From: Stephan Bosch <stephan.bosch@dovecot.fi>
Date: Sun, 6 Jan 2019 22:03:13 +0000 (+0100)
Subject: lib: hash-method: Add hash_method_get_digest().
X-Git-Tag: 2.3.10~240
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=1f1689c8ea7275b8526d0dd5b5f22f89dc9ee6d6;p=thirdparty%2Fdovecot%2Fcore.git

lib: hash-method: Add hash_method_get_digest().
---

diff --git a/src/lib/hash-method.c b/src/lib/hash-method.c
index a485c00aa4..c5e55023a5 100644
--- a/src/lib/hash-method.c
+++ b/src/lib/hash-method.c
@@ -48,18 +48,28 @@ static void hash_method_result_size(void *context, unsigned char *result_r)
 	result_r[7] = (*ctx & 0x00000000000000ffULL);
 }
 
-buffer_t *t_hash_data(const struct hash_method *meth,
-		      const void *data, size_t data_len)
+void hash_method_get_digest(const struct hash_method *meth,
+			    const void *data, size_t data_len,
+			    unsigned char *result_r)
 {
 	i_assert(meth != NULL);
 	i_assert(data_len == 0 || data != NULL);
 	unsigned char ctx[meth->context_size];
+
+	meth->init(ctx);
+	meth->loop(ctx, data == NULL ? "" : data, data_len);
+	meth->result(ctx, result_r);
+}
+
+buffer_t *t_hash_data(const struct hash_method *meth,
+		      const void *data, size_t data_len)
+{
+	i_assert(meth != NULL);
 	buffer_t *result = t_buffer_create(meth->digest_size);
 	unsigned char *resptr = buffer_append_space_unsafe(result,
 							   meth->digest_size);
-	meth->init(ctx);
-	meth->loop(ctx, data == NULL ? "" : data, data_len);
-	meth->result(ctx, resptr);
+
+	hash_method_get_digest(meth, data, data_len, resptr);
 	return result;
 }
 
diff --git a/src/lib/hash-method.h b/src/lib/hash-method.h
index 1340e163f0..2c68b91065 100644
--- a/src/lib/hash-method.h
+++ b/src/lib/hash-method.h
@@ -20,6 +20,10 @@ const struct hash_method *hash_method_lookup(const char *name);
 /* NULL-terminated list of all hash methods */
 extern const struct hash_method *hash_methods[];
 
+void hash_method_get_digest(const struct hash_method *meth,
+			    const void *data, size_t data_len,
+			    unsigned char *result_r);
+
 /** Simple datastack helpers for digesting (hashing)
 
  * USAGE: