LCOV - code coverage report
Current view: top level - libavformat - icecast.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 0 81 0.0 %
Date: 2017-12-17 04:34:43 Functions: 0 4 0.0 %

          Line data    Source code
       1             : /*
       2             :  * Icecast protocol for FFmpeg
       3             :  * Copyright (c) 2014 Marvin Scholz
       4             :  *
       5             :  * This file is part of FFmpeg.
       6             :  *
       7             :  * FFmpeg is free software; you can redistribute it and/or
       8             :  * modify it under the terms of the GNU Lesser General Public
       9             :  * License as published by the Free Software Foundation; either
      10             :  * version 2.1 of the License, or (at your option) any later version.
      11             :  *
      12             :  * FFmpeg is distributed in the hope that it will be useful,
      13             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      14             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      15             :  * Lesser General Public License for more details.
      16             :  *
      17             :  * You should have received a copy of the GNU Lesser General Public
      18             :  * License along with FFmpeg; if not, write to the Free Software
      19             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      20             :  */
      21             : 
      22             : 
      23             : #include "libavutil/avstring.h"
      24             : #include "libavutil/bprint.h"
      25             : #include "libavutil/opt.h"
      26             : 
      27             : #include "avformat.h"
      28             : #include "network.h"
      29             : 
      30             : 
      31             : typedef struct IcecastContext {
      32             :     const AVClass *class;
      33             :     URLContext *hd;
      34             :     int send_started;
      35             :     char *user;
      36             :     // Options
      37             :     char *content_type;
      38             :     char *description;
      39             :     char *genre;
      40             :     int legacy_icecast;
      41             :     char *name;
      42             :     char *pass;
      43             :     int public;
      44             :     char *url;
      45             :     char *user_agent;
      46             : } IcecastContext;
      47             : 
      48             : #define DEFAULT_ICE_USER "source"
      49             : 
      50             : #define NOT_EMPTY(s) (s && s[0])
      51             : 
      52             : #define OFFSET(x) offsetof(IcecastContext, x)
      53             : #define E AV_OPT_FLAG_ENCODING_PARAM
      54             : 
      55             : static const AVOption options[] = {
      56             :     { "ice_genre", "set stream genre", OFFSET(genre), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
      57             :     { "ice_name", "set stream description", OFFSET(name), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
      58             :     { "ice_description", "set stream description", OFFSET(description), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
      59             :     { "ice_url", "set stream website", OFFSET(url), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
      60             :     { "ice_public", "set if stream is public", OFFSET(public), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
      61             :     { "user_agent", "override User-Agent header", OFFSET(user_agent), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
      62             :     { "password", "set password", OFFSET(pass), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
      63             :     { "content_type", "set content-type, MUST be set if not audio/mpeg", OFFSET(content_type), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
      64             :     { "legacy_icecast", "use legacy SOURCE method, for Icecast < v2.4", OFFSET(legacy_icecast), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
      65             :     { NULL }
      66             : };
      67             : 
      68             : 
      69           0 : static void cat_header(AVBPrint *bp, const char key[], const char value[])
      70             : {
      71           0 :     if (NOT_EMPTY(value))
      72           0 :         av_bprintf(bp, "%s: %s\r\n", key, value);
      73           0 : }
      74             : 
      75           0 : static int icecast_close(URLContext *h)
      76             : {
      77           0 :     IcecastContext *s = h->priv_data;
      78           0 :     if (s->hd)
      79           0 :         ffurl_close(s->hd);
      80           0 :     return 0;
      81             : }
      82             : 
      83           0 : static int icecast_open(URLContext *h, const char *uri, int flags)
      84             : {
      85           0 :     IcecastContext *s = h->priv_data;
      86             : 
      87             :     // Dict to set options that we pass to the HTTP protocol
      88           0 :     AVDictionary *opt_dict = NULL;
      89             : 
      90             :     // URI part variables
      91             :     char h_url[1024], host[1024], auth[1024], path[1024];
      92           0 :     char *headers = NULL, *user = NULL;
      93             :     int port, ret;
      94             :     AVBPrint bp;
      95             : 
      96           0 :     if (flags & AVIO_FLAG_READ)
      97           0 :         return AVERROR(ENOSYS);
      98             : 
      99           0 :     av_bprint_init(&bp, 0, 1);
     100             : 
     101             :     // Build header strings
     102           0 :     cat_header(&bp, "Ice-Name", s->name);
     103           0 :     cat_header(&bp, "Ice-Description", s->description);
     104           0 :     cat_header(&bp, "Ice-URL", s->url);
     105           0 :     cat_header(&bp, "Ice-Genre", s->genre);
     106           0 :     cat_header(&bp, "Ice-Public", s->public ? "1" : "0");
     107           0 :     if (!av_bprint_is_complete(&bp)) {
     108           0 :         ret = AVERROR(ENOMEM);
     109           0 :         goto cleanup;
     110             :     }
     111           0 :     av_bprint_finalize(&bp, &headers);
     112             : 
     113             :     // Set options
     114           0 :     av_dict_set(&opt_dict, "method", s->legacy_icecast ? "SOURCE" : "PUT", 0);
     115           0 :     av_dict_set(&opt_dict, "auth_type", "basic", 0);
     116           0 :     av_dict_set(&opt_dict, "headers", headers, 0);
     117           0 :     av_dict_set(&opt_dict, "chunked_post", "0", 0);
     118           0 :     av_dict_set(&opt_dict, "send_expect_100", s->legacy_icecast ? "0" : "1", 0);
     119           0 :     if (NOT_EMPTY(s->content_type))
     120           0 :         av_dict_set(&opt_dict, "content_type", s->content_type, 0);
     121             :     else
     122           0 :         av_dict_set(&opt_dict, "content_type", "audio/mpeg", 0);
     123           0 :     if (NOT_EMPTY(s->user_agent))
     124           0 :         av_dict_set(&opt_dict, "user_agent", s->user_agent, 0);
     125             : 
     126             :     // Parse URI
     127           0 :     av_url_split(NULL, 0, auth, sizeof(auth), host, sizeof(host),
     128             :                  &port, path, sizeof(path), uri);
     129             : 
     130             :     // Check for auth data in URI
     131           0 :     if (auth[0]) {
     132           0 :         char *sep = strchr(auth, ':');
     133           0 :         if (sep) {
     134           0 :             *sep = 0;
     135           0 :             sep++;
     136           0 :             if (s->pass) {
     137           0 :                 av_free(s->pass);
     138           0 :                 av_log(h, AV_LOG_WARNING, "Overwriting -password <pass> with URI password!\n");
     139             :             }
     140           0 :             if (!(s->pass = av_strdup(sep))) {
     141           0 :                 ret = AVERROR(ENOMEM);
     142           0 :                 goto cleanup;
     143             :             }
     144             :         }
     145           0 :         if (!(user = av_strdup(auth))) {
     146           0 :             ret = AVERROR(ENOMEM);
     147           0 :             goto cleanup;
     148             :         }
     149             :     }
     150             : 
     151             :     // Build new authstring
     152           0 :     snprintf(auth, sizeof(auth),
     153             :              "%s:%s",
     154           0 :              user ? user : DEFAULT_ICE_USER,
     155           0 :              s->pass ? s->pass : "");
     156             : 
     157             :     // Check for mountpoint (path)
     158           0 :     if (!path[0] || strcmp(path, "/") == 0) {
     159           0 :         av_log(h, AV_LOG_ERROR, "No mountpoint (path) specified!\n");
     160           0 :         ret = AVERROR(EIO);
     161           0 :         goto cleanup;
     162             :     }
     163             : 
     164             :     // Build new URI for passing to http protocol
     165           0 :     ff_url_join(h_url, sizeof(h_url), "http", auth, host, port, "%s", path);
     166             :     // Finally open http proto handler
     167           0 :     ret = ffurl_open_whitelist(&s->hd, h_url, AVIO_FLAG_READ_WRITE, NULL,
     168             :                                &opt_dict, h->protocol_whitelist, h->protocol_blacklist, h);
     169             : 
     170           0 : cleanup:
     171           0 :     av_freep(&user);
     172           0 :     av_freep(&headers);
     173           0 :     av_dict_free(&opt_dict);
     174             : 
     175           0 :     return ret;
     176             : }
     177             : 
     178           0 : static int icecast_write(URLContext *h, const uint8_t *buf, int size)
     179             : {
     180           0 :     IcecastContext *s = h->priv_data;
     181           0 :     if (!s->send_started) {
     182           0 :         s->send_started = 1;
     183           0 :         if (!s->content_type && size >= 8) {
     184             :             static const uint8_t oggs[4] = { 0x4F, 0x67, 0x67, 0x53 };
     185             :             static const uint8_t webm[4] = { 0x1A, 0x45, 0xDF, 0xA3 };
     186             :             static const uint8_t opus[8] = { 0x4F, 0x70, 0x75, 0x73, 0x48, 0x65, 0x61, 0x64 };
     187           0 :             if (memcmp(buf, oggs, sizeof(oggs)) == 0) {
     188           0 :                 av_log(h, AV_LOG_WARNING, "Streaming Ogg but appropriate content type NOT set!\n");
     189           0 :                 av_log(h, AV_LOG_WARNING, "Set it with -content_type application/ogg\n");
     190           0 :             } else if (memcmp(buf, opus, sizeof(opus)) == 0) {
     191           0 :                 av_log(h, AV_LOG_WARNING, "Streaming Opus but appropriate content type NOT set!\n");
     192           0 :                 av_log(h, AV_LOG_WARNING, "Set it with -content_type audio/ogg\n");
     193           0 :             } else if (memcmp(buf, webm, sizeof(webm)) == 0) {
     194           0 :                 av_log(h, AV_LOG_WARNING, "Streaming WebM but appropriate content type NOT set!\n");
     195           0 :                 av_log(h, AV_LOG_WARNING, "Set it with -content_type video/webm\n");
     196             :             } else {
     197           0 :                 av_log(h, AV_LOG_WARNING, "It seems you are streaming an unsupported format.\n");
     198           0 :                 av_log(h, AV_LOG_WARNING, "It might work, but is not officially supported in Icecast!\n");
     199             :             }
     200             :         }
     201             :     }
     202           0 :     return ffurl_write(s->hd, buf, size);
     203             : }
     204             : 
     205             : static const AVClass icecast_context_class = {
     206             :     .class_name     = "icecast",
     207             :     .item_name      = av_default_item_name,
     208             :     .option         = options,
     209             :     .version        = LIBAVUTIL_VERSION_INT,
     210             : };
     211             : 
     212             : const URLProtocol ff_icecast_protocol = {
     213             :     .name            = "icecast",
     214             :     .url_open        = icecast_open,
     215             :     .url_write       = icecast_write,
     216             :     .url_close       = icecast_close,
     217             :     .priv_data_size  = sizeof(IcecastContext),
     218             :     .priv_data_class = &icecast_context_class,
     219             :     .flags           = URL_PROTOCOL_FLAG_NETWORK,
     220             : };

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