mirror of
https://github.com/gorhill/uBlock.git
synced 2024-09-04 01:59:38 +02:00
314 lines
11 KiB
JavaScript
314 lines
11 KiB
JavaScript
|
/*******************************************************************************
|
||
|
|
||
|
uBlock Origin - a browser extension to block requests.
|
||
|
Copyright (C) 2017 Raymond Hill
|
||
|
|
||
|
This program is free software: you can redistribute it and/or modify
|
||
|
it under the terms of the GNU General Public License as published by
|
||
|
the Free Software Foundation, either version 3 of the License, or
|
||
|
(at your option) any later version.
|
||
|
|
||
|
This program is distributed in the hope that it will be useful,
|
||
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
GNU General Public License for more details.
|
||
|
|
||
|
You should have received a copy of the GNU General Public License
|
||
|
along with this program. If not, see {http://www.gnu.org/licenses/}.
|
||
|
|
||
|
Home: https://github.com/gorhill/uBlock
|
||
|
*/
|
||
|
|
||
|
// For background page
|
||
|
|
||
|
'use strict';
|
||
|
|
||
|
/******************************************************************************/
|
||
|
|
||
|
vAPI.net = {};
|
||
|
|
||
|
vAPI.net.registerListeners = function() {
|
||
|
|
||
|
var µb = µBlock,
|
||
|
µburi = µb.URI,
|
||
|
wrApi = chrome.webRequest;
|
||
|
|
||
|
// https://bugs.chromium.org/p/chromium/issues/detail?id=410382
|
||
|
// Between Chromium 38-48, plug-ins' network requests were reported as
|
||
|
// type "other" instead of "object".
|
||
|
var is_v38_48 = /\bChrom[a-z]+\/(?:3[89]|4[0-8])\.[\d.]+\b/.test(navigator.userAgent);
|
||
|
|
||
|
// legacy Chromium understands only these network request types.
|
||
|
var validTypes = {
|
||
|
main_frame: true,
|
||
|
sub_frame: true,
|
||
|
stylesheet: true,
|
||
|
script: true,
|
||
|
image: true,
|
||
|
object: true,
|
||
|
xmlhttprequest: true,
|
||
|
other: true
|
||
|
};
|
||
|
// modern Chromium/WebExtensions: more types available.
|
||
|
if ( wrApi.ResourceType ) {
|
||
|
(function() {
|
||
|
for ( var typeKey in wrApi.ResourceType ) {
|
||
|
if ( wrApi.ResourceType.hasOwnProperty(typeKey) ) {
|
||
|
validTypes[wrApi.ResourceType[typeKey]] = true;
|
||
|
}
|
||
|
}
|
||
|
})();
|
||
|
}
|
||
|
|
||
|
var extToTypeMap = new Map([
|
||
|
['eot','font'],['otf','font'],['svg','font'],['ttf','font'],['woff','font'],['woff2','font'],
|
||
|
['mp3','media'],['mp4','media'],['webm','media'],
|
||
|
['gif','image'],['ico','image'],['jpeg','image'],['jpg','image'],['png','image'],['webp','image']
|
||
|
]);
|
||
|
|
||
|
var denormalizeTypes = function(aa) {
|
||
|
if ( aa.length === 0 ) {
|
||
|
return Object.keys(validTypes);
|
||
|
}
|
||
|
var out = [];
|
||
|
var i = aa.length,
|
||
|
type,
|
||
|
needOther = true;
|
||
|
while ( i-- ) {
|
||
|
type = aa[i];
|
||
|
if ( validTypes[type] ) {
|
||
|
out.push(type);
|
||
|
}
|
||
|
if ( type === 'other' ) {
|
||
|
needOther = false;
|
||
|
}
|
||
|
}
|
||
|
if ( needOther ) {
|
||
|
out.push('other');
|
||
|
}
|
||
|
return out;
|
||
|
};
|
||
|
|
||
|
var headerValue = function(headers, name) {
|
||
|
var i = headers.length;
|
||
|
while ( i-- ) {
|
||
|
if ( headers[i].name.toLowerCase() === name ) {
|
||
|
return headers[i].value.trim();
|
||
|
}
|
||
|
}
|
||
|
return '';
|
||
|
};
|
||
|
|
||
|
var normalizeRequestDetails = function(details) {
|
||
|
details.tabId = details.tabId.toString();
|
||
|
|
||
|
var type = details.type;
|
||
|
|
||
|
// https://github.com/gorhill/uBlock/issues/1493
|
||
|
// Chromium 49+/WebExtensions support a new request type: `ping`,
|
||
|
// which is fired as a result of using `navigator.sendBeacon`.
|
||
|
if ( type === 'ping' ) {
|
||
|
details.type = 'beacon';
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
if ( type === 'imageset' ) {
|
||
|
details.type = 'image';
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
// The rest of the function code is to normalize type
|
||
|
if ( type !== 'other' ) {
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
// Try to map known "extension" part of URL to request type.
|
||
|
var path = µburi.pathFromURI(details.url),
|
||
|
pos = path.indexOf('.', path.length - 6);
|
||
|
if ( pos !== -1 && (type = extToTypeMap.get(path.slice(pos + 1))) ) {
|
||
|
details.type = type;
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
// Try to extract type from response headers if present.
|
||
|
if ( details.responseHeaders ) {
|
||
|
type = headerValue(details.responseHeaders, 'content-type');
|
||
|
if ( type.startsWith('font/') ) {
|
||
|
details.type = 'font';
|
||
|
return;
|
||
|
}
|
||
|
if ( type.startsWith('image/') ) {
|
||
|
details.type = 'image';
|
||
|
return;
|
||
|
}
|
||
|
if ( type.startsWith('audio/') || type.startsWith('video/') ) {
|
||
|
details.type = 'media';
|
||
|
return;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
// https://github.com/chrisaljoudi/uBlock/issues/862
|
||
|
// If no transposition possible, transpose to `object` as per
|
||
|
// Chromium bug 410382
|
||
|
// https://code.google.com/p/chromium/issues/detail?id=410382
|
||
|
if ( is_v38_48 ) {
|
||
|
details.type = 'object';
|
||
|
}
|
||
|
};
|
||
|
|
||
|
// https://bugs.chromium.org/p/chromium/issues/detail?id=129353
|
||
|
// https://github.com/gorhill/uBlock/issues/1497
|
||
|
// Expose websocket-based network requests to uBO's filtering engine,
|
||
|
// logger, etc.
|
||
|
// Counterpart of following block of code is found in "vapi-client.js" --
|
||
|
// search for "https://github.com/gorhill/uBlock/issues/1497".
|
||
|
//
|
||
|
// Once uBO 1.11.1 and uBO-Extra 2.12 are widespread, the image-based
|
||
|
// handling code can be removed.
|
||
|
var onBeforeWebsocketRequest = function(details) {
|
||
|
if ( (details.type !== 'image') &&
|
||
|
(details.method !== 'HEAD' || details.type !== 'xmlhttprequest')
|
||
|
) {
|
||
|
return;
|
||
|
}
|
||
|
var requestURL = details.url,
|
||
|
matches = /[?&]u(?:rl)?=([^&]+)/.exec(requestURL);
|
||
|
if ( matches === null ) { return; }
|
||
|
details.type = 'websocket';
|
||
|
details.url = decodeURIComponent(matches[1]);
|
||
|
var r = onBeforeRequestClient(details);
|
||
|
if ( r && r.cancel ) { return r; }
|
||
|
// Redirect to the provided URL, or a 1x1 data: URI if none provided.
|
||
|
matches = /[?&]r=([^&]+)/.exec(requestURL);
|
||
|
return {
|
||
|
redirectUrl: matches !== null ?
|
||
|
decodeURIComponent(matches[1]) :
|
||
|
'data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=='
|
||
|
};
|
||
|
};
|
||
|
|
||
|
var onBeforeRequestClient = this.onBeforeRequest.callback;
|
||
|
var onBeforeRequest = validTypes.websocket
|
||
|
// modern Chromium/WebExtensions: type 'websocket' is supported
|
||
|
? function(details) {
|
||
|
normalizeRequestDetails(details);
|
||
|
return onBeforeRequestClient(details);
|
||
|
}
|
||
|
// legacy Chromium
|
||
|
: function(details) {
|
||
|
// https://github.com/gorhill/uBlock/issues/1497
|
||
|
if ( details.url.endsWith('ubofix=f41665f3028c7fd10eecf573336216d3') ) {
|
||
|
var r = onBeforeWebsocketRequest(details);
|
||
|
if ( r !== undefined ) { return r; }
|
||
|
}
|
||
|
normalizeRequestDetails(details);
|
||
|
return onBeforeRequestClient(details);
|
||
|
};
|
||
|
|
||
|
// This is needed for Chromium 49-55.
|
||
|
var onBeforeSendHeaders = validTypes.csp_report
|
||
|
// modern Chromium/WebExtensions: type 'csp_report' is supported
|
||
|
? null
|
||
|
// legacy Chromium
|
||
|
: function(details) {
|
||
|
if ( details.type !== 'ping' || details.method !== 'POST' ) { return; }
|
||
|
var type = headerValue(details.requestHeaders, 'content-type');
|
||
|
if ( type === '' ) { return; }
|
||
|
if ( type.endsWith('/csp-report') ) {
|
||
|
details.type = 'csp_report';
|
||
|
return onBeforeRequestClient(details);
|
||
|
}
|
||
|
};
|
||
|
|
||
|
var onHeadersReceivedClient = this.onHeadersReceived.callback,
|
||
|
onHeadersReceivedClientTypes = this.onHeadersReceived.types.slice(0),
|
||
|
onHeadersReceivedTypes = denormalizeTypes(onHeadersReceivedClientTypes);
|
||
|
var onHeadersReceived = validTypes.font
|
||
|
// modern Chromium/WebExtensions: type 'font' is supported
|
||
|
? function(details) {
|
||
|
normalizeRequestDetails(details);
|
||
|
if (
|
||
|
onHeadersReceivedClientTypes.length !== 0 &&
|
||
|
onHeadersReceivedClientTypes.indexOf(details.type) === -1
|
||
|
) {
|
||
|
return;
|
||
|
}
|
||
|
return onHeadersReceivedClient(details);
|
||
|
}
|
||
|
// legacy Chromium
|
||
|
: function(details) {
|
||
|
normalizeRequestDetails(details);
|
||
|
// Hack to work around Chromium API limitations, where requests of
|
||
|
// type `font` are returned as `other`. For example, our normalization
|
||
|
// fail at transposing `other` into `font` for URLs which are outside
|
||
|
// what is expected. At least when headers are received we can check
|
||
|
// for content type `font/*`. Blocking at onHeadersReceived time is
|
||
|
// less worse than not blocking at all. Also, due to Chromium bug,
|
||
|
// `other` always becomes `object` when it can't be normalized into
|
||
|
// something else. Test case for "unfriendly" font URLs:
|
||
|
// https://www.google.com/fonts
|
||
|
if ( details.type === 'font' ) {
|
||
|
var r = onBeforeRequestClient(details);
|
||
|
if ( typeof r === 'object' && r.cancel === true ) {
|
||
|
return { cancel: true };
|
||
|
}
|
||
|
}
|
||
|
if (
|
||
|
onHeadersReceivedClientTypes.length !== 0 &&
|
||
|
onHeadersReceivedClientTypes.indexOf(details.type) === -1
|
||
|
) {
|
||
|
return;
|
||
|
}
|
||
|
return onHeadersReceivedClient(details);
|
||
|
};
|
||
|
|
||
|
var urls, types;
|
||
|
|
||
|
if ( onBeforeRequest ) {
|
||
|
urls = this.onBeforeRequest.urls || ['<all_urls>'];
|
||
|
types = this.onBeforeRequest.types || undefined;
|
||
|
if (
|
||
|
(validTypes.websocket) &&
|
||
|
(types === undefined || types.indexOf('websocket') !== -1) &&
|
||
|
(urls.indexOf('<all_urls>') === -1)
|
||
|
) {
|
||
|
if ( urls.indexOf('ws://*/*') === -1 ) {
|
||
|
urls.push('ws://*/*');
|
||
|
}
|
||
|
if ( urls.indexOf('wss://*/*') === -1 ) {
|
||
|
urls.push('wss://*/*');
|
||
|
}
|
||
|
}
|
||
|
wrApi.onBeforeRequest.addListener(
|
||
|
onBeforeRequest,
|
||
|
{ urls: urls, types: types },
|
||
|
this.onBeforeRequest.extra
|
||
|
);
|
||
|
}
|
||
|
|
||
|
// Chromium 48 and lower does not support `ping` type.
|
||
|
// Chromium 56 and higher does support `csp_report` stype.
|
||
|
if ( onBeforeSendHeaders ) {
|
||
|
wrApi.onBeforeSendHeaders.addListener(
|
||
|
onBeforeSendHeaders,
|
||
|
{
|
||
|
'urls': [ '<all_urls>' ],
|
||
|
'types': [ 'ping' ]
|
||
|
},
|
||
|
[ 'blocking', 'requestHeaders' ]
|
||
|
);
|
||
|
}
|
||
|
|
||
|
if ( onHeadersReceived ) {
|
||
|
urls = this.onHeadersReceived.urls || ['<all_urls>'];
|
||
|
types = onHeadersReceivedTypes;
|
||
|
wrApi.onHeadersReceived.addListener(
|
||
|
onHeadersReceived,
|
||
|
{ urls: urls, types: types },
|
||
|
this.onHeadersReceived.extra
|
||
|
);
|
||
|
}
|
||
|
};
|
||
|
|
||
|
/******************************************************************************/
|