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net: make protocol-specific WriteTo, WriteMsg methods return error instead of crash

Browse Source 
R=golang-dev, dave, rsc, adg, bradfitz
CC=golang-dev
https://golang.org/cl/11809043
This commit is contained in:
Mikio Hara 2013-08-18 19:19:36 +09:00
parent df7b93c175
commit 7917b88a06
5 changed files with 47 additions and 0 deletions
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6
src/pkg/net/iprawsock_posix.go
View File

@ -128,6 +128,9 @@ func (c *IPConn) WriteToIP(b []byte, addr *IPAddr) (int, error) {
if !c.ok() {
return 0, syscall.EINVAL
}
if addr == nil {
return 0, &OpError{Op: "write", Net: c.fd.net, Addr: nil, Err: errMissingAddress}
}
sa, err := addr.sockaddr(c.fd.family)
if err != nil {
return 0, &OpError{"write", c.fd.net, addr, err}
@ -154,6 +157,9 @@ func (c *IPConn) WriteMsgIP(b, oob []byte, addr *IPAddr) (n, oobn int, err error
if !c.ok() {
return 0, 0, syscall.EINVAL
}
if addr == nil {
return 0, 0, &OpError{Op: "write", Net: c.fd.net, Addr: nil, Err: errMissingAddress}
}
sa, err := addr.sockaddr(c.fd.family)
if err != nil {
return 0, 0, &OpError{"write", c.fd.net, addr, err}

29
src/pkg/net/protoconn_test.go
View File

@ -161,6 +161,15 @@ func TestUDPConnSpecificMethods(t *testing.T) {
} else {
f.Close()
}
defer func() {
if p := recover(); p != nil {
t.Fatalf("UDPConn.WriteToUDP or WriteMsgUDP panicked: %v", p)
}
}()
c.WriteToUDP(wb, nil)
c.WriteMsgUDP(wb, nil, nil)
}
func TestIPConnSpecificMethods(t *testing.T) {
@ -218,6 +227,15 @@ func TestIPConnSpecificMethods(t *testing.T) {
} else {
f.Close()
}
defer func() {
if p := recover(); p != nil {
t.Fatalf("IPConn.WriteToIP or WriteMsgIP panicked: %v", p)
}
}()
c.WriteToIP(wb, nil)
c.WriteMsgIP(wb, nil, nil)
}
func TestUnixListenerSpecificMethods(t *testing.T) {
@ -358,4 +376,15 @@ func TestUnixConnSpecificMethods(t *testing.T) {
} else {
f.Close()
}
defer func() {
if p := recover(); p != nil {
t.Fatalf("UnixConn.WriteToUnix or WriteMsgUnix panicked: %v", p)
}
}()
c1.WriteToUnix(wb, nil)
c1.WriteMsgUnix(wb, nil, nil)
c3.WriteToUnix(wb, nil)
c3.WriteMsgUnix(wb, nil, nil)
}

3
src/pkg/net/udpsock_plan9.go
View File

@ -73,6 +73,9 @@ func (c *UDPConn) WriteToUDP(b []byte, addr *UDPAddr) (int, error) {
if !c.ok() || c.fd.data == nil {
return 0, syscall.EINVAL
}
if addr == nil {
return 0, &OpError{Op: "write", Net: c.fd.dir, Addr: nil, Err: errMissingAddress}
}
h := new(udpHeader)
h.raddr = addr.IP.To16()
h.laddr = c.fd.laddr.(*UDPAddr).IP.To16()

6
src/pkg/net/udpsock_posix.go
View File

@ -124,6 +124,9 @@ func (c *UDPConn) WriteToUDP(b []byte, addr *UDPAddr) (int, error) {
if c.fd.isConnected {
return 0, &OpError{"write", c.fd.net, addr, ErrWriteToConnected}
}
if addr == nil {
return 0, &OpError{Op: "write", Net: c.fd.net, Addr: nil, Err: errMissingAddress}
}
sa, err := addr.sockaddr(c.fd.family)
if err != nil {
return 0, &OpError{"write", c.fd.net, addr, err}
@ -153,6 +156,9 @@ func (c *UDPConn) WriteMsgUDP(b, oob []byte, addr *UDPAddr) (n, oobn int, err er
if c.fd.isConnected {
return 0, 0, &OpError{"write", c.fd.net, addr, ErrWriteToConnected}
}
if addr == nil {
return 0, 0, &OpError{Op: "write", Net: c.fd.net, Addr: nil, Err: errMissingAddress}
}
sa, err := addr.sockaddr(c.fd.family)
if err != nil {
return 0, 0, &OpError{"write", c.fd.net, addr, err}

3
src/pkg/net/unixsock_posix.go
View File

@ -186,6 +186,9 @@ func (c *UnixConn) WriteToUnix(b []byte, addr *UnixAddr) (n int, err error) {
if !c.ok() {
return 0, syscall.EINVAL
}
if addr == nil {
return 0, &OpError{Op: "write", Net: c.fd.net, Addr: nil, Err: errMissingAddress}
}
if addr.Net != sotypeToNet(c.fd.sotype) {
return 0, syscall.EAFNOSUPPORT
}