dlls/mmsystem.dll16/driver.c

   1 /*
   2  * WINE Drivers functions
   3  *
   4  * Copyright 1994 Martin Ayotte
   5  * Copyright 1998 Marcus Meissner
   6  * Copyright 1999,2000 Eric Pouech
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  *
  22  * TODO:
  23  *      - LoadModule count and clean up is not handled correctly (it's not a
  24  *        problem as long as FreeLibrary is not working correctly)
  25  */
  26
  27 #include <stdarg.h>
  28 #include <string.h>
  29
  30 #include "windef.h"
  31 #include "winbase.h"
  32 #include "wine/winbase16.h"
  33 #include "wingdi.h"
  34 #include "winuser.h"
  35 #include "wownt32.h"
  36 #include "mmddk.h"
  37 #include "wine/mmsystem16.h"
  38 #include "wine/debug.h"
  39
  40 WINE_DEFAULT_DEBUG_CHANNEL(driver);
  41
  42 typedef struct tagWINE_DRIVER
  43 {
  44     /* as usual LPWINE_DRIVER == hDriver32 */
  45     HDRVR16                     hDriver16;
  46     HMODULE16                   hModule16;
  47     DRIVERPROC16                lpDrvProc;
  48     DWORD                       dwDriverID;
  49     struct tagWINE_DRIVER*      lpPrevItem;
  50     struct tagWINE_DRIVER*      lpNextItem;
  51 } WINE_DRIVER, *LPWINE_DRIVER;
  52
  53 static LPWINE_DRIVER    lpDrvItemList = NULL;
  54
  55
  56 /**************************************************************************
  57  *                      DRIVER_GetNumberOfModuleRefs            [internal]
  58  *
  59  * Returns the number of open drivers which share the same module.
  60  */
  61 static  WORD    DRIVER_GetNumberOfModuleRefs(LPWINE_DRIVER lpNewDrv)
  62 {
  63     LPWINE_DRIVER       lpDrv;
  64     WORD                count = 0;
  65
  66     for (lpDrv = lpDrvItemList; lpDrv; lpDrv = lpDrv->lpNextItem) {
  67         if (lpDrv->hModule16 == lpNewDrv->hModule16) {
  68             count++;
  69         }
  70     }
  71     return count;
  72 }
  73
  74 /**************************************************************************
  75  *                              DRIVER_FindFromHDrvr16          [internal]
  76  *
  77  * From a hDrvr being 16 bits, returns the WINE internal structure.
  78  */
  79 static  LPWINE_DRIVER   DRIVER_FindFromHDrvr16(HDRVR16 hDrvr)
  80 {
  81     LPWINE_DRIVER       lpDrv;
  82
  83     for (lpDrv = lpDrvItemList; lpDrv; lpDrv = lpDrv->lpNextItem) {
  84         if (lpDrv->hDriver16 == hDrvr) {
  85             break;
  86         }
  87     }
  88     return lpDrv;
  89 }
  90
  91 /**************************************************************************
  92  *                              DRIVER_SendMessage              [internal]
  93  */
  94 static inline LRESULT DRIVER_SendMessage(LPWINE_DRIVER lpDrv, UINT16 msg,
  95                                          LPARAM lParam1, LPARAM lParam2)
  96 {
  97     WORD args[8];
  98     DWORD ret;
  99
 100     TRACE("Before CallDriverProc proc=%p driverID=%08x wMsg=%04x p1=%08lx p2=%08lx\n",
 101           lpDrv->lpDrvProc, lpDrv->dwDriverID, msg, lParam1, lParam2);
 102
 103     args[7] = HIWORD(lpDrv->dwDriverID);
 104     args[6] = LOWORD(lpDrv->dwDriverID);
 105     args[5] = lpDrv->hDriver16;
 106     args[4] = msg;
 107     args[3] = HIWORD(lParam1);
 108     args[2] = LOWORD(lParam1);
 109     args[1] = HIWORD(lParam2);
 110     args[0] = LOWORD(lParam2);
 111     WOWCallback16Ex( (DWORD)lpDrv->lpDrvProc, WCB16_PASCAL, sizeof(args), args, &ret );
 112     return ret;
 113 }
 114
 115 /**************************************************************************
 116  *              DrvSendMessage (MMSYSTEM.1102)
 117  */
 118 LRESULT WINAPI DrvSendMessage16(HDRVR16 hDriver, UINT16 msg, LPARAM lParam1, LPARAM lParam2)
 119 {
 120     LPWINE_DRIVER       lpDrv;
 121     LRESULT             retval = 0;
 122
 123     TRACE("(%04x, %04X, %08lX, %08lX)\n", hDriver, msg, lParam1, lParam2);
 124
 125     if ((lpDrv = DRIVER_FindFromHDrvr16(hDriver)) != NULL) {
 126         retval = DRIVER_SendMessage(lpDrv, msg, lParam1, lParam2);
 127     } else {
 128         WARN("Bad driver handle %u\n", hDriver);
 129     }
 130
 131     TRACE("retval = %ld\n", retval);
 132     return retval;
 133 }
 134
 135 /**************************************************************************
 136  *                              DRIVER_RemoveFromList           [internal]
 137  *
 138  * Generates all the logic to handle driver closure / deletion
 139  * Removes a driver struct to the list of open drivers.
 140  */
 141 static  BOOL    DRIVER_RemoveFromList(LPWINE_DRIVER lpDrv)
 142 {
 143     lpDrv->dwDriverID = 0;
 144     if (DRIVER_GetNumberOfModuleRefs(lpDrv) == 1) {
 145         DRIVER_SendMessage(lpDrv, DRV_DISABLE, 0L, 0L);
 146         DRIVER_SendMessage(lpDrv, DRV_FREE,    0L, 0L);
 147     }
 148
 149     if (lpDrv->lpPrevItem)
 150         lpDrv->lpPrevItem->lpNextItem = lpDrv->lpNextItem;
 151     else
 152         lpDrvItemList = lpDrv->lpNextItem;
 153     if (lpDrv->lpNextItem)
 154         lpDrv->lpNextItem->lpPrevItem = lpDrv->lpPrevItem;
 155
 156     return TRUE;
 157 }
 158
 159 /**************************************************************************
 160  *                              DRIVER_AddToList                [internal]
 161  *
 162  * Adds a driver struct to the list of open drivers.
 163  * Generates all the logic to handle driver creation / open.
 164  */
 165 static  BOOL    DRIVER_AddToList(LPWINE_DRIVER lpNewDrv, LPARAM lParam1, LPARAM lParam2)
 166 {
 167     /* First driver to be loaded for this module, need to load correctly the module */
 168     if (DRIVER_GetNumberOfModuleRefs(lpNewDrv) == 0) {
 169         if (DRIVER_SendMessage(lpNewDrv, DRV_LOAD, 0L, 0L) != DRV_SUCCESS) {
 170             TRACE("DRV_LOAD failed on driver %p\n", lpNewDrv);
 171             return FALSE;
 172         }
 173         /* returned value is not checked */
 174         DRIVER_SendMessage(lpNewDrv, DRV_ENABLE, 0L, 0L);
 175     }
 176
 177     lpNewDrv->lpNextItem = NULL;
 178     if (lpDrvItemList == NULL) {
 179         lpDrvItemList = lpNewDrv;
 180         lpNewDrv->lpPrevItem = NULL;
 181     } else {
 182         LPWINE_DRIVER   lpDrv = lpDrvItemList;  /* find end of list */
 183         while (lpDrv->lpNextItem != NULL)
 184             lpDrv = lpDrv->lpNextItem;
 185
 186         lpDrv->lpNextItem = lpNewDrv;
 187         lpNewDrv->lpPrevItem = lpDrv;
 188     }
 189     /* Now just open a new instance of a driver on this module */
 190     lpNewDrv->dwDriverID = DRIVER_SendMessage(lpNewDrv, DRV_OPEN, lParam1, lParam2);
 191
 192     if (lpNewDrv->dwDriverID == 0) {
 193         TRACE("DRV_OPEN failed on driver %p\n", lpNewDrv);
 194         DRIVER_RemoveFromList(lpNewDrv);
 195         return FALSE;
 196     }
 197
 198     return TRUE;
 199 }
 200
 201 /**************************************************************************
 202  *                              DRIVER_TryOpenDriver16          [internal]
 203  *
 204  * Tries to load a 16 bit driver whose DLL's (module) name is lpFileName.
 205  */
 206 static  LPWINE_DRIVER   DRIVER_TryOpenDriver16(LPCSTR lpFileName, LPARAM lParam2)
 207 {
 208     static      WORD    DRIVER_hDrvr16Counter /* = 0 */;
 209     LPWINE_DRIVER       lpDrv = NULL;
 210     HMODULE16           hModule;
 211     DRIVERPROC16        lpProc;
 212     LPSTR               ptr;
 213
 214     TRACE("('%s', %08lX);\n", lpFileName, lParam2);
 215
 216     if (strlen(lpFileName) < 1) return lpDrv;
 217
 218     if ((ptr = strchr(lpFileName, ' ')) != NULL) {
 219         *ptr++ = '\0';
 220         while (*ptr == ' ') ptr++;
 221         if (*ptr == '\0') ptr = NULL;
 222     }
 223
 224     if ((hModule = LoadLibrary16(lpFileName)) < 32) goto exit;
 225     if ((lpProc = (DRIVERPROC16)GetProcAddress16(hModule, "DRIVERPROC")) == NULL)
 226         goto exit;
 227
 228     if ((lpDrv = HeapAlloc(GetProcessHeap(), 0, sizeof(WINE_DRIVER))) == NULL)
 229         goto exit;
 230
 231     lpDrv->dwDriverID  = 0;
 232     while (DRIVER_FindFromHDrvr16(++DRIVER_hDrvr16Counter));
 233     lpDrv->hDriver16   = DRIVER_hDrvr16Counter;
 234     lpDrv->hModule16   = hModule;
 235     lpDrv->lpDrvProc   = lpProc;
 236
 237     if (!DRIVER_AddToList(lpDrv, (LPARAM)ptr, lParam2)) goto exit;
 238
 239     return lpDrv;
 240  exit:
 241     TRACE("Unable to load 16 bit module (%s): %04x\n", lpFileName, hModule);
 242     if (hModule >= 32)  FreeLibrary16(hModule);
 243     HeapFree(GetProcessHeap(), 0, lpDrv);
 244     return NULL;
 245 }
 246
 247 /**************************************************************************
 248  *              DrvOpen (MMSYSTEM.1100)
 249  */
 250 HDRVR16 WINAPI DrvOpen16(LPCSTR lpDriverName, LPCSTR lpSectionName, LPARAM lParam2)
 251 {
 252     LPWINE_DRIVER       lpDrv = NULL;
 253     char                drvName[128];
 254
 255     TRACE("(%s, %s, %08lX);\n", debugstr_a(lpDriverName), debugstr_a(lpSectionName), lParam2);
 256
 257     if (!lpDriverName || !*lpDriverName) return 0;
 258
 259     if (lpSectionName == NULL) {
 260         strcpy(drvName, lpDriverName);
 261
 262         if ((lpDrv = DRIVER_TryOpenDriver16(drvName, lParam2)))
 263             goto the_end;
 264         /* in case hDriver is NULL, search in Drivers section */
 265         lpSectionName = "Drivers";
 266     }
 267     if (GetPrivateProfileStringA(lpSectionName, lpDriverName, "",
 268                                  drvName, sizeof(drvName), "SYSTEM.INI") > 0) {
 269         lpDrv = DRIVER_TryOpenDriver16(drvName, lParam2);
 270     }
 271     if (!lpDrv) {
 272         TRACE("Failed to open driver %s from system.ini file, section %s\n", debugstr_a(lpDriverName), debugstr_a(lpSectionName));
 273         return 0;
 274     }
 275  the_end:
 276     TRACE("=> %04x / %p\n", lpDrv->hDriver16, lpDrv);
 277     return lpDrv->hDriver16;
 278 }
 279
 280 /**************************************************************************
 281  *              DrvClose16 (MMSYSTEM.1101)
 282  */
 283 LRESULT WINAPI DrvClose16(HDRVR16 hDrvr, LPARAM lParam1, LPARAM lParam2)
 284 {
 285     LPWINE_DRIVER       lpDrv;
 286
 287     TRACE("(%04x, %08lX, %08lX);\n", hDrvr, lParam1, lParam2);
 288
 289     if ((lpDrv = DRIVER_FindFromHDrvr16(hDrvr)) != NULL) {
 290         DRIVER_SendMessage(lpDrv, DRV_CLOSE, lParam1, lParam2);
 291
 292         if (DRIVER_RemoveFromList(lpDrv)) {
 293             HeapFree(GetProcessHeap(), 0, lpDrv);
 294             return TRUE;
 295         }
 296     }
 297     WARN("Failed to close driver\n");
 298     return FALSE;
 299 }
 300
 301 /**************************************************************************
 302  *              DrvGetModuleHandle (MMSYSTEM.1103)
 303  */
 304 HMODULE16 WINAPI DrvGetModuleHandle16(HDRVR16 hDrvr)
 305 {
 306     LPWINE_DRIVER       lpDrv;
 307     HMODULE16           hModule = 0;
 308
 309     TRACE("(%04x);\n", hDrvr);
 310
 311     if ((lpDrv = DRIVER_FindFromHDrvr16(hDrvr)) != NULL) {
 312         hModule = lpDrv->hModule16;
 313     }
 314     TRACE("=> %04x\n", hModule);
 315     return hModule;
 316 }
 317
 318 /**************************************************************************
 319  *              DrvDefDriverProc (MMSYSTEM.1104)
 320  */
 321 LRESULT WINAPI DrvDefDriverProc16(DWORD dwDevID, HDRVR16 hDriv, UINT16 wMsg,
 322                                   LPARAM lParam1, LPARAM lParam2)
 323 {
 324     TRACE("devID=0x%08x hDrv=0x%04x wMsg=%04x lP1=0x%08lx lP2=0x%08lx\n",
 325           dwDevID, hDriv, wMsg, lParam1, lParam2);
 326
 327     switch(wMsg) {
 328     case DRV_LOAD:
 329     case DRV_FREE:
 330     case DRV_ENABLE:
 331     case DRV_DISABLE:
 332         return (LRESULT)1L;
 333     case DRV_OPEN:
 334     case DRV_CLOSE:
 335     case DRV_QUERYCONFIGURE:
 336         return (LRESULT)0L;
 337     case DRV_CONFIGURE:
 338         MessageBoxA(0, "Driver isn't configurable !", "Wine Driver", MB_OK);
 339         return (LRESULT)0L;
 340     case DRV_INSTALL:
 341     case DRV_REMOVE:
 342         return DRV_SUCCESS;
 343     default:
 344         return (LRESULT)0L;
 345     }
 346 }
 347
 348 /**************************************************************************
 349  *              DriverProc (MMSYSTEM.6)
 350  */
 351 LRESULT WINAPI DriverProc16(DWORD dwDevID, HDRVR16 hDrv, WORD wMsg,
 352                             DWORD dwParam1, DWORD dwParam2)
 353 {
 354     return DrvDefDriverProc16(dwDevID, hDrv, wMsg, dwParam1, dwParam2);
 355 }