helper.c -> file.c

1 files changed, 74 insertions, 0 deletions

diff --git a/lib/file.c b/lib/file.c
new file mode 100644
index 0000000000..a2b1595c8c
--- /dev/null
+++ b/lib/file.c
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2005-2015 Free Software Foundation, Inc.
+ * Copyright (C) 2015 Nikos Mavrogiannopoulos, Inc.
+ *
+ * Author: Nikos Mavrogiannopoulos
+ *
+ * This file is part of GnuTLS.
+ *
+ * The GnuTLS is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+#include "gnutls_int.h"
+#include <file.h>
+#include <read-file.h>
+
+int _gnutls_file_exists(const char *file)
+{
+	FILE *fd;
+
+	fd = fopen(file, "r");
+	if (fd == NULL)
+		return -1;
+
+	fclose(fd);
+	return 0;
+}
+
+/**
+ * gnutls_load_file:
+ * @filename: the name of the file to load
+ * @data: Where the file will be stored
+ *
+ * This function will load a file into a datum. The data are
+ * zero terminated but the terminating null is not included in length.
+ * The returned data are allocated using gnutls_malloc().
+ *
+ * Returns: On success, %GNUTLS_E_SUCCESS (0) is returned, otherwise
+ *   an error code is returned.
+ *
+ * Since 3.1.0
+ **/
+int gnutls_load_file(const char *filename, gnutls_datum_t * data)
+{
+	size_t len;
+
+	data->data = (void *) read_binary_file(filename, &len);
+	if (data->data == NULL)
+		return GNUTLS_E_FILE_ERROR;
+
+	if (malloc != gnutls_malloc) {
+		void *tmp = gnutls_malloc(len);
+
+		memcpy(tmp, data->data, len);
+		free(data->data);
+		data->data = tmp;
+	}
+
+	data->size = len;
+
+	return 0;
+}
+