Add DNS provider for CPanel and WHM (#1977)

.golangci.yml

@@ -237,3 +237,5 @@ issues:
       text: 'Duplicate words \(0\) found'
     - path: cmd/cmd_renew.go
       text: 'cyclomatic complexity 15 of func `renewForDomains` is high'
+    - path: providers/dns/cpanel/cpanel.go
+      text: 'cyclomatic complexity 13 of func `\(\*DNSProvider\)\.CleanUp` is high'

cmd/zz_gen_cmd_dnshelp.go

@@ -35,6 +35,7 @@ func allDNSCodes() string {
 		"cloudxns",
 		"conoha",
 		"constellix",
+		"cpanel",
 		"derak",
 		"desec",
 		"designate",
@@ -611,6 +612,31 @@ func displayDNSHelp(w io.Writer, name string) error {
 		ew.writeln()
 		ew.writeln(`More information: https://go-acme.github.io/lego/dns/constellix`)
 
+	case "cpanel":
+		// generated from: providers/dns/cpanel/cpanel.toml
+		ew.writeln(`Configuration for CPanel/WHM.`)
+		ew.writeln(`Code:	'cpanel'`)
+		ew.writeln(`Since:	'v4.16.0'`)
+		ew.writeln()
+
+		ew.writeln(`Credentials:`)
+		ew.writeln(`	- "CPANEL_BASE_URL":	API server URL`)
+		ew.writeln(`	- "CPANEL_NAMESERVER":	Nameserver`)
+		ew.writeln(`	- "CPANEL_TOKEN":	API token`)
+		ew.writeln(`	- "CPANEL_USERNAME":	username`)
+		ew.writeln()
+
+		ew.writeln(`Additional Configuration:`)
+		ew.writeln(`	- "CPANEL_HTTP_TIMEOUT":	API request timeout`)
+		ew.writeln(`	- "CPANEL_MODE":	use cpanel API or WHM API (Default: cpanel)`)
+		ew.writeln(`	- "CPANEL_POLLING_INTERVAL":	Time between DNS propagation check`)
+		ew.writeln(`	- "CPANEL_PROPAGATION_TIMEOUT":	Maximum waiting time for DNS propagation`)
+		ew.writeln(`	- "CPANEL_REGION":	The region`)
+		ew.writeln(`	- "CPANEL_TTL":	The TTL of the TXT record used for the DNS challenge`)
+
+		ew.writeln()
+		ew.writeln(`More information: https://go-acme.github.io/lego/dns/cpanel`)
+
 	case "derak":
 		// generated from: providers/dns/derak/derak.toml
 		ew.writeln(`Configuration for Derak Cloud.`)

docs/content/dns/zz_gen_cpanel.md

@@ -0,0 +1,86 @@
+---
+title: "CPanel/WHM"
+date: 2019-03-03T16:39:46+01:00
+draft: false
+slug: cpanel
+dnsprovider:
+  since:    "v4.16.0"
+  code:     "cpanel"
+  url:      "https://cpanel.net/"
+---
+
+<!-- THIS DOCUMENTATION IS AUTO-GENERATED. PLEASE DO NOT EDIT. -->
+<!-- providers/dns/cpanel/cpanel.toml -->
+<!-- THIS DOCUMENTATION IS AUTO-GENERATED. PLEASE DO NOT EDIT. -->
+
+
+Configuration for [CPanel/WHM](https://cpanel.net/).
+
+
+<!--more-->
+
+- Code: `cpanel`
+- Since: v4.16.0
+
+
+Here is an example bash command using the CPanel/WHM provider:
+
+```bash
+### CPANEL (default)
+
+CPANEL_USERNAME = "yyyy"
+CPANEL_TOKEN = "xxxx"
+CPANEL_BASE_URL = "https://example.com:2083" \
+CPANEL_NAMESERVER = "ns1.example.com:53" \
+lego --email you@example.com --dns cpanel --domains my.example.org run
+
+## WHM
+
+CPANEL_MODE = whm
+CPANEL_USERNAME = "yyyy"
+CPANEL_TOKEN = "xxxx"
+CPANEL_BASE_URL = "https://example.com:2087" \
+CPANEL_NAMESERVER = "ns1.example.com:53" \
+lego --email you@example.com --dns cpanel --domains my.example.org run
+```
+
+
+
+
+## Credentials
+
+| Environment Variable Name | Description |
+|-----------------------|-------------|
+| `CPANEL_BASE_URL` | API server URL |
+| `CPANEL_NAMESERVER` | Nameserver |
+| `CPANEL_TOKEN` | API token |
+| `CPANEL_USERNAME` | username |
+
+The environment variable names can be suffixed by `_FILE` to reference a file instead of a value.
+More information [here]({{< ref "dns#configuration-and-credentials" >}}).
+
+
+## Additional Configuration
+
+| Environment Variable Name | Description |
+|--------------------------------|-------------|
+| `CPANEL_HTTP_TIMEOUT` | API request timeout |
+| `CPANEL_MODE` | use cpanel API or WHM API (Default: cpanel) |
+| `CPANEL_POLLING_INTERVAL` | Time between DNS propagation check |
+| `CPANEL_PROPAGATION_TIMEOUT` | Maximum waiting time for DNS propagation |
+| `CPANEL_REGION` | The region |
+| `CPANEL_TTL` | The TTL of the TXT record used for the DNS challenge |
+
+The environment variable names can be suffixed by `_FILE` to reference a file instead of a value.
+More information [here]({{< ref "dns#configuration-and-credentials" >}}).
+
+
+
+
+## More information
+
+
+
+<!-- THIS DOCUMENTATION IS AUTO-GENERATED. PLEASE DO NOT EDIT. -->
+<!-- providers/dns/cpanel/cpanel.toml -->
+<!-- THIS DOCUMENTATION IS AUTO-GENERATED. PLEASE DO NOT EDIT. -->

docs/data/zz_cli_help.toml

@@ -137,7 +137,7 @@ To display the documentation for a specific DNS provider, run:
   $ lego dnshelp -c code
 
 Supported DNS providers:
-  acme-dns, alidns, allinkl, arvancloud, auroradns, autodns, azure, azuredns, bindman, bluecat, brandit, bunny, checkdomain, civo, clouddns, cloudflare, cloudns, cloudru, cloudxns, conoha, constellix, derak, desec, designate, digitalocean, dnshomede, dnsimple, dnsmadeeasy, dnspod, dode, domeneshop, dreamhost, duckdns, dyn, dynu, easydns, edgedns, efficientip, epik, exec, exoscale, freemyip, gandi, gandiv5, gcloud, gcore, glesys, godaddy, googledomains, hetzner, hostingde, hosttech, httpnet, httpreq, hurricane, hyperone, ibmcloud, iij, iijdpf, infoblox, infomaniak, internetbs, inwx, ionos, ipv64, iwantmyname, joker, liara, lightsail, linode, liquidweb, loopia, luadns, manual, metaname, mydnsjp, mythicbeasts, namecheap, namedotcom, namesilo, nearlyfreespeech, netcup, netlify, nicmanager, nifcloud, njalla, nodion, ns1, oraclecloud, otc, ovh, pdns, plesk, porkbun, rackspace, rcodezero, regru, rfc2136, rimuhosting, route53, safedns, sakuracloud, scaleway, selectel, servercow, simply, sonic, stackpath, tencentcloud, transip, ultradns, variomedia, vegadns, vercel, versio, vinyldns, vkcloud, vscale, vultr, webnames, websupport, wedos, yandex, yandex360, yandexcloud, zoneee, zonomi
+  acme-dns, alidns, allinkl, arvancloud, auroradns, autodns, azure, azuredns, bindman, bluecat, brandit, bunny, checkdomain, civo, clouddns, cloudflare, cloudns, cloudru, cloudxns, conoha, constellix, cpanel, derak, desec, designate, digitalocean, dnshomede, dnsimple, dnsmadeeasy, dnspod, dode, domeneshop, dreamhost, duckdns, dyn, dynu, easydns, edgedns, efficientip, epik, exec, exoscale, freemyip, gandi, gandiv5, gcloud, gcore, glesys, godaddy, googledomains, hetzner, hostingde, hosttech, httpnet, httpreq, hurricane, hyperone, ibmcloud, iij, iijdpf, infoblox, infomaniak, internetbs, inwx, ionos, ipv64, iwantmyname, joker, liara, lightsail, linode, liquidweb, loopia, luadns, manual, metaname, mydnsjp, mythicbeasts, namecheap, namedotcom, namesilo, nearlyfreespeech, netcup, netlify, nicmanager, nifcloud, njalla, nodion, ns1, oraclecloud, otc, ovh, pdns, plesk, porkbun, rackspace, rcodezero, regru, rfc2136, rimuhosting, route53, safedns, sakuracloud, scaleway, selectel, servercow, simply, sonic, stackpath, tencentcloud, transip, ultradns, variomedia, vegadns, vercel, versio, vinyldns, vkcloud, vscale, vultr, webnames, websupport, wedos, yandex, yandex360, yandexcloud, zoneee, zonomi
 
 More information: https://go-acme.github.io/lego/dns
 """