diff options
| -rw-r--r-- | coreutils/sha1sum.c | 80 |
1 files changed, 41 insertions, 39 deletions
diff --git a/coreutils/sha1sum.c b/coreutils/sha1sum.c index d94cb4b..8056b1d 100644 --- a/coreutils/sha1sum.c +++ b/coreutils/sha1sum.c @@ -4,7 +4,7 @@ * shasum fixed with reference to coreutils and the nist fip180-1 document * which is incorrect, in section 5 * - ft(B,C,D) = (B AND C) OR ((NOT B) AND D) ( 0 <= t <= 19) - * + ft(B,C,D) = (D XOR (B AND (C XOR S))) ( 0 <= t <= 19) + * + ft(B,C,D) = (D XOR (B AND (C XOR D))) ( 0 <= t <= 19) * * Copyright (C) 1999 Scott G. Miller * Copyright (C) 2003 Glenn L. McGrath @@ -112,7 +112,7 @@ static void sha_hash(unsigned int *data, int *hash) hash[4] += e; } -static void sha1sum_stream(FILE * fd, unsigned int *hashval) +static void sha1sum_stream(FILE *fd, unsigned int *hashval) { RESERVE_CONFIG_BUFFER(buffer, 64); int length = 0; @@ -128,11 +128,6 @@ static void sha1sum_stream(FILE * fd, unsigned int *hashval) length += c; if (feof(fd) || ferror(fd)) { int i; - /* If reading from stdin we need to get rid of a tailing character */ - if (fd == stdin) { - c--; - length--; - } for (i = c; i < 61; i++) { if (i == c) { buffer[i] = 0x80; @@ -153,34 +148,37 @@ static void sha1sum_stream(FILE * fd, unsigned int *hashval) return; } -static void print_hash(unsigned short hash_length, unsigned int *hash_val, char *filename) +static void print_hash(unsigned int *hash_value, unsigned char hash_length, unsigned char *filename) { - int x; + unsigned char x; for (x = 0; x < hash_length; x++) { - printf("%08x", hash_val[x]); - } - if (filename != NULL) { - putchar(' '); - putchar(' '); - puts(filename); + printf("%08x", hash_value[x]); } - putchar('\n'); + putchar(' '); + putchar(' '); + puts(filename); } +#define FLAG_SILENT 1 +#define FLAG_CHECK 2 +#define FLAG_WARN 3 + /* This should become a common function used by sha1sum and md5sum, * it needs extra functionality first */ -extern int authenticate(const int argc, char **argv, void (*hash_ptr)(FILE *stream, unsigned int *hashval), const unsigned short hash_length) +extern int authenticate(int argc, char **argv, void (*hash_ptr)(FILE *stream, unsigned int *hashval), const unsigned char hash_length) { + unsigned int hash_value[hash_length]; + unsigned char flags = 0; int opt; - unsigned int *hashval; while ((opt = getopt(argc, argv, "sc:w")) != -1) { switch (opt) { -#if 0 case 's': /* Dont output anything, status code shows success */ + flags |= FLAG_SILENT; break; +#if 0 case 'c': /* Check a list of checksums against stored values */ break; case 'w': /* Warn of bad formatting when checking files */ @@ -191,34 +189,38 @@ extern int authenticate(const int argc, char **argv, void (*hash_ptr)(FILE *stre } } - hashval = xmalloc(hash_length * sizeof(unsigned int)); - if (argc == optind) { - hash_ptr(stdin, hashval); - print_hash(hash_length, hashval, NULL); - } else { - int i; - - for (i = optind; i < argc; i++) { - if (!strcmp(argv[i], "-")) { - hash_ptr(stdin, hashval); - print_hash(hash_length, hashval, NULL); - } else { - FILE *stream = bb_xfopen(argv[i], "r"); - hash_ptr(stream, hashval); - fclose(stream); - print_hash(hash_length, hashval, argv[i]); + argv[argc] = "-"; + } + + while (optind < argc) { + FILE *stream; + unsigned char *file_ptr = argv[optind]; + + if ((file_ptr[0] == '-') && (file_ptr[1] == '\0')) { + stream = stdin; + } else { + stream = bb_wfopen(file_ptr, "r"); + if (stream == NULL) { + return(EXIT_FAILURE); } } - } + hash_ptr(stream, hash_value); + if (!flags & FLAG_SILENT) { + print_hash(hash_value, hash_length, file_ptr); + } - free(hashval); + if (fclose(stream) == EOF) { + bb_perror_msg_and_die("Couldnt close file %s", file_ptr); + } + + optind++; + } - return 0; + return(EXIT_SUCCESS); } extern int sha1sum_main(int argc, char **argv) { - /* sha1 length is 5 nibbles */ return (authenticate(argc, argv, sha1sum_stream, 5)); } |