FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavformat/avio.c
Date: 2025-07-08 13:42:56
Exec Total Coverage
Lines: 263 487 54.0%
Functions: 28 42 66.7%
Branches: 155 366 42.3%
Line Branch Exec Source
1 /*
2 * unbuffered I/O
3 * Copyright (c) 2001 Fabrice Bellard
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 #include "libavutil/avstring.h"
23 #include "libavutil/dict.h"
24 #include "libavutil/mem.h"
25 #include "libavutil/opt.h"
26 #include "libavutil/time.h"
27 #include "libavutil/avassert.h"
28 #include "avio_internal.h"
29 #include "os_support.h"
30 #include "internal.h"
31 #if CONFIG_NETWORK
32 #include "network.h"
33 #endif
34 #include "url.h"
35
36 #define IO_BUFFER_SIZE 32768
37
38 /** @name Logging context. */
39 /*@{*/
40 6 static const char *urlcontext_to_name(void *ptr)
41 {
42 6 URLContext *h = (URLContext *)ptr;
43
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 6 if (h->prot)
44 6 return h->prot->name;
45 else
46 ✗ return "NULL";
47 }
48
49 35620 static void *urlcontext_child_next(void *obj, void *prev)
50 {
51 35620 URLContext *h = obj;
52
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 35620 if (!prev && h->priv_data && h->prot->priv_data_class)
53 17808 return h->priv_data;
54 17812 return NULL;
55 }
56
57 #define OFFSET(x) offsetof(URLContext,x)
58 #define E AV_OPT_FLAG_ENCODING_PARAM
59 #define D AV_OPT_FLAG_DECODING_PARAM
60 static const AVOption options[] = {
61 {"protocol_whitelist", "List of protocols that are allowed to be used", OFFSET(protocol_whitelist), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D },
62 {"protocol_blacklist", "List of protocols that are not allowed to be used", OFFSET(protocol_blacklist), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D },
63 {"rw_timeout", "Timeout for IO operations (in microseconds)", offsetof(URLContext, rw_timeout), AV_OPT_TYPE_INT64, { .i64 = 0 }, 0, INT64_MAX, AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_DECODING_PARAM },
64 { NULL }
65 };
66
67 static const AVClass url_context_class = {
68 .class_name = "URLContext",
69 .item_name = urlcontext_to_name,
70 .option = options,
71 .version = LIBAVUTIL_VERSION_INT,
72 .child_next = urlcontext_child_next,
73 .child_class_iterate = ff_urlcontext_child_class_iterate,
74 };
75 /*@}*/
76
77 35612 static void *avio_child_next(void *obj, void *prev)
78 {
79 35612 AVIOContext *s = obj;
80
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 35612 return prev ? NULL : s->opaque;
81 }
82
83 230801 static const AVClass *child_class_iterate(void **iter)
84 {
85
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 230801 const AVClass *c = *iter ? NULL : &url_context_class;
86 230801 *iter = (void*)(uintptr_t)c;
87 230801 return c;
88 }
89
90 #define AVIOOFFSET(x) offsetof(AVIOContext,x)
91 #define E AV_OPT_FLAG_ENCODING_PARAM
92 #define D AV_OPT_FLAG_DECODING_PARAM
93 static const AVOption avio_options[] = {
94 {"protocol_whitelist", "List of protocols that are allowed to be used", AVIOOFFSET(protocol_whitelist), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D },
95 { NULL },
96 };
97
98 const AVClass ff_avio_class = {
99 .class_name = "AVIOContext",
100 .item_name = av_default_item_name,
101 .version = LIBAVUTIL_VERSION_INT,
102 .option = avio_options,
103 .child_next = avio_child_next,
104 .child_class_iterate = child_class_iterate,
105 };
106
107 ✗ URLContext *ffio_geturlcontext(AVIOContext *s)
108 {
109 ✗ if (!s)
110 ✗ return NULL;
111
112 ✗ if (s->opaque && s->read_packet == ffurl_read2)
113 ✗ return s->opaque;
114 else
115 ✗ return NULL;
116 }
117
118 164329 static int url_alloc_for_protocol(URLContext **puc, const URLProtocol *up,
119 const char *filename, int flags,
120 const AVIOInterruptCB *int_cb)
121 {
122 URLContext *uc;
123 int err;
124
125 #if CONFIG_NETWORK
126
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 164329 if (up->flags & URL_PROTOCOL_FLAG_NETWORK && !ff_network_init())
127 ✗ return AVERROR(EIO);
128 #endif
129
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 164329 if ((flags & AVIO_FLAG_READ) && !up->url_read) {
130 ✗ av_log(NULL, AV_LOG_ERROR,
131 ✗ "Impossible to open the '%s' protocol for reading\n", up->name);
132 ✗ return AVERROR(EIO);
133 }
134
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 164329 if ((flags & AVIO_FLAG_WRITE) && !up->url_write) {
135 ✗ av_log(NULL, AV_LOG_ERROR,
136 ✗ "Impossible to open the '%s' protocol for writing\n", up->name);
137 ✗ return AVERROR(EIO);
138 }
139 164329 uc = av_mallocz(sizeof(URLContext) + strlen(filename) + 1);
140
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 164329 if (!uc) {
141 ✗ err = AVERROR(ENOMEM);
142 ✗ goto fail;
143 }
144 164329 uc->av_class = &url_context_class;
145 164329 uc->filename = (char *)&uc[1];
146 164329 strcpy(uc->filename, filename);
147 164329 uc->prot = up;
148 164329 uc->flags = flags;
149 164329 uc->is_streamed = 0; /* default = not streamed */
150 164329 uc->max_packet_size = 0; /* default: stream file */
151
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 164329 if (up->priv_data_size) {
152 164329 uc->priv_data = av_mallocz(up->priv_data_size);
153
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 164329 if (!uc->priv_data) {
154 ✗ err = AVERROR(ENOMEM);
155 ✗ goto fail;
156 }
157
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 164329 if (up->priv_data_class) {
158 char *start;
159 161629 *(const AVClass **)uc->priv_data = up->priv_data_class;
160 161629 av_opt_set_defaults(uc->priv_data);
161
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 161629 if (av_strstart(uc->filename, up->name, (const char**)&start) && *start == ',') {
162 ✗ int ret= 0;
163 ✗ char *p= start;
164 ✗ char sep= *++p;
165 char *key, *val;
166 ✗ p++;
167
168 ✗ if (strcmp(up->name, "subfile"))
169 ✗ ret = AVERROR(EINVAL);
170
171 ✗ while(ret >= 0 && (key= strchr(p, sep)) && p<key && (val = strchr(key+1, sep))){
172 ✗ *val= *key= 0;
173 ✗ ret = av_opt_set(uc->priv_data, p, key+1, 0);
174 ✗ if (ret == AVERROR_OPTION_NOT_FOUND)
175 ✗ av_log(uc, AV_LOG_ERROR, "Key '%s' not found.\n", p);
176 ✗ *val= *key= sep;
177 ✗ p= val+1;
178 }
179 ✗ if(ret<0 || p!=key){
180 ✗ av_log(uc, AV_LOG_ERROR, "Error parsing options string %s\n", start);
181 ✗ err = AVERROR(EINVAL);
182 ✗ goto fail;
183 }
184 ✗ memmove(start, key+1, strlen(key));
185 }
186 }
187 }
188
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 164329 if (int_cb)
189 113383 uc->interrupt_callback = *int_cb;
190
191 164329 *puc = uc;
192 164329 return 0;
193 ✗ fail:
194 ✗ *puc = NULL;
195 ✗ if (uc)
196 ✗ av_freep(&uc->priv_data);
197 ✗ av_freep(&uc);
198 #if CONFIG_NETWORK
199 ✗ if (up->flags & URL_PROTOCOL_FLAG_NETWORK)
200 ✗ ff_network_close();
201 #endif
202 ✗ return err;
203 }
204
205 113483 int ffurl_connect(URLContext *uc, AVDictionary **options)
206 {
207 int err;
208 113483 AVDictionary *tmp_opts = NULL;
209 AVDictionaryEntry *e;
210
211
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 113483 if (!options)
212 ✗ options = &tmp_opts;
213
214 // Check that URLContext was initialized correctly and lists are matching if set
215
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 113483 av_assert0(!(e=av_dict_get(*options, "protocol_whitelist", NULL, 0)) ||
216 (uc->protocol_whitelist && !strcmp(uc->protocol_whitelist, e->value)));
217
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 113483 av_assert0(!(e=av_dict_get(*options, "protocol_blacklist", NULL, 0)) ||
218 (uc->protocol_blacklist && !strcmp(uc->protocol_blacklist, e->value)));
219
220
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 113483 if (uc->protocol_whitelist && av_match_list(uc->prot->name, uc->protocol_whitelist, ',') <= 0) {
221 ✗ av_log(uc, AV_LOG_ERROR, "Protocol '%s' not on whitelist '%s'!\n", uc->prot->name, uc->protocol_whitelist);
222 ✗ return AVERROR(EINVAL);
223 }
224
225
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 113483 if (uc->protocol_blacklist && av_match_list(uc->prot->name, uc->protocol_blacklist, ',') > 0) {
226 ✗ av_log(uc, AV_LOG_ERROR, "Protocol '%s' on blacklist '%s'!\n", uc->prot->name, uc->protocol_blacklist);
227 ✗ return AVERROR(EINVAL);
228 }
229
230
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 113483 if (!uc->protocol_whitelist && uc->prot->default_whitelist) {
231 110646 av_log(uc, AV_LOG_DEBUG, "Setting default whitelist '%s'\n", uc->prot->default_whitelist);
232 110646 uc->protocol_whitelist = av_strdup(uc->prot->default_whitelist);
233
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 110646 if (!uc->protocol_whitelist) {
234 ✗ return AVERROR(ENOMEM);
235 }
236
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 2837 } else if (!uc->protocol_whitelist)
237 2700 av_log(uc, AV_LOG_DEBUG, "No default whitelist set\n"); // This should be an error once all declare a default whitelist
238
239
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 113483 if ((err = av_dict_set(options, "protocol_whitelist", uc->protocol_whitelist, 0)) < 0)
240 ✗ return err;
241
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 113483 if ((err = av_dict_set(options, "protocol_blacklist", uc->protocol_blacklist, 0)) < 0)
242 ✗ return err;
243
244 113483 err =
245 113484 uc->prot->url_open2 ? uc->prot->url_open2(uc,
246 1 uc->filename,
247 uc->flags,
248
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 113483 options) :
249 113482 uc->prot->url_open(uc, uc->filename, uc->flags);
250
251 113483 av_dict_set(options, "protocol_whitelist", NULL, 0);
252 113483 av_dict_set(options, "protocol_blacklist", NULL, 0);
253
254
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 113483 if (err)
255 1 return err;
256 113482 uc->is_connected = 1;
257 /* We must be careful here as ffurl_seek() could be slow,
258 * for example for http */
259
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 113482 if ((uc->flags & AVIO_FLAG_WRITE) || !strcmp(uc->prot->name, "file"))
260
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 113479 if (!uc->is_streamed && ffurl_seek(uc, 0, SEEK_SET) < 0)
261 2699 uc->is_streamed = 1;
262 113482 return 0;
263 }
264
265 ✗ int ffurl_accept(URLContext *s, URLContext **c)
266 {
267 ✗ av_assert0(!*c);
268 ✗ if (s->prot->url_accept)
269 ✗ return s->prot->url_accept(s, c);
270 ✗ return AVERROR(EBADF);
271 }
272
273 ✗ int avio_accept(AVIOContext *s, AVIOContext **c)
274 {
275 int ret;
276 ✗ URLContext *sc = s->opaque;
277 ✗ URLContext *cc = NULL;
278 ✗ ret = ffurl_accept(sc, &cc);
279 ✗ if (ret < 0)
280 ✗ return ret;
281 ✗ return ffio_fdopen(c, cc);
282 }
283
284 ✗ int ffurl_handshake(URLContext *c)
285 {
286 int ret;
287 ✗ if (c->prot->url_handshake) {
288 ✗ ret = c->prot->url_handshake(c);
289 ✗ if (ret)
290 ✗ return ret;
291 }
292 ✗ c->is_connected = 1;
293 ✗ return 0;
294 }
295
296 ✗ int avio_handshake(AVIOContext *c)
297 {
298 ✗ URLContext *cc = c->opaque;
299 ✗ return ffurl_handshake(cc);
300 }
301
302 #define URL_SCHEME_CHARS \
303 "abcdefghijklmnopqrstuvwxyz" \
304 "ABCDEFGHIJKLMNOPQRSTUVWXYZ" \
305 "0123456789+-."
306
307 173676 static const struct URLProtocol *url_find_protocol(const char *filename)
308 {
309 const URLProtocol **protocols;
310 char proto_str[128], proto_nested[128], *ptr;
311 173676 size_t proto_len = strspn(filename, URL_SCHEME_CHARS);
312 int i;
313
314
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 173676 if (filename[proto_len] != ':' &&
315
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 173676 (strncmp(filename, "subfile,", 8) || !strchr(filename + proto_len + 1, ':')) ||
316 10731 is_dos_path(filename))
317 162945 strcpy(proto_str, "file");
318 else
319 10731 av_strlcpy(proto_str, filename,
320 10731 FFMIN(proto_len + 1, sizeof(proto_str)));
321
322 173676 av_strlcpy(proto_nested, proto_str, sizeof(proto_nested));
323
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 173676 if ((ptr = strchr(proto_nested, '+')))
324 ✗ *ptr = '\0';
325
326 173676 protocols = ffurl_get_protocols(NULL, NULL);
327
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 173676 if (!protocols)
328 ✗ return NULL;
329
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 1664964 for (i = 0; protocols[i]; i++) {
330 1664964 const URLProtocol *up = protocols[i];
331
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 1664964 if (!strcmp(proto_str, up->name)) {
332 173676 av_freep(&protocols);
333 173676 return up;
334 }
335
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 1491288 if (up->flags & URL_PROTOCOL_FLAG_NESTED_SCHEME &&
336
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 184403 !strcmp(proto_nested, up->name)) {
337 ✗ av_freep(&protocols);
338 ✗ return up;
339 }
340 }
341 ✗ av_freep(&protocols);
342 ✗ if (av_strstart(filename, "https:", NULL) || av_strstart(filename, "tls:", NULL) ||
343 ✗ av_strstart(filename, "dtls:", NULL))
344 ✗ av_log(NULL, AV_LOG_WARNING, "https or dtls protocol not found, recompile FFmpeg with "
345 "openssl, gnutls or securetransport enabled.\n");
346
347 ✗ return NULL;
348 }
349
350 164329 int ffurl_alloc(URLContext **puc, const char *filename, int flags,
351 const AVIOInterruptCB *int_cb)
352 {
353 164329 const URLProtocol *p = NULL;
354
355 164329 p = url_find_protocol(filename);
356
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 164329 if (p)
357 164329 return url_alloc_for_protocol(puc, p, filename, flags, int_cb);
358
359 ✗ *puc = NULL;
360 ✗ return AVERROR_PROTOCOL_NOT_FOUND;
361 }
362
363 113483 int ffurl_open_whitelist(URLContext **puc, const char *filename, int flags,
364 const AVIOInterruptCB *int_cb, AVDictionary **options,
365 const char *whitelist, const char* blacklist,
366 URLContext *parent)
367 {
368 113483 AVDictionary *tmp_opts = NULL;
369 AVDictionaryEntry *e;
370 113483 int ret = ffurl_alloc(puc, filename, flags, int_cb);
371
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 113483 if (ret < 0)
372 ✗ return ret;
373
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 113483 if (parent) {
374 393 ret = av_opt_copy(*puc, parent);
375
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 393 if (ret < 0)
376 ✗ goto fail;
377 }
378
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 127044 if (options &&
379 13561 (ret = av_opt_set_dict(*puc, options)) < 0)
380 ✗ goto fail;
381
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 124344 if (options && (*puc)->prot->priv_data_class &&
382 10861 (ret = av_opt_set_dict((*puc)->priv_data, options)) < 0)
383 ✗ goto fail;
384
385
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 113483 if (!options)
386 99922 options = &tmp_opts;
387
388
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 113483 av_assert0(!whitelist ||
389 !(e=av_dict_get(*options, "protocol_whitelist", NULL, 0)) ||
390 !strcmp(whitelist, e->value));
391
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 113483 av_assert0(!blacklist ||
392 !(e=av_dict_get(*options, "protocol_blacklist", NULL, 0)) ||
393 !strcmp(blacklist, e->value));
394
395
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 113483 if ((ret = av_dict_set(options, "protocol_whitelist", whitelist, 0)) < 0)
396 ✗ goto fail;
397
398
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 113483 if ((ret = av_dict_set(options, "protocol_blacklist", blacklist, 0)) < 0)
399 ✗ goto fail;
400
401
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 113483 if ((ret = av_opt_set_dict(*puc, options)) < 0)
402 ✗ goto fail;
403
404 113483 ret = ffurl_connect(*puc, options);
405
406
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 113483 if (!ret)
407 113482 return 0;
408 1 fail:
409 1 ffurl_closep(puc);
410 1 return ret;
411 }
412
413 113089 int ffio_fdopen(AVIOContext **sp, URLContext *h)
414 {
415 AVIOContext *s;
416 113089 uint8_t *buffer = NULL;
417 int buffer_size, max_packet_size;
418
419 113089 max_packet_size = h->max_packet_size;
420
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 113089 if (max_packet_size) {
421 3638 buffer_size = max_packet_size; /* no need to bufferize more than one packet */
422 } else {
423 109451 buffer_size = IO_BUFFER_SIZE;
424 }
425
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 113089 if (!(h->flags & AVIO_FLAG_WRITE) && h->is_streamed) {
426 ✗ if (buffer_size > INT_MAX/2)
427 ✗ return AVERROR(EINVAL);
428 ✗ buffer_size *= 2;
429 }
430 113089 buffer = av_malloc(buffer_size);
431
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 113089 if (!buffer)
432 ✗ return AVERROR(ENOMEM);
433
434 113089 *sp = avio_alloc_context(buffer, buffer_size, h->flags & AVIO_FLAG_WRITE, h,
435 ffurl_read2, ffurl_write2, ffurl_seek2);
436
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 113089 if (!*sp) {
437 ✗ av_freep(&buffer);
438 ✗ return AVERROR(ENOMEM);
439 }
440 113089 s = *sp;
441
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 113089 if (h->protocol_whitelist) {
442 110389 s->protocol_whitelist = av_strdup(h->protocol_whitelist);
443
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 110389 if (!s->protocol_whitelist) {
444 ✗ avio_closep(sp);
445 ✗ return AVERROR(ENOMEM);
446 }
447 }
448
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 113089 if (h->protocol_blacklist) {
449 ✗ s->protocol_blacklist = av_strdup(h->protocol_blacklist);
450 ✗ if (!s->protocol_blacklist) {
451 ✗ avio_closep(sp);
452 ✗ return AVERROR(ENOMEM);
453 }
454 }
455 113089 s->direct = h->flags & AVIO_FLAG_DIRECT;
456
457 113089 s->seekable = h->is_streamed ? 0 : AVIO_SEEKABLE_NORMAL;
458 113089 s->max_packet_size = max_packet_size;
459 113089 s->min_packet_size = h->min_packet_size;
460
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 113089 if(h->prot) {
461 113089 s->read_pause = h->prot->url_read_pause;
462 113089 s->read_seek = h->prot->url_read_seek;
463
464
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 113089 if (h->prot->url_read_seek)
465 ✗ s->seekable |= AVIO_SEEKABLE_TIME;
466 }
467 113089 ((FFIOContext*)s)->short_seek_get = ffurl_get_short_seek;
468 113089 s->av_class = &ff_avio_class;
469 113089 return 0;
470 }
471
472 113090 int ffio_open_whitelist(AVIOContext **s, const char *filename, int flags,
473 const AVIOInterruptCB *int_cb, AVDictionary **options,
474 const char *whitelist, const char *blacklist)
475 {
476 URLContext *h;
477 int err;
478
479 113090 *s = NULL;
480
481 113090 err = ffurl_open_whitelist(&h, filename, flags, int_cb, options, whitelist, blacklist, NULL);
482
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 113090 if (err < 0)
483 1 return err;
484 113089 err = ffio_fdopen(s, h);
485
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 113089 if (err < 0) {
486 ✗ ffurl_close(h);
487 ✗ return err;
488 }
489 113089 return 0;
490 }
491
492 8273 int avio_open2(AVIOContext **s, const char *filename, int flags,
493 const AVIOInterruptCB *int_cb, AVDictionary **options)
494 {
495 8273 return ffio_open_whitelist(s, filename, flags, int_cb, options, NULL, NULL);
496 }
497
498 100 int avio_open(AVIOContext **s, const char *filename, int flags)
499 {
500 100 return avio_open2(s, filename, flags, NULL, NULL);
501 }
502
503
504 612808 static inline int retry_transfer_wrapper(URLContext *h, uint8_t *buf,
505 const uint8_t *cbuf,
506 int size, int size_min,
507 int read)
508 {
509 int ret, len;
510 612808 int fast_retries = 5;
511 612808 int64_t wait_since = 0;
512
513 612808 len = 0;
514
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 1213357 while (len < size_min) {
515
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 612808 if (ff_check_interrupt(&h->interrupt_callback))
516 ✗ return AVERROR_EXIT;
517
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 612808 ret = read ? h->prot->url_read (h, buf + len, size - len):
518 392617 h->prot->url_write(h, cbuf + len, size - len);
519
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 612808 if (ret == AVERROR(EINTR))
520 ✗ continue;
521
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 612808 if (h->flags & AVIO_FLAG_NONBLOCK)
522 ✗ return ret;
523
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 612808 if (ret == AVERROR(EAGAIN)) {
524 ✗ ret = 0;
525 ✗ if (fast_retries) {
526 ✗ fast_retries--;
527 } else {
528 ✗ if (h->rw_timeout) {
529 ✗ if (!wait_since)
530 ✗ wait_since = av_gettime_relative();
531 ✗ else if (av_gettime_relative() > wait_since + h->rw_timeout)
532 ✗ return AVERROR(EIO);
533 }
534 ✗ av_usleep(1000);
535 }
536
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 612808 } else if (ret == AVERROR_EOF)
537
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 12259 return (len > 0) ? len : AVERROR_EOF;
538
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 600549 else if (ret < 0)
539 ✗ return ret;
540
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 600549 if (ret) {
541 600549 fast_retries = FFMAX(fast_retries, 2);
542 600549 wait_since = 0;
543 }
544 600549 len += ret;
545 }
546 600549 return len;
547 }
548
549 220191 int ffurl_read2(void *urlcontext, uint8_t *buf, int size)
550 {
551 220191 URLContext *h = urlcontext;
552
553
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 220191 if (!(h->flags & AVIO_FLAG_READ))
554 ✗ return AVERROR(EIO);
555 220191 return retry_transfer_wrapper(h, buf, NULL, size, 1, 1);
556 }
557
558 ✗ int ffurl_read_complete(URLContext *h, unsigned char *buf, int size)
559 {
560 ✗ if (!(h->flags & AVIO_FLAG_READ))
561 ✗ return AVERROR(EIO);
562 ✗ return retry_transfer_wrapper(h, buf, NULL, size, size, 1);
563 }
564
565 392617 int ffurl_write2(void *urlcontext, const uint8_t *buf, int size)
566 {
567 392617 URLContext *h = urlcontext;
568
569
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 392617 if (!(h->flags & AVIO_FLAG_WRITE))
570 ✗ return AVERROR(EIO);
571 /* avoid sending too big packets */
572
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 392617 if (h->max_packet_size && size > h->max_packet_size)
573 ✗ return AVERROR(EIO);
574
575 392617 return retry_transfer_wrapper(h, NULL, buf, size, size, 0);
576 }
577
578 360632 int64_t ffurl_seek2(void *urlcontext, int64_t pos, int whence)
579 {
580 360632 URLContext *h = urlcontext;
581 int64_t ret;
582
583
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 360632 if (!h->prot->url_seek)
584 32161 return AVERROR(ENOSYS);
585 328471 ret = h->prot->url_seek(h, pos, whence & ~AVSEEK_FORCE);
586 328471 return ret;
587 }
588
589 164329 int ffurl_closep(URLContext **hh)
590 {
591 164329 URLContext *h= *hh;
592 164329 int ret = 0;
593
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 164329 if (!h)
594 ✗ return 0; /* can happen when ffurl_open fails */
595
596
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 164329 if (h->is_connected && h->prot->url_close)
597 113482 ret = h->prot->url_close(h);
598 #if CONFIG_NETWORK
599
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 164329 if (h->prot->flags & URL_PROTOCOL_FLAG_NETWORK)
600 ✗ ff_network_close();
601 #endif
602
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 164329 if (h->prot->priv_data_size) {
603
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 164329 if (h->prot->priv_data_class)
604 161629 av_opt_free(h->priv_data);
605 164329 av_freep(&h->priv_data);
606 }
607 164329 av_opt_free(h);
608 164329 av_freep(hh);
609 164329 return ret;
610 }
611
612 164323 int ffurl_close(URLContext *h)
613 {
614 164323 return ffurl_closep(&h);
615 }
616
617 121260 int avio_close(AVIOContext *s)
618 {
619 121260 FFIOContext *const ctx = ffiocontext(s);
620 URLContext *h;
621 int ret, error;
622
623
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 121260 if (!s)
624 8171 return 0;
625
626 113089 avio_flush(s);
627 113089 h = s->opaque;
628 113089 s->opaque = NULL;
629
630 113089 av_freep(&s->buffer);
631
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 113089 if (s->write_flag)
632 9016 av_log(s, AV_LOG_VERBOSE,
633 "Statistics: %"PRId64" bytes written, %d seeks, %d writeouts\n",
634 ctx->bytes_written, ctx->seek_count, ctx->writeout_count);
635 else
636 104073 av_log(s, AV_LOG_VERBOSE, "Statistics: %"PRId64" bytes read, %d seeks\n",
637 ctx->bytes_read, ctx->seek_count);
638 113089 av_opt_free(s);
639
640 113089 error = s->error;
641 113089 avio_context_free(&s);
642
643 113089 ret = ffurl_close(h);
644
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 113089 if (ret < 0)
645 ✗ return ret;
646
647 113089 return error;
648 }
649
650 16444 int avio_closep(AVIOContext **s)
651 {
652 16444 int ret = avio_close(*s);
653 16444 *s = NULL;
654 16444 return ret;
655 }
656
657
658 9347 const char *avio_find_protocol_name(const char *url)
659 {
660 9347 const URLProtocol *p = url_find_protocol(url);
661
662
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 9347 return p ? p->name : NULL;
663 }
664
665 50690 int avio_check(const char *url, int flags)
666 {
667 URLContext *h;
668 50690 int ret = ffurl_alloc(&h, url, flags, NULL);
669
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 50690 if (ret < 0)
670 ✗ return ret;
671
672
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 50690 if (h->prot->url_check) {
673 50690 ret = h->prot->url_check(h, flags);
674 } else {
675 ✗ ret = ffurl_connect(h, NULL);
676 ✗ if (ret >= 0)
677 ✗ ret = flags;
678 }
679
680 50690 ffurl_close(h);
681 50690 return ret;
682 }
683
684 78 int ffurl_move(const char *url_src, const char *url_dst)
685 {
686 URLContext *h_src, *h_dst;
687 78 int ret = ffurl_alloc(&h_src, url_src, AVIO_FLAG_READ_WRITE, NULL);
688
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 78 if (ret < 0)
689 ✗ return ret;
690 78 ret = ffurl_alloc(&h_dst, url_dst, AVIO_FLAG_WRITE, NULL);
691
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 78 if (ret < 0) {
692 ✗ ffurl_close(h_src);
693 ✗ return ret;
694 }
695
696
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 78 if (h_src->prot == h_dst->prot && h_src->prot->url_move)
697 78 ret = h_src->prot->url_move(h_src, h_dst);
698 else
699 ✗ ret = AVERROR(ENOSYS);
700
701 78 ffurl_close(h_src);
702 78 ffurl_close(h_dst);
703 78 return ret;
704 }
705
706 ✗ int ffurl_delete(const char *url)
707 {
708 URLContext *h;
709 ✗ int ret = ffurl_alloc(&h, url, AVIO_FLAG_WRITE, NULL);
710 ✗ if (ret < 0)
711 ✗ return ret;
712
713 ✗ if (h->prot->url_delete)
714 ✗ ret = h->prot->url_delete(h);
715 else
716 ✗ ret = AVERROR(ENOSYS);
717
718 ✗ ffurl_close(h);
719 ✗ return ret;
720 }
721
722 struct AVIODirContext {
723 struct URLContext *url_context;
724 };
725
726 ✗ int avio_open_dir(AVIODirContext **s, const char *url, AVDictionary **options)
727 {
728 ✗ URLContext *h = NULL;
729 ✗ AVIODirContext *ctx = NULL;
730 int ret;
731 ✗ av_assert0(s);
732
733 ✗ ctx = av_mallocz(sizeof(*ctx));
734 ✗ if (!ctx) {
735 ✗ ret = AVERROR(ENOMEM);
736 ✗ goto fail;
737 }
738
739 ✗ if ((ret = ffurl_alloc(&h, url, AVIO_FLAG_READ, NULL)) < 0)
740 ✗ goto fail;
741
742 ✗ if (h->prot->url_open_dir && h->prot->url_read_dir && h->prot->url_close_dir) {
743 ✗ if (options && h->prot->priv_data_class &&
744 ✗ (ret = av_opt_set_dict(h->priv_data, options)) < 0)
745 ✗ goto fail;
746 ✗ ret = h->prot->url_open_dir(h);
747 } else
748 ✗ ret = AVERROR(ENOSYS);
749 ✗ if (ret < 0)
750 ✗ goto fail;
751
752 ✗ h->is_connected = 1;
753 ✗ ctx->url_context = h;
754 ✗ *s = ctx;
755 ✗ return 0;
756
757 ✗ fail:
758 ✗ av_free(ctx);
759 ✗ *s = NULL;
760 ✗ ffurl_close(h);
761 ✗ return ret;
762 }
763
764 ✗ int avio_read_dir(AVIODirContext *s, AVIODirEntry **next)
765 {
766 URLContext *h;
767 int ret;
768
769 ✗ if (!s || !s->url_context)
770 ✗ return AVERROR(EINVAL);
771 ✗ h = s->url_context;
772 ✗ if ((ret = h->prot->url_read_dir(h, next)) < 0)
773 ✗ avio_free_directory_entry(next);
774 ✗ return ret;
775 }
776
777 ✗ int avio_close_dir(AVIODirContext **s)
778 {
779 URLContext *h;
780
781 ✗ av_assert0(s);
782 ✗ if (!(*s) || !(*s)->url_context)
783 ✗ return AVERROR(EINVAL);
784 ✗ h = (*s)->url_context;
785 ✗ h->prot->url_close_dir(h);
786 ✗ ffurl_close(h);
787 ✗ av_freep(s);
788 ✗ *s = NULL;
789 ✗ return 0;
790 }
791
792 ✗ void avio_free_directory_entry(AVIODirEntry **entry)
793 {
794 ✗ if (!entry || !*entry)
795 ✗ return;
796 ✗ av_free((*entry)->name);
797 ✗ av_freep(entry);
798 }
799
800 4 int64_t ffurl_size(URLContext *h)
801 {
802 int64_t pos, size;
803
804 4 size = ffurl_seek(h, 0, AVSEEK_SIZE);
805
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 4 if (size < 0) {
806 ✗ pos = ffurl_seek(h, 0, SEEK_CUR);
807 ✗ if ((size = ffurl_seek(h, -1, SEEK_END)) < 0)
808 ✗ return size;
809 ✗ size++;
810 ✗ ffurl_seek(h, pos, SEEK_SET);
811 }
812 4 return size;
813 }
814
815 ✗ int ffurl_get_file_handle(URLContext *h)
816 {
817 ✗ if (!h || !h->prot || !h->prot->url_get_file_handle)
818 ✗ return -1;
819 ✗ return h->prot->url_get_file_handle(h);
820 }
821
822 ✗ int ffurl_get_multi_file_handle(URLContext *h, int **handles, int *numhandles)
823 {
824 ✗ if (!h || !h->prot)
825 ✗ return AVERROR(ENOSYS);
826 ✗ if (!h->prot->url_get_multi_file_handle) {
827 ✗ if (!h->prot->url_get_file_handle)
828 ✗ return AVERROR(ENOSYS);
829 ✗ *handles = av_malloc(sizeof(**handles));
830 ✗ if (!*handles)
831 ✗ return AVERROR(ENOMEM);
832 ✗ *numhandles = 1;
833 ✗ *handles[0] = h->prot->url_get_file_handle(h);
834 ✗ return 0;
835 }
836 ✗ return h->prot->url_get_multi_file_handle(h, handles, numhandles);
837 }
838
839 323514 int ffurl_get_short_seek(void *urlcontext)
840 {
841 323514 URLContext *h = urlcontext;
842
843
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 323514 if (!h || !h->prot || !h->prot->url_get_short_seek)
844 323514 return AVERROR(ENOSYS);
845 ✗ return h->prot->url_get_short_seek(h);
846 }
847
848 ✗ int ffurl_shutdown(URLContext *h, int flags)
849 {
850 ✗ if (!h || !h->prot || !h->prot->url_shutdown)
851 ✗ return AVERROR(ENOSYS);
852 ✗ return h->prot->url_shutdown(h, flags);
853 }
854
855 812020 int ff_check_interrupt(AVIOInterruptCB *cb)
856 {
857
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 812020 if (cb && cb->callback)
858 784522 return cb->callback(cb->opaque);
859 27498 return 0;
860 }
861
862 78 int ff_rename(const char *url_src, const char *url_dst, void *logctx)
863 {
864 78 int ret = ffurl_move(url_src, url_dst);
865
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 78 if (ret < 0)
866 ✗ av_log(logctx, AV_LOG_ERROR, "failed to rename file %s to %s: %s\n", url_src, url_dst, av_err2str(ret));
867 78 return ret;
868 }
869