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 (lpnrLocal[i].lpLocalName &&
 450                     toupper(lpnrLocal[i].lpLocalName[0]) == toupper(drivestr[0])) {
 451                     //
 452                     // Skip the two backslashes at the start of the UNC device name
 453                     //
 454                     if ( _strnicmp( &(lpnrLocal[i].lpRemoteName[2]), NetbiosName, strlen(NetbiosName)) == 0 )
 455                     {
 456                         bIsAFS = TRUE;
 457                         break;
 458                     }
 459                 }
 460             }
 461         }
 462         // Process errors.
 463         //
 464         else if (dwResultEnum != ERROR_NO_MORE_ITEMS)
 465             break;
 466     }
 467     while (dwResultEnum != ERROR_NO_MORE_ITEMS);
 468
 469     //
 470     // Call the GlobalFree function to free the memory.
 471     //
 472     GlobalFree((HGLOBAL) lpnrLocal);
 473     //
 474     // Call WNetCloseEnum to end the enumeration.
 475     //
 476     dwResult = WNetCloseEnum(hEnum);
 477
 478     return bIsAFS;
 479 }
 480
 481 static long
 482 GetIoctlHandle(char *fileNamep, HANDLE * handlep)
 483 {
 484     char *drivep = NULL;
 485     char netbiosName[MAX_NB_NAME_LENGTH];
 486     DWORD CurrentState = 0;
 487     char  HostName[64] = "";
 488     char tbuffer[MAX_PATH]="";
 489     HANDLE fh;
 490     HKEY hk;
 491     char szUser[128] = "";
 492     char szClient[MAX_PATH] = "";
 493     char szPath[MAX_PATH] = "";
 494     NETRESOURCE nr;
 495     DWORD res;
 496     DWORD ioctlDebug = IoctlDebug();
 497     DWORD gle;
 498     DWORD dwSize = sizeof(szUser);
 499     int saveerrno;
 500
 501     memset(HostName, '\0', sizeof(HostName));
 502     gethostname(HostName, sizeof(HostName));
 503     if (!DisableServiceManagerCheck() &&
 504         GetServiceStatus(HostName, TEXT("TransarcAFSDaemon"), &CurrentState) == NOERROR &&
 505         CurrentState != SERVICE_RUNNING)
 506         return -1;
 507
 508     // Populate the Netbios Name
 509     lana_GetNetbiosName(netbiosName,LANA_NETBIOS_NAME_FULL);
 510
 511     if (fileNamep) {
 512         drivep = strchr(fileNamep, ':');
 513         if (drivep && (drivep - fileNamep) >= 1) {
 514             UINT driveType;
 515             tbuffer[0] = *(drivep - 1);
 516             tbuffer[1] = ':';
 517             tbuffer[2] = '\\';
 518             tbuffer[3] = '\0';
 519
 520             driveType = GetDriveType(tbuffer);
 521             switch (driveType) {
 522             case DRIVE_UNKNOWN:
 523             case DRIVE_REMOTE:
 524                 if (DriveIsMappedToAFS(tbuffer, netbiosName))
 525                     strcpy(&tbuffer[2], SMB_IOCTL_FILENAME);
 526                 else
 527                     return -1;
 528                 break;
 529             default:
 530                 return -1;
 531             }
 532         } else if (fileNamep[0] == fileNamep[1] &&
 533                    (fileNamep[0] == '\\' || fileNamep[0] == '/'))
 534         {
 535             int count = 0, i = 0;
 536
 537             while (count < 4 && fileNamep[i]) {
 538                 tbuffer[i] = fileNamep[i];
 539                 if ( tbuffer[i] == '\\' ||
 540                      tbuffer[i] == '/')
 541                     count++;
 542                 i++;
 543             }
 544             if (fileNamep[i] == 0)
 545                 tbuffer[i++] = '\\';
 546             tbuffer[i] = 0;
 547             strcat(tbuffer, SMB_IOCTL_FILENAME);
 548         } else {
 549             char curdir[MAX_PATH]="";
 550
 551             GetCurrentDirectory(sizeof(curdir), curdir);
 552             if ( curdir[1] == ':' ) {
 553                 tbuffer[0] = curdir[0];
 554                 tbuffer[1] = ':';
 555                 strcpy(tbuffer + 2, SMB_IOCTL_FILENAME);
 556             } else if (curdir[0] == curdir[1] &&
 557                        (curdir[0] == '\\' || curdir[0] == '/'))
 558             {
 559                 int count = 0, i = 0;
 560
 561                 while (count < 4 && curdir[i]) {
 562                     tbuffer[i] = curdir[i];
 563                     if ( tbuffer[i] == '\\' ||
 564                          tbuffer[i] == '/')
 565                         count++;
 566                     i++;
 567                 }
 568                 if (tbuffer[i] == 0)
 569                     tbuffer[i++] = '\\';
 570                 tbuffer[i] = 0;
 571                 strcat(tbuffer, SMB_IOCTL_FILENAME_NOSLASH);
 572             }
 573         }
 574     }
 575     if (!tbuffer[0]) {
 576         /* No file name starting with drive colon specified, use UNC name */
 577         sprintf(tbuffer,"\\\\%s\\all%s",netbiosName,SMB_IOCTL_FILENAME);
 578     }
 579
 580     fflush(stdout);
 581     /* now open the file */
 582     fh = CreateFile(tbuffer, GENERIC_READ | GENERIC_WRITE,
 583                     FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
 584                     FILE_FLAG_WRITE_THROUGH, NULL);
 585
 586         fflush(stdout);
 587
 588     if (fh == INVALID_HANDLE_VALUE) {
 589         int  gonext = 0;
 590
 591         gle = GetLastError();
 592         if (gle && ioctlDebug ) {
 593             char buf[4096];
 594
 595             saveerrno = errno;
 596             if ( FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM,
 597                                NULL,
 598                                gle,
 599                                MAKELANGID(LANG_ENGLISH,SUBLANG_ENGLISH_US),
 600                                buf,
 601                                4096,
 602                                (va_list *) NULL
 603                                ) )
 604             {
 605                 fprintf(stderr,"pioctl CreateFile(%s) failed: 0x%X\r\n\t[%s]\r\n",
 606                         tbuffer,gle,buf);
 607             }
 608             errno = saveerrno;
 609         }
 610
 611         lana_GetNetbiosName(szClient, LANA_NETBIOS_NAME_FULL);
 612
 613         if (RegOpenKey (HKEY_CURRENT_USER,
 614                          TEXT("Software\\Microsoft\\Windows\\CurrentVersion\\Explorer"), &hk) == 0)
 615         {
 616             DWORD dwType = REG_SZ;
 617             RegQueryValueEx (hk, TEXT("Logon User Name"), NULL, &dwType, (PBYTE)szUser, &dwSize);
 618             RegCloseKey (hk);
 619         }
 620
 621         if ( szUser[0] ) {
 622             if ( ioctlDebug ) {
 623                 saveerrno = errno;
 624                 fprintf(stderr, "pioctl Explorer logon user: [%s]\r\n",szUser);
 625                 errno = saveerrno;
 626             }
 627             sprintf(szPath, "\\\\%s", szClient);
 628             memset (&nr, 0x00, sizeof(NETRESOURCE));
 629             nr.dwType=RESOURCETYPE_DISK;
 630             nr.lpLocalName=0;
 631             nr.lpRemoteName=szPath;
 632             res = WNetAddConnection2(&nr,NULL,szUser,0);
 633             if (res) {
 634                 if ( ioctlDebug ) {
 635                     saveerrno = errno;
 636                     fprintf(stderr, "pioctl WNetAddConnection2(%s,%s) failed: 0x%X\r\n",
 637                              szPath,szUser,res);
 638                     errno = saveerrno;
 639                 }
 640                 gonext = 1;
 641             }
 642
 643             sprintf(szPath, "\\\\%s\\all", szClient);
 644             res = WNetAddConnection2(&nr,NULL,szUser,0);
 645             if (res) {
 646                 if ( ioctlDebug ) {
 647                     saveerrno = errno;
 648                     fprintf(stderr, "pioctl WNetAddConnection2(%s,%s) failed: 0x%X\r\n",
 649                              szPath,szUser,res);
 650                     errno = saveerrno;
 651                 }
 652                 gonext = 1;
 653             }
 654
 655             if (gonext)
 656                 goto try_lsa_principal;
 657
 658             fh = CreateFile(tbuffer, GENERIC_READ | GENERIC_WRITE,
 659                              FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
 660                              FILE_FLAG_WRITE_THROUGH, NULL);
 661             fflush(stdout);
 662             if (fh == INVALID_HANDLE_VALUE) {
 663                 gle = GetLastError();
 664                 if (gle && ioctlDebug ) {
 665                     char buf[4096];
 666
 667                     saveerrno = errno;
 668                     if ( FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM,
 669                                         NULL,
 670                                         gle,
 671                                         MAKELANGID(LANG_ENGLISH,SUBLANG_ENGLISH_US),
 672                                         buf,
 673                                         4096,
 674                                         (va_list *) NULL
 675                                         ) )
 676                     {
 677                         fprintf(stderr,"pioctl CreateFile(%s) failed: 0x%X\r\n\t[%s]\r\n",
 678                                  tbuffer,gle,buf);
 679                     }
 680                     errno = saveerrno;
 681                 }
 682             }
 683         }
 684     }
 685
 686   try_lsa_principal:
 687     if (fh == INVALID_HANDLE_VALUE) {
 688         int  gonext = 0;
 689
 690         dwSize = sizeof(szUser);
 691         if (GetLSAPrincipalName(szUser, &dwSize)) {
 692             if ( ioctlDebug ) {
 693                 saveerrno = errno;
 694                 fprintf(stderr, "pioctl LSA Principal logon user: [%s]\r\n",szUser);
 695                 errno = saveerrno;
 696             }
 697             sprintf(szPath, "\\\\%s", szClient);
 698             memset (&nr, 0x00, sizeof(NETRESOURCE));
 699             nr.dwType=RESOURCETYPE_DISK;
 700             nr.lpLocalName=0;
 701             nr.lpRemoteName=szPath;
 702             res = WNetAddConnection2(&nr,NULL,szUser,0);
 703             if (res) {
 704                 if ( ioctlDebug ) {
 705                     saveerrno = errno;
 706                     fprintf(stderr, "pioctl WNetAddConnection2(%s,%s) failed: 0x%X\r\n",
 707                              szPath,szUser,res);
 708                     errno = saveerrno;
 709                 }
 710                 gonext = 1;
 711             }
 712
 713             sprintf(szPath, "\\\\%s\\all", szClient);
 714             res = WNetAddConnection2(&nr,NULL,szUser,0);
 715             if (res) {
 716                 if ( ioctlDebug ) {
 717                     saveerrno = errno;
 718                     fprintf(stderr, "pioctl WNetAddConnection2(%s,%s) failed: 0x%X\r\n",
 719                              szPath,szUser,res);
 720                     errno = saveerrno;
 721                 }
 722                 gonext = 1;
 723             }
 724
 725             if (gonext)
 726                 goto try_sam_compat;
 727
 728             fh = CreateFile(tbuffer, GENERIC_READ | GENERIC_WRITE,
 729                              FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
 730                              FILE_FLAG_WRITE_THROUGH, NULL);
 731             fflush(stdout);
 732             if (fh == INVALID_HANDLE_VALUE) {
 733                 gle = GetLastError();
 734                 if (gle && ioctlDebug ) {
 735                     char buf[4096];
 736
 737                     saveerrno = errno;
 738                     if ( FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM,
 739                                         NULL,
 740                                         gle,
 741                                         MAKELANGID(LANG_ENGLISH,SUBLANG_ENGLISH_US),
 742                                         buf,
 743                                         4096,
 744                                         (va_list *) NULL
 745                                         ) )
 746                     {
 747                         fprintf(stderr,"pioctl CreateFile(%s) failed: 0x%X\r\n\t[%s]\r\n",
 748                                  tbuffer,gle,buf);
 749                     }
 750                     errno = saveerrno;
 751
 752                 }
 753             }
 754         }
 755     }
 756
 757   try_sam_compat:
 758     if ( fh == INVALID_HANDLE_VALUE ) {
 759         dwSize = sizeof(szUser);
 760         if (GetUserNameEx(NameSamCompatible, szUser, &dwSize)) {
 761             if ( ioctlDebug ) {
 762                 saveerrno = errno;
 763                 fprintf(stderr, "pioctl SamCompatible logon user: [%s]\r\n",szUser);
 764                 errno = saveerrno;
 765             }
 766             sprintf(szPath, "\\\\%s", szClient);
 767             memset (&nr, 0x00, sizeof(NETRESOURCE));
 768             nr.dwType=RESOURCETYPE_DISK;
 769             nr.lpLocalName=0;
 770             nr.lpRemoteName=szPath;
 771             res = WNetAddConnection2(&nr,NULL,szUser,0);
 772             if (res) {
 773                 if ( ioctlDebug ) {
 774                     saveerrno = errno;
 775                     fprintf(stderr, "pioctl WNetAddConnection2(%s,%s) failed: 0x%X\r\n",
 776                              szPath,szUser,res);
 777                     errno = saveerrno;
 778                 }
 779             }
 780
 781             sprintf(szPath, "\\\\%s\\all", szClient);
 782             res = WNetAddConnection2(&nr,NULL,szUser,0);
 783             if (res) {
 784                 if ( ioctlDebug ) {
 785                     saveerrno = errno;
 786                     fprintf(stderr, "pioctl WNetAddConnection2(%s,%s) failed: 0x%X\r\n",
 787                              szPath,szUser,res);
 788                     errno = saveerrno;
 789                 }
 790                 return -1;
 791             }
 792
 793             fh = CreateFile(tbuffer, GENERIC_READ | GENERIC_WRITE,
 794                              FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
 795                              FILE_FLAG_WRITE_THROUGH, NULL);
 796             fflush(stdout);
 797             if (fh == INVALID_HANDLE_VALUE) {
 798                 gle = GetLastError();
 799                 if (gle && ioctlDebug ) {
 800                     char buf[4096];
 801
 802                     saveerrno = errno;
 803                     if ( FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM,
 804                                         NULL,
 805                                         gle,
 806                                         MAKELANGID(LANG_ENGLISH,SUBLANG_ENGLISH_US),
 807                                         buf,
 808                                         4096,
 809                                         (va_list *) NULL
 810                                         ) )
 811                     {
 812                         fprintf(stderr,"pioctl CreateFile(%s) failed: 0x%X\r\n\t[%s]\r\n",
 813                                  tbuffer,gle,buf);
 814                     }
 815                     errno = saveerrno;
 816                 }
 817                 return -1;
 818             }
 819         } else {
 820             fprintf(stderr, "GetUserNameEx(NameSamCompatible) failed: 0x%X\r\n", GetLastError());
 821             return -1;
 822         }
 823     }
 824
 825     /* return fh and success code */
 826     *handlep = fh;
 827     return 0;
 828 }
 829
 830 static long
 831 Transceive(HANDLE handle, fs_ioctlRequest_t * reqp)
 832 {
 833     long rcount;
 834     long ioCount;
 835     DWORD gle;
 836     DWORD ioctlDebug = IoctlDebug();
 837     int save;
 838
 839     rcount = (long)(reqp->mp - reqp->data);
 840     if (rcount <= 0) {
 841         if ( ioctlDebug ) {
 842             save = errno;
 843             fprintf(stderr, "pioctl Transceive rcount <= 0: %d\r\n",rcount);
 844             errno = save;
 845         }
 846         return EINVAL;          /* not supposed to happen */
 847     }
 848
 849     if (!WriteFile(handle, reqp->data, rcount, &ioCount, NULL)) {
 850         /* failed to write */
 851         gle = GetLastError();
 852
 853         if ( ioctlDebug ) {
 854             save = errno;
 855             fprintf(stderr, "pioctl Transceive WriteFile failed: 0x%X\r\n",gle);
 856             errno = save;
 857         }
 858         return gle;
 859     }
 860
 861     if (!ReadFile(handle, reqp->data, sizeof(reqp->data), &ioCount, NULL)) {
 862         /* failed to read */
 863         gle = GetLastError();
 864
 865         if ( ioctlDebug ) {
 866             save = errno;
 867             fprintf(stderr, "pioctl Transceive ReadFile failed: 0x%X\r\n",gle);
 868             errno = save;
 869         }
 870         return gle;
 871     }
 872
 873     reqp->nbytes = ioCount;     /* set # of bytes available */
 874     reqp->mp = reqp->data;      /* restart marshalling */
 875
 876     /* return success */
 877     return 0;
 878 }
 879
 880 static long
 881 MarshallLong(fs_ioctlRequest_t * reqp, long val)
 882 {
 883     memcpy(reqp->mp, &val, 4);
 884     reqp->mp += 4;
 885     return 0;
 886 }
 887
 888 static long
 889 UnmarshallLong(fs_ioctlRequest_t * reqp, long *valp)
 890 {
 891     int save;
 892
 893     /* not enough data left */
 894     if (reqp->nbytes < 4) {
 895         if ( IoctlDebug() ) {
 896             save = errno;
 897             fprintf(stderr, "pioctl UnmarshallLong reqp->nbytes < 4: %d\r\n",
 898                      reqp->nbytes);
 899             errno = save;
 900         }
 901         return -1;
 902     }
 903
 904     memcpy(valp, reqp->mp, 4);
 905     reqp->mp += 4;
 906     reqp->nbytes -= 4;
 907     return 0;
 908 }
 909
 910 /* includes marshalling NULL pointer as a null (0 length) string */
 911 static long
 912 MarshallString(fs_ioctlRequest_t * reqp, char *stringp, int is_utf8)
 913 {
 914     int count;
 915     int save;
 916
 917     if (stringp)
 918         count = (int)strlen(stringp) + 1;/* space required including null */
 919     else
 920         count = 1;
 921
 922     if (is_utf8) {
 923         count += utf8_prefix_size;
 924     }
 925
 926     /* watch for buffer overflow */
 927     if ((reqp->mp - reqp->data) + count > sizeof(reqp->data)) {
 928         if ( IoctlDebug() ) {
 929             save = errno;
 930             fprintf(stderr, "pioctl MarshallString buffer overflow\r\n");
 931             errno = save;
 932         }
 933         return -1;
 934     }
 935
 936     if (is_utf8) {
 937         memcpy(reqp->mp, utf8_prefix, utf8_prefix_size);
 938         reqp->mp += utf8_prefix_size;
 939         count -= utf8_prefix_size;
 940     }
 941
 942     if (stringp)
 943         memcpy(reqp->mp, stringp, count);
 944     else
 945         *(reqp->mp) = 0;
 946     reqp->mp += count;
 947     return 0;
 948 }
 949
 950 /* take a path with a drive letter, possibly relative, and return a full path
 951  * without the drive letter.  This is the full path relative to the working
 952  * dir for that drive letter.  The input and output paths can be the same.
 953  */
 954 static long
 955 fs_GetFullPath(char *pathp, char *outPathp, long outSize)
 956 {
 957     char tpath[1000];
 958     char origPath[1000];
 959     char *firstp;
 960     long code;
 961     int pathHasDrive;
 962     int doSwitch;
 963     char newPath[3];
 964     char * p;
 965     int save;
 966
 967     if (pathp[0] != 0 && pathp[1] == ':') {
 968         /* there's a drive letter there */
 969         firstp = pathp + 2;
 970         pathHasDrive = 1;
 971     } else {
 972         firstp = pathp;
 973         pathHasDrive = 0;
 974     }
 975
 976     if ( firstp[0] == '\\' && firstp[1] == '\\' ||
 977          firstp[0] == '/' && firstp[1] == '/') {
 978         /* UNC path - strip off the server and sharename */
 979         int i, count;
 980         for ( i=2,count=2; count < 4 && firstp[i]; i++ ) {
 981             if ( firstp[i] == '\\' || firstp[i] == '/' ) {
 982                 count++;
 983             }
 984         }
 985         if ( firstp[i] == 0 ) {
 986             strcpy(outPathp,"\\");
 987         } else {
 988             strcpy(outPathp,&firstp[--i]);
 989         }
 990         for (p=outPathp ;*p; p++) {
 991             if (*p == '/')
 992                 *p = '\\';
 993         }
 994         return 0;
 995     } else if (firstp[0] == '\\' || firstp[0] == '/') {
 996         /* already an absolute pathname, just copy it back */
 997         strcpy(outPathp, firstp);
 998         for (p=outPathp ;*p; p++) {
 999             if (*p == '/')
1000                 *p = '\\';
1001         }
1002         return 0;
1003     }
1004
1005     GetCurrentDirectory(sizeof(origPath), origPath);
1006
1007     doSwitch = 0;
1008     if (pathHasDrive && (*pathp & ~0x20) != (origPath[0] & ~0x20)) {
1009         /* a drive has been specified and it isn't our current drive.
1010          * to get path, switch to it first.  Must case-fold drive letters
1011          * for user convenience.
1012          */
1013         doSwitch = 1;
1014         newPath[0] = *pathp;
1015         newPath[1] = ':';
1016         newPath[2] = 0;
1017         if (!SetCurrentDirectory(newPath)) {
1018             code = GetLastError();
1019
1020             if ( IoctlDebug() ) {
1021                 save = errno;
1022                 fprintf(stderr, "pioctl fs_GetFullPath SetCurrentDirectory(%s) failed: 0x%X\r\n",
1023                          newPath, code);
1024                 errno = save;
1025             }
1026             return code;
1027         }
1028     }
1029
1030     /* now get the absolute path to the current wdir in this drive */
1031     GetCurrentDirectory(sizeof(tpath), tpath);
1032     if (tpath[1] == ':')
1033         strcpy(outPathp, tpath + 2);    /* skip drive letter */
1034     else if ( tpath[0] == '\\' && tpath[1] == '\\'||
1035               tpath[0] == '/' && tpath[1] == '/') {
1036         /* UNC path - strip off the server and sharename */
1037         int i, count;
1038         for ( i=2,count=2; count < 4 && tpath[i]; i++ ) {
1039             if ( tpath[i] == '\\' || tpath[i] == '/' ) {
1040                 count++;
1041             }
1042         }
1043         if ( tpath[i] == 0 ) {
1044             strcpy(outPathp,"\\");
1045         } else {
1046             strcpy(outPathp,&tpath[--i]);
1047         }
1048     } else {
1049         /* this should never happen */
1050         strcpy(outPathp, tpath);
1051     }
1052
1053     /* if there is a non-null name after the drive, append it */
1054     if (*firstp != 0) {
1055         int len = (int)strlen(outPathp);
1056         if (outPathp[len-1] != '\\' && outPathp[len-1] != '/')
1057             strcat(outPathp, "\\");
1058         strcat(outPathp, firstp);
1059     }
1060
1061     /* finally, if necessary, switch back to our home drive letter */
1062     if (doSwitch) {
1063         SetCurrentDirectory(origPath);
1064     }
1065
1066     for (p=outPathp ;*p; p++) {
1067         if (*p == '/')
1068             *p = '\\';
1069     }
1070     return 0;
1071 }
1072
1073 static long
1074 pioctl_int(char *pathp, long opcode, struct ViceIoctl *blobp, int follow, int is_utf8)
1075 {
1076     fs_ioctlRequest_t preq;
1077     long code;
1078     long temp;
1079     char fullPath[1000];
1080     HANDLE reqHandle;
1081     int save;
1082
1083     code = GetIoctlHandle(pathp, &reqHandle);
1084     if (code) {
1085         if (pathp)
1086             errno = EINVAL;
1087         else
1088             errno = ENODEV;
1089         return code;
1090     }
1091
1092     /* init the request structure */
1093     InitFSRequest(&preq);
1094
1095     /* marshall the opcode, the path name and the input parameters */
1096     MarshallLong(&preq, opcode);
1097     /* when marshalling the path, remove the drive letter, since we already
1098      * used the drive letter to find the AFS daemon; we don't need it any more.
1099      * Eventually we'll expand relative path names here, too, since again, only
1100      * we understand those.
1101      */
1102     if (pathp) {
1103         code = fs_GetFullPath(pathp, fullPath, sizeof(fullPath));
1104         if (code) {
1105             CloseHandle(reqHandle);
1106             errno = EINVAL;
1107             return code;
1108         }
1109     } else {
1110         strcpy(fullPath, "");
1111     }
1112
1113     MarshallString(&preq, fullPath, is_utf8);
1114     if (blobp->in_size) {
1115         if (blobp->in_size > sizeof(preq.data) - (preq.mp - preq.data)*sizeof(char)) {
1116             errno = E2BIG;
1117             return -1;
1118         }
1119         memcpy(preq.mp, blobp->in, blobp->in_size);
1120         preq.mp += blobp->in_size;
1121     }
1122
1123     /* now make the call */
1124     code = Transceive(reqHandle, &preq);
1125     if (code) {
1126         CloseHandle(reqHandle);
1127         return code;
1128     }
1129
1130     /* now unmarshall the return value */
1131     if (UnmarshallLong(&preq, &temp) != 0) {
1132         CloseHandle(reqHandle);
1133         return -1;
1134     }
1135
1136     if (temp != 0) {
1137         CloseHandle(reqHandle);
1138         errno = CMtoUNIXerror(temp);
1139         if ( IoctlDebug() ) {
1140             save = errno;
1141             fprintf(stderr, "pioctl temp != 0: 0x%X\r\n",temp);
1142             errno = save;
1143         }
1144         return -1;
1145     }
1146
1147     /* otherwise, unmarshall the output parameters */
1148     if (blobp->out_size) {
1149         temp = blobp->out_size;
1150         if (preq.nbytes < temp)
1151             temp = preq.nbytes;
1152         memcpy(blobp->out, preq.mp, temp);
1153         blobp->out_size = temp;
1154     }
1155
1156     /* and return success */
1157     CloseHandle(reqHandle);
1158     return 0;
1159 }
1160
1161 long
1162 pioctl_utf8(char * pathp, long opcode, struct ViceIoctl * blobp, int follow)
1163 {
1164     return pioctl_int(pathp, opcode, blobp, follow, TRUE);
1165 }
1166
1167 long
1168 pioctl(char * pathp, long opcode, struct ViceIoctl * blobp, int follow)
1169 {
1170     return pioctl_int(pathp, opcode, blobp, follow, FALSE);
1171 }
1172