test-local-addresses: add more test cases

diff --git a/src/test/test-local-addresses.c b/src/test/test-local-addresses.c
index a7a684cc82012578ec1af76b16f7bbaedb14fe6d..e3d6c08d145f7d4379b0a1f96c475385889cb472 100644 (file)
--- a/src/test/test-local-addresses.c
+++ b/src/test/test-local-addresses.c
@@ -1,13 +1,18 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 
+#include <linux/if.h>
 #include <stdio.h>
 
 #include "af-list.h"
 #include "alloc-util.h"
+#include "capability-util.h"
 #include "in-addr-util.h"
 #include "local-addresses.h"
+#include "netlink-util.h"
 #include "tests.h"
 
+static bool support_rta_via = false;
+
 static void print_local_addresses(const struct local_address *a, size_t n) {
         FOREACH_ARRAY(i, a, n)
                 log_debug("%s ifindex=%i scope=%u priority=%"PRIu32" weight=%"PRIu32" address=%s",
@@ -68,4 +73,254 @@ TEST(local_addresses) {
         free(a);
 }
 
+static void check_local_addresses(sd_netlink *rtnl, int ifindex, int request_ifindex, int family) {
+        _cleanup_free_ struct local_address *a = NULL;
+        union in_addr_union u;
+        int n;
+
+        log_debug("/* Local Addresses (ifindex:%i, %s) */", request_ifindex, family == AF_UNSPEC ? "AF_UNSPEC" : af_to_name(family));
+
+        n = local_addresses(rtnl, request_ifindex, family, &a);
+        assert_se(n >= 0);
+        print_local_addresses(a, n);
+
+        assert_se(in_addr_from_string(AF_INET, "10.123.123.123", &u) >= 0);
+        assert_se(has_local_address(a, n,
+                                    &(struct local_address) {
+                                            .ifindex = ifindex,
+                                            .scope = RT_SCOPE_UNIVERSE,
+                                            .family = AF_INET,
+                                            .address = u,
+                                    }) == IN_SET(family, AF_UNSPEC, AF_INET));
+
+        assert_se(in_addr_from_string(AF_INET6, "2001:db8:0:123::123", &u) >= 0);
+        assert_se(has_local_address(a, n,
+                                    &(struct local_address) {
+                                            .ifindex = ifindex,
+                                            .scope = RT_SCOPE_UNIVERSE,
+                                            .family = AF_INET6,
+                                            .address = u,
+                                    }) == IN_SET(family, AF_UNSPEC, AF_INET6));
+
+        assert_se(in_addr_from_string(AF_INET6, "2001:db8:1:123::123", &u) >= 0);
+        assert_se(has_local_address(a, n,
+                                    &(struct local_address) {
+                                            .ifindex = ifindex,
+                                            .scope = RT_SCOPE_UNIVERSE,
+                                            .family = AF_INET6,
+                                            .address = u,
+                                    }) == IN_SET(family, AF_UNSPEC, AF_INET6));
+}
+
+static void check_local_gateways(sd_netlink *rtnl, int ifindex, int request_ifindex, int family) {
+        _cleanup_free_ struct local_address *a = NULL;
+        union in_addr_union u;
+        int n;
+
+        log_debug("/* Local Gateways (ifindex:%i, %s) */", request_ifindex, family == AF_UNSPEC ? "AF_UNSPEC" : af_to_name(family));
+
+        n = local_gateways(rtnl, request_ifindex, family, &a);
+        assert_se(n >= 0);
+        print_local_addresses(a, n);
+
+        assert_se(in_addr_from_string(AF_INET, "10.123.0.1", &u) >= 0);
+        assert_se(has_local_address(a, n,
+                                    &(struct local_address) {
+                                            .ifindex = ifindex,
+                                            .priority = 1234,
+                                            .family = AF_INET,
+                                            .address = u,
+                                    }) == IN_SET(family, AF_UNSPEC, AF_INET));
+
+        assert_se(in_addr_from_string(AF_INET6, "2001:db8:0:123::1", &u) >= 0);
+        assert_se(has_local_address(a, n,
+                                    &(struct local_address) {
+                                            .ifindex = ifindex,
+                                            .priority = 1234,
+                                            .family = AF_INET6,
+                                            .address = u,
+                                    }) == (family == AF_UNSPEC && support_rta_via));
+
+        assert_se(in_addr_from_string(AF_INET6, "2001:db8:1:123::1", &u) >= 0);
+        assert_se(has_local_address(a, n,
+                                    &(struct local_address) {
+                                            .ifindex = ifindex,
+                                            .priority = 1234,
+                                            .family = AF_INET6,
+                                            .address = u,
+                                    }) == IN_SET(family, AF_UNSPEC, AF_INET6));
+}
+
+static void check_local_outbounds(sd_netlink *rtnl, int ifindex, int request_ifindex, int family) {
+        _cleanup_free_ struct local_address *a = NULL;
+        union in_addr_union u;
+        int n;
+
+        log_debug("/* Local Outbounds (ifindex:%i, %s) */", request_ifindex, family == AF_UNSPEC ? "AF_UNSPEC" : af_to_name(family));
+
+        n = local_outbounds(rtnl, request_ifindex, family, &a);
+        assert_se(n >= 0);
+        print_local_addresses(a, n);
+
+        assert_se(in_addr_from_string(AF_INET, "10.123.123.123", &u) >= 0);
+        assert_se(has_local_address(a, n,
+                                    &(struct local_address) {
+                                            .ifindex = ifindex,
+                                            .family = AF_INET,
+                                            .address = u,
+                                    }) == IN_SET(family, AF_UNSPEC, AF_INET));
+
+        assert_se(in_addr_from_string(AF_INET6, "2001:db8:0:123::123", &u) >= 0);
+        assert_se(has_local_address(a, n,
+                                    &(struct local_address) {
+                                            .ifindex = ifindex,
+                                            .family = AF_INET6,
+                                            .address = u,
+                                    }) == (family == AF_UNSPEC && support_rta_via));
+
+        assert_se(in_addr_from_string(AF_INET6, "2001:db8:1:123::123", &u) >= 0);
+        assert_se(has_local_address(a, n,
+                                    &(struct local_address) {
+                                            .ifindex = ifindex,
+                                            .family = AF_INET6,
+                                            .address = u,
+                                    }) == IN_SET(family, AF_UNSPEC, AF_INET6));
+}
+
+TEST(local_addresses_with_dummy) {
+        _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
+        _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *message = NULL, *reply = NULL;
+        union in_addr_union u;
+        int r, ifindex;
+
+        assert_se(sd_netlink_open(&rtnl) >= 0);
+
+        /* Create a dummy interface */
+        assert_se(sd_rtnl_message_new_link(rtnl, &message, RTM_NEWLINK, 0) >= 0);
+        assert_se(sd_netlink_message_append_string(message, IFLA_IFNAME, "test-local-addr") >= 0);
+        assert_se(sd_netlink_message_open_container(message, IFLA_LINKINFO) >= 0);
+        assert_se(sd_netlink_message_append_string(message, IFLA_INFO_KIND, "dummy") >= 0);
+        r = sd_netlink_call(rtnl, message, 0, NULL);
+        if (r == -EPERM)
+                return (void) log_tests_skipped("missing required capabilities");
+        if (r == -EOPNOTSUPP)
+                return (void) log_tests_skipped("dummy network interface is not supported");
+        assert_se(r >= 0);
+        message = sd_netlink_message_unref(message);
+
+        /* Get ifindex */
+        assert_se(sd_rtnl_message_new_link(rtnl, &message, RTM_GETLINK, 0) >= 0);
+        assert_se(sd_netlink_message_append_string(message, IFLA_IFNAME, "test-local-addr") >= 0);
+        assert_se(sd_netlink_call(rtnl, message, 0, &reply) >= 0);
+        assert_se(sd_rtnl_message_link_get_ifindex(reply, &ifindex) >= 0);
+        assert_se(ifindex > 0);
+        message = sd_netlink_message_unref(message);
+        reply = sd_netlink_message_unref(reply);
+
+        /* Bring the interface up */
+        assert_se(sd_rtnl_message_new_link(rtnl, &message, RTM_SETLINK, ifindex) >= 0);
+        assert_se(sd_rtnl_message_link_set_flags(message, IFF_UP, IFF_UP) >= 0);
+        assert_se(sd_netlink_call(rtnl, message, 0, NULL) >= 0);
+        message = sd_netlink_message_unref(message);
+
+        /* Add an IPv4 address */
+        assert_se(sd_rtnl_message_new_addr_update(rtnl, &message, ifindex, AF_INET) >= 0);
+        assert_se(sd_rtnl_message_addr_set_scope(message, RT_SCOPE_UNIVERSE) >= 0);
+        assert_se(sd_rtnl_message_addr_set_prefixlen(message, 16) >= 0);
+        assert_se(in_addr_from_string(AF_INET, "10.123.123.123", &u) >= 0);
+        assert_se(sd_netlink_message_append_in_addr(message, IFA_LOCAL, &u.in) >= 0);
+        assert_se(in_addr_from_string(AF_INET, "10.123.255.255", &u) >= 0);
+        assert_se(sd_netlink_message_append_in_addr(message, IFA_BROADCAST, &u.in) >= 0);
+        assert_se(sd_netlink_call(rtnl, message, 0, NULL) >= 0);
+        message = sd_netlink_message_unref(message);
+
+        /* Add IPv6 addresses */
+        assert_se(sd_rtnl_message_new_addr_update(rtnl, &message, ifindex, AF_INET6) >= 0);
+        assert_se(sd_rtnl_message_addr_set_scope(message, RT_SCOPE_UNIVERSE) >= 0);
+        assert_se(sd_rtnl_message_addr_set_prefixlen(message, 64) >= 0);
+        assert_se(in_addr_from_string(AF_INET6, "2001:db8:0:123::123", &u) >= 0);
+        assert_se(sd_netlink_message_append_in6_addr(message, IFA_LOCAL, &u.in6) >= 0);
+        assert_se(sd_netlink_message_append_u32(message, IFA_FLAGS, IFA_F_NODAD) >= 0);
+        assert_se(sd_netlink_call(rtnl, message, 0, NULL) >= 0);
+        message = sd_netlink_message_unref(message);
+
+        assert_se(sd_rtnl_message_new_addr_update(rtnl, &message, ifindex, AF_INET6) >= 0);
+        assert_se(sd_rtnl_message_addr_set_scope(message, RT_SCOPE_UNIVERSE) >= 0);
+        assert_se(sd_rtnl_message_addr_set_prefixlen(message, 64) >= 0);
+        assert_se(in_addr_from_string(AF_INET6, "2001:db8:1:123::123", &u) >= 0);
+        assert_se(sd_netlink_message_append_in6_addr(message, IFA_LOCAL, &u.in6) >= 0);
+        assert_se(sd_netlink_message_append_u32(message, IFA_FLAGS, IFA_F_NODAD) >= 0);
+        assert_se(sd_netlink_call(rtnl, message, 0, NULL) >= 0);
+        message = sd_netlink_message_unref(message);
+
+        /* Add an IPv4 default gateway (RTA_GATEWAY) */
+        assert_se(sd_rtnl_message_new_route(rtnl, &message, RTM_NEWROUTE, AF_INET, RTPROT_STATIC) >= 0);
+        assert_se(sd_rtnl_message_route_set_scope(message, RT_SCOPE_UNIVERSE) >= 0);
+        assert_se(sd_rtnl_message_route_set_type(message, RTN_UNICAST) >= 0);
+        assert_se(sd_netlink_message_append_u32(message, RTA_PRIORITY, 1234) >= 0);
+        assert_se(sd_netlink_message_append_u32(message, RTA_TABLE, RT_TABLE_MAIN) >= 0);
+        assert_se(in_addr_from_string(AF_INET, "10.123.0.1", &u) >= 0);
+        assert_se(sd_netlink_message_append_in_addr(message, RTA_GATEWAY, &u.in) >= 0);
+        assert_se(sd_netlink_message_append_u32(message, RTA_OIF, ifindex) >= 0);
+        assert_se(sd_netlink_call(rtnl, message, 0, NULL) >= 0);
+        message = sd_netlink_message_unref(message);
+
+        /* Add an IPv4 default gateway (RTA_VIA) */
+        assert_se(sd_rtnl_message_new_route(rtnl, &message, RTM_NEWROUTE, AF_INET, RTPROT_STATIC) >= 0);
+        assert_se(sd_rtnl_message_route_set_scope(message, RT_SCOPE_UNIVERSE) >= 0);
+        assert_se(sd_rtnl_message_route_set_type(message, RTN_UNICAST) >= 0);
+        assert_se(sd_netlink_message_append_u32(message, RTA_PRIORITY, 1234) >= 0);
+        assert_se(sd_netlink_message_append_u32(message, RTA_TABLE, RT_TABLE_MAIN) >= 0);
+        assert_se(in_addr_from_string(AF_INET6, "2001:db8:0:123::1", &u) >= 0);
+        assert_se(sd_netlink_message_append_data(message, RTA_VIA,
+                                                 &(RouteVia) {
+                                                         .family = AF_INET6,
+                                                         .address = u,
+                                                 }, sizeof(RouteVia)) >= 0);
+        assert_se(sd_netlink_message_append_u32(message, RTA_OIF, ifindex) >= 0);
+        r = sd_netlink_call(rtnl, message, 0, NULL);
+        if (r == -EINVAL)
+                log_debug_errno(r, "RTA_VIA is not supported, ignoring: %m");
+        else
+                assert_se(r >= 0);
+        support_rta_via = r >= 0;
+        message = sd_netlink_message_unref(message);
+
+        /* Add an IPv6 default gateway */
+        assert_se(sd_rtnl_message_new_route(rtnl, &message, RTM_NEWROUTE, AF_INET6, RTPROT_STATIC) >= 0);
+        assert_se(sd_rtnl_message_route_set_type(message, RTN_UNICAST) >= 0);
+        assert_se(sd_netlink_message_append_u32(message, RTA_PRIORITY, 1234) >= 0);
+        assert_se(sd_netlink_message_append_u32(message, RTA_TABLE, RT_TABLE_MAIN) >= 0);
+        assert_se(in_addr_from_string(AF_INET6, "2001:db8:1:123::1", &u) >= 0);
+        assert_se(sd_netlink_message_append_in6_addr(message, RTA_GATEWAY, &u.in6) >= 0);
+        assert_se(sd_netlink_message_append_u32(message, RTA_OIF, ifindex) >= 0);
+        assert_se(sd_netlink_call(rtnl, message, 0, NULL) >= 0);
+        message = sd_netlink_message_unref(message);
+
+        /* Check */
+        check_local_addresses(rtnl, ifindex, 0, AF_UNSPEC);
+        check_local_addresses(rtnl, ifindex, 0, AF_INET);
+        check_local_addresses(rtnl, ifindex, 0, AF_INET6);
+        check_local_addresses(rtnl, ifindex, ifindex, AF_UNSPEC);
+        check_local_addresses(rtnl, ifindex, ifindex, AF_INET);
+        check_local_addresses(rtnl, ifindex, ifindex, AF_INET6);
+        check_local_gateways(rtnl, ifindex, 0, AF_UNSPEC);
+        check_local_gateways(rtnl, ifindex, 0, AF_INET);
+        check_local_gateways(rtnl, ifindex, 0, AF_INET6);
+        check_local_gateways(rtnl, ifindex, ifindex, AF_UNSPEC);
+        check_local_gateways(rtnl, ifindex, ifindex, AF_INET);
+        check_local_gateways(rtnl, ifindex, ifindex, AF_INET6);
+        check_local_outbounds(rtnl, ifindex, 0, AF_UNSPEC);
+        check_local_outbounds(rtnl, ifindex, 0, AF_INET);
+        check_local_outbounds(rtnl, ifindex, 0, AF_INET6);
+        check_local_outbounds(rtnl, ifindex, ifindex, AF_UNSPEC);
+        check_local_outbounds(rtnl, ifindex, ifindex, AF_INET);
+        check_local_outbounds(rtnl, ifindex, ifindex, AF_INET6);
+
+        /* Cleanup */
+        assert_se(sd_rtnl_message_new_link(rtnl, &message, RTM_DELLINK, ifindex) >= 0);
+        assert_se(sd_netlink_call(rtnl, message, 0, NULL) >= 0);
+        message = sd_netlink_message_unref(message);
+}
+
 DEFINE_TEST_MAIN(LOG_DEBUG);