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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
var common = require('../common');
var assert = require('assert');
var dns = require('dns'),
child_process = require('child_process');
// Try resolution without callback
assert.throws(function() {
dns.resolve('google.com', 'A');
});
assert.throws(function() {
dns.resolve('127.0.0.1', 'PTR');
});
var hosts = ['example.com',
'example.org',
'ietf.org', // AAAA
'google.com', // MX, multiple A records
'_xmpp-client._tcp.google.com', // SRV
'oakalynhall.co.uk' // Multiple PTR replies
];
var records = ['A', 'AAAA', 'MX', 'TXT', 'SRV'];
var i = hosts.length;
while (i--) {
var j = records.length;
while (j--) {
var hostCmd = 'dig -t ' + records[j] + ' ' + hosts[i] +
'| grep "^' + hosts[i] + '\\.\\W.*IN.*' + records[j] + '"' +
'| sed -E "s/[[:space:]]+/ /g" | cut -d " " -f 5- ' +
'| sed -e "s/\\.$//"';
child_process.exec(hostCmd, checkDnsRecord(hosts[i], records[j]));
}
}
// CNAME should resolve
dns.resolve('labs.nrcmedia.nl', 'CNAME', function(err, result) {
assert.deepEqual(result, ['nrcmedia.nl']);
});
// CNAME should not resolve
dns.resolve('nrcmedia.nl', 'CNAME', function(err, result) {
assert.ok(err.errno, dns.NODATA);
});
function checkDnsRecord(host, record) {
var myHost = host,
myRecord = record;
return function(err, stdout) {
var expected = [];
if (stdout.length)
expected = stdout.substr(0, stdout.length - 1).split('\n');
switch (myRecord) {
case 'A':
case 'AAAA':
dns.resolve(myHost, myRecord, function(error, result, ttl, cname) {
if (error) result = [];
cmpResults(expected, result, ttl, cname);
// do reverse lookup check
var ll = result.length;
while (ll--) {
var ip = result[ll];
var reverseCmd = 'host ' + ip +
'| cut -d " " -f 5-' +
'| sed -e "s/\\.$//"';
child_process.exec(reverseCmd, checkReverse(ip));
}
});
break;
case 'MX':
dns.resolve(myHost, myRecord, function(error, result, ttl, cname) {
if (error) result = [];
var strResult = [];
var ll = result.length;
while (ll--) {
strResult.push(result[ll].priority + ' ' + result[ll].exchange);
}
cmpResults(expected, strResult, ttl, cname);
});
break;
case 'TXT':
dns.resolve(myHost, myRecord, function(error, result, ttl, cname) {
if (error) result = [];
var strResult = [];
var ll = result.length;
while (ll--) {
strResult.push('"' + result[ll] + '"');
}
cmpResults(expected, strResult, ttl, cname);
});
break;
case 'SRV':
dns.resolve(myHost, myRecord, function(error, result, ttl, cname) {
if (error) result = [];
var strResult = [];
var ll = result.length;
while (ll--) {
strResult.push(result[ll].priority + ' ' +
result[ll].weight + ' ' +
result[ll].port + ' ' +
result[ll].name);
}
cmpResults(expected, strResult, ttl, cname);
});
break;
}
}
}
function checkReverse(ip) {
var myIp = ip;
return function(errr, stdout) {
var expected = stdout.substr(0, stdout.length - 1).split('\n');
var reversing = dns.reverse(myIp, function(error, domains, ttl, cname) {
if (error) domains = [];
cmpResults(expected, domains, ttl, cname);
});
}
}
function cmpResults(expected, result, ttl, cname) {
if (expected.length != result.length) {
if (expected.length == 1 &&
expected[0] == '3(NXDOMAIN)' &&
result.length == 0) {
// it's ok, dig returns NXDOMAIN, while dns module returns nothing
} else {
console.log('---WARNING---\nexpected ' + expected +
'\nresult ' + result + '\n-------------');
}
return;
}
expected.sort();
result.sort();
var ll = expected.length;
while (ll--) {
assert.equal(result[ll], expected[ll]);
console.log('Result ' + result[ll] +
' was equal to expected ' + expected[ll]);
}
}