repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * Copyright (c) 2010 Mans Rullgard | |
| 3 | * | |
| 4 | * This file is part of FFmpeg. | |
| 5 | * | |
| 6 | * FFmpeg is free software; you can redistribute it and/or | |
| 7 | * modify it under the terms of the GNU Lesser General Public | |
| 8 | * License as published by the Free Software Foundation; either | |
| 9 | * version 2.1 of the License, or (at your option) any later version. | |
| 10 | * | |
| 11 | * FFmpeg is distributed in the hope that it will be useful, | |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 | * Lesser General Public License for more details. | |
| 15 | * | |
| 16 | * You should have received a copy of the GNU Lesser General Public | |
| 17 | * License along with FFmpeg; if not, write to the Free Software | |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 19 | */ | |
| 20 | ||
| 21 | #include <stdio.h> | |
| 22 | #include "libavutil/avstring.h" | |
| 23 | #include "libavutil/md5.h" | |
| 24 | #include "libavutil/mem.h" | |
| 25 | #include "libavutil/error.h" | |
| 26 | #include "avformat.h" | |
| 27 | #include "avio.h" | |
| 28 | #include "url.h" | |
| 29 | ||
| 30 | struct MD5Context { | |
| 31 | struct AVMD5 *md5; | |
| 32 | }; | |
| 33 | ||
| 34 | static int md5_open(URLContext *h, const char *filename, int flags) | |
| 35 | { | |
| 36 | struct MD5Context *c = h->priv_data; | |
| 37 | ||
| 38 | if (!(flags & AVIO_FLAG_WRITE)) | |
| 39 | return AVERROR(EINVAL); | |
| 40 | ||
| 41 | c->md5 = av_md5_alloc(); | |
| 42 | if (!c->md5) | |
| 43 | return AVERROR(ENOMEM); | |
| 44 | av_md5_init(c->md5); | |
| 45 | ||
| 46 | return 0; | |
| 47 | } | |
| 48 | ||
| 49 | static int md5_write(URLContext *h, const unsigned char *buf, int size) | |
| 50 | { | |
| 51 | struct MD5Context *c = h->priv_data; | |
| 52 | av_md5_update(c->md5, buf, size); | |
| 53 | return size; | |
| 54 | } | |
| 55 | ||
| 56 | static int md5_close(URLContext *h) | |
| 57 | { | |
| 58 | struct MD5Context *c = h->priv_data; | |
| 59 | const char *filename = h->filename; | |
| 60 | uint8_t md5[16], buf[64]; | |
| 61 | URLContext *out; | |
| 62 | int i, err = 0; | |
| 63 | ||
| 64 | av_md5_final(c->md5, md5); | |
| 65 | for (i = 0; i < sizeof(md5); i++) | |
| 66 | snprintf(buf + i*2, 3, "%02x", md5[i]); | |
| 67 | buf[i*2] = '\n'; | |
| 68 | ||
| 69 | av_strstart(filename, "md5:", &filename); | |
| 70 | ||
| 71 | if (*filename) { | |
| 72 | err = ffurl_open(&out, filename, AVIO_FLAG_WRITE, | |
| 73 | &h->interrupt_callback, NULL); | |
| 74 | if (err) | |
| 75 | return err; | |
| 76 | err = ffurl_write(out, buf, i*2+1); | |
| 77 | ffurl_close(out); | |
| 78 | } else { | |
| 79 | if (fwrite(buf, 1, i*2+1, stdout) < i*2+1) | |
| 80 | err = AVERROR(errno); | |
| 81 | } | |
| 82 | ||
| 83 | av_freep(&c->md5); | |
| 84 | ||
| 85 | return err; | |
| 86 | } | |
| 87 | ||
| 88 | ||
| 89 | URLProtocol ff_md5_protocol = { | |
| 90 | .name = "md5", | |
| 91 | .url_open = md5_open, | |
| 92 | .url_write = md5_write, | |
| 93 | .url_close = md5_close, | |
| 94 | .priv_data_size = sizeof(struct MD5Context), | |
| 95 | }; |