1 /*
2 * Copyright 2017 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 *
16 * RouteControllerTest.cpp - unit tests for RouteController.cpp
17 */
18
19 #include <gtest/gtest.h>
20
21 #include "IptablesBaseTest.h"
22 #include "NetlinkCommands.h"
23 #include "RouteController.h"
24
25 namespace android {
26 namespace net {
27
28 class RouteControllerTest : public IptablesBaseTest {
29 public:
RouteControllerTest()30 RouteControllerTest() {
31 RouteController::iptablesRestoreCommandFunction = fakeExecIptablesRestoreCommand;
32 }
33 };
34
TEST_F(RouteControllerTest,TestGetRulePriority)35 TEST_F(RouteControllerTest, TestGetRulePriority) {
36 // Expect a rule dump for these two families to contain at least the following priorities.
37 for (int family : {AF_INET, AF_INET6 }) {
38 std::set<uint32_t> expectedPriorities = {
39 0,
40 15000, // RULE_PRIORITY_LEGACY_SYSTEM
41 16000, // RULE_PRIORITY_LEGACY_NETWORK
42 32000, // RULE_PRIORITY_UNREACHABLE
43 };
44
45 NetlinkDumpCallback callback = [&expectedPriorities] (const nlmsghdr *nlh) {
46 expectedPriorities.erase(getRulePriority(nlh));
47 };
48
49 rtmsg rtm = { .rtm_family = static_cast<uint8_t>(family) };
50 iovec iov[] = {
51 { nullptr, 0 },
52 { &rtm, sizeof(rtm) },
53 };
54
55 ASSERT_EQ(0, sendNetlinkRequest(RTM_GETRULE, NETLINK_DUMP_FLAGS,
56 iov, ARRAY_SIZE(iov), &callback));
57
58 EXPECT_TRUE(expectedPriorities.empty()) <<
59 "Did not see rule with priority " << *expectedPriorities.begin() <<
60 " in dump for address family " << family;
61 }
62 }
63
TEST_F(RouteControllerTest,TestRouteFlush)64 TEST_F(RouteControllerTest, TestRouteFlush) {
65 // Pick a table number that's not used by the system.
66 const uint32_t table1 = 500;
67 const uint32_t table2 = 600;
68 static_assert(table1 < RouteController::ROUTE_TABLE_OFFSET_FROM_INDEX,
69 "Test table1 number too large");
70 static_assert(table2 < RouteController::ROUTE_TABLE_OFFSET_FROM_INDEX,
71 "Test table2 number too large");
72
73 EXPECT_EQ(0, modifyIpRoute(RTM_NEWROUTE, table1, "lo", "192.0.2.2/32", NULL));
74 EXPECT_EQ(0, modifyIpRoute(RTM_NEWROUTE, table1, "lo", "192.0.2.3/32", NULL));
75 EXPECT_EQ(0, modifyIpRoute(RTM_NEWROUTE, table2, "lo", "192.0.2.4/32", NULL));
76
77 EXPECT_EQ(0, flushRoutes(table1));
78
79 EXPECT_EQ(-ESRCH,
80 modifyIpRoute(RTM_DELROUTE, table1, "lo", "192.0.2.2/32", NULL));
81 EXPECT_EQ(-ESRCH,
82 modifyIpRoute(RTM_DELROUTE, table1, "lo", "192.0.2.3/32", NULL));
83 EXPECT_EQ(0,
84 modifyIpRoute(RTM_DELROUTE, table2, "lo", "192.0.2.4/32", NULL));
85 }
86
TEST_F(RouteControllerTest,TestModifyIncomingPacketMark)87 TEST_F(RouteControllerTest, TestModifyIncomingPacketMark) {
88 static constexpr int TEST_NETID = 30;
89 EXPECT_EQ(0, modifyIncomingPacketMark(TEST_NETID, "netdtest0", PERMISSION_NONE, true));
90 expectIptablesRestoreCommands({
91 "-t mangle -A routectrl_mangle_INPUT -i netdtest0 -j MARK --set-mark 0x3001e" });
92
93 EXPECT_EQ(0, modifyIncomingPacketMark(TEST_NETID, "netdtest0", PERMISSION_NONE, false));
94 expectIptablesRestoreCommands({
95 "-t mangle -D routectrl_mangle_INPUT -i netdtest0 -j MARK --set-mark 0x3001e" });
96 }
97
98 } // namespace net
99 } // namespace android
100