reactos/dll/win32/spoolss/router.c

   1 /*
   2  * Routing for Spooler-Service helper DLL
   3  *
   4  * Copyright 2006-2009 Detlef Riekenberg
   5  *
   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.
  10  *
  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.
  15  *
  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
  19  */
  20
  21 #include "spoolss.h"
  22
  23 #include <winreg.h>
  24 #include <wingdi.h>
  25 #include <winspool.h>
  26
  27 #include <ddk/winsplp.h>
  28
  29 /* ################################ */
  30
  31 #define MAX_BACKEND 3
  32
  33 typedef struct {
  34     /* PRINTPROVIDOR functions */
  35     DWORD  (WINAPI *fpOpenPrinter)(LPWSTR, HANDLE *, LPPRINTER_DEFAULTSW);
  36     DWORD  (WINAPI *fpSetJob)(HANDLE, DWORD, DWORD, LPBYTE, DWORD);
  37     DWORD  (WINAPI *fpGetJob)(HANDLE, DWORD, DWORD, LPBYTE, DWORD, LPDWORD);
  38     DWORD  (WINAPI *fpEnumJobs)(HANDLE, DWORD, DWORD, DWORD, LPBYTE, DWORD, LPDWORD, LPDWORD);
  39     HANDLE (WINAPI *fpAddPrinter)(LPWSTR, DWORD, LPBYTE);
  40     DWORD  (WINAPI *fpDeletePrinter)(HANDLE);
  41     DWORD  (WINAPI *fpSetPrinter)(HANDLE, DWORD, LPBYTE, DWORD);
  42     DWORD  (WINAPI *fpGetPrinter)(HANDLE, DWORD, LPBYTE, DWORD, LPDWORD);
  43     DWORD  (WINAPI *fpEnumPrinters)(DWORD, LPWSTR, DWORD, LPBYTE, DWORD, LPDWORD, LPDWORD);
  44     DWORD  (WINAPI *fpAddPrinterDriver)(LPWSTR, DWORD, LPBYTE);
  45     DWORD  (WINAPI *fpEnumPrinterDrivers)(LPWSTR, LPWSTR, DWORD, LPBYTE, DWORD, LPDWORD, LPDWORD);
  46     DWORD  (WINAPI *fpGetPrinterDriver)(HANDLE, LPWSTR, DWORD, LPBYTE, DWORD, LPDWORD);
  47     DWORD  (WINAPI *fpGetPrinterDriverDirectory)(LPWSTR, LPWSTR, DWORD, LPBYTE, DWORD, LPDWORD);
  48     DWORD  (WINAPI *fpDeletePrinterDriver)(LPWSTR, LPWSTR, LPWSTR);
  49     DWORD  (WINAPI *fpAddPrintProcessor)(LPWSTR, LPWSTR, LPWSTR, LPWSTR);
  50     DWORD  (WINAPI *fpEnumPrintProcessors)(LPWSTR, LPWSTR, DWORD, LPBYTE, DWORD, LPDWORD, LPDWORD);
  51     DWORD  (WINAPI *fpGetPrintProcessorDirectory)(LPWSTR, LPWSTR, DWORD, LPBYTE, DWORD, LPDWORD);
  52     DWORD  (WINAPI *fpDeletePrintProcessor)(LPWSTR, LPWSTR, LPWSTR);
  53     DWORD  (WINAPI *fpEnumPrintProcessorDatatypes)(LPWSTR, LPWSTR, DWORD, LPBYTE, DWORD, LPDWORD, LPDWORD);
  54     DWORD  (WINAPI *fpStartDocPrinter)(HANDLE, DWORD, LPBYTE);
  55     DWORD  (WINAPI *fpStartPagePrinter)(HANDLE);
  56     DWORD  (WINAPI *fpWritePrinter)(HANDLE, LPVOID, DWORD, LPDWORD);
  57     DWORD  (WINAPI *fpEndPagePrinter)(HANDLE);
  58     DWORD  (WINAPI *fpAbortPrinter)(HANDLE);
  59     DWORD  (WINAPI *fpReadPrinter)(HANDLE, LPVOID, DWORD, LPDWORD);
  60     DWORD  (WINAPI *fpEndDocPrinter)(HANDLE);
  61     DWORD  (WINAPI *fpAddJob)(HANDLE, DWORD, LPBYTE, DWORD, LPDWORD);
  62     DWORD  (WINAPI *fpScheduleJob)(HANDLE, DWORD);
  63     DWORD  (WINAPI *fpGetPrinterData)(HANDLE, LPWSTR, LPDWORD, LPBYTE, DWORD, LPDWORD);
  64     DWORD  (WINAPI *fpSetPrinterData)(HANDLE, LPWSTR, DWORD, LPBYTE, DWORD);
  65     DWORD  (WINAPI *fpWaitForPrinterChange)(HANDLE, DWORD);
  66     DWORD  (WINAPI *fpClosePrinter)(HANDLE);
  67     DWORD  (WINAPI *fpAddForm)(HANDLE, DWORD, LPBYTE);
  68     DWORD  (WINAPI *fpDeleteForm)(HANDLE, LPWSTR);
  69     DWORD  (WINAPI *fpGetForm)(HANDLE, LPWSTR, DWORD, LPBYTE, DWORD, LPDWORD);
  70     DWORD  (WINAPI *fpSetForm)(HANDLE, LPWSTR, DWORD, LPBYTE);
  71     DWORD  (WINAPI *fpEnumForms)(HANDLE, DWORD, LPBYTE, DWORD, LPDWORD, LPDWORD);
  72     DWORD  (WINAPI *fpEnumMonitors)(LPWSTR, DWORD, LPBYTE, DWORD, LPDWORD, LPDWORD);
  73     DWORD  (WINAPI *fpEnumPorts)(LPWSTR, DWORD, LPBYTE, DWORD, LPDWORD, LPDWORD);
  74     DWORD  (WINAPI *fpAddPort)(LPWSTR, HWND, LPWSTR);
  75     DWORD  (WINAPI *fpConfigurePort)(LPWSTR, HWND, LPWSTR);
  76     DWORD  (WINAPI *fpDeletePort)(LPWSTR, HWND, LPWSTR);
  77     HANDLE (WINAPI *fpCreatePrinterIC)(HANDLE, LPDEVMODEW);
  78     DWORD  (WINAPI *fpPlayGdiScriptOnPrinterIC)(HANDLE, LPBYTE, DWORD, LPBYTE, DWORD, DWORD);
  79     DWORD  (WINAPI *fpDeletePrinterIC)(HANDLE);
  80     DWORD  (WINAPI *fpAddPrinterConnection)(LPWSTR);
  81     DWORD  (WINAPI *fpDeletePrinterConnection)(LPWSTR);
  82     DWORD  (WINAPI *fpPrinterMessageBox)(HANDLE, DWORD, HWND, LPWSTR, LPWSTR, DWORD);
  83     DWORD  (WINAPI *fpAddMonitor)(LPWSTR, DWORD, LPBYTE);
  84     DWORD  (WINAPI *fpDeleteMonitor)(LPWSTR, LPWSTR, LPWSTR);
  85     DWORD  (WINAPI *fpResetPrinter)(HANDLE, LPPRINTER_DEFAULTSW);
  86     DWORD  (WINAPI *fpGetPrinterDriverEx)(HANDLE, LPWSTR, DWORD, LPBYTE, DWORD, LPDWORD, DWORD, DWORD, PDWORD, PDWORD);
  87     HANDLE (WINAPI *fpFindFirstPrinterChangeNotification)(HANDLE, DWORD, DWORD, LPVOID);
  88     DWORD  (WINAPI *fpFindClosePrinterChangeNotification)(HANDLE);
  89     DWORD  (WINAPI *fpAddPortEx)(HANDLE, LPWSTR, DWORD, LPBYTE, LPWSTR);
  90     DWORD  (WINAPI *fpShutDown)(LPVOID);
  91     DWORD  (WINAPI *fpRefreshPrinterChangeNotification)(HANDLE, DWORD, PVOID, PVOID);
  92     DWORD  (WINAPI *fpOpenPrinterEx)(LPWSTR, LPHANDLE, LPPRINTER_DEFAULTSW, LPBYTE, DWORD);
  93     HANDLE (WINAPI *fpAddPrinterEx)(LPWSTR, DWORD, LPBYTE, LPBYTE, DWORD);
  94     DWORD  (WINAPI *fpSetPort)(LPWSTR, LPWSTR, DWORD, LPBYTE);
  95     DWORD  (WINAPI *fpEnumPrinterData)(HANDLE, DWORD, LPWSTR, DWORD, LPDWORD, LPDWORD, LPBYTE, DWORD, LPDWORD);
  96     DWORD  (WINAPI *fpDeletePrinterData)(HANDLE, LPWSTR);
  97     DWORD  (WINAPI *fpClusterSplOpen)(LPCWSTR, LPCWSTR, PHANDLE, LPCWSTR, LPCWSTR);
  98     DWORD  (WINAPI *fpClusterSplClose)(HANDLE);
  99     DWORD  (WINAPI *fpClusterSplIsAlive)(HANDLE);
 100     DWORD  (WINAPI *fpSetPrinterDataEx)(HANDLE, LPCWSTR, LPCWSTR, DWORD, LPBYTE, DWORD);
 101     DWORD  (WINAPI *fpGetPrinterDataEx)(HANDLE, LPCWSTR, LPCWSTR, LPDWORD, LPBYTE, DWORD, LPDWORD);
 102     DWORD  (WINAPI *fpEnumPrinterDataEx)(HANDLE, LPCWSTR, LPBYTE, DWORD, LPDWORD, LPDWORD);
 103     DWORD  (WINAPI *fpEnumPrinterKey)(HANDLE, LPCWSTR, LPWSTR, DWORD, LPDWORD);
 104     DWORD  (WINAPI *fpDeletePrinterDataEx)(HANDLE, LPCWSTR, LPCWSTR);
 105     DWORD  (WINAPI *fpDeletePrinterKey)(HANDLE hPrinter, LPCWSTR pKeyName);
 106     DWORD  (WINAPI *fpSeekPrinter)(HANDLE, LARGE_INTEGER, PLARGE_INTEGER, DWORD, BOOL);
 107     DWORD  (WINAPI *fpDeletePrinterDriverEx)(LPWSTR, LPWSTR, LPWSTR, DWORD, DWORD);
 108     DWORD  (WINAPI *fpAddPerMachineConnection)(LPCWSTR, LPCWSTR, LPCWSTR, LPCWSTR);
 109     DWORD  (WINAPI *fpDeletePerMachineConnection)(LPCWSTR, LPCWSTR);
 110     DWORD  (WINAPI *fpEnumPerMachineConnections)(LPCWSTR, LPBYTE, DWORD, LPDWORD, LPDWORD);
 111     DWORD  (WINAPI *fpXcvData)(HANDLE, LPCWSTR, PBYTE, DWORD, PBYTE, DWORD, PDWORD, PDWORD);
 112     DWORD  (WINAPI *fpAddPrinterDriverEx)(LPWSTR, DWORD, LPBYTE, DWORD);
 113     DWORD  (WINAPI *fpSplReadPrinter)(HANDLE, LPBYTE *, DWORD);
 114     DWORD  (WINAPI *fpDriverUnloadComplete)(LPWSTR);
 115     DWORD  (WINAPI *fpGetSpoolFileInfo)(HANDLE, LPWSTR *, LPHANDLE, HANDLE, HANDLE);
 116     DWORD  (WINAPI *fpCommitSpoolData)(HANDLE, DWORD);
 117     DWORD  (WINAPI *fpCloseSpoolFileHandle)(HANDLE);
 118     DWORD  (WINAPI *fpFlushPrinter)(HANDLE, LPBYTE, DWORD, LPDWORD, DWORD);
 119     DWORD  (WINAPI *fpSendRecvBidiData)(HANDLE, LPCWSTR, LPBIDI_REQUEST_CONTAINER, LPBIDI_RESPONSE_CONTAINER *);
 120     DWORD  (WINAPI *fpAddDriverCatalog)(HANDLE, DWORD, VOID *, DWORD);
 121     /* Private Data */
 122     HMODULE dll;
 123     LPWSTR  dllname;
 124     LPWSTR  name;
 125     LPWSTR  regroot;
 126     DWORD   index;
 127 } backend_t;
 128
 129 /* ################################ */
 130
 131 static backend_t *backend[MAX_BACKEND];
 132 static DWORD used_backends = 0;
 133
 134 static CRITICAL_SECTION backend_cs;
 135 static CRITICAL_SECTION_DEBUG backend_cs_debug =
 136 {
 137     0, 0, &backend_cs,
 138     { &backend_cs_debug.ProcessLocksList, &backend_cs_debug.ProcessLocksList },
 139       0, 0, { (DWORD_PTR)(__FILE__ ": backend_cs") }
 140 };
 141 static CRITICAL_SECTION backend_cs = { &backend_cs_debug, -1, 0, 0, 0, 0 };
 142
 143 /* ################################ */
 144
 145 static WCHAR localsplW[] = {'l','o','c','a','l','s','p','l','.','d','l','l',0};
 146
 147 /******************************************************************
 148  * strdupW [internal]
 149  *
 150  * create a copy of a unicode-string
 151  *
 152  */
 153
 154 static LPWSTR strdupW(LPCWSTR p)
 155 {
 156     LPWSTR ret;
 157     DWORD len;
 158
 159     if(!p) return NULL;
 160     len = (lstrlenW(p) + 1) * sizeof(WCHAR);
 161     ret = heap_alloc(len);
 162     memcpy(ret, p, len);
 163     return ret;
 164 }
 165
 166 /******************************************************************
 167  * backend_unload_all [internal]
 168  *
 169  * unload all backends
 170  */
 171 void backend_unload_all(void)
 172 {
 173     EnterCriticalSection(&backend_cs);
 174     while (used_backends > 0) {
 175         used_backends--;
 176         FreeLibrary(backend[used_backends]->dll);
 177         heap_free(backend[used_backends]->dllname);
 178         heap_free(backend[used_backends]->name);
 179         heap_free(backend[used_backends]->regroot);
 180         heap_free(backend[used_backends]);
 181         backend[used_backends] = NULL;
 182     }
 183     LeaveCriticalSection(&backend_cs);
 184 }
 185
 186 /******************************************************************************
 187  * backend_load [internal]
 188  *
 189  * load and init a backend
 190  *
 191  * PARAMS
 192  *  name   [I] Printprovider to use for the backend. NULL for the local print provider
 193  *
 194  * RETURNS
 195  *  Success: PTR to the backend
 196  *  Failure: NULL
 197  *
 198  */
 199 static backend_t * backend_load(LPWSTR dllname, LPWSTR name, LPWSTR regroot)
 200 {
 201
 202     BOOL (WINAPI *pInitializePrintProvidor)(LPPRINTPROVIDOR, DWORD, LPWSTR);
 203     DWORD id;
 204     DWORD res;
 205
 206     TRACE("(%s, %s, %s)\n", debugstr_w(dllname), debugstr_w(name), debugstr_w(regroot));
 207
 208     EnterCriticalSection(&backend_cs);
 209     id = used_backends;
 210
 211     backend[id] = heap_alloc_zero(sizeof(backend_t));
 212     if (!backend[id]) {
 213         LeaveCriticalSection(&backend_cs);
 214         return NULL;
 215     }
 216
 217     backend[id]->dllname = strdupW(dllname);
 218     backend[id]->name = strdupW(name);
 219     backend[id]->regroot = strdupW(regroot);
 220
 221     backend[id]->dll = LoadLibraryW(dllname);
 222     if (backend[id]->dll) {
 223         pInitializePrintProvidor = (void *) GetProcAddress(backend[id]->dll, "InitializePrintProvidor");
 224         if (pInitializePrintProvidor) {
 225
 226             /* native localspl does not clear unused entries */
 227             res = pInitializePrintProvidor((PRINTPROVIDOR *) backend[id], sizeof(PRINTPROVIDOR), regroot);
 228             if (res) {
 229                 used_backends++;
 230                 backend[id]->index = used_backends;
 231                 LeaveCriticalSection(&backend_cs);
 232                 TRACE("--> backend #%d: %p (%s)\n", id, backend[id], debugstr_w(dllname));
 233                 return backend[id];
 234             }
 235         }
 236         FreeLibrary(backend[id]->dll);
 237     }
 238     heap_free(backend[id]->dllname);
 239     heap_free(backend[id]->name);
 240     heap_free(backend[id]->regroot);
 241     heap_free(backend[id]);
 242     backend[id] = NULL;
 243     LeaveCriticalSection(&backend_cs);
 244     WARN("failed to init %s: %u\n", debugstr_w(dllname), GetLastError());
 245     return NULL;
 246 }
 247
 248 /******************************************************************************
 249  * backend_load_all [internal]
 250  *
 251  * load and init all backends
 252  *
 253  * RETURNS
 254  *  Success: TRUE
 255  *  Failure: FALSE
 256  *
 257  */
 258 BOOL backend_load_all(void)
 259 {
 260     static BOOL failed = FALSE;
 261
 262     EnterCriticalSection(&backend_cs);
 263
 264     /* if we failed before, don't try again */
 265     if (!failed && (used_backends == 0)) {
 266         backend_load(localsplW, NULL, NULL);
 267
 268         /* ToDo: parse the registry and load all other backends */
 269
 270         failed = (used_backends == 0);
 271     }
 272     LeaveCriticalSection(&backend_cs);
 273     TRACE("-> %d\n", !failed);
 274     return (!failed);
 275 }
 276
 277 /******************************************************************************
 278  * backend_first [internal]
 279  *
 280  * find the first usable backend
 281  *
 282  * RETURNS
 283  *  Success: PTR to the backend
 284  *  Failure: NULL
 285  *
 286  */
 287 static backend_t * backend_first(LPWSTR name)
 288 {
 289
 290     EnterCriticalSection(&backend_cs);
 291     /* Load all backends, when not done yet */
 292     if (used_backends || backend_load_all()) {
 293
 294         /* test for the local system first */
 295         if (!name || !name[0]) {
 296             LeaveCriticalSection(&backend_cs);
 297             return backend[0];
 298         }
 299     }
 300
 301     FIXME("server %s not supported in %d backends\n", debugstr_w(name), used_backends);
 302     LeaveCriticalSection(&backend_cs);
 303     return NULL;
 304 }
 305
 306 /******************************************************************
 307  * AddMonitorW (spoolss.@)
 308  *
 309  * Install a Printmonitor
 310  *
 311  * PARAMS
 312  *  pName       [I] Servername or NULL (local Computer)
 313  *  Level       [I] Structure-Level (Must be 2)
 314  *  pMonitors   [I] PTR to MONITOR_INFO_2
 315  *
 316  * RETURNS
 317  *  Success: TRUE
 318  *  Failure: FALSE
 319  *
 320  * NOTES
 321  *  All Files for the Monitor must already be copied to %winsysdir% ("%SystemRoot%\system32")
 322  *
 323  */
 324 BOOL WINAPI AddMonitorW(LPWSTR pName, DWORD Level, LPBYTE pMonitors)
 325 {
 326     backend_t * pb;
 327     DWORD res = ROUTER_UNKNOWN;
 328
 329     TRACE("(%s, %d, %p)\n", debugstr_w(pName), Level, pMonitors);
 330
 331     if (Level != 2) {
 332         SetLastError(ERROR_INVALID_LEVEL);
 333         return FALSE;
 334     }
 335
 336     pb = backend_first(pName);
 337     if (pb && pb->fpAddMonitor)
 338         res = pb->fpAddMonitor(pName, Level, pMonitors);
 339     else
 340     {
 341         SetLastError(ERROR_PROC_NOT_FOUND);
 342     }
 343
 344     TRACE("got %u with %u\n", res, GetLastError());
 345     return (res == ROUTER_SUCCESS);
 346 }
 347
 348 /******************************************************************
 349  * AddPrinterDriverExW (spoolss.@)
 350  *
 351  * Install a Printer Driver with the Option to upgrade / downgrade the Files
 352  *
 353  * PARAMS
 354  *  pName           [I] Servername or NULL (local Computer)
 355  *  level           [I] Level for the supplied DRIVER_INFO_*W struct
 356  *  pDriverInfo     [I] PTR to DRIVER_INFO_*W struct with the Driver Parameter
 357  *  dwFileCopyFlags [I] How to Copy / Upgrade / Downgrade the needed Files
 358  *
 359  * RESULTS
 360  *  Success: TRUE
 361  *  Failure: FALSE
 362  *
 363  */
 364 BOOL WINAPI AddPrinterDriverExW(LPWSTR pName, DWORD level, LPBYTE pDriverInfo, DWORD dwFileCopyFlags)
 365 {
 366     backend_t * pb;
 367     DWORD res = ROUTER_UNKNOWN;
 368
 369     TRACE("(%s, %d, %p, 0x%x)\n", debugstr_w(pName), level, pDriverInfo, dwFileCopyFlags);
 370
 371     if (!pDriverInfo) {
 372         SetLastError(ERROR_INVALID_PARAMETER);
 373         return FALSE;
 374     }
 375
 376     pb = backend_first(pName);
 377     if (pb && pb->fpAddPrinterDriverEx)
 378         res = pb->fpAddPrinterDriverEx(pName, level, pDriverInfo, dwFileCopyFlags);
 379     else
 380     {
 381         SetLastError(ERROR_PROC_NOT_FOUND);
 382     }
 383
 384     TRACE("got %u with %u\n", res, GetLastError());
 385     return (res == ROUTER_SUCCESS);
 386 }
 387
 388 /******************************************************************
 389  * DeleteMonitorW (spoolss.@)
 390  *
 391  * Delete a specific Printmonitor from a Printing-Environment
 392  *
 393  * PARAMS
 394  *  pName        [I] Servername or NULL (local Computer)
 395  *  pEnvironment [I] Printing-Environment of the Monitor or NULL (Default)
 396  *  pMonitorName [I] Name of the Monitor, that should be deleted
 397  *
 398  * RETURNS
 399  *  Success: TRUE
 400  *  Failure: FALSE
 401  *
 402  */
 403 BOOL WINAPI DeleteMonitorW(LPWSTR pName, LPWSTR pEnvironment, LPWSTR pMonitorName)
 404 {
 405     backend_t * pb;
 406     DWORD res = ROUTER_UNKNOWN;
 407
 408     TRACE("(%s, %s, %s)\n", debugstr_w(pName), debugstr_w(pEnvironment), debugstr_w(pMonitorName));
 409
 410     pb = backend_first(pName);
 411     if (pb && pb->fpDeleteMonitor)
 412         res = pb->fpDeleteMonitor(pName, pEnvironment, pMonitorName);
 413     else
 414     {
 415         SetLastError(ERROR_PROC_NOT_FOUND);
 416     }
 417
 418     TRACE("got %u with %u\n", res, GetLastError());
 419     return (res == ROUTER_SUCCESS);
 420 }
 421
 422 /******************************************************************
 423  * EnumMonitorsW (spoolss.@)
 424  *
 425  * Enumerate available Port-Monitors
 426  *
 427  * PARAMS
 428  *  pName      [I] Servername or NULL (local Computer)
 429  *  Level      [I] Structure-Level
 430  *  pMonitors  [O] PTR to Buffer that receives the Result
 431  *  cbBuf      [I] Size of Buffer at pMonitors
 432  *  pcbNeeded  [O] PTR to DWORD that receives the size in Bytes used / required for pMonitors
 433  *  pcReturned [O] PTR to DWORD that receives the number of Monitors in pMonitors
 434  *
 435  * RETURNS
 436  *  Success: TRUE
 437  *  Failure: FALSE and in pcbNeeded the Bytes required for pMonitors, if cbBuf is too small
 438  *
 439  */
 440 BOOL WINAPI EnumMonitorsW(LPWSTR pName, DWORD Level, LPBYTE pMonitors, DWORD cbBuf,
 441                           LPDWORD pcbNeeded, LPDWORD pcReturned)
 442 {
 443     backend_t * pb;
 444     DWORD res = ROUTER_UNKNOWN;
 445
 446     TRACE("(%s, %d, %p, %d, %p, %p)\n", debugstr_w(pName), Level, pMonitors,
 447           cbBuf, pcbNeeded, pcReturned);
 448
 449     if (pcbNeeded) *pcbNeeded = 0;
 450     if (pcReturned) *pcReturned = 0;
 451
 452     pb = backend_first(pName);
 453     if (pb && pb->fpEnumMonitors)
 454         res = pb->fpEnumMonitors(pName, Level, pMonitors, cbBuf, pcbNeeded, pcReturned);
 455     else
 456     {
 457         SetLastError(ERROR_PROC_NOT_FOUND);
 458     }
 459
 460     TRACE("got %u with %u (%u byte for %u entries)\n\n", res, GetLastError(),
 461             pcbNeeded ? *pcbNeeded : 0, pcReturned ? *pcReturned : 0);
 462
 463     return (res == ROUTER_SUCCESS);
 464 }
 465
 466 /******************************************************************
 467  * EnumPortsW (spoolss.@)
 468  *
 469  * Enumerate available Ports
 470  *
 471  * PARAMS
 472  *  pName      [I] Servername or NULL (local Computer)
 473  *  Level      [I] Structure-Level (1 or 2)
 474  *  pPorts     [O] PTR to Buffer that receives the Result
 475  *  cbBuf      [I] Size of Buffer at pPorts
 476  *  pcbNeeded  [O] PTR to DWORD that receives the size in Bytes used / required for pPorts
 477  *  pcReturned [O] PTR to DWORD that receives the number of Ports in pPorts
 478  *
 479  * RETURNS
 480  *  Success: TRUE
 481  *  Failure: FALSE and in pcbNeeded the Bytes required for pPorts, if cbBuf is too small
 482  *
 483  */
 484 BOOL WINAPI EnumPortsW(LPWSTR pName, DWORD Level, LPBYTE pPorts, DWORD cbBuf,
 485                        LPDWORD pcbNeeded, LPDWORD pcReturned)
 486 {
 487     backend_t * pb;
 488     DWORD res = ROUTER_UNKNOWN;
 489
 490     TRACE("(%s, %d, %p, %d, %p, %p)\n", debugstr_w(pName), Level, pPorts, cbBuf,
 491             pcbNeeded, pcReturned);
 492
 493     if (pcbNeeded) *pcbNeeded = 0;
 494     if (pcReturned) *pcReturned = 0;
 495
 496     pb = backend_first(pName);
 497     if (pb && pb->fpEnumPorts)
 498         res = pb->fpEnumPorts(pName, Level, pPorts, cbBuf, pcbNeeded, pcReturned);
 499     else
 500     {
 501         SetLastError(ERROR_PROC_NOT_FOUND);
 502     }
 503
 504     TRACE("got %u with %u (%u byte for %u entries)\n", res, GetLastError(),
 505             pcbNeeded ? *pcbNeeded : 0, pcReturned ? *pcReturned : 0);
 506
 507     return (res == ROUTER_SUCCESS);
 508 }
 509
 510 /******************************************************************
 511  * GetPrinterDriverDirectoryW (spoolss.@)
 512  *
 513  * Return the PATH for the Printer-Drivers
 514  *
 515  * PARAMS
 516  *   pName            [I] Servername or NULL (local Computer)
 517  *   pEnvironment     [I] Printing-Environment or NULL (Default)
 518  *   Level            [I] Structure-Level (must be 1)
 519  *   pDriverDirectory [O] PTR to Buffer that receives the Result
 520  *   cbBuf            [I] Size of Buffer at pDriverDirectory
 521  *   pcbNeeded        [O] PTR to DWORD that receives the size in Bytes used /
 522  *                        required for pDriverDirectory
 523  *
 524  * RETURNS
 525  *   Success: TRUE  and in pcbNeeded the Bytes used in pDriverDirectory
 526  *   Failure: FALSE and in pcbNeeded the Bytes required for pDriverDirectory,
 527  *   if cbBuf is too small
 528  *
 529  *   Native Values returned in pDriverDirectory on Success:
 530  *|  NT(Windows NT x86): "%winsysdir%\\spool\\DRIVERS\\w32x86"
 531  *|  NT(Windows x64):    "%winsysdir%\\spool\\DRIVERS\\x64"
 532  *|  NT(Windows 4.0):    "%winsysdir%\\spool\\DRIVERS\\win40"
 533  *|  win9x(Windows 4.0): "%winsysdir%"
 534  *
 535  *   "%winsysdir%" is the Value from GetSystemDirectoryW()
 536  *
 537  */
 538 BOOL WINAPI GetPrinterDriverDirectoryW(LPWSTR pName, LPWSTR pEnvironment,
 539             DWORD Level, LPBYTE pDriverDirectory, DWORD cbBuf, LPDWORD pcbNeeded)
 540 {
 541     backend_t * pb;
 542     DWORD res = ROUTER_UNKNOWN;
 543
 544     TRACE("(%s, %s, %d, %p, %d, %p)\n", debugstr_w(pName),
 545           debugstr_w(pEnvironment), Level, pDriverDirectory, cbBuf, pcbNeeded);
 546
 547     if (pcbNeeded) *pcbNeeded = 0;
 548
 549     pb = backend_first(pName);
 550     if (pb && pb->fpGetPrinterDriverDirectory)
 551         res = pb->fpGetPrinterDriverDirectory(pName, pEnvironment, Level,
 552                                               pDriverDirectory, cbBuf, pcbNeeded);
 553     else
 554     {
 555         SetLastError(ERROR_PROC_NOT_FOUND);
 556     }
 557
 558     TRACE("got %u with %u (%u byte)\n",
 559             res, GetLastError(), pcbNeeded ? *pcbNeeded : 0);
 560
 561     return (res == ROUTER_SUCCESS);
 562
 563 }