blob: 69425277323ed2289b9c04b1740dbd0b4e4c1ed5
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 | int err = errno; |
98 | close(fd); |
99 | finish(); |
100 | printf("+READ-FAILED: %s", strerror(err)); |
101 | ret = 2; |
102 | goto end; |
103 | } else if(!size) |
104 | break; |
105 | av_hash_update(hash, buffer, size); |
106 | } |
107 | close(fd); |
108 | |
109 | finish(); |
110 | end: |
111 | if (file) |
112 | printf(" *%s", file); |
113 | printf("\n"); |
114 | |
115 | return ret; |
116 | } |
117 | |
118 | int main(int argc, char **argv) |
119 | { |
120 | int i; |
121 | int ret = 0; |
122 | const char *hash_name; |
123 | |
124 | if (argc == 1) { |
125 | usage(); |
126 | return 0; |
127 | } |
128 | |
129 | hash_name = argv[1]; |
130 | out_b64 = av_strstart(hash_name, "b64:", &hash_name); |
131 | if ((ret = av_hash_alloc(&hash, hash_name)) < 0) { |
132 | switch(ret) { |
133 | case AVERROR(EINVAL): |
134 | printf("Invalid hash type: %s\n", hash_name); |
135 | break; |
136 | case AVERROR(ENOMEM): |
137 | printf("%s\n", strerror(errno)); |
138 | break; |
139 | } |
140 | return 1; |
141 | } |
142 | |
143 | for (i = 2; i < argc; i++) |
144 | ret |= check(argv[i]); |
145 | |
146 | if (argc < 3) |
147 | ret |= check(NULL); |
148 | |
149 | av_hash_freep(&hash); |
150 | |
151 | return ret; |
152 | } |
153 |