blob: 1a5342e879a736539e43c0d328a24fca02117f00
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 GPLv2 or later, see file LICENSE in this source tree. |
7 | */ |
8 | |
9 | //usage:#define md5sum_trivial_usage |
10 | //usage: IF_FEATURE_MD5_SHA1_SUM_CHECK("[-c[sw]] ")"[FILE]..." |
11 | //usage:#define md5sum_full_usage "\n\n" |
12 | //usage: "Print" IF_FEATURE_MD5_SHA1_SUM_CHECK(" or check") " MD5 checksums" |
13 | //usage: IF_FEATURE_MD5_SHA1_SUM_CHECK( "\n" |
14 | //usage: "\n -c Check sums against list in FILEs" |
15 | //usage: "\n -s Don't output anything, status code shows success" |
16 | //usage: "\n -w Warn about improperly formatted checksum lines" |
17 | //usage: ) |
18 | //usage: |
19 | //usage:#define md5sum_example_usage |
20 | //usage: "$ md5sum < busybox\n" |
21 | //usage: "6fd11e98b98a58f64ff3398d7b324003\n" |
22 | //usage: "$ md5sum busybox\n" |
23 | //usage: "6fd11e98b98a58f64ff3398d7b324003 busybox\n" |
24 | //usage: "$ md5sum -c -\n" |
25 | //usage: "6fd11e98b98a58f64ff3398d7b324003 busybox\n" |
26 | //usage: "busybox: OK\n" |
27 | //usage: "^D\n" |
28 | //usage: |
29 | //usage:#define sha1sum_trivial_usage |
30 | //usage: IF_FEATURE_MD5_SHA1_SUM_CHECK("[-c[sw]] ")"[FILE]..." |
31 | //usage:#define sha1sum_full_usage "\n\n" |
32 | //usage: "Print" IF_FEATURE_MD5_SHA1_SUM_CHECK(" or check") " SHA1 checksums" |
33 | //usage: IF_FEATURE_MD5_SHA1_SUM_CHECK( "\n" |
34 | //usage: "\n -c Check sums against list in FILEs" |
35 | //usage: "\n -s Don't output anything, status code shows success" |
36 | //usage: "\n -w Warn about improperly formatted checksum lines" |
37 | //usage: ) |
38 | //usage: |
39 | //usage:#define sha256sum_trivial_usage |
40 | //usage: IF_FEATURE_MD5_SHA1_SUM_CHECK("[-c[sw]] ")"[FILE]..." |
41 | //usage:#define sha256sum_full_usage "\n\n" |
42 | //usage: "Print" IF_FEATURE_MD5_SHA1_SUM_CHECK(" or check") " SHA256 checksums" |
43 | //usage: IF_FEATURE_MD5_SHA1_SUM_CHECK( "\n" |
44 | //usage: "\n -c Check sums against list in FILEs" |
45 | //usage: "\n -s Don't output anything, status code shows success" |
46 | //usage: "\n -w Warn about improperly formatted checksum lines" |
47 | //usage: ) |
48 | //usage: |
49 | //usage:#define sha512sum_trivial_usage |
50 | //usage: IF_FEATURE_MD5_SHA1_SUM_CHECK("[-c[sw]] ")"[FILE]..." |
51 | //usage:#define sha512sum_full_usage "\n\n" |
52 | //usage: "Print" IF_FEATURE_MD5_SHA1_SUM_CHECK(" or check") " SHA512 checksums" |
53 | //usage: IF_FEATURE_MD5_SHA1_SUM_CHECK( "\n" |
54 | //usage: "\n -c Check sums against list in FILEs" |
55 | //usage: "\n -s Don't output anything, status code shows success" |
56 | //usage: "\n -w Warn about improperly formatted checksum lines" |
57 | //usage: ) |
58 | //usage: |
59 | //usage:#define sha3sum_trivial_usage |
60 | //usage: IF_FEATURE_MD5_SHA1_SUM_CHECK("[-c[sw]] ")"[FILE]..." |
61 | //usage:#define sha3sum_full_usage "\n\n" |
62 | //usage: "Print" IF_FEATURE_MD5_SHA1_SUM_CHECK(" or check") " SHA3-512 checksums" |
63 | //usage: IF_FEATURE_MD5_SHA1_SUM_CHECK( "\n" |
64 | //usage: "\n -c Check sums against list in FILEs" |
65 | //usage: "\n -s Don't output anything, status code shows success" |
66 | //usage: "\n -w Warn about improperly formatted checksum lines" |
67 | //usage: ) |
68 | |
69 | #include "libbb.h" |
70 | |
71 | /* This is a NOEXEC applet. Be very careful! */ |
72 | |
73 | enum { |
74 | /* 4th letter of applet_name is... */ |
75 | HASH_MD5 = 's', /* "md5>s<um" */ |
76 | HASH_SHA1 = '1', |
77 | HASH_SHA256 = '2', |
78 | HASH_SHA3 = '3', |
79 | HASH_SHA512 = '5', |
80 | }; |
81 | |
82 | #define FLAG_SILENT 1 |
83 | #define FLAG_CHECK 2 |
84 | #define FLAG_WARN 4 |
85 | |
86 | /* This might be useful elsewhere */ |
87 | static unsigned char *hash_bin_to_hex(unsigned char *hash_value, |
88 | unsigned hash_length) |
89 | { |
90 | /* xzalloc zero-terminates */ |
91 | char *hex_value = xzalloc((hash_length * 2) + 1); |
92 | bin2hex(hex_value, (char*)hash_value, hash_length); |
93 | return (unsigned char *)hex_value; |
94 | } |
95 | |
96 | static uint8_t *hash_file(const char *filename) |
97 | { |
98 | int src_fd, hash_len, count; |
99 | union _ctx_ { |
100 | sha3_ctx_t sha3; |
101 | sha512_ctx_t sha512; |
102 | sha256_ctx_t sha256; |
103 | sha1_ctx_t sha1; |
104 | md5_ctx_t md5; |
105 | } context; |
106 | uint8_t *hash_value; |
107 | void FAST_FUNC (*update)(void*, const void*, size_t); |
108 | void FAST_FUNC (*final)(void*, void*); |
109 | char hash_algo; |
110 | |
111 | src_fd = open_or_warn_stdin(filename); |
112 | if (src_fd < 0) { |
113 | return NULL; |
114 | } |
115 | |
116 | hash_algo = applet_name[3]; |
117 | |
118 | /* figure specific hash algorithms */ |
119 | if (ENABLE_MD5SUM && hash_algo == HASH_MD5) { |
120 | md5_begin(&context.md5); |
121 | update = (void*)md5_hash; |
122 | final = (void*)md5_end; |
123 | hash_len = 16; |
124 | } else if (ENABLE_SHA1SUM && hash_algo == HASH_SHA1) { |
125 | sha1_begin(&context.sha1); |
126 | update = (void*)sha1_hash; |
127 | final = (void*)sha1_end; |
128 | hash_len = 20; |
129 | } else if (ENABLE_SHA256SUM && hash_algo == HASH_SHA256) { |
130 | sha256_begin(&context.sha256); |
131 | update = (void*)sha256_hash; |
132 | final = (void*)sha256_end; |
133 | hash_len = 32; |
134 | } else if (ENABLE_SHA512SUM && hash_algo == HASH_SHA512) { |
135 | sha512_begin(&context.sha512); |
136 | update = (void*)sha512_hash; |
137 | final = (void*)sha512_end; |
138 | hash_len = 64; |
139 | } else if (ENABLE_SHA3SUM && hash_algo == HASH_SHA3) { |
140 | sha3_begin(&context.sha3); |
141 | update = (void*)sha3_hash; |
142 | final = (void*)sha3_end; |
143 | hash_len = 64; |
144 | } else { |
145 | xfunc_die(); /* can't reach this */ |
146 | } |
147 | |
148 | { |
149 | RESERVE_CONFIG_UBUFFER(in_buf, 4096); |
150 | while ((count = safe_read(src_fd, in_buf, 4096)) > 0) { |
151 | update(&context, in_buf, count); |
152 | } |
153 | hash_value = NULL; |
154 | if (count < 0) |
155 | bb_perror_msg("can't read '%s'", filename); |
156 | else /* count == 0 */ { |
157 | final(&context, in_buf); |
158 | hash_value = hash_bin_to_hex(in_buf, hash_len); |
159 | } |
160 | RELEASE_CONFIG_BUFFER(in_buf); |
161 | } |
162 | |
163 | if (src_fd != STDIN_FILENO) { |
164 | close(src_fd); |
165 | } |
166 | |
167 | return hash_value; |
168 | } |
169 | |
170 | int md5_sha1_sum_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
171 | int md5_sha1_sum_main(int argc UNUSED_PARAM, char **argv) |
172 | { |
173 | int return_value = EXIT_SUCCESS; |
174 | unsigned flags; |
175 | |
176 | if (ENABLE_FEATURE_MD5_SHA1_SUM_CHECK) { |
177 | /* -b "binary", -t "text" are ignored (shaNNNsum compat) */ |
178 | flags = getopt32(argv, "scwbt"); |
179 | argv += optind; |
180 | //argc -= optind; |
181 | } else { |
182 | argv += 1; |
183 | //argc -= 1; |
184 | } |
185 | if (!*argv) |
186 | *--argv = (char*)"-"; |
187 | |
188 | if (ENABLE_FEATURE_MD5_SHA1_SUM_CHECK && !(flags & FLAG_CHECK)) { |
189 | if (flags & FLAG_SILENT) { |
190 | bb_error_msg_and_die("-%c is meaningful only with -c", 's'); |
191 | } |
192 | if (flags & FLAG_WARN) { |
193 | bb_error_msg_and_die("-%c is meaningful only with -c", 'w'); |
194 | } |
195 | } |
196 | |
197 | do { |
198 | if (ENABLE_FEATURE_MD5_SHA1_SUM_CHECK && (flags & FLAG_CHECK)) { |
199 | FILE *pre_computed_stream; |
200 | char *line; |
201 | int count_total = 0; |
202 | int count_failed = 0; |
203 | |
204 | pre_computed_stream = xfopen_stdin(*argv); |
205 | |
206 | while ((line = xmalloc_fgetline(pre_computed_stream)) != NULL) { |
207 | uint8_t *hash_value; |
208 | char *filename_ptr; |
209 | |
210 | count_total++; |
211 | filename_ptr = strstr(line, " "); |
212 | /* handle format for binary checksums */ |
213 | if (filename_ptr == NULL) { |
214 | filename_ptr = strstr(line, " *"); |
215 | } |
216 | if (filename_ptr == NULL) { |
217 | if (flags & FLAG_WARN) { |
218 | bb_error_msg("invalid format"); |
219 | } |
220 | count_failed++; |
221 | return_value = EXIT_FAILURE; |
222 | free(line); |
223 | continue; |
224 | } |
225 | *filename_ptr = '\0'; |
226 | filename_ptr += 2; |
227 | |
228 | hash_value = hash_file(filename_ptr); |
229 | |
230 | if (hash_value && (strcmp((char*)hash_value, line) == 0)) { |
231 | if (!(flags & FLAG_SILENT)) |
232 | printf("%s: OK\n", filename_ptr); |
233 | } else { |
234 | if (!(flags & FLAG_SILENT)) |
235 | printf("%s: FAILED\n", filename_ptr); |
236 | count_failed++; |
237 | return_value = EXIT_FAILURE; |
238 | } |
239 | /* possible free(NULL) */ |
240 | free(hash_value); |
241 | free(line); |
242 | } |
243 | if (count_failed && !(flags & FLAG_SILENT)) { |
244 | bb_error_msg("WARNING: %d of %d computed checksums did NOT match", |
245 | count_failed, count_total); |
246 | } |
247 | fclose_if_not_stdin(pre_computed_stream); |
248 | } else { |
249 | uint8_t *hash_value = hash_file(*argv); |
250 | if (hash_value == NULL) { |
251 | return_value = EXIT_FAILURE; |
252 | } else { |
253 | printf("%s %s\n", hash_value, *argv); |
254 | free(hash_value); |
255 | } |
256 | } |
257 | } while (*++argv); |
258 | |
259 | return return_value; |
260 | } |
261 |