ApplicationCache.cpp revision cad810f21b803229eb11403f9209855525a25d57 
1/*
2 * Copyright (C) 2008 Apple Inc. All Rights Reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "ApplicationCache.h"
28
29#if ENABLE(OFFLINE_WEB_APPLICATIONS)
30
31#include "ApplicationCacheGroup.h"
32#include "ApplicationCacheResource.h"
33#include "ApplicationCacheStorage.h"
34#include "ResourceRequest.h"
35#include <wtf/text/CString.h>
36#include <stdio.h>
37
38namespace WebCore {
39
40ApplicationCache::ApplicationCache()
41    : m_group(0)
42    , m_manifest(0)
43    , m_estimatedSizeInStorage(0)
44    , m_storageID(0)
45{
46}
47
48ApplicationCache::~ApplicationCache()
49{
50    if (m_group && !m_group->isCopy())
51        m_group->cacheDestroyed(this);
52}
53
54void ApplicationCache::setGroup(ApplicationCacheGroup* group)
55{
56    ASSERT(!m_group || group == m_group);
57    m_group = group;
58}
59
60bool ApplicationCache::isComplete() const
61{
62    return !m_group->cacheIsBeingUpdated(this);
63}
64
65void ApplicationCache::setManifestResource(PassRefPtr<ApplicationCacheResource> manifest)
66{
67    ASSERT(manifest);
68    ASSERT(!m_manifest);
69    ASSERT(manifest->type() & ApplicationCacheResource::Manifest);
70
71    m_manifest = manifest.get();
72
73    addResource(manifest);
74}
75
76void ApplicationCache::addResource(PassRefPtr<ApplicationCacheResource> resource)
77{
78    ASSERT(resource);
79
80    const String& url = resource->url();
81
82    ASSERT(!m_resources.contains(url));
83
84    if (m_storageID) {
85        ASSERT(!resource->storageID());
86        ASSERT(resource->type() & ApplicationCacheResource::Master);
87
88        // Add the resource to the storage.
89        cacheStorage().store(resource.get(), this);
90    }
91
92    m_estimatedSizeInStorage += resource->estimatedSizeInStorage();
93
94    m_resources.set(url, resource);
95}
96
97unsigned ApplicationCache::removeResource(const String& url)
98{
99    HashMap<String, RefPtr<ApplicationCacheResource> >::iterator it = m_resources.find(url);
100    if (it == m_resources.end())
101        return 0;
102
103    // The resource exists, get its type so we can return it.
104    unsigned type = it->second->type();
105
106    m_resources.remove(it);
107
108    m_estimatedSizeInStorage -= it->second->estimatedSizeInStorage();
109
110    return type;
111}
112
113ApplicationCacheResource* ApplicationCache::resourceForURL(const String& url)
114{
115    ASSERT(!KURL(ParsedURLString, url).hasFragmentIdentifier());
116    return m_resources.get(url).get();
117}
118
119bool ApplicationCache::requestIsHTTPOrHTTPSGet(const ResourceRequest& request)
120{
121    if (!request.url().protocolInHTTPFamily())
122        return false;
123
124    if (!equalIgnoringCase(request.httpMethod(), "GET"))
125        return false;
126
127    return true;
128}
129
130ApplicationCacheResource* ApplicationCache::resourceForRequest(const ResourceRequest& request)
131{
132    // We only care about HTTP/HTTPS GET requests.
133    if (!requestIsHTTPOrHTTPSGet(request))
134        return 0;
135
136    KURL url(request.url());
137    if (url.hasFragmentIdentifier())
138        url.removeFragmentIdentifier();
139
140    return resourceForURL(url);
141}
142
143void ApplicationCache::setOnlineWhitelist(const Vector<KURL>& onlineWhitelist)
144{
145    ASSERT(m_onlineWhitelist.isEmpty());
146    m_onlineWhitelist = onlineWhitelist;
147}
148
149bool ApplicationCache::isURLInOnlineWhitelist(const KURL& url)
150{
151    if (m_allowAllNetworkRequests)
152        return true;
153
154    size_t whitelistSize = m_onlineWhitelist.size();
155    for (size_t i = 0; i < whitelistSize; ++i) {
156        if (protocolHostAndPortAreEqual(url, m_onlineWhitelist[i]) && url.string().startsWith(m_onlineWhitelist[i].string()))
157            return true;
158    }
159    return false;
160}
161
162void ApplicationCache::setFallbackURLs(const FallbackURLVector& fallbackURLs)
163{
164    ASSERT(m_fallbackURLs.isEmpty());
165    m_fallbackURLs = fallbackURLs;
166}
167
168bool ApplicationCache::urlMatchesFallbackNamespace(const KURL& url, KURL* fallbackURL)
169{
170    size_t fallbackCount = m_fallbackURLs.size();
171    for (size_t i = 0; i < fallbackCount; ++i) {
172        if (protocolHostAndPortAreEqual(url, m_fallbackURLs[i].first) && url.string().startsWith(m_fallbackURLs[i].first.string())) {
173            if (fallbackURL)
174                *fallbackURL = m_fallbackURLs[i].second;
175            return true;
176        }
177    }
178    return false;
179}
180
181void ApplicationCache::clearStorageID()
182{
183    m_storageID = 0;
184
185    ResourceMap::const_iterator end = m_resources.end();
186    for (ResourceMap::const_iterator it = m_resources.begin(); it != end; ++it)
187        it->second->clearStorageID();
188}
189
190#ifndef NDEBUG
191void ApplicationCache::dump()
192{
193    HashMap<String, RefPtr<ApplicationCacheResource> >::const_iterator end = m_resources.end();
194
195    for (HashMap<String, RefPtr<ApplicationCacheResource> >::const_iterator it = m_resources.begin(); it != end; ++it) {
196        printf("%s ", it->first.ascii().data());
197        ApplicationCacheResource::dumpType(it->second->type());
198    }
199}
200#endif
201
202}
203
204#endif // ENABLE(OFFLINE_WEB_APPLICATIONS)
205