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Remove now irrelevant scoping

This commit is contained in:
Raymond Hill 2022-11-29 12:00:38 -05:00
parent 64909c671f
commit 15450e3957
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@ -32,278 +32,273 @@ import {
/******************************************************************************/ /******************************************************************************/
(( ) => { // Canonical name-uncloaking feature.
// https://github.com/uBlockOrigin/uBlock-issues/issues/407 let cnameUncloakEnabled = browser.dns instanceof Object;
if ( vAPI.webextFlavor.soup.has('firefox') === false ) { return; } let cnameUncloakProxied = false;
// Canonical name-uncloaking feature. // https://github.com/uBlockOrigin/uBlock-issues/issues/911
let cnameUncloakEnabled = browser.dns instanceof Object; // We detect here whether network requests are proxied, and if so,
let cnameUncloakProxied = false; // de-aliasing of hostnames will be disabled to avoid possible
// DNS leaks.
const proxyDetector = function(details) {
if ( details.proxyInfo instanceof Object ) {
cnameUncloakEnabled = false;
proxyDetectorTryCount = 0;
}
if ( proxyDetectorTryCount === 0 ) {
browser.webRequest.onHeadersReceived.removeListener(proxyDetector);
return;
}
proxyDetectorTryCount -= 1;
};
let proxyDetectorTryCount = 0;
// https://github.com/uBlockOrigin/uBlock-issues/issues/911 // Related issues:
// We detect here whether network requests are proxied, and if so, // - https://github.com/gorhill/uBlock/issues/1327
// de-aliasing of hostnames will be disabled to avoid possible // - https://github.com/uBlockOrigin/uBlock-issues/issues/128
// DNS leaks. // - https://bugzilla.mozilla.org/show_bug.cgi?id=1503721
const proxyDetector = function(details) {
if ( details.proxyInfo instanceof Object ) {
cnameUncloakEnabled = false;
proxyDetectorTryCount = 0;
}
if ( proxyDetectorTryCount === 0 ) {
browser.webRequest.onHeadersReceived.removeListener(proxyDetector);
return;
}
proxyDetectorTryCount -= 1;
};
let proxyDetectorTryCount = 0;
// Related issues: // Extend base class to normalize as per platform.
// - https://github.com/gorhill/uBlock/issues/1327
// - https://github.com/uBlockOrigin/uBlock-issues/issues/128
// - https://bugzilla.mozilla.org/show_bug.cgi?id=1503721
// Extend base class to normalize as per platform. vAPI.Net = class extends vAPI.Net {
constructor() {
vAPI.Net = class extends vAPI.Net { super();
constructor() { this.pendingRequests = [];
super(); this.canUncloakCnames = browser.dns instanceof Object;
this.pendingRequests = []; this.cnames = new Map([ [ '', null ] ]);
this.canUncloakCnames = browser.dns instanceof Object; this.cnameIgnoreList = null;
this.cnames = new Map([ [ '', null ] ]); this.cnameIgnore1stParty = true;
this.cnameIgnoreList = null; this.cnameIgnoreExceptions = true;
this.cnameIgnore1stParty = true; this.cnameIgnoreRootDocument = true;
this.cnameIgnoreExceptions = true; this.cnameMaxTTL = 120;
this.cnameIgnoreRootDocument = true; this.cnameReplayFullURL = false;
this.cnameMaxTTL = 120; this.cnameFlushTime = Date.now() + this.cnameMaxTTL * 60000;
this.cnameReplayFullURL = false; }
this.cnameFlushTime = Date.now() + this.cnameMaxTTL * 60000; setOptions(options) {
super.setOptions(options);
if ( 'cnameUncloakEnabled' in options ) {
cnameUncloakEnabled =
this.canUncloakCnames &&
options.cnameUncloakEnabled !== false;
} }
setOptions(options) { if ( 'cnameUncloakProxied' in options ) {
super.setOptions(options); cnameUncloakProxied = options.cnameUncloakProxied === true;
if ( 'cnameUncloakEnabled' in options ) { }
cnameUncloakEnabled = if ( 'cnameIgnoreList' in options ) {
this.canUncloakCnames && this.cnameIgnoreList =
options.cnameUncloakEnabled !== false; this.regexFromStrList(options.cnameIgnoreList);
} }
if ( 'cnameUncloakProxied' in options ) { if ( 'cnameIgnore1stParty' in options ) {
cnameUncloakProxied = options.cnameUncloakProxied === true; this.cnameIgnore1stParty =
} options.cnameIgnore1stParty !== false;
if ( 'cnameIgnoreList' in options ) { }
this.cnameIgnoreList = if ( 'cnameIgnoreExceptions' in options ) {
this.regexFromStrList(options.cnameIgnoreList); this.cnameIgnoreExceptions =
} options.cnameIgnoreExceptions !== false;
if ( 'cnameIgnore1stParty' in options ) { }
this.cnameIgnore1stParty = if ( 'cnameIgnoreRootDocument' in options ) {
options.cnameIgnore1stParty !== false; this.cnameIgnoreRootDocument =
} options.cnameIgnoreRootDocument !== false;
if ( 'cnameIgnoreExceptions' in options ) { }
this.cnameIgnoreExceptions = if ( 'cnameMaxTTL' in options ) {
options.cnameIgnoreExceptions !== false; this.cnameMaxTTL = options.cnameMaxTTL || 120;
} }
if ( 'cnameIgnoreRootDocument' in options ) { if ( 'cnameReplayFullURL' in options ) {
this.cnameIgnoreRootDocument = this.cnameReplayFullURL = options.cnameReplayFullURL === true;
options.cnameIgnoreRootDocument !== false; }
} this.cnames.clear(); this.cnames.set('', null);
if ( 'cnameMaxTTL' in options ) { this.cnameFlushTime = Date.now() + this.cnameMaxTTL * 60000;
this.cnameMaxTTL = options.cnameMaxTTL || 120; // https://github.com/uBlockOrigin/uBlock-issues/issues/911
} // Install/remove proxy detector.
if ( 'cnameReplayFullURL' in options ) { if ( vAPI.webextFlavor.major < 80 ) {
this.cnameReplayFullURL = options.cnameReplayFullURL === true; const wrohr = browser.webRequest.onHeadersReceived;
} if ( cnameUncloakEnabled === false || cnameUncloakProxied ) {
this.cnames.clear(); this.cnames.set('', null); if ( wrohr.hasListener(proxyDetector) ) {
this.cnameFlushTime = Date.now() + this.cnameMaxTTL * 60000; wrohr.removeListener(proxyDetector);
// https://github.com/uBlockOrigin/uBlock-issues/issues/911
// Install/remove proxy detector.
if ( vAPI.webextFlavor.major < 80 ) {
const wrohr = browser.webRequest.onHeadersReceived;
if ( cnameUncloakEnabled === false || cnameUncloakProxied ) {
if ( wrohr.hasListener(proxyDetector) ) {
wrohr.removeListener(proxyDetector);
}
} else if ( wrohr.hasListener(proxyDetector) === false ) {
wrohr.addListener(
proxyDetector,
{ urls: [ '*://*/*' ] },
[ 'blocking' ]
);
} }
proxyDetectorTryCount = 32; } else if ( wrohr.hasListener(proxyDetector) === false ) {
} wrohr.addListener(
} proxyDetector,
normalizeDetails(details) { { urls: [ '*://*/*' ] },
const type = details.type; [ 'blocking' ]
if ( type === 'imageset' ) {
details.type = 'image';
return;
}
// https://github.com/uBlockOrigin/uBlock-issues/issues/345
// Re-categorize an embedded object as a `sub_frame` if its
// content type is that of a HTML document.
if ( type === 'object' && Array.isArray(details.responseHeaders) ) {
for ( const header of details.responseHeaders ) {
if ( header.name.toLowerCase() === 'content-type' ) {
if ( header.value.startsWith('text/html') ) {
details.type = 'sub_frame';
}
break;
}
}
}
}
denormalizeTypes(types) {
if ( types.length === 0 ) {
return Array.from(this.validTypes);
}
const out = new Set();
for ( const type of types ) {
if ( this.validTypes.has(type) ) {
out.add(type);
}
if ( type === 'image' && this.validTypes.has('imageset') ) {
out.add('imageset');
}
if ( type === 'sub_frame' ) {
out.add('object');
}
}
return Array.from(out);
}
canonicalNameFromHostname(hn) {
const cnRecord = this.cnames.get(hn);
if ( cnRecord !== undefined && cnRecord !== null ) {
return cnRecord.cname;
}
}
processCanonicalName(hn, cnRecord, details) {
if ( cnRecord === null ) { return; }
if ( cnRecord.isRootDocument ) { return; }
const hnBeg = details.url.indexOf(hn);
if ( hnBeg === -1 ) { return; }
const oldURL = details.url;
let newURL = oldURL.slice(0, hnBeg) + cnRecord.cname;
const hnEnd = hnBeg + hn.length;
if ( this.cnameReplayFullURL ) {
newURL += oldURL.slice(hnEnd);
} else {
const pathBeg = oldURL.indexOf('/', hnEnd);
if ( pathBeg !== -1 ) {
newURL += oldURL.slice(hnEnd, pathBeg + 1);
}
}
details.url = newURL;
details.aliasURL = oldURL;
return super.onBeforeSuspendableRequest(details);
}
recordCanonicalName(hn, record, isRootDocument) {
if ( (this.cnames.size & 0b111111) === 0 ) {
const now = Date.now();
if ( now >= this.cnameFlushTime ) {
this.cnames.clear(); this.cnames.set('', null);
this.cnameFlushTime = now + this.cnameMaxTTL * 60000;
}
}
let cname =
typeof record.canonicalName === 'string' &&
record.canonicalName !== hn
? record.canonicalName
: '';
if (
cname !== '' &&
this.cnameIgnore1stParty &&
domainFromHostname(cname) === domainFromHostname(hn)
) {
cname = '';
}
if (
cname !== '' &&
this.cnameIgnoreList !== null &&
this.cnameIgnoreList.test(cname)
) {
cname = '';
}
const cnRecord = cname !== '' ? { cname, isRootDocument } : null;
this.cnames.set(hn, cnRecord);
return cnRecord;
}
regexFromStrList(list) {
if (
typeof list !== 'string' ||
list.length === 0 ||
list === 'unset' ||
browser.dns instanceof Object === false
) {
return null;
}
if ( list === '*' ) {
return /^./;
}
return new RegExp(
'(?:^|\.)(?:' +
list.trim()
.split(/\s+/)
.map(a => a.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'))
.join('|') +
')$'
);
}
onBeforeSuspendableRequest(details) {
const r = super.onBeforeSuspendableRequest(details);
if ( cnameUncloakEnabled === false ) { return r; }
if ( r !== undefined ) {
if (
r.cancel === true ||
r.redirectUrl !== undefined ||
this.cnameIgnoreExceptions
) {
return r;
}
}
const isRootDocument = details.type === 'main_frame' &&
this.cnameIgnoreRootDocument;
const hn = hostnameFromNetworkURL(details.url);
const cnRecord = this.cnames.get(hn);
if ( cnRecord !== undefined ) {
return this.processCanonicalName(hn, cnRecord, details);
}
return browser.dns.resolve(hn, [ 'canonical_name' ]).then(
rec => {
const cnRecord = this.recordCanonicalName(hn, rec, isRootDocument);
return this.processCanonicalName(hn, cnRecord, details);
},
( ) => {
this.cnames.set(hn, null);
}
);
}
suspendOneRequest(details) {
const pending = {
details: Object.assign({}, details),
resolve: undefined,
promise: undefined
};
pending.promise = new Promise(resolve => {
pending.resolve = resolve;
});
this.pendingRequests.push(pending);
return pending.promise;
}
unsuspendAllRequests(discard = false) {
const pendingRequests = this.pendingRequests;
this.pendingRequests = [];
for ( const entry of pendingRequests ) {
entry.resolve(
discard !== true
? this.onBeforeSuspendableRequest(entry.details)
: undefined
); );
} }
proxyDetectorTryCount = 32;
} }
static canSuspend() { }
return true; normalizeDetails(details) {
const type = details.type;
if ( type === 'imageset' ) {
details.type = 'image';
return;
} }
};
})(); // https://github.com/uBlockOrigin/uBlock-issues/issues/345
// Re-categorize an embedded object as a `sub_frame` if its
// content type is that of a HTML document.
if ( type === 'object' && Array.isArray(details.responseHeaders) ) {
for ( const header of details.responseHeaders ) {
if ( header.name.toLowerCase() === 'content-type' ) {
if ( header.value.startsWith('text/html') ) {
details.type = 'sub_frame';
}
break;
}
}
}
}
denormalizeTypes(types) {
if ( types.length === 0 ) {
return Array.from(this.validTypes);
}
const out = new Set();
for ( const type of types ) {
if ( this.validTypes.has(type) ) {
out.add(type);
}
if ( type === 'image' && this.validTypes.has('imageset') ) {
out.add('imageset');
}
if ( type === 'sub_frame' ) {
out.add('object');
}
}
return Array.from(out);
}
canonicalNameFromHostname(hn) {
const cnRecord = this.cnames.get(hn);
if ( cnRecord !== undefined && cnRecord !== null ) {
return cnRecord.cname;
}
}
processCanonicalName(hn, cnRecord, details) {
if ( cnRecord === null ) { return; }
if ( cnRecord.isRootDocument ) { return; }
const hnBeg = details.url.indexOf(hn);
if ( hnBeg === -1 ) { return; }
const oldURL = details.url;
let newURL = oldURL.slice(0, hnBeg) + cnRecord.cname;
const hnEnd = hnBeg + hn.length;
if ( this.cnameReplayFullURL ) {
newURL += oldURL.slice(hnEnd);
} else {
const pathBeg = oldURL.indexOf('/', hnEnd);
if ( pathBeg !== -1 ) {
newURL += oldURL.slice(hnEnd, pathBeg + 1);
}
}
details.url = newURL;
details.aliasURL = oldURL;
return super.onBeforeSuspendableRequest(details);
}
recordCanonicalName(hn, record, isRootDocument) {
if ( (this.cnames.size & 0b111111) === 0 ) {
const now = Date.now();
if ( now >= this.cnameFlushTime ) {
this.cnames.clear(); this.cnames.set('', null);
this.cnameFlushTime = now + this.cnameMaxTTL * 60000;
}
}
let cname =
typeof record.canonicalName === 'string' &&
record.canonicalName !== hn
? record.canonicalName
: '';
if (
cname !== '' &&
this.cnameIgnore1stParty &&
domainFromHostname(cname) === domainFromHostname(hn)
) {
cname = '';
}
if (
cname !== '' &&
this.cnameIgnoreList !== null &&
this.cnameIgnoreList.test(cname)
) {
cname = '';
}
const cnRecord = cname !== '' ? { cname, isRootDocument } : null;
this.cnames.set(hn, cnRecord);
return cnRecord;
}
regexFromStrList(list) {
if (
typeof list !== 'string' ||
list.length === 0 ||
list === 'unset' ||
browser.dns instanceof Object === false
) {
return null;
}
if ( list === '*' ) {
return /^./;
}
return new RegExp(
'(?:^|\.)(?:' +
list.trim()
.split(/\s+/)
.map(a => a.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'))
.join('|') +
')$'
);
}
onBeforeSuspendableRequest(details) {
const r = super.onBeforeSuspendableRequest(details);
if ( cnameUncloakEnabled === false ) { return r; }
if ( r !== undefined ) {
if (
r.cancel === true ||
r.redirectUrl !== undefined ||
this.cnameIgnoreExceptions
) {
return r;
}
}
const isRootDocument = details.type === 'main_frame' &&
this.cnameIgnoreRootDocument;
const hn = hostnameFromNetworkURL(details.url);
const cnRecord = this.cnames.get(hn);
if ( cnRecord !== undefined ) {
return this.processCanonicalName(hn, cnRecord, details);
}
return browser.dns.resolve(hn, [ 'canonical_name' ]).then(
rec => {
const cnRecord = this.recordCanonicalName(hn, rec, isRootDocument);
return this.processCanonicalName(hn, cnRecord, details);
},
( ) => {
this.cnames.set(hn, null);
}
);
}
suspendOneRequest(details) {
const pending = {
details: Object.assign({}, details),
resolve: undefined,
promise: undefined
};
pending.promise = new Promise(resolve => {
pending.resolve = resolve;
});
this.pendingRequests.push(pending);
return pending.promise;
}
unsuspendAllRequests(discard = false) {
const pendingRequests = this.pendingRequests;
this.pendingRequests = [];
for ( const entry of pendingRequests ) {
entry.resolve(
discard !== true
? this.onBeforeSuspendableRequest(entry.details)
: undefined
);
}
}
static canSuspend() {
return true;
}
};
/******************************************************************************/ /******************************************************************************/