FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavformat/icecast.c
Date: 2022-12-09 07:38:14
Exec Total Coverage
Lines: 0 80 0.0%
Functions: 0 4 0.0%
Branches: 0 56 0.0%

Line Branch Exec Source
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 int tls;
47 } IcecastContext;
48
49 #define DEFAULT_ICE_USER "source"
50
51 #define NOT_EMPTY(s) (s && s[0])
52
53 #define OFFSET(x) offsetof(IcecastContext, x)
54 #define E AV_OPT_FLAG_ENCODING_PARAM
55
56 static const AVOption options[] = {
57 { "ice_genre", "set stream genre", OFFSET(genre), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
58 { "ice_name", "set stream description", OFFSET(name), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
59 { "ice_description", "set stream description", OFFSET(description), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
60 { "ice_url", "set stream website", OFFSET(url), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
61 { "ice_public", "set if stream is public", OFFSET(public), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
62 { "user_agent", "override User-Agent header", OFFSET(user_agent), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
63 { "password", "set password", OFFSET(pass), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
64 { "content_type", "set content-type, MUST be set if not audio/mpeg", OFFSET(content_type), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
65 { "legacy_icecast", "use legacy SOURCE method, for Icecast < v2.4", OFFSET(legacy_icecast), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
66 { "tls", "use a TLS connection", OFFSET(tls), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
67 { NULL }
68 };
69
70
71 static void cat_header(AVBPrint *bp, const char key[], const char value[])
72 {
73 if (NOT_EMPTY(value))
74 av_bprintf(bp, "%s: %s\r\n", key, value);
75 }
76
77 static int icecast_close(URLContext *h)
78 {
79 IcecastContext *s = h->priv_data;
80 ffurl_closep(&s->hd);
81 return 0;
82 }
83
84 static int icecast_open(URLContext *h, const char *uri, int flags)
85 {
86 IcecastContext *s = h->priv_data;
87
88 // Dict to set options that we pass to the HTTP protocol
89 AVDictionary *opt_dict = NULL;
90
91 // URI part variables
92 char h_url[1024], host[1024], auth[1024], path[1024];
93 char *headers, *user = NULL;
94 int port, ret;
95 AVBPrint bp;
96
97 if (flags & AVIO_FLAG_READ)
98 return AVERROR(ENOSYS);
99
100 av_bprint_init(&bp, 0, AV_BPRINT_SIZE_AUTOMATIC);
101
102 // Build header strings
103 cat_header(&bp, "Ice-Name", s->name);
104 cat_header(&bp, "Ice-Description", s->description);
105 cat_header(&bp, "Ice-URL", s->url);
106 cat_header(&bp, "Ice-Genre", s->genre);
107 cat_header(&bp, "Ice-Public", s->public ? "1" : "0");
108 if (!av_bprint_is_complete(&bp)) {
109 av_bprint_finalize(&bp, NULL);
110 return AVERROR(ENOMEM);
111 }
112 if ((ret = av_bprint_finalize(&bp, &headers)) < 0)
113 return ret;
114
115 // Set options
116 av_dict_set(&opt_dict, "method", s->legacy_icecast ? "SOURCE" : "PUT", 0);
117 av_dict_set(&opt_dict, "auth_type", "basic", 0);
118 av_dict_set(&opt_dict, "headers", headers, AV_DICT_DONT_STRDUP_VAL);
119 av_dict_set(&opt_dict, "chunked_post", "0", 0);
120 av_dict_set(&opt_dict, "send_expect_100", s->legacy_icecast ? "-1" : "1", 0);
121 if (NOT_EMPTY(s->content_type))
122 av_dict_set(&opt_dict, "content_type", s->content_type, 0);
123 else
124 av_dict_set(&opt_dict, "content_type", "audio/mpeg", 0);
125 if (NOT_EMPTY(s->user_agent))
126 av_dict_set(&opt_dict, "user_agent", s->user_agent, 0);
127
128 // Parse URI
129 av_url_split(NULL, 0, auth, sizeof(auth), host, sizeof(host),
130 &port, path, sizeof(path), uri);
131
132 // Check for auth data in URI
133 if (auth[0]) {
134 char *sep = strchr(auth, ':');
135 if (sep) {
136 *sep = 0;
137 sep++;
138 if (s->pass) {
139 av_free(s->pass);
140 av_log(h, AV_LOG_WARNING, "Overwriting -password <pass> with URI password!\n");
141 }
142 if (!(s->pass = av_strdup(sep))) {
143 ret = AVERROR(ENOMEM);
144 goto cleanup;
145 }
146 }
147 if (!(user = av_strdup(auth))) {
148 ret = AVERROR(ENOMEM);
149 goto cleanup;
150 }
151 }
152
153 // Build new authstring
154 snprintf(auth, sizeof(auth),
155 "%s:%s",
156 user ? user : DEFAULT_ICE_USER,
157 s->pass ? s->pass : "");
158
159 // Check for mountpoint (path)
160 if (!path[0] || strcmp(path, "/") == 0) {
161 av_log(h, AV_LOG_ERROR, "No mountpoint (path) specified!\n");
162 ret = AVERROR(EIO);
163 goto cleanup;
164 }
165
166 // Build new URI for passing to http protocol
167 ff_url_join(h_url, sizeof(h_url),
168 s->tls ? "https" : "http",
169 auth, host, port, "%s", path);
170 // Finally open http proto handler
171 ret = ffurl_open_whitelist(&s->hd, h_url, AVIO_FLAG_READ_WRITE, NULL,
172 &opt_dict, h->protocol_whitelist, h->protocol_blacklist, h);
173
174 cleanup:
175 av_freep(&user);
176 av_dict_free(&opt_dict);
177
178 return ret;
179 }
180
181 static int icecast_write(URLContext *h, const uint8_t *buf, int size)
182 {
183 IcecastContext *s = h->priv_data;
184 if (!s->send_started) {
185 s->send_started = 1;
186 if (!s->content_type && size >= 8) {
187 static const uint8_t oggs[4] = { 0x4F, 0x67, 0x67, 0x53 };
188 static const uint8_t webm[4] = { 0x1A, 0x45, 0xDF, 0xA3 };
189 static const uint8_t opus[8] = { 0x4F, 0x70, 0x75, 0x73, 0x48, 0x65, 0x61, 0x64 };
190 if (memcmp(buf, oggs, sizeof(oggs)) == 0) {
191 av_log(h, AV_LOG_WARNING, "Streaming Ogg but appropriate content type NOT set!\n");
192 av_log(h, AV_LOG_WARNING, "Set it with -content_type application/ogg\n");
193 } else if (memcmp(buf, opus, sizeof(opus)) == 0) {
194 av_log(h, AV_LOG_WARNING, "Streaming Opus but appropriate content type NOT set!\n");
195 av_log(h, AV_LOG_WARNING, "Set it with -content_type audio/ogg\n");
196 } else if (memcmp(buf, webm, sizeof(webm)) == 0) {
197 av_log(h, AV_LOG_WARNING, "Streaming WebM but appropriate content type NOT set!\n");
198 av_log(h, AV_LOG_WARNING, "Set it with -content_type video/webm\n");
199 } else {
200 av_log(h, AV_LOG_WARNING, "It seems you are streaming an unsupported format.\n");
201 av_log(h, AV_LOG_WARNING, "It might work, but is not officially supported in Icecast!\n");
202 }
203 }
204 }
205 return ffurl_write(s->hd, buf, size);
206 }
207
208 static const AVClass icecast_context_class = {
209 .class_name = "icecast",
210 .item_name = av_default_item_name,
211 .option = options,
212 .version = LIBAVUTIL_VERSION_INT,
213 };
214
215 const URLProtocol ff_icecast_protocol = {
216 .name = "icecast",
217 .url_open = icecast_open,
218 .url_write = icecast_write,
219 .url_close = icecast_close,
220 .priv_data_size = sizeof(IcecastContext),
221 .priv_data_class = &icecast_context_class,
222 .flags = URL_PROTOCOL_FLAG_NETWORK,
223 };
224