Calculate message hash and use it.

[cascardo/libreceita.git] / decfile.c

diff --git a/decfile.c b/decfile.c
index edd0937..001541d 100644 (file)
--- a/decfile.c
+++ b/decfile.c
@@ -23,6 +23,7 @@
 #include <stdlib.h>
 #include <errno.h>
 #include <unistd.h>
+#include <gcrypt.h>
 #include "pmhash.h"
 #include "rnet_message.h"
 
@@ -326,3 +327,18 @@ struct rnet_message * rnet_decfile_get_file(struct rnet_decfile *decfile)
 {
        return decfile->message;
 }
+
+char * rnet_decfile_get_file_hash(struct rnet_decfile *decfile)
+{
+       char *hash;
+       size_t len;
+       if (gcry_md_test_algo(GCRY_MD_MD5))
+               return NULL;
+       len = gcry_md_get_algo_dlen(GCRY_MD_MD5);
+       hash = malloc(len);
+       if (!hash)
+               return NULL;
+       gcry_md_hash_buffer(GCRY_MD_MD5, hash, decfile->message->buffer,
+                                       decfile->message->len);
+       return hash;
+}