+/* vi: set sw=4 ts=4: */
/*
* Copyright (C) 2003 Glenn L. McGrath
- * Copyright (C) 2003 Erik Andersen
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * Copyright (C) 2003-2004 Erik Andersen
*
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
*/
#include <fcntl.h>
#include "busybox.h"
+typedef enum { HASH_SHA1, HASH_MD5 } hash_algo_t;
#define FLAG_SILENT 1
#define FLAG_CHECK 2
#define FLAG_WARN 4
-/* This might be usefull elsewhere */
+/* This might be useful elsewhere */
static unsigned char *hash_bin_to_hex(unsigned char *hash_value,
unsigned char hash_length)
{
max = (hash_length * 2) + 2;
hex_value = xmalloc(max);
for (x = len = 0; x < hash_length; x++) {
- len += snprintf(hex_value + len, max - len, "%02x", hash_value[x]);
+ len += snprintf((char*)(hex_value + len), max - len, "%02x", hash_value[x]);
}
return (hex_value);
}
-static uint8_t *hash_file(const char *filename, uint8_t hash_algo)
+static uint8_t *hash_file(const char *filename, hash_algo_t hash_algo)
{
- uint8_t *hash_value_bin;
+ int src_fd, hash_len, count;
+ union _ctx_ {
+ sha1_ctx_t sha1;
+ md5_ctx_t md5;
+ } context;
uint8_t *hash_value = NULL;
- uint8_t hash_length;
- int src_fd;
+ RESERVE_CONFIG_UBUFFER(in_buf, 4096);
+ void (*update)(const void*, size_t, void*);
+ void (*final)(void*, void*);
if (strcmp(filename, "-") == 0) {
- src_fd = fileno(stdin);
- } else {
- src_fd = open(filename, O_RDONLY);
+ src_fd = STDIN_FILENO;
+ } else if(0 > (src_fd = open(filename, O_RDONLY))) {
+ bb_perror_msg("%s", filename);
+ return NULL;
}
- if (hash_algo == HASH_MD5) {
- hash_length = 16;
+ /* figure specific hash algorithims */
+ if (ENABLE_MD5SUM && hash_algo==HASH_MD5) {
+ md5_begin(&context.md5);
+ update = (void (*)(const void*, size_t, void*))md5_hash;
+ final = (void (*)(void*, void*))md5_end;
+ hash_len = 16;
+ } else if (ENABLE_SHA1SUM && hash_algo==HASH_SHA1) {
+ sha1_begin(&context.sha1);
+ update = (void (*)(const void*, size_t, void*))sha1_hash;
+ final = (void (*)(void*, void*))sha1_end;
+ hash_len = 20;
} else {
- hash_length = 20;
+ bb_error_msg_and_die("algorithm not supported");
}
- hash_value_bin = xmalloc(hash_length);
+ while (0 < (count = read(src_fd, in_buf, 4096))) {
+ update(in_buf, count, &context);
+ }
- if ((src_fd != -1) && (hash_fd(src_fd, -1, hash_algo, hash_value_bin) != -2)) {
- hash_value = hash_bin_to_hex(hash_value_bin, hash_length);
- } else {
- bb_perror_msg("%s", filename);
+ if (count == 0) {
+ final(in_buf, &context);
+ hash_value = hash_bin_to_hex(in_buf, hash_len);
}
- close(src_fd);
+ RELEASE_CONFIG_BUFFER(in_buf);
+
+ if (src_fd != STDIN_FILENO) {
+ close(src_fd);
+ }
- return(hash_value);
+ return hash_value;
}
/* This could become a common function for md5 as well, by using md5_stream */
-extern int hash_files(int argc, char **argv, const uint8_t hash_algo)
+static int hash_files(int argc, char **argv, hash_algo_t hash_algo)
{
int return_value = EXIT_SUCCESS;
uint8_t *hash_value;
-
-#ifdef CONFIG_FEATURE_MD5_SHA1_SUM_CHECK
unsigned int flags;
- flags = bb_getopt_ulflags(argc, argv, "scw");
-#endif
+ if (ENABLE_FEATURE_MD5_SHA1_SUM_CHECK)
+ flags = bb_getopt_ulflags(argc, argv, "scw");
-#ifdef CONFIG_FEATURE_MD5_SHA1_SUM_CHECK
- if (!(flags & FLAG_CHECK)) {
+ if (ENABLE_FEATURE_MD5_SHA1_SUM_CHECK && !(flags & FLAG_CHECK)) {
if (flags & FLAG_SILENT) {
bb_error_msg_and_die
("the -s option is meaningful only when verifying checksums");
("the -w option is meaningful only when verifying checksums");
}
}
-#endif
if (argc == optind) {
argv[argc++] = "-";
}
-#ifdef CONFIG_FEATURE_MD5_SHA1_SUM_CHECK
- if (flags & FLAG_CHECK) {
+
+ if (ENABLE_FEATURE_MD5_SHA1_SUM_CHECK && flags & FLAG_CHECK) {
FILE *pre_computed_stream;
int count_total = 0;
int count_failed = 0;
- unsigned char *file_ptr = argv[optind];
+ char *file_ptr = argv[optind];
char *line;
if (optind + 1 != argc) {
if (flags & FLAG_WARN) {
bb_error_msg("Invalid format");
}
+ count_failed++;
+ return_value = EXIT_FAILURE;
free(line);
continue;
}
hash_value = hash_file(filename_ptr, hash_algo);
- if (hash_value && (strcmp(hash_value, line) == 0)) {
+ if (hash_value && (strcmp((char*)hash_value, line) == 0)) {
if (!(flags & FLAG_SILENT))
printf("%s: OK\n", filename_ptr);
} else {
if (bb_fclose_nonstdin(pre_computed_stream) == EOF) {
bb_perror_msg_and_die("Couldnt close file %s", file_ptr);
}
- } else
-#endif
- {
- uint8_t hash_length;
-
- if (hash_algo == HASH_MD5) {
- hash_length = 16;
- } else {
- hash_length = 20;
- }
- hash_value = xmalloc(hash_length);
-
+ } else {
while (optind < argc) {
- unsigned char *file_ptr = argv[optind++];
+ char *file_ptr = argv[optind++];
hash_value = hash_file(file_ptr, hash_algo);
if (hash_value == NULL) {
}
#ifdef CONFIG_MD5SUM
-extern int md5sum_main(int argc, char **argv)
+int md5sum_main(int argc, char **argv)
{
- return(hash_files(argc, argv, HASH_MD5));
+ return (hash_files(argc, argv, HASH_MD5));
}
#endif
#ifdef CONFIG_SHA1SUM
-extern int sha1sum_main(int argc, char **argv)
+int sha1sum_main(int argc, char **argv)
{
- return(hash_files(argc, argv, HASH_SHA1));
+ return (hash_files(argc, argv, HASH_SHA1));
}
#endif
projects / oweals / busybox.git / blobdiff