| 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 | } |