mirror of https://github.com/perkeep/perkeep.git
140 lines
3.5 KiB
Go
140 lines
3.5 KiB
Go
/*
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Copyright 2011 Google Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package server
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import (
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"encoding/json"
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"fmt"
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"net/http"
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"time"
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"camlistore.org/pkg/auth"
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"camlistore.org/pkg/blobserver"
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"camlistore.org/pkg/jsonconfig"
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"camlistore.org/pkg/search"
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)
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// RootHandler handles serving the about/splash page.
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type RootHandler struct {
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// Stealth determines whether we hide from non-authenticated
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// clients.
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Stealth bool
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// URL prefixes (path or full URL) to the primary blob and
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// search root.
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BlobRoot string
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SearchRoot string
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Storage blobserver.Storage // of BlobRoot, or nil
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Search *search.Handler // of SearchRoot, or nil
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ui *UIHandler // or nil, if none configured
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}
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func init() {
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blobserver.RegisterHandlerConstructor("root", newRootFromConfig)
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}
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func newRootFromConfig(ld blobserver.Loader, conf jsonconfig.Obj) (h http.Handler, err error) {
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root := &RootHandler{
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BlobRoot: conf.OptionalString("blobRoot", ""),
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SearchRoot: conf.OptionalString("searchRoot", ""),
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}
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root.Stealth = conf.OptionalBool("stealth", false)
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if err = conf.Validate(); err != nil {
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return
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}
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if root.BlobRoot != "" {
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bs, err := ld.GetStorage(root.BlobRoot)
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if err != nil {
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return nil, fmt.Errorf("Root handler's blobRoot of %q error: %v", root.BlobRoot, err)
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}
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root.Storage = bs
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}
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if root.SearchRoot != "" {
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h, _ := ld.GetHandler(root.SearchRoot)
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root.Search = h.(*search.Handler)
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}
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return root, nil
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}
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func (rh *RootHandler) registerUIHandler(h *UIHandler) {
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rh.ui = h
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}
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func (rh *RootHandler) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
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if wantsDiscovery(req) {
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if auth.IsAuthorized(req) {
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rh.serveDiscovery(rw, req)
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return
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}
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if !rh.Stealth {
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http.Error(rw, "Unauthorized", http.StatusUnauthorized)
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}
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return
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}
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if rh.Stealth {
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return
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}
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configLink := ""
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if auth.LocalhostAuthorized(req) {
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configLink = "<p>If you're coming from localhost, hit <a href='/setup'>/setup</a>.</p>"
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}
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fmt.Fprintf(rw, "<html><body>This is camlistored, a "+
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"<a href='http://camlistore.org'>Camlistore</a> server."+
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"%s</body></html>\n", configLink)
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}
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func (rh *RootHandler) serveDiscovery(rw http.ResponseWriter, req *http.Request) {
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m := map[string]interface{}{
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"blobRoot": rh.BlobRoot,
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"searchRoot": rh.SearchRoot,
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}
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if gener, ok := rh.Storage.(blobserver.Generationer); ok {
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initTime, gen, err := gener.StorageGeneration()
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if err != nil {
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m["storageGenerationError"] = err.Error()
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} else {
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m["storageInitTime"] = initTime.UTC().Format(time.RFC3339)
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m["storageGeneration"] = gen
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}
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}
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if rh.ui != nil {
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rh.ui.populateDiscoveryMap(m)
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}
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discoveryHelper(rw, req, m)
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}
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func discoveryHelper(rw http.ResponseWriter, req *http.Request, m map[string]interface{}) {
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rw.Header().Set("Content-Type", "text/javascript")
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inCb := false
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if cb := req.FormValue("cb"); identPattern.MatchString(cb) {
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fmt.Fprintf(rw, "%s(", cb)
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inCb = true
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}
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bytes, _ := json.MarshalIndent(m, "", " ")
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rw.Write(bytes)
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if inCb {
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rw.Write([]byte{')'})
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}
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}
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