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vlmcsd/msrpc-client.c

192 lines
4.1 KiB
C

#ifndef CONFIG
#define CONFIG "config.h"
#endif // CONFIG
#include CONFIG
#ifdef USE_MSRPC
#if !defined(_WIN32) && !defined(__CYGWIN__)
#error MSRPC is only available with native Windows or Cygwin
#endif
#include "msrpc-client.h"
#include <stdio.h>
#include "output.h"
#include "helpers.h"
#if __amd64 || defined(_M_AMD64) // 64-bit
#ifndef _M_AMD64
#define _M_AMD64
#endif // _M_AMD64
#include "KMSServer_c_x64_mingw_gcc.c"
#else // 32-bit
#include "KMSServer_c_mingw_gcc.c"
#endif // 32-bit
static RPC_CSTR stringBinding;
jmp_buf jmp;
RPC_STATUS PreviousRpcCallFailed = RPC_S_OK;
/*
* Creates an RPC string binding that is used to connect to the server.
* Input is host:port, e.g. "[::1]:1688" or "127.0.0.1:1688"
* Output is for example "ncacn_ip_tcp:127.0.0.1[endpoint=1688]"
*/
#if !__amd64
#pragma GCC optimize("O0") ////TODO: Find out why gcc needs -O0 for RPC handling
#endif
static RPC_STATUS createStringBinding(char *const addr, RPC_CSTR* stringBinding)
{
char *szHost, *szPort;
parseAddress(addr, &szHost, &szPort);
return RpcStringBindingComposeA
(
NULL, /* UUID */
(RPC_CSTR)"ncacn_ip_tcp", /* use TCP */
(RPC_CSTR)szHost, /* host name or IP address */
(RPC_CSTR)szPort, /* endpoint (TCP port here) */
NULL, /* options */
stringBinding /* resulting string binding */
);
}
/*
* This does not actually connect to a TCP port because MS RPC doesn't connect
* before the actual RPC call is made. So this a stub
*/
RpcCtx connectToAddress(char *const addr, const int AddressFamily_unused, int_fast8_t showHostName_unused)
{
RPC_STATUS status;
printf("Connecting to %s ... ", addr);
if ((status = createStringBinding(addr, &stringBinding)) != RPC_S_OK)
{
errorout("%s\n", win_strerror(status));
return !0;
}
if (PreviousRpcCallFailed)
{
errorout("%s\n", win_strerror(PreviousRpcCallFailed));
return !0;
}
printf("successful\n");
return 0;
}
/*
* Does not do RPC binding on the wire. Just initializes the interface
*/
RpcStatus rpcBindClient(const RpcCtx handle, const int_fast8_t verbose)
{
RPC_STATUS status;
if ((status = RpcBindingFromStringBindingA(stringBinding, &KMSServer_v1_0_c_ifspec)) != RPC_S_OK)
{
errorout("\n%s\n", win_strerror(status));
}
return status;
}
/*
* You never know if you have a TCP connection or not
* This returns true if the previous RPC call failed
*/
int_fast8_t isDisconnected(const RpcCtx handle)
{
return PreviousRpcCallFailed;
}
/*
* This is the exception handler because the RPC call may
* throw an SEH exception and gcc does not support
* __try / __except as MSVC does.
*/
static LONG WINAPI rpcException (LPEXCEPTION_POINTERS exception_pointers)
{
DWORD exception = exception_pointers->ExceptionRecord->ExceptionCode;
if (!exception) exception = (DWORD)~0;
longjmp(jmp, exception_pointers->ExceptionRecord->ExceptionCode);
return EXCEPTION_EXECUTE_HANDLER;
}
/*
* This actually calls the RPC server
*/
#define try SetUnhandledExceptionFilter(rpcException); RPC_STATUS exception = setjmp(jmp); if (!exception)
#define catch else
RpcStatus rpcSendRequest(const RpcCtx handle, BYTE* KmsRequest, const size_t requestSize, BYTE **KmsResponse, size_t* responseSize)
{
*KmsResponse = NULL; // Let midl_user_allocate do the job
try
{
exception = RequestActivation(KMSServer_v1_0_c_ifspec, (int)requestSize, KmsRequest, (int*)responseSize, KmsResponse);
}
catch
{
errorout("\n%s", win_strerror(exception));
}
PreviousRpcCallFailed = exception;
SetUnhandledExceptionFilter(NULL);
return exception;
}
#undef catch
#undef try
/*
* Only frees local handles. Cannot close the TCP connection
*/
RpcStatus closeRpc(const RpcCtx handle)
{
RPC_STATUS status;
if ((status = RpcBindingFree(&KMSServer_v1_0_c_ifspec)) != RPC_S_OK) return status;
status = RpcStringFreeA(&stringBinding);
//Ctx = INVALID_RPCCTX;
return status;
}
#if !MULTI_CALL_BINARY
// Memory allocation function for RPC.
void *__RPC_USER midl_user_allocate(SIZE_T len)
{
return vlmcsd_malloc(len);
}
// Memory deallocation function for RPC.
void __RPC_USER midl_user_free(void __RPC_FAR *ptr)
{
if (ptr) free(ptr);
ptr = NULL;
}
#endif // !MULTI_CALL_BINARY
#endif // USE_MSRPC