private static string LoadCFStringSymbol(IntPtr lib, string name)
{
using (SafeCFStringHandle cfString = new SafeCFStringHandle(LoadSymbol(lib, name), false))
{
Debug.Assert(!cfString.IsInvalid);
return(Interop.CoreFoundation.CFStringToString(cfString));
}
}
internal static string GetSecErrorString(int osStatus)
{
using (SafeCFStringHandle cfString = AppleCryptoNative_SecCopyErrorMessageString(osStatus))
{
if (cfString.IsInvalid)
{
return(null);
}
return(CoreFoundation.CFStringToString(cfString));
}
}
private string?GetString(IntPtr key)
{
IntPtr dictValue = CFDictionaryGetValue(_dictionary, key);
if (dictValue != IntPtr.Zero)
{
using (SafeCFStringHandle handle = new SafeCFStringHandle(dictValue, false))
{
return(CFStringToString(handle));
}
}
return(null);
}
internal static string CFStringToString(SafeCFStringHandle cfString)
{
Debug.Assert(cfString != null);
Debug.Assert(!cfString.IsInvalid);
Debug.Assert(!cfString.IsClosed);
// If the string is already stored internally as UTF-8 we can (usually)
// get the raw pointer to the data blob, then we can Marshal in the string
// via pointer semantics, avoiding a copy.
IntPtr interiorPointer = CFStringGetCStringPtr(
cfString,
CFStringBuiltInEncodings.kCFStringEncodingUTF8);
if (interiorPointer != IntPtr.Zero)
{
return(Marshal.PtrToStringUTF8(interiorPointer) !);
}
SafeCFDataHandle cfData = CFStringCreateExternalRepresentation(
IntPtr.Zero,
cfString,
CFStringBuiltInEncodings.kCFStringEncodingUTF8,
0);
using (cfData)
{
bool addedRef = false;
try
{
cfData.DangerousAddRef(ref addedRef);
unsafe
{
// Note that CFDataGetLength(cfData).ToInt32() will throw on
// too large of an input. Since a >2GB string is pretty unlikely,
// that's considered a good thing here.
return(Encoding.UTF8.GetString(
CFDataGetBytePtr(cfData),
CFDataGetLength(cfData).ToInt32()));
}
}
finally
{
if (addedRef)
{
cfData.DangerousRelease();
}
}
}
}
internal static string CFStringToString(SafeCFStringHandle cfString)
{
Debug.Assert(cfString != null);
Debug.Assert(!cfString.IsInvalid);
Debug.Assert(!cfString.IsClosed);
#if HAVE_PTRTOSTRINGUTF8
IntPtr interiorPointer = CFStringGetCStringPtr(
cfString,
CFStringBuiltInEncodings.kCFStringEncodingUTF8);
if (interiorPointer != IntPtr.Zero)
{
return(Marshal.PtrToStringUTF8(interiorPointer));
}
#endif
SafeCFDataHandle cfData = CFStringCreateExternalRepresentation(
IntPtr.Zero,
cfString,
CFStringBuiltInEncodings.kCFStringEncodingUTF8,
0);
using (cfData)
{
bool addedRef = false;
try
{
cfData.DangerousAddRef(ref addedRef);
unsafe
{
// Note that CFDataGetLength(cfData).ToInt32() will throw on
// too large of an input. Since a >2GB string is pretty unlikely,
// that's considered a good thing here.
return(Encoding.UTF8.GetString(
CFDataGetBytePtr(cfData),
CFDataGetLength(cfData).ToInt32()));
}
}
finally
{
if (addedRef)
{
cfData.DangerousRelease();
}
}
}
}
internal static string?GetErrorDescription(SafeCFErrorHandle cfError)
{
Debug.Assert(cfError != null);
if (cfError.IsInvalid)
{
return(null);
}
Debug.Assert(!cfError.IsClosed);
using (SafeCFStringHandle cfString = CFErrorCopyDescription(cfError))
{
return(CFStringToString(cfString));
}
}
private static partial SafeCFDataHandle CFStringCreateExternalRepresentation(
IntPtr alloc,
SafeCFStringHandle theString,
CFStringBuiltInEncodings encoding,
byte lossByte);
private static partial IntPtr CFStringGetCStringPtr(
SafeCFStringHandle cfString,
CFStringBuiltInEncodings encoding);
private static partial int AppleCryptoNative_X509GetSubjectSummary(
SafeSecCertificateHandle cert,
out SafeCFStringHandle cfSubjectSummaryOut);
