Implement specify Port for DNS Monitor #1059

This commit should fully implement #1059. When the user selects the DNS
monitor option, a new input box has been added below the resolver
address allowing the user to implement the port to access the resolver
on. This uses the same `monitor.port` as the TCP monitor but a monitor
has been added to prefill the port value to the default of `53` if the
value in this field has not already been set. This is then cleared if
the user selects a different monitor type and has not changed the port
value. A translation has also been added explaining what this field
does in order to reduce any confusion. JSDoc documentation has also been
added to the `dnsResolve` function in `util-server.js`.

Signed-off-by: Matthew Nickson <mnickson@sidingsmedia.com>
This commit is contained in:
Matthew Nickson 2022-04-13 21:02:19 +01:00
parent e38742a2d0
commit b893d50e45
No known key found for this signature in database
GPG Key ID: BF229DCFD4748E05
4 changed files with 30 additions and 3 deletions

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@ -249,7 +249,7 @@ class Monitor extends BeanModel {
let startTime = dayjs().valueOf();
let dnsMessage = "";
let dnsRes = await dnsResolve(this.hostname, this.dns_resolve_server, this.dns_resolve_type);
let dnsRes = await dnsResolve(this.hostname, this.dns_resolve_server, this.port, this.dns_resolve_type);
bean.ping = dayjs().valueOf() - startTime;
if (this.dns_resolve_type == "A" || this.dns_resolve_type == "AAAA" || this.dns_resolve_type == "TXT") {

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@ -89,9 +89,17 @@ exports.pingAsync = function (hostname, ipv6 = false) {
});
};
exports.dnsResolve = function (hostname, resolver_server, rrtype) {
/**
* Resolves a given record using the specified DNS server
* @param {string} hostname The hostname of the record to lookup
* @param {string} resolver_server The DNS server to use
* @param {string} resolver_port The port the DNS server is listening on
* @param {string} rrtype The type of record to request
* @returns {Promise} Promise object represents DNS lookup result
*/
exports.dnsResolve = function (hostname, resolver_server, resolver_port, rrtype) {
const resolver = new Resolver();
resolver.setServers([resolver_server]);
resolver.setServers([`${resolver_server}:${resolver_port}`]);
return new Promise((resolve, reject) => {
if (rrtype == "PTR") {
resolver.reverse(hostname, (err, records) => {

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@ -14,6 +14,7 @@ export default {
deleteMonitorMsg: "Are you sure want to delete this monitor?",
deleteNotificationMsg: "Are you sure want to delete this notification for all monitors?",
resoverserverDescription: "Cloudflare is the default server. You can change the resolver server anytime.",
dnsPortDescription: "DNS server port. Defaults to 53. You can change the port at any time.",
rrtypeDescription: "Select the RR type you want to monitor",
pauseMonitorMsg: "Are you sure want to pause?",
enableDefaultNotificationDescription: "This notification will be enabled by default for new monitors. You can still disable the notification separately for each monitor.",

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@ -91,6 +91,15 @@
</div>
</div>
<!-- Port -->
<div class="my-3">
<label for="port" class="form-label">{{ $t("Port") }}</label>
<input id="port" v-model="monitor.port" type="number" class="form-control" required min="0" max="65535" step="1">
<div class="form-text">
{{ $t("dnsPortDescription") }}
</div>
</div>
<div class="my-3">
<label for="dns_resolve_type" class="form-label">{{ $t("Resource Record Type") }}</label>
@ -386,6 +395,15 @@ export default {
this.monitor.pushToken = genSecret(10);
}
}
// Set default port for DNS if not already defined
if (! this.monitor.port || this.monitor.port === "53") {
if (this.monitor.type === "dns") {
this.monitor.port = "53";
} else {
this.monitor.port = "";
}
}
}
},