/// <summary>
/// Adds a standard DNS entry into the dns cache
/// </summary>
/// <param name="domain"></param>
/// <param name="ip"></param>
/// <returns></returns>
private string AddDNSNameEntry(string domain, string ip)
{
//go to the deepest level possible:
string[] domainLevels = domain.Split('.').Reverse().ToArray();
DNSRecord deepestRecord = null;
for (int i = 1; i <= domainLevels.Length; i++)
{
deepestRecord = LookupByName(domainLevels.SubArray(0, i));
if (deepestRecord == null)
{
//get the previous record and then break.
deepestRecord = LookupByName(domainLevels.SubArray(0, i - 1));
break;
}
if (!deepestRecord.HasSubDomains())
{
break;
}
}
// start creating from the latest deepestRecord
if (deepestRecord != null)
{
int depthStartingIndex = Array.IndexOf(domainLevels, deepestRecord.Domain) + 1;
if (depthStartingIndex == domainLevels.Length - 1) //means the last item in the array
{
DNSRecord r = new DNSRecord
{
Domain = domainLevels[depthStartingIndex],
Address = ip
};
deepestRecord.SubDomains.Add(r);
SaveDomainNameTable();
return(r.ToString());
}
else if (depthStartingIndex == domainLevels.Length)
{
return($"Sub Domain {domainLevels[depthStartingIndex - 1]} already exists, please try editing instead of creating.");
}
else
{
return($"Missing subdomain record for {domainLevels[depthStartingIndex - 1]}.");
}
}
else
{
return("No proper domain name specified, please try again.");
}
}
/// <summary>
/// Reads the DNS entry's from the JSON stored file.
/// </summary>
public void LoadDomainNameTable()
{
//get the DNS records from a JSON file and put the data into the local DNS root record.
DNSRecord _root = JsonStorageHelper.GetStorageFileContents <DNSRecord>(RootDNSFileStorageName);
if (_root == null)
{
CreateDNSStructureFile();
LoadDomainNameTable();
return;
}
else if (_root.HasSubDomains())
{
Root.SubDomains = _root.SubDomains;
}
}