1 /* vi: set sw=4 ts=4: */
3 * Copyright (C) 2003 Glenn L. McGrath
4 * Copyright (C) 2003-2004 Erik Andersen
6 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
9 //config: bool "md5sum"
12 //config: md5sum is used to print or check MD5 checksums.
14 //config:config SHA1SUM
15 //config: bool "sha1sum"
18 //config: Compute and check SHA1 message digest
20 //config:config SHA256SUM
21 //config: bool "sha256sum"
24 //config: Compute and check SHA256 message digest
26 //config:config SHA512SUM
27 //config: bool "sha512sum"
30 //config: Compute and check SHA512 message digest
32 //config:config SHA3SUM
33 //config: bool "sha3sum"
36 //config: Compute and check SHA3 message digest
38 //config:comment "Common options for md5sum, sha1sum, sha256sum, sha512sum, sha3sum"
39 //config: depends on MD5SUM || SHA1SUM || SHA256SUM || SHA512SUM || SHA3SUM
41 //config:config FEATURE_MD5_SHA1_SUM_CHECK
42 //config: bool "Enable -c, -s and -w options"
44 //config: depends on MD5SUM || SHA1SUM || SHA256SUM || SHA512SUM || SHA3SUM
46 //config: Enabling the -c options allows files to be checked
47 //config: against pre-calculated hash values.
48 //config: -s and -w are useful options when verifying checksums.
50 //applet:IF_MD5SUM(APPLET_NOEXEC(md5sum, md5_sha1_sum, BB_DIR_USR_BIN, BB_SUID_DROP, md5sum))
51 //applet:IF_SHA1SUM(APPLET_NOEXEC(sha1sum, md5_sha1_sum, BB_DIR_USR_BIN, BB_SUID_DROP, sha1sum))
52 //applet:IF_SHA3SUM(APPLET_NOEXEC(sha3sum, md5_sha1_sum, BB_DIR_USR_BIN, BB_SUID_DROP, sha3sum))
53 //applet:IF_SHA256SUM(APPLET_NOEXEC(sha256sum, md5_sha1_sum, BB_DIR_USR_BIN, BB_SUID_DROP, sha256sum))
54 //applet:IF_SHA512SUM(APPLET_NOEXEC(sha512sum, md5_sha1_sum, BB_DIR_USR_BIN, BB_SUID_DROP, sha512sum))
56 //kbuild:lib-$(CONFIG_MD5SUM) += md5_sha1_sum.o
57 //kbuild:lib-$(CONFIG_SHA1SUM) += md5_sha1_sum.o
58 //kbuild:lib-$(CONFIG_SHA256SUM) += md5_sha1_sum.o
59 //kbuild:lib-$(CONFIG_SHA512SUM) += md5_sha1_sum.o
60 //kbuild:lib-$(CONFIG_SHA3SUM) += md5_sha1_sum.o
62 //usage:#define md5sum_trivial_usage
63 //usage: IF_FEATURE_MD5_SHA1_SUM_CHECK("[-c[sw]] ")"[FILE]..."
64 //usage:#define md5sum_full_usage "\n\n"
65 //usage: "Print" IF_FEATURE_MD5_SHA1_SUM_CHECK(" or check") " MD5 checksums"
66 //usage: IF_FEATURE_MD5_SHA1_SUM_CHECK( "\n"
67 //usage: "\n -c Check sums against list in FILEs"
68 //usage: "\n -s Don't output anything, status code shows success"
69 //usage: "\n -w Warn about improperly formatted checksum lines"
72 //usage:#define md5sum_example_usage
73 //usage: "$ md5sum < busybox\n"
74 //usage: "6fd11e98b98a58f64ff3398d7b324003\n"
75 //usage: "$ md5sum busybox\n"
76 //usage: "6fd11e98b98a58f64ff3398d7b324003 busybox\n"
77 //usage: "$ md5sum -c -\n"
78 //usage: "6fd11e98b98a58f64ff3398d7b324003 busybox\n"
79 //usage: "busybox: OK\n"
82 //usage:#define sha1sum_trivial_usage
83 //usage: IF_FEATURE_MD5_SHA1_SUM_CHECK("[-c[sw]] ")"[FILE]..."
84 //usage:#define sha1sum_full_usage "\n\n"
85 //usage: "Print" IF_FEATURE_MD5_SHA1_SUM_CHECK(" or check") " SHA1 checksums"
86 //usage: IF_FEATURE_MD5_SHA1_SUM_CHECK( "\n"
87 //usage: "\n -c Check sums against list in FILEs"
88 //usage: "\n -s Don't output anything, status code shows success"
89 //usage: "\n -w Warn about improperly formatted checksum lines"
92 //usage:#define sha256sum_trivial_usage
93 //usage: IF_FEATURE_MD5_SHA1_SUM_CHECK("[-c[sw]] ")"[FILE]..."
94 //usage:#define sha256sum_full_usage "\n\n"
95 //usage: "Print" IF_FEATURE_MD5_SHA1_SUM_CHECK(" or check") " SHA256 checksums"
96 //usage: IF_FEATURE_MD5_SHA1_SUM_CHECK( "\n"
97 //usage: "\n -c Check sums against list in FILEs"
98 //usage: "\n -s Don't output anything, status code shows success"
99 //usage: "\n -w Warn about improperly formatted checksum lines"
102 //usage:#define sha512sum_trivial_usage
103 //usage: IF_FEATURE_MD5_SHA1_SUM_CHECK("[-c[sw]] ")"[FILE]..."
104 //usage:#define sha512sum_full_usage "\n\n"
105 //usage: "Print" IF_FEATURE_MD5_SHA1_SUM_CHECK(" or check") " SHA512 checksums"
106 //usage: IF_FEATURE_MD5_SHA1_SUM_CHECK( "\n"
107 //usage: "\n -c Check sums against list in FILEs"
108 //usage: "\n -s Don't output anything, status code shows success"
109 //usage: "\n -w Warn about improperly formatted checksum lines"
112 //usage:#define sha3sum_trivial_usage
113 //usage: IF_FEATURE_MD5_SHA1_SUM_CHECK("[-c[sw]] ")"[-a BITS] [FILE]..."
114 //usage:#define sha3sum_full_usage "\n\n"
115 //usage: "Print" IF_FEATURE_MD5_SHA1_SUM_CHECK(" or check") " SHA3 checksums"
116 //usage: IF_FEATURE_MD5_SHA1_SUM_CHECK( "\n"
117 //usage: "\n -c Check sums against list in FILEs"
118 //usage: "\n -s Don't output anything, status code shows success"
119 //usage: "\n -w Warn about improperly formatted checksum lines"
120 //usage: "\n -a BITS 224 (default), 256, 384, 512"
123 //FIXME: GNU coreutils 8.25 has no -s option, it has only these two long opts:
124 // --quiet don't print OK for each successfully verified file
125 // --status don't output anything, status code shows success
129 /* This is a NOEXEC applet. Be very careful! */
132 /* 4th letter of applet_name is... */
133 HASH_MD5 = 's', /* "md5>s<um" */
140 #define FLAG_SILENT 1
144 /* This might be useful elsewhere */
145 static unsigned char *hash_bin_to_hex(unsigned char *hash_value,
146 unsigned hash_length)
148 /* xzalloc zero-terminates */
149 char *hex_value = xzalloc((hash_length * 2) + 1);
150 bin2hex(hex_value, (char*)hash_value, hash_length);
151 return (unsigned char *)hex_value;
155 # define hash_file(f,w) hash_file(f)
157 static uint8_t *hash_file(const char *filename, unsigned sha3_width)
159 int src_fd, hash_len, count;
168 void FAST_FUNC (*update)(void*, const void*, size_t);
169 unsigned FAST_FUNC (*final)(void*, void*);
172 src_fd = open_or_warn_stdin(filename);
177 hash_algo = applet_name[3];
179 /* figure specific hash algorithms */
180 if (ENABLE_MD5SUM && hash_algo == HASH_MD5) {
181 md5_begin(&context.md5);
182 update = (void*)md5_hash;
183 final = (void*)md5_end;
186 else if (ENABLE_SHA1SUM && hash_algo == HASH_SHA1) {
187 sha1_begin(&context.sha1);
188 update = (void*)sha1_hash;
189 final = (void*)sha1_end;
192 else if (ENABLE_SHA256SUM && hash_algo == HASH_SHA256) {
193 sha256_begin(&context.sha256);
194 update = (void*)sha256_hash;
195 final = (void*)sha256_end;
198 else if (ENABLE_SHA512SUM && hash_algo == HASH_SHA512) {
199 sha512_begin(&context.sha512);
200 update = (void*)sha512_hash;
201 final = (void*)sha512_end;
205 else if (ENABLE_SHA3SUM && hash_algo == HASH_SHA3) {
206 sha3_begin(&context.sha3);
207 update = (void*)sha3_hash;
208 final = (void*)sha3_end;
210 * Should support 224, 256, 384, 512.
211 * We allow any value which does not blow the algorithm up.
213 if (sha3_width >= 1600/2 /* input block can't be <= 0 */
214 || sha3_width == 0 /* hash len can't be 0 */
215 || (sha3_width & 0x1f) /* should be multiple of 32 */
216 /* (because input uses up to 8 byte wide word XORs. 32/4=8) */
218 bb_error_msg_and_die("bad -a%u", sha3_width);
221 context.sha3.input_block_bytes = 1600/8 - sha3_width;
222 hash_len = sha3_width/2;
226 xfunc_die(); /* can't reach this */
230 RESERVE_CONFIG_UBUFFER(in_buf, 4096);
231 while ((count = safe_read(src_fd, in_buf, 4096)) > 0) {
232 update(&context, in_buf, count);
236 bb_perror_msg("can't read '%s'", filename);
237 else /* count == 0 */ {
238 final(&context, in_buf);
239 hash_value = hash_bin_to_hex(in_buf, hash_len);
241 RELEASE_CONFIG_BUFFER(in_buf);
244 if (src_fd != STDIN_FILENO) {
251 int md5_sha1_sum_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
252 int md5_sha1_sum_main(int argc UNUSED_PARAM, char **argv)
254 int return_value = EXIT_SUCCESS;
257 unsigned sha3_width = 224;
260 if (ENABLE_FEATURE_MD5_SHA1_SUM_CHECK) {
261 /* -s and -w require -c */
262 opt_complementary = "s?c:w?c";
263 /* -b "binary", -t "text" are ignored (shaNNNsum compat) */
265 if (applet_name[3] == HASH_SHA3)
266 flags = getopt32(argv, "scwbta:+", &sha3_width);
269 flags = getopt32(argv, "scwbt");
272 if (applet_name[3] == HASH_SHA3)
273 getopt32(argv, "a:+", &sha3_width);
281 *--argv = (char*)"-";
284 if (ENABLE_FEATURE_MD5_SHA1_SUM_CHECK && (flags & FLAG_CHECK)) {
285 FILE *pre_computed_stream;
288 int count_failed = 0;
290 pre_computed_stream = xfopen_stdin(*argv);
292 while ((line = xmalloc_fgetline(pre_computed_stream)) != NULL) {
297 filename_ptr = strstr(line, " ");
298 /* handle format for binary checksums */
299 if (filename_ptr == NULL) {
300 filename_ptr = strstr(line, " *");
302 if (filename_ptr == NULL) {
303 if (flags & FLAG_WARN) {
304 bb_error_msg("invalid format");
307 return_value = EXIT_FAILURE;
311 *filename_ptr = '\0';
314 hash_value = hash_file(filename_ptr, sha3_width);
316 if (hash_value && (strcmp((char*)hash_value, line) == 0)) {
317 if (!(flags & FLAG_SILENT))
318 printf("%s: OK\n", filename_ptr);
320 if (!(flags & FLAG_SILENT))
321 printf("%s: FAILED\n", filename_ptr);
323 return_value = EXIT_FAILURE;
325 /* possible free(NULL) */
329 if (count_failed && !(flags & FLAG_SILENT)) {
330 bb_error_msg("WARNING: %d of %d computed checksums did NOT match",
331 count_failed, count_total);
333 if (count_total == 0) {
334 return_value = EXIT_FAILURE;
336 * md5sum from GNU coreutils 8.25 says:
337 * md5sum: <FILE>: no properly formatted MD5 checksum lines found
339 bb_error_msg("%s: no checksum lines found", *argv);
341 fclose_if_not_stdin(pre_computed_stream);
343 uint8_t *hash_value = hash_file(*argv, sha3_width);
344 if (hash_value == NULL) {
345 return_value = EXIT_FAILURE;
347 printf("%s %s\n", hash_value, *argv);