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https://github.com/gorhill/uBlock.git
synced 2024-07-05 11:37:01 +02:00
Add version vararg to [...]-fetch-response scriptlets
If the `version` vararg is present and set to `2`, and if a fetch Request argument is present, it will be cloned before being matched to `propsToMatch` properties. Additionally, created a `.fn` version of `[...]-fetch-response` scriptlets to avoid redundant code in final injected scriptlets.
This commit is contained in:
Raymond Hill
parent
67f1d7de66
commit
d4918c1d0a
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@ -52,6 +52,7 @@ function safeSelf() {
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'RegExp': self.RegExp,
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'RegExp_test': self.RegExp.prototype.test,
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'RegExp_exec': self.RegExp.prototype.exec,
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'Request_clone': self.Request.prototype.clone,
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'XMLHttpRequest': self.XMLHttpRequest,
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'addEventListener': self.EventTarget.prototype.addEventListener,
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'removeEventListener': self.EventTarget.prototype.removeEventListener,
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@ -937,6 +938,188 @@ function matchObjectProperties(propNeedles, ...objs) {
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return true;
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}
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/******************************************************************************/
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builtinScriptlets.push({
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name: 'json-prune-fetch-response.fn',
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fn: jsonPruneFetchResponseFn,
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dependencies: [
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'match-object-properties.fn',
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'object-prune.fn',
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'parse-properties-to-match.fn',
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'safe-self.fn',
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'should-log.fn',
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],
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});
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function jsonPruneFetchResponseFn(
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rawPrunePaths = '',
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rawNeedlePaths = ''
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) {
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const safe = safeSelf();
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const extraArgs = safe.getExtraArgs(Array.from(arguments), 2);
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const logLevel = shouldLog({ log: rawPrunePaths === '' || extraArgs.log, });
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const log = logLevel ? ((...args) => { safe.uboLog(...args); }) : (( ) => { });
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const propNeedles = parsePropertiesToMatch(extraArgs.propsToMatch, 'url');
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const stackNeedle = safe.initPattern(extraArgs.stackToMatch || '', { canNegate: true });
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const applyHandler = function(target, thisArg, args) {
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const fetchPromise = Reflect.apply(target, thisArg, args);
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if ( logLevel === true ) {
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log('json-prune-fetch-response:', JSON.stringify(Array.from(args)).slice(1,-1));
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}
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if ( rawPrunePaths === '' ) { return fetchPromise; }
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let outcome = 'match';
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if ( propNeedles.size !== 0 ) {
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const objs = [ args[0] instanceof Object ? args[0] : { url: args[0] } ];
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if ( extraArgs.version === 2 && objs[0] instanceof Request ) {
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try { objs[0] = safe.Request_clone.call(objs[0]); } catch(ex) {}
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}
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if ( args[1] instanceof Object ) {
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objs.push(args[1]);
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}
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if ( matchObjectProperties(propNeedles, ...objs) === false ) {
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outcome = 'nomatch';
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}
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if ( outcome === logLevel || logLevel === 'all' ) {
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log(
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`json-prune-fetch-response (${outcome})`,
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`\n\tfetchPropsToMatch: ${JSON.stringify(Array.from(propNeedles)).slice(1,-1)}`,
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'\n\tprops:', ...args,
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);
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}
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}
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if ( outcome === 'nomatch' ) { return fetchPromise; }
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return fetchPromise.then(responseBefore => {
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const response = responseBefore.clone();
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return response.json().then(objBefore => {
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if ( typeof objBefore !== 'object' ) { return responseBefore; }
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const objAfter = objectPrune(
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objBefore,
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rawPrunePaths,
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rawNeedlePaths,
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stackNeedle,
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extraArgs
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);
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if ( typeof objAfter !== 'object' ) { return responseBefore; }
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const responseAfter = Response.json(objAfter, {
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status: responseBefore.status,
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statusText: responseBefore.statusText,
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headers: responseBefore.headers,
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});
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Object.defineProperties(responseAfter, {
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ok: { value: responseBefore.ok },
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redirected: { value: responseBefore.redirected },
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type: { value: responseBefore.type },
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url: { value: responseBefore.url },
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});
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return responseAfter;
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}).catch(reason => {
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log('json-prune-fetch-response:', reason);
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return responseBefore;
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});
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}).catch(reason => {
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log('json-prune-fetch-response:', reason);
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return fetchPromise;
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});
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};
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self.fetch = new Proxy(self.fetch, {
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apply: applyHandler
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});
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}
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/******************************************************************************/
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builtinScriptlets.push({
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name: 'replace-fetch-response.fn',
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fn: replaceFetchResponseFn,
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dependencies: [
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'match-object-properties.fn',
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'parse-properties-to-match.fn',
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'safe-self.fn',
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'should-log.fn',
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],
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});
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function replaceFetchResponseFn(
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trusted = false,
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pattern = '',
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replacement = '',
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propsToMatch = ''
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) {
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if ( trusted !== true ) { return; }
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const safe = safeSelf();
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const extraArgs = safe.getExtraArgs(Array.from(arguments), 4);
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const logLevel = shouldLog({
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log: pattern === '' || extraArgs.log,
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});
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const log = logLevel ? ((...args) => { safe.uboLog(...args); }) : (( ) => { });
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if ( pattern === '*' ) { pattern = '.*'; }
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const rePattern = safe.patternToRegex(pattern);
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const propNeedles = parsePropertiesToMatch(propsToMatch, 'url');
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self.fetch = new Proxy(self.fetch, {
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apply: function(target, thisArg, args) {
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if ( logLevel === true ) {
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log('replace-fetch-response:', JSON.stringify(Array.from(args)).slice(1,-1));
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}
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const fetchPromise = Reflect.apply(target, thisArg, args);
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if ( pattern === '' ) { return fetchPromise; }
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let outcome = 'match';
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if ( propNeedles.size !== 0 ) {
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const objs = [ args[0] instanceof Object ? args[0] : { url: args[0] } ];
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if ( extraArgs.version === 2 && objs[0] instanceof Request ) {
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try { objs[0] = safe.Request_clone.call(objs[0]); } catch(ex) {}
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}
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if ( args[1] instanceof Object ) {
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objs.push(args[1]);
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}
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if ( matchObjectProperties(propNeedles, ...objs) === false ) {
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outcome = 'nomatch';
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}
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if ( outcome === logLevel || logLevel === 'all' ) {
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log(
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`replace-fetch-response (${outcome})`,
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`\n\tpropsToMatch: ${JSON.stringify(Array.from(propNeedles)).slice(1,-1)}`,
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'\n\tprops:', ...args,
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);
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}
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}
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if ( outcome === 'nomatch' ) { return fetchPromise; }
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return fetchPromise.then(responseBefore => {
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const response = responseBefore.clone();
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return response.text().then(textBefore => {
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const textAfter = textBefore.replace(rePattern, replacement);
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const outcome = textAfter !== textBefore ? 'match' : 'nomatch';
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if ( outcome === logLevel || logLevel === 'all' ) {
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log(
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`replace-fetch-response (${outcome})`,
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`\n\tpattern: ${pattern}`,
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`\n\treplacement: ${replacement}`,
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);
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}
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if ( outcome === 'nomatch' ) { return responseBefore; }
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const responseAfter = new Response(textAfter, {
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status: responseBefore.status,
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statusText: responseBefore.statusText,
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headers: responseBefore.headers,
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});
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Object.defineProperties(responseAfter, {
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ok: { value: responseBefore.ok },
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redirected: { value: responseBefore.redirected },
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type: { value: responseBefore.type },
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url: { value: responseBefore.url },
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});
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return responseAfter;
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}).catch(reason => {
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log('replace-fetch-response:', reason);
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return responseBefore;
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});
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}).catch(reason => {
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log('replace-fetch-response:', reason);
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return fetchPromise;
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});
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}
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});
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}
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/*******************************************************************************
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Injectable scriptlets
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@ -1241,6 +1424,7 @@ builtinScriptlets.push({
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name: 'json-prune-fetch-response.js',
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fn: jsonPruneFetchResponse,
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dependencies: [
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'json-prune-fetch-response.fn',
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'match-object-properties.fn',
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'object-prune.fn',
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'parse-properties-to-match.fn',
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@ -1248,76 +1432,8 @@ builtinScriptlets.push({
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'should-log.fn',
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],
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});
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function jsonPruneFetchResponse(
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rawPrunePaths = '',
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rawNeedlePaths = ''
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) {
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const safe = safeSelf();
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const extraArgs = safe.getExtraArgs(Array.from(arguments), 2);
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const logLevel = shouldLog({ log: rawPrunePaths === '' || extraArgs.log, });
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const log = logLevel ? ((...args) => { safe.uboLog(...args); }) : (( ) => { });
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const propNeedles = parsePropertiesToMatch(extraArgs.propsToMatch, 'url');
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const stackNeedle = safe.initPattern(extraArgs.stackToMatch || '', { canNegate: true });
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const applyHandler = function(target, thisArg, args) {
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const fetchPromise = Reflect.apply(target, thisArg, args);
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if ( logLevel === true ) {
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log('json-prune-fetch-response:', JSON.stringify(Array.from(args)).slice(1,-1));
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}
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if ( rawPrunePaths === '' ) { return fetchPromise; }
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let outcome = 'match';
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if ( propNeedles.size !== 0 ) {
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const objs = [ args[0] instanceof Object ? args[0] : { url: args[0] } ];
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if ( args[1] instanceof Object ) {
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objs.push(args[1]);
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}
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if ( matchObjectProperties(propNeedles, ...objs) === false ) {
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outcome = 'nomatch';
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}
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if ( outcome === logLevel || logLevel === 'all' ) {
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log(
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`json-prune-fetch-response (${outcome})`,
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`\n\tfetchPropsToMatch: ${JSON.stringify(Array.from(propNeedles)).slice(1,-1)}`,
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'\n\tprops:', ...args,
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);
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}
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}
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if ( outcome === 'nomatch' ) { return fetchPromise; }
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return fetchPromise.then(responseBefore => {
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const response = responseBefore.clone();
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return response.json().then(objBefore => {
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if ( typeof objBefore !== 'object' ) { return responseBefore; }
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const objAfter = objectPrune(
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objBefore,
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rawPrunePaths,
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rawNeedlePaths,
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stackNeedle,
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extraArgs
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);
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if ( typeof objAfter !== 'object' ) { return responseBefore; }
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const responseAfter = Response.json(objAfter, {
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status: responseBefore.status,
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statusText: responseBefore.statusText,
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headers: responseBefore.headers,
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});
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Object.defineProperties(responseAfter, {
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ok: { value: responseBefore.ok },
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redirected: { value: responseBefore.redirected },
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type: { value: responseBefore.type },
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url: { value: responseBefore.url },
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});
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return responseAfter;
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}).catch(reason => {
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log('json-prune-fetch-response:', reason);
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return responseBefore;
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});
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}).catch(reason => {
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log('json-prune-fetch-response:', reason);
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return fetchPromise;
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});
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};
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self.fetch = new Proxy(self.fetch, {
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apply: applyHandler
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});
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function jsonPruneFetchResponse(...args) {
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jsonPruneFetchResponseFn(...args);
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}
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/******************************************************************************/
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@ -3661,86 +3777,11 @@ builtinScriptlets.push({
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requiresTrust: true,
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fn: trustedReplaceFetchResponse,
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dependencies: [
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'match-object-properties.fn',
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'parse-properties-to-match.fn',
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'safe-self.fn',
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'should-log.fn',
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'replace-fetch-response.fn',
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],
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});
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function trustedReplaceFetchResponse(
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pattern = '',
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replacement = '',
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propsToMatch = ''
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) {
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const safe = safeSelf();
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const extraArgs = safe.getExtraArgs(Array.from(arguments), 3);
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const logLevel = shouldLog({
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log: pattern === '' || extraArgs.log,
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});
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const log = logLevel ? ((...args) => { safe.uboLog(...args); }) : (( ) => { });
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if ( pattern === '*' ) { pattern = '.*'; }
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const rePattern = safe.patternToRegex(pattern);
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const propNeedles = parsePropertiesToMatch(propsToMatch, 'url');
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self.fetch = new Proxy(self.fetch, {
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apply: function(target, thisArg, args) {
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if ( logLevel === true ) {
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log('trusted-replace-fetch-response:', JSON.stringify(Array.from(args)).slice(1,-1));
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}
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const fetchPromise = Reflect.apply(target, thisArg, args);
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if ( pattern === '' ) { return fetchPromise; }
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let outcome = 'match';
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if ( propNeedles.size !== 0 ) {
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const objs = [ args[0] instanceof Object ? args[0] : { url: args[0] } ];
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if ( args[1] instanceof Object ) {
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objs.push(args[1]);
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}
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if ( matchObjectProperties(propNeedles, ...objs) === false ) {
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outcome = 'nomatch';
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}
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if ( outcome === logLevel || logLevel === 'all' ) {
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log(
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`trusted-replace-fetch-response (${outcome})`,
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`\n\tpropsToMatch: ${JSON.stringify(Array.from(propNeedles)).slice(1,-1)}`,
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'\n\tprops:', ...args,
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);
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}
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}
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if ( outcome === 'nomatch' ) { return fetchPromise; }
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return fetchPromise.then(responseBefore => {
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const response = responseBefore.clone();
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return response.text().then(textBefore => {
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const textAfter = textBefore.replace(rePattern, replacement);
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const outcome = textAfter !== textBefore ? 'match' : 'nomatch';
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if ( outcome === logLevel || logLevel === 'all' ) {
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log(
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`trusted-replace-fetch-response (${outcome})`,
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`\n\tpattern: ${pattern}`,
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`\n\treplacement: ${replacement}`,
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);
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}
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if ( outcome === 'nomatch' ) { return responseBefore; }
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const responseAfter = new Response(textAfter, {
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status: responseBefore.status,
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statusText: responseBefore.statusText,
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headers: responseBefore.headers,
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});
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Object.defineProperties(responseAfter, {
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ok: { value: responseBefore.ok },
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redirected: { value: responseBefore.redirected },
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type: { value: responseBefore.type },
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url: { value: responseBefore.url },
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});
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return responseAfter;
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}).catch(reason => {
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log('trusted-replace-fetch-response:', reason);
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return responseBefore;
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});
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}).catch(reason => {
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log('trusted-replace-fetch-response:', reason);
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return fetchPromise;
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});
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}
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});
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function trustedReplaceFetchResponse(...args) {
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replaceFetchResponseFn(true, ...args);
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}
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/******************************************************************************/
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