/* * RPC Manager * * Copyright 2001 Ove Kåven, TransGaming Technologies * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA */ #include "config.h" #include "wine/port.h" #include #include #define COBJMACROS #define NONAMELESSUNION #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 "servprov.h" #include "wine/unicode.h" #include "compobj_private.h" #include "wine/debug.h" WINE_DEFAULT_DEBUG_CHANNEL(ole); static void __RPC_STUB dispatch_rpc(RPC_MESSAGE *msg); /* we only use one function to dispatch calls for all methods - we use the * RPC_IF_OLE flag to tell the RPC runtime that this is the case */ static RPC_DISPATCH_FUNCTION rpc_dispatch_table[1] = { dispatch_rpc }; /* (RO) */ static RPC_DISPATCH_TABLE rpc_dispatch = { 1, rpc_dispatch_table }; /* (RO) */ static struct list registered_interfaces = LIST_INIT(registered_interfaces); /* (CS csRegIf) */ static CRITICAL_SECTION csRegIf; static CRITICAL_SECTION_DEBUG csRegIf_debug = { 0, 0, &csRegIf, { &csRegIf_debug.ProcessLocksList, &csRegIf_debug.ProcessLocksList }, 0, 0, { (DWORD_PTR)(__FILE__ ": dcom registered server interfaces") } }; static CRITICAL_SECTION csRegIf = { &csRegIf_debug, -1, 0, 0, 0, 0 }; static struct list channel_hooks = LIST_INIT(channel_hooks); /* (CS csChannelHook) */ static CRITICAL_SECTION csChannelHook; static CRITICAL_SECTION_DEBUG csChannelHook_debug = { 0, 0, &csChannelHook, { &csChannelHook_debug.ProcessLocksList, &csChannelHook_debug.ProcessLocksList }, 0, 0, { (DWORD_PTR)(__FILE__ ": channel hooks") } }; static CRITICAL_SECTION csChannelHook = { &csChannelHook_debug, -1, 0, 0, 0, 0 }; static WCHAR wszRpcTransport[] = {'n','c','a','l','r','p','c',0}; struct registered_if { struct list entry; DWORD refs; /* ref count */ RPC_SERVER_INTERFACE If; /* interface registered with the RPC runtime */ }; /* get the pipe endpoint specified of the specified apartment */ static inline void get_rpc_endpoint(LPWSTR endpoint, const OXID *oxid) { /* FIXME: should get endpoint from rpcss */ static const WCHAR wszEndpointFormat[] = {'\\','p','i','p','e','\\','O','L','E','_','%','0','8','l','x','%','0','8','l','x',0}; wsprintfW(endpoint, wszEndpointFormat, (DWORD)(*oxid >> 32),(DWORD)*oxid); } typedef struct { IRpcChannelBuffer IRpcChannelBuffer_iface; LONG refs; DWORD dest_context; /* returned from GetDestCtx */ void *dest_context_data; /* returned from GetDestCtx */ } RpcChannelBuffer; typedef struct { RpcChannelBuffer super; /* superclass */ RPC_BINDING_HANDLE bind; /* handle to the remote server */ OXID oxid; /* apartment in which the channel is valid */ DWORD server_pid; /* id of server process */ HANDLE event; /* cached event handle */ IID iid; /* IID of the proxy this belongs to */ } ClientRpcChannelBuffer; struct dispatch_params { RPCOLEMESSAGE *msg; /* message */ IRpcStubBuffer *stub; /* stub buffer, if applicable */ IRpcChannelBuffer *chan; /* server channel buffer, if applicable */ IID iid; /* ID of interface being called */ IUnknown *iface; /* interface being called */ HANDLE handle; /* handle that will become signaled when call finishes */ BOOL bypass_rpcrt; /* bypass RPC runtime? */ RPC_STATUS status; /* status (out) */ HRESULT hr; /* hresult (out) */ }; struct message_state { RPC_BINDING_HANDLE binding_handle; ULONG prefix_data_len; SChannelHookCallInfo channel_hook_info; BOOL bypass_rpcrt; /* client only */ HWND target_hwnd; DWORD target_tid; struct dispatch_params params; }; typedef struct { ULONG conformance; /* NDR */ GUID id; ULONG size; /* [size_is((size+7)&~7)] */ unsigned char data[1]; } WIRE_ORPC_EXTENT; typedef struct { ULONG size; ULONG reserved; unsigned char extent[1]; } WIRE_ORPC_EXTENT_ARRAY; typedef struct { ULONG version; ULONG flags; ULONG reserved1; GUID cid; unsigned char extensions[1]; } WIRE_ORPCTHIS; typedef struct { ULONG flags; unsigned char extensions[1]; } WIRE_ORPCTHAT; struct channel_hook_entry { struct list entry; GUID id; IChannelHook *hook; }; struct channel_hook_buffer_data { GUID id; ULONG extension_size; }; static HRESULT unmarshal_ORPCTHAT(RPC_MESSAGE *msg, ORPCTHAT *orpcthat, ORPC_EXTENT_ARRAY *orpc_ext_array, WIRE_ORPC_EXTENT **first_wire_orpc_extent); /* Channel Hook Functions */ static ULONG ChannelHooks_ClientGetSize(SChannelHookCallInfo *info, struct channel_hook_buffer_data **data, unsigned int *hook_count, ULONG *extension_count) { struct channel_hook_entry *entry; ULONG total_size = 0; unsigned int hook_index = 0; *hook_count = 0; *extension_count = 0; EnterCriticalSection(&csChannelHook); LIST_FOR_EACH_ENTRY(entry, &channel_hooks, struct channel_hook_entry, entry) (*hook_count)++; if (*hook_count) *data = HeapAlloc(GetProcessHeap(), 0, *hook_count * sizeof(struct channel_hook_buffer_data)); else *data = NULL; LIST_FOR_EACH_ENTRY(entry, &channel_hooks, struct channel_hook_entry, entry) { ULONG extension_size = 0; IChannelHook_ClientGetSize(entry->hook, &entry->id, &info->iid, &extension_size); TRACE("%s: extension_size = %u\n", debugstr_guid(&entry->id), extension_size); extension_size = (extension_size+7)&~7; (*data)[hook_index].id = entry->id; (*data)[hook_index].extension_size = extension_size; /* an extension is only put onto the wire if it has data to write */ if (extension_size) { total_size += FIELD_OFFSET(WIRE_ORPC_EXTENT, data[extension_size]); (*extension_count)++; } hook_index++; } LeaveCriticalSection(&csChannelHook); return total_size; } static unsigned char * ChannelHooks_ClientFillBuffer(SChannelHookCallInfo *info, unsigned char *buffer, struct channel_hook_buffer_data *data, unsigned int hook_count) { struct channel_hook_entry *entry; EnterCriticalSection(&csChannelHook); LIST_FOR_EACH_ENTRY(entry, &channel_hooks, struct channel_hook_entry, entry) { unsigned int i; ULONG extension_size = 0; WIRE_ORPC_EXTENT *wire_orpc_extent = (WIRE_ORPC_EXTENT *)buffer; for (i = 0; i < hook_count; i++) if (IsEqualGUID(&entry->id, &data[i].id)) extension_size = data[i].extension_size; /* an extension is only put onto the wire if it has data to write */ if (!extension_size) continue; IChannelHook_ClientFillBuffer(entry->hook, &entry->id, &info->iid, &extension_size, buffer + FIELD_OFFSET(WIRE_ORPC_EXTENT, data[0])); TRACE("%s: extension_size = %u\n", debugstr_guid(&entry->id), extension_size); /* FIXME: set unused portion of wire_orpc_extent->data to 0? */ wire_orpc_extent->conformance = (extension_size+7)&~7; wire_orpc_extent->size = extension_size; wire_orpc_extent->id = entry->id; buffer += FIELD_OFFSET(WIRE_ORPC_EXTENT, data[wire_orpc_extent->conformance]); } LeaveCriticalSection(&csChannelHook); return buffer; } static void ChannelHooks_ServerNotify(SChannelHookCallInfo *info, DWORD lDataRep, WIRE_ORPC_EXTENT *first_wire_orpc_extent, ULONG extension_count) { struct channel_hook_entry *entry; ULONG i; EnterCriticalSection(&csChannelHook); LIST_FOR_EACH_ENTRY(entry, &channel_hooks, struct channel_hook_entry, entry) { WIRE_ORPC_EXTENT *wire_orpc_extent; for (i = 0, wire_orpc_extent = first_wire_orpc_extent; i < extension_count; i++, wire_orpc_extent = (WIRE_ORPC_EXTENT *)&wire_orpc_extent->data[wire_orpc_extent->conformance]) { if (IsEqualGUID(&entry->id, &wire_orpc_extent->id)) break; } if (i == extension_count) wire_orpc_extent = NULL; IChannelHook_ServerNotify(entry->hook, &entry->id, &info->iid, wire_orpc_extent ? wire_orpc_extent->size : 0, wire_orpc_extent ? wire_orpc_extent->data : NULL, lDataRep); } LeaveCriticalSection(&csChannelHook); } static ULONG ChannelHooks_ServerGetSize(SChannelHookCallInfo *info, struct channel_hook_buffer_data **data, unsigned int *hook_count, ULONG *extension_count) { struct channel_hook_entry *entry; ULONG total_size = 0; unsigned int hook_index = 0; *hook_count = 0; *extension_count = 0; EnterCriticalSection(&csChannelHook); LIST_FOR_EACH_ENTRY(entry, &channel_hooks, struct channel_hook_entry, entry) (*hook_count)++; if (*hook_count) *data = HeapAlloc(GetProcessHeap(), 0, *hook_count * sizeof(struct channel_hook_buffer_data)); else *data = NULL; LIST_FOR_EACH_ENTRY(entry, &channel_hooks, struct channel_hook_entry, entry) { ULONG extension_size = 0; IChannelHook_ServerGetSize(entry->hook, &entry->id, &info->iid, S_OK, &extension_size); TRACE("%s: extension_size = %u\n", debugstr_guid(&entry->id), extension_size); extension_size = (extension_size+7)&~7; (*data)[hook_index].id = entry->id; (*data)[hook_index].extension_size = extension_size; /* an extension is only put onto the wire if it has data to write */ if (extension_size) { total_size += FIELD_OFFSET(WIRE_ORPC_EXTENT, data[extension_size]); (*extension_count)++; } hook_index++; } LeaveCriticalSection(&csChannelHook); return total_size; } static unsigned char * ChannelHooks_ServerFillBuffer(SChannelHookCallInfo *info, unsigned char *buffer, struct channel_hook_buffer_data *data, unsigned int hook_count) { struct channel_hook_entry *entry; EnterCriticalSection(&csChannelHook); LIST_FOR_EACH_ENTRY(entry, &channel_hooks, struct channel_hook_entry, entry) { unsigned int i; ULONG extension_size = 0; WIRE_ORPC_EXTENT *wire_orpc_extent = (WIRE_ORPC_EXTENT *)buffer; for (i = 0; i < hook_count; i++) if (IsEqualGUID(&entry->id, &data[i].id)) extension_size = data[i].extension_size; /* an extension is only put onto the wire if it has data to write */ if (!extension_size) continue; IChannelHook_ServerFillBuffer(entry->hook, &entry->id, &info->iid, &extension_size, buffer + FIELD_OFFSET(WIRE_ORPC_EXTENT, data[0]), S_OK); TRACE("%s: extension_size = %u\n", debugstr_guid(&entry->id), extension_size); /* FIXME: set unused portion of wire_orpc_extent->data to 0? */ wire_orpc_extent->conformance = (extension_size+7)&~7; wire_orpc_extent->size = extension_size; wire_orpc_extent->id = entry->id; buffer += FIELD_OFFSET(WIRE_ORPC_EXTENT, data[wire_orpc_extent->conformance]); } LeaveCriticalSection(&csChannelHook); return buffer; } static void ChannelHooks_ClientNotify(SChannelHookCallInfo *info, DWORD lDataRep, WIRE_ORPC_EXTENT *first_wire_orpc_extent, ULONG extension_count, HRESULT hrFault) { struct channel_hook_entry *entry; ULONG i; EnterCriticalSection(&csChannelHook); LIST_FOR_EACH_ENTRY(entry, &channel_hooks, struct channel_hook_entry, entry) { WIRE_ORPC_EXTENT *wire_orpc_extent; for (i = 0, wire_orpc_extent = first_wire_orpc_extent; i < extension_count; i++, wire_orpc_extent = (WIRE_ORPC_EXTENT *)&wire_orpc_extent->data[wire_orpc_extent->conformance]) { if (IsEqualGUID(&entry->id, &wire_orpc_extent->id)) break; } if (i == extension_count) wire_orpc_extent = NULL; IChannelHook_ClientNotify(entry->hook, &entry->id, &info->iid, wire_orpc_extent ? wire_orpc_extent->size : 0, wire_orpc_extent ? wire_orpc_extent->data : NULL, lDataRep, hrFault); } LeaveCriticalSection(&csChannelHook); } HRESULT RPC_RegisterChannelHook(REFGUID rguid, IChannelHook *hook) { struct channel_hook_entry *entry; TRACE("(%s, %p)\n", debugstr_guid(rguid), hook); entry = HeapAlloc(GetProcessHeap(), 0, sizeof(*entry)); if (!entry) return E_OUTOFMEMORY; entry->id = *rguid; entry->hook = hook; IChannelHook_AddRef(hook); EnterCriticalSection(&csChannelHook); list_add_tail(&channel_hooks, &entry->entry); LeaveCriticalSection(&csChannelHook); return S_OK; } void RPC_UnregisterAllChannelHooks(void) { struct channel_hook_entry *cursor; struct channel_hook_entry *cursor2; EnterCriticalSection(&csChannelHook); LIST_FOR_EACH_ENTRY_SAFE(cursor, cursor2, &channel_hooks, struct channel_hook_entry, entry) HeapFree(GetProcessHeap(), 0, cursor); LeaveCriticalSection(&csChannelHook); DeleteCriticalSection(&csChannelHook); DeleteCriticalSection(&csRegIf); } /* RPC Channel Buffer Functions */ static HRESULT WINAPI RpcChannelBuffer_QueryInterface(IRpcChannelBuffer *iface, REFIID riid, LPVOID *ppv) { *ppv = NULL; if (IsEqualIID(riid,&IID_IRpcChannelBuffer) || IsEqualIID(riid,&IID_IUnknown)) { *ppv = iface; IRpcChannelBuffer_AddRef(iface); return S_OK; } return E_NOINTERFACE; } static ULONG WINAPI RpcChannelBuffer_AddRef(LPRPCCHANNELBUFFER iface) { RpcChannelBuffer *This = (RpcChannelBuffer *)iface; return InterlockedIncrement(&This->refs); } static ULONG WINAPI ServerRpcChannelBuffer_Release(LPRPCCHANNELBUFFER iface) { RpcChannelBuffer *This = (RpcChannelBuffer *)iface; ULONG ref; ref = InterlockedDecrement(&This->refs); if (ref) return ref; HeapFree(GetProcessHeap(), 0, This); return 0; } static ULONG WINAPI ClientRpcChannelBuffer_Release(LPRPCCHANNELBUFFER iface) { ClientRpcChannelBuffer *This = (ClientRpcChannelBuffer *)iface; ULONG ref; ref = InterlockedDecrement(&This->super.refs); if (ref) return ref; if (This->event) CloseHandle(This->event); RpcBindingFree(&This->bind); HeapFree(GetProcessHeap(), 0, This); return 0; } static HRESULT WINAPI ServerRpcChannelBuffer_GetBuffer(LPRPCCHANNELBUFFER iface, RPCOLEMESSAGE* olemsg, REFIID riid) { RpcChannelBuffer *This = (RpcChannelBuffer *)iface; RPC_MESSAGE *msg = (RPC_MESSAGE *)olemsg; RPC_STATUS status; ORPCTHAT *orpcthat; struct message_state *message_state; ULONG extensions_size; struct channel_hook_buffer_data *channel_hook_data; unsigned int channel_hook_count; ULONG extension_count; TRACE("(%p)->(%p,%s)\n", This, olemsg, debugstr_guid(riid)); message_state = msg->Handle; /* restore the binding handle and the real start of data */ msg->Handle = message_state->binding_handle; msg->Buffer = (char *)msg->Buffer - message_state->prefix_data_len; extensions_size = ChannelHooks_ServerGetSize(&message_state->channel_hook_info, &channel_hook_data, &channel_hook_count, &extension_count); msg->BufferLength += FIELD_OFFSET(WIRE_ORPCTHAT, extensions) + sizeof(DWORD); if (extensions_size) { msg->BufferLength += FIELD_OFFSET(WIRE_ORPC_EXTENT_ARRAY, extent[2*sizeof(DWORD) + extensions_size]); if (extension_count & 1) msg->BufferLength += FIELD_OFFSET(WIRE_ORPC_EXTENT, data[0]); } if (message_state->bypass_rpcrt) { msg->Buffer = HeapAlloc(GetProcessHeap(), 0, msg->BufferLength); if (msg->Buffer) status = RPC_S_OK; else { HeapFree(GetProcessHeap(), 0, channel_hook_data); return E_OUTOFMEMORY; } } else status = I_RpcGetBuffer(msg); orpcthat = msg->Buffer; msg->Buffer = (char *)msg->Buffer + FIELD_OFFSET(WIRE_ORPCTHAT, extensions); orpcthat->flags = ORPCF_NULL /* FIXME? */; /* NDR representation of orpcthat->extensions */ *(DWORD *)msg->Buffer = extensions_size ? 1 : 0; msg->Buffer = (char *)msg->Buffer + sizeof(DWORD); if (extensions_size) { WIRE_ORPC_EXTENT_ARRAY *orpc_extent_array = msg->Buffer; orpc_extent_array->size = extension_count; orpc_extent_array->reserved = 0; msg->Buffer = (char *)msg->Buffer + FIELD_OFFSET(WIRE_ORPC_EXTENT_ARRAY, extent); /* NDR representation of orpc_extent_array->extent */ *(DWORD *)msg->Buffer = 1; msg->Buffer = (char *)msg->Buffer + sizeof(DWORD); /* NDR representation of [size_is] attribute of orpc_extent_array->extent */ *(DWORD *)msg->Buffer = (extension_count + 1) & ~1; msg->Buffer = (char *)msg->Buffer + sizeof(DWORD); msg->Buffer = ChannelHooks_ServerFillBuffer(&message_state->channel_hook_info, msg->Buffer, channel_hook_data, channel_hook_count); /* we must add a dummy extension if there is an odd extension * count to meet the contract specified by the size_is attribute */ if (extension_count & 1) { WIRE_ORPC_EXTENT *wire_orpc_extent = msg->Buffer; wire_orpc_extent->conformance = 0; wire_orpc_extent->id = GUID_NULL; wire_orpc_extent->size = 0; msg->Buffer = (char *)msg->Buffer + FIELD_OFFSET(WIRE_ORPC_EXTENT, data[0]); } } HeapFree(GetProcessHeap(), 0, channel_hook_data); /* store the prefixed data length so that we can restore the real buffer * later */ message_state->prefix_data_len = (char *)msg->Buffer - (char *)orpcthat; msg->BufferLength -= message_state->prefix_data_len; /* save away the message state again */ msg->Handle = message_state; TRACE("-- %d\n", status); return HRESULT_FROM_WIN32(status); } static HANDLE ClientRpcChannelBuffer_GetEventHandle(ClientRpcChannelBuffer *This) { HANDLE event = InterlockedExchangePointer(&This->event, NULL); /* Note: must be auto-reset event so we can reuse it without a call * to ResetEvent */ if (!event) event = CreateEventW(NULL, FALSE, FALSE, NULL); return event; } static void ClientRpcChannelBuffer_ReleaseEventHandle(ClientRpcChannelBuffer *This, HANDLE event) { if (InterlockedCompareExchangePointer(&This->event, event, NULL)) /* already a handle cached in This */ CloseHandle(event); } static HRESULT WINAPI ClientRpcChannelBuffer_GetBuffer(LPRPCCHANNELBUFFER iface, RPCOLEMESSAGE* olemsg, REFIID riid) { ClientRpcChannelBuffer *This = (ClientRpcChannelBuffer *)iface; RPC_MESSAGE *msg = (RPC_MESSAGE *)olemsg; RPC_CLIENT_INTERFACE *cif; RPC_STATUS status; ORPCTHIS *orpcthis; struct message_state *message_state; ULONG extensions_size; struct channel_hook_buffer_data *channel_hook_data; unsigned int channel_hook_count; ULONG extension_count; IPID ipid; HRESULT hr; APARTMENT *apt = NULL; TRACE("(%p)->(%p,%s)\n", This, olemsg, debugstr_guid(riid)); cif = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(RPC_CLIENT_INTERFACE)); if (!cif) return E_OUTOFMEMORY; message_state = HeapAlloc(GetProcessHeap(), 0, sizeof(*message_state)); if (!message_state) { HeapFree(GetProcessHeap(), 0, cif); return E_OUTOFMEMORY; } cif->Length = sizeof(RPC_CLIENT_INTERFACE); /* RPC interface ID = COM interface ID */ cif->InterfaceId.SyntaxGUID = This->iid; /* COM objects always have a version of 0.0 */ cif->InterfaceId.SyntaxVersion.MajorVersion = 0; cif->InterfaceId.SyntaxVersion.MinorVersion = 0; msg->Handle = This->bind; msg->RpcInterfaceInformation = cif; message_state->prefix_data_len = 0; message_state->binding_handle = This->bind; message_state->channel_hook_info.iid = *riid; message_state->channel_hook_info.cbSize = sizeof(message_state->channel_hook_info); message_state->channel_hook_info.uCausality = COM_CurrentCausalityId(); message_state->channel_hook_info.dwServerPid = This->server_pid; message_state->channel_hook_info.iMethod = msg->ProcNum & ~RPC_FLAGS_VALID_BIT; message_state->channel_hook_info.pObject = NULL; /* only present on server-side */ message_state->target_hwnd = NULL; message_state->target_tid = 0; memset(&message_state->params, 0, sizeof(message_state->params)); extensions_size = ChannelHooks_ClientGetSize(&message_state->channel_hook_info, &channel_hook_data, &channel_hook_count, &extension_count); msg->BufferLength += FIELD_OFFSET(WIRE_ORPCTHIS, extensions) + sizeof(DWORD); if (extensions_size) { msg->BufferLength += FIELD_OFFSET(WIRE_ORPC_EXTENT_ARRAY, extent[2*sizeof(DWORD) + extensions_size]); if (extension_count & 1) msg->BufferLength += FIELD_OFFSET(WIRE_ORPC_EXTENT, data[0]); } RpcBindingInqObject(message_state->binding_handle, &ipid); hr = ipid_get_dispatch_params(&ipid, &apt, NULL, &message_state->params.stub, &message_state->params.chan, &message_state->params.iid, &message_state->params.iface); if (hr == S_OK) { /* stub, chan, iface and iid are unneeded in multi-threaded case as we go * via the RPC runtime */ if (apt->multi_threaded) { IRpcStubBuffer_Release(message_state->params.stub); message_state->params.stub = NULL; IRpcChannelBuffer_Release(message_state->params.chan); message_state->params.chan = NULL; message_state->params.iface = NULL; } else { message_state->params.bypass_rpcrt = TRUE; message_state->target_hwnd = apartment_getwindow(apt); message_state->target_tid = apt->tid; /* we assume later on that this being non-NULL is the indicator that * means call directly instead of going through RPC runtime */ if (!message_state->target_hwnd) ERR("window for apartment %s is NULL\n", wine_dbgstr_longlong(apt->oxid)); } } if (apt) apartment_release(apt); message_state->params.handle = ClientRpcChannelBuffer_GetEventHandle(This); /* Note: message_state->params.msg is initialised in * ClientRpcChannelBuffer_SendReceive */ /* shortcut the RPC runtime */ if (message_state->target_hwnd) { msg->Buffer = HeapAlloc(GetProcessHeap(), 0, msg->BufferLength); if (msg->Buffer) status = RPC_S_OK; else status = ERROR_OUTOFMEMORY; } else status = I_RpcGetBuffer(msg); msg->Handle = message_state; if (status == RPC_S_OK) { orpcthis = msg->Buffer; msg->Buffer = (char *)msg->Buffer + FIELD_OFFSET(WIRE_ORPCTHIS, extensions); orpcthis->version.MajorVersion = COM_MAJOR_VERSION; orpcthis->version.MinorVersion = COM_MINOR_VERSION; orpcthis->flags = message_state->channel_hook_info.dwServerPid ? ORPCF_LOCAL : ORPCF_NULL; orpcthis->reserved1 = 0; orpcthis->cid = message_state->channel_hook_info.uCausality; /* NDR representation of orpcthis->extensions */ *(DWORD *)msg->Buffer = extensions_size ? 1 : 0; msg->Buffer = (char *)msg->Buffer + sizeof(DWORD); if (extensions_size) { ORPC_EXTENT_ARRAY *orpc_extent_array = msg->Buffer; orpc_extent_array->size = extension_count; orpc_extent_array->reserved = 0; msg->Buffer = (char *)msg->Buffer + FIELD_OFFSET(WIRE_ORPC_EXTENT_ARRAY, extent); /* NDR representation of orpc_extent_array->extent */ *(DWORD *)msg->Buffer = 1; msg->Buffer = (char *)msg->Buffer + sizeof(DWORD); /* NDR representation of [size_is] attribute of orpc_extent_array->extent */ *(DWORD *)msg->Buffer = (extension_count + 1) & ~1; msg->Buffer = (char *)msg->Buffer + sizeof(DWORD); msg->Buffer = ChannelHooks_ClientFillBuffer(&message_state->channel_hook_info, msg->Buffer, channel_hook_data, channel_hook_count); /* we must add a dummy extension if there is an odd extension * count to meet the contract specified by the size_is attribute */ if (extension_count & 1) { WIRE_ORPC_EXTENT *wire_orpc_extent = msg->Buffer; wire_orpc_extent->conformance = 0; wire_orpc_extent->id = GUID_NULL; wire_orpc_extent->size = 0; msg->Buffer = (char *)msg->Buffer + FIELD_OFFSET(WIRE_ORPC_EXTENT, data[0]); } } /* store the prefixed data length so that we can restore the real buffer * pointer in ClientRpcChannelBuffer_SendReceive. */ message_state->prefix_data_len = (char *)msg->Buffer - (char *)orpcthis; msg->BufferLength -= message_state->prefix_data_len; } HeapFree(GetProcessHeap(), 0, channel_hook_data); TRACE("-- %d\n", status); return HRESULT_FROM_WIN32(status); } static HRESULT WINAPI ServerRpcChannelBuffer_SendReceive(LPRPCCHANNELBUFFER iface, RPCOLEMESSAGE *olemsg, ULONG *pstatus) { FIXME("stub\n"); return E_NOTIMPL; } /* this thread runs an outgoing RPC */ static DWORD WINAPI rpc_sendreceive_thread(LPVOID param) { struct dispatch_params *data = param; /* Note: I_RpcSendReceive doesn't raise exceptions like the higher-level * RPC functions do */ data->status = I_RpcSendReceive((RPC_MESSAGE *)data->msg); TRACE("completed with status 0x%x\n", data->status); SetEvent(data->handle); return 0; } static inline HRESULT ClientRpcChannelBuffer_IsCorrectApartment(ClientRpcChannelBuffer *This, APARTMENT *apt) { OXID oxid; if (!apt) return S_FALSE; if (apartment_getoxid(apt, &oxid) != S_OK) return S_FALSE; if (This->oxid != oxid) return S_FALSE; return S_OK; } static HRESULT WINAPI ClientRpcChannelBuffer_SendReceive(LPRPCCHANNELBUFFER iface, RPCOLEMESSAGE *olemsg, ULONG *pstatus) { ClientRpcChannelBuffer *This = (ClientRpcChannelBuffer *)iface; HRESULT hr; RPC_MESSAGE *msg = (RPC_MESSAGE *)olemsg; RPC_STATUS status; DWORD index; struct message_state *message_state; ORPCTHAT orpcthat; ORPC_EXTENT_ARRAY orpc_ext_array; WIRE_ORPC_EXTENT *first_wire_orpc_extent = NULL; HRESULT hrFault = S_OK; APARTMENT *apt = apartment_get_current_or_mta(); TRACE("(%p) iMethod=%d\n", olemsg, olemsg->iMethod); hr = ClientRpcChannelBuffer_IsCorrectApartment(This, apt); if (hr != S_OK) { ERR("called from wrong apartment, should have been 0x%s\n", wine_dbgstr_longlong(This->oxid)); if (apt) apartment_release(apt); return RPC_E_WRONG_THREAD; } /* This situation should be impossible in multi-threaded apartments, * because the calling thread isn't re-enterable. * Note: doing a COM call during the processing of a sent message is * only disallowed if a client call is already being waited for * completion */ if (!apt->multi_threaded && COM_CurrentInfo()->pending_call_count_client && InSendMessage()) { ERR("can't make an outgoing COM call in response to a sent message\n"); apartment_release(apt); return RPC_E_CANTCALLOUT_ININPUTSYNCCALL; } message_state = msg->Handle; /* restore the binding handle and the real start of data */ msg->Handle = message_state->binding_handle; msg->Buffer = (char *)msg->Buffer - message_state->prefix_data_len; msg->BufferLength += message_state->prefix_data_len; /* Note: this is an optimization in the Microsoft OLE runtime that we need * to copy, as shown by the test_no_couninitialize_client test. without * short-circuiting the RPC runtime in the case below, the test will * deadlock on the loader lock due to the RPC runtime needing to create * a thread to process the RPC when this function is called indirectly * from DllMain */ message_state->params.msg = olemsg; if (message_state->params.bypass_rpcrt) { TRACE("Calling apartment thread 0x%08x...\n", message_state->target_tid); msg->ProcNum &= ~RPC_FLAGS_VALID_BIT; if (!PostMessageW(message_state->target_hwnd, DM_EXECUTERPC, 0, (LPARAM)&message_state->params)) { ERR("PostMessage failed with error %u\n", GetLastError()); /* Note: message_state->params.iface doesn't have a reference and * so doesn't need to be released */ hr = HRESULT_FROM_WIN32(GetLastError()); } } else { /* we use a separate thread here because we need to be able to * pump the message loop in the application thread: if we do not, * any windows created by this thread will hang and RPCs that try * and re-enter this STA from an incoming server thread will * deadlock. InstallShield is an example of that. */ if (!QueueUserWorkItem(rpc_sendreceive_thread, &message_state->params, WT_EXECUTEDEFAULT)) { ERR("QueueUserWorkItem failed with error %u\n", GetLastError()); hr = E_UNEXPECTED; } else hr = S_OK; } if (hr == S_OK) { if (WaitForSingleObject(message_state->params.handle, 0)) { COM_CurrentInfo()->pending_call_count_client++; hr = CoWaitForMultipleHandles(0, INFINITE, 1, &message_state->params.handle, &index); COM_CurrentInfo()->pending_call_count_client--; } } ClientRpcChannelBuffer_ReleaseEventHandle(This, message_state->params.handle); /* for WM shortcut, faults are returned in params->hr */ if (hr == S_OK) hrFault = message_state->params.hr; status = message_state->params.status; orpcthat.flags = ORPCF_NULL; orpcthat.extensions = NULL; TRACE("RPC call status: 0x%x\n", status); if (status != RPC_S_OK) hr = HRESULT_FROM_WIN32(status); TRACE("hrFault = 0x%08x\n", hrFault); /* FIXME: this condition should be * "hr == S_OK && (!hrFault || msg->BufferLength > FIELD_OFFSET(ORPCTHAT, extensions) + 4)" * but we don't currently reset the message length for PostMessage * dispatched calls */ if (hr == S_OK && hrFault == S_OK) { HRESULT hr2; char *original_buffer = msg->Buffer; /* handle ORPCTHAT and client extensions */ hr2 = unmarshal_ORPCTHAT(msg, &orpcthat, &orpc_ext_array, &first_wire_orpc_extent); if (FAILED(hr2)) hr = hr2; message_state->prefix_data_len = (char *)msg->Buffer - original_buffer; msg->BufferLength -= message_state->prefix_data_len; } else message_state->prefix_data_len = 0; if (hr == S_OK) { ChannelHooks_ClientNotify(&message_state->channel_hook_info, msg->DataRepresentation, first_wire_orpc_extent, orpcthat.extensions && first_wire_orpc_extent ? orpcthat.extensions->size : 0, hrFault); } /* save away the message state again */ msg->Handle = message_state; if (pstatus) *pstatus = status; if (hr == S_OK) hr = hrFault; TRACE("-- 0x%08x\n", hr); apartment_release(apt); return hr; } static HRESULT WINAPI ServerRpcChannelBuffer_FreeBuffer(LPRPCCHANNELBUFFER iface, RPCOLEMESSAGE* olemsg) { RPC_MESSAGE *msg = (RPC_MESSAGE *)olemsg; RPC_STATUS status; struct message_state *message_state; TRACE("(%p)\n", msg); message_state = msg->Handle; /* restore the binding handle and the real start of data */ msg->Handle = message_state->binding_handle; msg->Buffer = (char *)msg->Buffer - message_state->prefix_data_len; msg->BufferLength += message_state->prefix_data_len; message_state->prefix_data_len = 0; if (message_state->bypass_rpcrt) { HeapFree(GetProcessHeap(), 0, msg->Buffer); status = RPC_S_OK; } else status = I_RpcFreeBuffer(msg); msg->Handle = message_state; TRACE("-- %d\n", status); return HRESULT_FROM_WIN32(status); } static HRESULT WINAPI ClientRpcChannelBuffer_FreeBuffer(LPRPCCHANNELBUFFER iface, RPCOLEMESSAGE* olemsg) { RPC_MESSAGE *msg = (RPC_MESSAGE *)olemsg; RPC_STATUS status; struct message_state *message_state; TRACE("(%p)\n", msg); message_state = msg->Handle; /* restore the binding handle and the real start of data */ msg->Handle = message_state->binding_handle; msg->Buffer = (char *)msg->Buffer - message_state->prefix_data_len; msg->BufferLength += message_state->prefix_data_len; if (message_state->params.bypass_rpcrt) { HeapFree(GetProcessHeap(), 0, msg->Buffer); status = RPC_S_OK; } else status = I_RpcFreeBuffer(msg); HeapFree(GetProcessHeap(), 0, msg->RpcInterfaceInformation); msg->RpcInterfaceInformation = NULL; if (message_state->params.stub) IRpcStubBuffer_Release(message_state->params.stub); if (message_state->params.chan) IRpcChannelBuffer_Release(message_state->params.chan); HeapFree(GetProcessHeap(), 0, message_state); TRACE("-- %d\n", status); return HRESULT_FROM_WIN32(status); } static HRESULT WINAPI ClientRpcChannelBuffer_GetDestCtx(LPRPCCHANNELBUFFER iface, DWORD* pdwDestContext, void** ppvDestContext) { ClientRpcChannelBuffer *This = (ClientRpcChannelBuffer *)iface; TRACE("(%p,%p)\n", pdwDestContext, ppvDestContext); *pdwDestContext = This->super.dest_context; *ppvDestContext = This->super.dest_context_data; return S_OK; } static HRESULT WINAPI ServerRpcChannelBuffer_GetDestCtx(LPRPCCHANNELBUFFER iface, DWORD* dest_context, void** dest_context_data) { RpcChannelBuffer *This = (RpcChannelBuffer *)iface; TRACE("(%p,%p)\n", dest_context, dest_context_data); *dest_context = This->dest_context; *dest_context_data = This->dest_context_data; return S_OK; } static HRESULT WINAPI RpcChannelBuffer_IsConnected(LPRPCCHANNELBUFFER iface) { TRACE("()\n"); /* native does nothing too */ return S_OK; } static const IRpcChannelBufferVtbl ClientRpcChannelBufferVtbl = { RpcChannelBuffer_QueryInterface, RpcChannelBuffer_AddRef, ClientRpcChannelBuffer_Release, ClientRpcChannelBuffer_GetBuffer, ClientRpcChannelBuffer_SendReceive, ClientRpcChannelBuffer_FreeBuffer, ClientRpcChannelBuffer_GetDestCtx, RpcChannelBuffer_IsConnected }; static const IRpcChannelBufferVtbl ServerRpcChannelBufferVtbl = { RpcChannelBuffer_QueryInterface, RpcChannelBuffer_AddRef, ServerRpcChannelBuffer_Release, ServerRpcChannelBuffer_GetBuffer, ServerRpcChannelBuffer_SendReceive, ServerRpcChannelBuffer_FreeBuffer, ServerRpcChannelBuffer_GetDestCtx, RpcChannelBuffer_IsConnected }; /* returns a channel buffer for proxies */ HRESULT RPC_CreateClientChannel(const OXID *oxid, const IPID *ipid, const OXID_INFO *oxid_info, const IID *iid, DWORD dest_context, void *dest_context_data, IRpcChannelBuffer **chan, APARTMENT *apt) { ClientRpcChannelBuffer *This; WCHAR endpoint[200]; RPC_BINDING_HANDLE bind; RPC_STATUS status; LPWSTR string_binding; /* FIXME: get the endpoint from oxid_info->psa instead */ get_rpc_endpoint(endpoint, oxid); TRACE("proxy pipe: connecting to endpoint: %s\n", debugstr_w(endpoint)); status = RpcStringBindingComposeW( NULL, wszRpcTransport, NULL, endpoint, NULL, &string_binding); if (status == RPC_S_OK) { status = RpcBindingFromStringBindingW(string_binding, &bind); if (status == RPC_S_OK) { IPID ipid2 = *ipid; /* why can't RpcBindingSetObject take a const? */ status = RpcBindingSetObject(bind, &ipid2); if (status != RPC_S_OK) RpcBindingFree(&bind); } RpcStringFreeW(&string_binding); } if (status != RPC_S_OK) { ERR("Couldn't get binding for endpoint %s, status = %d\n", debugstr_w(endpoint), status); return HRESULT_FROM_WIN32(status); } This = HeapAlloc(GetProcessHeap(), 0, sizeof(*This)); if (!This) { RpcBindingFree(&bind); return E_OUTOFMEMORY; } This->super.IRpcChannelBuffer_iface.lpVtbl = &ClientRpcChannelBufferVtbl; This->super.refs = 1; This->super.dest_context = dest_context; This->super.dest_context_data = dest_context_data; This->bind = bind; apartment_getoxid(apt, &This->oxid); This->server_pid = oxid_info->dwPid; This->event = NULL; This->iid = *iid; *chan = &This->super.IRpcChannelBuffer_iface; return S_OK; } HRESULT RPC_CreateServerChannel(DWORD dest_context, void *dest_context_data, IRpcChannelBuffer **chan) { RpcChannelBuffer *This = HeapAlloc(GetProcessHeap(), 0, sizeof(*This)); if (!This) return E_OUTOFMEMORY; This->IRpcChannelBuffer_iface.lpVtbl = &ServerRpcChannelBufferVtbl; This->refs = 1; This->dest_context = dest_context; This->dest_context_data = dest_context_data; *chan = &This->IRpcChannelBuffer_iface; return S_OK; } /* unmarshals ORPC_EXTENT_ARRAY according to NDR rules, but doesn't allocate * any memory */ static HRESULT unmarshal_ORPC_EXTENT_ARRAY(RPC_MESSAGE *msg, const char *end, ORPC_EXTENT_ARRAY *extensions, WIRE_ORPC_EXTENT **first_wire_orpc_extent) { DWORD pointer_id; DWORD i; memcpy(extensions, msg->Buffer, FIELD_OFFSET(WIRE_ORPC_EXTENT_ARRAY, extent)); msg->Buffer = (char *)msg->Buffer + FIELD_OFFSET(WIRE_ORPC_EXTENT_ARRAY, extent); if ((const char *)msg->Buffer + 2 * sizeof(DWORD) > end) return RPC_E_INVALID_HEADER; pointer_id = *(DWORD *)msg->Buffer; msg->Buffer = (char *)msg->Buffer + sizeof(DWORD); extensions->extent = NULL; if (pointer_id) { WIRE_ORPC_EXTENT *wire_orpc_extent; /* conformance */ if (*(DWORD *)msg->Buffer != ((extensions->size+1)&~1)) return RPC_S_INVALID_BOUND; msg->Buffer = (char *)msg->Buffer + sizeof(DWORD); /* arbitrary limit for security (don't know what native does) */ if (extensions->size > 256) { ERR("too many extensions: %d\n", extensions->size); return RPC_S_INVALID_BOUND; } *first_wire_orpc_extent = wire_orpc_extent = msg->Buffer; for (i = 0; i < ((extensions->size+1)&~1); i++) { if ((const char *)&wire_orpc_extent->data[0] > end) return RPC_S_INVALID_BOUND; if (wire_orpc_extent->conformance != ((wire_orpc_extent->size+7)&~7)) return RPC_S_INVALID_BOUND; if ((const char *)&wire_orpc_extent->data[wire_orpc_extent->conformance] > end) return RPC_S_INVALID_BOUND; TRACE("size %u, guid %s\n", wire_orpc_extent->size, debugstr_guid(&wire_orpc_extent->id)); wire_orpc_extent = (WIRE_ORPC_EXTENT *)&wire_orpc_extent->data[wire_orpc_extent->conformance]; } msg->Buffer = wire_orpc_extent; } return S_OK; } /* unmarshals ORPCTHIS according to NDR rules, but doesn't allocate any memory */ static HRESULT unmarshal_ORPCTHIS(RPC_MESSAGE *msg, ORPCTHIS *orpcthis, ORPC_EXTENT_ARRAY *orpc_ext_array, WIRE_ORPC_EXTENT **first_wire_orpc_extent) { const char *end = (char *)msg->Buffer + msg->BufferLength; *first_wire_orpc_extent = NULL; if (msg->BufferLength < FIELD_OFFSET(WIRE_ORPCTHIS, extensions) + sizeof(DWORD)) { ERR("invalid buffer length\n"); return RPC_E_INVALID_HEADER; } memcpy(orpcthis, msg->Buffer, FIELD_OFFSET(WIRE_ORPCTHIS, extensions)); msg->Buffer = (char *)msg->Buffer + FIELD_OFFSET(WIRE_ORPCTHIS, extensions); if ((const char *)msg->Buffer + sizeof(DWORD) > end) return RPC_E_INVALID_HEADER; if (*(DWORD *)msg->Buffer) orpcthis->extensions = orpc_ext_array; else orpcthis->extensions = NULL; msg->Buffer = (char *)msg->Buffer + sizeof(DWORD); if (orpcthis->extensions) { HRESULT hr = unmarshal_ORPC_EXTENT_ARRAY(msg, end, orpc_ext_array, first_wire_orpc_extent); if (FAILED(hr)) return hr; } if ((orpcthis->version.MajorVersion != COM_MAJOR_VERSION) || (orpcthis->version.MinorVersion > COM_MINOR_VERSION)) { ERR("COM version {%d, %d} not supported\n", orpcthis->version.MajorVersion, orpcthis->version.MinorVersion); return RPC_E_VERSION_MISMATCH; } if (orpcthis->flags & ~(ORPCF_LOCAL|ORPCF_RESERVED1|ORPCF_RESERVED2|ORPCF_RESERVED3|ORPCF_RESERVED4)) { ERR("invalid flags 0x%x\n", orpcthis->flags & ~(ORPCF_LOCAL|ORPCF_RESERVED1|ORPCF_RESERVED2|ORPCF_RESERVED3|ORPCF_RESERVED4)); return RPC_E_INVALID_HEADER; } return S_OK; } static HRESULT unmarshal_ORPCTHAT(RPC_MESSAGE *msg, ORPCTHAT *orpcthat, ORPC_EXTENT_ARRAY *orpc_ext_array, WIRE_ORPC_EXTENT **first_wire_orpc_extent) { const char *end = (char *)msg->Buffer + msg->BufferLength; *first_wire_orpc_extent = NULL; if (msg->BufferLength < FIELD_OFFSET(WIRE_ORPCTHAT, extensions) + sizeof(DWORD)) { ERR("invalid buffer length\n"); return RPC_E_INVALID_HEADER; } memcpy(orpcthat, msg->Buffer, FIELD_OFFSET(WIRE_ORPCTHAT, extensions)); msg->Buffer = (char *)msg->Buffer + FIELD_OFFSET(WIRE_ORPCTHAT, extensions); if ((const char *)msg->Buffer + sizeof(DWORD) > end) return RPC_E_INVALID_HEADER; if (*(DWORD *)msg->Buffer) orpcthat->extensions = orpc_ext_array; else orpcthat->extensions = NULL; msg->Buffer = (char *)msg->Buffer + sizeof(DWORD); if (orpcthat->extensions) { HRESULT hr = unmarshal_ORPC_EXTENT_ARRAY(msg, end, orpc_ext_array, first_wire_orpc_extent); if (FAILED(hr)) return hr; } if (orpcthat->flags & ~(ORPCF_LOCAL|ORPCF_RESERVED1|ORPCF_RESERVED2|ORPCF_RESERVED3|ORPCF_RESERVED4)) { ERR("invalid flags 0x%x\n", orpcthat->flags & ~(ORPCF_LOCAL|ORPCF_RESERVED1|ORPCF_RESERVED2|ORPCF_RESERVED3|ORPCF_RESERVED4)); return RPC_E_INVALID_HEADER; } return S_OK; } void RPC_ExecuteCall(struct dispatch_params *params) { struct message_state *message_state = NULL; RPC_MESSAGE *msg = (RPC_MESSAGE *)params->msg; char *original_buffer = msg->Buffer; ORPCTHIS orpcthis; ORPC_EXTENT_ARRAY orpc_ext_array; WIRE_ORPC_EXTENT *first_wire_orpc_extent; GUID old_causality_id; /* handle ORPCTHIS and server extensions */ params->hr = unmarshal_ORPCTHIS(msg, &orpcthis, &orpc_ext_array, &first_wire_orpc_extent); if (params->hr != S_OK) { msg->Buffer = original_buffer; goto exit; } message_state = HeapAlloc(GetProcessHeap(), 0, sizeof(*message_state)); if (!message_state) { params->hr = E_OUTOFMEMORY; msg->Buffer = original_buffer; goto exit; } message_state->prefix_data_len = (char *)msg->Buffer - original_buffer; message_state->binding_handle = msg->Handle; message_state->bypass_rpcrt = params->bypass_rpcrt; message_state->channel_hook_info.iid = params->iid; message_state->channel_hook_info.cbSize = sizeof(message_state->channel_hook_info); message_state->channel_hook_info.uCausality = orpcthis.cid; message_state->channel_hook_info.dwServerPid = GetCurrentProcessId(); message_state->channel_hook_info.iMethod = msg->ProcNum; message_state->channel_hook_info.pObject = params->iface; if (orpcthis.extensions && first_wire_orpc_extent && orpcthis.extensions->size) ChannelHooks_ServerNotify(&message_state->channel_hook_info, msg->DataRepresentation, first_wire_orpc_extent, orpcthis.extensions->size); msg->Handle = message_state; msg->BufferLength -= message_state->prefix_data_len; /* call message filter */ if (COM_CurrentApt()->filter) { DWORD handlecall; INTERFACEINFO interface_info; CALLTYPE calltype; interface_info.pUnk = params->iface; interface_info.iid = params->iid; interface_info.wMethod = msg->ProcNum; if (IsEqualGUID(&orpcthis.cid, &COM_CurrentInfo()->causality_id)) calltype = CALLTYPE_NESTED; else if (COM_CurrentInfo()->pending_call_count_server == 0) calltype = CALLTYPE_TOPLEVEL; else calltype = CALLTYPE_TOPLEVEL_CALLPENDING; handlecall = IMessageFilter_HandleInComingCall(COM_CurrentApt()->filter, calltype, UlongToHandle(GetCurrentProcessId()), 0 /* FIXME */, &interface_info); TRACE("IMessageFilter_HandleInComingCall returned %d\n", handlecall); switch (handlecall) { case SERVERCALL_REJECTED: params->hr = RPC_E_CALL_REJECTED; goto exit_reset_state; case SERVERCALL_RETRYLATER: #if 0 /* FIXME: handle retries on the client side before enabling this code */ params->hr = RPC_E_RETRY; goto exit_reset_state; #else FIXME("retry call later not implemented\n"); break; #endif case SERVERCALL_ISHANDLED: default: break; } } /* invoke the method */ /* save the old causality ID - note: any calls executed while processing * messages received during the SendReceive will appear to originate from * this call - this should be checked with what Windows does */ old_causality_id = COM_CurrentInfo()->causality_id; COM_CurrentInfo()->causality_id = orpcthis.cid; COM_CurrentInfo()->pending_call_count_server++; params->hr = IRpcStubBuffer_Invoke(params->stub, params->msg, params->chan); COM_CurrentInfo()->pending_call_count_server--; COM_CurrentInfo()->causality_id = old_causality_id; /* the invoke allocated a new buffer, so free the old one */ if (message_state->bypass_rpcrt && original_buffer != msg->Buffer) HeapFree(GetProcessHeap(), 0, original_buffer); exit_reset_state: message_state = msg->Handle; msg->Handle = message_state->binding_handle; msg->Buffer = (char *)msg->Buffer - message_state->prefix_data_len; msg->BufferLength += message_state->prefix_data_len; exit: HeapFree(GetProcessHeap(), 0, message_state); if (params->handle) SetEvent(params->handle); } static void __RPC_STUB dispatch_rpc(RPC_MESSAGE *msg) { struct dispatch_params *params; struct stub_manager *stub_manager; APARTMENT *apt; IPID ipid; HRESULT hr; RpcBindingInqObject(msg->Handle, &ipid); TRACE("ipid = %s, iMethod = %d\n", debugstr_guid(&ipid), msg->ProcNum); params = HeapAlloc(GetProcessHeap(), 0, sizeof(*params)); if (!params) { RpcRaiseException(E_OUTOFMEMORY); return; } hr = ipid_get_dispatch_params(&ipid, &apt, &stub_manager, ¶ms->stub, ¶ms->chan, ¶ms->iid, ¶ms->iface); if (hr != S_OK) { ERR("no apartment found for ipid %s\n", debugstr_guid(&ipid)); HeapFree(GetProcessHeap(), 0, params); RpcRaiseException(hr); return; } params->msg = (RPCOLEMESSAGE *)msg; params->status = RPC_S_OK; params->hr = S_OK; params->handle = NULL; params->bypass_rpcrt = FALSE; /* Note: this is the important difference between STAs and MTAs - we * always execute RPCs to STAs in the thread that originally created the * apartment (i.e. the one that pumps messages to the window) */ if (!apt->multi_threaded) { params->handle = CreateEventW(NULL, FALSE, FALSE, NULL); TRACE("Calling apartment thread 0x%08x...\n", apt->tid); if (PostMessageW(apartment_getwindow(apt), DM_EXECUTERPC, 0, (LPARAM)params)) WaitForSingleObject(params->handle, INFINITE); else { ERR("PostMessage failed with error %u\n", GetLastError()); IRpcChannelBuffer_Release(params->chan); IRpcStubBuffer_Release(params->stub); } CloseHandle(params->handle); } else { BOOL joined = FALSE; struct oletls *info = COM_CurrentInfo(); if (!info->apt) { enter_apartment(info, COINIT_MULTITHREADED); joined = TRUE; } RPC_ExecuteCall(params); if (joined) { leave_apartment(info); } } hr = params->hr; if (params->chan) IRpcChannelBuffer_Release(params->chan); if (params->stub) IRpcStubBuffer_Release(params->stub); HeapFree(GetProcessHeap(), 0, params); stub_manager_int_release(stub_manager); apartment_release(apt); /* if IRpcStubBuffer_Invoke fails, we should raise an exception to tell * the RPC runtime that the call failed */ if (hr != S_OK) RpcRaiseException(hr); } /* stub registration */ HRESULT RPC_RegisterInterface(REFIID riid) { struct registered_if *rif; BOOL found = FALSE; HRESULT hr = S_OK; TRACE("(%s)\n", debugstr_guid(riid)); EnterCriticalSection(&csRegIf); LIST_FOR_EACH_ENTRY(rif, ®istered_interfaces, struct registered_if, entry) { if (IsEqualGUID(&rif->If.InterfaceId.SyntaxGUID, riid)) { rif->refs++; found = TRUE; break; } } if (!found) { TRACE("Creating new interface\n"); rif = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*rif)); if (rif) { RPC_STATUS status; rif->refs = 1; rif->If.Length = sizeof(RPC_SERVER_INTERFACE); /* RPC interface ID = COM interface ID */ rif->If.InterfaceId.SyntaxGUID = *riid; rif->If.DispatchTable = &rpc_dispatch; /* all other fields are 0, including the version asCOM objects * always have a version of 0.0 */ status = RpcServerRegisterIfEx( (RPC_IF_HANDLE)&rif->If, NULL, NULL, RPC_IF_OLE | RPC_IF_AUTOLISTEN, RPC_C_LISTEN_MAX_CALLS_DEFAULT, NULL); if (status == RPC_S_OK) list_add_tail(®istered_interfaces, &rif->entry); else { ERR("RpcServerRegisterIfEx failed with error %d\n", status); HeapFree(GetProcessHeap(), 0, rif); hr = HRESULT_FROM_WIN32(status); } } else hr = E_OUTOFMEMORY; } LeaveCriticalSection(&csRegIf); return hr; } /* stub unregistration */ void RPC_UnregisterInterface(REFIID riid, BOOL wait) { struct registered_if *rif; EnterCriticalSection(&csRegIf); LIST_FOR_EACH_ENTRY(rif, ®istered_interfaces, struct registered_if, entry) { if (IsEqualGUID(&rif->If.InterfaceId.SyntaxGUID, riid)) { if (!--rif->refs) { RpcServerUnregisterIf((RPC_IF_HANDLE)&rif->If, NULL, wait); list_remove(&rif->entry); HeapFree(GetProcessHeap(), 0, rif); } break; } } LeaveCriticalSection(&csRegIf); } /* get the info for an OXID, including the IPID for the rem unknown interface * and the string binding */ HRESULT RPC_ResolveOxid(OXID oxid, OXID_INFO *oxid_info) { TRACE("%s\n", wine_dbgstr_longlong(oxid)); oxid_info->dwTid = 0; oxid_info->dwPid = 0; oxid_info->dwAuthnHint = RPC_C_AUTHN_LEVEL_NONE; /* FIXME: this is a hack around not having an OXID resolver yet - * this function should contact the machine's OXID resolver and then it * should give us the IPID of the IRemUnknown interface */ oxid_info->ipidRemUnknown.Data1 = 0xffffffff; oxid_info->ipidRemUnknown.Data2 = 0xffff; oxid_info->ipidRemUnknown.Data3 = 0xffff; memcpy(oxid_info->ipidRemUnknown.Data4, &oxid, sizeof(OXID)); oxid_info->psa = NULL /* FIXME */; return S_OK; } /* make the apartment reachable by other threads and processes and create the * IRemUnknown object */ void RPC_StartRemoting(struct apartment *apt) { if (!InterlockedExchange(&apt->remoting_started, TRUE)) { WCHAR endpoint[200]; RPC_STATUS status; get_rpc_endpoint(endpoint, &apt->oxid); status = RpcServerUseProtseqEpW( wszRpcTransport, RPC_C_PROTSEQ_MAX_REQS_DEFAULT, endpoint, NULL); if (status != RPC_S_OK) ERR("Couldn't register endpoint %s\n", debugstr_w(endpoint)); /* FIXME: move remote unknown exporting into this function */ } start_apartment_remote_unknown(apt); } static HRESULT create_server(REFCLSID rclsid, HANDLE *process) { static const WCHAR wszLocalServer32[] = { 'L','o','c','a','l','S','e','r','v','e','r','3','2',0 }; static const WCHAR embedding[] = { ' ', '-','E','m','b','e','d','d','i','n','g',0 }; HKEY key; HRESULT hres; WCHAR command[MAX_PATH+ARRAY_SIZE(embedding)]; DWORD size = (MAX_PATH+1) * sizeof(WCHAR); STARTUPINFOW sinfo; PROCESS_INFORMATION pinfo; LONG ret; hres = COM_OpenKeyForCLSID(rclsid, wszLocalServer32, KEY_READ, &key); if (FAILED(hres)) { ERR("class %s not registered\n", debugstr_guid(rclsid)); return hres; } ret = RegQueryValueExW(key, NULL, NULL, NULL, (LPBYTE)command, &size); RegCloseKey(key); if (ret) { 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. */ strcatW(command, embedding); TRACE("activating local server %s for %s\n", debugstr_w(command), debugstr_guid(rclsid)); /* FIXME: Win2003 supports a ServerExecutable value that is passed into * CreateProcess */ if (!CreateProcessW(NULL, command, NULL, NULL, FALSE, DETACHED_PROCESS, NULL, NULL, &sinfo, &pinfo)) { WARN("failed to run local server %s\n", debugstr_w(command)); return HRESULT_FROM_WIN32(GetLastError()); } *process = pinfo.hProcess; CloseHandle(pinfo.hThread); return S_OK; } /* * start_local_service() - start a service given its name and parameters */ static DWORD start_local_service(LPCWSTR name, DWORD num, LPCWSTR *params) { SC_HANDLE handle, hsvc; DWORD r = ERROR_FUNCTION_FAILED; TRACE("Starting service %s %d params\n", debugstr_w(name), num); handle = OpenSCManagerW(NULL, NULL, SC_MANAGER_CONNECT); if (!handle) return r; hsvc = OpenServiceW(handle, name, SERVICE_START); if (hsvc) { if(StartServiceW(hsvc, num, params)) r = ERROR_SUCCESS; else r = GetLastError(); if (r == ERROR_SERVICE_ALREADY_RUNNING) r = ERROR_SUCCESS; CloseServiceHandle(hsvc); } else r = GetLastError(); CloseServiceHandle(handle); TRACE("StartService returned error %u (%s)\n", r, (r == ERROR_SUCCESS) ? "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; WCHAR buf[CHARS_IN_GUID]; 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)); hres = COM_OpenKeyForAppIdFromCLSID(rclsid, KEY_READ, &hkey); if (FAILED(hres)) return hres; /* read the LocalService and ServiceParameters values from the AppID key */ 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, (LPCWSTR *)args); if (r != ERROR_SUCCESS) hres = REGDB_E_CLASSNOTREG; /* FIXME: check retval */ HeapFree(GetProcessHeap(),0,args[0]); } else { WARN("No LocalService value\n"); hres = REGDB_E_CLASSNOTREG; /* FIXME: check retval */ } RegCloseKey(hkey); return hres; } static void get_localserver_pipe_name(WCHAR *pipefn, REFCLSID rclsid) { static const WCHAR wszPipeRef[] = {'\\','\\','.','\\','p','i','p','e','\\',0}; strcpyW(pipefn, wszPipeRef); StringFromGUID2(rclsid, pipefn + ARRAY_SIZE(wszPipeRef) - 1, CHARS_IN_GUID); } /* FIXME: should call to rpcss instead */ HRESULT RPC_GetLocalClassObject(REFCLSID rclsid, REFIID iid, LPVOID *ppv) { HRESULT hres; HANDLE hPipe; WCHAR pipefn[100]; DWORD res, bufferlen; char marshalbuffer[200]; IStream *pStm; LARGE_INTEGER seekto; ULARGE_INTEGER newpos; int tries = 0; IServiceProvider *local_server; static const int MAXTRIES = 30; /* 30 seconds */ TRACE("rclsid=%s, iid=%s\n", debugstr_guid(rclsid), debugstr_guid(iid)); get_localserver_pipe_name(pipefn, rclsid); while (tries++ < MAXTRIES) { TRACE("waiting for %s\n", debugstr_w(pipefn)); WaitNamedPipeW( pipefn, NMPWAIT_WAIT_FOREVER ); hPipe = CreateFileW(pipefn, GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, 0); if (hPipe == INVALID_HANDLE_VALUE) { DWORD index; DWORD start_ticks; HANDLE process = 0; if (tries == 1) { if ( (hres = create_local_service(rclsid)) && (hres = create_server(rclsid, &process)) ) return hres; } else { WARN("Connecting to %s, no response yet, retrying: le is %u\n", debugstr_w(pipefn), GetLastError()); } /* wait for one second, even if messages arrive */ start_ticks = GetTickCount(); do { if (SUCCEEDED(CoWaitForMultipleHandles(0, 1000, (process != 0), &process, &index)) && process && !index) { WARN( "server for %s failed to start\n", debugstr_guid(rclsid) ); CloseHandle( hPipe ); CloseHandle( process ); return E_NOINTERFACE; } } while (GetTickCount() - start_ticks < 1000); if (process) CloseHandle( process ); 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)); CloseHandle(hPipe); 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 != S_OK) return hres; hres = IStream_Write(pStm,marshalbuffer,bufferlen,&res); if (hres != S_OK) goto out; seekto.u.LowPart = 0;seekto.u.HighPart = 0; hres = IStream_Seek(pStm,seekto,STREAM_SEEK_SET,&newpos); TRACE("unmarshalling local server\n"); hres = CoUnmarshalInterface(pStm, &IID_IServiceProvider, (void**)&local_server); if(SUCCEEDED(hres)) hres = IServiceProvider_QueryService(local_server, rclsid, iid, ppv); IServiceProvider_Release(local_server); out: IStream_Release(pStm); return hres; } struct local_server_params { CLSID clsid; IStream *stream; HANDLE pipe; HANDLE stop_event; HANDLE thread; BOOL multi_use; }; /* FIXME: should call to rpcss instead */ static DWORD WINAPI local_server_thread(LPVOID param) { struct local_server_params * lsp = param; WCHAR pipefn[100]; HRESULT hres; IStream *pStm = lsp->stream; STATSTG ststg; unsigned char *buffer; int buflen; LARGE_INTEGER seekto; ULARGE_INTEGER newpos; ULONG res; BOOL multi_use = lsp->multi_use; OVERLAPPED ovl; HANDLE pipe_event, hPipe = lsp->pipe, new_pipe; DWORD bytes; TRACE("Starting threader for %s.\n",debugstr_guid(&lsp->clsid)); memset(&ovl, 0, sizeof(ovl)); get_localserver_pipe_name(pipefn, &lsp->clsid); ovl.hEvent = pipe_event = CreateEventW(NULL, FALSE, FALSE, NULL); while (1) { if (!ConnectNamedPipe(hPipe, &ovl)) { DWORD error = GetLastError(); if (error == ERROR_IO_PENDING) { HANDLE handles[2] = { pipe_event, lsp->stop_event }; DWORD ret; ret = WaitForMultipleObjects(2, handles, FALSE, INFINITE); if (ret != WAIT_OBJECT_0) break; } /* client already connected isn't an error */ else if (error != ERROR_PIPE_CONNECTED) { ERR("ConnectNamedPipe failed with error %d\n", GetLastError()); break; } } TRACE("marshalling LocalServer to client\n"); hres = IStream_Stat(pStm,&ststg,STATFLAG_NONAME); if (hres != S_OK) break; seekto.u.LowPart = 0; seekto.u.HighPart = 0; hres = IStream_Seek(pStm,seekto,STREAM_SEEK_SET,&newpos); if (hres != S_OK) { FIXME("IStream_Seek failed, %x\n",hres); break; } buflen = ststg.cbSize.u.LowPart; buffer = HeapAlloc(GetProcessHeap(),0,buflen); hres = IStream_Read(pStm,buffer,buflen,&res); if (hres != S_OK) { FIXME("Stream Read failed, %x\n",hres); HeapFree(GetProcessHeap(),0,buffer); break; } WriteFile(hPipe,buffer,buflen,&res,&ovl); GetOverlappedResult(hPipe, &ovl, &bytes, TRUE); HeapFree(GetProcessHeap(),0,buffer); FlushFileBuffers(hPipe); DisconnectNamedPipe(hPipe); TRACE("done marshalling LocalServer\n"); if (!multi_use) { TRACE("single use object, shutting down pipe %s\n", debugstr_w(pipefn)); break; } new_pipe = CreateNamedPipeW( pipefn, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED, PIPE_TYPE_BYTE|PIPE_WAIT, PIPE_UNLIMITED_INSTANCES, 4096, 4096, 500 /* 0.5 second timeout */, NULL ); if (new_pipe == INVALID_HANDLE_VALUE) { FIXME("pipe creation failed for %s, le is %u\n", debugstr_w(pipefn), GetLastError()); break; } CloseHandle(hPipe); hPipe = new_pipe; } CloseHandle(pipe_event); CloseHandle(hPipe); return 0; } /* starts listening for a local server */ HRESULT RPC_StartLocalServer(REFCLSID clsid, IStream *stream, BOOL multi_use, void **registration) { DWORD tid, err; struct local_server_params *lsp; WCHAR pipefn[100]; lsp = HeapAlloc(GetProcessHeap(), 0, sizeof(*lsp)); if (!lsp) return E_OUTOFMEMORY; lsp->clsid = *clsid; lsp->stream = stream; IStream_AddRef(stream); lsp->stop_event = CreateEventW(NULL, FALSE, FALSE, NULL); if (!lsp->stop_event) { HeapFree(GetProcessHeap(), 0, lsp); return HRESULT_FROM_WIN32(GetLastError()); } lsp->multi_use = multi_use; get_localserver_pipe_name(pipefn, &lsp->clsid); lsp->pipe = CreateNamedPipeW(pipefn, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED, PIPE_TYPE_BYTE|PIPE_WAIT, PIPE_UNLIMITED_INSTANCES, 4096, 4096, 500 /* 0.5 second timeout */, NULL); if (lsp->pipe == INVALID_HANDLE_VALUE) { err = GetLastError(); FIXME("pipe creation failed for %s, le is %u\n", debugstr_w(pipefn), GetLastError()); CloseHandle(lsp->stop_event); HeapFree(GetProcessHeap(), 0, lsp); return HRESULT_FROM_WIN32(err); } lsp->thread = CreateThread(NULL, 0, local_server_thread, lsp, 0, &tid); if (!lsp->thread) { CloseHandle(lsp->pipe); CloseHandle(lsp->stop_event); HeapFree(GetProcessHeap(), 0, lsp); return HRESULT_FROM_WIN32(GetLastError()); } *registration = lsp; return S_OK; } /* stops listening for a local server */ void RPC_StopLocalServer(void *registration) { struct local_server_params *lsp = registration; /* signal local_server_thread to stop */ SetEvent(lsp->stop_event); /* wait for it to exit */ WaitForSingleObject(lsp->thread, INFINITE); IStream_Release(lsp->stream); CloseHandle(lsp->stop_event); CloseHandle(lsp->thread); HeapFree(GetProcessHeap(), 0, lsp); }