2 * Misc marshaling routines
4 * Copyright 2010 Huw Davies
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
24 #define NONAMELESSUNION
25 #define NONAMELESSSTRUCT
36 #include "wine/debug.h"
38 WINE_DEFAULT_DEBUG_CHANNEL(ole);
40 #define NULL_RESULT 0x20000
41 #define NULL_EXCEPINFO 0x40000
43 HRESULT CALLBACK IDispatchEx_InvokeEx_Proxy(IDispatchEx* This, DISPID id, LCID lcid, WORD wFlags,
44 DISPPARAMS *pdp, VARIANT *pvarRes, EXCEPINFO *pei,
45 IServiceProvider *pspCaller)
50 UINT byref_args, arg, dummy_idx;
51 VARIANT dummy_arg, *ref_arg = &dummy_arg, *copy_arg, *orig_arg = NULL;
52 UINT *ref_idx = &dummy_idx;
53 DWORD dword_flags = wFlags & 0xf;
55 TRACE("(%p)->(%08x, %04x, %04x, %p, %p, %p, %p)\n", This, id, lcid, wFlags,
56 pdp, pvarRes, pei, pspCaller);
61 dword_flags |= NULL_RESULT;
67 dword_flags |= NULL_EXCEPINFO;
70 for(arg = 0, byref_args = 0; arg < pdp->cArgs; arg++)
71 if(V_ISBYREF(pdp->rgvarg + arg)) byref_args++;
75 DWORD size = pdp->cArgs * sizeof(VARIANT) +
76 byref_args * (sizeof(VARIANT) + sizeof(UINT));
78 copy_arg = CoTaskMemAlloc(size);
79 if(!copy_arg) return E_OUTOFMEMORY;
81 ref_arg = copy_arg + pdp->cArgs;
82 ref_idx = (UINT*)(ref_arg + byref_args);
84 /* copy the byref args to ref_arg[], the others go to copy_arg[] */
85 for(arg = 0, byref_args = 0; arg < pdp->cArgs; arg++)
87 if(V_ISBYREF(pdp->rgvarg + arg))
89 ref_arg[byref_args] = pdp->rgvarg[arg];
90 ref_idx[byref_args] = arg;
91 VariantInit(copy_arg + arg);
95 copy_arg[arg] = pdp->rgvarg[arg];
98 orig_arg = pdp->rgvarg;
99 pdp->rgvarg = copy_arg;
102 hr = IDispatchEx_RemoteInvokeEx_Proxy(This, id, lcid, dword_flags, pdp, pvarRes, pei, pspCaller,
103 byref_args, ref_idx, ref_arg);
107 CoTaskMemFree(pdp->rgvarg);
108 pdp->rgvarg = orig_arg;
114 HRESULT __RPC_STUB IDispatchEx_InvokeEx_Stub(IDispatchEx* This, DISPID id, LCID lcid, DWORD dwFlags,
115 DISPPARAMS *pdp, VARIANT *result, EXCEPINFO *pei,
116 IServiceProvider *pspCaller, UINT byref_args,
117 UINT *ref_idx, VARIANT *ref_arg)
121 VARTYPE *vt_list = NULL;
123 TRACE("(%p)->(%08x, %04x, %08x, %p, %p, %p, %p, %d, %p, %p)\n", This, id, lcid, dwFlags,
124 pdp, result, pei, pspCaller, byref_args, ref_idx, ref_arg);
127 memset(pei, 0, sizeof(*pei));
129 for(arg = 0; arg < byref_args; arg++)
130 pdp->rgvarg[ref_idx[arg]] = ref_arg[arg];
132 if(dwFlags & NULL_RESULT) result = NULL;
133 if(dwFlags & NULL_EXCEPINFO) pei = NULL;
135 /* Create an array of the original VTs to check that the function doesn't change
139 vt_list = HeapAlloc(GetProcessHeap(), 0, pdp->cArgs * sizeof(vt_list[0]));
140 if(!vt_list) return E_OUTOFMEMORY;
141 for(arg = 0; arg < pdp->cArgs; arg++)
142 vt_list[arg] = V_VT(pdp->rgvarg + arg);
145 hr = IDispatchEx_InvokeEx(This, id, lcid, dwFlags & 0xffff, pdp, result, pei, pspCaller);
147 if(SUCCEEDED(hr) && byref_args)
149 for(arg = 0; arg < pdp->cArgs; arg++)
151 if(vt_list[arg] != V_VT(pdp->rgvarg + arg))
153 hr = DISP_E_BADCALLEE;
159 if(hr == DISP_E_EXCEPTION)
161 if(pei && pei->pfnDeferredFillIn)
163 pei->pfnDeferredFillIn(pei);
164 pei->pfnDeferredFillIn = NULL;
168 for(arg = 0; arg < byref_args; arg++)
169 VariantInit(pdp->rgvarg + ref_idx[arg]);
171 HeapFree(GetProcessHeap(), 0, vt_list);