//
// Used only by client SSL code, never returns null.
//
internal override string[] GetRequestCertificateAuthorities(SafeDeleteContext securityContext)
{
string[] issuers = Array.Empty <string>();
object outObj;
int errorCode = SSPIWrapper.QueryContextIssuerList(GlobalSSPI.SSPISecureChannel, securityContext, out outObj);
GlobalLog.Assert(errorCode == 0, "QueryContextIssuerList returned errorCode:" + errorCode);
Interop.Secur32.IssuerListInfoEx issuerList = (Interop.Secur32.IssuerListInfoEx)outObj;
try
{
if (issuerList.cIssuers > 0)
{
unsafe
{
uint count = issuerList.cIssuers;
issuers = new string[issuerList.cIssuers];
Interop.Secur32._CERT_CHAIN_ELEMENT *pIL = (Interop.Secur32._CERT_CHAIN_ELEMENT *)issuerList.aIssuers.DangerousGetHandle();
for (int i = 0; i < count; ++i)
{
Interop.Secur32._CERT_CHAIN_ELEMENT *pIL2 = pIL + i;
GlobalLog.Assert(pIL2->cbSize > 0, "SecureChannel::GetIssuers()", "Interop.Secur32._CERT_CHAIN_ELEMENT size is not positive: " + pIL2->cbSize.ToString());
if (pIL2->cbSize > 0)
{
uint size = pIL2->cbSize;
byte * ptr = (byte *)(pIL2->pCertContext);
byte[] x = new byte[size];
for (int j = 0; j < size; j++)
{
x[j] = *(ptr + j);
}
X500DistinguishedName x500DistinguishedName = new X500DistinguishedName(x);
issuers[i] = x500DistinguishedName.Name;
GlobalLog.Print("SecureChannel#" + Logging.HashString(this) + "::GetIssuers() IssuerListEx[" + i + "]:" + issuers[i]);
}
}
}
}
}
finally
{
if (issuerList.aIssuers != null)
{
issuerList.aIssuers.Dispose();
}
}
return(issuers);
}