android_webview/native/permission/permission_request_handler.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "android_webview/native/permission/permission_request_handler.h"
   6
   7 #include "android_webview/native/permission/aw_permission_request.h"
   8 #include "android_webview/native/permission/aw_permission_request_delegate.h"
   9 #include "android_webview/native/permission/permission_request_handler_client.h"
  10 #include "base/android/scoped_java_ref.h"
  11 #include "base/bind.h"
  12 #include "content/public/browser/navigation_details.h"
  13 #include "content/public/browser/navigation_entry.h"
  14 #include "content/public/browser/web_contents.h"
  15
  16 using base::android::ScopedJavaLocalRef;
  17
  18 namespace android_webview {
  19
  20 namespace {
  21
  22 int GetActiveEntryID(content::WebContents* web_contents) {
  23   if (!web_contents) return 0;
  24
  25   content::NavigationEntry* active_entry =
  26       web_contents->GetController().GetActiveEntry();
  27   return active_entry ? active_entry->GetUniqueID() : 0;
  28 }
  29
  30 }  // namespace
  31
  32 PermissionRequestHandler::PermissionRequestHandler(
  33     PermissionRequestHandlerClient* client, content::WebContents* web_contents)
  34     : content::WebContentsObserver(web_contents),
  35       client_(client),
  36       contents_unique_id_(GetActiveEntryID(web_contents)) {
  37 }
  38
  39 PermissionRequestHandler::~PermissionRequestHandler() {
  40   CancelAllRequests();
  41 }
  42
  43 void PermissionRequestHandler::SendRequest(
  44     scoped_ptr<AwPermissionRequestDelegate> request) {
  45   if (Preauthorized(request->GetOrigin(), request->GetResources())) {
  46     request->NotifyRequestResult(true);
  47     return;
  48   }
  49
  50   base::WeakPtr<AwPermissionRequest> weak_request;
  51   base::android::ScopedJavaLocalRef<jobject> java_peer =
  52       AwPermissionRequest::Create(request.Pass(), &weak_request);
  53   requests_.push_back(weak_request);
  54   client_->OnPermissionRequest(java_peer, weak_request.get());
  55   PruneRequests();
  56 }
  57
  58 void PermissionRequestHandler::CancelRequest(const GURL& origin,
  59                                              int64 resources) {
  60   // The request list might have multiple requests with same origin and
  61   // resources.
  62   RequestIterator i = FindRequest(origin, resources);
  63   while (i != requests_.end()) {
  64     CancelRequestInternal(i);
  65     requests_.erase(i);
  66     i = FindRequest(origin, resources);
  67   }
  68 }
  69
  70 void PermissionRequestHandler::PreauthorizePermission(const GURL& origin,
  71                                                       int64 resources) {
  72   if (!resources)
  73     return;
  74
  75   std::string key = origin.GetOrigin().spec();
  76   if (key.empty()) {
  77     LOG(ERROR) << "The origin of preauthorization is empty, ignore it.";
  78     return;
  79   }
  80
  81   preauthorized_permission_[key] |= resources;
  82 }
  83
  84 void PermissionRequestHandler::NavigationEntryCommitted(
  85     const content::LoadCommittedDetails& details) {
  86   const ui::PageTransition transition = details.entry->GetTransitionType();
  87   if (details.is_navigation_to_different_page() ||
  88       ui::PageTransitionStripQualifier(transition) ==
  89       ui::PAGE_TRANSITION_RELOAD ||
  90       contents_unique_id_ != details.entry->GetUniqueID()) {
  91     CancelAllRequests();
  92     contents_unique_id_ = details.entry->GetUniqueID();
  93   }
  94 }
  95
  96 PermissionRequestHandler::RequestIterator
  97 PermissionRequestHandler::FindRequest(const GURL& origin,
  98                                       int64 resources) {
  99   RequestIterator i;
 100   for (i = requests_.begin(); i != requests_.end(); ++i) {
 101     if (i->get() && i->get()->GetOrigin() == origin &&
 102         i->get()->GetResources() == resources) {
 103       break;
 104     }
 105   }
 106   return i;
 107 }
 108
 109 void PermissionRequestHandler::CancelRequestInternal(RequestIterator i) {
 110   AwPermissionRequest* request = i->get();
 111   if (request) {
 112     client_->OnPermissionRequestCanceled(request);
 113     request->CancelAndDelete();
 114   }
 115 }
 116
 117 void PermissionRequestHandler::CancelAllRequests() {
 118   for (RequestIterator i = requests_.begin(); i != requests_.end(); ++i)
 119     CancelRequestInternal(i);
 120 }
 121
 122 void PermissionRequestHandler::PruneRequests() {
 123   for (RequestIterator i = requests_.begin(); i != requests_.end();) {
 124     if (!i->get())
 125       i = requests_.erase(i);
 126     else
 127       ++i;
 128   }
 129 }
 130
 131 bool PermissionRequestHandler::Preauthorized(const GURL& origin,
 132                                               int64 resources) {
 133   std::map<std::string, int64>::iterator i =
 134       preauthorized_permission_.find(origin.GetOrigin().spec());
 135
 136   return i != preauthorized_permission_.end() &&
 137       (resources & i->second) == resources;
 138 }
 139
 140 }  // namespace android_webivew