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.
12 /* 4th letter of applet_name is... */
13 HASH_MD5 = 's', /* "md5>s<um" */
23 /* This might be useful elsewhere */
24 static unsigned char *hash_bin_to_hex(unsigned char *hash_value,
27 /* xzalloc zero-terminates */
28 char *hex_value = xzalloc((hash_length * 2) + 1);
29 bin2hex(hex_value, (char*)hash_value, hash_length);
30 return (unsigned char *)hex_value;
33 static uint8_t *hash_file(const char *filename /*, hash_algo_t hash_algo*/)
35 int src_fd, hash_len, count;
42 uint8_t *hash_value = NULL;
43 RESERVE_CONFIG_UBUFFER(in_buf, 4096);
44 void FAST_FUNC (*update)(const void*, size_t, void*);
45 void FAST_FUNC (*final)(void*, void*);
46 hash_algo_t hash_algo = applet_name[3];
48 src_fd = open_or_warn_stdin(filename);
53 /* figure specific hash algorithims */
54 if (ENABLE_MD5SUM && hash_algo == HASH_MD5) {
55 md5_begin(&context.md5);
56 update = (void*)md5_hash;
57 final = (void*)md5_end;
59 } else if (ENABLE_SHA1SUM && hash_algo == HASH_SHA1) {
60 sha1_begin(&context.sha1);
61 update = (void*)sha1_hash;
62 final = (void*)sha1_end;
64 } else if (ENABLE_SHA256SUM && hash_algo == HASH_SHA256) {
65 sha256_begin(&context.sha256);
66 update = (void*)sha256_hash;
67 final = (void*)sha256_end;
69 } else if (ENABLE_SHA512SUM && hash_algo == HASH_SHA512) {
70 sha512_begin(&context.sha512);
71 update = (void*)sha512_hash;
72 final = (void*)sha512_end;
75 bb_error_msg_and_die("algorithm not supported");
78 while (0 < (count = safe_read(src_fd, in_buf, 4096))) {
79 update(in_buf, count, &context);
83 final(in_buf, &context);
84 hash_value = hash_bin_to_hex(in_buf, hash_len);
87 RELEASE_CONFIG_BUFFER(in_buf);
89 if (src_fd != STDIN_FILENO) {
96 int md5_sha1_sum_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
97 int md5_sha1_sum_main(int argc UNUSED_PARAM, char **argv)
99 int return_value = EXIT_SUCCESS;
102 /*hash_algo_t hash_algo = applet_name[3];*/
104 if (ENABLE_FEATURE_MD5_SHA1_SUM_CHECK)
105 flags = getopt32(argv, "scw");
110 *--argv = (char*)"-";
112 if (ENABLE_FEATURE_MD5_SHA1_SUM_CHECK && !(flags & FLAG_CHECK)) {
113 if (flags & FLAG_SILENT) {
115 ("-%c is meaningful only when verifying checksums", 's');
116 } else if (flags & FLAG_WARN) {
118 ("-%c is meaningful only when verifying checksums", 'w');
122 if (ENABLE_FEATURE_MD5_SHA1_SUM_CHECK && (flags & FLAG_CHECK)) {
123 FILE *pre_computed_stream;
125 int count_failed = 0;
130 ("only one argument may be specified when using -c");
133 pre_computed_stream = xfopen_stdin(argv[0]);
135 while ((line = xmalloc_fgetline(pre_computed_stream)) != NULL) {
139 filename_ptr = strstr(line, " ");
140 /* handle format for binary checksums */
141 if (filename_ptr == NULL) {
142 filename_ptr = strstr(line, " *");
144 if (filename_ptr == NULL) {
145 if (flags & FLAG_WARN) {
146 bb_error_msg("invalid format");
149 return_value = EXIT_FAILURE;
153 *filename_ptr = '\0';
156 hash_value = hash_file(filename_ptr /*, hash_algo*/);
158 if (hash_value && (strcmp((char*)hash_value, line) == 0)) {
159 if (!(flags & FLAG_SILENT))
160 printf("%s: OK\n", filename_ptr);
162 if (!(flags & FLAG_SILENT))
163 printf("%s: FAILED\n", filename_ptr);
165 return_value = EXIT_FAILURE;
167 /* possible free(NULL) */
171 if (count_failed && !(flags & FLAG_SILENT)) {
172 bb_error_msg("WARNING: %d of %d computed checksums did NOT match",
173 count_failed, count_total);
176 if (fclose_if_not_stdin(pre_computed_stream) == EOF) {
177 bb_perror_msg_and_die("cannot close file %s", file_ptr);
182 hash_value = hash_file(*argv/*, hash_algo*/);
183 if (hash_value == NULL) {
184 return_value = EXIT_FAILURE;
186 printf("%s %s\n", hash_value, *argv);