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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 && !defined(ANDROID)) | |
| 68 #define _PR_HAVE_GETPROTO_R | |
| 69 #define _PR_HAVE_GETPROTO_R_POINTER | |
| 70 #endif | |
| 71 | |
| 72 #if defined(OSF1) \ | |
| 73 || defined(AIX4_3_PLUS) || (defined(AIX) && defined(_THREAD_SAFE)) \ | |
| 74 || (defined(HPUX10_10) && defined(_REENTRANT)) \ | |
| 75 || (defined(HPUX10_20) && defined(_REENTRANT)) \ | |
| 76 || defined(OPENBSD) | |
| 77 #define _PR_HAVE_GETPROTO_R | |
| 78 #define _PR_HAVE_GETPROTO_R_INT | |
| 79 #endif | |
| 80 | |
| 81 #if __FreeBSD_version >= 602000 | |
| 82 #define _PR_HAVE_GETPROTO_R | |
| 83 #define _PR_HAVE_5_ARG_GETPROTO_R | |
| 84 #endif | |
| 85 | |
| 86 /* BeOS has glibc but not the glibc-style getprotobyxxx_r functions. */ | |
| 87 #if (defined(__GLIBC__) && __GLIBC__ >= 2 && !defined(XP_BEOS)) | |
| 88 #define _PR_HAVE_GETPROTO_R | |
| 89 #define _PR_HAVE_5_ARG_GETPROTO_R | |
| 90 #endif | |
| 91 | |
| 92 #if !defined(_PR_HAVE_GETPROTO_R) | |
| 93 PRLock* _getproto_lock = NULL; | |
| 94 #endif | |
| 95 | |
| 96 #if defined(_PR_INET6_PROBE) | |
| 97 extern PRBool _pr_ipv6_is_present(void); | |
| 98 #endif | |
| 99 | |
| 100 #define _PR_IN6_IS_ADDR_UNSPECIFIED(a) \ | |
| 101 (((a)->pr_s6_addr32[0] == 0) && \ | |
| 102 ((a)->pr_s6_addr32[1] == 0) && \ | |
| 103 ((a)->pr_s6_addr32[2] == 0) && \ | |
| 104 ((a)->pr_s6_addr32[3] == 0)) | |
| 105 | |
| 106 #define _PR_IN6_IS_ADDR_LOOPBACK(a) \ | |
| 107 (((a)->pr_s6_addr32[0] == 0) && \ | |
| 108 ((a)->pr_s6_addr32[1] == 0) && \ | |
| 109 ((a)->pr_s6_addr32[2] == 0) && \ | |
| 110 ((a)->pr_s6_addr[12] == 0) && \ | |
| 111 ((a)->pr_s6_addr[13] == 0) && \ | |
| 112 ((a)->pr_s6_addr[14] == 0) && \ | |
| 113 ((a)->pr_s6_addr[15] == 0x1U)) | |
| 114 | |
| 115 const PRIPv6Addr _pr_in6addr_any = {{{ 0, 0, 0, 0, | |
| 116
0, 0, 0, 0, | |
| 117
0, 0, 0, 0, | |
| 118
0, 0, 0, 0 }}}; | |
| 119 | |
| 120 const PRIPv6Addr _pr_in6addr_loopback = {{{ 0, 0, 0, 0, | |
| 121
0, 0, 0, 0, | |
| 122
0, 0, 0, 0, | |
| 123
0, 0, 0, 0x1U }}}; | |
| 124 /* | |
| 125 * The values at bytes 10 and 11 are compared using pointers to | |
| 126 * 8-bit fields, and not 32-bit fields, to make the comparison work on | |
| 127 * both big-endian and little-endian systems | |
| 128 */ | |
| 129 | |
| 130 #define _PR_IN6_IS_ADDR_V4MAPPED(a) \ | |
| 131 (((a)->pr_s6_addr32[0] == 0) && \ | |
| 132 ((a)->pr_s6_addr32[1] == 0) && \ | |
| 133 ((a)->pr_s6_addr[8] == 0) && \ | |
| 134 ((a)->pr_s6_addr[9] == 0) && \ | |
| 135 ((a)->pr_s6_addr[10] == 0xff) && \ | |
| 136 ((a)->pr_s6_addr[11] == 0xff)) | |
| 137 | |
| 138 #define _PR_IN6_IS_ADDR_V4COMPAT(a) \ | |
| 139 (((a)->pr_s6_addr32[0] == 0) && \ | |
| 140 ((a)->pr_s6_addr32[1] == 0) && \ | |
| 141 ((a)->pr_s6_addr32[2] == 0)) | |
| 142 | |
| 143 #define _PR_IN6_V4MAPPED_TO_IPADDR(a) ((a)->pr_s6_addr32[3]) | |
| 144 | |
| 145 #if defined(_PR_INET6) && defined(_PR_HAVE_GETHOSTBYNAME2) | |
| 146 | |
| 147 /* | |
| 148 * The _pr_QueryNetIfs() function finds out if the system has | |
| 149 * IPv4 or IPv6 source addresses configured and sets _pr_have_inet_if | |
| 150 * and _pr_have_inet6_if accordingly. | |
| 151 * | |
| 152 * We have an implementation using SIOCGIFCONF ioctl and a | |
| 153 * default implementation that simply sets _pr_have_inet_if | |
| 154 * and _pr_have_inet6_if to true. A better implementation | |
| 155 * would be to use the routing sockets (see Chapter 17 of | |
| 156 * W. Richard Stevens' Unix Network Programming, Vol. 1, 2nd. Ed.) | |
| 157 */ | |
| 158 | |
| 159 static PRLock *_pr_query_ifs_lock = NULL; | |
| 160 static PRBool _pr_have_inet_if = PR_FALSE; | |
| 161 static PRBool _pr_have_inet6_if = PR_FALSE; | |
| 162 | |
| 163 #undef DEBUG_QUERY_IFS | |
| 164 | |
| 165 #if defined(AIX) \ | |
| 166 || (defined(DARWIN) && (!defined(HAVE_GETIFADDRS) \ | |
| 167 || (defined(XP_MACOSX) && (!defined(MAC_OS_X_VERSION_10_2) || \ | |
| 168 MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_2)))) | |
| 169 | |
| 170 /* | |
| 171 * Use SIOCGIFCONF ioctl on platforms that don't have routing | |
| 172 * sockets. Warning: whether SIOCGIFCONF ioctl returns AF_INET6 | |
| 173 * network interfaces is not portable. | |
| 174 * | |
| 175 * The _pr_QueryNetIfs() function is derived from the code in | |
| 176 * src/lib/libc/net/getifaddrs.c in BSD Unix and the code in | |
| 177 * Section 16.6 of W. Richard Stevens' Unix Network Programming, | |
| 178 * Vol. 1, 2nd. Ed. | |
| 179 */ | |
| 180 | |
| 181 #include <sys/ioctl.h> | |
| 182 #include <sys/socket.h> | |
| 183 #include <netinet/in.h> | |
| 184 #include <net/if.h> | |
| 185 | |
| 186 #ifdef DEBUG_QUERY_IFS | |
| 187 static void | |
| 188 _pr_PrintIfreq(struct ifreq *ifr) | |
| 189 { | |
| 190 PRNetAddr addr; | |
| 191 struct sockaddr *sa; | |
| 192 const char* family; | |
| 193 char addrstr[64]; | |
| 194 | |
| 195 sa = &ifr->ifr_addr; | |
| 196 if (sa->sa_family == AF_INET) { | |
| 197 struct sockaddr_in *sin = (struct sockaddr_in *)sa; | |
| 198 family = "inet"; | |
| 199 memcpy(&addr.inet.ip, &sin->sin_addr, sizeof(sin->sin_addr)); | |
| 200 } else if (sa->sa_family == AF_INET6) { | |
| 201 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa; | |
| 202 family = "inet6"; | |
| 203 memcpy(&addr.ipv6.ip, &sin6->sin6_addr, sizeof(sin6->sin6_addr)); | |
| 204 } else { | |
| 205 return; /* skip if not AF_INET or AF_INET6 */ | |
| 206 } | |
| 207 addr.raw.family = sa->sa_family; | |
| 208 PR_NetAddrToString(&addr, addrstr, sizeof(addrstr)); | |
| 209 printf("%s: %s %s\n", ifr->ifr_name, family, addrstr); | |
| 210 } | |
| 211 #endif | |
| 212 | |
| 213 static void | |
| 214 _pr_QueryNetIfs(void) | |
| 215 { | |
| 216 int sock; | |
| 217 int rv; | |
| 218 struct ifconf ifc; | |
| 219 struct ifreq *ifr; | |
| 220 struct ifreq *lifr; | |
| 221 PRUint32 len, lastlen; | |
| 222 char *buf; | |
| 223 | |
| 224 if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == -1) { | |
| 225 return; | |
| 226 } | |
| 227 | |
| 228 /* Issue SIOCGIFCONF request in a loop. */ | |
| 229 lastlen = 0; | |
| 230 len = 100 * sizeof(struct ifreq); /* initial buffer size guess */ | |
| 231 for (;;) { | |
| 232 buf = (char *)PR_Malloc(len); | |
| 233 if (NULL == buf) { | |
| 234 close(sock); | |
| 235 return; | |
| 236 } | |
| 237 ifc.ifc_buf = buf; | |
| 238 ifc.ifc_len = len; | |
| 239 rv = ioctl(sock, SIOCGIFCONF, &ifc); | |
| 240 if (rv < 0) { | |
| 241 if (errno != EINVAL || lastlen != 0) { | |
| 242 close(sock); | |
| 243 PR_Free(buf); | |
| 244 return; | |
| 245 } | |
| 246 } else { | |
| 247 if (ifc.ifc_len == lastlen) | |
| 248 break; /* success, len has not changed */ | |
| 249 lastlen = ifc.ifc_len; | |
| 250 } | |
| 251 len += 10 * sizeof(struct ifreq); /* increment */ | |
| 252 PR_Free(buf); | |
| 253 } | |
| 254 close(sock); | |
| 255 | |
| 256 ifr = ifc.ifc_req; | |
| 257 lifr = (struct ifreq *)&ifc.ifc_buf[ifc.ifc_len]; | |
| 258 | |
| 259 while (ifr < lifr) { | |
| 260 struct sockaddr *sa; | |
| 261 int sa_len; | |
| 262 | |
| 263 #ifdef DEBUG_QUERY_IFS | |
| 264 _pr_PrintIfreq(ifr); | |
| 265 #endif | |
| 266 sa = &ifr->ifr_addr; | |
| 267 if (sa->sa_family == AF_INET) { | |
| 268 struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
| 269 if (sin->sin_addr.s_addr != htonl(INADDR_LOOPBACK)) { | |
| 270 _pr_have_inet_if = PR_TRUE; | |
| 271 } | |
| 272 } else if (sa->sa_family == AF_INET6) { | |
| 273 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
| 274 if (!IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr) | |
| 275 && !IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) { | |
| 276 _pr_have_inet6_if = PR_TRUE; | |
| 277 } | |
| 278 } | |
| 279 | |
| 280 #ifdef _PR_HAVE_SOCKADDR_LEN | |
| 281 sa_len = PR_MAX(sa->sa_len, sizeof(struct sockaddr)); | |
| 282 #else | |
| 283 switch (sa->sa_family) { | |
| 284 #ifdef AF_LINK | |
| 285 case AF_LINK: | |
| 286 sa_len = sizeof(struct sockaddr_dl); | |
| 287 break; | |
| 288 #endif | |
| 289 case AF_INET6: | |
| 290 sa_len = sizeof(struct sockaddr_in6); | |
| 291 break; | |
| 292 default: | |
| 293 sa_len = sizeof(struct sockaddr); | |
| 294 break; | |
| 295 } | |
| 296 #endif | |
| 297 ifr = (struct ifreq *)(((char *)sa) + sa_len); | |
| 298 } | |
| 299 PR_Free(buf); | |
| 300 } | |
| 301 | |
| 302 #elif (defined(DARWIN) && defined(HAVE_GETIFADDRS)) || defined(FREEBSD) \ | |
| 303 || defined(NETBSD) || defined(OPENBSD) | |
| 304 | |
| 305 /* | |
| 306 * Use the BSD getifaddrs function. | |
| 307 */ | |
| 308 | |
| 309 #include <sys/types.h> | |
| 310 #include <sys/socket.h> | |
| 311 #include <ifaddrs.h> | |
| 312 #include <netinet/in.h> | |
| 313 | |
| 314 #ifdef DEBUG_QUERY_IFS | |
| 315 static void | |
| 316 _pr_PrintIfaddrs(struct ifaddrs *ifa) | |
| 317 { | |
| 318 struct sockaddr *sa; | |
| 319 const char* family; | |
| 320 void *addrp; | |
| 321 char addrstr[64]; | |
| 322 | |
| 323 sa = ifa->ifa_addr; | |
| 324 if (sa->sa_family == AF_INET) { | |
| 325 struct sockaddr_in *sin = (struct sockaddr_in *)sa; | |
| 326 family = "inet"; | |
| 327 addrp = &sin->sin_addr; | |
| 328 } else if (sa->sa_family == AF_INET6) { | |
| 329 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa; | |
| 330 family = "inet6"; | |
| 331 addrp = &sin6->sin6_addr; | |
| 332 } else { | |
| 333 return; /* skip if not AF_INET or AF_INET6 */ | |
| 334 } | |
| 335 inet_ntop(sa->sa_family, addrp, addrstr, sizeof(addrstr)); | |
| 336 printf("%s: %s %s\n", ifa->ifa_name, family, addrstr); | |
| 337 } | |
| 338 #endif | |
| 339 | |
| 340 static void | |
| 341 _pr_QueryNetIfs(void) | |
| 342 { | |
| 343 struct ifaddrs *ifp; | |
| 344 struct ifaddrs *ifa; | |
| 345 | |
| 346 if (getifaddrs(&ifp) == -1) { | |
| 347 return; | |
| 348 } | |
| 349 for (ifa = ifp; ifa; ifa = ifa->ifa_next) { | |
| 350 struct sockaddr *sa; | |
| 351 | |
| 352 #ifdef DEBUG_QUERY_IFS | |
| 353 _pr_PrintIfaddrs(ifa); | |
| 354 #endif | |
| 355 sa = ifa->ifa_addr; | |
| 356 if (sa->sa_family == AF_INET) { | |
| 357 struct sockaddr_in *sin = (struct sockaddr_in *) sa; | |
| 358 if (sin->sin_addr.s_addr != htonl(INADDR_LOOPBACK)) { | |
| 359 _pr_have_inet_if = 1; | |
| 360 } | |
| 361 } else if (sa->sa_family == AF_INET6) { | |
| 362 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) sa; | |
| 363 if (!IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr) | |
| 364 && !IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) { | |
| 365 _pr_have_inet6_if = 1; | |
| 366 } | |
| 367 } | |
| 368 } | |
| 369 freeifaddrs(ifp); | |
| 370 } | |
| 371 | |
| 372 #else /* default */ | |
| 373 | |
| 374 /* | |
| 375 * Emulate the code in NSPR 4.2 or older. PR_GetIPNodeByName behaves | |
| 376 * as if the system had both IPv4 and IPv6 source addresses configured. | |
| 377 */ | |
| 378 static void | |
| 379 _pr_QueryNetIfs(void) | |
| 380 { | |
| 381 _pr_have_inet_if = PR_TRUE; | |
| 382 _pr_have_inet6_if = PR_TRUE; | |
| 383 } | |
| 384 | |
| 385 #endif | |
| 386 | |
| 387 #endif /* _PR_INET6 && _PR_HAVE_GETHOSTBYNAME2 */ | |
| 388 | |
| 389 void _PR_InitNet(void) | |
| 390 { | |
| 391 #if defined(XP_UNIX) | |
| 392 #ifdef HAVE_NETCONFIG | |
| 393 /* | |
| 394 * This one-liner prevents the endless re-open's and re-read's of | |
| 395 * /etc/netconfig on EACH and EVERY call to accept(), connect(), etc. | |
| 396 */ | |
| 397 (void)setnetconfig(); | |
| 398 #endif | |
| 399 #endif | |
| 400 #if !defined(_PR_NO_DNS_LOCK) | |
| 401 _pr_dnsLock = PR_NewLock(); | |
| 402 #endif | |
| 403 #if !defined(_PR_HAVE_GETPROTO_R) | |
| 404 _getproto_lock = PR_NewLock(); | |
| 405 #endif | |
| 406 #if defined(_PR_INET6) && defined(_PR_HAVE_GETHOSTBYNAME2) | |
| 407 _pr_query_ifs_lock = PR_NewLock(); | |
| 408 #endif | |
| 409 } | |
| 410 | |
| 411 void _PR_CleanupNet(void) | |
| 412 { | |
| 413 #if !defined(_PR_NO_DNS_LOCK) | |
| 414 if (_pr_dnsLock) { | |
| 415 PR_DestroyLock(_pr_dnsLock); | |
| 416 _pr_dnsLock = NULL; | |
| 417 } | |
| 418 #endif | |
| 419 #if !defined(_PR_HAVE_GETPROTO_R) | |
| 420 if (_getproto_lock) { | |
| 421 PR_DestroyLock(_getproto_lock); | |
| 422 _getproto_lock = NULL; | |
| 423 } | |
| 424 #endif | |
| 425 #if defined(_PR_INET6) && defined(_PR_HAVE_GETHOSTBYNAME2) | |
| 426 if (_pr_query_ifs_lock) { | |
| 427 PR_DestroyLock(_pr_query_ifs_lock); | |
| 428 _pr_query_ifs_lock = NULL; | |
| 429 } | |
| 430 #endif | |
| 431 } | |
| 432 | |
| 433 /* | |
| 434 ** Allocate space from the buffer, aligning it to "align" before doing | |
| 435 ** the allocation. "align" must be a power of 2. | |
| 436 */ | |
| 437 static char *Alloc(PRIntn amount, char **bufp, PRIntn *buflenp, PRIntn align) | |
| 438 { | |
| 439 char *buf = *bufp; | |
| 440 PRIntn buflen = *buflenp; | |
| 441 | |
| 442 if (align && ((long)buf & (align - 1))) { | |
| 443 PRIntn skip = align - ((ptrdiff_t)buf & (align - 1)); | |
| 444 if (buflen < skip) { | |
| 445 return 0; | |
| 446 } | |
| 447 buf += skip; | |
| 448 buflen -= skip; | |
| 449 } | |
| 450 if (buflen < amount) { | |
| 451 return 0; | |
| 452 } | |
| 453 *bufp = buf + amount; | |
| 454 *buflenp = buflen - amount; | |
| 455 return buf; | |
| 456 } | |
| 457 | |
| 458 typedef enum _PRIPAddrConversion { | |
| 459 _PRIPAddrNoConversion, | |
| 460 _PRIPAddrIPv4Mapped, | |
| 461 _PRIPAddrIPv4Compat | |
| 462 } _PRIPAddrConversion; | |
| 463 | |
| 464 /* | |
| 465 ** Convert an IPv4 address (v4) to an IPv4-mapped IPv6 address (v6). | |
| 466 */ | |
| 467 static void MakeIPv4MappedAddr(const char *v4, char *v6) | |
| 468 { | |
| 469 memset(v6, 0, 10); | |
| 470 memset(v6 + 10, 0xff, 2); | |
| 471 memcpy(v6 + 12, v4, 4); | |
| 472 } | |
| 473 | |
| 474 /* | |
| 475 ** Convert an IPv4 address (v4) to an IPv4-compatible IPv6 address (v6). | |
| 476 */ | |
| 477 static void MakeIPv4CompatAddr(const char *v4, char *v6) | |
| 478 { | |
| 479 memset(v6, 0, 12); | |
| 480 memcpy(v6 + 12, v4, 4); | |
| 481 } | |
| 482 | |
| 483 /* | |
| 484 ** Copy a hostent, and all of the memory that it refers to into | |
| 485 ** (hopefully) stacked buffers. | |
| 486 */ | |
| 487 static PRStatus CopyHostent( | |
| 488 struct hostent *from, | |
| 489 char **buf, | |
| 490 PRIntn *bufsize, | |
| 491 _PRIPAddrConversion conversion, | |
| 492 PRHostEnt *to) | |
| 493 { | |
| 494 PRIntn len, na; | |
| 495 char **ap; | |
| 496 | |
| 497 if (conversion != _PRIPAddrNoConversion | |
| 498 && from->h_addrtype == AF_INET) { | |
| 499 PR_ASSERT(from->h_length == 4); | |
| 500 to->h_addrtype = PR_AF_INET6; | |
| 501 to->h_length = 16; | |
| 502 } else { | |
| 503 #if defined(_PR_INET6) || defined(_PR_INET6_PROBE) | |
| 504 if (AF_INET6 == from->h_addrtype) | |
| 505 to->h_addrtype = PR_AF_INET6; | |
| 506 else | |
| 507 #endif | |
| 508 to->h_addrtype = from->h_addrtype; | |
| 509 to->h_length = from->h_length; | |
| 510 } | |
| 511 | |
| 512 /* Copy the official name */ | |
| 513 if (!from->h_name) return PR_FAILURE; | |
| 514 len = strlen(from->h_name) + 1; | |
| 515 to->h_name = Alloc(len, buf, bufsize, 0); | |
| 516 if (!to->h_name) return PR_FAILURE; | |
| 517 memcpy(to->h_name, from->h_name, len); | |
| 518 | |
| 519 /* Count the aliases, then allocate storage for the pointers */ | |
| 520 if (!from->h_aliases) { | |
| 521 na = 1; | |
| 522 } else { | |
| 523 for (na = 1, ap = from->h_aliases; *ap != 0; na++, ap++){;} /* n
othing to execute */ | |
| 524 } | |
| 525 to->h_aliases = (char**)Alloc( | |
| 526 na * sizeof(char*), buf, bufsize, sizeof(char**)); | |
| 527 if (!to->h_aliases) return PR_FAILURE; | |
| 528 | |
| 529 /* Copy the aliases, one at a time */ | |
| 530 if (!from->h_aliases) { | |
| 531 to->h_aliases[0] = 0; | |
| 532 } else { | |
| 533 for (na = 0, ap = from->h_aliases; *ap != 0; na++, ap++) { | |
| 534 len = strlen(*ap) + 1; | |
| 535 to->h_aliases[na] = Alloc(len, buf, bufsize, 0); | |
| 536 if (!to->h_aliases[na]) return PR_FAILURE; | |
| 537 memcpy(to->h_aliases[na], *ap, len); | |
| 538 } | |
| 539 to->h_aliases[na] = 0; | |
| 540 } | |
| 541 | |
| 542 /* Count the addresses, then allocate storage for the pointers */ | |
| 543 for (na = 1, ap = from->h_addr_list; *ap != 0; na++, ap++){;} /* nothing
to execute */ | |
| 544 to->h_addr_list = (char**)Alloc( | |
| 545 na * sizeof(char*), buf, bufsize, sizeof(char**)); | |
| 546 if (!to->h_addr_list) return PR_FAILURE; | |
| 547 | |
| 548 /* Copy the addresses, one at a time */ | |
| 549 for (na = 0, ap = from->h_addr_list; *ap != 0; na++, ap++) { | |
| 550 to->h_addr_list[na] = Alloc(to->h_length, buf, bufsize, 0); | |
| 551 if (!to->h_addr_list[na]) return PR_FAILURE; | |
| 552 if (conversion != _PRIPAddrNoConversion | |
| 553 && from->h_addrtype == AF_INET) { | |
| 554 if (conversion == _PRIPAddrIPv4Mapped) { | |
| 555 MakeIPv4MappedAddr(*ap, to->h_addr_list[na]); | |
| 556 } else { | |
| 557 PR_ASSERT(conversion == _PRIPAddrIPv4Compat); | |
| 558 MakeIPv4CompatAddr(*ap, to->h_addr_list[na]); | |
| 559 } | |
| 560 } else { | |
| 561 memcpy(to->h_addr_list[na], *ap, to->h_length); | |
| 562 } | |
| 563 } | |
| 564 to->h_addr_list[na] = 0; | |
| 565 return PR_SUCCESS; | |
| 566 } | |
| 567 | |
| 568 #ifdef SYMBIAN | |
| 569 /* Set p_aliases by hand because Symbian's getprotobyname() returns NULL. */ | |
| 570 static void AssignAliases(struct protoent *Protoent, char** aliases) | |
| 571 { | |
| 572 if (NULL == Protoent->p_aliases) { | |
| 573 if (0 == strcmp(Protoent->p_name, "ip")) | |
| 574 aliases[0] = "IP"; | |
| 575 else if (0 == strcmp(Protoent->p_name, "tcp")) | |
| 576 aliases[0] = "TCP"; | |
| 577 else if (0 == strcmp(Protoent->p_name, "udp")) | |
| 578 aliases[0] = "UDP"; | |
| 579 else | |
| 580 aliases[0] = "UNKNOWN"; | |
| 581 aliases[1] = NULL; | |
| 582 Protoent->p_aliases = aliases; | |
| 583 } | |
| 584 } | |
| 585 #endif | |
| 586 | |
| 587 #if !defined(_PR_HAVE_GETPROTO_R) | |
| 588 /* | |
| 589 ** Copy a protoent, and all of the memory that it refers to into | |
| 590 ** (hopefully) stacked buffers. | |
| 591 */ | |
| 592 static PRStatus CopyProtoent( | |
| 593 struct protoent *from, char *buf, PRIntn bufsize, PRProtoEnt *to) | |
| 594 { | |
| 595 PRIntn len, na; | |
| 596 char **ap; | |
| 597 | |
| 598 /* Do the easy stuff */ | |
| 599 to->p_num = from->p_proto; | |
| 600 | |
| 601 /* Copy the official name */ | |
| 602 if (!from->p_name) return PR_FAILURE; | |
| 603 len = strlen(from->p_name) + 1; | |
| 604 to->p_name = Alloc(len, &buf, &bufsize, 0); | |
| 605 if (!to->p_name) return PR_FAILURE; | |
| 606 memcpy(to->p_name, from->p_name, len); | |
| 607 | |
| 608 /* Count the aliases, then allocate storage for the pointers */ | |
| 609 for (na = 1, ap = from->p_aliases; *ap != 0; na++, ap++){;} /* nothing t
o execute */ | |
| 610 to->p_aliases = (char**)Alloc( | |
| 611 na * sizeof(char*), &buf, &bufsize, sizeof(char**)); | |
| 612 if (!to->p_aliases) return PR_FAILURE; | |
| 613 | |
| 614 /* Copy the aliases, one at a time */ | |
| 615 for (na = 0, ap = from->p_aliases; *ap != 0; na++, ap++) { | |
| 616 len = strlen(*ap) + 1; | |
| 617 to->p_aliases[na] = Alloc(len, &buf, &bufsize, 0); | |
| 618 if (!to->p_aliases[na]) return PR_FAILURE; | |
| 619 memcpy(to->p_aliases[na], *ap, len); | |
| 620 } | |
| 621 to->p_aliases[na] = 0; | |
| 622 | |
| 623 return PR_SUCCESS; | |
| 624 } | |
| 625 #endif /* !defined(_PR_HAVE_GETPROTO_R) */ | |
| 626 | |
| 627 /* | |
| 628 * ################################################################# | |
| 629 * NOTE: tmphe, tmpbuf, bufsize, h, and h_err are local variables | |
| 630 * or arguments of PR_GetHostByName, PR_GetIPNodeByName, and | |
| 631 * PR_GetHostByAddr. DO NOT CHANGE THE NAMES OF THESE LOCAL | |
| 632 * VARIABLES OR ARGUMENTS. | |
| 633 * ################################################################# | |
| 634 */ | |
| 635 #if defined(_PR_HAVE_GETHOST_R_INT) | |
| 636 | |
| 637 #define GETHOSTBYNAME(name) \ | |
| 638 (gethostbyname_r(name, &tmphe, tmpbuf, bufsize, &h, &h_err), h) | |
| 639 #define GETHOSTBYNAME2(name, af) \ | |
| 640 (gethostbyname2_r(name, af, &tmphe, tmpbuf, bufsize, &h, &h_err), h) | |
| 641 #define GETHOSTBYADDR(addr, addrlen, af) \ | |
| 642 (gethostbyaddr_r(addr, addrlen, af, \ | |
| 643 &tmphe, tmpbuf, bufsize, &h, &h_err), h) | |
| 644 | |
| 645 #elif defined(_PR_HAVE_GETHOST_R_POINTER) | |
| 646 | |
| 647 #define GETHOSTBYNAME(name) \ | |
| 648 gethostbyname_r(name, &tmphe, tmpbuf, bufsize, &h_err) | |
| 649 #define GETHOSTBYNAME2(name, af) \ | |
| 650 gethostbyname2_r(name, af, &tmphe, tmpbuf, bufsize, &h_err) | |
| 651 #define GETHOSTBYADDR(addr, addrlen, af) \ | |
| 652 gethostbyaddr_r(addr, addrlen, af, &tmphe, tmpbuf, bufsize, &h_err) | |
| 653 | |
| 654 #else | |
| 655 | |
| 656 #define GETHOSTBYNAME(name) gethostbyname(name) | |
| 657 #define GETHOSTBYNAME2(name, af) gethostbyname2(name, af) | |
| 658 #define GETHOSTBYADDR(addr, addrlen, af) gethostbyaddr(addr, addrlen, af) | |
| 659 | |
| 660 #endif /* definition of GETHOSTBYXXX */ | |
| 661 | |
| 662 PR_IMPLEMENT(PRStatus) PR_GetHostByName( | |
| 663 const char *name, char *buf, PRIntn bufsize, PRHostEnt *hp) | |
| 664 { | |
| 665 struct hostent *h; | |
| 666 PRStatus rv = PR_FAILURE; | |
| 667 #if defined(_PR_HAVE_GETHOST_R) | |
| 668 char localbuf[PR_NETDB_BUF_SIZE]; | |
| 669 char *tmpbuf; | |
| 670 struct hostent tmphe; | |
| 671 int h_err; | |
| 672 #endif | |
| 673 | |
| 674 if (!_pr_initialized) _PR_ImplicitInitialization(); | |
| 675 | |
| 676 #if defined(_PR_HAVE_GETHOST_R) | |
| 677 tmpbuf = localbuf; | |
| 678 if (bufsize > sizeof(localbuf)) | |
| 679 { | |
| 680 tmpbuf = (char *)PR_Malloc(bufsize); | |
| 681 if (NULL == tmpbuf) | |
| 682 { | |
| 683 PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0); | |
| 684 return rv; | |
| 685 } | |
| 686 } | |
| 687 #endif | |
| 688 | |
| 689 LOCK_DNS(); | |
| 690 | |
| 691 h = GETHOSTBYNAME(name); | |
| 692 | |
| 693 if (NULL == h) | |
| 694 { | |
| 695 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_GETHOST_ERRNO()); | |
| 696 } | |
| 697 else | |
| 698 { | |
| 699 _PRIPAddrConversion conversion = _PRIPAddrNoConversion; | |
| 700 rv = CopyHostent(h, &buf, &bufsize, conversion, hp); | |
| 701 if (PR_SUCCESS != rv) | |
| 702 PR_SetError(PR_INSUFFICIENT_RESOURCES_ERROR, 0); | |
| 703 } | |
| 704 UNLOCK_DNS(); | |
| 705 #if defined(_PR_HAVE_GETHOST_R) | |
| 706 if (tmpbuf != localbuf) | |
| 707 PR_Free(tmpbuf); | |
| 708 #endif | |
| 709 return rv; | |
| 710 } | |
| 711 | |
| 712 #if !defined(_PR_INET6) && \ | |
| 713 defined(_PR_INET6_PROBE) && defined(_PR_HAVE_GETIPNODEBYNAME) | |
| 714 typedef struct hostent * (*_pr_getipnodebyname_t)(const char *, int, | |
| 715
int, int *); | |
| 716 typedef struct hostent * (*_pr_getipnodebyaddr_t)(const void *, size_t, | |
| 717
int, int *); | |
| 718 typedef void (*_pr_freehostent_t)(struct hostent *); | |
| 719 static void * _pr_getipnodebyname_fp; | |
| 720 static void * _pr_getipnodebyaddr_fp; | |
| 721 static void * _pr_freehostent_fp; | |
| 722 | |
| 723 /* | |
| 724 * Look up the addresses of getipnodebyname, getipnodebyaddr, | |
| 725 * and freehostent. | |
| 726 */ | |
| 727 PRStatus | |
| 728 _pr_find_getipnodebyname(void) | |
| 729 { | |
| 730 PRLibrary *lib; | |
| 731 PRStatus rv; | |
| 732 #define GETIPNODEBYNAME "getipnodebyname" | |
| 733 #define GETIPNODEBYADDR "getipnodebyaddr" | |
| 734 #define FREEHOSTENT "freehostent" | |
| 735 | |
| 736 _pr_getipnodebyname_fp = PR_FindSymbolAndLibrary(GETIPNODEBYNAME, &lib); | |
| 737 if (NULL != _pr_getipnodebyname_fp) { | |
| 738 _pr_freehostent_fp = PR_FindSymbol(lib, FREEHOSTENT); | |
| 739 if (NULL != _pr_freehostent_fp) { | |
| 740 _pr_getipnodebyaddr_fp = PR_FindSymbol(lib, GETIPNODEBYADDR); | |
| 741 if (NULL != _pr_getipnodebyaddr_fp) | |
| 742 rv = PR_SUCCESS; | |
| 743 else | |
| 744 rv = PR_FAILURE; | |
| 745 } else | |
| 746 rv = PR_FAILURE; | |
| 747 (void)PR_UnloadLibrary(lib); | |
| 748 } else | |
| 749 rv = PR_FAILURE; | |
| 750 return rv; | |
| 751 } | |
| 752 #endif | |
| 753 | |
| 754 #if defined(_PR_INET6) && defined(_PR_HAVE_GETHOSTBYNAME2) | |
| 755 /* | |
| 756 ** Append the V4 addresses to the end of the list | |
| 757 */ | |
| 758 static PRStatus AppendV4AddrsToHostent( | |
| 759 struct hostent *from, | |
| 760 char **buf, | |
| 761 PRIntn *bufsize, | |
| 762 PRHostEnt *to) | |
| 763 { | |
| 764 PRIntn na, na_old; | |
| 765 char **ap; | |
| 766 char **new_addr_list; | |
| 767 | |
| 768 /* Count the addresses, then grow storage for the pointers */ | |
| 769 for (na_old = 0, ap = to->h_addr_list; *ap != 0; na_old++, ap++) | |
| 770 {;} /* nothing to execute */ | |
| 771 for (na = na_old + 1, ap = from->h_addr_list; *ap != 0; na++, ap++) | |
| 772 {;} /* nothing to execute */ | |
| 773 new_addr_list = (char**)Alloc( | |
| 774 na * sizeof(char*), buf, bufsize, sizeof(char**)); | |
| 775 if (!new_addr_list) return PR_FAILURE; | |
| 776 | |
| 777 /* Copy the V6 addresses, one at a time */ | |
| 778 for (na = 0, ap = to->h_addr_list; *ap != 0; na++, ap++) { | |
| 779 new_addr_list[na] = to->h_addr_list[na]; | |
| 780 } | |
| 781 to->h_addr_list = new_addr_list; | |
| 782 | |
| 783 /* Copy the V4 addresses, one at a time */ | |
| 784 for (ap = from->h_addr_list; *ap != 0; na++, ap++) { | |
| 785 to->h_addr_list[na] = Alloc(to->h_length, buf, bufsize, 0); | |
| 786 if (!to->h_addr_list[na]) return PR_FAILURE; | |
| 787 MakeIPv4MappedAddr(*ap, to->h_addr_list[na]); | |
| 788 } | |
| 789 to->h_addr_list[na] = 0; | |
| 790 return PR_SUCCESS; | |
| 791 } | |
| 792 #endif | |
| 793 | |
| 794 PR_IMPLEMENT(PRStatus) PR_GetIPNodeByName( | |
| 795 const char *name, PRUint16 af, PRIntn flags, | |
| 796 char *buf, PRIntn bufsize, PRHostEnt *hp) | |
| 797 { | |
| 798 struct hostent *h = 0; | |
| 799 PRStatus rv = PR_FAILURE; | |
| 800 #if defined(_PR_HAVE_GETHOST_R) | |
| 801 char localbuf[PR_NETDB_BUF_SIZE]; | |
| 802 char *tmpbuf; | |
| 803 struct hostent tmphe; | |
| 804 int h_err; | |
| 805 #endif | |
| 806 #if defined(_PR_HAVE_GETIPNODEBYNAME) | |
| 807 PRUint16 md_af = af; | |
| 808 int error_num; | |
| 809 int tmp_flags = 0; | |
| 810 #endif | |
| 811 #if defined(_PR_HAVE_GETHOSTBYNAME2) | |
| 812 PRBool did_af_inet = PR_FALSE; | |
| 813 #endif | |
| 814 | |
| 815 if (!_pr_initialized) _PR_ImplicitInitialization(); | |
| 816 | |
| 817 if (af != PR_AF_INET && af != PR_AF_INET6) { | |
| 818 PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0); | |
| 819 return PR_FAILURE; | |
| 820 } | |
| 821 | |
| 822 #if defined(_PR_INET6) && defined(_PR_HAVE_GETHOSTBYNAME2) | |
| 823 PR_Lock(_pr_query_ifs_lock); | |
| 824 /* | |
| 825 * Keep querying the presence of IPv4 and IPv6 interfaces until | |
| 826 * at least one is up. This allows us to detect the local | |
| 827 * machine going from offline to online. | |
| 828 */ | |
| 829 if (!_pr_have_inet_if && !_pr_have_inet6_if) { | |
| 830 _pr_QueryNetIfs(); | |
| 831 #ifdef DEBUG_QUERY_IFS | |
| 832 if (_pr_have_inet_if) | |
| 833 printf("Have IPv4 source address\n"); | |
| 834 if (_pr_have_inet6_if) | |
| 835 printf("Have IPv6 source address\n"); | |
| 836 #endif | |
| 837 } | |
| 838 PR_Unlock(_pr_query_ifs_lock); | |
| 839 #endif | |
| 840 | |
| 841 #if defined(_PR_HAVE_GETIPNODEBYNAME) | |
| 842 if (flags & PR_AI_V4MAPPED) | |
| 843 tmp_flags |= AI_V4MAPPED; | |
| 844 if (flags & PR_AI_ADDRCONFIG) | |
| 845 tmp_flags |= AI_ADDRCONFIG; | |
| 846 if (flags & PR_AI_ALL) | |
| 847 tmp_flags |= AI_ALL; | |
| 848 if (af == PR_AF_INET6) | |
| 849 md_af = AF_INET6; | |
| 850 else | |
| 851 md_af = af; | |
| 852 #endif | |
| 853 | |
| 854 #if defined(_PR_HAVE_GETHOST_R) | |
| 855 tmpbuf = localbuf; | |
| 856 if (bufsize > sizeof(localbuf)) | |
| 857 { | |
| 858 tmpbuf = (char *)PR_Malloc(bufsize); | |
| 859 if (NULL == tmpbuf) | |
| 860 { | |
| 861 PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0); | |
| 862 return rv; | |
| 863 } | |
| 864 } | |
| 865 #endif | |
| 866 | |
| 867 /* Do not need to lock the DNS lock if getipnodebyname() is called */ | |
| 868 #ifdef _PR_INET6 | |
| 869 #ifdef _PR_HAVE_GETHOSTBYNAME2 | |
| 870 LOCK_DNS(); | |
| 871 if (af == PR_AF_INET6) | |
| 872 { | |
| 873 if ((flags & PR_AI_ADDRCONFIG) == 0 || _pr_have_inet6_if) | |
| 874 { | |
| 875 #ifdef _PR_INET6_PROBE | |
| 876 if (_pr_ipv6_is_present()) | |
| 877 #endif | |
| 878 h = GETHOSTBYNAME2(name, AF_INET6); | |
| 879 } | |
| 880 if ((NULL == h) && (flags & PR_AI_V4MAPPED) | |
| 881 && ((flags & PR_AI_ADDRCONFIG) == 0 || _pr_have_inet_if)) | |
| 882 { | |
| 883 did_af_inet = PR_TRUE; | |
| 884 h = GETHOSTBYNAME2(name, AF_INET); | |
| 885 } | |
| 886 } | |
| 887 else | |
| 888 { | |
| 889 if ((flags & PR_AI_ADDRCONFIG) == 0 || _pr_have_inet_if) | |
| 890 { | |
| 891 did_af_inet = PR_TRUE; | |
| 892 h = GETHOSTBYNAME2(name, af); | |
| 893 } | |
| 894 } | |
| 895 #elif defined(_PR_HAVE_GETIPNODEBYNAME) | |
| 896 h = getipnodebyname(name, md_af, tmp_flags, &error_num); | |
| 897 #else | |
| 898 #error "Unknown name-to-address translation function" | |
| 899 #endif /* _PR_HAVE_GETHOSTBYNAME2 */ | |
| 900 #elif defined(_PR_INET6_PROBE) && defined(_PR_HAVE_GETIPNODEBYNAME) | |
| 901 if (_pr_ipv6_is_present()) | |
| 902 { | |
| 903 #ifdef PR_GETIPNODE_NOT_THREADSAFE | |
| 904 LOCK_DNS(); | |
| 905 #endif | |
| 906 h = (*((_pr_getipnodebyname_t)_pr_getipnodebyname_fp))(name, md_af, tmp_
flags, &error_num); | |
| 907 } | |
| 908 else | |
| 909 { | |
| 910 LOCK_DNS(); | |
| 911 h = GETHOSTBYNAME(name); | |
| 912 } | |
| 913 #else /* _PR_INET6 */ | |
| 914 LOCK_DNS(); | |
| 915 h = GETHOSTBYNAME(name); | |
| 916 #endif /* _PR_INET6 */ | |
| 917 | |
| 918 if (NULL == h) | |
| 919 { | |
| 920 #if defined(_PR_INET6) && defined(_PR_HAVE_GETIPNODEBYNAME) | |
| 921 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, error_num); | |
| 922 #elif defined(_PR_INET6_PROBE) && defined(_PR_HAVE_GETIPNODEBYNAME) | |
| 923 if (_pr_ipv6_is_present()) | |
| 924 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, error_num); | |
| 925 else | |
| 926 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_GETHOST_ERRNO()); | |
| 927 #else | |
| 928 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_GETHOST_ERRNO()); | |
| 929 #endif | |
| 930 } | |
| 931 else | |
| 932 { | |
| 933 _PRIPAddrConversion conversion = _PRIPAddrNoConversion; | |
| 934 | |
| 935 if (af == PR_AF_INET6) conversion = _PRIPAddrIPv4Mapped; | |
| 936 rv = CopyHostent(h, &buf, &bufsize, conversion, hp); | |
| 937 if (PR_SUCCESS != rv) | |
| 938 PR_SetError(PR_INSUFFICIENT_RESOURCES_ERROR, 0); | |
| 939 #if defined(_PR_INET6) && defined(_PR_HAVE_GETIPNODEBYNAME) | |
| 940 freehostent(h); | |
| 941 #elif defined(_PR_INET6_PROBE) && defined(_PR_HAVE_GETIPNODEBYNAME) | |
| 942 if (_pr_ipv6_is_present()) | |
| 943 (*((_pr_freehostent_t)_pr_freehostent_fp))(h); | |
| 944 #endif | |
| 945 #if defined(_PR_INET6) && defined(_PR_HAVE_GETHOSTBYNAME2) | |
| 946 if ((PR_SUCCESS == rv) && (flags & PR_AI_V4MAPPED) | |
| 947 && ((flags & PR_AI_ALL) | |
| 948 || ((flags & PR_AI_ADDRCONFIG) && _pr_have_inet_
if)) | |
| 949 && !did_af_inet && (h = GETHOSTBYNAME2(name, AF_
INET)) != 0) { | |
| 950 rv = AppendV4AddrsToHostent(h, &buf, &bufsize, hp); | |
| 951 if (PR_SUCCESS != rv) | |
| 952 PR_SetError(PR_INSUFFICIENT_RESOURCES_ERROR, 0); | |
| 953 } | |
| 954 #endif | |
| 955 } | |
| 956 | |
| 957 /* Must match the convoluted logic above for LOCK_DNS() */ | |
| 958 #ifdef _PR_INET6 | |
| 959 #ifdef _PR_HAVE_GETHOSTBYNAME2 | |
| 960 UNLOCK_DNS(); | |
| 961 #endif /* _PR_HAVE_GETHOSTBYNAME2 */ | |
| 962 #elif defined(_PR_INET6_PROBE) && defined(_PR_HAVE_GETIPNODEBYNAME) | |
| 963 #ifdef PR_GETIPNODE_NOT_THREADSAFE | |
| 964 UNLOCK_DNS(); | |
| 965 #else | |
| 966 if (!_pr_ipv6_is_present()) | |
| 967 UNLOCK_DNS(); | |
| 968 #endif | |
| 969 #else /* _PR_INET6 */ | |
| 970 UNLOCK_DNS(); | |
| 971 #endif /* _PR_INET6 */ | |
| 972 | |
| 973 #if defined(_PR_HAVE_GETHOST_R) | |
| 974 if (tmpbuf != localbuf) | |
| 975 PR_Free(tmpbuf); | |
| 976 #endif | |
| 977 | |
| 978 return rv; | |
| 979 } | |
| 980 | |
| 981 PR_IMPLEMENT(PRStatus) PR_GetHostByAddr( | |
| 982 const PRNetAddr *hostaddr, char *buf, PRIntn bufsize, PRHostEnt *hostentry) | |
| 983 { | |
| 984 struct hostent *h; | |
| 985 PRStatus rv = PR_FAILURE; | |
| 986 const void *addr; | |
| 987 PRUint32 tmp_ip; | |
| 988 int addrlen; | |
| 989 PRInt32 af; | |
| 990 #if defined(_PR_HAVE_GETHOST_R) | |
| 991 char localbuf[PR_NETDB_BUF_SIZE]; | |
| 992 char *tmpbuf; | |
| 993 struct hostent tmphe; | |
| 994 int h_err; | |
| 995 #endif | |
| 996 #if defined(_PR_HAVE_GETIPNODEBYADDR) | |
| 997 int error_num; | |
| 998 #endif | |
| 999 | |
| 1000 if (!_pr_initialized) _PR_ImplicitInitialization(); | |
| 1001 | |
| 1002 if (hostaddr->raw.family == PR_AF_INET6) | |
| 1003 { | |
| 1004 #if defined(_PR_INET6_PROBE) | |
| 1005 af = _pr_ipv6_is_present() ? AF_INET6 : AF_INET; | |
| 1006 #elif defined(_PR_INET6) | |
| 1007 af = AF_INET6; | |
| 1008 #else | |
| 1009 af = AF_INET; | |
| 1010 #endif | |
| 1011 #if defined(_PR_GHBA_DISALLOW_V4MAPPED) | |
| 1012 if (_PR_IN6_IS_ADDR_V4MAPPED(&hostaddr->ipv6.ip)) | |
| 1013 af = AF_INET; | |
| 1014 #endif | |
| 1015 } | |
| 1016 else | |
| 1017 { | |
| 1018 PR_ASSERT(hostaddr->raw.family == AF_INET); | |
| 1019 af = AF_INET; | |
| 1020 } | |
| 1021 if (hostaddr->raw.family == PR_AF_INET6) { | |
| 1022 #if defined(_PR_INET6) || defined(_PR_INET6_PROBE) | |
| 1023 if (af == AF_INET6) { | |
| 1024 addr = &hostaddr->ipv6.ip; | |
| 1025 addrlen = sizeof(hostaddr->ipv6.ip); | |
| 1026 } | |
| 1027 else | |
| 1028 #endif | |
| 1029 { | |
| 1030 PR_ASSERT(af == AF_INET); | |
| 1031 if (!_PR_IN6_IS_ADDR_V4MAPPED(&hostaddr->ipv6.ip)) { | |
| 1032 PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0); | |
| 1033 return rv; | |
| 1034 } | |
| 1035 tmp_ip = _PR_IN6_V4MAPPED_TO_IPADDR((PRIPv6Addr *) | |
| 1036
&hostaddr->ipv6.ip); | |
| 1037 addr = &tmp_ip; | |
| 1038 addrlen = sizeof(tmp_ip); | |
| 1039 } | |
| 1040 } else { | |
| 1041 PR_ASSERT(hostaddr->raw.family == AF_INET); | |
| 1042 PR_ASSERT(af == AF_INET); | |
| 1043 addr = &hostaddr->inet.ip; | |
| 1044 addrlen = sizeof(hostaddr->inet.ip); | |
| 1045 } | |
| 1046 | |
| 1047 #if defined(_PR_HAVE_GETHOST_R) | |
| 1048 tmpbuf = localbuf; | |
| 1049 if (bufsize > sizeof(localbuf)) | |
| 1050 { | |
| 1051 tmpbuf = (char *)PR_Malloc(bufsize); | |
| 1052 if (NULL == tmpbuf) | |
| 1053 { | |
| 1054 PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0); | |
| 1055 return rv; | |
| 1056 } | |
| 1057 } | |
| 1058 #endif | |
| 1059 | |
| 1060 /* Do not need to lock the DNS lock if getipnodebyaddr() is called */ | |
| 1061 #if defined(_PR_HAVE_GETIPNODEBYADDR) && defined(_PR_INET6) | |
| 1062 h = getipnodebyaddr(addr, addrlen, af, &error_num); | |
| 1063 #elif defined(_PR_HAVE_GETIPNODEBYADDR) && defined(_PR_INET6_PROBE) | |
| 1064 if (_pr_ipv6_is_present()) | |
| 1065 { | |
| 1066 #ifdef PR_GETIPNODE_NOT_THREADSAFE | |
| 1067 LOCK_DNS(); | |
| 1068 #endif | |
| 1069 h = (*((_pr_getipnodebyaddr_t)_pr_getipnodebyaddr_fp))(addr, addrlen, | |
| 1070 af, &error_num); | |
| 1071 } | |
| 1072 else | |
| 1073 { | |
| 1074 LOCK_DNS(); | |
| 1075 h = GETHOSTBYADDR(addr, addrlen, af); | |
| 1076 } | |
| 1077 #else /* _PR_HAVE_GETIPNODEBYADDR */ | |
| 1078 LOCK_DNS(); | |
| 1079 h = GETHOSTBYADDR(addr, addrlen, af); | |
| 1080 #endif /* _PR_HAVE_GETIPNODEBYADDR */ | |
| 1081 if (NULL == h) | |
| 1082 { | |
| 1083 #if defined(_PR_INET6) && defined(_PR_HAVE_GETIPNODEBYADDR) | |
| 1084 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, error_num); | |
| 1085 #elif defined(_PR_INET6_PROBE) && defined(_PR_HAVE_GETIPNODEBYADDR) | |
| 1086 if (_pr_ipv6_is_present()) | |
| 1087 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, error_num); | |
| 1088 else | |
| 1089 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_GETHOST_ERRNO()); | |
| 1090 #else | |
| 1091 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_GETHOST_ERRNO()); | |
| 1092 #endif | |
| 1093 } | |
| 1094 else | |
| 1095 { | |
| 1096 _PRIPAddrConversion conversion = _PRIPAddrNoConversion; | |
| 1097 if (hostaddr->raw.family == PR_AF_INET6) { | |
| 1098 if (af == AF_INET) { | |
| 1099 if (_PR_IN6_IS_ADDR_V4MAPPED((PRIPv6Addr*) | |
| 1100
&hostaddr->ipv6.ip)) { | |
| 1101 conversion = _PRIPAddrIPv4Mapped; | |
| 1102 } else if (_PR_IN6_IS_ADDR_V4COMPAT((PRIPv6Addr
*) | |
| 1103
&hostaddr->ipv6.ip)) { | |
| 1104 conversion = _PRIPAddrIPv4Compat; | |
| 1105 } | |
| 1106 } | |
| 1107 } | |
| 1108 rv = CopyHostent(h, &buf, &bufsize, conversion, hostentry); | |
| 1109 if (PR_SUCCESS != rv) { | |
| 1110 PR_SetError(PR_INSUFFICIENT_RESOURCES_ERROR, 0); | |
| 1111 } | |
| 1112 #if defined(_PR_INET6) && defined(_PR_HAVE_GETIPNODEBYADDR) | |
| 1113 freehostent(h); | |
| 1114 #elif defined(_PR_INET6_PROBE) && defined(_PR_HAVE_GETIPNODEBYADDR) | |
| 1115 if (_pr_ipv6_is_present()) | |
| 1116 (*((_pr_freehostent_t)_pr_freehostent_fp))(h); | |
| 1117 #endif | |
| 1118 } | |
| 1119 | |
| 1120 /* Must match the convoluted logic above for LOCK_DNS() */ | |
| 1121 #if defined(_PR_HAVE_GETIPNODEBYADDR) && defined(_PR_INET6) | |
| 1122 #elif defined(_PR_HAVE_GETIPNODEBYADDR) && defined(_PR_INET6_PROBE) | |
| 1123 #ifdef PR_GETIPNODE_NOT_THREADSAFE | |
| 1124 UNLOCK_DNS(); | |
| 1125 #else | |
| 1126 if (!_pr_ipv6_is_present()) | |
| 1127 UNLOCK_DNS(); | |
| 1128 #endif | |
| 1129 #else /* _PR_HAVE_GETIPNODEBYADDR */ | |
| 1130 UNLOCK_DNS(); | |
| 1131 #endif /* _PR_HAVE_GETIPNODEBYADDR */ | |
| 1132 | |
| 1133 #if defined(_PR_HAVE_GETHOST_R) | |
| 1134 if (tmpbuf != localbuf) | |
| 1135 PR_Free(tmpbuf); | |
| 1136 #endif | |
| 1137 | |
| 1138 return rv; | |
| 1139 } | |
| 1140 | |
| 1141 /******************************************************************************/ | |
| 1142 /* | |
| 1143 * Some systems define a reentrant version of getprotobyname(). Too bad | |
| 1144 * the signature isn't always the same. But hey, they tried. If there | |
| 1145 * is such a definition, use it. Otherwise, grab a lock and do it here. | |
| 1146 */ | |
| 1147 /******************************************************************************/ | |
| 1148 | |
| 1149 #if !defined(_PR_HAVE_GETPROTO_R) | |
| 1150 /* | |
| 1151 * This may seem like a silly thing to do, but the compiler SHOULD | |
| 1152 * complain if getprotobyname_r() is implemented on some system and | |
| 1153 * we're not using it. For sure these signatures are different than | |
| 1154 * any usable implementation. | |
| 1155 */ | |
| 1156 | |
| 1157 #if defined(ANDROID) | |
| 1158 /* Android's Bionic libc system includes prototypes for these in netdb.h, | |
| 1159 * but doesn't actually include implementations. It uses the 5-arg form, | |
| 1160 * so these functions end up not matching the prototype. So just rename | |
| 1161 * them if not found. | |
| 1162 */ | |
| 1163 #define getprotobyname_r _pr_getprotobyname_r | |
| 1164 #define getprotobynumber_r _pr_getprotobynumber_r | |
| 1165 #endif | |
| 1166 | |
| 1167 static struct protoent *getprotobyname_r(const char* name) | |
| 1168 { | |
| 1169 return getprotobyname(name); | |
| 1170 } /* getprotobyname_r */ | |
| 1171 | |
| 1172 static struct protoent *getprotobynumber_r(PRInt32 number) | |
| 1173 { | |
| 1174 return getprotobynumber(number); | |
| 1175 } /* getprotobynumber_r */ | |
| 1176 | |
| 1177 #endif /* !defined(_PR_HAVE_GETPROTO_R) */ | |
| 1178 | |
| 1179 PR_IMPLEMENT(PRStatus) PR_GetProtoByName( | |
| 1180 const char* name, char* buffer, PRInt32 buflen, PRProtoEnt* result) | |
| 1181 { | |
| 1182 PRStatus rv = PR_SUCCESS; | |
| 1183 #if defined(_PR_HAVE_GETPROTO_R) | |
| 1184 struct protoent* res = (struct protoent*)result; | |
| 1185 #endif | |
| 1186 | |
| 1187 if (!_pr_initialized) _PR_ImplicitInitialization(); | |
| 1188 | |
| 1189 #if defined(_PR_HAVE_GETPROTO_R_INT) | |
| 1190 { | |
| 1191 /* | |
| 1192 ** The protoent_data has a pointer as the first field. | |
| 1193 ** That implies the buffer better be aligned, and char* | |
| 1194 ** doesn't promise much. | |
| 1195 */ | |
| 1196 PRUptrdiff aligned = (PRUptrdiff)buffer; | |
| 1197 if (0 != (aligned & (sizeof(struct protoent_data*) - 1))) | |
| 1198 { | |
| 1199 aligned += sizeof(struct protoent_data*) - 1; | |
| 1200 aligned &= ~(sizeof(struct protoent_data*) - 1); | |
| 1201 buflen -= (aligned - (PRUptrdiff)buffer); | |
| 1202 buffer = (char*)aligned; | |
| 1203 } | |
| 1204 } | |
| 1205 #endif /* defined(_PR_HAVE_GETPROTO_R_INT) */ | |
| 1206 | |
| 1207 if (PR_NETDB_BUF_SIZE > buflen) | |
| 1208 { | |
| 1209 PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0); | |
| 1210 return PR_FAILURE; | |
| 1211 } | |
| 1212 | |
| 1213 #if defined(_PR_HAVE_GETPROTO_R_POINTER) | |
| 1214 if (NULL == getprotobyname_r(name, res, buffer, buflen)) | |
| 1215 { | |
| 1216 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_ERRNO()); | |
| 1217 return PR_FAILURE; | |
| 1218 } | |
| 1219 #elif defined(_PR_HAVE_GETPROTO_R_INT) | |
| 1220 /* | |
| 1221 ** The buffer needs to be zero'd, and it should be | |
| 1222 ** at least the size of a struct protoent_data. | |
| 1223 */ | |
| 1224 memset(buffer, 0, buflen); | |
| 1225 if (-1 == getprotobyname_r(name, res, (struct protoent_data*)buffer)) | |
| 1226 { | |
| 1227 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_ERRNO()); | |
| 1228 return PR_FAILURE; | |
| 1229 } | |
| 1230 #elif defined(_PR_HAVE_5_ARG_GETPROTO_R) | |
| 1231 /* The 5th argument for getprotobyname_r() cannot be NULL */ | |
| 1232 if (-1 == getprotobyname_r(name, res, buffer, buflen, &res)) | |
| 1233 { | |
| 1234 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_ERRNO()); | |
| 1235 return PR_FAILURE; | |
| 1236 } | |
| 1237 #else /* do it the hard way */ | |
| 1238 { | |
| 1239 struct protoent *staticBuf; | |
| 1240 PR_Lock(_getproto_lock); | |
| 1241 staticBuf = getprotobyname_r(name); | |
| 1242 if (NULL == staticBuf) | |
| 1243 { | |
| 1244 rv = PR_FAILURE; | |
| 1245 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_ERRNO()); | |
| 1246 } | |
| 1247 else | |
| 1248 { | |
| 1249 #if defined(SYMBIAN) | |
| 1250 char* aliases[2]; | |
| 1251 AssignAliases(staticBuf, aliases); | |
| 1252 #endif | |
| 1253 rv = CopyProtoent(staticBuf, buffer, buflen, result); | |
| 1254 if (PR_FAILURE == rv) | |
| 1255 PR_SetError(PR_INSUFFICIENT_RESOURCES_ERROR, 0); | |
| 1256 } | |
| 1257 PR_Unlock(_getproto_lock); | |
| 1258 } | |
| 1259 #endif /* all that */ | |
| 1260 return rv; | |
| 1261 } | |
| 1262 | |
| 1263 PR_IMPLEMENT(PRStatus) PR_GetProtoByNumber( | |
| 1264 PRInt32 number, char* buffer, PRInt32 buflen, PRProtoEnt* result) | |
| 1265 { | |
| 1266 PRStatus rv = PR_SUCCESS; | |
| 1267 #if defined(_PR_HAVE_GETPROTO_R) | |
| 1268 struct protoent* res = (struct protoent*)result; | |
| 1269 #endif | |
| 1270 | |
| 1271 if (!_pr_initialized) _PR_ImplicitInitialization(); | |
| 1272 | |
| 1273 #if defined(_PR_HAVE_GETPROTO_R_INT) | |
| 1274 { | |
| 1275 /* | |
| 1276 ** The protoent_data has a pointer as the first field. | |
| 1277 ** That implies the buffer better be aligned, and char* | |
| 1278 ** doesn't promise much. | |
| 1279 */ | |
| 1280 PRUptrdiff aligned = (PRUptrdiff)buffer; | |
| 1281 if (0 != (aligned & (sizeof(struct protoent_data*) - 1))) | |
| 1282 { | |
| 1283 aligned += sizeof(struct protoent_data*) - 1; | |
| 1284 aligned &= ~(sizeof(struct protoent_data*) - 1); | |
| 1285 buflen -= (aligned - (PRUptrdiff)buffer); | |
| 1286 buffer = (char*)aligned; | |
| 1287 } | |
| 1288 } | |
| 1289 #endif /* defined(_PR_HAVE_GETPROTO_R_INT) */ | |
| 1290 | |
| 1291 if (PR_NETDB_BUF_SIZE > buflen) | |
| 1292 { | |
| 1293 PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0); | |
| 1294 return PR_FAILURE; | |
| 1295 } | |
| 1296 | |
| 1297 #if defined(_PR_HAVE_GETPROTO_R_POINTER) | |
| 1298 if (NULL == getprotobynumber_r(number, res, buffer, buflen)) | |
| 1299 { | |
| 1300 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_ERRNO()); | |
| 1301 return PR_FAILURE; | |
| 1302 } | |
| 1303 | |
| 1304 #elif defined(_PR_HAVE_GETPROTO_R_INT) | |
| 1305 /* | |
| 1306 ** The buffer needs to be zero'd for these OS's. | |
| 1307 */ | |
| 1308 memset(buffer, 0, buflen); | |
| 1309 if (-1 == getprotobynumber_r(number, res, (struct protoent_data*)buffer)
) | |
| 1310 { | |
| 1311 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_ERRNO()); | |
| 1312 return PR_FAILURE; | |
| 1313 } | |
| 1314 #elif defined(_PR_HAVE_5_ARG_GETPROTO_R) | |
| 1315 /* The 5th argument for getprotobynumber_r() cannot be NULL */ | |
| 1316 if (-1 == getprotobynumber_r(number, res, buffer, buflen, &res)) | |
| 1317 { | |
| 1318 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_ERRNO()); | |
| 1319 return PR_FAILURE; | |
| 1320 } | |
| 1321 #else /* do it the hard way */ | |
| 1322 { | |
| 1323 struct protoent *staticBuf; | |
| 1324 PR_Lock(_getproto_lock); | |
| 1325 staticBuf = getprotobynumber_r(number); | |
| 1326 if (NULL == staticBuf) | |
| 1327 { | |
| 1328 rv = PR_FAILURE; | |
| 1329 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, _MD_ERRNO()); | |
| 1330 } | |
| 1331 else | |
| 1332 { | |
| 1333 #if defined(SYMBIAN) | |
| 1334 char* aliases[2]; | |
| 1335 AssignAliases(staticBuf, aliases); | |
| 1336 #endif | |
| 1337 rv = CopyProtoent(staticBuf, buffer, buflen, result); | |
| 1338 if (PR_FAILURE == rv) | |
| 1339 PR_SetError(PR_INSUFFICIENT_RESOURCES_ERROR, 0); | |
| 1340 } | |
| 1341 PR_Unlock(_getproto_lock); | |
| 1342 } | |
| 1343 #endif /* all that crap */ | |
| 1344 return rv; | |
| 1345 | |
| 1346 } | |
| 1347 | |
| 1348 PRUintn _PR_NetAddrSize(const PRNetAddr* addr) | |
| 1349 { | |
| 1350 PRUintn addrsize; | |
| 1351 | |
| 1352 /* | |
| 1353 * RFC 2553 added a new field (sin6_scope_id) to | |
| 1354 * struct sockaddr_in6. PRNetAddr's ipv6 member has a | |
| 1355 * scope_id field to match the new field. In order to | |
| 1356 * work with older implementations supporting RFC 2133, | |
| 1357 * we take the size of struct sockaddr_in6 instead of | |
| 1358 * addr->ipv6. | |
| 1359 */ | |
| 1360 if (AF_INET == addr->raw.family) | |
| 1361 addrsize = sizeof(addr->inet); | |
| 1362 else if (PR_AF_INET6 == addr->raw.family) | |
| 1363 #if defined(_PR_INET6) | |
| 1364 addrsize = sizeof(struct sockaddr_in6); | |
| 1365 #else | |
| 1366 addrsize = sizeof(addr->ipv6); | |
| 1367 #endif | |
| 1368 #if defined(XP_UNIX) || defined(XP_OS2) | |
| 1369 else if (AF_UNIX == addr->raw.family) | |
| 1370 addrsize = sizeof(addr->local); | |
| 1371 #endif | |
| 1372 else addrsize = 0; | |
| 1373 | |
| 1374 return addrsize; | |
| 1375 } /* _PR_NetAddrSize */ | |
| 1376 | |
| 1377 PR_IMPLEMENT(PRIntn) PR_EnumerateHostEnt( | |
| 1378 PRIntn enumIndex, const PRHostEnt *hostEnt, PRUint16 port, PRNetAddr *addres
s) | |
| 1379 { | |
| 1380 void *addr = hostEnt->h_addr_list[enumIndex++]; | |
| 1381 memset(address, 0, sizeof(PRNetAddr)); | |
| 1382 if (NULL == addr) enumIndex = 0; | |
| 1383 else | |
| 1384 { | |
| 1385 address->raw.family = hostEnt->h_addrtype; | |
| 1386 if (PR_AF_INET6 == hostEnt->h_addrtype) | |
| 1387 { | |
| 1388 address->ipv6.port = htons(port); | |
| 1389 address->ipv6.flowinfo = 0; | |
| 1390 address->ipv6.scope_id = 0; | |
| 1391 memcpy(&address->ipv6.ip, addr, hostEnt->h_length); | |
| 1392 } | |
| 1393 else | |
| 1394 { | |
| 1395 PR_ASSERT(AF_INET == hostEnt->h_addrtype); | |
| 1396 address->inet.port = htons(port); | |
| 1397 memcpy(&address->inet.ip, addr, hostEnt->h_length); | |
| 1398 } | |
| 1399 } | |
| 1400 return enumIndex; | |
| 1401 } /* PR_EnumerateHostEnt */ | |
| 1402 | |
| 1403 PR_IMPLEMENT(PRStatus) PR_InitializeNetAddr( | |
| 1404 PRNetAddrValue val, PRUint16 port, PRNetAddr *addr) | |
| 1405 { | |
| 1406 PRStatus rv = PR_SUCCESS; | |
| 1407 if (!_pr_initialized) _PR_ImplicitInitialization(); | |
| 1408 | |
| 1409 if (val != PR_IpAddrNull) memset(addr, 0, sizeof(addr->inet)); | |
| 1410 addr->inet.family = AF_INET; | |
| 1411 addr->inet.port = htons(port); | |
| 1412 switch (val) | |
| 1413 { | |
| 1414 case PR_IpAddrNull: | |
| 1415 break; /* don't overwrite the address */ | |
| 1416 case PR_IpAddrAny: | |
| 1417 addr->inet.ip = htonl(INADDR_ANY); | |
| 1418 break; | |
| 1419 case PR_IpAddrLoopback: | |
| 1420 addr->inet.ip = htonl(INADDR_LOOPBACK); | |
| 1421 break; | |
| 1422 default: | |
| 1423 PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0); | |
| 1424 rv = PR_FAILURE; | |
| 1425 } | |
| 1426 return rv; | |
| 1427 } /* PR_InitializeNetAddr */ | |
| 1428 | |
| 1429 PR_IMPLEMENT(PRStatus) PR_SetNetAddr( | |
| 1430 PRNetAddrValue val, PRUint16 af, PRUint16 port, PRNetAddr *addr) | |
| 1431 { | |
| 1432 PRStatus rv = PR_SUCCESS; | |
| 1433 if (!_pr_initialized) _PR_ImplicitInitialization(); | |
| 1434 | |
| 1435 if (af == PR_AF_INET6) | |
| 1436 { | |
| 1437 if (val != PR_IpAddrNull) memset(addr, 0, sizeof(addr->ipv6)); | |
| 1438 addr->ipv6.family = af; | |
| 1439 addr->ipv6.port = htons(port); | |
| 1440 addr->ipv6.flowinfo = 0; | |
| 1441 addr->ipv6.scope_id = 0; | |
| 1442 switch (val) | |
| 1443 { | |
| 1444 case PR_IpAddrNull: | |
| 1445 break; /* don't overwrite the address */ | |
| 1446 case PR_IpAddrAny: | |
| 1447 addr->ipv6.ip = _pr_in6addr_any; | |
| 1448 break; | |
| 1449 case PR_IpAddrLoopback: | |
| 1450 addr->ipv6.ip = _pr_in6addr_loopback; | |
| 1451 break; | |
| 1452 default: | |
| 1453 PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0); | |
| 1454 rv = PR_FAILURE; | |
| 1455 } | |
| 1456 } | |
| 1457 else | |
| 1458 { | |
| 1459 if (val != PR_IpAddrNull) memset(addr, 0, sizeof(addr->inet)); | |
| 1460 addr->inet.family = af; | |
| 1461 addr->inet.port = htons(port); | |
| 1462 switch (val) | |
| 1463 { | |
| 1464 case PR_IpAddrNull: | |
| 1465 break; /* don't overwrite the address */ | |
| 1466 case PR_IpAddrAny: | |
| 1467 addr->inet.ip = htonl(INADDR_ANY); | |
| 1468 break; | |
| 1469 case PR_IpAddrLoopback: | |
| 1470 addr->inet.ip = htonl(INADDR_LOOPBACK); | |
| 1471 break; | |
| 1472 default: | |
| 1473 PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0); | |
| 1474 rv = PR_FAILURE; | |
| 1475 } | |
| 1476 } | |
| 1477 return rv; | |
| 1478 } /* PR_SetNetAddr */ | |
| 1479 | |
| 1480 PR_IMPLEMENT(PRBool) | |
| 1481 PR_IsNetAddrType(const PRNetAddr *addr, PRNetAddrValue val) | |
| 1482 { | |
| 1483 if (addr->raw.family == PR_AF_INET6) { | |
| 1484 if (val == PR_IpAddrAny) { | |
| 1485 if (_PR_IN6_IS_ADDR_UNSPECIFIED((PRIPv6Addr *)&addr->ipv
6.ip)) { | |
| 1486 return PR_TRUE; | |
| 1487 } else if (_PR_IN6_IS_ADDR_V4MAPPED((PRIPv6Addr *)&addr-
>ipv6.ip) | |
| 1488 && _PR_IN6_V4MAPPED_TO_IPADDR((PRIPv6Add
r *)&addr->ipv6.ip) | |
| 1489 == htonl(INADDR_ANY)) { | |
| 1490 return PR_TRUE; | |
| 1491 } | |
| 1492 } else if (val == PR_IpAddrLoopback) { | |
| 1493 if (_PR_IN6_IS_ADDR_LOOPBACK((PRIPv6Addr *)&addr->ipv6.ip)) { | |
| 1494 return PR_TRUE; | |
| 1495 } else if (_PR_IN6_IS_ADDR_V4MAPPED((PRIPv6Addr *)&addr-
>ipv6.ip) | |
| 1496 && _PR_IN6_V4MAPPED_TO_IPADDR((PRIPv6Add
r *)&addr->ipv6.ip) | |
| 1497 == htonl(INADDR_LOOPBACK
)) { | |
| 1498 return PR_TRUE; | |
| 1499 } | |
| 1500 } else if (val == PR_IpAddrV4Mapped | |
| 1501 && _PR_IN6_IS_ADDR_V4MAPPED((PRIPv6Addr *)&addr->ipv6.ip)) { | |
| 1502 return PR_TRUE; | |
| 1503 } | |
| 1504 } else { | |
| 1505 if (addr->raw.family == AF_INET) { | |
| 1506 if (val == PR_IpAddrAny && addr->inet.ip == htonl(INADDR_ANY)) { | |
| 1507 return PR_TRUE; | |
| 1508 } else if (val == PR_IpAddrLoopback | |
| 1509 && addr->inet.ip == htonl(INADDR_LOOPBACK)) { | |
| 1510 return PR_TRUE; | |
| 1511 } | |
| 1512 } | |
| 1513 } | |
| 1514 return PR_FALSE; | |
| 1515 } | |
| 1516 | |
| 1517 extern int pr_inet_aton(const char *cp, PRUint32 *addr); | |
| 1518 | |
| 1519 #define XX 127 | |
| 1520 static const unsigned char index_hex[256] = { | |
| 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 XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, | |
| 1524 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,XX,XX, XX,XX,XX,XX, | |
| 1525 XX,10,11,12, 13,14,15,XX, XX,XX,XX,XX, XX,XX,XX,XX, | |
| 1526 XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, | |
| 1527 XX,10,11,12, 13,14,15,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 XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, XX,XX,XX,XX, | |
| 1537 }; | |
| 1538 | |
| 1539 /* | |
| 1540 * StringToV6Addr() returns 1 if the conversion succeeds, | |
| 1541 * or 0 if the input is not a valid IPv6 address string. | |
| 1542 * (Same as inet_pton(AF_INET6, string, addr).) | |
| 1543 */ | |
| 1544 static int StringToV6Addr(const char *string, PRIPv6Addr *addr) | |
| 1545 { | |
| 1546 const unsigned char *s = (const unsigned char *)string; | |
| 1547 int section = 0; /* index of the current section (a 16-bit | |
| 1548 * piece of the address */ | |
| 1549 int double_colon = -1; /* index of the section after the first | |
| 1550 * 16-bit group of zeros represented by | |
| 1551 * the double colon */ | |
| 1552 unsigned int val; | |
| 1553 int len; | |
| 1554 | |
| 1555 /* Handle initial (double) colon */ | |
| 1556 if (*s == ':') { | |
| 1557 if (s[1] != ':') return 0; | |
| 1558 s += 2; | |
| 1559 addr->pr_s6_addr16[0] = 0; | |
| 1560 section = double_colon = 1; | |
| 1561 } | |
| 1562 | |
| 1563 while (*s) { | |
| 1564 if (section == 8) return 0; /* too long */ | |
| 1565 if (*s == ':') { | |
| 1566 if (double_colon != -1) return 0; /* two double colons */ | |
| 1567 addr->pr_s6_addr16[section++] = 0; | |
| 1568 double_colon = section; | |
| 1569 s++; | |
| 1570 continue; | |
| 1571 } | |
| 1572 for (len = val = 0; len < 4 && index_hex[*s] != XX; len++) { | |
| 1573 val = (val << 4) + index_hex[*s++]; | |
| 1574 } | |
| 1575 if (*s == '.') { | |
| 1576 if (len == 0) return 0; /* nothing between : and . */ | |
| 1577 break; | |
| 1578 } | |
| 1579 if (*s == ':') { | |
| 1580 s++; | |
| 1581 if (!*s) return 0; /* cannot end with single colon */ | |
| 1582 } else if (*s) { | |
| 1583 return 0; /* bad character */ | |
| 1584 } | |
| 1585 addr->pr_s6_addr16[section++] = htons((unsigned short)val); | |
| 1586 } | |
| 1587 | |
| 1588 if (*s == '.') { | |
| 1589 /* Have a trailing v4 format address */ | |
| 1590 if (section > 6) return 0; /* not enough room */ | |
| 1591 | |
| 1592 /* | |
| 1593 * The number before the '.' is decimal, but we parsed it | |
| 1594 * as hex. That means it is in BCD. Check it for validity | |
| 1595 * and convert it to binary. | |
| 1596 */ | |
| 1597 if (val > 0x0255 || (val & 0xf0) > 0x90 || (val & 0xf) > 9) return 0; | |
| 1598 val = (val >> 8) * 100 + ((val >> 4) & 0xf) * 10 + (val & 0xf); | |
| 1599 addr->pr_s6_addr[2 * section] = val; | |
| 1600 | |
| 1601 s++; | |
| 1602 val = index_hex[*s++]; | |
| 1603 if (val > 9) return 0; | |
| 1604 while (*s >= '0' && *s <= '9') { | |
| 1605 val = val * 10 + *s++ - '0'; | |
| 1606 if (val > 255) return 0; | |
| 1607 } | |
| 1608 if (*s != '.') return 0; /* must have exactly 4 decimal numbers */ | |
| 1609 addr->pr_s6_addr[2 * section + 1] = val; | |
| 1610 section++; | |
| 1611 | |
| 1612 s++; | |
| 1613 val = index_hex[*s++]; | |
| 1614 if (val > 9) return 0; | |
| 1615 while (*s >= '0' && *s <= '9') { | |
| 1616 val = val * 10 + *s++ - '0'; | |
| 1617 if (val > 255) return 0; | |
| 1618 } | |
| 1619 if (*s != '.') return 0; /* must have exactly 4 decimal numbers */ | |
| 1620 addr->pr_s6_addr[2 * section] = val; | |
| 1621 | |
| 1622 s++; | |
| 1623 val = index_hex[*s++]; | |
| 1624 if (val > 9) return 0; | |
| 1625 while (*s >= '0' && *s <= '9') { | |
| 1626 val = val * 10 + *s++ - '0'; | |
| 1627 if (val > 255) return 0; | |
| 1628 } | |
| 1629 if (*s) return 0; /* must have exactly 4 decimal numbers */ | |
| 1630 addr->pr_s6_addr[2 * section + 1] = val; | |
| 1631 section++; | |
| 1632 } | |
| 1633 | |
| 1634 if (double_colon != -1) { | |
| 1635 /* Stretch the double colon */ | |
| 1636 int tosection; | |
| 1637 int ncopy = section - double_colon; | |
| 1638 for (tosection = 7; ncopy--; tosection--) { | |
| 1639 addr->pr_s6_addr16[tosection] = | |
| 1640 addr->pr_s6_addr16[double_colon + ncopy]; | |
| 1641 } | |
| 1642 while (tosection >= double_colon) { | |
| 1643 addr->pr_s6_addr16[tosection--] = 0; | |
| 1644 } | |
| 1645 } else if (section != 8) { | |
| 1646 return 0; /* too short */ | |
| 1647 } | |
| 1648 return 1; | |
| 1649 } | |
| 1650 #undef XX | |
| 1651 | |
| 1652 #ifndef _PR_HAVE_INET_NTOP | |
| 1653 static const char *basis_hex = "0123456789abcdef"; | |
| 1654 | |
| 1655 /* | |
| 1656 * V6AddrToString() returns a pointer to the buffer containing | |
| 1657 * the text string if the conversion succeeds, and NULL otherwise. | |
| 1658 * (Same as inet_ntop(AF_INET6, addr, buf, size), except that errno | |
| 1659 * is not set on failure.) | |
| 1660 */ | |
| 1661 static const char *V6AddrToString( | |
| 1662 const PRIPv6Addr *addr, char *buf, PRUint32 size) | |
| 1663 { | |
| 1664 #define STUFF(c) do { \ | |
| 1665 if (!size--) return NULL; \ | |
| 1666 *buf++ = (c); \ | |
| 1667 } while (0) | |
| 1668 | |
| 1669 int double_colon = -1; /* index of the first 16-bit | |
| 1670 * group of zeros represented | |
| 1671 * by the double colon */ | |
| 1672 int double_colon_length = 1; /* use double colon only if | |
| 1673 * there are two or more 16-bit | |
| 1674 * groups of zeros */ | |
| 1675 int zero_length; | |
| 1676 int section; | |
| 1677 unsigned int val; | |
| 1678 const char *bufcopy = buf; | |
| 1679 | |
| 1680 /* Scan to find the placement of the double colon */ | |
| 1681 for (section = 0; section < 8; section++) { | |
| 1682 if (addr->pr_s6_addr16[section] == 0) { | |
| 1683 zero_length = 1; | |
| 1684 section++; | |
| 1685 while (section < 8 && addr->pr_s6_addr16[section] == 0) { | |
| 1686 zero_length++; | |
| 1687 section++; | |
| 1688 } | |
| 1689 /* Select the longest sequence of zeros */ | |
| 1690 if (zero_length > double_colon_length) { | |
| 1691 double_colon = section - zero_length; | |
| 1692 double_colon_length = zero_length; | |
| 1693 } | |
| 1694 } | |
| 1695 } | |
| 1696 | |
| 1697 /* Now start converting to a string */ | |
| 1698 section = 0; | |
| 1699 | |
| 1700 if (double_colon == 0) { | |
| 1701 if (double_colon_length == 6 || | |
| 1702 (double_colon_length == 5 && addr->pr_s6_addr16[5] == 0xffff)) { | |
| 1703 /* ipv4 format address */ | |
| 1704 STUFF(':'); | |
| 1705 STUFF(':'); | |
| 1706 if (double_colon_length == 5) { | |
| 1707 STUFF('f'); | |
| 1708 STUFF('f'); | |
| 1709 STUFF('f'); | |
| 1710 STUFF('f'); | |
| 1711 STUFF(':'); | |
| 1712 } | |
| 1713 if (addr->pr_s6_addr[12] > 99) STUFF(addr->pr_s6_addr[12]/100 + '0')
; | |
| 1714 if (addr->pr_s6_addr[12] > 9) STUFF((addr->pr_s6_addr[12]%100)/10 +
'0'); | |
| 1715 STUFF(addr->pr_s6_addr[12]%10 + '0'); | |
| 1716 STUFF('.'); | |
| 1717 if (addr->pr_s6_addr[13] > 99) STUFF(addr->pr_s6_addr[13]/100 + '0')
; | |
| 1718 if (addr->pr_s6_addr[13] > 9) STUFF((addr->pr_s6_addr[13]%100)/10 +
'0'); | |
| 1719 STUFF(addr->pr_s6_addr[13]%10 + '0'); | |
| 1720 STUFF('.'); | |
| 1721 if (addr->pr_s6_addr[14] > 99) STUFF(addr->pr_s6_addr[14]/100 + '0')
; | |
| 1722 if (addr->pr_s6_addr[14] > 9) STUFF((addr->pr_s6_addr[14]%100)/10 +
'0'); | |
| 1723 STUFF(addr->pr_s6_addr[14]%10 + '0'); | |
| 1724 STUFF('.'); | |
| 1725 if (addr->pr_s6_addr[15] > 99) STUFF(addr->pr_s6_addr[15]/100 + '0')
; | |
| 1726 if (addr->pr_s6_addr[15] > 9) STUFF((addr->pr_s6_addr[15]%100)/10 +
'0'); | |
| 1727 STUFF(addr->pr_s6_addr[15]%10 + '0'); | |
| 1728 STUFF('\0'); | |
| 1729 return bufcopy; | |
| 1730 } | |
| 1731 } | |
| 1732 | |
| 1733 while (section < 8) { | |
| 1734 if (section == double_colon) { | |
| 1735 STUFF(':'); | |
| 1736 STUFF(':'); | |
| 1737 section += double_colon_length; | |
| 1738 continue; | |
| 1739 } | |
| 1740 val = ntohs(addr->pr_s6_addr16[section]); | |
| 1741 if (val > 0xfff) { | |
| 1742 STUFF(basis_hex[val >> 12]); | |
| 1743 } | |
| 1744 if (val > 0xff) { | |
| 1745 STUFF(basis_hex[(val >> 8) & 0xf]); | |
| 1746 } | |
| 1747 if (val > 0xf) { | |
| 1748 STUFF(basis_hex[(val >> 4) & 0xf]); | |
| 1749 } | |
| 1750 STUFF(basis_hex[val & 0xf]); | |
| 1751 section++; | |
| 1752 if (section < 8 && section != double_colon) STUFF(':'); | |
| 1753 } | |
| 1754 STUFF('\0'); | |
| 1755 return bufcopy; | |
| 1756 #undef STUFF | |
| 1757 } | |
| 1758 #endif /* !_PR_HAVE_INET_NTOP */ | |
| 1759 | |
| 1760 /* | |
| 1761 * Convert an IPv4 addr to an (IPv4-mapped) IPv6 addr | |
| 1762 */ | |
| 1763 PR_IMPLEMENT(void) PR_ConvertIPv4AddrToIPv6(PRUint32 v4addr, PRIPv6Addr *v6addr) | |
| 1764 { | |
| 1765 PRUint8 *dstp; | |
| 1766 dstp = v6addr->pr_s6_addr; | |
| 1767 memset(dstp, 0, 10); | |
| 1768 memset(dstp + 10, 0xff, 2); | |
| 1769 memcpy(dstp + 12,(char *) &v4addr, 4); | |
| 1770 } | |
| 1771 | |
| 1772 PR_IMPLEMENT(PRUint16) PR_ntohs(PRUint16 n) { return ntohs(n); } | |
| 1773 PR_IMPLEMENT(PRUint32) PR_ntohl(PRUint32 n) { return ntohl(n); } | |
| 1774 PR_IMPLEMENT(PRUint16) PR_htons(PRUint16 n) { return htons(n); } | |
| 1775 PR_IMPLEMENT(PRUint32) PR_htonl(PRUint32 n) { return htonl(n); } | |
| 1776 PR_IMPLEMENT(PRUint64) PR_ntohll(PRUint64 n) | |
| 1777 { | |
| 1778 #ifdef IS_BIG_ENDIAN | |
| 1779 return n; | |
| 1780 #else | |
| 1781 PRUint64 tmp; | |
| 1782 PRUint32 hi, lo; | |
| 1783 LL_L2UI(lo, n); | |
| 1784 LL_SHR(tmp, n, 32); | |
| 1785 LL_L2UI(hi, tmp); | |
| 1786 hi = PR_ntohl(hi); | |
| 1787 lo = PR_ntohl(lo); | |
| 1788 LL_UI2L(n, lo); | |
| 1789 LL_SHL(n, n, 32); | |
| 1790 LL_UI2L(tmp, hi); | |
| 1791 LL_ADD(n, n, tmp); | |
| 1792 return n; | |
| 1793 #endif | |
| 1794 } /* ntohll */ | |
| 1795 | |
| 1796 PR_IMPLEMENT(PRUint64) PR_htonll(PRUint64 n) | |
| 1797 { | |
| 1798 #ifdef IS_BIG_ENDIAN | |
| 1799 return n; | |
| 1800 #else | |
| 1801 PRUint64 tmp; | |
| 1802 PRUint32 hi, lo; | |
| 1803 LL_L2UI(lo, n); | |
| 1804 LL_SHR(tmp, n, 32); | |
| 1805 LL_L2UI(hi, tmp); | |
| 1806 hi = htonl(hi); | |
| 1807 lo = htonl(lo); | |
| 1808 LL_UI2L(n, lo); | |
| 1809 LL_SHL(n, n, 32); | |
| 1810 LL_UI2L(tmp, hi); | |
| 1811 LL_ADD(n, n, tmp); | |
| 1812 return n; | |
| 1813 #endif | |
| 1814 } /* htonll */ | |
| 1815 | |
| 1816 | |
| 1817 /* | |
| 1818 * Implementation of PR_GetAddrInfoByName and friends | |
| 1819 * | |
| 1820 * Compile-time options: | |
| 1821 * | |
| 1822 * _PR_HAVE_GETADDRINFO Define this macro if the target system provides | |
| 1823 * getaddrinfo. With this defined, NSPR will require | |
| 1824 * getaddrinfo at run time. If this if not defined, | |
| 1825 * then NSPR will attempt to dynamically resolve | |
| 1826 * getaddrinfo, falling back to PR_GetHostByName if | |
| 1827 * getaddrinfo does not exist on the target system. | |
| 1828 * | |
| 1829 * Since getaddrinfo is a relatively new system call on many systems, | |
| 1830 * we are forced to dynamically resolve it at run time in most cases. | |
| 1831 * The exception includes any system (such as Mac OS X) that is known to | |
| 1832 * provide getaddrinfo in all versions that NSPR cares to support. | |
| 1833 */ | |
| 1834 | |
| 1835 #if defined(_PR_HAVE_GETADDRINFO) | |
| 1836 | |
| 1837 #if defined(_PR_INET6) | |
| 1838 | |
| 1839 typedef struct addrinfo PRADDRINFO; | |
| 1840 #define GETADDRINFO getaddrinfo | |
| 1841 #define FREEADDRINFO freeaddrinfo | |
| 1842 #define GETNAMEINFO getnameinfo | |
| 1843 | |
| 1844 #elif defined(_PR_INET6_PROBE) | |
| 1845 | |
| 1846 typedef struct addrinfo PRADDRINFO; | |
| 1847 | |
| 1848 /* getaddrinfo/freeaddrinfo/getnameinfo prototypes */ | |
| 1849 #if defined(WIN32) | |
| 1850 #define FUNC_MODIFIER __stdcall | |
| 1851 #else | |
| 1852 #define FUNC_MODIFIER | |
| 1853 #endif | |
| 1854 typedef int (FUNC_MODIFIER * FN_GETADDRINFO) | |
| 1855 (const char *nodename, | |
| 1856 const char *servname, | |
| 1857 const PRADDRINFO *hints, | |
| 1858 PRADDRINFO **res); | |
| 1859 typedef int (FUNC_MODIFIER * FN_FREEADDRINFO) | |
| 1860 (PRADDRINFO *ai); | |
| 1861 typedef int (FUNC_MODIFIER * FN_GETNAMEINFO) | |
| 1862 (const struct sockaddr *addr, int addrlen, | |
| 1863 char *host, int hostlen, | |
| 1864 char *serv, int servlen, int flags); | |
| 1865 | |
| 1866 /* global state */ | |
| 1867 static FN_GETADDRINFO _pr_getaddrinfo = NULL; | |
| 1868 static FN_FREEADDRINFO _pr_freeaddrinfo = NULL; | |
| 1869 static FN_GETNAMEINFO _pr_getnameinfo = NULL; | |
| 1870 | |
| 1871 #define GETADDRINFO_SYMBOL "getaddrinfo" | |
| 1872 #define FREEADDRINFO_SYMBOL "freeaddrinfo" | |
| 1873 #define GETNAMEINFO_SYMBOL "getnameinfo" | |
| 1874 | |
| 1875 PRStatus | |
| 1876 _pr_find_getaddrinfo(void) | |
| 1877 { | |
| 1878 PRLibrary *lib; | |
| 1879 #ifdef WIN32 | |
| 1880 /* | |
| 1881 * On windows, we need to search ws2_32.dll or wship6.dll | |
| 1882 * (Microsoft IPv6 Technology Preview for Windows 2000) for | |
| 1883 * getaddrinfo and freeaddrinfo. These libraries might not | |
| 1884 * be loaded yet. | |
| 1885 */ | |
| 1886 const char *libname[] = { "ws2_32.dll", "wship6.dll" }; | |
| 1887 int i; | |
| 1888 | |
| 1889 for (i = 0; i < sizeof(libname)/sizeof(libname[0]); i++) { | |
| 1890 lib = PR_LoadLibrary(libname[i]); | |
| 1891 if (!lib) { | |
| 1892 continue; | |
| 1893 } | |
| 1894 _pr_getaddrinfo = (FN_GETADDRINFO) | |
| 1895 PR_FindFunctionSymbol(lib, GETADDRINFO_SYMBOL); | |
| 1896 if (!_pr_getaddrinfo) { | |
| 1897 PR_UnloadLibrary(lib); | |
| 1898 continue; | |
| 1899 } | |
| 1900 _pr_freeaddrinfo = (FN_FREEADDRINFO) | |
| 1901 PR_FindFunctionSymbol(lib, FREEADDRINFO_SYMBOL); | |
| 1902 _pr_getnameinfo = (FN_GETNAMEINFO) | |
| 1903 PR_FindFunctionSymbol(lib, GETNAMEINFO_SYMBOL); | |
| 1904 if (!_pr_freeaddrinfo || !_pr_getnameinfo) { | |
| 1905 PR_UnloadLibrary(lib); | |
| 1906 continue; | |
| 1907 } | |
| 1908 /* Keep the library loaded. */ | |
| 1909 return PR_SUCCESS; | |
| 1910 } | |
| 1911 return PR_FAILURE; | |
| 1912 #else | |
| 1913 /* | |
| 1914 * Resolve getaddrinfo by searching all loaded libraries. Then | |
| 1915 * search library containing getaddrinfo for freeaddrinfo. | |
| 1916 */ | |
| 1917 _pr_getaddrinfo = (FN_GETADDRINFO) | |
| 1918 PR_FindFunctionSymbolAndLibrary(GETADDRINFO_SYMBOL, &lib); | |
| 1919 if (!_pr_getaddrinfo) { | |
| 1920 return PR_FAILURE; | |
| 1921 } | |
| 1922 _pr_freeaddrinfo = (FN_FREEADDRINFO) | |
| 1923 PR_FindFunctionSymbol(lib, FREEADDRINFO_SYMBOL); | |
| 1924 _pr_getnameinfo = (FN_GETNAMEINFO) | |
| 1925 PR_FindFunctionSymbol(lib, GETNAMEINFO_SYMBOL); | |
| 1926 PR_UnloadLibrary(lib); | |
| 1927 if (!_pr_freeaddrinfo || !_pr_getnameinfo) { | |
| 1928 return PR_FAILURE; | |
| 1929 } | |
| 1930 return PR_SUCCESS; | |
| 1931 #endif | |
| 1932 } | |
| 1933 | |
| 1934 #define GETADDRINFO (*_pr_getaddrinfo) | |
| 1935 #define FREEADDRINFO (*_pr_freeaddrinfo) | |
| 1936 #define GETNAMEINFO (*_pr_getnameinfo) | |
| 1937 | |
| 1938 #endif /* _PR_INET6 */ | |
| 1939 | |
| 1940 #endif /* _PR_HAVE_GETADDRINFO */ | |
| 1941 | |
| 1942 #if !defined(_PR_HAVE_GETADDRINFO) || defined(_PR_INET6_PROBE) | |
| 1943 /* | |
| 1944 * If getaddrinfo does not exist, then we will fall back on | |
| 1945 * PR_GetHostByName, which requires that we allocate a buffer for the | |
| 1946 * PRHostEnt data structure and its members. | |
| 1947 */ | |
| 1948 typedef struct PRAddrInfoFB { | |
| 1949 char buf[PR_NETDB_BUF_SIZE]; | |
| 1950 PRHostEnt hostent; | |
| 1951 PRBool has_cname; | |
| 1952 } PRAddrInfoFB; | |
| 1953 | |
| 1954 static PRAddrInfo * | |
| 1955 pr_GetAddrInfoByNameFB(const char *hostname, | |
| 1956 PRUint16 af, | |
| 1957 PRIntn flags) | |
| 1958 { | |
| 1959 PRStatus rv; | |
| 1960 PRAddrInfoFB *ai; | |
| 1961 /* fallback on PR_GetHostByName */ | |
| 1962 ai = PR_NEW(PRAddrInfoFB); | |
| 1963 if (!ai) { | |
| 1964 PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0); | |
| 1965 return NULL; | |
| 1966 } | |
| 1967 rv = PR_GetHostByName(hostname, ai->buf, sizeof ai->buf, &ai->hostent); | |
| 1968 if (rv == PR_FAILURE) { | |
| 1969 PR_Free(ai); | |
| 1970 return NULL; | |
| 1971 } | |
| 1972 ai->has_cname = !(flags & PR_AI_NOCANONNAME); | |
| 1973 | |
| 1974 return (PRAddrInfo *) ai; | |
| 1975 } | |
| 1976 #endif /* !_PR_HAVE_GETADDRINFO || _PR_INET6_PROBE */ | |
| 1977 | |
| 1978 PR_IMPLEMENT(PRAddrInfo *) PR_GetAddrInfoByName(const char *hostname, | |
| 1979 PRUint16 af, | |
| 1980 PRIntn flags) | |
| 1981 { | |
| 1982 /* restrict input to supported values */ | |
| 1983 if ((af != PR_AF_INET && af != PR_AF_UNSPEC) || | |
| 1984 (flags & ~ PR_AI_NOCANONNAME) != PR_AI_ADDRCONFIG) { | |
| 1985 PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0); | |
| 1986 return NULL; | |
| 1987 } | |
| 1988 | |
| 1989 if (!_pr_initialized) _PR_ImplicitInitialization(); | |
| 1990 | |
| 1991 #if !defined(_PR_HAVE_GETADDRINFO) | |
| 1992 return pr_GetAddrInfoByNameFB(hostname, af, flags); | |
| 1993 #else | |
| 1994 #if defined(_PR_INET6_PROBE) | |
| 1995 if (!_pr_ipv6_is_present()) { | |
| 1996 return pr_GetAddrInfoByNameFB(hostname, af, flags); | |
| 1997 } | |
| 1998 #endif | |
| 1999 { | |
| 2000 PRADDRINFO *res, hints; | |
| 2001 int rv; | |
| 2002 | |
| 2003 /* | |
| 2004 * we assume a RFC 2553 compliant getaddrinfo. this may at some | |
| 2005 * point need to be customized as platforms begin to adopt the | |
| 2006 * RFC 3493. | |
| 2007 */ | |
| 2008 | |
| 2009 memset(&hints, 0, sizeof(hints)); | |
| 2010 if (!(flags & PR_AI_NOCANONNAME)) | |
| 2011 hints.ai_flags |= AI_CANONNAME; | |
| 2012 #ifdef AI_ADDRCONFIG | |
| 2013 /* | |
| 2014 * Propagate AI_ADDRCONFIG to the GETADDRINFO call if PR_AI_ADDRCONFIG | |
| 2015 * is set. | |
| 2016 * | |
| 2017 * Need a workaround for loopback host addresses: | |
| 2018 * The problem is that in glibc and Windows, AI_ADDRCONFIG applies the | |
| 2019 * existence of an outgoing network interface to IP addresses of the | |
| 2020 * loopback interface, due to a strict interpretation of the | |
| 2021 * specification. For example, if a computer does not have any | |
| 2022 * outgoing IPv6 network interface, but its loopback network interface | |
| 2023 * supports IPv6, a getaddrinfo call on "localhost" with AI_ADDRCONFIG | |
| 2024 * won't return the IPv6 loopback address "::1", because getaddrinfo | |
| 2025 * thinks the computer cannot connect to any IPv6 destination, | |
| 2026 * ignoring the remote vs. local/loopback distinction. | |
| 2027 */ | |
| 2028 if ((flags & PR_AI_ADDRCONFIG) && | |
| 2029 strcmp(hostname, "localhost") != 0 && | |
| 2030 strcmp(hostname, "localhost.localdomain") != 0 && | |
| 2031 strcmp(hostname, "localhost6") != 0 && | |
| 2032 strcmp(hostname, "localhost6.localdomain6") != 0) { | |
| 2033 hints.ai_flags |= AI_ADDRCONFIG; | |
| 2034 } | |
| 2035 #endif | |
| 2036 hints.ai_family = (af == PR_AF_INET) ? AF_INET : AF_UNSPEC; | |
| 2037 | |
| 2038 /* | |
| 2039 * it is important to select a socket type in the hints, otherwise we | |
| 2040 * will get back repetitive entries: one for each socket type. since | |
| 2041 * we do not expose ai_socktype through our API, it is okay to do this | |
| 2042 * here. the application may still choose to create a socket of some | |
| 2043 * other type. | |
| 2044 */ | |
| 2045 hints.ai_socktype = SOCK_STREAM; | |
| 2046 | |
| 2047 rv = GETADDRINFO(hostname, NULL, &hints, &res); | |
| 2048 #ifdef AI_ADDRCONFIG | |
| 2049 if (rv == EAI_BADFLAGS && (hints.ai_flags & AI_ADDRCONFIG)) { | |
| 2050 hints.ai_flags &= ~AI_ADDRCONFIG; | |
| 2051 rv = GETADDRINFO(hostname, NULL, &hints, &res); | |
| 2052 } | |
| 2053 #endif | |
| 2054 if (rv == 0) | |
| 2055 return (PRAddrInfo *) res; | |
| 2056 | |
| 2057 PR_SetError(PR_DIRECTORY_LOOKUP_ERROR, rv); | |
| 2058 } | |
| 2059 return NULL; | |
| 2060 #endif | |
| 2061 } | |
| 2062 | |
| 2063 PR_IMPLEMENT(void) PR_FreeAddrInfo(PRAddrInfo *ai) | |
| 2064 { | |
| 2065 #if defined(_PR_HAVE_GETADDRINFO) | |
| 2066 #if defined(_PR_INET6_PROBE) | |
| 2067 if (!_pr_ipv6_is_present()) | |
| 2068 PR_Free((PRAddrInfoFB *) ai); | |
| 2069 else | |
| 2070 #endif | |
| 2071 FREEADDRINFO((PRADDRINFO *) ai); | |
| 2072 #else | |
| 2073 PR_Free((PRAddrInfoFB *) ai); | |
| 2074 #endif | |
| 2075 } | |
| 2076 | |
| 2077 PR_IMPLEMENT(void *) PR_EnumerateAddrInfo(void *iterPtr, | |
| 2078 const PRAddrInfo *base, | |
| 2079 PRUint16 port, | |
| 2080 PRNetAddr *result) | |
| 2081 { | |
| 2082 #if defined(_PR_HAVE_GETADDRINFO) | |
| 2083 PRADDRINFO *ai; | |
| 2084 #if defined(_PR_INET6_PROBE) | |
| 2085 if (!_pr_ipv6_is_present()) { | |
| 2086 /* using PRAddrInfoFB */ | |
| 2087 PRIntn iter = (PRIntn)(PRPtrdiff) iterPtr; | |
| 2088 iter = PR_EnumerateHostEnt(iter, &((PRAddrInfoFB *) base)->hostent, port
, result); | |
| 2089 if (iter < 0) | |
| 2090 iter = 0; | |
| 2091 return (void *)(PRPtrdiff) iter; | |
| 2092 } | |
| 2093 #endif | |
| 2094 | |
| 2095 if (iterPtr) | |
| 2096 ai = ((PRADDRINFO *) iterPtr)->ai_next; | |
| 2097 else | |
| 2098 ai = (PRADDRINFO *) base; | |
| 2099 | |
| 2100 while (ai && ai->ai_addrlen > sizeof(PRNetAddr)) | |
| 2101 ai = ai->ai_next; | |
| 2102 | |
| 2103 if (ai) { | |
| 2104 /* copy sockaddr to PRNetAddr */ | |
| 2105 memcpy(result, ai->ai_addr, ai->ai_addrlen); | |
| 2106 result->raw.family = ai->ai_addr->sa_family; | |
| 2107 #ifdef _PR_INET6 | |
| 2108 if (AF_INET6 == result->raw.family) | |
| 2109 result->raw.family = PR_AF_INET6; | |
| 2110 #endif | |
| 2111 if (ai->ai_addrlen < sizeof(PRNetAddr)) | |
| 2112 memset(((char*)result)+ai->ai_addrlen, 0, sizeof(PRNetAddr) - ai->ai
_addrlen); | |
| 2113 | |
| 2114 if (result->raw.family == PR_AF_INET) | |
| 2115 result->inet.port = htons(port); | |
| 2116 else | |
| 2117 result->ipv6.port = htons(port); | |
| 2118 } | |
| 2119 | |
| 2120 return ai; | |
| 2121 #else | |
| 2122 /* using PRAddrInfoFB */ | |
| 2123 PRIntn iter = (PRIntn) iterPtr; | |
| 2124 iter = PR_EnumerateHostEnt(iter, &((PRAddrInfoFB *) base)->hostent, port, re
sult); | |
| 2125 if (iter < 0) | |
| 2126 iter = 0; | |
| 2127 return (void *) iter; | |
| 2128 #endif | |
| 2129 } | |
| 2130 | |
| 2131 PR_IMPLEMENT(const char *) PR_GetCanonNameFromAddrInfo(const PRAddrInfo *ai) | |
| 2132 { | |
| 2133 #if defined(_PR_HAVE_GETADDRINFO) | |
| 2134 #if defined(_PR_INET6_PROBE) | |
| 2135 if (!_pr_ipv6_is_present()) { | |
| 2136 const PRAddrInfoFB *fb = (const PRAddrInfoFB *) ai; | |
| 2137 return fb->has_cname ? fb->hostent.h_name : NULL; | |
| 2138 } | |
| 2139 #endif | |
| 2140 return ((const PRADDRINFO *) ai)->ai_canonname; | |
| 2141 #else | |
| 2142 const PRAddrInfoFB *fb = (const PRAddrInfoFB *) ai; | |
| 2143 return fb->has_cname ? fb->hostent.h_name : NULL; | |
| 2144 #endif | |
| 2145 } | |
| 2146 | |
| 2147 #if defined(_PR_HAVE_GETADDRINFO) | |
| 2148 static PRStatus pr_StringToNetAddrGAI(const char *string, PRNetAddr *addr) | |
| 2149 { | |
| 2150 PRADDRINFO *res, hints; | |
| 2151 int rv; /* 0 for success, or the error code EAI_xxx */ | |
| 2152 PRNetAddr laddr; | |
| 2153 PRStatus status = PR_SUCCESS; | |
| 2154 | |
| 2155 memset(&hints, 0, sizeof(hints)); | |
| 2156 hints.ai_flags = AI_NUMERICHOST; | |
| 2157 hints.ai_family = AF_UNSPEC; | |
| 2158 hints.ai_socktype = SOCK_STREAM; | |
| 2159 | |
| 2160 rv = GETADDRINFO(string, NULL, &hints, &res); | |
| 2161 if (rv != 0) | |
| 2162 { | |
| 2163 PR_SetError(PR_INVALID_ARGUMENT_ERROR, rv); | |
| 2164 return PR_FAILURE; | |
| 2165 } | |
| 2166 | |
| 2167 /* pick up the first addr */ | |
| 2168 memcpy(&laddr, res->ai_addr, res->ai_addrlen); | |
| 2169 if (AF_INET6 == res->ai_addr->sa_family) | |
| 2170 { | |
| 2171 addr->ipv6.family = PR_AF_INET6; | |
| 2172 addr->ipv6.ip = laddr.ipv6.ip; | |
| 2173 addr->ipv6.scope_id = laddr.ipv6.scope_id; | |
| 2174 } | |
| 2175 else if (AF_INET == res->ai_addr->sa_family) | |
| 2176 { | |
| 2177 addr->inet.family = PR_AF_INET; | |
| 2178 addr->inet.ip = laddr.inet.ip; | |
| 2179 } | |
| 2180 else | |
| 2181 { | |
| 2182 PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0); | |
| 2183 status = PR_FAILURE; | |
| 2184 } | |
| 2185 | |
| 2186 FREEADDRINFO(res); | |
| 2187 return status; | |
| 2188 } | |
| 2189 #endif /* _PR_HAVE_GETADDRINFO */ | |
| 2190 | |
| 2191 static PRStatus pr_StringToNetAddrFB(const char *string, PRNetAddr *addr) | |
| 2192 { | |
| 2193 PRIntn rv; | |
| 2194 | |
| 2195 rv = pr_inet_aton(string, &addr->inet.ip); | |
| 2196 if (1 == rv) | |
| 2197 { | |
| 2198 addr->raw.family = AF_INET; | |
| 2199 return PR_SUCCESS; | |
| 2200 } | |
| 2201 | |
| 2202 PR_ASSERT(0 == rv); | |
| 2203 /* clean up after the failed call */ | |
| 2204 memset(&addr->inet.ip, 0, sizeof(addr->inet.ip)); | |
| 2205 | |
| 2206 rv = StringToV6Addr(string, &addr->ipv6.ip); | |
| 2207 if (1 == rv) | |
| 2208 { | |
| 2209 addr->raw.family = PR_AF_INET6; | |
| 2210 return PR_SUCCESS; | |
| 2211 } | |
| 2212 | |
| 2213 PR_ASSERT(0 == rv); | |
| 2214 PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0); | |
| 2215 return PR_FAILURE; | |
| 2216 } | |
| 2217 | |
| 2218 PR_IMPLEMENT(PRStatus) PR_StringToNetAddr(const char *string, PRNetAddr *addr) | |
| 2219 { | |
| 2220 if (!_pr_initialized) _PR_ImplicitInitialization(); | |
| 2221 | |
| 2222 if (!addr || !string || !*string) | |
| 2223 { | |
| 2224 PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0); | |
| 2225 return PR_FAILURE; | |
| 2226 } | |
| 2227 | |
| 2228 #if !defined(_PR_HAVE_GETADDRINFO) | |
| 2229 return pr_StringToNetAddrFB(string, addr); | |
| 2230 #else | |
| 2231 #if defined(_PR_INET6_PROBE) | |
| 2232 if (!_pr_ipv6_is_present()) | |
| 2233 return pr_StringToNetAddrFB(string, addr); | |
| 2234 #endif | |
| 2235 /* | |
| 2236 * getaddrinfo with AI_NUMERICHOST is much slower than pr_inet_aton on some | |
| 2237 * platforms, such as Mac OS X (bug 404399), Linux glibc 2.10 (bug 344809), | |
| 2238 * and most likely others. So we only use it to convert literal IP addresses | |
| 2239 * that contain IPv6 scope IDs, which pr_inet_aton cannot convert. | |
| 2240 */ | |
| 2241 if (!strchr(string, '%')) | |
| 2242 return pr_StringToNetAddrFB(string, addr); | |
| 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 = AF_INET6; | |
| 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 14249009:
Change the NSS and NSPR source tree to the new directory structure to be (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/deps/third_party/nss/