networkd: add a number of calls to manipulate in_addr_union structs

1 files changed, 82 insertions, 0 deletions

diff --git a/src/test/test-socket-util.c b/src/test/test-socket-util.c
index 716efd8f9..9f42dbf4e 100644
--- a/src/test/test-socket-util.c
+++ b/src/test/test-socket-util.c
@@ -20,6 +20,7 @@
 #include "socket-util.h"
 #include "util.h"
 #include "macro.h"
+#include "log.h"
 
 static void test_socket_address_parse(void) {
         SocketAddress a;
@@ -137,9 +138,90 @@ static void test_socket_address_get_path(void) {
         assert_se(streq(socket_address_get_path(&a), "/foo/bar"));
 }
 
+static void test_in_addr_prefix_intersect_one(unsigned f, const char *a, unsigned apl, const char *b, unsigned bpl, int result) {
+        union in_addr_union ua, ub;
+
+        assert_se(in_addr_from_string(f, a, &ua) >= 0);
+        assert_se(in_addr_from_string(f, b, &ub) >= 0);
+
+        assert_se(in_addr_prefix_intersect(f, &ua, apl, &ub, bpl) == result);
+}
+
+static void test_in_addr_prefix_intersect(void) {
+
+        test_in_addr_prefix_intersect_one(AF_INET, "255.255.255.255", 32, "255.255.255.254", 32, 0);
+        test_in_addr_prefix_intersect_one(AF_INET, "255.255.255.255", 0, "255.255.255.255", 32, 1);
+        test_in_addr_prefix_intersect_one(AF_INET, "0.0.0.0", 0, "47.11.8.15", 32, 1);
+
+        test_in_addr_prefix_intersect_one(AF_INET, "1.1.1.1", 24, "1.1.1.1", 24, 1);
+        test_in_addr_prefix_intersect_one(AF_INET, "2.2.2.2", 24, "1.1.1.1", 24, 0);
+
+        test_in_addr_prefix_intersect_one(AF_INET, "1.1.1.1", 24, "1.1.1.127", 25, 1);
+        test_in_addr_prefix_intersect_one(AF_INET, "1.1.1.1", 24, "1.1.1.127", 26, 1);
+        test_in_addr_prefix_intersect_one(AF_INET, "1.1.1.1", 25, "1.1.1.127", 25, 1);
+        test_in_addr_prefix_intersect_one(AF_INET, "1.1.1.1", 25, "1.1.1.255", 25, 0);
+
+        test_in_addr_prefix_intersect_one(AF_INET6, "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff", 128, "ffff:ffff:ffff:ffff:ffff:ffff:ffff:fffe", 128, 0);
+        test_in_addr_prefix_intersect_one(AF_INET6, "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff", 0, "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff", 128, 1);
+        test_in_addr_prefix_intersect_one(AF_INET6, "::", 0, "beef:beef:beef:beef:beef:beef:beef:beef", 128, 1);
+
+        test_in_addr_prefix_intersect_one(AF_INET6, "1::2", 64, "1::2", 64, 1);
+        test_in_addr_prefix_intersect_one(AF_INET6, "2::2", 64, "1::2", 64, 0);
+
+        test_in_addr_prefix_intersect_one(AF_INET6, "1::1", 120, "1::007f", 121, 1);
+        test_in_addr_prefix_intersect_one(AF_INET6, "1::1", 120, "1::007f", 122, 1);
+        test_in_addr_prefix_intersect_one(AF_INET6, "1::1", 121, "1::007f", 121, 1);
+        test_in_addr_prefix_intersect_one(AF_INET6, "1::1", 121, "1::00ff", 121, 0);
+}
+
+static void test_in_addr_prefix_next_one(unsigned f, const char *before, unsigned pl, const char *after) {
+        union in_addr_union ubefore, uafter, t;
+
+        assert_se(in_addr_from_string(f, before, &ubefore) >= 0);
+
+        t = ubefore;
+        assert_se((in_addr_prefix_next(f, &t, pl) > 0) == !!after);
+
+        if (after) {
+                assert_se(in_addr_from_string(f, after, &uafter) >= 0);
+                assert_se(in_addr_equal(f, &t, &uafter) > 0);
+        }
+}
+
+static void test_in_addr_prefix_next(void) {
+
+        test_in_addr_prefix_next_one(AF_INET, "192.168.0.0", 24, "192.168.1.0");
+        test_in_addr_prefix_next_one(AF_INET, "192.168.0.0", 16, "192.169.0.0");
+        test_in_addr_prefix_next_one(AF_INET, "192.168.0.0", 20, "192.168.16.0");
+
+        test_in_addr_prefix_next_one(AF_INET, "0.0.0.0", 32, "0.0.0.1");
+        test_in_addr_prefix_next_one(AF_INET, "255.255.255.255", 32, NULL);
+        test_in_addr_prefix_next_one(AF_INET, "255.255.255.0", 24, NULL);
+
+        test_in_addr_prefix_next_one(AF_INET6, "4400::", 128, "4400::0001");
+        test_in_addr_prefix_next_one(AF_INET6, "4400::", 120, "4400::0100");
+        test_in_addr_prefix_next_one(AF_INET6, "4400::", 127, "4400::0002");
+        test_in_addr_prefix_next_one(AF_INET6, "4400::", 8, "4500::");
+        test_in_addr_prefix_next_one(AF_INET6, "4400::", 7, "4600::");
+
+        test_in_addr_prefix_next_one(AF_INET6, "::", 128, "::1");
+
+        test_in_addr_prefix_next_one(AF_INET6, "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff", 128, NULL);
+        test_in_addr_prefix_next_one(AF_INET6, "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ff00", 120, NULL);
+
+}
+
 int main(int argc, char *argv[]) {
+
+        log_set_max_level(LOG_DEBUG);
+
         test_socket_address_parse();
         test_socket_address_parse_netlink();
         test_socket_address_equal();
         test_socket_address_get_path();
+
+        test_in_addr_prefix_intersect();
+        test_in_addr_prefix_next();
+
+        return 0;
 }