/// <summary>
/// Clone
/// </summary>
/// <param name="model"></param>
/// <returns></returns>
public static EntityInfoModel Clone(this EntityInfoModel model)
{
if (model == null)
{
return(null);
}
return(new EntityInfoModel {
Addresses = model.Addresses?.ToList(),
Id = model.Id,
Name = model.Name,
Type = model.Type
});
}
/// <inheritdoc/>
public static IEnumerable <X509Extension> ToX509Extensions(this EntityInfoModel entity)
{
// Client/Server auth usage extension
yield return(new X509EnhancedKeyUsageExtension(
new OidCollection {
new Oid("1.3.6.1.5.5.7.3.1"),
new Oid("1.3.6.1.5.5.7.3.2")
}, true));
// Subject Alternative Name
var sanBuilder = new SubjectAlternativeNameBuilder();
if (entity.Uris != null)
{
foreach (var uri in entity.Uris)
{
sanBuilder.AddUri(new Uri(uri));
}
}
if (entity.Addresses != null)
{
foreach (var domainName in entity.Addresses)
{
if (string.IsNullOrWhiteSpace(domainName))
{
continue;
}
if (IPAddress.TryParse(domainName, out var ipAddr))
{
sanBuilder.AddIpAddress(ipAddr);
}
else
{
sanBuilder.AddDnsName(domainName);
}
// TODO: Parse email, principal, etc.
}
}
yield return(sanBuilder.Build());
}
/// <summary>
/// Validate entity
/// </summary>
/// <param name="model"></param>
/// <returns></returns>
public static EntityInfoModel Validate(this EntityInfoModel model)
{
var entity = model.Clone();
// parse the subject name if specified.
List <string> subjectNameEntries = null;
if (!string.IsNullOrEmpty(entity.SubjectName))
{
subjectNameEntries = CertUtils.ParseDistinguishedName(entity.SubjectName);
// enforce proper formatting for the subject name string
entity.SubjectName = string.Join(", ", subjectNameEntries);
}
// check the application name.
if (string.IsNullOrEmpty(entity.Name))
{
if (subjectNameEntries == null)
{
throw new ArgumentNullException(nameof(entity.Name),
"Must specify a name or a subjectName.");
}
// use the common name as the application name.
foreach (var entry in subjectNameEntries)
{
if (entry.StartsWith("CN=", StringComparison.InvariantCulture))
{
entity.Name = entry.Substring(3).Trim();
break;
}
}
}
if (string.IsNullOrEmpty(entity.Name))
{
throw new ArgumentNullException(nameof(entity.Name),
"Must specify a applicationName or a subjectName.");
}
// remove special characters from name.
var buffer = new StringBuilder();
foreach (var ch in entity.Name)
{
if (char.IsControl(ch) || ch == '/' || ch == ',' || ch == ';')
{
buffer.Append('+');
}
else
{
buffer.Append(ch);
}
}
entity.Name = buffer.ToString();
// create the subject name,
if (string.IsNullOrEmpty(entity.SubjectName))
{
entity.SubjectName = "CN=" + entity.Name;
}
entity.SubjectName = CertUtils.ValidateSubjectName(entity.SubjectName);
if (entity.Type != EntityType.User)
{
// ensure at least one uri
if (entity.Uris == null || entity.Uris.Count == 0)
{
if (entity.Addresses.Count > 0)
{
entity.Uris = new List <string> {
$"urn:{entity.Addresses[0]}:{entity.Name}"
};
}
else
{
throw new ArgumentNullException(nameof(entity.Uris),
"Must specify valid URLs.");
}
}
// Set dc if not exists
if (entity.Addresses != null && entity.Addresses.Count > 0)
{
if (!entity.SubjectName.Contains("DC=") && !entity.SubjectName.Contains("="))
{
entity.SubjectName += ", DC=" + entity.Addresses[0];
}
else
{
entity.SubjectName = CertUtils.ReplaceDCLocalhost(
entity.SubjectName, entity.Addresses[0]);
}
}
}
return(entity);
}
