ddns: implement support for DYNV6.com

For dynv6.com to work correctly for setting DNS A record we need to
utilize the DynDNS API that is supported.  inadyn can handle this
via the 'custom' config (instead of dynv6 provider config).  The
config for inadyn looks like:

custom dynv6 {
	ddns-server = dynv6.com
	ddns-path = "/nic/update?hostname=%h&myip=%i"
	...
}

Update rc/services.c to handle this custom config, which is similar
to what is needed for WWW.NAMECHEAP.COM.

Signed-off-by: Kumar Gala <[email protected]>

release/src/router/rc/services.c

@@ -4148,6 +4148,10 @@ start_ddns(char *caller)
 	}
 	else if (strcmp(server, "WWW.NO-IP.COM") == 0)
 		service = "[email protected]";
+	else if (strcmp(server, "WWW.DYNV6.COM") == 0) {
+		service = "dynv6";
+		asus_ddns = 11;
+	}
 	else if (strcmp(server, "WWW.NAMECHEAP.COM")==0) {
 		service = "namecheap";
 		asus_ddns = 10;
@@ -4300,6 +4304,10 @@ start_ddns(char *caller)
 				fprintf(fp, "ddns-server = dynamicdns.park-your-domain.com\n");
 				// We store the domain.tld in the username nvram
 				fprintf(fp, "ddns-path = \"/update?domain=%%u&password=%%p&host=%%h\"\n");
+			} else if (asus_ddns == 11) {
+				fprintf(fp, "custom dynv6 {\n");
+				fprintf(fp, "ddns-server = dynv6.com\n");
+				fprintf(fp, "ddns-path = \"/nic/update?hostname=%%h&myip=%%i\"\n");
 			} else {
 				fprintf(fp, "provider %s {\n", service);
 			}

release/src/router/www/Advanced_ASUSDDNS_Content.asp

@@ -977,6 +977,7 @@ function check_unregister_result(){
 						<option value="WWW.TUNNELBROKER.NET" <% nvram_match("ddns_server_x", "WWW.TUNNELBROKER.NET","selected"); %>>WWW.TUNNELBROKER.NET</option>
 						<option value="WWW.NO-IP.COM" <% nvram_match("ddns_server_x", "WWW.NO-IP.COM","selected"); %>>WWW.NO-IP.COM</option>
 						<option value="WWW.ORAY.COM" <% nvram_match("ddns_server_x", "WWW.ORAY.COM","selected"); %>>WWW.ORAY.COM(花生壳)</option>
+						<option value="WWW.DYNV6.COM" <% nvram_match("ddns_server_x", "WWW.DYNV6.COM","selected"); %>>WWW.DYNV6.COM</option>
 						<option value="WWW.NAMECHEAP.COM" <% nvram_match("ddns_server_x", "WWW.NAMECHEAP.COM","selected"); %>>WWW.NAMECHEAP.COM</option>
 						<option value="FREEDNS.AFRAID.ORG" <% nvram_match("ddns_server_x", "FREEDNS.AFRAID.ORG","selected"); %>>FREEDNS.AFRAID.ORG</option>
 						<option value="CUSTOM" <% nvram_match("ddns_server_x", "CUSTOM","selected");  %>>Custom</option>

release/src/router/www/general.js

@@ -464,6 +464,8 @@ function openLink(s){
 			tourl = "https://www.no-ip.com/newUser.php";
 		else if (document.form.ddns_server_x.value == 'WWW.NAMECHEAP.COM')
 			tourl = "https://www.namecheap.com";
+		else if (document.form.ddns_server_x.value == 'WWW.DYNV6.COM')
+			tourl = "https://dynv6.com";
 		else if (document.form.ddns_server_x.value == "FREEDNS.AFRAID.ORG")
 			tourl = "https://freedns.afraid.org/";
 		else if (document.form.ddns_server_x.value == 'WWW.ORAY.COM')