windows/driver.c

   1 /* -*- tab-width: 8; c-basic-offset: 4 -*- */
   2
   3 /*
   4  * WINE Drivers functions
   5  *
   6  * Copyright 1994 Martin Ayotte
   7  * Copyright 1998 Marcus Meissner
   8  * Copyright 1999,2000 Eric Pouech
   9  *
  10  * This library is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU Lesser General Public
  12  * License as published by the Free Software Foundation; either
  13  * version 2.1 of the License, or (at your option) any later version.
  14  *
  15  * This library is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public
  21  * License along with this library; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  23  */
  24
  25 #include <string.h>
  26
  27 #include "windef.h"
  28 #include "wine/winbase16.h"
  29 #include "wingdi.h"
  30 #include "winuser.h"
  31 #include "mmddk.h"
  32 #include "wine/debug.h"
  33
  34 WINE_DEFAULT_DEBUG_CHANNEL(driver);
  35
  36 typedef struct tagWINE_DRIVER
  37 {
  38     char                        szAliasName[128];
  39     /* as usual LPWINE_DRIVER == hDriver32 */
  40     HDRVR16                     hDriver16;
  41     HMODULE16                   hModule16;
  42     DRIVERPROC16                lpDrvProc;
  43     DWORD                       dwDriverID;
  44     struct tagWINE_DRIVER*      lpPrevItem;
  45     struct tagWINE_DRIVER*      lpNextItem;
  46 } WINE_DRIVER, *LPWINE_DRIVER;
  47
  48 static LPWINE_DRIVER    lpDrvItemList = NULL;
  49
  50 /* TODO list :
  51  *      - LoadModule count and clean up is not handled correctly (it's not a
  52  *        problem as long as FreeLibrary is not working correctly)
  53  */
  54
  55 /* ### start build ### */
  56 extern LONG CALLBACK DRIVER_CallTo16_long_lwwll(FARPROC16,LONG,WORD,WORD,LONG,LONG);
  57 /* ### stop build ### */
  58
  59 /**************************************************************************
  60  *                      LoadStartupDrivers                      [internal]
  61  */
  62 static void WINE_UNUSED DRIVER_LoadStartupDrivers(void)
  63 {
  64     char        str[256];
  65
  66     if (GetPrivateProfileStringA("drivers", NULL, "", str, sizeof(str), "SYSTEM.INI") < 2) {
  67         ERR("Can't find drivers section in system.ini\n");
  68     } else {
  69         HDRVR16 hDrv;
  70         LPSTR   ptr;
  71
  72         for (ptr = str; *ptr; ptr += strlen(ptr) + 1) {
  73             TRACE("str='%s'\n", ptr);
  74             hDrv = OpenDriver16(ptr, "drivers", 0L);
  75             TRACE("hDrv=%04x\n", hDrv);
  76         }
  77         TRACE("end of list !\n");
  78     }
  79 }
  80
  81 /**************************************************************************
  82  *                      DRIVER_GetNumberOfModuleRefs            [internal]
  83  *
  84  * Returns the number of open drivers which share the same module.
  85  */
  86 static  WORD    DRIVER_GetNumberOfModuleRefs(LPWINE_DRIVER lpNewDrv)
  87 {
  88     LPWINE_DRIVER       lpDrv;
  89     WORD                count = 0;
  90
  91     for (lpDrv = lpDrvItemList; lpDrv; lpDrv = lpDrv->lpNextItem) {
  92         if (lpDrv->hModule16 == lpNewDrv->hModule16) {
  93             count++;
  94         }
  95     }
  96     return count;
  97 }
  98
  99 /**************************************************************************
 100  *                              DRIVER_FindFromHDrvr16          [internal]
 101  *
 102  * From a hDrvr being 16 bits, returns the WINE internal structure.
 103  */
 104 static  LPWINE_DRIVER   DRIVER_FindFromHDrvr16(HDRVR16 hDrvr)
 105 {
 106     LPWINE_DRIVER       lpDrv;
 107
 108     for (lpDrv = lpDrvItemList; lpDrv; lpDrv = lpDrv->lpNextItem) {
 109         if (lpDrv->hDriver16 == hDrvr) {
 110             break;
 111         }
 112     }
 113     return lpDrv;
 114 }
 115
 116 /**************************************************************************
 117  *                              DRIVER_SendMessage              [internal]
 118  */
 119 static LRESULT inline DRIVER_SendMessage(LPWINE_DRIVER lpDrv, UINT16 msg,
 120                                          LPARAM lParam1, LPARAM lParam2)
 121 {
 122     TRACE("Before CallDriverProc proc=%p driverID=%08lx wMsg=%04x p1=%08lx p2=%08lx\n",
 123           lpDrv->lpDrvProc, lpDrv->dwDriverID, msg, lParam1, lParam2);
 124     return DRIVER_CallTo16_long_lwwll((FARPROC16)lpDrv->lpDrvProc, lpDrv->dwDriverID,
 125                                       lpDrv->hDriver16, msg, lParam1, lParam2);
 126 }
 127
 128 /**************************************************************************
 129  *              SendDriverMessage (USER.251)
 130  *              SendDriverMessage16 (USER32.@)
 131  */
 132 LRESULT WINAPI SendDriverMessage16(HDRVR16 hDriver, UINT16 msg, LPARAM lParam1,
 133                                    LPARAM lParam2)
 134 {
 135     LPWINE_DRIVER       lpDrv;
 136     LRESULT             retval = 0;
 137
 138     TRACE("(%04x, %04X, %08lX, %08lX)\n", hDriver, msg, lParam1, lParam2);
 139
 140     if ((lpDrv = DRIVER_FindFromHDrvr16(hDriver)) != NULL) {
 141         retval = DRIVER_SendMessage(lpDrv, msg, lParam1, lParam2);
 142     } else {
 143         WARN("Bad driver handle %u\n", hDriver);
 144     }
 145
 146     TRACE("retval = %ld\n", retval);
 147     return retval;
 148 }
 149
 150 /**************************************************************************
 151  *                              DRIVER_RemoveFromList           [internal]
 152  *
 153  * Generates all the logic to handle driver closure / deletion
 154  * Removes a driver struct to the list of open drivers.
 155  */
 156 static  BOOL    DRIVER_RemoveFromList(LPWINE_DRIVER lpDrv)
 157 {
 158     lpDrv->dwDriverID = 0;
 159     if (DRIVER_GetNumberOfModuleRefs(lpDrv) == 1) {
 160         DRIVER_SendMessage(lpDrv, DRV_DISABLE, 0L, 0L);
 161         DRIVER_SendMessage(lpDrv, DRV_FREE,    0L, 0L);
 162     }
 163
 164     if (lpDrv->lpPrevItem)
 165         lpDrv->lpPrevItem->lpNextItem = lpDrv->lpNextItem;
 166     else
 167         lpDrvItemList = lpDrv->lpNextItem;
 168     if (lpDrv->lpNextItem)
 169         lpDrv->lpNextItem->lpPrevItem = lpDrv->lpPrevItem;
 170
 171     return TRUE;
 172 }
 173
 174 /**************************************************************************
 175  *                              DRIVER_AddToList                [internal]
 176  *
 177  * Adds a driver struct to the list of open drivers.
 178  * Generates all the logic to handle driver creation / open.
 179  */
 180 static  BOOL    DRIVER_AddToList(LPWINE_DRIVER lpNewDrv, LPARAM lParam1, LPARAM lParam2)
 181 {
 182     /* First driver to be loaded for this module, need to load correctly the module */
 183     if (DRIVER_GetNumberOfModuleRefs(lpNewDrv) == 0) {
 184         if (DRIVER_SendMessage(lpNewDrv, DRV_LOAD, 0L, 0L) != DRV_SUCCESS) {
 185             TRACE("DRV_LOAD failed on driver 0x%08lx\n", (DWORD)lpNewDrv);
 186             return FALSE;
 187         }
 188         /* returned value is not checked */
 189         DRIVER_SendMessage(lpNewDrv, DRV_ENABLE, 0L, 0L);
 190     }
 191
 192     lpNewDrv->lpNextItem = NULL;
 193     if (lpDrvItemList == NULL) {
 194         lpDrvItemList = lpNewDrv;
 195         lpNewDrv->lpPrevItem = NULL;
 196     } else {
 197         LPWINE_DRIVER   lpDrv = lpDrvItemList;  /* find end of list */
 198         while (lpDrv->lpNextItem != NULL)
 199             lpDrv = lpDrv->lpNextItem;
 200
 201         lpDrv->lpNextItem = lpNewDrv;
 202         lpNewDrv->lpPrevItem = lpDrv;
 203     }
 204     /* Now just open a new instance of a driver on this module */
 205     lpNewDrv->dwDriverID = DRIVER_SendMessage(lpNewDrv, DRV_OPEN, lParam1, lParam2);
 206
 207     if (lpNewDrv->dwDriverID == 0) {
 208         TRACE("DRV_OPEN failed on driver 0x%08lx\n", (DWORD)lpNewDrv);
 209         DRIVER_RemoveFromList(lpNewDrv);
 210         return FALSE;
 211     }
 212
 213     return TRUE;
 214 }
 215
 216 /**************************************************************************
 217  *                              DRIVER_TryOpenDriver16          [internal]
 218  *
 219  * Tries to load a 16 bit driver whose DLL's (module) name is lpFileName.
 220  */
 221 static  LPWINE_DRIVER   DRIVER_TryOpenDriver16(LPCSTR lpFileName, LPARAM lParam2)
 222 {
 223     static      WORD    DRIVER_hDrvr16Counter /* = 0 */;
 224     LPWINE_DRIVER       lpDrv = NULL;
 225     HMODULE16           hModule;
 226     DRIVERPROC16        lpProc;
 227     LPCSTR              lpSFN;
 228     LPSTR               ptr;
 229
 230     TRACE("('%s', %08lX);\n", lpFileName, lParam2);
 231
 232     if (strlen(lpFileName) < 1) return lpDrv;
 233
 234     if ((lpSFN = strrchr(lpFileName, '\\')) == NULL)
 235         lpSFN = lpFileName;
 236     else
 237         lpSFN++;
 238     if ((ptr = strchr(lpFileName, ' ')) != NULL) {
 239         *ptr++ = '\0';
 240         while (*ptr == ' ') ptr++;
 241         if (*ptr == '\0') ptr = NULL;
 242     }
 243
 244     if ((hModule = LoadLibrary16(lpFileName)) < 32) goto exit;
 245     if ((lpProc = (DRIVERPROC16)GetProcAddress16(hModule, "DRIVERPROC")) == NULL)
 246         goto exit;
 247
 248     if ((lpDrv = HeapAlloc(GetProcessHeap(), 0, sizeof(WINE_DRIVER))) == NULL)
 249         goto exit;
 250
 251     lpDrv->dwDriverID  = 0;
 252     while (DRIVER_FindFromHDrvr16(++DRIVER_hDrvr16Counter));
 253     lpDrv->hDriver16   = DRIVER_hDrvr16Counter;
 254     lstrcpynA(lpDrv->szAliasName, lpSFN, sizeof(lpDrv->szAliasName));
 255     lpDrv->hModule16   = hModule;
 256     lpDrv->lpDrvProc   = lpProc;
 257
 258     if (!DRIVER_AddToList(lpDrv, (LPARAM)ptr, lParam2)) goto exit;
 259
 260     return lpDrv;
 261  exit:
 262     TRACE("Unable to load 16 bit module (%s): %04x\n", lpFileName, hModule);
 263     if (hModule >= 32)  FreeLibrary16(hModule);
 264     HeapFree(GetProcessHeap(), 0, lpDrv);
 265     return NULL;
 266 }
 267
 268 /**************************************************************************
 269  *              OpenDriver (USER.252)
 270  *              OpenDriver16 (USER32.@)
 271  */
 272 HDRVR16 WINAPI OpenDriver16(LPCSTR lpDriverName, LPCSTR lpSectionName, LPARAM lParam2)
 273 {
 274     LPWINE_DRIVER       lpDrv = NULL;
 275     char                drvName[128];
 276
 277     TRACE("(%s, %s, %08lX);\n", debugstr_a(lpDriverName), debugstr_a(lpSectionName), lParam2);
 278
 279     if (!lpDriverName || !*lpDriverName) return 0;
 280
 281     if (lpSectionName == NULL) {
 282         strcpy(drvName, lpDriverName);
 283
 284         if ((lpDrv = DRIVER_TryOpenDriver16(drvName, lParam2)))
 285             goto the_end;
 286         /* in case hDriver is NULL, search in Drivers section */
 287         lpSectionName = "Drivers";
 288     }
 289     if (GetPrivateProfileStringA(lpSectionName, lpDriverName, "",
 290                                  drvName, sizeof(drvName), "SYSTEM.INI") > 0) {
 291         lpDrv = DRIVER_TryOpenDriver16(drvName, lParam2);
 292     }
 293     if (!lpDrv) {
 294         TRACE("Failed to open driver %s from system.ini file, section %s\n", debugstr_a(lpDriverName), debugstr_a(lpSectionName));
 295         return 0;
 296     }
 297  the_end:
 298     TRACE("=> %04x / %08lx\n", lpDrv->hDriver16, (DWORD)lpDrv);
 299     return lpDrv->hDriver16;
 300 }
 301
 302 /**************************************************************************
 303  *              CloseDriver (USER.253)
 304  *              CloseDriver16 (USER32.@)
 305  */
 306 LRESULT WINAPI CloseDriver16(HDRVR16 hDrvr, LPARAM lParam1, LPARAM lParam2)
 307 {
 308     LPWINE_DRIVER       lpDrv;
 309
 310     TRACE("(%04x, %08lX, %08lX);\n", hDrvr, lParam1, lParam2);
 311
 312     if ((lpDrv = DRIVER_FindFromHDrvr16(hDrvr)) != NULL) {
 313         DRIVER_SendMessage(lpDrv, DRV_CLOSE, lParam1, lParam2);
 314
 315         if (DRIVER_RemoveFromList(lpDrv)) {
 316             HeapFree(GetProcessHeap(), 0, lpDrv);
 317             return TRUE;
 318         }
 319     }
 320     WARN("Failed to close driver\n");
 321     return FALSE;
 322 }
 323
 324 /**************************************************************************
 325  *              GetDriverModuleHandle (USER.254)
 326  *              GetDriverModuleHandle16 (USER32.@)
 327  */
 328 HMODULE16 WINAPI GetDriverModuleHandle16(HDRVR16 hDrvr)
 329 {
 330     LPWINE_DRIVER       lpDrv;
 331     HMODULE16           hModule = 0;
 332
 333     TRACE("(%04x);\n", hDrvr);
 334
 335     if ((lpDrv = DRIVER_FindFromHDrvr16(hDrvr)) != NULL) {
 336         hModule = lpDrv->hModule16;
 337     }
 338     TRACE("=> %04x\n", hModule);
 339     return hModule;
 340 }
 341
 342 /**************************************************************************
 343  *              DefDriverProc (USER.255)
 344  *              DefDriverProc16 (USER32.@)
 345  */
 346 LRESULT WINAPI DefDriverProc16(DWORD dwDevID, HDRVR16 hDriv, UINT16 wMsg,
 347                                LPARAM lParam1, LPARAM lParam2)
 348 {
 349     TRACE("devID=0x%08lx hDrv=0x%04x wMsg=%04x lP1=0x%08lx lP2=0x%08lx\n",
 350           dwDevID, hDriv, wMsg, lParam1, lParam2);
 351
 352     switch(wMsg) {
 353     case DRV_LOAD:
 354     case DRV_FREE:
 355     case DRV_ENABLE:
 356     case DRV_DISABLE:
 357         return (LRESULT)1L;
 358     case DRV_OPEN:
 359     case DRV_CLOSE:
 360     case DRV_QUERYCONFIGURE:
 361         return (LRESULT)0L;
 362     case DRV_CONFIGURE:
 363         MessageBoxA(0, "Driver isn't configurable !", "Wine Driver", MB_OK);
 364         return (LRESULT)0L;
 365     case DRV_INSTALL:
 366     case DRV_REMOVE:
 367         return DRV_SUCCESS;
 368     default:
 369         return (LRESULT)0L;
 370     }
 371 }
 372
 373 /**************************************************************************
 374  *              GetDriverInfo (USER.256)
 375  */
 376 BOOL16 WINAPI GetDriverInfo16(HDRVR16 hDrvr, LPDRIVERINFOSTRUCT16 lpDrvInfo)
 377 {
 378     LPWINE_DRIVER       lpDrv;
 379     BOOL16              ret = FALSE;
 380
 381     TRACE("(%04x, %p);\n", hDrvr, lpDrvInfo);
 382
 383     if (lpDrvInfo == NULL || lpDrvInfo->length != sizeof(DRIVERINFOSTRUCT16))
 384         return FALSE;
 385
 386     if ((lpDrv = DRIVER_FindFromHDrvr16(hDrvr)) != NULL) {
 387         lpDrvInfo->hDriver = lpDrv->hDriver16;
 388         lpDrvInfo->hModule = lpDrv->hModule16;
 389         lstrcpynA(lpDrvInfo->szAliasName, lpDrv->szAliasName, sizeof(lpDrvInfo->szAliasName));
 390         ret = TRUE;
 391     }
 392
 393     return ret;
 394 }
 395
 396 /**************************************************************************
 397  *              GetNextDriver (USER.257)
 398  */
 399 HDRVR16 WINAPI GetNextDriver16(HDRVR16 hDrvr, DWORD dwFlags)
 400 {
 401     HDRVR16             hRetDrv = 0;
 402     LPWINE_DRIVER       lpDrv;
 403
 404     TRACE("(%04x, %08lX);\n", hDrvr, dwFlags);
 405
 406     if (hDrvr == 0) {
 407         if (lpDrvItemList == NULL) {
 408             FIXME("drivers list empty !\n");
 409             /* FIXME: code was using DRIVER_LoadStartupDrivers(); before ?
 410              * I (EPP) don't quite understand this
 411              */
 412             if (lpDrvItemList == NULL)
 413                 return 0;
 414         }
 415         lpDrv = lpDrvItemList;
 416         if (dwFlags & GND_REVERSE) {
 417             while (lpDrv->lpNextItem)
 418                 lpDrv = lpDrv->lpNextItem;
 419         }
 420     } else {
 421         if ((lpDrv = DRIVER_FindFromHDrvr16(hDrvr)) != NULL) {
 422             if (dwFlags & GND_REVERSE) {
 423                 lpDrv = (lpDrv->lpPrevItem) ? lpDrv->lpPrevItem : NULL;
 424             } else {
 425                 lpDrv = (lpDrv->lpNextItem) ? lpDrv->lpNextItem : NULL;
 426             }
 427         }
 428     }
 429
 430     hRetDrv = (lpDrv) ? lpDrv->hDriver16 : (HDRVR16)0;
 431     TRACE("return %04x !\n", hRetDrv);
 432     return hRetDrv;
 433 }
 434