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1 | /* |
2 | * Copyright (c) 2002 Fabrice Bellard | |
3 | * Copyright (c) 2013 Michael Niedermayer | |
4 | * Copyright (c) 2013 James Almer | |
5 | * | |
6 | * This file is part of FFmpeg. | |
7 | * | |
8 | * FFmpeg is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU Lesser General Public | |
10 | * License as published by the Free Software Foundation; either | |
11 | * version 2.1 of the License, or (at your option) any later version. | |
12 | * | |
13 | * FFmpeg is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * Lesser General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU Lesser General Public | |
19 | * License along with FFmpeg; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
21 | */ | |
22 | ||
23 | #include "config.h" | |
24 | #include "libavutil/avstring.h" | |
25 | #include "libavutil/error.h" | |
26 | #include "libavutil/hash.h" | |
27 | #include "libavutil/mem.h" | |
28 | ||
29 | #include <errno.h> | |
30 | #include <fcntl.h> | |
31 | #include <stdio.h> | |
32 | #include <sys/stat.h> | |
33 | ||
34 | #if HAVE_IO_H | |
35 | #include <io.h> | |
36 | #endif | |
37 | #if HAVE_UNISTD_H | |
38 | #include <unistd.h> | |
39 | #endif | |
40 | ||
41 | #define SIZE 65536 | |
42 | ||
43 | static struct AVHashContext *hash; | |
44 | static int out_b64; | |
45 | ||
46 | static void usage(void) | |
47 | { | |
48 | int i = 0; | |
49 | const char *name; | |
50 | ||
51 | printf("usage: ffhash [b64:]algorithm [input]...\n"); | |
52 | printf("Supported hash algorithms:"); | |
53 | do { | |
54 | name = av_hash_names(i); | |
55 | if (name) | |
56 | printf(" %s", name); | |
57 | i++; | |
58 | } while(name); | |
59 | printf("\n"); | |
60 | } | |
61 | ||
62 | static void finish(void) | |
63 | { | |
64 | char res[2 * AV_HASH_MAX_SIZE + 4]; | |
65 | ||
66 | printf("%s=", av_hash_get_name(hash)); | |
67 | if (out_b64) { | |
68 | av_hash_final_b64(hash, res, sizeof(res)); | |
69 | printf("b64:%s", res); | |
70 | } else { | |
71 | av_hash_final_hex(hash, res, sizeof(res)); | |
72 | printf("0x%s", res); | |
73 | } | |
74 | } | |
75 | ||
76 | static int check(char *file) | |
77 | { | |
78 | uint8_t buffer[SIZE]; | |
79 | int fd, flags = O_RDONLY; | |
80 | int ret = 0; | |
81 | ||
82 | #ifdef O_BINARY | |
83 | flags |= O_BINARY; | |
84 | #endif | |
85 | if (file) fd = open(file, flags); | |
86 | else fd = 0; | |
87 | if (fd == -1) { | |
88 | printf("%s=OPEN-FAILED: %s:", av_hash_get_name(hash), strerror(errno)); | |
89 | ret = 1; | |
90 | goto end; | |
91 | } | |
92 | ||
93 | av_hash_init(hash); | |
94 | for (;;) { | |
95 | int size = read(fd, buffer, SIZE); | |
96 | if (size < 0) { | |
97 | close(fd); | |
98 | finish(); | |
99 | printf("+READ-FAILED: %s", strerror(errno)); | |
100 | ret = 2; | |
101 | goto end; | |
102 | } else if(!size) | |
103 | break; | |
104 | av_hash_update(hash, buffer, size); | |
105 | } | |
106 | close(fd); | |
107 | ||
108 | finish(); | |
109 | end: | |
110 | if (file) | |
111 | printf(" *%s", file); | |
112 | printf("\n"); | |
113 | ||
114 | return ret; | |
115 | } | |
116 | ||
117 | int main(int argc, char **argv) | |
118 | { | |
119 | int i; | |
120 | int ret = 0; | |
121 | const char *hash_name; | |
122 | ||
123 | if (argc == 1) { | |
124 | usage(); | |
125 | return 0; | |
126 | } | |
127 | ||
128 | hash_name = argv[1]; | |
129 | out_b64 = av_strstart(hash_name, "b64:", &hash_name); | |
130 | if ((ret = av_hash_alloc(&hash, hash_name)) < 0) { | |
131 | switch(ret) { | |
132 | case AVERROR(EINVAL): | |
133 | printf("Invalid hash type: %s\n", hash_name); | |
134 | break; | |
135 | case AVERROR(ENOMEM): | |
136 | printf("%s\n", strerror(errno)); | |
137 | break; | |
138 | } | |
139 | return 1; | |
140 | } | |
141 | ||
142 | for (i = 2; i < argc; i++) | |
143 | ret |= check(argv[i]); | |
144 | ||
145 | if (argc < 3) | |
146 | ret |= check(NULL); | |
147 | ||
148 | av_hash_freep(&hash); | |
149 | ||
150 | return ret; | |
151 | } |