#include <stdio.h>
#include <stddef.h>
#include "string.h"
+#include "util.h"
#define SHA1_HASH_SIZE 20
-extern const u8 empty_file_sha1sum[SHA1_HASH_SIZE];
+extern const u8 zero_hash[SHA1_HASH_SIZE];
-static inline bool is_empty_file_hash(const u8 hash[SHA1_HASH_SIZE])
+static inline void
+copy_hash(u8 dest[SHA1_HASH_SIZE], const u8 src[SHA1_HASH_SIZE])
{
- return memcmp(hash, empty_file_sha1sum, SHA1_HASH_SIZE) == 0;
+ memcpy(dest, src, SHA1_HASH_SIZE);
}
+static inline void
+random_hash(u8 hash[SHA1_HASH_SIZE])
+{
+ randomize_byte_array(hash, SHA1_HASH_SIZE);
+}
+
+static inline bool
+hashes_equal(const u8 h1[SHA1_HASH_SIZE], const u8 h2[SHA1_HASH_SIZE])
+{
+ return memcmp(h1, h2, SHA1_HASH_SIZE) == 0;
+}
+
+static inline int
+hashes_cmp(const u8 h1[SHA1_HASH_SIZE],
+ const u8 h2[SHA1_HASH_SIZE])
+{
+ return memcmp(h1, h2, SHA1_HASH_SIZE);
+}
+
+static inline void
+print_hash(const u8 hash[SHA1_HASH_SIZE])
+{
+ print_byte_field(hash, SHA1_HASH_SIZE);
+}
+
+static inline bool
+is_zero_hash(const u8 hash[SHA1_HASH_SIZE])
+{
+ if (hash)
+ for (u8 i = 0; i < SHA1_HASH_SIZE / 4; i++)
+ if (((u32*)hash)[i])
+ return false;
+ return true;
+}
+
+static inline void
+zero_out_hash(u8 hash[SHA1_HASH_SIZE])
+{
+ memset(hash, 0, SHA1_HASH_SIZE);
+}
-extern int sha1sum(const char *filename, void *md);
#ifdef WITH_LIBCRYPTO
+
#include <openssl/sha.h>
-static inline void sha1_buffer(const void *buffer, size_t len, void *md)
+static inline void
+sha1_buffer(const void *buffer, size_t len, u8 hash[SHA1_HASH_SIZE])
{
- SHA1(buffer, len, md);
+ SHA1(buffer, len, hash);
}
-#else
-extern void sha1_buffer(const void *buffer, size_t len, void *md);
-#endif
+#define sha1_init SHA1_Init
+#define sha1_update SHA1_Update
+#define sha1_final SHA1_Final
+
+#else /* WITH_LIBCRYPTO */
+
+typedef struct {
+ u32 state[5];
+ u32 count[2];
+ u8 buffer[64];
+} SHA_CTX;
+
+extern void
+sha1_buffer(const void *buffer, size_t len, u8 hash[SHA1_HASH_SIZE]);
+
+extern void
+sha1_init(SHA_CTX *ctx);
+
+extern void
+sha1_update(SHA_CTX *ctx, const void *data, size_t len);
+
+extern void
+sha1_final(u8 hash[SHA1_HASH_SIZE], SHA_CTX *ctx);
+
+#endif /* !WITH_LIBCRYPTO */
+
+extern int
+sha1sum(const mbchar *filename, u8 hash[SHA1_HASH_SIZE]);
#endif /* _WIMLIB_SHA1_H */