FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavformat/md5proto.c
Date: 2022-11-26 13:19:19
Exec Total Coverage
Lines: 23 32 71.9%
Branches: 4 10 40.0%

Line Branch Exec Source
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 "internal.h"
29 #include "url.h"
30
31 struct MD5Context {
32 struct AVMD5 *md5;
33 };
34
35 2321 static int md5_open(URLContext *h, const char *filename, int flags)
36 {
37 2321 struct MD5Context *c = h->priv_data;
38
39
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2321 if (!(flags & AVIO_FLAG_WRITE))
40 return AVERROR(EINVAL);
41
42 2321 c->md5 = av_md5_alloc();
43
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2321 if (!c->md5)
44 return AVERROR(ENOMEM);
45 2321 av_md5_init(c->md5);
46
47 2321 return 0;
48 }
49
50 82161 static int md5_write(URLContext *h, const unsigned char *buf, int size)
51 {
52 82161 struct MD5Context *c = h->priv_data;
53 82161 av_md5_update(c->md5, buf, size);
54 82161 return size;
55 }
56
57 2321 static int md5_close(URLContext *h)
58 {
59 2321 struct MD5Context *c = h->priv_data;
60 2321 const char *filename = h->filename;
61 uint8_t md5[16], buf[2 * sizeof(md5) + 1];
62 URLContext *out;
63 2321 int err = 0;
64
65 2321 av_md5_final(c->md5, md5);
66 2321 ff_data_to_hex(buf, md5, sizeof(md5), 1);
67 2321 buf[2 * sizeof(md5)] = '\n';
68
69 2321 av_strstart(filename, "md5:", &filename);
70
71
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2321 if (*filename) {
72 err = ffurl_open_whitelist(&out, filename, AVIO_FLAG_WRITE,
73 &h->interrupt_callback, NULL,
74 h->protocol_whitelist, h->protocol_blacklist, h);
75 if (err)
76 return err;
77 err = ffurl_write(out, buf, sizeof(buf));
78 ffurl_close(out);
79 } else {
80
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2321 if (fwrite(buf, 1, sizeof(buf), stdout) < sizeof(buf))
81 err = AVERROR(errno);
82 }
83
84 2321 av_freep(&c->md5);
85
86 2321 return err;
87 }
88
89
90 const URLProtocol ff_md5_protocol = {
91 .name = "md5",
92 .url_open = md5_open,
93 .url_write = md5_write,
94 .url_close = md5_close,
95 .priv_data_size = sizeof(struct MD5Context),
96 };
97