297 lines
10 KiB
Go
297 lines
10 KiB
Go
// Copyright 2011 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 http_test
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import (
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"bytes"
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"fmt"
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"io"
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"log"
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. "net/http"
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"reflect"
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"strconv"
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"strings"
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"testing"
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)
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var sniffTests = []struct {
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desc string
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data []byte
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contentType string
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}{
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// Some nonsense.
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{"Empty", []byte{}, "text/plain; charset=utf-8"},
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{"Binary", []byte{1, 2, 3}, "application/octet-stream"},
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{"HTML document #1", []byte(`<HtMl><bOdY>blah blah blah</body></html>`), "text/html; charset=utf-8"},
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{"HTML document #2", []byte(`<HTML></HTML>`), "text/html; charset=utf-8"},
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{"HTML document #3 (leading whitespace)", []byte(` <!DOCTYPE HTML>...`), "text/html; charset=utf-8"},
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{"HTML document #4 (leading CRLF)", []byte("\r\n<html>..."), "text/html; charset=utf-8"},
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{"Plain text", []byte(`This is not HTML. It has ☃ though.`), "text/plain; charset=utf-8"},
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{"XML", []byte("\n<?xml!"), "text/xml; charset=utf-8"},
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// Image types.
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{"Windows icon", []byte("\x00\x00\x01\x00"), "image/x-icon"},
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{"Windows cursor", []byte("\x00\x00\x02\x00"), "image/x-icon"},
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{"BMP image", []byte("BM..."), "image/bmp"},
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{"GIF 87a", []byte(`GIF87a`), "image/gif"},
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{"GIF 89a", []byte(`GIF89a...`), "image/gif"},
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{"WEBP image", []byte("RIFF\x00\x00\x00\x00WEBPVP"), "image/webp"},
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{"PNG image", []byte("\x89PNG\x0D\x0A\x1A\x0A"), "image/png"},
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{"JPEG image", []byte("\xFF\xD8\xFF"), "image/jpeg"},
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// Audio types.
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{"MIDI audio", []byte("MThd\x00\x00\x00\x06\x00\x01"), "audio/midi"},
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{"MP3 audio/MPEG audio", []byte("ID3\x03\x00\x00\x00\x00\x0f"), "audio/mpeg"},
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{"WAV audio #1", []byte("RIFFb\xb8\x00\x00WAVEfmt \x12\x00\x00\x00\x06"), "audio/wave"},
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{"WAV audio #2", []byte("RIFF,\x00\x00\x00WAVEfmt \x12\x00\x00\x00\x06"), "audio/wave"},
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{"AIFF audio #1", []byte("FORM\x00\x00\x00\x00AIFFCOMM\x00\x00\x00\x12\x00\x01\x00\x00\x57\x55\x00\x10\x40\x0d\xf3\x34"), "audio/aiff"},
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{"OGG audio", []byte("OggS\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x7e\x46\x00\x00\x00\x00\x00\x00\x1f\xf6\xb4\xfc\x01\x1e\x01\x76\x6f\x72"), "application/ogg"},
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{"Must not match OGG", []byte("owow\x00"), "application/octet-stream"},
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{"Must not match OGG", []byte("oooS\x00"), "application/octet-stream"},
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{"Must not match OGG", []byte("oggS\x00"), "application/octet-stream"},
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// Video types.
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{"MP4 video", []byte("\x00\x00\x00\x18ftypmp42\x00\x00\x00\x00mp42isom<\x06t\xbfmdat"), "video/mp4"},
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{"AVI video #1", []byte("RIFF,O\n\x00AVI LISTÀ"), "video/avi"},
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{"AVI video #2", []byte("RIFF,\n\x00\x00AVI LISTÀ"), "video/avi"},
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// Font types.
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// {"MS.FontObject", []byte("\x00\x00")},
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{"TTF sample I", []byte("\x00\x01\x00\x00\x00\x17\x01\x00\x00\x04\x01\x60\x4f"), "font/ttf"},
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{"TTF sample II", []byte("\x00\x01\x00\x00\x00\x0e\x00\x80\x00\x03\x00\x60\x46"), "font/ttf"},
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{"OTTO sample I", []byte("\x4f\x54\x54\x4f\x00\x0e\x00\x80\x00\x03\x00\x60\x42\x41\x53\x45"), "font/otf"},
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{"woff sample I", []byte("\x77\x4f\x46\x46\x00\x01\x00\x00\x00\x00\x30\x54\x00\x0d\x00\x00"), "font/woff"},
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{"woff2 sample", []byte("\x77\x4f\x46\x32\x00\x01\x00\x00\x00"), "font/woff2"},
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{"wasm sample", []byte("\x00\x61\x73\x6d\x01\x00"), "application/wasm"},
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// Archive types
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{"RAR v1.5-v4.0", []byte("Rar!\x1A\x07\x00"), "application/x-rar-compressed"},
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{"RAR v5+", []byte("Rar!\x1A\x07\x01\x00"), "application/x-rar-compressed"},
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{"Incorrect RAR v1.5-v4.0", []byte("Rar \x1A\x07\x00"), "application/octet-stream"},
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{"Incorrect RAR v5+", []byte("Rar \x1A\x07\x01\x00"), "application/octet-stream"},
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}
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func TestDetectContentType(t *testing.T) {
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for _, tt := range sniffTests {
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ct := DetectContentType(tt.data)
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if ct != tt.contentType {
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t.Errorf("%v: DetectContentType = %q, want %q", tt.desc, ct, tt.contentType)
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}
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}
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}
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func TestServerContentType_h1(t *testing.T) { testServerContentType(t, h1Mode) }
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func TestServerContentType_h2(t *testing.T) { testServerContentType(t, h2Mode) }
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func testServerContentType(t *testing.T, h2 bool) {
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setParallel(t)
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defer afterTest(t)
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cst := newClientServerTest(t, h2, HandlerFunc(func(w ResponseWriter, r *Request) {
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i, _ := strconv.Atoi(r.FormValue("i"))
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tt := sniffTests[i]
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n, err := w.Write(tt.data)
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if n != len(tt.data) || err != nil {
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log.Fatalf("%v: Write(%q) = %v, %v want %d, nil", tt.desc, tt.data, n, err, len(tt.data))
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}
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}))
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defer cst.close()
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for i, tt := range sniffTests {
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resp, err := cst.c.Get(cst.ts.URL + "/?i=" + strconv.Itoa(i))
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if err != nil {
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t.Errorf("%v: %v", tt.desc, err)
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continue
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}
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// DetectContentType is defined to return
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// text/plain; charset=utf-8 for an empty body,
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// but as of Go 1.10 the HTTP server has been changed
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// to return no content-type at all for an empty body.
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// Adjust the expectation here.
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wantContentType := tt.contentType
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if len(tt.data) == 0 {
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wantContentType = ""
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}
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if ct := resp.Header.Get("Content-Type"); ct != wantContentType {
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t.Errorf("%v: Content-Type = %q, want %q", tt.desc, ct, wantContentType)
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}
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data, err := io.ReadAll(resp.Body)
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if err != nil {
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t.Errorf("%v: reading body: %v", tt.desc, err)
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} else if !bytes.Equal(data, tt.data) {
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t.Errorf("%v: data is %q, want %q", tt.desc, data, tt.data)
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}
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resp.Body.Close()
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}
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}
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// Issue 5953: shouldn't sniff if the handler set a Content-Type header,
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// even if it's the empty string.
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func TestServerIssue5953_h1(t *testing.T) { testServerIssue5953(t, h1Mode) }
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func TestServerIssue5953_h2(t *testing.T) { testServerIssue5953(t, h2Mode) }
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func testServerIssue5953(t *testing.T, h2 bool) {
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defer afterTest(t)
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cst := newClientServerTest(t, h2, HandlerFunc(func(w ResponseWriter, r *Request) {
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w.Header()["Content-Type"] = []string{""}
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fmt.Fprintf(w, "<html><head></head><body>hi</body></html>")
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}))
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defer cst.close()
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resp, err := cst.c.Get(cst.ts.URL)
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if err != nil {
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t.Fatal(err)
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}
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got := resp.Header["Content-Type"]
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want := []string{""}
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if !reflect.DeepEqual(got, want) {
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t.Errorf("Content-Type = %q; want %q", got, want)
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}
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resp.Body.Close()
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}
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type byteAtATimeReader struct {
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buf []byte
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}
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func (b *byteAtATimeReader) Read(p []byte) (n int, err error) {
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if len(p) < 1 {
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return 0, nil
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}
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if len(b.buf) == 0 {
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return 0, io.EOF
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}
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p[0] = b.buf[0]
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b.buf = b.buf[1:]
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return 1, nil
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}
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func TestContentTypeWithVariousSources_h1(t *testing.T) { testContentTypeWithVariousSources(t, h1Mode) }
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func TestContentTypeWithVariousSources_h2(t *testing.T) { testContentTypeWithVariousSources(t, h2Mode) }
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func testContentTypeWithVariousSources(t *testing.T, h2 bool) {
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defer afterTest(t)
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const (
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input = "\n<html>\n\t<head>\n"
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expected = "text/html; charset=utf-8"
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)
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for _, test := range []struct {
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name string
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handler func(ResponseWriter, *Request)
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}{{
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name: "write",
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handler: func(w ResponseWriter, r *Request) {
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// Write the whole input at once.
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n, err := w.Write([]byte(input))
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if int(n) != len(input) || err != nil {
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t.Errorf("w.Write(%q) = %v, %v want %d, nil", input, n, err, len(input))
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}
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},
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}, {
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name: "write one byte at a time",
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handler: func(w ResponseWriter, r *Request) {
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// Write the input one byte at a time.
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buf := []byte(input)
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for i := range buf {
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n, err := w.Write(buf[i : i+1])
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if n != 1 || err != nil {
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t.Errorf("w.Write(%q) = %v, %v want 1, nil", input, n, err)
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}
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}
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},
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}, {
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name: "copy from Reader",
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handler: func(w ResponseWriter, r *Request) {
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// Use io.Copy from a plain Reader.
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type readerOnly struct{ io.Reader }
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buf := bytes.NewBuffer([]byte(input))
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n, err := io.Copy(w, readerOnly{buf})
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if int(n) != len(input) || err != nil {
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t.Errorf("io.Copy(w, %q) = %v, %v want %d, nil", input, n, err, len(input))
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}
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},
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}, {
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name: "copy from bytes.Buffer",
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handler: func(w ResponseWriter, r *Request) {
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// Use io.Copy from a bytes.Buffer to trigger ReadFrom.
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buf := bytes.NewBuffer([]byte(input))
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n, err := io.Copy(w, buf)
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if int(n) != len(input) || err != nil {
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t.Errorf("io.Copy(w, %q) = %v, %v want %d, nil", input, n, err, len(input))
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}
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},
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}, {
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name: "copy one byte at a time",
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handler: func(w ResponseWriter, r *Request) {
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// Use io.Copy from a Reader that returns one byte at a time.
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n, err := io.Copy(w, &byteAtATimeReader{[]byte(input)})
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if int(n) != len(input) || err != nil {
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t.Errorf("io.Copy(w, %q) = %v, %v want %d, nil", input, n, err, len(input))
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}
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},
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}} {
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t.Run(test.name, func(t *testing.T) {
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cst := newClientServerTest(t, h2, HandlerFunc(test.handler))
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defer cst.close()
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resp, err := cst.c.Get(cst.ts.URL)
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if err != nil {
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t.Fatalf("Get: %v", err)
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}
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if ct := resp.Header.Get("Content-Type"); ct != expected {
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t.Errorf("Content-Type = %q, want %q", ct, expected)
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}
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if want, got := resp.Header.Get("Content-Length"), fmt.Sprint(len(input)); want != got {
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t.Errorf("Content-Length = %q, want %q", want, got)
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}
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data, err := io.ReadAll(resp.Body)
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if err != nil {
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t.Errorf("reading body: %v", err)
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} else if !bytes.Equal(data, []byte(input)) {
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t.Errorf("data is %q, want %q", data, input)
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}
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resp.Body.Close()
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})
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}
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}
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func TestSniffWriteSize_h1(t *testing.T) { testSniffWriteSize(t, h1Mode) }
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func TestSniffWriteSize_h2(t *testing.T) { testSniffWriteSize(t, h2Mode) }
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func testSniffWriteSize(t *testing.T, h2 bool) {
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setParallel(t)
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defer afterTest(t)
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cst := newClientServerTest(t, h2, HandlerFunc(func(w ResponseWriter, r *Request) {
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size, _ := strconv.Atoi(r.FormValue("size"))
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written, err := io.WriteString(w, strings.Repeat("a", size))
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if err != nil {
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t.Errorf("write of %d bytes: %v", size, err)
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return
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}
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if written != size {
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t.Errorf("write of %d bytes wrote %d bytes", size, written)
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}
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}))
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defer cst.close()
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for _, size := range []int{0, 1, 200, 600, 999, 1000, 1023, 1024, 512 << 10, 1 << 20} {
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res, err := cst.c.Get(fmt.Sprintf("%s/?size=%d", cst.ts.URL, size))
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if err != nil {
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t.Fatalf("size %d: %v", size, err)
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}
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if _, err := io.Copy(io.Discard, res.Body); err != nil {
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t.Fatalf("size %d: io.Copy of body = %v", size, err)
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}
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if err := res.Body.Close(); err != nil {
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t.Fatalf("size %d: body Close = %v", size, err)
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}
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}
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}
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