| // Copyright 2019 The Chromium OS Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "patchpanel/datapath.h" |
| |
| #include <linux/if_tun.h> |
| #include <linux/sockios.h> |
| #include <net/if.h> |
| #include <sys/ioctl.h> |
| |
| #include <utility> |
| #include <vector> |
| |
| #include <base/bind.h> |
| #include <base/callback_helpers.h> |
| #include <base/strings/string_split.h> |
| #include <base/strings/string_util.h> |
| #include <gmock/gmock.h> |
| #include <gtest/gtest.h> |
| |
| #include "patchpanel/mock_firewall.h" |
| #include "patchpanel/net_util.h" |
| |
| using testing::_; |
| using testing::ElementsAre; |
| using testing::ElementsAreArray; |
| using testing::Return; |
| using testing::StrEq; |
| |
| namespace patchpanel { |
| namespace { |
| |
| // TODO(hugobenichi) Centralize this constant definition |
| constexpr pid_t kTestPID = -2; |
| |
| std::vector<ioctl_req_t> ioctl_reqs; |
| std::vector<std::pair<std::string, struct rtentry>> ioctl_rtentry_args; |
| std::vector<std::pair<std::string, struct ifreq>> ioctl_ifreq_args; |
| |
| // Capture all ioctls and succeed. |
| int ioctl_req_cap(int fd, ioctl_req_t req, ...) { |
| ioctl_reqs.push_back(req); |
| return 0; |
| } |
| |
| // Capture ioctls for SIOCADDRT and SIOCDELRT and succeed. |
| int ioctl_rtentry_cap(int fd, ioctl_req_t req, struct rtentry* arg) { |
| ioctl_reqs.push_back(req); |
| ioctl_rtentry_args.push_back({"", *arg}); |
| // Copy the string poited by rtentry.rt_dev because Add/DeleteIPv4Route pass |
| // this value to ioctl() on the stack. |
| if (arg->rt_dev) { |
| auto& cap = ioctl_rtentry_args.back(); |
| cap.first = std::string(arg->rt_dev); |
| cap.second.rt_dev = (char*)cap.first.c_str(); |
| } |
| return 0; |
| } |
| |
| // Capture ifreq ioctls operations and succeed. |
| int ioctl_ifreq_cap(int fd, ioctl_req_t req, void* arg) { |
| ioctl_reqs.push_back(req); |
| switch (req) { |
| case SIOCBRADDBR: |
| case SIOCBRDELBR: { |
| ioctl_ifreq_args.push_back({std::string(static_cast<char*>(arg)), {}}); |
| break; |
| } |
| case SIOCBRADDIF: { |
| struct ifreq* ifr = static_cast<struct ifreq*>(arg); |
| ioctl_ifreq_args.push_back({std::string(ifr->ifr_name), *ifr}); |
| break; |
| } |
| } |
| return 0; |
| } |
| |
| std::vector<std::string> SplitCommand(const std::string& command) { |
| return base::SplitString(command, " ", |
| base::WhitespaceHandling::TRIM_WHITESPACE, |
| base::SplitResult::SPLIT_WANT_NONEMPTY); |
| } |
| |
| } // namespace |
| |
| using IpFamily::Dual; |
| using IpFamily::IPv4; |
| using IpFamily::IPv6; |
| |
| class MockProcessRunner : public MinijailedProcessRunner { |
| public: |
| MockProcessRunner() = default; |
| ~MockProcessRunner() = default; |
| |
| MOCK_METHOD4(ip, |
| int(const std::string& obj, |
| const std::string& cmd, |
| const std::vector<std::string>& args, |
| bool log_failures)); |
| MOCK_METHOD4(ip6, |
| int(const std::string& obj, |
| const std::string& cmd, |
| const std::vector<std::string>& args, |
| bool log_failures)); |
| MOCK_METHOD4(iptables, |
| int(const std::string& table, |
| const std::vector<std::string>& argv, |
| bool log_failures, |
| std::string* output)); |
| MOCK_METHOD4(ip6tables, |
| int(const std::string& table, |
| const std::vector<std::string>& argv, |
| bool log_failures, |
| std::string* output)); |
| MOCK_METHOD3(sysctl_w, |
| int(const std::string& key, |
| const std::string& value, |
| bool log_failures)); |
| MOCK_METHOD3(ip_netns_attach, |
| int(const std::string& netns_name, |
| pid_t netns_pid, |
| bool log_failures)); |
| MOCK_METHOD2(ip_netns_delete, |
| int(const std::string& netns_name, bool log_failures)); |
| }; |
| |
| void Verify_ip(MockProcessRunner& runner, const std::string& command) { |
| auto args = SplitCommand(command); |
| const auto object = args[0]; |
| const auto action = args[1]; |
| args.erase(args.begin()); |
| args.erase(args.begin()); |
| EXPECT_CALL(runner, |
| ip(StrEq(object), StrEq(action), ElementsAreArray(args), _)); |
| } |
| |
| void Verify_ip6(MockProcessRunner& runner, const std::string& command) { |
| auto args = SplitCommand(command); |
| const auto object = args[0]; |
| const auto action = args[1]; |
| args.erase(args.begin()); |
| args.erase(args.begin()); |
| EXPECT_CALL(runner, |
| ip6(StrEq(object), StrEq(action), ElementsAreArray(args), _)); |
| } |
| |
| void Verify_iptables(MockProcessRunner& runner, |
| IpFamily family, |
| const std::string& command, |
| int call_count = 1) { |
| auto args = |
| base::SplitString(command, " ", base::WhitespaceHandling::TRIM_WHITESPACE, |
| base::SplitResult::SPLIT_WANT_NONEMPTY); |
| const auto table = args[0]; |
| args.erase(args.begin()); |
| if (family & IPv4) |
| EXPECT_CALL(runner, |
| iptables(StrEq(table), ElementsAreArray(args), _, nullptr)) |
| .Times(call_count); |
| if (family & IPv6) |
| EXPECT_CALL(runner, |
| ip6tables(StrEq(table), ElementsAreArray(args), _, nullptr)) |
| .Times(call_count); |
| } |
| |
| void Verify_sysctl_w(MockProcessRunner& runner, |
| const std::string& key, |
| const std::string& value) { |
| EXPECT_CALL(runner, sysctl_w(StrEq(key), StrEq(value), _)); |
| } |
| |
| void Verify_ip_netns_attach(MockProcessRunner& runner, |
| const std::string& netns_name, |
| pid_t pid) { |
| EXPECT_CALL(runner, ip_netns_attach(StrEq(netns_name), pid, _)); |
| } |
| |
| void Verify_ip_netns_delete(MockProcessRunner& runner, |
| const std::string& netns_name) { |
| EXPECT_CALL(runner, ip_netns_delete(StrEq(netns_name), _)); |
| } |
| |
| TEST(DatapathTest, IpFamily) { |
| EXPECT_EQ(Dual, IPv4 | IPv6); |
| EXPECT_EQ(Dual & IPv4, IPv4); |
| EXPECT_EQ(Dual & IPv6, IPv6); |
| EXPECT_NE(Dual, IPv4); |
| EXPECT_NE(Dual, IPv6); |
| EXPECT_NE(IPv4, IPv6); |
| } |
| |
| TEST(DatapathTest, Start) { |
| MockProcessRunner runner; |
| MockFirewall firewall; |
| |
| // Asserts for sysctl modifications |
| Verify_sysctl_w(runner, "net.ipv4.ip_forward", "1"); |
| Verify_sysctl_w(runner, "net.ipv4.ip_local_port_range", "32768 47103"); |
| Verify_sysctl_w(runner, "net.ipv6.conf.all.forwarding", "1"); |
| |
| std::vector<std::pair<IpFamily, std::string>> iptables_commands = { |
| // Asserts for iptables chain reset. |
| {IPv4, "filter -D OUTPUT -j drop_guest_ipv4_prefix -w"}, |
| {Dual, "filter -F FORWARD -w"}, |
| {Dual, "mangle -F FORWARD -w"}, |
| {Dual, "mangle -F INPUT -w"}, |
| {Dual, "mangle -F OUTPUT -w"}, |
| {Dual, "mangle -F POSTROUTING -w"}, |
| {Dual, "mangle -F PREROUTING -w"}, |
| {Dual, "mangle -L apply_local_source_mark -w"}, |
| {Dual, "mangle -F apply_local_source_mark -w"}, |
| {Dual, "mangle -X apply_local_source_mark -w"}, |
| {Dual, "mangle -L apply_vpn_mark -w"}, |
| {Dual, "mangle -F apply_vpn_mark -w"}, |
| {Dual, "mangle -X apply_vpn_mark -w"}, |
| {IPv4, "filter -L drop_guest_ipv4_prefix -w"}, |
| {IPv4, "filter -F drop_guest_ipv4_prefix -w"}, |
| {IPv4, "filter -X drop_guest_ipv4_prefix -w"}, |
| {IPv4, "nat -L redirect_dns -w"}, |
| {IPv4, "nat -F redirect_dns -w"}, |
| {IPv4, "nat -X redirect_dns -w"}, |
| {IPv4, "nat -F POSTROUTING -w"}, |
| {IPv4, "nat -F OUTPUT -w"}, |
| // Asserts for SNAT rules of traffic forwarded from downstream interfaces. |
| {IPv4, |
| "filter -A FORWARD -m mark --mark 0x00000001/0x00000001 -m state " |
| "--state INVALID -j DROP " |
| "-w"}, |
| {IPv4, |
| "nat -A POSTROUTING -m mark --mark 0x00000001/0x00000001 -j MASQUERADE " |
| "-w"}, |
| // Asserts for AddForwardEstablishedRule |
| {IPv4, |
| "filter -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT -w"}, |
| {IPv4, "filter -A FORWARD -i arc+ -j ACCEPT -w"}, |
| // Asserts for AddSourceIPv4DropRule() calls. |
| {IPv4, "filter -N drop_guest_ipv4_prefix -w"}, |
| {IPv4, "filter -I OUTPUT -j drop_guest_ipv4_prefix -w"}, |
| {IPv4, |
| "filter -I drop_guest_ipv4_prefix -o eth+ -s 100.115.92.0/23 -j DROP " |
| "-w"}, |
| {IPv4, |
| "filter -I drop_guest_ipv4_prefix -o wlan+ -s 100.115.92.0/23 -j DROP " |
| "-w"}, |
| {IPv4, |
| "filter -I drop_guest_ipv4_prefix -o mlan+ -s 100.115.92.0/23 -j DROP " |
| "-w"}, |
| {IPv4, |
| "filter -I drop_guest_ipv4_prefix -o usb+ -s 100.115.92.0/23 -j DROP " |
| "-w"}, |
| {IPv4, |
| "filter -I drop_guest_ipv4_prefix -o wwan+ -s 100.115.92.0/23 -j DROP " |
| "-w"}, |
| {IPv4, |
| "filter -I drop_guest_ipv4_prefix -o rmnet+ -s 100.115.92.0/23 -j DROP " |
| "-w"}, |
| // Asserts for OUTPUT ndp connmark bypass rule |
| {IPv6, |
| "mangle -I OUTPUT -p icmpv6 --icmpv6-type router-solicitation -j ACCEPT " |
| "-w"}, |
| {IPv6, |
| "mangle -I OUTPUT -p icmpv6 --icmpv6-type router-advertisement -j " |
| "ACCEPT -w"}, |
| {IPv6, |
| "mangle -I OUTPUT -p icmpv6 --icmpv6-type neighbour-solicitation -j " |
| "ACCEPT -w"}, |
| {IPv6, |
| "mangle -I OUTPUT -p icmpv6 --icmpv6-type neighbour-advertisement -j " |
| "ACCEPT -w"}, |
| // Asserts for OUTPUT CONNMARK restore rule |
| {Dual, |
| "mangle -A OUTPUT -j CONNMARK --restore-mark --mask 0xffff0000 -w"}, |
| // Asserts for apply_local_source_mark chain |
| {Dual, "mangle -N apply_local_source_mark -w"}, |
| {Dual, "mangle -A OUTPUT -j apply_local_source_mark -w"}, |
| {Dual, |
| "mangle -A apply_local_source_mark -m owner --uid-owner chronos -j MARK " |
| "--set-mark 0x00008100/0x0000ff00 -w"}, |
| {Dual, |
| "mangle -A apply_local_source_mark -m owner --uid-owner debugd -j MARK " |
| "--set-mark 0x00008200/0x0000ff00 -w"}, |
| {Dual, |
| "mangle -A apply_local_source_mark -m owner --uid-owner cups -j MARK " |
| "--set-mark 0x00008200/0x0000ff00 -w"}, |
| {Dual, |
| "mangle -A apply_local_source_mark -m owner --uid-owner lpadmin -j MARK " |
| "--set-mark 0x00008200/0x0000ff00 -w"}, |
| {Dual, |
| "mangle -A apply_local_source_mark -m owner --uid-owner kerberosd -j " |
| "MARK --set-mark 0x00008400/0x0000ff00 -w"}, |
| {Dual, |
| "mangle -A apply_local_source_mark -m owner --uid-owner kerberosd-exec " |
| "-j MARK --set-mark 0x00008400/0x0000ff00 -w"}, |
| {Dual, |
| "mangle -A apply_local_source_mark -m owner --uid-owner tlsdate -j MARK " |
| "--set-mark 0x00008400/0x0000ff00 -w"}, |
| {Dual, |
| "mangle -A apply_local_source_mark -m owner --uid-owner pluginvm -j " |
| "MARK --set-mark 0x00008200/0x0000ff00 -w"}, |
| {Dual, |
| "mangle -A apply_local_source_mark -m owner --uid-owner fuse-smbfs -j " |
| "MARK --set-mark 0x00008400/0x0000ff00 -w"}, |
| {Dual, |
| "mangle -A apply_local_source_mark -m cgroup --cgroup 0x00010001 -j " |
| "MARK --set-mark 0x00000300/0x0000ff00 -w"}, |
| {Dual, |
| "mangle -A apply_local_source_mark -m mark --mark 0x0/0x00003f00 -j " |
| "MARK --set-mark 0x00000400/0x00003f00 -w"}, |
| // Asserts for apply_vpn_mark chain |
| {Dual, "mangle -N apply_vpn_mark -w"}, |
| {Dual, |
| "mangle -A OUTPUT -m mark --mark 0x00008000/0x0000c000 -j " |
| "apply_vpn_mark -w"}, |
| // Asserts for redirect_dns chain creation |
| {IPv4, "nat -N redirect_dns -w"}, |
| }; |
| for (const auto& c : iptables_commands) { |
| Verify_iptables(runner, c.first, c.second); |
| } |
| |
| Datapath datapath(&runner, &firewall); |
| datapath.Start(); |
| } |
| |
| TEST(DatapathTest, Stop) { |
| MockProcessRunner runner; |
| MockFirewall firewall; |
| // Asserts for sysctl modifications |
| Verify_sysctl_w(runner, "net.ipv4.ip_local_port_range", "32768 61000"); |
| Verify_sysctl_w(runner, "net.ipv6.conf.all.forwarding", "0"); |
| Verify_sysctl_w(runner, "net.ipv4.ip_forward", "0"); |
| // Asserts for iptables chain reset. |
| std::vector<std::pair<IpFamily, std::string>> iptables_commands = { |
| {IPv4, "filter -D OUTPUT -j drop_guest_ipv4_prefix -w"}, |
| {Dual, "filter -F FORWARD -w"}, |
| {Dual, "mangle -F FORWARD -w"}, |
| {Dual, "mangle -F INPUT -w"}, |
| {Dual, "mangle -F OUTPUT -w"}, |
| {Dual, "mangle -F POSTROUTING -w"}, |
| {Dual, "mangle -F PREROUTING -w"}, |
| {Dual, "mangle -L apply_local_source_mark -w"}, |
| {Dual, "mangle -F apply_local_source_mark -w"}, |
| {Dual, "mangle -X apply_local_source_mark -w"}, |
| {Dual, "mangle -L apply_vpn_mark -w"}, |
| {Dual, "mangle -F apply_vpn_mark -w"}, |
| {Dual, "mangle -X apply_vpn_mark -w"}, |
| {IPv4, "filter -L drop_guest_ipv4_prefix -w"}, |
| {IPv4, "filter -F drop_guest_ipv4_prefix -w"}, |
| {IPv4, "filter -X drop_guest_ipv4_prefix -w"}, |
| {IPv4, "nat -L redirect_dns -w"}, |
| {IPv4, "nat -F redirect_dns -w"}, |
| {IPv4, "nat -X redirect_dns -w"}, |
| {IPv4, "nat -F POSTROUTING -w"}, |
| {IPv4, "nat -F OUTPUT -w"}, |
| }; |
| for (const auto& c : iptables_commands) { |
| Verify_iptables(runner, c.first, c.second); |
| } |
| |
| Datapath datapath(&runner, &firewall); |
| datapath.Stop(); |
| } |
| |
| TEST(DatapathTest, AddTAP) { |
| MockProcessRunner runner; |
| MockFirewall firewall; |
| Datapath datapath(&runner, &firewall, ioctl_req_cap); |
| MacAddress mac = {1, 2, 3, 4, 5, 6}; |
| Subnet subnet(Ipv4Addr(100, 115, 92, 4), 30, base::DoNothing()); |
| auto addr = subnet.AllocateAtOffset(0); |
| auto ifname = datapath.AddTAP("foo0", &mac, addr.get(), ""); |
| EXPECT_EQ(ifname, "foo0"); |
| std::vector<ioctl_req_t> expected = { |
| TUNSETIFF, TUNSETPERSIST, SIOCSIFADDR, SIOCSIFNETMASK, |
| SIOCSIFHWADDR, SIOCGIFFLAGS, SIOCSIFFLAGS}; |
| EXPECT_EQ(ioctl_reqs, expected); |
| ioctl_reqs.clear(); |
| ioctl_rtentry_args.clear(); |
| } |
| |
| TEST(DatapathTest, AddTAPWithOwner) { |
| MockProcessRunner runner; |
| MockFirewall firewall; |
| Datapath datapath(&runner, &firewall, ioctl_req_cap); |
| MacAddress mac = {1, 2, 3, 4, 5, 6}; |
| Subnet subnet(Ipv4Addr(100, 115, 92, 4), 30, base::DoNothing()); |
| auto addr = subnet.AllocateAtOffset(0); |
| auto ifname = datapath.AddTAP("foo0", &mac, addr.get(), "root"); |
| EXPECT_EQ(ifname, "foo0"); |
| std::vector<ioctl_req_t> expected = { |
| TUNSETIFF, TUNSETPERSIST, TUNSETOWNER, SIOCSIFADDR, |
| SIOCSIFNETMASK, SIOCSIFHWADDR, SIOCGIFFLAGS, SIOCSIFFLAGS}; |
| EXPECT_EQ(ioctl_reqs, expected); |
| ioctl_reqs.clear(); |
| ioctl_rtentry_args.clear(); |
| } |
| |
| TEST(DatapathTest, AddTAPNoAddrs) { |
| MockProcessRunner runner; |
| MockFirewall firewall; |
| Datapath datapath(&runner, &firewall, ioctl_req_cap); |
| auto ifname = datapath.AddTAP("foo0", nullptr, nullptr, ""); |
| EXPECT_EQ(ifname, "foo0"); |
| std::vector<ioctl_req_t> expected = {TUNSETIFF, TUNSETPERSIST, SIOCGIFFLAGS, |
| SIOCSIFFLAGS}; |
| EXPECT_EQ(ioctl_reqs, expected); |
| ioctl_reqs.clear(); |
| ioctl_rtentry_args.clear(); |
| } |
| |
| TEST(DatapathTest, RemoveTAP) { |
| MockProcessRunner runner; |
| MockFirewall firewall; |
| Verify_ip(runner, "tuntap del foo0 mode tap"); |
| Datapath datapath(&runner, &firewall); |
| datapath.RemoveTAP("foo0"); |
| } |
| |
| TEST(DatapathTest, NetnsAttachName) { |
| MockProcessRunner runner; |
| MockFirewall firewall; |
| Verify_ip_netns_delete(runner, "netns_foo"); |
| Verify_ip_netns_attach(runner, "netns_foo", 1234); |
| Datapath datapath(&runner, &firewall); |
| EXPECT_TRUE(datapath.NetnsAttachName("netns_foo", 1234)); |
| } |
| |
| TEST(DatapathTest, NetnsDeleteName) { |
| MockProcessRunner runner; |
| MockFirewall firewall; |
| EXPECT_CALL(runner, ip_netns_delete(StrEq("netns_foo"), true)); |
| Datapath datapath(&runner, &firewall); |
| EXPECT_TRUE(datapath.NetnsDeleteName("netns_foo")); |
| } |
| |
| TEST(DatapathTest, AddBridge) { |
| MockProcessRunner runner; |
| MockFirewall firewall; |
| Verify_ip(runner, "addr add 1.1.1.1/30 brd 1.1.1.3 dev br"); |
| Verify_ip(runner, "link set br up"); |
| |
| Datapath datapath(&runner, &firewall, (ioctl_t)ioctl_ifreq_cap); |
| datapath.AddBridge("br", Ipv4Addr(1, 1, 1, 1), 30); |
| |
| EXPECT_EQ(1, ioctl_reqs.size()); |
| EXPECT_EQ(SIOCBRADDBR, ioctl_reqs[0]); |
| EXPECT_EQ("br", ioctl_ifreq_args[0].first); |
| ioctl_reqs.clear(); |
| ioctl_ifreq_args.clear(); |
| } |
| |
| TEST(DatapathTest, RemoveBridge) { |
| MockProcessRunner runner; |
| MockFirewall firewall; |
| Verify_ip(runner, "link set br down"); |
| |
| Datapath datapath(&runner, &firewall, (ioctl_t)ioctl_ifreq_cap); |
| datapath.RemoveBridge("br"); |
| |
| EXPECT_EQ(1, ioctl_reqs.size()); |
| EXPECT_EQ(SIOCBRDELBR, ioctl_reqs[0]); |
| EXPECT_EQ("br", ioctl_ifreq_args[0].first); |
| ioctl_reqs.clear(); |
| ioctl_ifreq_args.clear(); |
| } |
| |
| TEST(DatapathTest, AddToBridge) { |
| MockProcessRunner runner; |
| MockFirewall firewall; |
| |
| Datapath datapath(&runner, &firewall, (ioctl_t)ioctl_ifreq_cap); |
| datapath.SetIfnameIndex("vethwlan0", 5); |
| datapath.AddToBridge("arcbr0", "vethwlan0"); |
| |
| EXPECT_EQ(1, ioctl_reqs.size()); |
| EXPECT_EQ(SIOCBRADDIF, ioctl_reqs[0]); |
| EXPECT_EQ("arcbr0", ioctl_ifreq_args[0].first); |
| EXPECT_EQ(5, ioctl_ifreq_args[0].second.ifr_ifindex); |
| |
| ioctl_reqs.clear(); |
| ioctl_ifreq_args.clear(); |
| } |
| |
| TEST(DatapathTest, ConnectVethPair) { |
| MockProcessRunner runner; |
| MockFirewall firewall; |
| Verify_ip(runner, |
| "link add veth_foo type veth peer name peer_foo netns netns_foo"); |
| Verify_ip(runner, |
| "addr add 100.115.92.169/30 brd 100.115.92.171 dev peer_foo"); |
| Verify_ip(runner, |
| "link set dev peer_foo up addr 01:02:03:04:05:06 multicast on"); |
| Verify_ip(runner, "link set veth_foo up"); |
| Datapath datapath(&runner, &firewall); |
| EXPECT_TRUE(datapath.ConnectVethPair(kTestPID, "netns_foo", "veth_foo", |
| "peer_foo", {1, 2, 3, 4, 5, 6}, |
| Ipv4Addr(100, 115, 92, 169), 30, true)); |
| } |
| |
| TEST(DatapathTest, AddVirtualInterfacePair) { |
| MockProcessRunner runner; |
| MockFirewall firewall; |
| Verify_ip(runner, |
| "link add veth_foo type veth peer name peer_foo netns netns_foo"); |
| Datapath datapath(&runner, &firewall); |
| EXPECT_TRUE( |
| datapath.AddVirtualInterfacePair("netns_foo", "veth_foo", "peer_foo")); |
| } |
| |
| TEST(DatapathTest, ToggleInterface) { |
| MockProcessRunner runner; |
| MockFirewall firewall; |
| Verify_ip(runner, "link set foo up"); |
| Verify_ip(runner, "link set bar down"); |
| Datapath datapath(&runner, &firewall); |
| EXPECT_TRUE(datapath.ToggleInterface("foo", true)); |
| EXPECT_TRUE(datapath.ToggleInterface("bar", false)); |
| } |
| |
| TEST(DatapathTest, ConfigureInterface) { |
| MockProcessRunner runner; |
| MockFirewall firewall; |
| Verify_ip(runner, "addr add 1.1.1.1/30 brd 1.1.1.3 dev foo"); |
| Verify_ip(runner, "link set dev foo up addr 02:02:02:02:02:02 multicast on"); |
| |
| Datapath datapath(&runner, &firewall); |
| MacAddress mac_addr = {2, 2, 2, 2, 2, 2}; |
| EXPECT_TRUE(datapath.ConfigureInterface("foo", mac_addr, Ipv4Addr(1, 1, 1, 1), |
| 30, true, true)); |
| } |
| |
| TEST(DatapathTest, RemoveInterface) { |
| MockProcessRunner runner; |
| MockFirewall firewall; |
| Verify_ip(runner, "link delete foo"); |
| Datapath datapath(&runner, &firewall); |
| datapath.RemoveInterface("foo"); |
| } |
| |
| TEST(DatapathTest, StartRoutingNamespace) { |
| MockProcessRunner runner; |
| MockFirewall firewall; |
| MacAddress mac = {1, 2, 3, 4, 5, 6}; |
| |
| Verify_ip_netns_delete(runner, "netns_foo"); |
| Verify_ip_netns_attach(runner, "netns_foo", kTestPID); |
| Verify_ip(runner, |
| "link add arc_ns0 type veth peer name veth0 netns netns_foo"); |
| Verify_ip(runner, "addr add 100.115.92.130/30 brd 100.115.92.131 dev veth0"); |
| Verify_ip(runner, |
| "link set dev veth0 up addr 01:02:03:04:05:06 multicast off"); |
| Verify_ip(runner, "link set arc_ns0 up"); |
| Verify_ip(runner, |
| "addr add 100.115.92.129/30 brd 100.115.92.131 dev arc_ns0"); |
| Verify_ip(runner, |
| "link set dev arc_ns0 up addr 01:02:03:04:05:06 multicast off"); |
| Verify_iptables(runner, IPv4, "filter -A FORWARD -o arc_ns0 -j ACCEPT -w"); |
| Verify_iptables(runner, IPv4, "filter -A FORWARD -i arc_ns0 -j ACCEPT -w"); |
| Verify_iptables(runner, Dual, "mangle -N PREROUTING_arc_ns0 -w"); |
| Verify_iptables(runner, Dual, "mangle -F PREROUTING_arc_ns0 -w"); |
| Verify_iptables(runner, Dual, |
| "mangle -A PREROUTING -i arc_ns0 -j PREROUTING_arc_ns0 -w"); |
| Verify_iptables(runner, IPv4, |
| "mangle -A PREROUTING_arc_ns0 -j MARK --set-mark " |
| "0x00000001/0x00000001 -w"); |
| Verify_iptables(runner, Dual, |
| "mangle -A PREROUTING_arc_ns0 -j MARK --set-mark " |
| "0x00000200/0x00003f00 -w"); |
| Verify_iptables(runner, Dual, |
| "mangle -A PREROUTING_arc_ns0 -j CONNMARK " |
| "--restore-mark --mask 0xffff0000 -w"); |
| Verify_iptables(runner, Dual, |
| "mangle -A PREROUTING_arc_ns0 -j apply_vpn_mark -w"); |
| |
| ConnectedNamespace nsinfo = {}; |
| nsinfo.pid = kTestPID; |
| nsinfo.netns_name = "netns_foo"; |
| nsinfo.source = TrafficSource::USER; |
| nsinfo.outbound_ifname = ""; |
| nsinfo.route_on_vpn = true; |
| nsinfo.host_ifname = "arc_ns0"; |
| nsinfo.peer_ifname = "veth0"; |
| nsinfo.peer_subnet = std::make_unique<Subnet>(Ipv4Addr(100, 115, 92, 128), 30, |
| base::DoNothing()); |
| nsinfo.peer_mac_addr = mac; |
| Datapath datapath(&runner, &firewall, (ioctl_t)ioctl_rtentry_cap); |
| datapath.StartRoutingNamespace(nsinfo); |
| ioctl_reqs.clear(); |
| ioctl_rtentry_args.clear(); |
| } |
| |
| TEST(DatapathTest, StopRoutingNamespace) { |
| MockProcessRunner runner; |
| MockFirewall firewall; |
| |
| Verify_iptables(runner, IPv4, "filter -D FORWARD -o arc_ns0 -j ACCEPT -w"); |
| Verify_iptables(runner, IPv4, "filter -D FORWARD -i arc_ns0 -j ACCEPT -w"); |
| Verify_iptables(runner, Dual, |
| "mangle -D PREROUTING -i arc_ns0 -j PREROUTING_arc_ns0 -w"); |
| Verify_iptables(runner, Dual, "mangle -F PREROUTING_arc_ns0 -w"); |
| Verify_iptables(runner, Dual, "mangle -X PREROUTING_arc_ns0 -w"); |
| Verify_ip_netns_delete(runner, "netns_foo"); |
| Verify_ip(runner, "link delete arc_ns0"); |
| |
| ConnectedNamespace nsinfo = {}; |
| nsinfo.pid = kTestPID; |
| nsinfo.netns_name = "netns_foo"; |
| nsinfo.source = TrafficSource::USER; |
| nsinfo.outbound_ifname = ""; |
| nsinfo.route_on_vpn = true; |
| nsinfo.host_ifname = "arc_ns0"; |
| nsinfo.peer_ifname = "veth0"; |
| nsinfo.peer_subnet = std::make_unique<Subnet>(Ipv4Addr(100, 115, 92, 128), 30, |
| base::DoNothing()); |
| Datapath datapath(&runner, &firewall); |
| datapath.StopRoutingNamespace(nsinfo); |
| } |
| |
| TEST(DatapathTest, StartRoutingDevice_Arc) { |
| MockProcessRunner runner; |
| MockFirewall firewall; |
| Verify_iptables( |
| runner, IPv4, |
| "nat -A PREROUTING -i eth0 -m socket --nowildcard -j ACCEPT -w"); |
| Verify_iptables( |
| runner, IPv4, |
| "nat -A PREROUTING -i eth0 -p tcp -j DNAT --to-destination 1.2.3.4 -w"); |
| Verify_iptables( |
| runner, IPv4, |
| "nat -A PREROUTING -i eth0 -p udp -j DNAT --to-destination 1.2.3.4 -w"); |
| Verify_iptables(runner, IPv4, |
| "filter -A FORWARD -i eth0 -o arc_eth0 -j ACCEPT -w"); |
| Verify_iptables(runner, IPv4, |
| "filter -A FORWARD -i arc_eth0 -o eth0 -j ACCEPT -w"); |
| Verify_iptables(runner, Dual, "mangle -N PREROUTING_arc_eth0 -w"); |
| Verify_iptables(runner, Dual, "mangle -F PREROUTING_arc_eth0 -w"); |
| Verify_iptables(runner, Dual, |
| "mangle -A PREROUTING -i arc_eth0 -j PREROUTING_arc_eth0 -w"); |
| Verify_iptables(runner, IPv4, |
| "mangle -A PREROUTING_arc_eth0 -j MARK --set-mark " |
| "0x00000001/0x00000001 -w"); |
| Verify_iptables(runner, Dual, |
| "mangle -A PREROUTING_arc_eth0 -j MARK --set-mark " |
| "0x00002000/0x00003f00 -w"); |
| Verify_iptables(runner, Dual, |
| "mangle -A PREROUTING_arc_eth0 -j MARK --set-mark " |
| "0x03ea0000/0xffff0000 -w"); |
| |
| Datapath datapath(&runner, &firewall); |
| datapath.SetIfnameIndex("eth0", 2); |
| datapath.StartRoutingDevice("eth0", "arc_eth0", Ipv4Addr(1, 2, 3, 4), |
| TrafficSource::ARC, false); |
| } |
| |
| TEST(DatapathTest, StartRoutingDevice_CrosVM) { |
| MockProcessRunner runner; |
| MockFirewall firewall; |
| Verify_iptables(runner, IPv4, "filter -A FORWARD -o vmtap0 -j ACCEPT -w"); |
| Verify_iptables(runner, IPv4, "filter -A FORWARD -i vmtap0 -j ACCEPT -w"); |
| Verify_iptables(runner, Dual, "mangle -N PREROUTING_vmtap0 -w"); |
| Verify_iptables(runner, Dual, "mangle -F PREROUTING_vmtap0 -w"); |
| Verify_iptables(runner, Dual, |
| "mangle -A PREROUTING -i vmtap0 -j PREROUTING_vmtap0 -w"); |
| Verify_iptables(runner, IPv4, |
| "mangle -A PREROUTING_vmtap0 -j MARK --set-mark " |
| "0x00000001/0x00000001 -w"); |
| Verify_iptables(runner, Dual, |
| "mangle -A PREROUTING_vmtap0 -j MARK --set-mark " |
| "0x00002100/0x00003f00 -w"); |
| Verify_iptables(runner, Dual, |
| "mangle -A PREROUTING_vmtap0 -j CONNMARK --restore-mark " |
| "--mask 0xffff0000 -w"); |
| Verify_iptables(runner, Dual, |
| "mangle -A PREROUTING_vmtap0 -j apply_vpn_mark -w"); |
| |
| Datapath datapath(&runner, &firewall); |
| datapath.StartRoutingDevice("", "vmtap0", Ipv4Addr(1, 2, 3, 4), |
| TrafficSource::CROSVM, true); |
| } |
| |
| TEST(DatapathTest, StopRoutingDevice_Arc) { |
| MockProcessRunner runner; |
| MockFirewall firewall; |
| Verify_iptables( |
| runner, IPv4, |
| "nat -D PREROUTING -i eth0 -m socket --nowildcard -j ACCEPT -w"); |
| Verify_iptables( |
| runner, IPv4, |
| "nat -D PREROUTING -i eth0 -p tcp -j DNAT --to-destination 1.2.3.4 -w"); |
| Verify_iptables( |
| runner, IPv4, |
| "nat -D PREROUTING -i eth0 -p udp -j DNAT --to-destination 1.2.3.4 -w"); |
| Verify_iptables(runner, IPv4, |
| "filter -D FORWARD -i eth0 -o arc_eth0 -j ACCEPT -w"); |
| Verify_iptables(runner, IPv4, |
| "filter -D FORWARD -i arc_eth0 -o eth0 -j ACCEPT -w"); |
| Verify_iptables(runner, Dual, |
| "mangle -D PREROUTING -i arc_eth0 -j PREROUTING_arc_eth0 -w"); |
| Verify_iptables(runner, Dual, "mangle -F PREROUTING_arc_eth0 -w"); |
| Verify_iptables(runner, Dual, "mangle -X PREROUTING_arc_eth0 -w"); |
| |
| Datapath datapath(&runner, &firewall); |
| datapath.StopRoutingDevice("eth0", "arc_eth0", Ipv4Addr(1, 2, 3, 4), |
| TrafficSource::ARC, true); |
| } |
| |
| TEST(DatapathTest, StopRoutingDevice_CrosVM) { |
| MockProcessRunner runner; |
| MockFirewall firewall; |
| Verify_iptables(runner, IPv4, "filter -D FORWARD -o vmtap0 -j ACCEPT -w"); |
| Verify_iptables(runner, IPv4, "filter -D FORWARD -i vmtap0 -j ACCEPT -w"); |
| Verify_iptables(runner, Dual, |
| "mangle -D PREROUTING -i vmtap0 -j PREROUTING_vmtap0 -w"); |
| Verify_iptables(runner, Dual, "mangle -F PREROUTING_vmtap0 -w"); |
| Verify_iptables(runner, Dual, "mangle -X PREROUTING_vmtap0 -w"); |
| |
| Datapath datapath(&runner, &firewall); |
| datapath.StopRoutingDevice("", "vmtap0", Ipv4Addr(1, 2, 3, 4), |
| TrafficSource::CROSVM, true); |
| } |
| |
| TEST(DatapathTest, StartStopConnectionPinning) { |
| MockProcessRunner runner; |
| MockFirewall firewall; |
| |
| // Setup |
| Verify_iptables(runner, Dual, "mangle -N POSTROUTING_eth0 -w"); |
| Verify_iptables(runner, Dual, "mangle -F POSTROUTING_eth0 -w", |
| 2 /* Start and Stop */); |
| Verify_iptables(runner, Dual, |
| "mangle -A POSTROUTING -o eth0 -j POSTROUTING_eth0 -w"); |
| Verify_iptables(runner, Dual, |
| "mangle -A POSTROUTING_eth0 -j CONNMARK --set-mark " |
| "0x03eb0000/0xffff0000 -w"); |
| Verify_iptables(runner, Dual, |
| "mangle -A POSTROUTING_eth0 -j CONNMARK " |
| "--save-mark --mask 0x00003f00 -w"); |
| Verify_iptables(runner, Dual, |
| "mangle -A PREROUTING -i eth0 -j CONNMARK " |
| "--restore-mark --mask 0x00003f00 -w"); |
| |
| // Teardown |
| Verify_iptables(runner, Dual, |
| "mangle -D POSTROUTING -o eth0 -j POSTROUTING_eth0 -w"); |
| Verify_iptables(runner, Dual, "mangle -X POSTROUTING_eth0 -w"); |
| Verify_iptables(runner, Dual, |
| "mangle -D PREROUTING -i eth0 -j CONNMARK " |
| "--restore-mark --mask 0x00003f00 -w"); |
| |
| Datapath datapath(&runner, &firewall); |
| datapath.SetIfnameIndex("eth0", 3); |
| datapath.StartConnectionPinning("eth0"); |
| datapath.StopConnectionPinning("eth0"); |
| } |
| |
| TEST(DatapathTest, StartStopVpnRouting_ArcVpn) { |
| MockProcessRunner runner; |
| MockFirewall firewall; |
| |
| // Setup |
| Verify_iptables(runner, Dual, "mangle -N POSTROUTING_arcbr0 -w"); |
| Verify_iptables(runner, Dual, "mangle -F POSTROUTING_arcbr0 -w", |
| 2 /* Start and Stop */); |
| Verify_iptables(runner, Dual, |
| "mangle -A POSTROUTING -o arcbr0 -j POSTROUTING_arcbr0 -w"); |
| Verify_iptables(runner, Dual, |
| "mangle -A POSTROUTING_arcbr0 -j CONNMARK " |
| "--set-mark 0x03ed0000/0xffff0000 -w"); |
| Verify_iptables( |
| runner, Dual, |
| "mangle -A apply_vpn_mark -m mark ! --mark 0x0/0xffff0000 -j ACCEPT -w"); |
| Verify_iptables( |
| runner, Dual, |
| "mangle -A apply_vpn_mark -j MARK --set-mark 0x03ed0000/0xffff0000 -w"); |
| Verify_iptables(runner, Dual, |
| "mangle -A POSTROUTING_arcbr0 -j CONNMARK " |
| "--save-mark --mask 0x00003f00 -w"); |
| Verify_iptables(runner, Dual, |
| "mangle -A PREROUTING -i arcbr0 -j CONNMARK " |
| "--restore-mark --mask 0x00003f00 -w"); |
| Verify_iptables(runner, IPv4, |
| "nat -A POSTROUTING -o arcbr0 -j MASQUERADE -w"); |
| Verify_iptables(runner, IPv4, |
| "nat -A OUTPUT -m mark ! --mark 0x00008000/0x0000c000 -j " |
| "redirect_dns -w"); |
| |
| // Teardown |
| Verify_iptables(runner, Dual, |
| "mangle -D POSTROUTING -o arcbr0 -j POSTROUTING_arcbr0 -w"); |
| Verify_iptables(runner, Dual, "mangle -X POSTROUTING_arcbr0 -w"); |
| Verify_iptables(runner, Dual, "mangle -F apply_vpn_mark -w"); |
| Verify_iptables(runner, Dual, |
| "mangle -D PREROUTING -i arcbr0 -j CONNMARK " |
| "--restore-mark --mask 0x00003f00 -w"); |
| Verify_iptables(runner, IPv4, |
| "nat -D POSTROUTING -o arcbr0 -j MASQUERADE -w"); |
| Verify_iptables(runner, IPv4, |
| "nat -D OUTPUT -m mark ! --mark 0x00008000/0x0000c000 -j " |
| "redirect_dns -w"); |
| |
| Datapath datapath(&runner, &firewall); |
| datapath.SetIfnameIndex("arcbr0", 5); |
| datapath.StartVpnRouting("arcbr0"); |
| datapath.StopVpnRouting("arcbr0"); |
| } |
| |
| TEST(DatapathTest, StartStopVpnRouting_HostVpn) { |
| MockProcessRunner runner; |
| MockFirewall firewall; |
| |
| // Setup |
| Verify_iptables(runner, Dual, "mangle -N POSTROUTING_tun0 -w"); |
| Verify_iptables(runner, Dual, "mangle -F POSTROUTING_tun0 -w", |
| 2 /* Start and Stop */); |
| Verify_iptables(runner, Dual, |
| "mangle -A POSTROUTING -o tun0 -j POSTROUTING_tun0 -w"); |
| Verify_iptables(runner, Dual, |
| "mangle -A POSTROUTING_tun0 -j CONNMARK --set-mark " |
| "0x03ed0000/0xffff0000 -w"); |
| Verify_iptables( |
| runner, Dual, |
| "mangle -A apply_vpn_mark -m mark ! --mark 0x0/0xffff0000 -j ACCEPT -w"); |
| Verify_iptables( |
| runner, Dual, |
| "mangle -A apply_vpn_mark -j MARK --set-mark 0x03ed0000/0xffff0000 -w"); |
| Verify_iptables(runner, Dual, |
| "mangle -A POSTROUTING_tun0 -j CONNMARK " |
| "--save-mark --mask 0x00003f00 -w"); |
| Verify_iptables(runner, Dual, |
| "mangle -A PREROUTING -i tun0 -j CONNMARK " |
| "--restore-mark --mask 0x00003f00 -w"); |
| Verify_iptables(runner, IPv4, "nat -A POSTROUTING -o tun0 -j MASQUERADE -w"); |
| Verify_iptables(runner, IPv4, |
| "nat -A OUTPUT -m mark ! --mark 0x00008000/0x0000c000 -j " |
| "redirect_dns -w"); |
| // Teardown |
| Verify_iptables(runner, Dual, |
| "mangle -D POSTROUTING -o tun0 -j POSTROUTING_tun0 -w"); |
| Verify_iptables(runner, Dual, "mangle -X POSTROUTING_tun0 -w"); |
| Verify_iptables(runner, Dual, "mangle -F apply_vpn_mark -w"); |
| Verify_iptables(runner, Dual, |
| "mangle -D PREROUTING -i tun0 -j CONNMARK " |
| "--restore-mark --mask 0x00003f00 -w"); |
| Verify_iptables(runner, IPv4, "nat -D POSTROUTING -o tun0 -j MASQUERADE -w"); |
| Verify_iptables(runner, IPv4, |
| "nat -D OUTPUT -m mark ! --mark 0x00008000/0x0000c000 -j " |
| "redirect_dns -w"); |
| // Start tun0 <-> arcbr0 routing |
| Verify_iptables(runner, IPv4, |
| "filter -A FORWARD -i tun0 -o arcbr0 -j ACCEPT -w"); |
| Verify_iptables(runner, IPv4, |
| "filter -A FORWARD -i arcbr0 -o tun0 -j ACCEPT -w"); |
| Verify_iptables(runner, Dual, "mangle -N PREROUTING_arcbr0 -w"); |
| Verify_iptables(runner, Dual, "mangle -F PREROUTING_arcbr0 -w", |
| 2 /* Start and Stop */); |
| Verify_iptables(runner, Dual, |
| "mangle -A PREROUTING -i arcbr0 -j PREROUTING_arcbr0 -w"); |
| Verify_iptables(runner, IPv4, |
| "mangle -A PREROUTING_arcbr0 -j MARK --set-mark " |
| "0x00000001/0x00000001 -w"); |
| Verify_iptables(runner, Dual, |
| "mangle -A PREROUTING_arcbr0 -j MARK --set-mark " |
| "0x00002000/0x00003f00 -w"); |
| Verify_iptables(runner, Dual, |
| "mangle -A PREROUTING_arcbr0 -j MARK --set-mark " |
| "0x03ed0000/0xffff0000 -w"); |
| // Stop tun0 <-> arcbr0 routing |
| Verify_iptables(runner, IPv4, |
| "filter -D FORWARD -i tun0 -o arcbr0 -j ACCEPT -w"); |
| Verify_iptables(runner, IPv4, |
| "filter -D FORWARD -i arcbr0 -o tun0 -j ACCEPT -w"); |
| Verify_iptables(runner, Dual, |
| "mangle -D PREROUTING -i arcbr0 -j PREROUTING_arcbr0 -w"); |
| Verify_iptables(runner, Dual, "mangle -X PREROUTING_arcbr0 -w"); |
| |
| Datapath datapath(&runner, &firewall); |
| datapath.SetIfnameIndex("tun0", 5); |
| datapath.StartVpnRouting("tun0"); |
| datapath.StopVpnRouting("tun0"); |
| } |
| |
| TEST(DatapathTest, AddInboundIPv4DNAT) { |
| MockProcessRunner runner; |
| MockFirewall firewall; |
| Verify_iptables( |
| runner, IPv4, |
| "nat -A PREROUTING -i eth0 -m socket --nowildcard -j ACCEPT -w"); |
| Verify_iptables( |
| runner, IPv4, |
| "nat -A PREROUTING -i eth0 -p tcp -j DNAT --to-destination 1.2.3.4 -w"); |
| Verify_iptables( |
| runner, IPv4, |
| "nat -A PREROUTING -i eth0 -p udp -j DNAT --to-destination 1.2.3.4 -w"); |
| |
| Datapath datapath(&runner, &firewall); |
| datapath.AddInboundIPv4DNAT("eth0", "1.2.3.4"); |
| } |
| |
| TEST(DatapathTest, RemoveInboundIPv4DNAT) { |
| MockProcessRunner runner; |
| MockFirewall firewall; |
| Verify_iptables( |
| runner, IPv4, |
| "nat -D PREROUTING -i eth0 -m socket --nowildcard -j ACCEPT -w"); |
| Verify_iptables( |
| runner, IPv4, |
| "nat -D PREROUTING -i eth0 -p tcp -j DNAT --to-destination 1.2.3.4 -w"); |
| Verify_iptables( |
| runner, IPv4, |
| "nat -D PREROUTING -i eth0 -p udp -j DNAT --to-destination 1.2.3.4 -w"); |
| |
| Datapath datapath(&runner, &firewall); |
| datapath.RemoveInboundIPv4DNAT("eth0", "1.2.3.4"); |
| } |
| |
| TEST(DatapathTest, MaskInterfaceFlags) { |
| MockProcessRunner runner; |
| MockFirewall firewall; |
| Datapath datapath(&runner, &firewall, ioctl_req_cap); |
| |
| bool result = datapath.MaskInterfaceFlags("foo0", IFF_DEBUG); |
| EXPECT_TRUE(result); |
| std::vector<ioctl_req_t> expected = {SIOCGIFFLAGS, SIOCSIFFLAGS}; |
| EXPECT_EQ(ioctl_reqs, expected); |
| ioctl_reqs.clear(); |
| ioctl_rtentry_args.clear(); |
| } |
| |
| TEST(DatapathTest, AddIPv6Forwarding) { |
| MockProcessRunner runner; |
| MockFirewall firewall; |
| // Return 1 on iptables -C to simulate rule not existing case |
| EXPECT_CALL(runner, ip6tables(StrEq("filter"), |
| ElementsAre("-C", "FORWARD", "-i", "eth0", "-o", |
| "arc_eth0", "-j", "ACCEPT", "-w"), |
| false, nullptr)) |
| .WillOnce(Return(1)); |
| EXPECT_CALL(runner, ip6tables(StrEq("filter"), |
| ElementsAre("-A", "FORWARD", "-i", "eth0", "-o", |
| "arc_eth0", "-j", "ACCEPT", "-w"), |
| true, nullptr)); |
| EXPECT_CALL(runner, ip6tables(StrEq("filter"), |
| ElementsAre("-C", "FORWARD", "-i", "arc_eth0", |
| "-o", "eth0", "-j", "ACCEPT", "-w"), |
| false, nullptr)) |
| .WillOnce(Return(1)); |
| EXPECT_CALL(runner, ip6tables(StrEq("filter"), |
| ElementsAre("-A", "FORWARD", "-i", "arc_eth0", |
| "-o", "eth0", "-j", "ACCEPT", "-w"), |
| true, nullptr)); |
| Datapath datapath(&runner, &firewall); |
| datapath.AddIPv6Forwarding("eth0", "arc_eth0"); |
| } |
| |
| TEST(DatapathTest, AddIPv6ForwardingRuleExists) { |
| MockProcessRunner runner; |
| MockFirewall firewall; |
| EXPECT_CALL(runner, ip6tables(StrEq("filter"), |
| ElementsAre("-C", "FORWARD", "-i", "eth0", "-o", |
| "arc_eth0", "-j", "ACCEPT", "-w"), |
| false, nullptr)); |
| EXPECT_CALL(runner, ip6tables(StrEq("filter"), |
| ElementsAre("-C", "FORWARD", "-i", "arc_eth0", |
| "-o", "eth0", "-j", "ACCEPT", "-w"), |
| false, nullptr)); |
| Datapath datapath(&runner, &firewall); |
| datapath.AddIPv6Forwarding("eth0", "arc_eth0"); |
| } |
| |
| TEST(DatapathTest, RemoveIPv6Forwarding) { |
| MockProcessRunner runner; |
| MockFirewall firewall; |
| Verify_iptables(runner, IPv6, |
| "filter -D FORWARD -i eth0 -o arc_eth0 -j ACCEPT -w"); |
| Verify_iptables(runner, IPv6, |
| "filter -D FORWARD -i arc_eth0 -o eth0 -j ACCEPT -w"); |
| Datapath datapath(&runner, &firewall); |
| datapath.RemoveIPv6Forwarding("eth0", "arc_eth0"); |
| } |
| |
| TEST(DatapathTest, AddIPv6HostRoute) { |
| MockProcessRunner runner; |
| MockFirewall firewall; |
| Verify_ip6(runner, "route replace 2001:da8:e00::1234/128 dev eth0"); |
| Datapath datapath(&runner, &firewall); |
| datapath.AddIPv6HostRoute("eth0", "2001:da8:e00::1234", 128); |
| } |
| |
| TEST(DatapathTest, AddIPv4Route) { |
| MockProcessRunner runner; |
| MockFirewall firewall; |
| Datapath datapath(&runner, &firewall, (ioctl_t)ioctl_rtentry_cap); |
| |
| datapath.AddIPv4Route(Ipv4Addr(192, 168, 1, 1), Ipv4Addr(100, 115, 93, 0), |
| Ipv4Addr(255, 255, 255, 0)); |
| datapath.DeleteIPv4Route(Ipv4Addr(192, 168, 1, 1), Ipv4Addr(100, 115, 93, 0), |
| Ipv4Addr(255, 255, 255, 0)); |
| datapath.AddIPv4Route("eth0", Ipv4Addr(100, 115, 92, 8), |
| Ipv4Addr(255, 255, 255, 252)); |
| datapath.DeleteIPv4Route("eth0", Ipv4Addr(100, 115, 92, 8), |
| Ipv4Addr(255, 255, 255, 252)); |
| |
| std::vector<ioctl_req_t> expected_reqs = {SIOCADDRT, SIOCDELRT, SIOCADDRT, |
| SIOCDELRT}; |
| EXPECT_EQ(expected_reqs, ioctl_reqs); |
| |
| std::string route1 = |
| "{rt_dst: {family: AF_INET, port: 0, addr: 100.115.93.0}, rt_genmask: " |
| "{family: AF_INET, port: 0, addr: 255.255.255.0}, rt_gateway: {family: " |
| "AF_INET, port: 0, addr: 192.168.1.1}, rt_dev: null, rt_flags: RTF_UP | " |
| "RTF_GATEWAY}"; |
| std::string route2 = |
| "{rt_dst: {family: AF_INET, port: 0, addr: 100.115.92.8}, rt_genmask: " |
| "{family: AF_INET, port: 0, addr: 255.255.255.252}, rt_gateway: {unset}, " |
| "rt_dev: eth0, rt_flags: RTF_UP | RTF_GATEWAY}"; |
| std::vector<std::string> captured_routes; |
| for (const auto& route : ioctl_rtentry_args) { |
| std::ostringstream stream; |
| stream << route.second; |
| captured_routes.emplace_back(stream.str()); |
| } |
| EXPECT_EQ(route1, captured_routes[0]); |
| EXPECT_EQ(route1, captured_routes[1]); |
| EXPECT_EQ(route2, captured_routes[2]); |
| EXPECT_EQ(route2, captured_routes[3]); |
| ioctl_reqs.clear(); |
| ioctl_rtentry_args.clear(); |
| } |
| |
| TEST(DatapathTest, RedirectDnsRules) { |
| MockProcessRunner runner; |
| MockFirewall firewall; |
| |
| Verify_iptables(runner, IPv4, |
| "nat -I redirect_dns -p tcp --dport 53 -o eth0 -j DNAT " |
| "--to-destination 192.168.1.1 -w"); |
| Verify_iptables(runner, IPv4, |
| "nat -I redirect_dns -p udp --dport 53 -o eth0 -j DNAT " |
| "--to-destination 192.168.1.1 -w"); |
| Verify_iptables(runner, IPv4, |
| "nat -I redirect_dns -p tcp --dport 53 -o wlan0 -j DNAT " |
| "--to-destination 1.1.1.1 -w"); |
| Verify_iptables(runner, IPv4, |
| "nat -I redirect_dns -p udp --dport 53 -o wlan0 -j DNAT " |
| "--to-destination 1.1.1.1 -w"); |
| Verify_iptables(runner, IPv4, |
| "nat -D redirect_dns -p tcp --dport 53 -o wlan0 -j DNAT " |
| "--to-destination 1.1.1.1 -w"); |
| Verify_iptables(runner, IPv4, |
| "nat -D redirect_dns -p udp --dport 53 -o wlan0 -j DNAT " |
| "--to-destination 1.1.1.1 -w"); |
| Verify_iptables(runner, IPv4, |
| "nat -I redirect_dns -p tcp --dport 53 -o wlan0 -j DNAT " |
| "--to-destination 8.8.8.8 -w"); |
| Verify_iptables(runner, IPv4, |
| "nat -I redirect_dns -p udp --dport 53 -o wlan0 -j DNAT " |
| "--to-destination 8.8.8.8 -w"); |
| Verify_iptables(runner, IPv4, |
| "nat -D redirect_dns -p tcp --dport 53 -o eth0 -j DNAT " |
| "--to-destination 192.168.1.1 -w"); |
| Verify_iptables(runner, IPv4, |
| "nat -D redirect_dns -p udp --dport 53 -o eth0 -j DNAT " |
| "--to-destination 192.168.1.1 -w"); |
| Verify_iptables(runner, IPv4, |
| "nat -D redirect_dns -p tcp --dport 53 -o wlan0 -j DNAT " |
| "--to-destination 8.8.8.8 -w"); |
| Verify_iptables(runner, IPv4, |
| "nat -D redirect_dns -p udp --dport 53 -o wlan0 -j DNAT " |
| "--to-destination 8.8.8.8 -w"); |
| |
| Datapath datapath(&runner, &firewall); |
| datapath.RemoveRedirectDnsRule("wlan0"); |
| datapath.RemoveRedirectDnsRule("unknown"); |
| datapath.AddRedirectDnsRule("eth0", "192.168.1.1"); |
| datapath.AddRedirectDnsRule("wlan0", "1.1.1.1"); |
| datapath.AddRedirectDnsRule("wlan0", "8.8.8.8"); |
| datapath.RemoveRedirectDnsRule("eth0"); |
| datapath.RemoveRedirectDnsRule("wlan0"); |
| } |
| |
| TEST(DatapathTest, ArcVethHostName) { |
| EXPECT_EQ("vetheth0", ArcVethHostName("eth0")); |
| EXPECT_EQ("vethrmnet0", ArcVethHostName("rmnet0")); |
| EXPECT_EQ("vethrmnet_data0", ArcVethHostName("rmnet_data0")); |
| EXPECT_EQ("vethifnamsiz_i0", ArcVethHostName("ifnamsiz_ifnam0")); |
| auto ifname = ArcVethHostName("exceeds_ifnamesiz_checkanyway"); |
| EXPECT_EQ("vethexceeds_ify", ifname); |
| EXPECT_LT(ifname.length(), IFNAMSIZ); |
| } |
| |
| TEST(DatapathTest, ArcBridgeName) { |
| EXPECT_EQ("arc_eth0", ArcBridgeName("eth0")); |
| EXPECT_EQ("arc_rmnet0", ArcBridgeName("rmnet0")); |
| EXPECT_EQ("arc_rmnet_data0", ArcBridgeName("rmnet_data0")); |
| EXPECT_EQ("arc_ifnamsiz_i0", ArcBridgeName("ifnamsiz_ifnam0")); |
| auto ifname = ArcBridgeName("exceeds_ifnamesiz_checkanyway"); |
| EXPECT_EQ("arc_exceeds_ify", ifname); |
| EXPECT_LT(ifname.length(), IFNAMSIZ); |
| } |
| |
| } // namespace patchpanel |
