dmarc-solution/dist/bin/parser.js

One stop solution for all DMARC Problems. This package includes fetching of dmarc record, parsing the provided/fetched record, validation of DMARC record, generating a new DMARC record

"use strict";
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                case 0: case 1: t = op; break;
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exports.__esModule = true;
exports.parser = void 0;
var dns_1 = require("dns");
var validator_1 = require("./validator");
var dns = new dns_1.promises.Resolver();
var parser = function (policy) { return __awaiter(void 0, void 0, void 0, function () {
    var terms, rules, retval, _i, rules_1, rule, term, value, found, _a, _b, validatorTerm, settings, termRegex, tag;
    return __generator(this, function (_c) {
        terms = policy
            .split(/;/)
            .map(function (t) { return t.trim(); }) // Trim surrounding whitespace
            .filter(function (x) { return x !== ""; });
        rules = terms.map(function (x) { return x.split(/[=]/).map(function (p) { return p.trim(); }); });
        retval = {
            tags: {},
            messages: []
        };
        // Make sure `v` is the first tag
        if (!/^v$/i.test(rules[0][0])) {
            retval.messages.push("First tag in a DMARC policy must be 'v', but found: '".concat(rules[0][0], "'"));
            return [2 /*return*/, retval];
        }
        for (_i = 0, rules_1 = rules; _i < rules_1.length; _i++) {
            rule = rules_1[_i];
            term = rule[0];
            value = rule[1];
            found = false;
            for (_a = 0, _b = Object.keys(validator_1.validators); _a < _b.length; _a++) {
                validatorTerm = _b[_a];
                settings = validator_1.validators[validatorTerm];
                // Term matches validaor
                debugger;
                termRegex = new RegExp("^".concat(validatorTerm, "$"), "i");
                if (termRegex.test(term)) {
                    found = true;
                    tag = {
                        // tag: term,
                        description: settings.description
                    };
                    if (settings.validate) {
                        try {
                            settings.validate.call(settings, term, value);
                            tag.value = value;
                            retval.tags[term] = tag;
                        }
                        catch (err) {
                            retval.messages.push(err.message);
                        }
                    }
                    break;
                }
            }
            if (!found) {
                retval.messages.push("Unknown tag '".concat(term, "'"));
            }
        }
        // Remove "messages"
        if (retval.messages.length === 0) {
            delete retval.messages;
        }
        return [2 /*return*/, retval];
    });
}); };
exports.parser = parser;