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Diffstat (limited to 'i/pc104/initrd/conf/busybox/coreutils/md5_sha1_sum.c')
-rw-r--r--i/pc104/initrd/conf/busybox/coreutils/md5_sha1_sum.c185
1 files changed, 185 insertions, 0 deletions
diff --git a/i/pc104/initrd/conf/busybox/coreutils/md5_sha1_sum.c b/i/pc104/initrd/conf/busybox/coreutils/md5_sha1_sum.c
new file mode 100644
index 0000000..417e90b
--- /dev/null
+++ b/i/pc104/initrd/conf/busybox/coreutils/md5_sha1_sum.c
@@ -0,0 +1,185 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Copyright (C) 2003 Glenn L. McGrath
+ * Copyright (C) 2003-2004 Erik Andersen
+ *
+ * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
+ */
+
+#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 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 hex_value;
+}
+
+static uint8_t *hash_file(const char *filename, hash_algo_t hash_algo)
+{
+ int src_fd, hash_len, count;
+ union _ctx_ {
+ sha1_ctx_t sha1;
+ md5_ctx_t md5;
+ } context;
+ uint8_t *hash_value = NULL;
+ RESERVE_CONFIG_UBUFFER(in_buf, 4096);
+ void (*update)(const void*, size_t, void*);
+ void (*final)(void*, void*);
+
+ src_fd = STDIN_FILENO;
+ if (NOT_LONE_DASH(filename)) {
+ src_fd = open(filename, O_RDONLY);
+ if (src_fd < 0) {
+ bb_perror_msg("%s", filename);
+ return NULL;
+ }
+ }
+
+ /* 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 {
+ bb_error_msg_and_die("algorithm not supported");
+ }
+
+ while (0 < (count = safe_read(src_fd, in_buf, 4096))) {
+ update(in_buf, count, &context);
+ }
+
+ if (count == 0) {
+ final(in_buf, &context);
+ 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);
+int md5_sha1_sum_main(int argc, char **argv)
+{
+ int return_value = EXIT_SUCCESS;
+ uint8_t *hash_value;
+ unsigned flags;
+ hash_algo_t hash_algo = ENABLE_MD5SUM
+ ? (ENABLE_SHA1SUM ? (**argv=='m' ? HASH_MD5 : HASH_SHA1) : HASH_MD5)
+ : HASH_SHA1;
+
+ if (ENABLE_FEATURE_MD5_SHA1_SUM_CHECK)
+ flags = getopt32(argc, argv, "scw");
+ else optind = 1;
+
+ if (ENABLE_FEATURE_MD5_SHA1_SUM_CHECK && !(flags & FLAG_CHECK)) {
+ if (flags & FLAG_SILENT) {
+ bb_error_msg_and_die
+ ("-%c is meaningful only when verifying checksums", 's');
+ } else if (flags & FLAG_WARN) {
+ bb_error_msg_and_die
+ ("-%c is meaningful only when verifying checksums", 'w');
+ }
+ }
+
+ if (argc == optind) {
+ argv[argc++] = (char*)"-";
+ }
+
+ if (ENABLE_FEATURE_MD5_SHA1_SUM_CHECK && (flags & FLAG_CHECK)) {
+ FILE *pre_computed_stream;
+ int count_total = 0;
+ int count_failed = 0;
+ char *file_ptr = argv[optind];
+ char *line;
+
+ if (optind + 1 != argc) {
+ bb_error_msg_and_die
+ ("only one argument may be specified when using -c");
+ }
+
+ pre_computed_stream = stdin;
+ if (NOT_LONE_DASH(file_ptr)) {
+ pre_computed_stream = xfopen(file_ptr, "r");
+ }
+
+ while ((line = xmalloc_getline(pre_computed_stream)) != NULL) {
+ 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, hash_algo);
+
+ 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);
+ }
+ /*
+ if (fclose_if_not_stdin(pre_computed_stream) == EOF) {
+ bb_perror_msg_and_die("cannot close file %s", file_ptr);
+ }
+ */
+ } else {
+ while (optind < argc) {
+ char *file_ptr = argv[optind++];
+
+ hash_value = hash_file(file_ptr, hash_algo);
+ if (hash_value == NULL) {
+ return_value = EXIT_FAILURE;
+ } else {
+ printf("%s %s\n", hash_value, file_ptr);
+ free(hash_value);
+ }
+ }
+ }
+ return return_value;
+}