Alexandre Lision | 8af73cb | 2013-12-10 14:11:20 -0500 | [diff] [blame] | 1 | /* $Id$ */ |
| 2 | /* |
| 3 | * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com) |
| 4 | * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | */ |
| 20 | #include <pj/sock.h> |
| 21 | #include <pj/assert.h> |
| 22 | #include <pj/ctype.h> |
| 23 | #include <pj/errno.h> |
| 24 | #include <pj/ip_helper.h> |
| 25 | #include <pj/os.h> |
| 26 | #include <pj/addr_resolv.h> |
| 27 | #include <pj/rand.h> |
| 28 | #include <pj/string.h> |
| 29 | #include <pj/compat/socket.h> |
| 30 | |
| 31 | #if 0 |
| 32 | /* Enable some tracing */ |
| 33 | #include <pj/log.h> |
| 34 | #define THIS_FILE "sock_common.c" |
| 35 | #define TRACE_(arg) PJ_LOG(4,arg) |
| 36 | #else |
| 37 | #define TRACE_(arg) |
| 38 | #endif |
| 39 | |
| 40 | |
| 41 | /* |
| 42 | * Convert address string with numbers and dots to binary IP address. |
| 43 | */ |
| 44 | PJ_DEF(pj_in_addr) pj_inet_addr(const pj_str_t *cp) |
| 45 | { |
| 46 | pj_in_addr addr; |
| 47 | |
| 48 | pj_inet_aton(cp, &addr); |
| 49 | return addr; |
| 50 | } |
| 51 | |
| 52 | /* |
| 53 | * Convert address string with numbers and dots to binary IP address. |
| 54 | */ |
| 55 | PJ_DEF(pj_in_addr) pj_inet_addr2(const char *cp) |
| 56 | { |
| 57 | pj_str_t str = pj_str((char*)cp); |
| 58 | return pj_inet_addr(&str); |
| 59 | } |
| 60 | |
| 61 | /* |
| 62 | * Get text representation. |
| 63 | */ |
| 64 | PJ_DEF(char*) pj_inet_ntop2( int af, const void *src, |
| 65 | char *dst, int size) |
| 66 | { |
| 67 | pj_status_t status; |
| 68 | |
| 69 | status = pj_inet_ntop(af, src, dst, size); |
| 70 | return (status==PJ_SUCCESS)? dst : NULL; |
| 71 | } |
| 72 | |
| 73 | /* |
| 74 | * Print socket address. |
| 75 | */ |
| 76 | PJ_DEF(char*) pj_sockaddr_print( const pj_sockaddr_t *addr, |
| 77 | char *buf, int size, |
| 78 | unsigned flags) |
| 79 | { |
| 80 | enum { |
| 81 | WITH_PORT = 1, |
| 82 | WITH_BRACKETS = 2 |
| 83 | }; |
| 84 | |
| 85 | char txt[PJ_INET6_ADDRSTRLEN]; |
| 86 | char port[32]; |
| 87 | const pj_addr_hdr *h = (const pj_addr_hdr*)addr; |
| 88 | char *bquote, *equote; |
| 89 | pj_status_t status; |
| 90 | |
| 91 | status = pj_inet_ntop(h->sa_family, pj_sockaddr_get_addr(addr), |
| 92 | txt, sizeof(txt)); |
| 93 | if (status != PJ_SUCCESS) |
| 94 | return ""; |
| 95 | |
| 96 | if (h->sa_family != PJ_AF_INET6 || (flags & WITH_BRACKETS)==0) { |
| 97 | bquote = ""; equote = ""; |
| 98 | } else { |
| 99 | bquote = "["; equote = "]"; |
| 100 | } |
| 101 | |
| 102 | if (flags & WITH_PORT) { |
| 103 | pj_ansi_snprintf(port, sizeof(port), ":%d", |
| 104 | pj_sockaddr_get_port(addr)); |
| 105 | } else { |
| 106 | port[0] = '\0'; |
| 107 | } |
| 108 | |
| 109 | pj_ansi_snprintf(buf, size, "%s%s%s%s", |
| 110 | bquote, txt, equote, port); |
| 111 | |
| 112 | return buf; |
| 113 | } |
| 114 | |
| 115 | /* |
| 116 | * Set the IP address of an IP socket address from string address, |
| 117 | * with resolving the host if necessary. The string address may be in a |
| 118 | * standard numbers and dots notation or may be a hostname. If hostname |
| 119 | * is specified, then the function will resolve the host into the IP |
| 120 | * address. |
| 121 | */ |
| 122 | PJ_DEF(pj_status_t) pj_sockaddr_in_set_str_addr( pj_sockaddr_in *addr, |
| 123 | const pj_str_t *str_addr) |
| 124 | { |
| 125 | PJ_CHECK_STACK(); |
| 126 | |
| 127 | PJ_ASSERT_RETURN(!str_addr || str_addr->slen < PJ_MAX_HOSTNAME, |
| 128 | (addr->sin_addr.s_addr=PJ_INADDR_NONE, PJ_EINVAL)); |
| 129 | |
| 130 | PJ_SOCKADDR_RESET_LEN(addr); |
| 131 | addr->sin_family = AF_INET; |
| 132 | pj_bzero(addr->sin_zero, sizeof(addr->sin_zero)); |
| 133 | |
| 134 | if (str_addr && str_addr->slen) { |
| 135 | addr->sin_addr = pj_inet_addr(str_addr); |
| 136 | if (addr->sin_addr.s_addr == PJ_INADDR_NONE) { |
| 137 | pj_hostent he; |
| 138 | pj_status_t rc; |
| 139 | |
| 140 | rc = pj_gethostbyname(str_addr, &he); |
| 141 | if (rc == 0) { |
| 142 | addr->sin_addr.s_addr = *(pj_uint32_t*)he.h_addr; |
| 143 | } else { |
| 144 | addr->sin_addr.s_addr = PJ_INADDR_NONE; |
| 145 | return rc; |
| 146 | } |
| 147 | } |
| 148 | |
| 149 | } else { |
| 150 | addr->sin_addr.s_addr = 0; |
| 151 | } |
| 152 | |
| 153 | return PJ_SUCCESS; |
| 154 | } |
| 155 | |
| 156 | /* Set address from a name */ |
| 157 | PJ_DEF(pj_status_t) pj_sockaddr_set_str_addr(int af, |
| 158 | pj_sockaddr *addr, |
| 159 | const pj_str_t *str_addr) |
| 160 | { |
| 161 | pj_status_t status; |
| 162 | |
| 163 | if (af == PJ_AF_INET) { |
| 164 | return pj_sockaddr_in_set_str_addr(&addr->ipv4, str_addr); |
| 165 | } |
| 166 | |
| 167 | PJ_ASSERT_RETURN(af==PJ_AF_INET6, PJ_EAFNOTSUP); |
| 168 | |
| 169 | /* IPv6 specific */ |
| 170 | |
| 171 | addr->ipv6.sin6_family = PJ_AF_INET6; |
| 172 | PJ_SOCKADDR_RESET_LEN(addr); |
| 173 | |
| 174 | if (str_addr && str_addr->slen) { |
| 175 | status = pj_inet_pton(PJ_AF_INET6, str_addr, &addr->ipv6.sin6_addr); |
| 176 | if (status != PJ_SUCCESS) { |
| 177 | pj_addrinfo ai; |
| 178 | unsigned count = 1; |
| 179 | |
| 180 | status = pj_getaddrinfo(PJ_AF_INET6, str_addr, &count, &ai); |
| 181 | if (status==PJ_SUCCESS) { |
| 182 | pj_memcpy(&addr->ipv6.sin6_addr, &ai.ai_addr.ipv6.sin6_addr, |
| 183 | sizeof(pj_sockaddr_in6)); |
| 184 | } |
| 185 | } |
| 186 | } else { |
| 187 | status = PJ_SUCCESS; |
| 188 | } |
| 189 | |
| 190 | return status; |
| 191 | } |
| 192 | |
| 193 | /* |
| 194 | * Set the IP address and port of an IP socket address. |
| 195 | * The string address may be in a standard numbers and dots notation or |
| 196 | * may be a hostname. If hostname is specified, then the function will |
| 197 | * resolve the host into the IP address. |
| 198 | */ |
| 199 | PJ_DEF(pj_status_t) pj_sockaddr_in_init( pj_sockaddr_in *addr, |
| 200 | const pj_str_t *str_addr, |
| 201 | pj_uint16_t port) |
| 202 | { |
| 203 | PJ_ASSERT_RETURN(addr, (addr->sin_addr.s_addr=PJ_INADDR_NONE, PJ_EINVAL)); |
| 204 | |
| 205 | PJ_SOCKADDR_RESET_LEN(addr); |
| 206 | addr->sin_family = PJ_AF_INET; |
| 207 | pj_bzero(addr->sin_zero, sizeof(addr->sin_zero)); |
| 208 | pj_sockaddr_in_set_port(addr, port); |
| 209 | return pj_sockaddr_in_set_str_addr(addr, str_addr); |
| 210 | } |
| 211 | |
| 212 | /* |
| 213 | * Initialize IP socket address based on the address and port info. |
| 214 | */ |
| 215 | PJ_DEF(pj_status_t) pj_sockaddr_init(int af, |
| 216 | pj_sockaddr *addr, |
| 217 | const pj_str_t *cp, |
| 218 | pj_uint16_t port) |
| 219 | { |
| 220 | pj_status_t status; |
| 221 | |
| 222 | if (af == PJ_AF_INET) { |
| 223 | return pj_sockaddr_in_init(&addr->ipv4, cp, port); |
| 224 | } |
| 225 | |
| 226 | /* IPv6 specific */ |
| 227 | PJ_ASSERT_RETURN(af==PJ_AF_INET6, PJ_EAFNOTSUP); |
| 228 | |
| 229 | pj_bzero(addr, sizeof(pj_sockaddr_in6)); |
| 230 | addr->addr.sa_family = PJ_AF_INET6; |
| 231 | |
| 232 | status = pj_sockaddr_set_str_addr(af, addr, cp); |
| 233 | if (status != PJ_SUCCESS) |
| 234 | return status; |
| 235 | |
| 236 | addr->ipv6.sin6_port = pj_htons(port); |
| 237 | return PJ_SUCCESS; |
| 238 | } |
| 239 | |
| 240 | /* |
| 241 | * Compare two socket addresses. |
| 242 | */ |
| 243 | PJ_DEF(int) pj_sockaddr_cmp( const pj_sockaddr_t *addr1, |
| 244 | const pj_sockaddr_t *addr2) |
| 245 | { |
| 246 | const pj_sockaddr *a1 = (const pj_sockaddr*) addr1; |
| 247 | const pj_sockaddr *a2 = (const pj_sockaddr*) addr2; |
| 248 | int port1, port2; |
| 249 | int result; |
| 250 | |
| 251 | /* Compare address family */ |
| 252 | if (a1->addr.sa_family < a2->addr.sa_family) |
| 253 | return -1; |
| 254 | else if (a1->addr.sa_family > a2->addr.sa_family) |
| 255 | return 1; |
| 256 | |
| 257 | /* Compare addresses */ |
| 258 | result = pj_memcmp(pj_sockaddr_get_addr(a1), |
| 259 | pj_sockaddr_get_addr(a2), |
| 260 | pj_sockaddr_get_addr_len(a1)); |
| 261 | if (result != 0) |
| 262 | return result; |
| 263 | |
| 264 | /* Compare port number */ |
| 265 | port1 = pj_sockaddr_get_port(a1); |
| 266 | port2 = pj_sockaddr_get_port(a2); |
| 267 | |
| 268 | if (port1 < port2) |
| 269 | return -1; |
| 270 | else if (port1 > port2) |
| 271 | return 1; |
| 272 | |
| 273 | /* TODO: |
| 274 | * Do we need to compare flow label and scope id in IPv6? |
| 275 | */ |
| 276 | |
| 277 | /* Looks equal */ |
| 278 | return 0; |
| 279 | } |
| 280 | |
| 281 | /* |
| 282 | * Get first IP address associated with the hostname. |
| 283 | */ |
| 284 | PJ_DEF(pj_in_addr) pj_gethostaddr(void) |
| 285 | { |
| 286 | pj_sockaddr_in addr; |
| 287 | const pj_str_t *hostname = pj_gethostname(); |
| 288 | |
| 289 | pj_sockaddr_in_set_str_addr(&addr, hostname); |
| 290 | return addr.sin_addr; |
| 291 | } |
| 292 | |
| 293 | /* |
| 294 | * Get port number of a pj_sockaddr_in |
| 295 | */ |
| 296 | PJ_DEF(pj_uint16_t) pj_sockaddr_in_get_port(const pj_sockaddr_in *addr) |
| 297 | { |
| 298 | return pj_ntohs(addr->sin_port); |
| 299 | } |
| 300 | |
| 301 | /* |
| 302 | * Get the address part |
| 303 | */ |
| 304 | PJ_DEF(void*) pj_sockaddr_get_addr(const pj_sockaddr_t *addr) |
| 305 | { |
| 306 | const pj_sockaddr *a = (const pj_sockaddr*)addr; |
| 307 | |
| 308 | PJ_ASSERT_RETURN(a->addr.sa_family == PJ_AF_INET || |
| 309 | a->addr.sa_family == PJ_AF_INET6, NULL); |
| 310 | |
| 311 | if (a->addr.sa_family == PJ_AF_INET6) |
| 312 | return (void*) &a->ipv6.sin6_addr; |
| 313 | else |
| 314 | return (void*) &a->ipv4.sin_addr; |
| 315 | } |
| 316 | |
| 317 | /* |
| 318 | * Check if sockaddr contains a non-zero address |
| 319 | */ |
| 320 | PJ_DEF(pj_bool_t) pj_sockaddr_has_addr(const pj_sockaddr_t *addr) |
| 321 | { |
| 322 | const pj_sockaddr *a = (const pj_sockaddr*)addr; |
| 323 | |
| 324 | /* It's probably not wise to raise assertion here if |
| 325 | * the address doesn't contain a valid address family, and |
| 326 | * just return PJ_FALSE instead. |
| 327 | * |
| 328 | * The reason is because application may need to distinguish |
| 329 | * these three conditions with sockaddr: |
| 330 | * a) sockaddr is not initialized. This is by convention |
| 331 | * indicated by sa_family==0. |
| 332 | * b) sockaddr is initialized with zero address. This is |
| 333 | * indicated with the address field having zero address. |
| 334 | * c) sockaddr is initialized with valid address/port. |
| 335 | * |
| 336 | * If we enable this assertion, then application will loose |
| 337 | * the capability to specify condition a), since it will be |
| 338 | * forced to always initialize sockaddr (even with zero address). |
| 339 | * This may break some parts of upper layer libraries. |
| 340 | */ |
| 341 | //PJ_ASSERT_RETURN(a->addr.sa_family == PJ_AF_INET || |
| 342 | // a->addr.sa_family == PJ_AF_INET6, PJ_FALSE); |
| 343 | |
| 344 | if (a->addr.sa_family!=PJ_AF_INET && a->addr.sa_family!=PJ_AF_INET6) { |
| 345 | return PJ_FALSE; |
| 346 | } else if (a->addr.sa_family == PJ_AF_INET6) { |
| 347 | pj_uint8_t zero[24]; |
| 348 | pj_bzero(zero, sizeof(zero)); |
| 349 | return pj_memcmp(a->ipv6.sin6_addr.s6_addr, zero, |
| 350 | sizeof(pj_in6_addr)) != 0; |
| 351 | } else |
| 352 | return a->ipv4.sin_addr.s_addr != PJ_INADDR_ANY; |
| 353 | } |
| 354 | |
| 355 | /* |
| 356 | * Get port number |
| 357 | */ |
| 358 | PJ_DEF(pj_uint16_t) pj_sockaddr_get_port(const pj_sockaddr_t *addr) |
| 359 | { |
| 360 | const pj_sockaddr *a = (const pj_sockaddr*) addr; |
| 361 | |
| 362 | PJ_ASSERT_RETURN(a->addr.sa_family == PJ_AF_INET || |
| 363 | a->addr.sa_family == PJ_AF_INET6, (pj_uint16_t)0xFFFF); |
| 364 | |
| 365 | return pj_ntohs((pj_uint16_t)(a->addr.sa_family == PJ_AF_INET6 ? |
| 366 | a->ipv6.sin6_port : a->ipv4.sin_port)); |
| 367 | } |
| 368 | |
| 369 | /* |
| 370 | * Get the length of the address part. |
| 371 | */ |
| 372 | PJ_DEF(unsigned) pj_sockaddr_get_addr_len(const pj_sockaddr_t *addr) |
| 373 | { |
| 374 | const pj_sockaddr *a = (const pj_sockaddr*) addr; |
| 375 | PJ_ASSERT_RETURN(a->addr.sa_family == PJ_AF_INET || |
| 376 | a->addr.sa_family == PJ_AF_INET6, 0); |
| 377 | return a->addr.sa_family == PJ_AF_INET6 ? |
| 378 | sizeof(pj_in6_addr) : sizeof(pj_in_addr); |
| 379 | } |
| 380 | |
| 381 | /* |
| 382 | * Get socket address length. |
| 383 | */ |
| 384 | PJ_DEF(unsigned) pj_sockaddr_get_len(const pj_sockaddr_t *addr) |
| 385 | { |
| 386 | const pj_sockaddr *a = (const pj_sockaddr*) addr; |
| 387 | PJ_ASSERT_RETURN(a->addr.sa_family == PJ_AF_INET || |
| 388 | a->addr.sa_family == PJ_AF_INET6, 0); |
| 389 | return a->addr.sa_family == PJ_AF_INET6 ? |
| 390 | sizeof(pj_sockaddr_in6) : sizeof(pj_sockaddr_in); |
| 391 | } |
| 392 | |
| 393 | /* |
| 394 | * Copy only the address part (sin_addr/sin6_addr) of a socket address. |
| 395 | */ |
| 396 | PJ_DEF(void) pj_sockaddr_copy_addr( pj_sockaddr *dst, |
| 397 | const pj_sockaddr *src) |
| 398 | { |
| 399 | /* Destination sockaddr might not be initialized */ |
| 400 | const char *srcbuf = (char*)pj_sockaddr_get_addr(src); |
| 401 | char *dstbuf = ((char*)dst) + (srcbuf - (char*)src); |
| 402 | pj_memcpy(dstbuf, srcbuf, pj_sockaddr_get_addr_len(src)); |
| 403 | } |
| 404 | |
| 405 | /* |
| 406 | * Copy socket address. |
| 407 | */ |
| 408 | PJ_DEF(void) pj_sockaddr_cp(pj_sockaddr_t *dst, const pj_sockaddr_t *src) |
| 409 | { |
| 410 | pj_memcpy(dst, src, pj_sockaddr_get_len(src)); |
| 411 | } |
| 412 | |
| 413 | /* |
| 414 | * Set port number of pj_sockaddr_in |
| 415 | */ |
| 416 | PJ_DEF(void) pj_sockaddr_in_set_port(pj_sockaddr_in *addr, |
| 417 | pj_uint16_t hostport) |
| 418 | { |
| 419 | addr->sin_port = pj_htons(hostport); |
| 420 | } |
| 421 | |
| 422 | /* |
| 423 | * Set port number of pj_sockaddr |
| 424 | */ |
| 425 | PJ_DEF(pj_status_t) pj_sockaddr_set_port(pj_sockaddr *addr, |
| 426 | pj_uint16_t hostport) |
| 427 | { |
| 428 | int af = addr->addr.sa_family; |
| 429 | |
| 430 | PJ_ASSERT_RETURN(af==PJ_AF_INET || af==PJ_AF_INET6, PJ_EINVAL); |
| 431 | |
| 432 | if (af == PJ_AF_INET6) |
| 433 | addr->ipv6.sin6_port = pj_htons(hostport); |
| 434 | else |
| 435 | addr->ipv4.sin_port = pj_htons(hostport); |
| 436 | |
| 437 | return PJ_SUCCESS; |
| 438 | } |
| 439 | |
| 440 | /* |
| 441 | * Get IPv4 address |
| 442 | */ |
| 443 | PJ_DEF(pj_in_addr) pj_sockaddr_in_get_addr(const pj_sockaddr_in *addr) |
| 444 | { |
| 445 | pj_in_addr in_addr; |
| 446 | in_addr.s_addr = pj_ntohl(addr->sin_addr.s_addr); |
| 447 | return in_addr; |
| 448 | } |
| 449 | |
| 450 | /* |
| 451 | * Set IPv4 address |
| 452 | */ |
| 453 | PJ_DEF(void) pj_sockaddr_in_set_addr(pj_sockaddr_in *addr, |
| 454 | pj_uint32_t hostaddr) |
| 455 | { |
| 456 | addr->sin_addr.s_addr = pj_htonl(hostaddr); |
| 457 | } |
| 458 | |
| 459 | /* |
| 460 | * Parse address |
| 461 | */ |
| 462 | PJ_DEF(pj_status_t) pj_sockaddr_parse2(int af, unsigned options, |
| 463 | const pj_str_t *str, |
| 464 | pj_str_t *p_hostpart, |
| 465 | pj_uint16_t *p_port, |
| 466 | int *raf) |
| 467 | { |
| 468 | const char *end = str->ptr + str->slen; |
| 469 | const char *last_colon_pos = NULL; |
| 470 | unsigned colon_cnt = 0; |
| 471 | const char *p; |
| 472 | |
| 473 | PJ_ASSERT_RETURN((af==PJ_AF_INET || af==PJ_AF_INET6 || af==PJ_AF_UNSPEC) && |
| 474 | options==0 && |
| 475 | str!=NULL, PJ_EINVAL); |
| 476 | |
| 477 | /* Special handling for empty input */ |
| 478 | if (str->slen==0 || str->ptr==NULL) { |
| 479 | if (p_hostpart) |
| 480 | p_hostpart->slen = 0; |
| 481 | if (p_port) |
| 482 | *p_port = 0; |
| 483 | if (raf) |
| 484 | *raf = PJ_AF_INET; |
| 485 | return PJ_SUCCESS; |
| 486 | } |
| 487 | |
| 488 | /* Count the colon and get the last colon */ |
| 489 | for (p=str->ptr; p!=end; ++p) { |
| 490 | if (*p == ':') { |
| 491 | ++colon_cnt; |
| 492 | last_colon_pos = p; |
| 493 | } |
| 494 | } |
| 495 | |
| 496 | /* Deduce address family if it's not given */ |
| 497 | if (af == PJ_AF_UNSPEC) { |
| 498 | if (colon_cnt > 1) |
| 499 | af = PJ_AF_INET6; |
| 500 | else |
| 501 | af = PJ_AF_INET; |
| 502 | } else if (af == PJ_AF_INET && colon_cnt > 1) |
| 503 | return PJ_EINVAL; |
| 504 | |
| 505 | if (raf) |
| 506 | *raf = af; |
| 507 | |
| 508 | if (af == PJ_AF_INET) { |
| 509 | /* Parse as IPv4. Supported formats: |
| 510 | * - "10.0.0.1:80" |
| 511 | * - "10.0.0.1" |
| 512 | * - "10.0.0.1:" |
| 513 | * - ":80" |
| 514 | * - ":" |
| 515 | */ |
| 516 | pj_str_t hostpart; |
| 517 | unsigned long port; |
| 518 | |
| 519 | hostpart.ptr = (char*)str->ptr; |
| 520 | |
| 521 | if (last_colon_pos) { |
| 522 | pj_str_t port_part; |
| 523 | int i; |
| 524 | |
| 525 | hostpart.slen = last_colon_pos - str->ptr; |
| 526 | |
| 527 | port_part.ptr = (char*)last_colon_pos + 1; |
| 528 | port_part.slen = end - port_part.ptr; |
| 529 | |
| 530 | /* Make sure port number is valid */ |
| 531 | for (i=0; i<port_part.slen; ++i) { |
| 532 | if (!pj_isdigit(port_part.ptr[i])) |
| 533 | return PJ_EINVAL; |
| 534 | } |
| 535 | port = pj_strtoul(&port_part); |
| 536 | if (port > 65535) |
| 537 | return PJ_EINVAL; |
| 538 | } else { |
| 539 | hostpart.slen = str->slen; |
| 540 | port = 0; |
| 541 | } |
| 542 | |
| 543 | if (p_hostpart) |
| 544 | *p_hostpart = hostpart; |
| 545 | if (p_port) |
| 546 | *p_port = (pj_uint16_t)port; |
| 547 | |
| 548 | return PJ_SUCCESS; |
| 549 | |
| 550 | } else if (af == PJ_AF_INET6) { |
| 551 | |
| 552 | /* Parse as IPv6. Supported formats: |
| 553 | * - "fe::01:80" ==> note: port number is zero in this case, not 80! |
| 554 | * - "[fe::01]:80" |
| 555 | * - "fe::01" |
| 556 | * - "fe::01:" |
| 557 | * - "[fe::01]" |
| 558 | * - "[fe::01]:" |
| 559 | * - "[::]:80" |
| 560 | * - ":::80" |
| 561 | * - "[::]" |
| 562 | * - "[::]:" |
| 563 | * - ":::" |
| 564 | * - "::" |
| 565 | */ |
| 566 | pj_str_t hostpart, port_part; |
| 567 | |
| 568 | if (*str->ptr == '[') { |
| 569 | char *end_bracket; |
| 570 | int i; |
| 571 | unsigned long port; |
| 572 | |
| 573 | if (last_colon_pos == NULL) |
| 574 | return PJ_EINVAL; |
| 575 | |
| 576 | end_bracket = pj_strchr(str, ']'); |
| 577 | if (end_bracket == NULL) |
| 578 | return PJ_EINVAL; |
| 579 | |
| 580 | hostpart.ptr = (char*)str->ptr + 1; |
| 581 | hostpart.slen = end_bracket - hostpart.ptr; |
| 582 | |
| 583 | if (last_colon_pos < end_bracket) { |
| 584 | port_part.ptr = NULL; |
| 585 | port_part.slen = 0; |
| 586 | } else { |
| 587 | port_part.ptr = (char*)last_colon_pos + 1; |
| 588 | port_part.slen = end - port_part.ptr; |
| 589 | } |
| 590 | |
| 591 | /* Make sure port number is valid */ |
| 592 | for (i=0; i<port_part.slen; ++i) { |
| 593 | if (!pj_isdigit(port_part.ptr[i])) |
| 594 | return PJ_EINVAL; |
| 595 | } |
| 596 | port = pj_strtoul(&port_part); |
| 597 | if (port > 65535) |
| 598 | return PJ_EINVAL; |
| 599 | |
| 600 | if (p_hostpart) |
| 601 | *p_hostpart = hostpart; |
| 602 | if (p_port) |
| 603 | *p_port = (pj_uint16_t)port; |
| 604 | |
| 605 | return PJ_SUCCESS; |
| 606 | |
| 607 | } else { |
| 608 | /* Treat everything as part of the IPv6 IP address */ |
| 609 | if (p_hostpart) |
| 610 | *p_hostpart = *str; |
| 611 | if (p_port) |
| 612 | *p_port = 0; |
| 613 | |
| 614 | return PJ_SUCCESS; |
| 615 | } |
| 616 | |
| 617 | } else { |
| 618 | return PJ_EAFNOTSUP; |
| 619 | } |
| 620 | |
| 621 | } |
| 622 | |
| 623 | /* |
| 624 | * Parse address |
| 625 | */ |
| 626 | PJ_DEF(pj_status_t) pj_sockaddr_parse( int af, unsigned options, |
| 627 | const pj_str_t *str, |
| 628 | pj_sockaddr *addr) |
| 629 | { |
| 630 | pj_str_t hostpart; |
| 631 | pj_uint16_t port; |
| 632 | pj_status_t status; |
| 633 | |
| 634 | PJ_ASSERT_RETURN(addr, PJ_EINVAL); |
| 635 | PJ_ASSERT_RETURN(af==PJ_AF_UNSPEC || |
| 636 | af==PJ_AF_INET || |
| 637 | af==PJ_AF_INET6, PJ_EINVAL); |
| 638 | PJ_ASSERT_RETURN(options == 0, PJ_EINVAL); |
| 639 | |
| 640 | status = pj_sockaddr_parse2(af, options, str, &hostpart, &port, &af); |
| 641 | if (status != PJ_SUCCESS) |
| 642 | return status; |
| 643 | |
| 644 | #if !defined(PJ_HAS_IPV6) || !PJ_HAS_IPV6 |
| 645 | if (af==PJ_AF_INET6) |
| 646 | return PJ_EIPV6NOTSUP; |
| 647 | #endif |
| 648 | |
| 649 | status = pj_sockaddr_init(af, addr, &hostpart, port); |
| 650 | #if defined(PJ_HAS_IPV6) && PJ_HAS_IPV6 |
| 651 | if (status != PJ_SUCCESS && af == PJ_AF_INET6) { |
| 652 | /* Parsing does not yield valid address. Try to treat the last |
| 653 | * portion after the colon as port number. |
| 654 | */ |
| 655 | const char *last_colon_pos=NULL, *p; |
| 656 | const char *end = str->ptr + str->slen; |
| 657 | unsigned long long_port; |
| 658 | pj_str_t port_part; |
| 659 | int i; |
| 660 | |
| 661 | /* Parse as IPv6:port */ |
| 662 | for (p=str->ptr; p!=end; ++p) { |
| 663 | if (*p == ':') |
| 664 | last_colon_pos = p; |
| 665 | } |
| 666 | |
| 667 | if (last_colon_pos == NULL) |
| 668 | return status; |
| 669 | |
| 670 | hostpart.ptr = (char*)str->ptr; |
| 671 | hostpart.slen = last_colon_pos - str->ptr; |
| 672 | |
| 673 | port_part.ptr = (char*)last_colon_pos + 1; |
| 674 | port_part.slen = end - port_part.ptr; |
| 675 | |
| 676 | /* Make sure port number is valid */ |
| 677 | for (i=0; i<port_part.slen; ++i) { |
| 678 | if (!pj_isdigit(port_part.ptr[i])) |
| 679 | return status; |
| 680 | } |
| 681 | long_port = pj_strtoul(&port_part); |
| 682 | if (long_port > 65535) |
| 683 | return status; |
| 684 | |
| 685 | port = (pj_uint16_t)long_port; |
| 686 | |
| 687 | status = pj_sockaddr_init(PJ_AF_INET6, addr, &hostpart, port); |
| 688 | } |
| 689 | #endif |
| 690 | |
| 691 | return status; |
| 692 | } |
| 693 | |
| 694 | /* Resolve the IP address of local machine */ |
| 695 | PJ_DEF(pj_status_t) pj_gethostip(int af, pj_sockaddr *addr) |
| 696 | { |
| 697 | unsigned i, count, cand_cnt; |
| 698 | enum { |
| 699 | CAND_CNT = 8, |
| 700 | |
| 701 | /* Weighting to be applied to found addresses */ |
| 702 | WEIGHT_HOSTNAME = 1, /* hostname IP is not always valid! */ |
| 703 | WEIGHT_DEF_ROUTE = 2, |
| 704 | WEIGHT_INTERFACE = 1, |
| 705 | WEIGHT_LOOPBACK = -5, |
| 706 | WEIGHT_LINK_LOCAL = -4, |
| 707 | WEIGHT_DISABLED = -50, |
| 708 | |
| 709 | MIN_WEIGHT = WEIGHT_DISABLED+1 /* minimum weight to use */ |
| 710 | }; |
| 711 | /* candidates: */ |
| 712 | pj_sockaddr cand_addr[CAND_CNT]; |
| 713 | int cand_weight[CAND_CNT]; |
| 714 | int selected_cand; |
| 715 | char strip[PJ_INET6_ADDRSTRLEN+10]; |
| 716 | /* Special IPv4 addresses. */ |
| 717 | struct spec_ipv4_t |
| 718 | { |
| 719 | pj_uint32_t addr; |
| 720 | pj_uint32_t mask; |
| 721 | int weight; |
| 722 | } spec_ipv4[] = |
| 723 | { |
| 724 | /* 127.0.0.0/8, loopback addr will be used if there is no other |
| 725 | * addresses. |
| 726 | */ |
| 727 | { 0x7f000000, 0xFF000000, WEIGHT_LOOPBACK }, |
| 728 | |
| 729 | /* 0.0.0.0/8, special IP that doesn't seem to be practically useful */ |
| 730 | { 0x00000000, 0xFF000000, WEIGHT_DISABLED }, |
| 731 | |
| 732 | /* 169.254.0.0/16, a zeroconf/link-local address, which has higher |
| 733 | * priority than loopback and will be used if there is no other |
| 734 | * valid addresses. |
| 735 | */ |
| 736 | { 0xa9fe0000, 0xFFFF0000, WEIGHT_LINK_LOCAL } |
| 737 | }; |
| 738 | /* Special IPv6 addresses */ |
| 739 | struct spec_ipv6_t |
| 740 | { |
| 741 | pj_uint8_t addr[16]; |
| 742 | pj_uint8_t mask[16]; |
| 743 | int weight; |
| 744 | } spec_ipv6[] = |
| 745 | { |
| 746 | /* Loopback address, ::1/128 */ |
| 747 | { {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1}, |
| 748 | {0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, |
| 749 | 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff}, |
| 750 | WEIGHT_LOOPBACK |
| 751 | }, |
| 752 | |
| 753 | /* Link local, fe80::/10 */ |
| 754 | { {0xfe,0x80,0,0,0,0,0,0,0,0,0,0,0,0,0,0}, |
| 755 | {0xff,0xc0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}, |
| 756 | WEIGHT_LINK_LOCAL |
| 757 | }, |
| 758 | |
| 759 | /* Disabled, ::/128 */ |
| 760 | { {0x0,0x0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}, |
| 761 | { 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, |
| 762 | 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff}, |
| 763 | WEIGHT_DISABLED |
| 764 | } |
| 765 | }; |
| 766 | pj_addrinfo ai; |
| 767 | pj_status_t status; |
| 768 | |
| 769 | /* May not be used if TRACE_ is disabled */ |
| 770 | PJ_UNUSED_ARG(strip); |
| 771 | |
| 772 | #ifdef _MSC_VER |
| 773 | /* Get rid of "uninitialized he variable" with MS compilers */ |
| 774 | pj_bzero(&ai, sizeof(ai)); |
| 775 | #endif |
| 776 | |
| 777 | cand_cnt = 0; |
| 778 | pj_bzero(cand_addr, sizeof(cand_addr)); |
| 779 | pj_bzero(cand_weight, sizeof(cand_weight)); |
| 780 | for (i=0; i<PJ_ARRAY_SIZE(cand_addr); ++i) { |
| 781 | cand_addr[i].addr.sa_family = (pj_uint16_t)af; |
| 782 | PJ_SOCKADDR_RESET_LEN(&cand_addr[i]); |
| 783 | } |
| 784 | |
| 785 | addr->addr.sa_family = (pj_uint16_t)af; |
| 786 | PJ_SOCKADDR_RESET_LEN(addr); |
| 787 | |
| 788 | #if !defined(PJ_GETHOSTIP_DISABLE_LOCAL_RESOLUTION) || \ |
| 789 | PJ_GETHOSTIP_DISABLE_LOCAL_RESOLUTION == 0 |
| 790 | /* Get hostname's IP address */ |
| 791 | count = 1; |
| 792 | status = pj_getaddrinfo(af, pj_gethostname(), &count, &ai); |
| 793 | if (status == PJ_SUCCESS) { |
| 794 | pj_assert(ai.ai_addr.addr.sa_family == (pj_uint16_t)af); |
| 795 | pj_sockaddr_copy_addr(&cand_addr[cand_cnt], &ai.ai_addr); |
| 796 | pj_sockaddr_set_port(&cand_addr[cand_cnt], 0); |
| 797 | cand_weight[cand_cnt] += WEIGHT_HOSTNAME; |
| 798 | ++cand_cnt; |
| 799 | |
| 800 | TRACE_((THIS_FILE, "hostname IP is %s", |
| 801 | pj_sockaddr_print(&ai.ai_addr, strip, sizeof(strip), 0))); |
| 802 | } |
| 803 | #else |
| 804 | PJ_UNUSED_ARG(ai); |
| 805 | PJ_UNUSED_ARG(count); |
| 806 | #endif |
| 807 | |
| 808 | /* Get default interface (interface for default route) */ |
| 809 | if (cand_cnt < PJ_ARRAY_SIZE(cand_addr)) { |
| 810 | status = pj_getdefaultipinterface(af, addr); |
| 811 | if (status == PJ_SUCCESS) { |
| 812 | TRACE_((THIS_FILE, "default IP is %s", |
| 813 | pj_sockaddr_print(addr, strip, sizeof(strip), 0))); |
| 814 | |
| 815 | pj_sockaddr_set_port(addr, 0); |
| 816 | for (i=0; i<cand_cnt; ++i) { |
| 817 | if (pj_sockaddr_cmp(&cand_addr[i], addr)==0) |
| 818 | break; |
| 819 | } |
| 820 | |
| 821 | cand_weight[i] += WEIGHT_DEF_ROUTE; |
| 822 | if (i >= cand_cnt) { |
| 823 | pj_sockaddr_copy_addr(&cand_addr[i], addr); |
| 824 | ++cand_cnt; |
| 825 | } |
| 826 | } |
| 827 | } |
| 828 | |
| 829 | |
| 830 | /* Enumerate IP interfaces */ |
| 831 | if (cand_cnt < PJ_ARRAY_SIZE(cand_addr)) { |
| 832 | unsigned start_if = cand_cnt; |
| 833 | unsigned count = PJ_ARRAY_SIZE(cand_addr) - start_if; |
| 834 | |
| 835 | status = pj_enum_ip_interface(af, &count, &cand_addr[start_if]); |
| 836 | if (status == PJ_SUCCESS && count) { |
| 837 | /* Clear the port number */ |
| 838 | for (i=0; i<count; ++i) |
| 839 | pj_sockaddr_set_port(&cand_addr[start_if+i], 0); |
| 840 | |
| 841 | /* For each candidate that we found so far (that is the hostname |
| 842 | * address and default interface address, check if they're found |
| 843 | * in the interface list. If found, add the weight, and if not, |
| 844 | * decrease the weight. |
| 845 | */ |
| 846 | for (i=0; i<cand_cnt; ++i) { |
| 847 | unsigned j; |
| 848 | for (j=0; j<count; ++j) { |
| 849 | if (pj_sockaddr_cmp(&cand_addr[i], |
| 850 | &cand_addr[start_if+j])==0) |
| 851 | break; |
| 852 | } |
| 853 | |
| 854 | if (j == count) { |
| 855 | /* Not found */ |
| 856 | cand_weight[i] -= WEIGHT_INTERFACE; |
| 857 | } else { |
| 858 | cand_weight[i] += WEIGHT_INTERFACE; |
| 859 | } |
| 860 | } |
| 861 | |
| 862 | /* Add remaining interface to candidate list. */ |
| 863 | for (i=0; i<count; ++i) { |
| 864 | unsigned j; |
| 865 | for (j=0; j<cand_cnt; ++j) { |
| 866 | if (pj_sockaddr_cmp(&cand_addr[start_if+i], |
| 867 | &cand_addr[j])==0) |
| 868 | break; |
| 869 | } |
| 870 | |
| 871 | if (j == cand_cnt) { |
| 872 | pj_sockaddr_copy_addr(&cand_addr[cand_cnt], |
| 873 | &cand_addr[start_if+i]); |
| 874 | cand_weight[cand_cnt] += WEIGHT_INTERFACE; |
| 875 | ++cand_cnt; |
| 876 | } |
| 877 | } |
| 878 | } |
| 879 | } |
| 880 | |
| 881 | /* Apply weight adjustment for special IPv4/IPv6 addresses |
| 882 | * See http://trac.pjsip.org/repos/ticket/1046 |
| 883 | */ |
| 884 | if (af == PJ_AF_INET) { |
| 885 | for (i=0; i<cand_cnt; ++i) { |
| 886 | unsigned j; |
| 887 | for (j=0; j<PJ_ARRAY_SIZE(spec_ipv4); ++j) { |
| 888 | pj_uint32_t a = pj_ntohl(cand_addr[i].ipv4.sin_addr.s_addr); |
| 889 | pj_uint32_t pa = spec_ipv4[j].addr; |
| 890 | pj_uint32_t pm = spec_ipv4[j].mask; |
| 891 | |
| 892 | if ((a & pm) == pa) { |
| 893 | cand_weight[i] += spec_ipv4[j].weight; |
| 894 | break; |
| 895 | } |
| 896 | } |
| 897 | } |
| 898 | } else if (af == PJ_AF_INET6) { |
| 899 | for (i=0; i<PJ_ARRAY_SIZE(spec_ipv6); ++i) { |
| 900 | unsigned j; |
| 901 | for (j=0; j<cand_cnt; ++j) { |
| 902 | pj_uint8_t *a = cand_addr[j].ipv6.sin6_addr.s6_addr; |
| 903 | pj_uint8_t am[16]; |
| 904 | pj_uint8_t *pa = spec_ipv6[i].addr; |
| 905 | pj_uint8_t *pm = spec_ipv6[i].mask; |
| 906 | unsigned k; |
| 907 | |
| 908 | for (k=0; k<16; ++k) { |
| 909 | am[k] = (pj_uint8_t)((a[k] & pm[k]) & 0xFF); |
| 910 | } |
| 911 | |
| 912 | if (pj_memcmp(am, pa, 16)==0) { |
| 913 | cand_weight[j] += spec_ipv6[i].weight; |
| 914 | } |
| 915 | } |
| 916 | } |
| 917 | } else { |
| 918 | return PJ_EAFNOTSUP; |
| 919 | } |
| 920 | |
| 921 | /* Enumerate candidates to get the best IP address to choose */ |
| 922 | selected_cand = -1; |
| 923 | for (i=0; i<cand_cnt; ++i) { |
| 924 | TRACE_((THIS_FILE, "Checking candidate IP %s, weight=%d", |
| 925 | pj_sockaddr_print(&cand_addr[i], strip, sizeof(strip), 0), |
| 926 | cand_weight[i])); |
| 927 | |
| 928 | if (cand_weight[i] < MIN_WEIGHT) { |
| 929 | continue; |
| 930 | } |
| 931 | |
| 932 | if (selected_cand == -1) |
| 933 | selected_cand = i; |
| 934 | else if (cand_weight[i] > cand_weight[selected_cand]) |
| 935 | selected_cand = i; |
| 936 | } |
| 937 | |
| 938 | /* If else fails, returns loopback interface as the last resort */ |
| 939 | if (selected_cand == -1) { |
| 940 | if (af==PJ_AF_INET) { |
| 941 | addr->ipv4.sin_addr.s_addr = pj_htonl (0x7f000001); |
| 942 | } else { |
| 943 | pj_in6_addr *s6_addr; |
| 944 | |
| 945 | s6_addr = (pj_in6_addr*) pj_sockaddr_get_addr(addr); |
| 946 | pj_bzero(s6_addr, sizeof(pj_in6_addr)); |
| 947 | s6_addr->s6_addr[15] = 1; |
| 948 | } |
| 949 | TRACE_((THIS_FILE, "Loopback IP %s returned", |
| 950 | pj_sockaddr_print(addr, strip, sizeof(strip), 0))); |
| 951 | } else { |
| 952 | pj_sockaddr_copy_addr(addr, &cand_addr[selected_cand]); |
| 953 | TRACE_((THIS_FILE, "Candidate %s selected", |
| 954 | pj_sockaddr_print(addr, strip, sizeof(strip), 0))); |
| 955 | } |
| 956 | |
| 957 | return PJ_SUCCESS; |
| 958 | } |
| 959 | |
| 960 | /* Get IP interface for sending to the specified destination */ |
| 961 | PJ_DEF(pj_status_t) pj_getipinterface(int af, |
| 962 | const pj_str_t *dst, |
| 963 | pj_sockaddr *itf_addr, |
| 964 | pj_bool_t allow_resolve, |
| 965 | pj_sockaddr *p_dst_addr) |
| 966 | { |
| 967 | pj_sockaddr dst_addr; |
| 968 | pj_sock_t fd; |
| 969 | int len; |
| 970 | pj_uint8_t zero[64]; |
| 971 | pj_status_t status; |
| 972 | |
| 973 | pj_sockaddr_init(af, &dst_addr, NULL, 53); |
| 974 | status = pj_inet_pton(af, dst, pj_sockaddr_get_addr(&dst_addr)); |
| 975 | if (status != PJ_SUCCESS) { |
| 976 | /* "dst" is not an IP address. */ |
| 977 | if (allow_resolve) { |
| 978 | status = pj_sockaddr_init(af, &dst_addr, dst, 53); |
| 979 | } else { |
| 980 | pj_str_t cp; |
| 981 | |
| 982 | if (af == PJ_AF_INET) { |
| 983 | cp = pj_str("1.1.1.1"); |
| 984 | } else { |
| 985 | cp = pj_str("1::1"); |
| 986 | } |
| 987 | status = pj_sockaddr_init(af, &dst_addr, &cp, 53); |
| 988 | } |
| 989 | |
| 990 | if (status != PJ_SUCCESS) |
| 991 | return status; |
| 992 | } |
| 993 | |
| 994 | /* Create UDP socket and connect() to the destination IP */ |
| 995 | status = pj_sock_socket(af, pj_SOCK_DGRAM(), 0, &fd); |
| 996 | if (status != PJ_SUCCESS) { |
| 997 | return status; |
| 998 | } |
| 999 | |
| 1000 | status = pj_sock_connect(fd, &dst_addr, pj_sockaddr_get_len(&dst_addr)); |
| 1001 | if (status != PJ_SUCCESS) { |
| 1002 | pj_sock_close(fd); |
| 1003 | return status; |
| 1004 | } |
| 1005 | |
| 1006 | len = sizeof(*itf_addr); |
| 1007 | status = pj_sock_getsockname(fd, itf_addr, &len); |
| 1008 | if (status != PJ_SUCCESS) { |
| 1009 | pj_sock_close(fd); |
| 1010 | return status; |
| 1011 | } |
| 1012 | |
| 1013 | pj_sock_close(fd); |
| 1014 | |
| 1015 | /* Check that the address returned is not zero */ |
| 1016 | pj_bzero(zero, sizeof(zero)); |
| 1017 | if (pj_memcmp(pj_sockaddr_get_addr(itf_addr), zero, |
| 1018 | pj_sockaddr_get_addr_len(itf_addr))==0) |
| 1019 | { |
| 1020 | return PJ_ENOTFOUND; |
| 1021 | } |
| 1022 | |
| 1023 | if (p_dst_addr) |
| 1024 | *p_dst_addr = dst_addr; |
| 1025 | |
| 1026 | return PJ_SUCCESS; |
| 1027 | } |
| 1028 | |
| 1029 | /* Get the default IP interface */ |
| 1030 | PJ_DEF(pj_status_t) pj_getdefaultipinterface(int af, pj_sockaddr *addr) |
| 1031 | { |
| 1032 | pj_str_t cp; |
| 1033 | |
| 1034 | if (af == PJ_AF_INET) { |
| 1035 | cp = pj_str("1.1.1.1"); |
| 1036 | } else { |
| 1037 | cp = pj_str("1::1"); |
| 1038 | } |
| 1039 | |
| 1040 | return pj_getipinterface(af, &cp, addr, PJ_FALSE, NULL); |
| 1041 | } |
| 1042 | |
| 1043 | |
| 1044 | /* |
| 1045 | * Bind socket at random port. |
| 1046 | */ |
| 1047 | PJ_DEF(pj_status_t) pj_sock_bind_random( pj_sock_t sockfd, |
| 1048 | const pj_sockaddr_t *addr, |
| 1049 | pj_uint16_t port_range, |
| 1050 | pj_uint16_t max_try) |
| 1051 | { |
| 1052 | pj_sockaddr bind_addr; |
| 1053 | int addr_len; |
| 1054 | pj_uint16_t base_port; |
| 1055 | pj_status_t status = PJ_SUCCESS; |
| 1056 | |
| 1057 | PJ_CHECK_STACK(); |
| 1058 | |
| 1059 | PJ_ASSERT_RETURN(addr, PJ_EINVAL); |
| 1060 | |
| 1061 | pj_sockaddr_cp(&bind_addr, addr); |
| 1062 | addr_len = pj_sockaddr_get_len(addr); |
| 1063 | base_port = pj_sockaddr_get_port(addr); |
| 1064 | |
| 1065 | if (base_port == 0 || port_range == 0) { |
| 1066 | return pj_sock_bind(sockfd, &bind_addr, addr_len); |
| 1067 | } |
| 1068 | |
| 1069 | for (; max_try; --max_try) { |
| 1070 | pj_uint16_t port; |
| 1071 | port = (pj_uint16_t)(base_port + pj_rand() % (port_range + 1)); |
| 1072 | pj_sockaddr_set_port(&bind_addr, port); |
| 1073 | status = pj_sock_bind(sockfd, &bind_addr, addr_len); |
| 1074 | if (status == PJ_SUCCESS) |
| 1075 | break; |
| 1076 | } |
| 1077 | |
| 1078 | return status; |
| 1079 | } |
| 1080 | |
| 1081 | |
| 1082 | /* |
| 1083 | * Adjust socket send/receive buffer size. |
| 1084 | */ |
| 1085 | PJ_DEF(pj_status_t) pj_sock_setsockopt_sobuf( pj_sock_t sockfd, |
| 1086 | pj_uint16_t optname, |
| 1087 | pj_bool_t auto_retry, |
| 1088 | unsigned *buf_size) |
| 1089 | { |
| 1090 | pj_status_t status; |
| 1091 | int try_size, cur_size, i, step, size_len; |
| 1092 | enum { MAX_TRY = 20 }; |
| 1093 | |
| 1094 | PJ_CHECK_STACK(); |
| 1095 | |
| 1096 | PJ_ASSERT_RETURN(sockfd != PJ_INVALID_SOCKET && |
| 1097 | buf_size && |
| 1098 | *buf_size > 0 && |
| 1099 | (optname == pj_SO_RCVBUF() || |
| 1100 | optname == pj_SO_SNDBUF()), |
| 1101 | PJ_EINVAL); |
| 1102 | |
| 1103 | size_len = sizeof(cur_size); |
| 1104 | status = pj_sock_getsockopt(sockfd, pj_SOL_SOCKET(), optname, |
| 1105 | &cur_size, &size_len); |
| 1106 | if (status != PJ_SUCCESS) |
| 1107 | return status; |
| 1108 | |
| 1109 | try_size = *buf_size; |
| 1110 | step = (try_size - cur_size) / MAX_TRY; |
| 1111 | if (step < 4096) |
| 1112 | step = 4096; |
| 1113 | |
| 1114 | for (i = 0; i < (MAX_TRY-1); ++i) { |
| 1115 | if (try_size <= cur_size) { |
| 1116 | /* Done, return current size */ |
| 1117 | *buf_size = cur_size; |
| 1118 | break; |
| 1119 | } |
| 1120 | |
| 1121 | status = pj_sock_setsockopt(sockfd, pj_SOL_SOCKET(), optname, |
| 1122 | &try_size, sizeof(try_size)); |
| 1123 | if (status == PJ_SUCCESS) { |
| 1124 | status = pj_sock_getsockopt(sockfd, pj_SOL_SOCKET(), optname, |
| 1125 | &cur_size, &size_len); |
| 1126 | if (status != PJ_SUCCESS) { |
| 1127 | /* Ops! No info about current size, just return last try size |
| 1128 | * and quit. |
| 1129 | */ |
| 1130 | *buf_size = try_size; |
| 1131 | break; |
| 1132 | } |
| 1133 | } |
| 1134 | |
| 1135 | if (!auto_retry) |
| 1136 | break; |
| 1137 | |
| 1138 | try_size -= step; |
| 1139 | } |
| 1140 | |
| 1141 | return status; |
| 1142 | } |
| 1143 | |
| 1144 | |
| 1145 | /* Only need to implement these in DLL build */ |
| 1146 | #if defined(PJ_DLL) |
| 1147 | |
| 1148 | PJ_DEF(pj_uint16_t) pj_AF_UNSPEC(void) |
| 1149 | { |
| 1150 | return PJ_AF_UNSPEC; |
| 1151 | } |
| 1152 | |
| 1153 | PJ_DEF(pj_uint16_t) pj_AF_UNIX(void) |
| 1154 | { |
| 1155 | return PJ_AF_UNIX; |
| 1156 | } |
| 1157 | |
| 1158 | PJ_DEF(pj_uint16_t) pj_AF_INET(void) |
| 1159 | { |
| 1160 | return PJ_AF_INET; |
| 1161 | } |
| 1162 | |
| 1163 | PJ_DEF(pj_uint16_t) pj_AF_INET6(void) |
| 1164 | { |
| 1165 | return PJ_AF_INET6; |
| 1166 | } |
| 1167 | |
| 1168 | PJ_DEF(pj_uint16_t) pj_AF_PACKET(void) |
| 1169 | { |
| 1170 | return PJ_AF_PACKET; |
| 1171 | } |
| 1172 | |
| 1173 | PJ_DEF(pj_uint16_t) pj_AF_IRDA(void) |
| 1174 | { |
| 1175 | return PJ_AF_IRDA; |
| 1176 | } |
| 1177 | |
| 1178 | PJ_DEF(int) pj_SOCK_STREAM(void) |
| 1179 | { |
| 1180 | return PJ_SOCK_STREAM; |
| 1181 | } |
| 1182 | |
| 1183 | PJ_DEF(int) pj_SOCK_DGRAM(void) |
| 1184 | { |
| 1185 | return PJ_SOCK_DGRAM; |
| 1186 | } |
| 1187 | |
| 1188 | PJ_DEF(int) pj_SOCK_RAW(void) |
| 1189 | { |
| 1190 | return PJ_SOCK_RAW; |
| 1191 | } |
| 1192 | |
| 1193 | PJ_DEF(int) pj_SOCK_RDM(void) |
| 1194 | { |
| 1195 | return PJ_SOCK_RDM; |
| 1196 | } |
| 1197 | |
| 1198 | PJ_DEF(pj_uint16_t) pj_SOL_SOCKET(void) |
| 1199 | { |
| 1200 | return PJ_SOL_SOCKET; |
| 1201 | } |
| 1202 | |
| 1203 | PJ_DEF(pj_uint16_t) pj_SOL_IP(void) |
| 1204 | { |
| 1205 | return PJ_SOL_IP; |
| 1206 | } |
| 1207 | |
| 1208 | PJ_DEF(pj_uint16_t) pj_SOL_TCP(void) |
| 1209 | { |
| 1210 | return PJ_SOL_TCP; |
| 1211 | } |
| 1212 | |
| 1213 | PJ_DEF(pj_uint16_t) pj_SOL_UDP(void) |
| 1214 | { |
| 1215 | return PJ_SOL_UDP; |
| 1216 | } |
| 1217 | |
| 1218 | PJ_DEF(pj_uint16_t) pj_SOL_IPV6(void) |
| 1219 | { |
| 1220 | return PJ_SOL_IPV6; |
| 1221 | } |
| 1222 | |
| 1223 | PJ_DEF(int) pj_IP_TOS(void) |
| 1224 | { |
| 1225 | return PJ_IP_TOS; |
| 1226 | } |
| 1227 | |
| 1228 | PJ_DEF(int) pj_IPTOS_LOWDELAY(void) |
| 1229 | { |
| 1230 | return PJ_IPTOS_LOWDELAY; |
| 1231 | } |
| 1232 | |
| 1233 | PJ_DEF(int) pj_IPTOS_THROUGHPUT(void) |
| 1234 | { |
| 1235 | return PJ_IPTOS_THROUGHPUT; |
| 1236 | } |
| 1237 | |
| 1238 | PJ_DEF(int) pj_IPTOS_RELIABILITY(void) |
| 1239 | { |
| 1240 | return PJ_IPTOS_RELIABILITY; |
| 1241 | } |
| 1242 | |
| 1243 | PJ_DEF(int) pj_IPTOS_MINCOST(void) |
| 1244 | { |
| 1245 | return PJ_IPTOS_MINCOST; |
| 1246 | } |
| 1247 | |
| 1248 | PJ_DEF(pj_uint16_t) pj_SO_TYPE(void) |
| 1249 | { |
| 1250 | return PJ_SO_TYPE; |
| 1251 | } |
| 1252 | |
| 1253 | PJ_DEF(pj_uint16_t) pj_SO_RCVBUF(void) |
| 1254 | { |
| 1255 | return PJ_SO_RCVBUF; |
| 1256 | } |
| 1257 | |
| 1258 | PJ_DEF(pj_uint16_t) pj_SO_SNDBUF(void) |
| 1259 | { |
| 1260 | return PJ_SO_SNDBUF; |
| 1261 | } |
| 1262 | |
| 1263 | PJ_DEF(pj_uint16_t) pj_TCP_NODELAY(void) |
| 1264 | { |
| 1265 | return PJ_TCP_NODELAY; |
| 1266 | } |
| 1267 | |
| 1268 | PJ_DEF(pj_uint16_t) pj_SO_REUSEADDR(void) |
| 1269 | { |
| 1270 | return PJ_SO_REUSEADDR; |
| 1271 | } |
| 1272 | |
| 1273 | PJ_DEF(pj_uint16_t) pj_SO_NOSIGPIPE(void) |
| 1274 | { |
| 1275 | return PJ_SO_NOSIGPIPE; |
| 1276 | } |
| 1277 | |
| 1278 | PJ_DEF(pj_uint16_t) pj_SO_PRIORITY(void) |
| 1279 | { |
| 1280 | return PJ_SO_PRIORITY; |
| 1281 | } |
| 1282 | |
| 1283 | PJ_DEF(pj_uint16_t) pj_IP_MULTICAST_IF(void) |
| 1284 | { |
| 1285 | return PJ_IP_MULTICAST_IF; |
| 1286 | } |
| 1287 | |
| 1288 | PJ_DEF(pj_uint16_t) pj_IP_MULTICAST_TTL(void) |
| 1289 | { |
| 1290 | return PJ_IP_MULTICAST_TTL; |
| 1291 | } |
| 1292 | |
| 1293 | PJ_DEF(pj_uint16_t) pj_IP_MULTICAST_LOOP(void) |
| 1294 | { |
| 1295 | return PJ_IP_MULTICAST_LOOP; |
| 1296 | } |
| 1297 | |
| 1298 | PJ_DEF(pj_uint16_t) pj_IP_ADD_MEMBERSHIP(void) |
| 1299 | { |
| 1300 | return PJ_IP_ADD_MEMBERSHIP; |
| 1301 | } |
| 1302 | |
| 1303 | PJ_DEF(pj_uint16_t) pj_IP_DROP_MEMBERSHIP(void) |
| 1304 | { |
| 1305 | return PJ_IP_DROP_MEMBERSHIP; |
| 1306 | } |
| 1307 | |
| 1308 | PJ_DEF(int) pj_MSG_OOB(void) |
| 1309 | { |
| 1310 | return PJ_MSG_OOB; |
| 1311 | } |
| 1312 | |
| 1313 | PJ_DEF(int) pj_MSG_PEEK(void) |
| 1314 | { |
| 1315 | return PJ_MSG_PEEK; |
| 1316 | } |
| 1317 | |
| 1318 | PJ_DEF(int) pj_MSG_DONTROUTE(void) |
| 1319 | { |
| 1320 | return PJ_MSG_DONTROUTE; |
| 1321 | } |
| 1322 | |
| 1323 | #endif /* PJ_DLL */ |
| 1324 | |