X-Git-Url: https://wimlib.net/git/?p=wimlib;a=blobdiff_plain;f=src%2Fsha1.h;h=c8fe87ff20800182b82cedda72a435785ce97ac3;hp=e73b62a87881ad16f1ae19d1ce6cd0e33d6b5677;hb=9fb3aaca115429b0af2a623bf20bfceef74f047f;hpb=885632f08c75c1d7bb5d25436231c78f6ad7e0c0

diff --git a/src/sha1.h b/src/sha1.h
index e73b62a8..c8fe87ff 100644
--- a/src/sha1.h
+++ b/src/sha1.h
@@ -4,25 +4,96 @@
 #include "config.h"
 #include <stdio.h>
 #include <stddef.h>
+#include "string.h"
+#include "util.h"
+
+#define SHA1_HASH_SIZE 20
+
+extern const u8 zero_hash[SHA1_HASH_SIZE];
+
+static inline void
+copy_hash(u8 dest[SHA1_HASH_SIZE], const u8 src[SHA1_HASH_SIZE])
+{
+	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);
+}
 
-/* Compute SHA1 message digest for bytes read from STREAM.  The
-   resulting message digest number will be written into the 20 bytes
-   beginning at RESBLOCK.  */
-extern int sha1_stream(FILE * stream, void *resblock);
 
 #ifdef WITH_LIBCRYPTO
+
 #include <openssl/sha.h>
-static inline void *sha1_buffer(const char *buffer, size_t len, void *resblock)
+static inline void
+sha1_buffer(const void *buffer, size_t len, u8 hash[SHA1_HASH_SIZE])
 {
-	return SHA1(buffer, len, resblock);
+	SHA1(buffer, len, hash);
 }
-#else
-/* Compute SHA1 message digest for LEN bytes beginning at BUFFER.  The
-   result is always in little endian byte order, so that a byte-wise
-   output yields to the wanted ASCII representation of the message
-   digest.  */
-extern void *sha1_buffer(const char *buffer, size_t len, void *resblock);
-#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 */