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sbin/ipfw15/ipfw2.h

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/*-
* Copyright (c) 2002-2003 Luigi Rizzo
* Copyright (c) 1996 Alex Nash, Paul Traina, Poul-Henning Kamp
* Copyright (c) 1994 Ugen J.S.Antsilevich
*
* Idea and grammar partially left from:
* Copyright (c) 1993 Daniel Boulet
*
* Redistribution and use in source forms, with and without modification,
* are permitted provided that this entire comment appears intact.
*
* Redistribution in binary form may occur without any restrictions.
* Obviously, it would be nice if you gave credit where credit is due
* but requiring it would be too onerous.
*
* This software is provided ``AS IS'' without any warranties of any kind.
*
* NEW command line interface for IP firewall facility
*/
enum cmdline_prog {
cmdline_prog_ipfw,
cmdline_prog_dnctl
};
/*
* Options that can be set on the command line.
* When reading commands from a file, a subset of the options can also
* be applied globally by specifying them before the file name.
* After that, each line can contain its own option that changes
* the global value.
* XXX The context is not restored after each line.
*/
struct cmdline_opts {
/* boolean options: */
int do_value_as_ip; /* show table value as IP */
int do_resolv; /* try to resolve all ip to names */
int do_time; /* Show time stamps */
int do_quiet; /* Be quiet in add and flush */
int do_pipe; /* this cmd refers to a pipe/queue/sched */
int do_nat; /* this cmd refers to a nat config */
int do_compact; /* show rules in compact mode */
int do_force; /* do not ask for confirmation */
int show_sets; /* display the set each rule belongs to */
int test_only; /* only check syntax */
int comment_only; /* only print action and comment */
int verbose; /* be verbose on some commands */
int debug_only; /* output ioctl i/o on stdout */
/* The options below can have multiple values. */
int do_dynamic; /* 1 - display dynamic rules */
/* 2 - display/delete only dynamic rules */
int do_sort; /* field to sort results (0 = no) */
/* valid fields are 1 and above */
uint32_t use_set; /* work with specified set number */
/* 0 means all sets, otherwise apply to set use_set - 1 */
enum cmdline_prog prog; /* Are we ipfw or dnctl? */
};
int is_ipfw(void);
enum {
TIMESTAMP_NONE = 0,
TIMESTAMP_STRING,
TIMESTAMP_NUMERIC,
};
extern struct cmdline_opts g_co;
/*
* _s_x is a structure that stores a string <-> token pairs, used in
* various places in the parser. Entries are stored in arrays,
* with an entry with s=NULL as terminator.
* The search routines are match_token() and match_value().
* Often, an element with x=0 contains an error string.
*
*/
struct _s_x {
char const *s;
int x;
};
extern struct _s_x f_ipdscp[];
enum tokens {
TOK_NULL=0,
TOK_OR,
TOK_NOT,
TOK_STARTBRACE,
TOK_ENDBRACE,
TOK_ABORT6,
TOK_ABORT,
TOK_ACCEPT,
TOK_COUNT,
TOK_EACTION,
TOK_PIPE,
TOK_LINK,
TOK_QUEUE,
TOK_FLOWSET,
TOK_SCHED,
TOK_DIVERT,
TOK_TEE,
TOK_NETGRAPH,
TOK_NGTEE,
TOK_FORWARD,
TOK_SKIPTO,
TOK_DENY,
TOK_REJECT,
TOK_RESET,
TOK_UNREACH,
TOK_CHECKSTATE,
TOK_NAT,
TOK_REASS,
TOK_CALL,
TOK_RETURN,
TOK_ALTQ,
TOK_LOG,
TOK_TAG,
TOK_UNTAG,
TOK_TAGGED,
TOK_UID,
TOK_GID,
TOK_JAIL,
TOK_IN,
TOK_LIMIT,
TOK_SETLIMIT,
TOK_KEEPSTATE,
TOK_RECORDSTATE,
TOK_LAYER2,
TOK_OUT,
TOK_DIVERTED,
TOK_DIVERTEDLOOPBACK,
TOK_DIVERTEDOUTPUT,
TOK_XMIT,
TOK_RECV,
TOK_VIA,
TOK_FRAG,
TOK_IPOPTS,
TOK_IPLEN,
TOK_IPID,
TOK_IPPRECEDENCE,
TOK_DSCP,
TOK_IPTOS,
TOK_IPTTL,
TOK_IPVER,
TOK_ESTAB,
TOK_SETUP,
TOK_TCPDATALEN,
TOK_TCPFLAGS,
TOK_TCPOPTS,
TOK_TCPSEQ,
TOK_TCPACK,
TOK_TCPMSS,
TOK_TCPWIN,
TOK_ICMPTYPES,
TOK_MAC,
TOK_MACTYPE,
TOK_VERREVPATH,
TOK_VERSRCREACH,
TOK_ANTISPOOF,
TOK_IPSEC,
TOK_COMMENT,
TOK_PLR,
TOK_NOERROR,
TOK_BUCKETS,
TOK_DSTIP,
TOK_SRCIP,
TOK_DSTPORT,
TOK_SRCPORT,
TOK_DSTMAC,
TOK_SRCMAC,
TOK_ALL,
TOK_MASK,
TOK_FLOW_MASK,
TOK_SCHED_MASK,
TOK_BW,
TOK_DELAY,
TOK_PROFILE,
TOK_BURST,
TOK_RED,
TOK_GRED,
TOK_ECN,
TOK_DROPTAIL,
TOK_PROTO,
#ifdef NEW_AQM
/* AQM tokens*/
TOK_NO_ECN,
TOK_CODEL,
TOK_FQ_CODEL,
TOK_TARGET,
TOK_INTERVAL,
TOK_FLOWS,
TOK_QUANTUM,
TOK_PIE,
TOK_FQ_PIE,
TOK_TUPDATE,
TOK_MAX_BURST,
TOK_MAX_ECNTH,
TOK_ALPHA,
TOK_BETA,
TOK_CAPDROP,
TOK_NO_CAPDROP,
TOK_ONOFF,
TOK_DRE,
TOK_TS,
TOK_DERAND,
TOK_NO_DERAND,
#endif
/* dummynet tokens */
TOK_WEIGHT,
TOK_LMAX,
TOK_PRI,
TOK_TYPE,
TOK_SLOTSIZE,
TOK_IP,
TOK_IF,
TOK_ALOG,
TOK_DENY_INC,
TOK_SAME_PORTS,
TOK_UNREG_ONLY,
TOK_UNREG_CGN,
TOK_SKIP_GLOBAL,
TOK_RESET_ADDR,
TOK_ALIAS_REV,
TOK_PROXY_ONLY,
TOK_REDIR_ADDR,
TOK_REDIR_PORT,
TOK_REDIR_PROTO,
TOK_IPV6,
TOK_FLOWID,
TOK_ICMP6TYPES,
TOK_EXT6HDR,
TOK_DSTIP6,
TOK_SRCIP6,
TOK_IPV4,
TOK_UNREACH6,
TOK_RESET6,
TOK_FIB,
TOK_SETFIB,
TOK_LOOKUP,
TOK_SOCKARG,
TOK_SETDSCP,
TOK_FLOW,
TOK_IFLIST,
/* Table tokens */
TOK_CREATE,
TOK_DESTROY,
TOK_LIST,
TOK_INFO,
TOK_DETAIL,
TOK_MODIFY,
TOK_FLUSH,
TOK_SWAP,
TOK_ADD,
TOK_DEL,
TOK_VALTYPE,
TOK_ALGO,
TOK_TALIST,
TOK_ATOMIC,
TOK_LOCK,
TOK_UNLOCK,
TOK_VLIST,
TOK_OLIST,
TOK_MONITOR,
TOK_MISSING,
TOK_ORFLUSH,
/* NAT64 tokens */
TOK_NAT64STL,
TOK_NAT64LSN,
TOK_STATS,
TOK_STATES,
TOK_CONFIG,
TOK_TABLE4,
TOK_TABLE6,
TOK_PREFIX4,
TOK_PREFIX6,
TOK_AGG_LEN,
TOK_AGG_COUNT,
TOK_MAX_PORTS,
TOK_STATES_CHUNKS,
TOK_JMAXLEN,
TOK_PORT_RANGE,
TOK_PORT_ALIAS,
TOK_HOST_DEL_AGE,
TOK_PG_DEL_AGE,
TOK_TCP_SYN_AGE,
TOK_TCP_CLOSE_AGE,
TOK_TCP_EST_AGE,
TOK_UDP_AGE,
TOK_ICMP_AGE,
TOK_LOGOFF,
TOK_PRIVATE,
TOK_PRIVATEOFF,
TOK_SWAPCONF,
TOK_SWAPCONFOFF,
/* NAT64 CLAT tokens */
TOK_NAT64CLAT,
TOK_PLAT_PREFIX,
TOK_CLAT_PREFIX,
/* NPTv6 tokens */
TOK_NPTV6,
TOK_INTPREFIX,
TOK_EXTPREFIX,
TOK_PREFIXLEN,
TOK_EXTIF,
TOK_TCPSETMSS,
TOK_MARK,
TOK_SETMARK,
TOK_SKIPACTION,
TOK_UDP_EIM,
};
/*
* the following macro returns an error message if we run out of
* arguments.
*/
#define NEED(_p, msg) {if (!_p) errx(EX_USAGE, msg);}
#define NEED1(msg) {if (!(*av)) errx(EX_USAGE, msg);}
struct buf_pr {
char *buf; /* allocated buffer */
char *ptr; /* current pointer */
size_t size; /* total buffer size */
size_t avail; /* available storage */
size_t needed; /* length needed */
};
int pr_u64(struct buf_pr *bp, void *pd, int width);
int bp_alloc(struct buf_pr *b, size_t size);
void bp_free(struct buf_pr *b);
int bprintf(struct buf_pr *b, const char *format, ...) __printflike(2, 3);
/* memory allocation support */
void *safe_calloc(size_t number, size_t size);
void *safe_realloc(void *ptr, size_t size);
/* string comparison functions used for historical compatibility */
int _substrcmp(const char *str1, const char* str2);
int _substrcmp2(const char *str1, const char* str2, const char* str3);
int stringnum_cmp(const char *a, const char *b);
/* utility functions */
int match_token(struct _s_x *table, const char *string);
int match_token_relaxed(struct _s_x *table, const char *string);
int get_token(struct _s_x *table, const char *string, const char *errbase);
char const *match_value(struct _s_x *p, int value);
size_t concat_tokens(char *buf, size_t bufsize, struct _s_x *table,
const char *delimiter);
int fill_flags(struct _s_x *flags, char *p, char **e, uint32_t *set,
uint32_t *clear);
void print_flags_buffer(char *buf, size_t sz, struct _s_x *list, uint32_t set);
struct _ip_fw3_opheader;
int do_cmd(int optname, void *optval, uintptr_t optlen);
int do_set3(int optname, struct _ip_fw3_opheader *op3, size_t optlen);
int do_get3(int optname, struct _ip_fw3_opheader *op3, size_t *optlen);
struct in6_addr;
void n2mask(struct in6_addr *mask, int n);
int contigmask(const uint8_t *p, int len);
/*
* Forward declarations to avoid include way too many headers.
* C does not allow duplicated typedefs, so we use the base struct
* that the typedef points to.
* Should the typedefs use a different type, the compiler will
* still detect the change when compiling the body of the
* functions involved, so we do not lose error checking.
*/
struct _ipfw_insn;
struct _ipfw_insn_altq;
struct _ipfw_insn_u32;
struct _ipfw_insn_ip6;
struct _ipfw_insn_icmp6;
/*
* The reserved set numer. This is a constant in ip_fw.h
* but we store it in a variable so other files do not depend
* in that header just for one constant.
*/
extern int resvd_set_number;
/* first-level command handlers */
void ipfw_add(char *av[]);
void ipfw_show_nat(int ac, char **av);
int ipfw_delete_nat(int i);
void ipfw_config_pipe(int ac, char **av);
void ipfw_config_nat(int ac, char **av);
void ipfw_sets_handler(char *av[]);
void ipfw_table_handler(int ac, char *av[]);
void ipfw_sysctl_handler(char *av[], int which);
void ipfw_delete(char *av[]);
void ipfw_flush(int force);
void ipfw_zero(int ac, char *av[], int optname);
void ipfw_list(int ac, char *av[], int show_counters);
void ipfw_internal_handler(int ac, char *av[]);
void ipfw_nat64clat_handler(int ac, char *av[]);
void ipfw_nat64lsn_handler(int ac, char *av[]);
void ipfw_nat64stl_handler(int ac, char *av[]);
void ipfw_nptv6_handler(int ac, char *av[]);
int ipfw_check_object_name(const char *name);
int ipfw_check_nat64prefix(const struct in6_addr *prefix, int length);
#ifdef PF
/* altq.c */
void altq_set_enabled(int enabled);
u_int32_t altq_name_to_qid(const char *name);
void print_altq_cmd(struct buf_pr *bp, const struct _ipfw_insn_altq *altqptr);
#else
#define NO_ALTQ
#endif
/* dummynet.c */
void dummynet_list(int ac, char *av[], int show_counters);
void dummynet_flush(void);
int ipfw_delete_pipe(int pipe_or_queue, int n);
/* ipv6.c */
void print_unreach6_code(struct buf_pr *bp, uint16_t code);
void print_ip6(struct buf_pr *bp, const struct _ipfw_insn_ip6 *cmd);
void print_flow6id(struct buf_pr *bp, const struct _ipfw_insn_u32 *cmd);
void print_icmp6types(struct buf_pr *bp, const struct _ipfw_insn_u32 *cmd);
void print_ext6hdr(struct buf_pr *bp, const struct _ipfw_insn *cmd);
struct tidx;
struct _ipfw_insn *add_srcip6(struct _ipfw_insn *cmd, char *av, int cblen,
struct tidx *tstate);
struct _ipfw_insn *add_dstip6(struct _ipfw_insn *cmd, char *av, int cblen,
struct tidx *tstate);
void fill_flow6(struct _ipfw_insn_u32 *cmd, char *av, int cblen);
uint16_t get_unreach6_code(const char *str);
void fill_icmp6types(struct _ipfw_insn_icmp6 *cmd, char *av, int cblen);
int fill_ext6hdr(struct _ipfw_insn *cmd, char *av);
/* ipfw2.c */
void bp_flush(struct buf_pr *b);
void fill_table(struct _ipfw_insn *cmd, char *av, uint8_t opcode,
struct tidx *tstate);
/* tables.c */
struct _ipfw_obj_ctlv;
struct _ipfw_obj_ntlv;
int table_check_name(const char *tablename);
void ipfw_list_ta(int ac, char *av[]);
void ipfw_list_values(int ac, char *av[]);
void table_fill_ntlv(struct _ipfw_obj_ntlv *ntlv, const char *name,
uint8_t set, uint32_t uidx);