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riscv-gcc-1
Commit 447fb74d by Ian Lance Taylor
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exp: remove exp/proxy and exp/terminal packages 

    
    The exp/proxy package was removed from the master library in
    https://golang.org/cl/6461056 (August, 2012).
    
    The exp/terminal package was removed from the master library in
    https://golang.org/cl/5970044 (March, 2012).
    
    I'm not sure why they lingered in the gofrontend copy, but let's
    finally remove them now.
    
    Reviewed-on: https://go-review.googlesource.com/87138

From-SVN: r256435
parent 227e5798
Showing with 31 additions and 872 deletions
gcc/go/gofrontend/MERGE
87df767807acac466edb3bb6445ad83a48141d17
4b8036b3f995cdb0b99a9fa26c2af1e2420b4fa2
The first line of this file holds the git revision number of the last
merge done from the gofrontend repository.
libgo/Makefile.am
......@@ -235,12 +235,6 @@ toolexeclibgoencoding_DATA = \
encoding/pem.gox \
encoding/xml.gox
toolexeclibgoexpdir = $(toolexeclibgodir)/exp
toolexeclibgoexp_DATA = \
exp/proxy.gox \
exp/terminal.gox
toolexeclibgogodir = $(toolexeclibgodir)/go
toolexeclibgogo_DATA = \
......@@ -759,8 +753,6 @@ PACKAGES = \
encoding/pem \
encoding/xml \
errors \
exp/proxy \
exp/terminal \
expvar \
flag \
fmt \
......@@ -1066,7 +1058,6 @@ CHECK_DEPS = \
$(toolexeclibgocrypto_DATA) \
$(toolexeclibgodebug_DATA) \
$(toolexeclibgoencoding_DATA) \
$(toolexeclibgoexp_DATA) \
$(toolexeclibgogo_DATA) \
$(toolexeclibgohash_DATA) \
$(toolexeclibgoimage_DATA) \
......@@ -1352,8 +1343,6 @@ TEST_PACKAGES = \
encoding/json/check \
encoding/pem/check \
encoding/xml/check \
exp/proxy/check \
exp/terminal/check \
html/template/check \
go/ast/check \
go/build/check \
......
libgo/go/exp/README deleted 100644 → 0
This directory tree contains experimental packages and
unfinished code that is subject to even more change than the
rest of the Go tree.
libgo/go/exp/proxy/direct.go deleted 100644 → 0
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package proxy
import (
"net"
)
type direct struct{}
// Direct is a direct proxy: one that makes network connections directly.
var Direct = direct{}
func (direct) Dial(network, addr string) (net.Conn, error) {
return net.Dial(network, addr)
}
libgo/go/exp/proxy/per_host.go deleted 100644 → 0
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package proxy
import (
"net"
"strings"
)
// A PerHost directs connections to a default Dailer unless the hostname
// requested matches one of a number of exceptions.
type PerHost struct {
def, bypass Dialer
bypassNetworks []*net.IPNet
bypassIPs []net.IP
bypassZones []string
bypassHosts []string
}
// NewPerHost returns a PerHost Dialer that directs connections to either
// defaultDialer or bypass, depending on whether the connection matches one of
// the configured rules.
func NewPerHost(defaultDialer, bypass Dialer) *PerHost {
return &PerHost{
def: defaultDialer,
bypass: bypass,
}
}
// Dial connects to the address addr on the network net through either
// defaultDialer or bypass.
func (p *PerHost) Dial(network, addr string) (c net.Conn, err error) {
host, _, err := net.SplitHostPort(addr)
if err != nil {
return nil, err
}
return p.dialerForRequest(host).Dial(network, addr)
}
func (p *PerHost) dialerForRequest(host string) Dialer {
if ip := net.ParseIP(host); ip != nil {
for _, net := range p.bypassNetworks {
if net.Contains(ip) {
return p.bypass
}
}
for _, bypassIP := range p.bypassIPs {
if bypassIP.Equal(ip) {
return p.bypass
}
}
return p.def
}
for _, zone := range p.bypassZones {
if strings.HasSuffix(host, zone) {
return p.bypass
}
if host == zone[1:] {
// For a zone "example.com", we match "example.com"
// too.
return p.bypass
}
}
for _, bypassHost := range p.bypassHosts {
if bypassHost == host {
return p.bypass
}
}
return p.def
}
// AddFromString parses a string that contains comma-separated values
// specifying hosts that should use the bypass proxy. Each value is either an
// IP address, a CIDR range, a zone (*.example.com) or a hostname
// (localhost). A best effort is made to parse the string and errors are
// ignored.
func (p *PerHost) AddFromString(s string) {
hosts := strings.Split(s, ",")
for _, host := range hosts {
host = strings.TrimSpace(host)
if len(host) == 0 {
continue
}
if strings.Contains(host, "/") {
// We assume that it's a CIDR address like 127.0.0.0/8
if _, net, err := net.ParseCIDR(host); err == nil {
p.AddNetwork(net)
}
continue
}
if ip := net.ParseIP(host); ip != nil {
p.AddIP(ip)
continue
}
if strings.HasPrefix(host, "*.") {
p.AddZone(host[1:])
continue
}
p.AddHost(host)
}
}
// AddIP specifies an IP address that will use the bypass proxy. Note that
// this will only take effect if a literal IP address is dialed. A connection
// to a named host will never match an IP.
func (p *PerHost) AddIP(ip net.IP) {
p.bypassIPs = append(p.bypassIPs, ip)
}
// AddIP specifies an IP range that will use the bypass proxy. Note that this
// will only take effect if a literal IP address is dialed. A connection to a
// named host will never match.
func (p *PerHost) AddNetwork(net *net.IPNet) {
p.bypassNetworks = append(p.bypassNetworks, net)
}
// AddZone specifies a DNS suffix that will use the bypass proxy. A zone of
// "example.com" matches "example.com" and all of its subdomains.
func (p *PerHost) AddZone(zone string) {
if strings.HasSuffix(zone, ".") {
zone = zone[:len(zone)-1]
}
if !strings.HasPrefix(zone, ".") {
zone = "." + zone
}
p.bypassZones = append(p.bypassZones, zone)
}
// AddHost specifies a hostname that will use the bypass proxy.
func (p *PerHost) AddHost(host string) {
if strings.HasSuffix(host, ".") {
host = host[:len(host)-1]
}
p.bypassHosts = append(p.bypassHosts, host)
}
libgo/go/exp/proxy/per_host_test.go deleted 100644 → 0
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package proxy
import (
"errors"
"net"
"reflect"
"testing"
)
type recordingProxy struct {
addrs []string
}
func (r *recordingProxy) Dial(network, addr string) (net.Conn, error) {
r.addrs = append(r.addrs, addr)
return nil, errors.New("recordingProxy")
}
func TestPerHost(t *testing.T) {
var def, bypass recordingProxy
perHost := NewPerHost(&def, &bypass)
perHost.AddFromString("localhost,*.zone,127.0.0.1,10.0.0.1/8,1000::/16")
expectedDef := []string{
"example.com:123",
"1.2.3.4:123",
"[1001::]:123",
}
expectedBypass := []string{
"localhost:123",
"zone:123",
"foo.zone:123",
"127.0.0.1:123",
"10.1.2.3:123",
"[1000::]:123",
}
for _, addr := range expectedDef {
perHost.Dial("tcp", addr)
}
for _, addr := range expectedBypass {
perHost.Dial("tcp", addr)
}
if !reflect.DeepEqual(expectedDef, def.addrs) {
t.Errorf("Hosts which went to the default proxy didn't match. Got %v, want %v", def.addrs, expectedDef)
}
if !reflect.DeepEqual(expectedBypass, bypass.addrs) {
t.Errorf("Hosts which went to the bypass proxy didn't match. Got %v, want %v", bypass.addrs, expectedBypass)
}
}
libgo/go/exp/proxy/proxy.go deleted 100644 → 0
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package proxy provides support for a variety of protocols to proxy network
// data.
package proxy
import (
"errors"
"net"
"net/url"
"os"
)
// A Dialer is a means to establish a connection.
type Dialer interface {
// Dial connects to the given address via the proxy.
Dial(network, addr string) (c net.Conn, err error)
}
// Auth contains authentication parameters that specific Dialers may require.
type Auth struct {
User, Password string
}
// DefaultDialer returns the dialer specified by the proxy related variables in
// the environment.
func FromEnvironment() Dialer {
allProxy := os.Getenv("all_proxy")
if len(allProxy) == 0 {
return Direct
}
proxyURL, err := url.Parse(allProxy)
if err != nil {
return Direct
}
proxy, err := FromURL(proxyURL, Direct)
if err != nil {
return Direct
}
noProxy := os.Getenv("no_proxy")
if len(noProxy) == 0 {
return proxy
}
perHost := NewPerHost(proxy, Direct)
perHost.AddFromString(noProxy)
return perHost
}
// proxySchemes is a map from URL schemes to a function that creates a Dialer
// from a URL with such a scheme.
var proxySchemes map[string]func(*url.URL, Dialer) (Dialer, error)
// RegisterDialerType takes a URL scheme and a function to generate Dialers from
// a URL with that scheme and a forwarding Dialer. Registered schemes are used
// by FromURL.
func RegisterDialerType(scheme string, f func(*url.URL, Dialer) (Dialer, error)) {
if proxySchemes == nil {
proxySchemes = make(map[string]func(*url.URL, Dialer) (Dialer, error))
}
proxySchemes[scheme] = f
}
// FromURL returns a Dialer given a URL specification and an underlying
// Dialer for it to make network requests.
func FromURL(u *url.URL, forward Dialer) (Dialer, error) {
var auth *Auth
if u.User != nil {
auth = new(Auth)
auth.User = u.User.Username()
if p, ok := u.User.Password(); ok {
auth.Password = p
}
}
switch u.Scheme {
case "socks5":
return SOCKS5("tcp", u.Host, auth, forward)
}
// If the scheme doesn't match any of the built-in schemes, see if it
// was registered by another package.
if proxySchemes != nil {
if f, ok := proxySchemes[u.Scheme]; ok {
return f(u, forward)
}
}
return nil, errors.New("proxy: unknown scheme: " + u.Scheme)
}
libgo/go/exp/proxy/proxy_test.go deleted 100644 → 0
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package proxy
import (
"net"
"net/url"
"testing"
)
type testDialer struct {
network, addr string
}
func (t *testDialer) Dial(network, addr string) (net.Conn, error) {
t.network = network
t.addr = addr
return nil, t
}
func (t *testDialer) Error() string {
return "testDialer " + t.network + " " + t.addr
}
func TestFromURL(t *testing.T) {
u, err := url.Parse("socks5://user:password@1.2.3.4:5678")
if err != nil {
t.Fatalf("failed to parse URL: %s", err)
}
tp := &testDialer{}
proxy, err := FromURL(u, tp)
if err != nil {
t.Fatalf("FromURL failed: %s", err)
}
conn, err := proxy.Dial("tcp", "example.com:80")
if conn != nil {
t.Error("Dial unexpected didn't return an error")
}
if tp, ok := err.(*testDialer); ok {
if tp.network != "tcp" || tp.addr != "1.2.3.4:5678" {
t.Errorf("Dialer connected to wrong host. Wanted 1.2.3.4:5678, got: %v", tp)
}
} else {
t.Errorf("Unexpected error from Dial: %s", err)
}
}
libgo/go/exp/proxy/socks5.go deleted 100644 → 0
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package proxy
import (
"errors"
"io"
"net"
"strconv"
)
// SOCKS5 returns a Dialer that makes SOCKSv5 connections to the given address
// with an optional username and password. See RFC 1928.
func SOCKS5(network, addr string, auth *Auth, forward Dialer) (Dialer, error) {
s := &socks5{
network: network,
addr: addr,
forward: forward,
}
if auth != nil {
s.user = auth.User
s.password = auth.Password
}
return s, nil
}
type socks5 struct {
user, password string
network, addr string
forward Dialer
}
const socks5Version = 5
const (
socks5AuthNone = 0
socks5AuthPassword = 2
)
const socks5Connect = 1
const (
socks5IP4 = 1
socks5Domain = 3
socks5IP6 = 4
)
var socks5Errors = []string{
"",
"general failure",
"connection forbidden",
"network unreachable",
"host unreachable",
"connection refused",
"TTL expired",
"command not supported",
"address type not supported",
}
// Dial connects to the address addr on the network net via the SOCKS5 proxy.
func (s *socks5) Dial(network, addr string) (net.Conn, error) {
switch network {
case "tcp", "tcp6", "tcp4":
break
default:
return nil, errors.New("proxy: no support for SOCKS5 proxy connections of type " + network)
}
conn, err := s.forward.Dial(s.network, s.addr)
if err != nil {
return nil, err
}
closeConn := &conn
defer func() {
if closeConn != nil {
(*closeConn).Close()
}
}()
host, portStr, err := net.SplitHostPort(addr)
if err != nil {
return nil, err
}
port, err := strconv.Atoi(portStr)
if err != nil {
return nil, errors.New("proxy: failed to parse port number: " + portStr)
}
if port < 1 || port > 0xffff {
return nil, errors.New("proxy: port number out of range: " + portStr)
}
// the size here is just an estimate
buf := make([]byte, 0, 6+len(host))
buf = append(buf, socks5Version)
if len(s.user) > 0 && len(s.user) < 256 && len(s.password) < 256 {
buf = append(buf, 2 /* num auth methods */, socks5AuthNone, socks5AuthPassword)
} else {
buf = append(buf, 1 /* num auth methods */, socks5AuthNone)
}
if _, err = conn.Write(buf); err != nil {
return nil, errors.New("proxy: failed to write greeting to SOCKS5 proxy at " + s.addr + ": " + err.Error())
}
if _, err = io.ReadFull(conn, buf[:2]); err != nil {
return nil, errors.New("proxy: failed to read greeting from SOCKS5 proxy at " + s.addr + ": " + err.Error())
}
if buf[0] != 5 {
return nil, errors.New("proxy: SOCKS5 proxy at " + s.addr + " has unexpected version " + strconv.Itoa(int(buf[0])))
}
if buf[1] == 0xff {
return nil, errors.New("proxy: SOCKS5 proxy at " + s.addr + " requires authentication")
}
if buf[1] == socks5AuthPassword {
buf = buf[:0]
buf = append(buf, socks5Version)
buf = append(buf, uint8(len(s.user)))
buf = append(buf, s.user...)
buf = append(buf, uint8(len(s.password)))
buf = append(buf, s.password...)
if _, err = conn.Write(buf); err != nil {
return nil, errors.New("proxy: failed to write authentication request to SOCKS5 proxy at " + s.addr + ": " + err.Error())
}
if _, err = io.ReadFull(conn, buf[:2]); err != nil {
return nil, errors.New("proxy: failed to read authentication reply from SOCKS5 proxy at " + s.addr + ": " + err.Error())
}
if buf[1] != 0 {
return nil, errors.New("proxy: SOCKS5 proxy at " + s.addr + " rejected username/password")
}
}
buf = buf[:0]
buf = append(buf, socks5Version, socks5Connect, 0 /* reserved */)
if ip := net.ParseIP(host); ip != nil {
if len(ip) == 4 {
buf = append(buf, socks5IP4)
} else {
buf = append(buf, socks5IP6)
}
buf = append(buf, []byte(ip)...)
} else {
buf = append(buf, socks5Domain)
buf = append(buf, byte(len(host)))
buf = append(buf, host...)
}
buf = append(buf, byte(port>>8), byte(port))
if _, err = conn.Write(buf); err != nil {
return nil, errors.New("proxy: failed to write connect request to SOCKS5 proxy at " + s.addr + ": " + err.Error())
}
if _, err = io.ReadFull(conn, buf[:4]); err != nil {
return nil, errors.New("proxy: failed to read connect reply from SOCKS5 proxy at " + s.addr + ": " + err.Error())
}
failure := "unknown error"
if int(buf[1]) < len(socks5Errors) {
failure = socks5Errors[buf[1]]
}
if len(failure) > 0 {
return nil, errors.New("proxy: SOCKS5 proxy at " + s.addr + " failed to connect: " + failure)
}
bytesToDiscard := 0
switch buf[3] {
case socks5IP4:
bytesToDiscard = 4
case socks5IP6:
bytesToDiscard = 16
case socks5Domain:
_, err := io.ReadFull(conn, buf[:1])
if err != nil {
return nil, errors.New("proxy: failed to read domain length from SOCKS5 proxy at " + s.addr + ": " + err.Error())
}
bytesToDiscard = int(buf[0])
default:
return nil, errors.New("proxy: got unknown address type " + strconv.Itoa(int(buf[3])) + " from SOCKS5 proxy at " + s.addr)
}
if cap(buf) < bytesToDiscard {
buf = make([]byte, bytesToDiscard)
} else {
buf = buf[:bytesToDiscard]
}
if _, err = io.ReadFull(conn, buf); err != nil {
return nil, errors.New("proxy: failed to read address from SOCKS5 proxy at " + s.addr + ": " + err.Error())
}
// Also need to discard the port number
if _, err = io.ReadFull(conn, buf[:2]); err != nil {
return nil, errors.New("proxy: failed to read port from SOCKS5 proxy at " + s.addr + ": " + err.Error())
}
closeConn = nil
return conn, nil
}
libgo/go/exp/terminal/terminal_test.go deleted 100644 → 0
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package terminal
import (
"io"
"testing"
)
type MockTerminal struct {
toSend []byte
bytesPerRead int
received []byte
}
func (c *MockTerminal) Read(data []byte) (n int, err error) {
n = len(data)
if n == 0 {
return
}
if n > len(c.toSend) {
n = len(c.toSend)
}
if n == 0 {
return 0, io.EOF
}
if c.bytesPerRead > 0 && n > c.bytesPerRead {
n = c.bytesPerRead
}
copy(data, c.toSend[:n])
c.toSend = c.toSend[n:]
return
}
func (c *MockTerminal) Write(data []byte) (n int, err error) {
c.received = append(c.received, data...)
return len(data), nil
}
func TestClose(t *testing.T) {
c := &MockTerminal{}
ss := NewTerminal(c, "> ")
line, err := ss.ReadLine()
if line != "" {
t.Errorf("Expected empty line but got: %s", line)
}
if err != io.EOF {
t.Errorf("Error should have been EOF but got: %s", err)
}
}
var keyPressTests = []struct {
in string
line string
err error
}{
{
"",
"",
io.EOF,
},
{
"\r",
"",
nil,
},
{
"foo\r",
"foo",
nil,
},
{
"a\x1b[Cb\r", // right
"ab",
nil,
},
{
"a\x1b[Db\r", // left
"ba",
nil,
},
{
"a\177b\r", // backspace
"b",
nil,
},
}
func TestKeyPresses(t *testing.T) {
for i, test := range keyPressTests {
for j := 0; j < len(test.in); j++ {
c := &MockTerminal{
toSend: []byte(test.in),
bytesPerRead: j,
}
ss := NewTerminal(c, "> ")
line, err := ss.ReadLine()
if line != test.line {
t.Errorf("Line resulting from test %d (%d bytes per read) was '%s', expected '%s'", i, j, line, test.line)
break
}
if err != test.err {
t.Errorf("Error resulting from test %d (%d bytes per read) was '%v', expected '%v'", i, j, err, test.err)
break
}
}
}
}
libgo/go/exp/terminal/util.go deleted 100644 → 0
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build linux
// Package terminal provides support functions for dealing with terminals, as
// commonly found on UNIX systems.
//
// Putting a terminal into raw mode is the most common requirement:
//
// oldState, err := terminal.MakeRaw(0)
// if err != nil {
// panic(err)
// }
// defer terminal.Restore(0, oldState)
package terminal
import (
"io"
"syscall"
"unsafe"
)
// State contains the state of a terminal.
type State struct {
termios syscall.Termios
}
// IsTerminal returns true if the given file descriptor is a terminal.
func IsTerminal(fd int) bool {
var termios syscall.Termios
err := syscall.Tcgetattr(fd, &termios)
return err == nil
}
// MakeRaw put the terminal connected to the given file descriptor into raw
// mode and returns the previous state of the terminal so that it can be
// restored.
func MakeRaw(fd int) (*State, error) {
var oldState State
if err := syscall.Tcgetattr(fd, &oldState.termios); err != nil {
return nil, err
}
newState := oldState.termios
newState.Iflag &^= syscall.ISTRIP | syscall.INLCR | syscall.ICRNL | syscall.IGNCR | syscall.IXON | syscall.IXOFF
newState.Lflag &^= syscall.ECHO | syscall.ICANON | syscall.ISIG
if err := syscall.Tcsetattr(fd, syscall.TCSANOW, &newState); err != nil {
return nil, err
}
return &oldState, nil
}
// Restore restores the terminal connected to the given file descriptor to a
// previous state.
func Restore(fd int, state *State) error {
err := syscall.Tcsetattr(fd, syscall.TCSANOW, &state.termios)
return err
}
//extern ioctl
func ioctl(int, int, unsafe.Pointer) int
// GetSize returns the dimensions of the given terminal.
func GetSize(fd int) (width, height int, err error) {
var dimensions [4]uint16
if ioctl(fd, syscall.TIOCGWINSZ, unsafe.Pointer(&dimensions)) < 0 {
return -1, -1, syscall.GetErrno()
}
return int(dimensions[1]), int(dimensions[0]), nil
}
// ReadPassword reads a line of input from a terminal without local echo. This
// is commonly used for inputting passwords and other sensitive data. The slice
// returned does not include the \n.
func ReadPassword(fd int) ([]byte, error) {
var oldState syscall.Termios
if err := syscall.Tcgetattr(fd, &oldState); err != nil {
return nil, err
}
newState := oldState
newState.Lflag &^= syscall.ECHO
if err := syscall.Tcsetattr(fd, syscall.TCSANOW, &newState); err != nil {
return nil, err
}
defer func() {
syscall.Tcsetattr(fd, syscall.TCSANOW, &oldState)
}()
var buf [16]byte
var ret []byte
for {
n, err := syscall.Read(fd, buf[:])
if err != nil {
return nil, err
}
if n == 0 {
if len(ret) == 0 {
return nil, io.EOF
}
break
}
if buf[n-1] == '\n' {
n--
}
ret = append(ret, buf[:n]...)
if n < len(buf) {
break
}
}
return ret, nil
}
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