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
GetActiveEntryID(content::WebContents * web_contents)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
PermissionRequestHandler(PermissionRequestHandlerClient * client,content::WebContents * web_contents)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
~PermissionRequestHandler()39 PermissionRequestHandler::~PermissionRequestHandler() {
40 CancelAllRequests();
41 }
42
SendRequest(scoped_ptr<AwPermissionRequestDelegate> request)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 AwPermissionRequest* aw_request = new AwPermissionRequest(request.Pass());
51 requests_.push_back(
52 base::WeakPtr<AwPermissionRequest>(aw_request->GetWeakPtr()));
53 client_->OnPermissionRequest(aw_request);
54 PruneRequests();
55 }
56
CancelRequest(const GURL & origin,int64 resources)57 void PermissionRequestHandler::CancelRequest(const GURL& origin,
58 int64 resources) {
59 // The request list might have multiple requests with same origin and
60 // resources.
61 RequestIterator i = FindRequest(origin, resources);
62 while (i != requests_.end()) {
63 CancelRequest(i);
64 requests_.erase(i);
65 i = FindRequest(origin, resources);
66 }
67 }
68
PreauthorizePermission(const GURL & origin,int64 resources)69 void PermissionRequestHandler::PreauthorizePermission(const GURL& origin,
70 int64 resources) {
71 if (!resources)
72 return;
73
74 std::string key = origin.GetOrigin().spec();
75 if (key.empty()) {
76 LOG(ERROR) << "The origin of preauthorization is empty, ignore it.";
77 return;
78 }
79
80 preauthorized_permission_[key] |= resources;
81 }
82
NavigationEntryCommitted(const content::LoadCommittedDetails & details)83 void PermissionRequestHandler::NavigationEntryCommitted(
84 const content::LoadCommittedDetails& details) {
85 const content::PageTransition transition = details.entry->GetTransitionType();
86 if (details.is_navigation_to_different_page() ||
87 content::PageTransitionStripQualifier(transition) ==
88 content::PAGE_TRANSITION_RELOAD ||
89 contents_unique_id_ != details.entry->GetUniqueID()) {
90 CancelAllRequests();
91 contents_unique_id_ = details.entry->GetUniqueID();
92 }
93 }
94
95 PermissionRequestHandler::RequestIterator
FindRequest(const GURL & origin,int64 resources)96 PermissionRequestHandler::FindRequest(const GURL& origin,
97 int64 resources) {
98 RequestIterator i;
99 for (i = requests_.begin(); i != requests_.end(); ++i) {
100 if (i->get() && i->get()->GetOrigin() == origin &&
101 i->get()->GetResources() == resources) {
102 break;
103 }
104 }
105 return i;
106 }
107
CancelRequest(RequestIterator i)108 void PermissionRequestHandler::CancelRequest(RequestIterator i) {
109 if (i->get())
110 client_->OnPermissionRequestCanceled(i->get());
111 // The request's grant()/deny() could be called upon
112 // OnPermissionRequestCanceled. Delete AwPermissionRequest if it still
113 // exists.
114 if (i->get())
115 delete i->get();
116 }
117
CancelAllRequests()118 void PermissionRequestHandler::CancelAllRequests() {
119 for (RequestIterator i = requests_.begin(); i != requests_.end(); ++i)
120 CancelRequest(i);
121 }
122
PruneRequests()123 void PermissionRequestHandler::PruneRequests() {
124 for (RequestIterator i = requests_.begin(); i != requests_.end();) {
125 if (!i->get())
126 i = requests_.erase(i);
127 else
128 ++i;
129 }
130 }
131
Preauthorized(const GURL & origin,int64 resources)132 bool PermissionRequestHandler::Preauthorized(const GURL& origin,
133 int64 resources) {
134 std::map<std::string, int64>::iterator i =
135 preauthorized_permission_.find(origin.GetOrigin().spec());
136
137 return i != preauthorized_permission_.end() &&
138 (resources & i->second) == resources;
139 }
140
141 } // namespace android_webivew
142