Contents of /trunk/mkinitrd-magellan/busybox/coreutils/md5_sha1_sum.c
Parent Directory | Revision Log
Revision 816 -
(show annotations)
(download)
Fri Apr 24 18:33:46 2009 UTC (15 years, 5 months ago) by niro
File MIME type: text/plain
File size: 4321 byte(s)
Fri Apr 24 18:33:46 2009 UTC (15 years, 5 months ago) by niro
File MIME type: text/plain
File size: 4321 byte(s)
-updated to busybox-1.13.4
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * Copyright (C) 2003 Glenn L. McGrath |
4 | * Copyright (C) 2003-2004 Erik Andersen |
5 | * |
6 | * Licensed under the GPL v2 or later, see the file LICENSE in this tarball. |
7 | */ |
8 | |
9 | #include "libbb.h" |
10 | |
11 | typedef enum { HASH_SHA1, HASH_MD5 } hash_algo_t; |
12 | |
13 | #define FLAG_SILENT 1 |
14 | #define FLAG_CHECK 2 |
15 | #define FLAG_WARN 4 |
16 | |
17 | /* This might be useful elsewhere */ |
18 | static unsigned char *hash_bin_to_hex(unsigned char *hash_value, |
19 | unsigned hash_length) |
20 | { |
21 | /* xzalloc zero-terminates */ |
22 | char *hex_value = xzalloc((hash_length * 2) + 1); |
23 | bin2hex(hex_value, (char*)hash_value, hash_length); |
24 | return (unsigned char *)hex_value; |
25 | } |
26 | |
27 | static uint8_t *hash_file(const char *filename, hash_algo_t hash_algo) |
28 | { |
29 | int src_fd, hash_len, count; |
30 | union _ctx_ { |
31 | sha1_ctx_t sha1; |
32 | md5_ctx_t md5; |
33 | } context; |
34 | uint8_t *hash_value = NULL; |
35 | RESERVE_CONFIG_UBUFFER(in_buf, 4096); |
36 | void FAST_FUNC (*update)(const void*, size_t, void*); |
37 | void FAST_FUNC (*final)(void*, void*); |
38 | |
39 | src_fd = open_or_warn_stdin(filename); |
40 | if (src_fd < 0) { |
41 | return NULL; |
42 | } |
43 | |
44 | /* figure specific hash algorithims */ |
45 | if (ENABLE_MD5SUM && hash_algo==HASH_MD5) { |
46 | md5_begin(&context.md5); |
47 | update = (void*)md5_hash; |
48 | final = (void*)md5_end; |
49 | hash_len = 16; |
50 | } else if (ENABLE_SHA1SUM && hash_algo==HASH_SHA1) { |
51 | sha1_begin(&context.sha1); |
52 | update = (void*)sha1_hash; |
53 | final = (void*)sha1_end; |
54 | hash_len = 20; |
55 | } else { |
56 | bb_error_msg_and_die("algorithm not supported"); |
57 | } |
58 | |
59 | while (0 < (count = safe_read(src_fd, in_buf, 4096))) { |
60 | update(in_buf, count, &context); |
61 | } |
62 | |
63 | if (count == 0) { |
64 | final(in_buf, &context); |
65 | hash_value = hash_bin_to_hex(in_buf, hash_len); |
66 | } |
67 | |
68 | RELEASE_CONFIG_BUFFER(in_buf); |
69 | |
70 | if (src_fd != STDIN_FILENO) { |
71 | close(src_fd); |
72 | } |
73 | |
74 | return hash_value; |
75 | } |
76 | |
77 | int md5_sha1_sum_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
78 | int md5_sha1_sum_main(int argc UNUSED_PARAM, char **argv) |
79 | { |
80 | int return_value = EXIT_SUCCESS; |
81 | uint8_t *hash_value; |
82 | unsigned flags; |
83 | hash_algo_t hash_algo = ENABLE_MD5SUM |
84 | ? (ENABLE_SHA1SUM ? (applet_name[0] == 'm' ? HASH_MD5 : HASH_SHA1) : HASH_MD5) |
85 | : HASH_SHA1; |
86 | |
87 | if (ENABLE_FEATURE_MD5_SHA1_SUM_CHECK) |
88 | flags = getopt32(argv, "scw"); |
89 | else optind = 1; |
90 | argv += optind; |
91 | //argc -= optind; |
92 | if (!*argv) |
93 | *--argv = (char*)"-"; |
94 | |
95 | if (ENABLE_FEATURE_MD5_SHA1_SUM_CHECK && !(flags & FLAG_CHECK)) { |
96 | if (flags & FLAG_SILENT) { |
97 | bb_error_msg_and_die |
98 | ("-%c is meaningful only when verifying checksums", 's'); |
99 | } else if (flags & FLAG_WARN) { |
100 | bb_error_msg_and_die |
101 | ("-%c is meaningful only when verifying checksums", 'w'); |
102 | } |
103 | } |
104 | |
105 | if (ENABLE_FEATURE_MD5_SHA1_SUM_CHECK && (flags & FLAG_CHECK)) { |
106 | FILE *pre_computed_stream; |
107 | int count_total = 0; |
108 | int count_failed = 0; |
109 | char *line; |
110 | |
111 | if (argv[1]) { |
112 | bb_error_msg_and_die |
113 | ("only one argument may be specified when using -c"); |
114 | } |
115 | |
116 | pre_computed_stream = xfopen_stdin(argv[0]); |
117 | |
118 | while ((line = xmalloc_fgetline(pre_computed_stream)) != NULL) { |
119 | char *filename_ptr; |
120 | |
121 | count_total++; |
122 | filename_ptr = strstr(line, " "); |
123 | /* handle format for binary checksums */ |
124 | if (filename_ptr == NULL) { |
125 | filename_ptr = strstr(line, " *"); |
126 | } |
127 | if (filename_ptr == NULL) { |
128 | if (flags & FLAG_WARN) { |
129 | bb_error_msg("invalid format"); |
130 | } |
131 | count_failed++; |
132 | return_value = EXIT_FAILURE; |
133 | free(line); |
134 | continue; |
135 | } |
136 | *filename_ptr = '\0'; |
137 | filename_ptr += 2; |
138 | |
139 | hash_value = hash_file(filename_ptr, hash_algo); |
140 | |
141 | if (hash_value && (strcmp((char*)hash_value, line) == 0)) { |
142 | if (!(flags & FLAG_SILENT)) |
143 | printf("%s: OK\n", filename_ptr); |
144 | } else { |
145 | if (!(flags & FLAG_SILENT)) |
146 | printf("%s: FAILED\n", filename_ptr); |
147 | count_failed++; |
148 | return_value = EXIT_FAILURE; |
149 | } |
150 | /* possible free(NULL) */ |
151 | free(hash_value); |
152 | free(line); |
153 | } |
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); |
157 | } |
158 | /* |
159 | if (fclose_if_not_stdin(pre_computed_stream) == EOF) { |
160 | bb_perror_msg_and_die("cannot close file %s", file_ptr); |
161 | } |
162 | */ |
163 | } else { |
164 | do { |
165 | hash_value = hash_file(*argv, hash_algo); |
166 | if (hash_value == NULL) { |
167 | return_value = EXIT_FAILURE; |
168 | } else { |
169 | printf("%s %s\n", hash_value, *argv); |
170 | free(hash_value); |
171 | } |
172 | } while (*++argv); |
173 | } |
174 | return return_value; |
175 | } |