1 files changed, 391 insertions, 0 deletions
diff --git a/src/net/textproto/reader_test.go b/src/net/textproto/reader_test.go
new file mode 100644
index 0000000..3124d43
--- /dev/null
+++ b/src/net/textproto/reader_test.go
@@ -0,0 +1,391 @@
+// Copyright 2010 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 textproto
+
+import (
+	"bufio"
+	"bytes"
+	"io"
+	"reflect"
+	"strings"
+	"testing"
+)
+
+func reader(s string) *Reader {
+	return NewReader(bufio.NewReader(strings.NewReader(s)))
+}
+
+func TestReadLine(t *testing.T) {
+	r := reader("line1\nline2\n")
+	s, err := r.ReadLine()
+	if s != "line1" || err != nil {
+		t.Fatalf("Line 1: %s, %v", s, err)
+	}
+	s, err = r.ReadLine()
+	if s != "line2" || err != nil {
+		t.Fatalf("Line 2: %s, %v", s, err)
+	}
+	s, err = r.ReadLine()
+	if s != "" || err != io.EOF {
+		t.Fatalf("EOF: %s, %v", s, err)
+	}
+}
+
+func TestReadContinuedLine(t *testing.T) {
+	r := reader("line1\nline\n 2\nline3\n")
+	s, err := r.ReadContinuedLine()
+	if s != "line1" || err != nil {
+		t.Fatalf("Line 1: %s, %v", s, err)
+	}
+	s, err = r.ReadContinuedLine()
+	if s != "line 2" || err != nil {
+		t.Fatalf("Line 2: %s, %v", s, err)
+	}
+	s, err = r.ReadContinuedLine()
+	if s != "line3" || err != nil {
+		t.Fatalf("Line 3: %s, %v", s, err)
+	}
+	s, err = r.ReadContinuedLine()
+	if s != "" || err != io.EOF {
+		t.Fatalf("EOF: %s, %v", s, err)
+	}
+}
+
+func TestReadCodeLine(t *testing.T) {
+	r := reader("123 hi\n234 bye\n345 no way\n")
+	code, msg, err := r.ReadCodeLine(0)
+	if code != 123 || msg != "hi" || err != nil {
+		t.Fatalf("Line 1: %d, %s, %v", code, msg, err)
+	}
+	code, msg, err = r.ReadCodeLine(23)
+	if code != 234 || msg != "bye" || err != nil {
+		t.Fatalf("Line 2: %d, %s, %v", code, msg, err)
+	}
+	code, msg, err = r.ReadCodeLine(346)
+	if code != 345 || msg != "no way" || err == nil {
+		t.Fatalf("Line 3: %d, %s, %v", code, msg, err)
+	}
+	if e, ok := err.(*Error); !ok || e.Code != code || e.Msg != msg {
+		t.Fatalf("Line 3: wrong error %v\n", err)
+	}
+	code, msg, err = r.ReadCodeLine(1)
+	if code != 0 || msg != "" || err != io.EOF {
+		t.Fatalf("EOF: %d, %s, %v", code, msg, err)
+	}
+}
+
+func TestReadDotLines(t *testing.T) {
+	r := reader("dotlines\r\n.foo\r\n..bar\n...baz\nquux\r\n\r\n.\r\nanother\n")
+	s, err := r.ReadDotLines()
+	want := []string{"dotlines", "foo", ".bar", "..baz", "quux", ""}
+	if !reflect.DeepEqual(s, want) || err != nil {
+		t.Fatalf("ReadDotLines: %v, %v", s, err)
+	}
+
+	s, err = r.ReadDotLines()
+	want = []string{"another"}
+	if !reflect.DeepEqual(s, want) || err != io.ErrUnexpectedEOF {
+		t.Fatalf("ReadDotLines2: %v, %v", s, err)
+	}
+}
+
+func TestReadDotBytes(t *testing.T) {
+	r := reader("dotlines\r\n.foo\r\n..bar\n...baz\nquux\r\n\r\n.\r\nanot.her\r\n")
+	b, err := r.ReadDotBytes()
+	want := []byte("dotlines\nfoo\n.bar\n..baz\nquux\n\n")
+	if !reflect.DeepEqual(b, want) || err != nil {
+		t.Fatalf("ReadDotBytes: %q, %v", b, err)
+	}
+
+	b, err = r.ReadDotBytes()
+	want = []byte("anot.her\n")
+	if !reflect.DeepEqual(b, want) || err != io.ErrUnexpectedEOF {
+		t.Fatalf("ReadDotBytes2: %q, %v", b, err)
+	}
+}
+
+func TestReadMIMEHeader(t *testing.T) {
+	r := reader("my-key: Value 1  \r\nLong-key: Even \n Longer Value\r\nmy-Key: Value 2\r\n\n")
+	m, err := r.ReadMIMEHeader()
+	want := MIMEHeader{
+		"My-Key":   {"Value 1", "Value 2"},
+		"Long-Key": {"Even Longer Value"},
+	}
+	if !reflect.DeepEqual(m, want) || err != nil {
+		t.Fatalf("ReadMIMEHeader: %v, %v; want %v", m, err, want)
+	}
+}
+
+func TestReadMIMEHeaderSingle(t *testing.T) {
+	r := reader("Foo: bar\n\n")
+	m, err := r.ReadMIMEHeader()
+	want := MIMEHeader{"Foo": {"bar"}}
+	if !reflect.DeepEqual(m, want) || err != nil {
+		t.Fatalf("ReadMIMEHeader: %v, %v; want %v", m, err, want)
+	}
+}
+
+func TestReadMIMEHeaderNoKey(t *testing.T) {
+	r := reader(": bar\ntest-1: 1\n\n")
+	m, err := r.ReadMIMEHeader()
+	want := MIMEHeader{"Test-1": {"1"}}
+	if !reflect.DeepEqual(m, want) || err != nil {
+		t.Fatalf("ReadMIMEHeader: %v, %v; want %v", m, err, want)
+	}
+}
+
+func TestLargeReadMIMEHeader(t *testing.T) {
+	data := make([]byte, 16*1024)
+	for i := 0; i < len(data); i++ {
+		data[i] = 'x'
+	}
+	sdata := string(data)
+	r := reader("Cookie: " + sdata + "\r\n\n")
+	m, err := r.ReadMIMEHeader()
+	if err != nil {
+		t.Fatalf("ReadMIMEHeader: %v", err)
+	}
+	cookie := m.Get("Cookie")
+	if cookie != sdata {
+		t.Fatalf("ReadMIMEHeader: %v bytes, want %v bytes", len(cookie), len(sdata))
+	}
+}
+
+// TestReadMIMEHeaderNonCompliant checks that we don't normalize headers
+// with spaces before colons, and accept spaces in keys.
+func TestReadMIMEHeaderNonCompliant(t *testing.T) {
+	// These invalid headers will be rejected by net/http according to RFC 7230.
+	r := reader("Foo: bar\r\n" +
+		"Content-Language: en\r\n" +
+		"SID : 0\r\n" +
+		"Audio Mode : None\r\n" +
+		"Privilege : 127\r\n\r\n")
+	m, err := r.ReadMIMEHeader()
+	want := MIMEHeader{
+		"Foo":              {"bar"},
+		"Content-Language": {"en"},
+		"SID ":             {"0"},
+		"Audio Mode ":      {"None"},
+		"Privilege ":       {"127"},
+	}
+	if !reflect.DeepEqual(m, want) || err != nil {
+		t.Fatalf("ReadMIMEHeader =\n%v, %v; want:\n%v", m, err, want)
+	}
+}
+
+func TestReadMIMEHeaderMalformed(t *testing.T) {
+	inputs := []string{
+		"No colon first line\r\nFoo: foo\r\n\r\n",
+		" No colon first line with leading space\r\nFoo: foo\r\n\r\n",
+		"\tNo colon first line with leading tab\r\nFoo: foo\r\n\r\n",
+		" First: line with leading space\r\nFoo: foo\r\n\r\n",
+		"\tFirst: line with leading tab\r\nFoo: foo\r\n\r\n",
+		"Foo: foo\r\nNo colon second line\r\n\r\n",
+		"Foo-\n\tBar: foo\r\n\r\n",
+		"Foo-\r\n\tBar: foo\r\n\r\n",
+		"Foo\r\n\t: foo\r\n\r\n",
+		"Foo-\n\tBar",
+	}
+
+	for _, input := range inputs {
+		r := reader(input)
+		if m, err := r.ReadMIMEHeader(); err == nil {
+			t.Errorf("ReadMIMEHeader(%q) = %v, %v; want nil, err", input, m, err)
+		}
+	}
+}
+
+// Test that continued lines are properly trimmed. Issue 11204.
+func TestReadMIMEHeaderTrimContinued(t *testing.T) {
+	// In this header, \n and \r\n terminated lines are mixed on purpose.
+	// We expect each line to be trimmed (prefix and suffix) before being concatenated.
+	// Keep the spaces as they are.
+	r := reader("" + // for code formatting purpose.
+		"a:\n" +
+		" 0 \r\n" +
+		"b:1 \t\r\n" +
+		"c: 2\r\n" +
+		" 3\t\n" +
+		"  \t 4  \r\n\n")
+	m, err := r.ReadMIMEHeader()
+	if err != nil {
+		t.Fatal(err)
+	}
+	want := MIMEHeader{
+		"A": {"0"},
+		"B": {"1"},
+		"C": {"2 3 4"},
+	}
+	if !reflect.DeepEqual(m, want) {
+		t.Fatalf("ReadMIMEHeader mismatch.\n got: %q\nwant: %q", m, want)
+	}
+}
+
+type readResponseTest struct {
+	in       string
+	inCode   int
+	wantCode int
+	wantMsg  string
+}
+
+var readResponseTests = []readResponseTest{
+	{"230-Anonymous access granted, restrictions apply\n" +
+		"Read the file README.txt,\n" +
+		"230  please",
+		23,
+		230,
+		"Anonymous access granted, restrictions apply\nRead the file README.txt,\n please",
+	},
+
+	{"230 Anonymous access granted, restrictions apply\n",
+		23,
+		230,
+		"Anonymous access granted, restrictions apply",
+	},
+
+	{"400-A\n400-B\n400 C",
+		4,
+		400,
+		"A\nB\nC",
+	},
+
+	{"400-A\r\n400-B\r\n400 C\r\n",
+		4,
+		400,
+		"A\nB\nC",
+	},
+}
+
+// See https://www.ietf.org/rfc/rfc959.txt page 36.
+func TestRFC959Lines(t *testing.T) {
+	for i, tt := range readResponseTests {
+		r := reader(tt.in + "\nFOLLOWING DATA")
+		code, msg, err := r.ReadResponse(tt.inCode)
+		if err != nil {
+			t.Errorf("#%d: ReadResponse: %v", i, err)
+			continue
+		}
+		if code != tt.wantCode {
+			t.Errorf("#%d: code=%d, want %d", i, code, tt.wantCode)
+		}
+		if msg != tt.wantMsg {
+			t.Errorf("#%d: msg=%q, want %q", i, msg, tt.wantMsg)
+		}
+	}
+}
+
+// Test that multi-line errors are appropriately and fully read. Issue 10230.
+func TestReadMultiLineError(t *testing.T) {
+	r := reader("550-5.1.1 The email account that you tried to reach does not exist. Please try\n" +
+		"550-5.1.1 double-checking the recipient's email address for typos or\n" +
+		"550-5.1.1 unnecessary spaces. Learn more at\n" +
+		"Unexpected but legal text!\n" +
+		"550 5.1.1 https://support.google.com/mail/answer/6596 h20si25154304pfd.166 - gsmtp\n")
+
+	wantMsg := "5.1.1 The email account that you tried to reach does not exist. Please try\n" +
+		"5.1.1 double-checking the recipient's email address for typos or\n" +
+		"5.1.1 unnecessary spaces. Learn more at\n" +
+		"Unexpected but legal text!\n" +
+		"5.1.1 https://support.google.com/mail/answer/6596 h20si25154304pfd.166 - gsmtp"
+
+	code, msg, err := r.ReadResponse(250)
+	if err == nil {
+		t.Errorf("ReadResponse: no error, want error")
+	}
+	if code != 550 {
+		t.Errorf("ReadResponse: code=%d, want %d", code, 550)
+	}
+	if msg != wantMsg {
+		t.Errorf("ReadResponse: msg=%q, want %q", msg, wantMsg)
+	}
+	if err != nil && err.Error() != "550 "+wantMsg {
+		t.Errorf("ReadResponse: error=%q, want %q", err.Error(), "550 "+wantMsg)
+	}
+}
+
+func TestCommonHeaders(t *testing.T) {
+	commonHeaderOnce.Do(initCommonHeader)
+	for h := range commonHeader {
+		if h != CanonicalMIMEHeaderKey(h) {
+			t.Errorf("Non-canonical header %q in commonHeader", h)
+		}
+	}
+	b := []byte("content-Length")
+	want := "Content-Length"
+	n := testing.AllocsPerRun(200, func() {
+		if x := canonicalMIMEHeaderKey(b); x != want {
+			t.Fatalf("canonicalMIMEHeaderKey(%q) = %q; want %q", b, x, want)
+		}
+	})
+	if n > 0 {
+		t.Errorf("canonicalMIMEHeaderKey allocs = %v; want 0", n)
+	}
+}
+
+var clientHeaders = strings.Replace(`Host: golang.org
+Connection: keep-alive
+Cache-Control: max-age=0
+Accept: application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
+User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US) AppleWebKit/534.3 (KHTML, like Gecko) Chrome/6.0.472.63 Safari/534.3
+Accept-Encoding: gzip,deflate,sdch
+Accept-Language: en-US,en;q=0.8,fr-CH;q=0.6
+Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3
+COOKIE: __utma=000000000.0000000000.0000000000.0000000000.0000000000.00; __utmb=000000000.0.00.0000000000; __utmc=000000000; __utmz=000000000.0000000000.00.0.utmcsr=code.google.com|utmccn=(referral)|utmcmd=referral|utmcct=/p/go/issues/detail
+Non-Interned: test
+
+`, "\n", "\r\n", -1)
+
+var serverHeaders = strings.Replace(`Content-Type: text/html; charset=utf-8
+Content-Encoding: gzip
+Date: Thu, 27 Sep 2012 09:03:33 GMT
+Server: Google Frontend
+Cache-Control: private
+Content-Length: 2298
+VIA: 1.1 proxy.example.com:80 (XXX/n.n.n-nnn)
+Connection: Close
+Non-Interned: test
+
+`, "\n", "\r\n", -1)
+
+func BenchmarkReadMIMEHeader(b *testing.B) {
+	b.ReportAllocs()
+	for _, set := range []struct {
+		name    string
+		headers string
+	}{
+		{"client_headers", clientHeaders},
+		{"server_headers", serverHeaders},
+	} {
+		b.Run(set.name, func(b *testing.B) {
+			var buf bytes.Buffer
+			br := bufio.NewReader(&buf)
+			r := NewReader(br)
+
+			for i := 0; i < b.N; i++ {
+				buf.WriteString(set.headers)
+				if _, err := r.ReadMIMEHeader(); err != nil {
+					b.Fatal(err)
+				}
+			}
+		})
+	}
+}
+
+func BenchmarkUncommon(b *testing.B) {
+	b.ReportAllocs()
+	var buf bytes.Buffer
+	br := bufio.NewReader(&buf)
+	r := NewReader(br)
+	for i := 0; i < b.N; i++ {
+		buf.WriteString("uncommon-header-for-benchmark: foo\r\n\r\n")
+		h, err := r.ReadMIMEHeader()
+		if err != nil {
+			b.Fatal(err)
+		}
+		if _, ok := h["Uncommon-Header-For-Benchmark"]; !ok {
+			b.Fatal("Missing result header.")
+		}
+	}
+}