tslint-config-security/dist/rules/tsrDetectUnsafeCrossOriginCommunicationRule.js

TSLint security rules

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var tslib_1 = require("tslib");
var Lint = require("tslint");
var ts = require("typescript");
var Rule = (function (_super) {
    tslib_1.__extends(Rule, _super);
    function Rule() {
        return _super !== null && _super.apply(this, arguments) || this;
    }
    Rule.prototype.apply = function (sourceFile) {
        return this.applyWithFunction(sourceFile, walk);
    };
    Rule.metadata = {
        ruleName: 'tsr-detect-unsafe-cross-origin-communication',
        description: 'Warns when postMessage() API is used with the target "*" (no preference)',
        descriptionDetails: Lint.Utils.dedent(templateObject_1 || (templateObject_1 = tslib_1.__makeTemplateObject(["Any usage of postMessage() API with target \"*\" will trigger a warning.\n            See https://github.com/webschik/tslint-config-security#tsr-detect-unsafe-cross-origin-communication"], ["Any usage of postMessage() API with target \"*\" will trigger a warning.\n            See https://github.com/webschik/tslint-config-security#tsr-detect-unsafe-cross-origin-communication"]))),
        optionsDescription: '',
        options: null,
        type: 'functionality',
        requiresTypeInfo: false,
        typescriptOnly: false
    };
    return Rule;
}(Lint.Rules.AbstractRule));
exports.Rule = Rule;
function walk(ctx) {
    function visitNode(node) {
        if (node.kind === ts.SyntaxKind.CallExpression) {
            var _a = node, expression = _a.expression, args = _a.arguments;
            var name = expression.name;
            var _b = args || [], targetOrigin = _b[1];
            if (name &&
                targetOrigin &&
                name.text === 'postMessage' &&
                (targetOrigin.text || '').trim() === '*') {
                ctx.addFailureAtNode(node, 'Found a wildcard keyword (*) in the targetOrigin argument');
            }
        }
        return ts.forEachChild(node, visitNode);
    }
    return ts.forEachChild(ctx.sourceFile, visitNode);
}
var templateObject_1;