2 * Copyright (C) 2003 Glenn L. McGrath
3 * Copyright (C) 2003-2004 Erik Andersen
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
35 /* This might be useful elsewhere */
36 static unsigned char *hash_bin_to_hex(unsigned char *hash_value,
37 unsigned char hash_length)
40 unsigned char *hex_value;
42 max = (hash_length * 2) + 2;
43 hex_value = xmalloc(max);
44 for (x = len = 0; x < hash_length; x++) {
45 len += snprintf((char*)(hex_value + len), max - len, "%02x", hash_value[x]);
50 static uint8_t *hash_file(const char *filename, uint8_t hash_algo)
52 int src_fd = strcmp(filename, "-") == 0 ? STDIN_FILENO :
53 open(filename, O_RDONLY);
55 bb_perror_msg("%s", filename);
59 RESERVE_CONFIG_UBUFFER(hash_value_bin, 20);
60 hash_value = hash_fd(src_fd, -1, hash_algo, hash_value_bin) != -2 ?
61 hash_bin_to_hex(hash_value_bin, hash_algo == HASH_MD5 ? 16 : 20) :
63 RELEASE_CONFIG_BUFFER(hash_value_bin);
69 /* This could become a common function for md5 as well, by using md5_stream */
70 static int hash_files(int argc, char **argv, const uint8_t hash_algo)
72 int return_value = EXIT_SUCCESS;
75 #ifdef CONFIG_FEATURE_MD5_SHA1_SUM_CHECK
78 flags = bb_getopt_ulflags(argc, argv, "scw");
81 #ifdef CONFIG_FEATURE_MD5_SHA1_SUM_CHECK
82 if (!(flags & FLAG_CHECK)) {
83 if (flags & FLAG_SILENT) {
85 ("the -s option is meaningful only when verifying checksums");
86 } else if (flags & FLAG_WARN) {
88 ("the -w option is meaningful only when verifying checksums");
96 #ifdef CONFIG_FEATURE_MD5_SHA1_SUM_CHECK
97 if (flags & FLAG_CHECK) {
98 FILE *pre_computed_stream;
100 int count_failed = 0;
101 char *file_ptr = argv[optind];
104 if (optind + 1 != argc) {
106 ("only one argument may be specified when using -c");
109 if (strcmp(file_ptr, "-") == 0) {
110 pre_computed_stream = stdin;
112 pre_computed_stream = bb_xfopen(file_ptr, "r");
115 while ((line = bb_get_chomped_line_from_file(pre_computed_stream)) != NULL) {
119 filename_ptr = strstr(line, " ");
120 if (filename_ptr == NULL) {
121 if (flags & FLAG_WARN) {
122 bb_error_msg("Invalid format");
127 *filename_ptr = '\0';
130 hash_value = hash_file(filename_ptr, hash_algo);
132 if (hash_value && (strcmp((char*)hash_value, line) == 0)) {
133 if (!(flags & FLAG_SILENT))
134 printf("%s: OK\n", filename_ptr);
136 if (!(flags & FLAG_SILENT))
137 printf("%s: FAILED\n", filename_ptr);
139 return_value = EXIT_FAILURE;
141 /* possible free(NULL) */
145 if (count_failed && !(flags & FLAG_SILENT)) {
146 bb_error_msg("WARNING: %d of %d computed checksums did NOT match",
147 count_failed, count_total);
149 if (bb_fclose_nonstdin(pre_computed_stream) == EOF) {
150 bb_perror_msg_and_die("Couldnt close file %s", file_ptr);
157 if (hash_algo == HASH_MD5) {
162 hash_value = xmalloc(hash_length);
164 while (optind < argc) {
165 char *file_ptr = argv[optind++];
167 hash_value = hash_file(file_ptr, hash_algo);
168 if (hash_value == NULL) {
169 return_value = EXIT_FAILURE;
171 printf("%s %s\n", hash_value, file_ptr);
176 return (return_value);
180 extern int md5sum_main(int argc, char **argv)
182 return(hash_files(argc, argv, HASH_MD5));
186 #ifdef CONFIG_SHA1SUM
187 extern int sha1sum_main(int argc, char **argv)
189 return(hash_files(argc, argv, HASH_SHA1));