1 files changed, 82 insertions, 2 deletions

diff --git a/libpurple/plugins/ssl/ssl-gnutls.c b/libpurple/plugins/ssl/ssl-gnutls.c
index 00b691ba81..19393fa2f6 100644
--- a/libpurple/plugins/ssl/ssl-gnutls.c
+++ b/libpurple/plugins/ssl/ssl-gnutls.c
@@ -1142,6 +1142,86 @@ x509_times (PurpleCertificate *crt, time_t *activation, time_t *expiration)
 	return success;
 }
 
+static GByteArray *
+x509_get_der_data(PurpleCertificate *crt)
+{
+	gnutls_x509_crt crt_dat;
+	GByteArray *data;
+	size_t len;
+	int ret;
+
+	crt_dat = X509_GET_GNUTLS_DATA(crt);
+	g_return_val_if_fail(crt_dat, NULL);
+
+	/* Obtain the output size required */
+	len = 0;
+	ret = gnutls_x509_crt_export(crt_dat, GNUTLS_X509_FMT_DER, NULL, &len);
+	g_return_val_if_fail(ret == GNUTLS_E_SHORT_MEMORY_BUFFER, NULL);
+
+	/* Now allocate a buffer and *really* export it */
+	data = g_byte_array_sized_new(len);
+	data->len = len;
+	ret = gnutls_x509_crt_export(crt_dat, GNUTLS_X509_FMT_DER, data->data, &len);
+	if (ret != 0) {
+		purple_debug_error("gnutls/x509",
+		                   "Failed to export cert to buffer with code %d\n",
+		                   ret);
+		g_byte_array_free(data, TRUE);
+		return NULL;
+	}
+
+	return data;
+}
+
+static gchar *
+x509_display_string(PurpleCertificate *crt)
+{
+	gchar *sha_asc;
+	GByteArray *sha_bin;
+	gchar *cn;
+	time_t activation, expiration;
+	gchar *activ_str, *expir_str;
+	gchar *text;
+
+	/* Pull out the SHA1 checksum */
+	sha_bin = x509_sha1sum(crt);
+	sha_asc = purple_base16_encode_chunked(sha_bin->data, sha_bin->len);
+
+	/* Get the cert Common Name */
+	/* TODO: Will break on CA certs */
+	cn = x509_common_name(crt);
+
+	/* Get the certificate times */
+	/* TODO: Check the times against localtime */
+	/* TODO: errorcheck? */
+	if (!x509_times(crt, &activation, &expiration)) {
+		purple_debug_error("certificate",
+				   "Failed to get certificate times!\n");
+		activation = expiration = 0;
+	}
+	activ_str = g_strdup(ctime(&activation));
+	expir_str = g_strdup(ctime(&expiration));
+
+	/* Make messages */
+	text = g_strdup_printf(_("Common name: %s\n\n"
+	                         "Fingerprint (SHA1): %s\n\n"
+	                         "Activation date: %s\n"
+	                         "Expiration date: %s\n"),
+	                       cn ? cn : "(null)",
+	                       sha_asc ? sha_asc : "(null)",
+	                       activ_str ? activ_str : "(null)",
+	                       expir_str ? expir_str : "(null)");
+
+	/* Cleanup */
+	g_free(cn);
+	g_free(sha_asc);
+	g_free(activ_str);
+	g_free(expir_str);
+	g_byte_array_free(sha_bin, TRUE);
+
+	return text;
+}
+
 /* X.509 certificate operations provided by this plugin */
 static PurpleCertificateScheme x509_gnutls = {
 	"x509",                          /* Scheme name */
@@ -1158,9 +1238,9 @@ static PurpleCertificateScheme x509_gnutls = {
 	x509_check_name,                 /* Check subject name */
 	x509_times,                      /* Activation/Expiration time */
 	x509_importcerts_from_file,      /* Multiple certificates import function */
+	x509_get_der_data,               /* Binary DER data */
+	x509_display_string,             /* Display representation */
 
-	NULL,
-	NULL,
 	NULL
 
 };