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 static IMalloc16_VTable mvt16 = {
 125         IMalloc16_QueryInterface,
 126         IMalloc16_AddRef,
 127         IMalloc16_Release,
 128         IMalloc16_Alloc,
 129         IMalloc16_Realloc,
 130         IMalloc16_Free,
 131         IMalloc16_GetSize,
 132         IMalloc16_DidAlloc,
 133         IMalloc16_HeapMinimize,
 134 };
 135 static IMalloc16_VTable *msegvt16 = NULL;
 136
 137 LPMALLOC16
 138 IMalloc16_Constructor() {
 139         LPMALLOC16      this;
 140         HMODULE16       hcomp = GetModuleHandle16("COMPOBJ");
 141
 142         this = (LPMALLOC16)SEGPTR_NEW(IMalloc16);
 143         if (!msegvt16) {
 144             this->lpvtbl = msegvt16 = SEGPTR_NEW(IMalloc16_VTable);
 145
 146 #define FN(x) this->lpvtbl->fn##x = (void*)WIN32_GetProcAddress16(hcomp,"IMalloc16_"#x);assert(this->lpvtbl->fn##x)
 147             FN(QueryInterface);
 148             FN(AddRef);
 149             FN(Release);
 150             FN(Alloc);
 151             FN(Realloc);
 152             FN(Free);
 153             FN(GetSize);
 154             FN(DidAlloc);
 155             FN(HeapMinimize);
 156             msegvt16 = (LPMALLOC16_VTABLE)SEGPTR_GET(msegvt16);
 157 #undef FN
 158             this->lpvtbl = msegvt16;
 159         }
 160         this->ref = 1;
 161         /* FIXME: implement multiple heaps */
 162         this->heap = GlobalAlloc16(GMEM_MOVEABLE,64000);
 163         LocalInit(this->heap,0,64000);
 164         return (LPMALLOC16)SEGPTR_GET(this);
 165 }
 166
 167 /****************************************************************************
 168  * IMalloc32
 169  */
 170 static ULONG WINAPI IMalloc32_AddRef(LPMALLOC32 this) {
 171         TRACE(relay,"(%p)->AddRef()\n",this);
 172         return 1; /* cannot be freed */
 173 }
 174
 175 static ULONG WINAPI IMalloc32_Release(LPMALLOC32 this) {
 176         TRACE(relay,"(%p)->Release()\n",this);
 177         return 1; /* cannot be freed */
 178 }
 179
 180 static HRESULT WINAPI IMalloc32_QueryInterface(LPMALLOC32 this,REFIID refiid,LPVOID *obj) {
 181         char    xrefiid[50];
 182
 183         WINE_StringFromCLSID((LPCLSID)refiid,xrefiid);
 184         TRACE(relay,"(%p)->QueryInterface(%s,%p)\n",this,xrefiid,obj);
 185         if (    !memcmp(&IID_IUnknown,refiid,sizeof(IID_IUnknown)) ||
 186                 !memcmp(&IID_IMalloc,refiid,sizeof(IID_IMalloc))
 187         ) {
 188                 *obj = this;
 189                 return 0;
 190         }
 191         return OLE_E_ENUM_NOMORE;
 192 }
 193
 194 static LPVOID WINAPI IMalloc32_Alloc(LPMALLOC32 this,DWORD cb) {
 195         TRACE(relay,"(%p)->Alloc(%ld)\n",this,cb);
 196         return HeapAlloc(GetProcessHeap(),0,cb);
 197 }
 198
 199 static LPVOID WINAPI IMalloc32_Realloc(LPMALLOC32 this,LPVOID pv,DWORD cb) {
 200         TRACE(relay,"(%p)->Realloc(%p,%ld)\n",this,pv,cb);
 201         return HeapReAlloc(GetProcessHeap(),0,pv,cb);
 202 }
 203 static VOID WINAPI IMalloc32_Free(LPMALLOC32 this,LPVOID pv) {
 204         TRACE(relay,"(%p)->Free(%p)\n",this,pv);
 205         HeapFree(GetProcessHeap(),0,pv);
 206 }
 207
 208 static DWORD WINAPI IMalloc32_GetSize(LPMALLOC32 this,LPVOID pv) {
 209         TRACE(relay,"(%p)->GetSize(%p)\n",this,pv);
 210         return HeapSize(GetProcessHeap(),0,pv);
 211 }
 212
 213 static INT32 WINAPI IMalloc32_DidAlloc(LPMALLOC32 this,LPVOID pv) {
 214         TRACE(relay,"(%p)->DidAlloc(%p)\n",this,pv);
 215         return -1;
 216 }
 217 static LPVOID WINAPI IMalloc32_HeapMinimize(LPMALLOC32 this) {
 218         TRACE(relay,"(%p)->HeapMinimize()\n",this);
 219         return NULL;
 220 }
 221
 222 static IMalloc32_VTable VT_IMalloc32 = {
 223         IMalloc32_QueryInterface,
 224         IMalloc32_AddRef,
 225         IMalloc32_Release,
 226         IMalloc32_Alloc,
 227         IMalloc32_Realloc,
 228         IMalloc32_Free,
 229         IMalloc32_GetSize,
 230         IMalloc32_DidAlloc,
 231         IMalloc32_HeapMinimize,
 232 };
 233
 234 LPMALLOC32
 235 IMalloc32_Constructor() {
 236         LPMALLOC32      this;
 237
 238         this = (LPMALLOC32)HeapAlloc(GetProcessHeap(),0,sizeof(IMalloc32));
 239         this->lpvtbl = &VT_IMalloc32;
 240         this->ref = 1;
 241         return this;
 242 }
 243 /****************************************************************************
 244  * API Functions
 245  */
 246 /****************************************************************************
 247  *              IsValidInterface                (OLE32.78)
 248  * RETURNS
 249  *  True, if the passed pointer is a valid interface
 250  */
 251 BOOL32 WINAPI IsValidInterface32(
 252         LPUNKNOWN punk  /* [in] interface to be tested */
 253 ) {
 254         return !(
 255                 IsBadReadPtr32(punk,4)                                  ||
 256                 IsBadReadPtr32(punk->lpvtbl,4)                          ||
 257                 IsBadReadPtr32(punk->lpvtbl->fnQueryInterface,9)        ||
 258                 IsBadCodePtr32(punk->lpvtbl->fnQueryInterface)
 259         );
 260 }