source/nsswitch/winbind_nss_irix.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Windows NT Domain nsswitch module
   5
   6    Copyright (C) Tim Potter 2000
   7    Copyright (C) James Peach 2006
   8
   9    This library is free software; you can redistribute it and/or
  10    modify it under the terms of the GNU Library General Public
  11    License as published by the Free Software Foundation; either
  12    version 2 of the License, or (at your option) any later version.
  13
  14    This library is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17    Library General Public License for more details.
  18
  19    You should have received a copy of the GNU Library General Public
  20    License along with this library; if not, write to the
  21    Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  22    Boston, MA  02111-1307, USA.
  23 */
  24
  25 #include "winbind_client.h"
  26
  27 #ifndef PRINTF_ATTRIBUTE
  28 #define PRINTF_ATTRIBUTE(m, n)
  29 #endif
  30
  31 #ifndef HAVE_ASPRINTF_DECL
  32 /*PRINTFLIKE2 */
  33 int asprintf(char **,const char *, ...) PRINTF_ATTRIBUTE(2,3);
  34 #endif
  35
  36 #ifdef HAVE_NS_API_H
  37 #undef VOLATILE
  38 #undef STATIC
  39 #undef DYNAMIC
  40 #include <ns_daemon.h>
  41 #endif
  42
  43 /* Maximum number of users to pass back over the unix domain socket
  44    per call. This is not a static limit on the total number of users
  45    or groups returned in total. */
  46
  47 #define MAX_GETPWENT_USERS 250
  48 #define MAX_GETGRENT_USERS 250
  49
  50 /* Prototypes from wb_common.c */
  51
  52 extern int winbindd_fd;
  53
  54 #ifdef HAVE_NS_API_H
  55
  56 /* IRIX version */
  57
  58 static int send_next_request(nsd_file_t *, struct winbindd_request *);
  59 static int do_list(int state, nsd_file_t *rq);
  60
  61 static nsd_file_t *current_rq = NULL;
  62 static int current_winbind_xid = 0;
  63 static int next_winbind_xid = 0;
  64
  65 typedef struct winbind_xid {
  66         int                     xid;
  67         nsd_file_t              *rq;
  68         struct winbindd_request *request;
  69         struct winbind_xid      *next;
  70 } winbind_xid_t;
  71
  72 static winbind_xid_t *winbind_xids = (winbind_xid_t *)0;
  73
  74 static int
  75 winbind_xid_new(int xid, nsd_file_t *rq, struct winbindd_request *request)
  76 {
  77         winbind_xid_t *new;
  78
  79         nsd_logprintf(NSD_LOG_LOW,
  80                 "entering winbind_xid_new xid = %d rq = 0x%x, request = 0x%x\n",
  81                 xid, rq, request);
  82         new = (winbind_xid_t *)nsd_calloc(1,sizeof(winbind_xid_t));
  83         if (!new) {
  84                 nsd_logprintf(NSD_LOG_RESOURCE,"winbind_xid_new: failed malloc\n");
  85                 return NSD_ERROR;
  86         }
  87
  88         new->xid = xid;
  89         new->rq = rq;
  90         new->request = request;
  91         new->next = winbind_xids;
  92         winbind_xids = new;
  93
  94         return NSD_CONTINUE;
  95 }
  96
  97 /*
  98 ** This routine will look down the xid list and return the request
  99 ** associated with an xid.  We remove the record if it is found.
 100 */
 101 nsd_file_t *
 102 winbind_xid_lookup(int xid, struct winbindd_request **requestp)
 103 {
 104         winbind_xid_t **last, *dx;
 105         nsd_file_t *result=0;
 106
 107         for (last = &winbind_xids, dx = winbind_xids; dx && (dx->xid != xid);
 108             last = &dx->next, dx = dx->next);
 109         if (dx) {
 110                 *last = dx->next;
 111                 result = dx->rq;
 112                 *requestp = dx->request;
 113                 SAFE_FREE(dx);
 114         }
 115         nsd_logprintf(NSD_LOG_LOW,
 116                 "entering winbind_xid_lookup xid = %d rq = 0x%x, request = 0x%x\n",
 117                 xid, result, dx->request);
 118
 119         return result;
 120 }
 121
 122 static int
 123 winbind_startnext_timeout(nsd_file_t **rqp, nsd_times_t *to)
 124 {
 125         nsd_file_t *rq;
 126         struct winbindd_request *request;
 127
 128         nsd_logprintf(NSD_LOG_MIN, "timeout (winbind startnext)\n");
 129         rq = to->t_file;
 130         *rqp = rq;
 131         nsd_timeout_remove(rq);
 132         request = to->t_clientdata;
 133         return(send_next_request(rq, request));
 134 }
 135
 136 static void
 137 dequeue_request(void)
 138 {
 139         nsd_file_t *rq;
 140         struct winbindd_request *request;
 141
 142         /*
 143          * Check for queued requests
 144          */
 145         if (winbind_xids) {
 146             nsd_logprintf(NSD_LOG_MIN, "timeout (winbind) unqueue xid %d\n",
 147                         current_winbind_xid);
 148             rq = winbind_xid_lookup(current_winbind_xid++, &request);
 149             /* cause a timeout on the queued request so we can send it */
 150             nsd_timeout_new(rq,1,winbind_startnext_timeout,request);
 151         }
 152 }
 153
 154 static int
 155 do_request(nsd_file_t *rq, struct winbindd_request *request)
 156 {
 157         if (winbind_xids == NULL) {
 158                 /*
 159                  * No outstanding requests.
 160                  * Send off the request to winbindd
 161                  */
 162                 nsd_logprintf(NSD_LOG_MIN, "lookup (winbind) sending request\n");
 163                 return(send_next_request(rq, request));
 164         } else {
 165                 /*
 166                  * Just queue it up for now - previous callout or timout
 167                  * will start it up
 168                  */
 169                 nsd_logprintf(NSD_LOG_MIN,
 170                         "lookup (winbind): queue request xid = %d\n",
 171                         next_winbind_xid);
 172                 return(winbind_xid_new(next_winbind_xid++, rq, request));
 173         }
 174 }
 175
 176 static int
 177 winbind_callback(nsd_file_t **rqp, int fd)
 178 {
 179         struct winbindd_response response;
 180         nsd_file_t *rq;
 181         NSS_STATUS status;
 182         char * result = NULL;
 183         size_t rlen;
 184
 185         dequeue_request();
 186
 187         nsd_logprintf(NSD_LOG_MIN, "entering callback (winbind)\n");
 188
 189         rq = current_rq;
 190         *rqp = rq;
 191
 192         nsd_timeout_remove(rq);
 193         nsd_callback_remove(fd);
 194
 195         ZERO_STRUCT(response);
 196         status = winbindd_get_response(&response);
 197
 198         if (status != NSS_STATUS_SUCCESS) {
 199                 /* free any extra data area in response structure */
 200                 free_response(&response);
 201                 nsd_logprintf(NSD_LOG_MIN,
 202                         "callback (winbind) returning not found, status = %d\n",
 203                         status);
 204
 205                 switch (status) {
 206                     case NSS_STATUS_UNAVAIL:
 207                         rq->f_status = NS_UNAVAIL;
 208                         break;
 209                     case NSS_STATUS_TRYAGAIN:
 210                         rq->f_status = NS_TRYAGAIN;
 211                         break;
 212                     case NSS_STATUS_NOTFOUND:
 213                         /* FALLTHRU */
 214                     default:
 215                         rq->f_status = NS_NOTFOUND;
 216                 }
 217
 218                 return NSD_NEXT;
 219         }
 220
 221         switch ((int)rq->f_cmd_data) {
 222             case WINBINDD_WINS_BYNAME:
 223             case WINBINDD_WINS_BYIP:
 224                 nsd_logprintf(NSD_LOG_MIN,
 225                         "callback (winbind) WINS_BYNAME | WINS_BYIP\n");
 226
 227                 rlen = asprintf(&result, "%s\n", response.data.winsresp);
 228                 if (rlen == 0 || result == NULL) {
 229                         return NSD_ERROR;
 230                 }
 231
 232                 free_response(&response);
 233
 234                 nsd_logprintf(NSD_LOG_MIN, "    %s\n", result);
 235                 nsd_set_result(rq, NS_SUCCESS, result, rlen, DYNAMIC);
 236                 return NSD_OK;
 237
 238             case WINBINDD_GETPWUID:
 239             case WINBINDD_GETPWNAM:
 240             {
 241                 struct winbindd_pw *pw = &response.data.pw;
 242
 243                 nsd_logprintf(NSD_LOG_MIN,
 244                         "callback (winbind) GETPWUID | GETPWUID\n");
 245
 246                 rlen = asprintf(&result,"%s:%s:%d:%d:%s:%s:%s\n",
 247                                 pw->pw_name,
 248                                 pw->pw_passwd,
 249                                 pw->pw_uid,
 250                                 pw->pw_gid,
 251                                 pw->pw_gecos,
 252                                 pw->pw_dir,
 253                                 pw->pw_shell);
 254                 if (rlen == 0 || result == NULL)
 255                     return NSD_ERROR;
 256
 257                 free_response(&response);
 258
 259                 nsd_logprintf(NSD_LOG_MIN, "    %s\n", result);
 260                 nsd_set_result(rq, NS_SUCCESS, result, rlen, DYNAMIC);
 261                 return NSD_OK;
 262             }
 263
 264             case WINBINDD_GETGRNAM:
 265             case WINBINDD_GETGRGID:
 266             {
 267                 const struct winbindd_gr *gr = &response.data.gr;
 268                 const char * members;
 269
 270                 nsd_logprintf(NSD_LOG_MIN,
 271                         "callback (winbind) GETGRNAM | GETGRGID\n");
 272
 273                 if (gr->num_gr_mem && response.extra_data.data) {
 274                         members = response.extra_data.data;
 275                 } else {
 276                         members = "";
 277                 }
 278
 279                 rlen = asprintf(&result, "%s:%s:%d:%s\n",
 280                             gr->gr_name, gr->gr_passwd, gr->gr_gid, members);
 281                 if (rlen == 0 || result == NULL)
 282                     return NSD_ERROR;
 283
 284                 free_response(&response);
 285
 286                 nsd_logprintf(NSD_LOG_MIN, "    %s\n", result);
 287                 nsd_set_result(rq, NS_SUCCESS, result, rlen, DYNAMIC);
 288                 return NSD_OK;
 289             }
 290
 291             case WINBINDD_SETGRENT:
 292             case WINBINDD_SETPWENT:
 293                 nsd_logprintf(NSD_LOG_MIN,
 294                         "callback (winbind) SETGRENT | SETPWENT\n");
 295                 free_response(&response);
 296                 return(do_list(1,rq));
 297
 298             case WINBINDD_GETGRENT:
 299             case WINBINDD_GETGRLST:
 300             {
 301                 int entries;
 302
 303                 nsd_logprintf(NSD_LOG_MIN,
 304                     "callback (winbind) GETGRENT | GETGRLIST %d responses\n",
 305                     response.data.num_entries);
 306
 307                 if (response.data.num_entries) {
 308                     const struct winbindd_gr *gr = &response.data.gr;
 309                     const char * members;
 310                     fstring grp_name;
 311                     int     i;
 312
 313                     gr = (struct winbindd_gr *)response.extra_data.data;
 314                     if (! gr ) {
 315                         nsd_logprintf(NSD_LOG_MIN, "     no extra_data\n");
 316                         free_response(&response);
 317                         return NSD_ERROR;
 318                     }
 319
 320                     members = (char *)response.extra_data.data +
 321                         (response.data.num_entries * sizeof(struct winbindd_gr));
 322
 323                     for (i = 0; i < response.data.num_entries; i++) {
 324                         snprintf(grp_name, sizeof(grp_name) - 1, "%s:%s:%d:",
 325                                     gr->gr_name, gr->gr_passwd, gr->gr_gid);
 326
 327                         nsd_append_element(rq, NS_SUCCESS, result, rlen);
 328                         nsd_append_result(rq, NS_SUCCESS,
 329                                 &members[gr->gr_mem_ofs],
 330                                 strlen(&members[gr->gr_mem_ofs]));
 331
 332                         /* Don't log the whole list, because it might be
 333                          * _really_ long and we probably don't want to clobber
 334                          * the log with it.
 335                          */
 336                         nsd_logprintf(NSD_LOG_MIN, "    %s (...)\n", grp_name);
 337
 338                         gr++;
 339                     }
 340                 }
 341
 342                 entries = response.data.num_entries;
 343                 free_response(&response);
 344                 if (entries < MAX_GETPWENT_USERS)
 345                     return(do_list(2,rq));
 346                 else
 347                     return(do_list(1,rq));
 348             }
 349
 350             case WINBINDD_GETPWENT:
 351             {
 352                 int entries;
 353
 354                 nsd_logprintf(NSD_LOG_MIN,
 355                         "callback (winbind) GETPWENT  %d responses\n",
 356                         response.data.num_entries);
 357
 358                 if (response.data.num_entries) {
 359                     struct winbindd_pw *pw = &response.data.pw;
 360                     int i;
 361
 362                     pw = (struct winbindd_pw *)response.extra_data.data;
 363                     if (! pw ) {
 364                         nsd_logprintf(NSD_LOG_MIN, "     no extra_data\n");
 365                         free_response(&response);
 366                         return NSD_ERROR;
 367                     }
 368                     for (i = 0; i < response.data.num_entries; i++) {
 369                         result = NULL;
 370                         rlen = asprintf(&result, "%s:%s:%d:%d:%s:%s:%s",
 371                                         pw->pw_name,
 372                                         pw->pw_passwd,
 373                                         pw->pw_uid,
 374                                         pw->pw_gid,
 375                                         pw->pw_gecos,
 376                                         pw->pw_dir,
 377                                         pw->pw_shell);
 378
 379                         if (rlen != 0 && result != NULL) {
 380                             nsd_logprintf(NSD_LOG_MIN, "    %s\n",result);
 381                             nsd_append_element(rq, NS_SUCCESS, result, rlen);
 382                             free(result);
 383                         }
 384
 385                         pw++;
 386                     }
 387                 }
 388
 389                 entries = response.data.num_entries;
 390                 free_response(&response);
 391                 if (entries < MAX_GETPWENT_USERS)
 392                     return(do_list(2,rq));
 393                 else
 394                     return(do_list(1,rq));
 395             }
 396
 397             case WINBINDD_ENDGRENT:
 398             case WINBINDD_ENDPWENT:
 399                 nsd_logprintf(NSD_LOG_MIN, "callback (winbind) ENDGRENT | ENDPWENT\n");
 400                 nsd_append_element(rq, NS_SUCCESS, "\n", 1);
 401                 free_response(&response);
 402                 return NSD_NEXT;
 403
 404             default:
 405                 free_response(&response);
 406                 nsd_logprintf(NSD_LOG_MIN, "callback (winbind) invalid command %d\n", (int)rq->f_cmd_data);
 407                 return NSD_NEXT;
 408         }
 409 }
 410
 411 static int
 412 winbind_timeout(nsd_file_t **rqp, nsd_times_t *to)
 413 {
 414         nsd_file_t *rq;
 415
 416         dequeue_request();
 417
 418         nsd_logprintf(NSD_LOG_MIN, "timeout (winbind)\n");
 419
 420         rq = to->t_file;
 421         *rqp = rq;
 422
 423         /* Remove the callback and timeout */
 424         nsd_callback_remove(winbindd_fd);
 425         nsd_timeout_remove(rq);
 426
 427         rq->f_status = NS_NOTFOUND;
 428         return NSD_NEXT;
 429 }
 430
 431 static int
 432 send_next_request(nsd_file_t *rq, struct winbindd_request *request)
 433 {
 434         NSS_STATUS status;
 435         long timeout;
 436
 437         switch (rq->f_index) {
 438                 case LOOKUP:
 439                         timeout = nsd_attr_fetch_long(rq->f_attrs,
 440                                         "lookup_timeout", 10, 10);
 441                         break;
 442                 case LIST:
 443                         timeout = nsd_attr_fetch_long(rq->f_attrs,
 444                                         "list_timeout", 10, 10);
 445                         break;
 446                 default:
 447                         nsd_logprintf(NSD_LOG_OPER,
 448                                 "send_next_request (winbind) "
 449                                 "invalid request type %d\n", rq->f_index);
 450                         rq->f_status = NS_BADREQ;
 451                         return NSD_NEXT;
 452         }
 453
 454         nsd_logprintf(NSD_LOG_MIN,
 455                 "send_next_request (winbind) %d, timeout = %d sec\n",
 456                         rq->f_cmd_data, timeout);
 457         status = winbindd_send_request((int)rq->f_cmd_data,request);
 458         SAFE_FREE(request);
 459
 460         if (status != NSS_STATUS_SUCCESS) {
 461                 nsd_logprintf(NSD_LOG_MIN,
 462                         "send_next_request (winbind) error status = %d\n",
 463                         status);
 464                 rq->f_status = status;
 465                 return NSD_NEXT;
 466         }
 467
 468         current_rq = rq;
 469
 470         /*
 471          * Set up callback and timeouts
 472          */
 473         nsd_logprintf(NSD_LOG_MIN, "send_next_request (winbind) fd = %d\n",
 474                 winbindd_fd);
 475
 476         nsd_callback_new(winbindd_fd, winbind_callback, NSD_READ);
 477         nsd_timeout_new(rq, timeout * 1000, winbind_timeout, NULL);
 478         return NSD_CONTINUE;
 479 }
 480
 481 int init(void)
 482 {
 483         nsd_logprintf(NSD_LOG_MIN, "entering init (winbind)\n");
 484         return(NSD_OK);
 485 }
 486
 487 int lookup(nsd_file_t *rq)
 488 {
 489         char *map;
 490         char *key;
 491         struct winbindd_request *request;
 492
 493         nsd_logprintf(NSD_LOG_MIN, "entering lookup (winbind)\n");
 494         if (! rq)
 495                 return NSD_ERROR;
 496
 497         map = nsd_attr_fetch_string(rq->f_attrs, "table", (char*)0);
 498         key = nsd_attr_fetch_string(rq->f_attrs, "key", (char*)0);
 499         if (! map || ! key) {
 500                 nsd_logprintf(NSD_LOG_MIN, "lookup (winbind) table or key not defined\n");
 501                 rq->f_status = NS_BADREQ;
 502                 return NSD_ERROR;
 503         }
 504
 505         nsd_logprintf(NSD_LOG_MIN, "lookup (winbind %s)\n",map);
 506
 507         request = (struct winbindd_request *)nsd_calloc(1,sizeof(struct winbindd_request));
 508         if (! request) {
 509                 nsd_logprintf(NSD_LOG_RESOURCE,
 510                         "lookup (winbind): failed malloc\n");
 511                 return NSD_ERROR;
 512         }
 513
 514         if (strcasecmp(map,"passwd.byuid") == 0) {
 515             request->data.uid = atoi(key);
 516             rq->f_cmd_data = (void *)WINBINDD_GETPWUID;
 517         } else if (strcasecmp(map,"passwd.byname") == 0) {
 518             strncpy(request->data.username, key,
 519                 sizeof(request->data.username) - 1);
 520             request->data.username[sizeof(request->data.username) - 1] = '\0';
 521             rq->f_cmd_data = (void *)WINBINDD_GETPWNAM;
 522         } else if (strcasecmp(map,"group.byname") == 0) {
 523             strncpy(request->data.groupname, key,
 524                 sizeof(request->data.groupname) - 1);
 525             request->data.groupname[sizeof(request->data.groupname) - 1] = '\0';
 526             rq->f_cmd_data = (void *)WINBINDD_GETGRNAM;
 527         } else if (strcasecmp(map,"group.bygid") == 0) {
 528             request->data.gid = atoi(key);
 529             rq->f_cmd_data = (void *)WINBINDD_GETGRGID;
 530         } else if (strcasecmp(map,"hosts.byname") == 0) {
 531             strncpy(request->data.winsreq, key, sizeof(request->data.winsreq) - 1);
 532             request->data.winsreq[sizeof(request->data.winsreq) - 1] = '\0';
 533             rq->f_cmd_data = (void *)WINBINDD_WINS_BYNAME;
 534         } else if (strcasecmp(map,"hosts.byaddr") == 0) {
 535             strncpy(request->data.winsreq, key, sizeof(request->data.winsreq) - 1);
 536             request->data.winsreq[sizeof(request->data.winsreq) - 1] = '\0';
 537             rq->f_cmd_data = (void *)WINBINDD_WINS_BYIP;
 538         } else {
 539                 /*
 540                  * Don't understand this map - just return not found
 541                  */
 542                 nsd_logprintf(NSD_LOG_MIN, "lookup (winbind) unknown table\n");
 543                 SAFE_FREE(request);
 544                 rq->f_status = NS_NOTFOUND;
 545                 return NSD_NEXT;
 546         }
 547
 548         return(do_request(rq, request));
 549 }
 550
 551 int list(nsd_file_t *rq)
 552 {
 553         char *map;
 554
 555         nsd_logprintf(NSD_LOG_MIN, "entering list (winbind)\n");
 556         if (! rq)
 557                 return NSD_ERROR;
 558
 559         map = nsd_attr_fetch_string(rq->f_attrs, "table", (char*)0);
 560         if (! map ) {
 561                 nsd_logprintf(NSD_LOG_MIN, "list (winbind) table not defined\n");
 562                 rq->f_status = NS_BADREQ;
 563                 return NSD_ERROR;
 564         }
 565
 566         nsd_logprintf(NSD_LOG_MIN, "list (winbind %s)\n",map);
 567
 568         return (do_list(0,rq));
 569 }
 570
 571 static int
 572 do_list(int state, nsd_file_t *rq)
 573 {
 574         char *map;
 575         struct winbindd_request *request;
 576
 577         nsd_logprintf(NSD_LOG_MIN, "entering do_list (winbind) state = %d\n",state);
 578
 579         map = nsd_attr_fetch_string(rq->f_attrs, "table", (char*)0);
 580         request = (struct winbindd_request *)nsd_calloc(1,sizeof(struct winbindd_request));
 581         if (! request) {
 582                 nsd_logprintf(NSD_LOG_RESOURCE,
 583                         "do_list (winbind): failed malloc\n");
 584                 return NSD_ERROR;
 585         }
 586
 587         if (strcasecmp(map,"passwd.byname") == 0) {
 588             switch (state) {
 589                 case 0:
 590                     rq->f_cmd_data = (void *)WINBINDD_SETPWENT;
 591                     break;
 592                 case 1:
 593                     request->data.num_entries = MAX_GETPWENT_USERS;
 594                     rq->f_cmd_data = (void *)WINBINDD_GETPWENT;
 595                     break;
 596                 case 2:
 597                     rq->f_cmd_data = (void *)WINBINDD_ENDPWENT;
 598                     break;
 599                 default:
 600                     nsd_logprintf(NSD_LOG_MIN, "do_list (winbind) unknown state\n");
 601                     SAFE_FREE(request);
 602                     rq->f_status = NS_NOTFOUND;
 603                     return NSD_NEXT;
 604             }
 605         } else if (strcasecmp(map,"group.byname") == 0) {
 606             switch (state) {
 607                 case 0:
 608                     rq->f_cmd_data = (void *)WINBINDD_SETGRENT;
 609                     break;
 610                 case 1:
 611                     request->data.num_entries = MAX_GETGRENT_USERS;
 612                     rq->f_cmd_data = (void *)WINBINDD_GETGRENT;
 613                     break;
 614                 case 2:
 615                     rq->f_cmd_data = (void *)WINBINDD_ENDGRENT;
 616                     break;
 617                 default:
 618                     nsd_logprintf(NSD_LOG_MIN, "do_list (winbind) unknown state\n");
 619                     SAFE_FREE(request);
 620                     rq->f_status = NS_NOTFOUND;
 621                     return NSD_NEXT;
 622             }
 623         } else {
 624                 /*
 625                  * Don't understand this map - just return not found
 626                  */
 627                 nsd_logprintf(NSD_LOG_MIN, "do_list (winbind) unknown table\n");
 628                 SAFE_FREE(request);
 629                 rq->f_status = NS_NOTFOUND;
 630                 return NSD_NEXT;
 631         }
 632
 633         return(do_request(rq, request));
 634 }
 635
 636 #endif /* HAVE_NS_API_H */