src/sys/pioctl_nt.c

   1 /*
   2  * Copyright 2000, International Business Machines Corporation and others.
   3  * All Rights Reserved.
   4  *
   5  * This software has been released under the terms of the IBM Public
   6  * License.  For details, see the LICENSE file in the top-level source
   7  * directory or online at http://www.openafs.org/dl/license10.html
   8  */
   9
  10 #include <afsconfig.h>
  11 #include <afs/param.h>
  12
  13 RCSID
  14     ("$Header$");
  15
  16 #include <afs/stds.h>
  17 #include <windows.h>
  18 #include <stdlib.h>
  19 #include <stdio.h>
  20 #include <errno.h>
  21 #include <malloc.h>
  22 #include <string.h>
  23 #include <winioctl.h>
  24 #include <winsock2.h>
  25 #define SECURITY_WIN32
  26 #include <security.h>
  27 #include <nb30.h>
  28
  29 #include <osi.h>
  30
  31 #include <cm.h>
  32 #include <cm_nls.h>
  33 #include <cm_server.h>
  34 #include <cm_cell.h>
  35 #include <cm_user.h>
  36 #include <cm_conn.h>
  37 #include <cm_scache.h>
  38 #include <cm_buf.h>
  39 #include <cm_dir.h>
  40 #include <cm_utils.h>
  41 #include <cm_ioctl.h>
  42
  43 #include <smb.h>
  44 #include <pioctl_nt.h>
  45 #include <WINNT/afsreg.h>
  46 #include <lanahelper.h>
  47
  48 #include <loadfuncs-krb5.h>
  49 #include <krb5.h>
  50
  51 static char AFSConfigKeyName[] = AFSREG_CLT_SVC_PARAM_SUBKEY;
  52
  53 static const char utf8_prefix[] = UTF8_PREFIX;
  54 static const int  utf8_prefix_size = sizeof(utf8_prefix) -  sizeof(char);
  55
  56 #define FS_IOCTLREQUEST_MAXSIZE 8192
  57 /* big structure for representing and storing an IOCTL request */
  58 typedef struct fs_ioctlRequest {
  59     char *mp;                   /* marshalling/unmarshalling ptr */
  60     long nbytes;                /* bytes received (when unmarshalling) */
  61     char data[FS_IOCTLREQUEST_MAXSIZE]; /* data we're marshalling */
  62 } fs_ioctlRequest_t;
  63
  64 static int
  65 CMtoUNIXerror(int cm_code)
  66 {
  67     switch (cm_code) {
  68     case CM_ERROR_TIMEDOUT:
  69         return ETIMEDOUT;
  70     case CM_ERROR_NOACCESS:
  71         return EACCES;
  72     case CM_ERROR_NOSUCHFILE:
  73     case CM_ERROR_NOSUCHPATH:
  74     case CM_ERROR_BPLUS_NOMATCH:
  75         return ENOENT;
  76     case CM_ERROR_INVAL:
  77         return EINVAL;
  78     case CM_ERROR_BADFD:
  79         return EBADF;
  80     case CM_ERROR_EXISTS:
  81     case CM_ERROR_INEXACT_MATCH:
  82         return EEXIST;
  83     case CM_ERROR_CROSSDEVLINK:
  84         return EXDEV;
  85     case CM_ERROR_NOTDIR:
  86         return ENOTDIR;
  87     case CM_ERROR_ISDIR:
  88         return EISDIR;
  89     case CM_ERROR_READONLY:
  90         return EROFS;
  91     case CM_ERROR_WOULDBLOCK:
  92         return EWOULDBLOCK;
  93     case CM_ERROR_NOSUCHCELL:
  94         return ESRCH;           /* hack */
  95     case CM_ERROR_NOSUCHVOLUME:
  96         return EPIPE;           /* hack */
  97     case CM_ERROR_NOMORETOKENS:
  98         return EDOM;            /* hack */
  99     case CM_ERROR_TOOMANYBUFS:
 100         return EFBIG;           /* hack */
 101     case CM_ERROR_ALLBUSY:
 102         return EBUSY;
 103     case CM_ERROR_ALLDOWN:
 104         return ENOSYS;          /* hack */
 105     case CM_ERROR_ALLOFFLINE:
 106         return ENXIO;           /* hack */
 107     default:
 108         if (cm_code > 0 && cm_code < EILSEQ)
 109             return cm_code;
 110         else
 111             return ENOTTY;
 112     }
 113 }
 114
 115 static void
 116 InitFSRequest(fs_ioctlRequest_t * rp)
 117 {
 118     rp->mp = rp->data;
 119     rp->nbytes = 0;
 120 }
 121
 122 static BOOL
 123 IoctlDebug(void)
 124 {
 125     static int init = 0;
 126     static BOOL debug = 0;
 127
 128     if ( !init ) {
 129         HKEY hk;
 130
 131         if (RegOpenKey (HKEY_LOCAL_MACHINE,
 132                          TEXT("Software\\OpenAFS\\Client"), &hk) == 0)
 133         {
 134             DWORD dwSize = sizeof(BOOL);
 135             DWORD dwType = REG_DWORD;
 136             RegQueryValueEx (hk, TEXT("IoctlDebug"), NULL, &dwType, (PBYTE)&debug, &dwSize);
 137             RegCloseKey (hk);
 138         }
 139
 140         init = 1;
 141     }
 142
 143     return debug;
 144 }
 145
 146 static BOOL
 147 DisableServiceManagerCheck(void)
 148 {
 149     static int init = 0;
 150     static BOOL smcheck = 0;
 151
 152     if ( !init ) {
 153         HKEY hk;
 154
 155         if (RegOpenKey (HKEY_LOCAL_MACHINE,
 156                          TEXT("Software\\OpenAFS\\Client"), &hk) == 0)
 157         {
 158             DWORD dwSize = sizeof(BOOL);
 159             DWORD dwType = REG_DWORD;
 160             RegQueryValueEx (hk, TEXT("DisableIoctlSMCheck"), NULL, &dwType, (PBYTE)&smcheck, &dwSize);
 161             RegCloseKey (hk);
 162         }
 163
 164         init = 1;
 165     }
 166
 167     return smcheck;
 168 }
 169
 170 static DWORD
 171 GetServiceStatus(
 172     LPSTR lpszMachineName,
 173     LPSTR lpszServiceName,
 174     DWORD *lpdwCurrentState)
 175 {
 176     DWORD           hr               = NOERROR;
 177     SC_HANDLE       schSCManager     = NULL;
 178     SC_HANDLE       schService       = NULL;
 179     DWORD           fdwDesiredAccess = 0;
 180     SERVICE_STATUS  ssServiceStatus  = {0};
 181     BOOL            fRet             = FALSE;
 182
 183     *lpdwCurrentState = 0;
 184
 185     fdwDesiredAccess = GENERIC_READ;
 186
 187     schSCManager = OpenSCManager(lpszMachineName,
 188                                  NULL,
 189                                  fdwDesiredAccess);
 190
 191     if(schSCManager == NULL)
 192     {
 193         hr = GetLastError();
 194         goto cleanup;
 195     }
 196
 197     schService = OpenService(schSCManager,
 198                              lpszServiceName,
 199                              fdwDesiredAccess);
 200
 201     if(schService == NULL)
 202     {
 203         hr = GetLastError();
 204         goto cleanup;
 205     }
 206
 207     fRet = QueryServiceStatus(schService,
 208                               &ssServiceStatus);
 209
 210     if(fRet == FALSE)
 211     {
 212         hr = GetLastError();
 213         goto cleanup;
 214     }
 215
 216     *lpdwCurrentState = ssServiceStatus.dwCurrentState;
 217
 218 cleanup:
 219
 220     CloseServiceHandle(schService);
 221     CloseServiceHandle(schSCManager);
 222
 223     return(hr);
 224 }
 225
 226 // krb5 functions
 227 DECL_FUNC_PTR(krb5_cc_default_name);
 228 DECL_FUNC_PTR(krb5_cc_set_default_name);
 229 DECL_FUNC_PTR(krb5_get_default_config_files);
 230 DECL_FUNC_PTR(krb5_free_config_files);
 231 DECL_FUNC_PTR(krb5_free_context);
 232 DECL_FUNC_PTR(krb5_get_default_realm);
 233 DECL_FUNC_PTR(krb5_free_default_realm);
 234 DECL_FUNC_PTR(krb5_init_context);
 235 DECL_FUNC_PTR(krb5_cc_default);
 236 DECL_FUNC_PTR(krb5_parse_name);
 237 DECL_FUNC_PTR(krb5_free_principal);
 238 DECL_FUNC_PTR(krb5_cc_close);
 239 DECL_FUNC_PTR(krb5_cc_get_principal);
 240 DECL_FUNC_PTR(krb5_build_principal);
 241 DECL_FUNC_PTR(krb5_c_random_make_octets);
 242 DECL_FUNC_PTR(krb5_get_init_creds_password);
 243 DECL_FUNC_PTR(krb5_free_cred_contents);
 244 DECL_FUNC_PTR(krb5_cc_resolve);
 245 DECL_FUNC_PTR(krb5_unparse_name);
 246 DECL_FUNC_PTR(krb5_free_unparsed_name);
 247
 248 FUNC_INFO krb5_fi[] = {
 249     MAKE_FUNC_INFO(krb5_cc_default_name),
 250     MAKE_FUNC_INFO(krb5_cc_set_default_name),
 251     MAKE_FUNC_INFO(krb5_get_default_config_files),
 252     MAKE_FUNC_INFO(krb5_free_config_files),
 253     MAKE_FUNC_INFO(krb5_free_context),
 254     MAKE_FUNC_INFO(krb5_get_default_realm),
 255     MAKE_FUNC_INFO(krb5_free_default_realm),
 256     MAKE_FUNC_INFO(krb5_init_context),
 257     MAKE_FUNC_INFO(krb5_cc_default),
 258     MAKE_FUNC_INFO(krb5_parse_name),
 259     MAKE_FUNC_INFO(krb5_free_principal),
 260     MAKE_FUNC_INFO(krb5_cc_close),
 261     MAKE_FUNC_INFO(krb5_cc_get_principal),
 262     MAKE_FUNC_INFO(krb5_build_principal),
 263     MAKE_FUNC_INFO(krb5_c_random_make_octets),
 264     MAKE_FUNC_INFO(krb5_get_init_creds_password),
 265     MAKE_FUNC_INFO(krb5_free_cred_contents),
 266     MAKE_FUNC_INFO(krb5_cc_resolve),
 267     MAKE_FUNC_INFO(krb5_unparse_name),
 268     MAKE_FUNC_INFO(krb5_free_unparsed_name),
 269     END_FUNC_INFO
 270 };
 271
 272 static int
 273 LoadFuncs(
 274     const char* dll_name,
 275     FUNC_INFO fi[],
 276     HINSTANCE* ph,  // [out, optional] - DLL handle
 277     int* pindex,    // [out, optional] - index of last func loaded (-1 if none)
 278     int cleanup,    // cleanup function pointers and unload on error
 279     int go_on,      // continue loading even if some functions cannot be loaded
 280     int silent      // do not pop-up a system dialog if DLL cannot be loaded
 281     )
 282 {
 283     HINSTANCE h;
 284     int i, n, last_i;
 285     int error = 0;
 286     UINT em;
 287
 288     if (ph) *ph = 0;
 289     if (pindex) *pindex = -1;
 290
 291     for (n = 0; fi[n].func_ptr_var; n++)
 292         *(fi[n].func_ptr_var) = 0;
 293
 294     if (silent)
 295         em = SetErrorMode(SEM_FAILCRITICALERRORS);
 296     h = LoadLibrary(dll_name);
 297     if (silent)
 298         SetErrorMode(em);
 299
 300     if (!h)
 301         return 0;
 302
 303     last_i = -1;
 304     for (i = 0; (go_on || !error) && (i < n); i++)
 305     {
 306         void* p = (void*)GetProcAddress(h, fi[i].func_name);
 307         if (!p)
 308             error = 1;
 309         else
 310         {
 311             last_i = i;
 312             *(fi[i].func_ptr_var) = p;
 313         }
 314     }
 315     if (pindex) *pindex = last_i;
 316     if (error && cleanup && !go_on) {
 317         for (i = 0; i < n; i++) {
 318             *(fi[i].func_ptr_var) = 0;
 319         }
 320         FreeLibrary(h);
 321         return 0;
 322     }
 323     if (ph) *ph = h;
 324     if (error) return 0;
 325     return 1;
 326 }
 327 #if defined(_IA64_) || defined(_AMD64_)
 328 #define KERB5DLL "krb5_64.dll"
 329 #else
 330 #define KERB5DLL "krb5_32.dll"
 331 #endif
 332 static BOOL
 333 IsKrb5Available()
 334 {
 335     static HINSTANCE hKrb5DLL = 0;
 336
 337     if ( hKrb5DLL )
 338         return TRUE;
 339
 340     hKrb5DLL = LoadLibrary(KERB5DLL);
 341     if (hKrb5DLL) {
 342         if (!LoadFuncs(KERB5DLL, krb5_fi, 0, 0, 1, 0, 0))
 343         {
 344             FreeLibrary(hKrb5DLL);
 345             hKrb5DLL = 0;
 346             return FALSE;
 347         }
 348         return TRUE;
 349     }
 350     return FALSE;
 351 }
 352
 353 static BOOL
 354 GetLSAPrincipalName(char * szUser, DWORD *dwSize)
 355 {
 356     krb5_context   ctx = 0;
 357     krb5_error_code code;
 358     krb5_ccache mslsa_ccache=0;
 359     krb5_principal princ = 0;
 360     char * pname = 0;
 361     BOOL success = 0;
 362
 363     if (!IsKrb5Available())
 364         return FALSE;
 365
 366     if (code = pkrb5_init_context(&ctx))
 367         goto cleanup;
 368
 369     if (code = pkrb5_cc_resolve(ctx, "MSLSA:", &mslsa_ccache))
 370         goto cleanup;
 371
 372     if (code = pkrb5_cc_get_principal(ctx, mslsa_ccache, &princ))
 373         goto cleanup;
 374
 375     if (code = pkrb5_unparse_name(ctx, princ, &pname))
 376         goto cleanup;
 377
 378     if ( strlen(pname) < *dwSize ) {
 379         strncpy(szUser, pname, *dwSize);
 380         szUser[*dwSize-1] = '\0';
 381         success = 1;
 382     }
 383     *dwSize = (DWORD)strlen(pname);
 384
 385   cleanup:
 386     if (pname)
 387         pkrb5_free_unparsed_name(ctx, pname);
 388
 389     if (princ)
 390         pkrb5_free_principal(ctx, princ);
 391
 392     if (mslsa_ccache)
 393         pkrb5_cc_close(ctx, mslsa_ccache);
 394
 395     if (ctx)
 396         pkrb5_free_context(ctx);
 397     return success;
 398 }
 399
 400 static BOOL
 401 DriveIsMappedToAFS(char *drivestr, char *NetbiosName)
 402 {
 403     DWORD dwResult, dwResultEnum;
 404     HANDLE hEnum;
 405     DWORD cbBuffer = 16384;     // 16K is a good size
 406     DWORD cEntries = -1;        // enumerate all possible entries
 407     LPNETRESOURCE lpnrLocal;    // pointer to enumerated structures
 408     DWORD i;
 409     BOOL  bIsAFS = FALSE;
 410
 411     //
 412     // Call the WNetOpenEnum function to begin the enumeration.
 413     //
 414     dwResult = WNetOpenEnum(RESOURCE_CONNECTED,
 415                             RESOURCETYPE_DISK,
 416                             RESOURCEUSAGE_ALL,
 417                             NULL,       // NULL first time the function is called
 418                             &hEnum);    // handle to the resource
 419
 420     if (dwResult != NO_ERROR)
 421         return FALSE;
 422
 423     //
 424     // Call the GlobalAlloc function to allocate resources.
 425     //
 426     lpnrLocal = (LPNETRESOURCE) GlobalAlloc(GPTR, cbBuffer);
 427     if (lpnrLocal == NULL)
 428         return FALSE;
 429
 430     do {
 431         //
 432         // Initialize the buffer.
 433         //
 434         ZeroMemory(lpnrLocal, cbBuffer);
 435         //
 436         // Call the WNetEnumResource function to continue
 437         //  the enumeration.
 438         //
 439         cEntries = -1;
 440         dwResultEnum = WNetEnumResource(hEnum,          // resource handle
 441                                         &cEntries,      // defined locally as -1
 442                                         lpnrLocal,      // LPNETRESOURCE
 443                                         &cbBuffer);     // buffer size
 444         //
 445         // If the call succeeds, loop through the structures.
 446         //
 447         if (dwResultEnum == NO_ERROR) {
 448             for (i = 0; i < cEntries; i++) {
 449                 if (toupper(lpnrLocal[i].lpLocalName[0]) == toupper(drivestr[0])) {
 450                     //
 451                     // Skip the two backslashes at the start of the UNC device name
 452                     //
 453                     if ( _strnicmp( &(lpnrLocal[i].lpRemoteName[2]), NetbiosName, strlen(NetbiosName)) == 0 )
 454                     {
 455                         bIsAFS = TRUE;
 456                         break;
 457                     }
 458                 }
 459             }
 460         }
 461         // Process errors.
 462         //
 463         else if (dwResultEnum != ERROR_NO_MORE_ITEMS)
 464             break;
 465     }
 466     while (dwResultEnum != ERROR_NO_MORE_ITEMS);
 467
 468     //
 469     // Call the GlobalFree function to free the memory.
 470     //
 471     GlobalFree((HGLOBAL) lpnrLocal);
 472     //
 473     // Call WNetCloseEnum to end the enumeration.
 474     //
 475     dwResult = WNetCloseEnum(hEnum);
 476
 477     return bIsAFS;
 478 }
 479
 480 static long
 481 GetIoctlHandle(char *fileNamep, HANDLE * handlep)
 482 {
 483     char *drivep = NULL;
 484     char netbiosName[MAX_NB_NAME_LENGTH];
 485     DWORD CurrentState = 0;
 486     char  HostName[64] = "";
 487     char tbuffer[MAX_PATH]="";
 488     HANDLE fh;
 489     HKEY hk;
 490     char szUser[128] = "";
 491     char szClient[MAX_PATH] = "";
 492     char szPath[MAX_PATH] = "";
 493     NETRESOURCE nr;
 494     DWORD res;
 495     DWORD ioctlDebug = IoctlDebug();
 496     DWORD gle;
 497     DWORD dwSize = sizeof(szUser);
 498     int saveerrno;
 499
 500     memset(HostName, '\0', sizeof(HostName));
 501     gethostname(HostName, sizeof(HostName));
 502     if (!DisableServiceManagerCheck() &&
 503         GetServiceStatus(HostName, TEXT("TransarcAFSDaemon"), &CurrentState) == NOERROR &&
 504         CurrentState != SERVICE_RUNNING)
 505         return -1;
 506
 507     // Populate the Netbios Name
 508     lana_GetNetbiosName(netbiosName,LANA_NETBIOS_NAME_FULL);
 509
 510     if (fileNamep) {
 511         drivep = strchr(fileNamep, ':');
 512         if (drivep && (drivep - fileNamep) >= 1) {
 513             UINT driveType;
 514             tbuffer[0] = *(drivep - 1);
 515             tbuffer[1] = ':';
 516             tbuffer[2] = '\\';
 517             tbuffer[3] = '\0';
 518
 519             driveType = GetDriveType(tbuffer);
 520             switch (driveType) {
 521             case DRIVE_UNKNOWN:
 522             case DRIVE_REMOTE:
 523                 if (DriveIsMappedToAFS(tbuffer, netbiosName))
 524                     strcpy(&tbuffer[2], SMB_IOCTL_FILENAME);
 525                 else
 526                     return -1;
 527                 break;
 528             default:
 529                 return -1;
 530             }
 531         } else if (fileNamep[0] == fileNamep[1] &&
 532                    (fileNamep[0] == '\\' || fileNamep[0] == '/'))
 533         {
 534             int count = 0, i = 0;
 535
 536             while (count < 4 && fileNamep[i]) {
 537                 tbuffer[i] = fileNamep[i];
 538                 if ( tbuffer[i] == '\\' ||
 539                      tbuffer[i] == '/')
 540                     count++;
 541                 i++;
 542             }
 543             if (fileNamep[i] == 0)
 544                 tbuffer[i++] = '\\';
 545             tbuffer[i] = 0;
 546             strcat(tbuffer, SMB_IOCTL_FILENAME);
 547         } else {
 548             char curdir[MAX_PATH]="";
 549
 550             GetCurrentDirectory(sizeof(curdir), curdir);
 551             if ( curdir[1] == ':' ) {
 552                 tbuffer[0] = curdir[0];
 553                 tbuffer[1] = ':';
 554                 strcpy(tbuffer + 2, SMB_IOCTL_FILENAME);
 555             } else if (curdir[0] == curdir[1] &&
 556                        (curdir[0] == '\\' || curdir[0] == '/'))
 557             {
 558                 int count = 0, i = 0;
 559
 560                 while (count < 4 && curdir[i]) {
 561                     tbuffer[i] = curdir[i];
 562                     if ( tbuffer[i] == '\\' ||
 563                          tbuffer[i] == '/')
 564                         count++;
 565                     i++;
 566                 }
 567                 if (tbuffer[i] == 0)
 568                     tbuffer[i++] = '\\';
 569                 tbuffer[i] = 0;
 570                 strcat(tbuffer, SMB_IOCTL_FILENAME_NOSLASH);
 571             }
 572         }
 573     }
 574     if (!tbuffer[0]) {
 575         /* No file name starting with drive colon specified, use UNC name */
 576         sprintf(tbuffer,"\\\\%s\\all%s",netbiosName,SMB_IOCTL_FILENAME);
 577     }
 578
 579     fflush(stdout);
 580     /* now open the file */
 581     fh = CreateFile(tbuffer, GENERIC_READ | GENERIC_WRITE,
 582                     FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
 583                     FILE_FLAG_WRITE_THROUGH, NULL);
 584
 585         fflush(stdout);
 586
 587     if (fh == INVALID_HANDLE_VALUE) {
 588         int  gonext = 0;
 589
 590         gle = GetLastError();
 591         if (gle && ioctlDebug ) {
 592             char buf[4096];
 593
 594             saveerrno = errno;
 595             if ( FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM,
 596                                NULL,
 597                                gle,
 598                                MAKELANGID(LANG_ENGLISH,SUBLANG_ENGLISH_US),
 599                                buf,
 600                                4096,
 601                                (va_list *) NULL
 602                                ) )
 603             {
 604                 fprintf(stderr,"pioctl CreateFile(%s) failed: 0x%X\r\n\t[%s]\r\n",
 605                         tbuffer,gle,buf);
 606             }
 607             errno = saveerrno;
 608         }
 609
 610         lana_GetNetbiosName(szClient, LANA_NETBIOS_NAME_FULL);
 611
 612         if (RegOpenKey (HKEY_CURRENT_USER,
 613                          TEXT("Software\\Microsoft\\Windows\\CurrentVersion\\Explorer"), &hk) == 0)
 614         {
 615             DWORD dwType = REG_SZ;
 616             RegQueryValueEx (hk, TEXT("Logon User Name"), NULL, &dwType, (PBYTE)szUser, &dwSize);
 617             RegCloseKey (hk);
 618         }
 619
 620         if ( szUser[0] ) {
 621             if ( ioctlDebug ) {
 622                 saveerrno = errno;
 623                 fprintf(stderr, "pioctl Explorer logon user: [%s]\r\n",szUser);
 624                 errno = saveerrno;
 625             }
 626             sprintf(szPath, "\\\\%s", szClient);
 627             memset (&nr, 0x00, sizeof(NETRESOURCE));
 628             nr.dwType=RESOURCETYPE_DISK;
 629             nr.lpLocalName=0;
 630             nr.lpRemoteName=szPath;
 631             res = WNetAddConnection2(&nr,NULL,szUser,0);
 632             if (res) {
 633                 if ( ioctlDebug ) {
 634                     saveerrno = errno;
 635                     fprintf(stderr, "pioctl WNetAddConnection2(%s,%s) failed: 0x%X\r\n",
 636                              szPath,szUser,res);
 637                     errno = saveerrno;
 638                 }
 639                 gonext = 1;
 640             }
 641
 642             sprintf(szPath, "\\\\%s\\all", szClient);
 643             res = WNetAddConnection2(&nr,NULL,szUser,0);
 644             if (res) {
 645                 if ( ioctlDebug ) {
 646                     saveerrno = errno;
 647                     fprintf(stderr, "pioctl WNetAddConnection2(%s,%s) failed: 0x%X\r\n",
 648                              szPath,szUser,res);
 649                     errno = saveerrno;
 650                 }
 651                 gonext = 1;
 652             }
 653
 654             if (gonext)
 655                 goto try_lsa_principal;
 656
 657             fh = CreateFile(tbuffer, GENERIC_READ | GENERIC_WRITE,
 658                              FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
 659                              FILE_FLAG_WRITE_THROUGH, NULL);
 660             fflush(stdout);
 661             if (fh == INVALID_HANDLE_VALUE) {
 662                 gle = GetLastError();
 663                 if (gle && ioctlDebug ) {
 664                     char buf[4096];
 665
 666                     saveerrno = errno;
 667                     if ( FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM,
 668                                         NULL,
 669                                         gle,
 670                                         MAKELANGID(LANG_ENGLISH,SUBLANG_ENGLISH_US),
 671                                         buf,
 672                                         4096,
 673                                         (va_list *) NULL
 674                                         ) )
 675                     {
 676                         fprintf(stderr,"pioctl CreateFile(%s) failed: 0x%X\r\n\t[%s]\r\n",
 677                                  tbuffer,gle,buf);
 678                     }
 679                     errno = saveerrno;
 680                 }
 681             }
 682         }
 683     }
 684
 685   try_lsa_principal:
 686     if (fh == INVALID_HANDLE_VALUE) {
 687         int  gonext = 0;
 688
 689         dwSize = sizeof(szUser);
 690         if (GetLSAPrincipalName(szUser, &dwSize)) {
 691             if ( ioctlDebug ) {
 692                 saveerrno = errno;
 693                 fprintf(stderr, "pioctl LSA Principal logon user: [%s]\r\n",szUser);
 694                 errno = saveerrno;
 695             }
 696             sprintf(szPath, "\\\\%s", szClient);
 697             memset (&nr, 0x00, sizeof(NETRESOURCE));
 698             nr.dwType=RESOURCETYPE_DISK;
 699             nr.lpLocalName=0;
 700             nr.lpRemoteName=szPath;
 701             res = WNetAddConnection2(&nr,NULL,szUser,0);
 702             if (res) {
 703                 if ( ioctlDebug ) {
 704                     saveerrno = errno;
 705                     fprintf(stderr, "pioctl WNetAddConnection2(%s,%s) failed: 0x%X\r\n",
 706                              szPath,szUser,res);
 707                     errno = saveerrno;
 708                 }
 709                 gonext = 1;
 710             }
 711
 712             sprintf(szPath, "\\\\%s\\all", szClient);
 713             res = WNetAddConnection2(&nr,NULL,szUser,0);
 714             if (res) {
 715                 if ( ioctlDebug ) {
 716                     saveerrno = errno;
 717                     fprintf(stderr, "pioctl WNetAddConnection2(%s,%s) failed: 0x%X\r\n",
 718                              szPath,szUser,res);
 719                     errno = saveerrno;
 720                 }
 721                 gonext = 1;
 722             }
 723
 724             if (gonext)
 725                 goto try_sam_compat;
 726
 727             fh = CreateFile(tbuffer, GENERIC_READ | GENERIC_WRITE,
 728                              FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
 729                              FILE_FLAG_WRITE_THROUGH, NULL);
 730             fflush(stdout);
 731             if (fh == INVALID_HANDLE_VALUE) {
 732                 gle = GetLastError();
 733                 if (gle && ioctlDebug ) {
 734                     char buf[4096];
 735
 736                     saveerrno = errno;
 737                     if ( FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM,
 738                                         NULL,
 739                                         gle,
 740                                         MAKELANGID(LANG_ENGLISH,SUBLANG_ENGLISH_US),
 741                                         buf,
 742                                         4096,
 743                                         (va_list *) NULL
 744                                         ) )
 745                     {
 746                         fprintf(stderr,"pioctl CreateFile(%s) failed: 0x%X\r\n\t[%s]\r\n",
 747                                  tbuffer,gle,buf);
 748                     }
 749                     errno = saveerrno;
 750
 751                 }
 752             }
 753         }
 754     }
 755
 756   try_sam_compat:
 757     if ( fh == INVALID_HANDLE_VALUE ) {
 758         dwSize = sizeof(szUser);
 759         if (GetUserNameEx(NameSamCompatible, szUser, &dwSize)) {
 760             if ( ioctlDebug ) {
 761                 saveerrno = errno;
 762                 fprintf(stderr, "pioctl SamCompatible logon user: [%s]\r\n",szUser);
 763                 errno = saveerrno;
 764             }
 765             sprintf(szPath, "\\\\%s", szClient);
 766             memset (&nr, 0x00, sizeof(NETRESOURCE));
 767             nr.dwType=RESOURCETYPE_DISK;
 768             nr.lpLocalName=0;
 769             nr.lpRemoteName=szPath;
 770             res = WNetAddConnection2(&nr,NULL,szUser,0);
 771             if (res) {
 772                 if ( ioctlDebug ) {
 773                     saveerrno = errno;
 774                     fprintf(stderr, "pioctl WNetAddConnection2(%s,%s) failed: 0x%X\r\n",
 775                              szPath,szUser,res);
 776                     errno = saveerrno;
 777                 }
 778             }
 779
 780             sprintf(szPath, "\\\\%s\\all", szClient);
 781             res = WNetAddConnection2(&nr,NULL,szUser,0);
 782             if (res) {
 783                 if ( ioctlDebug ) {
 784                     saveerrno = errno;
 785                     fprintf(stderr, "pioctl WNetAddConnection2(%s,%s) failed: 0x%X\r\n",
 786                              szPath,szUser,res);
 787                     errno = saveerrno;
 788                 }
 789                 return -1;
 790             }
 791
 792             fh = CreateFile(tbuffer, GENERIC_READ | GENERIC_WRITE,
 793                              FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
 794                              FILE_FLAG_WRITE_THROUGH, NULL);
 795             fflush(stdout);
 796             if (fh == INVALID_HANDLE_VALUE) {
 797                 gle = GetLastError();
 798                 if (gle && ioctlDebug ) {
 799                     char buf[4096];
 800
 801                     saveerrno = errno;
 802                     if ( FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM,
 803                                         NULL,
 804                                         gle,
 805                                         MAKELANGID(LANG_ENGLISH,SUBLANG_ENGLISH_US),
 806                                         buf,
 807                                         4096,
 808                                         (va_list *) NULL
 809                                         ) )
 810                     {
 811                         fprintf(stderr,"pioctl CreateFile(%s) failed: 0x%X\r\n\t[%s]\r\n",
 812                                  tbuffer,gle,buf);
 813                     }
 814                     errno = saveerrno;
 815                 }
 816                 return -1;
 817             }
 818         } else {
 819             fprintf(stderr, "GetUserNameEx(NameSamCompatible) failed: 0x%X\r\n", GetLastError());
 820             return -1;
 821         }
 822     }
 823
 824     /* return fh and success code */
 825     *handlep = fh;
 826     return 0;
 827 }
 828
 829 static long
 830 Transceive(HANDLE handle, fs_ioctlRequest_t * reqp)
 831 {
 832     long rcount;
 833     long ioCount;
 834     DWORD gle;
 835     DWORD ioctlDebug = IoctlDebug();
 836     int save;
 837
 838     rcount = (long)(reqp->mp - reqp->data);
 839     if (rcount <= 0) {
 840         if ( ioctlDebug ) {
 841             save = errno;
 842             fprintf(stderr, "pioctl Transceive rcount <= 0: %d\r\n",rcount);
 843             errno = save;
 844         }
 845         return EINVAL;          /* not supposed to happen */
 846     }
 847
 848     if (!WriteFile(handle, reqp->data, rcount, &ioCount, NULL)) {
 849         /* failed to write */
 850         gle = GetLastError();
 851
 852         if ( ioctlDebug ) {
 853             save = errno;
 854             fprintf(stderr, "pioctl Transceive WriteFile failed: 0x%X\r\n",gle);
 855             errno = save;
 856         }
 857         return gle;
 858     }
 859
 860     if (!ReadFile(handle, reqp->data, sizeof(reqp->data), &ioCount, NULL)) {
 861         /* failed to read */
 862         gle = GetLastError();
 863
 864         if ( ioctlDebug ) {
 865             save = errno;
 866             fprintf(stderr, "pioctl Transceive ReadFile failed: 0x%X\r\n",gle);
 867             errno = save;
 868         }
 869         return gle;
 870     }
 871
 872     reqp->nbytes = ioCount;     /* set # of bytes available */
 873     reqp->mp = reqp->data;      /* restart marshalling */
 874
 875     /* return success */
 876     return 0;
 877 }
 878
 879 static long
 880 MarshallLong(fs_ioctlRequest_t * reqp, long val)
 881 {
 882     memcpy(reqp->mp, &val, 4);
 883     reqp->mp += 4;
 884     return 0;
 885 }
 886
 887 static long
 888 UnmarshallLong(fs_ioctlRequest_t * reqp, long *valp)
 889 {
 890     int save;
 891
 892     /* not enough data left */
 893     if (reqp->nbytes < 4) {
 894         if ( IoctlDebug() ) {
 895             save = errno;
 896             fprintf(stderr, "pioctl UnmarshallLong reqp->nbytes < 4: %d\r\n",
 897                      reqp->nbytes);
 898             errno = save;
 899         }
 900         return -1;
 901     }
 902
 903     memcpy(valp, reqp->mp, 4);
 904     reqp->mp += 4;
 905     reqp->nbytes -= 4;
 906     return 0;
 907 }
 908
 909 /* includes marshalling NULL pointer as a null (0 length) string */
 910 static long
 911 MarshallString(fs_ioctlRequest_t * reqp, char *stringp, int is_utf8)
 912 {
 913     int count;
 914     int save;
 915
 916     if (stringp)
 917         count = (int)strlen(stringp) + 1;/* space required including null */
 918     else
 919         count = 1;
 920
 921     if (is_utf8) {
 922         count += utf8_prefix_size;
 923     }
 924
 925     /* watch for buffer overflow */
 926     if ((reqp->mp - reqp->data) + count > sizeof(reqp->data)) {
 927         if ( IoctlDebug() ) {
 928             save = errno;
 929             fprintf(stderr, "pioctl MarshallString buffer overflow\r\n");
 930             errno = save;
 931         }
 932         return -1;
 933     }
 934
 935     if (is_utf8) {
 936         memcpy(reqp->mp, utf8_prefix, utf8_prefix_size);
 937         reqp->mp += utf8_prefix_size;
 938         count -= utf8_prefix_size;
 939     }
 940
 941     if (stringp)
 942         memcpy(reqp->mp, stringp, count);
 943     else
 944         *(reqp->mp) = 0;
 945     reqp->mp += count;
 946     return 0;
 947 }
 948
 949 /* take a path with a drive letter, possibly relative, and return a full path
 950  * without the drive letter.  This is the full path relative to the working
 951  * dir for that drive letter.  The input and output paths can be the same.
 952  */
 953 static long
 954 fs_GetFullPath(char *pathp, char *outPathp, long outSize)
 955 {
 956     char tpath[1000];
 957     char origPath[1000];
 958     char *firstp;
 959     long code;
 960     int pathHasDrive;
 961     int doSwitch;
 962     char newPath[3];
 963     char * p;
 964     int save;
 965
 966     if (pathp[0] != 0 && pathp[1] == ':') {
 967         /* there's a drive letter there */
 968         firstp = pathp + 2;
 969         pathHasDrive = 1;
 970     } else {
 971         firstp = pathp;
 972         pathHasDrive = 0;
 973     }
 974
 975     if ( firstp[0] == '\\' && firstp[1] == '\\' ||
 976          firstp[0] == '/' && firstp[1] == '/') {
 977         /* UNC path - strip off the server and sharename */
 978         int i, count;
 979         for ( i=2,count=2; count < 4 && firstp[i]; i++ ) {
 980             if ( firstp[i] == '\\' || firstp[i] == '/' ) {
 981                 count++;
 982             }
 983         }
 984         if ( firstp[i] == 0 ) {
 985             strcpy(outPathp,"\\");
 986         } else {
 987             strcpy(outPathp,&firstp[--i]);
 988         }
 989         for (p=outPathp ;*p; p++) {
 990             if (*p == '/')
 991                 *p = '\\';
 992         }
 993         return 0;
 994     } else if (firstp[0] == '\\' || firstp[0] == '/') {
 995         /* already an absolute pathname, just copy it back */
 996         strcpy(outPathp, firstp);
 997         for (p=outPathp ;*p; p++) {
 998             if (*p == '/')
 999                 *p = '\\';
1000         }
1001         return 0;
1002     }
1003
1004     GetCurrentDirectory(sizeof(origPath), origPath);
1005
1006     doSwitch = 0;
1007     if (pathHasDrive && (*pathp & ~0x20) != (origPath[0] & ~0x20)) {
1008         /* a drive has been specified and it isn't our current drive.
1009          * to get path, switch to it first.  Must case-fold drive letters
1010          * for user convenience.
1011          */
1012         doSwitch = 1;
1013         newPath[0] = *pathp;
1014         newPath[1] = ':';
1015         newPath[2] = 0;
1016         if (!SetCurrentDirectory(newPath)) {
1017             code = GetLastError();
1018
1019             if ( IoctlDebug() ) {
1020                 save = errno;
1021                 fprintf(stderr, "pioctl fs_GetFullPath SetCurrentDirectory(%s) failed: 0x%X\r\n",
1022                          newPath, code);
1023                 errno = save;
1024             }
1025             return code;
1026         }
1027     }
1028
1029     /* now get the absolute path to the current wdir in this drive */
1030     GetCurrentDirectory(sizeof(tpath), tpath);
1031     if (tpath[1] == ':')
1032         strcpy(outPathp, tpath + 2);    /* skip drive letter */
1033     else if ( tpath[0] == '\\' && tpath[1] == '\\'||
1034               tpath[0] == '/' && tpath[1] == '/') {
1035         /* UNC path - strip off the server and sharename */
1036         int i, count;
1037         for ( i=2,count=2; count < 4 && tpath[i]; i++ ) {
1038             if ( tpath[i] == '\\' || tpath[i] == '/' ) {
1039                 count++;
1040             }
1041         }
1042         if ( tpath[i] == 0 ) {
1043             strcpy(outPathp,"\\");
1044         } else {
1045             strcpy(outPathp,&tpath[--i]);
1046         }
1047     } else {
1048         /* this should never happen */
1049         strcpy(outPathp, tpath);
1050     }
1051
1052     /* if there is a non-null name after the drive, append it */
1053     if (*firstp != 0) {
1054         int len = (int)strlen(outPathp);
1055         if (outPathp[len-1] != '\\' && outPathp[len-1] != '/')
1056             strcat(outPathp, "\\");
1057         strcat(outPathp, firstp);
1058     }
1059
1060     /* finally, if necessary, switch back to our home drive letter */
1061     if (doSwitch) {
1062         SetCurrentDirectory(origPath);
1063     }
1064
1065     for (p=outPathp ;*p; p++) {
1066         if (*p == '/')
1067             *p = '\\';
1068     }
1069     return 0;
1070 }
1071
1072 static long
1073 pioctl_int(char *pathp, long opcode, struct ViceIoctl *blobp, int follow, int is_utf8)
1074 {
1075     fs_ioctlRequest_t preq;
1076     long code;
1077     long temp;
1078     char fullPath[1000];
1079     HANDLE reqHandle;
1080     int save;
1081
1082     code = GetIoctlHandle(pathp, &reqHandle);
1083     if (code) {
1084         if (pathp)
1085             errno = EINVAL;
1086         else
1087             errno = ENODEV;
1088         return code;
1089     }
1090
1091     /* init the request structure */
1092     InitFSRequest(&preq);
1093
1094     /* marshall the opcode, the path name and the input parameters */
1095     MarshallLong(&preq, opcode);
1096     /* when marshalling the path, remove the drive letter, since we already
1097      * used the drive letter to find the AFS daemon; we don't need it any more.
1098      * Eventually we'll expand relative path names here, too, since again, only
1099      * we understand those.
1100      */
1101     if (pathp) {
1102         code = fs_GetFullPath(pathp, fullPath, sizeof(fullPath));
1103         if (code) {
1104             CloseHandle(reqHandle);
1105             errno = EINVAL;
1106             return code;
1107         }
1108     } else {
1109         strcpy(fullPath, "");
1110     }
1111
1112     MarshallString(&preq, fullPath, is_utf8);
1113     if (blobp->in_size) {
1114         if (blobp->in_size > sizeof(preq.data) - (preq.mp - preq.data)*sizeof(char)) {
1115             errno = E2BIG;
1116             return -1;
1117         }
1118         memcpy(preq.mp, blobp->in, blobp->in_size);
1119         preq.mp += blobp->in_size;
1120     }
1121
1122     /* now make the call */
1123     code = Transceive(reqHandle, &preq);
1124     if (code) {
1125         CloseHandle(reqHandle);
1126         return code;
1127     }
1128
1129     /* now unmarshall the return value */
1130     if (UnmarshallLong(&preq, &temp) != 0) {
1131         CloseHandle(reqHandle);
1132         return -1;
1133     }
1134
1135     if (temp != 0) {
1136         CloseHandle(reqHandle);
1137         errno = CMtoUNIXerror(temp);
1138         if ( IoctlDebug() ) {
1139             save = errno;
1140             fprintf(stderr, "pioctl temp != 0: 0x%X\r\n",temp);
1141             errno = save;
1142         }
1143         return -1;
1144     }
1145
1146     /* otherwise, unmarshall the output parameters */
1147     if (blobp->out_size) {
1148         temp = blobp->out_size;
1149         if (preq.nbytes < temp)
1150             temp = preq.nbytes;
1151         memcpy(blobp->out, preq.mp, temp);
1152         blobp->out_size = temp;
1153     }
1154
1155     /* and return success */
1156     CloseHandle(reqHandle);
1157     return 0;
1158 }
1159
1160 long
1161 pioctl_utf8(char * pathp, long opcode, struct ViceIoctl * blobp, int follow)
1162 {
1163     return pioctl_int(pathp, opcode, blobp, follow, TRUE);
1164 }
1165
1166 long
1167 pioctl(char * pathp, long opcode, struct ViceIoctl * blobp, int follow)
1168 {
1169     return pioctl_int(pathp, opcode, blobp, follow, FALSE);
1170 }
1171