/* * Copyright (c) 2002 Fabrice Bellard * Copyright (c) 2013 Michael Niedermayer * Copyright (c) 2013 James Almer * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include "config.h" #include "libavutil/avstring.h" #include "libavutil/error.h" #include "libavutil/hash.h" #include <errno.h> #include <fcntl.h> #include <stdio.h> #include <string.h> #include <sys/stat.h> #if HAVE_IO_H #include <io.h> #endif #if HAVE_UNISTD_H #include <unistd.h> #endif #define SIZE 65536 static struct AVHashContext *hash; static int out_b64; static void usage(void) { int i = 0; const char *name; printf("usage: ffhash [b64:]algorithm [input]...\n"); printf("Supported hash algorithms:"); do { name = av_hash_names(i); if (name) printf(" %s", name); i++; } while(name); printf("\n"); } static void finish(void) { char res[2 * AV_HASH_MAX_SIZE + 4]; printf("%s=", av_hash_get_name(hash)); if (out_b64) { av_hash_final_b64(hash, res, sizeof(res)); printf("b64:%s", res); } else { av_hash_final_hex(hash, res, sizeof(res)); printf("0x%s", res); } } static int check(char *file) { uint8_t buffer[SIZE]; int fd, flags = O_RDONLY; int ret = 0; #ifdef O_BINARY flags |= O_BINARY; #endif if (file) fd = open(file, flags); else fd = 0; if (fd == -1) { printf("%s=OPEN-FAILED: %s:", av_hash_get_name(hash), strerror(errno)); ret = 1; goto end; } av_hash_init(hash); for (;;) { int size = read(fd, buffer, SIZE); if (size < 0) { int err = errno; close(fd); finish(); printf("+READ-FAILED: %s", strerror(err)); ret = 2; goto end; } else if(!size) break; av_hash_update(hash, buffer, size); } close(fd); finish(); end: if (file) printf(" *%s", file); printf("\n"); return ret; } int main(int argc, char **argv) { int i; int ret = 0; const char *hash_name; if (argc == 1) { usage(); return 0; } hash_name = argv[1]; out_b64 = av_strstart(hash_name, "b64:", &hash_name); if ((ret = av_hash_alloc(&hash, hash_name)) < 0) { switch(ret) { case AVERROR(EINVAL): printf("Invalid hash type: %s\n", hash_name); break; case AVERROR(ENOMEM): printf("%s\n", strerror(errno)); break; } return 1; } for (i = 2; i < argc; i++) ret |= check(argv[i]); if (argc < 3) ret |= check(NULL); av_hash_freep(&hash); return ret; }