1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/appcache/chrome_appcache_service.h"
#include "base/file_path.h"
#include "base/file_util.h"
#include "content/browser/content_browser_client.h"
#include "content/common/notification_service.h"
#include "net/base/net_errors.h"
#include "webkit/appcache/appcache_thread.h"
static bool has_initialized_thread_ids;
namespace {
// Used to defer deleting of local storage until the destructor has finished.
void DeleteLocalStateOnIOThread(FilePath cache_path) {
// Post the actual deletion to the DB thread to ensure it happens after the
// database file has been closed.
BrowserThread::PostTask(
BrowserThread::DB, FROM_HERE,
NewRunnableFunction<bool(*)(const FilePath&, bool), FilePath, bool>(
&file_util::Delete, cache_path, true));
}
} // namespace
// ----------------------------------------------------------------------------
ChromeAppCacheService::ChromeAppCacheService()
: resource_context_(NULL), clear_local_state_on_exit_(false) {
}
void ChromeAppCacheService::InitializeOnIOThread(
const FilePath& cache_path,
const content::ResourceContext* resource_context,
scoped_refptr<quota::SpecialStoragePolicy> special_storage_policy,
bool clear_local_state_on_exit) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
if (!has_initialized_thread_ids) {
has_initialized_thread_ids = true;
appcache::AppCacheThread::Init(BrowserThread::DB, BrowserThread::IO);
}
cache_path_ = cache_path;
resource_context_ = resource_context;
registrar_.Add(
this, NotificationType::PURGE_MEMORY, NotificationService::AllSources());
SetClearLocalStateOnExit(clear_local_state_on_exit);
// Init our base class.
Initialize(cache_path_,
BrowserThread::GetMessageLoopProxyForThread(BrowserThread::CACHE));
set_appcache_policy(this);
set_special_storage_policy(special_storage_policy);
}
ChromeAppCacheService::~ChromeAppCacheService() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
if (clear_local_state_on_exit_ && !cache_path_.empty()) {
BrowserThread::PostTask(
BrowserThread::IO, FROM_HERE,
NewRunnableFunction(DeleteLocalStateOnIOThread, cache_path_));
}
}
void ChromeAppCacheService::SetClearLocalStateOnExit(bool clear_local_state) {
// TODO(michaeln): How is 'protected' status granted to apps in this case?
if (!BrowserThread::CurrentlyOn(BrowserThread::IO)) {
BrowserThread::PostTask(
BrowserThread::IO, FROM_HERE,
NewRunnableMethod(this,
&ChromeAppCacheService::SetClearLocalStateOnExit,
clear_local_state));
return;
}
clear_local_state_on_exit_ = clear_local_state;
}
bool ChromeAppCacheService::CanLoadAppCache(const GURL& manifest_url) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
// We don't prompt for read access.
return content::GetContentClient()->browser()->AllowAppCache(
manifest_url, *resource_context_);
}
int ChromeAppCacheService::CanCreateAppCache(
const GURL& manifest_url, net::CompletionCallback* callback) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
return content::GetContentClient()->browser()->AllowAppCache(
manifest_url, *resource_context_) ? net::OK : net::ERR_ACCESS_DENIED;
}
void ChromeAppCacheService::Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
DCHECK(type == NotificationType::PURGE_MEMORY);
PurgeMemory();
}
// ----------------------------------------------------------------------------
static BrowserThread::ID ToBrowserThreadID(int id) {
DCHECK(has_initialized_thread_ids);
DCHECK(id == BrowserThread::DB || id == BrowserThread::IO);
return static_cast<BrowserThread::ID>(id);
}
namespace appcache {
// An impl of AppCacheThread we need to provide to the appcache lib.
bool AppCacheThread::PostTask(
int id,
const tracked_objects::Location& from_here,
Task* task) {
return BrowserThread::PostTask(ToBrowserThreadID(id), from_here, task);
}
bool AppCacheThread::CurrentlyOn(int id) {
return BrowserThread::CurrentlyOn(ToBrowserThreadID(id));
}
} // namespace appcache
|
