merge in CAA support
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commit
6093d772fc
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@ -49,8 +49,8 @@ var types = exports.DNS_TYPES = {
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};
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};
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// and in reverse
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// and in reverse
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for (var key in types) {
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Object.keys(types).forEach(function (key) {
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types[types[key]] = key;
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types[types[key]] = key;
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}
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});
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}('undefined' !== typeof window ? window : exports));
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}('undefined' !== typeof window ? window : exports));
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@ -1,6 +1,6 @@
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{
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{
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"name": "dns-suite",
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"name": "dns-suite",
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"version": "1.2.9",
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"version": "1.2.10",
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"description": "testing dns",
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"description": "testing dns",
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"main": "dns.js",
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"main": "dns.js",
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"homepage": "https://git.coolaj86.com/coolaj86/dns-suite.js",
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"homepage": "https://git.coolaj86.com/coolaj86/dns-suite.js",
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@ -0,0 +1,69 @@
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(function (exports) {
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'use strict';
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// RFC 6844
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// Explanation: https://tools.ietf.org/html/rfc6844#section-3
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// Binary Format: https://tools.ietf.org/html/rfc6844#section-5
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// Real-world Usage: https://support.dnsimple.com/articles/caa-record/
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// A Certification Authority Authorization (CAA) record is used to specify which
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// certificate authorities (CAs) are allowed to issue certificates for a domain.
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// Value Meaning/Use
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//
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// Flag An unsigned integer between 0-255.
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// It is currently used to represent the critical flag, that has a
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// specific meaning per RFC 6844
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// Tag An ASCII string that represents the identifier of the property
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// represented by the record.
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// Value The value associated with the tag.
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// The RFC currently defines 3 available tags:
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//
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// - issue: explicity authorizes a single certificate authority to issue a
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// certificate (any type) for the hostname.
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// - issuewild: explicity authorizes a single certificate authority to issue a
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// wildcard certificate (and only wildcard) for the hostname.
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// - iodef: specifies an URL to which a certificate authority may report
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// policy violations.
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exports.DNS_PACKER_TYPE_CAA = function (ab, dv, total, record) {
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if ('number' !== typeof record.flag || isNaN(record.flag) || record.flag < 0 || record.flag > 255) {
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console.log(record);
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throw new Error("bad CAA flag:", record.flag);
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}
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if ('string' !== typeof record.tag || !record.tag || record.tag.length > 255) {
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throw new Error("bad CAA tag:", record.tag);
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}
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if ('string' !== typeof record.value || !record.value) {
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throw new Error("bad CAA value:", record.value);
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}
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// RDLEN = flag (1 byte) + taglen (1 byte) + tagstr (taglen bytes) + valuestr (valuelen bytes)
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dv.setUint16(total, 1 + 1 + record.tag.length + record.value.length, false);
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total += 2;
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// FLAG
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dv.setUint8(total, record.flag, false);
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total += 1;
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// TAG LENGTH
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dv.setUint8(total, record.tag.length, false);
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total += 1;
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// TAG
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record.tag.split('').forEach(function (ch) {
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dv.setUint8(total, ch.charCodeAt(0), false);
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total += 1;
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});
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// VALUE
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record.value.split('').forEach(function (ch) {
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dv.setUint8(total, ch.charCodeAt(0), false);
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total += 1;
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});
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return total;
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};
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}('undefined' !== typeof window ? window : exports));
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@ -1,6 +1,9 @@
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(function (exports) {
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(function (exports) {
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'use strict';
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'use strict';
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// RFC 6844 https://tools.ietf.org/html/rfc6844#section-3
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// https://support.dnsimple.com/articles/caa-record/
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// A Certification Authority Authorization (CAA) record is used to specify which
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// A Certification Authority Authorization (CAA) record is used to specify which
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// certificate authorities (CAs) are allowed to issue certificates for a domain.
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// certificate authorities (CAs) are allowed to issue certificates for a domain.
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@ -26,13 +29,23 @@ exports.DNS_PARSER_TYPE_CAA = function (ab, packet, record) {
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var data = new Uint8Array(ab);
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var data = new Uint8Array(ab);
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var i = record.rdstart;
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var i = record.rdstart;
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var flag = data[i++];
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var flag = data[i];
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var mid = data[i++];
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var mid = data[i + 1];
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i += 2;
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mid += i;
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mid += i;
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var end = record.rdstart + record.rdlength;
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var end = record.rdstart + record.rdlength;
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var tag = '', value = '';
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var tag = '';
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while (i < mid) { tag += String.fromCharCode(data[i++]); }
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var value = '';
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while (i < end) { value += String.fromCharCode(data[i++]); }
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while (i < mid) {
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tag += String.fromCharCode(data[i]);
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i += 1;
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}
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while (i < end) {
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value += String.fromCharCode(data[i]);
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i += 1;
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}
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record.flag = flag;
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record.flag = flag;
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record.tag = tag;
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record.tag = tag;
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