1 /* vi: set sw=4 ts=4: */
3 * Copyright (C) 2003 Glenn L. McGrath
4 * Copyright (C) 2003-2004 Erik Andersen
6 * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
11 typedef enum { HASH_SHA1, HASH_MD5 } hash_algo_t;
17 /* This might be useful elsewhere */
18 static unsigned char *hash_bin_to_hex(unsigned char *hash_value,
21 /* xzalloc zero-terminates */
22 char *hex_value = xzalloc((hash_length * 2) + 1);
23 bin2hex(hex_value, (char*)hash_value, hash_length);
27 static uint8_t *hash_file(const char *filename, hash_algo_t hash_algo)
29 int src_fd, hash_len, count;
34 uint8_t *hash_value = NULL;
35 RESERVE_CONFIG_UBUFFER(in_buf, 4096);
36 void (*update)(const void*, size_t, void*);
37 void (*final)(void*, void*);
39 src_fd = open_or_warn_stdin(filename);
44 /* figure specific hash algorithims */
45 if (ENABLE_MD5SUM && hash_algo==HASH_MD5) {
46 md5_begin(&context.md5);
47 update = (void (*)(const void*, size_t, void*))md5_hash;
48 final = (void (*)(void*, void*))md5_end;
50 } else if (ENABLE_SHA1SUM && hash_algo==HASH_SHA1) {
51 sha1_begin(&context.sha1);
52 update = (void (*)(const void*, size_t, void*))sha1_hash;
53 final = (void (*)(void*, void*))sha1_end;
56 bb_error_msg_and_die("algorithm not supported");
59 while (0 < (count = safe_read(src_fd, in_buf, 4096))) {
60 update(in_buf, count, &context);
64 final(in_buf, &context);
65 hash_value = hash_bin_to_hex(in_buf, hash_len);
68 RELEASE_CONFIG_BUFFER(in_buf);
70 if (src_fd != STDIN_FILENO) {
77 int md5_sha1_sum_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
78 int md5_sha1_sum_main(int argc ATTRIBUTE_UNUSED, char **argv)
80 int return_value = EXIT_SUCCESS;
83 hash_algo_t hash_algo = ENABLE_MD5SUM
84 ? (ENABLE_SHA1SUM ? (applet_name[0] == 'm' ? HASH_MD5 : HASH_SHA1) : HASH_MD5)
87 if (ENABLE_FEATURE_MD5_SHA1_SUM_CHECK)
88 flags = getopt32(argv, "scw");
95 if (ENABLE_FEATURE_MD5_SHA1_SUM_CHECK && !(flags & FLAG_CHECK)) {
96 if (flags & FLAG_SILENT) {
98 ("-%c is meaningful only when verifying checksums", 's');
99 } else if (flags & FLAG_WARN) {
101 ("-%c is meaningful only when verifying checksums", 'w');
105 if (ENABLE_FEATURE_MD5_SHA1_SUM_CHECK && (flags & FLAG_CHECK)) {
106 FILE *pre_computed_stream;
108 int count_failed = 0;
113 ("only one argument may be specified when using -c");
116 pre_computed_stream = xfopen_stdin(argv[0]);
118 while ((line = xmalloc_getline(pre_computed_stream)) != NULL) {
122 filename_ptr = strstr(line, " ");
123 /* handle format for binary checksums */
124 if (filename_ptr == NULL) {
125 filename_ptr = strstr(line, " *");
127 if (filename_ptr == NULL) {
128 if (flags & FLAG_WARN) {
129 bb_error_msg("invalid format");
132 return_value = EXIT_FAILURE;
136 *filename_ptr = '\0';
139 hash_value = hash_file(filename_ptr, hash_algo);
141 if (hash_value && (strcmp((char*)hash_value, line) == 0)) {
142 if (!(flags & FLAG_SILENT))
143 printf("%s: OK\n", filename_ptr);
145 if (!(flags & FLAG_SILENT))
146 printf("%s: FAILED\n", filename_ptr);
148 return_value = EXIT_FAILURE;
150 /* possible free(NULL) */
154 if (count_failed && !(flags & FLAG_SILENT)) {
155 bb_error_msg("WARNING: %d of %d computed checksums did NOT match",
156 count_failed, count_total);
159 if (fclose_if_not_stdin(pre_computed_stream) == EOF) {
160 bb_perror_msg_and_die("cannot close file %s", file_ptr);
165 hash_value = hash_file(*argv, hash_algo);
166 if (hash_value == NULL) {
167 return_value = EXIT_FAILURE;
169 printf("%s %s\n", hash_value, *argv);