Add unit tests
This commit is contained in:
Mayuresh Gaitonde
252
vendor/github.com/osrg/gobgp/pkg/server/sockopt_linux.go
generated
vendored
252
vendor/github.com/osrg/gobgp/pkg/server/sockopt_linux.go
generated
vendored
@@ -17,7 +17,6 @@
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package server
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import (
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"fmt"
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"net"
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"os"
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"syscall"
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@@ -25,8 +24,8 @@ import (
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)
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const (
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TCP_MD5SIG = 14 // TCP MD5 Signature (RFC2385)
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IPV6_MINHOPCOUNT = 73 // Generalized TTL Security Mechanism (RFC5082)
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tcpMD5SIG = 14 // TCP MD5 Signature (RFC2385)
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ipv6MinHopCount = 73 // Generalized TTL Security Mechanism (RFC5082)
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)
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type tcpmd5sig struct {
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@@ -40,7 +39,7 @@ type tcpmd5sig struct {
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key [80]byte
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}
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func buildTcpMD5Sig(address string, key string) (tcpmd5sig, error) {
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func buildTcpMD5Sig(address, key string) (tcpmd5sig, error) {
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t := tcpmd5sig{}
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addr := net.ParseIP(address)
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if addr.To4() != nil {
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@@ -57,7 +56,7 @@ func buildTcpMD5Sig(address string, key string) (tcpmd5sig, error) {
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return t, nil
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}
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func SetTcpMD5SigSockopt(l *net.TCPListener, address string, key string) error {
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func setTCPMD5SigSockopt(l *net.TCPListener, address string, key string) error {
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t, err := buildTcpMD5Sig(address, key)
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if err != nil {
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return err
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@@ -68,10 +67,10 @@ func SetTcpMD5SigSockopt(l *net.TCPListener, address string, key string) error {
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if err != nil {
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return err
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}
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return setsockOptString(sc, syscall.IPPROTO_TCP, TCP_MD5SIG, string(b[:]))
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return setsockOptString(sc, syscall.IPPROTO_TCP, tcpMD5SIG, string(b[:]))
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}
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func SetListenTcpTTLSockopt(l *net.TCPListener, ttl int) error {
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func setListenTCPTTLSockopt(l *net.TCPListener, ttl int) error {
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family := extractFamilyFromTCPListener(l)
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sc, err := l.SyscallConn()
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if err != nil {
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@@ -80,7 +79,7 @@ func SetListenTcpTTLSockopt(l *net.TCPListener, ttl int) error {
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return setsockoptIpTtl(sc, family, ttl)
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}
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func SetTcpTTLSockopt(conn *net.TCPConn, ttl int) error {
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func setTCPTTLSockopt(conn *net.TCPConn, ttl int) error {
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family := extractFamilyFromTCPConn(conn)
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sc, err := conn.SyscallConn()
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if err != nil {
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@@ -89,7 +88,7 @@ func SetTcpTTLSockopt(conn *net.TCPConn, ttl int) error {
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return setsockoptIpTtl(sc, family, ttl)
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}
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func SetTcpMinTTLSockopt(conn *net.TCPConn, ttl int) error {
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func setTCPMinTTLSockopt(conn *net.TCPConn, ttl int) error {
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family := extractFamilyFromTCPConn(conn)
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sc, err := conn.SyscallConn()
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if err != nil {
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@@ -99,191 +98,78 @@ func SetTcpMinTTLSockopt(conn *net.TCPConn, ttl int) error {
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name := syscall.IP_MINTTL
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if family == syscall.AF_INET6 {
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level = syscall.IPPROTO_IPV6
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name = IPV6_MINHOPCOUNT
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name = ipv6MinHopCount
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}
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return setsockOptInt(sc, level, name, ttl)
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}
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func setsockoptTcpMD5Sig(fd int, address string, key string) error {
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t, err := buildTcpMD5Sig(address, key)
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if err != nil {
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return err
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}
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b := *(*[unsafe.Sizeof(t)]byte)(unsafe.Pointer(&t))
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return os.NewSyscallError("setsockopt", syscall.SetsockoptString(fd, syscall.IPPROTO_TCP, TCP_MD5SIG, string(b[:])))
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}
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func setsockoptIpTtl2(fd int, family int, value int) error {
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level := syscall.IPPROTO_IP
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name := syscall.IP_TTL
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if family == syscall.AF_INET6 {
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level = syscall.IPPROTO_IPV6
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name = syscall.IPV6_UNICAST_HOPS
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}
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return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd, level, name, value))
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}
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func setsockoptIpMinTtl(fd int, family int, value int) error {
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level := syscall.IPPROTO_IP
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name := syscall.IP_MINTTL
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if family == syscall.AF_INET6 {
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level = syscall.IPPROTO_IPV6
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name = IPV6_MINHOPCOUNT
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}
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return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd, level, name, value))
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}
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type TCPDialer struct {
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net.Dialer
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// MD5 authentication password.
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AuthPassword string
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// The TTL value to set outgoing connection.
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Ttl uint8
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// The minimum TTL value for incoming packets.
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TtlMin uint8
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}
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func (d *TCPDialer) DialTCP(addr string, port int) (*net.TCPConn, error) {
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var family int
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var ra, la syscall.Sockaddr
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raddr, err := net.ResolveTCPAddr("tcp", net.JoinHostPort(addr, fmt.Sprintf("%d", port)))
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if err != nil {
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return nil, fmt.Errorf("invalid remote address: %s", err)
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}
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laddr, err := net.ResolveTCPAddr("tcp", d.LocalAddr.String())
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if err != nil {
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return nil, fmt.Errorf("invalid local address: %s", err)
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}
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if raddr.IP.To4() != nil {
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family = syscall.AF_INET
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rsockaddr := &syscall.SockaddrInet4{Port: port}
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copy(rsockaddr.Addr[:], raddr.IP.To4())
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ra = rsockaddr
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lsockaddr := &syscall.SockaddrInet4{}
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copy(lsockaddr.Addr[:], laddr.IP.To4())
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la = lsockaddr
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} else {
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func dialerControl(network, address string, c syscall.RawConn, ttl, minTtl uint8, password string, bindInterface string) error {
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family := syscall.AF_INET
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raddr, _ := net.ResolveTCPAddr("tcp", address)
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if raddr.IP.To4() == nil {
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family = syscall.AF_INET6
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rsockaddr := &syscall.SockaddrInet6{Port: port}
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copy(rsockaddr.Addr[:], raddr.IP.To16())
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ra = rsockaddr
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var zone uint32
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if laddr.Zone != "" {
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if intf, err := net.InterfaceByName(laddr.Zone); err != nil {
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return nil, err
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} else {
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zone = uint32(intf.Index)
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}
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var sockerr error
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if password != "" {
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addr, _, _ := net.SplitHostPort(address)
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t, err := buildTcpMD5Sig(addr, password)
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if err != nil {
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return err
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}
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b := *(*[unsafe.Sizeof(t)]byte)(unsafe.Pointer(&t))
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if err := c.Control(func(fd uintptr) {
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sockerr = os.NewSyscallError("setsockopt", syscall.SetsockoptString(int(fd), syscall.IPPROTO_TCP, tcpMD5SIG, string(b[:])))
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}); err != nil {
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return err
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}
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if sockerr != nil {
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return sockerr
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}
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}
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if ttl != 0 {
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if err := c.Control(func(fd uintptr) {
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level := syscall.IPPROTO_IP
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name := syscall.IP_TTL
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if family == syscall.AF_INET6 {
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level = syscall.IPPROTO_IPV6
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name = syscall.IPV6_UNICAST_HOPS
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}
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sockerr = os.NewSyscallError("setsockopt", syscall.SetsockoptInt(int(fd), level, name, int(ttl)))
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}); err != nil {
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return err
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}
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lsockaddr := &syscall.SockaddrInet6{ZoneId: zone}
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copy(lsockaddr.Addr[:], laddr.IP.To16())
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la = lsockaddr
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}
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sockType := syscall.SOCK_STREAM | syscall.SOCK_CLOEXEC | syscall.SOCK_NONBLOCK
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proto := 0
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fd, err := syscall.Socket(family, sockType, proto)
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if err != nil {
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return nil, err
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}
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fi := os.NewFile(uintptr(fd), "")
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defer fi.Close()
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// A new socket was created so we must close it before this
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// function returns either on failure or success. On success,
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// net.FileConn() in newTCPConn() increases the refcount of
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// the socket so this fi.Close() doesn't destroy the socket.
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// The caller must call Close() with the file later.
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// Note that the above os.NewFile() doesn't play with the
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// refcount.
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if err = syscall.SetsockoptInt(fd, syscall.SOL_SOCKET, syscall.SO_BROADCAST, 1); err != nil {
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return nil, os.NewSyscallError("setsockopt", err)
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}
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if err = syscall.SetsockoptInt(fd, syscall.IPPROTO_TCP, syscall.TCP_NODELAY, 1); err != nil {
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return nil, os.NewSyscallError("setsockopt", err)
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}
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if d.AuthPassword != "" {
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if err = setsockoptTcpMD5Sig(fd, addr, d.AuthPassword); err != nil {
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return nil, err
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if sockerr != nil {
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return sockerr
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}
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}
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if d.Ttl != 0 {
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if err = setsockoptIpTtl2(fd, family, int(d.Ttl)); err != nil {
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return nil, err
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}
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}
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if d.TtlMin != 0 {
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if err = setsockoptIpMinTtl(fd, family, int(d.Ttl)); err != nil {
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return nil, err
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}
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}
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if err = syscall.Bind(fd, la); err != nil {
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return nil, os.NewSyscallError("bind", err)
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}
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newTCPConn := func(fi *os.File) (*net.TCPConn, error) {
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if conn, err := net.FileConn(fi); err != nil {
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return nil, err
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} else {
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return conn.(*net.TCPConn), err
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}
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}
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err = syscall.Connect(fd, ra)
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switch err {
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case syscall.EINPROGRESS, syscall.EALREADY, syscall.EINTR:
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// do timeout handling
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case nil, syscall.EISCONN:
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return newTCPConn(fi)
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default:
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return nil, os.NewSyscallError("connect", err)
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}
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epfd, e := syscall.EpollCreate1(syscall.EPOLL_CLOEXEC)
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if e != nil {
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return nil, e
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}
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defer syscall.Close(epfd)
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var event syscall.EpollEvent
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events := make([]syscall.EpollEvent, 1)
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event.Events = syscall.EPOLLIN | syscall.EPOLLOUT | syscall.EPOLLPRI
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event.Fd = int32(fd)
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if e = syscall.EpollCtl(epfd, syscall.EPOLL_CTL_ADD, fd, &event); e != nil {
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return nil, e
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}
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for {
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nevents, e := syscall.EpollWait(epfd, events, int(d.Timeout/1000000) /*msec*/)
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if e != nil {
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return nil, e
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}
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if nevents == 0 {
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return nil, fmt.Errorf("timeout")
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} else if nevents == 1 && events[0].Fd == int32(fd) {
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nerr, err := syscall.GetsockoptInt(fd, syscall.SOL_SOCKET, syscall.SO_ERROR)
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if err != nil {
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return nil, os.NewSyscallError("getsockopt", err)
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if minTtl != 0 {
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if err := c.Control(func(fd uintptr) {
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level := syscall.IPPROTO_IP
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name := syscall.IP_MINTTL
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if family == syscall.AF_INET6 {
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level = syscall.IPPROTO_IPV6
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name = ipv6MinHopCount
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}
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switch err := syscall.Errno(nerr); err {
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case syscall.EINPROGRESS, syscall.EALREADY, syscall.EINTR:
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case syscall.Errno(0), syscall.EISCONN:
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return newTCPConn(fi)
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default:
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return nil, os.NewSyscallError("getsockopt", err)
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}
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} else {
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return nil, fmt.Errorf("unexpected epoll behavior")
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sockerr = os.NewSyscallError("setsockopt", syscall.SetsockoptInt(int(fd), level, name, int(minTtl)))
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}); err != nil {
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return err
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}
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if sockerr != nil {
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return sockerr
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}
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}
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if bindInterface != "" {
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if err := c.Control(func(fd uintptr) {
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sockerr = os.NewSyscallError("setsockopt", syscall.SetsockoptString(int(fd), syscall.SOL_SOCKET, syscall.SO_BINDTODEVICE, bindInterface))
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}); err != nil {
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return err
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}
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if sockerr != nil {
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return sockerr
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}
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}
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return nil
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}
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