private static Interop.LUID GetLogonAuthId(SafeAccessTokenHandle safeTokenHandle)
{
using (SafeLocalAllocHandle pStatistics = GetTokenInformation(safeTokenHandle, TokenInformationClass.TokenStatistics))
{
Interop.TOKEN_STATISTICS statistics = pStatistics.Read <Interop.TOKEN_STATISTICS>(0);
return(statistics.AuthenticationId);
}
}
internal SignerInfo(SignedCms signedCms, SafeLocalAllocHandle pbCmsgSignerInfo)
{
this.m_signedCms = signedCms;
this.m_parentSignerInfo = (SignerInfo)null;
this.m_encodedSignerInfo = (byte[])null;
this.m_pbCmsgSignerInfo = pbCmsgSignerInfo;
this.m_cmsgSignerInfo = (CAPI.CMSG_SIGNER_INFO)Marshal.PtrToStructure(pbCmsgSignerInfo.DangerousGetHandle(), typeof(CAPI.CMSG_SIGNER_INFO));
}
internal KeyAgreeRecipientInfo(SafeLocalAllocHandle pRecipientInfo, CAPI.CMSG_KEY_AGREE_PUBLIC_KEY_RECIPIENT_INFO publicKeyRecipient, uint index, uint subIndex) : base(RecipientInfoType.KeyAgreement, RecipientSubType.PublicKeyAgreement, pRecipientInfo, publicKeyRecipient, index)
{
checked {
IntPtr pEncryptedKeyInfo = Marshal.ReadIntPtr(new IntPtr((long)publicKeyRecipient.rgpRecipientEncryptedKeys + (long)(subIndex * Marshal.SizeOf(typeof(IntPtr)))));
CAPI.CMSG_RECIPIENT_ENCRYPTED_KEY_INFO encryptedKeyInfo = (CAPI.CMSG_RECIPIENT_ENCRYPTED_KEY_INFO)Marshal.PtrToStructure(pEncryptedKeyInfo, typeof(CAPI.CMSG_RECIPIENT_ENCRYPTED_KEY_INFO));
Reset(CAPI.CMSG_KEY_AGREE_ORIGINATOR_PUBLIC_KEY, publicKeyRecipient.dwVersion, encryptedKeyInfo, subIndex);
}
}
// Releases the unmanaged memory after ping completion.
private void FreeUnmanagedStructures()
{
if (_requestBuffer != null)
{
_requestBuffer.Dispose();
_requestBuffer = null;
}
}
internal static extern bool CryptDecodeObjectEx(CertificateEncodingType encodingType,
[MarshalAs(UnmanagedType.LPStr)] string lpszStructType,
IntPtr pbEncoded, // BYTE[cbEncoded]
int cbEncoded,
DecodeObjectFlags flags,
IntPtr pDecodPara, // PCRYPT_DECODE_PARA
[Out] out SafeLocalAllocHandle pvStructInfo,
[In, Out] ref int pcbStructInfo);
internal static NetworkInterface[] GetNetworkInterfaces()
{
Contract.Ensures(Contract.Result <NetworkInterface[]>() != null);
AddressFamily family = AddressFamily.Unspecified;
uint bufferSize = 0;
SafeLocalAllocHandle buffer = null;
// TODO: #2485: This will probably require changes in the PAL for HostInformation.
Interop.IpHlpApi.FIXED_INFO fixedInfo = HostInformationPal.GetFixedInfo();
List <SystemNetworkInterface> interfaceList = new List <SystemNetworkInterface>();
Interop.IpHlpApi.GetAdaptersAddressesFlags flags =
Interop.IpHlpApi.GetAdaptersAddressesFlags.IncludeGateways
| Interop.IpHlpApi.GetAdaptersAddressesFlags.IncludeWins;
// Figure out the right buffer size for the adapter information.
uint result = Interop.IpHlpApi.GetAdaptersAddresses(
family, (uint)flags, IntPtr.Zero, SafeLocalAllocHandle.Zero, ref bufferSize);
while (result == Interop.IpHlpApi.ERROR_BUFFER_OVERFLOW)
{
// Allocate the buffer and get the adapter info.
using (buffer = SafeLocalAllocHandle.LocalAlloc((int)bufferSize))
{
result = Interop.IpHlpApi.GetAdaptersAddresses(
family, (uint)flags, IntPtr.Zero, buffer, ref bufferSize);
// If succeeded, we're going to add each new interface.
if (result == Interop.IpHlpApi.ERROR_SUCCESS)
{
// Linked list of interfaces.
IntPtr ptr = buffer.DangerousGetHandle();
while (ptr != IntPtr.Zero)
{
// Traverse the list, marshal in the native structures, and create new NetworkInterfaces.
Interop.IpHlpApi.IpAdapterAddresses adapterAddresses = Marshal.PtrToStructure <Interop.IpHlpApi.IpAdapterAddresses>(ptr);
interfaceList.Add(new SystemNetworkInterface(fixedInfo, adapterAddresses));
ptr = adapterAddresses.next;
}
}
}
}
// If we don't have any interfaces detected, return empty.
if (result == Interop.IpHlpApi.ERROR_NO_DATA || result == Interop.IpHlpApi.ERROR_INVALID_PARAMETER)
{
return(new SystemNetworkInterface[0]);
}
// Otherwise we throw on an error.
if (result != Interop.IpHlpApi.ERROR_SUCCESS)
{
throw new NetworkInformationException((int)result);
}
return(interfaceList.ToArray());
}
internal static extern bool CryptDecodeObjectEx(
[In] uint dwCertEncodingType,
[In] IntPtr lpszStructType,
[In] byte[] pbEncoded,
[In] uint cbEncoded,
[In] uint dwFlags,
[In] IntPtr pDecodePara,
[Out] out SafeLocalAllocHandle pvStructInfo,
[Out] out uint pcbStructInfo);
/// <summary>Allocates unmanaged memory.</summary>
/// <param name="size">Number of bytes to allocate.</param>
/// <returns>A handle to the newly allocated memory object.</returns>
public static SafeLocalAllocHandle LocalAlloc(int size)
{
SafeLocalAllocHandle handle = LocalAlloc(0, new IntPtr(size));
if (handle.IsInvalid)
{
throw new OutOfMemoryException();
}
return(handle);
}
// Copies _requestBuffer into unmanaged memory for async icmpsendecho APIs.
private unsafe void SetUnmanagedStructures(byte[] buffer)
{
_requestBuffer = SafeLocalAllocHandle.LocalAlloc(buffer.Length);
byte *dst = (byte *)_requestBuffer.DangerousGetHandle();
for (int i = 0; i < buffer.Length; ++i)
{
dst[i] = buffer[i];
}
}
internal SignerInfo(SignedCms signedCms, SafeLocalAllocHandle pbCmsgSignerInfo)
{
// Sanity check.
Debug.Assert(signedCms != null && pbCmsgSignerInfo != null && !pbCmsgSignerInfo.IsInvalid);
m_signedCms = signedCms;
m_parentSignerInfo = null;
m_encodedSignerInfo = null;
m_pbCmsgSignerInfo = pbCmsgSignerInfo;
m_cmsgSignerInfo = (CAPI.CMSG_SIGNER_INFO)Marshal.PtrToStructure(pbCmsgSignerInfo.DangerousGetHandle(), typeof(CAPI.CMSG_SIGNER_INFO));
}
private static SafeLocalAllocHandle SafeLocalAlloc(int uFlags, uint size)
{
SafeLocalAllocHandle result = LocalAlloc(uFlags, (UIntPtr)size);
if (result == null || result.IsInvalid)
{
throw new OutOfMemoryException();
}
result.Initialize(size);
return(result);
}
internal RecipientInfo(RecipientInfoType recipientInfoType, RecipientSubType recipientSubType, SafeLocalAllocHandle pCmsgRecipientInfo, object cmsgRecipientInfo, uint index)
{
if (recipientInfoType < RecipientInfoType.Unknown || recipientInfoType > RecipientInfoType.KeyAgreement)
recipientInfoType = RecipientInfoType.Unknown;
if (recipientSubType < RecipientSubType.Unknown || recipientSubType > RecipientSubType.PublicKeyAgreement)
recipientSubType = RecipientSubType.Unknown;
this.m_recipentInfoType = recipientInfoType;
this.m_recipientSubType = recipientSubType;
this.m_pCmsgRecipientInfo = pCmsgRecipientInfo;
this.m_cmsgRecipientInfo = cmsgRecipientInfo;
this.m_index = index;
}
/// <summary>
/// Get a property from the current token
/// </summary>
private T GetTokenInformation <T>(TokenInformationClass tokenInformationClass) where T : struct
{
Debug.Assert(!_safeTokenHandle.IsInvalid && !_safeTokenHandle.IsClosed, "!m_safeTokenHandle.IsInvalid && !m_safeTokenHandle.IsClosed");
using (SafeLocalAllocHandle information = GetTokenInformation(_safeTokenHandle, tokenInformationClass))
{
Debug.Assert(information.ByteLength >= (ulong)Marshal.SizeOf <T>(),
"information.ByteLength >= (ulong)Marshal.SizeOf(typeof(T))");
return(information.Read <T>(0));
}
}
[System.Security.SecurityCritical] // auto-generated
internal UNICODE_INTPTR_STRING(int stringBytes, SafeLocalAllocHandle buffer)
{
Debug.Assert(buffer == null || (stringBytes >= 0 && (ulong)stringBytes <= buffer.ByteLength),
"buffer == null || (stringBytes >= 0 && stringBytes <= buffer.ByteLength)");
this.Length = (ushort)stringBytes;
this.MaxLength = (ushort)buffer.ByteLength;
// Marshaling with a SafePointer does not work correctly, so unfortunately we need to extract
// the raw handle here.
this.Buffer = buffer.DangerousGetHandle();
}
// Private callback invoked when icmpsendecho APIs succeed.
private void PingCallback()
{
TaskCompletionSource <PingReply> tcs = _taskCompletionSource;
_taskCompletionSource = null;
PingReply reply = null;
Exception error = null;
try
{
lock (_lockObject)
{
// Parse reply buffer.
SafeLocalAllocHandle buffer = _replyBuffer;
// Marshals and constructs new reply.
if (_ipv6)
{
Interop.IpHlpApi.Icmp6EchoReply icmp6Reply = Marshal.PtrToStructure <Interop.IpHlpApi.Icmp6EchoReply>(buffer.DangerousGetHandle());
reply = CreatePingReplyFromIcmp6EchoReply(icmp6Reply, buffer.DangerousGetHandle(), _sendSize);
}
else
{
Interop.IpHlpApi.IcmpEchoReply icmpReply = Marshal.PtrToStructure <Interop.IpHlpApi.IcmpEchoReply>(buffer.DangerousGetHandle());
reply = CreatePingReplyFromIcmpEchoReply(icmpReply);
}
}
}
catch (Exception e)
{
// In case of failure, create a failed event arg.
error = new PingException(SR.net_ping, e);
}
finally
{
FreeUnmanagedStructures();
UnregisterWaitHandle();
Finish();
}
// Once we've called Finish, complete the task
if (reply != null)
{
tcs.SetResult(reply);
}
else
{
Debug.Assert(error != null);
tcs.SetException(error);
}
}
/// <summary>
/// Convert each Oid's value to an ASCII string, then create an unmanaged array of "numOids" LPSTR pointers, one for each Oid.
/// "numOids" is the number of LPSTR pointers. This is normally the same as oids.Count, except in the case where a malicious caller
/// appends to the OidCollection while this method is in progress. In such a case, this method guarantees only that this won't create
/// an unmanaged buffer overflow condition.
/// </summary>
public static SafeHandle ToLpstrArray(this OidCollection?oids, out int numOids)
{
if (oids == null || oids.Count == 0)
{
numOids = 0;
return(SafeLocalAllocHandle.InvalidHandle);
}
// Copy the oid strings to a local array to prevent a security race condition where
// the OidCollection or individual oids can be modified by another thread and
// potentially cause a buffer overflow
var oidStrings = new string[oids.Count];
for (int i = 0; i < oidStrings.Length; i++)
{
oidStrings[i] = oids[i].Value !;
}
unsafe
{
int allocationSize = checked (oidStrings.Length * sizeof(void *));
foreach (string oidString in oidStrings)
{
checked
{
allocationSize += oidString.Length + 1; // Encoding.ASCII doesn't have a fallback, so it's fine to use String.Length
}
}
SafeLocalAllocHandle safeLocalAllocHandle = SafeLocalAllocHandle.Create(allocationSize);
byte **pOidPointers = (byte **)(safeLocalAllocHandle.DangerousGetHandle());
byte * pOidContents = (byte *)(pOidPointers + oidStrings.Length);
for (int i = 0; i < oidStrings.Length; i++)
{
string oidString = oidStrings[i];
pOidPointers[i] = pOidContents;
int bytesWritten = Encoding.ASCII.GetBytes(oidString, new Span <byte>(pOidContents, oidString.Length));
Debug.Assert(bytesWritten == oidString.Length);
pOidContents[oidString.Length] = 0;
pOidContents += oidString.Length + 1;
}
numOids = oidStrings.Length;
return(safeLocalAllocHandle);
}
}
// Any exceptions that escape synchronously will be caught by the caller and wrapped in a PingException.
// We do not need to or want to capture such exceptions into the returned task.
private Task <PingReply> DoSendPingCore(IPAddress address, byte[] buffer, int timeout, PingOptions?options, bool isAsync)
{
TaskCompletionSource <PingReply>?tcs = null;
if (isAsync)
{
_taskCompletionSource = tcs = new TaskCompletionSource <PingReply>();
}
_ipv6 = (address.AddressFamily == AddressFamily.InterNetworkV6);
_sendSize = buffer.Length;
// Cache correct handle.
InitialiseIcmpHandle();
if (_replyBuffer == null)
{
_replyBuffer = SafeLocalAllocHandle.LocalAlloc(MaxUdpPacket);
}
int error;
try
{
if (isAsync)
{
RegisterWaitHandle();
}
SetUnmanagedStructures(buffer);
error = SendEcho(address, buffer, timeout, options, isAsync);
}
catch
{
Cleanup(isAsync);
throw;
}
if (error == 0)
{
error = Marshal.GetLastWin32Error();
// Only skip Async IO Pending error value.
if (!isAsync || error != Interop.IpHlpApi.ERROR_IO_PENDING)
{
Cleanup(isAsync);
IPStatus status = GetStatusFromCode(error);
return(Task.FromResult(new PingReply(address, default, status, default, Array.Empty <byte>())));
private PingReply CreatePingReply()
{
SafeLocalAllocHandle buffer = _replyBuffer;
// Marshals and constructs new reply.
if (_ipv6)
{
Interop.IpHlpApi.Icmp6EchoReply icmp6Reply = Marshal.PtrToStructure <Interop.IpHlpApi.Icmp6EchoReply>(buffer.DangerousGetHandle());
return(CreatePingReplyFromIcmp6EchoReply(icmp6Reply, buffer.DangerousGetHandle(), _sendSize));
}
Interop.IpHlpApi.IcmpEchoReply icmpReply = Marshal.PtrToStructure <Interop.IpHlpApi.IcmpEchoReply>(buffer.DangerousGetHandle());
return(CreatePingReplyFromIcmpEchoReply(icmpReply));
}
// Private callback invoked when icmpsendecho APIs succeed.
private static void PingCallback(object state, bool signaled)
{
Ping ping = (Ping)state;
PingCompletedEventArgs eventArgs = null;
AsyncOperation asyncOp = null;
SendOrPostCallback onPingCompletedDelegate = null;
try
{
lock (ping._lockObject)
{
asyncOp = ping._asyncOp;
onPingCompletedDelegate = ping._onPingCompletedDelegate;
// Parse reply buffer.
SafeLocalAllocHandle buffer = ping._replyBuffer;
// Marshals and constructs new reply.
PingReply reply;
if (ping._ipv6)
{
Interop.IpHlpApi.Icmp6EchoReply icmp6Reply = Marshal.PtrToStructure <Interop.IpHlpApi.Icmp6EchoReply>(buffer.DangerousGetHandle());
reply = CreatePingReplyFromIcmp6EchoReply(icmp6Reply, buffer.DangerousGetHandle(), ping._sendSize);
}
else
{
Interop.IpHlpApi.IcmpEchoReply icmpReply = Marshal.PtrToStructure <Interop.IpHlpApi.IcmpEchoReply>(buffer.DangerousGetHandle());
reply = CreatePingReplyFromIcmpEchoReply(icmpReply);
}
eventArgs = new PingCompletedEventArgs(reply, null, false, asyncOp.UserSuppliedState);
}
}
catch (Exception e)
{
// In case of failure, create a failed event arg.
PingException pe = new PingException(SR.net_ping, e);
eventArgs = new PingCompletedEventArgs(null, pe, false, asyncOp.UserSuppliedState);
}
finally
{
ping.FreeUnmanagedStructures();
ping.UnregisterWaitHandle();
ping.Finish();
}
asyncOp.PostOperationCompleted(onPingCompletedDelegate, eventArgs);
}
internal KeyTransRecipientInfo(SafeLocalAllocHandle pRecipientInfo, CAPI.CERT_INFO certInfo, uint index)
: base(RecipientInfoType.KeyTransport, RecipientSubType.Pkcs7KeyTransport, pRecipientInfo, (object)certInfo, index)
{
int version = 2;
byte* numPtr = (byte*)(void*)certInfo.SerialNumber.pbData;
for (int index1 = 0; (long)index1 < (long)certInfo.SerialNumber.cbData; ++index1)
{
if ((int)*numPtr++ != 0)
{
version = 0;
break;
}
}
this.Reset(version);
}
internal SignerInfo(SignedCms signedCms, SignerInfo parentSignerInfo, byte[] encodedSignerInfo)
{
uint cbDecodedValue = 0U;
SafeLocalAllocHandle decodedValue = SafeLocalAllocHandle.InvalidHandle;
fixed (byte* numPtr = &encodedSignerInfo[0])
{
if (!CAPI.DecodeObject(new IntPtr(500L), new IntPtr((void*)numPtr), (uint)encodedSignerInfo.Length, out decodedValue, out cbDecodedValue))
throw new CryptographicException(Marshal.GetLastWin32Error());
}
this.m_signedCms = signedCms;
this.m_parentSignerInfo = parentSignerInfo;
this.m_encodedSignerInfo = (byte[])encodedSignerInfo.Clone();
this.m_pbCmsgSignerInfo = decodedValue;
this.m_cmsgSignerInfo = (CAPI.CMSG_SIGNER_INFO)Marshal.PtrToStructure(decodedValue.DangerousGetHandle(), typeof(CAPI.CMSG_SIGNER_INFO));
}
internal AlgorithmIdentifier(CAPI.CERT_PUBLIC_KEY_INFO keyInfo)
{
SafeLocalAllocHandle pKeyInfo = CAPI.LocalAlloc(CAPI.LPTR, new IntPtr(Marshal.SizeOf(typeof(CAPI.CERT_PUBLIC_KEY_INFO))));
Marshal.StructureToPtr(keyInfo, pKeyInfo.DangerousGetHandle(), false);
int keyLength = (int)CAPI.CAPISafe.CertGetPublicKeyLength(CAPI.X509_ASN_ENCODING | CAPI.PKCS_7_ASN_ENCODING, pKeyInfo.DangerousGetHandle());
byte[] parameters = new byte[keyInfo.Algorithm.Parameters.cbData];
if (parameters.Length > 0)
{
Marshal.Copy(keyInfo.Algorithm.Parameters.pbData, parameters, 0, parameters.Length);
}
Marshal.DestroyStructure(pKeyInfo.DangerousGetHandle(), typeof(CAPI.CERT_PUBLIC_KEY_INFO));
pKeyInfo.Dispose();
Reset(Oid.FromOidValue(keyInfo.Algorithm.pszObjId, OidGroup.PublicKeyAlgorithm), keyLength, parameters);
}
internal unsafe KeyTransRecipientInfo(SafeLocalAllocHandle pRecipientInfo, CAPI.CERT_INFO certInfo, uint index) : base(RecipientInfoType.KeyTransport, RecipientSubType.Pkcs7KeyTransport, pRecipientInfo, certInfo, index)
{
// If serial number is 0, then it is the special SKI encoding.
int version = 2;
byte *pb = (byte *)certInfo.SerialNumber.pbData;
for (int i = 0; i < certInfo.SerialNumber.cbData; i++)
{
if (*pb++ != (byte)0)
{
version = 0;
break;
}
}
Reset(version);
}
private static byte[] Encode(DateTime signingTime)
{
long ft = signingTime.ToFileTimeUtc();
SafeLocalAllocHandle pbSigningTime = CAPI.LocalAlloc(CAPI.LPTR, new IntPtr(Marshal.SizeOf(typeof(Int64))));
Marshal.WriteInt64(pbSigningTime.DangerousGetHandle(), ft);
byte[] encodedSigningTime = new byte[0];
if (!CAPI.EncodeObject(CAPI.szOID_RSA_signingTime, pbSigningTime.DangerousGetHandle(), out encodedSigningTime))
{
throw new CryptographicException(Marshal.GetLastWin32Error());
}
pbSigningTime.Dispose();
return(encodedSigningTime);
}
private static SafeLocalAllocHandle GetTokenInformation(SafeAccessTokenHandle tokenHandle, TokenInformationClass tokenInformationClass)
{
SafeLocalAllocHandle safeLocalAllocHandle = SafeLocalAllocHandle.InvalidHandle;
uint dwLength = (uint)sizeof(uint);
bool result = Interop.Advapi32.GetTokenInformation(tokenHandle,
(uint)tokenInformationClass,
safeLocalAllocHandle,
0,
out dwLength);
int dwErrorCode = Marshal.GetLastWin32Error();
switch (dwErrorCode)
{
case Interop.Errors.ERROR_BAD_LENGTH:
// special case for TokenSessionId. Falling through
case Interop.Errors.ERROR_INSUFFICIENT_BUFFER:
// ptrLength is an [In] param to LocalAlloc
UIntPtr ptrLength = new UIntPtr(dwLength);
safeLocalAllocHandle.Dispose();
safeLocalAllocHandle = Interop.Kernel32.LocalAlloc(0, ptrLength);
if (safeLocalAllocHandle == null || safeLocalAllocHandle.IsInvalid)
{
throw new OutOfMemoryException();
}
safeLocalAllocHandle.Initialize(dwLength);
result = Interop.Advapi32.GetTokenInformation(tokenHandle,
(uint)tokenInformationClass,
safeLocalAllocHandle,
dwLength,
out dwLength);
if (!result)
{
throw new SecurityException(new Win32Exception().Message);
}
break;
case Interop.Errors.ERROR_INVALID_HANDLE:
throw new ArgumentException(SR.Argument_InvalidImpersonationToken);
default:
throw new SecurityException(new Win32Exception(dwErrorCode).Message);
}
return(safeLocalAllocHandle);
}
internal RecipientInfo(RecipientInfoType recipientInfoType, RecipientSubType recipientSubType, SafeLocalAllocHandle pCmsgRecipientInfo, Object cmsgRecipientInfo, uint index)
{
if (recipientInfoType < RecipientInfoType.Unknown || recipientInfoType > RecipientInfoType.KeyAgreement)
{
recipientInfoType = RecipientInfoType.Unknown;
}
if (recipientSubType < RecipientSubType.Unknown || recipientSubType > RecipientSubType.PublicKeyAgreement)
{
recipientSubType = RecipientSubType.Unknown;
}
m_recipentInfoType = recipientInfoType;
m_recipientSubType = recipientSubType;
m_pCmsgRecipientInfo = pCmsgRecipientInfo;
m_cmsgRecipientInfo = cmsgRecipientInfo;
m_index = index;
}
internal unsafe SignerInfoCollection(SignedCms signedCms)
{
uint dwSigners = 0;
uint cbCount = (uint)Marshal.SizeOf(typeof(uint));
SafeCryptMsgHandle safeCryptMsgHandle = signedCms.GetCryptMsgHandle();
if (!CAPI.CAPISafe.CryptMsgGetParam(safeCryptMsgHandle,
CAPI.CMSG_SIGNER_COUNT_PARAM,
0,
new IntPtr(&dwSigners),
new IntPtr(&cbCount)))
{
throw new CryptographicException(Marshal.GetLastWin32Error());
}
SignerInfo[] signerInfos = new SignerInfo[dwSigners];
for (int index = 0; index < dwSigners; index++)
{
uint cbCmsgSignerInfo = 0;
if (!CAPI.CAPISafe.CryptMsgGetParam(safeCryptMsgHandle,
CAPI.CMSG_SIGNER_INFO_PARAM,
(uint)index,
IntPtr.Zero,
new IntPtr(&cbCmsgSignerInfo)))
{
throw new CryptographicException(Marshal.GetLastWin32Error());
}
SafeLocalAllocHandle pbCmsgSignerInfo = CAPI.LocalAlloc(CAPI.LMEM_FIXED, new IntPtr(cbCmsgSignerInfo));
if (!CAPI.CAPISafe.CryptMsgGetParam(safeCryptMsgHandle,
CAPI.CMSG_SIGNER_INFO_PARAM,
(uint)index,
pbCmsgSignerInfo,
new IntPtr(&cbCmsgSignerInfo)))
{
throw new CryptographicException(Marshal.GetLastWin32Error());
}
signerInfos[index] = new SignerInfo(signedCms, pbCmsgSignerInfo);
}
m_signerInfos = signerInfos;
}
// Cancels pending async requests, closes the handles.
private void InternalDispose()
{
_disposeRequested = true;
if (Interlocked.CompareExchange(ref _status, Disposed, Free) != Free)
{
// Already disposed, or Finish will call Dispose again once Free.
return;
}
if (_handlePingV4 != null)
{
_handlePingV4.Dispose();
_handlePingV4 = null;
}
if (_handlePingV6 != null)
{
_handlePingV6.Dispose();
_handlePingV6 = null;
}
UnregisterWaitHandle();
if (pingEvent != null)
{
pingEvent.Dispose();
pingEvent = null;
}
if (_replyBuffer != null)
{
_replyBuffer.Dispose();
_replyBuffer = null;
}
if (_asyncFinished != null)
{
_asyncFinished.Dispose();
_asyncFinished = null;
}
}
/// <summary>Dispose of the instance.</summary>
public void Dispose()
{
if (_mediaDetector != null)
{
// Free the frame buffer
_frameBuffer.Dispose();
_frameBuffer = null;
// Free the media type
if (_mediaType.cbFormat != 0)
{
Marshal.FreeCoTaskMem(new IntPtr(_mediaType.cbFormat));
}
_mediaType = new _AMMediaType();
// Release the media detector
Marshal.ReleaseComObject(_mediaDetector);
_mediaDetector = null;
}
}
private void Decode()
{
uint cbDecoded = 0;
SafeLocalAllocHandle pbDecoded = null;
if (!CAPI.DecodeObject(new IntPtr(CAPI.PKCS_UTC_TIME),
RawData,
out pbDecoded,
out cbDecoded))
{
throw new CryptographicException(Marshal.GetLastWin32Error());
}
long signingTime = Marshal.ReadInt64(pbDecoded.DangerousGetHandle());
pbDecoded.Dispose();
m_signingTime = DateTime.FromFileTimeUtc(signingTime);
m_decoded = true;
}
internal static NetworkInterface[] GetNetworkInterfaces()
{
AddressFamily family = AddressFamily.Unspecified;
uint outBufLen = 0;
Interop.FIXED_INFO fixedInfo = HostInformationPal.GetFixedInfo();
List <SystemNetworkInterface> networkInterfaceList = new List <SystemNetworkInterface>();
Interop.GetAdaptersAddressesFlags adaptersAddressesFlags =
Interop.GetAdaptersAddressesFlags.IncludeWins | Interop.GetAdaptersAddressesFlags.IncludeGateways |
Interop.GetAdaptersAddressesFlags.IncludeAllInterfaces;
uint adaptersAddresses = Interop.GetAdaptersAddresses(family, (uint)adaptersAddressesFlags, IntPtr.Zero, SafeLocalAllocHandle.Zero, ref outBufLen);
while ((int)adaptersAddresses == 111)
{
SafeLocalAllocHandle adapterAddresses;
using (adapterAddresses = SafeLocalAllocHandle.LocalAlloc((int)outBufLen))
{
adaptersAddresses = Interop.GetAdaptersAddresses(family, (uint)adaptersAddressesFlags, IntPtr.Zero, adapterAddresses, ref outBufLen);
Interop.IpAdapterAddresses structure;
if ((int)adaptersAddresses == 0)
{
for (IntPtr ptr = adapterAddresses.DangerousGetHandle(); ptr != IntPtr.Zero; ptr = structure.next)
{
structure = Marshal.PtrToStructure <Interop.IpAdapterAddresses>(ptr);
var a = new SystemNetworkInterface(fixedInfo, structure);
networkInterfaceList.Add(a);
}
}
}
}
if ((int)adaptersAddresses == 232 || (int)adaptersAddresses == 87)
{
return((NetworkInterface[])Array.Empty <SystemNetworkInterface>());
}
if ((int)adaptersAddresses != 0)
{
throw new NetworkInformationException((int)adaptersAddresses);
}
return((NetworkInterface[])networkInterfaceList.ToArray());
}
/// <summary>Initialize the VideoFrameReader.</summary>
/// <param name="path">The path to the video to load.</param>
public VideoFrameReader(string path)
{
if (path == null)
{
throw new ArgumentNullException(path);
}
// Load the video, determine the size of a frame in the video,
// determine the length of the video, and calculate the number of frames in it.
_mediaDetector = LoadVideo(path, out _mediaType);
_frameSize = GetFrameSize(_mediaType);
_streamLength = _mediaDetector.StreamLength;
_numberOfFrames = (int)(_streamLength * _mediaDetector.FrameRate);
// Create an unmanaged buffer to use in the frame extraction process.
// We need a buffer large enough to store three bytes per pixel (RGB)
// plus the size of a BITMAPINFOHEADER structure.
_headerSize = Marshal.SizeOf(typeof(BITMAPINFOHEADER));
_bufferSize = (_frameSize.Width * _frameSize.Height * 3) + _headerSize;
_frameBuffer = SafeLocalAllocHandle.LocalAlloc(_bufferSize);
}
internal static SafeLocalAllocHandle DecodeExtension(CERT_EXTENSION extension)
{
SafeLocalAllocHandle decodedExtension = null;
int decodedSize = 0;
bool decoded = UnsafeNativeMethods.CryptDecodeObjectEx(CertificateEncodingType.Pkcs7AsnEncoding | CertificateEncodingType.X509AsnEncoding,
extension.pszObjId,
extension.Value.pbData,
extension.Value.cbData,
DecodeObjectFlags.AllocateMemory | DecodeObjectFlags.NoCopy | DecodeObjectFlags.ShareOidStrings,
IntPtr.Zero,
out decodedExtension,
ref decodedSize);
if (!decoded)
{
Marshal.ThrowExceptionForHR(Marshal.GetHRForLastWin32Error());
}
return(decodedExtension);
}
public static IList <X509AlternateName> GetAlternateNames(this X509Certificate certificate,
Oid2 alternateNameExtensionOid)
{
if (alternateNameExtensionOid == null)
{
throw new ArgumentNullException("alternateNameExtensionOid");
}
List <X509AlternateName> alternateNames = new List <X509AlternateName>();
using (SafeCertContextHandle certContext = certificate.GetCertificateContext())
{
// Make sure we have the extension requested
if (X509Native.HasExtension(certContext, alternateNameExtensionOid.Value))
{
// If so, get it from the certificate, and decode it into a buffer
X509Native.CERT_EXTENSION alternateNameExtension =
X509Native.FindExtension(certContext, alternateNameExtensionOid.Value);
using (SafeLocalAllocHandle decodedBuffer = X509Native.DecodeExtension(alternateNameExtension))
{
// This buffer contains CERT_ALT_NAME_INFO which points us at the alternate names we
// were looking for
X509Native.CERT_ALT_NAME_INFO altNameInfo = decodedBuffer.Read <X509Native.CERT_ALT_NAME_INFO>(0);
for (int i = 0; i < altNameInfo.cAltEntry; ++i)
{
unsafe
{
X509Native.CERT_ALT_NAME_ENTRY *pAltNameEntry = (X509Native.CERT_ALT_NAME_ENTRY *)altNameInfo.rgAltEntry;
alternateNames.Add(X509AlternateName.FromAltNameEntry(pAltNameEntry[i]));
}
}
}
}
}
return(alternateNames);
}
internal static unsafe bool DecodeObject(IntPtr pszStructType, byte[] pbEncoded, out SafeLocalAllocHandle decodedValue, out uint cbDecodedValue)
{
decodedValue = SafeLocalAllocHandle.InvalidHandle;
cbDecodedValue = 0U;
uint num = 0U;
SafeLocalAllocHandle invalidHandle = SafeLocalAllocHandle.InvalidHandle;
if (!CAPI.CAPISafe.CryptDecodeObject(65537U, pszStructType, pbEncoded, (uint)pbEncoded.Length, 0U, invalidHandle, new IntPtr((void*)&num)))
return false;
SafeLocalAllocHandle pvStructInfo = CAPI.LocalAlloc(0U, new IntPtr((long)num));
if (!CAPI.CAPISafe.CryptDecodeObject(65537U, pszStructType, pbEncoded, (uint)pbEncoded.Length, 0U, pvStructInfo, new IntPtr((void*)&num)))
return false;
decodedValue = pvStructInfo;
cbDecodedValue = num;
return true;
}
bool DecodeObject(IntPtr pszStructType,
byte[] pbEncoded,
out SafeLocalAllocHandle decodedValue,
out uint cbDecodedValue) {
// Initialize out parameters
decodedValue = SafeLocalAllocHandle.InvalidHandle;
cbDecodedValue = 0;
// Decode
uint cbDecoded = 0;
SafeLocalAllocHandle pbDecoded = SafeLocalAllocHandle.InvalidHandle;
if (!CAPIMethods.CryptDecodeObject(X509_ASN_ENCODING | PKCS_7_ASN_ENCODING,
pszStructType,
pbEncoded,
(uint) pbEncoded.Length,
0,
pbDecoded,
new IntPtr(&cbDecoded)))
return false;
pbDecoded = CAPI.LocalAlloc(CAPI.LMEM_FIXED, new IntPtr(cbDecoded));
if (!CAPIMethods.CryptDecodeObject(X509_ASN_ENCODING | PKCS_7_ASN_ENCODING,
pszStructType,
pbEncoded,
(uint) pbEncoded.Length,
0,
pbDecoded,
new IntPtr(&cbDecoded)))
return false;
// Return decoded values
decodedValue = pbDecoded;
cbDecodedValue = cbDecoded;
return true;
}
bool DecodeObject(IntPtr pszStructType,
IntPtr pbEncoded,
uint cbEncoded,
out SafeLocalAllocHandle decodedValue,
out uint cbDecodedValue) {
// Initialize out parameters
decodedValue = SafeLocalAllocHandle.InvalidHandle;
cbDecodedValue = 0;
// Decode
uint cbDecoded = 0;
SafeLocalAllocHandle ptr = SafeLocalAllocHandle.InvalidHandle;
bool result = CAPIMethods.CryptDecodeObject(X509_ASN_ENCODING | PKCS_7_ASN_ENCODING,
pszStructType,
pbEncoded,
cbEncoded,
0,
ptr,
new IntPtr(&cbDecoded));
if (result == false)
return false;
ptr = CAPI.LocalAlloc(CAPI.LMEM_FIXED, new IntPtr(cbDecoded));
result = CAPIMethods.CryptDecodeObject(X509_ASN_ENCODING | PKCS_7_ASN_ENCODING,
pszStructType,
pbEncoded,
cbEncoded,
0,
ptr,
new IntPtr(&cbDecoded));
if (result == false)
return false;
// Return decoded values
decodedValue = ptr;
cbDecodedValue = cbDecoded;
return true;
}
internal KeyTransRecipientInfo(SafeLocalAllocHandle pRecipientInfo, CAPI.CMSG_KEY_TRANS_RECIPIENT_INFO keyTrans, uint index)
: base(RecipientInfoType.KeyTransport, RecipientSubType.CmsKeyTransport, pRecipientInfo, (object)keyTrans, index)
{
this.Reset((int)keyTrans.dwVersion);
}
internal KeyAgreeRecipientInfo(SafeLocalAllocHandle pRecipientInfo, CAPI.CMSG_KEY_AGREE_PUBLIC_KEY_RECIPIENT_INFO publicKeyRecipient, uint index, uint subIndex)
: base(RecipientInfoType.KeyAgreement, RecipientSubType.PublicKeyAgreement, pRecipientInfo, (object)publicKeyRecipient, index)
{
CAPI.CMSG_RECIPIENT_ENCRYPTED_KEY_INFO encryptedKeyInfo = (CAPI.CMSG_RECIPIENT_ENCRYPTED_KEY_INFO)Marshal.PtrToStructure(Marshal.ReadIntPtr(new IntPtr((long)publicKeyRecipient.rgpRecipientEncryptedKeys + (long)subIndex * (long)Marshal.SizeOf(typeof(IntPtr)))), typeof(CAPI.CMSG_RECIPIENT_ENCRYPTED_KEY_INFO));
this.Reset(2U, publicKeyRecipient.dwVersion, encryptedKeyInfo, subIndex);
}
public static SafeLocalAllocHandle Alloc(int cb)
{
SafeLocalAllocHandle handle = new SafeLocalAllocHandle();
handle.AllocCore(cb);
return handle;
}
internal UNICODE_INTPTR_STRING(int stringBytes, SafeLocalAllocHandle buffer)
{
Length = (ushort)stringBytes;
MaxLength = (ushort)buffer.ByteLength;
Buffer = buffer.DangerousGetHandle();
}
