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Code Issues Releases Wiki Activity

fix https://github.com/uBlockOrigin/uBlock-issues/issues/208

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This commit is contained in:
Raymond Hill 2018-09-06 12:51:50 -04:00
parent 28cb2e4f4d
commit ba32c6a473
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GPG Key ID: 25E1490B761470C2
1 changed files with 46 additions and 34 deletions
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80
src/js/reverselookup-worker.js
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@ -112,18 +112,18 @@ var fromNetFilter = function(details) {
// FilterContainer.fromCompiledContent() is our reference code to create
// the various compiled versions.
var fromCosmeticFilter = function(details) {
var match = /^#@?#\^?/.exec(details.rawFilter),
let fromCosmeticFilter = function(details) {
let match = /^#@?#\^?/.exec(details.rawFilter),
prefix = match[0],
exception = prefix.charAt(1) === '@',
selector = details.rawFilter.slice(prefix.length);
// The longer the needle, the lower the number of false positives.
var needle = selector.match(/\w+/g).reduce(function(a, b) {
let needle = selector.match(/\w+/g).reduce(function(a, b) {
return a.length > b.length ? a : b;
});
var reHostname = new RegExp(
let reHostname = new RegExp(
'^' +
details.hostname.split('.').reduce(
function(acc, item) {
@ -136,7 +136,7 @@ var fromCosmeticFilter = function(details) {
'$'
);
var reEntity,
let reEntity,
domain = details.domain,
pos = domain.indexOf('.');
if ( pos !== -1 ) {
@ -154,24 +154,28 @@ var fromCosmeticFilter = function(details) {
);
}
var response = Object.create(null),
assetKey, entry, content,
found, beg, end,
fargs, isProcedural;
let hostnameMatches = hn => {
return hn === '' ||
reHostname.test(hn) ||
reEntity !== undefined && reEntity.test(hn);
};
for ( assetKey in listEntries ) {
entry = listEntries[assetKey];
let response = Object.create(null);
for ( let assetKey in listEntries ) {
let entry = listEntries[assetKey];
if ( entry === undefined ) { continue; }
content = extractBlocks(entry.content, 1000, 2000);
pos = 0;
found = undefined;
let content = extractBlocks(entry.content, 1000, 2000),
isProcedural,
found;
let pos = 0;
while ( (pos = content.indexOf(needle, pos)) !== -1 ) {
beg = content.lastIndexOf('\n', pos);
let beg = content.lastIndexOf('\n', pos);
if ( beg === -1 ) { beg = 0; }
end = content.indexOf('\n', pos);
let end = content.indexOf('\n', pos);
if ( end === -1 ) { end = content.length; }
pos = end;
fargs = JSON.parse(content.slice(beg, end));
let fargs = JSON.parse(content.slice(beg, end));
// https://github.com/gorhill/uBlock/issues/2763
if ( fargs[0] >= 0 && fargs[0] <= 5 && details.ignoreGeneric ) {
@ -179,7 +183,8 @@ var fromCosmeticFilter = function(details) {
}
switch ( fargs[0] ) {
case 0: // id-based
// Lowly generic cosmetic filters
case 0: // simple id-based
if (
fargs[1] === selector.slice(1) &&
selector.charAt(0) === '#'
@ -187,7 +192,7 @@ var fromCosmeticFilter = function(details) {
found = prefix + selector;
}
break;
case 2: // class-based
case 2: // simple class-based
if (
fargs[1] === selector.slice(1) &&
selector.charAt(0) === '.'
@ -195,19 +200,21 @@ var fromCosmeticFilter = function(details) {
found = prefix + selector;
}
break;
case 1: // id-based
case 3: // class-based
case 1: // complex id-based
case 3: // complex class-based
if ( fargs[2] === selector ) {
found = prefix + selector;
}
break;
case 4:
case 5:
case 7:
// Highly generic cosmetic filters
case 4: // simple highly generic
case 5: // complex highly generic
case 7: // generic exception
if ( fargs[1] === selector ) {
found = prefix + selector;
}
break;
// Specific cosmetic filtering
case 8:
if ( exception !== ((fargs[1] & 0b01) !== 0) ) { break; }
isProcedural = (fargs[1] & 0b10) !== 0;
@ -217,24 +224,29 @@ var fromCosmeticFilter = function(details) {
) {
break;
}
if (
fargs[2] === '' ||
reHostname.test(fargs[2]) === true ||
reEntity !== undefined && reEntity.test(fargs[2]) === true
) {
if ( hostnameMatches(fargs[2]) ) {
found = fargs[2] + prefix + selector;
}
break;
// Scriptlet injection
case 32:
case 64:
case 65:
if ( exception !== (fargs[1].charAt(0) === '!') ) { break; }
if ( fargs[3] !== selector ) { break; }
if ( hostnameMatches(fargs[2]) ) {
found = fargs[2] + prefix + selector;
}
break;
// HTML filtering
case 64: // CSS selector
case 65: // procdural
if ( exception !== (fargs[1].charAt(0) === '!') ) { break; }
if (
fargs[2] === '' ||
reHostname.test(fargs[2]) === true ||
reEntity !== undefined && reEntity.test(fargs[2]) === true
fargs[0] === 64 && fargs[3] !== selector ||
fargs[0] === 65 && JSON.parse(fargs[3]).raw !== selector
) {
break;
}
if ( hostnameMatches(fargs[2]) ) {
found = fargs[2] + prefix + selector;
}
break;