ole/ifs.c

   1 /*
   2  *      basic interfaces
   3  *
   4  *      Copyright 1997  Marcus Meissner
   5  */
   6
   7 #include <ctype.h>
   8 #include <stdlib.h>
   9 #include <string.h>
  10 #include <assert.h>
  11 #include "winerror.h"
  12 #include "ole.h"
  13 #include "ole2.h"
  14 #include "ldt.h"
  15 #include "heap.h"
  16 #include "compobj.h"
  17 #include "interfaces.h"
  18 #include "shlobj.h"
  19 #include "local.h"
  20 #include "module.h"
  21 #include "debug.h"
  22
  23 /****************************************************************************
  24  * IUnknown
  25  */
  26 static ULONG WINAPI IUnknown_AddRef(LPUNKNOWN this) {
  27         TRACE(relay,"(%p)->AddRef()\n",this);
  28         return ++(this->ref);
  29 }
  30 static ULONG WINAPI IUnknown_Release(LPUNKNOWN this) {
  31         TRACE(relay,"(%p)->Release()\n",this);
  32         if (!--(this->ref)) {
  33                 HeapFree(GetProcessHeap(),0,this);
  34                 return 0;
  35         }
  36         return this->ref;
  37 }
  38
  39 static HRESULT WINAPI IUnknown_QueryInterface(LPUNKNOWN this,REFIID refiid,LPVOID *obj) {
  40         char    xrefiid[50];
  41
  42         WINE_StringFromCLSID((LPCLSID)refiid,xrefiid);
  43         TRACE(relay,"(%p)->QueryInterface(%s,%p)\n",this,xrefiid,obj);
  44
  45         if (!memcmp(&IID_IUnknown,refiid,sizeof(IID_IUnknown))) {
  46                 *obj = this;
  47                 return 0;
  48         }
  49         return OLE_E_ENUM_NOMORE;
  50 }
  51
  52 static IUnknown_VTable uvt = {
  53         IUnknown_QueryInterface,
  54         IUnknown_AddRef,
  55         IUnknown_Release
  56 };
  57
  58
  59 LPUNKNOWN
  60 IUnknown_Constructor() {
  61         LPUNKNOWN       unk;
  62
  63         unk = (LPUNKNOWN)HeapAlloc(GetProcessHeap(),0,sizeof(IUnknown));
  64         unk->lpvtbl     = &uvt;
  65         unk->ref        = 1;
  66         return unk;
  67 }
  68
  69 /****************************************************************************
  70  * IMalloc16
  71  */
  72 ULONG WINAPI IMalloc16_AddRef(LPMALLOC16 this) {
  73         TRACE(relay,"(%p)->AddRef()\n",this);
  74         return 1; /* cannot be freed */
  75 }
  76
  77 ULONG WINAPI IMalloc16_Release(LPMALLOC16 this) {
  78         TRACE(relay,"(%p)->Release()\n",this);
  79         return 1; /* cannot be freed */
  80 }
  81
  82 HRESULT WINAPI IMalloc16_QueryInterface(LPMALLOC16 this,REFIID refiid,LPVOID *obj) {
  83         char    xrefiid[50];
  84
  85         WINE_StringFromCLSID((LPCLSID)refiid,xrefiid);
  86         TRACE(relay,"(%p)->QueryInterface(%s,%p)\n",this,xrefiid,obj);
  87         if (    !memcmp(&IID_IUnknown,refiid,sizeof(IID_IUnknown)) ||
  88                 !memcmp(&IID_IMalloc,refiid,sizeof(IID_IMalloc))
  89         ) {
  90                 *obj = this;
  91                 return 0;
  92         }
  93         return OLE_E_ENUM_NOMORE;
  94 }
  95
  96 LPVOID WINAPI IMalloc16_Alloc(LPMALLOC16 this,DWORD cb) {
  97         TRACE(relay,"(%p)->Alloc(%ld)\n",this,cb);
  98         return (LPVOID)PTR_SEG_OFF_TO_SEGPTR(this->heap,LOCAL_Alloc(this->heap,0,cb));
  99 }
 100
 101 LPVOID WINAPI IMalloc16_Realloc(LPMALLOC16 this,LPVOID pv,DWORD cb) {
 102         TRACE(relay,"(%p)->Realloc(%p,%ld)\n",this,pv,cb);
 103         return (LPVOID)PTR_SEG_OFF_TO_SEGPTR(this->heap,LOCAL_ReAlloc(this->heap,0,LOWORD(pv),cb));
 104 }
 105 VOID WINAPI IMalloc16_Free(LPMALLOC16 this,LPVOID pv) {
 106         TRACE(relay,"(%p)->Free(%p)\n",this,pv);
 107         LOCAL_Free(this->heap,LOWORD(pv));
 108 }
 109
 110 DWORD WINAPI IMalloc16_GetSize(LPMALLOC16 this,LPVOID pv) {
 111         TRACE(relay,"(%p)->GetSize(%p)\n",this,pv);
 112         return LOCAL_Size(this->heap,LOWORD(pv));
 113 }
 114
 115 INT16 WINAPI IMalloc16_DidAlloc(LPMALLOC16 this,LPVOID pv) {
 116         TRACE(relay,"(%p)->DidAlloc(%p)\n",this,pv);
 117         return (INT16)-1;
 118 }
 119 LPVOID WINAPI IMalloc16_HeapMinimize(LPMALLOC16 this) {
 120         TRACE(relay,"(%p)->HeapMinimize()\n",this);
 121         return NULL;
 122 }
 123
 124 #ifdef OLD_TABLE
 125 /* FIXME: This is unused */
 126 static IMalloc16_VTable mvt16 = {
 127         IMalloc16_QueryInterface,
 128         IMalloc16_AddRef,
 129         IMalloc16_Release,
 130         IMalloc16_Alloc,
 131         IMalloc16_Realloc,
 132         IMalloc16_Free,
 133         IMalloc16_GetSize,
 134         IMalloc16_DidAlloc,
 135         IMalloc16_HeapMinimize,
 136 };
 137 #endif
 138 static IMalloc16_VTable *msegvt16 = NULL;
 139
 140 LPMALLOC16
 141 IMalloc16_Constructor() {
 142         LPMALLOC16      this;
 143         HMODULE16       hcomp = GetModuleHandle16("COMPOBJ");
 144
 145         this = (LPMALLOC16)SEGPTR_NEW(IMalloc16);
 146         if (!msegvt16) {
 147             this->lpvtbl = msegvt16 = SEGPTR_NEW(IMalloc16_VTable);
 148
 149 #define FN(x) this->lpvtbl->fn##x = (void*)WIN32_GetProcAddress16(hcomp,"IMalloc16_"#x);assert(this->lpvtbl->fn##x)
 150             FN(QueryInterface);
 151             FN(AddRef);
 152             FN(Release);
 153             FN(Alloc);
 154             FN(Realloc);
 155             FN(Free);
 156             FN(GetSize);
 157             FN(DidAlloc);
 158             FN(HeapMinimize);
 159             msegvt16 = (LPMALLOC16_VTABLE)SEGPTR_GET(msegvt16);
 160 #undef FN
 161             this->lpvtbl = msegvt16;
 162         }
 163         this->ref = 1;
 164         /* FIXME: implement multiple heaps */
 165         this->heap = GlobalAlloc16(GMEM_MOVEABLE,64000);
 166         LocalInit(this->heap,0,64000);
 167         return (LPMALLOC16)SEGPTR_GET(this);
 168 }
 169
 170 /****************************************************************************
 171  * IMalloc32
 172  */
 173 static ULONG WINAPI IMalloc32_AddRef(LPMALLOC32 this) {
 174         TRACE(relay,"(%p)->AddRef()\n",this);
 175         return 1; /* cannot be freed */
 176 }
 177
 178 static ULONG WINAPI IMalloc32_Release(LPMALLOC32 this) {
 179         TRACE(relay,"(%p)->Release()\n",this);
 180         return 1; /* cannot be freed */
 181 }
 182
 183 static HRESULT WINAPI IMalloc32_QueryInterface(LPMALLOC32 this,REFIID refiid,LPVOID *obj) {
 184         char    xrefiid[50];
 185
 186         WINE_StringFromCLSID((LPCLSID)refiid,xrefiid);
 187         TRACE(relay,"(%p)->QueryInterface(%s,%p)\n",this,xrefiid,obj);
 188         if (    !memcmp(&IID_IUnknown,refiid,sizeof(IID_IUnknown)) ||
 189                 !memcmp(&IID_IMalloc,refiid,sizeof(IID_IMalloc))
 190         ) {
 191                 *obj = this;
 192                 return 0;
 193         }
 194         return OLE_E_ENUM_NOMORE;
 195 }
 196
 197 static LPVOID WINAPI IMalloc32_Alloc(LPMALLOC32 this,DWORD cb) {
 198         TRACE(relay,"(%p)->Alloc(%ld)\n",this,cb);
 199         return HeapAlloc(GetProcessHeap(),0,cb);
 200 }
 201
 202 static LPVOID WINAPI IMalloc32_Realloc(LPMALLOC32 this,LPVOID pv,DWORD cb) {
 203         TRACE(relay,"(%p)->Realloc(%p,%ld)\n",this,pv,cb);
 204         return HeapReAlloc(GetProcessHeap(),0,pv,cb);
 205 }
 206 static VOID WINAPI IMalloc32_Free(LPMALLOC32 this,LPVOID pv) {
 207         TRACE(relay,"(%p)->Free(%p)\n",this,pv);
 208         HeapFree(GetProcessHeap(),0,pv);
 209 }
 210
 211 static DWORD WINAPI IMalloc32_GetSize(LPMALLOC32 this,LPVOID pv) {
 212         TRACE(relay,"(%p)->GetSize(%p)\n",this,pv);
 213         return HeapSize(GetProcessHeap(),0,pv);
 214 }
 215
 216 static INT32 WINAPI IMalloc32_DidAlloc(LPMALLOC32 this,LPVOID pv) {
 217         TRACE(relay,"(%p)->DidAlloc(%p)\n",this,pv);
 218         return -1;
 219 }
 220 static LPVOID WINAPI IMalloc32_HeapMinimize(LPMALLOC32 this) {
 221         TRACE(relay,"(%p)->HeapMinimize()\n",this);
 222         return NULL;
 223 }
 224
 225 static IMalloc32_VTable VT_IMalloc32 = {
 226         IMalloc32_QueryInterface,
 227         IMalloc32_AddRef,
 228         IMalloc32_Release,
 229         IMalloc32_Alloc,
 230         IMalloc32_Realloc,
 231         IMalloc32_Free,
 232         IMalloc32_GetSize,
 233         IMalloc32_DidAlloc,
 234         IMalloc32_HeapMinimize,
 235 };
 236
 237 LPMALLOC32
 238 IMalloc32_Constructor() {
 239         LPMALLOC32      this;
 240
 241         this = (LPMALLOC32)HeapAlloc(GetProcessHeap(),0,sizeof(IMalloc32));
 242         this->lpvtbl = &VT_IMalloc32;
 243         this->ref = 1;
 244         return this;
 245 }
 246 /****************************************************************************
 247  * API Functions
 248  */
 249 /****************************************************************************
 250  *              IsValidInterface                (OLE32.78)
 251  * RETURNS
 252  *  True, if the passed pointer is a valid interface
 253  */
 254 BOOL32 WINAPI IsValidInterface32(
 255         LPUNKNOWN punk  /* [in] interface to be tested */
 256 ) {
 257         return !(
 258                 IsBadReadPtr32(punk,4)                                  ||
 259                 IsBadReadPtr32(punk->lpvtbl,4)                          ||
 260                 IsBadReadPtr32(punk->lpvtbl->fnQueryInterface,9)        ||
 261                 IsBadCodePtr32(punk->lpvtbl->fnQueryInterface)
 262         );
 263 }