1 files changed, 79 insertions, 0 deletions
diff --git a/src/jansson.c b/src/jansson.c
new file mode 100644
index 0000000..2b15240
--- /dev/null
+++ b/src/jansson.c
@@ -0,0 +1,79 @@
+/*
+ * (C) 2013 by Álvaro Neira Ayuso <alvaroneay@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <internal.h>
+#include <stdlib.h>
+#include <limits.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <arpa/inet.h>
+#include <errno.h>
+#include <string.h>
+
+#ifdef JSON_PARSING
+
+static int nft_jansson_load_int_node(json_t *root, const char *tag,
+				      json_int_t *val)
+{
+	json_t *node;
+
+	node = json_object_get(root, tag);
+	if (node == NULL) {
+		errno = EINVAL;
+		return -1;
+	}
+
+	if (!json_is_integer(node)) {
+		errno = ERANGE;
+		goto err;
+	}
+
+	*val = json_integer_value(node);
+
+	return 0;
+err:
+	return -1;
+}
+
+const char *nft_jansson_value_parse_str(json_t *root, const char *tag)
+{
+	json_t *node;
+	const char *val;
+
+	node = json_object_get(root, tag);
+	if (node == NULL)
+		return NULL;
+
+	val = json_string_value(node);
+
+	return val;
+}
+
+int nft_jansson_value_parse_val(json_t *root, const char *tag, int type,
+				  void *out)
+{
+	json_int_t val;
+
+	if (nft_jansson_load_int_node(root, tag, &val) == -1)
+		goto err;
+
+	if (nft_get_value(type, &val, out) == -1)
+		goto err;
+
+	return 0;
+err:
+	errno = ERANGE;
+	return -1;
+}
+
+bool nft_jansson_node_exist(json_t *root, const char *tag)
+{
+	return json_object_get(root, tag) != NULL;
+}
+#endif