commit a1c776dd13ef4d9d3b3dc2ed3d25f8f478c9a27f
from: the xhr <xhr@giessen.ccc.de>
date: Thu Sep 16 12:14:28 2021 UTC

Be more careful when opening oracle JSONs

commit - fc6936c9e0f166ad38902a6d7e68571f109129ba
commit + a1c776dd13ef4d9d3b3dc2ed3d25f8f478c9a27f
blob - 91a8779dd612ffeb72a140d5f5a8978d1d731b30
blob + 7cf47e144675e585c282ee0fd081af37fc6b4e77
--- oracle.c
+++ oracle.c
@@ -186,7 +186,11 @@ read_names_from_json()
 		log_errx(1, "Cannot open %s\n", path);
 	}
 
-	oracles =  json_object_object_get(root, "Oracles");
+	if (!json_object_object_get_ex(root, "Oracles", &oracles)) {
+		log_debug("Cannot find a [Oracles] array in %s\n", path);
+		return;
+	}
+
 	n_oracles = json_object_array_length(oracles);
 
 	log_debug("number of oracles: %d\n", n_oracles);
@@ -237,7 +241,11 @@ read_moves_from_json()
 		log_errx(1, "Cannot open %s\n", path);
 	}
 
-	oracles =  json_object_object_get(root, "Oracles");
+	if (!json_object_object_get_ex(root, "Oracles", &oracles)) {
+		log_debug("Cannot find a [Oracles] array in %s\n", path);
+		return;
+	}
+
 	n_oracles = json_object_array_length(oracles);
 
 	log_debug("number of oracles: %d\n", n_oracles);
@@ -282,7 +290,11 @@ read_action_from_json()
 		log_errx(1, "Cannot open %s\n", path);
 	}
 
-	oracles =  json_object_object_get(root, "Oracles");
+	if (!json_object_object_get_ex(root, "Oracles", &oracles)) {
+		log_debug("Cannot find a [Oracles] array in %s\n", path);
+		return;
+	}
+
 	n_oracles = json_object_array_length(oracles);
 
 	log_debug("number of oracles: %d\n", n_oracles);
@@ -336,7 +348,11 @@ read_turning_from_json()
 		log_errx(1, "Cannot open %s\n", path);
 	}
 
-	oracles =  json_object_object_get(root, "Oracles");
+	if (!json_object_object_get_ex(root, "Oracles", &oracles)) {
+		log_debug("Cannot find a [Oracles] array in %s\n", path);
+		return;
+	}
+
 	n_oracles = json_object_array_length(oracles);
 
 	log_debug("number of oracles: %d\n", n_oracles);
@@ -385,7 +401,11 @@ read_places_from_json()
 		log_errx(1, "Cannot open %s\n", path);
 	}
 
-	oracles =  json_object_object_get(root, "Oracles");
+	if (!json_object_object_get_ex(root, "Oracles", &oracles)) {
+		log_debug("Cannot find a [Oracles] array in %s\n", path);
+		return;
+	}
+
 	n_oracles = json_object_array_length(oracles);
 
 	log_debug("number of oracles: %d\n", n_oracles);