freeCodeCamp/common/utils/encode-decode.js

47 lines
1.0 KiB
JavaScript

import flow from 'lodash/flow';
// we don't store loop protect disable key
export function removeNoprotect(val) {
return val.replace(/noprotect/gi, '');
}
export function encodeScriptTags(val) {
return val
.replace(/<script>/gi, 'fccss')
.replace(/<\/script>/gi, 'fcces');
}
export function decodeScriptTags(val) {
return val
.replace(/fccss/gi, '<script>')
.replace(/fcces/gi, '</script>');
}
export function encodeFormAction(val) {
return val.replace(
// look for attributes in a form
/<form[^>]*>/,
// val is the string within the opening form tag
// look for an `action` attribute, replace it with a fcc tag
val => val.replace(/action(\s*?)=/, 'fccfaa$1=')
);
}
export function decodeFormAction(val) {
return val.replace(
/<form[^>]*>/,
val => val.replace(/fccfaa(\s*?)=/, 'action$1=')
);
}
export const encodeFcc = flow([
removeNoprotect,
encodeFormAction,
encodeScriptTags
]);
export const decodeFcc = flow([
decodeFormAction,
decodeScriptTags
]);