From: Michael Tremer <michael.tremer@ipfire.org>
Date: Tue, 2 Jan 2018 17:07:03 +0000 (+0000)
Subject: Prevent segmentation fault when no prefix is present
X-Git-Tag: 0.9.0~134
X-Git-Url: http://git.ipfire.org/?p=people%2Fms%2Flibloc.git;a=commitdiff_plain;h=b61f14fc8d08c9f9698d58fa430842da60d7a09f

Prevent segmentation fault when no prefix is present

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
---

diff --git a/src/network.c b/src/network.c
index 11b68dd..dc1775a 100644
--- a/src/network.c
+++ b/src/network.c
@@ -119,7 +119,9 @@ static int parse_address(struct loc_ctx* ctx, const char* string, struct in6_add
 LOC_EXPORT int loc_network_new_from_string(struct loc_ctx* ctx, struct loc_network** network,
 		const char* address_string) {
 	struct in6_addr start_address;
+	unsigned int prefix = 0;
 	char* prefix_string;
+	int r = 1;
 
 	// Make a copy of the string to work on it
 	char* buffer = strdup(address_string);
@@ -128,11 +130,16 @@ LOC_EXPORT int loc_network_new_from_string(struct loc_ctx* ctx, struct loc_netwo
 	// Split address and prefix
 	address_string = strsep(&prefix_string, "/");
 
-	// Convert prefix to integer
-	unsigned int prefix = strtol(prefix_string, NULL, 10);
+	// Did we find a prefix?
+	if (prefix_string) {
+		// Convert prefix to integer
+		prefix = strtol(prefix_string, NULL, 10);
 
-	// Parse the address
-	int r = parse_address(ctx, address_string, &start_address);
+		if (prefix) {
+			// Parse the address
+			r = parse_address(ctx, address_string, &start_address);
+		}
+	}
 
 	// Free temporary buffer
 	free(buffer);