private static int DecodingMultiByteArrayHelper(BerSafeHandle berElement, char fmt, out byte[][] result)
{
int rc;
var ptrResult = IntPtr.Zero;
result = null;
try
{
rc = LdapNative.Instance.ber_scanf_ptr(berElement, new string(fmt, 1), ref ptrResult);
if (rc != -1 && ptrResult != IntPtr.Zero)
{
result = MarshalUtils.GetPointerArray(ptrResult)
.Select(MarshalUtils.GetBytes)
.Select(_ => _.ToArray())
.ToArray();
}
}
finally
{
if (ptrResult != IntPtr.Zero)
{
LdapNative.Instance.ber_memfree(ptrResult);
}
}
return(rc);
}
private LdapSearchResultReference GetLdapReference(SafeHandle ld, IntPtr msg)
{
var ctrls = IntPtr.Zero;
try
{
var referencePtr = IntPtr.Zero;
var rc = Native.ldap_parse_reference(ld, msg, ref referencePtr, ref ctrls, 0);
Native.ThrowIfError(ld, rc, nameof(Native.ldap_parse_reference));
var arr = MarshalUtils.GetPointerArray(referencePtr);
var uris = arr.Select(_ => new Uri(Encoder.Instance.PtrToString(_))).ToArray();
if (uris.Any())
{
return(new LdapSearchResultReference(uris, null));
}
}
finally
{
if (ctrls != IntPtr.Zero)
{
Native.ldap_controls_free(ctrls);
}
}
return(null);
}
private static void FreeAttributes(IntPtr attributes)
{
foreach (var tempPtr in MarshalUtils.GetPointerArray(attributes))
{
Marshal.FreeHGlobal(tempPtr);
}
Marshal.FreeHGlobal(attributes);
}
private static void FreeControls(IntPtr controlArray)
{
foreach (var ptr in MarshalUtils.GetPointerArray(controlArray))
{
var ctrl = Marshal.PtrToStructure <Native.Native.LdapControl>(ptr);
FreeManagedControl(ctrl);
}
MarshalUtils.FreeIntPtrArray(controlArray);
}
public void MarshalUtils_StringArrayToPtr_Returns_Ptr_To_StringArray(params string[] data)
{
var actual = Marshal.AllocHGlobal(IntPtr.Size * (data.Length + 1));
MarshalUtils.StringArrayToPtr(data, actual);
Marshal.WriteIntPtr(actual, IntPtr.Size * (data.Length), IntPtr.Zero);
var actualData = MarshalUtils.GetPointerArray(actual)
.Select(Encoder.Instance.PtrToString)
.ToList();
Marshal.FreeHGlobal(actual);
Assert.Equal(data, actualData);
}
private static int EncodingBerValMultiByteArrayHelper(BerSafeHandle berElement, char fmt, byte[][] value)
{
var berValArray = IntPtr.Zero;
Native.Native.SafeBerval[] managedBerVal = null;
int rc;
try
{
if (value != null)
{
berValArray = MarshalUtils.AllocHGlobalIntPtrArray(value.Length + 1);
var structSize = Marshal.SizeOf(typeof(Native.Native.SafeBerval));
managedBerVal = new Native.Native.SafeBerval[value.Length];
for (var i = 0; i < value.Length; i++)
{
var byteArray = value[i];
// construct the managed berval
managedBerVal[i] = new Native.Native.SafeBerval();
if (byteArray == null)
{
managedBerVal[i].bv_len = 0;
managedBerVal[i].bv_val = IntPtr.Zero;
}
else
{
managedBerVal[i].bv_len = byteArray.Length;
managedBerVal[i].bv_val = Marshal.AllocHGlobal(byteArray.Length);
if (managedBerVal[i].bv_val != IntPtr.Zero)
{
Marshal.Copy(byteArray, 0, managedBerVal[i].bv_val, byteArray.Length);
}
}
// allocate memory for the unmanaged structure
var valPtr = Marshal.AllocHGlobal(structSize);
Marshal.StructureToPtr(managedBerVal[i], valPtr, false);
Marshal.WriteIntPtr(berValArray, IntPtr.Size * i, valPtr);
}
Marshal.WriteIntPtr(berValArray, IntPtr.Size * value.Length, IntPtr.Zero);
}
rc = LdapNative.Instance.ber_printf_berarray(berElement, new string(fmt, 1), berValArray);
GC.KeepAlive(managedBerVal);
}
finally
{
if (berValArray != IntPtr.Zero)
{
foreach (var ptr in MarshalUtils.GetPointerArray(berValArray))
{
Marshal.FreeHGlobal(ptr);
}
Marshal.FreeHGlobal(berValArray);
}
}
return(rc);
}