networks: Add function to check if two networks overlap

[location/libloc.git] / src / network.c

diff --git a/src/network.c b/src/network.c
index 6c08070830c9aa36cf5adecc3b5b59969d68cc58..d826511e2c12b00b9f49a3c24f8f0757e11a4f90 100644 (file)
--- a/src/network.c
+++ b/src/network.c
@@ -483,6 +483,22 @@ static int loc_network_gt(struct loc_network* self, struct loc_network* other) {
        return 0;
 }
 
+LOC_EXPORT int loc_network_overlaps(struct loc_network* self, struct loc_network* other) {
+       if (loc_network_match_address(self, &other->first_address) == 0)
+               return 1;
+
+       if (loc_network_match_address(self, &other->last_address) == 0)
+               return 1;
+
+       if (loc_network_match_address(other, &self->first_address) == 0)
+               return 1;
+
+       if (loc_network_match_address(other, &self->last_address) == 0)
+               return 1;
+
+       return 0;
+}
+
 LOC_EXPORT int loc_network_is_subnet_of(struct loc_network* self, struct loc_network* other) {
        // If the start address of the other network is smaller than this network,
        // it cannot be a subnet.