*/
/*
- * Copyright (C) 2012 Eric Biggers
+ * Copyright (C) 2012, 2013 Eric Biggers
*
* This file is part of wimlib, a library for working with WIM files.
*
* along with wimlib; if not, see http://www.gnu.org/licenses/.
*/
-#include "util.h"
-#include "wimlib.h"
-#include "sha1.h"
-#include "endianness.h"
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include "wimlib/sha1.h"
+
#include <string.h>
/* The SHA1 support in wimlib can use an external libcrypto (part of openssl) or
#ifndef WITH_LIBCRYPTO
/* Initialize new context */
-void sha1_init(SHA_CTX* context)
+void
+sha1_init(SHA_CTX* context)
{
/* SHA1 initialization constants */
context->state[0] = 0x67452301;
}
#ifdef ENABLE_SSSE3_SHA1
-extern void sha1_update_intel(int *hash, const char* input, size_t num_blocks);
+extern void
+sha1_update_intel(int *hash, const void* input, size_t num_blocks);
-void sha1_update(SHA_CTX *context, const u8 data[], size_t len)
+void
+sha1_update(SHA_CTX *context, const void *data, size_t len)
{
sha1_update_intel((int*)&context->state, data, len / 64);
size_t j = (context->count[0] >> 3) & 63;
- if ((context->count[0] += len << 3) < (len << 3)) context->count[1]++;
+ if ((context->count[0] += len << 3) < (len << 3))
+ context->count[1]++;
context->count[1] += (len >> 29);
}
#include <stdlib.h>
-void ssse3_not_found()
+void
+ssse3_not_found()
{
fprintf(stderr,
"Cannot calculate SHA1 message digest: CPU does not support SSSE3\n"
#define R4(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0xCA62C1D6+rol(v,5);w=rol(w,30);
/* Hash a single 512-bit block. This is the core of the algorithm. */
-static void sha1_transform(u32 state[5], const u8 buffer[64])
+static void
+sha1_transform(u32 state[5], const u8 buffer[64])
{
u32 a, b, c, d, e;
typedef union {
state[4] += e;
}
-void sha1_update(SHA_CTX* context, const u8 data[], const size_t len)
+void
+sha1_update(SHA_CTX* context, const void *data, const size_t len)
{
size_t i, j;
} else {
i = 0;
}
- memcpy(&context->buffer[j], &data[i], len - i);
+ memcpy(&context->buffer[j], data + i, len - i);
}
#endif /* !ENABLE_SSSE3_SHA1 */
/* Add padding and return the message digest. */
-void sha1_final(u8 md[SHA1_HASH_SIZE], SHA_CTX* context)
+void
+sha1_final(u8 md[SHA1_HASH_SIZE], SHA_CTX* context)
{
u32 i;
u8 finalcount[8];
}
}
-void sha1_buffer(const u8 buffer[], size_t len, u8 md[SHA1_HASH_SIZE])
+void
+sha1_buffer(const void *buffer, size_t len, u8 md[SHA1_HASH_SIZE])
{
SHA_CTX ctx;
sha1_init(&ctx);
}
#endif /* !WITH_LIBCRYPTO */
-
-static int sha1_stream(FILE *fp, u8 md[SHA1_HASH_SIZE])
-{
- char buf[BUFFER_SIZE];
- size_t bytes_read;
- SHA_CTX ctx;
- sha1_init(&ctx);
- while (1) {
- bytes_read = fread(buf, 1, sizeof(buf), fp);
- sha1_update(&ctx, buf, bytes_read);
- if (bytes_read < sizeof(buf)) {
- if (ferror(fp))
- return WIMLIB_ERR_READ;
- break;
- }
- }
- sha1_final(md, &ctx);
- return 0;
-
-}
-
-/* Calculates the SHA1 message digest of a file. @md must point to a buffer of
- * length 20 bytes into which the message digest is written. */
-int sha1sum(const char *filename, u8 md[SHA1_HASH_SIZE])
-{
- FILE *fp;
- int ret;
-
- fp = fopen(filename, "rb");
- if (!fp) {
- ERROR_WITH_ERRNO("Cannot open the file `%s' for reading",
- filename);
- return WIMLIB_ERR_OPEN;
- }
- ret = sha1_stream(fp, md);
- if (ret != 0) {
- ERROR_WITH_ERRNO("Error calculating SHA1 message digest of "
- "`%s'", filename);
- }
- fclose(fp);
- return ret;
-}