FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavformat/avio.c
Date: 2024-11-20 23:03:26
Exec Total Coverage
Lines: 263 486 54.1%
Functions: 28 42 66.7%
Branches: 155 364 42.6%
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 35328 static void *urlcontext_child_next(void *obj, void *prev)
50 {
51 35328 URLContext *h = obj;
52
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 35328 if (!prev && h->priv_data && h->prot->priv_data_class)
53 17662 return h->priv_data;
54 17666 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 35320 static void *avio_child_next(void *obj, void *prev)
78 {
79 35320 AVIOContext *s = obj;
80
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 35320 return prev ? NULL : s->opaque;
81 }
82
83 220125 static const AVClass *child_class_iterate(void **iter)
84 {
85
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 220125 const AVClass *c = *iter ? NULL : &url_context_class;
86 220125 *iter = (void*)(uintptr_t)c;
87 220125 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 163105 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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 163105 if (up->flags & URL_PROTOCOL_FLAG_NETWORK && !ff_network_init())
127 ✗ return AVERROR(EIO);
128 #endif
129
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 163105 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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 163105 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 163105 uc = av_mallocz(sizeof(URLContext) + strlen(filename) + 1);
140
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 163105 if (!uc) {
141 ✗ err = AVERROR(ENOMEM);
142 ✗ goto fail;
143 }
144 163105 uc->av_class = &url_context_class;
145 163105 uc->filename = (char *)&uc[1];
146 163105 strcpy(uc->filename, filename);
147 163105 uc->prot = up;
148 163105 uc->flags = flags;
149 163105 uc->is_streamed = 0; /* default = not streamed */
150 163105 uc->max_packet_size = 0; /* default: stream file */
151
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 163105 if (up->priv_data_size) {
152 163105 uc->priv_data = av_mallocz(up->priv_data_size);
153
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 163105 if (!uc->priv_data) {
154 ✗ err = AVERROR(ENOMEM);
155 ✗ goto fail;
156 }
157
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 163105 if (up->priv_data_class) {
158 char *start;
159 160421 *(const AVClass **)uc->priv_data = up->priv_data_class;
160 160421 av_opt_set_defaults(uc->priv_data);
161
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 160421 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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 163105 if (int_cb)
189 112436 uc->interrupt_callback = *int_cb;
190
191 163105 *puc = uc;
192 163105 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 112531 int ffurl_connect(URLContext *uc, AVDictionary **options)
206 {
207 int err;
208 112531 AVDictionary *tmp_opts = NULL;
209 AVDictionaryEntry *e;
210
211
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 112531 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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 112531 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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 112531 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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 112531 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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 112531 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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 112531 if (!uc->protocol_whitelist && uc->prot->default_whitelist) {
231 109710 av_log(uc, AV_LOG_DEBUG, "Setting default whitelist '%s'\n", uc->prot->default_whitelist);
232 109710 uc->protocol_whitelist = av_strdup(uc->prot->default_whitelist);
233
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 109710 if (!uc->protocol_whitelist) {
234 ✗ return AVERROR(ENOMEM);
235 }
236
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 2821 } else if (!uc->protocol_whitelist)
237 2684 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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 112531 if ((err = av_dict_set(options, "protocol_whitelist", uc->protocol_whitelist, 0)) < 0)
240 ✗ return err;
241
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 112531 if ((err = av_dict_set(options, "protocol_blacklist", uc->protocol_blacklist, 0)) < 0)
242 ✗ return err;
243
244 112531 err =
245 112532 uc->prot->url_open2 ? uc->prot->url_open2(uc,
246 1 uc->filename,
247 uc->flags,
248
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 112531 options) :
249 112530 uc->prot->url_open(uc, uc->filename, uc->flags);
250
251 112531 av_dict_set(options, "protocol_whitelist", NULL, 0);
252 112531 av_dict_set(options, "protocol_blacklist", NULL, 0);
253
254
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 112531 if (err)
255 1 return err;
256 112530 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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 112530 if ((uc->flags & AVIO_FLAG_WRITE) || !strcmp(uc->prot->name, "file"))
260
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 112527 if (!uc->is_streamed && ffurl_seek(uc, 0, SEEK_SET) < 0)
261 2683 uc->is_streamed = 1;
262 112530 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 172100 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 172100 size_t proto_len = strspn(filename, URL_SCHEME_CHARS);
312 int i;
313
314
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 172100 if (filename[proto_len] != ':' &&
315
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 172100 (strncmp(filename, "subfile,", 8) || !strchr(filename + proto_len + 1, ':')) ||
316 10655 is_dos_path(filename))
317 161445 strcpy(proto_str, "file");
318 else
319 10655 av_strlcpy(proto_str, filename,
320 10655 FFMIN(proto_len + 1, sizeof(proto_str)));
321
322 172100 av_strlcpy(proto_nested, proto_str, sizeof(proto_nested));
323
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 172100 if ((ptr = strchr(proto_nested, '+')))
324 ✗ *ptr = '\0';
325
326 172100 protocols = ffurl_get_protocols(NULL, NULL);
327
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 172100 if (!protocols)
328 ✗ return NULL;
329
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 1650052 for (i = 0; protocols[i]; i++) {
330 1650052 const URLProtocol *up = protocols[i];
331
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 1650052 if (!strcmp(proto_str, up->name)) {
332 172100 av_freep(&protocols);
333 172100 return up;
334 }
335
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 1477952 if (up->flags & URL_PROTOCOL_FLAG_NESTED_SCHEME &&
336
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 182751 !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_log(NULL, AV_LOG_WARNING, "https protocol not found, recompile FFmpeg with "
344 "openssl, gnutls or securetransport enabled.\n");
345
346 ✗ return NULL;
347 }
348
349 163105 int ffurl_alloc(URLContext **puc, const char *filename, int flags,
350 const AVIOInterruptCB *int_cb)
351 {
352 163105 const URLProtocol *p = NULL;
353
354 163105 p = url_find_protocol(filename);
355
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 163105 if (p)
356 163105 return url_alloc_for_protocol(puc, p, filename, flags, int_cb);
357
358 ✗ *puc = NULL;
359 ✗ return AVERROR_PROTOCOL_NOT_FOUND;
360 }
361
362 112531 int ffurl_open_whitelist(URLContext **puc, const char *filename, int flags,
363 const AVIOInterruptCB *int_cb, AVDictionary **options,
364 const char *whitelist, const char* blacklist,
365 URLContext *parent)
366 {
367 112531 AVDictionary *tmp_opts = NULL;
368 AVDictionaryEntry *e;
369 112531 int ret = ffurl_alloc(puc, filename, flags, int_cb);
370
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 112531 if (ret < 0)
371 ✗ return ret;
372
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 112531 if (parent) {
373 389 ret = av_opt_copy(*puc, parent);
374
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 389 if (ret < 0)
375 ✗ goto fail;
376 }
377
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 125705 if (options &&
378 13174 (ret = av_opt_set_dict(*puc, options)) < 0)
379 ✗ goto fail;
380
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 123021 if (options && (*puc)->prot->priv_data_class &&
381 10490 (ret = av_opt_set_dict((*puc)->priv_data, options)) < 0)
382 ✗ goto fail;
383
384
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 112531 if (!options)
385 99357 options = &tmp_opts;
386
387
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 112531 av_assert0(!whitelist ||
388 !(e=av_dict_get(*options, "protocol_whitelist", NULL, 0)) ||
389 !strcmp(whitelist, e->value));
390
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 112531 av_assert0(!blacklist ||
391 !(e=av_dict_get(*options, "protocol_blacklist", NULL, 0)) ||
392 !strcmp(blacklist, e->value));
393
394
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 112531 if ((ret = av_dict_set(options, "protocol_whitelist", whitelist, 0)) < 0)
395 ✗ goto fail;
396
397
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 112531 if ((ret = av_dict_set(options, "protocol_blacklist", blacklist, 0)) < 0)
398 ✗ goto fail;
399
400
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 112531 if ((ret = av_opt_set_dict(*puc, options)) < 0)
401 ✗ goto fail;
402
403 112531 ret = ffurl_connect(*puc, options);
404
405
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 112531 if (!ret)
406 112530 return 0;
407 1 fail:
408 1 ffurl_closep(puc);
409 1 return ret;
410 }
411
412 112141 int ffio_fdopen(AVIOContext **sp, URLContext *h)
413 {
414 AVIOContext *s;
415 112141 uint8_t *buffer = NULL;
416 int buffer_size, max_packet_size;
417
418 112141 max_packet_size = h->max_packet_size;
419
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 112141 if (max_packet_size) {
420 3328 buffer_size = max_packet_size; /* no need to bufferize more than one packet */
421 } else {
422 108813 buffer_size = IO_BUFFER_SIZE;
423 }
424
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 112141 if (!(h->flags & AVIO_FLAG_WRITE) && h->is_streamed) {
425 ✗ if (buffer_size > INT_MAX/2)
426 ✗ return AVERROR(EINVAL);
427 ✗ buffer_size *= 2;
428 }
429 112141 buffer = av_malloc(buffer_size);
430
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 112141 if (!buffer)
431 ✗ return AVERROR(ENOMEM);
432
433 112141 *sp = avio_alloc_context(buffer, buffer_size, h->flags & AVIO_FLAG_WRITE, h,
434 ffurl_read2, ffurl_write2, ffurl_seek2);
435
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 112141 if (!*sp) {
436 ✗ av_freep(&buffer);
437 ✗ return AVERROR(ENOMEM);
438 }
439 112141 s = *sp;
440
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 112141 if (h->protocol_whitelist) {
441 109457 s->protocol_whitelist = av_strdup(h->protocol_whitelist);
442
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 109457 if (!s->protocol_whitelist) {
443 ✗ avio_closep(sp);
444 ✗ return AVERROR(ENOMEM);
445 }
446 }
447
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 112141 if (h->protocol_blacklist) {
448 ✗ s->protocol_blacklist = av_strdup(h->protocol_blacklist);
449 ✗ if (!s->protocol_blacklist) {
450 ✗ avio_closep(sp);
451 ✗ return AVERROR(ENOMEM);
452 }
453 }
454 112141 s->direct = h->flags & AVIO_FLAG_DIRECT;
455
456 112141 s->seekable = h->is_streamed ? 0 : AVIO_SEEKABLE_NORMAL;
457 112141 s->max_packet_size = max_packet_size;
458 112141 s->min_packet_size = h->min_packet_size;
459
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 112141 if(h->prot) {
460 112141 s->read_pause = h->prot->url_read_pause;
461 112141 s->read_seek = h->prot->url_read_seek;
462
463
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 112141 if (h->prot->url_read_seek)
464 ✗ s->seekable |= AVIO_SEEKABLE_TIME;
465 }
466 112141 ((FFIOContext*)s)->short_seek_get = ffurl_get_short_seek;
467 112141 s->av_class = &ff_avio_class;
468 112141 return 0;
469 }
470
471 112142 int ffio_open_whitelist(AVIOContext **s, const char *filename, int flags,
472 const AVIOInterruptCB *int_cb, AVDictionary **options,
473 const char *whitelist, const char *blacklist)
474 {
475 URLContext *h;
476 int err;
477
478 112142 *s = NULL;
479
480 112142 err = ffurl_open_whitelist(&h, filename, flags, int_cb, options, whitelist, blacklist, NULL);
481
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 112142 if (err < 0)
482 1 return err;
483 112141 err = ffio_fdopen(s, h);
484
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 112141 if (err < 0) {
485 ✗ ffurl_close(h);
486 ✗ return err;
487 }
488 112141 return 0;
489 }
490
491 7920 int avio_open2(AVIOContext **s, const char *filename, int flags,
492 const AVIOInterruptCB *int_cb, AVDictionary **options)
493 {
494 7920 return ffio_open_whitelist(s, filename, flags, int_cb, options, NULL, NULL);
495 }
496
497 95 int avio_open(AVIOContext **s, const char *filename, int flags)
498 {
499 95 return avio_open2(s, filename, flags, NULL, NULL);
500 }
501
502
503 595416 static inline int retry_transfer_wrapper(URLContext *h, uint8_t *buf,
504 const uint8_t *cbuf,
505 int size, int size_min,
506 int read)
507 {
508 int ret, len;
509 595416 int fast_retries = 5;
510 595416 int64_t wait_since = 0;
511
512 595416 len = 0;
513
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 1178682 while (len < size_min) {
514
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 595416 if (ff_check_interrupt(&h->interrupt_callback))
515 ✗ return AVERROR_EXIT;
516
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 595416 ret = read ? h->prot->url_read (h, buf + len, size - len):
517 376811 h->prot->url_write(h, cbuf + len, size - len);
518
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 595416 if (ret == AVERROR(EINTR))
519 ✗ continue;
520
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 595416 if (h->flags & AVIO_FLAG_NONBLOCK)
521 ✗ return ret;
522
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 595416 if (ret == AVERROR(EAGAIN)) {
523 ✗ ret = 0;
524 ✗ if (fast_retries) {
525 ✗ fast_retries--;
526 } else {
527 ✗ if (h->rw_timeout) {
528 ✗ if (!wait_since)
529 ✗ wait_since = av_gettime_relative();
530 ✗ else if (av_gettime_relative() > wait_since + h->rw_timeout)
531 ✗ return AVERROR(EIO);
532 }
533 ✗ av_usleep(1000);
534 }
535
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 595416 } else if (ret == AVERROR_EOF)
536
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 12150 return (len > 0) ? len : AVERROR_EOF;
537
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 583266 else if (ret < 0)
538 ✗ return ret;
539
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 583266 if (ret) {
540 583266 fast_retries = FFMAX(fast_retries, 2);
541 583266 wait_since = 0;
542 }
543 583266 len += ret;
544 }
545 583266 return len;
546 }
547
548 218605 int ffurl_read2(void *urlcontext, uint8_t *buf, int size)
549 {
550 218605 URLContext *h = urlcontext;
551
552
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 218605 if (!(h->flags & AVIO_FLAG_READ))
553 ✗ return AVERROR(EIO);
554 218605 return retry_transfer_wrapper(h, buf, NULL, size, 1, 1);
555 }
556
557 ✗ int ffurl_read_complete(URLContext *h, unsigned char *buf, int size)
558 {
559 ✗ if (!(h->flags & AVIO_FLAG_READ))
560 ✗ return AVERROR(EIO);
561 ✗ return retry_transfer_wrapper(h, buf, NULL, size, size, 1);
562 }
563
564 376811 int ffurl_write2(void *urlcontext, const uint8_t *buf, int size)
565 {
566 376811 URLContext *h = urlcontext;
567
568
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 376811 if (!(h->flags & AVIO_FLAG_WRITE))
569 ✗ return AVERROR(EIO);
570 /* avoid sending too big packets */
571
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 376811 if (h->max_packet_size && size > h->max_packet_size)
572 ✗ return AVERROR(EIO);
573
574 376811 return retry_transfer_wrapper(h, NULL, buf, size, size, 0);
575 }
576
577 358507 int64_t ffurl_seek2(void *urlcontext, int64_t pos, int whence)
578 {
579 358507 URLContext *h = urlcontext;
580 int64_t ret;
581
582
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 358507 if (!h->prot->url_seek)
583 32127 return AVERROR(ENOSYS);
584 326380 ret = h->prot->url_seek(h, pos, whence & ~AVSEEK_FORCE);
585 326380 return ret;
586 }
587
588 163105 int ffurl_closep(URLContext **hh)
589 {
590 163105 URLContext *h= *hh;
591 163105 int ret = 0;
592
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 163105 if (!h)
593 ✗ return 0; /* can happen when ffurl_open fails */
594
595
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 163105 if (h->is_connected && h->prot->url_close)
596 112530 ret = h->prot->url_close(h);
597 #if CONFIG_NETWORK
598
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 163105 if (h->prot->flags & URL_PROTOCOL_FLAG_NETWORK)
599 ✗ ff_network_close();
600 #endif
601
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 163105 if (h->prot->priv_data_size) {
602
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 163105 if (h->prot->priv_data_class)
603 160421 av_opt_free(h->priv_data);
604 163105 av_freep(&h->priv_data);
605 }
606 163105 av_opt_free(h);
607 163105 av_freep(hh);
608 163105 return ret;
609 }
610
611 163099 int ffurl_close(URLContext *h)
612 {
613 163099 return ffurl_closep(&h);
614 }
615
616 123012 int avio_close(AVIOContext *s)
617 {
618 123012 FFIOContext *const ctx = ffiocontext(s);
619 URLContext *h;
620 int ret, error;
621
622
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 123012 if (!s)
623 10871 return 0;
624
625 112141 avio_flush(s);
626 112141 h = s->opaque;
627 112141 s->opaque = NULL;
628
629 112141 av_freep(&s->buffer);
630
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 112141 if (s->write_flag)
631 8668 av_log(s, AV_LOG_VERBOSE,
632 "Statistics: %"PRId64" bytes written, %d seeks, %d writeouts\n",
633 ctx->bytes_written, ctx->seek_count, ctx->writeout_count);
634 else
635 103473 av_log(s, AV_LOG_VERBOSE, "Statistics: %"PRId64" bytes read, %d seeks\n",
636 ctx->bytes_read, ctx->seek_count);
637 112141 av_opt_free(s);
638
639 112141 error = s->error;
640 112141 avio_context_free(&s);
641
642 112141 ret = ffurl_close(h);
643
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 112141 if (ret < 0)
644 ✗ return ret;
645
646 112141 return error;
647 }
648
649 15743 int avio_closep(AVIOContext **s)
650 {
651 15743 int ret = avio_close(*s);
652 15743 *s = NULL;
653 15743 return ret;
654 }
655
656
657 8995 const char *avio_find_protocol_name(const char *url)
658 {
659 8995 const URLProtocol *p = url_find_protocol(url);
660
661
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 8995 return p ? p->name : NULL;
662 }
663
664 50418 int avio_check(const char *url, int flags)
665 {
666 URLContext *h;
667 50418 int ret = ffurl_alloc(&h, url, flags, NULL);
668
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 50418 if (ret < 0)
669 ✗ return ret;
670
671
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 50418 if (h->prot->url_check) {
672 50418 ret = h->prot->url_check(h, flags);
673 } else {
674 ✗ ret = ffurl_connect(h, NULL);
675 ✗ if (ret >= 0)
676 ✗ ret = flags;
677 }
678
679 50418 ffurl_close(h);
680 50418 return ret;
681 }
682
683 78 int ffurl_move(const char *url_src, const char *url_dst)
684 {
685 URLContext *h_src, *h_dst;
686 78 int ret = ffurl_alloc(&h_src, url_src, AVIO_FLAG_READ_WRITE, NULL);
687
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 78 if (ret < 0)
688 ✗ return ret;
689 78 ret = ffurl_alloc(&h_dst, url_dst, AVIO_FLAG_WRITE, NULL);
690
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 78 if (ret < 0) {
691 ✗ ffurl_close(h_src);
692 ✗ return ret;
693 }
694
695
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 78 if (h_src->prot == h_dst->prot && h_src->prot->url_move)
696 78 ret = h_src->prot->url_move(h_src, h_dst);
697 else
698 ✗ ret = AVERROR(ENOSYS);
699
700 78 ffurl_close(h_src);
701 78 ffurl_close(h_dst);
702 78 return ret;
703 }
704
705 ✗ int ffurl_delete(const char *url)
706 {
707 URLContext *h;
708 ✗ int ret = ffurl_alloc(&h, url, AVIO_FLAG_WRITE, NULL);
709 ✗ if (ret < 0)
710 ✗ return ret;
711
712 ✗ if (h->prot->url_delete)
713 ✗ ret = h->prot->url_delete(h);
714 else
715 ✗ ret = AVERROR(ENOSYS);
716
717 ✗ ffurl_close(h);
718 ✗ return ret;
719 }
720
721 struct AVIODirContext {
722 struct URLContext *url_context;
723 };
724
725 ✗ int avio_open_dir(AVIODirContext **s, const char *url, AVDictionary **options)
726 {
727 ✗ URLContext *h = NULL;
728 ✗ AVIODirContext *ctx = NULL;
729 int ret;
730 ✗ av_assert0(s);
731
732 ✗ ctx = av_mallocz(sizeof(*ctx));
733 ✗ if (!ctx) {
734 ✗ ret = AVERROR(ENOMEM);
735 ✗ goto fail;
736 }
737
738 ✗ if ((ret = ffurl_alloc(&h, url, AVIO_FLAG_READ, NULL)) < 0)
739 ✗ goto fail;
740
741 ✗ if (h->prot->url_open_dir && h->prot->url_read_dir && h->prot->url_close_dir) {
742 ✗ if (options && h->prot->priv_data_class &&
743 ✗ (ret = av_opt_set_dict(h->priv_data, options)) < 0)
744 ✗ goto fail;
745 ✗ ret = h->prot->url_open_dir(h);
746 } else
747 ✗ ret = AVERROR(ENOSYS);
748 ✗ if (ret < 0)
749 ✗ goto fail;
750
751 ✗ h->is_connected = 1;
752 ✗ ctx->url_context = h;
753 ✗ *s = ctx;
754 ✗ return 0;
755
756 ✗ fail:
757 ✗ av_free(ctx);
758 ✗ *s = NULL;
759 ✗ ffurl_close(h);
760 ✗ return ret;
761 }
762
763 ✗ int avio_read_dir(AVIODirContext *s, AVIODirEntry **next)
764 {
765 URLContext *h;
766 int ret;
767
768 ✗ if (!s || !s->url_context)
769 ✗ return AVERROR(EINVAL);
770 ✗ h = s->url_context;
771 ✗ if ((ret = h->prot->url_read_dir(h, next)) < 0)
772 ✗ avio_free_directory_entry(next);
773 ✗ return ret;
774 }
775
776 ✗ int avio_close_dir(AVIODirContext **s)
777 {
778 URLContext *h;
779
780 ✗ av_assert0(s);
781 ✗ if (!(*s) || !(*s)->url_context)
782 ✗ return AVERROR(EINVAL);
783 ✗ h = (*s)->url_context;
784 ✗ h->prot->url_close_dir(h);
785 ✗ ffurl_close(h);
786 ✗ av_freep(s);
787 ✗ *s = NULL;
788 ✗ return 0;
789 }
790
791 ✗ void avio_free_directory_entry(AVIODirEntry **entry)
792 {
793 ✗ if (!entry || !*entry)
794 ✗ return;
795 ✗ av_free((*entry)->name);
796 ✗ av_freep(entry);
797 }
798
799 4 int64_t ffurl_size(URLContext *h)
800 {
801 int64_t pos, size;
802
803 4 size = ffurl_seek(h, 0, AVSEEK_SIZE);
804
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 4 if (size < 0) {
805 ✗ pos = ffurl_seek(h, 0, SEEK_CUR);
806 ✗ if ((size = ffurl_seek(h, -1, SEEK_END)) < 0)
807 ✗ return size;
808 ✗ size++;
809 ✗ ffurl_seek(h, pos, SEEK_SET);
810 }
811 4 return size;
812 }
813
814 ✗ int ffurl_get_file_handle(URLContext *h)
815 {
816 ✗ if (!h || !h->prot || !h->prot->url_get_file_handle)
817 ✗ return -1;
818 ✗ return h->prot->url_get_file_handle(h);
819 }
820
821 ✗ int ffurl_get_multi_file_handle(URLContext *h, int **handles, int *numhandles)
822 {
823 ✗ if (!h || !h->prot)
824 ✗ return AVERROR(ENOSYS);
825 ✗ if (!h->prot->url_get_multi_file_handle) {
826 ✗ if (!h->prot->url_get_file_handle)
827 ✗ return AVERROR(ENOSYS);
828 ✗ *handles = av_malloc(sizeof(**handles));
829 ✗ if (!*handles)
830 ✗ return AVERROR(ENOMEM);
831 ✗ *numhandles = 1;
832 ✗ *handles[0] = h->prot->url_get_file_handle(h);
833 ✗ return 0;
834 }
835 ✗ return h->prot->url_get_multi_file_handle(h, handles, numhandles);
836 }
837
838 322651 int ffurl_get_short_seek(void *urlcontext)
839 {
840 322651 URLContext *h = urlcontext;
841
842
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 322651 if (!h || !h->prot || !h->prot->url_get_short_seek)
843 322651 return AVERROR(ENOSYS);
844 ✗ return h->prot->url_get_short_seek(h);
845 }
846
847 ✗ int ffurl_shutdown(URLContext *h, int flags)
848 {
849 ✗ if (!h || !h->prot || !h->prot->url_shutdown)
850 ✗ return AVERROR(ENOSYS);
851 ✗ return h->prot->url_shutdown(h, flags);
852 }
853
854 794873 int ff_check_interrupt(AVIOInterruptCB *cb)
855 {
856
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 794873 if (cb && cb->callback)
857 768041 return cb->callback(cb->opaque);
858 26832 return 0;
859 }
860
861 78 int ff_rename(const char *url_src, const char *url_dst, void *logctx)
862 {
863 78 int ret = ffurl_move(url_src, url_dst);
864
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 78 if (ret < 0)
865 ✗ av_log(logctx, AV_LOG_ERROR, "failed to rename file %s to %s: %s\n", url_src, url_dst, av_err2str(ret));
866 78 return ret;
867 }
868