update get_devices

1 files changed, 21 insertions, 0 deletions

diff --git a/util.c b/util.c
index 6cd56ac..020485c 100644
--- a/util.c
+++ b/util.c
@@ -1,5 +1,6 @@
 #include <string.h>
 #include <stdlib.h>
+#include "util.h"
 
 #define SLMAX 100
 
@@ -25,3 +26,23 @@ char * alloc_build_string(const char *ss[])
 	res[cur] = 0;
 	return res;
 }
+
+const char *json_gets(json_object *j, const char *key)
+{
+	json_object *val;
+
+	if (json_object_object_get_ex(j, key, &val)) {
+		if (json_object_is_type(val, json_type_string))
+			return json_object_get_string(val);
+	}
+	return NULL;
+}
+
+char *json_gets_dup(json_object *j, const char *key)
+{
+	const char *t = json_gets(j, key);
+	if (t == NULL)
+		return NULL;
+	else
+		return strdup(t);
+}