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
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
|
"use strict";
const { classes: Cc, interfaces: Ci, utils: Cu } = Components;
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
Cu.import("resource://gre/modules/Services.jsm");
Cu.import("resource://gre/modules/NetUtil.jsm");
XPCOMUtils.defineLazyModuleGetter(this, "OfflineAppCacheHelper",
"resource:///modules/offlineAppCache.jsm");
this.EXPORTED_SYMBOLS = [
"SiteDataManager"
];
this.SiteDataManager = {
_qms: Services.qms,
_diskCache: Services.cache2.diskCacheStorage(Services.loadContextInfo.default, false),
_appCache: Cc["@mozilla.org/network/application-cache-service;1"].getService(Ci.nsIApplicationCacheService),
// A Map of sites using the persistent-storage API (have requested persistent-storage permission)
// Key is site's origin.
// Value is one object holding:
// - perm: persistent-storage permision; instance of nsIPermission
// - status: the permission granted/rejected status
// - quotaUsage: the usage of indexedDB and localStorage.
// - appCacheList: an array of app cache; instances of nsIApplicationCache
// - diskCacheList: an array. Each element is object holding metadata of http cache:
// - dataSize: that http cache size
// - idEnhance: the id extension of that http cache
_sites: new Map(),
_updateQuotaPromise: null,
_updateDiskCachePromise: null,
_quotaUsageRequests: null,
updateSites() {
// Clear old data and requests first
this._sites.clear();
this._cancelQuotaUpdate();
// Collect sites granted/rejected with the persistent-storage permission
let perm = null;
let status = null;
let e = Services.perms.enumerator;
while (e.hasMoreElements()) {
perm = e.getNext();
status = Services.perms.testExactPermissionFromPrincipal(perm.principal, "persistent-storage");
if (status === Ci.nsIPermissionManager.ALLOW_ACTION ||
status === Ci.nsIPermissionManager.DENY_ACTION) {
this._sites.set(perm.principal.origin, {
perm,
status,
quotaUsage: 0,
appCacheList: [],
diskCacheList: []
});
}
}
this._updateQuota();
this._updateAppCache();
this._updateDiskCache();
Promise.all([this._updateQuotaPromise, this._updateDiskCachePromise])
.then(() => {
Services.obs.notifyObservers(null, "sitedatamanager:sites-updated", null);
});
},
_updateQuota() {
this._quotaUsageRequests = [];
let promises = [];
for (let site of this._sites.values()) {
promises.push(new Promise(resolve => {
let callback = {
onUsageResult(request) {
site.quotaUsage = request.usage;
resolve();
}
};
// XXX: The work of integrating localStorage into Quota Manager is in progress.
// After the bug 742822 and 1286798 landed, localStorage usage will be included.
// So currently only get indexedDB usage.
this._quotaUsageRequests.push(
this._qms.getUsageForPrincipal(site.perm.principal, callback));
}));
}
this._updateQuotaPromise = Promise.all(promises);
},
_cancelQuotaUpdate() {
if (this._quotaUsageRequests) {
for (let request of this._quotaUsageRequests) {
request.cancel();
}
this._quotaUsageRequests = null;
}
},
_updateAppCache() {
let groups = this._appCache.getGroups();
for (let site of this._sites.values()) {
for (let group of groups) {
let uri = Services.io.newURI(group);
if (site.perm.matchesURI(uri, true)) {
let cache = this._appCache.getActiveCache(group);
site.appCacheList.push(cache);
}
}
}
},
_updateDiskCache() {
this._updateDiskCachePromise = new Promise(resolve => {
if (this._sites.size) {
let sites = this._sites;
let visitor = {
onCacheEntryInfo(uri, idEnhance, dataSize) {
for (let site of sites.values()) {
if (site.perm.matchesURI(uri, true)) {
site.diskCacheList.push({
dataSize,
idEnhance
});
break;
}
}
},
onCacheEntryVisitCompleted() {
resolve();
}
};
this._diskCache.asyncVisitStorage(visitor, true);
} else {
resolve();
}
});
},
getTotalUsage() {
return Promise.all([this._updateQuotaPromise, this._updateDiskCachePromise])
.then(() => {
let usage = 0;
for (let site of this._sites.values()) {
let cache = null;
for (cache of site.appCacheList) {
usage += cache.usage;
}
for (cache of site.diskCacheList) {
usage += cache.dataSize;
}
usage += site.quotaUsage;
}
return usage;
});
},
_removePermission(site) {
Services.perms.removePermission(site.perm);
},
_removeQuotaUsage(site) {
this._qms.clearStoragesForPrincipal(site.perm.principal, null, true);
},
removeAll() {
for (let site of this._sites.values()) {
this._removePermission(site);
this._removeQuotaUsage(site);
}
Services.cache2.clear();
Services.cookies.removeAll();
OfflineAppCacheHelper.clear();
this.updateSites();
},
getSites() {
return Promise.all([this._updateQuotaPromise, this._updateDiskCachePromise])
.then(() => {
let list = [];
for (let [origin, site] of this._sites) {
let cache = null;
let usage = site.quotaUsage;
for (cache of site.appCacheList) {
usage += cache.usage;
}
for (cache of site.diskCacheList) {
usage += cache.dataSize;
}
list.push({
usage,
status: site.status,
uri: NetUtil.newURI(origin)
});
}
return list;
});
}
};
|
