1 files changed, 380 insertions, 0 deletions
diff --git a/src/pkg/mime/multipart/multipart_test.go b/src/pkg/mime/multipart/multipart_test.go
new file mode 100644
index 000000000..38079e53a
--- /dev/null
+++ b/src/pkg/mime/multipart/multipart_test.go
@@ -0,0 +1,380 @@
+// 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 multipart
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"json"
+	"os"
+	"strings"
+	"testing"
+)
+
+func TestHorizontalWhitespace(t *testing.T) {
+	if !onlyHorizontalWhitespace([]byte(" \t")) {
+		t.Error("expected pass")
+	}
+	if onlyHorizontalWhitespace([]byte("foo bar")) {
+		t.Error("expected failure")
+	}
+}
+
+func TestBoundaryLine(t *testing.T) {
+	mr := NewReader(strings.NewReader(""), "myBoundary")
+	if !mr.isBoundaryDelimiterLine([]byte("--myBoundary\r\n")) {
+		t.Error("expected")
+	}
+	if !mr.isBoundaryDelimiterLine([]byte("--myBoundary \r\n")) {
+		t.Error("expected")
+	}
+	if !mr.isBoundaryDelimiterLine([]byte("--myBoundary \n")) {
+		t.Error("expected")
+	}
+	if mr.isBoundaryDelimiterLine([]byte("--myBoundary bogus \n")) {
+		t.Error("expected fail")
+	}
+	if mr.isBoundaryDelimiterLine([]byte("--myBoundary bogus--")) {
+		t.Error("expected fail")
+	}
+}
+
+func escapeString(v string) string {
+	bytes, _ := json.Marshal(v)
+	return string(bytes)
+}
+
+func expectEq(t *testing.T, expected, actual, what string) {
+	if expected == actual {
+		return
+	}
+	t.Errorf("Unexpected value for %s; got %s (len %d) but expected: %s (len %d)",
+		what, escapeString(actual), len(actual), escapeString(expected), len(expected))
+}
+
+func TestNameAccessors(t *testing.T) {
+	tests := [...][3]string{
+		{`form-data; name="foo"`, "foo", ""},
+		{` form-data ; name=foo`, "foo", ""},
+		{`FORM-DATA;name="foo"`, "foo", ""},
+		{` FORM-DATA ; name="foo"`, "foo", ""},
+		{` FORM-DATA ; name="foo"`, "foo", ""},
+		{` FORM-DATA ; name=foo`, "foo", ""},
+		{` FORM-DATA ; filename="foo.txt"; name=foo; baz=quux`, "foo", "foo.txt"},
+		{` not-form-data ; filename="bar.txt"; name=foo; baz=quux`, "", "bar.txt"},
+	}
+	for i, test := range tests {
+		p := &Part{Header: make(map[string][]string)}
+		p.Header.Set("Content-Disposition", test[0])
+		if g, e := p.FormName(), test[1]; g != e {
+			t.Errorf("test %d: FormName() = %q; want %q", i, g, e)
+		}
+		if g, e := p.FileName(), test[2]; g != e {
+			t.Errorf("test %d: FileName() = %q; want %q", i, g, e)
+		}
+	}
+}
+
+var longLine = strings.Repeat("\n\n\r\r\r\n\r\000", (1<<20)/8)
+
+func testMultipartBody(sep string) string {
+	testBody := `
+This is a multi-part message.  This line is ignored.
+--MyBoundary
+Header1: value1
+HEADER2: value2
+foo-bar: baz
+
+My value
+The end.
+--MyBoundary
+name: bigsection
+
+[longline]
+--MyBoundary
+Header1: value1b
+HEADER2: value2b
+foo-bar: bazb
+
+Line 1
+Line 2
+Line 3 ends in a newline, but just one.
+
+--MyBoundary
+
+never read data
+--MyBoundary--
+
+
+useless trailer
+`
+	testBody = strings.Replace(testBody, "\n", sep, -1)
+	return strings.Replace(testBody, "[longline]", longLine, 1)
+}
+
+func TestMultipart(t *testing.T) {
+	bodyReader := strings.NewReader(testMultipartBody("\r\n"))
+	testMultipart(t, bodyReader, false)
+}
+
+func TestMultipartOnlyNewlines(t *testing.T) {
+	bodyReader := strings.NewReader(testMultipartBody("\n"))
+	testMultipart(t, bodyReader, true)
+}
+
+func TestMultipartSlowInput(t *testing.T) {
+	bodyReader := strings.NewReader(testMultipartBody("\r\n"))
+	testMultipart(t, &slowReader{bodyReader}, false)
+}
+
+func testMultipart(t *testing.T, r io.Reader, onlyNewlines bool) {
+	reader := NewReader(r, "MyBoundary")
+	buf := new(bytes.Buffer)
+
+	// Part1
+	part, err := reader.NextPart()
+	if part == nil || err != nil {
+		t.Error("Expected part1")
+		return
+	}
+	if x := part.Header.Get("Header1"); x != "value1" {
+		t.Errorf("part.Header.Get(%q) = %q, want %q", "Header1", x, "value1")
+	}
+	if x := part.Header.Get("foo-bar"); x != "baz" {
+		t.Errorf("part.Header.Get(%q) = %q, want %q", "foo-bar", x, "baz")
+	}
+	if x := part.Header.Get("Foo-Bar"); x != "baz" {
+		t.Errorf("part.Header.Get(%q) = %q, want %q", "Foo-Bar", x, "baz")
+	}
+	buf.Reset()
+	if _, err := io.Copy(buf, part); err != nil {
+		t.Errorf("part 1 copy: %v", err)
+	}
+
+	adjustNewlines := func(s string) string {
+		if onlyNewlines {
+			return strings.Replace(s, "\r\n", "\n", -1)
+		}
+		return s
+	}
+
+	expectEq(t, adjustNewlines("My value\r\nThe end."), buf.String(), "Value of first part")
+
+	// Part2
+	part, err = reader.NextPart()
+	if err != nil {
+		t.Fatalf("Expected part2; got: %v", err)
+		return
+	}
+	if e, g := "bigsection", part.Header.Get("name"); e != g {
+		t.Errorf("part2's name header: expected %q, got %q", e, g)
+	}
+	buf.Reset()
+	if _, err := io.Copy(buf, part); err != nil {
+		t.Errorf("part 2 copy: %v", err)
+	}
+	s := buf.String()
+	if len(s) != len(longLine) {
+		t.Errorf("part2 body expected long line of length %d; got length %d",
+			len(longLine), len(s))
+	}
+	if s != longLine {
+		t.Errorf("part2 long body didn't match")
+	}
+
+	// Part3
+	part, err = reader.NextPart()
+	if part == nil || err != nil {
+		t.Error("Expected part3")
+		return
+	}
+	if part.Header.Get("foo-bar") != "bazb" {
+		t.Error("Expected foo-bar: bazb")
+	}
+	buf.Reset()
+	if _, err := io.Copy(buf, part); err != nil {
+		t.Errorf("part 3 copy: %v", err)
+	}
+	expectEq(t, adjustNewlines("Line 1\r\nLine 2\r\nLine 3 ends in a newline, but just one.\r\n"),
+		buf.String(), "body of part 3")
+
+	// Part4
+	part, err = reader.NextPart()
+	if part == nil || err != nil {
+		t.Error("Expected part 4 without errors")
+		return
+	}
+
+	// Non-existent part5
+	part, err = reader.NextPart()
+	if part != nil {
+		t.Error("Didn't expect a fifth part.")
+	}
+	if err != os.EOF {
+		t.Errorf("On fifth part expected os.EOF; got %v", err)
+	}
+}
+
+func TestVariousTextLineEndings(t *testing.T) {
+	tests := [...]string{
+		"Foo\nBar",
+		"Foo\nBar\n",
+		"Foo\r\nBar",
+		"Foo\r\nBar\r\n",
+		"Foo\rBar",
+		"Foo\rBar\r",
+		"\x00\x01\x02\x09\x0a\x0b\x0c\x0d\x0e\x0f\x10",
+	}
+
+	for testNum, expectedBody := range tests {
+		body := "--BOUNDARY\r\n" +
+			"Content-Disposition: form-data; name=\"value\"\r\n" +
+			"\r\n" +
+			expectedBody +
+			"\r\n--BOUNDARY--\r\n"
+		bodyReader := strings.NewReader(body)
+
+		reader := NewReader(bodyReader, "BOUNDARY")
+		buf := new(bytes.Buffer)
+		part, err := reader.NextPart()
+		if part == nil {
+			t.Errorf("Expected a body part on text %d", testNum)
+			continue
+		}
+		if err != nil {
+			t.Errorf("Unexpected error on text %d: %v", testNum, err)
+			continue
+		}
+		written, err := io.Copy(buf, part)
+		expectEq(t, expectedBody, buf.String(), fmt.Sprintf("test %d", testNum))
+		if err != nil {
+			t.Errorf("Error copying multipart; bytes=%v, error=%v", written, err)
+		}
+
+		part, err = reader.NextPart()
+		if part != nil {
+			t.Errorf("Unexpected part in test %d", testNum)
+		}
+		if err != os.EOF {
+			t.Errorf("On test %d expected os.EOF; got %v", testNum, err)
+		}
+
+	}
+}
+
+type maliciousReader struct {
+	t *testing.T
+	n int
+}
+
+const maxReadThreshold = 1 << 20
+
+func (mr *maliciousReader) Read(b []byte) (n int, err os.Error) {
+	mr.n += len(b)
+	if mr.n >= maxReadThreshold {
+		mr.t.Fatal("too much was read")
+		return 0, os.EOF
+	}
+	return len(b), nil
+}
+
+func TestLineLimit(t *testing.T) {
+	mr := &maliciousReader{t: t}
+	r := NewReader(mr, "fooBoundary")
+	part, err := r.NextPart()
+	if part != nil {
+		t.Errorf("unexpected part read")
+	}
+	if err == nil {
+		t.Errorf("expected an error")
+	}
+	if mr.n >= maxReadThreshold {
+		t.Errorf("expected to read < %d bytes; read %d", maxReadThreshold, mr.n)
+	}
+}
+
+func TestMultipartTruncated(t *testing.T) {
+	testBody := `
+This is a multi-part message.  This line is ignored.
+--MyBoundary
+foo-bar: baz
+
+Oh no, premature EOF!
+`
+	body := strings.Replace(testBody, "\n", "\r\n", -1)
+	bodyReader := strings.NewReader(body)
+	r := NewReader(bodyReader, "MyBoundary")
+
+	part, err := r.NextPart()
+	if err != nil {
+		t.Fatalf("didn't get a part")
+	}
+	_, err = io.Copy(ioutil.Discard, part)
+	if err != io.ErrUnexpectedEOF {
+		t.Fatalf("expected error io.ErrUnexpectedEOF; got %v", err)
+	}
+}
+
+func TestZeroLengthBody(t *testing.T) {
+	testBody := strings.Replace(`
+This is a multi-part message.  This line is ignored.
+--MyBoundary
+foo: bar
+
+
+--MyBoundary--
+`, "\n", "\r\n", -1)
+	r := NewReader(strings.NewReader(testBody), "MyBoundary")
+	part, err := r.NextPart()
+	if err != nil {
+		t.Fatalf("didn't get a part")
+	}
+	n, err := io.Copy(ioutil.Discard, part)
+	if err != nil {
+		t.Errorf("error reading part: %v", err)
+	}
+	if n != 0 {
+		t.Errorf("read %d bytes; expected 0", n)
+	}
+}
+
+type slowReader struct {
+	r io.Reader
+}
+
+func (s *slowReader) Read(p []byte) (int, os.Error) {
+	if len(p) == 0 {
+		return s.r.Read(p)
+	}
+	return s.r.Read(p[:1])
+}
+
+func TestLineContinuation(t *testing.T) {
+	// This body, extracted from an email, contains headers that span multiple
+	// lines.
+
+	// TODO: The original mail ended with a double-newline before the
+	// final delimiter; this was manually edited to use a CRLF.
+	testBody :=
+		"\n--Apple-Mail-2-292336769\nContent-Transfer-Encoding: 7bit\nContent-Type: text/plain;\n\tcharset=US-ASCII;\n\tdelsp=yes;\n\tformat=flowed\n\nI'm finding the same thing happening on my system (10.4.1).\n\n\n--Apple-Mail-2-292336769\nContent-Transfer-Encoding: quoted-printable\nContent-Type: text/html;\n\tcharset=ISO-8859-1\n\n<HTML><BODY>I'm finding the same thing =\nhappening on my system (10.4.1).=A0 But I built it with XCode =\n2.0.</BODY></=\nHTML>=\n\r\n--Apple-Mail-2-292336769--\n"
+
+	r := NewReader(strings.NewReader(testBody), "Apple-Mail-2-292336769")
+
+	for i := 0; i < 2; i++ {
+		part, err := r.NextPart()
+		if err != nil {
+			t.Fatalf("didn't get a part")
+		}
+		n, err := io.Copy(ioutil.Discard, part)
+		if err != nil {
+			t.Errorf("error reading part: %v", err)
+		}
+		if n <= 0 {
+			t.Errorf("read %d bytes; expected >0", n)
+		}
+	}
+}