dom/activities/src/ActivitiesServiceFilter.jsm@97036ab72558
dom/activities/src/ActivitiesServiceFilter.jsm
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
1 /* This Source Code Form is subject to the terms of the Mozilla Public
2 * License, v. 2.0. If a copy of the MPL was not distributed with this file,
3 * You can obtain one at http://mozilla.org/MPL/2.0/. */
5 "use strict"
7 this.EXPORTED_SYMBOLS = ['ActivitiesServiceFilter'];
9 this.ActivitiesServiceFilter = {
10 match: function(aValues, aFilters) {
12 function matchValue(aValue, aFilter, aFilterObj) {
13 if (aFilter !== null) {
14 // Custom functions for the different types.
15 switch (typeof(aFilter)) {
16 case 'boolean':
17 return aValue === aFilter;
19 case 'number':
20 return Number(aValue) === aFilter;
22 case 'string':
23 return String(aValue) === aFilter;
25 default: // not supported
26 return false;
27 }
28 }
30 // Pattern.
31 if (('pattern' in aFilterObj)) {
32 var pattern = String(aFilterObj.pattern);
34 var patternFlags = '';
35 if (('patternFlags' in aFilterObj)) {
36 patternFlags = String(aFilterObj.patternFlags);
37 }
39 var re = new RegExp('^(?:' + pattern + ')$', patternFlags);
40 return re.test(aValue);
41 }
43 // Validation of the min/Max.
44 if (('min' in aFilterObj) || ('max' in aFilterObj)) {
45 // Min value.
46 if (('min' in aFilterObj) &&
47 aFilterObj.min > aValue) {
48 return false;
49 }
51 // Max value.
52 if (('max' in aFilterObj) &&
53 aFilterObj.max < aValue) {
54 return false;
55 }
56 }
58 return true;
59 }
61 // this function returns true if the value matches with the filter object
62 function matchObject(aValue, aFilterObj) {
64 // Let's consider anything an array.
65 let filters = ('value' in aFilterObj)
66 ? (Array.isArray(aFilterObj.value)
67 ? aFilterObj.value
68 : [aFilterObj.value])
69 : [ null ];
70 let values = Array.isArray(aValue) ? aValue : [aValue];
72 for (var filterId = 0; filterId < filters.length; ++filterId) {
73 for (var valueId = 0; valueId < values.length; ++valueId) {
74 if (matchValue(values[valueId], filters[filterId], aFilterObj)) {
75 return true;
76 }
77 }
78 }
80 return false;
81 }
83 // Creation of a filter map useful to know what has been
84 // matched and what is not.
85 let filtersMap = {}
86 for (let filter in aFilters) {
87 // Convert this filter in an object if needed
88 let filterObj = aFilters[filter];
90 if (Array.isArray(filterObj) || typeof(filterObj) !== 'object') {
91 filterObj = {
92 required: false,
93 value: filterObj
94 }
95 }
97 filtersMap[filter] = { filter: filterObj,
98 found: false };
99 }
101 // For any incoming property.
102 for (let prop in aValues) {
103 // If this is unknown for the app, let's continue.
104 if (!(prop in filtersMap)) {
105 continue;
106 }
108 if (Array.isArray(aValues[prop]) && aValues[prop].length == 0) {
109 continue;
110 }
112 // Otherwise, let's check the value against the filter.
113 if (!matchObject(aValues[prop], filtersMap[prop].filter)) {
114 return false;
115 }
117 filtersMap[prop].found = true;
118 }
120 // Required filters:
121 for (let filter in filtersMap) {
122 if (filtersMap[filter].filter.required && !filtersMap[filter].found) {
123 return false;
124 }
125 }
127 return true;
128 }
129 }
