WebCore fails to compile with -Werror=maybe-uninitialized on GCC 4.8.0
[WebKit-https.git] / Source / WebCore / inspector / InspectorDOMStorageAgent.cpp
1 /*
2  * Copyright (C) 2010 Google Inc. All rights reserved.
3  * Copyright (C) 2013 Samsung Electronics. All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  *
9  * 1.  Redistributions of source code must retain the above copyright
10  *     notice, this list of conditions and the following disclaimer.
11  * 2.  Redistributions in binary form must reproduce the above copyright
12  *     notice, this list of conditions and the following disclaimer in the
13  *     documentation and/or other materials provided with the distribution.
14  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
15  *     its contributors may be used to endorse or promote products derived
16  *     from this software without specific prior written permission.
17  *
18  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
19  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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23  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
25  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28  */
29
30 #include "config.h"
31
32 #if ENABLE(INSPECTOR)
33
34 #include "InspectorDOMStorageAgent.h"
35
36 #include "Database.h"
37 #include "DOMWindow.h"
38 #include "Document.h"
39 #include "ExceptionCode.h"
40 #include "ExceptionCodeDescription.h"
41 #include "Frame.h"
42 #include "InspectorFrontend.h"
43 #include "InspectorPageAgent.h"
44 #include "InspectorState.h"
45 #include "InspectorValues.h"
46 #include "InstrumentingAgents.h"
47 #include "Page.h"
48 #include "PageGroup.h"
49 #include "SecurityOrigin.h"
50 #include "Storage.h"
51 #include "StorageArea.h"
52 #include "StorageNamespace.h"
53 #include "VoidCallback.h"
54
55 #include <wtf/Vector.h>
56
57 namespace WebCore {
58
59 namespace DOMStorageAgentState {
60 static const char domStorageAgentEnabled[] = "domStorageAgentEnabled";
61 };
62
63 InspectorDOMStorageAgent::InspectorDOMStorageAgent(InstrumentingAgents* instrumentingAgents, InspectorPageAgent* pageAgent, InspectorCompositeState* state)
64     : InspectorBaseAgent<InspectorDOMStorageAgent>("DOMStorage", instrumentingAgents, state)
65     , m_pageAgent(pageAgent)
66     , m_frontend(0)
67 {
68     m_instrumentingAgents->setInspectorDOMStorageAgent(this);
69 }
70
71 InspectorDOMStorageAgent::~InspectorDOMStorageAgent()
72 {
73     m_instrumentingAgents->setInspectorDOMStorageAgent(0);
74     m_instrumentingAgents = 0;
75 }
76
77 void InspectorDOMStorageAgent::setFrontend(InspectorFrontend* frontend)
78 {
79     m_frontend = frontend;
80 }
81
82 void InspectorDOMStorageAgent::clearFrontend()
83 {
84     m_frontend = 0;
85     disable(0);
86 }
87
88 bool InspectorDOMStorageAgent::isEnabled() const
89 {
90     return m_state->getBoolean(DOMStorageAgentState::domStorageAgentEnabled);
91 }
92
93 void InspectorDOMStorageAgent::enable(ErrorString*)
94 {
95     m_state->setBoolean(DOMStorageAgentState::domStorageAgentEnabled, true);
96 }
97
98 void InspectorDOMStorageAgent::disable(ErrorString*)
99 {
100     m_state->setBoolean(DOMStorageAgentState::domStorageAgentEnabled, false);
101 }
102
103 void InspectorDOMStorageAgent::getDOMStorageItems(ErrorString* errorString, const RefPtr<InspectorObject>& storageId, RefPtr<TypeBuilder::Array<TypeBuilder::Array<String> > >& items)
104 {
105     Frame* frame;
106     RefPtr<StorageArea> storageArea = findStorageArea(errorString, storageId, frame);
107     if (!storageArea) {
108         if (errorString)
109             *errorString = "No StorageArea for given storageId";
110         return;
111     }
112
113     RefPtr<TypeBuilder::Array<TypeBuilder::Array<String> > > storageItems = TypeBuilder::Array<TypeBuilder::Array<String> >::create();
114
115     for (unsigned i = 0; i < storageArea->length(); ++i) {
116         String key = storageArea->key(i);
117         String value = storageArea->item(key);
118
119         RefPtr<TypeBuilder::Array<String> > entry = TypeBuilder::Array<String>::create();
120         entry->addItem(key);
121         entry->addItem(value);
122         storageItems->addItem(entry.release());
123     }
124
125     items = storageItems.release();
126 }
127
128 void InspectorDOMStorageAgent::setDOMStorageItem(ErrorString* errorString, const RefPtr<InspectorObject>& storageId, const String& key, const String& value)
129 {
130     Frame* frame;
131     RefPtr<StorageArea> storageArea = findStorageArea(0, storageId, frame);
132     if (!storageArea) {
133         *errorString = "Storage not found";
134         return;
135     }
136
137     bool quotaException = false;
138     storageArea->setItem(frame, key, value, quotaException);
139     if (quotaException)
140         *errorString = ExceptionCodeDescription(QUOTA_EXCEEDED_ERR).name;
141 }
142
143 void InspectorDOMStorageAgent::removeDOMStorageItem(ErrorString* errorString, const RefPtr<InspectorObject>& storageId, const String& key)
144 {
145     Frame* frame;
146     RefPtr<StorageArea> storageArea = findStorageArea(0, storageId, frame);
147     if (!storageArea) {
148         *errorString = "Storage not found";
149         return;
150     }
151
152     storageArea->removeItem(frame, key);
153 }
154
155 String InspectorDOMStorageAgent::storageId(Storage* storage)
156 {
157     ASSERT(storage);
158     Document* document = storage->frame()->document();
159     ASSERT(document);
160     DOMWindow* window = document->domWindow();
161     ASSERT(window);
162     RefPtr<SecurityOrigin> securityOrigin = document->securityOrigin();
163     bool isLocalStorage = window->optionalLocalStorage() == storage;
164     return storageId(securityOrigin.get(), isLocalStorage)->toJSONString();
165 }
166
167 PassRefPtr<TypeBuilder::DOMStorage::StorageId> InspectorDOMStorageAgent::storageId(SecurityOrigin* securityOrigin, bool isLocalStorage)
168 {
169     return TypeBuilder::DOMStorage::StorageId::create()
170         .setSecurityOrigin(securityOrigin->toRawString())
171         .setIsLocalStorage(isLocalStorage).release();
172 }
173
174 void InspectorDOMStorageAgent::didDispatchDOMStorageEvent(const String& key, const String& oldValue, const String& newValue, StorageType storageType, SecurityOrigin* securityOrigin, Page*)
175 {
176     if (!m_frontend || !isEnabled())
177         return;
178
179     RefPtr<TypeBuilder::DOMStorage::StorageId> id = storageId(securityOrigin, storageType == LocalStorage);
180
181     if (key.isNull())
182         m_frontend->domstorage()->domStorageItemsCleared(id);
183     else if (newValue.isNull())
184         m_frontend->domstorage()->domStorageItemRemoved(id, key);
185     else if (oldValue.isNull())
186         m_frontend->domstorage()->domStorageItemAdded(id, key, newValue);
187     else
188         m_frontend->domstorage()->domStorageItemUpdated(id, key, oldValue, newValue);
189 }
190
191 PassRefPtr<StorageArea> InspectorDOMStorageAgent::findStorageArea(ErrorString* errorString, const RefPtr<InspectorObject>& storageId, Frame*& targetFrame)
192 {
193     String securityOrigin;
194     bool isLocalStorage = false;
195     bool success = storageId->getString("securityOrigin", &securityOrigin);
196     if (success)
197         success = storageId->getBoolean("isLocalStorage", &isLocalStorage);
198     if (!success) {
199         if (errorString)
200             *errorString = "Invalid storageId format";
201         targetFrame = 0;
202         return 0;
203     }
204
205     targetFrame = m_pageAgent->findFrameWithSecurityOrigin(securityOrigin);
206     if (!targetFrame) {
207         if (errorString)
208             *errorString = "Frame not found for the given security origin";
209         return 0;
210     }
211
212     Page* page = m_pageAgent->page();
213     if (isLocalStorage)
214         return page->group().localStorage()->storageArea(targetFrame->document()->securityOrigin());
215     return page->sessionStorage()->storageArea(targetFrame->document()->securityOrigin());
216 }
217
218 } // namespace WebCore
219
220 #endif // ENABLE(INSPECTOR)