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Commit | Line | Data |
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718e3744 | 1 | /* Socket union related function. |
2 | * Copyright (c) 1997, 98 Kunihiro Ishiguro | |
3 | * | |
4 | * This file is part of GNU Zebra. | |
5 | * | |
6 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2, or (at your option) any | |
9 | * later version. | |
10 | * | |
11 | * GNU Zebra is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
896014f4 DL |
16 | * You should have received a copy of the GNU General Public License along |
17 | * with this program; see the file COPYING; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
718e3744 | 19 | */ |
20 | ||
21 | #include <zebra.h> | |
22 | ||
23 | #include "prefix.h" | |
24 | #include "vty.h" | |
25 | #include "sockunion.h" | |
26 | #include "memory.h" | |
718e3744 | 27 | #include "log.h" |
7cb5cdbb | 28 | #include "jhash.h" |
174482ef | 29 | #include "lib_errors.h" |
02f686ff | 30 | #include "printfrr.h" |
718e3744 | 31 | |
bf8d3d6a | 32 | DEFINE_MTYPE_STATIC(LIB, SOCKUNION, "Socket union"); |
4a1ab8e4 | 33 | |
d62a17ae | 34 | const char *inet_sutop(const union sockunion *su, char *str) |
35 | { | |
36 | switch (su->sa.sa_family) { | |
37 | case AF_INET: | |
38 | inet_ntop(AF_INET, &su->sin.sin_addr, str, INET_ADDRSTRLEN); | |
39 | break; | |
40 | case AF_INET6: | |
41 | inet_ntop(AF_INET6, &su->sin6.sin6_addr, str, INET6_ADDRSTRLEN); | |
42 | break; | |
43 | } | |
44 | return str; | |
718e3744 | 45 | } |
46 | ||
d62a17ae | 47 | int str2sockunion(const char *str, union sockunion *su) |
718e3744 | 48 | { |
d62a17ae | 49 | int ret; |
718e3744 | 50 | |
d1f92e45 | 51 | if (str == NULL) |
52 | return -1; | |
53 | ||
d62a17ae | 54 | memset(su, 0, sizeof(union sockunion)); |
718e3744 | 55 | |
d62a17ae | 56 | ret = inet_pton(AF_INET, str, &su->sin.sin_addr); |
57 | if (ret > 0) /* Valid IPv4 address format. */ | |
58 | { | |
59 | su->sin.sin_family = AF_INET; | |
6f0e3f6e | 60 | #ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN |
d62a17ae | 61 | su->sin.sin_len = sizeof(struct sockaddr_in); |
6f0e3f6e | 62 | #endif /* HAVE_STRUCT_SOCKADDR_IN_SIN_LEN */ |
d62a17ae | 63 | return 0; |
64 | } | |
65 | ret = inet_pton(AF_INET6, str, &su->sin6.sin6_addr); | |
66 | if (ret > 0) /* Valid IPv6 address format. */ | |
67 | { | |
68 | su->sin6.sin6_family = AF_INET6; | |
718e3744 | 69 | #ifdef SIN6_LEN |
d62a17ae | 70 | su->sin6.sin6_len = sizeof(struct sockaddr_in6); |
718e3744 | 71 | #endif /* SIN6_LEN */ |
d62a17ae | 72 | return 0; |
73 | } | |
74 | return -1; | |
718e3744 | 75 | } |
76 | ||
d62a17ae | 77 | const char *sockunion2str(const union sockunion *su, char *buf, size_t len) |
718e3744 | 78 | { |
d62a17ae | 79 | switch (sockunion_family(su)) { |
80 | case AF_UNSPEC: | |
81 | snprintf(buf, len, "(unspec)"); | |
82 | return buf; | |
83 | case AF_INET: | |
84 | return inet_ntop(AF_INET, &su->sin.sin_addr, buf, len); | |
85 | case AF_INET6: | |
86 | return inet_ntop(AF_INET6, &su->sin6.sin6_addr, buf, len); | |
87 | } | |
88 | snprintf(buf, len, "(af %d)", sockunion_family(su)); | |
89 | return buf; | |
718e3744 | 90 | } |
91 | ||
d62a17ae | 92 | union sockunion *sockunion_str2su(const char *str) |
2fb2a455 | 93 | { |
d62a17ae | 94 | union sockunion *su = XCALLOC(MTYPE_SOCKUNION, sizeof(union sockunion)); |
95 | ||
96 | if (!str2sockunion(str, su)) | |
97 | return su; | |
98 | ||
99 | XFREE(MTYPE_SOCKUNION, su); | |
100 | return NULL; | |
2fb2a455 PJ |
101 | } |
102 | ||
1a7dcf42 | 103 | /* Convert IPv4 compatible IPv6 address to IPv4 address. */ |
d62a17ae | 104 | static void sockunion_normalise_mapped(union sockunion *su) |
105 | { | |
106 | struct sockaddr_in sin; | |
107 | ||
108 | if (su->sa.sa_family == AF_INET6 | |
109 | && IN6_IS_ADDR_V4MAPPED(&su->sin6.sin6_addr)) { | |
110 | memset(&sin, 0, sizeof(struct sockaddr_in)); | |
111 | sin.sin_family = AF_INET; | |
112 | sin.sin_port = su->sin6.sin6_port; | |
113 | memcpy(&sin.sin_addr, ((char *)&su->sin6.sin6_addr) + 12, 4); | |
114 | memcpy(su, &sin, sizeof(struct sockaddr_in)); | |
115 | } | |
1a7dcf42 PJ |
116 | } |
117 | ||
fc9707c3 | 118 | /* return sockunion structure : this function should be revised. */ |
d62a17ae | 119 | static const char *sockunion_log(const union sockunion *su, char *buf, |
120 | size_t len) | |
fc9707c3 | 121 | { |
d62a17ae | 122 | switch (su->sa.sa_family) { |
123 | case AF_INET: | |
124 | return inet_ntop(AF_INET, &su->sin.sin_addr, buf, len); | |
fc9707c3 | 125 | |
d62a17ae | 126 | case AF_INET6: |
127 | return inet_ntop(AF_INET6, &(su->sin6.sin6_addr), buf, len); | |
fc9707c3 | 128 | |
d62a17ae | 129 | default: |
130 | snprintf(buf, len, "af_unknown %d ", su->sa.sa_family); | |
131 | return buf; | |
132 | } | |
fc9707c3 DW |
133 | } |
134 | ||
718e3744 | 135 | /* Return socket of sockunion. */ |
d62a17ae | 136 | int sockunion_socket(const union sockunion *su) |
718e3744 | 137 | { |
d62a17ae | 138 | int sock; |
718e3744 | 139 | |
d62a17ae | 140 | sock = socket(su->sa.sa_family, SOCK_STREAM, 0); |
141 | if (sock < 0) { | |
142 | char buf[SU_ADDRSTRLEN]; | |
450971aa | 143 | flog_err(EC_LIB_SOCKET, "Can't make socket for %s : %s", |
1b5e2f89 DS |
144 | sockunion_log(su, buf, SU_ADDRSTRLEN), |
145 | safe_strerror(errno)); | |
d62a17ae | 146 | return -1; |
147 | } | |
718e3744 | 148 | |
d62a17ae | 149 | return sock; |
718e3744 | 150 | } |
151 | ||
152 | /* Return accepted new socket file descriptor. */ | |
d62a17ae | 153 | int sockunion_accept(int sock, union sockunion *su) |
718e3744 | 154 | { |
d62a17ae | 155 | socklen_t len; |
156 | int client_sock; | |
718e3744 | 157 | |
d62a17ae | 158 | len = sizeof(union sockunion); |
159 | client_sock = accept(sock, (struct sockaddr *)su, &len); | |
160 | ||
161 | sockunion_normalise_mapped(su); | |
162 | return client_sock; | |
718e3744 | 163 | } |
164 | ||
165 | /* Return sizeof union sockunion. */ | |
862f2f37 | 166 | int sockunion_sizeof(const union sockunion *su) |
d62a17ae | 167 | { |
168 | int ret; | |
169 | ||
170 | ret = 0; | |
171 | switch (su->sa.sa_family) { | |
172 | case AF_INET: | |
173 | ret = sizeof(struct sockaddr_in); | |
174 | break; | |
175 | case AF_INET6: | |
176 | ret = sizeof(struct sockaddr_in6); | |
177 | break; | |
178 | } | |
179 | return ret; | |
718e3744 | 180 | } |
181 | ||
b11b5772 | 182 | /* Performs a non-blocking connect(). */ |
d62a17ae | 183 | enum connect_result sockunion_connect(int fd, const union sockunion *peersu, |
184 | unsigned short port, ifindex_t ifindex) | |
185 | { | |
186 | int ret; | |
d62a17ae | 187 | union sockunion su; |
188 | ||
189 | memcpy(&su, peersu, sizeof(union sockunion)); | |
190 | ||
191 | switch (su.sa.sa_family) { | |
192 | case AF_INET: | |
193 | su.sin.sin_port = port; | |
194 | break; | |
195 | case AF_INET6: | |
196 | su.sin6.sin6_port = port; | |
718e3744 | 197 | #ifdef KAME |
d62a17ae | 198 | if (IN6_IS_ADDR_LINKLOCAL(&su.sin6.sin6_addr) && ifindex) { |
199 | su.sin6.sin6_scope_id = ifindex; | |
200 | SET_IN6_LINKLOCAL_IFINDEX(su.sin6.sin6_addr, ifindex); | |
201 | } | |
718e3744 | 202 | #endif /* KAME */ |
d62a17ae | 203 | break; |
204 | } | |
205 | ||
d62a17ae | 206 | /* Call connect function. */ |
207 | ret = connect(fd, (struct sockaddr *)&su, sockunion_sizeof(&su)); | |
208 | ||
209 | /* Immediate success */ | |
b11b5772 | 210 | if (ret == 0) |
d62a17ae | 211 | return connect_success; |
d62a17ae | 212 | |
213 | /* If connect is in progress then return 1 else it's real error. */ | |
214 | if (ret < 0) { | |
215 | if (errno != EINPROGRESS) { | |
216 | char str[SU_ADDRSTRLEN]; | |
217 | zlog_info("can't connect to %s fd %d : %s", | |
0d6f7fd6 | 218 | sockunion_log(&su, str, sizeof(str)), fd, |
d62a17ae | 219 | safe_strerror(errno)); |
220 | return connect_error; | |
221 | } | |
718e3744 | 222 | } |
718e3744 | 223 | |
d62a17ae | 224 | return connect_in_progress; |
718e3744 | 225 | } |
226 | ||
227 | /* Make socket from sockunion union. */ | |
d62a17ae | 228 | int sockunion_stream_socket(union sockunion *su) |
718e3744 | 229 | { |
d62a17ae | 230 | int sock; |
718e3744 | 231 | |
d62a17ae | 232 | if (su->sa.sa_family == 0) |
233 | su->sa.sa_family = AF_INET_UNION; | |
718e3744 | 234 | |
d62a17ae | 235 | sock = socket(su->sa.sa_family, SOCK_STREAM, 0); |
718e3744 | 236 | |
d62a17ae | 237 | if (sock < 0) |
450971aa | 238 | flog_err(EC_LIB_SOCKET, |
1b5e2f89 | 239 | "can't make socket sockunion_stream_socket"); |
718e3744 | 240 | |
d62a17ae | 241 | return sock; |
718e3744 | 242 | } |
243 | ||
244 | /* Bind socket to specified address. */ | |
d62a17ae | 245 | int sockunion_bind(int sock, union sockunion *su, unsigned short port, |
246 | union sockunion *su_addr) | |
718e3744 | 247 | { |
d62a17ae | 248 | int size = 0; |
249 | int ret; | |
718e3744 | 250 | |
d62a17ae | 251 | if (su->sa.sa_family == AF_INET) { |
252 | size = sizeof(struct sockaddr_in); | |
253 | su->sin.sin_port = htons(port); | |
6f0e3f6e | 254 | #ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN |
d62a17ae | 255 | su->sin.sin_len = size; |
6f0e3f6e | 256 | #endif /* HAVE_STRUCT_SOCKADDR_IN_SIN_LEN */ |
d62a17ae | 257 | if (su_addr == NULL) |
258 | sockunion2ip(su) = htonl(INADDR_ANY); | |
259 | } else if (su->sa.sa_family == AF_INET6) { | |
260 | size = sizeof(struct sockaddr_in6); | |
261 | su->sin6.sin6_port = htons(port); | |
718e3744 | 262 | #ifdef SIN6_LEN |
d62a17ae | 263 | su->sin6.sin6_len = size; |
718e3744 | 264 | #endif /* SIN6_LEN */ |
d62a17ae | 265 | if (su_addr == NULL) { |
1cbb5dfc | 266 | #ifdef LINUX_IPV6 |
d62a17ae | 267 | memset(&su->sin6.sin6_addr, 0, sizeof(struct in6_addr)); |
718e3744 | 268 | #else |
d62a17ae | 269 | su->sin6.sin6_addr = in6addr_any; |
718e3744 | 270 | #endif /* LINUX_IPV6 */ |
d62a17ae | 271 | } |
718e3744 | 272 | } |
718e3744 | 273 | |
d62a17ae | 274 | ret = bind(sock, (struct sockaddr *)su, size); |
275 | if (ret < 0) { | |
276 | char buf[SU_ADDRSTRLEN]; | |
450971aa | 277 | flog_err(EC_LIB_SOCKET, "can't bind socket for %s : %s", |
1b5e2f89 DS |
278 | sockunion_log(su, buf, SU_ADDRSTRLEN), |
279 | safe_strerror(errno)); | |
d62a17ae | 280 | } |
718e3744 | 281 | |
d62a17ae | 282 | return ret; |
718e3744 | 283 | } |
284 | ||
d62a17ae | 285 | int sockopt_reuseaddr(int sock) |
718e3744 | 286 | { |
d62a17ae | 287 | int ret; |
288 | int on = 1; | |
718e3744 | 289 | |
d62a17ae | 290 | ret = setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (void *)&on, |
291 | sizeof(on)); | |
292 | if (ret < 0) { | |
450971aa | 293 | flog_err(EC_LIB_SOCKET, |
1b5e2f89 | 294 | "can't set sockopt SO_REUSEADDR to socket %d", sock); |
d62a17ae | 295 | return -1; |
296 | } | |
297 | return 0; | |
718e3744 | 298 | } |
299 | ||
300 | #ifdef SO_REUSEPORT | |
d62a17ae | 301 | int sockopt_reuseport(int sock) |
718e3744 | 302 | { |
d62a17ae | 303 | int ret; |
304 | int on = 1; | |
718e3744 | 305 | |
d62a17ae | 306 | ret = setsockopt(sock, SOL_SOCKET, SO_REUSEPORT, (void *)&on, |
307 | sizeof(on)); | |
308 | if (ret < 0) { | |
450971aa | 309 | flog_err(EC_LIB_SOCKET, |
1b5e2f89 | 310 | "can't set sockopt SO_REUSEPORT to socket %d", sock); |
d62a17ae | 311 | return -1; |
312 | } | |
313 | return 0; | |
718e3744 | 314 | } |
315 | #else | |
d62a17ae | 316 | int sockopt_reuseport(int sock) |
718e3744 | 317 | { |
d62a17ae | 318 | return 0; |
718e3744 | 319 | } |
320 | #endif /* 0 */ | |
321 | ||
d62a17ae | 322 | int sockopt_ttl(int family, int sock, int ttl) |
718e3744 | 323 | { |
d62a17ae | 324 | int ret; |
718e3744 | 325 | |
326 | #ifdef IP_TTL | |
d62a17ae | 327 | if (family == AF_INET) { |
328 | ret = setsockopt(sock, IPPROTO_IP, IP_TTL, (void *)&ttl, | |
329 | sizeof(int)); | |
330 | if (ret < 0) { | |
450971aa | 331 | flog_err(EC_LIB_SOCKET, |
1b5e2f89 | 332 | "can't set sockopt IP_TTL %d to socket %d", |
ade6974d | 333 | ttl, sock); |
d62a17ae | 334 | return -1; |
335 | } | |
336 | return 0; | |
718e3744 | 337 | } |
718e3744 | 338 | #endif /* IP_TTL */ |
d62a17ae | 339 | if (family == AF_INET6) { |
340 | ret = setsockopt(sock, IPPROTO_IPV6, IPV6_UNICAST_HOPS, | |
341 | (void *)&ttl, sizeof(int)); | |
342 | if (ret < 0) { | |
ade6974d | 343 | flog_err( |
450971aa | 344 | EC_LIB_SOCKET, |
ade6974d QY |
345 | "can't set sockopt IPV6_UNICAST_HOPS %d to socket %d", |
346 | ttl, sock); | |
d62a17ae | 347 | return -1; |
348 | } | |
349 | return 0; | |
718e3744 | 350 | } |
d62a17ae | 351 | return 0; |
718e3744 | 352 | } |
353 | ||
d62a17ae | 354 | int sockopt_minttl(int family, int sock, int minttl) |
fa411a21 | 355 | { |
89b6d1f8 | 356 | #ifdef IP_MINTTL |
d62a17ae | 357 | if (family == AF_INET) { |
358 | int ret = setsockopt(sock, IPPROTO_IP, IP_MINTTL, &minttl, | |
359 | sizeof(minttl)); | |
360 | if (ret < 0) | |
ade6974d | 361 | flog_err( |
450971aa | 362 | EC_LIB_SOCKET, |
ade6974d QY |
363 | "can't set sockopt IP_MINTTL to %d on socket %d: %s", |
364 | minttl, sock, safe_strerror(errno)); | |
d62a17ae | 365 | return ret; |
366 | } | |
d876bdf4 | 367 | #endif /* IP_MINTTL */ |
d8dc5257 | 368 | #ifdef IPV6_MINHOPCOUNT |
d62a17ae | 369 | if (family == AF_INET6) { |
370 | int ret = setsockopt(sock, IPPROTO_IPV6, IPV6_MINHOPCOUNT, | |
371 | &minttl, sizeof(minttl)); | |
372 | if (ret < 0) | |
ade6974d | 373 | flog_err( |
450971aa | 374 | EC_LIB_SOCKET, |
ade6974d QY |
375 | "can't set sockopt IPV6_MINHOPCOUNT to %d on socket %d: %s", |
376 | minttl, sock, safe_strerror(errno)); | |
d62a17ae | 377 | return ret; |
378 | } | |
d876bdf4 | 379 | #endif |
fa411a21 | 380 | |
d62a17ae | 381 | errno = EOPNOTSUPP; |
382 | return -1; | |
fa411a21 NH |
383 | } |
384 | ||
d62a17ae | 385 | int sockopt_v6only(int family, int sock) |
ca051269 | 386 | { |
d62a17ae | 387 | int ret, on = 1; |
ca051269 | 388 | |
ca051269 | 389 | #ifdef IPV6_V6ONLY |
d62a17ae | 390 | if (family == AF_INET6) { |
391 | ret = setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY, (void *)&on, | |
392 | sizeof(int)); | |
393 | if (ret < 0) { | |
450971aa | 394 | flog_err(EC_LIB_SOCKET, |
3efd0893 | 395 | "can't set sockopt IPV6_V6ONLY to socket %d", |
1b5e2f89 | 396 | sock); |
d62a17ae | 397 | return -1; |
398 | } | |
399 | return 0; | |
ca051269 | 400 | } |
ca051269 | 401 | #endif /* IPV6_V6ONLY */ |
d62a17ae | 402 | return 0; |
ca051269 DL |
403 | } |
404 | ||
718e3744 | 405 | /* If same family and same prefix return 1. */ |
d62a17ae | 406 | int sockunion_same(const union sockunion *su1, const union sockunion *su2) |
407 | { | |
408 | int ret = 0; | |
409 | ||
410 | if (su1->sa.sa_family != su2->sa.sa_family) | |
411 | return 0; | |
412 | ||
413 | switch (su1->sa.sa_family) { | |
414 | case AF_INET: | |
415 | ret = memcmp(&su1->sin.sin_addr, &su2->sin.sin_addr, | |
416 | sizeof(struct in_addr)); | |
417 | break; | |
418 | case AF_INET6: | |
419 | ret = memcmp(&su1->sin6.sin6_addr, &su2->sin6.sin6_addr, | |
420 | sizeof(struct in6_addr)); | |
421 | if ((ret == 0) && IN6_IS_ADDR_LINKLOCAL(&su1->sin6.sin6_addr)) { | |
422 | /* compare interface indices */ | |
423 | if (su1->sin6.sin6_scope_id && su2->sin6.sin6_scope_id) | |
424 | ret = (su1->sin6.sin6_scope_id | |
425 | == su2->sin6.sin6_scope_id) | |
426 | ? 0 | |
427 | : 1; | |
428 | } | |
429 | break; | |
f2345335 | 430 | } |
d62a17ae | 431 | if (ret == 0) |
432 | return 1; | |
433 | else | |
434 | return 0; | |
718e3744 | 435 | } |
436 | ||
d62a17ae | 437 | unsigned int sockunion_hash(const union sockunion *su) |
7cb5cdbb | 438 | { |
d62a17ae | 439 | switch (sockunion_family(su)) { |
440 | case AF_INET: | |
441 | return jhash_1word(su->sin.sin_addr.s_addr, 0); | |
442 | case AF_INET6: | |
443 | return jhash2(su->sin6.sin6_addr.s6_addr32, | |
7e3a1ec7 | 444 | array_size(su->sin6.sin6_addr.s6_addr32), 0); |
d62a17ae | 445 | } |
446 | return 0; | |
7cb5cdbb TT |
447 | } |
448 | ||
d62a17ae | 449 | size_t family2addrsize(int family) |
95e0999c | 450 | { |
d62a17ae | 451 | switch (family) { |
452 | case AF_INET: | |
453 | return sizeof(struct in_addr); | |
454 | case AF_INET6: | |
455 | return sizeof(struct in6_addr); | |
456 | } | |
457 | return 0; | |
95e0999c TT |
458 | } |
459 | ||
d62a17ae | 460 | size_t sockunion_get_addrlen(const union sockunion *su) |
95e0999c | 461 | { |
d62a17ae | 462 | return family2addrsize(sockunion_family(su)); |
95e0999c TT |
463 | } |
464 | ||
d7c0a89a | 465 | const uint8_t *sockunion_get_addr(const union sockunion *su) |
95e0999c | 466 | { |
d62a17ae | 467 | switch (sockunion_family(su)) { |
468 | case AF_INET: | |
d7c0a89a | 469 | return (const uint8_t *)&su->sin.sin_addr.s_addr; |
d62a17ae | 470 | case AF_INET6: |
d7c0a89a | 471 | return (const uint8_t *)&su->sin6.sin6_addr; |
d62a17ae | 472 | } |
473 | return NULL; | |
95e0999c TT |
474 | } |
475 | ||
d7c0a89a | 476 | void sockunion_set(union sockunion *su, int family, const uint8_t *addr, |
d62a17ae | 477 | size_t bytes) |
95e0999c | 478 | { |
d62a17ae | 479 | if (family2addrsize(family) != bytes) |
480 | return; | |
95e0999c | 481 | |
d62a17ae | 482 | sockunion_family(su) = family; |
483 | switch (family) { | |
484 | case AF_INET: | |
485 | memcpy(&su->sin.sin_addr.s_addr, addr, bytes); | |
486 | break; | |
487 | case AF_INET6: | |
488 | memcpy(&su->sin6.sin6_addr, addr, bytes); | |
489 | break; | |
490 | } | |
95e0999c TT |
491 | } |
492 | ||
718e3744 | 493 | /* After TCP connection is established. Get local address and port. */ |
d62a17ae | 494 | union sockunion *sockunion_getsockname(int fd) |
495 | { | |
496 | int ret; | |
497 | socklen_t len; | |
498 | union { | |
499 | struct sockaddr sa; | |
500 | struct sockaddr_in sin; | |
501 | struct sockaddr_in6 sin6; | |
502 | char tmp_buffer[128]; | |
503 | } name; | |
504 | union sockunion *su; | |
505 | ||
0d6f7fd6 DA |
506 | memset(&name, 0, sizeof(name)); |
507 | len = sizeof(name); | |
d62a17ae | 508 | |
509 | ret = getsockname(fd, (struct sockaddr *)&name, &len); | |
510 | if (ret < 0) { | |
450971aa | 511 | flog_err(EC_LIB_SOCKET, |
1b5e2f89 DS |
512 | "Can't get local address and port by getsockname: %s", |
513 | safe_strerror(errno)); | |
d62a17ae | 514 | return NULL; |
515 | } | |
516 | ||
517 | if (name.sa.sa_family == AF_INET) { | |
518 | su = XCALLOC(MTYPE_SOCKUNION, sizeof(union sockunion)); | |
519 | memcpy(su, &name, sizeof(struct sockaddr_in)); | |
520 | return su; | |
521 | } | |
522 | if (name.sa.sa_family == AF_INET6) { | |
523 | su = XCALLOC(MTYPE_SOCKUNION, sizeof(union sockunion)); | |
524 | memcpy(su, &name, sizeof(struct sockaddr_in6)); | |
525 | sockunion_normalise_mapped(su); | |
526 | return su; | |
527 | } | |
528 | return NULL; | |
718e3744 | 529 | } |
530 | ||
531 | /* After TCP connection is established. Get remote address and port. */ | |
d62a17ae | 532 | union sockunion *sockunion_getpeername(int fd) |
533 | { | |
534 | int ret; | |
535 | socklen_t len; | |
536 | union { | |
537 | struct sockaddr sa; | |
538 | struct sockaddr_in sin; | |
539 | struct sockaddr_in6 sin6; | |
540 | char tmp_buffer[128]; | |
541 | } name; | |
542 | union sockunion *su; | |
543 | ||
0d6f7fd6 DA |
544 | memset(&name, 0, sizeof(name)); |
545 | len = sizeof(name); | |
d62a17ae | 546 | ret = getpeername(fd, (struct sockaddr *)&name, &len); |
547 | if (ret < 0) { | |
1c50c1c0 | 548 | flog_err(EC_LIB_SOCKET, "Can't get remote address and port: %s", |
1b5e2f89 | 549 | safe_strerror(errno)); |
d62a17ae | 550 | return NULL; |
551 | } | |
552 | ||
553 | if (name.sa.sa_family == AF_INET) { | |
554 | su = XCALLOC(MTYPE_SOCKUNION, sizeof(union sockunion)); | |
555 | memcpy(su, &name, sizeof(struct sockaddr_in)); | |
556 | return su; | |
557 | } | |
558 | if (name.sa.sa_family == AF_INET6) { | |
559 | su = XCALLOC(MTYPE_SOCKUNION, sizeof(union sockunion)); | |
560 | memcpy(su, &name, sizeof(struct sockaddr_in6)); | |
561 | sockunion_normalise_mapped(su); | |
562 | return su; | |
563 | } | |
564 | return NULL; | |
718e3744 | 565 | } |
566 | ||
567 | /* Print sockunion structure */ | |
d62a17ae | 568 | static void __attribute__((unused)) sockunion_print(const union sockunion *su) |
569 | { | |
570 | if (su == NULL) | |
571 | return; | |
572 | ||
573 | switch (su->sa.sa_family) { | |
574 | case AF_INET: | |
af3b34f6 DA |
575 | printf("%pI4\n", &su->sin.sin_addr); |
576 | break; | |
577 | case AF_INET6: | |
578 | printf("%pI6\n", &su->sin6.sin6_addr); | |
d62a17ae | 579 | break; |
718e3744 | 580 | #ifdef AF_LINK |
d62a17ae | 581 | case AF_LINK: { |
582 | struct sockaddr_dl *sdl; | |
583 | ||
584 | sdl = (struct sockaddr_dl *)&(su->sa); | |
585 | printf("link#%d\n", sdl->sdl_index); | |
586 | } break; | |
718e3744 | 587 | #endif /* AF_LINK */ |
d62a17ae | 588 | default: |
589 | printf("af_unknown %d\n", su->sa.sa_family); | |
590 | break; | |
591 | } | |
718e3744 | 592 | } |
593 | ||
62510c09 | 594 | int in6addr_cmp(const struct in6_addr *addr1, const struct in6_addr *addr2) |
718e3744 | 595 | { |
d62a17ae | 596 | unsigned int i; |
d7c0a89a | 597 | const uint8_t *p1, *p2; |
718e3744 | 598 | |
d7c0a89a QY |
599 | p1 = (const uint8_t *)addr1; |
600 | p2 = (const uint8_t *)addr2; | |
718e3744 | 601 | |
d62a17ae | 602 | for (i = 0; i < sizeof(struct in6_addr); i++) { |
603 | if (p1[i] > p2[i]) | |
604 | return 1; | |
605 | else if (p1[i] < p2[i]) | |
606 | return -1; | |
607 | } | |
608 | return 0; | |
718e3744 | 609 | } |
718e3744 | 610 | |
d62a17ae | 611 | int sockunion_cmp(const union sockunion *su1, const union sockunion *su2) |
718e3744 | 612 | { |
d62a17ae | 613 | if (su1->sa.sa_family > su2->sa.sa_family) |
614 | return 1; | |
615 | if (su1->sa.sa_family < su2->sa.sa_family) | |
616 | return -1; | |
718e3744 | 617 | |
d62a17ae | 618 | if (su1->sa.sa_family == AF_INET) { |
619 | if (ntohl(sockunion2ip(su1)) == ntohl(sockunion2ip(su2))) | |
620 | return 0; | |
621 | if (ntohl(sockunion2ip(su1)) > ntohl(sockunion2ip(su2))) | |
622 | return 1; | |
623 | else | |
624 | return -1; | |
625 | } | |
626 | if (su1->sa.sa_family == AF_INET6) | |
627 | return in6addr_cmp(&su1->sin6.sin6_addr, &su2->sin6.sin6_addr); | |
718e3744 | 628 | return 0; |
718e3744 | 629 | } |
630 | ||
631 | /* Duplicate sockunion. */ | |
d62a17ae | 632 | union sockunion *sockunion_dup(const union sockunion *su) |
718e3744 | 633 | { |
d62a17ae | 634 | union sockunion *dup = |
635 | XCALLOC(MTYPE_SOCKUNION, sizeof(union sockunion)); | |
636 | memcpy(dup, su, sizeof(union sockunion)); | |
637 | return dup; | |
718e3744 | 638 | } |
639 | ||
d62a17ae | 640 | void sockunion_free(union sockunion *su) |
718e3744 | 641 | { |
d62a17ae | 642 | XFREE(MTYPE_SOCKUNION, su); |
718e3744 | 643 | } |
dd793e4a | 644 | |
d62a17ae | 645 | void sockunion_init(union sockunion *su) |
dd793e4a | 646 | { |
d62a17ae | 647 | memset(su, 0, sizeof(union sockunion)); |
dd793e4a | 648 | } |
02f686ff | 649 | |
54929fd3 | 650 | printfrr_ext_autoreg_p("SU", printfrr_psu); |
3ea79430 DL |
651 | static ssize_t printfrr_psu(struct fbuf *buf, struct printfrr_eargs *ea, |
652 | const void *ptr) | |
02f686ff DL |
653 | { |
654 | const union sockunion *su = ptr; | |
94f78404 | 655 | bool include_port = false, include_scope = false; |
02f686ff | 656 | bool endflags = false; |
212e04e5 DL |
657 | ssize_t ret = 0; |
658 | char cbuf[INET6_ADDRSTRLEN]; | |
659 | ||
660 | if (!su) | |
eba599a3 | 661 | return bputs(buf, "(null)"); |
212e04e5 DL |
662 | |
663 | while (!endflags) { | |
3ea79430 | 664 | switch (*ea->fmt) { |
212e04e5 | 665 | case 'p': |
3ea79430 | 666 | ea->fmt++; |
212e04e5 | 667 | include_port = true; |
02f686ff | 668 | break; |
94f78404 DL |
669 | case 's': |
670 | ea->fmt++; | |
671 | include_scope = true; | |
672 | break; | |
8e2c653e | 673 | default: |
212e04e5 DL |
674 | endflags = true; |
675 | break; | |
02f686ff | 676 | } |
212e04e5 | 677 | } |
02f686ff | 678 | |
212e04e5 DL |
679 | switch (sockunion_family(su)) { |
680 | case AF_UNSPEC: | |
681 | ret += bputs(buf, "(unspec)"); | |
682 | break; | |
683 | case AF_INET: | |
684 | inet_ntop(AF_INET, &su->sin.sin_addr, cbuf, sizeof(cbuf)); | |
685 | ret += bputs(buf, cbuf); | |
686 | if (include_port) | |
94f78404 | 687 | ret += bprintfrr(buf, ":%d", ntohs(su->sin.sin_port)); |
212e04e5 DL |
688 | break; |
689 | case AF_INET6: | |
94f78404 DL |
690 | if (include_port) |
691 | ret += bputch(buf, '['); | |
212e04e5 DL |
692 | inet_ntop(AF_INET6, &su->sin6.sin6_addr, cbuf, sizeof(cbuf)); |
693 | ret += bputs(buf, cbuf); | |
94f78404 DL |
694 | if (include_scope && su->sin6.sin6_scope_id) |
695 | ret += bprintfrr(buf, "%%%u", | |
696 | (unsigned int)su->sin6.sin6_scope_id); | |
212e04e5 | 697 | if (include_port) |
94f78404 DL |
698 | ret += bprintfrr(buf, "]:%d", |
699 | ntohs(su->sin6.sin6_port)); | |
700 | break; | |
701 | case AF_UNIX: { | |
702 | int len; | |
703 | #ifdef __linux__ | |
704 | if (su->sun.sun_path[0] == '\0' && su->sun.sun_path[1]) { | |
705 | len = strnlen(su->sun.sun_path + 1, | |
706 | sizeof(su->sun.sun_path) - 1); | |
707 | ret += bprintfrr(buf, "@%*pSE", len, | |
708 | su->sun.sun_path + 1); | |
709 | break; | |
710 | } | |
711 | #endif | |
712 | len = strnlen(su->sun.sun_path, sizeof(su->sun.sun_path)); | |
713 | ret += bprintfrr(buf, "%*pSE", len, su->sun.sun_path); | |
212e04e5 | 714 | break; |
94f78404 | 715 | } |
212e04e5 DL |
716 | default: |
717 | ret += bprintfrr(buf, "(af %d)", sockunion_family(su)); | |
02f686ff DL |
718 | } |
719 | ||
212e04e5 | 720 | return ret; |
02f686ff | 721 | } |
ddd8d8c8 GG |
722 | |
723 | int sockunion_is_null(const union sockunion *su) | |
724 | { | |
725 | unsigned char null_s6_addr[16] = {0}; | |
726 | ||
727 | switch (sockunion_family(su)) { | |
728 | case AF_UNSPEC: | |
729 | return 1; | |
730 | case AF_INET: | |
731 | return (su->sin.sin_addr.s_addr == 0); | |
732 | case AF_INET6: | |
733 | return !memcmp(su->sin6.sin6_addr.s6_addr, null_s6_addr, | |
734 | sizeof(null_s6_addr)); | |
735 | default: | |
736 | return 0; | |
737 | } | |
738 | } | |
7b183fd8 | 739 | |
54929fd3 | 740 | printfrr_ext_autoreg_i("PF", printfrr_pf); |
7b183fd8 DL |
741 | static ssize_t printfrr_pf(struct fbuf *buf, struct printfrr_eargs *ea, |
742 | uintmax_t val) | |
743 | { | |
744 | switch (val) { | |
745 | case AF_INET: | |
746 | return bputs(buf, "AF_INET"); | |
747 | case AF_INET6: | |
748 | return bputs(buf, "AF_INET6"); | |
749 | case AF_UNIX: | |
750 | return bputs(buf, "AF_UNIX"); | |
751 | #ifdef AF_PACKET | |
752 | case AF_PACKET: | |
753 | return bputs(buf, "AF_PACKET"); | |
754 | #endif | |
755 | #ifdef AF_NETLINK | |
756 | case AF_NETLINK: | |
757 | return bputs(buf, "AF_NETLINK"); | |
758 | #endif | |
759 | } | |
760 | return bprintfrr(buf, "AF_(%ju)", val); | |
761 | } | |
762 | ||
54929fd3 | 763 | printfrr_ext_autoreg_i("SO", printfrr_so); |
7b183fd8 DL |
764 | static ssize_t printfrr_so(struct fbuf *buf, struct printfrr_eargs *ea, |
765 | uintmax_t val) | |
766 | { | |
767 | switch (val) { | |
768 | case SOCK_STREAM: | |
769 | return bputs(buf, "SOCK_STREAM"); | |
770 | case SOCK_DGRAM: | |
771 | return bputs(buf, "SOCK_DGRAM"); | |
772 | case SOCK_SEQPACKET: | |
773 | return bputs(buf, "SOCK_SEQPACKET"); | |
774 | #ifdef SOCK_RAW | |
775 | case SOCK_RAW: | |
776 | return bputs(buf, "SOCK_RAW"); | |
777 | #endif | |
778 | #ifdef SOCK_PACKET | |
779 | case SOCK_PACKET: | |
780 | return bputs(buf, "SOCK_PACKET"); | |
781 | #endif | |
782 | } | |
783 | return bprintfrr(buf, "SOCK_(%ju)", val); | |
784 | } |