Golang camlistore-org-pkg-httputil.PathSuffix类(方法)实例源码

func (sh *Handler) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
	suffix := httputil.PathSuffix(req)

	handlers := getHandler
	switch {
	case httputil.IsGet(req):
		// use default from above
	case req.Method == "POST":
		handlers = postHandler
	default:
		handlers = nil
	}
	fn := handlers[strings.TrimPrefix(suffix, "camli/search/")]
	if fn != nil {
		fn(sh, rw, req)
		return
	}

	// TODO: discovery for the endpoints & better error message with link to discovery info
	ret := camtypes.SearchErrorResponse{
		Error:     "Unsupported search path or method",
		ErrorType: "input",
	}
	httputil.ReturnJSON(rw, &ret)
}

func wantsClosure(req *http.Request) bool {
	if req.Method == "GET" {
		suffix := httputil.PathSuffix(req)
		return closurePattern.MatchString(suffix)
	}
	return false
}

func getSuffixMatches(req *http.Request, pattern *regexp.Regexp) bool {
	if httputil.IsGet(req) {
		suffix := httputil.PathSuffix(req)
		return pattern.MatchString(suffix)
	}
	return false
}

func (h *Handler) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
	base := httputil.PathBase(req)
	subPath := httputil.PathSuffix(req)
	switch req.Method {
	case "GET", "HEAD":
		switch subPath {
		case "":
			http.Redirect(rw, req, base+"camli/sig/discovery", http.StatusFound)
			return
		case h.pubKeyBlobRefServeSuffix:
			h.pubKeyHandler.ServeHTTP(rw, req)
			return
		case "camli/sig/sign":
			fallthrough
		case "camli/sig/verify":
			http.Error(rw, "POST required", 400)
			return
		case "camli/sig/discovery":
			httputil.ReturnJSON(rw, h.DiscoveryMap(base))
			return
		}
	case "POST":
		switch subPath {
		case "camli/sig/sign":
			h.handleSign(rw, req)
			return
		case "camli/sig/verify":
			h.handleVerify(rw, req)
			return
		}
	}
	http.Error(rw, "Unsupported path or method.", http.StatusBadRequest)
}

func (ui *UIHandler) serveDownload(rw http.ResponseWriter, req *http.Request) {
	if ui.root.Storage == nil {
		http.Error(rw, "No BlobRoot configured", 500)
		return
	}

	suffix := httputil.PathSuffix(req)
	m := downloadPattern.FindStringSubmatch(suffix)
	if m == nil {
		httputil.ErrorRouting(rw, req)
		return
	}

	fbr, ok := blob.Parse(m[1])
	if !ok {
		http.Error(rw, "Invalid blobref", 400)
		return
	}

	dh := &DownloadHandler{
		Fetcher: ui.root.Storage,
		Cache:   ui.Cache,
	}
	dh.ServeHTTP(rw, req, fbr)
}

func wantsClosure(req *http.Request) bool {
	if httputil.IsGet(req) {
		suffix := httputil.PathSuffix(req)
		return closurePattern.MatchString(suffix)
	}
	return false
}

func (ui *UIHandler) serveFileTree(rw http.ResponseWriter, req *http.Request) {
	if ui.root.Storage == nil {
		http.Error(rw, "No BlobRoot configured", 500)
		return
	}

	suffix := httputil.PathSuffix(req)
	m := treePattern.FindStringSubmatch(suffix)
	if m == nil {
		httputil.ErrorRouting(rw, req)
		return
	}

	blobref, ok := blob.Parse(m[1])
	if !ok {
		http.Error(rw, "Invalid blobref", 400)
		return
	}

	fth := &FileTreeHandler{
		Fetcher: ui.root.Storage,
		file:    blobref,
	}
	fth.ServeHTTP(rw, req)
}

// ServeHTTP serves:
//   http://host/importer/
//   http://host/importer/twitter/
//   http://host/importer/twitter/callback
//   http://host/importer/twitter/sha1-abcabcabcabcabc (single account)
func (h *Host) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	suffix := httputil.PathSuffix(r)
	seg := strings.Split(suffix, "/")
	if suffix == "" || len(seg) == 0 {
		h.serveImportersRoot(w, r)
		return
	}
	impName := seg[0]

	imp, ok := h.imp[impName]
	if !ok {
		http.NotFound(w, r)
		return
	}

	if len(seg) == 1 || seg[1] == "" {
		h.serveImporter(w, r, imp)
		return
	}
	if seg[1] == "callback" {
		h.serveImporterAcctCallback(w, r, imp)
		return
	}
	acctRef, ok := blob.Parse(seg[1])
	if !ok {
		http.NotFound(w, r)
		return
	}
	h.serveImporterAccount(w, r, imp, acctRef)
}

func (h *shareHandler) serveHTTP(rw http.ResponseWriter, req *http.Request) error {
	var err error
	pathSuffix := httputil.PathSuffix(req)
	if len(pathSuffix) == 0 {
		// This happens during testing because we don't go through PrefixHandler
		pathSuffix = strings.TrimLeft(req.URL.Path, "/")
	}
	pathParts := strings.SplitN(pathSuffix, "/", 2)
	blobRef, ok := blob.Parse(pathParts[0])
	if !ok {
		err = &shareError{code: invalidURL, response: badRequest,
			message: fmt.Sprintf("Malformed share pathSuffix: %s", pathSuffix)}
	} else {
		err = handleGetViaSharing(rw, req, blobRef, h.fetcher)
	}
	if se, ok := err.(*shareError); ok {
		switch se.response {
		case badRequest:
			httputil.BadRequestError(rw, err.Error())
		case unauthorizedRequest:
			log.Print(err)
			auth.SendUnauthorized(rw, req)
		}
	}
	return err
}

func (h *shareHandler) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
	blobRef, ok := blob.Parse(httputil.PathSuffix(req))
	if !ok {
		http.Error(rw, "Malformed share URL.", 400)
		return
	}
	handleGetViaSharing(rw, req, blobRef, h.fetcher)
}

func (h *shareHandler) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
	pathSuffix := httputil.PathSuffix(req)
	pathParts := strings.SplitN(pathSuffix, "/", 2)
	blobRef, ok := blob.Parse(pathParts[0])
	if !ok {
		http.Error(rw, fmt.Sprintf("Malformed share pathSuffix: %s", pathSuffix), 400)
		return
	}
	handleGetViaSharing(rw, req, blobRef, h.fetcher)
}

func (ui *UIHandler) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
	suffix := httputil.PathSuffix(req)

	rw.Header().Set("Vary", "Accept")
	switch {
	case wantsDiscovery(req):
		ui.root.serveDiscovery(rw, req)
	case wantsUploadHelper(req):
		ui.serveUploadHelper(rw, req)
	case strings.HasPrefix(suffix, "download/"):
		ui.serveDownload(rw, req)
	case strings.HasPrefix(suffix, "thumbnail/"):
		ui.serveThumbnail(rw, req)
	case strings.HasPrefix(suffix, "tree/"):
		ui.serveFileTree(rw, req)
	case strings.HasPrefix(suffix, "qr/"):
		ui.serveQR(rw, req)
	case getSuffixMatches(req, closurePattern):
		ui.serveClosure(rw, req)
	case getSuffixMatches(req, lessPattern):
		ui.serveFromDiskOrStatic(rw, req, lessPattern, ui.fileLessHandler, lessstatic.Files)
	case getSuffixMatches(req, reactPattern):
		ui.serveFromDiskOrStatic(rw, req, reactPattern, ui.fileReactHandler, reactstatic.Files)
	case getSuffixMatches(req, glitchPattern):
		ui.serveFromDiskOrStatic(rw, req, glitchPattern, ui.fileGlitchHandler, glitchstatic.Files)
	case getSuffixMatches(req, fontawesomePattern):
		ui.serveFromDiskOrStatic(rw, req, fontawesomePattern, ui.fileFontawesomeHandler, fontawesomestatic.Files)
	default:
		file := ""
		if m := staticFilePattern.FindStringSubmatch(suffix); m != nil {
			file = m[1]
		} else {
			switch {
			case wantsBlobRef(req):
				file = "index.html"
			case wantsPermanode(req):
				file = "permanode.html"
			case wantsBlobInfo(req):
				file = "blobinfo.html"
			case wantsFileTreePage(req):
				file = "filetree.html"
			case req.URL.Path == httputil.PathBase(req):
				file = "index.html"
			default:
				http.Error(rw, "Illegal URL.", http.StatusNotFound)
				return
			}
		}
		if file == "deps.js" {
			serveDepsJS(rw, req, ui.uiDir)
			return
		}
		ServeStaticFile(rw, req, uistatic.Files, file)
	}
}

func (sh *StatusHandler) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
	suffix := httputil.PathSuffix(req)
	if req.Method != "GET" {
		http.Error(rw, "Illegal URL.", http.StatusMethodNotAllowed)
		return
	}
	if suffix == "status.json" {
		sh.serveStatus(rw, req)
		return
	}
	http.Error(rw, "Illegal URL.", 404)
}

func (hh *HelpHandler) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
	suffix := httputil.PathSuffix(req)
	if !httputil.IsGet(req) {
		http.Error(rw, "Illegal help method.", http.StatusMethodNotAllowed)
		return
	}
	switch suffix {
	case "":
		hh.serveHelpHTML(rw, req)
	default:
		http.Error(rw, "Illegal help path.", http.StatusNotFound)
	}
}

func (a *Handler) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
	if camhttputil.PathSuffix(req) == "config.json" {
		if a.auth.AllowedAccess(req)&auth.OpGet == auth.OpGet {
			camhttputil.ReturnJSON(rw, a.appConfig)
		} else {
			auth.SendUnauthorized(rw, req)
		}
		return
	}
	if a.proxy == nil {
		http.Error(rw, "no proxy for the app", 500)
		return
	}
	a.proxy.ServeHTTP(rw, req)
}

func (sh *StatusHandler) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
	suffix := httputil.PathSuffix(req)
	if !httputil.IsGet(req) {
		http.Error(rw, "Illegal status method.", http.StatusMethodNotAllowed)
		return
	}
	switch suffix {
	case "status.json":
		sh.serveStatusJSON(rw, req)
	case "":
		sh.serveStatusHTML(rw, req)
	default:
		http.Error(rw, "Illegal status path.", 404)
	}
}

// serveFromDiskOrStatic matches rx against req's path and serves the match either from disk (if non-nil) or from static (embedded in the binary).
func (ui *UIHandler) serveFromDiskOrStatic(rw http.ResponseWriter, req *http.Request, rx *regexp.Regexp, disk http.Handler, static *fileembed.Files) {
	suffix := httputil.PathSuffix(req)
	m := rx.FindStringSubmatch(suffix)
	if m == nil {
		panic("Caller should verify that rx matches")
	}
	file := m[1]
	if disk != nil {
		req.URL.Path = "/" + file
		disk.ServeHTTP(rw, req)
	} else {
		serveStaticFile(rw, req, static, file)
	}

}

func (ui *UIHandler) serveClosure(rw http.ResponseWriter, req *http.Request) {
	suffix := httputil.PathSuffix(req)
	if ui.closureHandler == nil {
		log.Printf("%v not served: closure handler is nil", suffix)
		http.NotFound(rw, req)
		return
	}
	m := closurePattern.FindStringSubmatch(suffix)
	if m == nil {
		httputil.ErrorRouting(rw, req)
		return
	}
	req.URL.Path = "/" + m[1]
	ui.closureHandler.ServeHTTP(rw, req)
}

func (ui *UIHandler) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
	suffix := httputil.PathSuffix(req)

	rw.Header().Set("Vary", "Accept")
	switch {
	case wantsDiscovery(req):
		ui.root.serveDiscovery(rw, req)
	case wantsUploadHelper(req):
		ui.serveUploadHelper(rw, req)
	case strings.HasPrefix(suffix, "download/"):
		ui.serveDownload(rw, req)
	case strings.HasPrefix(suffix, "thumbnail/"):
		ui.serveThumbnail(rw, req)
	case strings.HasPrefix(suffix, "tree/"):
		ui.serveFileTree(rw, req)
	case wantsClosure(req):
		ui.serveClosure(rw, req)
	default:
		file := ""
		if m := staticFilePattern.FindStringSubmatch(suffix); m != nil {
			file = m[1]
		} else {
			switch {
			case wantsPermanode(req):
				file = "permanode.html"
			case wantsBlobInfo(req):
				file = "blobinfo.html"
			case wantsFileTreePage(req):
				file = "filetree.html"
			case req.URL.Path == httputil.PathBase(req):
				file = "index.html"
			default:
				http.Error(rw, "Illegal URL.", http.StatusNotFound)
				return
			}
		}
		if file == "deps.js" {
			envVar := uiFiles.OverrideEnv
			if envVar != "" && os.Getenv(envVar) != "" {
				serveDepsJS(rw, req)
				return
			}
		}
		serveStaticFile(rw, req, uiFiles, file)
	}
}

func (hh *HelpHandler) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
	suffix := httputil.PathSuffix(req)
	if !httputil.IsGet(req) {
		http.Error(rw, "Illegal help method.", http.StatusMethodNotAllowed)
		return
	}
	switch suffix {
	case "":
		if clientConfig := req.FormValue("clientConfig"); clientConfig != "" {
			if clientConfigOnly, err := strconv.ParseBool(clientConfig); err == nil && clientConfigOnly {
				httputil.ReturnJSON(rw, hh.clientConfig)
				return
			}
		}
		hh.serveHelpHTML(rw, req)
	default:
		http.Error(rw, "Illegal help path.", http.StatusNotFound)
	}
}