504 lines
12 KiB
Go
504 lines
12 KiB
Go
// Copyright 2010 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package smtp
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import (
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"bufio"
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"bytes"
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"io"
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"net"
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"net/textproto"
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"strings"
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"testing"
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"time"
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)
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type authTest struct {
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auth Auth
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challenges []string
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name string
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responses []string
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}
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var authTests = []authTest{
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{PlainAuth("", "user", "pass", "testserver"), []string{}, "PLAIN", []string{"\x00user\x00pass"}},
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{PlainAuth("foo", "bar", "baz", "testserver"), []string{}, "PLAIN", []string{"foo\x00bar\x00baz"}},
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{CRAMMD5Auth("user", "pass"), []string{"<123456.1322876914@testserver>"}, "CRAM-MD5", []string{"", "user 287eb355114cf5c471c26a875f1ca4ae"}},
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}
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func TestAuth(t *testing.T) {
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testLoop:
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for i, test := range authTests {
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name, resp, err := test.auth.Start(&ServerInfo{"testserver", true, nil})
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if name != test.name {
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t.Errorf("#%d got name %s, expected %s", i, name, test.name)
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}
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if !bytes.Equal(resp, []byte(test.responses[0])) {
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t.Errorf("#%d got response %s, expected %s", i, resp, test.responses[0])
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}
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if err != nil {
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t.Errorf("#%d error: %s", i, err)
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}
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for j := range test.challenges {
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challenge := []byte(test.challenges[j])
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expected := []byte(test.responses[j+1])
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resp, err := test.auth.Next(challenge, true)
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if err != nil {
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t.Errorf("#%d error: %s", i, err)
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continue testLoop
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}
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if !bytes.Equal(resp, expected) {
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t.Errorf("#%d got %s, expected %s", i, resp, expected)
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continue testLoop
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}
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}
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}
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}
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func TestAuthPlain(t *testing.T) {
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auth := PlainAuth("foo", "bar", "baz", "servername")
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tests := []struct {
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server *ServerInfo
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err string
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}{
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{
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server: &ServerInfo{Name: "servername", TLS: true},
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},
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{
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// Okay; explicitly advertised by server.
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server: &ServerInfo{Name: "servername", Auth: []string{"PLAIN"}},
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},
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{
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server: &ServerInfo{Name: "servername", Auth: []string{"CRAM-MD5"}},
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err: "unencrypted connection",
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},
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{
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server: &ServerInfo{Name: "attacker", TLS: true},
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err: "wrong host name",
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},
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}
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for i, tt := range tests {
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_, _, err := auth.Start(tt.server)
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got := ""
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if err != nil {
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got = err.Error()
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}
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if got != tt.err {
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t.Errorf("%d. got error = %q; want %q", i, got, tt.err)
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}
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}
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}
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type faker struct {
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io.ReadWriter
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}
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func (f faker) Close() error { return nil }
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func (f faker) LocalAddr() net.Addr { return nil }
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func (f faker) RemoteAddr() net.Addr { return nil }
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func (f faker) SetDeadline(time.Time) error { return nil }
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func (f faker) SetReadDeadline(time.Time) error { return nil }
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func (f faker) SetWriteDeadline(time.Time) error { return nil }
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func TestBasic(t *testing.T) {
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server := strings.Join(strings.Split(basicServer, "\n"), "\r\n")
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client := strings.Join(strings.Split(basicClient, "\n"), "\r\n")
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var cmdbuf bytes.Buffer
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bcmdbuf := bufio.NewWriter(&cmdbuf)
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var fake faker
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fake.ReadWriter = bufio.NewReadWriter(bufio.NewReader(strings.NewReader(server)), bcmdbuf)
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c := &Client{Text: textproto.NewConn(fake), localName: "localhost"}
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if err := c.helo(); err != nil {
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t.Fatalf("HELO failed: %s", err)
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}
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if err := c.ehlo(); err == nil {
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t.Fatalf("Expected first EHLO to fail")
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}
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if err := c.ehlo(); err != nil {
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t.Fatalf("Second EHLO failed: %s", err)
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}
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c.didHello = true
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if ok, args := c.Extension("aUtH"); !ok || args != "LOGIN PLAIN" {
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t.Fatalf("Expected AUTH supported")
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}
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if ok, _ := c.Extension("DSN"); ok {
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t.Fatalf("Shouldn't support DSN")
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}
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if err := c.Mail("user@gmail.com"); err == nil {
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t.Fatalf("MAIL should require authentication")
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}
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if err := c.Verify("user1@gmail.com"); err == nil {
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t.Fatalf("First VRFY: expected no verification")
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}
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if err := c.Verify("user2@gmail.com"); err != nil {
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t.Fatalf("Second VRFY: expected verification, got %s", err)
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}
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// fake TLS so authentication won't complain
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c.tls = true
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c.serverName = "smtp.google.com"
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if err := c.Auth(PlainAuth("", "user", "pass", "smtp.google.com")); err != nil {
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t.Fatalf("AUTH failed: %s", err)
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}
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if err := c.Mail("user@gmail.com"); err != nil {
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t.Fatalf("MAIL failed: %s", err)
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}
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if err := c.Rcpt("golang-nuts@googlegroups.com"); err != nil {
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t.Fatalf("RCPT failed: %s", err)
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}
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msg := `From: user@gmail.com
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To: golang-nuts@googlegroups.com
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Subject: Hooray for Go
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Line 1
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.Leading dot line .
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Goodbye.`
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w, err := c.Data()
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if err != nil {
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t.Fatalf("DATA failed: %s", err)
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}
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if _, err := w.Write([]byte(msg)); err != nil {
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t.Fatalf("Data write failed: %s", err)
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}
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if err := w.Close(); err != nil {
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t.Fatalf("Bad data response: %s", err)
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}
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if err := c.Quit(); err != nil {
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t.Fatalf("QUIT failed: %s", err)
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}
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bcmdbuf.Flush()
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actualcmds := cmdbuf.String()
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if client != actualcmds {
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t.Fatalf("Got:\n%s\nExpected:\n%s", actualcmds, client)
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}
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}
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var basicServer = `250 mx.google.com at your service
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502 Unrecognized command.
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250-mx.google.com at your service
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250-SIZE 35651584
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250-AUTH LOGIN PLAIN
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250 8BITMIME
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530 Authentication required
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252 Send some mail, I'll try my best
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250 User is valid
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235 Accepted
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250 Sender OK
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250 Receiver OK
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354 Go ahead
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250 Data OK
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221 OK
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`
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var basicClient = `HELO localhost
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EHLO localhost
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EHLO localhost
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MAIL FROM:<user@gmail.com> BODY=8BITMIME
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VRFY user1@gmail.com
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VRFY user2@gmail.com
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AUTH PLAIN AHVzZXIAcGFzcw==
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MAIL FROM:<user@gmail.com> BODY=8BITMIME
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RCPT TO:<golang-nuts@googlegroups.com>
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DATA
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From: user@gmail.com
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To: golang-nuts@googlegroups.com
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Subject: Hooray for Go
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Line 1
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..Leading dot line .
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Goodbye.
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.
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QUIT
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`
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func TestNewClient(t *testing.T) {
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server := strings.Join(strings.Split(newClientServer, "\n"), "\r\n")
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client := strings.Join(strings.Split(newClientClient, "\n"), "\r\n")
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var cmdbuf bytes.Buffer
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bcmdbuf := bufio.NewWriter(&cmdbuf)
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out := func() string {
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bcmdbuf.Flush()
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return cmdbuf.String()
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}
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var fake faker
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fake.ReadWriter = bufio.NewReadWriter(bufio.NewReader(strings.NewReader(server)), bcmdbuf)
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c, err := NewClient(fake, "fake.host")
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if err != nil {
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t.Fatalf("NewClient: %v\n(after %v)", err, out())
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}
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if ok, args := c.Extension("aUtH"); !ok || args != "LOGIN PLAIN" {
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t.Fatalf("Expected AUTH supported")
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}
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if ok, _ := c.Extension("DSN"); ok {
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t.Fatalf("Shouldn't support DSN")
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}
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if err := c.Quit(); err != nil {
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t.Fatalf("QUIT failed: %s", err)
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}
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actualcmds := out()
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if client != actualcmds {
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t.Fatalf("Got:\n%s\nExpected:\n%s", actualcmds, client)
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}
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}
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var newClientServer = `220 hello world
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250-mx.google.com at your service
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250-SIZE 35651584
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250-AUTH LOGIN PLAIN
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250 8BITMIME
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221 OK
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`
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var newClientClient = `EHLO localhost
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QUIT
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`
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func TestNewClient2(t *testing.T) {
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server := strings.Join(strings.Split(newClient2Server, "\n"), "\r\n")
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client := strings.Join(strings.Split(newClient2Client, "\n"), "\r\n")
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var cmdbuf bytes.Buffer
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bcmdbuf := bufio.NewWriter(&cmdbuf)
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var fake faker
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fake.ReadWriter = bufio.NewReadWriter(bufio.NewReader(strings.NewReader(server)), bcmdbuf)
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c, err := NewClient(fake, "fake.host")
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if err != nil {
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t.Fatalf("NewClient: %v", err)
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}
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if ok, _ := c.Extension("DSN"); ok {
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t.Fatalf("Shouldn't support DSN")
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}
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if err := c.Quit(); err != nil {
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t.Fatalf("QUIT failed: %s", err)
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}
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bcmdbuf.Flush()
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actualcmds := cmdbuf.String()
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if client != actualcmds {
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t.Fatalf("Got:\n%s\nExpected:\n%s", actualcmds, client)
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}
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}
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var newClient2Server = `220 hello world
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502 EH?
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250-mx.google.com at your service
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250-SIZE 35651584
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250-AUTH LOGIN PLAIN
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250 8BITMIME
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221 OK
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`
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var newClient2Client = `EHLO localhost
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HELO localhost
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QUIT
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`
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func TestHello(t *testing.T) {
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if len(helloServer) != len(helloClient) {
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t.Fatalf("Hello server and client size mismatch")
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}
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for i := 0; i < len(helloServer); i++ {
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server := strings.Join(strings.Split(baseHelloServer+helloServer[i], "\n"), "\r\n")
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client := strings.Join(strings.Split(baseHelloClient+helloClient[i], "\n"), "\r\n")
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var cmdbuf bytes.Buffer
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bcmdbuf := bufio.NewWriter(&cmdbuf)
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var fake faker
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fake.ReadWriter = bufio.NewReadWriter(bufio.NewReader(strings.NewReader(server)), bcmdbuf)
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c, err := NewClient(fake, "fake.host")
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if err != nil {
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t.Fatalf("NewClient: %v", err)
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}
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c.localName = "customhost"
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err = nil
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switch i {
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case 0:
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err = c.Hello("customhost")
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case 1:
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err = c.StartTLS(nil)
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if err.Error() == "502 Not implemented" {
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err = nil
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}
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case 2:
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err = c.Verify("test@example.com")
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case 3:
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c.tls = true
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c.serverName = "smtp.google.com"
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err = c.Auth(PlainAuth("", "user", "pass", "smtp.google.com"))
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case 4:
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err = c.Mail("test@example.com")
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case 5:
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ok, _ := c.Extension("feature")
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if ok {
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t.Errorf("Expected FEATURE not to be supported")
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}
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case 6:
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err = c.Reset()
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case 7:
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err = c.Quit()
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case 8:
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err = c.Verify("test@example.com")
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if err != nil {
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err = c.Hello("customhost")
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if err != nil {
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t.Errorf("Want error, got none")
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}
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}
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default:
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t.Fatalf("Unhandled command")
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}
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if err != nil {
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t.Errorf("Command %d failed: %v", i, err)
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}
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bcmdbuf.Flush()
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actualcmds := cmdbuf.String()
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if client != actualcmds {
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t.Errorf("Got:\n%s\nExpected:\n%s", actualcmds, client)
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}
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}
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}
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var baseHelloServer = `220 hello world
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502 EH?
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250-mx.google.com at your service
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250 FEATURE
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`
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var helloServer = []string{
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"",
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"502 Not implemented\n",
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"250 User is valid\n",
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"235 Accepted\n",
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"250 Sender ok\n",
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"",
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"250 Reset ok\n",
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"221 Goodbye\n",
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"250 Sender ok\n",
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}
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var baseHelloClient = `EHLO customhost
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HELO customhost
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`
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var helloClient = []string{
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"",
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"STARTTLS\n",
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"VRFY test@example.com\n",
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"AUTH PLAIN AHVzZXIAcGFzcw==\n",
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"MAIL FROM:<test@example.com>\n",
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"",
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"RSET\n",
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"QUIT\n",
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"VRFY test@example.com\n",
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}
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func TestSendMail(t *testing.T) {
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server := strings.Join(strings.Split(sendMailServer, "\n"), "\r\n")
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client := strings.Join(strings.Split(sendMailClient, "\n"), "\r\n")
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var cmdbuf bytes.Buffer
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bcmdbuf := bufio.NewWriter(&cmdbuf)
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l, err := net.Listen("tcp", "127.0.0.1:0")
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if err != nil {
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t.Fatalf("Unable to to create listener: %v", err)
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}
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defer l.Close()
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// prevent data race on bcmdbuf
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var done = make(chan struct{})
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go func(data []string) {
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defer close(done)
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conn, err := l.Accept()
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if err != nil {
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t.Errorf("Accept error: %v", err)
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return
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}
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defer conn.Close()
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tc := textproto.NewConn(conn)
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for i := 0; i < len(data) && data[i] != ""; i++ {
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tc.PrintfLine(data[i])
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for len(data[i]) >= 4 && data[i][3] == '-' {
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i++
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tc.PrintfLine(data[i])
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}
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if data[i] == "221 Goodbye" {
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return
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}
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read := false
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for !read || data[i] == "354 Go ahead" {
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msg, err := tc.ReadLine()
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bcmdbuf.Write([]byte(msg + "\r\n"))
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read = true
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if err != nil {
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t.Errorf("Read error: %v", err)
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return
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}
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if data[i] == "354 Go ahead" && msg == "." {
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break
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}
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}
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}
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}(strings.Split(server, "\r\n"))
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err = SendMail(l.Addr().String(), nil, "test@example.com", []string{"other@example.com"}, []byte(strings.Replace(`From: test@example.com
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To: other@example.com
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Subject: SendMail test
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SendMail is working for me.
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`, "\n", "\r\n", -1)))
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if err != nil {
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t.Errorf("%v", err)
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}
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<-done
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bcmdbuf.Flush()
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actualcmds := cmdbuf.String()
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if client != actualcmds {
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t.Errorf("Got:\n%s\nExpected:\n%s", actualcmds, client)
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}
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}
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var sendMailServer = `220 hello world
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502 EH?
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250 mx.google.com at your service
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250 Sender ok
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250 Receiver ok
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354 Go ahead
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250 Data ok
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221 Goodbye
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`
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var sendMailClient = `EHLO localhost
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HELO localhost
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MAIL FROM:<test@example.com>
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RCPT TO:<other@example.com>
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DATA
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From: test@example.com
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To: other@example.com
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Subject: SendMail test
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SendMail is working for me.
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.
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QUIT
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`
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