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/*
* Copyright (c) 2015 Isode Limited.
* All rights reserved.
* See the COPYING file for more information.
*/
#pragma once
#include <string>
#define SECURITY_WIN32
#include <Windows.h>
#include <Sspi.h>
#include <Swiften/Base/API.h>
#include <Swiften/Base/boost_bsignals.h>
#include <Swiften/Base/SafeByteArray.h>
namespace Swift {
/**
* Retrieves the names & Windows server domain of the user associated
* with the calling thread.
*
* @param userName Will return the user name in the form "DOMAIN\user"
* @param clientName Will return the client name in the form "user"
* @param serverName Will return the server name in the form "DOMAIN"
*
* @return NULL for success, otherwise the error code returned by
* Windows.
*/
SWIFTEN_API boost::shared_ptr<boost::system::error_code> getUserNameEx(std::string& userName, std::string& clientName, std::string& serverName);
/**
* Retrieves the handle to preexisting client credentials for the
* Kerberos security package that were established through a system
* logon.
* freeCredentialsHandle() should be called if this function is
* successful and when credentials are no longer needed.
*
* @param credentialsHandle Pointer to the returned credentials handle.
*
* @return NULL for success, otherwise the error code returned by
* Windows.
*/
SWIFTEN_API boost::shared_ptr<boost::system::error_code> acquireCredentialsHandle(PCredHandle credentialsHandle);
/**
* Releases the credentials handle obtained by the
* acquireCredentialsHandle() function.
* freeCredentialsHandle() should be called when credentials are no
* longer needed.
*
* @param credentialsHandle Pointer to the credentials handle.
*
* @return NULL for success, otherwise the error code returned by
* Windows.
*/
SWIFTEN_API boost::shared_ptr<boost::system::error_code> freeCredentialsHandle(PCredHandle credentialsHandle);
/**
* Builds the security context between the client and remote peer.
* Kerberos security package that were established through a system
* logon.
*
* @param inputToken NULL or empty on the first call, otherwise the
* token returned by the server.
* @param servicePrincipalNameString Service principal name of the
* server.
* @param credentialsHandle Pointer to the credentials handle acquired
* before.
* @param haveContextHandle False on the first call to this function,
* true otherwise.
* @param contextHandle Pointer to the context handle returned on the
* first call and passed on subsequent calls.
* @param contextRequested Context related requests by the caller. See
* the Windows API InitializeSecurityContext for allowed values.
* @param contextSupported Pointer to context related attributes
* returned when context is completely established (when
* haveCompleteContext contains true). See the Windows API
* InitializeSecurityContext for allowed values.
* @param haveCompleteContext Pointer to boolean - this will only be
* true on return when the context is completely established and
* there is no need to call this function again.
* @param outputToken Returned security token to be sent to the server,
* may be empty.
*
* @return NULL for success, otherwise the error code returned by
* Windows.
*/
SWIFTEN_API boost::shared_ptr<boost::system::error_code> initializeSecurityContext(const boost::optional<ByteArray>& inputToken, const std::string& servicePrincipalNameString, const PCredHandle credentialsHandle, bool haveContextHandle, PCtxtHandle contextHandle, ULONG contextRequested, ULONG* contextSupported, bool* haveCompleteContext, SafeByteArray& outputToken);
/**
* Releases the context handle obtained by the
* initializeSecurityContext() function.
* deleteSecurityContext() should be called when the context is no
* longer needed.
*
* @param contextHandle Pointer to the context handle.
*
* @return NULL for success, otherwise the error code returned by
* Windows.
*/
SWIFTEN_API boost::shared_ptr<boost::system::error_code> deleteSecurityContext(PCtxtHandle contextHandle);
/**
* Completes an authentication token for a partial security context.
*
* @param contextHandle Pointer to the context handle.
* @param token authentication token.
*
* @return NULL for success, otherwise the error code returned by
* Windows.
*/
SWIFTEN_API boost::shared_ptr<boost::system::error_code> completeAuthToken(const PCtxtHandle contextHandle, PSecBufferDesc token);
/**
* Frees a memory buffer allocated by the security package.
*
* @param contextBuffer Pointer to buffer to be freed.
*
* @return NULL for success, otherwise the error code returned by
* Windows.
*/
SWIFTEN_API boost::shared_ptr<boost::system::error_code> freeContextBuffer(PVOID contextBuffer);
/**
* Decrypt message (assumes that sequence numbers are not maintained).
*
* @param contextHandle Pointer to the context handle.
* @param message Message to decrypt.
* @param decrypted Returned decrypted message.
*
* @return NULL for success, otherwise the error code returned by
* Windows.
*/
SWIFTEN_API boost::shared_ptr<boost::system::error_code> decryptMessage(const PCtxtHandle contextHandle, const ByteArray& message, SafeByteArray& decrypted);
/**
* Produces a header or trailer for the message but does not encrypt it
* (also assumes that sequence numbers are not maintained).
*
* @param contextHandle Pointer to the context handle.
* @param sizes SecPkgContext_Sizes obtained for the context.
* @param message Input message.
* @param output Returned output message.
*
* @return NULL for success, otherwise the error code returned by
* Windows.
*/
SWIFTEN_API boost::shared_ptr<boost::system::error_code> encryptMessage(const PCtxtHandle contextHandle, const SecPkgContext_Sizes& sizes, const SafeByteArray& message, SafeByteArray& output);
/**
* Queries the security package for attributes of the security context.
*
* @param contextHandle Pointer to the context handle.
* @param attribute Attribute to query. See the Windows API
* QueryContextAttributes for allowed values.
* @param buffer Pointer to a structure that receives the output.
* The type of structure depends on the queried attribute and
* memory for it must be allocated by caller. If the SSP allocates
* any memory required to hold some members, that memory should be
* freed using the function freeContextBuffer(). See the Windows
* API QueryContextAttributes for details.
*
* @return NULL for success, otherwise the error code returned by
* Windows.
*/
SWIFTEN_API boost::shared_ptr<boost::system::error_code> queryContextAttributes(const PCtxtHandle contextHandle, ULONG attribute, PVOID buffer);
}
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Swift