diff options
Diffstat (limited to 'ip/ipxfrm.c')
| -rw-r--r-- | ip/ipxfrm.c | 1553 |
1 files changed, 1553 insertions, 0 deletions
diff --git a/ip/ipxfrm.c b/ip/ipxfrm.c new file mode 100644 index 0000000..b78c712 --- /dev/null +++ b/ip/ipxfrm.c @@ -0,0 +1,1553 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright (C)2004 USAGI/WIDE Project + * + * based on ip.c, iproute.c + * + * Authors: + * Masahide NAKAMURA @USAGI + */ + +#include <alloca.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/types.h> +#include <sys/socket.h> +#include <time.h> +#include <netdb.h> +#include <linux/netlink.h> +#include <linux/rtnetlink.h> +#include <linux/udp.h> + +#include "utils.h" +#include "xfrm.h" +#include "ip_common.h" + +#define STRBUF_SIZE (128) + +struct xfrm_filter filter; + +static void usage(void) __attribute__((noreturn)); + +static void usage(void) +{ + fprintf(stderr, + "Usage: ip xfrm XFRM-OBJECT { COMMAND | help }\n" + "where XFRM-OBJECT := state | policy | monitor\n"); + exit(-1); +} + +/* This is based on utils.c(inet_addr_match) */ +int xfrm_addr_match(xfrm_address_t *x1, xfrm_address_t *x2, int bits) +{ + __u32 *a1 = (__u32 *)x1; + __u32 *a2 = (__u32 *)x2; + int words = bits >> 0x05; + + bits &= 0x1f; + + if (words) + if (memcmp(a1, a2, words << 2)) + return -1; + + if (bits) { + __u32 w1, w2; + __u32 mask; + + w1 = a1[words]; + w2 = a2[words]; + + mask = htonl((0xffffffff) << (0x20 - bits)); + + if ((w1 ^ w2) & mask) + return 1; + } + + return 0; +} + +int xfrm_xfrmproto_is_ipsec(__u8 proto) +{ + return (proto == IPPROTO_ESP || + proto == IPPROTO_AH || + proto == IPPROTO_COMP); +} + +int xfrm_xfrmproto_is_ro(__u8 proto) +{ + return (proto == IPPROTO_ROUTING || + proto == IPPROTO_DSTOPTS); +} + +struct typeent { + const char *t_name; + int t_type; +}; + +static const struct typeent xfrmproto_types[] = { + { "esp", IPPROTO_ESP }, { "ah", IPPROTO_AH }, { "comp", IPPROTO_COMP }, + { "route2", IPPROTO_ROUTING }, { "hao", IPPROTO_DSTOPTS }, + { "ipsec-any", IPSEC_PROTO_ANY }, + { NULL, -1 } +}; + +int xfrm_xfrmproto_getbyname(char *name) +{ + int i; + + for (i = 0; ; i++) { + const struct typeent *t = &xfrmproto_types[i]; + + if (!t->t_name || t->t_type == -1) + break; + + if (strcmp(t->t_name, name) == 0) + return t->t_type; + } + + return -1; +} + +const char *strxf_xfrmproto(__u8 proto) +{ + static char str[16]; + int i; + + for (i = 0; ; i++) { + const struct typeent *t = &xfrmproto_types[i]; + + if (!t->t_name || t->t_type == -1) + break; + + if (t->t_type == proto) + return t->t_name; + } + + sprintf(str, "%u", proto); + return str; +} + +static const struct typeent algo_types[] = { + { "enc", XFRMA_ALG_CRYPT }, { "auth", XFRMA_ALG_AUTH }, + { "comp", XFRMA_ALG_COMP }, { "aead", XFRMA_ALG_AEAD }, + { "auth-trunc", XFRMA_ALG_AUTH_TRUNC }, + { NULL, -1 } +}; + +int xfrm_algotype_getbyname(char *name) +{ + int i; + + for (i = 0; ; i++) { + const struct typeent *t = &algo_types[i]; + + if (!t->t_name || t->t_type == -1) + break; + + if (strcmp(t->t_name, name) == 0) + return t->t_type; + } + + return -1; +} + +const char *strxf_algotype(int type) +{ + static char str[32]; + int i; + + for (i = 0; ; i++) { + const struct typeent *t = &algo_types[i]; + + if (!t->t_name || t->t_type == -1) + break; + + if (t->t_type == type) + return t->t_name; + } + + sprintf(str, "%d", type); + return str; +} + +static const char *strxf_mask8(__u8 mask) +{ + static char str[16]; + const int sn = sizeof(mask) * 8 - 1; + __u8 b; + int i = 0; + + for (b = (1 << sn); b > 0; b >>= 1) + str[i++] = ((b & mask) ? '1' : '0'); + str[i] = '\0'; + + return str; +} + +const char *strxf_mask32(__u32 mask) +{ + static char str[16]; + + sprintf(str, "%.8x", mask); + + return str; +} + +static const char *strxf_share(__u8 share) +{ + static char str[32]; + + switch (share) { + case XFRM_SHARE_ANY: + strcpy(str, "any"); + break; + case XFRM_SHARE_SESSION: + strcpy(str, "session"); + break; + case XFRM_SHARE_USER: + strcpy(str, "user"); + break; + case XFRM_SHARE_UNIQUE: + strcpy(str, "unique"); + break; + default: + sprintf(str, "%u", share); + break; + } + + return str; +} + +const char *strxf_proto(__u8 proto) +{ + static char buf[32]; + struct protoent *pp; + const char *p; + + pp = getprotobynumber(proto); + if (pp) + p = pp->p_name; + else { + sprintf(buf, "%u", proto); + p = buf; + } + + return p; +} + +const char *strxf_ptype(__u8 ptype) +{ + static char str[16]; + + switch (ptype) { + case XFRM_POLICY_TYPE_MAIN: + strcpy(str, "main"); + break; + case XFRM_POLICY_TYPE_SUB: + strcpy(str, "sub"); + break; + default: + sprintf(str, "%u", ptype); + break; + } + + return str; +} + +static void xfrm_id_info_print(xfrm_address_t *saddr, struct xfrm_id *id, + __u8 mode, __u32 reqid, __u16 family, int force_spi, + FILE *fp, const char *prefix, const char *title) +{ + if (title) + fputs(title, fp); + + fprintf(fp, "src %s ", rt_addr_n2a(family, sizeof(*saddr), saddr)); + fprintf(fp, "dst %s", rt_addr_n2a(family, sizeof(id->daddr), &id->daddr)); + fprintf(fp, "%s", _SL_); + + if (prefix) + fputs(prefix, fp); + fprintf(fp, "\t"); + + fprintf(fp, "proto %s ", strxf_xfrmproto(id->proto)); + + if (show_stats > 0 || force_spi || id->spi) { + __u32 spi = ntohl(id->spi); + + fprintf(fp, "spi 0x%08x", spi); + if (show_stats > 0) + fprintf(fp, "(%u)", spi); + fprintf(fp, " "); + } + + fprintf(fp, "reqid %u", reqid); + if (show_stats > 0) + fprintf(fp, "(0x%08x)", reqid); + fprintf(fp, " "); + + fprintf(fp, "mode "); + switch (mode) { + case XFRM_MODE_TRANSPORT: + fprintf(fp, "transport"); + break; + case XFRM_MODE_TUNNEL: + fprintf(fp, "tunnel"); + break; + case XFRM_MODE_ROUTEOPTIMIZATION: + fprintf(fp, "ro"); + break; + case XFRM_MODE_IN_TRIGGER: + fprintf(fp, "in_trigger"); + break; + case XFRM_MODE_BEET: + fprintf(fp, "beet"); + break; + default: + fprintf(fp, "%u", mode); + break; + } + fprintf(fp, "%s", _SL_); +} + +static const char *strxf_limit(__u64 limit) +{ + static char str[32]; + + if (limit == XFRM_INF) + strcpy(str, "(INF)"); + else + sprintf(str, "%llu", (unsigned long long) limit); + + return str; +} + +static void xfrm_stats_print(struct xfrm_stats *s, FILE *fp, + const char *prefix) +{ + if (prefix) + fputs(prefix, fp); + fprintf(fp, "stats:%s", _SL_); + + if (prefix) + fputs(prefix, fp); + fprintf(fp, " replay-window %u replay %u failed %u%s", + s->replay_window, s->replay, s->integrity_failed, _SL_); +} + +static const char *strxf_time(__u64 time) +{ + static char str[32]; + + if (time == 0) + strcpy(str, "-"); + else { + time_t t; + struct tm *tp; + + /* XXX: treat time in the same manner of kernel's + * net/xfrm/xfrm_{user,state}.c + */ + t = (long)time; + tp = localtime(&t); + + strftime(str, sizeof(str), "%Y-%m-%d %T", tp); + } + + return str; +} + +static void xfrm_lifetime_print(struct xfrm_lifetime_cfg *cfg, + struct xfrm_lifetime_cur *cur, + FILE *fp, const char *prefix) +{ + if (cfg) { + if (prefix) + fputs(prefix, fp); + fprintf(fp, "lifetime config:%s", _SL_); + + if (prefix) + fputs(prefix, fp); + fprintf(fp, " limit: soft %s(bytes),", + strxf_limit(cfg->soft_byte_limit)); + fprintf(fp, " hard %s(bytes)%s", + strxf_limit(cfg->hard_byte_limit), _SL_); + + if (prefix) + fputs(prefix, fp); + fprintf(fp, " limit: soft %s(packets),", + strxf_limit(cfg->soft_packet_limit)); + fprintf(fp, " hard %s(packets)%s", + strxf_limit(cfg->hard_packet_limit), _SL_); + + if (prefix) + fputs(prefix, fp); + fprintf(fp, " expire add: soft %llu(sec), hard %llu(sec)%s", + (unsigned long long) cfg->soft_add_expires_seconds, + (unsigned long long) cfg->hard_add_expires_seconds, + _SL_); + + if (prefix) + fputs(prefix, fp); + fprintf(fp, " expire use: soft %llu(sec), hard %llu(sec)%s", + (unsigned long long) cfg->soft_use_expires_seconds, + (unsigned long long) cfg->hard_use_expires_seconds, + _SL_); + } + if (cur) { + if (prefix) + fputs(prefix, fp); + fprintf(fp, "lifetime current:%s", _SL_); + + if (prefix) + fputs(prefix, fp); + fprintf(fp, " %llu(bytes), %llu(packets)%s", + (unsigned long long) cur->bytes, + (unsigned long long) cur->packets, + _SL_); + + if (prefix) + fputs(prefix, fp); + fprintf(fp, " add %s ", strxf_time(cur->add_time)); + fprintf(fp, "use %s%s", strxf_time(cur->use_time), _SL_); + } +} + +void xfrm_selector_print(struct xfrm_selector *sel, __u16 family, + FILE *fp, const char *prefix) +{ + __u16 f; + + f = sel->family; + if (f == AF_UNSPEC) + f = family; + if (f == AF_UNSPEC) + f = preferred_family; + + if (prefix) + fputs(prefix, fp); + + fprintf(fp, "src %s/%u ", + rt_addr_n2a(f, sizeof(sel->saddr), &sel->saddr), + sel->prefixlen_s); + + fprintf(fp, "dst %s/%u ", + rt_addr_n2a(f, sizeof(sel->daddr), &sel->daddr), + sel->prefixlen_d); + + if (sel->proto) + fprintf(fp, "proto %s ", strxf_proto(sel->proto)); + switch (sel->proto) { + case IPPROTO_TCP: + case IPPROTO_UDP: + case IPPROTO_SCTP: + case IPPROTO_DCCP: + default: /* XXX */ + if (sel->sport_mask) + fprintf(fp, "sport %u ", ntohs(sel->sport)); + if (sel->dport_mask) + fprintf(fp, "dport %u ", ntohs(sel->dport)); + break; + case IPPROTO_ICMP: + case IPPROTO_ICMPV6: + /* type/code is stored at sport/dport in selector */ + if (sel->sport_mask) + fprintf(fp, "type %u ", ntohs(sel->sport)); + if (sel->dport_mask) + fprintf(fp, "code %u ", ntohs(sel->dport)); + break; + case IPPROTO_GRE: + if (sel->sport_mask || sel->dport_mask) + fprintf(fp, "key %u ", + (((__u32)ntohs(sel->sport)) << 16) + + ntohs(sel->dport)); + break; + case IPPROTO_MH: + if (sel->sport_mask) + fprintf(fp, "type %u ", ntohs(sel->sport)); + if (sel->dport_mask) { + if (show_stats > 0) + fprintf(fp, "(dport) 0x%.4x ", sel->dport); + } + break; + } + + if (sel->ifindex > 0) + fprintf(fp, "dev %s ", ll_index_to_name(sel->ifindex)); + + if (show_stats > 0) + fprintf(fp, "uid %u", sel->user); + + fprintf(fp, "%s", _SL_); +} + +static void __xfrm_algo_print(struct xfrm_algo *algo, int type, int len, + FILE *fp, const char *prefix, int newline, + bool nokeys) +{ + int keylen; + int i; + + if (prefix) + fputs(prefix, fp); + + fprintf(fp, "%s ", strxf_algotype(type)); + + if (len < sizeof(*algo)) { + fprintf(fp, "(ERROR truncated)"); + goto fin; + } + len -= sizeof(*algo); + + fprintf(fp, "%s ", algo->alg_name); + + keylen = algo->alg_key_len / 8; + if (len < keylen) { + fprintf(fp, "(ERROR truncated)"); + goto fin; + } + + if (nokeys) + fprintf(fp, "<<Keys hidden>>"); + else if (keylen > 0) { + fprintf(fp, "0x"); + for (i = 0; i < keylen; i++) + fprintf(fp, "%.2x", (unsigned char)algo->alg_key[i]); + + if (show_stats > 0) + fprintf(fp, " (%d bits)", algo->alg_key_len); + } + + fin: + if (newline) + fprintf(fp, "%s", _SL_); +} + +static inline void xfrm_algo_print(struct xfrm_algo *algo, int type, int len, + FILE *fp, const char *prefix, bool nokeys) +{ + return __xfrm_algo_print(algo, type, len, fp, prefix, 1, nokeys); +} + +static void xfrm_aead_print(struct xfrm_algo_aead *algo, int len, + FILE *fp, const char *prefix, bool nokeys) +{ + struct xfrm_algo *base_algo = alloca(sizeof(*base_algo) + algo->alg_key_len / 8); + + memcpy(base_algo->alg_name, algo->alg_name, sizeof(base_algo->alg_name)); + base_algo->alg_key_len = algo->alg_key_len; + memcpy(base_algo->alg_key, algo->alg_key, algo->alg_key_len / 8); + + __xfrm_algo_print(base_algo, XFRMA_ALG_AEAD, len, fp, prefix, 0, + nokeys); + + fprintf(fp, " %d", algo->alg_icv_len); + + fprintf(fp, "%s", _SL_); +} + +static void xfrm_auth_trunc_print(struct xfrm_algo_auth *algo, int len, + FILE *fp, const char *prefix, bool nokeys) +{ + struct xfrm_algo *base_algo = alloca(sizeof(*base_algo) + algo->alg_key_len / 8); + + memcpy(base_algo->alg_name, algo->alg_name, sizeof(base_algo->alg_name)); + base_algo->alg_key_len = algo->alg_key_len; + memcpy(base_algo->alg_key, algo->alg_key, algo->alg_key_len / 8); + + __xfrm_algo_print(base_algo, XFRMA_ALG_AUTH_TRUNC, len, fp, prefix, 0, + nokeys); + + fprintf(fp, " %d", algo->alg_trunc_len); + + fprintf(fp, "%s", _SL_); +} + +static void xfrm_tmpl_print(struct xfrm_user_tmpl *tmpls, int len, + FILE *fp, const char *prefix) +{ + int ntmpls = len / sizeof(struct xfrm_user_tmpl); + int i; + + if (ntmpls <= 0) { + if (prefix) + fputs(prefix, fp); + fprintf(fp, "(ERROR \"tmpl\" truncated)"); + fprintf(fp, "%s", _SL_); + return; + } + + for (i = 0; i < ntmpls; i++) { + struct xfrm_user_tmpl *tmpl = &tmpls[i]; + + if (prefix) + fputs(prefix, fp); + + xfrm_id_info_print(&tmpl->saddr, &tmpl->id, tmpl->mode, + tmpl->reqid, tmpl->family, 0, fp, prefix, "tmpl "); + + if (show_stats > 0 || tmpl->optional) { + if (prefix) + fputs(prefix, fp); + fprintf(fp, "\t"); + switch (tmpl->optional) { + case 0: + if (show_stats > 0) + fprintf(fp, "level required "); + break; + case 1: + fprintf(fp, "level use "); + break; + default: + fprintf(fp, "level %u ", tmpl->optional); + break; + } + + if (show_stats > 0) + fprintf(fp, "share %s ", strxf_share(tmpl->share)); + + fprintf(fp, "%s", _SL_); + } + + if (show_stats > 0) { + if (prefix) + fputs(prefix, fp); + fprintf(fp, "\t"); + fprintf(fp, "%s-mask %s ", + strxf_algotype(XFRMA_ALG_CRYPT), + strxf_mask32(tmpl->ealgos)); + fprintf(fp, "%s-mask %s ", + strxf_algotype(XFRMA_ALG_AUTH), + strxf_mask32(tmpl->aalgos)); + fprintf(fp, "%s-mask %s", + strxf_algotype(XFRMA_ALG_COMP), + strxf_mask32(tmpl->calgos)); + + fprintf(fp, "%s", _SL_); + } + } +} + +static void xfrm_output_mark_print(struct rtattr *tb[], FILE *fp) +{ + __u32 output_mark = rta_getattr_u32(tb[XFRMA_OUTPUT_MARK]); + + fprintf(fp, "output-mark 0x%x", output_mark); + if (tb[XFRMA_SET_MARK_MASK]) { + __u32 mask = rta_getattr_u32(tb[XFRMA_SET_MARK_MASK]); + fprintf(fp, "/0x%x", mask); + } +} + +int xfrm_parse_mark(struct xfrm_mark *mark, int *argcp, char ***argvp) +{ + int argc = *argcp; + char **argv = *argvp; + + NEXT_ARG(); + if (get_u32(&mark->v, *argv, 0)) { + invarg("MARK value is invalid\n", *argv); + } + if (argc > 1) + NEXT_ARG(); + else { /* last entry on parse line */ + mark->m = 0xffffffff; + goto done; + } + + if (strcmp(*argv, "mask") == 0) { + NEXT_ARG(); + if (get_u32(&mark->m, *argv, 0)) { + invarg("MASK value is invalid\n", *argv); + } + } else { + mark->m = 0xffffffff; + PREV_ARG(); + } + +done: + *argcp = argc; + *argvp = argv; + + return 0; +} + +void xfrm_xfrma_print(struct rtattr *tb[], __u16 family, FILE *fp, + const char *prefix, bool nokeys, bool dir) +{ + if (tb[XFRMA_MARK]) { + struct rtattr *rta = tb[XFRMA_MARK]; + struct xfrm_mark *m = RTA_DATA(rta); + + fprintf(fp, "\tmark %#x/%#x ", m->v, m->m); + + if (tb[XFRMA_OUTPUT_MARK]) + xfrm_output_mark_print(tb, fp); + fprintf(fp, "%s", _SL_); + } else if (tb[XFRMA_OUTPUT_MARK]) { + fprintf(fp, "\t"); + + xfrm_output_mark_print(tb, fp); + fprintf(fp, "%s", _SL_); + } + + if (tb[XFRMA_ALG_AUTH] && !tb[XFRMA_ALG_AUTH_TRUNC]) { + struct rtattr *rta = tb[XFRMA_ALG_AUTH]; + + xfrm_algo_print(RTA_DATA(rta), XFRMA_ALG_AUTH, RTA_PAYLOAD(rta), + fp, prefix, nokeys); + } + + if (tb[XFRMA_ALG_AUTH_TRUNC]) { + struct rtattr *rta = tb[XFRMA_ALG_AUTH_TRUNC]; + + xfrm_auth_trunc_print(RTA_DATA(rta), RTA_PAYLOAD(rta), fp, + prefix, nokeys); + } + + if (tb[XFRMA_ALG_AEAD]) { + struct rtattr *rta = tb[XFRMA_ALG_AEAD]; + + xfrm_aead_print(RTA_DATA(rta), RTA_PAYLOAD(rta), fp, prefix, + nokeys); + } + + if (tb[XFRMA_ALG_CRYPT]) { + struct rtattr *rta = tb[XFRMA_ALG_CRYPT]; + + xfrm_algo_print(RTA_DATA(rta), XFRMA_ALG_CRYPT, + RTA_PAYLOAD(rta), fp, prefix, nokeys); + } + + if (tb[XFRMA_ALG_COMP]) { + struct rtattr *rta = tb[XFRMA_ALG_COMP]; + + xfrm_algo_print(RTA_DATA(rta), XFRMA_ALG_COMP, RTA_PAYLOAD(rta), + fp, prefix, nokeys); + } + + if (tb[XFRMA_ENCAP]) { + struct xfrm_encap_tmpl *e; + + if (prefix) + fputs(prefix, fp); + fprintf(fp, "encap "); + + if (RTA_PAYLOAD(tb[XFRMA_ENCAP]) < sizeof(*e)) { + fprintf(fp, "(ERROR truncated)"); + fprintf(fp, "%s", _SL_); + return; + } + e = RTA_DATA(tb[XFRMA_ENCAP]); + + fprintf(fp, "type "); + switch (e->encap_type) { + case UDP_ENCAP_ESPINUDP_NON_IKE: + fprintf(fp, "espinudp-nonike "); + break; + case UDP_ENCAP_ESPINUDP: + fprintf(fp, "espinudp "); + break; + case TCP_ENCAP_ESPINTCP: + fprintf(fp, "espintcp "); + break; + default: + fprintf(fp, "%u ", e->encap_type); + break; + } + fprintf(fp, "sport %u ", ntohs(e->encap_sport)); + fprintf(fp, "dport %u ", ntohs(e->encap_dport)); + + fprintf(fp, "addr %s", + rt_addr_n2a(family, sizeof(e->encap_oa), &e->encap_oa)); + fprintf(fp, "%s", _SL_); + } + + if (tb[XFRMA_TMPL]) { + struct rtattr *rta = tb[XFRMA_TMPL]; + + xfrm_tmpl_print(RTA_DATA(rta), + RTA_PAYLOAD(rta), fp, prefix); + } + + if (tb[XFRMA_COADDR]) { + const xfrm_address_t *coa; + + if (prefix) + fputs(prefix, fp); + fprintf(fp, "coa "); + + coa = RTA_DATA(tb[XFRMA_COADDR]); + if (RTA_PAYLOAD(tb[XFRMA_COADDR]) < sizeof(*coa)) { + fprintf(fp, "(ERROR truncated)"); + fprintf(fp, "%s", _SL_); + return; + } + + fprintf(fp, "%s", + rt_addr_n2a(family, sizeof(*coa), coa)); + fprintf(fp, "%s", _SL_); + } + + if (tb[XFRMA_LASTUSED]) { + __u64 lastused; + + if (prefix) + fputs(prefix, fp); + fprintf(fp, "lastused "); + + if (RTA_PAYLOAD(tb[XFRMA_LASTUSED]) < sizeof(lastused)) { + fprintf(fp, "(ERROR truncated)"); + fprintf(fp, "%s", _SL_); + return; + } + + lastused = rta_getattr_u64(tb[XFRMA_LASTUSED]); + + fprintf(fp, "%s", strxf_time(lastused)); + fprintf(fp, "%s", _SL_); + } + + if (tb[XFRMA_REPLAY_VAL]) { + struct xfrm_replay_state *replay; + + if (prefix) + fputs(prefix, fp); + fprintf(fp, "anti-replay context: "); + + if (RTA_PAYLOAD(tb[XFRMA_REPLAY_VAL]) < sizeof(*replay)) { + fprintf(fp, "(ERROR truncated)"); + fprintf(fp, "%s", _SL_); + return; + } + + replay = RTA_DATA(tb[XFRMA_REPLAY_VAL]); + fprintf(fp, "seq 0x%x, oseq 0x%x, bitmap 0x%08x", + replay->seq, replay->oseq, replay->bitmap); + fprintf(fp, "%s", _SL_); + } + + if (tb[XFRMA_REPLAY_ESN_VAL]) { + struct xfrm_replay_state_esn *replay; + unsigned int i, j; + + if (prefix) + fputs(prefix, fp); + fprintf(fp, "anti-replay esn context:"); + + if (RTA_PAYLOAD(tb[XFRMA_REPLAY_ESN_VAL]) < sizeof(*replay)) { + fprintf(fp, "(ERROR truncated)"); + fprintf(fp, "%s", _SL_); + return; + } + fprintf(fp, "%s", _SL_); + + replay = RTA_DATA(tb[XFRMA_REPLAY_ESN_VAL]); + if (prefix) + fputs(prefix, fp); + fprintf(fp, " seq-hi 0x%x, seq 0x%x, oseq-hi 0x%0x, oseq 0x%0x", + replay->seq_hi, replay->seq, replay->oseq_hi, + replay->oseq); + fprintf(fp, "%s", _SL_); + if (prefix) + fputs(prefix, fp); + fprintf(fp, " replay_window %u, bitmap-length %u", + replay->replay_window, replay->bmp_len); + for (i = replay->bmp_len, j = 0; i; i--) { + if (j++ % 8 == 0) { + fprintf(fp, "%s", _SL_); + if (prefix) + fputs(prefix, fp); + fprintf(fp, " "); + } + fprintf(fp, "%08x ", replay->bmp[i - 1]); + } + fprintf(fp, "%s", _SL_); + } + if (tb[XFRMA_OFFLOAD_DEV]) { + struct xfrm_user_offload *xuo; + + if (prefix) + fputs(prefix, fp); + fprintf(fp, "crypto offload parameters: "); + + if (RTA_PAYLOAD(tb[XFRMA_OFFLOAD_DEV]) < sizeof(*xuo)) { + fprintf(fp, "(ERROR truncated)"); + fprintf(fp, "%s", _SL_); + return; + } + + xuo = (struct xfrm_user_offload *) + RTA_DATA(tb[XFRMA_OFFLOAD_DEV]); + fprintf(fp, "dev %s ", + ll_index_to_name(xuo->ifindex)); + if (dir) + fprintf(fp, "dir %s ", + (xuo->flags & XFRM_OFFLOAD_INBOUND) ? "in" : "out"); + fprintf(fp, "mode %s", + (xuo->flags & XFRM_OFFLOAD_PACKET) ? "packet" : "crypto"); + fprintf(fp, "%s", _SL_); + } + if (tb[XFRMA_IF_ID]) { + __u32 if_id = rta_getattr_u32(tb[XFRMA_IF_ID]); + + if (prefix) + fputs(prefix, fp); + fprintf(fp, "if_id %#x", if_id); + fprintf(fp, "%s", _SL_); + } + if (tb[XFRMA_TFCPAD]) { + __u32 tfcpad = rta_getattr_u32(tb[XFRMA_TFCPAD]); + + if (prefix) + fputs(prefix, fp); + fprintf(fp, "tfcpad %u", tfcpad); + fprintf(fp, "%s", _SL_); + } +} + +static int xfrm_selector_iszero(struct xfrm_selector *s) +{ + struct xfrm_selector s0 = {}; + + return (memcmp(&s0, s, sizeof(s0)) == 0); +} + +static void xfrm_sec_ctx_print(FILE *fp, struct rtattr *attr) +{ + struct xfrm_user_sec_ctx *sctx; + + fprintf(fp, "\tsecurity context "); + + if (RTA_PAYLOAD(attr) < sizeof(*sctx)) + fprintf(fp, "(ERROR truncated)"); + + sctx = RTA_DATA(attr); + fprintf(fp, "%.*s %s", sctx->ctx_len, (char *)(sctx + 1), _SL_); +} + +void xfrm_state_info_print(struct xfrm_usersa_info *xsinfo, + struct rtattr *tb[], FILE *fp, const char *prefix, + const char *title, bool nokeys) +{ + char buf[STRBUF_SIZE] = {}; + int force_spi = xfrm_xfrmproto_is_ipsec(xsinfo->id.proto); + + xfrm_id_info_print(&xsinfo->saddr, &xsinfo->id, xsinfo->mode, + xsinfo->reqid, xsinfo->family, force_spi, fp, + prefix, title); + + if (prefix) + strlcat(buf, prefix, sizeof(buf)); + strlcat(buf, "\t", sizeof(buf)); + + fputs(buf, fp); + fprintf(fp, "replay-window %u ", xsinfo->replay_window); + if (show_stats > 0) + fprintf(fp, "seq 0x%08u ", xsinfo->seq); + if (show_stats > 0 || xsinfo->flags) { + __u8 flags = xsinfo->flags; + + fprintf(fp, "flag "); + XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_NOECN, "noecn"); + XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_DECAP_DSCP, "decap-dscp"); + XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_NOPMTUDISC, "nopmtudisc"); + XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_WILDRECV, "wildrecv"); + XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_ICMP, "icmp"); + XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_AF_UNSPEC, "af-unspec"); + XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_ALIGN4, "align4"); + XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_ESN, "esn"); + if (flags) + fprintf(fp, "%x", flags); + } + if (show_stats > 0 && tb[XFRMA_SA_EXTRA_FLAGS]) { + __u32 extra_flags = rta_getattr_u32(tb[XFRMA_SA_EXTRA_FLAGS]); + + fprintf(fp, "extra_flag "); + XFRM_FLAG_PRINT(fp, extra_flags, + XFRM_SA_XFLAG_DONT_ENCAP_DSCP, + "dont-encap-dscp"); + XFRM_FLAG_PRINT(fp, extra_flags, + XFRM_SA_XFLAG_OSEQ_MAY_WRAP, + "oseq-may-wrap"); + if (extra_flags) + fprintf(fp, "%x", extra_flags); + } + if (show_stats > 0) + fprintf(fp, " (0x%s)", strxf_mask8(xsinfo->flags)); + fprintf(fp, "%s", _SL_); + + xfrm_xfrma_print(tb, xsinfo->family, fp, buf, nokeys, true); + + if (!xfrm_selector_iszero(&xsinfo->sel)) { + char sbuf[STRBUF_SIZE]; + + memcpy(sbuf, buf, sizeof(sbuf)); + strlcat(sbuf, "sel ", sizeof(sbuf)); + + xfrm_selector_print(&xsinfo->sel, xsinfo->family, fp, sbuf); + } + + if (show_stats > 0) { + xfrm_lifetime_print(&xsinfo->lft, &xsinfo->curlft, fp, buf); + xfrm_stats_print(&xsinfo->stats, fp, buf); + } + + if (tb[XFRMA_SEC_CTX]) + xfrm_sec_ctx_print(fp, tb[XFRMA_SEC_CTX]); +} + +void xfrm_policy_info_print(struct xfrm_userpolicy_info *xpinfo, + struct rtattr *tb[], FILE *fp, const char *prefix, + const char *title) +{ + char buf[STRBUF_SIZE] = {}; + + xfrm_selector_print(&xpinfo->sel, preferred_family, fp, title); + + if (tb[XFRMA_SEC_CTX]) + xfrm_sec_ctx_print(fp, tb[XFRMA_SEC_CTX]); + + if (prefix) + strlcat(buf, prefix, sizeof(buf)); + strlcat(buf, "\t", sizeof(buf)); + + fputs(buf, fp); + if (xpinfo->dir >= XFRM_POLICY_MAX) { + xpinfo->dir -= XFRM_POLICY_MAX; + fprintf(fp, "socket "); + } else + fprintf(fp, "dir "); + + switch (xpinfo->dir) { + case XFRM_POLICY_IN: + fprintf(fp, "in"); + break; + case XFRM_POLICY_OUT: + fprintf(fp, "out"); + break; + case XFRM_POLICY_FWD: + fprintf(fp, "fwd"); + break; + default: + fprintf(fp, "%u", xpinfo->dir); + break; + } + fprintf(fp, " "); + + switch (xpinfo->action) { + case XFRM_POLICY_ALLOW: + if (show_stats > 0) + fprintf(fp, "action allow "); + break; + case XFRM_POLICY_BLOCK: + fprintf(fp, "action block "); + break; + default: + fprintf(fp, "action %u ", xpinfo->action); + break; + } + + if (show_stats) + fprintf(fp, "index %u ", xpinfo->index); + fprintf(fp, "priority %u ", xpinfo->priority); + + if (tb[XFRMA_POLICY_TYPE]) { + struct xfrm_userpolicy_type *upt; + + fprintf(fp, "ptype "); + + if (RTA_PAYLOAD(tb[XFRMA_POLICY_TYPE]) < sizeof(*upt)) + fprintf(fp, "(ERROR truncated)"); + + upt = RTA_DATA(tb[XFRMA_POLICY_TYPE]); + fprintf(fp, "%s ", strxf_ptype(upt->type)); + } + + if (show_stats > 0) + fprintf(fp, "share %s ", strxf_share(xpinfo->share)); + + if (show_stats > 0 || xpinfo->flags) { + __u8 flags = xpinfo->flags; + + fprintf(fp, "flag "); + XFRM_FLAG_PRINT(fp, flags, XFRM_POLICY_LOCALOK, "localok"); + XFRM_FLAG_PRINT(fp, flags, XFRM_POLICY_ICMP, "icmp"); + if (flags) + fprintf(fp, "%x", flags); + } + if (show_stats > 0) + fprintf(fp, " (0x%s)", strxf_mask8(xpinfo->flags)); + fprintf(fp, "%s", _SL_); + + if (show_stats > 0) + xfrm_lifetime_print(&xpinfo->lft, &xpinfo->curlft, fp, buf); + + xfrm_xfrma_print(tb, xpinfo->sel.family, fp, buf, false, false); +} + +int xfrm_id_parse(xfrm_address_t *saddr, struct xfrm_id *id, __u16 *family, + int loose, int *argcp, char ***argvp) +{ + int argc = *argcp; + char **argv = *argvp; + inet_prefix dst = {}; + inet_prefix src = {}; + + while (1) { + if (strcmp(*argv, "src") == 0) { + NEXT_ARG(); + + get_prefix(&src, *argv, preferred_family); + if (src.family == AF_UNSPEC) + invarg("value after \"src\" has an unrecognized address family", *argv); + if (family) + *family = src.family; + + memcpy(saddr, &src.data, sizeof(*saddr)); + + filter.id_src_mask = src.bitlen; + + } else if (strcmp(*argv, "dst") == 0) { + NEXT_ARG(); + + get_prefix(&dst, *argv, preferred_family); + if (dst.family == AF_UNSPEC) + invarg("value after \"dst\" has an unrecognized address family", *argv); + if (family) + *family = dst.family; + + memcpy(&id->daddr, &dst.data, sizeof(id->daddr)); + + filter.id_dst_mask = dst.bitlen; + + } else if (strcmp(*argv, "proto") == 0) { + int ret; + + NEXT_ARG(); + + ret = xfrm_xfrmproto_getbyname(*argv); + if (ret < 0) + invarg("XFRM-PROTO value is invalid", *argv); + + id->proto = (__u8)ret; + + filter.id_proto_mask = XFRM_FILTER_MASK_FULL; + + } else if (strcmp(*argv, "spi") == 0) { + NEXT_ARG(); + if (get_be32(&id->spi, *argv, 0)) + invarg("SPI value is invalid", *argv); + + filter.id_spi_mask = XFRM_FILTER_MASK_FULL; + + } else { + PREV_ARG(); /* back track */ + break; + } + + if (!NEXT_ARG_OK()) + break; + NEXT_ARG(); + } + + if (src.family && dst.family && (src.family != dst.family)) + invarg("the same address family is required between values after \"src\" and \"dst\"", *argv); + + if (id->spi && id->proto) { + if (xfrm_xfrmproto_is_ro(id->proto)) { + fprintf(stderr, "\"spi\" is invalid with XFRM-PROTO value \"%s\"\n", + strxf_xfrmproto(id->proto)); + exit(1); + } else if (id->proto == IPPROTO_COMP && ntohl(id->spi) >= 0x10000) { + fprintf(stderr, "SPI value is too large with XFRM-PROTO value \"%s\"\n", + strxf_xfrmproto(id->proto)); + exit(1); + } + } + + if (loose == 0 && id->proto == 0) + missarg("XFRM-PROTO"); + if (argc == *argcp) + missarg("ID"); + + *argcp = argc; + *argvp = argv; + + return 0; +} + +int xfrm_mode_parse(__u8 *mode, int *argcp, char ***argvp) +{ + int argc = *argcp; + char **argv = *argvp; + + if (matches(*argv, "transport") == 0) + *mode = XFRM_MODE_TRANSPORT; + else if (matches(*argv, "tunnel") == 0) + *mode = XFRM_MODE_TUNNEL; + else if (matches(*argv, "ro") == 0) + *mode = XFRM_MODE_ROUTEOPTIMIZATION; + else if (matches(*argv, "in_trigger") == 0) + *mode = XFRM_MODE_IN_TRIGGER; + else if (matches(*argv, "beet") == 0) + *mode = XFRM_MODE_BEET; + else + invarg("MODE value is invalid", *argv); + + *argcp = argc; + *argvp = argv; + + return 0; +} + +int xfrm_encap_type_parse(__u16 *type, int *argcp, char ***argvp) +{ + int argc = *argcp; + char **argv = *argvp; + + if (strcmp(*argv, "espinudp-nonike") == 0) + *type = UDP_ENCAP_ESPINUDP_NON_IKE; + else if (strcmp(*argv, "espinudp") == 0) + *type = UDP_ENCAP_ESPINUDP; + else if (strcmp(*argv, "espintcp") == 0) + *type = TCP_ENCAP_ESPINTCP; + else + invarg("ENCAP-TYPE value is invalid", *argv); + + *argcp = argc; + *argvp = argv; + + return 0; +} + +/* NOTE: reqid is used by host-byte order */ +int xfrm_reqid_parse(__u32 *reqid, int *argcp, char ***argvp) +{ + int argc = *argcp; + char **argv = *argvp; + + if (get_u32(reqid, *argv, 0)) + invarg("REQID value is invalid", *argv); + + *argcp = argc; + *argvp = argv; + + return 0; +} + +static int xfrm_selector_upspec_parse(struct xfrm_selector *sel, + int *argcp, char ***argvp) +{ + int argc = *argcp; + char **argv = *argvp; + char *sportp = NULL; + char *dportp = NULL; + char *typep = NULL; + char *codep = NULL; + char *grekey = NULL; + + while (1) { + if (strcmp(*argv, "proto") == 0) { + __u8 upspec; + + NEXT_ARG(); + + if (strcmp(*argv, "any") == 0) + upspec = 0; + else { + struct protoent *pp; + + pp = getprotobyname(*argv); + if (pp) + upspec = pp->p_proto; + else { + if (get_u8(&upspec, *argv, 0)) + invarg("PROTO value is invalid", *argv); + } + } + sel->proto = upspec; + + filter.upspec_proto_mask = XFRM_FILTER_MASK_FULL; + + } else if (strcmp(*argv, "sport") == 0) { + sportp = *argv; + + NEXT_ARG(); + + if (get_be16(&sel->sport, *argv, 0)) + invarg("value after \"sport\" is invalid", *argv); + if (sel->sport) + sel->sport_mask = ~((__u16)0); + + filter.upspec_sport_mask = XFRM_FILTER_MASK_FULL; + + } else if (strcmp(*argv, "dport") == 0) { + dportp = *argv; + + NEXT_ARG(); + + if (get_be16(&sel->dport, *argv, 0)) + invarg("value after \"dport\" is invalid", *argv); + if (sel->dport) + sel->dport_mask = ~((__u16)0); + + filter.upspec_dport_mask = XFRM_FILTER_MASK_FULL; + + } else if (strcmp(*argv, "type") == 0) { + typep = *argv; + + NEXT_ARG(); + + if (get_u16(&sel->sport, *argv, 0) || + (sel->sport & ~((__u16)0xff))) + invarg("value after \"type\" is invalid", *argv); + sel->sport = htons(sel->sport); + sel->sport_mask = ~((__u16)0); + + filter.upspec_sport_mask = XFRM_FILTER_MASK_FULL; + + + } else if (strcmp(*argv, "code") == 0) { + codep = *argv; + + NEXT_ARG(); + + if (get_u16(&sel->dport, *argv, 0) || + (sel->dport & ~((__u16)0xff))) + invarg("value after \"code\" is invalid", *argv); + sel->dport = htons(sel->dport); + sel->dport_mask = ~((__u16)0); + + filter.upspec_dport_mask = XFRM_FILTER_MASK_FULL; + + } else if (strcmp(*argv, "key") == 0) { + unsigned int uval; + + grekey = *argv; + + NEXT_ARG(); + + if (strchr(*argv, '.')) + uval = htonl(get_addr32(*argv)); + else { + if (get_unsigned(&uval, *argv, 0) < 0) { + fprintf(stderr, "value after \"key\" is invalid\n"); + exit(-1); + } + } + + sel->sport = htons(uval >> 16); + sel->dport = htons(uval & 0xffff); + sel->sport_mask = ~((__u16)0); + sel->dport_mask = ~((__u16)0); + + filter.upspec_dport_mask = XFRM_FILTER_MASK_FULL; + + } else { + PREV_ARG(); /* back track */ + break; + } + + if (!NEXT_ARG_OK()) + break; + NEXT_ARG(); + } + if (argc == *argcp) + missarg("UPSPEC"); + if (sportp || dportp) { + switch (sel->proto) { + case IPPROTO_TCP: + case IPPROTO_UDP: + case IPPROTO_SCTP: + case IPPROTO_DCCP: + case IPPROTO_IP: /* to allow shared SA for different protocols */ + break; + default: + fprintf(stderr, "\"sport\" and \"dport\" are invalid with PROTO value \"%s\"\n", strxf_proto(sel->proto)); + exit(1); + } + } + if (typep || codep) { + switch (sel->proto) { + case IPPROTO_ICMP: + case IPPROTO_ICMPV6: + case IPPROTO_MH: + break; + default: + fprintf(stderr, "\"type\" and \"code\" are invalid with PROTO value \"%s\"\n", strxf_proto(sel->proto)); + exit(1); + } + } + if (grekey) { + switch (sel->proto) { + case IPPROTO_GRE: + break; + default: + fprintf(stderr, "\"key\" is invalid with PROTO value \"%s\"\n", strxf_proto(sel->proto)); + exit(1); + } + } + + *argcp = argc; + *argvp = argv; + + return 0; +} + +int xfrm_selector_parse(struct xfrm_selector *sel, int *argcp, char ***argvp) +{ + int argc = *argcp; + char **argv = *argvp; + inet_prefix dst = {}; + inet_prefix src = {}; + char *upspecp = NULL; + + while (1) { + if (strcmp(*argv, "src") == 0) { + NEXT_ARG(); + + get_prefix(&src, *argv, preferred_family); + if (src.family == AF_UNSPEC) + invarg("value after \"src\" has an unrecognized address family", *argv); + sel->family = src.family; + + memcpy(&sel->saddr, &src.data, sizeof(sel->saddr)); + sel->prefixlen_s = src.bitlen; + + filter.sel_src_mask = src.bitlen; + + } else if (strcmp(*argv, "dst") == 0) { + NEXT_ARG(); + + get_prefix(&dst, *argv, preferred_family); + if (dst.family == AF_UNSPEC) + invarg("value after \"dst\" has an unrecognized address family", *argv); + sel->family = dst.family; + + memcpy(&sel->daddr, &dst.data, sizeof(sel->daddr)); + sel->prefixlen_d = dst.bitlen; + + filter.sel_dst_mask = dst.bitlen; + + } else if (strcmp(*argv, "dev") == 0) { + int ifindex; + + NEXT_ARG(); + + if (strcmp(*argv, "none") == 0) + ifindex = 0; + else { + ifindex = ll_name_to_index(*argv); + if (ifindex <= 0) + invarg("DEV value is invalid", *argv); + } + sel->ifindex = ifindex; + + filter.sel_dev_mask = XFRM_FILTER_MASK_FULL; + + } else { + if (upspecp) { + PREV_ARG(); /* back track */ + break; + } else { + upspecp = *argv; + xfrm_selector_upspec_parse(sel, &argc, &argv); + } + } + + if (!NEXT_ARG_OK()) + break; + + NEXT_ARG(); + } + + if (src.family && dst.family && (src.family != dst.family)) + invarg("the same address family is required between values after \"src\" and \"dst\"", *argv); + + if (argc == *argcp) + missarg("SELECTOR"); + + *argcp = argc; + *argvp = argv; + + return 0; +} + +int xfrm_lifetime_cfg_parse(struct xfrm_lifetime_cfg *lft, + int *argcp, char ***argvp) +{ + int argc = *argcp; + char **argv = *argvp; + int ret; + + if (strcmp(*argv, "time-soft") == 0) { + NEXT_ARG(); + ret = get_u64(&lft->soft_add_expires_seconds, *argv, 0); + if (ret) + invarg("value after \"time-soft\" is invalid", *argv); + } else if (strcmp(*argv, "time-hard") == 0) { + NEXT_ARG(); + ret = get_u64(&lft->hard_add_expires_seconds, *argv, 0); + if (ret) + invarg("value after \"time-hard\" is invalid", *argv); + } else if (strcmp(*argv, "time-use-soft") == 0) { + NEXT_ARG(); + ret = get_u64(&lft->soft_use_expires_seconds, *argv, 0); + if (ret) + invarg("value after \"time-use-soft\" is invalid", *argv); + } else if (strcmp(*argv, "time-use-hard") == 0) { + NEXT_ARG(); + ret = get_u64(&lft->hard_use_expires_seconds, *argv, 0); + if (ret) + invarg("value after \"time-use-hard\" is invalid", *argv); + } else if (strcmp(*argv, "byte-soft") == 0) { + NEXT_ARG(); + ret = get_u64(&lft->soft_byte_limit, *argv, 0); + if (ret) + invarg("value after \"byte-soft\" is invalid", *argv); + } else if (strcmp(*argv, "byte-hard") == 0) { + NEXT_ARG(); + ret = get_u64(&lft->hard_byte_limit, *argv, 0); + if (ret) + invarg("value after \"byte-hard\" is invalid", *argv); + } else if (strcmp(*argv, "packet-soft") == 0) { + NEXT_ARG(); + ret = get_u64(&lft->soft_packet_limit, *argv, 0); + if (ret) + invarg("value after \"packet-soft\" is invalid", *argv); + } else if (strcmp(*argv, "packet-hard") == 0) { + NEXT_ARG(); + ret = get_u64(&lft->hard_packet_limit, *argv, 0); + if (ret) + invarg("value after \"packet-hard\" is invalid", *argv); + } else + invarg("LIMIT value is invalid", *argv); + + *argcp = argc; + *argvp = argv; + + return 0; +} + +int do_xfrm(int argc, char **argv) +{ + memset(&filter, 0, sizeof(filter)); + + if (argc < 1) + usage(); + + if (matches(*argv, "state") == 0 || + matches(*argv, "sa") == 0) + return do_xfrm_state(argc-1, argv+1); + else if (matches(*argv, "policy") == 0) + return do_xfrm_policy(argc-1, argv+1); + else if (matches(*argv, "monitor") == 0) + return do_xfrm_monitor(argc-1, argv+1); + else if (matches(*argv, "help") == 0) { + usage(); + fprintf(stderr, "xfrm Object \"%s\" is unknown.\n", *argv); + exit(-1); + } + usage(); +} |