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1 /* | 1 /* |
2 * This file is part of Adblock Plus <https://adblockplus.org/>, | 2 * This file is part of Adblock Plus <https://adblockplus.org/>, |
3 * Copyright (C) 2006-present eyeo GmbH | 3 * Copyright (C) 2006-present eyeo GmbH |
4 * | 4 * |
5 * Adblock Plus is free software: you can redistribute it and/or modify | 5 * Adblock Plus is free software: you can redistribute it and/or modify |
6 * it under the terms of the GNU General Public License version 3 as | 6 * it under the terms of the GNU General Public License version 3 as |
7 * published by the Free Software Foundation. | 7 * published by the Free Software Foundation. |
8 * | 8 * |
9 * Adblock Plus is distributed in the hope that it will be useful, | 9 * Adblock Plus is distributed in the hope that it will be useful, |
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of | 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
12 * GNU General Public License for more details. | 12 * GNU General Public License for more details. |
13 * | 13 * |
14 * You should have received a copy of the GNU General Public License | 14 * You should have received a copy of the GNU General Public License |
15 * along with Adblock Plus. If not, see <http://www.gnu.org/licenses/>. | 15 * along with Adblock Plus. If not, see <http://www.gnu.org/licenses/>. |
16 */ | 16 */ |
17 | 17 |
18 "use strict"; | 18 "use strict"; |
19 | 19 |
20 const {defaultMatcher} = require("matcher"); | 20 const {defaultMatcher} = require("matcher"); |
21 const {BlockingFilter, | 21 const {RegExpFilter, WhitelistFilter} = require("filterClasses"); |
22 RegExpFilter, | 22 const {extractHostFromFrame, getDecodedHostname, |
23 WhitelistFilter} = require("filterClasses"); | 23 isThirdParty, stringifyURL} = require("url"); |
24 const {getDecodedHostname, stringifyURL} = require("url"); | |
25 const {checkWhitelisted} = require("whitelisting"); | 24 const {checkWhitelisted} = require("whitelisting"); |
26 const {FilterNotifier} = require("filterNotifier"); | 25 const {FilterNotifier} = require("filterNotifier"); |
27 const devtools = require("devtools"); | 26 const devtools = require("devtools"); |
28 | 27 |
29 const {typeMap} = RegExpFilter; | 28 const {typeMap} = RegExpFilter; |
30 | 29 |
31 browser.webRequest.onHeadersReceived.addListener(details => | 30 browser.webRequest.onHeadersReceived.addListener(details => |
32 { | 31 { |
33 // Chrome seems to sometimes give the response type of "xmlhttprequest" | 32 let url = new URL(details.url); |
34 // instead of "main_frame", but when it does the tabId is always -1 and | 33 let urlString = stringifyURL(url); |
35 // the URL matches the initiator's URL[1]. | 34 let parentFrame = ext.getFrame(details.tabId, details.parentFrameId); |
36 // Chrome also seems to not normalise the initiator URL[2]. | 35 let hostname = extractHostFromFrame(parentFrame) || getDecodedHostname(url); |
37 // [1] - https://bugs.chromium.org/p/chromium/issues/detail?id=805649 | 36 let thirdParty = isThirdParty(url, hostname); |
38 // [2] - https://bugs.chromium.org/p/chromium/issues/detail?id=821042 | |
39 if (details.type == "xmlhttprequest" && | |
40 (details.tabId > -1 || details.initiator && | |
41 details.url != new URL(details.initiator).toString())) | |
42 { | |
43 return; | |
44 } | |
45 | 37 |
46 // To avoid an extra matchesAny for the common case let's assume no | 38 let cspMatch = defaultMatcher.matchesAny(urlString, typeMap.CSP, hostname, |
47 // $genericblock filters apply when searching for a matching $csp filter, | 39 thirdParty, null, false); |
48 // we can double check later if necessary. | |
49 let specificOnly = false; | |
50 | |
51 let url = new URL(details.url); | |
52 let hostname = getDecodedHostname(url); | |
53 let cspMatch = defaultMatcher.matchesAny(details.url, typeMap.CSP, hostname, | |
54 false, null, specificOnly); | |
55 let page = null; | |
56 | |
57 if (cspMatch) | 40 if (cspMatch) |
58 { | 41 { |
59 if (details.tabId > -1) | 42 let page = new ext.Page({id: details.tabId, url: details.url}); |
| 43 let frame = ext.getFrame(details.tabId, details.frameId); |
| 44 |
| 45 if (checkWhitelisted(page, frame)) |
| 46 return; |
| 47 |
| 48 // To avoid an extra matchesAny for the common case we assumed no |
| 49 // $genericblock filters applied when searching for a matching $csp filter. |
| 50 // We must now pay the price by first checking for a $genericblock filter |
| 51 // and if necessary that our $csp filter is specific. |
| 52 let specificOnly = !!checkWhitelisted(page, frame, typeMap.GENERICBLOCK); |
| 53 if (specificOnly) |
60 { | 54 { |
61 page = new ext.Page({id: details.tabId, url: details.url}); | 55 cspMatch = defaultMatcher.matchesAny(urlString, typeMap.CSP, hostname, |
62 | 56 thirdParty, null, specificOnly); |
63 if (cspMatch instanceof WhitelistFilter) | 57 if (!cspMatch) |
64 { | |
65 if (devtools) | |
66 { | |
67 devtools.logWhitelistedDocument(page, details.url, typeMap.CSP, | |
68 hostname, cspMatch); | |
69 } | |
70 return; | 58 return; |
71 } | |
72 | |
73 let frame = ext.getFrame(details.tabId, details.frameId); | |
74 | |
75 if (checkWhitelisted(page, frame, typeMap.DOCUMENT | typeMap.CSP)) | |
76 return; | |
77 | |
78 // We pay the price now for skipping the specificOnly check earlier, we | |
79 // must check again for a CSP filter, this time making sure it's specific. | |
80 specificOnly = !!checkWhitelisted(page, frame, typeMap.GENERICBLOCK); | |
81 if (specificOnly) | |
82 { | |
83 cspMatch = defaultMatcher.matchesAny(details.url, typeMap.CSP, hostname, | |
84 false, null, specificOnly); | |
85 if (!(cspMatch instanceof BlockingFilter)) | |
86 return; | |
87 } | |
88 | |
89 FilterNotifier.emit("filter.hitCount", cspMatch, 0, 0, page); | |
90 } | |
91 // If we don't know the associated tab we'll have to check that if the URL | |
92 // is whitelisted manually. Things like $sitekey whitelisting and filter hit | |
93 // logging won't work, but it's the best we can do. | |
94 else if (cspMatch instanceof WhitelistFilter || | |
95 defaultMatcher.whitelist.matchesAny(stringifyURL(url), | |
96 typeMap.DOCUMENT | typeMap.CSP, | |
97 hostname)) | |
98 { | |
99 return; | |
100 } | 59 } |
101 | 60 |
102 if (devtools) | 61 devtools.logRequest(page, urlString, "CSP", hostname, thirdParty, null, |
103 { | 62 specificOnly, cspMatch); |
104 devtools.logRequest(page, details.url, "CSP", hostname, | 63 FilterNotifier.emit("filter.hitCount", cspMatch, 0, 0, page); |
105 false, null, specificOnly, cspMatch); | 64 |
106 } | 65 if (cspMatch instanceof WhitelistFilter) |
| 66 return; |
107 | 67 |
108 details.responseHeaders.push({ | 68 details.responseHeaders.push({ |
109 name: "Content-Security-Policy", | 69 name: "Content-Security-Policy", |
110 value: cspMatch.csp | 70 value: cspMatch.csp |
111 }); | 71 }); |
112 | 72 |
113 return {responseHeaders: details.responseHeaders}; | 73 return {responseHeaders: details.responseHeaders}; |
114 } | 74 } |
115 }, { | 75 }, { |
116 urls: ["http://*/*", "https://*/*"], | 76 urls: ["http://*/*", "https://*/*"], |
117 types: ["main_frame", "sub_frame", "xmlhttprequest"] | 77 types: ["main_frame", "sub_frame"] |
118 }, ["blocking", "responseHeaders"]); | 78 }, ["blocking", "responseHeaders"]); |
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