Annotation of /trunk/mkinitrd-magellan/busybox/coreutils/md5_sha1_sum.c
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Revision 984 -
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Sun May 30 11:32:42 2010 UTC (13 years, 11 months ago) by niro
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File size: 4855 byte(s)
Sun May 30 11:32:42 2010 UTC (13 years, 11 months ago) by niro
File MIME type: text/plain
File size: 4855 byte(s)
-updated to busybox-1.16.1 and enabled blkid/uuid support in default config
1 | niro | 532 | /* 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 | niro | 816 | #include "libbb.h" |
10 | niro | 532 | |
11 | niro | 984 | typedef enum { |
12 | /* 4th letter of applet_name is... */ | ||
13 | HASH_MD5 = 's', /* "md5>s<um" */ | ||
14 | HASH_SHA1 = '1', | ||
15 | HASH_SHA256 = '2', | ||
16 | HASH_SHA512 = '5', | ||
17 | } hash_algo_t; | ||
18 | niro | 532 | |
19 | #define FLAG_SILENT 1 | ||
20 | #define FLAG_CHECK 2 | ||
21 | #define FLAG_WARN 4 | ||
22 | |||
23 | /* This might be useful elsewhere */ | ||
24 | static unsigned char *hash_bin_to_hex(unsigned char *hash_value, | ||
25 | unsigned hash_length) | ||
26 | { | ||
27 | /* xzalloc zero-terminates */ | ||
28 | char *hex_value = xzalloc((hash_length * 2) + 1); | ||
29 | bin2hex(hex_value, (char*)hash_value, hash_length); | ||
30 | niro | 816 | return (unsigned char *)hex_value; |
31 | niro | 532 | } |
32 | |||
33 | niro | 984 | static uint8_t *hash_file(const char *filename /*, hash_algo_t hash_algo*/) |
34 | niro | 532 | { |
35 | int src_fd, hash_len, count; | ||
36 | union _ctx_ { | ||
37 | niro | 984 | sha512_ctx_t sha512; |
38 | sha256_ctx_t sha256; | ||
39 | niro | 532 | sha1_ctx_t sha1; |
40 | md5_ctx_t md5; | ||
41 | } context; | ||
42 | uint8_t *hash_value = NULL; | ||
43 | RESERVE_CONFIG_UBUFFER(in_buf, 4096); | ||
44 | niro | 816 | void FAST_FUNC (*update)(const void*, size_t, void*); |
45 | void FAST_FUNC (*final)(void*, void*); | ||
46 | niro | 984 | hash_algo_t hash_algo = applet_name[3]; |
47 | niro | 532 | |
48 | niro | 816 | src_fd = open_or_warn_stdin(filename); |
49 | if (src_fd < 0) { | ||
50 | return NULL; | ||
51 | niro | 532 | } |
52 | |||
53 | /* figure specific hash algorithims */ | ||
54 | niro | 984 | if (ENABLE_MD5SUM && hash_algo == HASH_MD5) { |
55 | niro | 532 | md5_begin(&context.md5); |
56 | niro | 816 | update = (void*)md5_hash; |
57 | final = (void*)md5_end; | ||
58 | niro | 532 | hash_len = 16; |
59 | niro | 984 | } else if (ENABLE_SHA1SUM && hash_algo == HASH_SHA1) { |
60 | niro | 532 | sha1_begin(&context.sha1); |
61 | niro | 816 | update = (void*)sha1_hash; |
62 | final = (void*)sha1_end; | ||
63 | niro | 532 | hash_len = 20; |
64 | niro | 984 | } else if (ENABLE_SHA256SUM && hash_algo == HASH_SHA256) { |
65 | sha256_begin(&context.sha256); | ||
66 | update = (void*)sha256_hash; | ||
67 | final = (void*)sha256_end; | ||
68 | hash_len = 32; | ||
69 | } else if (ENABLE_SHA512SUM && hash_algo == HASH_SHA512) { | ||
70 | sha512_begin(&context.sha512); | ||
71 | update = (void*)sha512_hash; | ||
72 | final = (void*)sha512_end; | ||
73 | hash_len = 64; | ||
74 | niro | 532 | } else { |
75 | bb_error_msg_and_die("algorithm not supported"); | ||
76 | } | ||
77 | |||
78 | while (0 < (count = safe_read(src_fd, in_buf, 4096))) { | ||
79 | update(in_buf, count, &context); | ||
80 | } | ||
81 | |||
82 | if (count == 0) { | ||
83 | final(in_buf, &context); | ||
84 | hash_value = hash_bin_to_hex(in_buf, hash_len); | ||
85 | } | ||
86 | |||
87 | RELEASE_CONFIG_BUFFER(in_buf); | ||
88 | |||
89 | if (src_fd != STDIN_FILENO) { | ||
90 | close(src_fd); | ||
91 | } | ||
92 | |||
93 | return hash_value; | ||
94 | } | ||
95 | |||
96 | niro | 816 | int md5_sha1_sum_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
97 | int md5_sha1_sum_main(int argc UNUSED_PARAM, char **argv) | ||
98 | niro | 532 | { |
99 | int return_value = EXIT_SUCCESS; | ||
100 | uint8_t *hash_value; | ||
101 | unsigned flags; | ||
102 | niro | 984 | /*hash_algo_t hash_algo = applet_name[3];*/ |
103 | niro | 532 | |
104 | niro | 984 | if (ENABLE_FEATURE_MD5_SHA1_SUM_CHECK) { |
105 | /* -b "binary", -t "text" are ignored (shaNNNsum compat) */ | ||
106 | flags = getopt32(argv, "scwbt"); | ||
107 | } | ||
108 | niro | 532 | else optind = 1; |
109 | niro | 816 | argv += optind; |
110 | //argc -= optind; | ||
111 | if (!*argv) | ||
112 | *--argv = (char*)"-"; | ||
113 | niro | 532 | |
114 | if (ENABLE_FEATURE_MD5_SHA1_SUM_CHECK && !(flags & FLAG_CHECK)) { | ||
115 | if (flags & FLAG_SILENT) { | ||
116 | bb_error_msg_and_die | ||
117 | ("-%c is meaningful only when verifying checksums", 's'); | ||
118 | } else if (flags & FLAG_WARN) { | ||
119 | bb_error_msg_and_die | ||
120 | ("-%c is meaningful only when verifying checksums", 'w'); | ||
121 | } | ||
122 | } | ||
123 | |||
124 | if (ENABLE_FEATURE_MD5_SHA1_SUM_CHECK && (flags & FLAG_CHECK)) { | ||
125 | FILE *pre_computed_stream; | ||
126 | int count_total = 0; | ||
127 | int count_failed = 0; | ||
128 | char *line; | ||
129 | |||
130 | niro | 816 | if (argv[1]) { |
131 | niro | 532 | bb_error_msg_and_die |
132 | ("only one argument may be specified when using -c"); | ||
133 | } | ||
134 | |||
135 | niro | 816 | pre_computed_stream = xfopen_stdin(argv[0]); |
136 | niro | 532 | |
137 | niro | 816 | while ((line = xmalloc_fgetline(pre_computed_stream)) != NULL) { |
138 | niro | 532 | char *filename_ptr; |
139 | |||
140 | count_total++; | ||
141 | filename_ptr = strstr(line, " "); | ||
142 | /* handle format for binary checksums */ | ||
143 | if (filename_ptr == NULL) { | ||
144 | filename_ptr = strstr(line, " *"); | ||
145 | } | ||
146 | if (filename_ptr == NULL) { | ||
147 | if (flags & FLAG_WARN) { | ||
148 | bb_error_msg("invalid format"); | ||
149 | } | ||
150 | count_failed++; | ||
151 | return_value = EXIT_FAILURE; | ||
152 | free(line); | ||
153 | continue; | ||
154 | } | ||
155 | *filename_ptr = '\0'; | ||
156 | filename_ptr += 2; | ||
157 | |||
158 | niro | 984 | hash_value = hash_file(filename_ptr /*, hash_algo*/); |
159 | niro | 532 | |
160 | if (hash_value && (strcmp((char*)hash_value, line) == 0)) { | ||
161 | if (!(flags & FLAG_SILENT)) | ||
162 | printf("%s: OK\n", filename_ptr); | ||
163 | } else { | ||
164 | if (!(flags & FLAG_SILENT)) | ||
165 | printf("%s: FAILED\n", filename_ptr); | ||
166 | count_failed++; | ||
167 | return_value = EXIT_FAILURE; | ||
168 | } | ||
169 | /* possible free(NULL) */ | ||
170 | free(hash_value); | ||
171 | free(line); | ||
172 | } | ||
173 | if (count_failed && !(flags & FLAG_SILENT)) { | ||
174 | bb_error_msg("WARNING: %d of %d computed checksums did NOT match", | ||
175 | count_failed, count_total); | ||
176 | } | ||
177 | /* | ||
178 | if (fclose_if_not_stdin(pre_computed_stream) == EOF) { | ||
179 | niro | 984 | bb_perror_msg_and_die("can't close file %s", file_ptr); |
180 | niro | 532 | } |
181 | */ | ||
182 | } else { | ||
183 | niro | 816 | do { |
184 | niro | 984 | hash_value = hash_file(*argv/*, hash_algo*/); |
185 | niro | 532 | if (hash_value == NULL) { |
186 | return_value = EXIT_FAILURE; | ||
187 | } else { | ||
188 | niro | 816 | printf("%s %s\n", hash_value, *argv); |
189 | niro | 532 | free(hash_value); |
190 | } | ||
191 | niro | 816 | } while (*++argv); |
192 | niro | 532 | } |
193 | return return_value; | ||
194 | } |