| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * Copyright (c) 2007 The FFmpeg Project | ||
| 3 | * | ||
| 4 | * This file is part of FFmpeg. | ||
| 5 | * | ||
| 6 | * FFmpeg is free software; you can redistribute it and/or | ||
| 7 | * modify it under the terms of the GNU Lesser General Public | ||
| 8 | * License as published by the Free Software Foundation; either | ||
| 9 | * version 2.1 of the License, or (at your option) any later version. | ||
| 10 | * | ||
| 11 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 14 | * Lesser General Public License for more details. | ||
| 15 | * | ||
| 16 | * You should have received a copy of the GNU Lesser General Public | ||
| 17 | * License along with FFmpeg; if not, write to the Free Software | ||
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 19 | */ | ||
| 20 | |||
| 21 | #include "config.h" | ||
| 22 | #include "config_components.h" | ||
| 23 | |||
| 24 | #if CONFIG_TLS_PROTOCOL && CONFIG_OPENSSL | ||
| 25 | #include <openssl/opensslv.h> | ||
| 26 | #endif | ||
| 27 | |||
| 28 | #include <fcntl.h> | ||
| 29 | #include "network.h" | ||
| 30 | #include "tls.h" | ||
| 31 | #include "url.h" | ||
| 32 | #include "libavutil/avassert.h" | ||
| 33 | #include "libavutil/mem.h" | ||
| 34 | #include "libavutil/time.h" | ||
| 35 | |||
| 36 | 6942 | int ff_tls_init(void) | |
| 37 | { | ||
| 38 | #if CONFIG_TLS_PROTOCOL | ||
| 39 | #if CONFIG_OPENSSL && OPENSSL_VERSION_NUMBER < 0x10100000L | ||
| 40 | int ret; | ||
| 41 | if ((ret = ff_openssl_init()) < 0) | ||
| 42 | return ret; | ||
| 43 | #endif | ||
| 44 | #if CONFIG_GNUTLS | ||
| 45 | ff_gnutls_init(); | ||
| 46 | #endif | ||
| 47 | #endif | ||
| 48 | 6942 | return 0; | |
| 49 | } | ||
| 50 | |||
| 51 | 6942 | void ff_tls_deinit(void) | |
| 52 | { | ||
| 53 | #if CONFIG_TLS_PROTOCOL | ||
| 54 | #if CONFIG_OPENSSL && OPENSSL_VERSION_NUMBER < 0x10100000L | ||
| 55 | ff_openssl_deinit(); | ||
| 56 | #endif | ||
| 57 | #if CONFIG_GNUTLS | ||
| 58 | ff_gnutls_deinit(); | ||
| 59 | #endif | ||
| 60 | #endif | ||
| 61 | 6942 | } | |
| 62 | |||
| 63 | 6942 | int ff_network_init(void) | |
| 64 | { | ||
| 65 | #if HAVE_WINSOCK2_H | ||
| 66 | WSADATA wsaData; | ||
| 67 | |||
| 68 | if (WSAStartup(MAKEWORD(1,1), &wsaData)) | ||
| 69 | return 0; | ||
| 70 | #endif | ||
| 71 | 6942 | return 1; | |
| 72 | } | ||
| 73 | |||
| 74 | ✗ | int ff_network_wait_fd(int fd, int write) | |
| 75 | { | ||
| 76 | ✗ | int ev = write ? POLLOUT : POLLIN; | |
| 77 | ✗ | struct pollfd p = { .fd = fd, .events = ev, .revents = 0 }; | |
| 78 | int ret; | ||
| 79 | ✗ | ret = poll(&p, 1, POLLING_TIME); | |
| 80 | ✗ | return ret < 0 ? ff_neterrno() : p.revents & (ev | POLLERR | POLLHUP) ? 0 : AVERROR(EAGAIN); | |
| 81 | } | ||
| 82 | |||
| 83 | ✗ | int ff_network_wait_fd_timeout(int fd, int write, int64_t timeout, AVIOInterruptCB *int_cb) | |
| 84 | { | ||
| 85 | int ret; | ||
| 86 | ✗ | int64_t wait_start = 0; | |
| 87 | |||
| 88 | while (1) { | ||
| 89 | ✗ | if (ff_check_interrupt(int_cb)) | |
| 90 | ✗ | return AVERROR_EXIT; | |
| 91 | ✗ | ret = ff_network_wait_fd(fd, write); | |
| 92 | ✗ | if (ret != AVERROR(EAGAIN)) | |
| 93 | ✗ | return ret; | |
| 94 | ✗ | if (timeout > 0) { | |
| 95 | ✗ | if (!wait_start) | |
| 96 | ✗ | wait_start = av_gettime_relative(); | |
| 97 | ✗ | else if (av_gettime_relative() - wait_start > timeout) | |
| 98 | ✗ | return AVERROR(ETIMEDOUT); | |
| 99 | } | ||
| 100 | } | ||
| 101 | } | ||
| 102 | |||
| 103 | ✗ | int ff_network_sleep_interruptible(int64_t timeout, AVIOInterruptCB *int_cb) | |
| 104 | { | ||
| 105 | ✗ | int64_t wait_start = av_gettime_relative(); | |
| 106 | |||
| 107 | ✗ | while (1) { | |
| 108 | int64_t time_left; | ||
| 109 | |||
| 110 | ✗ | if (ff_check_interrupt(int_cb)) | |
| 111 | ✗ | return AVERROR_EXIT; | |
| 112 | |||
| 113 | ✗ | time_left = timeout - (av_gettime_relative() - wait_start); | |
| 114 | ✗ | if (time_left <= 0) | |
| 115 | ✗ | return AVERROR(ETIMEDOUT); | |
| 116 | |||
| 117 | ✗ | av_usleep(FFMIN(time_left, POLLING_TIME * 1000)); | |
| 118 | } | ||
| 119 | } | ||
| 120 | |||
| 121 | 6942 | void ff_network_close(void) | |
| 122 | { | ||
| 123 | #if HAVE_WINSOCK2_H | ||
| 124 | WSACleanup(); | ||
| 125 | #endif | ||
| 126 | 6942 | } | |
| 127 | |||
| 128 | #if HAVE_WINSOCK2_H | ||
| 129 | int ff_neterrno(void) | ||
| 130 | { | ||
| 131 | int err = WSAGetLastError(); | ||
| 132 | switch (err) { | ||
| 133 | case WSAEWOULDBLOCK: | ||
| 134 | return AVERROR(EAGAIN); | ||
| 135 | case WSAEINTR: | ||
| 136 | return AVERROR(EINTR); | ||
| 137 | case WSAEPROTONOSUPPORT: | ||
| 138 | return AVERROR(EPROTONOSUPPORT); | ||
| 139 | case WSAETIMEDOUT: | ||
| 140 | return AVERROR(ETIMEDOUT); | ||
| 141 | case WSAECONNREFUSED: | ||
| 142 | return AVERROR(ECONNREFUSED); | ||
| 143 | case WSAEINPROGRESS: | ||
| 144 | return AVERROR(EINPROGRESS); | ||
| 145 | } | ||
| 146 | return -err; | ||
| 147 | } | ||
| 148 | #endif | ||
| 149 | |||
| 150 | ✗ | int ff_is_multicast_address(struct sockaddr *addr) | |
| 151 | { | ||
| 152 | ✗ | if (addr->sa_family == AF_INET) { | |
| 153 | ✗ | return IN_MULTICAST(ntohl(((struct sockaddr_in *)addr)->sin_addr.s_addr)); | |
| 154 | } | ||
| 155 | #if HAVE_STRUCT_SOCKADDR_IN6 | ||
| 156 | ✗ | if (addr->sa_family == AF_INET6) { | |
| 157 | ✗ | return IN6_IS_ADDR_MULTICAST(&((struct sockaddr_in6 *)addr)->sin6_addr); | |
| 158 | } | ||
| 159 | #endif | ||
| 160 | |||
| 161 | ✗ | return 0; | |
| 162 | } | ||
| 163 | |||
| 164 | ✗ | static int ff_poll_interrupt(struct pollfd *p, nfds_t nfds, int timeout, | |
| 165 | AVIOInterruptCB *cb) | ||
| 166 | { | ||
| 167 | ✗ | int runs = timeout / POLLING_TIME; | |
| 168 | ✗ | int ret = 0; | |
| 169 | |||
| 170 | do { | ||
| 171 | ✗ | if (ff_check_interrupt(cb)) | |
| 172 | ✗ | return AVERROR_EXIT; | |
| 173 | ✗ | ret = poll(p, nfds, POLLING_TIME); | |
| 174 | ✗ | if (ret != 0) { | |
| 175 | ✗ | if (ret < 0) | |
| 176 | ✗ | ret = ff_neterrno(); | |
| 177 | ✗ | if (ret == AVERROR(EINTR)) | |
| 178 | ✗ | continue; | |
| 179 | ✗ | break; | |
| 180 | } | ||
| 181 | ✗ | } while (timeout <= 0 || runs-- > 0); | |
| 182 | |||
| 183 | ✗ | if (!ret) | |
| 184 | ✗ | return AVERROR(ETIMEDOUT); | |
| 185 | ✗ | return ret; | |
| 186 | } | ||
| 187 | |||
| 188 | ✗ | int ff_socket(int af, int type, int proto, void *logctx) | |
| 189 | { | ||
| 190 | int fd; | ||
| 191 | |||
| 192 | #ifdef SOCK_CLOEXEC | ||
| 193 | ✗ | fd = socket(af, type | SOCK_CLOEXEC, proto); | |
| 194 | ✗ | if (fd == -1 && errno == EINVAL) | |
| 195 | #endif | ||
| 196 | { | ||
| 197 | ✗ | fd = socket(af, type, proto); | |
| 198 | #if HAVE_FCNTL | ||
| 199 | ✗ | if (fd != -1) { | |
| 200 | ✗ | if (fcntl(fd, F_SETFD, FD_CLOEXEC) == -1) | |
| 201 | ✗ | av_log(logctx, AV_LOG_DEBUG, "Failed to set close on exec\n"); | |
| 202 | } | ||
| 203 | #endif | ||
| 204 | } | ||
| 205 | #ifdef SO_NOSIGPIPE | ||
| 206 | if (fd != -1) { | ||
| 207 | if (setsockopt(fd, SOL_SOCKET, SO_NOSIGPIPE, &(int){1}, sizeof(int))) { | ||
| 208 | av_log(logctx, AV_LOG_WARNING, "setsockopt(SO_NOSIGPIPE) failed\n"); | ||
| 209 | } | ||
| 210 | } | ||
| 211 | #endif | ||
| 212 | ✗ | return fd; | |
| 213 | } | ||
| 214 | |||
| 215 | ✗ | int ff_listen(int fd, const struct sockaddr *addr, | |
| 216 | socklen_t addrlen, void *logctx) | ||
| 217 | { | ||
| 218 | int ret; | ||
| 219 | ✗ | int reuse = 1; | |
| 220 | ✗ | if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &reuse, sizeof(reuse))) { | |
| 221 | ✗ | av_log(logctx, AV_LOG_WARNING, "setsockopt(SO_REUSEADDR) failed\n"); | |
| 222 | } | ||
| 223 | ✗ | ret = bind(fd, addr, addrlen); | |
| 224 | ✗ | if (ret) | |
| 225 | ✗ | return ff_neterrno(); | |
| 226 | |||
| 227 | ✗ | ret = listen(fd, 1); | |
| 228 | ✗ | if (ret) | |
| 229 | ✗ | return ff_neterrno(); | |
| 230 | ✗ | return ret; | |
| 231 | } | ||
| 232 | |||
| 233 | ✗ | int ff_accept(int fd, int timeout, URLContext *h) | |
| 234 | { | ||
| 235 | int ret; | ||
| 236 | ✗ | struct pollfd lp = { fd, POLLIN, 0 }; | |
| 237 | |||
| 238 | ✗ | ret = ff_poll_interrupt(&lp, 1, timeout, &h->interrupt_callback); | |
| 239 | ✗ | if (ret < 0) | |
| 240 | ✗ | return ret; | |
| 241 | |||
| 242 | ✗ | ret = accept(fd, NULL, NULL); | |
| 243 | ✗ | if (ret < 0) | |
| 244 | ✗ | return ff_neterrno(); | |
| 245 | ✗ | if (ff_socket_nonblock(ret, 1) < 0) | |
| 246 | ✗ | av_log(h, AV_LOG_DEBUG, "ff_socket_nonblock failed\n"); | |
| 247 | |||
| 248 | ✗ | return ret; | |
| 249 | } | ||
| 250 | |||
| 251 | ✗ | int ff_listen_bind(int fd, const struct sockaddr *addr, | |
| 252 | socklen_t addrlen, int timeout, URLContext *h) | ||
| 253 | { | ||
| 254 | int ret; | ||
| 255 | ✗ | if ((ret = ff_listen(fd, addr, addrlen, h)) < 0) | |
| 256 | ✗ | return ret; | |
| 257 | ✗ | if ((ret = ff_accept(fd, timeout, h)) < 0) | |
| 258 | ✗ | return ret; | |
| 259 | ✗ | closesocket(fd); | |
| 260 | ✗ | return ret; | |
| 261 | } | ||
| 262 | |||
| 263 | ✗ | int ff_listen_connect(int fd, const struct sockaddr *addr, | |
| 264 | socklen_t addrlen, int timeout, URLContext *h, | ||
| 265 | int will_try_next) | ||
| 266 | { | ||
| 267 | ✗ | struct pollfd p = {fd, POLLOUT, 0}; | |
| 268 | int ret; | ||
| 269 | socklen_t optlen; | ||
| 270 | |||
| 271 | ✗ | if (ff_socket_nonblock(fd, 1) < 0) | |
| 272 | ✗ | av_log(h, AV_LOG_DEBUG, "ff_socket_nonblock failed\n"); | |
| 273 | |||
| 274 | ✗ | while ((ret = connect(fd, addr, addrlen))) { | |
| 275 | ✗ | ret = ff_neterrno(); | |
| 276 | ✗ | switch (ret) { | |
| 277 | ✗ | case AVERROR(EINTR): | |
| 278 | ✗ | if (ff_check_interrupt(&h->interrupt_callback)) | |
| 279 | ✗ | return AVERROR_EXIT; | |
| 280 | ✗ | continue; | |
| 281 | ✗ | case AVERROR(EINPROGRESS): | |
| 282 | case AVERROR(EAGAIN): | ||
| 283 | ✗ | ret = ff_poll_interrupt(&p, 1, timeout, &h->interrupt_callback); | |
| 284 | ✗ | if (ret < 0) | |
| 285 | ✗ | return ret; | |
| 286 | ✗ | optlen = sizeof(ret); | |
| 287 | ✗ | if (getsockopt (fd, SOL_SOCKET, SO_ERROR, &ret, &optlen)) | |
| 288 | ✗ | ret = AVUNERROR(ff_neterrno()); | |
| 289 | ✗ | if (ret != 0) { | |
| 290 | char errbuf[100]; | ||
| 291 | ✗ | ret = AVERROR(ret); | |
| 292 | ✗ | av_strerror(ret, errbuf, sizeof(errbuf)); | |
| 293 | ✗ | if (will_try_next) | |
| 294 | ✗ | av_log(h, AV_LOG_WARNING, | |
| 295 | "Connection to %s failed (%s), trying next address\n", | ||
| 296 | h->filename, errbuf); | ||
| 297 | else | ||
| 298 | ✗ | av_log(h, AV_LOG_ERROR, "Connection to %s failed: %s\n", | |
| 299 | h->filename, errbuf); | ||
| 300 | } | ||
| 301 | default: | ||
| 302 | ✗ | return ret; | |
| 303 | } | ||
| 304 | } | ||
| 305 | ✗ | return ret; | |
| 306 | } | ||
| 307 | |||
| 308 | ✗ | static void interleave_addrinfo(struct addrinfo *base) | |
| 309 | { | ||
| 310 | ✗ | struct addrinfo **next = &base->ai_next; | |
| 311 | ✗ | while (*next) { | |
| 312 | ✗ | struct addrinfo *cur = *next; | |
| 313 | // Iterate forward until we find an entry of a different family. | ||
| 314 | ✗ | if (cur->ai_family == base->ai_family) { | |
| 315 | ✗ | next = &cur->ai_next; | |
| 316 | ✗ | continue; | |
| 317 | } | ||
| 318 | ✗ | if (cur == base->ai_next) { | |
| 319 | // If the first one following base is of a different family, just | ||
| 320 | // move base forward one step and continue. | ||
| 321 | ✗ | base = cur; | |
| 322 | ✗ | next = &base->ai_next; | |
| 323 | ✗ | continue; | |
| 324 | } | ||
| 325 | // Unchain cur from the rest of the list from its current spot. | ||
| 326 | ✗ | *next = cur->ai_next; | |
| 327 | // Hook in cur directly after base. | ||
| 328 | ✗ | cur->ai_next = base->ai_next; | |
| 329 | ✗ | base->ai_next = cur; | |
| 330 | // Restart with a new base. We know that before moving the cur element, | ||
| 331 | // everything between the previous base and cur had the same family, | ||
| 332 | // different from cur->ai_family. Therefore, we can keep next pointing | ||
| 333 | // where it was, and continue from there with base at the one after | ||
| 334 | // cur. | ||
| 335 | ✗ | base = cur->ai_next; | |
| 336 | } | ||
| 337 | ✗ | } | |
| 338 | |||
| 339 | ✗ | static void print_address_list(void *ctx, const struct addrinfo *addr, | |
| 340 | const char *title) | ||
| 341 | { | ||
| 342 | char hostbuf[100], portbuf[20]; | ||
| 343 | ✗ | av_log(ctx, AV_LOG_DEBUG, "%s:\n", title); | |
| 344 | ✗ | while (addr) { | |
| 345 | ✗ | getnameinfo(addr->ai_addr, addr->ai_addrlen, | |
| 346 | hostbuf, sizeof(hostbuf), portbuf, sizeof(portbuf), | ||
| 347 | NI_NUMERICHOST | NI_NUMERICSERV); | ||
| 348 | ✗ | av_log(ctx, AV_LOG_DEBUG, "Address %s port %s\n", hostbuf, portbuf); | |
| 349 | ✗ | addr = addr->ai_next; | |
| 350 | } | ||
| 351 | ✗ | } | |
| 352 | |||
| 353 | struct ConnectionAttempt { | ||
| 354 | int fd; | ||
| 355 | int64_t deadline_us; | ||
| 356 | struct addrinfo *addr; | ||
| 357 | }; | ||
| 358 | |||
| 359 | // Returns < 0 on error, 0 on successfully started connection attempt, | ||
| 360 | // > 0 for a connection that succeeded already. | ||
| 361 | ✗ | static int start_connect_attempt(struct ConnectionAttempt *attempt, | |
| 362 | struct addrinfo **ptr, int timeout_ms, | ||
| 363 | URLContext *h, | ||
| 364 | int (*customize_fd)(void *, int, int), void *customize_ctx) | ||
| 365 | { | ||
| 366 | ✗ | struct addrinfo *ai = *ptr; | |
| 367 | int ret; | ||
| 368 | |||
| 369 | ✗ | *ptr = ai->ai_next; | |
| 370 | |||
| 371 | ✗ | attempt->fd = ff_socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol, h); | |
| 372 | ✗ | if (attempt->fd < 0) | |
| 373 | ✗ | return ff_neterrno(); | |
| 374 | ✗ | attempt->deadline_us = av_gettime_relative() + timeout_ms * 1000; | |
| 375 | ✗ | attempt->addr = ai; | |
| 376 | |||
| 377 | ✗ | ff_socket_nonblock(attempt->fd, 1); | |
| 378 | |||
| 379 | ✗ | if (customize_fd) { | |
| 380 | ✗ | ret = customize_fd(customize_ctx, attempt->fd, ai->ai_family); | |
| 381 | ✗ | if (ret) { | |
| 382 | ✗ | closesocket(attempt->fd); | |
| 383 | ✗ | attempt->fd = -1; | |
| 384 | ✗ | return ret; | |
| 385 | } | ||
| 386 | } | ||
| 387 | |||
| 388 | ✗ | while ((ret = connect(attempt->fd, ai->ai_addr, ai->ai_addrlen))) { | |
| 389 | ✗ | ret = ff_neterrno(); | |
| 390 | ✗ | switch (ret) { | |
| 391 | ✗ | case AVERROR(EINTR): | |
| 392 | ✗ | if (ff_check_interrupt(&h->interrupt_callback)) { | |
| 393 | ✗ | closesocket(attempt->fd); | |
| 394 | ✗ | attempt->fd = -1; | |
| 395 | ✗ | return AVERROR_EXIT; | |
| 396 | } | ||
| 397 | ✗ | continue; | |
| 398 | ✗ | case AVERROR(EINPROGRESS): | |
| 399 | case AVERROR(EAGAIN): | ||
| 400 | ✗ | return 0; | |
| 401 | ✗ | default: | |
| 402 | ✗ | closesocket(attempt->fd); | |
| 403 | ✗ | attempt->fd = -1; | |
| 404 | ✗ | return ret; | |
| 405 | } | ||
| 406 | } | ||
| 407 | ✗ | return 1; | |
| 408 | } | ||
| 409 | |||
| 410 | // Try a new connection to another address after 200 ms, as suggested in | ||
| 411 | // RFC 8305 (or sooner if an earlier attempt fails). | ||
| 412 | #define NEXT_ATTEMPT_DELAY_MS 200 | ||
| 413 | |||
| 414 | ✗ | int ff_connect_parallel(struct addrinfo *addrs, int timeout_ms_per_address, | |
| 415 | int parallel, URLContext *h, int *fd, | ||
| 416 | int (*customize_fd)(void *, int, int), void *customize_ctx) | ||
| 417 | { | ||
| 418 | struct ConnectionAttempt attempts[3]; | ||
| 419 | struct pollfd pfd[3]; | ||
| 420 | ✗ | int nb_attempts = 0, i, j; | |
| 421 | ✗ | int64_t next_attempt_us = av_gettime_relative(), next_deadline_us; | |
| 422 | ✗ | int last_err = AVERROR(EIO); | |
| 423 | socklen_t optlen; | ||
| 424 | char errbuf[100], hostbuf[100], portbuf[20]; | ||
| 425 | |||
| 426 | ✗ | if (parallel > FF_ARRAY_ELEMS(attempts)) | |
| 427 | ✗ | parallel = FF_ARRAY_ELEMS(attempts); | |
| 428 | |||
| 429 | ✗ | print_address_list(h, addrs, "Original list of addresses"); | |
| 430 | // This mutates the list, but the head of the list is still the same | ||
| 431 | // element, so the caller, who owns the list, doesn't need to get | ||
| 432 | // an updated pointer. | ||
| 433 | ✗ | interleave_addrinfo(addrs); | |
| 434 | ✗ | print_address_list(h, addrs, "Interleaved list of addresses"); | |
| 435 | |||
| 436 | ✗ | while (nb_attempts > 0 || addrs) { | |
| 437 | // Start a new connection attempt, if possible. | ||
| 438 | ✗ | if (nb_attempts < parallel && addrs) { | |
| 439 | ✗ | getnameinfo(addrs->ai_addr, addrs->ai_addrlen, | |
| 440 | hostbuf, sizeof(hostbuf), portbuf, sizeof(portbuf), | ||
| 441 | NI_NUMERICHOST | NI_NUMERICSERV); | ||
| 442 | ✗ | av_log(h, AV_LOG_VERBOSE, "Starting connection attempt to %s port %s\n", | |
| 443 | hostbuf, portbuf); | ||
| 444 | ✗ | last_err = start_connect_attempt(&attempts[nb_attempts], &addrs, | |
| 445 | timeout_ms_per_address, h, | ||
| 446 | customize_fd, customize_ctx); | ||
| 447 | ✗ | if (last_err < 0) { | |
| 448 | ✗ | av_strerror(last_err, errbuf, sizeof(errbuf)); | |
| 449 | ✗ | av_log(h, AV_LOG_VERBOSE, "Connected attempt failed: %s\n", | |
| 450 | errbuf); | ||
| 451 | ✗ | continue; | |
| 452 | } | ||
| 453 | ✗ | if (last_err > 0) { | |
| 454 | ✗ | for (i = 0; i < nb_attempts; i++) | |
| 455 | ✗ | closesocket(attempts[i].fd); | |
| 456 | ✗ | *fd = attempts[nb_attempts].fd; | |
| 457 | ✗ | return 0; | |
| 458 | } | ||
| 459 | ✗ | pfd[nb_attempts].fd = attempts[nb_attempts].fd; | |
| 460 | ✗ | pfd[nb_attempts].events = POLLOUT; | |
| 461 | ✗ | next_attempt_us = av_gettime_relative() + NEXT_ATTEMPT_DELAY_MS * 1000; | |
| 462 | ✗ | nb_attempts++; | |
| 463 | } | ||
| 464 | |||
| 465 | ✗ | av_assert0(nb_attempts > 0); | |
| 466 | // The connection attempts are sorted from oldest to newest, so the | ||
| 467 | // first one will have the earliest deadline. | ||
| 468 | ✗ | next_deadline_us = attempts[0].deadline_us; | |
| 469 | // If we can start another attempt in parallel, wait until that time. | ||
| 470 | ✗ | if (nb_attempts < parallel && addrs) | |
| 471 | ✗ | next_deadline_us = FFMIN(next_deadline_us, next_attempt_us); | |
| 472 | ✗ | last_err = ff_poll_interrupt(pfd, nb_attempts, | |
| 473 | ✗ | (next_deadline_us - av_gettime_relative())/1000, | |
| 474 | &h->interrupt_callback); | ||
| 475 | ✗ | if (last_err < 0 && last_err != AVERROR(ETIMEDOUT)) | |
| 476 | ✗ | break; | |
| 477 | |||
| 478 | // Check the status from the poll output. | ||
| 479 | ✗ | for (i = 0; i < nb_attempts; i++) { | |
| 480 | ✗ | last_err = 0; | |
| 481 | ✗ | if (pfd[i].revents) { | |
| 482 | // Some sort of action for this socket, check its status (either | ||
| 483 | // a successful connection or an error). | ||
| 484 | ✗ | optlen = sizeof(last_err); | |
| 485 | ✗ | if (getsockopt(attempts[i].fd, SOL_SOCKET, SO_ERROR, &last_err, &optlen)) | |
| 486 | ✗ | last_err = ff_neterrno(); | |
| 487 | ✗ | else if (last_err != 0) | |
| 488 | ✗ | last_err = AVERROR(last_err); | |
| 489 | ✗ | if (last_err == 0) { | |
| 490 | // Everything is ok, we seem to have a successful | ||
| 491 | // connection. Close other sockets and return this one. | ||
| 492 | ✗ | for (j = 0; j < nb_attempts; j++) | |
| 493 | ✗ | if (j != i) | |
| 494 | ✗ | closesocket(attempts[j].fd); | |
| 495 | ✗ | *fd = attempts[i].fd; | |
| 496 | ✗ | getnameinfo(attempts[i].addr->ai_addr, attempts[i].addr->ai_addrlen, | |
| 497 | hostbuf, sizeof(hostbuf), portbuf, sizeof(portbuf), | ||
| 498 | NI_NUMERICHOST | NI_NUMERICSERV); | ||
| 499 | ✗ | av_log(h, AV_LOG_VERBOSE, "Successfully connected to %s port %s\n", | |
| 500 | hostbuf, portbuf); | ||
| 501 | ✗ | return 0; | |
| 502 | } | ||
| 503 | } | ||
| 504 | ✗ | if (attempts[i].deadline_us < av_gettime_relative() && !last_err) | |
| 505 | ✗ | last_err = AVERROR(ETIMEDOUT); | |
| 506 | ✗ | if (!last_err) | |
| 507 | ✗ | continue; | |
| 508 | // Error (or timeout) for this socket; close the socket and remove | ||
| 509 | // it from the attempts/pfd arrays, to let a new attempt start | ||
| 510 | // directly. | ||
| 511 | ✗ | getnameinfo(attempts[i].addr->ai_addr, attempts[i].addr->ai_addrlen, | |
| 512 | hostbuf, sizeof(hostbuf), portbuf, sizeof(portbuf), | ||
| 513 | NI_NUMERICHOST | NI_NUMERICSERV); | ||
| 514 | ✗ | av_strerror(last_err, errbuf, sizeof(errbuf)); | |
| 515 | ✗ | av_log(h, AV_LOG_VERBOSE, "Connection attempt to %s port %s " | |
| 516 | "failed: %s\n", hostbuf, portbuf, errbuf); | ||
| 517 | ✗ | closesocket(attempts[i].fd); | |
| 518 | ✗ | memmove(&attempts[i], &attempts[i + 1], | |
| 519 | ✗ | (nb_attempts - i - 1) * sizeof(*attempts)); | |
| 520 | ✗ | memmove(&pfd[i], &pfd[i + 1], | |
| 521 | ✗ | (nb_attempts - i - 1) * sizeof(*pfd)); | |
| 522 | ✗ | i--; | |
| 523 | ✗ | nb_attempts--; | |
| 524 | } | ||
| 525 | } | ||
| 526 | ✗ | for (i = 0; i < nb_attempts; i++) | |
| 527 | ✗ | closesocket(attempts[i].fd); | |
| 528 | ✗ | if (last_err >= 0) | |
| 529 | ✗ | last_err = AVERROR(ECONNREFUSED); | |
| 530 | ✗ | if (last_err != AVERROR_EXIT) { | |
| 531 | ✗ | av_strerror(last_err, errbuf, sizeof(errbuf)); | |
| 532 | ✗ | av_log(h, AV_LOG_ERROR, "Connection to %s failed: %s\n", | |
| 533 | h->filename, errbuf); | ||
| 534 | } | ||
| 535 | ✗ | return last_err; | |
| 536 | } | ||
| 537 | |||
| 538 | 15 | static int match_host_pattern(const char *pattern, const char *hostname) | |
| 539 | { | ||
| 540 | int len_p, len_h; | ||
| 541 |
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15 | if (!strcmp(pattern, "*")) |
| 542 | 1 | return 1; | |
| 543 | // Skip a possible *. at the start of the pattern | ||
| 544 |
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14 | if (pattern[0] == '*') |
| 545 | 2 | pattern++; | |
| 546 |
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14 | if (pattern[0] == '.') |
| 547 | 3 | pattern++; | |
| 548 | 14 | len_p = strlen(pattern); | |
| 549 | 14 | len_h = strlen(hostname); | |
| 550 |
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14 | if (len_p > len_h) |
| 551 | 5 | return 0; | |
| 552 | // Simply check if the end of hostname is equal to 'pattern' | ||
| 553 |
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9 | if (!strcmp(pattern, &hostname[len_h - len_p])) { |
| 554 |
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6 | if (len_h == len_p) |
| 555 | 4 | return 1; // Exact match | |
| 556 |
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2 | if (hostname[len_h - len_p - 1] == '.') |
| 557 | 1 | return 1; // The matched substring is a domain and not just a substring of a domain | |
| 558 | } | ||
| 559 | 4 | return 0; | |
| 560 | } | ||
| 561 | |||
| 562 | 9 | int ff_http_match_no_proxy(const char *no_proxy, const char *hostname) | |
| 563 | { | ||
| 564 | char *buf, *start; | ||
| 565 | 9 | int ret = 0; | |
| 566 |
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9 | if (!no_proxy) |
| 567 | 1 | return 0; | |
| 568 |
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8 | if (!hostname) |
| 569 | ✗ | return 0; | |
| 570 | 8 | buf = av_strdup(no_proxy); | |
| 571 |
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8 | if (!buf) |
| 572 | ✗ | return 0; | |
| 573 | 8 | start = buf; | |
| 574 |
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17 | while (start) { |
| 575 | 15 | char *sep, *next = NULL; | |
| 576 | 15 | start += strspn(start, " ,"); | |
| 577 | 15 | sep = start + strcspn(start, " ,"); | |
| 578 |
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15 | if (*sep) { |
| 579 | 7 | next = sep + 1; | |
| 580 | 7 | *sep = '\0'; | |
| 581 | } | ||
| 582 |
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15 | if (match_host_pattern(start, hostname)) { |
| 583 | 6 | ret = 1; | |
| 584 | 6 | break; | |
| 585 | } | ||
| 586 | 9 | start = next; | |
| 587 | } | ||
| 588 | 8 | av_free(buf); | |
| 589 | 8 | return ret; | |
| 590 | } | ||
| 591 | |||
| 592 | ✗ | void ff_log_net_error(void *ctx, int level, const char* prefix) | |
| 593 | { | ||
| 594 | char errbuf[100]; | ||
| 595 | ✗ | av_strerror(ff_neterrno(), errbuf, sizeof(errbuf)); | |
| 596 | ✗ | av_log(ctx, level, "%s: %s\n", prefix, errbuf); | |
| 597 | ✗ | } | |
| 598 |