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wine/dlls/ole32/rpc.c
Alexandre Julliard 2a46702761 Authors: Mike Hearn <mh@codeweavers.com>, Robert Shearman <rob@codeweavers.com> 
- Rework RPC dispatch layer to be simpler and not get confused by
  server/client duality.
- Make threads shut down at the right time and not access freed memory
  after apartment destruction.
- Rename stub_dispatch_thread to client_dispatch_thread.
- Add some more tracing
- Check return value of WaitNamedPipe.
- Change named pipe timeouts to 0.5s, which should be enough for even the slowest machines.
2005-02-08 12:55:26 +00:00

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/*
* (Local) RPC Stuff
*
* Copyright 2002 Marcus Meissner
* Copyright 2005 Mike Hearn, Rob Shearman for CodeWeavers
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include <stdlib.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#define COBJMACROS
#define NONAMELESSUNION
#define NONAMELESSSTRUCT
#include "windef.h"
#include "winbase.h"
#include "winuser.h"
#include "winsvc.h"
#include "objbase.h"
#include "ole2.h"
#include "rpc.h"
#include "winerror.h"
#include "winreg.h"
#include "wtypes.h"
#include "wine/unicode.h"
#include "compobj_private.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(ole);
#define PIPEPREF "\\\\.\\pipe\\"
#define OLESTUBMGR PIPEPREF"WINE_OLE_StubMgr"
#define REQTYPE_REQUEST 0
#define REQTYPE_RESPONSE 1
struct request_header
{
DWORD reqid;
IPID ipid;
DWORD iMethod;
DWORD cbBuffer;
};
struct response_header
{
DWORD reqid;
DWORD cbBuffer;
DWORD retval;
};
#define REQSTATE_START 0
#define REQSTATE_REQ_QUEUED 1
#define REQSTATE_REQ_WAITING_FOR_REPLY 2
#define REQSTATE_REQ_GOT 3
#define REQSTATE_INVOKING 4
#define REQSTATE_RESP_QUEUED 5
#define REQSTATE_RESP_GOT 6
#define REQSTATE_DONE 6
struct rpc
{
int state;
HANDLE hPipe; /* temp copy of handle */
struct request_header reqh;
struct response_header resph;
LPBYTE Buffer;
};
/* fixme: this should have a lock */
static struct rpc **reqs = NULL;
static int nrofreqs = 0;
/* This pipe is _thread_ based, each thread which talks to a remote
* apartment (oxid) has its own pipe. The same structure is used both
* for outgoing and incoming RPCs.
*/
struct pipe
{
wine_marshal_id mid; /* target mid */
DWORD tid; /* thread which owns this pipe */
HANDLE hPipe;
int pending;
HANDLE hThread;
CRITICAL_SECTION crit;
APARTMENT *apt; /* apartment of the marshalling thread for the stub dispatch case */
};
typedef struct _PipeBuf {
IRpcChannelBufferVtbl *lpVtbl;
DWORD ref;
wine_marshal_id mid;
HANDLE pipe;
} PipeBuf;
/* some helper functions */
static HRESULT WINAPI read_pipe(HANDLE hf, LPVOID ptr, DWORD size)
{
DWORD res;
if (!ReadFile(hf,ptr,size,&res,NULL))
{
ERR("Failed to read from %p, le is %ld\n",hf,GetLastError());
return E_FAIL;
}
if (res != size)
{
if (!res)
{
WARN("%p disconnected\n", hf);
return RPC_E_DISCONNECTED;
}
ERR("Read only %ld of %ld bytes from %p.\n",res,size,hf);
return E_FAIL;
}
return S_OK;
}
static HRESULT WINAPI
write_pipe(HANDLE hf, LPVOID ptr, DWORD size) {
DWORD res;
if (!WriteFile(hf,ptr,size,&res,NULL)) {
FIXME("Failed to write to %p, le is %ld\n",hf,GetLastError());
return E_FAIL;
}
if (res!=size) {
FIXME("Wrote only %ld of %ld bytes to %p.\n",res,size,hf);
return E_FAIL;
}
return S_OK;
}
static HANDLE dupe_handle(HANDLE h)
{
HANDLE h2;
if (!DuplicateHandle(GetCurrentProcess(), h, GetCurrentProcess(),
&h2, 0, FALSE, DUPLICATE_SAME_ACCESS))
{
ERR("could not duplicate handle: %ld\n", GetLastError());
return INVALID_HANDLE_VALUE;
}
return h2;
}
static DWORD WINAPI client_dispatch_thread(LPVOID);
/* FIXME: this all needs to be made thread safe */
static HRESULT RPC_GetRequest(struct rpc **req)
{
static int reqid = 0;
int i;
/* try to reuse */
for (i = 0; i < nrofreqs; i++)
{
if (reqs[i]->state == REQSTATE_DONE)
{
TRACE("reusing reqs[%d]\n", i);
reqs[i]->reqh.reqid = reqid++;
reqs[i]->resph.reqid = reqs[i]->reqh.reqid;
reqs[i]->hPipe = INVALID_HANDLE_VALUE;
reqs[i]->state = REQSTATE_START;
*req = reqs[i];
return S_OK;
}
}
TRACE("creating new struct rpc (request)\n");
if (reqs)
reqs = (struct rpc**)HeapReAlloc(
GetProcessHeap(),
HEAP_ZERO_MEMORY,
reqs,
sizeof(struct rpc*)*(nrofreqs+1)
);
else
reqs = (struct rpc**)HeapAlloc(
GetProcessHeap(),
HEAP_ZERO_MEMORY,
sizeof(struct rpc*)
);
if (!reqs) return E_OUTOFMEMORY;
reqs[nrofreqs] = (struct rpc*)HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(struct rpc));
reqs[nrofreqs]->reqh.reqid = reqid++;
reqs[nrofreqs]->resph.reqid = reqs[nrofreqs]->reqh.reqid;
reqs[nrofreqs]->hPipe = INVALID_HANDLE_VALUE;
reqs[nrofreqs]->state = REQSTATE_START;
*req = reqs[nrofreqs];
nrofreqs++;
return S_OK;
}
static HRESULT WINAPI
PipeBuf_QueryInterface(
LPRPCCHANNELBUFFER iface,REFIID riid,LPVOID *ppv
) {
*ppv = NULL;
if (IsEqualIID(riid,&IID_IRpcChannelBuffer) || IsEqualIID(riid,&IID_IUnknown)) {
*ppv = (LPVOID)iface;
IUnknown_AddRef(iface);
return S_OK;
}
return E_NOINTERFACE;
}
static ULONG WINAPI
PipeBuf_AddRef(LPRPCCHANNELBUFFER iface) {
PipeBuf *This = (PipeBuf *)iface;
return InterlockedIncrement(&This->ref);
}
static ULONG WINAPI
PipeBuf_Release(LPRPCCHANNELBUFFER iface) {
PipeBuf *This = (PipeBuf *)iface;
ULONG ref;
ref = InterlockedDecrement(&This->ref);
if (ref)
return ref;
CloseHandle(This->pipe);
HeapFree(GetProcessHeap(),0,This);
return 0;
}
static HRESULT WINAPI
PipeBuf_GetBuffer(LPRPCCHANNELBUFFER iface,RPCOLEMESSAGE* msg,REFIID riid)
{
TRACE("(%p,%s)\n",msg,debugstr_guid(riid));
/* probably reuses IID in real. */
if (msg->cbBuffer && (msg->Buffer == NULL))
msg->Buffer = HeapAlloc(GetProcessHeap(),0,msg->cbBuffer);
return S_OK;
}
static HRESULT
COM_InvokeAndRpcSend(struct rpc *req) {
IRpcStubBuffer *stub;
RPCOLEMESSAGE msg;
HRESULT hres;
DWORD reqtype;
if (!(stub = ipid_to_stubbuffer(&(req->reqh.ipid))))
/* ipid_to_stubbuffer will already have logged the error */
return RPC_E_DISCONNECTED;
IUnknown_AddRef(stub);
msg.Buffer = req->Buffer;
msg.iMethod = req->reqh.iMethod;
msg.cbBuffer = req->reqh.cbBuffer;
msg.dataRepresentation = NDR_LOCAL_DATA_REPRESENTATION;
req->state = REQSTATE_INVOKING;
req->resph.retval = IRpcStubBuffer_Invoke(stub,&msg,NULL);
IUnknown_Release(stub);
req->Buffer = msg.Buffer;
req->resph.cbBuffer = msg.cbBuffer;
reqtype = REQTYPE_RESPONSE;
hres = write_pipe(req->hPipe,&reqtype,sizeof(reqtype));
if (hres) return hres;
hres = write_pipe(req->hPipe,&(req->resph),sizeof(req->resph));
if (hres) return hres;
hres = write_pipe(req->hPipe,req->Buffer,req->resph.cbBuffer);
if (hres) return hres;
req->state = REQSTATE_DONE;
return S_OK;
}
static HRESULT process_incoming_rpc(HANDLE pipe);
static HRESULT RPC_QueueRequestAndWait(struct rpc *req, HANDLE pipe)
{
int i;
struct rpc *xreq;
HRESULT hres;
DWORD reqtype;
req->hPipe = pipe;
req->state = REQSTATE_REQ_WAITING_FOR_REPLY;
reqtype = REQTYPE_REQUEST;
hres = write_pipe(req->hPipe,&reqtype,sizeof(reqtype));
if (hres) return hres;
hres = write_pipe(req->hPipe,&(req->reqh),sizeof(req->reqh));
if (hres) return hres;
hres = write_pipe(req->hPipe,req->Buffer,req->reqh.cbBuffer);
if (hres) return hres;
/* This loop is about allowing re-entrancy. While waiting for the
* response to one RPC we may receive a request starting another. */
while (!hres) {
hres = process_incoming_rpc(pipe);
if (hres) break;
for (i=0;i<nrofreqs;i++) {
xreq = reqs[i];
if ((xreq->state==REQSTATE_REQ_GOT) && (xreq->hPipe==req->hPipe)) {
hres = COM_InvokeAndRpcSend(xreq);
if (hres) break;
}
}
if (req->state == REQSTATE_RESP_GOT)
return S_OK;
}
if (FAILED(hres))
WARN("-- 0x%08lx\n", hres);
return hres;
}
static HRESULT WINAPI
PipeBuf_SendReceive(LPRPCCHANNELBUFFER iface, RPCOLEMESSAGE *msg, ULONG *status)
{
PipeBuf *This = (PipeBuf *)iface;
struct rpc *req;
HRESULT hres;
if (This->mid.oxid == COM_CurrentApt()->oxid) {
ERR("Need to call directly!\n");
return E_FAIL;
}
hres = RPC_GetRequest(&req);
if (hres) return hres;
req->reqh.iMethod = msg->iMethod;
req->reqh.cbBuffer = msg->cbBuffer;
req->reqh.ipid = This->mid.ipid;
req->Buffer = msg->Buffer;
TRACE(" -> rpc ->\n");
hres = RPC_QueueRequestAndWait(req, This->pipe);
TRACE(" <- response <-\n");
if (hres)
{
req->state = REQSTATE_DONE;
return hres;
}
msg->cbBuffer = req->resph.cbBuffer;
msg->Buffer = req->Buffer;
*status = req->resph.retval;
req->state = REQSTATE_DONE;
return S_OK;
}
static HRESULT WINAPI
PipeBuf_FreeBuffer(LPRPCCHANNELBUFFER iface,RPCOLEMESSAGE* msg)
{
TRACE("(%p)\n",msg);
HeapFree(GetProcessHeap(), 0, msg->Buffer);
return S_OK;
}
static HRESULT WINAPI
PipeBuf_GetDestCtx(LPRPCCHANNELBUFFER iface,DWORD* pdwDestContext,void** ppvDestContext)
{
FIXME("(%p,%p), stub!\n",pdwDestContext,ppvDestContext);
return E_FAIL;
}
static HRESULT WINAPI
PipeBuf_IsConnected(LPRPCCHANNELBUFFER iface)
{
FIXME("(), stub!\n");
return S_OK;
}
static IRpcChannelBufferVtbl pipebufvt = {
PipeBuf_QueryInterface,
PipeBuf_AddRef,
PipeBuf_Release,
PipeBuf_GetBuffer,
PipeBuf_SendReceive,
PipeBuf_FreeBuffer,
PipeBuf_GetDestCtx,
PipeBuf_IsConnected
};
/* returns a pipebuf for proxies */
HRESULT PIPE_GetNewPipeBuf(wine_marshal_id *mid, IRpcChannelBuffer **pipebuf)
{
wine_marshal_id ourid;
HANDLE handle;
PipeBuf *pbuf;
char pipefn[200];
/* connect to the apartment listener thread */
sprintf(pipefn,OLESTUBMGR"_%08lx%08lx",(DWORD)(mid->oxid >> 32),(DWORD)mid->oxid);
TRACE("proxy pipe: connecting to apartment listener thread: %s\n", pipefn);
while (TRUE)
{
BOOL ret = WaitNamedPipeA(pipefn, NMPWAIT_USE_DEFAULT_WAIT);
if (!ret)
{
ERR("Could not open named pipe %s, error %ld\n", pipefn, GetLastError());
return RPC_E_SERVER_DIED;
}
handle = CreateFileA(pipefn, GENERIC_READ | GENERIC_WRITE,
0, NULL, OPEN_EXISTING, 0, 0);
if (handle == INVALID_HANDLE_VALUE)
{
if (GetLastError() == ERROR_PIPE_BUSY) continue;
ERR("Could not open named pipe %s, error %ld\n", pipefn, GetLastError());
return RPC_E_SERVER_DIED;
}
break;
}
memset(&ourid,0,sizeof(ourid));
ourid.oxid = COM_CurrentApt()->oxid;
TRACE("constructing new pipebuf for proxy\n");
pbuf = (PipeBuf*)HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(PipeBuf));
pbuf->lpVtbl = &pipebufvt;
pbuf->ref = 1;
memcpy(&(pbuf->mid),mid,sizeof(*mid));
pbuf->pipe = dupe_handle(handle);
*pipebuf = (IRpcChannelBuffer*)pbuf;
return S_OK;
}
static HRESULT
create_server(REFCLSID rclsid)
{
static const WCHAR embedding[] = { ' ', '-','E','m','b','e','d','d','i','n','g',0 };
HKEY key;
char buf[200];
HRESULT hres = E_UNEXPECTED;
char xclsid[80];
WCHAR exe[MAX_PATH+1];
DWORD exelen = sizeof(exe);
WCHAR command[MAX_PATH+sizeof(embedding)/sizeof(WCHAR)];
STARTUPINFOW sinfo;
PROCESS_INFORMATION pinfo;
WINE_StringFromCLSID((LPCLSID)rclsid,xclsid);
sprintf(buf,"CLSID\\%s\\LocalServer32",xclsid);
hres = RegOpenKeyExA(HKEY_CLASSES_ROOT, buf, 0, KEY_READ, &key);
if (hres != ERROR_SUCCESS) {
WARN("CLSID %s not registered as LocalServer32\n", xclsid);
return REGDB_E_READREGDB; /* Probably */
}
memset(exe,0,sizeof(exe));
hres= RegQueryValueExW(key, NULL, NULL, NULL, (LPBYTE)exe, &exelen);
RegCloseKey(key);
if (hres) {
WARN("No default value for LocalServer32 key\n");
return REGDB_E_CLASSNOTREG; /* FIXME: check retval */
}
memset(&sinfo,0,sizeof(sinfo));
sinfo.cb = sizeof(sinfo);
/* EXE servers are started with the -Embedding switch. MSDN also claims /Embedding is used,
* 9x does -Embedding, perhaps an 9x/NT difference?
*/
strcpyW(command, exe);
strcatW(command, embedding);
TRACE("activating local server '%s' for %s\n", debugstr_w(command), xclsid);
if (!CreateProcessW(exe, command, NULL, NULL, FALSE, 0, NULL, NULL, &sinfo, &pinfo)) {
WARN("failed to run local server %s\n", debugstr_w(exe));
return E_FAIL;
}
return S_OK;
}
/*
* start_local_service() - start a service given its name and parameters
*/
static DWORD
start_local_service(LPCWSTR name, DWORD num, LPWSTR *params)
{
SC_HANDLE handle, hsvc;
DWORD r = ERROR_FUNCTION_FAILED;
TRACE("Starting service %s %ld params\n", debugstr_w(name), num);
handle = OpenSCManagerW(NULL, NULL, SC_MANAGER_ALL_ACCESS);
if (!handle)
return r;
hsvc = OpenServiceW(handle, name, SC_MANAGER_ALL_ACCESS);
if (hsvc)
{
if(StartServiceW(hsvc, num, (LPCWSTR*)params))
r = ERROR_SUCCESS;
else
r = GetLastError();
if (r == ERROR_SERVICE_ALREADY_RUNNING)
r = ERROR_SUCCESS;
CloseServiceHandle(hsvc);
}
CloseServiceHandle(handle);
TRACE("StartService returned error %ld (%s)\n", r, r?"ok":"failed");
return r;
}
/*
* create_local_service() - start a COM server in a service
*
* To start a Local Service, we read the AppID value under
* the class's CLSID key, then open the HKCR\\AppId key specified
* there and check for a LocalService value.
*
* Note: Local Services are not supported under Windows 9x
*/
static HRESULT
create_local_service(REFCLSID rclsid)
{
HRESULT hres = REGDB_E_READREGDB;
WCHAR buf[40], keyname[50];
static const WCHAR szClsId[] = { 'C','L','S','I','D','\\',0 };
static const WCHAR szAppId[] = { 'A','p','p','I','d',0 };
static const WCHAR szAppIdKey[] = { 'A','p','p','I','d','\\',0 };
static const WCHAR szLocalService[] = { 'L','o','c','a','l','S','e','r','v','i','c','e',0 };
static const WCHAR szServiceParams[] = {'S','e','r','v','i','c','e','P','a','r','a','m','s',0};
HKEY hkey;
LONG r;
DWORD type, sz;
TRACE("Attempting to start Local service for %s\n", debugstr_guid(rclsid));
/* read the AppID value under the class's key */
strcpyW(keyname,szClsId);
StringFromGUID2(rclsid,&keyname[6],39);
r = RegOpenKeyExW(HKEY_CLASSES_ROOT, keyname, 0, KEY_READ, &hkey);
if (r!=ERROR_SUCCESS)
return hres;
sz = sizeof buf;
r = RegQueryValueExW(hkey, szAppId, NULL, &type, (LPBYTE)buf, &sz);
RegCloseKey(hkey);
if (r!=ERROR_SUCCESS || type!=REG_SZ)
return hres;
/* read the LocalService and ServiceParameters values from the AppID key */
strcpyW(keyname, szAppIdKey);
strcatW(keyname, buf);
r = RegOpenKeyExW(HKEY_CLASSES_ROOT, keyname, 0, KEY_READ, &hkey);
if (r!=ERROR_SUCCESS)
return hres;
sz = sizeof buf;
r = RegQueryValueExW(hkey, szLocalService, NULL, &type, (LPBYTE)buf, &sz);
if (r==ERROR_SUCCESS && type==REG_SZ)
{
DWORD num_args = 0;
LPWSTR args[1] = { NULL };
/*
* FIXME: I'm not really sure how to deal with the service parameters.
* I suspect that the string returned from RegQueryValueExW
* should be split into a number of arguments by spaces.
* It would make more sense if ServiceParams contained a
* REG_MULTI_SZ here, but it's a REG_SZ for the services
* that I'm interested in for the moment.
*/
r = RegQueryValueExW(hkey, szServiceParams, NULL, &type, NULL, &sz);
if (r == ERROR_SUCCESS && type == REG_SZ && sz)
{
args[0] = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sz);
num_args++;
RegQueryValueExW(hkey, szServiceParams, NULL, &type, (LPBYTE)args[0], &sz);
}
r = start_local_service(buf, num_args, args);
if (r==ERROR_SUCCESS)
hres = S_OK;
HeapFree(GetProcessHeap(),0,args[0]);
}
RegCloseKey(hkey);
return hres;
}
/* http://msdn.microsoft.com/library/en-us/dnmsj99/html/com0199.asp, Figure 4 */
HRESULT create_marshalled_proxy(REFCLSID rclsid, REFIID iid, LPVOID *ppv)
{
HRESULT hres;
HANDLE hPipe;
char pipefn[200];
DWORD res, bufferlen;
char marshalbuffer[200];
IStream *pStm;
LARGE_INTEGER seekto;
ULARGE_INTEGER newpos;
int tries = 0;
static const int MAXTRIES = 10000;
TRACE("rclsid=%s, iid=%s\n", debugstr_guid(rclsid), debugstr_guid(iid));
strcpy(pipefn,PIPEPREF);
WINE_StringFromCLSID(rclsid,pipefn+strlen(PIPEPREF));
while (tries++ < MAXTRIES) {
TRACE("waiting for %s\n", pipefn);
WaitNamedPipeA( pipefn, NMPWAIT_WAIT_FOREVER );
hPipe = CreateFileA(pipefn, GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, 0);
if (hPipe == INVALID_HANDLE_VALUE) {
if (tries == 1) {
if ( (hres = create_server(rclsid)) &&
(hres = create_local_service(rclsid)) )
return hres;
Sleep(1000);
} else {
WARN("Connecting to %s, no response yet, retrying: le is %lx\n",pipefn,GetLastError());
Sleep(1000);
}
continue;
}
bufferlen = 0;
if (!ReadFile(hPipe,marshalbuffer,sizeof(marshalbuffer),&bufferlen,NULL)) {
FIXME("Failed to read marshal id from classfactory of %s.\n",debugstr_guid(rclsid));
Sleep(1000);
continue;
}
TRACE("read marshal id from pipe\n");
CloseHandle(hPipe);
break;
}
if (tries >= MAXTRIES)
return E_NOINTERFACE;
hres = CreateStreamOnHGlobal(0,TRUE,&pStm);
if (hres) return hres;
hres = IStream_Write(pStm,marshalbuffer,bufferlen,&res);
if (hres) goto out;
seekto.u.LowPart = 0;seekto.u.HighPart = 0;
hres = IStream_Seek(pStm,seekto,SEEK_SET,&newpos);
TRACE("unmarshalling classfactory\n");
hres = CoUnmarshalInterface(pStm,&IID_IClassFactory,ppv);
out:
IStream_Release(pStm);
return hres;
}
/* this reads an RPC from the given pipe and places it in the global reqs array */
static HRESULT process_incoming_rpc(HANDLE pipe)
{
DWORD reqtype;
HRESULT hres = S_OK;
hres = read_pipe(pipe,&reqtype,sizeof(reqtype));
if (hres) return hres;
/* only received by servers */
if (reqtype == REQTYPE_REQUEST)
{
struct rpc *xreq;
RPC_GetRequest(&xreq);
xreq->hPipe = pipe;
hres = read_pipe(pipe,&(xreq->reqh),sizeof(xreq->reqh));
if (hres)
{
xreq->state = REQSTATE_DONE;
return hres;
}
xreq->resph.reqid = xreq->reqh.reqid;
xreq->Buffer = HeapAlloc(GetProcessHeap(),0, xreq->reqh.cbBuffer);
hres = read_pipe(pipe,xreq->Buffer,xreq->reqh.cbBuffer);
if (hres) goto end;
TRACE("received RPC for IPID %s\n", debugstr_guid(&xreq->reqh.ipid));
xreq->state = REQSTATE_REQ_GOT;
goto end;
}
else if (reqtype == REQTYPE_RESPONSE)
{
struct response_header resph;
int i;
hres = read_pipe(pipe,&resph,sizeof(resph));
if (hres) goto end;
TRACE("read RPC response\n");
for (i = nrofreqs; i--;)
{
struct rpc *xreq = reqs[i];
if (xreq->state != REQSTATE_REQ_WAITING_FOR_REPLY)
continue;
if (xreq->reqh.reqid == resph.reqid)
{
memcpy(&(xreq->resph),&resph,sizeof(resph));
if (xreq->Buffer)
xreq->Buffer = HeapReAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,xreq->Buffer,xreq->resph.cbBuffer);
else
xreq->Buffer = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,xreq->resph.cbBuffer);
hres = read_pipe(pipe,xreq->Buffer,xreq->resph.cbBuffer);
if (hres) goto end;
TRACE("received response for reqid 0x%lx\n", xreq->reqh.reqid);
xreq->state = REQSTATE_RESP_GOT;
goto end;
}
}
ERR("protocol error: did not find request for id %lx\n",resph.reqid);
hres = E_FAIL;
goto end;
}
ERR("protocol error: unknown reqtype %ld\n",reqtype);
hres = E_FAIL;
end:
return hres;
}
struct stub_dispatch_params
{
struct apartment *apt;
HANDLE pipe;
};
/* This thread listens on the given pipe for requests to any stub manager */
static DWORD WINAPI client_dispatch_thread(LPVOID param)
{
HANDLE pipe = ((struct stub_dispatch_params *)param)->pipe;
struct apartment *apt = ((struct stub_dispatch_params *)param)->apt;
HRESULT hres = S_OK;
HANDLE shutdown_event = dupe_handle(apt->shutdown_event);
HeapFree(GetProcessHeap(), 0, param);
/* join marshalling apartment. fixme: this stuff is all very wrong, threading needs to work like native */
COM_CurrentInfo()->apt = apt;
while (TRUE)
{
int i;
TRACE("waiting for RPC on OXID: %08lx%08lx\n", (DWORD)(apt->oxid >> 32), (DWORD)(apt->oxid));
/* read a new request into the global array, block if no requests have been sent */
hres = process_incoming_rpc(pipe);
if (hres) break;
/* do you expect me to talk? */
if (WaitForSingleObject(shutdown_event, 0) == WAIT_OBJECT_0)
{
/* no mr bond, i expect you to die! bwahaha */
CloseHandle(shutdown_event);
break;
}
TRACE("received RPC on OXID: %08lx%08lx\n", (DWORD)(apt->oxid >> 32), (DWORD)(apt->oxid));
/* now scan the array looking for the RPC just loaded */
for (i=nrofreqs;i--;)
{
struct rpc *req = reqs[i];
if ((req->state == REQSTATE_REQ_GOT) && (req->hPipe == pipe))
{
hres = COM_InvokeAndRpcSend(req);
if (!hres) break;
}
}
}
TRACE("exiting with hres %lx\n",hres);
DisconnectNamedPipe(pipe);
CloseHandle(pipe);
return 0;
}
struct apartment_listener_params
{
APARTMENT *apt;
HANDLE event;
};
/* This thread listens on a named pipe for each apartment that exports
* objects. It deals with incoming connection requests. Each time a
* client connects a separate thread is spawned for that particular
* connection.
*
* This architecture is different in native DCOM.
*/
static DWORD WINAPI apartment_listener_thread(LPVOID p)
{
char pipefn[200];
HANDLE listenPipe, thread_handle;
OVERLAPPED overlapped;
HANDLE wait[2];
struct apartment_listener_params * params = (struct apartment_listener_params *)p;
struct apartment *apt = params->apt;
HANDLE event = params->event;
HANDLE apt_shutdown_event = dupe_handle(apt->shutdown_event);
OXID this_oxid = apt->oxid; /* copy here so we can print it when we shut down */
HeapFree(GetProcessHeap(), 0, params);
overlapped.hEvent = CreateEventA(NULL, TRUE, FALSE, NULL);
/* we must join the marshalling threads apartment. we already have a ref here */
COM_CurrentInfo()->apt = apt;
sprintf(pipefn,OLESTUBMGR"_%08lx%08lx", (DWORD)(apt->oxid >> 32), (DWORD)(apt->oxid));
TRACE("Apartment listener thread starting on (%s)\n",pipefn);
while (TRUE)
{
struct stub_dispatch_params *params;
DWORD res;
listenPipe = CreateNamedPipeA(
pipefn,
PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
PIPE_TYPE_BYTE|PIPE_WAIT,
PIPE_UNLIMITED_INSTANCES,
4096,
4096,
500 /* 0.5 seconds */,
NULL
);
/* tell function that started this thread that we have attempted to created the
* named pipe. */
if (event) {
SetEvent(event);
event = NULL;
}
if (listenPipe == INVALID_HANDLE_VALUE) {
FIXME("pipe creation failed for %s, error %ld\n",pipefn,GetLastError());
break; /* permanent failure, so quit stubmgr thread */
}
TRACE("waiting for a client ...\n");
/* an already connected pipe is not an error */
if (!ConnectNamedPipe(listenPipe, &overlapped))
{
DWORD le = GetLastError();
if ((le != ERROR_IO_PENDING) && (le != ERROR_PIPE_CONNECTED))
{
ERR("Failure during ConnectNamedPipe %ld!\n",GetLastError());
CloseHandle(listenPipe);
continue;
}
}
/* wait for action */
wait[0] = apt_shutdown_event;
wait[1] = overlapped.hEvent;
res = WaitForMultipleObjectsEx(2, wait, FALSE, INFINITE, FALSE);
if (res == WAIT_OBJECT_0) break;
ResetEvent(overlapped.hEvent);
/* start the stub dispatch thread for this connection */
TRACE("starting stub dispatch thread for OXID %08lx%08lx\n", (DWORD)(apt->oxid >> 32), (DWORD)(apt->oxid));
params = HeapAlloc(GetProcessHeap(), 0, sizeof(struct stub_dispatch_params));
if (!params)
{
ERR("out of memory, dropping this client\n");
CloseHandle(listenPipe);
continue;
}
params->apt = apt;
params->pipe = listenPipe;
thread_handle = CreateThread(NULL, 0, &client_dispatch_thread, params, 0, NULL);
CloseHandle(thread_handle);
}
TRACE("shutting down: %s\n", wine_dbgstr_longlong(this_oxid));
DisconnectNamedPipe(listenPipe);
CloseHandle(listenPipe);
CloseHandle(overlapped.hEvent);
CloseHandle(apt_shutdown_event);
return 0;
}
void start_apartment_listener_thread()
{
APARTMENT *apt = COM_CurrentApt();
assert( apt );
TRACE("apt->listenertid=%ld\n", apt->listenertid);
/* apt->listenertid is a hack which needs to die at some point, as
* it leaks information into the apartment structure. in fact,
* this thread isn't quite correct anyway as native RPC doesn't
* use a thread per apartment at all, instead the dispatch thread
* either enters the apartment to perform the RPC (for MTAs, RTAs)
* or does a context switch into it for STAs.
*/
if (!apt->listenertid)
{
HANDLE thread;
HANDLE event = CreateEventW(NULL, TRUE, FALSE, NULL);
struct apartment_listener_params * params = HeapAlloc(GetProcessHeap(), 0, sizeof(*params));
params->apt = apt;
params->event = event;
thread = CreateThread(NULL, 0, apartment_listener_thread, params, 0, &apt->listenertid);
CloseHandle(thread);
/* wait for pipe to be created before returning, otherwise we
* might try to use it and fail */
WaitForSingleObject(event, INFINITE);
CloseHandle(event);
}
}
struct local_server_params
{
CLSID clsid;
IStream *stream;
};
static DWORD WINAPI local_server_thread(LPVOID param)
{
struct local_server_params * lsp = (struct local_server_params *)param;
HANDLE hPipe;
char pipefn[200];
HRESULT hres;
IStream *pStm = lsp->stream;
STATSTG ststg;
unsigned char *buffer;
int buflen;
LARGE_INTEGER seekto;
ULARGE_INTEGER newpos;
ULONG res;
TRACE("Starting threader for %s.\n",debugstr_guid(&lsp->clsid));
strcpy(pipefn,PIPEPREF);
WINE_StringFromCLSID(&lsp->clsid,pipefn+strlen(PIPEPREF));
HeapFree(GetProcessHeap(), 0, lsp);
hPipe = CreateNamedPipeA( pipefn, PIPE_ACCESS_DUPLEX,
PIPE_TYPE_BYTE|PIPE_WAIT, PIPE_UNLIMITED_INSTANCES,
4096, 4096, 500 /* 0.5 second timeout */, NULL );
if (hPipe == INVALID_HANDLE_VALUE)
{
FIXME("pipe creation failed for %s, le is %ld\n",pipefn,GetLastError());
return 1;
}
while (1) {
if (!ConnectNamedPipe(hPipe,NULL)) {
ERR("Failure during ConnectNamedPipe %ld, ABORT!\n",GetLastError());
break;
}
TRACE("marshalling IClassFactory to client\n");
hres = IStream_Stat(pStm,&ststg,0);
if (hres) return hres;
buflen = ststg.cbSize.u.LowPart;
buffer = HeapAlloc(GetProcessHeap(),0,buflen);
seekto.u.LowPart = 0;
seekto.u.HighPart = 0;
hres = IStream_Seek(pStm,seekto,SEEK_SET,&newpos);
if (hres) {
FIXME("IStream_Seek failed, %lx\n",hres);
return hres;
}
hres = IStream_Read(pStm,buffer,buflen,&res);
if (hres) {
FIXME("Stream Read failed, %lx\n",hres);
return hres;
}
WriteFile(hPipe,buffer,buflen,&res,NULL);
FlushFileBuffers(hPipe);
DisconnectNamedPipe(hPipe);
TRACE("done marshalling IClassFactory\n");
}
CloseHandle(hPipe);
IStream_Release(pStm);
return 0;
}
void RPC_StartLocalServer(REFCLSID clsid, IStream *stream)
{
DWORD tid;
HANDLE thread;
struct local_server_params *lsp = HeapAlloc(GetProcessHeap(), 0, sizeof(*lsp));
lsp->clsid = *clsid;
lsp->stream = stream;
thread = CreateThread(NULL, 0, local_server_thread, lsp, 0, &tid);
CloseHandle(thread);
/* FIXME: failure handling */
}
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