public static MemoryRegion PackCredentials(CredPackFlags flags, string userName, string password)
{
MemoryAlloc data = new MemoryAlloc(0x100);
int size = data.Size;
if (string.IsNullOrEmpty(userName))
{
userName = string.Empty;
}
if (string.IsNullOrEmpty(password))
{
password = string.Empty;
}
if (!Win32.CredPackAuthenticationBuffer(flags, userName, password, data, ref size))
{
data.ResizeNew(size);
if (!Win32.CredPackAuthenticationBuffer(flags, userName, password, data, ref size))
{
Win32.Throw();
}
}
return(data);
}
public static extern bool CredUnPackAuthenticationBuffer(CredPackFlags dwFlags,
IntPtr pAuthBuffer,
uint cbAuthBuffer,
StringBuilder pszUserName,
ref int pcchMaxUserName,
StringBuilder pszDomainName,
ref int pcchMaxDomainame,
StringBuilder pszPassword,
ref int pcchMaxPassword);
public static void UnpackCredentials(
MemoryRegion buffer,
CredPackFlags flags,
out string domainName,
out string userName,
out string password
)
{
using (MemoryAlloc domainNameBuffer = new MemoryAlloc(0x100))
using (MemoryAlloc userNameBuffer = new MemoryAlloc(0x100))
using (MemoryAlloc passwordBuffer = new MemoryAlloc(0x100))
{
int domainNameSize = domainNameBuffer.Size / 2 - 1;
int userNameSize = userNameBuffer.Size / 2 - 1;
int passwordSize = passwordBuffer.Size / 2 - 1;
if (!Win32.CredUnPackAuthenticationBuffer(
flags,
buffer,
buffer.Size,
userNameBuffer,
ref userNameSize,
domainNameBuffer,
ref domainNameSize,
passwordBuffer,
ref passwordSize
))
{
domainNameBuffer.ResizeNew(domainNameSize * 2 + 2);
userNameBuffer.ResizeNew(userNameSize * 2 + 2);
passwordBuffer.ResizeNew(passwordSize * 2 + 2);
if (!Win32.CredUnPackAuthenticationBuffer(
flags,
buffer,
buffer.Size,
userNameBuffer,
ref userNameSize,
domainNameBuffer,
ref domainNameSize,
passwordBuffer,
ref passwordSize
))
{
Win32.Throw();
}
}
domainName = domainNameBuffer.ReadUnicodeString(0);
userName = userNameBuffer.ReadUnicodeString(0);
password = passwordBuffer.ReadUnicodeString(0);
}
}
public static void UnpackCredentials(
MemoryRegion buffer,
CredPackFlags flags,
out string domainName,
out string userName,
out string password
)
{
using (var domainNameBuffer = new MemoryAlloc(0x100))
using (var userNameBuffer = new MemoryAlloc(0x100))
using (var passwordBuffer = new MemoryAlloc(0x100))
{
int domainNameSize = domainNameBuffer.Size / 2 - 1;
int userNameSize = userNameBuffer.Size / 2 - 1;
int passwordSize = passwordBuffer.Size / 2 - 1;
if (!Win32.CredUnPackAuthenticationBuffer(
flags,
buffer,
buffer.Size,
userNameBuffer,
ref userNameSize,
domainNameBuffer,
ref domainNameSize,
passwordBuffer,
ref passwordSize
))
{
domainNameBuffer.ResizeNew(domainNameSize * 2 + 2);
userNameBuffer.ResizeNew(userNameSize * 2 + 2);
passwordBuffer.ResizeNew(passwordSize * 2 + 2);
if (!Win32.CredUnPackAuthenticationBuffer(
flags,
buffer,
buffer.Size,
userNameBuffer,
ref userNameSize,
domainNameBuffer,
ref domainNameSize,
passwordBuffer,
ref passwordSize
))
Win32.Throw();
}
domainName = domainNameBuffer.ReadUnicodeString(0);
userName = userNameBuffer.ReadUnicodeString(0);
password = passwordBuffer.ReadUnicodeString(0);
}
}
private void Init(CredPackFlags flags, string pUserName, string pPassword)
{
if (!CredPackAuthenticationBuffer(flags, pUserName, pPassword, IntPtr.Zero, ref bufferSize) && Marshal.GetLastWin32Error() == 122) /*ERROR_INSUFFICIENT_BUFFER*/
{
buffer = Marshal.AllocCoTaskMem(bufferSize);
if (!CredPackAuthenticationBuffer(flags, pUserName, pPassword, buffer, ref bufferSize))
{
throw new Win32Exception();
}
}
else
{
throw new Win32Exception();
}
}
private void Init(CredPackFlags flags, string pUserName, string pPassword)
{
var bufferSize = 0;
if (!CredPackAuthenticationBuffer(flags, pUserName, pPassword, IntPtr.Zero, ref bufferSize) && Win32Error.GetLastError() == Win32Error.ERROR_INSUFFICIENT_BUFFER)
{
buffer = new SafeCoTaskMemHandle(bufferSize);
if (!CredPackAuthenticationBuffer(flags, pUserName, pPassword, DangerousHandle, ref bufferSize))
{
throw new Win32Exception();
}
}
else
{
throw new Win32Exception();
}
}
public static MemoryRegion PackCredentials(CredPackFlags flags, string userName, string password)
{
MemoryAlloc data = new MemoryAlloc(0x100);
int size = data.Size;
if (userName == null)
userName = "";
if (password == null)
password = "";
if (!Win32.CredPackAuthenticationBuffer(flags, userName, password, data, ref size))
{
data.ResizeNew(size);
if (!Win32.CredPackAuthenticationBuffer(flags, userName, password, data, ref size))
Win32.Throw();
}
return data;
}
public static extern bool CredPackAuthenticationBuffer(CredPackFlags dwFlags, IntPtr pszUserName, IntPtr pszPassword, IntPtr pPackedCredentials, ref int pcbPackedCredentials);
