public async Task <DomainEntity> RetrieveDomainDetailsAsync(string Id)
{
var domainId = Id;
if (_domainValidation.IsValidEmail(Id))
{
domainId = _domainValidation.DomainFromEmail(Id);
}
return(await _dbContext.DomainEntity.AsNoTracking().FirstOrDefaultAsync(x => x.Id == domainId));
}
public async Task <DomainEntity> Verify(string domain)
{
var domainToVerify = string.Empty;
var domainEntity = new DomainEntity();
if (_domainValidation.IsValidEmail(domain))
{
domainToVerify = _domainValidation.DomainFromEmail(domain);
}
if (_domainValidation.IsValidDomainName(domain))
{
domainToVerify = domain;
}
//Fill domain entity with domain details if domain was verified as domain
if (!string.IsNullOrEmpty(domainToVerify))
{
var client = new LookupClient
{
UseCache = true
};
var result = await client.QueryAsync(domainToVerify, QueryType.TXT);
var resultAnswer = result.Answers[0].ToString();
var spfRecord = resultAnswer.Substring(resultAnswer.IndexOf("\""))
.Replace("\"", "")
.Replace("\\", "")
.Split(";");
domainEntity.Id = domainToVerify;
var mxDomains = new StringBuilder();
//Add spf record details to domain entity, if a domain does not have this specified spf, then all these are null and domain is invalid
foreach (var item in spfRecord)
{
switch (item)
{
case string a when a.Contains("v="):
domainEntity.SpfVersion = item.Replace("v=", "");
break;
case string a when a.Contains("version"):
domainEntity.Version = item.Replace("version:", "");
break;
case string a when a.Contains("expire"):
domainEntity.ExpiryData = item.Replace("expire:", "");
break;
case string a when a.Contains("provider"):
domainEntity.Provider = item.Replace("provider:", "");
break;
case string a when a.Contains("ntamx"):
mxDomains.AppendLine(item.Replace("ntamx:", ""));
break;
default:
break;
}
}
domainEntity.NtaMxList = mxDomains.ToString();
var isValid = IsValidSpf(domainEntity);
domainEntity.IsValid = isValid ? "Valid" : "InValid";
}
return(domainEntity);
}
