github.com/Andyfoo/golang/x/net@v0.0.0-20190901054642-57c1bf301704/webdav/litmus_test_server.go (about)

     1  // Copyright 2015 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  // +build ignore
     6  
     7  /*
     8  This program is a server for the WebDAV 'litmus' compliance test at
     9  http://www.webdav.org/neon/litmus/
    10  To run the test:
    11  
    12  go run litmus_test_server.go
    13  
    14  and separately, from the downloaded litmus-xxx directory:
    15  
    16  make URL=http://localhost:9999/ check
    17  */
    18  package main
    19  
    20  import (
    21  	"flag"
    22  	"fmt"
    23  	"log"
    24  	"net/http"
    25  	"net/url"
    26  
    27  	"github.com/Andyfoo/golang/x/net/webdav"
    28  )
    29  
    30  var port = flag.Int("port", 9999, "server port")
    31  
    32  func main() {
    33  	flag.Parse()
    34  	log.SetFlags(0)
    35  	h := &webdav.Handler{
    36  		FileSystem: webdav.NewMemFS(),
    37  		LockSystem: webdav.NewMemLS(),
    38  		Logger: func(r *http.Request, err error) {
    39  			litmus := r.Header.Get("X-Litmus")
    40  			if len(litmus) > 19 {
    41  				litmus = litmus[:16] + "..."
    42  			}
    43  
    44  			switch r.Method {
    45  			case "COPY", "MOVE":
    46  				dst := ""
    47  				if u, err := url.Parse(r.Header.Get("Destination")); err == nil {
    48  					dst = u.Path
    49  				}
    50  				o := r.Header.Get("Overwrite")
    51  				log.Printf("%-20s%-10s%-30s%-30so=%-2s%v", litmus, r.Method, r.URL.Path, dst, o, err)
    52  			default:
    53  				log.Printf("%-20s%-10s%-30s%v", litmus, r.Method, r.URL.Path, err)
    54  			}
    55  		},
    56  	}
    57  
    58  	// The next line would normally be:
    59  	//	http.Handle("/", h)
    60  	// but we wrap that HTTP handler h to cater for a special case.
    61  	//
    62  	// The propfind_invalid2 litmus test case expects an empty namespace prefix
    63  	// declaration to be an error. The FAQ in the webdav litmus test says:
    64  	//
    65  	// "What does the "propfind_invalid2" test check for?...
    66  	//
    67  	// If a request was sent with an XML body which included an empty namespace
    68  	// prefix declaration (xmlns:ns1=""), then the server must reject that with
    69  	// a "400 Bad Request" response, as it is invalid according to the XML
    70  	// Namespace specification."
    71  	//
    72  	// On the other hand, the Go standard library's encoding/xml package
    73  	// accepts an empty xmlns namespace, as per the discussion at
    74  	// https://github.com/golang/go/issues/8068
    75  	//
    76  	// Empty namespaces seem disallowed in the second (2006) edition of the XML
    77  	// standard, but allowed in a later edition. The grammar differs between
    78  	// http://www.w3.org/TR/2006/REC-xml-names-20060816/#ns-decl and
    79  	// http://www.w3.org/TR/REC-xml-names/#dt-prefix
    80  	//
    81  	// Thus, we assume that the propfind_invalid2 test is obsolete, and
    82  	// hard-code the 400 Bad Request response that the test expects.
    83  	http.Handle("/", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
    84  		if r.Header.Get("X-Litmus") == "props: 3 (propfind_invalid2)" {
    85  			http.Error(w, "400 Bad Request", http.StatusBadRequest)
    86  			return
    87  		}
    88  		h.ServeHTTP(w, r)
    89  	}))
    90  
    91  	addr := fmt.Sprintf(":%d", *port)
    92  	log.Printf("Serving %v", addr)
    93  	log.Fatal(http.ListenAndServe(addr, nil))
    94  }