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 11b68dd18291376ceb64964a904299aee956a316..dc1775a83da18424b231547a64dabf887703620d 100644 (file)
--- 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;
 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;
        char* prefix_string;

+       int r = 1;

 
        // Make a copy of the string to work on it
        char* buffer = strdup(address_string);
 
        // 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, "/");
 
        // 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);
 
        // Free temporary buffer
        free(buffer);