X-Git-Url: https://wimlib.net/git/?a=blobdiff_plain;f=src%2Fsha1.h;h=3f500b23b43b01e82fbeb7a1732e7f30e9af1fcb;hb=c6aa9e6bfdeee0e08407d0efe02270f2ba4b62c6;hp=69398ceb0f59b2c5c12481d9a3b75c7a1f56b992;hpb=604aaba2df983e5490ac76f58a8803dc352b85f3;p=wimlib

diff --git a/src/sha1.h b/src/sha1.h
index 69398ceb..3f500b23 100644
--- a/src/sha1.h
+++ b/src/sha1.h
@@ -4,28 +4,93 @@
 #include "config.h"
 #include <stdio.h>
 #include <stddef.h>
-#include "string.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], FILE *out)
+{
+	print_byte_field(hash, SHA1_HASH_SIZE, out);
+}
+
+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 (((const 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 */
 
 #endif /* _WIMLIB_SHA1_H */