| /* vi: set sw=4 ts=4: */ |
| /* |
| * Copyright (C) 2003 Glenn L. McGrath |
| * Copyright (C) 2003-2004 Erik Andersen |
| * |
| * Licensed under GPLv2 or later, see file LICENSE in this source tree. |
| */ |
| |
| //usage:#define md5sum_trivial_usage |
| //usage: IF_FEATURE_MD5_SHA1_SUM_CHECK("[-c[sw]] ")"[FILE]..." |
| //usage:#define md5sum_full_usage "\n\n" |
| //usage: "Print" IF_FEATURE_MD5_SHA1_SUM_CHECK(" or check") " MD5 checksums" |
| //usage: IF_FEATURE_MD5_SHA1_SUM_CHECK( "\n" |
| //usage: "\n -c Check sums against list in FILEs" |
| //usage: "\n -s Don't output anything, status code shows success" |
| //usage: "\n -w Warn about improperly formatted checksum lines" |
| //usage: ) |
| //usage: |
| //usage:#define md5sum_example_usage |
| //usage: "$ md5sum < busybox\n" |
| //usage: "6fd11e98b98a58f64ff3398d7b324003\n" |
| //usage: "$ md5sum busybox\n" |
| //usage: "6fd11e98b98a58f64ff3398d7b324003 busybox\n" |
| //usage: "$ md5sum -c -\n" |
| //usage: "6fd11e98b98a58f64ff3398d7b324003 busybox\n" |
| //usage: "busybox: OK\n" |
| //usage: "^D\n" |
| //usage: |
| //usage:#define sha1sum_trivial_usage |
| //usage: IF_FEATURE_MD5_SHA1_SUM_CHECK("[-c[sw]] ")"[FILE]..." |
| //usage:#define sha1sum_full_usage "\n\n" |
| //usage: "Print" IF_FEATURE_MD5_SHA1_SUM_CHECK(" or check") " SHA1 checksums" |
| //usage: IF_FEATURE_MD5_SHA1_SUM_CHECK( "\n" |
| //usage: "\n -c Check sums against list in FILEs" |
| //usage: "\n -s Don't output anything, status code shows success" |
| //usage: "\n -w Warn about improperly formatted checksum lines" |
| //usage: ) |
| //usage: |
| //usage:#define sha256sum_trivial_usage |
| //usage: IF_FEATURE_MD5_SHA1_SUM_CHECK("[-c[sw]] ")"[FILE]..." |
| //usage:#define sha256sum_full_usage "\n\n" |
| //usage: "Print" IF_FEATURE_MD5_SHA1_SUM_CHECK(" or check") " SHA256 checksums" |
| //usage: IF_FEATURE_MD5_SHA1_SUM_CHECK( "\n" |
| //usage: "\n -c Check sums against list in FILEs" |
| //usage: "\n -s Don't output anything, status code shows success" |
| //usage: "\n -w Warn about improperly formatted checksum lines" |
| //usage: ) |
| //usage: |
| //usage:#define sha512sum_trivial_usage |
| //usage: IF_FEATURE_MD5_SHA1_SUM_CHECK("[-c[sw]] ")"[FILE]..." |
| //usage:#define sha512sum_full_usage "\n\n" |
| //usage: "Print" IF_FEATURE_MD5_SHA1_SUM_CHECK(" or check") " SHA512 checksums" |
| //usage: IF_FEATURE_MD5_SHA1_SUM_CHECK( "\n" |
| //usage: "\n -c Check sums against list in FILEs" |
| //usage: "\n -s Don't output anything, status code shows success" |
| //usage: "\n -w Warn about improperly formatted checksum lines" |
| //usage: ) |
| |
| #include "libbb.h" |
| |
| /* This is a NOEXEC applet. Be very careful! */ |
| |
| enum { |
| /* 4th letter of applet_name is... */ |
| HASH_MD5 = 's', /* "md5>s<um" */ |
| HASH_SHA1 = '1', |
| HASH_SHA256 = '2', |
| HASH_SHA512 = '5', |
| }; |
| |
| #define FLAG_SILENT 1 |
| #define FLAG_CHECK 2 |
| #define FLAG_WARN 4 |
| |
| /* This might be useful elsewhere */ |
| static unsigned char *hash_bin_to_hex(unsigned char *hash_value, |
| unsigned hash_length) |
| { |
| /* xzalloc zero-terminates */ |
| char *hex_value = xzalloc((hash_length * 2) + 1); |
| bin2hex(hex_value, (char*)hash_value, hash_length); |
| return (unsigned char *)hex_value; |
| } |
| |
| static uint8_t *hash_file(const char *filename) |
| { |
| int src_fd, hash_len, count; |
| union _ctx_ { |
| sha512_ctx_t sha512; |
| sha256_ctx_t sha256; |
| sha1_ctx_t sha1; |
| md5_ctx_t md5; |
| } context; |
| uint8_t *hash_value; |
| void FAST_FUNC (*update)(void*, const void*, size_t); |
| void FAST_FUNC (*final)(void*, void*); |
| char hash_algo; |
| |
| src_fd = open_or_warn_stdin(filename); |
| if (src_fd < 0) { |
| return NULL; |
| } |
| |
| hash_algo = applet_name[3]; |
| |
| /* figure specific hash algorithms */ |
| if (ENABLE_MD5SUM && hash_algo == HASH_MD5) { |
| md5_begin(&context.md5); |
| update = (void*)md5_hash; |
| final = (void*)md5_end; |
| hash_len = 16; |
| } else if (ENABLE_SHA1SUM && hash_algo == HASH_SHA1) { |
| sha1_begin(&context.sha1); |
| update = (void*)sha1_hash; |
| final = (void*)sha1_end; |
| hash_len = 20; |
| } else if (ENABLE_SHA256SUM && hash_algo == HASH_SHA256) { |
| sha256_begin(&context.sha256); |
| update = (void*)sha256_hash; |
| final = (void*)sha256_end; |
| hash_len = 32; |
| } else if (ENABLE_SHA512SUM && hash_algo == HASH_SHA512) { |
| sha512_begin(&context.sha512); |
| update = (void*)sha512_hash; |
| final = (void*)sha512_end; |
| hash_len = 64; |
| } else { |
| xfunc_die(); /* can't reach this */ |
| } |
| |
| { |
| RESERVE_CONFIG_UBUFFER(in_buf, 4096); |
| while ((count = safe_read(src_fd, in_buf, 4096)) > 0) { |
| update(&context, in_buf, count); |
| } |
| hash_value = NULL; |
| if (count == 0) { |
| final(&context, in_buf); |
| hash_value = hash_bin_to_hex(in_buf, hash_len); |
| } |
| RELEASE_CONFIG_BUFFER(in_buf); |
| } |
| |
| if (src_fd != STDIN_FILENO) { |
| close(src_fd); |
| } |
| |
| return hash_value; |
| } |
| |
| int md5_sha1_sum_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
| int md5_sha1_sum_main(int argc UNUSED_PARAM, char **argv) |
| { |
| int return_value = EXIT_SUCCESS; |
| unsigned flags; |
| |
| if (ENABLE_FEATURE_MD5_SHA1_SUM_CHECK) { |
| /* -b "binary", -t "text" are ignored (shaNNNsum compat) */ |
| flags = getopt32(argv, "scwbt"); |
| argv += optind; |
| //argc -= optind; |
| } else { |
| argv += 1; |
| //argc -= 1; |
| } |
| if (!*argv) |
| *--argv = (char*)"-"; |
| |
| if (ENABLE_FEATURE_MD5_SHA1_SUM_CHECK && !(flags & FLAG_CHECK)) { |
| if (flags & FLAG_SILENT) { |
| bb_error_msg_and_die("-%c is meaningful only with -c", 's'); |
| } |
| if (flags & FLAG_WARN) { |
| bb_error_msg_and_die("-%c is meaningful only with -c", 'w'); |
| } |
| } |
| |
| do { |
| if (ENABLE_FEATURE_MD5_SHA1_SUM_CHECK && (flags & FLAG_CHECK)) { |
| FILE *pre_computed_stream; |
| char *line; |
| int count_total = 0; |
| int count_failed = 0; |
| |
| pre_computed_stream = xfopen_stdin(*argv); |
| |
| while ((line = xmalloc_fgetline(pre_computed_stream)) != NULL) { |
| uint8_t *hash_value; |
| char *filename_ptr; |
| |
| count_total++; |
| filename_ptr = strstr(line, " "); |
| /* handle format for binary checksums */ |
| if (filename_ptr == NULL) { |
| filename_ptr = strstr(line, " *"); |
| } |
| if (filename_ptr == NULL) { |
| if (flags & FLAG_WARN) { |
| bb_error_msg("invalid format"); |
| } |
| count_failed++; |
| return_value = EXIT_FAILURE; |
| free(line); |
| continue; |
| } |
| *filename_ptr = '\0'; |
| filename_ptr += 2; |
| |
| hash_value = hash_file(filename_ptr); |
| |
| if (hash_value && (strcmp((char*)hash_value, line) == 0)) { |
| if (!(flags & FLAG_SILENT)) |
| printf("%s: OK\n", filename_ptr); |
| } else { |
| if (!(flags & FLAG_SILENT)) |
| printf("%s: FAILED\n", filename_ptr); |
| count_failed++; |
| return_value = EXIT_FAILURE; |
| } |
| /* possible free(NULL) */ |
| free(hash_value); |
| free(line); |
| } |
| if (count_failed && !(flags & FLAG_SILENT)) { |
| bb_error_msg("WARNING: %d of %d computed checksums did NOT match", |
| count_failed, count_total); |
| } |
| fclose_if_not_stdin(pre_computed_stream); |
| } else { |
| uint8_t *hash_value = hash_file(*argv); |
| if (hash_value == NULL) { |
| return_value = EXIT_FAILURE; |
| } else { |
| printf("%s %s\n", hash_value, *argv); |
| free(hash_value); |
| } |
| } |
| } while (*++argv); |
| |
| return return_value; |
| } |