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| 1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #include "primpl.h" | |
| 7 | |
| 8 #include <string.h> | |
| 9 | |
| 10 /* | |
| 11 * On Unix, the error code for gethostbyname() and gethostbyaddr() | |
| 12 * is returned in the global variable h_errno, instead of the usual | |
| 13 * errno. | |
| 14 */ | |
| 15 #if defined(XP_UNIX) | |
| 16 #if defined(_PR_NEED_H_ERRNO) | |
| 17 extern int h_errno; | |
| 18 #endif | |
| 19 #define _MD_GETHOST_ERRNO() h_errno | |
| 20 #else | |
| 21 #define _MD_GETHOST_ERRNO() _MD_ERRNO() | |
| 22 #endif | |
| 23 | |
| 24 /* | |
| 25 * The meaning of the macros related to gethostbyname, gethostbyaddr, | |
| 26 * and gethostbyname2 is defined below. | |
| 27 * - _PR_HAVE_THREADSAFE_GETHOST: the gethostbyXXX functions return | |
| 28 * the result in thread specific storage. For example, AIX, HP-UX, | |
| 29 * and OSF1. | |
| 30 * - _PR_HAVE_GETHOST_R: have the gethostbyXXX_r functions. See next | |
| 31 * two macros. | |
| 32 * - _PR_HAVE_GETHOST_R_INT: the gethostbyXXX_r functions return an | |
| 33 * int. For example, Linux glibc. | |
| 34 * - _PR_HAVE_GETHOST_R_POINTER: the gethostbyXXX_r functions return | |
| 35 * a struct hostent* pointer. For example, Solaris and IRIX. | |
| 36 */ | |
| 37 #if defined(_PR_NO_PREEMPT) || defined(_PR_HAVE_GETHOST_R) \ | |
| 38 || defined(_PR_HAVE_THREADSAFE_GETHOST) | |
| 39 #define _PR_NO_DNS_LOCK | |
| 40 #endif | |
| 41 | |
| 42 #if defined(_PR_NO_DNS_LOCK) | |
| 43 #define LOCK_DNS() | |
| 44 #define UNLOCK_DNS() | |
| 45 #else | |
| 46 PRLock *_pr_dnsLock = NULL; | |
| 47 #define LOCK_DNS() PR_Lock(_pr_dnsLock) | |
| 48 #define UNLOCK_DNS() PR_Unlock(_pr_dnsLock) | |
| 49 #endif /* defined(_PR_NO_DNS_LOCK) */ | |
| 50 | |
| 51 /* | |
| 52 * Some platforms have the reentrant getprotobyname_r() and | |
| 53 * getprotobynumber_r(). However, they come in three flavors. | |
| 54 * Some return a pointer to struct protoent, others return | |
| 55 * an int, and glibc's flavor takes five arguments. | |
| 56 */ | |
| 57 #if defined(XP_BEOS) && defined(BONE_VERSION) | |
| 58 #include <arpa/inet.h> /* pick up define for inet_addr */ | |
| 59 #include <sys/socket.h> | |
| 60 #define _PR_HAVE_GETPROTO_R | |
| 61 #define _PR_HAVE_GETPROTO_R_POINTER | |
| 62 #endif | |
| 63 | |
| 64 #if defined(SOLARIS) || (defined(BSDI) && defined(_REENTRANT)) \ | |
| 65 || (defined(LINUX) && defined(_REENTRANT) \ | |
| 66 && defined(__GLIBC__) && __GLIBC__ < 2) | |
| 67 #define _PR_HAVE_GETPROTO_R | |
| 68 #define _PR_HAVE_GETPROTO_R_POINTER | |
| 69 #endif | |
| 70 | |
| 71 #if defined(OSF1) \ | |
| 72 || defined(AIX4_3_PLUS) || (defined(AIX) && defined(_THREAD_SAFE)) \ | |
| 73 || (defined(HPUX10_10) && defined(_REENTRANT)) \ | |
| 74 || (defined(HPUX10_20) && defined(_REENTRANT)) \ | |
| 75 || defined(OPENBSD) | |
| 76 #define _PR_HAVE_GETPROTO_R | |
| 77 #define _PR_HAVE_GETPROTO_R_INT | |
| 78 #endif | |
| 79 | |
| 80 #if __FreeBSD_version >= 602000 | |
| 81 #define _PR_HAVE_GETPROTO_R | |
| 82 #define _PR_HAVE_5_ARG_GETPROTO_R | |
| 83 #endif | |
| 84 | |
| 85 /* BeOS has glibc but not the glibc-style getprotobyxxx_r functions. */ | |
| 86 #if (defined(__GLIBC__) && __GLIBC__ >= 2 && !defined(XP_BEOS)) | |
| 87 #define _PR_HAVE_GETPROTO_R | |
| 88 #define _PR_HAVE_5_ARG_GETPROTO_R | |
| 89 #endif | |
| 90 | |
| 91 #if !defined(_PR_HAVE_GETPROTO_R) | |
| 92 PRLock* _getproto_lock = NULL; | |
| 93 #endif | |
| 94 | |
| 95 #if defined(_PR_INET6_PROBE) | |
| 96 extern PRBool _pr_ipv6_is_present(void); | |
| 97 #endif | |
| 98 | |
| 99 #define _PR_IN6_IS_ADDR_UNSPECIFIED(a) \ | |
| 100 (((a)->pr_s6_addr32[0] == 0) && \ | |
| 101 ((a)->pr_s6_addr32[1] == 0) && \ | |
| 102 ((a)->pr_s6_addr32[2] == 0) && \ | |
| 103 ((a)->pr_s6_addr32[3] == 0)) | |
| 104 | |
| 105 #define _PR_IN6_IS_ADDR_LOOPBACK(a) \ | |
| 106 (((a)->pr_s6_addr32[0] == 0) && \ | |
| 107 ((a)->pr_s6_addr32[1] == 0) && \ | |
| 108 ((a)->pr_s6_addr32[2] == 0) && \ | |
| 109 ((a)->pr_s6_addr[12] == 0) && \ | |
| 110 ((a)->pr_s6_addr[13] == 0) && \ | |
| 111 ((a)->pr_s6_addr[14] == 0) && \ | |
| 112 ((a)->pr_s6_addr[15] == 0x1U)) | |
| 113 | |
| 114 const PRIPv6Addr _pr_in6addr_any = {{{ 0, 0, 0, 0, | |
| 115
0, 0, 0, 0, | |
| 116
0, 0, 0, 0, | |
| 117
0, 0, 0, 0 }}}; | |
| 118 | |
| 119 const PRIPv6Addr _pr_in6addr_loopback = {{{ 0, 0, 0, 0, | |
| 120
0, 0, 0, 0, | |
| 121
0, 0, 0, 0, | |
| 122
0, 0, 0, 0x1U }}}; | |
| 123 /* | |
| 124 * The values at bytes 10 and 11 are compared using pointers to | |
| 125 * 8-bit fields, and not 32-bit fields, to make the comparison work on | |
| 126 * both big-endian and little-endian systems | |
| 127 */ | |
| 128 | |
| 129 #define _PR_IN6_IS_ADDR_V4MAPPED(a) \ | |
| 130 (((a)->pr_s6_addr32[0] == 0) && \ | |
| 131 ((a)->pr_s6_addr32[1] == 0) && \ | |
| 132 ((a)->pr_s6_addr[8] == 0) && \ | |
| 133 ((a)->pr_s6_addr[9] == 0) && \ | |
| 134 ((a)->pr_s6_addr[10] == 0xff) && \ | |
| 135 ((a)->pr_s6_addr[11] == 0xff)) | |
| 136 | |
| 137 #define _PR_IN6_IS_ADDR_V4COMPAT(a) \ | |
| 138 (((a)->pr_s6_addr32[0] == 0) && \ | |
| 139 ((a)->pr_s6_addr32[1] == 0) && \ | |
| 140 ((a)->pr_s6_addr32[2] == 0)) | |
| 141 | |
| 142 #define _PR_IN6_V4MAPPED_TO_IPADDR(a) ((a)->pr_s6_addr32[3]) | |
| 143 | |
| 144 #if defined(_PR_INET6) && defined(_PR_HAVE_GETHOSTBYNAME2) | |
| 145 | |
| 146 /* | |
| 147 * The _pr_QueryNetIfs() function finds out if the system has | |
| 148 * IPv4 or IPv6 source addresses configured and sets _pr_have_inet_if | |
| 149 * and _pr_have_inet6_if accordingly. | |
| 150 * | |
| 151 * We have an implementation using SIOCGIFCONF ioctl and a | |
| 152 * default implementation that simply sets _pr_have_inet_if | |
| 153 * and _pr_have_inet6_if to true. A better implementation | |
| 154 * would be to use the routing sockets (see Chapter 17 of | |
| 155 * W. Richard Stevens' Unix Network Programming, Vol. 1, 2nd. Ed.) | |
| 156 */ | |
| 157 | |
| 158 static PRLock *_pr_query_ifs_lock = NULL; | |
| 159 static PRBool _pr_have_inet_if = PR_FALSE; | |
| 160 static PRBool _pr_have_inet6_if = PR_FALSE; | |
| 161 | |
| 162 #undef DEBUG_QUERY_IFS | |
| 163 | |
| 164 #if defined(AIX) \ | |
| 165 || (defined(DARWIN) && (!defined(HAVE_GETIFADDRS) \ | |
| 166 || (defined(XP_MACOSX) && (!defined(MAC_OS_X_VERSION_10_2) || \ | |
| 167 MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_2)))) | |
| 168 | |
| 169 /* | |
| 170 * Use SIOCGIFCONF ioctl on platforms that don't have routing | |
| 171 * sockets. Warning: whether SIOCGIFCONF ioctl returns AF_INET6 | |
| 172 * network interfaces is not portable. | |
| 173 * | |
| 174 * The _pr_QueryNetIfs() function is derived from the code in | |
| 175 * src/lib/libc/net/getifaddrs.c in BSD Unix and the code in | |
| 176 * Section 16.6 of W. Richard Stevens' Unix Network Programming, | |
| 177 * Vol. 1, 2nd. Ed. | |
| 178 */ | |
| 179 | |
| 180 #include <sys/ioctl.h> | |
| 181 #include <sys/socket.h> | |
| 182 #include <netinet/in.h> | |
| 183 #include <net/if.h> | |
| 184 | |
| 185 #ifdef DEBUG_QUERY_IFS | |
| 186 static void | |
| 187 _pr_PrintIfreq(struct ifreq *ifr) | |
| 188 { | |
| 189 PRNetAddr addr; | |
| 190 struct sockaddr *sa; | |
| 191 const char* family; | |
| 192 char addrstr[64]; | |
| 193 | |
| 194 sa = &ifr->ifr_addr; | |
| 195 if (sa->sa_family == AF_INET) { | |
| 196 struct sockaddr_in *sin = (struct sockaddr_in *)sa; | |
| 197 family = "inet"; | |
| 198 memcpy(&addr.inet.ip, &sin->sin_addr, sizeof(sin->sin_addr)); | |
| 199 } else if (sa->sa_family == AF_INET6) { | |
| 200 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa; | |
| 201 family = "inet6"; | |
| 202 memcpy(&addr.ipv6.ip, &sin6->sin6_addr, sizeof(sin6->sin6_addr)); | |
| 203 } else { | |
| 204 return; /* skip if not AF_INET or AF_INET6 */ | |
| 205 } | |
| 206 addr.raw.family = sa->sa_family; | |
| 207 PR_NetAddrToString(&addr, addrstr, sizeof(addrstr)); | |
| 208 printf("%s: %s %s\n", ifr->ifr_name, family, addrstr); | |
| 209 } | |
| 210 #endif | |
| 211 | |
| 212 static void | |
| 213 _pr_QueryNetIfs(void) | |
| 214 { | |
| 215 int sock; | |
| 216 int rv; | |
| 217 struct ifconf ifc; | |
| 218 struct ifreq *ifr; | |
| 219 struct ifreq *lifr; | |
| 220 PRUint32 len, lastlen; | |
| 221 char *buf; | |
| 222 | |
| 223 if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == -1) { | |
| 224 return; | |
| 225 } | |
| 226 | |
| 227 /* Issue SIOCGIFCONF request in a loop. */ | |
| 228 lastlen = 0; | |
| 229 len = 100 * sizeof(struct ifreq); /* initial buffer size guess */ | |
| 230 for (;;) { | |
| 231 buf = (char *)PR_Malloc(len); | |
| 232 if (NULL == buf) { | |
| 233 close(sock); | |
| 234 return; | |
| 235 } | |
| 236 ifc.ifc_buf = buf; | |
| 237 ifc.ifc_len = len; | |
| 238 rv = ioctl(sock, SIOCGIFCONF, &ifc); | |
| 239 if (rv < 0) { | |
| 240 if (errno != EINVAL || lastlen != 0) { | |
| 241 close(sock); | |
| 242 PR_Free(buf); | |
| 243 return; | |
| 244 } | |
| 245 } else { | |
| 246 if (ifc.ifc_len == lastlen) | |
| 247 break; /* success, len has not changed */ | |
| 248 lastlen = ifc.ifc_len; | |
| 249 } | |
| 250 len += 10 * sizeof(struct ifreq); /* increment */ | |
| 251 PR_Free(buf); | |
| 252 } | |
| 253 close(sock); | |
| 254 | |
| 255 ifr = ifc.ifc_req; | |
| 256 lifr = (struct ifreq *)&ifc.ifc_buf[ifc.ifc_len]; | |
| 257 | |
| 258 while (ifr < lifr) { | |
| 259 struct sockaddr *sa; | |
| 260 int sa_len; | |
| 261 | |
| 262 #ifdef DEBUG_QUERY_IFS | |
| 263 _pr_PrintIfreq(ifr); | |
| 264 #endif | |
| 265 sa = &ifr->ifr_addr; | |
| 266 if (sa->sa_family == AF_INET) { | |
| 267 struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
| 268 if (sin->sin_addr.s_addr != htonl(INADDR_LOOPBACK)) { | |
| 269 _pr_have_inet_if = PR_TRUE; | |
| 270 } | |
| 271 } else if (sa->sa_family == AF_INET6) { | |
| 272 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
| 273 if (!IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr) | |
| 274 && !IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) { | |
| 275 _pr_have_inet6_if = PR_TRUE; | |
| 276 } | |
| 277 } | |
| 278 | |
| 279 #ifdef _PR_HAVE_SOCKADDR_LEN | |
| 280 sa_len = PR_MAX(sa->sa_len, sizeof(struct sockaddr)); | |
| 281 #else | |
| 282 switch (sa->sa_family) { | |
| 283 #ifdef AF_LINK | |
| 284 case AF_LINK: | |
| 285 sa_len = sizeof(struct sockaddr_dl); | |
| 286 break; | |
| 287 #endif | |
| 288 case AF_INET6: | |
| 289 sa_len = sizeof(struct sockaddr_in6); | |
| 290 break; | |
| 291 default: | |
| 292 sa_len = sizeof(struct sockaddr); | |
| 293 break; | |
| 294 } | |
| 295 #endif | |
| 296 ifr = (struct ifreq *)(((char *)sa) + sa_len); | |
| 297 } | |
| 298 PR_Free(buf); | |
| 299 } | |
| 300 | |
| 301 #elif (defined(DARWIN) && defined(HAVE_GETIFADDRS)) || defined(FREEBSD) \ | |
| 302 || defined(NETBSD) || defined(OPENBSD) | |
| 303 | |
| 304 /* | |
| 305 * Use the BSD getifaddrs function. | |
| 306 */ | |
| 307 | |
| 308 #include <sys/types.h> | |
| 309 #include <sys/socket.h> | |
| 310 #include <ifaddrs.h> | |
| 311 #include <netinet/in.h> | |
| 312 | |
| 313 #ifdef DEBUG_QUERY_IFS | |
| 314 static void | |
| 315 _pr_PrintIfaddrs(struct ifaddrs *ifa) | |
| 316 { | |
| 317 struct sockaddr *sa; | |
| 318 const char* family; | |
| 319 void *addrp; | |
| 320 char addrstr[64]; | |
| 321 | |
| 322 sa = ifa->ifa_addr; | |
| 323 if (sa->sa_family == AF_INET) { | |
| 324 struct sockaddr_in *sin = (struct sockaddr_in *)sa; | |
| 325 family = "inet"; | |
| 326 addrp = &sin->sin_addr; | |
| 327 } else if (sa->sa_family == AF_INET6) { | |
| 328 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa; | |
| 329 family = "inet6"; | |
| 330 addrp = &sin6->sin6_addr; | |
| 331 } else { | |
| 332 return; /* skip if not AF_INET or AF_INET6 */ | |
| 333 } | |
| 334 inet_ntop(sa->sa_family, addrp, addrstr, sizeof(addrstr)); | |
| 335 printf("%s: %s %s\n", ifa->ifa_name, family, addrstr); | |
| 336 } | |
| 337 #endif | |
| 338 | |
| 339 static void | |
| 340 _pr_QueryNetIfs(void) | |
| 341 { | |
| 342 struct ifaddrs *ifp; | |
| 343 struct ifaddrs *ifa; | |
| 344 | |
| 345 if (getifaddrs(&ifp) == -1) { | |
| 346 return; | |
| 347 } | |
| 348 for (ifa = ifp; ifa; ifa = ifa->ifa_next) { | |
| 349 struct sockaddr *sa; | |
| 350 | |
| 351 #ifdef DEBUG_QUERY_IFS | |
| 352 _pr_PrintIfaddrs(ifa); | |
| 353 #endif | |
| 354 sa = ifa->ifa_addr; | |
| 355 if (sa->sa_family == AF_INET) { | |
| 356 struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
| 357 if (sin->sin_addr.s_addr != htonl(INADDR_LOOPBACK)) { | |
| 358 _pr_have_inet_if = 1; | |
| 359 } | |
| 360 } else if (sa->sa_family == AF_INET6) { | |
| 361 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
| 362 if (!IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr) | |
| 363 && !IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) { | |
| 364 _pr_have_inet6_if = 1; | |
| 365 } | |
| 366 } | |
| 367 } | |
| 368 freeifaddrs(ifp); | |
| 369 } | |
| 370 | |
| 371 #else /* default */ | |
| 372 | |
| 373 /* | |
| 374 * Emulate the code in NSPR 4.2 or older. PR_GetIPNodeByName behaves | |
| 375 * as if the system had both IPv4 and IPv6 source addresses configured. | |
| 376 */ | |
| 377 static void | |
| 378 _pr_QueryNetIfs(void) | |
| 379 { | |
| 380 _pr_have_inet_if = PR_TRUE; | |
| 381 _pr_have_inet6_if = PR_TRUE; | |
| 382 } | |
| 383 | |
| 384 #endif | |
| 385 | |
| 386 #endif /* _PR_INET6 && _PR_HAVE_GETHOSTBYNAME2 */ | |
| 387 | |
| 388 void _PR_InitNet(void) | |
| 389 { | |
| 390 #if defined(XP_UNIX) | |
| 391 #ifdef HAVE_NETCONFIG | |
| 392 /* | |
| 393 * This one-liner prevents the endless re-open's and re-read's of | |
| 394 * /etc/netconfig on EACH and EVERY call to accept(), connect(), etc. | |
| 395 */ | |
| 396 (void)setnetconfig(); | |
| 397 #endif | |
| 398 #endif | |
| 399 #if !defined(_PR_NO_DNS_LOCK) | |
| 400 _pr_dnsLock = PR_NewLock(); | |
| 401 #endif | |
| 402 #if !defined(_PR_HAVE_GETPROTO_R) | |
| 403 _getproto_lock = PR_NewLock(); | |
| 404 #endif | |
| 405 #if defined(_PR_INET6) && defined(_PR_HAVE_GETHOSTBYNAME2) | |
| 406 _pr_query_ifs_lock = PR_NewLock(); | |
| 407 #endif | |
| 408 } | |
| 409 | |
| 410 void _PR_CleanupNet(void) | |
| 411 { | |
| 412 #if !defined(_PR_NO_DNS_LOCK) | |
| 413 if (_pr_dnsLock) { | |
| 414 PR_DestroyLock(_pr_dnsLock); | |
| 415 _pr_dnsLock = NULL; | |
| 416 } | |
| 417 #endif | |
| 418 #if !defined(_PR_HAVE_GETPROTO_R) | |
| 419 if (_getproto_lock) { | |
| 420 PR_DestroyLock(_getproto_lock); | |
| 421 _getproto_lock = NULL; | |
| 422 } | |
| 423 #endif | |
| 424 #if defined(_PR_INET6) && defined(_PR_HAVE_GETHOSTBYNAME2) | |
| 425 if (_pr_query_ifs_lock) { | |
| 426 PR_DestroyLock(_pr_query_ifs_lock); | |
| 427 _pr_query_ifs_lock = NULL; | |
| 428 } | |
| 429 #endif | |
| 430 } | |
| 431 | |
| 432 /* | |
| 433 ** Allocate space from the buffer, aligning it to "align" before doing | |
| 434 ** the allocation. "align" must be a power of 2. | |
| 435 */ | |
| 436 static char *Alloc(PRIntn amount, char **bufp, PRIntn *buflenp, PRIntn align) | |
| 437 { | |
| 438 char *buf = *bufp; | |
| 439 PRIntn buflen = *buflenp; | |
| 440 | |
| 441 if (align && ((long)buf & (align - 1))) { | |
| 442 PRIntn skip = align - ((ptrdiff_t)buf & (align - 1)); | |
| 443 if (buflen < skip) { | |
| 444 return 0; | |
| 445 } | |
| 446 buf += skip; | |
| 447 buflen -= skip; | |
| 448 } | |
| 449 if (buflen < amount) { | |
| 450 return 0; | |
| 451 } | |
| 452 *bufp = buf + amount; | |
| 453 *buflenp = buflen - amount; | |
| 454 return buf; | |
| 455 } | |
| 456 | |
| 457 typedef enum _PRIPAddrConversion { | |
| 458 _PRIPAddrNoConversion, | |
| 459 _PRIPAddrIPv4Mapped, | |
| 460 _PRIPAddrIPv4Compat | |
| 461 } _PRIPAddrConversion; | |
| 462 | |
| 463 /* | |
| 464 ** Convert an IPv4 address (v4) to an IPv4-mapped IPv6 address (v6). | |
| 465 */ | |
| 466 static void MakeIPv4MappedAddr(const char *v4, char *v6) | |
| 467 { | |
| 468 memset(v6, 0, 10); | |
| 469 memset(v6 + 10, 0xff, 2); | |
| 470 memcpy(v6 + 12, v4, 4); | |
| 471 } | |
| 472 | |
| 473 /* | |
| 474 ** Convert an IPv4 address (v4) to an IPv4-compatible IPv6 address (v6). | |
| 475 */ | |
| 476 static void MakeIPv4CompatAddr(const char *v4, char *v6) | |
| 477 { | |
| 478 memset(v6, 0, 12); | |
| 479 memcpy(v6 + 12, v4, 4); | |
| 480 } | |
| 481 | |
| 482 /* | |
| 483 ** Copy a hostent, and all of the memory that it refers to into | |
| 484 ** (hopefully) stacked buffers. | |
| 485 */ | |
| 486 static PRStatus CopyHostent( | |
| 487 struct hostent *from, | |
| 488 char **buf, | |
| 489 PRIntn *bufsize, | |
| 490 _PRIPAddrConversion conversion, | |
| 491 PRHostEnt *to) | |
| 492 { | |
| 493 PRIntn len, na; | |
| 494 char **ap; | |
| 495 | |
| 496 if (conversion != _PRIPAddrNoConversion | |
| 497 && from->h_addrtype == AF_INET) { | |
| 498 PR_ASSERT(from->h_length == 4); | |
| 499 to->h_addrtype = PR_AF_INET6; | |
| 500 to->h_length = 16; | |
| 501 } else { | |
| 502 #if defined(_PR_INET6) || defined(_PR_INET6_PROBE) | |
| 503 if (AF_INET6 == from->h_addrtype) | |
| 504 to->h_addrtype = PR_AF_INET6; | |
| 505 else | |
| 506 #endif | |
| 507 to->h_addrtype = from->h_addrtype; | |
| 508 to->h_length = from->h_length; | |
| 509 } | |
| 510 | |
| 511 /* Copy the official name */ | |
| 512 if (!from->h_name) return PR_FAILURE; | |
| 513 len = strlen(from->h_name) + 1; | |
| 514 to->h_name = Alloc(len, buf, bufsize, 0); | |
| 515 if (!to->h_name) return PR_FAILURE; | |
| 516 memcpy(to->h_name, from->h_name, len); | |
| 517 | |
| 518 /* Count the aliases, then allocate storage for the pointers */ | |
| 519 if (!from->h_aliases) { | |
| 520 na = 1; | |
| 521 } else { | |
| 522 for (na = 1, ap = from->h_aliases; *ap != 0; na++, ap++){;} /* n
othing to execute */ | |
| 523 } | |
| 524 to->h_aliases = (char**)Alloc( | |
| 525 na * sizeof(char*), buf, bufsize, sizeof(char**)); | |
| 526 if (!to->h_aliases) return PR_FAILURE; | |
| 527 | |
| 528 /* Copy the aliases, one at a time */ | |
| 529 if (!from->h_aliases) { | |
| 530 to->h_aliases[0] = 0; | |
| 531 } else { | |
| 532 for (na = 0, ap = from->h_aliases; *ap != 0; na++, ap++) { | |
| 533 len = strlen(*ap) + 1; | |
| 534 to->h_aliases[na] = Alloc(len, buf, bufsize, 0); | |
| 535 if (!to->h_aliases[na]) return PR_FAILURE; | |
| 536 memcpy(to->h_aliases[na], *ap, len); | |
| 537 } | |
| 538 to->h_aliases[na] = 0; | |
| 539 } | |
| 540 | |
| 541 /* Count the addresses, then allocate storage for the pointers */ | |
| 542 for (na = 1, ap = from->h_addr_list; *ap != 0; na++, ap++){;} /* nothing
to execute */ | |
| 543 to->h_addr_list = (char**)Alloc( | |
| 544 na * sizeof(char*), buf, bufsize, sizeof(char**)); | |
| 545 if (!to->h_addr_list) return PR_FAILURE; | |
| 546 | |
| 547 /* Copy the addresses, one at a time */ | |
| 548 for (na = 0, ap = from->h_addr_list; *ap != 0; na++, ap++) { | |
| 549 to->h_addr_list[na] = Alloc(to->h_length, buf, bufsize, 0); | |
| 550 if (!to->h_addr_list[na]) return PR_FAILURE; | |
| 551 if (conversion != _PRIPAddrNoConversion | |
| 552 && from->h_addrtype == AF_INET) { | |
| 553 if (conversion == _PRIPAddrIPv4Mapped) { | |
| 554 MakeIPv4MappedAddr(*ap, to->h_addr_list[na]); | |
| 555 } else { | |
| 556 PR_ASSERT(conversion == _PRIPAddrIPv4Compat); | |
| 557 MakeIPv4CompatAddr(*ap, to->h_addr_list[na]); | |
| 558 } | |
| 559 } else { | |
| 560 memcpy(to->h_addr_list[na], *ap, to->h_length); | |
| 561 } | |
| 562 } | |
| 563 to->h_addr_list[na] = 0; | |
| 564 return PR_SUCCESS; | |
| 565 } | |
| 566 | |
| 567 #ifdef SYMBIAN | |
| 568 /* Set p_aliases by hand because Symbian's getprotobyname() returns NULL. */ | |
| 569 static void AssignAliases(struct protoent *Protoent, char** aliases) | |
| 570 { | |
| 571 if (NULL == Protoent->p_aliases) { | |
| 572 if (0 == strcmp(Protoent->p_name, "ip")) | |
| 573 aliases[0] = "IP"; | |
| 574 else if (0 == strcmp(Protoent->p_name, "tcp")) | |
| 575 aliases[0] = "TCP"; | |
| 576 else if (0 == strcmp(Protoent->p_name, "udp")) | |
| 577 aliases[0] = "UDP"; | |
| 578 else | |
| 579 aliases[0] = "UNKNOWN"; | |
| 580 aliases[1] = NULL; | |
| 581 Protoent->p_aliases = aliases; | |
| 582 } | |
| 583 } | |
| 584 #endif | |
| 585 | |
| 586 #if !defined(_PR_HAVE_GETPROTO_R) | |
| 587 /* | |
| 588 ** Copy a protoent, and all of the memory that it refers to into | |
| 589 ** (hopefully) stacked buffers. | |
| 590 */ | |
| 591 static PRStatus CopyProtoent( | |
| 592 struct protoent *from, char *buf, PRIntn bufsize, PRProtoEnt *to) | |
| 593 { | |
| 594 PRIntn len, na; | |
| 595 char **ap; | |
| 596 | |
| 597 /* Do the easy stuff */ | |
| 598 to->p_num = from->p_proto; | |
| 599 | |
| 600 /* Copy the official name */ | |
| 601 if (!from->p_name) return PR_FAILURE; | |
| 602 len = strlen(from->p_name) + 1; | |
| 603 to->p_name = Alloc(len, &buf, &bufsize, 0); | |
| 604 if (!to->p_name) return PR_FAILURE; | |
| 605 memcpy(to->p_name, from->p_name, len); | |
| 606 | |
| 607 /* Count the aliases, then allocate storage for the pointers */ | |
| 608 for (na = 1, ap = from->p_aliases; *ap != 0; na++, ap++){;} /* nothing t
o execute */ | |
| 609 to->p_aliases = (char**)Alloc( | |
| 610 na * sizeof(char*), &buf, &bufsize, sizeof(char**)); | |
| 611 if (!to->p_aliases) return PR_FAILURE; | |
| 612 | |
| 613 /* Copy the aliases, one at a time */ | |
| 614 for (na = 0, ap = from->p_aliases; *ap != 0; na++, ap++) { | |
| 615 len = strlen(*ap) + 1; | |
| 616 to->p_aliases[na] = Alloc(len, &buf, &bufsize, 0); | |
| 617 if (!to->p_aliases[na]) return PR_FAILURE; | |
| 618 memcpy(to->p_aliases[na], *ap, len); | |
| 619 } | |
| 620 to->p_aliases[na] = 0; | |
| 621 | |
| 622 return PR_SUCCESS; | |
| 623 } | |
| 624 #endif /* !defined(_PR_HAVE_GETPROTO_R) */ | |
| 625 | |
| 626 /* | |
| 627 * ################################################################# | |
| 628 * NOTE: tmphe, tmpbuf, bufsize, h, and h_err are local variables | |
| 629 * or arguments of PR_GetHostByName, PR_GetIPNodeByName, and | |
| 630 * PR_GetHostByAddr. DO NOT CHANGE THE NAMES OF THESE LOCAL | |
| 631 * VARIABLES OR ARGUMENTS. | |
| 632 * ################################################################# | |
| 633 */ | |
| 634 #if defined(_PR_HAVE_GETHOST_R_INT) | |
| 635 | |
| 636 #define GETHOSTBYNAME(name) \ | |
| 637 (gethostbyname_r(name, &tmphe, tmpbuf, bufsize, &h, &h_err), h) | |
| 638 #define GETHOSTBYNAME2(name, af) \ | |
| 639 (gethostbyname2_r(name, af, &tmphe, tmpbuf, bufsize, &h, &h_err), h) | |
| 640 #define GETHOSTBYADDR(addr, addrlen, af) \ | |
| 641 (gethostbyaddr_r(addr, addrlen, af, \ | |
| 642 &tmphe, tmpbuf, bufsize, &h, &h_err), h) | |
| 643 | |
| 644 #elif defined(_PR_HAVE_GETHOST_R_POINTER) | |
| 645 | |
| 646 #define GETHOSTBYNAME(name) \ | |
| 647 gethostbyname_r(name, &tmphe, tmpbuf, bufsize, &h_err) | |
| 648 #define GETHOSTBYNAME2(name, af) \ | |
| 649 gethostbyname2_r(name, af, &tmphe, tmpbuf, bufsize, &h_err) | |
| 650 #define GETHOSTBYADDR(addr, addrlen, af) \ | |
| 651 gethostbyaddr_r(addr, addrlen, af, &tmphe, tmpbuf, bufsize, &h_err) | |
| 652 | |
| 653 #else | |
| 654 | |
| 655 #define GETHOSTBYNAME(name) gethostbyname(name) | |
| 656 #define GETHOSTBYNAME2(name, af) gethostbyname2(name, af) | |
| 657 #define GETHOSTBYADDR(addr, addrlen, af) gethostbyaddr(addr, addrlen, af) | |
| 658 | |
| 659 #endif /* definition of GETHOSTBYXXX */ | |
| 660 | |
| 661 PR_IMPLEMENT(PRStatus) PR_GetHostByName( | |
| 662 const char *name, char *buf, PRIntn bufsize, PRHostEnt *hp) | |
| 663 { | |
| 664 struct hostent *h; | |
| 665 PRStatus rv = PR_FAILURE; | |
| 666 #if defined(_PR_HAVE_GETHOST_R) | |
| 667 char localbuf[PR_NETDB_BUF_SIZE]; | |
| 668 char *tmpbuf; | |
| 669 struct hostent tmphe; | |
| 670 int h_err; | |
| 671 #endif | |
| 672 | |
| 673 if (!_pr_initialized) _PR_ImplicitInitialization(); | |
| 674 | |
| 675 #if defined(_PR_HAVE_GETHOST_R) | |
| 676 tmpbuf = localbuf; | |
| 677 if (bufsize > sizeof(localbuf)) | |
| 678 { | |
| 679 tmpbuf = (char *)PR_Malloc(bufsize); | |
| 680 if (NULL == tmpbuf) | |
| 681 { | |
| 682 PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0); | |
| 683 return rv; | |
| 684 } | |
| 685 } | |
| 686 #endif | |
| 687 | |
| 688 LOCK_DNS(); | |
| 689 | |
| 690 h = GETHOSTBYNAME(name); | |
| 691 | |
| 692 if (NULL == h) | |
| 693 { | |
| 694 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_GETHOST_ERRNO()); | |
| 695 } | |
| 696 else | |
| 697 { | |
| 698 _PRIPAddrConversion conversion = _PRIPAddrNoConversion; | |
| 699 rv = CopyHostent(h, &buf, &bufsize, conversion, hp); | |
| 700 if (PR_SUCCESS != rv) | |
| 701 PR_SetError(PR_INSUFFICIENT_RESOURCES_ERROR, 0); | |
| 702 } | |
| 703 UNLOCK_DNS(); | |
| 704 #if defined(_PR_HAVE_GETHOST_R) | |
| 705 if (tmpbuf != localbuf) | |
| 706 PR_Free(tmpbuf); | |
| 707 #endif | |
| 708 return rv; | |
| 709 } | |
| 710 | |
| 711 #if !defined(_PR_INET6) && \ | |
| 712 defined(_PR_INET6_PROBE) && defined(_PR_HAVE_GETIPNODEBYNAME) | |
| 713 typedef struct hostent * (*_pr_getipnodebyname_t)(const char *, int, | |
| 714
int, int *); | |
| 715 typedef struct hostent * (*_pr_getipnodebyaddr_t)(const void *, size_t, | |
| 716
int, int *); | |
| 717 typedef void (*_pr_freehostent_t)(struct hostent *); | |
| 718 static void * _pr_getipnodebyname_fp; | |
| 719 static void * _pr_getipnodebyaddr_fp; | |
| 720 static void * _pr_freehostent_fp; | |
| 721 | |
| 722 /* | |
| 723 * Look up the addresses of getipnodebyname, getipnodebyaddr, | |
| 724 * and freehostent. | |
| 725 */ | |
| 726 PRStatus | |
| 727 _pr_find_getipnodebyname(void) | |
| 728 { | |
| 729 PRLibrary *lib; | |
| 730 PRStatus rv; | |
| 731 #define GETIPNODEBYNAME "getipnodebyname" | |
| 732 #define GETIPNODEBYADDR "getipnodebyaddr" | |
| 733 #define FREEHOSTENT "freehostent" | |
| 734 | |
| 735 _pr_getipnodebyname_fp = PR_FindSymbolAndLibrary(GETIPNODEBYNAME, &lib); | |
| 736 if (NULL != _pr_getipnodebyname_fp) { | |
| 737 _pr_freehostent_fp = PR_FindSymbol(lib, FREEHOSTENT); | |
| 738 if (NULL != _pr_freehostent_fp) { | |
| 739 _pr_getipnodebyaddr_fp = PR_FindSymbol(lib, GETIPNODEBYADDR); | |
| 740 if (NULL != _pr_getipnodebyaddr_fp) | |
| 741 rv = PR_SUCCESS; | |
| 742 else | |
| 743 rv = PR_FAILURE; | |
| 744 } else | |
| 745 rv = PR_FAILURE; | |
| 746 (void)PR_UnloadLibrary(lib); | |
| 747 } else | |
| 748 rv = PR_FAILURE; | |
| 749 return rv; | |
| 750 } | |
| 751 #endif | |
| 752 | |
| 753 #if defined(_PR_INET6) && defined(_PR_HAVE_GETHOSTBYNAME2) | |
| 754 /* | |
| 755 ** Append the V4 addresses to the end of the list | |
| 756 */ | |
| 757 static PRStatus AppendV4AddrsToHostent( | |
| 758 struct hostent *from, | |
| 759 char **buf, | |
| 760 PRIntn *bufsize, | |
| 761 PRHostEnt *to) | |
| 762 { | |
| 763 PRIntn na, na_old; | |
| 764 char **ap; | |
| 765 char **new_addr_list; | |
| 766 | |
| 767 /* Count the addresses, then grow storage for the pointers */ | |
| 768 for (na_old = 0, ap = to->h_addr_list; *ap != 0; na_old++, ap++) | |
| 769 {;} /* nothing to execute */ | |
| 770 for (na = na_old + 1, ap = from->h_addr_list; *ap != 0; na++, ap++) | |
| 771 {;} /* nothing to execute */ | |
| 772 new_addr_list = (char**)Alloc( | |
| 773 na * sizeof(char*), buf, bufsize, sizeof(char**)); | |
| 774 if (!new_addr_list) return PR_FAILURE; | |
| 775 | |
| 776 /* Copy the V6 addresses, one at a time */ | |
| 777 for (na = 0, ap = to->h_addr_list; *ap != 0; na++, ap++) { | |
| 778 new_addr_list[na] = to->h_addr_list[na]; | |
| 779 } | |
| 780 to->h_addr_list = new_addr_list; | |
| 781 | |
| 782 /* Copy the V4 addresses, one at a time */ | |
| 783 for (ap = from->h_addr_list; *ap != 0; na++, ap++) { | |
| 784 to->h_addr_list[na] = Alloc(to->h_length, buf, bufsize, 0); | |
| 785 if (!to->h_addr_list[na]) return PR_FAILURE; | |
| 786 MakeIPv4MappedAddr(*ap, to->h_addr_list[na]); | |
| 787 } | |
| 788 to->h_addr_list[na] = 0; | |
| 789 return PR_SUCCESS; | |
| 790 } | |
| 791 #endif | |
| 792 | |
| 793 PR_IMPLEMENT(PRStatus) PR_GetIPNodeByName( | |
| 794 const char *name, PRUint16 af, PRIntn flags, | |
| 795 char *buf, PRIntn bufsize, PRHostEnt *hp) | |
| 796 { | |
| 797 struct hostent *h = 0; | |
| 798 PRStatus rv = PR_FAILURE; | |
| 799 #if defined(_PR_HAVE_GETHOST_R) | |
| 800 char localbuf[PR_NETDB_BUF_SIZE]; | |
| 801 char *tmpbuf; | |
| 802 struct hostent tmphe; | |
| 803 int h_err; | |
| 804 #endif | |
| 805 #if defined(_PR_HAVE_GETIPNODEBYNAME) | |
| 806 PRUint16 md_af = af; | |
| 807 int error_num; | |
| 808 int tmp_flags = 0; | |
| 809 #endif | |
| 810 #if defined(_PR_HAVE_GETHOSTBYNAME2) | |
| 811 PRBool did_af_inet = PR_FALSE; | |
| 812 #endif | |
| 813 | |
| 814 if (!_pr_initialized) _PR_ImplicitInitialization(); | |
| 815 | |
| 816 if (af != PR_AF_INET && af != PR_AF_INET6) { | |
| 817 PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0); | |
| 818 return PR_FAILURE; | |
| 819 } | |
| 820 | |
| 821 #if defined(_PR_INET6) && defined(_PR_HAVE_GETHOSTBYNAME2) | |
| 822 PR_Lock(_pr_query_ifs_lock); | |
| 823 /* | |
| 824 * Keep querying the presence of IPv4 and IPv6 interfaces until | |
| 825 * at least one is up. This allows us to detect the local | |
| 826 * machine going from offline to online. | |
| 827 */ | |
| 828 if (!_pr_have_inet_if && !_pr_have_inet6_if) { | |
| 829 _pr_QueryNetIfs(); | |
| 830 #ifdef DEBUG_QUERY_IFS | |
| 831 if (_pr_have_inet_if) | |
| 832 printf("Have IPv4 source address\n"); | |
| 833 if (_pr_have_inet6_if) | |
| 834 printf("Have IPv6 source address\n"); | |
| 835 #endif | |
| 836 } | |
| 837 PR_Unlock(_pr_query_ifs_lock); | |
| 838 #endif | |
| 839 | |
| 840 #if defined(_PR_HAVE_GETIPNODEBYNAME) | |
| 841 if (flags & PR_AI_V4MAPPED) | |
| 842 tmp_flags |= AI_V4MAPPED; | |
| 843 if (flags & PR_AI_ADDRCONFIG) | |
| 844 tmp_flags |= AI_ADDRCONFIG; | |
| 845 if (flags & PR_AI_ALL) | |
| 846 tmp_flags |= AI_ALL; | |
| 847 if (af == PR_AF_INET6) | |
| 848 md_af = AF_INET6; | |
| 849 else | |
| 850 md_af = af; | |
| 851 #endif | |
| 852 | |
| 853 #if defined(_PR_HAVE_GETHOST_R) | |
| 854 tmpbuf = localbuf; | |
| 855 if (bufsize > sizeof(localbuf)) | |
| 856 { | |
| 857 tmpbuf = (char *)PR_Malloc(bufsize); | |
| 858 if (NULL == tmpbuf) | |
| 859 { | |
| 860 PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0); | |
| 861 return rv; | |
| 862 } | |
| 863 } | |
| 864 #endif | |
| 865 | |
| 866 /* Do not need to lock the DNS lock if getipnodebyname() is called */ | |
| 867 #ifdef _PR_INET6 | |
| 868 #ifdef _PR_HAVE_GETHOSTBYNAME2 | |
| 869 LOCK_DNS(); | |
| 870 if (af == PR_AF_INET6) | |
| 871 { | |
| 872 if ((flags & PR_AI_ADDRCONFIG) == 0 || _pr_have_inet6_if) | |
| 873 { | |
| 874 #ifdef _PR_INET6_PROBE | |
| 875 if (_pr_ipv6_is_present()) | |
| 876 #endif | |
| 877 h = GETHOSTBYNAME2(name, AF_INET6); | |
| 878 } | |
| 879 if ((NULL == h) && (flags & PR_AI_V4MAPPED) | |
| 880 && ((flags & PR_AI_ADDRCONFIG) == 0 || _pr_have_inet_if)) | |
| 881 { | |
| 882 did_af_inet = PR_TRUE; | |
| 883 h = GETHOSTBYNAME2(name, AF_INET); | |
| 884 } | |
| 885 } | |
| 886 else | |
| 887 { | |
| 888 if ((flags & PR_AI_ADDRCONFIG) == 0 || _pr_have_inet_if) | |
| 889 { | |
| 890 did_af_inet = PR_TRUE; | |
| 891 h = GETHOSTBYNAME2(name, af); | |
| 892 } | |
| 893 } | |
| 894 #elif defined(_PR_HAVE_GETIPNODEBYNAME) | |
| 895 h = getipnodebyname(name, md_af, tmp_flags, &error_num); | |
| 896 #else | |
| 897 #error "Unknown name-to-address translation function" | |
| 898 #endif /* _PR_HAVE_GETHOSTBYNAME2 */ | |
| 899 #elif defined(_PR_INET6_PROBE) && defined(_PR_HAVE_GETIPNODEBYNAME) | |
| 900 if (_pr_ipv6_is_present()) | |
| 901 { | |
| 902 #ifdef PR_GETIPNODE_NOT_THREADSAFE | |
| 903 LOCK_DNS(); | |
| 904 #endif | |
| 905 h = (*((_pr_getipnodebyname_t)_pr_getipnodebyname_fp))(name, md_af, tmp_
flags, &error_num); | |
| 906 } | |
| 907 else | |
| 908 { | |
| 909 LOCK_DNS(); | |
| 910 h = GETHOSTBYNAME(name); | |
| 911 } | |
| 912 #else /* _PR_INET6 */ | |
| 913 LOCK_DNS(); | |
| 914 h = GETHOSTBYNAME(name); | |
| 915 #endif /* _PR_INET6 */ | |
| 916 | |
| 917 if (NULL == h) | |
| 918 { | |
| 919 #if defined(_PR_INET6) && defined(_PR_HAVE_GETIPNODEBYNAME) | |
| 920 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, error_num); | |
| 921 #elif defined(_PR_INET6_PROBE) && defined(_PR_HAVE_GETIPNODEBYNAME) | |
| 922 if (_pr_ipv6_is_present()) | |
| 923 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, error_num); | |
| 924 else | |
| 925 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_GETHOST_ERRNO()); | |
| 926 #else | |
| 927 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_GETHOST_ERRNO()); | |
| 928 #endif | |
| 929 } | |
| 930 else | |
| 931 { | |
| 932 _PRIPAddrConversion conversion = _PRIPAddrNoConversion; | |
| 933 | |
| 934 if (af == PR_AF_INET6) conversion = _PRIPAddrIPv4Mapped; | |
| 935 rv = CopyHostent(h, &buf, &bufsize, conversion, hp); | |
| 936 if (PR_SUCCESS != rv) | |
| 937 PR_SetError(PR_INSUFFICIENT_RESOURCES_ERROR, 0); | |
| 938 #if defined(_PR_INET6) && defined(_PR_HAVE_GETIPNODEBYNAME) | |
| 939 freehostent(h); | |
| 940 #elif defined(_PR_INET6_PROBE) && defined(_PR_HAVE_GETIPNODEBYNAME) | |
| 941 if (_pr_ipv6_is_present()) | |
| 942 (*((_pr_freehostent_t)_pr_freehostent_fp))(h); | |
| 943 #endif | |
| 944 #if defined(_PR_INET6) && defined(_PR_HAVE_GETHOSTBYNAME2) | |
| 945 if ((PR_SUCCESS == rv) && (flags & PR_AI_V4MAPPED) | |
| 946 && ((flags & PR_AI_ALL) | |
| 947 || ((flags & PR_AI_ADDRCONFIG) && _pr_have_inet_
if)) | |
| 948 && !did_af_inet && (h = GETHOSTBYNAME2(name, AF_
INET)) != 0) { | |
| 949 rv = AppendV4AddrsToHostent(h, &buf, &bufsize, hp); | |
| 950 if (PR_SUCCESS != rv) | |
| 951 PR_SetError(PR_INSUFFICIENT_RESOURCES_ERROR, 0); | |
| 952 } | |
| 953 #endif | |
| 954 } | |
| 955 | |
| 956 /* Must match the convoluted logic above for LOCK_DNS() */ | |
| 957 #ifdef _PR_INET6 | |
| 958 #ifdef _PR_HAVE_GETHOSTBYNAME2 | |
| 959 UNLOCK_DNS(); | |
| 960 #endif /* _PR_HAVE_GETHOSTBYNAME2 */ | |
| 961 #elif defined(_PR_INET6_PROBE) && defined(_PR_HAVE_GETIPNODEBYNAME) | |
| 962 #ifdef PR_GETIPNODE_NOT_THREADSAFE | |
| 963 UNLOCK_DNS(); | |
| 964 #else | |
| 965 if (!_pr_ipv6_is_present()) | |
| 966 UNLOCK_DNS(); | |
| 967 #endif | |
| 968 #else /* _PR_INET6 */ | |
| 969 UNLOCK_DNS(); | |
| 970 #endif /* _PR_INET6 */ | |
| 971 | |
| 972 #if defined(_PR_HAVE_GETHOST_R) | |
| 973 if (tmpbuf != localbuf) | |
| 974 PR_Free(tmpbuf); | |
| 975 #endif | |
| 976 | |
| 977 return rv; | |
| 978 } | |
| 979 | |
| 980 PR_IMPLEMENT(PRStatus) PR_GetHostByAddr( | |
| 981 const PRNetAddr *hostaddr, char *buf, PRIntn bufsize, PRHostEnt *hostentry) | |
| 982 { | |
| 983 struct hostent *h; | |
| 984 PRStatus rv = PR_FAILURE; | |
| 985 const void *addr; | |
| 986 PRUint32 tmp_ip; | |
| 987 int addrlen; | |
| 988 PRInt32 af; | |
| 989 #if defined(_PR_HAVE_GETHOST_R) | |
| 990 char localbuf[PR_NETDB_BUF_SIZE]; | |
| 991 char *tmpbuf; | |
| 992 struct hostent tmphe; | |
| 993 int h_err; | |
| 994 #endif | |
| 995 #if defined(_PR_HAVE_GETIPNODEBYADDR) | |
| 996 int error_num; | |
| 997 #endif | |
| 998 | |
| 999 if (!_pr_initialized) _PR_ImplicitInitialization(); | |
| 1000 | |
| 1001 if (hostaddr->raw.family == PR_AF_INET6) | |
| 1002 { | |
| 1003 #if defined(_PR_INET6_PROBE) | |
| 1004 af = _pr_ipv6_is_present() ? AF_INET6 : AF_INET; | |
| 1005 #elif defined(_PR_INET6) | |
| 1006 af = AF_INET6; | |
| 1007 #else | |
| 1008 af = AF_INET; | |
| 1009 #endif | |
| 1010 #if defined(_PR_GHBA_DISALLOW_V4MAPPED) | |
| 1011 if (_PR_IN6_IS_ADDR_V4MAPPED(&hostaddr->ipv6.ip)) | |
| 1012 af = AF_INET; | |
| 1013 #endif | |
| 1014 } | |
| 1015 else | |
| 1016 { | |
| 1017 PR_ASSERT(hostaddr->raw.family == AF_INET); | |
| 1018 af = AF_INET; | |
| 1019 } | |
| 1020 if (hostaddr->raw.family == PR_AF_INET6) { | |
| 1021 #if defined(_PR_INET6) || defined(_PR_INET6_PROBE) | |
| 1022 if (af == AF_INET6) { | |
| 1023 addr = &hostaddr->ipv6.ip; | |
| 1024 addrlen = sizeof(hostaddr->ipv6.ip); | |
| 1025 } | |
| 1026 else | |
| 1027 #endif | |
| 1028 { | |
| 1029 PR_ASSERT(af == AF_INET); | |
| 1030 if (!_PR_IN6_IS_ADDR_V4MAPPED(&hostaddr->ipv6.ip)) { | |
| 1031 PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0); | |
| 1032 return rv; | |
| 1033 } | |
| 1034 tmp_ip = _PR_IN6_V4MAPPED_TO_IPADDR((PRIPv6Addr *) | |
| 1035
&hostaddr->ipv6.ip); | |
| 1036 addr = &tmp_ip; | |
| 1037 addrlen = sizeof(tmp_ip); | |
| 1038 } | |
| 1039 } else { | |
| 1040 PR_ASSERT(hostaddr->raw.family == AF_INET); | |
| 1041 PR_ASSERT(af == AF_INET); | |
| 1042 addr = &hostaddr->inet.ip; | |
| 1043 addrlen = sizeof(hostaddr->inet.ip); | |
| 1044 } | |
| 1045 | |
| 1046 #if defined(_PR_HAVE_GETHOST_R) | |
| 1047 tmpbuf = localbuf; | |
| 1048 if (bufsize > sizeof(localbuf)) | |
| 1049 { | |
| 1050 tmpbuf = (char *)PR_Malloc(bufsize); | |
| 1051 if (NULL == tmpbuf) | |
| 1052 { | |
| 1053 PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0); | |
| 1054 return rv; | |
| 1055 } | |
| 1056 } | |
| 1057 #endif | |
| 1058 | |
| 1059 /* Do not need to lock the DNS lock if getipnodebyaddr() is called */ | |
| 1060 #if defined(_PR_HAVE_GETIPNODEBYADDR) && defined(_PR_INET6) | |
| 1061 h = getipnodebyaddr(addr, addrlen, af, &error_num); | |
| 1062 #elif defined(_PR_HAVE_GETIPNODEBYADDR) && defined(_PR_INET6_PROBE) | |
| 1063 if (_pr_ipv6_is_present()) | |
| 1064 { | |
| 1065 #ifdef PR_GETIPNODE_NOT_THREADSAFE | |
| 1066 LOCK_DNS(); | |
| 1067 #endif | |
| 1068 h = (*((_pr_getipnodebyaddr_t)_pr_getipnodebyaddr_fp))(addr, addrlen, | |
| 1069 af, &error_num); | |
| 1070 } | |
| 1071 else | |
| 1072 { | |
| 1073 LOCK_DNS(); | |
| 1074 h = GETHOSTBYADDR(addr, addrlen, af); | |
| 1075 } | |
| 1076 #else /* _PR_HAVE_GETIPNODEBYADDR */ | |
| 1077 LOCK_DNS(); | |
| 1078 h = GETHOSTBYADDR(addr, addrlen, af); | |
| 1079 #endif /* _PR_HAVE_GETIPNODEBYADDR */ | |
| 1080 if (NULL == h) | |
| 1081 { | |
| 1082 #if defined(_PR_INET6) && defined(_PR_HAVE_GETIPNODEBYADDR) | |
| 1083 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, error_num); | |
| 1084 #elif defined(_PR_INET6_PROBE) && defined(_PR_HAVE_GETIPNODEBYADDR) | |
| 1085 if (_pr_ipv6_is_present()) | |
| 1086 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, error_num); | |
| 1087 else | |
| 1088 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_GETHOST_ERRNO()); | |
| 1089 #else | |
| 1090 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_GETHOST_ERRNO()); | |
| 1091 #endif | |
| 1092 } | |
| 1093 else | |
| 1094 { | |
| 1095 _PRIPAddrConversion conversion = _PRIPAddrNoConversion; | |
| 1096 if (hostaddr->raw.family == PR_AF_INET6) { | |
| 1097 if (af == AF_INET) { | |
| 1098 if (_PR_IN6_IS_ADDR_V4MAPPED((PRIPv6Addr*) | |
| 1099
&hostaddr->ipv6.ip)) { | |
| 1100 conversion = _PRIPAddrIPv4Mapped; | |
| 1101 } else if (_PR_IN6_IS_ADDR_V4COMPAT((PRIPv6Addr
*) | |
| 1102
&hostaddr->ipv6.ip)) { | |
| 1103 conversion = _PRIPAddrIPv4Compat; | |
| 1104 } | |
| 1105 } | |
| 1106 } | |
| 1107 rv = CopyHostent(h, &buf, &bufsize, conversion, hostentry); | |
| 1108 if (PR_SUCCESS != rv) { | |
| 1109 PR_SetError(PR_INSUFFICIENT_RESOURCES_ERROR, 0); | |
| 1110 } | |
| 1111 #if defined(_PR_INET6) && defined(_PR_HAVE_GETIPNODEBYADDR) | |
| 1112 freehostent(h); | |
| 1113 #elif defined(_PR_INET6_PROBE) && defined(_PR_HAVE_GETIPNODEBYADDR) | |
| 1114 if (_pr_ipv6_is_present()) | |
| 1115 (*((_pr_freehostent_t)_pr_freehostent_fp))(h); | |
| 1116 #endif | |
| 1117 } | |
| 1118 | |
| 1119 /* Must match the convoluted logic above for LOCK_DNS() */ | |
| 1120 #if defined(_PR_HAVE_GETIPNODEBYADDR) && defined(_PR_INET6) | |
| 1121 #elif defined(_PR_HAVE_GETIPNODEBYADDR) && defined(_PR_INET6_PROBE) | |
| 1122 #ifdef PR_GETIPNODE_NOT_THREADSAFE | |
| 1123 UNLOCK_DNS(); | |
| 1124 #else | |
| 1125 if (!_pr_ipv6_is_present()) | |
| 1126 UNLOCK_DNS(); | |
| 1127 #endif | |
| 1128 #else /* _PR_HAVE_GETIPNODEBYADDR */ | |
| 1129 UNLOCK_DNS(); | |
| 1130 #endif /* _PR_HAVE_GETIPNODEBYADDR */ | |
| 1131 | |
| 1132 #if defined(_PR_HAVE_GETHOST_R) | |
| 1133 if (tmpbuf != localbuf) | |
| 1134 PR_Free(tmpbuf); | |
| 1135 #endif | |
| 1136 | |
| 1137 return rv; | |
| 1138 } | |
| 1139 | |
| 1140 /******************************************************************************/ | |
| 1141 /* | |
| 1142 * Some systems define a reentrant version of getprotobyname(). Too bad | |
| 1143 * the signature isn't always the same. But hey, they tried. If there | |
| 1144 * is such a definition, use it. Otherwise, grab a lock and do it here. | |
| 1145 */ | |
| 1146 /******************************************************************************/ | |
| 1147 | |
| 1148 #if !defined(_PR_HAVE_GETPROTO_R) | |
| 1149 /* | |
| 1150 * This may seem like a silly thing to do, but the compiler SHOULD | |
| 1151 * complain if getprotobyname_r() is implemented on some system and | |
| 1152 * we're not using it. For sure these signatures are different than | |
| 1153 * any usable implementation. | |
| 1154 */ | |
| 1155 | |
| 1156 #if defined(ANDROID) | |
| 1157 /* Android's Bionic libc system includes prototypes for these in netdb.h, | |
| 1158 * but doesn't actually include implementations. It uses the 5-arg form, | |
| 1159 * so these functions end up not matching the prototype. So just rename | |
| 1160 * them if not found. | |
| 1161 */ | |
| 1162 #define getprotobyname_r _pr_getprotobyname_r | |
| 1163 #define getprotobynumber_r _pr_getprotobynumber_r | |
| 1164 #endif | |
| 1165 | |
| 1166 static struct protoent *getprotobyname_r(const char* name) | |
| 1167 { | |
| 1168 return getprotobyname(name); | |
| 1169 } /* getprotobyname_r */ | |
| 1170 | |
| 1171 static struct protoent *getprotobynumber_r(PRInt32 number) | |
| 1172 { | |
| 1173 return getprotobynumber(number); | |
| 1174 } /* getprotobynumber_r */ | |
| 1175 | |
| 1176 #endif /* !defined(_PR_HAVE_GETPROTO_R) */ | |
| 1177 | |
| 1178 PR_IMPLEMENT(PRStatus) PR_GetProtoByName( | |
| 1179 const char* name, char* buffer, PRInt32 buflen, PRProtoEnt* result) | |
| 1180 { | |
| 1181 PRStatus rv = PR_SUCCESS; | |
| 1182 #if defined(_PR_HAVE_GETPROTO_R) | |
| 1183 struct protoent* res = (struct protoent*)result; | |
| 1184 #endif | |
| 1185 | |
| 1186 if (!_pr_initialized) _PR_ImplicitInitialization(); | |
| 1187 | |
| 1188 #if defined(_PR_HAVE_GETPROTO_R_INT) | |
| 1189 { | |
| 1190 /* | |
| 1191 ** The protoent_data has a pointer as the first field. | |
| 1192 ** That implies the buffer better be aligned, and char* | |
| 1193 ** doesn't promise much. | |
| 1194 */ | |
| 1195 PRUptrdiff aligned = (PRUptrdiff)buffer; | |
| 1196 if (0 != (aligned & (sizeof(struct protoent_data*) - 1))) | |
| 1197 { | |
| 1198 aligned += sizeof(struct protoent_data*) - 1; | |
| 1199 aligned &= ~(sizeof(struct protoent_data*) - 1); | |
| 1200 buflen -= (aligned - (PRUptrdiff)buffer); | |
| 1201 buffer = (char*)aligned; | |
| 1202 } | |
| 1203 } | |
| 1204 #endif /* defined(_PR_HAVE_GETPROTO_R_INT) */ | |
| 1205 | |
| 1206 if (PR_NETDB_BUF_SIZE > buflen) | |
| 1207 { | |
| 1208 PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0); | |
| 1209 return PR_FAILURE; | |
| 1210 } | |
| 1211 | |
| 1212 #if defined(_PR_HAVE_GETPROTO_R_POINTER) | |
| 1213 if (NULL == getprotobyname_r(name, res, buffer, buflen)) | |
| 1214 { | |
| 1215 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_ERRNO()); | |
| 1216 return PR_FAILURE; | |
| 1217 } | |
| 1218 #elif defined(_PR_HAVE_GETPROTO_R_INT) | |
| 1219 /* | |
| 1220 ** The buffer needs to be zero'd, and it should be | |
| 1221 ** at least the size of a struct protoent_data. | |
| 1222 */ | |
| 1223 memset(buffer, 0, buflen); | |
| 1224 if (-1 == getprotobyname_r(name, res, (struct protoent_data*)buffer)) | |
| 1225 { | |
| 1226 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_ERRNO()); | |
| 1227 return PR_FAILURE; | |
| 1228 } | |
| 1229 #elif defined(_PR_HAVE_5_ARG_GETPROTO_R) | |
| 1230 /* The 5th argument for getprotobyname_r() cannot be NULL */ | |
| 1231 if (-1 == getprotobyname_r(name, res, buffer, buflen, &res)) | |
| 1232 { | |
| 1233 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_ERRNO()); | |
| 1234 return PR_FAILURE; | |
| 1235 } | |
| 1236 #else /* do it the hard way */ | |
| 1237 { | |
| 1238 struct protoent *staticBuf; | |
| 1239 PR_Lock(_getproto_lock); | |
| 1240 staticBuf = getprotobyname_r(name); | |
| 1241 if (NULL == staticBuf) | |
| 1242 { | |
| 1243 rv = PR_FAILURE; | |
| 1244 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_ERRNO()); | |
| 1245 } | |
| 1246 else | |
| 1247 { | |
| 1248 #if defined(SYMBIAN) | |
| 1249 char* aliases[2]; | |
| 1250 AssignAliases(staticBuf, aliases); | |
| 1251 #endif | |
| 1252 rv = CopyProtoent(staticBuf, buffer, buflen, result); | |
| 1253 if (PR_FAILURE == rv) | |
| 1254 PR_SetError(PR_INSUFFICIENT_RESOURCES_ERROR, 0); | |
| 1255 } | |
| 1256 PR_Unlock(_getproto_lock); | |
| 1257 } | |
| 1258 #endif /* all that */ | |
| 1259 return rv; | |
| 1260 } | |
| 1261 | |
| 1262 PR_IMPLEMENT(PRStatus) PR_GetProtoByNumber( | |
| 1263 PRInt32 number, char* buffer, PRInt32 buflen, PRProtoEnt* result) | |
| 1264 { | |
| 1265 PRStatus rv = PR_SUCCESS; | |
| 1266 #if defined(_PR_HAVE_GETPROTO_R) | |
| 1267 struct protoent* res = (struct protoent*)result; | |
| 1268 #endif | |
| 1269 | |
| 1270 if (!_pr_initialized) _PR_ImplicitInitialization(); | |
| 1271 | |
| 1272 #if defined(_PR_HAVE_GETPROTO_R_INT) | |
| 1273 { | |
| 1274 /* | |
| 1275 ** The protoent_data has a pointer as the first field. | |
| 1276 ** That implies the buffer better be aligned, and char* | |
| 1277 ** doesn't promise much. | |
| 1278 */ | |
| 1279 PRUptrdiff aligned = (PRUptrdiff)buffer; | |
| 1280 if (0 != (aligned & (sizeof(struct protoent_data*) - 1))) | |
| 1281 { | |
| 1282 aligned += sizeof(struct protoent_data*) - 1; | |
| 1283 aligned &= ~(sizeof(struct protoent_data*) - 1); | |
| 1284 buflen -= (aligned - (PRUptrdiff)buffer); | |
| 1285 buffer = (char*)aligned; | |
| 1286 } | |
| 1287 } | |
| 1288 #endif /* defined(_PR_HAVE_GETPROTO_R_INT) */ | |
| 1289 | |
| 1290 if (PR_NETDB_BUF_SIZE > buflen) | |
| 1291 { | |
| 1292 PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0); | |
| 1293 return PR_FAILURE; | |
| 1294 } | |
| 1295 | |
| 1296 #if defined(_PR_HAVE_GETPROTO_R_POINTER) | |
| 1297 if (NULL == getprotobynumber_r(number, res, buffer, buflen)) | |
| 1298 { | |
| 1299 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_ERRNO()); | |
| 1300 return PR_FAILURE; | |
| 1301 } | |
| 1302 | |
| 1303 #elif defined(_PR_HAVE_GETPROTO_R_INT) | |
| 1304 /* | |
| 1305 ** The buffer needs to be zero'd for these OS's. | |
| 1306 */ | |
| 1307 memset(buffer, 0, buflen); | |
| 1308 if (-1 == getprotobynumber_r(number, res, (struct protoent_data*)buffer)
) | |
| 1309 { | |
| 1310 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_ERRNO()); | |
| 1311 return PR_FAILURE; | |
| 1312 } | |
| 1313 #elif defined(_PR_HAVE_5_ARG_GETPROTO_R) | |
| 1314 /* The 5th argument for getprotobynumber_r() cannot be NULL */ | |
| 1315 if (-1 == getprotobynumber_r(number, res, buffer, buflen, &res)) | |
| 1316 { | |
| 1317 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_ERRNO()); | |
| 1318 return PR_FAILURE; | |
| 1319 } | |
| 1320 #else /* do it the hard way */ | |
| 1321 { | |
| 1322 struct protoent *staticBuf; | |
| 1323 PR_Lock(_getproto_lock); | |
| 1324 staticBuf = getprotobynumber_r(number); | |
| 1325 if (NULL == staticBuf) | |
| 1326 { | |
| 1327 rv = PR_FAILURE; | |
| 1328 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_ERRNO()); | |
| 1329 } | |
| 1330 else | |
| 1331 { | |
| 1332 #if defined(SYMBIAN) | |
| 1333 char* aliases[2]; | |
| 1334 AssignAliases(staticBuf, aliases); | |
| 1335 #endif | |
| 1336 rv = CopyProtoent(staticBuf, buffer, buflen, result); | |
| 1337 if (PR_FAILURE == rv) | |
| 1338 PR_SetError(PR_INSUFFICIENT_RESOURCES_ERROR, 0); | |
| 1339 } | |
| 1340 PR_Unlock(_getproto_lock); | |
| 1341 } | |
| 1342 #endif /* all that crap */ | |
| 1343 return rv; | |
| 1344 | |
| 1345 } | |
| 1346 | |
| 1347 PRUintn _PR_NetAddrSize(const PRNetAddr* addr) | |
| 1348 { | |
| 1349 PRUintn addrsize; | |
| 1350 | |
| 1351 /* | |
| 1352 * RFC 2553 added a new field (sin6_scope_id) to | |
| 1353 * struct sockaddr_in6. PRNetAddr's ipv6 member has a | |
| 1354 * scope_id field to match the new field. In order to | |
| 1355 * work with older implementations supporting RFC 2133, | |
| 1356 * we take the size of struct sockaddr_in6 instead of | |
| 1357 * addr->ipv6. | |
| 1358 */ | |
| 1359 if (AF_INET == addr->raw.family) | |
| 1360 addrsize = sizeof(addr->inet); | |
| 1361 else if (PR_AF_INET6 == addr->raw.family) | |
| 1362 #if defined(_PR_INET6) | |
| 1363 addrsize = sizeof(struct sockaddr_in6); | |
| 1364 #else | |
| 1365 addrsize = sizeof(addr->ipv6); | |
| 1366 #endif | |
| 1367 #if defined(XP_UNIX) || defined(XP_OS2) | |
| 1368 else if (AF_UNIX == addr->raw.family) | |
| 1369 addrsize = sizeof(addr->local); | |
| 1370 #endif | |
| 1371 else addrsize = 0; | |
| 1372 | |
| 1373 return addrsize; | |
| 1374 } /* _PR_NetAddrSize */ | |
| 1375 | |
| 1376 PR_IMPLEMENT(PRIntn) PR_EnumerateHostEnt( | |
| 1377 PRIntn enumIndex, const PRHostEnt *hostEnt, PRUint16 port, PRNetAddr *addres
s) | |
| 1378 { | |
| 1379 void *addr = hostEnt->h_addr_list[enumIndex++]; | |
| 1380 memset(address, 0, sizeof(PRNetAddr)); | |
| 1381 if (NULL == addr) enumIndex = 0; | |
| 1382 else | |
| 1383 { | |
| 1384 address->raw.family = hostEnt->h_addrtype; | |
| 1385 if (PR_AF_INET6 == hostEnt->h_addrtype) | |
| 1386 { | |
| 1387 address->ipv6.port = htons(port); | |
| 1388 address->ipv6.flowinfo = 0; | |
| 1389 address->ipv6.scope_id = 0; | |
| 1390 memcpy(&address->ipv6.ip, addr, hostEnt->h_length); | |
| 1391 } | |
| 1392 else | |
| 1393 { | |
| 1394 PR_ASSERT(AF_INET == hostEnt->h_addrtype); | |
| 1395 address->inet.port = htons(port); | |
| 1396 memcpy(&address->inet.ip, addr, hostEnt->h_length); | |
| 1397 } | |
| 1398 } | |
| 1399 return enumIndex; | |
| 1400 } /* PR_EnumerateHostEnt */ | |
| 1401 | |
| 1402 PR_IMPLEMENT(PRStatus) PR_InitializeNetAddr( | |
| 1403 PRNetAddrValue val, PRUint16 port, PRNetAddr *addr) | |
| 1404 { | |
| 1405 PRStatus rv = PR_SUCCESS; | |
| 1406 if (!_pr_initialized) _PR_ImplicitInitialization(); | |
| 1407 | |
| 1408 if (val != PR_IpAddrNull) memset(addr, 0, sizeof(addr->inet)); | |
| 1409 addr->inet.family = AF_INET; | |
| 1410 addr->inet.port = htons(port); | |
| 1411 switch (val) | |
| 1412 { | |
| 1413 case PR_IpAddrNull: | |
| 1414 break; /* don't overwrite the address */ | |
| 1415 case PR_IpAddrAny: | |
| 1416 addr->inet.ip = htonl(INADDR_ANY); | |
| 1417 break; | |
| 1418 case PR_IpAddrLoopback: | |
| 1419 addr->inet.ip = htonl(INADDR_LOOPBACK); | |
| 1420 break; | |
| 1421 default: | |
| 1422 PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0); | |
| 1423 rv = PR_FAILURE; | |
| 1424 } | |
| 1425 return rv; | |
| 1426 } /* PR_InitializeNetAddr */ | |
| 1427 | |
| 1428 PR_IMPLEMENT(PRStatus) PR_SetNetAddr( | |
| 1429 PRNetAddrValue val, PRUint16 af, PRUint16 port, PRNetAddr *addr) | |
| 1430 { | |
| 1431 PRStatus rv = PR_SUCCESS; | |
| 1432 if (!_pr_initialized) _PR_ImplicitInitialization(); | |
| 1433 | |
| 1434 if (af == PR_AF_INET6) | |
| 1435 { | |
| 1436 if (val != PR_IpAddrNull) memset(addr, 0, sizeof(addr->ipv6)); | |
| 1437 addr->ipv6.family = af; | |
| 1438 addr->ipv6.port = htons(port); | |
| 1439 addr->ipv6.flowinfo = 0; | |
| 1440 addr->ipv6.scope_id = 0; | |
| 1441 switch (val) | |
| 1442 { | |
| 1443 case PR_IpAddrNull: | |
| 1444 break; /* don't overwrite the address */ | |
| 1445 case PR_IpAddrAny: | |
| 1446 addr->ipv6.ip = _pr_in6addr_any; | |
| 1447 break; | |
| 1448 case PR_IpAddrLoopback: | |
| 1449 addr->ipv6.ip = _pr_in6addr_loopback; | |
| 1450 break; | |
| 1451 default: | |
| 1452 PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0); | |
| 1453 rv = PR_FAILURE; | |
| 1454 } | |
| 1455 } | |
| 1456 else | |
| 1457 { | |
| 1458 if (val != PR_IpAddrNull) memset(addr, 0, sizeof(addr->inet)); | |
| 1459 addr->inet.family = af; | |
| 1460 addr->inet.port = htons(port); | |
| 1461 switch (val) | |
| 1462 { | |
| 1463 case PR_IpAddrNull: | |
| 1464 break; /* don't overwrite the address */ | |
| 1465 case PR_IpAddrAny: | |
| 1466 addr->inet.ip = htonl(INADDR_ANY); | |
| 1467 break; | |
| 1468 case PR_IpAddrLoopback: | |
| 1469 addr->inet.ip = htonl(INADDR_LOOPBACK); | |
| 1470 break; | |
| 1471 default: | |
| 1472 PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0); | |
| 1473 rv = PR_FAILURE; | |
| 1474 } | |
| 1475 } | |
| 1476 return rv; | |
| 1477 } /* PR_SetNetAddr */ | |
| 1478 | |
| 1479 PR_IMPLEMENT(PRBool) | |
| 1480 PR_IsNetAddrType(const PRNetAddr *addr, PRNetAddrValue val) | |
| 1481 { | |
| 1482 if (addr->raw.family == PR_AF_INET6) { | |
| 1483 if (val == PR_IpAddrAny) { | |
| 1484 if (_PR_IN6_IS_ADDR_UNSPECIFIED((PRIPv6Addr *)&addr->ipv
6.ip)) { | |
| 1485 return PR_TRUE; | |
| 1486 } else if (_PR_IN6_IS_ADDR_V4MAPPED((PRIPv6Addr *)&addr-
>ipv6.ip) | |
| 1487 && _PR_IN6_V4MAPPED_TO_IPADDR((PRIPv6Add
r *)&addr->ipv6.ip) | |
| 1488 == htonl(INADDR_ANY)) { | |
| 1489 return PR_TRUE; | |
| 1490 } | |
| 1491 } else if (val == PR_IpAddrLoopback) { | |
| 1492 if (_PR_IN6_IS_ADDR_LOOPBACK((PRIPv6Addr *)&addr->ipv6.ip)) { | |
| 1493 return PR_TRUE; | |
| 1494 } else if (_PR_IN6_IS_ADDR_V4MAPPED((PRIPv6Addr *)&addr-
>ipv6.ip) | |
| 1495 && _PR_IN6_V4MAPPED_TO_IPADDR((PRIPv6Add
r *)&addr->ipv6.ip) | |
| 1496 == htonl(INADDR_LOOPBACK
)) { | |
| 1497 return PR_TRUE; | |
| 1498 } | |
| 1499 } else if (val == PR_IpAddrV4Mapped | |
| 1500 && _PR_IN6_IS_ADDR_V4MAPPED((PRIPv6Addr *)&addr->ipv6.ip)) { | |
| 1501 return PR_TRUE; | |
| 1502 } | |
| 1503 } else { | |
| 1504 if (addr->raw.family == AF_INET) { | |
| 1505 if (val == PR_IpAddrAny && addr->inet.ip == htonl(INADDR_ANY)) { | |
| 1506 return PR_TRUE; | |
| 1507 } else if (val == PR_IpAddrLoopback | |
| 1508 && addr->inet.ip == htonl(INADDR_LOOPBACK)) { | |
| 1509 return PR_TRUE; | |
| 1510 } | |
| 1511 } | |
| 1512 } | |
| 1513 return PR_FALSE; | |
| 1514 } | |
| 1515 | |
| 1516 extern int pr_inet_aton(const char *cp, PRUint32 *addr); | |
| 1517 | |
| 1518 #define XX 127 | |
| 1519 static const unsigned char index_hex[256] = { | |
| 1520 XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, | |
| 1521 XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, | |
| 1522 XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, | |
| 1523 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,XX,XX, XX,XX,XX,XX, | |
| 1524 XX,10,11,12, 13,14,15,XX, XX,XX,XX,XX, XX,XX,XX,XX, | |
| 1525 XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, | |
| 1526 XX,10,11,12, 13,14,15,XX, XX,XX,XX,XX, XX,XX,XX,XX, | |
| 1527 XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, | |
| 1528 XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, | |
| 1529 XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, | |
| 1530 XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, | |
| 1531 XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, | |
| 1532 XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, | |
| 1533 XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, | |
| 1534 XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, | |
| 1535 XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, | |
| 1536 }; | |
| 1537 | |
| 1538 /* | |
| 1539 * StringToV6Addr() returns 1 if the conversion succeeds, | |
| 1540 * or 0 if the input is not a valid IPv6 address string. | |
| 1541 * (Same as inet_pton(AF_INET6, string, addr).) | |
| 1542 */ | |
| 1543 static int StringToV6Addr(const char *string, PRIPv6Addr *addr) | |
| 1544 { | |
| 1545 const unsigned char *s = (const unsigned char *)string; | |
| 1546 int section = 0; /* index of the current section (a 16-bit | |
| 1547 * piece of the address */ | |
| 1548 int double_colon = -1; /* index of the section after the first | |
| 1549 * 16-bit group of zeros represented by | |
| 1550 * the double colon */ | |
| 1551 unsigned int val; | |
| 1552 int len; | |
| 1553 | |
| 1554 /* Handle initial (double) colon */ | |
| 1555 if (*s == ':') { | |
| 1556 if (s[1] != ':') return 0; | |
| 1557 s += 2; | |
| 1558 addr->pr_s6_addr16[0] = 0; | |
| 1559 section = double_colon = 1; | |
| 1560 } | |
| 1561 | |
| 1562 while (*s) { | |
| 1563 if (section == 8) return 0; /* too long */ | |
| 1564 if (*s == ':') { | |
| 1565 if (double_colon != -1) return 0; /* two double colons */ | |
| 1566 addr->pr_s6_addr16[section++] = 0; | |
| 1567 double_colon = section; | |
| 1568 s++; | |
| 1569 continue; | |
| 1570 } | |
| 1571 for (len = val = 0; len < 4 && index_hex[*s] != XX; len++) { | |
| 1572 val = (val << 4) + index_hex[*s++]; | |
| 1573 } | |
| 1574 if (*s == '.') { | |
| 1575 if (len == 0) return 0; /* nothing between : and . */ | |
| 1576 break; | |
| 1577 } | |
| 1578 if (*s == ':') { | |
| 1579 s++; | |
| 1580 if (!*s) return 0; /* cannot end with single colon */ | |
| 1581 } else if (*s) { | |
| 1582 return 0; /* bad character */ | |
| 1583 } | |
| 1584 addr->pr_s6_addr16[section++] = htons((unsigned short)val); | |
| 1585 } | |
| 1586 | |
| 1587 if (*s == '.') { | |
| 1588 /* Have a trailing v4 format address */ | |
| 1589 if (section > 6) return 0; /* not enough room */ | |
| 1590 | |
| 1591 /* | |
| 1592 * The number before the '.' is decimal, but we parsed it | |
| 1593 * as hex. That means it is in BCD. Check it for validity | |
| 1594 * and convert it to binary. | |
| 1595 */ | |
| 1596 if (val > 0x0255 || (val & 0xf0) > 0x90 || (val & 0xf) > 9) return 0; | |
| 1597 val = (val >> 8) * 100 + ((val >> 4) & 0xf) * 10 + (val & 0xf); | |
| 1598 addr->pr_s6_addr[2 * section] = val; | |
| 1599 | |
| 1600 s++; | |
| 1601 val = index_hex[*s++]; | |
| 1602 if (val > 9) return 0; | |
| 1603 while (*s >= '0' && *s <= '9') { | |
| 1604 val = val * 10 + *s++ - '0'; | |
| 1605 if (val > 255) return 0; | |
| 1606 } | |
| 1607 if (*s != '.') return 0; /* must have exactly 4 decimal numbers */ | |
| 1608 addr->pr_s6_addr[2 * section + 1] = val; | |
| 1609 section++; | |
| 1610 | |
| 1611 s++; | |
| 1612 val = index_hex[*s++]; | |
| 1613 if (val > 9) return 0; | |
| 1614 while (*s >= '0' && *s <= '9') { | |
| 1615 val = val * 10 + *s++ - '0'; | |
| 1616 if (val > 255) return 0; | |
| 1617 } | |
| 1618 if (*s != '.') return 0; /* must have exactly 4 decimal numbers */ | |
| 1619 addr->pr_s6_addr[2 * section] = val; | |
| 1620 | |
| 1621 s++; | |
| 1622 val = index_hex[*s++]; | |
| 1623 if (val > 9) return 0; | |
| 1624 while (*s >= '0' && *s <= '9') { | |
| 1625 val = val * 10 + *s++ - '0'; | |
| 1626 if (val > 255) return 0; | |
| 1627 } | |
| 1628 if (*s) return 0; /* must have exactly 4 decimal numbers */ | |
| 1629 addr->pr_s6_addr[2 * section + 1] = val; | |
| 1630 section++; | |
| 1631 } | |
| 1632 | |
| 1633 if (double_colon != -1) { | |
| 1634 /* Stretch the double colon */ | |
| 1635 int tosection; | |
| 1636 int ncopy = section - double_colon; | |
| 1637 for (tosection = 7; ncopy--; tosection--) { | |
| 1638 addr->pr_s6_addr16[tosection] = | |
| 1639 addr->pr_s6_addr16[double_colon + ncopy]; | |
| 1640 } | |
| 1641 while (tosection >= double_colon) { | |
| 1642 addr->pr_s6_addr16[tosection--] = 0; | |
| 1643 } | |
| 1644 } else if (section != 8) { | |
| 1645 return 0; /* too short */ | |
| 1646 } | |
| 1647 return 1; | |
| 1648 } | |
| 1649 #undef XX | |
| 1650 | |
| 1651 #ifndef _PR_HAVE_INET_NTOP | |
| 1652 static const char *basis_hex = "0123456789abcdef"; | |
| 1653 | |
| 1654 /* | |
| 1655 * V6AddrToString() returns a pointer to the buffer containing | |
| 1656 * the text string if the conversion succeeds, and NULL otherwise. | |
| 1657 * (Same as inet_ntop(AF_INET6, addr, buf, size), except that errno | |
| 1658 * is not set on failure.) | |
| 1659 */ | |
| 1660 static const char *V6AddrToString( | |
| 1661 const PRIPv6Addr *addr, char *buf, PRUint32 size) | |
| 1662 { | |
| 1663 #define STUFF(c) do { \ | |
| 1664 if (!size--) return NULL; \ | |
| 1665 *buf++ = (c); \ | |
| 1666 } while (0) | |
| 1667 | |
| 1668 int double_colon = -1; /* index of the first 16-bit | |
| 1669 * group of zeros represented | |
| 1670 * by the double colon */ | |
| 1671 int double_colon_length = 1; /* use double colon only if | |
| 1672 * there are two or more 16-bit | |
| 1673 * groups of zeros */ | |
| 1674 int zero_length; | |
| 1675 int section; | |
| 1676 unsigned int val; | |
| 1677 const char *bufcopy = buf; | |
| 1678 | |
| 1679 /* Scan to find the placement of the double colon */ | |
| 1680 for (section = 0; section < 8; section++) { | |
| 1681 if (addr->pr_s6_addr16[section] == 0) { | |
| 1682 zero_length = 1; | |
| 1683 section++; | |
| 1684 while (section < 8 && addr->pr_s6_addr16[section] == 0) { | |
| 1685 zero_length++; | |
| 1686 section++; | |
| 1687 } | |
| 1688 /* Select the longest sequence of zeros */ | |
| 1689 if (zero_length > double_colon_length) { | |
| 1690 double_colon = section - zero_length; | |
| 1691 double_colon_length = zero_length; | |
| 1692 } | |
| 1693 } | |
| 1694 } | |
| 1695 | |
| 1696 /* Now start converting to a string */ | |
| 1697 section = 0; | |
| 1698 | |
| 1699 if (double_colon == 0) { | |
| 1700 if (double_colon_length == 6 || | |
| 1701 (double_colon_length == 5 && addr->pr_s6_addr16[5] == 0xffff)) { | |
| 1702 /* ipv4 format address */ | |
| 1703 STUFF(':'); | |
| 1704 STUFF(':'); | |
| 1705 if (double_colon_length == 5) { | |
| 1706 STUFF('f'); | |
| 1707 STUFF('f'); | |
| 1708 STUFF('f'); | |
| 1709 STUFF('f'); | |
| 1710 STUFF(':'); | |
| 1711 } | |
| 1712 if (addr->pr_s6_addr[12] > 99) STUFF(addr->pr_s6_addr[12]/100 + '0')
; | |
| 1713 if (addr->pr_s6_addr[12] > 9) STUFF((addr->pr_s6_addr[12]%100)/10 +
'0'); | |
| 1714 STUFF(addr->pr_s6_addr[12]%10 + '0'); | |
| 1715 STUFF('.'); | |
| 1716 if (addr->pr_s6_addr[13] > 99) STUFF(addr->pr_s6_addr[13]/100 + '0')
; | |
| 1717 if (addr->pr_s6_addr[13] > 9) STUFF((addr->pr_s6_addr[13]%100)/10 +
'0'); | |
| 1718 STUFF(addr->pr_s6_addr[13]%10 + '0'); | |
| 1719 STUFF('.'); | |
| 1720 if (addr->pr_s6_addr[14] > 99) STUFF(addr->pr_s6_addr[14]/100 + '0')
; | |
| 1721 if (addr->pr_s6_addr[14] > 9) STUFF((addr->pr_s6_addr[14]%100)/10 +
'0'); | |
| 1722 STUFF(addr->pr_s6_addr[14]%10 + '0'); | |
| 1723 STUFF('.'); | |
| 1724 if (addr->pr_s6_addr[15] > 99) STUFF(addr->pr_s6_addr[15]/100 + '0')
; | |
| 1725 if (addr->pr_s6_addr[15] > 9) STUFF((addr->pr_s6_addr[15]%100)/10 +
'0'); | |
| 1726 STUFF(addr->pr_s6_addr[15]%10 + '0'); | |
| 1727 STUFF('\0'); | |
| 1728 return bufcopy; | |
| 1729 } | |
| 1730 } | |
| 1731 | |
| 1732 while (section < 8) { | |
| 1733 if (section == double_colon) { | |
| 1734 STUFF(':'); | |
| 1735 STUFF(':'); | |
| 1736 section += double_colon_length; | |
| 1737 continue; | |
| 1738 } | |
| 1739 val = ntohs(addr->pr_s6_addr16[section]); | |
| 1740 if (val > 0xfff) { | |
| 1741 STUFF(basis_hex[val >> 12]); | |
| 1742 } | |
| 1743 if (val > 0xff) { | |
| 1744 STUFF(basis_hex[(val >> 8) & 0xf]); | |
| 1745 } | |
| 1746 if (val > 0xf) { | |
| 1747 STUFF(basis_hex[(val >> 4) & 0xf]); | |
| 1748 } | |
| 1749 STUFF(basis_hex[val & 0xf]); | |
| 1750 section++; | |
| 1751 if (section < 8 && section != double_colon) STUFF(':'); | |
| 1752 } | |
| 1753 STUFF('\0'); | |
| 1754 return bufcopy; | |
| 1755 #undef STUFF | |
| 1756 } | |
| 1757 #endif /* !_PR_HAVE_INET_NTOP */ | |
| 1758 | |
| 1759 /* | |
| 1760 * Convert an IPv4 addr to an (IPv4-mapped) IPv6 addr | |
| 1761 */ | |
| 1762 PR_IMPLEMENT(void) PR_ConvertIPv4AddrToIPv6(PRUint32 v4addr, PRIPv6Addr *v6addr) | |
| 1763 { | |
| 1764 PRUint8 *dstp; | |
| 1765 dstp = v6addr->pr_s6_addr; | |
| 1766 memset(dstp, 0, 10); | |
| 1767 memset(dstp + 10, 0xff, 2); | |
| 1768 memcpy(dstp + 12,(char *) &v4addr, 4); | |
| 1769 } | |
| 1770 | |
| 1771 PR_IMPLEMENT(PRUint16) PR_ntohs(PRUint16 n) { return ntohs(n); } | |
| 1772 PR_IMPLEMENT(PRUint32) PR_ntohl(PRUint32 n) { return ntohl(n); } | |
| 1773 PR_IMPLEMENT(PRUint16) PR_htons(PRUint16 n) { return htons(n); } | |
| 1774 PR_IMPLEMENT(PRUint32) PR_htonl(PRUint32 n) { return htonl(n); } | |
| 1775 PR_IMPLEMENT(PRUint64) PR_ntohll(PRUint64 n) | |
| 1776 { | |
| 1777 #ifdef IS_BIG_ENDIAN | |
| 1778 return n; | |
| 1779 #else | |
| 1780 PRUint64 tmp; | |
| 1781 PRUint32 hi, lo; | |
| 1782 LL_L2UI(lo, n); | |
| 1783 LL_SHR(tmp, n, 32); | |
| 1784 LL_L2UI(hi, tmp); | |
| 1785 hi = PR_ntohl(hi); | |
| 1786 lo = PR_ntohl(lo); | |
| 1787 LL_UI2L(n, lo); | |
| 1788 LL_SHL(n, n, 32); | |
| 1789 LL_UI2L(tmp, hi); | |
| 1790 LL_ADD(n, n, tmp); | |
| 1791 return n; | |
| 1792 #endif | |
| 1793 } /* ntohll */ | |
| 1794 | |
| 1795 PR_IMPLEMENT(PRUint64) PR_htonll(PRUint64 n) | |
| 1796 { | |
| 1797 #ifdef IS_BIG_ENDIAN | |
| 1798 return n; | |
| 1799 #else | |
| 1800 PRUint64 tmp; | |
| 1801 PRUint32 hi, lo; | |
| 1802 LL_L2UI(lo, n); | |
| 1803 LL_SHR(tmp, n, 32); | |
| 1804 LL_L2UI(hi, tmp); | |
| 1805 hi = htonl(hi); | |
| 1806 lo = htonl(lo); | |
| 1807 LL_UI2L(n, lo); | |
| 1808 LL_SHL(n, n, 32); | |
| 1809 LL_UI2L(tmp, hi); | |
| 1810 LL_ADD(n, n, tmp); | |
| 1811 return n; | |
| 1812 #endif | |
| 1813 } /* htonll */ | |
| 1814 | |
| 1815 | |
| 1816 /* | |
| 1817 * Implementation of PR_GetAddrInfoByName and friends | |
| 1818 * | |
| 1819 * Compile-time options: | |
| 1820 * | |
| 1821 * _PR_HAVE_GETADDRINFO Define this macro if the target system provides | |
| 1822 * getaddrinfo. With this defined, NSPR will require | |
| 1823 * getaddrinfo at run time. If this if not defined, | |
| 1824 * then NSPR will attempt to dynamically resolve | |
| 1825 * getaddrinfo, falling back to PR_GetHostByName if | |
| 1826 * getaddrinfo does not exist on the target system. | |
| 1827 * | |
| 1828 * Since getaddrinfo is a relatively new system call on many systems, | |
| 1829 * we are forced to dynamically resolve it at run time in most cases. | |
| 1830 * The exception includes any system (such as Mac OS X) that is known to | |
| 1831 * provide getaddrinfo in all versions that NSPR cares to support. | |
| 1832 */ | |
| 1833 | |
| 1834 #if defined(_PR_HAVE_GETADDRINFO) | |
| 1835 | |
| 1836 #if defined(_PR_INET6) | |
| 1837 | |
| 1838 typedef struct addrinfo PRADDRINFO; | |
| 1839 #define GETADDRINFO getaddrinfo | |
| 1840 #define FREEADDRINFO freeaddrinfo | |
| 1841 #define GETNAMEINFO getnameinfo | |
| 1842 | |
| 1843 #elif defined(_PR_INET6_PROBE) | |
| 1844 | |
| 1845 typedef struct addrinfo PRADDRINFO; | |
| 1846 | |
| 1847 /* getaddrinfo/freeaddrinfo/getnameinfo prototypes */ | |
| 1848 #if defined(WIN32) | |
| 1849 #define FUNC_MODIFIER __stdcall | |
| 1850 #else | |
| 1851 #define FUNC_MODIFIER | |
| 1852 #endif | |
| 1853 typedef int (FUNC_MODIFIER * FN_GETADDRINFO) | |
| 1854 (const char *nodename, | |
| 1855 const char *servname, | |
| 1856 const PRADDRINFO *hints, | |
| 1857 PRADDRINFO **res); | |
| 1858 typedef int (FUNC_MODIFIER * FN_FREEADDRINFO) | |
| 1859 (PRADDRINFO *ai); | |
| 1860 typedef int (FUNC_MODIFIER * FN_GETNAMEINFO) | |
| 1861 (const struct sockaddr *addr, int addrlen, | |
| 1862 char *host, int hostlen, | |
| 1863 char *serv, int servlen, int flags); | |
| 1864 | |
| 1865 /* global state */ | |
| 1866 static FN_GETADDRINFO _pr_getaddrinfo = NULL; | |
| 1867 static FN_FREEADDRINFO _pr_freeaddrinfo = NULL; | |
| 1868 static FN_GETNAMEINFO _pr_getnameinfo = NULL; | |
| 1869 | |
| 1870 #define GETADDRINFO_SYMBOL "getaddrinfo" | |
| 1871 #define FREEADDRINFO_SYMBOL "freeaddrinfo" | |
| 1872 #define GETNAMEINFO_SYMBOL "getnameinfo" | |
| 1873 | |
| 1874 PRStatus | |
| 1875 _pr_find_getaddrinfo(void) | |
| 1876 { | |
| 1877 PRLibrary *lib; | |
| 1878 #ifdef WIN32 | |
| 1879 /* | |
| 1880 * On windows, we need to search ws2_32.dll or wship6.dll | |
| 1881 * (Microsoft IPv6 Technology Preview for Windows 2000) for | |
| 1882 * getaddrinfo and freeaddrinfo. These libraries might not | |
| 1883 * be loaded yet. | |
| 1884 */ | |
| 1885 const char *libname[] = { "ws2_32.dll", "wship6.dll" }; | |
| 1886 int i; | |
| 1887 | |
| 1888 for (i = 0; i < sizeof(libname)/sizeof(libname[0]); i++) { | |
| 1889 lib = PR_LoadLibrary(libname[i]); | |
| 1890 if (!lib) { | |
| 1891 continue; | |
| 1892 } | |
| 1893 _pr_getaddrinfo = (FN_GETADDRINFO) | |
| 1894 PR_FindFunctionSymbol(lib, GETADDRINFO_SYMBOL); | |
| 1895 if (!_pr_getaddrinfo) { | |
| 1896 PR_UnloadLibrary(lib); | |
| 1897 continue; | |
| 1898 } | |
| 1899 _pr_freeaddrinfo = (FN_FREEADDRINFO) | |
| 1900 PR_FindFunctionSymbol(lib, FREEADDRINFO_SYMBOL); | |
| 1901 _pr_getnameinfo = (FN_GETNAMEINFO) | |
| 1902 PR_FindFunctionSymbol(lib, GETNAMEINFO_SYMBOL); | |
| 1903 if (!_pr_freeaddrinfo || !_pr_getnameinfo) { | |
| 1904 PR_UnloadLibrary(lib); | |
| 1905 continue; | |
| 1906 } | |
| 1907 /* Keep the library loaded. */ | |
| 1908 return PR_SUCCESS; | |
| 1909 } | |
| 1910 return PR_FAILURE; | |
| 1911 #else | |
| 1912 /* | |
| 1913 * Resolve getaddrinfo by searching all loaded libraries. Then | |
| 1914 * search library containing getaddrinfo for freeaddrinfo. | |
| 1915 */ | |
| 1916 _pr_getaddrinfo = (FN_GETADDRINFO) | |
| 1917 PR_FindFunctionSymbolAndLibrary(GETADDRINFO_SYMBOL, &lib); | |
| 1918 if (!_pr_getaddrinfo) { | |
| 1919 return PR_FAILURE; | |
| 1920 } | |
| 1921 _pr_freeaddrinfo = (FN_FREEADDRINFO) | |
| 1922 PR_FindFunctionSymbol(lib, FREEADDRINFO_SYMBOL); | |
| 1923 _pr_getnameinfo = (FN_GETNAMEINFO) | |
| 1924 PR_FindFunctionSymbol(lib, GETNAMEINFO_SYMBOL); | |
| 1925 PR_UnloadLibrary(lib); | |
| 1926 if (!_pr_freeaddrinfo || !_pr_getnameinfo) { | |
| 1927 return PR_FAILURE; | |
| 1928 } | |
| 1929 return PR_SUCCESS; | |
| 1930 #endif | |
| 1931 } | |
| 1932 | |
| 1933 #define GETADDRINFO (*_pr_getaddrinfo) | |
| 1934 #define FREEADDRINFO (*_pr_freeaddrinfo) | |
| 1935 #define GETNAMEINFO (*_pr_getnameinfo) | |
| 1936 | |
| 1937 #endif /* _PR_INET6 */ | |
| 1938 | |
| 1939 #endif /* _PR_HAVE_GETADDRINFO */ | |
| 1940 | |
| 1941 #if !defined(_PR_HAVE_GETADDRINFO) || defined(_PR_INET6_PROBE) | |
| 1942 /* | |
| 1943 * If getaddrinfo does not exist, then we will fall back on | |
| 1944 * PR_GetHostByName, which requires that we allocate a buffer for the | |
| 1945 * PRHostEnt data structure and its members. | |
| 1946 */ | |
| 1947 typedef struct PRAddrInfoFB { | |
| 1948 char buf[PR_NETDB_BUF_SIZE]; | |
| 1949 PRHostEnt hostent; | |
| 1950 PRBool has_cname; | |
| 1951 } PRAddrInfoFB; | |
| 1952 | |
| 1953 static PRAddrInfo * | |
| 1954 pr_GetAddrInfoByNameFB(const char *hostname, | |
| 1955 PRUint16 af, | |
| 1956 PRIntn flags) | |
| 1957 { | |
| 1958 PRStatus rv; | |
| 1959 PRAddrInfoFB *ai; | |
| 1960 /* fallback on PR_GetHostByName */ | |
| 1961 ai = PR_NEW(PRAddrInfoFB); | |
| 1962 if (!ai) { | |
| 1963 PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0); | |
| 1964 return NULL; | |
| 1965 } | |
| 1966 rv = PR_GetHostByName(hostname, ai->buf, sizeof ai->buf, &ai->hostent); | |
| 1967 if (rv == PR_FAILURE) { | |
| 1968 PR_Free(ai); | |
| 1969 return NULL; | |
| 1970 } | |
| 1971 ai->has_cname = !(flags & PR_AI_NOCANONNAME); | |
| 1972 | |
| 1973 return (PRAddrInfo *) ai; | |
| 1974 } | |
| 1975 #endif /* !_PR_HAVE_GETADDRINFO || _PR_INET6_PROBE */ | |
| 1976 | |
| 1977 PR_IMPLEMENT(PRAddrInfo *) PR_GetAddrInfoByName(const char *hostname, | |
| 1978 PRUint16 af, | |
| 1979 PRIntn flags) | |
| 1980 { | |
| 1981 /* restrict input to supported values */ | |
| 1982 if ((af != PR_AF_INET && af != PR_AF_UNSPEC) || | |
| 1983 (flags & ~ PR_AI_NOCANONNAME) != PR_AI_ADDRCONFIG) { | |
| 1984 PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0); | |
| 1985 return NULL; | |
| 1986 } | |
| 1987 | |
| 1988 if (!_pr_initialized) _PR_ImplicitInitialization(); | |
| 1989 | |
| 1990 #if !defined(_PR_HAVE_GETADDRINFO) | |
| 1991 return pr_GetAddrInfoByNameFB(hostname, af, flags); | |
| 1992 #else | |
| 1993 #if defined(_PR_INET6_PROBE) | |
| 1994 if (!_pr_ipv6_is_present()) { | |
| 1995 return pr_GetAddrInfoByNameFB(hostname, af, flags); | |
| 1996 } | |
| 1997 #endif | |
| 1998 { | |
| 1999 PRADDRINFO *res, hints; | |
| 2000 int rv; | |
| 2001 | |
| 2002 /* | |
| 2003 * we assume a RFC 2553 compliant getaddrinfo. this may at some | |
| 2004 * point need to be customized as platforms begin to adopt the | |
| 2005 * RFC 3493. | |
| 2006 */ | |
| 2007 | |
| 2008 memset(&hints, 0, sizeof(hints)); | |
| 2009 if (!(flags & PR_AI_NOCANONNAME)) | |
| 2010 hints.ai_flags |= AI_CANONNAME; | |
| 2011 #ifdef AI_ADDRCONFIG | |
| 2012 /* | |
| 2013 * Propagate AI_ADDRCONFIG to the GETADDRINFO call if PR_AI_ADDRCONFIG | |
| 2014 * is set. | |
| 2015 * | |
| 2016 * Need a workaround for loopback host addresses: | |
| 2017 * The problem is that in glibc and Windows, AI_ADDRCONFIG applies the | |
| 2018 * existence of an outgoing network interface to IP addresses of the | |
| 2019 * loopback interface, due to a strict interpretation of the | |
| 2020 * specification. For example, if a computer does not have any | |
| 2021 * outgoing IPv6 network interface, but its loopback network interface | |
| 2022 * supports IPv6, a getaddrinfo call on "localhost" with AI_ADDRCONFIG | |
| 2023 * won't return the IPv6 loopback address "::1", because getaddrinfo | |
| 2024 * thinks the computer cannot connect to any IPv6 destination, | |
| 2025 * ignoring the remote vs. local/loopback distinction. | |
| 2026 */ | |
| 2027 if ((flags & PR_AI_ADDRCONFIG) && | |
| 2028 strcmp(hostname, "localhost") != 0 && | |
| 2029 strcmp(hostname, "localhost.localdomain") != 0 && | |
| 2030 strcmp(hostname, "localhost6") != 0 && | |
| 2031 strcmp(hostname, "localhost6.localdomain6") != 0) { | |
| 2032 hints.ai_flags |= AI_ADDRCONFIG; | |
| 2033 } | |
| 2034 #endif | |
| 2035 hints.ai_family = (af == PR_AF_INET) ? AF_INET : AF_UNSPEC; | |
| 2036 | |
| 2037 /* | |
| 2038 * it is important to select a socket type in the hints, otherwise we | |
| 2039 * will get back repetitive entries: one for each socket type. since | |
| 2040 * we do not expose ai_socktype through our API, it is okay to do this | |
| 2041 * here. the application may still choose to create a socket of some | |
| 2042 * other type. | |
| 2043 */ | |
| 2044 hints.ai_socktype = SOCK_STREAM; | |
| 2045 | |
| 2046 rv = GETADDRINFO(hostname, NULL, &hints, &res); | |
| 2047 #ifdef AI_ADDRCONFIG | |
| 2048 if (rv == EAI_BADFLAGS && (hints.ai_flags & AI_ADDRCONFIG)) { | |
| 2049 hints.ai_flags &= ~AI_ADDRCONFIG; | |
| 2050 rv = GETADDRINFO(hostname, NULL, &hints, &res); | |
| 2051 } | |
| 2052 #endif | |
| 2053 if (rv == 0) | |
| 2054 return (PRAddrInfo *) res; | |
| 2055 | |
| 2056 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, rv); | |
| 2057 } | |
| 2058 return NULL; | |
| 2059 #endif | |
| 2060 } | |
| 2061 | |
| 2062 PR_IMPLEMENT(void) PR_FreeAddrInfo(PRAddrInfo *ai) | |
| 2063 { | |
| 2064 #if defined(_PR_HAVE_GETADDRINFO) | |
| 2065 #if defined(_PR_INET6_PROBE) | |
| 2066 if (!_pr_ipv6_is_present()) | |
| 2067 PR_Free((PRAddrInfoFB *) ai); | |
| 2068 else | |
| 2069 #endif | |
| 2070 FREEADDRINFO((PRADDRINFO *) ai); | |
| 2071 #else | |
| 2072 PR_Free((PRAddrInfoFB *) ai); | |
| 2073 #endif | |
| 2074 } | |
| 2075 | |
| 2076 PR_IMPLEMENT(void *) PR_EnumerateAddrInfo(void *iterPtr, | |
| 2077 const PRAddrInfo *base, | |
| 2078 PRUint16 port, | |
| 2079 PRNetAddr *result) | |
| 2080 { | |
| 2081 #if defined(_PR_HAVE_GETADDRINFO) | |
| 2082 PRADDRINFO *ai; | |
| 2083 #if defined(_PR_INET6_PROBE) | |
| 2084 if (!_pr_ipv6_is_present()) { | |
| 2085 /* using PRAddrInfoFB */ | |
| 2086 PRIntn iter = (PRIntn)(PRPtrdiff) iterPtr; | |
| 2087 iter = PR_EnumerateHostEnt(iter, &((PRAddrInfoFB *) base)->hostent, port
, result); | |
| 2088 if (iter < 0) | |
| 2089 iter = 0; | |
| 2090 return (void *)(PRPtrdiff) iter; | |
| 2091 } | |
| 2092 #endif | |
| 2093 | |
| 2094 if (iterPtr) | |
| 2095 ai = ((PRADDRINFO *) iterPtr)->ai_next; | |
| 2096 else | |
| 2097 ai = (PRADDRINFO *) base; | |
| 2098 | |
| 2099 while (ai && ai->ai_addrlen > sizeof(PRNetAddr)) | |
| 2100 ai = ai->ai_next; | |
| 2101 | |
| 2102 if (ai) { | |
| 2103 /* copy sockaddr to PRNetAddr */ | |
| 2104 memcpy(result, ai->ai_addr, ai->ai_addrlen); | |
| 2105 result->raw.family = ai->ai_addr->sa_family; | |
| 2106 #ifdef _PR_INET6 | |
| 2107 if (AF_INET6 == result->raw.family) | |
| 2108 result->raw.family = PR_AF_INET6; | |
| 2109 #endif | |
| 2110 if (ai->ai_addrlen < sizeof(PRNetAddr)) | |
| 2111 memset(((char*)result)+ai->ai_addrlen, 0, sizeof(PRNetAddr) - ai->ai
_addrlen); | |
| 2112 | |
| 2113 if (result->raw.family == PR_AF_INET) | |
| 2114 result->inet.port = htons(port); | |
| 2115 else | |
| 2116 result->ipv6.port = htons(port); | |
| 2117 } | |
| 2118 | |
| 2119 return ai; | |
| 2120 #else | |
| 2121 /* using PRAddrInfoFB */ | |
| 2122 PRIntn iter = (PRIntn) iterPtr; | |
| 2123 iter = PR_EnumerateHostEnt(iter, &((PRAddrInfoFB *) base)->hostent, port, re
sult); | |
| 2124 if (iter < 0) | |
| 2125 iter = 0; | |
| 2126 return (void *) iter; | |
| 2127 #endif | |
| 2128 } | |
| 2129 | |
| 2130 PR_IMPLEMENT(const char *) PR_GetCanonNameFromAddrInfo(const PRAddrInfo *ai) | |
| 2131 { | |
| 2132 #if defined(_PR_HAVE_GETADDRINFO) | |
| 2133 #if defined(_PR_INET6_PROBE) | |
| 2134 if (!_pr_ipv6_is_present()) { | |
| 2135 const PRAddrInfoFB *fb = (const PRAddrInfoFB *) ai; | |
| 2136 return fb->has_cname ? fb->hostent.h_name : NULL; | |
| 2137 } | |
| 2138 #endif | |
| 2139 return ((const PRADDRINFO *) ai)->ai_canonname; | |
| 2140 #else | |
| 2141 const PRAddrInfoFB *fb = (const PRAddrInfoFB *) ai; | |
| 2142 return fb->has_cname ? fb->hostent.h_name : NULL; | |
| 2143 #endif | |
| 2144 } | |
| 2145 | |
| 2146 #if defined(_PR_HAVE_GETADDRINFO) | |
| 2147 static PRStatus pr_StringToNetAddrGAI(const char *string, PRNetAddr *addr) | |
| 2148 { | |
| 2149 PRADDRINFO *res, hints; | |
| 2150 int rv; /* 0 for success, or the error code EAI_xxx */ | |
| 2151 PRNetAddr laddr; | |
| 2152 PRStatus status = PR_SUCCESS; | |
| 2153 | |
| 2154 memset(&hints, 0, sizeof(hints)); | |
| 2155 hints.ai_flags = AI_NUMERICHOST; | |
| 2156 hints.ai_family = AF_UNSPEC; | |
| 2157 hints.ai_socktype = SOCK_STREAM; | |
| 2158 | |
| 2159 rv = GETADDRINFO(string, NULL, &hints, &res); | |
| 2160 if (rv != 0) | |
| 2161 { | |
| 2162 PR_SetError(PR_INVALID_ARGUMENT_ERROR, rv); | |
| 2163 return PR_FAILURE; | |
| 2164 } | |
| 2165 | |
| 2166 /* pick up the first addr */ | |
| 2167 memcpy(&laddr, res->ai_addr, res->ai_addrlen); | |
| 2168 if (AF_INET6 == res->ai_addr->sa_family) | |
| 2169 { | |
| 2170 addr->ipv6.family = PR_AF_INET6; | |
| 2171 addr->ipv6.ip = laddr.ipv6.ip; | |
| 2172 addr->ipv6.scope_id = laddr.ipv6.scope_id; | |
| 2173 } | |
| 2174 else if (AF_INET == res->ai_addr->sa_family) | |
| 2175 { | |
| 2176 addr->inet.family = PR_AF_INET; | |
| 2177 addr->inet.ip = laddr.inet.ip; | |
| 2178 } | |
| 2179 else | |
| 2180 { | |
| 2181 PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0); | |
| 2182 status = PR_FAILURE; | |
| 2183 } | |
| 2184 | |
| 2185 FREEADDRINFO(res); | |
| 2186 return status; | |
| 2187 } | |
| 2188 #endif /* _PR_HAVE_GETADDRINFO */ | |
| 2189 | |
| 2190 static PRStatus pr_StringToNetAddrFB(const char *string, PRNetAddr *addr) | |
| 2191 { | |
| 2192 PRIntn rv; | |
| 2193 | |
| 2194 rv = pr_inet_aton(string, &addr->inet.ip); | |
| 2195 if (1 == rv) | |
| 2196 { | |
| 2197 addr->raw.family = AF_INET; | |
| 2198 return PR_SUCCESS; | |
| 2199 } | |
| 2200 | |
| 2201 PR_ASSERT(0 == rv); | |
| 2202 /* clean up after the failed call */ | |
| 2203 memset(&addr->inet.ip, 0, sizeof(addr->inet.ip)); | |
| 2204 | |
| 2205 rv = StringToV6Addr(string, &addr->ipv6.ip); | |
| 2206 if (1 == rv) | |
| 2207 { | |
| 2208 addr->raw.family = PR_AF_INET6; | |
| 2209 return PR_SUCCESS; | |
| 2210 } | |
| 2211 | |
| 2212 PR_ASSERT(0 == rv); | |
| 2213 PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0); | |
| 2214 return PR_FAILURE; | |
| 2215 } | |
| 2216 | |
| 2217 PR_IMPLEMENT(PRStatus) PR_StringToNetAddr(const char *string, PRNetAddr *addr) | |
| 2218 { | |
| 2219 if (!_pr_initialized) _PR_ImplicitInitialization(); | |
| 2220 | |
| 2221 if (!addr || !string || !*string) | |
| 2222 { | |
| 2223 PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0); | |
| 2224 return PR_FAILURE; | |
| 2225 } | |
| 2226 | |
| 2227 #if !defined(_PR_HAVE_GETADDRINFO) | |
| 2228 return pr_StringToNetAddrFB(string, addr); | |
| 2229 #else | |
| 2230 /* | |
| 2231 * getaddrinfo with AI_NUMERICHOST is much slower than pr_inet_aton on some | |
| 2232 * platforms, such as Mac OS X (bug 404399), Linux glibc 2.10 (bug 344809), | |
| 2233 * and most likely others. So we only use it to convert literal IP addresses | |
| 2234 * that contain IPv6 scope IDs, which pr_inet_aton cannot convert. | |
| 2235 */ | |
| 2236 if (!strchr(string, '%')) | |
| 2237 return pr_StringToNetAddrFB(string, addr); | |
| 2238 | |
| 2239 #if defined(_PR_INET6_PROBE) | |
| 2240 if (!_pr_ipv6_is_present()) | |
| 2241 return pr_StringToNetAddrFB(string, addr); | |
| 2242 #endif | |
| 2243 | |
| 2244 return pr_StringToNetAddrGAI(string, addr); | |
| 2245 #endif | |
| 2246 } | |
| 2247 | |
| 2248 #if defined(_PR_HAVE_GETADDRINFO) | |
| 2249 static PRStatus pr_NetAddrToStringGNI( | |
| 2250 const PRNetAddr *addr, char *string, PRUint32 size) | |
| 2251 { | |
| 2252 int addrlen; | |
| 2253 const PRNetAddr *addrp = addr; | |
| 2254 #if defined(_PR_HAVE_SOCKADDR_LEN) || defined(_PR_INET6) | |
| 2255 PRUint16 md_af = addr->raw.family; | |
| 2256 PRNetAddr addrcopy; | |
| 2257 #endif | |
| 2258 int rv; /* 0 for success, or the error code EAI_xxx */ | |
| 2259 | |
| 2260 #ifdef _PR_INET6 | |
| 2261 if (addr->raw.family == PR_AF_INET6) | |
| 2262 { | |
| 2263 md_af = AF_INET6; | |
| 2264 #ifndef _PR_HAVE_SOCKADDR_LEN | |
| 2265 addrcopy = *addr; | |
| 2266 addrcopy.raw.family = md_af; | |
| 2267 addrp = &addrcopy; | |
| 2268 #endif | |
| 2269 } | |
| 2270 #endif | |
| 2271 | |
| 2272 addrlen = PR_NETADDR_SIZE(addr); | |
| 2273 #ifdef _PR_HAVE_SOCKADDR_LEN | |
| 2274 addrcopy = *addr; | |
| 2275 ((struct sockaddr*)&addrcopy)->sa_len = addrlen; | |
| 2276 ((struct sockaddr*)&addrcopy)->sa_family = md_af; | |
| 2277 addrp = &addrcopy; | |
| 2278 #endif | |
| 2279 rv = GETNAMEINFO((const struct sockaddr *)addrp, addrlen, | |
| 2280 string, size, NULL, 0, NI_NUMERICHOST); | |
| 2281 if (rv != 0) | |
| 2282 { | |
| 2283 PR_SetError(PR_INVALID_ARGUMENT_ERROR, rv); | |
| 2284 return PR_FAILURE; | |
| 2285 } | |
| 2286 return PR_SUCCESS; | |
| 2287 } | |
| 2288 #endif /* _PR_HAVE_GETADDRINFO */ | |
| 2289 | |
| 2290 #if !defined(_PR_HAVE_GETADDRINFO) || defined(_PR_INET6_PROBE) | |
| 2291 static PRStatus pr_NetAddrToStringFB( | |
| 2292 const PRNetAddr *addr, char *string, PRUint32 size) | |
| 2293 { | |
| 2294 if (PR_AF_INET6 == addr->raw.family) | |
| 2295 { | |
| 2296 #if defined(_PR_HAVE_INET_NTOP) | |
| 2297 if (NULL == inet_ntop(AF_INET6, &addr->ipv6.ip, string, size)) | |
| 2298 #else | |
| 2299 if (NULL == V6AddrToString(&addr->ipv6.ip, string, size)) | |
| 2300 #endif | |
| 2301 { | |
| 2302 /* the size of the result buffer is inadequate */ | |
| 2303 PR_SetError(PR_BUFFER_OVERFLOW_ERROR, 0); | |
| 2304 return PR_FAILURE; | |
| 2305 } | |
| 2306 } | |
| 2307 else | |
| 2308 { | |
| 2309 if (size < 16) goto failed; | |
| 2310 if (AF_INET != addr->raw.family) goto failed; | |
| 2311 else | |
| 2312 { | |
| 2313 unsigned char *byte = (unsigned char*)&addr->inet.ip; | |
| 2314 PR_snprintf(string, size, "%u.%u.%u.%u", | |
| 2315 byte[0], byte[1], byte[2], byte[3]); | |
| 2316 } | |
| 2317 } | |
| 2318 | |
| 2319 return PR_SUCCESS; | |
| 2320 | |
| 2321 failed: | |
| 2322 PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0); | |
| 2323 return PR_FAILURE; | |
| 2324 | |
| 2325 } /* pr_NetAddrToStringFB */ | |
| 2326 #endif /* !_PR_HAVE_GETADDRINFO || _PR_INET6_PROBE */ | |
| 2327 | |
| 2328 PR_IMPLEMENT(PRStatus) PR_NetAddrToString( | |
| 2329 const PRNetAddr *addr, char *string, PRUint32 size) | |
| 2330 { | |
| 2331 if (!_pr_initialized) _PR_ImplicitInitialization(); | |
| 2332 | |
| 2333 #if !defined(_PR_HAVE_GETADDRINFO) | |
| 2334 return pr_NetAddrToStringFB(addr, string, size); | |
| 2335 #else | |
| 2336 #if defined(_PR_INET6_PROBE) | |
| 2337 if (!_pr_ipv6_is_present()) | |
| 2338 return pr_NetAddrToStringFB(addr, string, size); | |
| 2339 #endif | |
| 2340 return pr_NetAddrToStringGNI(addr, string, size); | |
| 2341 #endif | |
| 2342 } /* PR_NetAddrToString */ | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2078763002:
Delete bundled copy of NSS and replace with README. (Closed)
Base URL: https://chromium.googlesource.com/chromium/deps/nss@master