1 files changed, 228 insertions, 0 deletions
diff --git a/src/net/http/cgi/matryoshka_test.go b/src/net/http/cgi/matryoshka_test.go
new file mode 100644
index 000000000..18c4803e7
--- /dev/null
+++ b/src/net/http/cgi/matryoshka_test.go
@@ -0,0 +1,228 @@
+// 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.
+
+// Tests a Go CGI program running under a Go CGI host process.
+// Further, the two programs are the same binary, just checking
+// their environment to figure out what mode to run in.
+
+package cgi
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"runtime"
+	"testing"
+	"time"
+)
+
+// This test is a CGI host (testing host.go) that runs its own binary
+// as a child process testing the other half of CGI (child.go).
+func TestHostingOurselves(t *testing.T) {
+	if runtime.GOOS == "nacl" {
+		t.Skip("skipping on nacl")
+	}
+
+	h := &Handler{
+		Path: os.Args[0],
+		Root: "/test.go",
+		Args: []string{"-test.run=TestBeChildCGIProcess"},
+	}
+	expectedMap := map[string]string{
+		"test":                  "Hello CGI-in-CGI",
+		"param-a":               "b",
+		"param-foo":             "bar",
+		"env-GATEWAY_INTERFACE": "CGI/1.1",
+		"env-HTTP_HOST":         "example.com",
+		"env-PATH_INFO":         "",
+		"env-QUERY_STRING":      "foo=bar&a=b",
+		"env-REMOTE_ADDR":       "1.2.3.4",
+		"env-REMOTE_HOST":       "1.2.3.4",
+		"env-REQUEST_METHOD":    "GET",
+		"env-REQUEST_URI":       "/test.go?foo=bar&a=b",
+		"env-SCRIPT_FILENAME":   os.Args[0],
+		"env-SCRIPT_NAME":       "/test.go",
+		"env-SERVER_NAME":       "example.com",
+		"env-SERVER_PORT":       "80",
+		"env-SERVER_SOFTWARE":   "go",
+	}
+	replay := runCgiTest(t, h, "GET /test.go?foo=bar&a=b HTTP/1.0\nHost: example.com\n\n", expectedMap)
+
+	if expected, got := "text/html; charset=utf-8", replay.Header().Get("Content-Type"); got != expected {
+		t.Errorf("got a Content-Type of %q; expected %q", got, expected)
+	}
+	if expected, got := "X-Test-Value", replay.Header().Get("X-Test-Header"); got != expected {
+		t.Errorf("got a X-Test-Header of %q; expected %q", got, expected)
+	}
+}
+
+type customWriterRecorder struct {
+	w io.Writer
+	*httptest.ResponseRecorder
+}
+
+func (r *customWriterRecorder) Write(p []byte) (n int, err error) {
+	return r.w.Write(p)
+}
+
+type limitWriter struct {
+	w io.Writer
+	n int
+}
+
+func (w *limitWriter) Write(p []byte) (n int, err error) {
+	if len(p) > w.n {
+		p = p[:w.n]
+	}
+	if len(p) > 0 {
+		n, err = w.w.Write(p)
+		w.n -= n
+	}
+	if w.n == 0 {
+		err = errors.New("past write limit")
+	}
+	return
+}
+
+// If there's an error copying the child's output to the parent, test
+// that we kill the child.
+func TestKillChildAfterCopyError(t *testing.T) {
+	if runtime.GOOS == "nacl" {
+		t.Skip("skipping on nacl")
+	}
+
+	defer func() { testHookStartProcess = nil }()
+	proc := make(chan *os.Process, 1)
+	testHookStartProcess = func(p *os.Process) {
+		proc <- p
+	}
+
+	h := &Handler{
+		Path: os.Args[0],
+		Root: "/test.go",
+		Args: []string{"-test.run=TestBeChildCGIProcess"},
+	}
+	req, _ := http.NewRequest("GET", "http://example.com/test.cgi?write-forever=1", nil)
+	rec := httptest.NewRecorder()
+	var out bytes.Buffer
+	const writeLen = 50 << 10
+	rw := &customWriterRecorder{&limitWriter{&out, writeLen}, rec}
+
+	donec := make(chan bool, 1)
+	go func() {
+		h.ServeHTTP(rw, req)
+		donec <- true
+	}()
+
+	select {
+	case <-donec:
+		if out.Len() != writeLen || out.Bytes()[0] != 'a' {
+			t.Errorf("unexpected output: %q", out.Bytes())
+		}
+	case <-time.After(5 * time.Second):
+		t.Errorf("timeout. ServeHTTP hung and didn't kill the child process?")
+		select {
+		case p := <-proc:
+			p.Kill()
+			t.Logf("killed process")
+		default:
+			t.Logf("didn't kill process")
+		}
+	}
+}
+
+// Test that a child handler writing only headers works.
+// golang.org/issue/7196
+func TestChildOnlyHeaders(t *testing.T) {
+	if runtime.GOOS == "nacl" {
+		t.Skip("skipping on nacl")
+	}
+
+	h := &Handler{
+		Path: os.Args[0],
+		Root: "/test.go",
+		Args: []string{"-test.run=TestBeChildCGIProcess"},
+	}
+	expectedMap := map[string]string{
+		"_body": "",
+	}
+	replay := runCgiTest(t, h, "GET /test.go?no-body=1 HTTP/1.0\nHost: example.com\n\n", expectedMap)
+	if expected, got := "X-Test-Value", replay.Header().Get("X-Test-Header"); got != expected {
+		t.Errorf("got a X-Test-Header of %q; expected %q", got, expected)
+	}
+}
+
+// golang.org/issue/7198
+func Test500WithNoHeaders(t *testing.T)     { want500Test(t, "/immediate-disconnect") }
+func Test500WithNoContentType(t *testing.T) { want500Test(t, "/no-content-type") }
+func Test500WithEmptyHeaders(t *testing.T)  { want500Test(t, "/empty-headers") }
+
+func want500Test(t *testing.T, path string) {
+	h := &Handler{
+		Path: os.Args[0],
+		Root: "/test.go",
+		Args: []string{"-test.run=TestBeChildCGIProcess"},
+	}
+	expectedMap := map[string]string{
+		"_body": "",
+	}
+	replay := runCgiTest(t, h, "GET "+path+" HTTP/1.0\nHost: example.com\n\n", expectedMap)
+	if replay.Code != 500 {
+		t.Errorf("Got code %d; want 500", replay.Code)
+	}
+}
+
+type neverEnding byte
+
+func (b neverEnding) Read(p []byte) (n int, err error) {
+	for i := range p {
+		p[i] = byte(b)
+	}
+	return len(p), nil
+}
+
+// Note: not actually a test.
+func TestBeChildCGIProcess(t *testing.T) {
+	if os.Getenv("REQUEST_METHOD") == "" {
+		// Not in a CGI environment; skipping test.
+		return
+	}
+	switch os.Getenv("REQUEST_URI") {
+	case "/immediate-disconnect":
+		os.Exit(0)
+	case "/no-content-type":
+		fmt.Printf("Content-Length: 6\n\nHello\n")
+		os.Exit(0)
+	case "/empty-headers":
+		fmt.Printf("\nHello")
+		os.Exit(0)
+	}
+	Serve(http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {
+		rw.Header().Set("X-Test-Header", "X-Test-Value")
+		req.ParseForm()
+		if req.FormValue("no-body") == "1" {
+			return
+		}
+		if req.FormValue("write-forever") == "1" {
+			io.Copy(rw, neverEnding('a'))
+			for {
+				time.Sleep(5 * time.Second) // hang forever, until killed
+			}
+		}
+		fmt.Fprintf(rw, "test=Hello CGI-in-CGI\n")
+		for k, vv := range req.Form {
+			for _, v := range vv {
+				fmt.Fprintf(rw, "param-%s=%s\n", k, v)
+			}
+		}
+		for _, kv := range os.Environ() {
+			fmt.Fprintf(rw, "env-%s\n", kv)
+		}
+	}))
+	os.Exit(0)
+}