src/WINNT/afsd/afslogon.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 <afs/param.h>
  11 #include <afs/stds.h>
  12
  13 #include <windows.h>
  14 #include <npapi.h>
  15 #include <winsock2.h>
  16 #include "afsd.h"
  17 #include <afs/pioctl_nt.h>
  18 #include <afs/kautils.h>
  19 #include "cm_config.h"
  20 #include "krb.h"
  21
  22 #include <io.h>
  23 #include <sys/stat.h>
  24 #include <sys/types.h>
  25 #include <fcntl.h>
  26
  27 DWORD LogonOption,TraceOption;
  28
  29 HANDLE hDLL;
  30
  31 WSADATA WSAjunk;
  32
  33 #define REG_CLIENT_PARMS_KEY            "SYSTEM\\CurrentControlSet\\Services\\TransarcAFSDaemon\\Parameters"
  34 #define REG_CLIENT_PROVIDER_KEY                 "SYSTEM\\CurrentControlSet\\Services\\TransarcAFSDaemon\\NetworkProvider"
  35 #define REG_CLIENT_RETRY_INTERVAL_PARM  "LoginRetryInterval"
  36 #define REG_CLIENT_FAIL_SILENTLY_PARM   "FailLoginsSilently"
  37 #define DEFAULT_RETRY_INTERVAL          30                        /* seconds*/
  38 #define DEFAULT_FAIL_SILENTLY           FALSE
  39 #define DEFAULT_SLEEP_INTERVAL          5                         /* seconds*/
  40
  41 #define ISLOGONINTEGRATED(v) ( ((v) & LOGON_OPTION_INTEGRATED)==LOGON_OPTION_INTEGRATED)
  42 #define ISHIGHSECURITY(v) ( ((v) & LOGON_OPTION_HIGHSECURITY)==LOGON_OPTION_HIGHSECURITY)
  43
  44 #define TRACE_OPTION_EVENT 1
  45 #define ISLOGONTRACE(v) ( ((v) & TRACE_OPTION_EVENT)==TRACE_OPTION_EVENT)
  46
  47 /* Structure def copied from DDK (NTDEF.H) */
  48 typedef struct UNICODE_STRING {
  49         USHORT Length;          /* number of bytes of Buffer actually used */
  50         USHORT MaximumLength;   /* sizeof buffer in bytes */
  51         WCHAR *Buffer;          /* 16 bit characters */
  52 } UNICODE_STRING;
  53
  54 /* Structure def copied from NP API documentation */
  55 typedef struct _MSV1_0_INTERACTIVE_LOGON {
  56         DWORD           MessageType;    /* Actually this is an enum; ignored */
  57         UNICODE_STRING  LogonDomainName;
  58         UNICODE_STRING  UserName;
  59         UNICODE_STRING  Password;
  60 } MSV1_0_INTERACTIVE_LOGON;
  61
  62 /*
  63  * GetLogonScript
  64  *
  65  * We get a logon script pathname from the HKEY_LOCAL_MACHINE registry.
  66  * I don't know what good this does; I just copied it from DFS.
  67  *
  68  * Returns NULL on failure.
  69  */
  70
  71
  72 void DebugEvent0(char *a)
  73 {
  74         HANDLE h; char *ptbuf[1];
  75         if (!ISLOGONTRACE(TraceOption))
  76                 return;
  77         h = RegisterEventSource(NULL, a);
  78         ptbuf[0] = a;
  79         ReportEvent(h, EVENTLOG_INFORMATION_TYPE, 0, 0, NULL, 1, 0, (const char **)ptbuf, NULL);
  80         DeregisterEventSource(h);
  81 }
  82
  83 #define MAXBUF_ 131
  84 void DebugEvent(char *a,char *b,...)
  85 {
  86         HANDLE h; char *ptbuf[1],buf[MAXBUF_+1];
  87         va_list marker;
  88         if (!ISLOGONTRACE(TraceOption))
  89                 return;
  90         h = RegisterEventSource(NULL, a);
  91         va_start(marker,b);
  92         _vsnprintf(buf,MAXBUF_,b,marker);
  93         ptbuf[0] = buf;
  94         ReportEvent(h, EVENTLOG_INFORMATION_TYPE, 0, 0, NULL, 1, 0, (const char **)ptbuf, NULL);\
  95         DeregisterEventSource(h);
  96         va_end(marker);
  97 }
  98
  99 CHAR *GenRandomName(CHAR *pbuf)
 100 {
 101         int i;
 102         srand( (unsigned)time( NULL ) );
 103         for (i=0;i<MAXRANDOMNAMELEN-1;i++)
 104                 pbuf[i]='a'+(rand() % 26);
 105         pbuf[MAXRANDOMNAMELEN-1]=0;
 106         return pbuf;
 107 }
 108
 109 WCHAR *GetLogonScript(CHAR *pname)
 110 {
 111         WCHAR *script,*buf;
 112         DWORD code;
 113         DWORD LSPtype, LSPsize;
 114         HKEY NPKey;
 115         WCHAR randomName[MAXRANDOMNAMELEN];
 116
 117         /*
 118          * Get Network Provider key.
 119          * Assume this works or we wouldn't be here.
 120          */
 121         (void) RegOpenKeyEx(HKEY_LOCAL_MACHINE, REG_CLIENT_PROVIDER_KEY,
 122                             0, KEY_QUERY_VALUE, &NPKey);
 123
 124         /*
 125          * Get Logon Script pathname length
 126          */
 127
 128         code = RegQueryValueExW(NPKey, L"LogonScript", NULL,
 129                                 &LSPtype, NULL, &LSPsize);
 130
 131         if (code) {
 132                 RegCloseKey (NPKey);
 133                 return NULL;
 134         }
 135
 136         if (LSPtype != REG_SZ) {        /* Maybe handle REG_EXPAND_SZ? */
 137                 RegCloseKey (NPKey);
 138                 return NULL;
 139         }
 140
 141         buf=(WCHAR *)LocalAlloc(LMEM_FIXED, LSPsize);
 142         script=(WCHAR *)LocalAlloc(LMEM_FIXED,LSPsize+(MAXRANDOMNAMELEN)*sizeof(WCHAR));
 143         /*
 144          * Explicitly call UNICODE version
 145          * Assume it will succeed since it did before
 146          */
 147         (void) RegQueryValueExW(NPKey, L"LogonScript", NULL,
 148                                 &LSPtype, (LPBYTE)buf, &LSPsize);
 149         MultiByteToWideChar(CP_ACP,0,pname,strlen(pname)+1,randomName,(strlen(pname)+1)*sizeof(WCHAR));
 150         swprintf(script,buf,randomName);
 151         free(buf);
 152
 153 #ifdef DEBUG_VERBOSE
 154                 {
 155         HANDLE h; char *ptbuf[1],buf[132],tbuf[255];
 156                 WideCharToMultiByte(CP_ACP,0,script,LSPsize,tbuf,255,NULL,NULL);
 157         h = RegisterEventSource(NULL, "AFS AfsLogon - GetLogonScript");
 158         sprintf(buf, "Script[%s,%d] Return Code[%x]",tbuf,LSPsize,code);
 159         ptbuf[0] = buf;
 160         ReportEvent(h, EVENTLOG_INFORMATION_TYPE, 0, 0, NULL, 1, 0, ptbuf, NULL);
 161         DeregisterEventSource(h);
 162                 }
 163 #endif
 164
 165         RegCloseKey (NPKey);
 166         return script;
 167 }
 168
 169 BOOLEAN AFSWillAutoStart(void)
 170 {
 171         SC_HANDLE scm;
 172         SC_HANDLE svc;
 173         BOOLEAN flag;
 174         BOOLEAN result = FALSE;
 175         LPQUERY_SERVICE_CONFIG pConfig = NULL;
 176         DWORD BufSize;
 177         LONG status;
 178
 179         /* Open services manager */
 180         scm = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
 181         if (!scm) return FALSE;
 182
 183         /* Open AFSD service */
 184         svc = OpenService(scm, "TransarcAFSDaemon", SERVICE_QUERY_CONFIG);
 185         if (!svc)
 186                 goto close_scm;
 187
 188         /* Query AFSD service config, first just to get buffer size */
 189         /* Expected to fail, so don't test return value */
 190         (void) QueryServiceConfig(svc, NULL, 0, &BufSize);
 191         status = GetLastError();
 192         if (status != ERROR_INSUFFICIENT_BUFFER)
 193                 goto close_svc;
 194
 195         /* Allocate buffer */
 196         pConfig = (LPQUERY_SERVICE_CONFIG)GlobalAlloc(GMEM_FIXED, BufSize);
 197         if (!pConfig)
 198                 goto close_svc;
 199
 200         /* Query AFSD service config, this time for real */
 201         flag = QueryServiceConfig(svc, pConfig, BufSize, &BufSize);
 202         if (!flag)
 203                 goto free_pConfig;
 204
 205         /* Is it autostart? */
 206         if (pConfig->dwStartType < SERVICE_DEMAND_START)
 207                 result = TRUE;
 208
 209 free_pConfig:
 210         GlobalFree(pConfig);
 211 close_svc:
 212         CloseServiceHandle(svc);
 213 close_scm:
 214         CloseServiceHandle(scm);
 215
 216         return result;
 217 }
 218
 219 DWORD MapAuthError(DWORD code)
 220 {
 221         switch (code) {
 222         case KTC_NOCM:
 223         case KTC_NOCMRPC:
 224                 return WN_NO_NETWORK;
 225 /*      case INTK_BADPW: return WN_BAD_PASSWORD;*/
 226 /*      case KERB_ERR_PRINCIPAL_UNKNOWN: return WN_BAD_USER;*/
 227         default: return WN_SUCCESS;
 228         }
 229 }
 230
 231 BOOLEAN APIENTRY DllEntryPoint(HANDLE dll, DWORD reason, PVOID reserved)
 232 {
 233         hDLL = dll;
 234         switch (reason) {
 235                 case DLL_PROCESS_ATTACH:
 236                         /* Initialize AFS libraries */
 237                         rx_Init(0);
 238                         ka_Init(0);
 239                         break;
 240
 241                 /* Everything else succeeds but does nothing. */
 242                 case DLL_PROCESS_DETACH:
 243                 case DLL_THREAD_ATTACH:
 244                 case DLL_THREAD_DETACH:
 245                 default:
 246                         break;
 247         }
 248
 249         return TRUE;
 250 }
 251
 252 DWORD APIENTRY NPGetCaps(DWORD index)
 253 {
 254         switch (index) {
 255                 case WNNC_NET_TYPE:
 256                         /* Don't have our own type; use somebody else's. */
 257                         return WNNC_NET_SUN_PC_NFS;
 258                 default:
 259                         return 0;
 260         }
 261 }
 262
 263 static void GetLoginBehavior(int *pRetryInterval, BOOLEAN *pFailSilently)
 264 {
 265         long result;
 266         HKEY hKey;
 267         DWORD dummyLen;
 268
 269         result = RegOpenKeyEx(HKEY_LOCAL_MACHINE, REG_CLIENT_PARMS_KEY, 0, KEY_QUERY_VALUE, &hKey);
 270         if (result != ERROR_SUCCESS) {
 271                 *pRetryInterval = DEFAULT_RETRY_INTERVAL;
 272                 *pFailSilently = DEFAULT_FAIL_SILENTLY;
 273                 return;
 274         }
 275
 276         result = RegQueryValueEx(hKey, REG_CLIENT_RETRY_INTERVAL_PARM, 0, 0, (BYTE *)pRetryInterval, &dummyLen);
 277         if (result != ERROR_SUCCESS)
 278                 *pRetryInterval = DEFAULT_RETRY_INTERVAL;
 279
 280         result = RegQueryValueEx(hKey, REG_CLIENT_FAIL_SILENTLY_PARM, 0, 0, (BYTE *)pFailSilently, &dummyLen);
 281         if (result != ERROR_SUCCESS)
 282                 *pFailSilently = DEFAULT_FAIL_SILENTLY;
 283
 284         /* Make sure this is really a bool value in the strict sense*/
 285         *pFailSilently = !!*pFailSilently;
 286
 287         RegCloseKey(hKey);
 288 }
 289
 290 BOOL IsServiceRunning (void)
 291 {
 292       SERVICE_STATUS Status;
 293       SC_HANDLE hManager;
 294       memset (&Status, 0x00, sizeof(Status));
 295       Status.dwCurrentState = SERVICE_STOPPED;
 296
 297       if ((hManager = OpenSCManager (NULL, NULL, GENERIC_READ)) != NULL)
 298          {
 299          SC_HANDLE hService;
 300          if ((hService = OpenService (hManager, TEXT("TransarcAFSDaemon"), GENERIC_READ)) != NULL)
 301             {
 302             QueryServiceStatus (hService, &Status);
 303             CloseServiceHandle (hService);
 304             }
 305
 306          CloseServiceHandle (hManager);
 307          }
 308                  DebugEvent("AFS AfsLogon - Test Service Running","Return Code[%x] ?Running[%d]",Status.dwCurrentState,(Status.dwCurrentState == SERVICE_RUNNING));
 309                 return (Status.dwCurrentState == SERVICE_RUNNING);
 310 }
 311
 312 DWORD APIENTRY NPLogonNotify(
 313         PLUID lpLogonId,
 314         LPCWSTR lpAuthentInfoType,
 315         LPVOID lpAuthentInfo,
 316         LPCWSTR lpPreviousAuthentInfoType,
 317         LPVOID lpPreviousAuthentInfo,
 318         LPWSTR lpStationName,
 319         LPVOID StationHandle,
 320         LPWSTR *lpLogonScript)
 321 {
 322         char uname[256];
 323         char *ctemp;
 324         char password[256];
 325         char cell[256];
 326         MSV1_0_INTERACTIVE_LOGON *IL;
 327         DWORD code;
 328         int pw_exp;
 329         char *reason;
 330         BOOLEAN interactive;
 331         BOOLEAN flag;
 332         DWORD LSPtype, LSPsize;
 333         HKEY NPKey;
 334         HWND hwndOwner = (HWND)StationHandle;
 335     BOOLEAN failSilently;
 336     int retryInterval;
 337     int sleepInterval = DEFAULT_SLEEP_INTERVAL;        /* seconds        */
 338     BOOLEAN afsWillAutoStart;
 339         CHAR RandomName[MAXRANDOMNAMELEN];
 340         *lpLogonScript=NULL;
 341
 342         IL = (MSV1_0_INTERACTIVE_LOGON *) lpAuthentInfo;
 343
 344         /* Are we interactive? */
 345         interactive = (wcscmp(lpStationName, L"WinSta0") == 0);
 346
 347         /* Convert from Unicode to ANSI */
 348         wcstombs(uname, IL->UserName.Buffer, 256);
 349         wcstombs(password, IL->Password.Buffer, 256);
 350
 351         /* Make sure AD-DOMANS sent from login that is sent to us is striped */
 352         ctemp = strchr(uname, '@');
 353         if (ctemp) *ctemp = 0;
 354
 355         (void) RegOpenKeyEx(HKEY_LOCAL_MACHINE, REG_CLIENT_PARMS_KEY,
 356                     0, KEY_QUERY_VALUE, &NPKey);
 357         LSPsize=sizeof(TraceOption);
 358         RegQueryValueEx(NPKey, "TraceOption", NULL,
 359                                 &LSPtype, (LPBYTE)&TraceOption, &LSPsize);
 360          RegCloseKey (NPKey);
 361
 362         /*
 363          * Get Logon OPTIONS
 364          */
 365
 366         (void) RegOpenKeyEx(HKEY_LOCAL_MACHINE, REG_CLIENT_PROVIDER_KEY,
 367                     0, KEY_QUERY_VALUE, &NPKey);
 368
 369         LSPsize=sizeof(LogonOption);
 370         code = RegQueryValueEx(NPKey, "LogonOptions", NULL,
 371                                 &LSPtype, (LPBYTE)&LogonOption, &LSPsize);
 372
 373         RegCloseKey (NPKey);
 374         if ((code!=0) || (LSPtype!=REG_DWORD))
 375                 LogonOption=LOGON_OPTION_INTEGRATED;    /*default to integrated logon only*/
 376         DebugEvent("AFS AfsLogon - NPLogonNotify","LogonOption[%x], Service AutoStart[%d]",LogonOption,AFSWillAutoStart());
 377         /* Check for zero length password if integrated logon*/
 378         if ( ISLOGONINTEGRATED(LogonOption) && (password[0] == 0) )  {
 379                 code = GT_PW_NULL;
 380                 reason = "zero length password is illegal";
 381                 code=0;
 382         }
 383
 384         /* Get cell name if doing integrated logon */
 385         if (ISLOGONINTEGRATED(LogonOption))
 386         {
 387                 code = cm_GetRootCellName(cell);
 388                 if (code < 0) {
 389                         code = KTC_NOCELL;
 390                         reason = "unknown cell";
 391                         code=0;
 392                 }
 393         }
 394
 395     /* Get user specified login behavior (or defaults) */
 396     GetLoginBehavior(&retryInterval, &failSilently);
 397
 398     afsWillAutoStart = AFSWillAutoStart();
 399
 400     *lpLogonScript = GetLogonScript(GenRandomName(RandomName)); /*only do if high security option is on*/
 401
 402
 403     /* loop until AFS is started. */
 404     while (TRUE) {
 405         code=0;
 406
 407         /* is service started yet?*/
 408         if (ISLOGONINTEGRATED(LogonOption) && !ISHIGHSECURITY(LogonOption))     /* if Integrated Logon only */
 409                 {
 410                         DebugEvent("AFS AfsLogon - ka_UserAuthenticateGeneral2","Code[%x],uame[%s] Cell[%s]",code,uname,cell);
 411                         code = ka_UserAuthenticateGeneral2(
 412                                 KA_USERAUTH_VERSION+KA_USERAUTH_AUTHENT_LOGON,
 413                                 uname, "", cell, password,uname, 0, &pw_exp, 0,
 414                                 &reason);
 415                         DebugEvent("AFS AfsLogon - (INTEGERTED only)ka_UserAuthenticateGeneral2","Code[%x]",code);
 416                 } else if (ISLOGONINTEGRATED(LogonOption) && ISHIGHSECURITY(LogonOption))       /* if Integrated Logon and High Security pass random generated name*/
 417                 {
 418                         code = ka_UserAuthenticateGeneral2(
 419                                 KA_USERAUTH_VERSION+KA_USERAUTH_AUTHENT_LOGON,
 420                                 uname, "", cell, password,RandomName, 0, &pw_exp, 0,
 421                                 &reason);
 422                         DebugEvent("AFS AfsLogon - (Both)ka_UserAuthenticateGeneral2","Code[%x],RandomName[%s]",code,RandomName);
 423                 } else {  /*JUST check to see if its running*/
 424                     if (IsServiceRunning())
 425                         break;
 426                     code = KTC_NOCM;
 427                     if (!afsWillAutoStart)
 428                         break;
 429                 }
 430
 431                 /* If we've failed because the client isn't running yet and the
 432                  * client is set to autostart (and therefore it makes sense for
 433                  * us to wait for it to start) then sleep a while and try again.
 434                  * If the error was something else, then give up. */
 435                 if (code != KTC_NOCM && code != KTC_NOCMRPC || !afsWillAutoStart)
 436                         break;
 437
 438                 /* If the retry interval has expired and we still aren't
 439                  * logged in, then just give up if we are not in interactive
 440                  * mode or the failSilently flag is set, otherwise let the
 441                  * user know we failed and give them a chance to try again. */
 442         if (retryInterval <= 0) {
 443              reason = "AFS not running";
 444              if (!interactive || failSilently)
 445                  break;
 446                         flag = MessageBox(hwndOwner,
 447                                 "AFS is still starting.  Retry?",
 448                                 "AFS Logon",
 449                                 MB_ICONQUESTION | MB_RETRYCANCEL);
 450                         if (flag == IDCANCEL)
 451                                         break;
 452
 453                         /* Wait just a little while and try again */
 454                  retryInterval = sleepInterval = DEFAULT_SLEEP_INTERVAL;
 455         }
 456
 457         if (retryInterval < sleepInterval)
 458                         sleepInterval = retryInterval;
 459
 460                 Sleep(sleepInterval * 1000);
 461
 462         retryInterval -= sleepInterval;
 463      }
 464
 465         if (code) {
 466                 char msg[128];
 467         sprintf(msg, "Integrated login failed: %s", reason);
 468
 469                 if (interactive && !failSilently)
 470                         MessageBox(hwndOwner, msg, "AFS Logon", MB_OK);
 471                 else {
 472                         HANDLE h;
 473                         char *ptbuf[1];
 474
 475                         h = RegisterEventSource(NULL, AFS_DAEMON_EVENT_NAME);
 476                         ptbuf[0] = msg;
 477                         ReportEvent(h, EVENTLOG_WARNING_TYPE, 0, 1008, NULL,
 478                                     1, 0, ptbuf, NULL);
 479                         DeregisterEventSource(h);
 480                 }
 481             code = MapAuthError(code);
 482                 SetLastError(code);
 483                 if (ISHIGHSECURITY(LogonOption) && (code!=0))
 484                 {
 485                         if (*lpLogonScript)
 486                                 LocalFree(*lpLogonScript);
 487                         *lpLogonScript = NULL;
 488                         if (!(afsWillAutoStart || ISLOGONINTEGRATED(LogonOption)))      // its not running, so if not autostart or integrated logon then just skip
 489                                 return 0;
 490
 491                 }
 492         }
 493         DebugEvent("AFS AfsLogon - Exit","Return Code[%x]",code);
 494         return code;
 495 }
 496
 497 DWORD APIENTRY NPPasswordChangeNotify(
 498         LPCWSTR lpAuthentInfoType,
 499         LPVOID lpAuthentInfo,
 500         LPCWSTR lpPreviousAuthentInfoType,
 501         LPVOID lpPreviousAuthentInfo,
 502         LPWSTR lpStationName,
 503         LPVOID StationHandle,
 504         DWORD dwChangeInfo)
 505 {
 506         DebugEvent0("AFS AfsLogon - NPPasswordChangeNotify");
 507         return 0;
 508 }
 509