diff options
Diffstat (limited to 'libavformat/http.c')
| -rw-r--r-- | libavformat/http.c | 658 |
1 files changed, 580 insertions, 78 deletions
diff --git a/libavformat/http.c b/libavformat/http.c index 48303908b5..814ca014ce 100644 --- a/libavformat/http.c +++ b/libavformat/http.c @@ -1,21 +1,21 @@ /* - * HTTP protocol for avconv client + * HTTP protocol for ffmpeg client * Copyright (c) 2000, 2001 Fabrice Bellard * - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * - * Libav is distributed in the hope that it will be useful, + * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public - * License along with Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -25,8 +25,10 @@ #include <zlib.h> #endif /* CONFIG_ZLIB */ +#include "libavutil/avassert.h" #include "libavutil/avstring.h" #include "libavutil/opt.h" +#include "libavutil/time.h" #include "avformat.h" #include "http.h" @@ -36,7 +38,7 @@ #include "os_support.h" #include "url.h" -/* XXX: POST protocol is not completely implemented because avconv uses +/* XXX: POST protocol is not completely implemented because ffmpeg uses * only a subset of it. */ /* The IO buffer size is unrelated to the max URL size in itself, but needs @@ -44,6 +46,14 @@ * path names). */ #define BUFFER_SIZE MAX_URL_SIZE #define MAX_REDIRECTS 8 +#define HTTP_SINGLE 1 +#define HTTP_MUTLI 2 +typedef enum { + LOWER_PROTO, + READ_HEADERS, + WRITE_REPLY_HEADERS, + FINISH +}HandshakeState; typedef struct HTTPContext { const AVClass *class; @@ -57,6 +67,7 @@ typedef struct HTTPContext { char *location; HTTPAuthState auth_state; HTTPAuthState proxy_auth_state; + char *http_proxy; char *headers; char *mime_type; char *user_agent; @@ -64,6 +75,7 @@ typedef struct HTTPContext { /* Set if the server correctly handles Connection: close and will close * the connection after feeding us the content. */ int willclose; + int seekable; /**< Control seekability, 0 = disable, 1 = enable, -1 = probe. */ int chunked_post; /* A flag which indicates if the end of chunked encoding has been sent. */ int end_chunked_post; @@ -73,6 +85,11 @@ typedef struct HTTPContext { int multiple_requests; uint8_t *post_data; int post_datalen; + int is_akamai; + int is_mediagateway; + char *cookies; ///< holds newline (\n) delimited Set-Cookie header field values (without the "Set-Cookie: " field name) + /* A dictionary containing cookies keyed by cookie name */ + AVDictionary *cookie_dict; int icy; /* how much data was read since the last ICY metadata packet */ int icy_data_read; @@ -89,6 +106,17 @@ typedef struct HTTPContext { AVDictionary *chained_options; int send_expect_100; char *method; + int reconnect; + int reconnect_at_eof; + int reconnect_streamed; + int reconnect_delay; + int reconnect_delay_max; + int listen; + char *resource; + int reply_code; + int is_multi_client; + HandshakeState handshake_step; + int is_connected_server; } HTTPContext; #define OFFSET(x) offsetof(HTTPContext, x) @@ -97,32 +125,43 @@ typedef struct HTTPContext { #define DEFAULT_USER_AGENT "Lavf/" AV_STRINGIFY(LIBAVFORMAT_VERSION) static const AVOption options[] = { - { "chunked_post", "use chunked transfer-encoding for posts", OFFSET(chunked_post), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, E }, - { "headers", "set custom HTTP headers, can override built in default headers", OFFSET(headers), AV_OPT_TYPE_STRING, { 0 }, 0, 0, D | E }, - { "content_type", "set a specific content type for the POST messages", OFFSET(content_type), AV_OPT_TYPE_STRING, { 0 }, 0, 0, D | E }, + { "seekable", "control seekability of connection", OFFSET(seekable), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, D }, + { "chunked_post", "use chunked transfer-encoding for posts", OFFSET(chunked_post), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E }, + { "http_proxy", "set HTTP proxy to tunnel through", OFFSET(http_proxy), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D | E }, + { "headers", "set custom HTTP headers, can override built in default headers", OFFSET(headers), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D | E }, + { "content_type", "set a specific content type for the POST messages", OFFSET(content_type), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D | E }, { "user_agent", "override User-Agent header", OFFSET(user_agent), AV_OPT_TYPE_STRING, { .str = DEFAULT_USER_AGENT }, 0, 0, D }, - { "user-agent", "override User-Agent header, for compatibility with ffmpeg", OFFSET(user_agent), AV_OPT_TYPE_STRING, { .str = DEFAULT_USER_AGENT }, 0, 0, D }, - { "multiple_requests", "use persistent connections", OFFSET(multiple_requests), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, D | E }, + { "user-agent", "override User-Agent header", OFFSET(user_agent), AV_OPT_TYPE_STRING, { .str = DEFAULT_USER_AGENT }, 0, 0, D }, + { "multiple_requests", "use persistent connections", OFFSET(multiple_requests), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, D | E }, { "post_data", "set custom HTTP post data", OFFSET(post_data), AV_OPT_TYPE_BINARY, .flags = D | E }, - { "mime_type", "export the MIME type", OFFSET(mime_type), AV_OPT_TYPE_STRING, { 0 }, 0, 0, AV_OPT_FLAG_EXPORT | AV_OPT_FLAG_READONLY }, - { "icy", "request ICY metadata", OFFSET(icy), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, D }, - { "icy_metadata_headers", "return ICY metadata headers", OFFSET(icy_metadata_headers), AV_OPT_TYPE_STRING, { 0 }, 0, 0, AV_OPT_FLAG_EXPORT }, - { "icy_metadata_packet", "return current ICY metadata packet", OFFSET(icy_metadata_packet), AV_OPT_TYPE_STRING, { 0 }, 0, 0, AV_OPT_FLAG_EXPORT }, + { "mime_type", "export the MIME type", OFFSET(mime_type), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, AV_OPT_FLAG_EXPORT | AV_OPT_FLAG_READONLY }, + { "cookies", "set cookies to be sent in applicable future requests, use newline delimited Set-Cookie HTTP field value syntax", OFFSET(cookies), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D }, + { "icy", "request ICY metadata", OFFSET(icy), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, D }, + { "icy_metadata_headers", "return ICY metadata headers", OFFSET(icy_metadata_headers), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, AV_OPT_FLAG_EXPORT }, + { "icy_metadata_packet", "return current ICY metadata packet", OFFSET(icy_metadata_packet), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, AV_OPT_FLAG_EXPORT }, { "metadata", "metadata read from the bitstream", OFFSET(metadata), AV_OPT_TYPE_DICT, {0}, 0, 0, AV_OPT_FLAG_EXPORT }, { "auth_type", "HTTP authentication type", OFFSET(auth_state.auth_type), AV_OPT_TYPE_INT, { .i64 = HTTP_AUTH_NONE }, HTTP_AUTH_NONE, HTTP_AUTH_BASIC, D | E, "auth_type"}, { "none", "No auth method set, autodetect", 0, AV_OPT_TYPE_CONST, { .i64 = HTTP_AUTH_NONE }, 0, 0, D | E, "auth_type"}, { "basic", "HTTP basic authentication", 0, AV_OPT_TYPE_CONST, { .i64 = HTTP_AUTH_BASIC }, 0, 0, D | E, "auth_type"}, - { "send_expect_100", "Force sending an Expect: 100-continue header for POST", OFFSET(send_expect_100), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, E }, - { "location", "The actual location of the data received", OFFSET(location), AV_OPT_TYPE_STRING, { 0 }, 0, 0, D | E }, + { "send_expect_100", "Force sending an Expect: 100-continue header for POST", OFFSET(send_expect_100), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E }, + { "location", "The actual location of the data received", OFFSET(location), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D | E }, { "offset", "initial byte offset", OFFSET(off), AV_OPT_TYPE_INT64, { .i64 = 0 }, 0, INT64_MAX, D }, { "end_offset", "try to limit the request to bytes preceding this offset", OFFSET(end_off), AV_OPT_TYPE_INT64, { .i64 = 0 }, 0, INT64_MAX, D }, - { "method", "Override the HTTP method", OFFSET(method), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E }, + { "method", "Override the HTTP method or set the expected HTTP method from a client", OFFSET(method), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D | E }, + { "reconnect", "auto reconnect after disconnect before EOF", OFFSET(reconnect), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, D }, + { "reconnect_at_eof", "auto reconnect at EOF", OFFSET(reconnect_at_eof), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, D }, + { "reconnect_streamed", "auto reconnect streamed / non seekable streams", OFFSET(reconnect_streamed), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, D }, + { "reconnect_delay_max", "max reconnect delay in seconds after which to give up", OFFSET(reconnect_delay_max), AV_OPT_TYPE_INT, { .i64 = 120 }, 0, UINT_MAX/1000/1000, D }, + { "listen", "listen on HTTP", OFFSET(listen), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 2, D | E }, + { "resource", "The resource requested by a client", OFFSET(resource), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E }, + { "reply_code", "The http status code to return to a client", OFFSET(reply_code), AV_OPT_TYPE_INT, { .i64 = 200}, INT_MIN, 599, E}, { NULL } }; static int http_connect(URLContext *h, const char *path, const char *local_path, const char *hoststr, const char *auth, const char *proxyauth, int *new_location); +static int http_read_header(URLContext *h, int *new_location); void ff_http_init_auth_state(URLContext *dest, const URLContext *src) { @@ -149,7 +188,7 @@ static int http_open_cnx_internal(URLContext *h, AVDictionary **options) path1, sizeof(path1), s->location); ff_url_join(hoststr, sizeof(hoststr), NULL, NULL, hostname, port, NULL); - proxy_path = getenv("http_proxy"); + proxy_path = s->http_proxy ? s->http_proxy : getenv("http_proxy"); use_proxy = !ff_http_match_no_proxy(getenv("no_proxy"), hostname) && proxy_path && av_strstart(proxy_path, "http://", NULL); @@ -180,8 +219,9 @@ static int http_open_cnx_internal(URLContext *h, AVDictionary **options) ff_url_join(buf, sizeof(buf), lower_proto, NULL, hostname, port, NULL); if (!s->hd) { - err = ffurl_open(&s->hd, buf, AVIO_FLAG_READ_WRITE, - &h->interrupt_callback, options, h->protocols); + err = ffurl_open_whitelist(&s->hd, buf, AVIO_FLAG_READ_WRITE, + &h->interrupt_callback, options, + h->protocol_whitelist, h->protocol_blacklist); if (err < 0) return err; } @@ -201,6 +241,8 @@ static int http_open_cnx(URLContext *h, AVDictionary **options) HTTPContext *s = h->priv_data; int location_changed, attempts = 0, redirects = 0; redo: + av_dict_copy(options, s->chained_options, 0); + cur_auth_type = s->auth_state.auth_type; cur_proxy_auth_type = s->auth_state.auth_type; @@ -212,8 +254,7 @@ redo: if (s->http_code == 401) { if ((cur_auth_type == HTTP_AUTH_NONE || s->auth_state.stale) && s->auth_state.auth_type != HTTP_AUTH_NONE && attempts < 4) { - ffurl_close(s->hd); - s->hd = NULL; + ffurl_closep(&s->hd); goto redo; } else goto fail; @@ -221,8 +262,7 @@ redo: if (s->http_code == 407) { if ((cur_proxy_auth_type == HTTP_AUTH_NONE || s->proxy_auth_state.stale) && s->proxy_auth_state.auth_type != HTTP_AUTH_NONE && attempts < 4) { - ffurl_close(s->hd); - s->hd = NULL; + ffurl_closep(&s->hd); goto redo; } else goto fail; @@ -231,8 +271,7 @@ redo: s->http_code == 303 || s->http_code == 307) && location_changed == 1) { /* url moved, get next */ - ffurl_close(s->hd); - s->hd = NULL; + ffurl_closep(&s->hd); if (redirects++ >= MAX_REDIRECTS) return AVERROR(EIO); /* Restart the authentication process with the new target, which @@ -246,9 +285,10 @@ redo: fail: if (s->hd) - ffurl_close(s->hd); - s->hd = NULL; - return AVERROR(EIO); + ffurl_closep(&s->hd); + if (location_changed < 0) + return location_changed; + return ff_http_averror(s->http_code, AVERROR(EIO)); } int ff_http_do_new_request(URLContext *h, const char *uri) @@ -264,19 +304,181 @@ int ff_http_do_new_request(URLContext *h, const char *uri) if (!s->location) return AVERROR(ENOMEM); - av_dict_copy(&options, s->chained_options, 0); ret = http_open_cnx(h, &options); av_dict_free(&options); return ret; } +int ff_http_averror(int status_code, int default_averror) +{ + switch (status_code) { + case 400: return AVERROR_HTTP_BAD_REQUEST; + case 401: return AVERROR_HTTP_UNAUTHORIZED; + case 403: return AVERROR_HTTP_FORBIDDEN; + case 404: return AVERROR_HTTP_NOT_FOUND; + default: break; + } + if (status_code >= 400 && status_code <= 499) + return AVERROR_HTTP_OTHER_4XX; + else if (status_code >= 500) + return AVERROR_HTTP_SERVER_ERROR; + else + return default_averror; +} + +static int http_write_reply(URLContext* h, int status_code) +{ + int ret, body = 0, reply_code, message_len; + const char *reply_text, *content_type; + HTTPContext *s = h->priv_data; + char message[BUFFER_SIZE]; + content_type = "text/plain"; + + if (status_code < 0) + body = 1; + switch (status_code) { + case AVERROR_HTTP_BAD_REQUEST: + case 400: + reply_code = 400; + reply_text = "Bad Request"; + break; + case AVERROR_HTTP_FORBIDDEN: + case 403: + reply_code = 403; + reply_text = "Forbidden"; + break; + case AVERROR_HTTP_NOT_FOUND: + case 404: + reply_code = 404; + reply_text = "Not Found"; + break; + case 200: + reply_code = 200; + reply_text = "OK"; + content_type = "application/octet-stream"; + break; + case AVERROR_HTTP_SERVER_ERROR: + case 500: + reply_code = 500; + reply_text = "Internal server error"; + break; + default: + return AVERROR(EINVAL); + } + if (body) { + s->chunked_post = 0; + message_len = snprintf(message, sizeof(message), + "HTTP/1.1 %03d %s\r\n" + "Content-Type: %s\r\n" + "Content-Length: %"SIZE_SPECIFIER"\r\n" + "\r\n" + "%03d %s\r\n", + reply_code, + reply_text, + content_type, + strlen(reply_text) + 6, // 3 digit status code + space + \r\n + reply_code, + reply_text); + } else { + s->chunked_post = 1; + message_len = snprintf(message, sizeof(message), + "HTTP/1.1 %03d %s\r\n" + "Content-Type: %s\r\n" + "Transfer-Encoding: chunked\r\n" + "\r\n", + reply_code, + reply_text, + content_type); + } + av_log(h, AV_LOG_TRACE, "HTTP reply header: \n%s----\n", message); + if ((ret = ffurl_write(s->hd, message, message_len)) < 0) + return ret; + return 0; +} + +static void handle_http_errors(URLContext *h, int error) +{ + av_assert0(error < 0); + http_write_reply(h, error); +} + +static int http_handshake(URLContext *c) +{ + int ret, err, new_location; + HTTPContext *ch = c->priv_data; + URLContext *cl = ch->hd; + switch (ch->handshake_step) { + case LOWER_PROTO: + av_log(c, AV_LOG_TRACE, "Lower protocol\n"); + if ((ret = ffurl_handshake(cl)) > 0) + return 2 + ret; + if (ret < 0) + return ret; + ch->handshake_step = READ_HEADERS; + ch->is_connected_server = 1; + return 2; + case READ_HEADERS: + av_log(c, AV_LOG_TRACE, "Read headers\n"); + if ((err = http_read_header(c, &new_location)) < 0) { + handle_http_errors(c, err); + return err; + } + ch->handshake_step = WRITE_REPLY_HEADERS; + return 1; + case WRITE_REPLY_HEADERS: + av_log(c, AV_LOG_TRACE, "Reply code: %d\n", ch->reply_code); + if ((err = http_write_reply(c, ch->reply_code)) < 0) + return err; + ch->handshake_step = FINISH; + return 1; + case FINISH: + return 0; + } + // this should never be reached. + return AVERROR(EINVAL); +} + +static int http_listen(URLContext *h, const char *uri, int flags, + AVDictionary **options) { + HTTPContext *s = h->priv_data; + int ret; + char hostname[1024], proto[10]; + char lower_url[100]; + const char *lower_proto = "tcp"; + int port; + av_url_split(proto, sizeof(proto), NULL, 0, hostname, sizeof(hostname), &port, + NULL, 0, uri); + if (!strcmp(proto, "https")) + lower_proto = "tls"; + ff_url_join(lower_url, sizeof(lower_url), lower_proto, NULL, hostname, port, + NULL); + if ((ret = av_dict_set_int(options, "listen", s->listen, 0)) < 0) + goto fail; + if ((ret = ffurl_open_whitelist(&s->hd, lower_url, AVIO_FLAG_READ_WRITE, + &h->interrupt_callback, options, + h->protocol_whitelist, h->protocol_blacklist + )) < 0) + goto fail; + s->handshake_step = LOWER_PROTO; + if (s->listen == HTTP_SINGLE) { /* single client */ + s->reply_code = 200; + while ((ret = http_handshake(h)) > 0); + } +fail: + av_dict_free(&s->chained_options); + return ret; +} + static int http_open(URLContext *h, const char *uri, int flags, AVDictionary **options) { HTTPContext *s = h->priv_data; int ret; - h->is_streamed = 1; + if( s->seekable == 1 ) + h->is_streamed = 0; + else + h->is_streamed = 1; s->filesize = -1; s->location = av_strdup(uri); @@ -299,12 +501,35 @@ static int http_open(URLContext *h, const char *uri, int flags, } } + if (s->listen) { + return http_listen(h, uri, flags, options); + } ret = http_open_cnx(h, options); if (ret < 0) av_dict_free(&s->chained_options); return ret; } +static int http_accept(URLContext *s, URLContext **c) +{ + int ret; + HTTPContext *sc = s->priv_data; + HTTPContext *cc; + URLContext *sl = sc->hd; + URLContext *cl = NULL; + + av_assert0(sc->listen); + if ((ret = ffurl_alloc(c, s->filename, s->flags, &sl->interrupt_callback)) < 0) + goto fail; + cc = (*c)->priv_data; + if ((ret = ffurl_accept(sl, &cl)) < 0) + goto fail; + cc->hd = cl; + cc->is_multi_client = 1; +fail: + return ret; +} + static int http_getc(HTTPContext *s) { int len; @@ -356,7 +581,7 @@ static int check_http_code(URLContext *h, int http_code, const char *end) (http_code != 407 || s->proxy_auth_state.auth_type != HTTP_AUTH_NONE)) { end += strspn(end, SPACE_CHARS); av_log(h, AV_LOG_WARNING, "HTTP error %d %s\n", http_code, end); - return AVERROR(EIO); + return ff_http_averror(http_code, AVERROR(EIO)); } return 0; } @@ -386,7 +611,8 @@ static void parse_content_range(URLContext *h, const char *p) if ((slash = strchr(p, '/')) && strlen(slash) > 0) s->filesize = strtoll(slash + 1, NULL, 10); } - h->is_streamed = 0; /* we _can_ in fact seek */ + if (s->seekable == -1 && (!s->is_akamai || s->filesize != 2147483647)) + h->is_streamed = 0; /* we _can_ in fact seek */ } static int parse_content_encoding(URLContext *h, const char *p) @@ -418,7 +644,6 @@ static int parse_content_encoding(URLContext *h, const char *p) // the header at all if this is the case). } else { av_log(h, AV_LOG_WARNING, "Unknown content coding: %s\n", p); - return AVERROR(ENOSYS); } return 0; } @@ -446,11 +671,49 @@ static int parse_icy(HTTPContext *s, const char *tag, const char *p) return 0; } +static int parse_cookie(HTTPContext *s, const char *p, AVDictionary **cookies) +{ + char *eql, *name; + + // duplicate the cookie name (dict will dupe the value) + if (!(eql = strchr(p, '='))) return AVERROR(EINVAL); + if (!(name = av_strndup(p, eql - p))) return AVERROR(ENOMEM); + + // add the cookie to the dictionary + av_dict_set(cookies, name, eql, AV_DICT_DONT_STRDUP_KEY); + + return 0; +} + +static int cookie_string(AVDictionary *dict, char **cookies) +{ + AVDictionaryEntry *e = NULL; + int len = 1; + + // determine how much memory is needed for the cookies string + while (e = av_dict_get(dict, "", e, AV_DICT_IGNORE_SUFFIX)) + len += strlen(e->key) + strlen(e->value) + 1; + + // reallocate the cookies + e = NULL; + if (*cookies) av_free(*cookies); + *cookies = av_malloc(len); + if (!*cookies) return AVERROR(ENOMEM); + *cookies[0] = '\0'; + + // write out the cookies + while (e = av_dict_get(dict, "", e, AV_DICT_IGNORE_SUFFIX)) + av_strlcatf(*cookies, len, "%s%s\n", e->key, e->value); + + return 0; +} + static int process_line(URLContext *h, char *line, int line_count, int *new_location) { HTTPContext *s = h->priv_data; - char *tag, *p, *end; + const char *auto_method = h->flags & AVIO_FLAG_READ ? "POST" : "GET"; + char *tag, *p, *end, *method, *resource, *version; int ret; /* end of header */ @@ -461,16 +724,66 @@ static int process_line(URLContext *h, char *line, int line_count, p = line; if (line_count == 0) { - while (!av_isspace(*p) && *p != '\0') - p++; - while (av_isspace(*p)) - p++; - s->http_code = strtol(p, &end, 10); + if (s->is_connected_server) { + // HTTP method + method = p; + while (*p && !av_isspace(*p)) + p++; + *(p++) = '\0'; + av_log(h, AV_LOG_TRACE, "Received method: %s\n", method); + if (s->method) { + if (av_strcasecmp(s->method, method)) { + av_log(h, AV_LOG_ERROR, "Received and expected HTTP method do not match. (%s expected, %s received)\n", + s->method, method); + return ff_http_averror(400, AVERROR(EIO)); + } + } else { + // use autodetected HTTP method to expect + av_log(h, AV_LOG_TRACE, "Autodetected %s HTTP method\n", auto_method); + if (av_strcasecmp(auto_method, method)) { + av_log(h, AV_LOG_ERROR, "Received and autodetected HTTP method did not match " + "(%s autodetected %s received)\n", auto_method, method); + return ff_http_averror(400, AVERROR(EIO)); + } + if (!(s->method = av_strdup(method))) + return AVERROR(ENOMEM); + } - av_log(NULL, AV_LOG_TRACE, "http_code=%d\n", s->http_code); + // HTTP resource + while (av_isspace(*p)) + p++; + resource = p; + while (!av_isspace(*p)) + p++; + *(p++) = '\0'; + av_log(h, AV_LOG_TRACE, "Requested resource: %s\n", resource); + if (!(s->resource = av_strdup(resource))) + return AVERROR(ENOMEM); + + // HTTP version + while (av_isspace(*p)) + p++; + version = p; + while (*p && !av_isspace(*p)) + p++; + *p = '\0'; + if (av_strncasecmp(version, "HTTP/", 5)) { + av_log(h, AV_LOG_ERROR, "Malformed HTTP version string.\n"); + return ff_http_averror(400, AVERROR(EIO)); + } + av_log(h, AV_LOG_TRACE, "HTTP version string: %s\n", version); + } else { + while (!av_isspace(*p) && *p != '\0') + p++; + while (av_isspace(*p)) + p++; + s->http_code = strtol(p, &end, 10); - if ((ret = check_http_code(h, s->http_code, end)) < 0) - return ret; + av_log(h, AV_LOG_TRACE, "http_code=%d\n", s->http_code); + + if ((ret = check_http_code(h, s->http_code, end)) < 0) + return ret; + } } else { while (*p != '\0' && *p != ':') p++; @@ -491,7 +804,8 @@ static int process_line(URLContext *h, char *line, int line_count, } else if (!av_strcasecmp(tag, "Content-Range")) { parse_content_range(h, p); } else if (!av_strcasecmp(tag, "Accept-Ranges") && - !strncmp(p, "bytes", 5)) { + !strncmp(p, "bytes", 5) && + s->seekable == -1) { h->is_streamed = 0; } else if (!av_strcasecmp(tag, "Transfer-Encoding") && !av_strncasecmp(p, "chunked", 7)) { @@ -506,9 +820,18 @@ static int process_line(URLContext *h, char *line, int line_count, } else if (!av_strcasecmp(tag, "Connection")) { if (!strcmp(p, "close")) s->willclose = 1; + } else if (!av_strcasecmp(tag, "Server")) { + if (!av_strcasecmp(p, "AkamaiGHost")) { + s->is_akamai = 1; + } else if (!av_strncasecmp(p, "MediaGateway", 12)) { + s->is_mediagateway = 1; + } } else if (!av_strcasecmp(tag, "Content-Type")) { av_free(s->mime_type); s->mime_type = av_strdup(p); + } else if (!av_strcasecmp(tag, "Set-Cookie")) { + if (parse_cookie(s, p, &s->cookie_dict)) + av_log(h, AV_LOG_WARNING, "Unable to parse '%s'\n", p); } else if (!av_strcasecmp(tag, "Icy-MetaInt")) { s->icy_metaint = strtoll(p, NULL, 10); } else if (!av_strncasecmp(tag, "Icy-", 4)) { @@ -522,6 +845,110 @@ static int process_line(URLContext *h, char *line, int line_count, return 1; } +/** + * Create a string containing cookie values for use as a HTTP cookie header + * field value for a particular path and domain from the cookie values stored in + * the HTTP protocol context. The cookie string is stored in *cookies. + * + * @return a negative value if an error condition occurred, 0 otherwise + */ +static int get_cookies(HTTPContext *s, char **cookies, const char *path, + const char *domain) +{ + // cookie strings will look like Set-Cookie header field values. Multiple + // Set-Cookie fields will result in multiple values delimited by a newline + int ret = 0; + char *next, *cookie, *set_cookies = av_strdup(s->cookies), *cset_cookies = set_cookies; + + if (!set_cookies) return AVERROR(EINVAL); + + // destroy any cookies in the dictionary. + av_dict_free(&s->cookie_dict); + + *cookies = NULL; + while ((cookie = av_strtok(set_cookies, "\n", &next))) { + int domain_offset = 0; + char *param, *next_param, *cdomain = NULL, *cpath = NULL, *cvalue = NULL; + set_cookies = NULL; + + // store the cookie in a dict in case it is updated in the response + if (parse_cookie(s, cookie, &s->cookie_dict)) + av_log(s, AV_LOG_WARNING, "Unable to parse '%s'\n", cookie); + + while ((param = av_strtok(cookie, "; ", &next_param))) { + if (cookie) { + // first key-value pair is the actual cookie value + cvalue = av_strdup(param); + cookie = NULL; + } else if (!av_strncasecmp("path=", param, 5)) { + av_free(cpath); + cpath = av_strdup(¶m[5]); + } else if (!av_strncasecmp("domain=", param, 7)) { + // if the cookie specifies a sub-domain, skip the leading dot thereby + // supporting URLs that point to sub-domains and the master domain + int leading_dot = (param[7] == '.'); + av_free(cdomain); + cdomain = av_strdup(¶m[7+leading_dot]); + } else { + // ignore unknown attributes + } + } + if (!cdomain) + cdomain = av_strdup(domain); + + // ensure all of the necessary values are valid + if (!cdomain || !cpath || !cvalue) { + av_log(s, AV_LOG_WARNING, + "Invalid cookie found, no value, path or domain specified\n"); + goto done_cookie; + } + + // check if the request path matches the cookie path + if (av_strncasecmp(path, cpath, strlen(cpath))) + goto done_cookie; + + // the domain should be at least the size of our cookie domain + domain_offset = strlen(domain) - strlen(cdomain); + if (domain_offset < 0) + goto done_cookie; + + // match the cookie domain + if (av_strcasecmp(&domain[domain_offset], cdomain)) + goto done_cookie; + + // cookie parameters match, so copy the value + if (!*cookies) { + if (!(*cookies = av_strdup(cvalue))) { + ret = AVERROR(ENOMEM); + goto done_cookie; + } + } else { + char *tmp = *cookies; + size_t str_size = strlen(cvalue) + strlen(*cookies) + 3; + if (!(*cookies = av_malloc(str_size))) { + ret = AVERROR(ENOMEM); + goto done_cookie; + } + snprintf(*cookies, str_size, "%s; %s", tmp, cvalue); + av_free(tmp); + } + + done_cookie: + av_freep(&cdomain); + av_freep(&cpath); + av_freep(&cvalue); + if (ret < 0) { + if (*cookies) av_freep(cookies); + av_free(cset_cookies); + return ret; + } + } + + av_free(cset_cookies); + + return 0; +} + static inline int has_header(const char *str, const char *header) { /* header + 2 to skip over CRLF prefix. (make sure you have one!) */ @@ -542,7 +969,7 @@ static int http_read_header(URLContext *h, int *new_location) if ((err = http_get_line(s, line, sizeof(line))) < 0) return err; - av_log(NULL, AV_LOG_TRACE, "header='%s'\n", line); + av_log(h, AV_LOG_TRACE, "header='%s'\n", line); err = process_line(h, line, s->line_count, new_location); if (err < 0) @@ -552,6 +979,13 @@ static int http_read_header(URLContext *h, int *new_location) s->line_count++; } + if (s->seekable == -1 && s->is_mediagateway && s->filesize == 2000000000) + h->is_streamed = 1; /* we can in fact _not_ seek */ + + // add any new cookies into the existing cookie string + cookie_string(s->cookie_dict, &s->cookies); + av_dict_free(&s->cookie_dict); + return err; } @@ -609,7 +1043,7 @@ static int http_connect(URLContext *h, const char *path, const char *local_path, // Note: we send this on purpose even when s->off is 0 when we're probing, // since it allows us to detect more reliably if a (non-conforming) // server supports seeking by analysing the reply headers. - if (!has_header(s->headers, "\r\nRange: ") && !post) { + if (!has_header(s->headers, "\r\nRange: ") && !post && (s->off > 0 || s->end_off || s->seekable == -1)) { len += av_strlcatf(headers + len, sizeof(headers) - len, "Range: bytes=%"PRId64"-", s->off); if (s->end_off) @@ -641,6 +1075,14 @@ static int http_connect(URLContext *h, const char *path, const char *local_path, if (!has_header(s->headers, "\r\nContent-Type: ") && s->content_type) len += av_strlcatf(headers + len, sizeof(headers) - len, "Content-Type: %s\r\n", s->content_type); + if (!has_header(s->headers, "\r\nCookie: ") && s->cookies) { + char *cookies = NULL; + if (!get_cookies(s, &cookies, path, hoststr) && cookies) { + len += av_strlcatf(headers + len, sizeof(headers) - len, + "Cookie: %s\r\n", cookies); + av_free(cookies); + } + } if (!has_header(s->headers, "\r\nIcy-MetaData: ") && s->icy) len += av_strlcatf(headers + len, sizeof(headers) - len, "Icy-MetaData: %d\r\n", 1); @@ -663,14 +1105,14 @@ static int http_connect(URLContext *h, const char *path, const char *local_path, authstr ? authstr : "", proxyauthstr ? "Proxy-" : "", proxyauthstr ? proxyauthstr : ""); - av_freep(&authstr); - av_freep(&proxyauthstr); + av_log(h, AV_LOG_DEBUG, "request: %s\n", s->buffer); + if ((err = ffurl_write(s->hd, s->buffer, strlen(s->buffer))) < 0) - return err; + goto done; if (s->post_data) if ((err = ffurl_write(s->hd, s->post_data, s->post_datalen)) < 0) - return err; + goto done; /* init input buffer */ s->buf_ptr = s->buffer; @@ -687,15 +1129,23 @@ static int http_connect(URLContext *h, const char *path, const char *local_path, * we've still to send the POST data, but the code calling this * function will check http_code after we return. */ s->http_code = 200; - return 0; + err = 0; + goto done; } /* wait for header */ err = http_read_header(h, new_location); if (err < 0) - return err; + goto done; + + if (*new_location) + s->off = off; - return (off == s->off) ? 0 : -1; + err = (off == s->off) ? 0 : -1; +done: + av_freep(&authstr); + av_freep(&proxyauthstr); + return err; } static int http_buf_read(URLContext *h, uint8_t *buf, int size) @@ -710,10 +1160,19 @@ static int http_buf_read(URLContext *h, uint8_t *buf, int size) memcpy(buf, s->buf_ptr, len); s->buf_ptr += len; } else { + int64_t target_end = s->end_off ? s->end_off : s->filesize; if ((!s->willclose || s->chunksize < 0) && - s->filesize >= 0 && s->off >= s->filesize) + target_end >= 0 && s->off >= target_end) return AVERROR_EOF; len = ffurl_read(s->hd, buf, size); + if (!len && (!s->willclose || s->chunksize < 0) && + target_end >= 0 && s->off < target_end) { + av_log(h, AV_LOG_ERROR, + "Stream ends prematurely at %"PRId64", should be %"PRId64"\n", + s->off, target_end + ); + return AVERROR(EIO); + } } if (len > 0) { s->off += len; @@ -756,10 +1215,12 @@ static int http_buf_read_compressed(URLContext *h, uint8_t *buf, int size) } #endif /* CONFIG_ZLIB */ +static int64_t http_seek_internal(URLContext *h, int64_t off, int whence, int force_reconnect); + static int http_read_stream(URLContext *h, uint8_t *buf, int size) { HTTPContext *s = h->priv_data; - int err, new_location; + int err, new_location, read_ret, seek_ret; if (!s->hd) return AVERROR_EOF; @@ -774,7 +1235,6 @@ static int http_read_stream(URLContext *h, uint8_t *buf, int size) if (!s->chunksize) { char line[32]; - for (;;) { do { if ((err = http_get_line(s, line, sizeof(line))) < 0) return err; @@ -787,8 +1247,6 @@ static int http_read_stream(URLContext *h, uint8_t *buf, int size) if (!s->chunksize) return 0; - break; - } } size = FFMIN(size, s->chunksize); } @@ -796,9 +1254,32 @@ static int http_read_stream(URLContext *h, uint8_t *buf, int size) if (s->compressed) return http_buf_read_compressed(h, buf, size); #endif /* CONFIG_ZLIB */ - return http_buf_read(h, buf, size); + read_ret = http_buf_read(h, buf, size); + if ( (read_ret < 0 && s->reconnect && (!h->is_streamed || s->reconnect_streamed) && s->filesize > 0 && s->off < s->filesize) + || (read_ret == 0 && s->reconnect_at_eof && (!h->is_streamed || s->reconnect_streamed))) { + int64_t target = h->is_streamed ? 0 : s->off; + + if (s->reconnect_delay > s->reconnect_delay_max) + return AVERROR(EIO); + + av_log(h, AV_LOG_INFO, "Will reconnect at %"PRId64" error=%s.\n", s->off, av_err2str(read_ret)); + av_usleep(1000U*1000*s->reconnect_delay); + s->reconnect_delay = 1 + 2*s->reconnect_delay; + seek_ret = http_seek_internal(h, target, SEEK_SET, 1); + if (seek_ret != target) { + av_log(h, AV_LOG_ERROR, "Failed to reconnect at %"PRId64".\n", target); + return read_ret; + } + + read_ret = http_buf_read(h, buf, size); + } else + s->reconnect_delay = 0; + + return read_ret; } +// Like http_read_stream(), but no short reads. +// Assumes partial reads are an error. static int http_read_stream_all(URLContext *h, uint8_t *buf, int size) { int pos = 0; @@ -924,7 +1405,8 @@ static int http_shutdown(URLContext *h, int flags) HTTPContext *s = h->priv_data; /* signal end of chunked encoding if used */ - if ((flags & AVIO_FLAG_WRITE) && s->chunked_post) { + if (((flags & AVIO_FLAG_WRITE) && s->chunked_post) || + ((flags & AVIO_FLAG_READ) && s->chunked_post && s->listen)) { ret = ffurl_write(s->hd, footer, sizeof(footer) - 1); ret = ret > 0 ? 0 : ret; s->end_chunked_post = 1; @@ -948,12 +1430,12 @@ static int http_close(URLContext *h) ret = http_shutdown(h, h->flags); if (s->hd) - ffurl_close(s->hd); + ffurl_closep(&s->hd); av_dict_free(&s->chained_options); return ret; } -static int64_t http_seek(URLContext *h, int64_t off, int whence) +static int64_t http_seek_internal(URLContext *h, int64_t off, int whence, int force_reconnect) { HTTPContext *s = h->priv_data; URLContext *old_hd = s->hd; @@ -964,24 +1446,32 @@ static int64_t http_seek(URLContext *h, int64_t off, int whence) if (whence == AVSEEK_SIZE) return s->filesize; - else if ((whence == SEEK_CUR && off == 0) || - (whence == SEEK_SET && off == s->off)) + else if (!force_reconnect && + ((whence == SEEK_CUR && off == 0) || + (whence == SEEK_SET && off == s->off))) return s->off; - else if ((s->filesize == -1 && whence == SEEK_END) || h->is_streamed) + else if ((s->filesize == -1 && whence == SEEK_END)) return AVERROR(ENOSYS); - /* we save the old context in case the seek fails */ - old_buf_size = s->buf_end - s->buf_ptr; - memcpy(old_buf, s->buf_ptr, old_buf_size); - s->hd = NULL; if (whence == SEEK_CUR) off += s->off; else if (whence == SEEK_END) off += s->filesize; + else if (whence != SEEK_SET) + return AVERROR(EINVAL); + if (off < 0) + return AVERROR(EINVAL); s->off = off; + if (s->off && h->is_streamed) + return AVERROR(ENOSYS); + + /* we save the old context in case the seek fails */ + old_buf_size = s->buf_end - s->buf_ptr; + memcpy(old_buf, s->buf_ptr, old_buf_size); + s->hd = NULL; + /* if it fails, continue on old connection */ - av_dict_copy(&options, s->chained_options, 0); if ((ret = http_open_cnx(h, &options)) < 0) { av_dict_free(&options); memcpy(s->buffer, old_buf, old_buf_size); @@ -996,6 +1486,11 @@ static int64_t http_seek(URLContext *h, int64_t off, int whence) return off; } +static int64_t http_seek(URLContext *h, int64_t off, int whence) +{ + return http_seek_internal(h, off, whence, 0); +} + static int http_get_file_handle(URLContext *h) { HTTPContext *s = h->priv_data; @@ -1016,6 +1511,8 @@ HTTP_CLASS(http); const URLProtocol ff_http_protocol = { .name = "http", .url_open2 = http_open, + .url_accept = http_accept, + .url_handshake = http_handshake, .url_read = http_read, .url_write = http_write, .url_seek = http_seek, @@ -1025,6 +1522,7 @@ const URLProtocol ff_http_protocol = { .priv_data_size = sizeof(HTTPContext), .priv_data_class = &http_context_class, .flags = URL_PROTOCOL_FLAG_NETWORK, + .default_whitelist = "http,https,tls,rtp,tcp,udp,crypto,httpproxy" }; #endif /* CONFIG_HTTP_PROTOCOL */ @@ -1043,6 +1541,7 @@ const URLProtocol ff_https_protocol = { .priv_data_size = sizeof(HTTPContext), .priv_data_class = &https_context_class, .flags = URL_PROTOCOL_FLAG_NETWORK, + .default_whitelist = "http,https,tls,rtp,tcp,udp,crypto,httpproxy" }; #endif /* CONFIG_HTTPS_PROTOCOL */ @@ -1051,7 +1550,7 @@ static int http_proxy_close(URLContext *h) { HTTPContext *s = h->priv_data; if (s->hd) - ffurl_close(s->hd); + ffurl_closep(&s->hd); return 0; } @@ -1066,7 +1565,10 @@ static int http_proxy_open(URLContext *h, const char *uri, int flags) char *authstr; int new_loc; - h->is_streamed = 1; + if( s->seekable == 1 ) + h->is_streamed = 0; + else + h->is_streamed = 1; av_url_split(NULL, 0, auth, sizeof(auth), hostname, sizeof(hostname), &port, pathbuf, sizeof(pathbuf), uri); @@ -1078,8 +1580,9 @@ static int http_proxy_open(URLContext *h, const char *uri, int flags) ff_url_join(lower_url, sizeof(lower_url), "tcp", NULL, hostname, port, NULL); redo: - ret = ffurl_open(&s->hd, lower_url, AVIO_FLAG_READ_WRITE, - &h->interrupt_callback, NULL, h->protocols); + ret = ffurl_open_whitelist(&s->hd, lower_url, AVIO_FLAG_READ_WRITE, + &h->interrupt_callback, NULL, + h->protocol_whitelist, h->protocol_blacklist); if (ret < 0) return ret; @@ -1122,14 +1625,13 @@ redo: if (s->http_code == 407 && (cur_auth_type == HTTP_AUTH_NONE || s->proxy_auth_state.stale) && s->proxy_auth_state.auth_type != HTTP_AUTH_NONE && attempts < 2) { - ffurl_close(s->hd); - s->hd = NULL; + ffurl_closep(&s->hd); goto redo; } if (s->http_code < 400) return 0; - ret = AVERROR(EIO); + ret = ff_http_averror(s->http_code, AVERROR(EIO)); fail: http_proxy_close(h); |