Switch from gnutls to openssl for sha1

[mirror_lxc.git] / src / lxc / utils.c

diff --git a/src/lxc/utils.c b/src/lxc/utils.c
index bf193a88b847c2ab544587e44c58f9c68bffe21c..6d8a65818a35d5fa3f08b37472352f36163bdf5a 100644 (file)
--- a/src/lxc/utils.c
+++ b/src/lxc/utils.c
@@ -330,17 +330,30 @@ again:
        return status;
 }
 
-#if HAVE_LIBGNUTLS
-#include <gnutls/gnutls.h>
-#include <gnutls/crypto.h>
+#ifdef HAVE_OPENSSL
+#include <openssl/evp.h>
 
-__attribute__((constructor))
-static void gnutls_lxc_init(void)
+static int do_sha1_hash(const char *buf, int buflen, unsigned char *md_value, int *md_len)
 {
-       gnutls_global_init();
+       EVP_MD_CTX *mdctx;
+       const EVP_MD *md;
+
+       md = EVP_get_digestbyname("sha1");
+       if(!md) {
+               printf("Unknown message digest: sha1\n");
+               return -1;
+       }
+
+       mdctx = EVP_MD_CTX_new();
+       EVP_DigestInit_ex(mdctx, md, NULL);
+       EVP_DigestUpdate(mdctx, buf, buflen);
+       EVP_DigestFinal_ex(mdctx, md_value, md_len);
+       EVP_MD_CTX_free(mdctx);
+
+       return 0;
 }
 
-int sha1sum_file(char *fnam, unsigned char *digest)
+int sha1sum_file(char *fnam, unsigned char *digest, int *md_len)
 {
        char *buf;
        int ret;
@@ -394,7 +407,7 @@ int sha1sum_file(char *fnam, unsigned char *digest)
        }
 
        buf[flen] = '\0';
-       ret = gnutls_hash_fast(GNUTLS_DIG_SHA1, buf, flen, (void *)digest);
+       ret = do_sha1_hash(buf, flen, (void *)digest, md_len);
        free(buf);
        return ret;
 }