/* * Marshalling library * * Copyright 2002 Marcus Meissner * Copyright 2004 Mike Hearn, for CodeWeavers * Copyright 2004 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA */ #include <stdarg.h> #include <string.h> #include <assert.h> #define COBJMACROS #include "windef.h" #include "winbase.h" #include "winuser.h" #include "objbase.h" #include "ole2.h" #include "winerror.h" #include "wine/unicode.h" #include "compobj_private.h" #include "wine/debug.h" WINE_DEFAULT_DEBUG_CHANNEL(ole); extern const CLSID CLSID_DfMarshal; /* number of refs given out for normal marshaling */ #define NORMALEXTREFS 5 /* private flag indicating that the object was marshaled as table-weak */ #define SORFP_TABLEWEAK SORF_OXRES1 /* private flag indicating that the caller does not want to notify the stub * when the proxy disconnects or is destroyed */ #define SORFP_NOLIFETIMEMGMT SORF_OXRES2 static HRESULT unmarshal_object(const STDOBJREF *stdobjref, APARTMENT *apt, MSHCTX dest_context, void *dest_context_data, REFIID riid, const OXID_INFO *oxid_info, void **object); /* Marshalling just passes a unique identifier to the remote client, * that makes it possible to find the passed interface again. * * So basically we need a set of values that make it unique. * * Note that the IUnknown_QI(ob,xiid,&ppv) always returns the SAME ppv value! * * A triple is used: OXID (apt id), OID (stub manager id), * IPID (interface ptr/stub id). * * OXIDs identify an apartment and are network scoped * OIDs identify a stub manager and are apartment scoped * IPIDs identify an interface stub and are apartment scoped */ static inline HRESULT get_facbuf_for_iid(REFIID riid, IPSFactoryBuffer **facbuf) { HRESULT hr; CLSID clsid; if ((hr = CoGetPSClsid(riid, &clsid))) return hr; return CoGetClassObject(&clsid, CLSCTX_INPROC_SERVER | WINE_CLSCTX_DONT_HOST, NULL, &IID_IPSFactoryBuffer, (LPVOID*)facbuf); } /* marshals an object into a STDOBJREF structure */ HRESULT marshal_object(APARTMENT *apt, STDOBJREF *stdobjref, REFIID riid, IUnknown *object, MSHLFLAGS mshlflags) { struct stub_manager *manager; struct ifstub *ifstub; BOOL tablemarshal; IRpcStubBuffer *stub = NULL; HRESULT hr; IUnknown *iobject = NULL; /* object of type riid */ hr = apartment_getoxid(apt, &stdobjref->oxid); if (hr != S_OK) return hr; hr = apartment_createwindowifneeded(apt); if (hr != S_OK) return hr; hr = IUnknown_QueryInterface(object, riid, (void **)&iobject); if (hr != S_OK) { ERR("object doesn't expose interface %s, failing with error 0x%08x\n", debugstr_guid(riid), hr); return E_NOINTERFACE; } /* IUnknown doesn't require a stub buffer, because it never goes out on * the wire */ if (!IsEqualIID(riid, &IID_IUnknown)) { IPSFactoryBuffer *psfb; hr = get_facbuf_for_iid(riid, &psfb); if (hr != S_OK) { ERR("couldn't get IPSFactory buffer for interface %s\n", debugstr_guid(riid)); IUnknown_Release(iobject); return hr; } hr = IPSFactoryBuffer_CreateStub(psfb, riid, iobject, &stub); IPSFactoryBuffer_Release(psfb); if (hr != S_OK) { ERR("Failed to create an IRpcStubBuffer from IPSFactory for %s with error 0x%08x\n", debugstr_guid(riid), hr); IUnknown_Release(iobject); return hr; } } stdobjref->flags = SORF_NULL; if (mshlflags & MSHLFLAGS_TABLEWEAK) stdobjref->flags |= SORFP_TABLEWEAK; if (mshlflags & MSHLFLAGS_NOPING) stdobjref->flags |= SORF_NOPING; if ((manager = get_stub_manager_from_object(apt, object))) TRACE("registering new ifstub on pre-existing manager\n"); else { TRACE("constructing new stub manager\n"); manager = new_stub_manager(apt, object); if (!manager) { if (stub) IRpcStubBuffer_Release(stub); IUnknown_Release(iobject); return E_OUTOFMEMORY; } } stdobjref->oid = manager->oid; tablemarshal = ((mshlflags & MSHLFLAGS_TABLESTRONG) || (mshlflags & MSHLFLAGS_TABLEWEAK)); /* make sure ifstub that we are creating is unique */ ifstub = stub_manager_find_ifstub(manager, riid, mshlflags); if (!ifstub) ifstub = stub_manager_new_ifstub(manager, stub, iobject, riid, mshlflags); if (stub) IRpcStubBuffer_Release(stub); IUnknown_Release(iobject); if (!ifstub) { stub_manager_int_release(manager); /* destroy the stub manager if it has no ifstubs by releasing * zero external references */ stub_manager_ext_release(manager, 0, FALSE, TRUE); return E_OUTOFMEMORY; } if (!tablemarshal) { stdobjref->cPublicRefs = NORMALEXTREFS; stub_manager_ext_addref(manager, stdobjref->cPublicRefs, FALSE); } else { stdobjref->cPublicRefs = 0; if (mshlflags & MSHLFLAGS_TABLESTRONG) stub_manager_ext_addref(manager, 1, FALSE); else stub_manager_ext_addref(manager, 0, TRUE); } /* FIXME: check return value */ RPC_RegisterInterface(riid); stdobjref->ipid = ifstub->ipid; stub_manager_int_release(manager); return S_OK; } /* Client-side identity of the server object */ static HRESULT proxy_manager_get_remunknown(struct proxy_manager * This, IRemUnknown **remunk); static void proxy_manager_destroy(struct proxy_manager * This); static HRESULT proxy_manager_find_ifproxy(struct proxy_manager * This, REFIID riid, struct ifproxy ** ifproxy_found); static HRESULT proxy_manager_query_local_interface(struct proxy_manager * This, REFIID riid, void ** ppv); static HRESULT WINAPI ClientIdentity_QueryInterface(IMultiQI * iface, REFIID riid, void ** ppv) { HRESULT hr; MULTI_QI mqi; TRACE("%s\n", debugstr_guid(riid)); mqi.pIID = riid; hr = IMultiQI_QueryMultipleInterfaces(iface, 1, &mqi); *ppv = (void *)mqi.pItf; return hr; } static ULONG WINAPI ClientIdentity_AddRef(IMultiQI * iface) { struct proxy_manager * This = (struct proxy_manager *)iface; TRACE("%p - before %d\n", iface, This->refs); return InterlockedIncrement(&This->refs); } static ULONG WINAPI ClientIdentity_Release(IMultiQI * iface) { struct proxy_manager * This = (struct proxy_manager *)iface; ULONG refs = InterlockedDecrement(&This->refs); TRACE("%p - after %d\n", iface, refs); if (!refs) proxy_manager_destroy(This); return refs; } static HRESULT WINAPI ClientIdentity_QueryMultipleInterfaces(IMultiQI *iface, ULONG cMQIs, MULTI_QI *pMQIs) { struct proxy_manager * This = (struct proxy_manager *)iface; REMQIRESULT *qiresults = NULL; ULONG nonlocal_mqis = 0; ULONG i; ULONG successful_mqis = 0; IID *iids = HeapAlloc(GetProcessHeap(), 0, cMQIs * sizeof(*iids)); /* mapping of RemQueryInterface index to QueryMultipleInterfaces index */ ULONG *mapping = HeapAlloc(GetProcessHeap(), 0, cMQIs * sizeof(*mapping)); TRACE("cMQIs: %d\n", cMQIs); /* try to get a local interface - this includes already active proxy * interfaces and also interfaces exposed by the proxy manager */ for (i = 0; i < cMQIs; i++) { TRACE("iid[%d] = %s\n", i, debugstr_guid(pMQIs[i].pIID)); pMQIs[i].hr = proxy_manager_query_local_interface(This, pMQIs[i].pIID, (void **)&pMQIs[i].pItf); if (pMQIs[i].hr == S_OK) successful_mqis++; else { iids[nonlocal_mqis] = *pMQIs[i].pIID; mapping[nonlocal_mqis] = i; nonlocal_mqis++; } } TRACE("%d interfaces not found locally\n", nonlocal_mqis); /* if we have more than one interface not found locally then we must try * to query the remote object for it */ if (nonlocal_mqis != 0) { IRemUnknown *remunk; HRESULT hr; IPID *ipid; /* get the ipid of the first entry */ /* FIXME: should we implement ClientIdentity on the ifproxies instead * of the proxy_manager so we use the correct ipid here? */ ipid = &LIST_ENTRY(list_head(&This->interfaces), struct ifproxy, entry)->stdobjref.ipid; /* get IRemUnknown proxy so we can communicate with the remote object */ hr = proxy_manager_get_remunknown(This, &remunk); if (SUCCEEDED(hr)) { hr = IRemUnknown_RemQueryInterface(remunk, ipid, NORMALEXTREFS, nonlocal_mqis, iids, &qiresults); IRemUnknown_Release(remunk); if (FAILED(hr)) ERR("IRemUnknown_RemQueryInterface failed with error 0x%08x\n", hr); } /* IRemUnknown_RemQueryInterface can return S_FALSE if only some of * the interfaces were returned */ if (SUCCEEDED(hr)) { /* try to unmarshal each object returned to us */ for (i = 0; i < nonlocal_mqis; i++) { ULONG index = mapping[i]; HRESULT hrobj = qiresults[i].hResult; if (hrobj == S_OK) hrobj = unmarshal_object(&qiresults[i].std, COM_CurrentApt(), This->dest_context, This->dest_context_data, pMQIs[index].pIID, &This->oxid_info, (void **)&pMQIs[index].pItf); if (hrobj == S_OK) successful_mqis++; else ERR("Failed to get pointer to interface %s\n", debugstr_guid(pMQIs[index].pIID)); pMQIs[index].hr = hrobj; } } /* free the memory allocated by the proxy */ CoTaskMemFree(qiresults); } TRACE("%d/%d successfully queried\n", successful_mqis, cMQIs); HeapFree(GetProcessHeap(), 0, iids); HeapFree(GetProcessHeap(), 0, mapping); if (successful_mqis == cMQIs) return S_OK; /* we got all requested interfaces */ else if (successful_mqis == 0) return E_NOINTERFACE; /* we didn't get any interfaces */ else return S_FALSE; /* we got some interfaces */ } static const IMultiQIVtbl ClientIdentity_Vtbl = { ClientIdentity_QueryInterface, ClientIdentity_AddRef, ClientIdentity_Release, ClientIdentity_QueryMultipleInterfaces }; /* FIXME: remove these */ static HRESULT WINAPI StdMarshalImpl_GetUnmarshalClass(LPMARSHAL iface, REFIID riid, void* pv, DWORD dwDestContext, void* pvDestContext, DWORD mshlflags, CLSID* pCid); static HRESULT WINAPI StdMarshalImpl_GetMarshalSizeMax(LPMARSHAL iface, REFIID riid, void* pv, DWORD dwDestContext, void* pvDestContext, DWORD mshlflags, DWORD* pSize); static HRESULT WINAPI StdMarshalImpl_UnmarshalInterface(LPMARSHAL iface, IStream *pStm, REFIID riid, void **ppv); static HRESULT WINAPI StdMarshalImpl_ReleaseMarshalData(LPMARSHAL iface, IStream *pStm); static HRESULT WINAPI StdMarshalImpl_DisconnectObject(LPMARSHAL iface, DWORD dwReserved); static HRESULT WINAPI Proxy_QueryInterface(IMarshal *iface, REFIID riid, void **ppvObject) { ICOM_THIS_MULTI(struct proxy_manager, lpVtblMarshal, iface); return IMultiQI_QueryInterface((IMultiQI *)&This->lpVtbl, riid, ppvObject); } static ULONG WINAPI Proxy_AddRef(IMarshal *iface) { ICOM_THIS_MULTI(struct proxy_manager, lpVtblMarshal, iface); return IMultiQI_AddRef((IMultiQI *)&This->lpVtbl); } static ULONG WINAPI Proxy_Release(IMarshal *iface) { ICOM_THIS_MULTI(struct proxy_manager, lpVtblMarshal, iface); return IMultiQI_Release((IMultiQI *)&This->lpVtbl); } static HRESULT WINAPI Proxy_MarshalInterface( LPMARSHAL iface, IStream *pStm, REFIID riid, void* pv, DWORD dwDestContext, void* pvDestContext, DWORD mshlflags) { ICOM_THIS_MULTI(struct proxy_manager, lpVtblMarshal, iface); HRESULT hr; struct ifproxy *ifproxy; TRACE("(...,%s,...)\n", debugstr_guid(riid)); hr = proxy_manager_find_ifproxy(This, riid, &ifproxy); if (SUCCEEDED(hr)) { STDOBJREF stdobjref = ifproxy->stdobjref; stdobjref.cPublicRefs = 0; if ((mshlflags != MSHLFLAGS_TABLEWEAK) && (mshlflags != MSHLFLAGS_TABLESTRONG)) { ULONG cPublicRefs = ifproxy->refs; ULONG cPublicRefsOld; /* optimization - share out proxy's public references if possible * instead of making new proxy do a roundtrip through the server */ do { ULONG cPublicRefsNew; cPublicRefsOld = cPublicRefs; stdobjref.cPublicRefs = cPublicRefs / 2; cPublicRefsNew = cPublicRefs - stdobjref.cPublicRefs; cPublicRefs = InterlockedCompareExchange( (LONG *)&ifproxy->refs, cPublicRefsNew, cPublicRefsOld); } while (cPublicRefs != cPublicRefsOld); } /* normal and table-strong marshaling need at least one reference */ if (!stdobjref.cPublicRefs && (mshlflags != MSHLFLAGS_TABLEWEAK)) { IRemUnknown *remunk; hr = proxy_manager_get_remunknown(This, &remunk); if (hr == S_OK) { HRESULT hrref = S_OK; REMINTERFACEREF rif; rif.ipid = ifproxy->stdobjref.ipid; rif.cPublicRefs = (mshlflags == MSHLFLAGS_TABLESTRONG) ? 1 : NORMALEXTREFS; rif.cPrivateRefs = 0; hr = IRemUnknown_RemAddRef(remunk, 1, &rif, &hrref); IRemUnknown_Release(remunk); if (hr == S_OK && hrref == S_OK) { /* table-strong marshaling doesn't give the refs to the * client that unmarshals the STDOBJREF */ if (mshlflags != MSHLFLAGS_TABLESTRONG) stdobjref.cPublicRefs = rif.cPublicRefs; } else ERR("IRemUnknown_RemAddRef returned with 0x%08x, hrref = 0x%08x\n", hr, hrref); } } if (SUCCEEDED(hr)) { TRACE("writing stdobjref:\n\tflags = %04lx\n\tcPublicRefs = %ld\n\toxid = %s\n\toid = %s\n\tipid = %s\n", stdobjref.flags, stdobjref.cPublicRefs, wine_dbgstr_longlong(stdobjref.oxid), wine_dbgstr_longlong(stdobjref.oid), debugstr_guid(&stdobjref.ipid)); hr = IStream_Write(pStm, &stdobjref, sizeof(stdobjref), NULL); } } else { /* we don't have the interface already unmarshaled so we have to * request the object from the server */ IRemUnknown *remunk; IPID *ipid; REMQIRESULT *qiresults = NULL; IID iid = *riid; /* get the ipid of the first entry */ /* FIXME: should we implement ClientIdentity on the ifproxies instead * of the proxy_manager so we use the correct ipid here? */ ipid = &LIST_ENTRY(list_head(&This->interfaces), struct ifproxy, entry)->stdobjref.ipid; /* get IRemUnknown proxy so we can communicate with the remote object */ hr = proxy_manager_get_remunknown(This, &remunk); if (hr == S_OK) { hr = IRemUnknown_RemQueryInterface(remunk, ipid, NORMALEXTREFS, 1, &iid, &qiresults); if (SUCCEEDED(hr)) { hr = IStream_Write(pStm, &qiresults->std, sizeof(qiresults->std), NULL); if (FAILED(hr)) { REMINTERFACEREF rif; rif.ipid = qiresults->std.ipid; rif.cPublicRefs = qiresults->std.cPublicRefs; rif.cPrivateRefs = 0; IRemUnknown_RemRelease(remunk, 1, &rif); } CoTaskMemFree(qiresults); } else ERR("IRemUnknown_RemQueryInterface failed with error 0x%08x\n", hr); IRemUnknown_Release(remunk); } } return hr; } static const IMarshalVtbl ProxyMarshal_Vtbl = { Proxy_QueryInterface, Proxy_AddRef, Proxy_Release, StdMarshalImpl_GetUnmarshalClass, StdMarshalImpl_GetMarshalSizeMax, Proxy_MarshalInterface, StdMarshalImpl_UnmarshalInterface, StdMarshalImpl_ReleaseMarshalData, StdMarshalImpl_DisconnectObject }; static HRESULT WINAPI ProxyCliSec_QueryInterface(IClientSecurity *iface, REFIID riid, void **ppvObject) { ICOM_THIS_MULTI(struct proxy_manager, lpVtblCliSec, iface); return IMultiQI_QueryInterface((IMultiQI *)&This->lpVtbl, riid, ppvObject); } static ULONG WINAPI ProxyCliSec_AddRef(IClientSecurity *iface) { ICOM_THIS_MULTI(struct proxy_manager, lpVtblCliSec, iface); return IMultiQI_AddRef((IMultiQI *)&This->lpVtbl); } static ULONG WINAPI ProxyCliSec_Release(IClientSecurity *iface) { ICOM_THIS_MULTI(struct proxy_manager, lpVtblCliSec, iface); return IMultiQI_Release((IMultiQI *)&This->lpVtbl); } static HRESULT WINAPI ProxyCliSec_QueryBlanket(IClientSecurity *iface, IUnknown *pProxy, DWORD *pAuthnSvc, DWORD *pAuthzSvc, OLECHAR **ppServerPrincName, DWORD *pAuthnLevel, DWORD *pImpLevel, void **pAuthInfo, DWORD *pCapabilities) { FIXME("(%p, %p, %p, %p, %p, %p, %p, %p): stub\n", pProxy, pAuthnSvc, pAuthzSvc, ppServerPrincName, pAuthnLevel, pImpLevel, pAuthInfo, pCapabilities); if (pAuthnSvc) *pAuthnSvc = 0; if (pAuthzSvc) *pAuthzSvc = 0; if (ppServerPrincName) *ppServerPrincName = NULL; if (pAuthnLevel) *pAuthnLevel = RPC_C_AUTHN_LEVEL_DEFAULT; if (pImpLevel) *pImpLevel = RPC_C_IMP_LEVEL_DEFAULT; if (pAuthInfo) *pAuthInfo = NULL; if (pCapabilities) *pCapabilities = EOAC_NONE; return E_NOTIMPL; } static HRESULT WINAPI ProxyCliSec_SetBlanket(IClientSecurity *iface, IUnknown *pProxy, DWORD AuthnSvc, DWORD AuthzSvc, OLECHAR *pServerPrincName, DWORD AuthnLevel, DWORD ImpLevel, void *pAuthInfo, DWORD Capabilities) { FIXME("(%p, %d, %d, %s, %d, %d, %p, 0x%x): stub\n", pProxy, AuthnSvc, AuthzSvc, debugstr_w(pServerPrincName), AuthnLevel, ImpLevel, pAuthInfo, Capabilities); return E_NOTIMPL; } static HRESULT WINAPI ProxyCliSec_CopyProxy(IClientSecurity *iface, IUnknown *pProxy, IUnknown **ppCopy) { FIXME("(%p, %p): stub\n", pProxy, ppCopy); *ppCopy = NULL; return E_NOTIMPL; } static const IClientSecurityVtbl ProxyCliSec_Vtbl = { ProxyCliSec_QueryInterface, ProxyCliSec_AddRef, ProxyCliSec_Release, ProxyCliSec_QueryBlanket, ProxyCliSec_SetBlanket, ProxyCliSec_CopyProxy }; static HRESULT ifproxy_get_public_ref(struct ifproxy * This) { HRESULT hr = S_OK; if (WAIT_OBJECT_0 != WaitForSingleObject(This->parent->remoting_mutex, INFINITE)) { ERR("Wait failed for ifproxy %p\n", This); return E_UNEXPECTED; } if (This->refs == 0) { IRemUnknown *remunk = NULL; TRACE("getting public ref for ifproxy %p\n", This); hr = proxy_manager_get_remunknown(This->parent, &remunk); if (hr == S_OK) { HRESULT hrref = S_OK; REMINTERFACEREF rif; rif.ipid = This->stdobjref.ipid; rif.cPublicRefs = NORMALEXTREFS; rif.cPrivateRefs = 0; hr = IRemUnknown_RemAddRef(remunk, 1, &rif, &hrref); IRemUnknown_Release(remunk); if (hr == S_OK && hrref == S_OK) InterlockedExchangeAdd((LONG *)&This->refs, NORMALEXTREFS); else ERR("IRemUnknown_RemAddRef returned with 0x%08x, hrref = 0x%08x\n", hr, hrref); } } ReleaseMutex(This->parent->remoting_mutex); return hr; } static HRESULT ifproxy_release_public_refs(struct ifproxy * This) { HRESULT hr = S_OK; LONG public_refs; if (WAIT_OBJECT_0 != WaitForSingleObject(This->parent->remoting_mutex, INFINITE)) { ERR("Wait failed for ifproxy %p\n", This); return E_UNEXPECTED; } public_refs = This->refs; if (public_refs > 0) { IRemUnknown *remunk = NULL; TRACE("releasing %d refs\n", public_refs); hr = proxy_manager_get_remunknown(This->parent, &remunk); if (hr == S_OK) { REMINTERFACEREF rif; rif.ipid = This->stdobjref.ipid; rif.cPublicRefs = public_refs; rif.cPrivateRefs = 0; hr = IRemUnknown_RemRelease(remunk, 1, &rif); IRemUnknown_Release(remunk); if (hr == S_OK) InterlockedExchangeAdd((LONG *)&This->refs, -public_refs); else if (hr == RPC_E_DISCONNECTED) WARN("couldn't release references because object was " "disconnected: oxid = %s, oid = %s\n", wine_dbgstr_longlong(This->parent->oxid), wine_dbgstr_longlong(This->parent->oid)); else ERR("IRemUnknown_RemRelease failed with error 0x%08x\n", hr); } } ReleaseMutex(This->parent->remoting_mutex); return hr; } /* should be called inside This->parent->cs critical section */ static void ifproxy_disconnect(struct ifproxy * This) { ifproxy_release_public_refs(This); if (This->proxy) IRpcProxyBuffer_Disconnect(This->proxy); IRpcChannelBuffer_Release(This->chan); This->chan = NULL; } /* should be called in This->parent->cs critical section if it is an entry in parent's list */ static void ifproxy_destroy(struct ifproxy * This) { TRACE("%p\n", This); /* release public references to this object so that the stub can know * when to destroy itself */ ifproxy_release_public_refs(This); list_remove(&This->entry); if (This->chan) { IRpcChannelBuffer_Release(This->chan); This->chan = NULL; } if (This->proxy) IRpcProxyBuffer_Release(This->proxy); HeapFree(GetProcessHeap(), 0, This); } static HRESULT proxy_manager_construct( APARTMENT * apt, ULONG sorflags, OXID oxid, OID oid, const OXID_INFO *oxid_info, struct proxy_manager ** proxy_manager) { struct proxy_manager * This = HeapAlloc(GetProcessHeap(), 0, sizeof(*This)); if (!This) return E_OUTOFMEMORY; This->remoting_mutex = CreateMutexW(NULL, FALSE, NULL); if (!This->remoting_mutex) { HeapFree(GetProcessHeap(), 0, This); return HRESULT_FROM_WIN32(GetLastError()); } if (oxid_info) { This->oxid_info.dwPid = oxid_info->dwPid; This->oxid_info.dwTid = oxid_info->dwTid; This->oxid_info.ipidRemUnknown = oxid_info->ipidRemUnknown; This->oxid_info.dwAuthnHint = oxid_info->dwAuthnHint; This->oxid_info.psa = NULL /* FIXME: copy from oxid_info */; } else { HRESULT hr = RPC_ResolveOxid(oxid, &This->oxid_info); if (FAILED(hr)) { CloseHandle(This->remoting_mutex); HeapFree(GetProcessHeap(), 0, This); return hr; } } This->lpVtbl = &ClientIdentity_Vtbl; This->lpVtblMarshal = &ProxyMarshal_Vtbl; This->lpVtblCliSec = &ProxyCliSec_Vtbl; list_init(&This->entry); list_init(&This->interfaces); InitializeCriticalSection(&This->cs); DEBUG_SET_CRITSEC_NAME(&This->cs, "proxy_manager"); /* the apartment the object was unmarshaled into */ This->parent = apt; /* the source apartment and id of the object */ This->oxid = oxid; This->oid = oid; This->refs = 1; /* the DCOM draft specification states that the SORF_NOPING flag is * proxy manager specific, not ifproxy specific, so this implies that we * should store the STDOBJREF flags here in the proxy manager. */ This->sorflags = sorflags; /* we create the IRemUnknown proxy on demand */ This->remunk = NULL; /* initialise these values to the weakest values and they will be * overwritten in proxy_manager_set_context */ This->dest_context = MSHCTX_INPROC; This->dest_context_data = NULL; EnterCriticalSection(&apt->cs); /* FIXME: we are dependent on the ordering in here to make sure a proxy's * IRemUnknown proxy doesn't get destroyed before the regual proxy does * because we need the IRemUnknown proxy during the destruction of the * regular proxy. Ideally, we should maintain a separate list for the * IRemUnknown proxies that need late destruction */ list_add_tail(&apt->proxies, &This->entry); LeaveCriticalSection(&apt->cs); TRACE("%p created for OXID %s, OID %s\n", This, wine_dbgstr_longlong(oxid), wine_dbgstr_longlong(oid)); *proxy_manager = This; return S_OK; } static inline void proxy_manager_set_context(struct proxy_manager *This, MSHCTX dest_context, void *dest_context_data) { MSHCTX old_dest_context = This->dest_context; MSHCTX new_dest_context; do { new_dest_context = old_dest_context; /* "stronger" values overwrite "weaker" values. stronger values are * ones that disable more optimisations */ switch (old_dest_context) { case MSHCTX_INPROC: new_dest_context = dest_context; break; case MSHCTX_CROSSCTX: switch (dest_context) { case MSHCTX_INPROC: break; default: new_dest_context = dest_context; } break; case MSHCTX_LOCAL: switch (dest_context) { case MSHCTX_INPROC: case MSHCTX_CROSSCTX: break; default: new_dest_context = dest_context; } break; case MSHCTX_NOSHAREDMEM: switch (dest_context) { case MSHCTX_DIFFERENTMACHINE: new_dest_context = dest_context; break; default: break; } break; default: break; } if (old_dest_context == new_dest_context) break; old_dest_context = InterlockedCompareExchange((PLONG)&This->dest_context, new_dest_context, old_dest_context); } while (new_dest_context != old_dest_context); if (dest_context_data) InterlockedExchangePointer(&This->dest_context_data, dest_context_data); } static HRESULT proxy_manager_query_local_interface(struct proxy_manager * This, REFIID riid, void ** ppv) { HRESULT hr; struct ifproxy * ifproxy; TRACE("%s\n", debugstr_guid(riid)); if (IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IMultiQI)) { *ppv = (void *)&This->lpVtbl; IUnknown_AddRef((IUnknown *)*ppv); return S_OK; } if (IsEqualIID(riid, &IID_IMarshal)) { *ppv = (void *)&This->lpVtblMarshal; IUnknown_AddRef((IUnknown *)*ppv); return S_OK; } if (IsEqualIID(riid, &IID_IClientSecurity)) { *ppv = (void *)&This->lpVtblCliSec; IUnknown_AddRef((IUnknown *)*ppv); return S_OK; } hr = proxy_manager_find_ifproxy(This, riid, &ifproxy); if (hr == S_OK) { *ppv = ifproxy->iface; IUnknown_AddRef((IUnknown *)*ppv); return S_OK; } *ppv = NULL; return E_NOINTERFACE; } static HRESULT proxy_manager_create_ifproxy( struct proxy_manager * This, const STDOBJREF *stdobjref, REFIID riid, IRpcChannelBuffer * channel, struct ifproxy ** iif_out) { HRESULT hr; IPSFactoryBuffer * psfb; struct ifproxy * ifproxy = HeapAlloc(GetProcessHeap(), 0, sizeof(*ifproxy)); if (!ifproxy) return E_OUTOFMEMORY; list_init(&ifproxy->entry); ifproxy->parent = This; ifproxy->stdobjref = *stdobjref; ifproxy->iid = *riid; ifproxy->refs = 0; ifproxy->proxy = NULL; assert(channel); ifproxy->chan = channel; /* FIXME: we should take the binding strings and construct the channel in this function */ /* the IUnknown interface is special because it does not have a * proxy associated with the ifproxy as we handle IUnknown ourselves */ if (IsEqualIID(riid, &IID_IUnknown)) { ifproxy->iface = (void *)&This->lpVtbl; IMultiQI_AddRef((IMultiQI *)&This->lpVtbl); hr = S_OK; } else { hr = get_facbuf_for_iid(riid, &psfb); if (hr == S_OK) { /* important note: the outer unknown is set to the proxy manager. * This ensures the COM identity rules are not violated, by having a * one-to-one mapping of objects on the proxy side to objects on the * stub side, no matter which interface you view the object through */ hr = IPSFactoryBuffer_CreateProxy(psfb, (IUnknown *)&This->lpVtbl, riid, &ifproxy->proxy, &ifproxy->iface); IPSFactoryBuffer_Release(psfb); if (hr != S_OK) ERR("Could not create proxy for interface %s, error 0x%08x\n", debugstr_guid(riid), hr); } else ERR("Could not get IPSFactoryBuffer for interface %s, error 0x%08x\n", debugstr_guid(riid), hr); if (hr == S_OK) hr = IRpcProxyBuffer_Connect(ifproxy->proxy, ifproxy->chan); } if (hr == S_OK) { EnterCriticalSection(&This->cs); list_add_tail(&This->interfaces, &ifproxy->entry); LeaveCriticalSection(&This->cs); *iif_out = ifproxy; TRACE("ifproxy %p created for IPID %s, interface %s with %lu public refs\n", ifproxy, debugstr_guid(&stdobjref->ipid), debugstr_guid(riid), stdobjref->cPublicRefs); } else ifproxy_destroy(ifproxy); return hr; } static HRESULT proxy_manager_find_ifproxy(struct proxy_manager * This, REFIID riid, struct ifproxy ** ifproxy_found) { HRESULT hr = E_NOINTERFACE; /* assume not found */ struct list * cursor; EnterCriticalSection(&This->cs); LIST_FOR_EACH(cursor, &This->interfaces) { struct ifproxy * ifproxy = LIST_ENTRY(cursor, struct ifproxy, entry); if (IsEqualIID(riid, &ifproxy->iid)) { *ifproxy_found = ifproxy; hr = S_OK; break; } } LeaveCriticalSection(&This->cs); return hr; } static void proxy_manager_disconnect(struct proxy_manager * This) { struct list * cursor; TRACE("oxid = %s, oid = %s\n", wine_dbgstr_longlong(This->oxid), wine_dbgstr_longlong(This->oid)); EnterCriticalSection(&This->cs); /* SORFP_NOLIFTIMEMGMT proxies (for IRemUnknown) shouldn't be * disconnected - it won't do anything anyway, except cause * problems for other objects that depend on this proxy always * working */ if (!(This->sorflags & SORFP_NOLIFETIMEMGMT)) { LIST_FOR_EACH(cursor, &This->interfaces) { struct ifproxy * ifproxy = LIST_ENTRY(cursor, struct ifproxy, entry); ifproxy_disconnect(ifproxy); } } /* apartment is being destroyed so don't keep a pointer around to it */ This->parent = NULL; LeaveCriticalSection(&This->cs); } static HRESULT proxy_manager_get_remunknown(struct proxy_manager * This, IRemUnknown **remunk) { HRESULT hr = S_OK; struct apartment *apt; BOOL called_in_original_apt; /* we don't want to try and unmarshal or use IRemUnknown if we don't want * lifetime management */ if (This->sorflags & SORFP_NOLIFETIMEMGMT) return S_FALSE; apt = COM_CurrentApt(); if (!apt) return CO_E_NOTINITIALIZED; called_in_original_apt = This->parent && (This->parent->oxid == apt->oxid); EnterCriticalSection(&This->cs); /* only return the cached object if called from the original apartment. * in future, we might want to make the IRemUnknown proxy callable from any * apartment to avoid these checks */ if (This->remunk && called_in_original_apt) { /* already created - return existing object */ *remunk = This->remunk; IRemUnknown_AddRef(*remunk); } else if (!This->parent) /* disconnected - we can't create IRemUnknown */ hr = S_FALSE; else { STDOBJREF stdobjref; /* Don't want IRemUnknown lifetime management as this is IRemUnknown! * We also don't care about whether or not the stub is still alive */ stdobjref.flags = SORFP_NOLIFETIMEMGMT | SORF_NOPING; stdobjref.cPublicRefs = 1; /* oxid of destination object */ stdobjref.oxid = This->oxid; /* FIXME: what should be used for the oid? The DCOM draft doesn't say */ stdobjref.oid = (OID)-1; stdobjref.ipid = This->oxid_info.ipidRemUnknown; /* do the unmarshal */ hr = unmarshal_object(&stdobjref, COM_CurrentApt(), This->dest_context, This->dest_context_data, &IID_IRemUnknown, &This->oxid_info, (void**)remunk); if (hr == S_OK && called_in_original_apt) { This->remunk = *remunk; IRemUnknown_AddRef(This->remunk); } } LeaveCriticalSection(&This->cs); TRACE("got IRemUnknown* pointer %p, hr = 0x%08x\n", *remunk, hr); return hr; } /* destroys a proxy manager, freeing the memory it used. * Note: this function should not be called from a list iteration in the * apartment, due to the fact that it removes itself from the apartment and * it could add a proxy to IRemUnknown into the apartment. */ static void proxy_manager_destroy(struct proxy_manager * This) { struct list * cursor; TRACE("oxid = %s, oid = %s\n", wine_dbgstr_longlong(This->oxid), wine_dbgstr_longlong(This->oid)); if (This->parent) { EnterCriticalSection(&This->parent->cs); /* remove ourself from the list of proxy objects in the apartment */ LIST_FOR_EACH(cursor, &This->parent->proxies) { if (cursor == &This->entry) { list_remove(&This->entry); break; } } LeaveCriticalSection(&This->parent->cs); } /* destroy all of the interface proxies */ while ((cursor = list_head(&This->interfaces))) { struct ifproxy * ifproxy = LIST_ENTRY(cursor, struct ifproxy, entry); ifproxy_destroy(ifproxy); } if (This->remunk) IRemUnknown_Release(This->remunk); CoTaskMemFree(This->oxid_info.psa); DEBUG_CLEAR_CRITSEC_NAME(&This->cs); DeleteCriticalSection(&This->cs); CloseHandle(This->remoting_mutex); HeapFree(GetProcessHeap(), 0, This); } /* finds the proxy manager corresponding to a given OXID and OID that has * been unmarshaled in the specified apartment. The caller must release the * reference to the proxy_manager when the object is no longer used. */ static BOOL find_proxy_manager(APARTMENT * apt, OXID oxid, OID oid, struct proxy_manager ** proxy_found) { BOOL found = FALSE; struct list * cursor; EnterCriticalSection(&apt->cs); LIST_FOR_EACH(cursor, &apt->proxies) { struct proxy_manager * proxy = LIST_ENTRY(cursor, struct proxy_manager, entry); if ((oxid == proxy->oxid) && (oid == proxy->oid)) { /* be careful of a race with ClientIdentity_Release, which would * cause us to return a proxy which is in the process of being * destroyed */ if (ClientIdentity_AddRef((IMultiQI *)&proxy->lpVtbl) != 0) { *proxy_found = proxy; found = TRUE; break; } } } LeaveCriticalSection(&apt->cs); return found; } HRESULT apartment_disconnectproxies(struct apartment *apt) { struct list * cursor; LIST_FOR_EACH(cursor, &apt->proxies) { struct proxy_manager * proxy = LIST_ENTRY(cursor, struct proxy_manager, entry); proxy_manager_disconnect(proxy); } return S_OK; } /********************** StdMarshal implementation ****************************/ typedef struct _StdMarshalImpl { const IMarshalVtbl *lpvtbl; LONG ref; IID iid; DWORD dwDestContext; LPVOID pvDestContext; DWORD mshlflags; } StdMarshalImpl; static HRESULT WINAPI StdMarshalImpl_QueryInterface(LPMARSHAL iface, REFIID riid, LPVOID *ppv) { *ppv = NULL; if (IsEqualIID(&IID_IUnknown, riid) || IsEqualIID(&IID_IMarshal, riid)) { *ppv = iface; IUnknown_AddRef(iface); return S_OK; } FIXME("No interface for %s.\n", debugstr_guid(riid)); return E_NOINTERFACE; } static ULONG WINAPI StdMarshalImpl_AddRef(LPMARSHAL iface) { StdMarshalImpl *This = (StdMarshalImpl *)iface; return InterlockedIncrement(&This->ref); } static ULONG WINAPI StdMarshalImpl_Release(LPMARSHAL iface) { StdMarshalImpl *This = (StdMarshalImpl *)iface; ULONG ref = InterlockedDecrement(&This->ref); if (!ref) HeapFree(GetProcessHeap(),0,This); return ref; } static HRESULT WINAPI StdMarshalImpl_GetUnmarshalClass( LPMARSHAL iface, REFIID riid, void* pv, DWORD dwDestContext, void* pvDestContext, DWORD mshlflags, CLSID* pCid) { *pCid = CLSID_DfMarshal; return S_OK; } static HRESULT WINAPI StdMarshalImpl_GetMarshalSizeMax( LPMARSHAL iface, REFIID riid, void* pv, DWORD dwDestContext, void* pvDestContext, DWORD mshlflags, DWORD* pSize) { *pSize = sizeof(STDOBJREF); return S_OK; } static HRESULT WINAPI StdMarshalImpl_MarshalInterface( LPMARSHAL iface, IStream *pStm,REFIID riid, void* pv, DWORD dwDestContext, void* pvDestContext, DWORD mshlflags) { STDOBJREF stdobjref; ULONG res; HRESULT hres; APARTMENT *apt = COM_CurrentApt(); TRACE("(...,%s,...)\n", debugstr_guid(riid)); if (!apt) { ERR("Apartment not initialized\n"); return CO_E_NOTINITIALIZED; } /* make sure this apartment can be reached from other threads / processes */ RPC_StartRemoting(apt); hres = marshal_object(apt, &stdobjref, riid, (IUnknown *)pv, mshlflags); if (hres) { ERR("Failed to create ifstub, hres=0x%x\n", hres); return hres; } hres = IStream_Write(pStm, &stdobjref, sizeof(stdobjref), &res); if (hres) return hres; return S_OK; } /* helper for StdMarshalImpl_UnmarshalInterface - does the unmarshaling with * no questions asked about the rules surrounding same-apartment unmarshals * and table marshaling */ static HRESULT unmarshal_object(const STDOBJREF *stdobjref, APARTMENT *apt, MSHCTX dest_context, void *dest_context_data, REFIID riid, const OXID_INFO *oxid_info, void **object) { struct proxy_manager *proxy_manager = NULL; HRESULT hr = S_OK; assert(apt); TRACE("stdobjref:\n\tflags = %04lx\n\tcPublicRefs = %ld\n\toxid = %s\n\toid = %s\n\tipid = %s\n", stdobjref->flags, stdobjref->cPublicRefs, wine_dbgstr_longlong(stdobjref->oxid), wine_dbgstr_longlong(stdobjref->oid), debugstr_guid(&stdobjref->ipid)); /* create a new proxy manager if one doesn't already exist for the * object */ if (!find_proxy_manager(apt, stdobjref->oxid, stdobjref->oid, &proxy_manager)) { hr = proxy_manager_construct(apt, stdobjref->flags, stdobjref->oxid, stdobjref->oid, oxid_info, &proxy_manager); } else TRACE("proxy manager already created, using\n"); if (hr == S_OK) { struct ifproxy * ifproxy; proxy_manager_set_context(proxy_manager, dest_context, dest_context_data); hr = proxy_manager_find_ifproxy(proxy_manager, riid, &ifproxy); if (hr == E_NOINTERFACE) { IRpcChannelBuffer *chanbuf; hr = RPC_CreateClientChannel(&stdobjref->oxid, &stdobjref->ipid, &proxy_manager->oxid_info, proxy_manager->dest_context, proxy_manager->dest_context_data, &chanbuf); if (hr == S_OK) hr = proxy_manager_create_ifproxy(proxy_manager, stdobjref, riid, chanbuf, &ifproxy); } else IUnknown_AddRef((IUnknown *)ifproxy->iface); if (hr == S_OK) { InterlockedExchangeAdd((LONG *)&ifproxy->refs, stdobjref->cPublicRefs); /* get at least one external reference to the object to keep it alive */ hr = ifproxy_get_public_ref(ifproxy); if (FAILED(hr)) ifproxy_destroy(ifproxy); } if (hr == S_OK) *object = ifproxy->iface; } /* release our reference to the proxy manager - the client/apartment * will hold on to the remaining reference for us */ if (proxy_manager) ClientIdentity_Release((IMultiQI*)&proxy_manager->lpVtbl); return hr; } static HRESULT WINAPI StdMarshalImpl_UnmarshalInterface(LPMARSHAL iface, IStream *pStm, REFIID riid, void **ppv) { StdMarshalImpl *This = (StdMarshalImpl *)iface; struct stub_manager *stubmgr = NULL; STDOBJREF stdobjref; ULONG res; HRESULT hres; APARTMENT *apt = COM_CurrentApt(); APARTMENT *stub_apt; OXID oxid; TRACE("(...,%s,....)\n", debugstr_guid(riid)); /* we need an apartment to unmarshal into */ if (!apt) { ERR("Apartment not initialized\n"); return CO_E_NOTINITIALIZED; } /* read STDOBJREF from wire */ hres = IStream_Read(pStm, &stdobjref, sizeof(stdobjref), &res); if (hres) return STG_E_READFAULT; hres = apartment_getoxid(apt, &oxid); if (hres) return hres; /* check if we're marshalling back to ourselves */ if ((oxid == stdobjref.oxid) && (stubmgr = get_stub_manager(apt, stdobjref.oid))) { TRACE("Unmarshalling object marshalled in same apartment for iid %s, " "returning original object %p\n", debugstr_guid(riid), stubmgr->object); hres = IUnknown_QueryInterface(stubmgr->object, riid, ppv); /* unref the ifstub. FIXME: only do this on success? */ if (!stub_manager_is_table_marshaled(stubmgr, &stdobjref.ipid)) stub_manager_ext_release(stubmgr, stdobjref.cPublicRefs, stdobjref.flags & SORFP_TABLEWEAK, TRUE); stub_manager_int_release(stubmgr); return hres; } /* notify stub manager about unmarshal if process-local object. * note: if the oxid is not found then we and native will quite happily * ignore table marshaling and normal marshaling rules regarding number of * unmarshals, etc, but if you abuse these rules then your proxy could end * up returning RPC_E_DISCONNECTED. */ if ((stub_apt = apartment_findfromoxid(stdobjref.oxid, TRUE))) { if ((stubmgr = get_stub_manager(stub_apt, stdobjref.oid))) { if (!stub_manager_notify_unmarshal(stubmgr, &stdobjref.ipid)) hres = CO_E_OBJNOTCONNECTED; } else { WARN("Couldn't find object for OXID %s, OID %s, assuming disconnected\n", wine_dbgstr_longlong(stdobjref.oxid), wine_dbgstr_longlong(stdobjref.oid)); hres = CO_E_OBJNOTCONNECTED; } } else TRACE("Treating unmarshal from OXID %s as inter-process\n", wine_dbgstr_longlong(stdobjref.oxid)); if (hres == S_OK) hres = unmarshal_object(&stdobjref, apt, This->dwDestContext, This->pvDestContext, riid, stubmgr ? &stubmgr->oxid_info : NULL, ppv); if (stubmgr) stub_manager_int_release(stubmgr); if (stub_apt) apartment_release(stub_apt); if (hres) WARN("Failed with error 0x%08x\n", hres); else TRACE("Successfully created proxy %p\n", *ppv); return hres; } static HRESULT WINAPI StdMarshalImpl_ReleaseMarshalData(LPMARSHAL iface, IStream *pStm) { STDOBJREF stdobjref; ULONG res; HRESULT hres; struct stub_manager *stubmgr; APARTMENT *apt; TRACE("iface=%p, pStm=%p\n", iface, pStm); hres = IStream_Read(pStm, &stdobjref, sizeof(stdobjref), &res); if (hres) return STG_E_READFAULT; TRACE("oxid = %s, oid = %s, ipid = %s\n", wine_dbgstr_longlong(stdobjref.oxid), wine_dbgstr_longlong(stdobjref.oid), wine_dbgstr_guid(&stdobjref.ipid)); if (!(apt = apartment_findfromoxid(stdobjref.oxid, TRUE))) { WARN("Could not map OXID %s to apartment object\n", wine_dbgstr_longlong(stdobjref.oxid)); return RPC_E_INVALID_OBJREF; } if (!(stubmgr = get_stub_manager(apt, stdobjref.oid))) { ERR("could not map object ID to stub manager, oxid=%s, oid=%s\n", wine_dbgstr_longlong(stdobjref.oxid), wine_dbgstr_longlong(stdobjref.oid)); return RPC_E_INVALID_OBJREF; } stub_manager_release_marshal_data(stubmgr, stdobjref.cPublicRefs, &stdobjref.ipid, stdobjref.flags & SORFP_TABLEWEAK); stub_manager_int_release(stubmgr); apartment_release(apt); return S_OK; } static HRESULT WINAPI StdMarshalImpl_DisconnectObject(LPMARSHAL iface, DWORD dwReserved) { FIXME("(), stub!\n"); return S_OK; } static const IMarshalVtbl VT_StdMarshal = { StdMarshalImpl_QueryInterface, StdMarshalImpl_AddRef, StdMarshalImpl_Release, StdMarshalImpl_GetUnmarshalClass, StdMarshalImpl_GetMarshalSizeMax, StdMarshalImpl_MarshalInterface, StdMarshalImpl_UnmarshalInterface, StdMarshalImpl_ReleaseMarshalData, StdMarshalImpl_DisconnectObject }; static HRESULT StdMarshalImpl_Construct(REFIID riid, void** ppvObject) { StdMarshalImpl * pStdMarshal = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(StdMarshalImpl)); if (!pStdMarshal) return E_OUTOFMEMORY; pStdMarshal->lpvtbl = &VT_StdMarshal; pStdMarshal->ref = 0; return IMarshal_QueryInterface((IMarshal*)pStdMarshal, riid, ppvObject); } /*********************************************************************** * CoGetStandardMarshal [OLE32.@] * * Gets or creates a standard marshal object. * * PARAMS * riid [I] Interface identifier of the pUnk object. * pUnk [I] Optional. Object to get the marshal object for. * dwDestContext [I] Destination. Used to enable or disable optimizations. * pvDestContext [I] Reserved. Must be NULL. * mshlflags [I] Flags affecting the marshaling process. * ppMarshal [O] Address where marshal object will be stored. * * RETURNS * Success: S_OK. * Failure: HRESULT code. * * NOTES * * The function retrieves the IMarshal object associated with an object if * that object is currently an active stub, otherwise a new marshal object is * created. */ HRESULT WINAPI CoGetStandardMarshal(REFIID riid, IUnknown *pUnk, DWORD dwDestContext, LPVOID pvDestContext, DWORD mshlflags, LPMARSHAL *ppMarshal) { StdMarshalImpl *dm; if (pUnk == NULL) { FIXME("(%s,NULL,%x,%p,%x,%p), unimplemented yet.\n", debugstr_guid(riid),dwDestContext,pvDestContext,mshlflags,ppMarshal); return E_NOTIMPL; } TRACE("(%s,%p,%x,%p,%x,%p)\n", debugstr_guid(riid),pUnk,dwDestContext,pvDestContext,mshlflags,ppMarshal); *ppMarshal = HeapAlloc(GetProcessHeap(),0,sizeof(StdMarshalImpl)); dm = (StdMarshalImpl*) *ppMarshal; if (!dm) return E_FAIL; dm->lpvtbl = &VT_StdMarshal; dm->ref = 1; dm->iid = *riid; dm->dwDestContext = dwDestContext; dm->pvDestContext = pvDestContext; dm->mshlflags = mshlflags; return S_OK; } /*********************************************************************** * get_marshaler [internal] * * Retrieves an IMarshal interface for an object. */ static HRESULT get_marshaler(REFIID riid, IUnknown *pUnk, DWORD dwDestContext, void *pvDestContext, DWORD mshlFlags, LPMARSHAL *pMarshal) { HRESULT hr; if (!pUnk) return E_POINTER; hr = IUnknown_QueryInterface(pUnk, &IID_IMarshal, (LPVOID*)pMarshal); if (hr) hr = CoGetStandardMarshal(riid, pUnk, dwDestContext, pvDestContext, mshlFlags, pMarshal); return hr; } /*********************************************************************** * get_unmarshaler_from_stream [internal] * * Creates an IMarshal* object according to the data marshaled to the stream. * The function leaves the stream pointer at the start of the data written * to the stream by the IMarshal* object. */ static HRESULT get_unmarshaler_from_stream(IStream *stream, IMarshal **marshal, IID *iid) { HRESULT hr; ULONG res; OBJREF objref; /* read common OBJREF header */ hr = IStream_Read(stream, &objref, FIELD_OFFSET(OBJREF, u_objref), &res); if (hr || (res != FIELD_OFFSET(OBJREF, u_objref))) { ERR("Failed to read common OBJREF header, 0x%08x\n", hr); return STG_E_READFAULT; } /* sanity check on header */ if (objref.signature != OBJREF_SIGNATURE) { ERR("Bad OBJREF signature 0x%08lx\n", objref.signature); return RPC_E_INVALID_OBJREF; } if (iid) *iid = objref.iid; /* FIXME: handler marshaling */ if (objref.flags & OBJREF_STANDARD) { TRACE("Using standard unmarshaling\n"); hr = StdMarshalImpl_Construct(&IID_IMarshal, (LPVOID*)marshal); } else if (objref.flags & OBJREF_CUSTOM) { ULONG custom_header_size = FIELD_OFFSET(OBJREF, u_objref.u_custom.pData) - FIELD_OFFSET(OBJREF, u_objref.u_custom); TRACE("Using custom unmarshaling\n"); /* read constant sized OR_CUSTOM data from stream */ hr = IStream_Read(stream, &objref.u_objref.u_custom, custom_header_size, &res); if (hr || (res != custom_header_size)) { ERR("Failed to read OR_CUSTOM header, 0x%08x\n", hr); return STG_E_READFAULT; } /* now create the marshaler specified in the stream */ hr = CoCreateInstance(&objref.u_objref.u_custom.clsid, NULL, CLSCTX_INPROC_SERVER, &IID_IMarshal, (LPVOID*)marshal); } else { FIXME("Invalid or unimplemented marshaling type specified: %lx\n", objref.flags); return RPC_E_INVALID_OBJREF; } if (hr) ERR("Failed to create marshal, 0x%08x\n", hr); return hr; } /*********************************************************************** * CoGetMarshalSizeMax [OLE32.@] * * Gets the maximum amount of data that will be needed by a marshal. * * PARAMS * pulSize [O] Address where maximum marshal size will be stored. * riid [I] Identifier of the interface to marshal. * pUnk [I] Pointer to the object to marshal. * dwDestContext [I] Destination. Used to enable or disable optimizations. * pvDestContext [I] Reserved. Must be NULL. * mshlFlags [I] Flags that affect the marshaling. See CoMarshalInterface(). * * RETURNS * Success: S_OK. * Failure: HRESULT code. * * SEE ALSO * CoMarshalInterface(). */ HRESULT WINAPI CoGetMarshalSizeMax(ULONG *pulSize, REFIID riid, IUnknown *pUnk, DWORD dwDestContext, void *pvDestContext, DWORD mshlFlags) { HRESULT hr; LPMARSHAL pMarshal; CLSID marshaler_clsid; hr = get_marshaler(riid, pUnk, dwDestContext, pvDestContext, mshlFlags, &pMarshal); if (hr) return hr; hr = IMarshal_GetUnmarshalClass(pMarshal, riid, pUnk, dwDestContext, pvDestContext, mshlFlags, &marshaler_clsid); if (hr) { ERR("IMarshal::GetUnmarshalClass failed, 0x%08x\n", hr); IMarshal_Release(pMarshal); return hr; } hr = IMarshal_GetMarshalSizeMax(pMarshal, riid, pUnk, dwDestContext, pvDestContext, mshlFlags, pulSize); if (IsEqualCLSID(&marshaler_clsid, &CLSID_DfMarshal)) /* add on the size of the common header */ *pulSize += FIELD_OFFSET(OBJREF, u_objref); else /* custom marshaling: add on the size of the whole OBJREF structure * like native does */ *pulSize += sizeof(OBJREF); IMarshal_Release(pMarshal); return hr; } static void dump_MSHLFLAGS(MSHLFLAGS flags) { if (flags & MSHLFLAGS_TABLESTRONG) TRACE(" MSHLFLAGS_TABLESTRONG"); if (flags & MSHLFLAGS_TABLEWEAK) TRACE(" MSHLFLAGS_TABLEWEAK"); if (!(flags & (MSHLFLAGS_TABLESTRONG|MSHLFLAGS_TABLEWEAK))) TRACE(" MSHLFLAGS_NORMAL"); if (flags & MSHLFLAGS_NOPING) TRACE(" MSHLFLAGS_NOPING"); } /*********************************************************************** * CoMarshalInterface [OLE32.@] * * Marshals an interface into a stream so that the object can then be * unmarshaled from another COM apartment and used remotely. * * PARAMS * pStream [I] Stream the object will be marshaled into. * riid [I] Identifier of the interface to marshal. * pUnk [I] Pointer to the object to marshal. * dwDestContext [I] Destination. Used to enable or disable optimizations. * pvDestContext [I] Reserved. Must be NULL. * mshlFlags [I] Flags that affect the marshaling. See notes. * * RETURNS * Success: S_OK. * Failure: HRESULT code. * * NOTES * * The mshlFlags parameter can take one or more of the following flags: *| MSHLFLAGS_NORMAL - Unmarshal once, releases stub on last proxy release. *| MSHLFLAGS_TABLESTRONG - Unmarshal many, release when CoReleaseMarshalData() called. *| MSHLFLAGS_TABLEWEAK - Unmarshal many, releases stub on last proxy release. *| MSHLFLAGS_NOPING - No automatic garbage collection (and so reduces network traffic). * * If a marshaled object is not unmarshaled, then CoReleaseMarshalData() must * be called in order to release the resources used in the marshaling. * * SEE ALSO * CoUnmarshalInterface(), CoReleaseMarshalData(). */ HRESULT WINAPI CoMarshalInterface(IStream *pStream, REFIID riid, IUnknown *pUnk, DWORD dwDestContext, void *pvDestContext, DWORD mshlFlags) { HRESULT hr; CLSID marshaler_clsid; OBJREF objref; LPMARSHAL pMarshal; TRACE("(%p, %s, %p, %x, %p,", pStream, debugstr_guid(riid), pUnk, dwDestContext, pvDestContext); dump_MSHLFLAGS(mshlFlags); TRACE(")\n"); if (!pUnk || !pStream) return E_INVALIDARG; objref.signature = OBJREF_SIGNATURE; objref.iid = *riid; /* get the marshaler for the specified interface */ hr = get_marshaler(riid, pUnk, dwDestContext, pvDestContext, mshlFlags, &pMarshal); if (hr) { ERR("Failed to get marshaller, 0x%08x\n", hr); return hr; } hr = IMarshal_GetUnmarshalClass(pMarshal, riid, pUnk, dwDestContext, pvDestContext, mshlFlags, &marshaler_clsid); if (hr) { ERR("IMarshal::GetUnmarshalClass failed, 0x%08x\n", hr); goto cleanup; } /* FIXME: implement handler marshaling too */ if (IsEqualCLSID(&marshaler_clsid, &CLSID_DfMarshal)) { TRACE("Using standard marshaling\n"); objref.flags = OBJREF_STANDARD; /* write the common OBJREF header to the stream */ hr = IStream_Write(pStream, &objref, FIELD_OFFSET(OBJREF, u_objref), NULL); if (hr) { ERR("Failed to write OBJREF header to stream, 0x%08x\n", hr); goto cleanup; } } else { TRACE("Using custom marshaling\n"); objref.flags = OBJREF_CUSTOM; objref.u_objref.u_custom.clsid = marshaler_clsid; objref.u_objref.u_custom.cbExtension = 0; objref.u_objref.u_custom.size = 0; hr = IMarshal_GetMarshalSizeMax(pMarshal, riid, pUnk, dwDestContext, pvDestContext, mshlFlags, &objref.u_objref.u_custom.size); if (hr) { ERR("Failed to get max size of marshal data, error 0x%08x\n", hr); goto cleanup; } /* write constant sized common header and OR_CUSTOM data into stream */ hr = IStream_Write(pStream, &objref, FIELD_OFFSET(OBJREF, u_objref.u_custom.pData), NULL); if (hr) { ERR("Failed to write OR_CUSTOM header to stream with 0x%08x\n", hr); goto cleanup; } } TRACE("Calling IMarshal::MarshalInterace\n"); /* call helper object to do the actual marshaling */ hr = IMarshal_MarshalInterface(pMarshal, pStream, riid, pUnk, dwDestContext, pvDestContext, mshlFlags); if (hr) { ERR("Failed to marshal the interface %s, %x\n", debugstr_guid(riid), hr); goto cleanup; } cleanup: IMarshal_Release(pMarshal); TRACE("completed with hr 0x%08x\n", hr); return hr; } /*********************************************************************** * CoUnmarshalInterface [OLE32.@] * * Unmarshals an object from a stream by creating a proxy to the remote * object, if necessary. * * PARAMS * * pStream [I] Stream containing the marshaled object. * riid [I] Interface identifier of the object to create a proxy to. * ppv [O] Address where proxy will be stored. * * RETURNS * * Success: S_OK. * Failure: HRESULT code. * * SEE ALSO * CoMarshalInterface(). */ HRESULT WINAPI CoUnmarshalInterface(IStream *pStream, REFIID riid, LPVOID *ppv) { HRESULT hr; LPMARSHAL pMarshal; IID iid; IUnknown *object; TRACE("(%p, %s, %p)\n", pStream, debugstr_guid(riid), ppv); if (!pStream || !ppv) return E_INVALIDARG; hr = get_unmarshaler_from_stream(pStream, &pMarshal, &iid); if (hr != S_OK) return hr; /* call the helper object to do the actual unmarshaling */ hr = IMarshal_UnmarshalInterface(pMarshal, pStream, &iid, (LPVOID*)&object); if (hr) ERR("IMarshal::UnmarshalInterface failed, 0x%08x\n", hr); if (hr == S_OK) { /* IID_NULL means use the interface ID of the marshaled object */ if (!IsEqualIID(riid, &IID_NULL) && !IsEqualIID(riid, &iid)) { TRACE("requested interface != marshalled interface, additional QI needed\n"); hr = IUnknown_QueryInterface(object, riid, ppv); if (hr) ERR("Couldn't query for interface %s, hr = 0x%08x\n", debugstr_guid(riid), hr); IUnknown_Release(object); } else { *ppv = object; } } IMarshal_Release(pMarshal); TRACE("completed with hr 0x%x\n", hr); return hr; } /*********************************************************************** * CoReleaseMarshalData [OLE32.@] * * Releases resources associated with an object that has been marshaled into * a stream. * * PARAMS * * pStream [I] The stream that the object has been marshaled into. * * RETURNS * Success: S_OK. * Failure: HRESULT error code. * * NOTES * * Call this function to release resources associated with a normal or * table-weak marshal that will not be unmarshaled, and all table-strong * marshals when they are no longer needed. * * SEE ALSO * CoMarshalInterface(), CoUnmarshalInterface(). */ HRESULT WINAPI CoReleaseMarshalData(IStream *pStream) { HRESULT hr; LPMARSHAL pMarshal; TRACE("(%p)\n", pStream); hr = get_unmarshaler_from_stream(pStream, &pMarshal, NULL); if (hr != S_OK) return hr; /* call the helper object to do the releasing of marshal data */ hr = IMarshal_ReleaseMarshalData(pMarshal, pStream); if (hr) ERR("IMarshal::ReleaseMarshalData failed with error 0x%08x\n", hr); IMarshal_Release(pMarshal); return hr; } /*********************************************************************** * CoMarshalInterThreadInterfaceInStream [OLE32.@] * * Marshal an interface across threads in the same process. * * PARAMS * riid [I] Identifier of the interface to be marshalled. * pUnk [I] Pointer to IUnknown-derived interface that will be marshalled. * ppStm [O] Pointer to IStream object that is created and then used to store the marshalled interface. * * RETURNS * Success: S_OK * Failure: E_OUTOFMEMORY and other COM error codes * * SEE ALSO * CoMarshalInterface(), CoUnmarshalInterface() and CoGetInterfaceAndReleaseStream() */ HRESULT WINAPI CoMarshalInterThreadInterfaceInStream( REFIID riid, LPUNKNOWN pUnk, LPSTREAM * ppStm) { ULARGE_INTEGER xpos; LARGE_INTEGER seekto; HRESULT hres; TRACE("(%s, %p, %p)\n",debugstr_guid(riid), pUnk, ppStm); hres = CreateStreamOnHGlobal(NULL, TRUE, ppStm); if (FAILED(hres)) return hres; hres = CoMarshalInterface(*ppStm, riid, pUnk, MSHCTX_INPROC, NULL, MSHLFLAGS_NORMAL); if (SUCCEEDED(hres)) { memset(&seekto, 0, sizeof(seekto)); IStream_Seek(*ppStm, seekto, STREAM_SEEK_SET, &xpos); } else { IStream_Release(*ppStm); *ppStm = NULL; } return hres; } /*********************************************************************** * CoGetInterfaceAndReleaseStream [OLE32.@] * * Unmarshalls an interface from a stream and then releases the stream. * * PARAMS * pStm [I] Stream that contains the marshalled interface. * riid [I] Interface identifier of the object to unmarshall. * ppv [O] Address of pointer where the requested interface object will be stored. * * RETURNS * Success: S_OK * Failure: A COM error code * * SEE ALSO * CoMarshalInterThreadInterfaceInStream() and CoUnmarshalInterface() */ HRESULT WINAPI CoGetInterfaceAndReleaseStream(LPSTREAM pStm, REFIID riid, LPVOID *ppv) { HRESULT hres; TRACE("(%p, %s, %p)\n", pStm, debugstr_guid(riid), ppv); if(!pStm) return E_INVALIDARG; hres = CoUnmarshalInterface(pStm, riid, ppv); IStream_Release(pStm); return hres; } static HRESULT WINAPI StdMarshalCF_QueryInterface(LPCLASSFACTORY iface, REFIID riid, LPVOID *ppv) { *ppv = NULL; if (IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IClassFactory)) { *ppv = (LPVOID)iface; return S_OK; } return E_NOINTERFACE; } static ULONG WINAPI StdMarshalCF_AddRef(LPCLASSFACTORY iface) { return 2; /* non-heap based object */ } static ULONG WINAPI StdMarshalCF_Release(LPCLASSFACTORY iface) { return 1; /* non-heap based object */ } static HRESULT WINAPI StdMarshalCF_CreateInstance(LPCLASSFACTORY iface, LPUNKNOWN pUnk, REFIID riid, LPVOID *ppv) { if (IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IMarshal)) return StdMarshalImpl_Construct(riid, ppv); FIXME("(%s), not supported.\n",debugstr_guid(riid)); return E_NOINTERFACE; } static HRESULT WINAPI StdMarshalCF_LockServer(LPCLASSFACTORY iface, BOOL fLock) { FIXME("(%d), stub!\n",fLock); return S_OK; } static const IClassFactoryVtbl StdMarshalCFVtbl = { StdMarshalCF_QueryInterface, StdMarshalCF_AddRef, StdMarshalCF_Release, StdMarshalCF_CreateInstance, StdMarshalCF_LockServer }; static const IClassFactoryVtbl *StdMarshalCF = &StdMarshalCFVtbl; HRESULT MARSHAL_GetStandardMarshalCF(LPVOID *ppv) { *ppv = &StdMarshalCF; return S_OK; } /*********************************************************************** * CoMarshalHresult [OLE32.@] * * Marshals an HRESULT value into a stream. * * PARAMS * pStm [I] Stream that hresult will be marshalled into. * hresult [I] HRESULT to be marshalled. * * RETURNS * Success: S_OK * Failure: A COM error code * * SEE ALSO * CoUnmarshalHresult(). */ HRESULT WINAPI CoMarshalHresult(LPSTREAM pStm, HRESULT hresult) { return IStream_Write(pStm, &hresult, sizeof(hresult), NULL); } /*********************************************************************** * CoUnmarshalHresult [OLE32.@] * * Unmarshals an HRESULT value from a stream. * * PARAMS * pStm [I] Stream that hresult will be unmarshalled from. * phresult [I] Pointer to HRESULT where the value will be unmarshalled to. * * RETURNS * Success: S_OK * Failure: A COM error code * * SEE ALSO * CoMarshalHresult(). */ HRESULT WINAPI CoUnmarshalHresult(LPSTREAM pStm, HRESULT * phresult) { return IStream_Read(pStm, phresult, sizeof(*phresult), NULL); }