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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, RegExpFilter} = require("filterClasses"); | 21 const {RegExpFilter, WhitelistFilter} = require("filterClasses"); |
22 const {getDecodedHostname, stringifyURL} = require("url"); | 22 const {extractHostFromFrame, getDecodedHostname, |
| 23 isThirdParty, stringifyURL} = require("url"); |
23 const {checkWhitelisted} = require("whitelisting"); | 24 const {checkWhitelisted} = require("whitelisting"); |
24 const {FilterNotifier} = require("filterNotifier"); | 25 const {FilterNotifier} = require("filterNotifier"); |
| 26 const devtools = require("devtools"); |
| 27 |
| 28 const {typeMap} = RegExpFilter; |
25 | 29 |
26 browser.webRequest.onHeadersReceived.addListener(details => | 30 browser.webRequest.onHeadersReceived.addListener(details => |
27 { | 31 { |
28 // Chrome seems to sometimes give the response type of "xmlhttprequest" | 32 let url = new URL(details.url); |
29 // instead of "main_frame", but when it does the tabId is always -1 and | 33 let urlString = stringifyURL(url); |
30 // the URL matches the initiator's URL (once normalised). | 34 let parentFrame = ext.getFrame(details.tabId, details.parentFrameId); |
31 // https://bugs.chromium.org/p/chromium/issues/detail?id=805649 | 35 let hostname = extractHostFromFrame(parentFrame) || getDecodedHostname(url); |
32 if (details.type == "xmlhttprequest" && | 36 let thirdParty = isThirdParty(url, hostname); |
33 (details.tabId > -1 || details.initiator && | 37 |
34 details.url != new URL(details.initiator).toString())) | 38 let cspMatch = defaultMatcher.matchesAny(urlString, typeMap.CSP, hostname, |
| 39 thirdParty, null, false); |
| 40 if (cspMatch) |
35 { | 41 { |
36 return; | 42 let page = new ext.Page({id: details.tabId, url: details.url}); |
37 } | 43 let frame = ext.getFrame(details.tabId, details.frameId); |
38 | 44 |
39 // To avoid an extra matchesAny for the common case let's assume no | 45 if (checkWhitelisted(page, frame)) |
40 // $genericblock filters apply when searching for a matching $csp filter, | 46 return; |
41 // we double check later when necessary. | |
42 let specificOnly = false; | |
43 | 47 |
44 let url = new URL(details.url); | 48 // To avoid an extra matchesAny for the common case we assumed no |
45 let hostname = getDecodedHostname(url); | 49 // $genericblock filters applied when searching for a matching $csp filter. |
46 let cspMatch = defaultMatcher.matchesAny( | 50 // We must now pay the price by first checking for a $genericblock filter |
47 details.url, | 51 // and if necessary that our $csp filter is specific. |
48 RegExpFilter.typeMap.CSP, | 52 let specificOnly = !!checkWhitelisted(page, frame, typeMap.GENERICBLOCK); |
49 hostname, false, null, specificOnly | 53 if (specificOnly) |
50 ); | 54 { |
| 55 cspMatch = defaultMatcher.matchesAny(urlString, typeMap.CSP, hostname, |
| 56 thirdParty, null, specificOnly); |
| 57 if (!cspMatch) |
| 58 return; |
| 59 } |
51 | 60 |
52 if (cspMatch instanceof BlockingFilter) | 61 devtools.logRequest(page, urlString, "CSP", hostname, thirdParty, null, |
53 { | 62 specificOnly, cspMatch); |
54 if (details.tabId > -1) | 63 FilterNotifier.emit("filter.hitCount", cspMatch, 0, 0, page); |
55 { | |
56 let page = new ext.Page({id: details.tabId, url: details.url}); | |
57 let frame = ext.getFrame(details.tabId, details.frameId); | |
58 | 64 |
59 if (checkWhitelisted(page, frame, RegExpFilter.typeMap.DOCUMENT | | 65 if (cspMatch instanceof WhitelistFilter) |
60 RegExpFilter.typeMap.CSP)) | |
61 { | |
62 return; | |
63 } | |
64 | |
65 // We pay the price now for skipping the specificOnly check earlier, we | |
66 // must check again for a CSP filter, this time making sure it's specific. | |
67 specificOnly = !!checkWhitelisted(page, frame, | |
68 RegExpFilter.typeMap.GENERICBLOCK); | |
69 if (specificOnly) | |
70 { | |
71 cspMatch = defaultMatcher.matchesAny( | |
72 details.url, | |
73 RegExpFilter.typeMap.CSP, | |
74 hostname, false, null, specificOnly | |
75 ); | |
76 if (!(cspMatch instanceof BlockingFilter)) | |
77 return; | |
78 } | |
79 | |
80 FilterNotifier.emit("filter.hitCount", cspMatch, 0, 0, page); | |
81 } | |
82 // If we don't know the associated tab we'll have to check that if the URL | |
83 // is whitelisted manually. Things like $sitekey whitelisting and filter hit | |
84 // logging won't work, but it's the best we can do. | |
85 else if (defaultMatcher.whitelist.matchesAny(stringifyURL(url), | |
86 RegExpFilter.typeMap.DOCUMENT | | |
87 RegExpFilter.typeMap.CSP, | |
88 hostname)) | |
89 { | |
90 return; | 66 return; |
91 } | |
92 | 67 |
93 details.responseHeaders.push({ | 68 details.responseHeaders.push({ |
94 name: "Content-Security-Policy", | 69 name: "Content-Security-Policy", |
95 value: cspMatch.csp | 70 value: cspMatch.csp |
96 }); | 71 }); |
97 | 72 |
98 return {responseHeaders: details.responseHeaders}; | 73 return {responseHeaders: details.responseHeaders}; |
99 } | 74 } |
100 }, { | 75 }, { |
101 urls: ["http://*/*", "https://*/*"], | 76 urls: ["http://*/*", "https://*/*"], |
102 types: ["main_frame", "sub_frame", "xmlhttprequest"] | 77 types: ["main_frame", "sub_frame"] |
103 }, ["blocking", "responseHeaders"]); | 78 }, ["blocking", "responseHeaders"]); |
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