blob: 5757e88d33d4c489fa1f071062719febd38eccc5 [file] [log] [blame]
// Copyright (c) 2019 The Chromium 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 "quiche/quic/qbone/platform/rtnetlink_message.h"
#include <net/if_arp.h>
#include "quiche/quic/platform/api/quic_ip_address.h"
#include "quiche/quic/platform/api/quic_test.h"
namespace quic {
namespace {
using ::testing::StrEq;
TEST(RtnetlinkMessageTest, LinkMessageCanBeCreatedForGetOperation) {
uint16_t flags = NLM_F_REQUEST | NLM_F_ROOT | NLM_F_MATCH;
uint32_t seq = 42;
uint32_t pid = 7;
auto message = LinkMessage::New(RtnetlinkMessage::Operation::GET, flags, seq,
pid, nullptr);
// No rtattr appended.
EXPECT_EQ(1, message.IoVecSize());
// nlmsghdr is built properly.
auto iov = message.BuildIoVec();
EXPECT_EQ(NLMSG_SPACE(sizeof(struct rtgenmsg)), iov[0].iov_len);
auto* netlink_message = reinterpret_cast<struct nlmsghdr*>(iov[0].iov_base);
EXPECT_EQ(NLMSG_LENGTH(sizeof(struct rtgenmsg)), netlink_message->nlmsg_len);
EXPECT_EQ(RTM_GETLINK, netlink_message->nlmsg_type);
EXPECT_EQ(flags, netlink_message->nlmsg_flags);
EXPECT_EQ(seq, netlink_message->nlmsg_seq);
EXPECT_EQ(pid, netlink_message->nlmsg_pid);
// We actually included rtgenmsg instead of the passed in ifinfomsg since this
// is a GET operation.
EXPECT_EQ(NLMSG_LENGTH(sizeof(struct rtgenmsg)), netlink_message->nlmsg_len);
}
TEST(RtnetlinkMessageTest, LinkMessageCanBeCreatedForNewOperation) {
struct ifinfomsg interface_info_header = {AF_INET, /* pad */ 0, ARPHRD_TUNNEL,
3, 0, 0xffffffff};
uint16_t flags = NLM_F_REQUEST | NLM_F_ROOT | NLM_F_MATCH;
uint32_t seq = 42;
uint32_t pid = 7;
auto message = LinkMessage::New(RtnetlinkMessage::Operation::NEW, flags, seq,
pid, &interface_info_header);
std::string device_name = "device0";
message.AppendAttribute(IFLA_IFNAME, device_name.c_str(), device_name.size());
// One rtattr appended.
EXPECT_EQ(2, message.IoVecSize());
// nlmsghdr is built properly.
auto iov = message.BuildIoVec();
EXPECT_EQ(NLMSG_ALIGN(NLMSG_LENGTH(sizeof(struct ifinfomsg))),
iov[0].iov_len);
auto* netlink_message = reinterpret_cast<struct nlmsghdr*>(iov[0].iov_base);
EXPECT_EQ(NLMSG_ALIGN(NLMSG_LENGTH(sizeof(struct ifinfomsg))) +
RTA_LENGTH(device_name.size()),
netlink_message->nlmsg_len);
EXPECT_EQ(RTM_NEWLINK, netlink_message->nlmsg_type);
EXPECT_EQ(flags, netlink_message->nlmsg_flags);
EXPECT_EQ(seq, netlink_message->nlmsg_seq);
EXPECT_EQ(pid, netlink_message->nlmsg_pid);
// ifinfomsg is included properly.
auto* parsed_header =
reinterpret_cast<struct ifinfomsg*>(NLMSG_DATA(netlink_message));
EXPECT_EQ(interface_info_header.ifi_family, parsed_header->ifi_family);
EXPECT_EQ(interface_info_header.ifi_type, parsed_header->ifi_type);
EXPECT_EQ(interface_info_header.ifi_index, parsed_header->ifi_index);
EXPECT_EQ(interface_info_header.ifi_flags, parsed_header->ifi_flags);
EXPECT_EQ(interface_info_header.ifi_change, parsed_header->ifi_change);
// rtattr is handled properly.
EXPECT_EQ(RTA_SPACE(device_name.size()), iov[1].iov_len);
auto* rta = reinterpret_cast<struct rtattr*>(iov[1].iov_base);
EXPECT_EQ(IFLA_IFNAME, rta->rta_type);
EXPECT_EQ(RTA_LENGTH(device_name.size()), rta->rta_len);
EXPECT_THAT(device_name,
StrEq(std::string(reinterpret_cast<char*>(RTA_DATA(rta)),
RTA_PAYLOAD(rta))));
}
TEST(RtnetlinkMessageTest, AddressMessageCanBeCreatedForGetOperation) {
uint16_t flags = NLM_F_REQUEST | NLM_F_ROOT | NLM_F_MATCH;
uint32_t seq = 42;
uint32_t pid = 7;
auto message = AddressMessage::New(RtnetlinkMessage::Operation::GET, flags,
seq, pid, nullptr);
// No rtattr appended.
EXPECT_EQ(1, message.IoVecSize());
// nlmsghdr is built properly.
auto iov = message.BuildIoVec();
EXPECT_EQ(NLMSG_SPACE(sizeof(struct rtgenmsg)), iov[0].iov_len);
auto* netlink_message = reinterpret_cast<struct nlmsghdr*>(iov[0].iov_base);
EXPECT_EQ(NLMSG_LENGTH(sizeof(struct rtgenmsg)), netlink_message->nlmsg_len);
EXPECT_EQ(RTM_GETADDR, netlink_message->nlmsg_type);
EXPECT_EQ(flags, netlink_message->nlmsg_flags);
EXPECT_EQ(seq, netlink_message->nlmsg_seq);
EXPECT_EQ(pid, netlink_message->nlmsg_pid);
// We actually included rtgenmsg instead of the passed in ifinfomsg since this
// is a GET operation.
EXPECT_EQ(NLMSG_LENGTH(sizeof(struct rtgenmsg)), netlink_message->nlmsg_len);
}
TEST(RtnetlinkMessageTest, AddressMessageCanBeCreatedForNewOperation) {
struct ifaddrmsg interface_address_header = {AF_INET,
/* prefixlen */ 24,
/* flags */ 0,
/* scope */ RT_SCOPE_LINK,
/* index */ 4};
uint16_t flags = NLM_F_REQUEST | NLM_F_ROOT | NLM_F_MATCH;
uint32_t seq = 42;
uint32_t pid = 7;
auto message = AddressMessage::New(RtnetlinkMessage::Operation::NEW, flags,
seq, pid, &interface_address_header);
QuicIpAddress ip;
QUICHE_CHECK(ip.FromString("10.0.100.3"));
message.AppendAttribute(IFA_ADDRESS, ip.ToPackedString().c_str(),
ip.ToPackedString().size());
// One rtattr is appended.
EXPECT_EQ(2, message.IoVecSize());
// nlmsghdr is built properly.
auto iov = message.BuildIoVec();
EXPECT_EQ(NLMSG_ALIGN(NLMSG_LENGTH(sizeof(struct ifaddrmsg))),
iov[0].iov_len);
auto* netlink_message = reinterpret_cast<struct nlmsghdr*>(iov[0].iov_base);
EXPECT_EQ(NLMSG_ALIGN(NLMSG_LENGTH(sizeof(struct ifaddrmsg))) +
RTA_LENGTH(ip.ToPackedString().size()),
netlink_message->nlmsg_len);
EXPECT_EQ(RTM_NEWADDR, netlink_message->nlmsg_type);
EXPECT_EQ(flags, netlink_message->nlmsg_flags);
EXPECT_EQ(seq, netlink_message->nlmsg_seq);
EXPECT_EQ(pid, netlink_message->nlmsg_pid);
// ifaddrmsg is included properly.
auto* parsed_header =
reinterpret_cast<struct ifaddrmsg*>(NLMSG_DATA(netlink_message));
EXPECT_EQ(interface_address_header.ifa_family, parsed_header->ifa_family);
EXPECT_EQ(interface_address_header.ifa_prefixlen,
parsed_header->ifa_prefixlen);
EXPECT_EQ(interface_address_header.ifa_flags, parsed_header->ifa_flags);
EXPECT_EQ(interface_address_header.ifa_scope, parsed_header->ifa_scope);
EXPECT_EQ(interface_address_header.ifa_index, parsed_header->ifa_index);
// rtattr is handled properly.
EXPECT_EQ(RTA_SPACE(ip.ToPackedString().size()), iov[1].iov_len);
auto* rta = reinterpret_cast<struct rtattr*>(iov[1].iov_base);
EXPECT_EQ(IFA_ADDRESS, rta->rta_type);
EXPECT_EQ(RTA_LENGTH(ip.ToPackedString().size()), rta->rta_len);
EXPECT_THAT(ip.ToPackedString(),
StrEq(std::string(reinterpret_cast<char*>(RTA_DATA(rta)),
RTA_PAYLOAD(rta))));
}
TEST(RtnetlinkMessageTest, RouteMessageCanBeCreatedFromNewOperation) {
struct rtmsg route_message_header = {AF_INET6,
/* rtm_dst_len */ 48,
/* rtm_src_len */ 0,
/* rtm_tos */ 0,
/* rtm_table */ RT_TABLE_MAIN,
/* rtm_protocol */ RTPROT_STATIC,
/* rtm_scope */ RT_SCOPE_LINK,
/* rtm_type */ RTN_LOCAL,
/* rtm_flags */ 0};
uint16_t flags = NLM_F_REQUEST | NLM_F_ROOT | NLM_F_MATCH;
uint32_t seq = 42;
uint32_t pid = 7;
auto message = RouteMessage::New(RtnetlinkMessage::Operation::NEW, flags, seq,
pid, &route_message_header);
QuicIpAddress preferred_source;
QUICHE_CHECK(preferred_source.FromString("ff80::1"));
message.AppendAttribute(RTA_PREFSRC,
preferred_source.ToPackedString().c_str(),
preferred_source.ToPackedString().size());
// One rtattr is appended.
EXPECT_EQ(2, message.IoVecSize());
// nlmsghdr is built properly
auto iov = message.BuildIoVec();
EXPECT_EQ(NLMSG_ALIGN(NLMSG_LENGTH(sizeof(struct rtmsg))), iov[0].iov_len);
auto* netlink_message = reinterpret_cast<struct nlmsghdr*>(iov[0].iov_base);
EXPECT_EQ(NLMSG_ALIGN(NLMSG_LENGTH(sizeof(struct rtmsg))) +
RTA_LENGTH(preferred_source.ToPackedString().size()),
netlink_message->nlmsg_len);
EXPECT_EQ(RTM_NEWROUTE, netlink_message->nlmsg_type);
EXPECT_EQ(flags, netlink_message->nlmsg_flags);
EXPECT_EQ(seq, netlink_message->nlmsg_seq);
EXPECT_EQ(pid, netlink_message->nlmsg_pid);
// rtmsg is included properly.
auto* parsed_header =
reinterpret_cast<struct rtmsg*>(NLMSG_DATA(netlink_message));
EXPECT_EQ(route_message_header.rtm_family, parsed_header->rtm_family);
EXPECT_EQ(route_message_header.rtm_dst_len, parsed_header->rtm_dst_len);
EXPECT_EQ(route_message_header.rtm_src_len, parsed_header->rtm_src_len);
EXPECT_EQ(route_message_header.rtm_tos, parsed_header->rtm_tos);
EXPECT_EQ(route_message_header.rtm_table, parsed_header->rtm_table);
EXPECT_EQ(route_message_header.rtm_protocol, parsed_header->rtm_protocol);
EXPECT_EQ(route_message_header.rtm_scope, parsed_header->rtm_scope);
EXPECT_EQ(route_message_header.rtm_type, parsed_header->rtm_type);
EXPECT_EQ(route_message_header.rtm_flags, parsed_header->rtm_flags);
// rtattr is handled properly.
EXPECT_EQ(RTA_SPACE(preferred_source.ToPackedString().size()),
iov[1].iov_len);
auto* rta = reinterpret_cast<struct rtattr*>(iov[1].iov_base);
EXPECT_EQ(RTA_PREFSRC, rta->rta_type);
EXPECT_EQ(RTA_LENGTH(preferred_source.ToPackedString().size()), rta->rta_len);
EXPECT_THAT(preferred_source.ToPackedString(),
StrEq(std::string(reinterpret_cast<char*>(RTA_DATA(rta)),
RTA_PAYLOAD(rta))));
}
} // namespace
} // namespace quic