
* Redistribution and use in source and binary forms, with or without | |||||
* modification, are permitted provided that the following conditions | |||||
* are met: | |||||
* 1. Redistributions of source code must retain the above copyright | |||||
* notice, this list of conditions and the following disclaimer. | |||||
* 2. 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. | |||||
* 3. Neither the name of the University nor the names of its contributors | |||||
* may be used to endorse or promote products derived from this software | |||||
* without specific prior written permission. | |||||
* | |||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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 <sys/cdefs.h> | |||||
__FBSDID("$FreeBSD$"); | |||||
#include <sys/param.h> | |||||
#include <sys/protosw.h> | |||||
#include <sys/socket.h> | |||||
#include <sys/socketvar.h> | |||||
#include <sys/sysctl.h> | |||||
#include <sys/time.h> | |||||
#include <net/if.h> | |||||
#include <net/if_dl.h> | |||||
#include <arpa/inet.h> | |||||
#include <ifaddrs.h> | |||||
#include <libutil.h> | |||||
#include <netdb.h> | |||||
#include <stdbool.h> | |||||
#include <stdint.h> | |||||
#include <stdio.h> | |||||
#include <stdlib.h> | |||||
#include <stdbool.h> | |||||
#include <string.h> | |||||
#include <sysexits.h> | |||||
#include <unistd.h> | |||||
#include <err.h> | |||||
#include <libxo/xo.h> | |||||
#include "netstat.h" | |||||
#include "common.h" | |||||
const char * | |||||
fmt_flags(const struct bits *p, int f) | |||||
{ | |||||
static char name[33]; | |||||
char *flags; | |||||
for (flags = name; p->b_mask; p++) | |||||
if (p->b_mask & f) | |||||
*flags++ = p->b_val; | |||||
*flags = '\0'; | |||||
return (name); | |||||
} | |||||
void | |||||
print_flags_generic(int flags, const struct bits *pbits, const char *format, | |||||
const char *tag_name) | |||||
{ | |||||
const struct bits *p; | |||||
char tag_fmt[64]; | |||||
xo_emit(format, fmt_flags(pbits, flags)); | |||||
snprintf(tag_fmt, sizeof(tag_fmt), "{le:%s/%%s}", tag_name); | |||||
xo_open_list(tag_name); | |||||
for (p = pbits; p->b_mask; p++) | |||||
if (p->b_mask & flags) | |||||
xo_emit(tag_fmt, p->b_name); | |||||
xo_close_list(tag_name); | |||||
} | |||||
struct ifmap_entry * | |||||
prepare_ifmap(size_t *pifmap_size) | |||||
{ | |||||
int ifindex = 0, size; | |||||
struct ifaddrs *ifap, *ifa; | |||||
struct sockaddr_dl *sdl; | |||||
struct ifmap_entry *ifmap = NULL; | |||||
int ifmap_size = 0; | |||||
/* | |||||
* Retrieve interface list at first | |||||
* since we need #ifindex -> if_xname match | |||||
*/ | |||||
if (getifaddrs(&ifap) != 0) | |||||
err(EX_OSERR, "getifaddrs"); | |||||
for (ifa = ifap; ifa; ifa = ifa->ifa_next) { | |||||
if (ifa->ifa_addr->sa_family != AF_LINK) | |||||
continue; | |||||
sdl = (struct sockaddr_dl *)ifa->ifa_addr; | |||||
ifindex = sdl->sdl_index; | |||||
if (ifindex >= ifmap_size) { | |||||
size = roundup(ifindex + 1, 32) * | |||||
sizeof(struct ifmap_entry); | |||||
if ((ifmap = realloc(ifmap, size)) == NULL) | |||||
errx(2, "realloc(%d) failed", size); | |||||
memset(&ifmap[ifmap_size], 0, | |||||
size - ifmap_size * | |||||
sizeof(struct ifmap_entry)); | |||||
ifmap_size = roundup(ifindex + 1, 32); | |||||
} | |||||
if (*ifmap[ifindex].ifname != '\0') | |||||
continue; | |||||
strlcpy(ifmap[ifindex].ifname, ifa->ifa_name, IFNAMSIZ); | |||||
} | |||||
freeifaddrs(ifap); | |||||
*pifmap_size = ifmap_size; | |||||
return (ifmap); | |||||
} | |||||