source3/lib/smbldap.c

   1 /*
   2    Unix SMB/CIFS mplementation.
   3    LDAP protocol helper functions for SAMBA
   4    Copyright (C) Jean François Micouleau        1998
   5    Copyright (C) Gerald Carter                  2001-2003
   6    Copyright (C) Shahms King                    2001
   7    Copyright (C) Andrew Bartlett                2002-2003
   8    Copyright (C) Stefan (metze) Metzmacher      2002-2003
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 2 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23
  24 */
  25
  26 #include "includes.h"
  27 #include "smbldap.h"
  28
  29 #ifndef LDAP_OPT_SUCCESS
  30 #define LDAP_OPT_SUCCESS 0
  31 #endif
  32
  33 /* Try not to hit the up or down server forever */
  34
  35 #define SMBLDAP_DONT_PING_TIME 10       /* ping only all 10 seconds */
  36 #define SMBLDAP_NUM_RETRIES 8           /* retry only 8 times */
  37
  38 #define SMBLDAP_IDLE_TIME 150           /* After 2.5 minutes disconnect */
  39
  40
  41 /* attributes used by Samba 2.2 */
  42
  43 ATTRIB_MAP_ENTRY attrib_map_v22[] = {
  44         { LDAP_ATTR_UID,                "uid"           },
  45         { LDAP_ATTR_UIDNUMBER,          LDAP_ATTRIBUTE_UIDNUMBER},
  46         { LDAP_ATTR_GIDNUMBER,          LDAP_ATTRIBUTE_GIDNUMBER},
  47         { LDAP_ATTR_UNIX_HOME,          "homeDirectory" },
  48         { LDAP_ATTR_PWD_LAST_SET,       "pwdLastSet"    },
  49         { LDAP_ATTR_PWD_CAN_CHANGE,     "pwdCanChange"  },
  50         { LDAP_ATTR_PWD_MUST_CHANGE,    "pwdMustChange" },
  51         { LDAP_ATTR_LOGON_TIME,         "logonTime"     },
  52         { LDAP_ATTR_LOGOFF_TIME,        "logoffTime"    },
  53         { LDAP_ATTR_KICKOFF_TIME,       "kickoffTime"   },
  54         { LDAP_ATTR_CN,                 "cn"            },
  55         { LDAP_ATTR_DISPLAY_NAME,       "displayName"   },
  56         { LDAP_ATTR_HOME_PATH,          "smbHome"       },
  57         { LDAP_ATTR_HOME_DRIVE,         "homeDrives"    },
  58         { LDAP_ATTR_LOGON_SCRIPT,       "scriptPath"    },
  59         { LDAP_ATTR_PROFILE_PATH,       "profilePath"   },
  60         { LDAP_ATTR_DESC,               "description"   },
  61         { LDAP_ATTR_USER_WKS,           "userWorkstations"},
  62         { LDAP_ATTR_USER_RID,           "rid"           },
  63         { LDAP_ATTR_PRIMARY_GROUP_RID,  "primaryGroupID"},
  64         { LDAP_ATTR_LMPW,               "lmPassword"    },
  65         { LDAP_ATTR_NTPW,               "ntPassword"    },
  66         { LDAP_ATTR_DOMAIN,             "domain"        },
  67         { LDAP_ATTR_OBJCLASS,           "objectClass"   },
  68         { LDAP_ATTR_ACB_INFO,           "acctFlags"     },
  69         { LDAP_ATTR_LIST_END,           NULL            }
  70 };
  71
  72 /* attributes used by Samba 3.0's sambaSamAccount */
  73
  74 ATTRIB_MAP_ENTRY attrib_map_v30[] = {
  75         { LDAP_ATTR_UID,                "uid"                   },
  76         { LDAP_ATTR_UIDNUMBER,          LDAP_ATTRIBUTE_UIDNUMBER},
  77         { LDAP_ATTR_GIDNUMBER,          LDAP_ATTRIBUTE_GIDNUMBER},
  78         { LDAP_ATTR_UNIX_HOME,          "homeDirectory"         },
  79         { LDAP_ATTR_PWD_LAST_SET,       "sambaPwdLastSet"       },
  80         { LDAP_ATTR_PWD_CAN_CHANGE,     "sambaPwdCanChange"     },
  81         { LDAP_ATTR_PWD_MUST_CHANGE,    "sambaPwdMustChange"    },
  82         { LDAP_ATTR_LOGON_TIME,         "sambaLogonTime"        },
  83         { LDAP_ATTR_LOGOFF_TIME,        "sambaLogoffTime"       },
  84         { LDAP_ATTR_KICKOFF_TIME,       "sambaKickoffTime"      },
  85         { LDAP_ATTR_CN,                 "cn"                    },
  86         { LDAP_ATTR_DISPLAY_NAME,       "displayName"           },
  87         { LDAP_ATTR_HOME_DRIVE,         "sambaHomeDrive"        },
  88         { LDAP_ATTR_HOME_PATH,          "sambaHomePath"         },
  89         { LDAP_ATTR_LOGON_SCRIPT,       "sambaLogonScript"      },
  90         { LDAP_ATTR_PROFILE_PATH,       "sambaProfilePath"      },
  91         { LDAP_ATTR_DESC,               "description"           },
  92         { LDAP_ATTR_USER_WKS,           "sambaUserWorkstations" },
  93         { LDAP_ATTR_USER_SID,           LDAP_ATTRIBUTE_SID      },
  94         { LDAP_ATTR_PRIMARY_GROUP_SID,  "sambaPrimaryGroupSID"  },
  95         { LDAP_ATTR_LMPW,               "sambaLMPassword"       },
  96         { LDAP_ATTR_NTPW,               "sambaNTPassword"       },
  97         { LDAP_ATTR_DOMAIN,             "sambaDomainName"       },
  98         { LDAP_ATTR_OBJCLASS,           "objectClass"           },
  99         { LDAP_ATTR_ACB_INFO,           "sambaAcctFlags"        },
 100         { LDAP_ATTR_MUNGED_DIAL,        "sambaMungedDial"       },
 101         { LDAP_ATTR_LIST_END,           NULL                    }
 102 };
 103
 104 /* attributes used for alalocating RIDs */
 105
 106 ATTRIB_MAP_ENTRY dominfo_attr_list[] = {
 107         { LDAP_ATTR_DOMAIN,             "sambaDomainName"       },
 108         { LDAP_ATTR_NEXT_RID,           "sambaNextRid"          },
 109         { LDAP_ATTR_NEXT_USERRID,       "sambaNextUserRid"      },
 110         { LDAP_ATTR_NEXT_GROUPRID,      "sambaNextGroupRid"     },
 111         { LDAP_ATTR_DOM_SID,            LDAP_ATTRIBUTE_SID      },
 112         { LDAP_ATTR_ALGORITHMIC_RID_BASE,"sambaAlgorithmicRidBase"},
 113         { LDAP_ATTR_OBJCLASS,           "objectClass"           },
 114         { LDAP_ATTR_LIST_END,           NULL                    },
 115 };
 116
 117 /* Samba 3.0 group mapping attributes */
 118
 119 ATTRIB_MAP_ENTRY groupmap_attr_list[] = {
 120         { LDAP_ATTR_GIDNUMBER,          LDAP_ATTRIBUTE_GIDNUMBER},
 121         { LDAP_ATTR_GROUP_SID,          LDAP_ATTRIBUTE_SID      },
 122         { LDAP_ATTR_GROUP_TYPE,         "sambaGroupType"        },
 123         { LDAP_ATTR_DESC,               "description"           },
 124         { LDAP_ATTR_DISPLAY_NAME,       "displayName"           },
 125         { LDAP_ATTR_CN,                 "cn"                    },
 126         { LDAP_ATTR_OBJCLASS,           "objectClass"           },
 127         { LDAP_ATTR_LIST_END,           NULL                    }
 128 };
 129
 130 ATTRIB_MAP_ENTRY groupmap_attr_list_to_delete[] = {
 131         { LDAP_ATTR_GROUP_SID,          LDAP_ATTRIBUTE_SID      },
 132         { LDAP_ATTR_GROUP_TYPE,         "sambaGroupType"        },
 133         { LDAP_ATTR_DESC,               "description"           },
 134         { LDAP_ATTR_DISPLAY_NAME,       "displayName"           },
 135         { LDAP_ATTR_LIST_END,           NULL                    }
 136 };
 137
 138 /* idmap_ldap sambaUnixIdPool */
 139
 140 ATTRIB_MAP_ENTRY idpool_attr_list[] = {
 141         { LDAP_ATTR_UIDNUMBER,          LDAP_ATTRIBUTE_UIDNUMBER},
 142         { LDAP_ATTR_GIDNUMBER,          LDAP_ATTRIBUTE_GIDNUMBER},
 143         { LDAP_ATTR_OBJCLASS,           "objectClass"           },
 144         { LDAP_ATTR_LIST_END,           NULL                    }
 145 };
 146
 147 ATTRIB_MAP_ENTRY sidmap_attr_list[] = {
 148         { LDAP_ATTR_SID,                LDAP_ATTRIBUTE_SID      },
 149         { LDAP_ATTR_UIDNUMBER,          LDAP_ATTRIBUTE_UIDNUMBER},
 150         { LDAP_ATTR_GIDNUMBER,          LDAP_ATTRIBUTE_GIDNUMBER},
 151         { LDAP_ATTR_OBJCLASS,           "objectClass"           },
 152         { LDAP_ATTR_LIST_END,           NULL                    }
 153 };
 154
 155 /**********************************************************************
 156  perform a simple table lookup and return the attribute name
 157  **********************************************************************/
 158
 159  const char* get_attr_key2string( ATTRIB_MAP_ENTRY table[], int key )
 160 {
 161         int i = 0;
 162
 163         while ( table[i].attrib != LDAP_ATTR_LIST_END ) {
 164                 if ( table[i].attrib == key )
 165                         return table[i].name;
 166                 i++;
 167         }
 168
 169         return NULL;
 170 }
 171
 172
 173 /**********************************************************************
 174  Return the list of attribute names from a mapping table
 175  **********************************************************************/
 176
 177  char** get_attr_list( ATTRIB_MAP_ENTRY table[] )
 178 {
 179         char **names;
 180         int i = 0;
 181
 182         while ( table[i].attrib != LDAP_ATTR_LIST_END )
 183                 i++;
 184         i++;
 185
 186         names = (char**)malloc( sizeof(char*)*i );
 187         if ( !names ) {
 188                 DEBUG(0,("get_attr_list: out of memory\n"));
 189                 return NULL;
 190         }
 191
 192         i = 0;
 193         while ( table[i].attrib != LDAP_ATTR_LIST_END ) {
 194                 names[i] = strdup( table[i].name );
 195                 i++;
 196         }
 197         names[i] = NULL;
 198
 199         return names;
 200 }
 201
 202 /*********************************************************************
 203  Cleanup
 204  ********************************************************************/
 205
 206  void free_attr_list( char **list )
 207 {
 208         int i = 0;
 209
 210         if ( !list )
 211                 return;
 212
 213         while ( list[i] ) {
 214                 SAFE_FREE( list[i] );
 215                 i+=1;
 216         }
 217
 218         SAFE_FREE( list );
 219 }
 220
 221 /*******************************************************************
 222  find the ldap password
 223 ******************************************************************/
 224 BOOL fetch_ldap_pw(char **dn, char** pw)
 225 {
 226         char *key = NULL;
 227         size_t size;
 228
 229         *dn = smb_xstrdup(lp_ldap_admin_dn());
 230
 231         if (asprintf(&key, "%s/%s", SECRETS_LDAP_BIND_PW, *dn) < 0) {
 232                 SAFE_FREE(*dn);
 233                 DEBUG(0, ("fetch_ldap_pw: asprintf failed!\n"));
 234         }
 235
 236         *pw=secrets_fetch(key, &size);
 237         SAFE_FREE(key);
 238
 239         if (!size) {
 240                 /* Upgrade 2.2 style entry */
 241                 char *p;
 242                 char* old_style_key = strdup(*dn);
 243                 char *data;
 244                 fstring old_style_pw;
 245
 246                 if (!old_style_key) {
 247                         DEBUG(0, ("fetch_ldap_pw: strdup failed!\n"));
 248                         return False;
 249                 }
 250
 251                 for (p=old_style_key; *p; p++)
 252                         if (*p == ',') *p = '/';
 253
 254                 data=secrets_fetch(old_style_key, &size);
 255                 if (!size && size < sizeof(old_style_pw)) {
 256                         DEBUG(0,("fetch_ldap_pw: neither ldap secret retrieved!\n"));
 257                         SAFE_FREE(old_style_key);
 258                         SAFE_FREE(*dn);
 259                         return False;
 260                 }
 261
 262                 size = MIN(size, sizeof(fstring)-1);
 263                 strncpy(old_style_pw, data, size);
 264                 old_style_pw[size] = 0;
 265
 266                 SAFE_FREE(data);
 267
 268                 if (!secrets_store_ldap_pw(*dn, old_style_pw)) {
 269                         DEBUG(0,("fetch_ldap_pw: ldap secret could not be upgraded!\n"));
 270                         SAFE_FREE(old_style_key);
 271                         SAFE_FREE(*dn);
 272                         return False;
 273                 }
 274                 if (!secrets_delete(old_style_key)) {
 275                         DEBUG(0,("fetch_ldap_pw: old ldap secret could not be deleted!\n"));
 276                 }
 277
 278                 SAFE_FREE(old_style_key);
 279
 280                 *pw = smb_xstrdup(old_style_pw);
 281         }
 282
 283         return True;
 284 }
 285
 286 /*******************************************************************
 287  Search an attribute and return the first value found.
 288 ******************************************************************/
 289
 290  BOOL smbldap_get_single_attribute (LDAP * ldap_struct, LDAPMessage * entry,
 291                                    const char *attribute, pstring value)
 292 {
 293         char **values;
 294
 295         if ( !attribute )
 296                 return False;
 297
 298         value[0] = '\0';
 299
 300         if ((values = ldap_get_values (ldap_struct, entry, attribute)) == NULL) {
 301                 DEBUG (10, ("smbldap_get_single_attribute: [%s] = [<does not exist>]\n", attribute));
 302
 303                 return False;
 304         }
 305
 306         if (convert_string(CH_UTF8, CH_UNIX,values[0], -1, value, sizeof(pstring)) == (size_t)-1) {
 307                 DEBUG(1, ("smbldap_get_single_attribute: string conversion of [%s] = [%s] failed!\n",
 308                           attribute, values[0]));
 309                 ldap_value_free(values);
 310                 return False;
 311         }
 312
 313         ldap_value_free(values);
 314 #ifdef DEBUG_PASSWORDS
 315         DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n", attribute, value));
 316 #endif
 317         return True;
 318 }
 319
 320 /************************************************************************
 321  Routine to manage the LDAPMod structure array
 322  manage memory used by the array, by each struct, and values
 323  ***********************************************************************/
 324
 325  void smbldap_set_mod (LDAPMod *** modlist, int modop, const char *attribute, const char *value)
 326 {
 327         LDAPMod **mods;
 328         int i;
 329         int j;
 330
 331         mods = *modlist;
 332
 333         /* sanity checks on the mod values */
 334
 335         if (attribute == NULL || *attribute == '\0')
 336                 return;
 337 #if 0   /* commented out after discussion with abartlet.  Do not reenable.
 338            left here so other so re-add similar code   --jerry */
 339         if (value == NULL || *value == '\0')
 340                 return;
 341 #endif
 342
 343         if (mods == NULL)
 344         {
 345                 mods = (LDAPMod **) malloc(sizeof(LDAPMod *));
 346                 if (mods == NULL)
 347                 {
 348                         DEBUG(0, ("make_a_mod: out of memory!\n"));
 349                         return;
 350                 }
 351                 mods[0] = NULL;
 352         }
 353
 354         for (i = 0; mods[i] != NULL; ++i) {
 355                 if (mods[i]->mod_op == modop && strequal(mods[i]->mod_type, attribute))
 356                         break;
 357         }
 358
 359         if (mods[i] == NULL)
 360         {
 361                 mods = (LDAPMod **) Realloc (mods, (i + 2) * sizeof (LDAPMod *));
 362                 if (mods == NULL)
 363                 {
 364                         DEBUG(0, ("make_a_mod: out of memory!\n"));
 365                         return;
 366                 }
 367                 mods[i] = (LDAPMod *) malloc(sizeof(LDAPMod));
 368                 if (mods[i] == NULL)
 369                 {
 370                         DEBUG(0, ("make_a_mod: out of memory!\n"));
 371                         return;
 372                 }
 373                 mods[i]->mod_op = modop;
 374                 mods[i]->mod_values = NULL;
 375                 mods[i]->mod_type = strdup(attribute);
 376                 mods[i + 1] = NULL;
 377         }
 378
 379         if (value != NULL)
 380         {
 381                 char *utf8_value = NULL;
 382
 383                 j = 0;
 384                 if (mods[i]->mod_values != NULL) {
 385                         for (; mods[i]->mod_values[j] != NULL; j++);
 386                 }
 387                 mods[i]->mod_values = (char **)Realloc(mods[i]->mod_values,
 388                                                (j + 2) * sizeof (char *));
 389
 390                 if (mods[i]->mod_values == NULL) {
 391                         DEBUG (0, ("make_a_mod: Memory allocation failure!\n"));
 392                         return;
 393                 }
 394
 395                 if (push_utf8_allocate(&utf8_value, value) == (size_t)-1) {
 396                         DEBUG (0, ("make_a_mod: String conversion failure!\n"));
 397                         return;
 398                 }
 399
 400                 mods[i]->mod_values[j] = utf8_value;
 401
 402                 mods[i]->mod_values[j + 1] = NULL;
 403         }
 404         *modlist = mods;
 405 }
 406
 407 /**********************************************************************
 408   Set attribute to newval in LDAP, regardless of what value the
 409   attribute had in LDAP before.
 410 *********************************************************************/
 411
 412  void smbldap_make_mod(LDAP *ldap_struct, LDAPMessage *existing,
 413                       LDAPMod ***mods,
 414                       const char *attribute, const char *newval)
 415 {
 416         pstring oldval;
 417         BOOL existed;
 418
 419         if (existing != NULL) {
 420                 existed = smbldap_get_single_attribute(ldap_struct, existing, attribute, oldval);
 421         } else {
 422                 existed = False;
 423                 *oldval = '\0';
 424         }
 425
 426         /* all of our string attributes are case insensitive */
 427
 428         if (existed && (StrCaseCmp(oldval, newval) == 0)) {
 429
 430                 /* Believe it or not, but LDAP will deny a delete and
 431                    an add at the same time if the values are the
 432                    same... */
 433                 return;
 434         }
 435
 436         /* Regardless of the real operation (add or modify)
 437            we add the new value here. We rely on deleting
 438            the old value, should it exist. */
 439
 440         if ((newval != NULL) && (strlen(newval) > 0)) {
 441                 smbldap_set_mod(mods, LDAP_MOD_ADD, attribute, newval);
 442         }
 443
 444         if (!existed) {
 445                 /* There has been no value before, so don't delete it.
 446                    Here's a possible race: We might end up with
 447                    duplicate attributes */
 448                 return;
 449         }
 450
 451         /* By deleting exactly the value we found in the entry this
 452            should be race-free in the sense that the LDAP-Server will
 453            deny the complete operation if somebody changed the
 454            attribute behind our back. */
 455
 456         smbldap_set_mod(mods, LDAP_MOD_DELETE, attribute, oldval);
 457 }
 458
 459 /**********************************************************************
 460  Some varients of the LDAP rebind code do not pass in the third 'arg'
 461  pointer to a void*, so we try and work around it by assuming that the
 462  value of the 'LDAP *' pointer is the same as the one we had passed in
 463  **********************************************************************/
 464
 465 struct smbldap_state_lookup {
 466         LDAP *ld;
 467         struct smbldap_state *smbldap_state;
 468         struct smbldap_state_lookup *prev, *next;
 469 };
 470
 471 static struct smbldap_state_lookup *smbldap_state_lookup_list;
 472
 473 static struct smbldap_state *smbldap_find_state(LDAP *ld)
 474 {
 475         struct smbldap_state_lookup *t;
 476
 477         for (t = smbldap_state_lookup_list; t; t = t->next) {
 478                 if (t->ld == ld) {
 479                         return t->smbldap_state;
 480                 }
 481         }
 482         return NULL;
 483 }
 484
 485 static void smbldap_delete_state(struct smbldap_state *smbldap_state)
 486 {
 487         struct smbldap_state_lookup *t;
 488
 489         for (t = smbldap_state_lookup_list; t; t = t->next) {
 490                 if (t->smbldap_state == smbldap_state) {
 491                         DLIST_REMOVE(smbldap_state_lookup_list, t);
 492                         SAFE_FREE(t);
 493                         return;
 494                 }
 495         }
 496 }
 497
 498 static void smbldap_store_state(LDAP *ld, struct smbldap_state *smbldap_state)
 499 {
 500         struct smbldap_state *tmp_ldap_state;
 501         struct smbldap_state_lookup *t;
 502         struct smbldap_state_lookup *tmp;
 503
 504         if ((tmp_ldap_state = smbldap_find_state(ld))) {
 505                 SMB_ASSERT(tmp_ldap_state == smbldap_state);
 506                 return;
 507         }
 508
 509         t = smb_xmalloc(sizeof(*t));
 510         ZERO_STRUCTP(t);
 511
 512         DLIST_ADD_END(smbldap_state_lookup_list, t, tmp);
 513         t->ld = ld;
 514         t->smbldap_state = smbldap_state;
 515 }
 516
 517 /*******************************************************************
 518  open a connection to the ldap server.
 519 ******************************************************************/
 520 static int smbldap_open_connection (struct smbldap_state *ldap_state)
 521
 522 {
 523         int rc = LDAP_SUCCESS;
 524         int version;
 525         BOOL ldap_v3 = False;
 526         LDAP **ldap_struct = &ldap_state->ldap_struct;
 527
 528 #ifdef HAVE_LDAP_INITIALIZE
 529         DEBUG(10, ("smbldap_open_connection: %s\n", ldap_state->uri));
 530
 531         if ((rc = ldap_initialize(ldap_struct, ldap_state->uri)) != LDAP_SUCCESS) {
 532                 DEBUG(0, ("ldap_initialize: %s\n", ldap_err2string(rc)));
 533                 return rc;
 534         }
 535 #else
 536
 537         /* Parse the string manually */
 538
 539         {
 540                 int port = 0;
 541                 fstring protocol;
 542                 fstring host;
 543                 const char *p = ldap_state->uri;
 544                 SMB_ASSERT(sizeof(protocol)>10 && sizeof(host)>254);
 545
 546                 /* skip leading "URL:" (if any) */
 547                 if ( strnequal( p, "URL:", 4 ) ) {
 548                         p += 4;
 549                 }
 550
 551                 sscanf(p, "%10[^:]://%254[^:/]:%d", protocol, host, &port);
 552
 553                 if (port == 0) {
 554                         if (strequal(protocol, "ldap")) {
 555                                 port = LDAP_PORT;
 556                         } else if (strequal(protocol, "ldaps")) {
 557                                 port = LDAPS_PORT;
 558                         } else {
 559                                 DEBUG(0, ("unrecognised protocol (%s)!\n", protocol));
 560                         }
 561                 }
 562
 563                 if ((*ldap_struct = ldap_init(host, port)) == NULL)     {
 564                         DEBUG(0, ("ldap_init failed !\n"));
 565                         return LDAP_OPERATIONS_ERROR;
 566                 }
 567
 568                 if (strequal(protocol, "ldaps")) {
 569 #ifdef LDAP_OPT_X_TLS
 570                         int tls = LDAP_OPT_X_TLS_HARD;
 571                         if (ldap_set_option (*ldap_struct, LDAP_OPT_X_TLS, &tls) != LDAP_SUCCESS)
 572                         {
 573                                 DEBUG(0, ("Failed to setup a TLS session\n"));
 574                         }
 575
 576                         DEBUG(3,("LDAPS option set...!\n"));
 577 #else
 578                         DEBUG(0,("smbldap_open_connection: Secure connection not supported by LDAP client libraries!\n"));
 579                         return LDAP_OPERATIONS_ERROR;
 580 #endif
 581                 }
 582         }
 583 #endif
 584
 585         /* Store the LDAP pointer in a lookup list */
 586
 587         smbldap_store_state(*ldap_struct, ldap_state);
 588
 589         /* Upgrade to LDAPv3 if possible */
 590
 591         if (ldap_get_option(*ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version) == LDAP_OPT_SUCCESS)
 592         {
 593                 if (version != LDAP_VERSION3)
 594                 {
 595                         version = LDAP_VERSION3;
 596                         if (ldap_set_option (*ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version) == LDAP_OPT_SUCCESS) {
 597                                 ldap_v3 = True;
 598                         }
 599                 } else {
 600                         ldap_v3 = True;
 601                 }
 602         }
 603
 604         if (lp_ldap_ssl() == LDAP_SSL_START_TLS) {
 605 #ifdef LDAP_OPT_X_TLS
 606                 if (ldap_v3) {
 607                         if ((rc = ldap_start_tls_s (*ldap_struct, NULL, NULL)) != LDAP_SUCCESS)
 608                         {
 609                                 DEBUG(0,("Failed to issue the StartTLS instruction: %s\n",
 610                                          ldap_err2string(rc)));
 611                                 return rc;
 612                         }
 613                         DEBUG (3, ("StartTLS issued: using a TLS connection\n"));
 614                 } else {
 615
 616                         DEBUG(0, ("Need LDAPv3 for Start TLS\n"));
 617                         return LDAP_OPERATIONS_ERROR;
 618                 }
 619 #else
 620                 DEBUG(0,("smbldap_open_connection: StartTLS not supported by LDAP client libraries!\n"));
 621                 return LDAP_OPERATIONS_ERROR;
 622 #endif
 623         }
 624
 625         DEBUG(2, ("smbldap_open_connection: connection opened\n"));
 626         return rc;
 627 }
 628
 629
 630 /*******************************************************************
 631  a rebind function for authenticated referrals
 632  This version takes a void* that we can shove useful stuff in :-)
 633 ******************************************************************/
 634 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
 635 #else
 636 static int rebindproc_with_state  (LDAP * ld, char **whop, char **credp,
 637                                    int *methodp, int freeit, void *arg)
 638 {
 639         struct smbldap_state *ldap_state = arg;
 640
 641         /** @TODO Should we be doing something to check what servers we rebind to?
 642             Could we get a referral to a machine that we don't want to give our
 643             username and password to? */
 644
 645         if (freeit) {
 646                 SAFE_FREE(*whop);
 647                 memset(*credp, '\0', strlen(*credp));
 648                 SAFE_FREE(*credp);
 649         } else {
 650                 DEBUG(5,("rebind_proc_with_state: Rebinding as \"%s\"\n",
 651                           ldap_state->bind_dn));
 652
 653                 *whop = strdup(ldap_state->bind_dn);
 654                 if (!*whop) {
 655                         return LDAP_NO_MEMORY;
 656                 }
 657                 *credp = strdup(ldap_state->bind_secret);
 658                 if (!*credp) {
 659                         SAFE_FREE(*whop);
 660                         return LDAP_NO_MEMORY;
 661                 }
 662                 *methodp = LDAP_AUTH_SIMPLE;
 663         }
 664
 665         gettimeofday(&(ldap_state->last_rebind),NULL);
 666
 667         return 0;
 668 }
 669 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 670
 671 /*******************************************************************
 672  a rebind function for authenticated referrals
 673  This version takes a void* that we can shove useful stuff in :-)
 674  and actually does the connection.
 675 ******************************************************************/
 676 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
 677 static int rebindproc_connect_with_state (LDAP *ldap_struct,
 678                                           LDAP_CONST char *url,
 679                                           ber_tag_t request,
 680                                           ber_int_t msgid, void *arg)
 681 {
 682         struct smbldap_state *ldap_state = arg;
 683         int rc;
 684         DEBUG(5,("rebindproc_connect_with_state: Rebinding as \"%s\"\n",
 685                  ldap_state->bind_dn));
 686
 687         /** @TODO Should we be doing something to check what servers we rebind to?
 688             Could we get a referral to a machine that we don't want to give our
 689             username and password to? */
 690
 691         rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
 692
 693         gettimeofday(&(ldap_state->last_rebind),NULL);
 694
 695         return rc;
 696 }
 697 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 698
 699 /*******************************************************************
 700  Add a rebind function for authenticated referrals
 701 ******************************************************************/
 702 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
 703 #else
 704 # if LDAP_SET_REBIND_PROC_ARGS == 2
 705 static int rebindproc (LDAP *ldap_struct, char **whop, char **credp,
 706                        int *method, int freeit )
 707 {
 708         struct smbldap_state *ldap_state = smbldap_find_state(ldap_struct);
 709
 710         return rebindproc_with_state(ldap_struct, whop, credp,
 711                                      method, freeit, ldap_state);
 712
 713 }
 714 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
 715 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 716
 717 /*******************************************************************
 718  a rebind function for authenticated referrals
 719  this also does the connection, but no void*.
 720 ******************************************************************/
 721 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
 722 # if LDAP_SET_REBIND_PROC_ARGS == 2
 723 static int rebindproc_connect (LDAP * ld, LDAP_CONST char *url, int request,
 724                                ber_int_t msgid)
 725 {
 726         struct smbldap_state *ldap_state = smbldap_find_state(ld);
 727
 728         return rebindproc_connect_with_state(ld, url, (ber_tag_t)request, msgid,
 729                                              ldap_state);
 730 }
 731 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
 732 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 733
 734 /*******************************************************************
 735  connect to the ldap server under system privilege.
 736 ******************************************************************/
 737 static int smbldap_connect_system(struct smbldap_state *ldap_state, LDAP * ldap_struct)
 738 {
 739         int rc;
 740         char *ldap_dn;
 741         char *ldap_secret;
 742
 743         /* get the password */
 744         if (!fetch_ldap_pw(&ldap_dn, &ldap_secret))
 745         {
 746                 DEBUG(0, ("ldap_connect_system: Failed to retrieve password from secrets.tdb\n"));
 747                 return LDAP_INVALID_CREDENTIALS;
 748         }
 749
 750         ldap_state->bind_dn = ldap_dn;
 751         ldap_state->bind_secret = ldap_secret;
 752
 753         /* removed the sasl_bind_s "EXTERNAL" stuff, as my testsuite
 754            (OpenLDAP) doesnt' seem to support it */
 755
 756         DEBUG(10,("ldap_connect_system: Binding to ldap server %s as \"%s\"\n",
 757                   ldap_state->uri, ldap_dn));
 758
 759 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
 760 # if LDAP_SET_REBIND_PROC_ARGS == 2
 761         ldap_set_rebind_proc(ldap_struct, &rebindproc_connect);
 762 # endif
 763 # if LDAP_SET_REBIND_PROC_ARGS == 3
 764         ldap_set_rebind_proc(ldap_struct, &rebindproc_connect_with_state, (void *)ldap_state);
 765 # endif
 766 #else /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 767 # if LDAP_SET_REBIND_PROC_ARGS == 2
 768         ldap_set_rebind_proc(ldap_struct, &rebindproc);
 769 # endif
 770 # if LDAP_SET_REBIND_PROC_ARGS == 3
 771         ldap_set_rebind_proc(ldap_struct, &rebindproc_with_state, (void *)ldap_state);
 772 # endif
 773 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 774
 775         rc = ldap_simple_bind_s(ldap_struct, ldap_dn, ldap_secret);
 776
 777         if (rc != LDAP_SUCCESS) {
 778                 char *ld_error = NULL;
 779                 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
 780                                 &ld_error);
 781                 DEBUG(ldap_state->num_failures ? 2 : 0,
 782                       ("failed to bind to server with dn= %s Error: %s\n\t%s\n",
 783                                ldap_dn ? ldap_dn : "(unknown)", ldap_err2string(rc),
 784                                ld_error ? ld_error : "(unknown)"));
 785                 SAFE_FREE(ld_error);
 786                 ldap_state->num_failures++;
 787                 return rc;
 788         }
 789
 790         ldap_state->num_failures = 0;
 791
 792         DEBUG(3, ("ldap_connect_system: succesful connection to the LDAP server\n"));
 793         return rc;
 794 }
 795
 796 /**********************************************************************
 797 Connect to LDAP server (called before every ldap operation)
 798 *********************************************************************/
 799 static int smbldap_open(struct smbldap_state *ldap_state)
 800 {
 801         int rc;
 802         SMB_ASSERT(ldap_state);
 803
 804 #ifndef NO_LDAP_SECURITY
 805         if (geteuid() != 0) {
 806                 DEBUG(0, ("smbldap_open: cannot access LDAP when not root..\n"));
 807                 return  LDAP_INSUFFICIENT_ACCESS;
 808         }
 809 #endif
 810
 811         if ((ldap_state->ldap_struct != NULL) && ((ldap_state->last_ping + SMBLDAP_DONT_PING_TIME) < time(NULL))) {
 812                 struct sockaddr_un addr;
 813                 socklen_t len = sizeof(addr);
 814                 int sd;
 815                 if (ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_DESC, &sd) == 0 &&
 816                     getpeername(sd, (struct sockaddr *) &addr, &len) < 0) {
 817                         /* the other end has died. reopen. */
 818                         ldap_unbind_ext(ldap_state->ldap_struct, NULL, NULL);
 819                         ldap_state->ldap_struct = NULL;
 820                         ldap_state->last_ping = (time_t)0;
 821                 } else {
 822                         ldap_state->last_ping = time(NULL);
 823                 }
 824         }
 825
 826         if (ldap_state->ldap_struct != NULL) {
 827                 DEBUG(11,("smbldap_open: already connected to the LDAP server\n"));
 828                 return LDAP_SUCCESS;
 829         }
 830
 831         if ((rc = smbldap_open_connection(ldap_state))) {
 832                 return rc;
 833         }
 834
 835         if ((rc = smbldap_connect_system(ldap_state, ldap_state->ldap_struct))) {
 836                 ldap_unbind_ext(ldap_state->ldap_struct, NULL, NULL);
 837                 ldap_state->ldap_struct = NULL;
 838                 return rc;
 839         }
 840
 841
 842         ldap_state->last_ping = time(NULL);
 843         DEBUG(4,("The LDAP server is succesful connected\n"));
 844
 845         return LDAP_SUCCESS;
 846 }
 847
 848 /**********************************************************************
 849 Disconnect from LDAP server
 850 *********************************************************************/
 851 static NTSTATUS smbldap_close(struct smbldap_state *ldap_state)
 852 {
 853         if (!ldap_state)
 854                 return NT_STATUS_INVALID_PARAMETER;
 855
 856         if (ldap_state->ldap_struct != NULL) {
 857                 ldap_unbind_ext(ldap_state->ldap_struct, NULL, NULL);
 858                 ldap_state->ldap_struct = NULL;
 859         }
 860
 861         smbldap_delete_state(ldap_state);
 862
 863         DEBUG(5,("The connection to the LDAP server was closed\n"));
 864         /* maybe free the results here --metze */
 865
 866
 867
 868         return NT_STATUS_OK;
 869 }
 870
 871 int smbldap_retry_open(struct smbldap_state *ldap_state, int *attempts)
 872 {
 873         int rc;
 874
 875         SMB_ASSERT(ldap_state && attempts);
 876
 877         if (*attempts != 0) {
 878                 unsigned int sleep_time;
 879                 uint8 rand_byte;
 880
 881                 /* Sleep for a random timeout */
 882                 rand_byte = (char)(sys_random());
 883
 884                 sleep_time = (((*attempts)*(*attempts))/2)*rand_byte*2;
 885                 /* we retry after (0.5, 1, 2, 3, 4.5, 6) seconds
 886                    on average.
 887                  */
 888                 DEBUG(3, ("Sleeping for %u milliseconds before reconnecting\n",
 889                           sleep_time));
 890                 msleep(sleep_time);
 891         }
 892         (*attempts)++;
 893
 894         if ((rc = smbldap_open(ldap_state))) {
 895                 DEBUG(1,("Connection to LDAP Server failed for the %d try!\n",*attempts));
 896                 return rc;
 897         }
 898
 899         return LDAP_SUCCESS;
 900 }
 901
 902
 903 /*********************************************************************
 904  ********************************************************************/
 905
 906 int smbldap_search(struct smbldap_state *ldap_state,
 907                    const char *base, int scope, const char *filter,
 908                    char *attrs[], int attrsonly,
 909                    LDAPMessage **res)
 910 {
 911         int             rc = LDAP_SERVER_DOWN;
 912         int             attempts = 0;
 913         char           *utf8_filter;
 914
 915         SMB_ASSERT(ldap_state);
 916
 917         if (ldap_state->last_rebind.tv_sec > 0) {
 918                 struct timeval  tval;
 919                 int             tdiff = 0;
 920                 int             sleep_time = 0;
 921
 922                 ZERO_STRUCT(tval);
 923
 924                 gettimeofday(&tval,NULL);
 925
 926                 tdiff = 1000000 *(tval.tv_sec - ldap_state->last_rebind.tv_sec) +
 927                         (tval.tv_usec - ldap_state->last_rebind.tv_usec);
 928
 929                 sleep_time = ((1000*lp_ldap_rebind_sleep())-tdiff)/1000;
 930
 931                 if (sleep_time > 0) {
 932                         /* we wait for the LDAP replication */
 933                         DEBUG(5,("smbldap_search: waiting %d milliseconds for LDAP replication.\n",sleep_time));
 934                         msleep(sleep_time);
 935                         DEBUG(5,("smbldap_search: go on!\n"));
 936                         ZERO_STRUCT(ldap_state->last_rebind);
 937                 }
 938         }
 939
 940         if (push_utf8_allocate(&utf8_filter, filter) == (size_t)-1) {
 941                 return LDAP_NO_MEMORY;
 942         }
 943
 944         while ((rc == LDAP_SERVER_DOWN) && (attempts < SMBLDAP_NUM_RETRIES)) {
 945
 946                 if ((rc = smbldap_retry_open(ldap_state,&attempts)) != LDAP_SUCCESS)
 947                         continue;
 948
 949                 rc = ldap_search_s(ldap_state->ldap_struct, base, scope,
 950                                    utf8_filter, attrs, attrsonly, res);
 951         }
 952
 953         if (rc == LDAP_SERVER_DOWN) {
 954                 DEBUG(0,("%s: LDAP server is down!\n",FUNCTION_MACRO));
 955                 smbldap_close(ldap_state);
 956         }
 957
 958         ldap_state->last_use = time(NULL);
 959
 960         SAFE_FREE(utf8_filter);
 961         return rc;
 962 }
 963
 964 int smbldap_modify(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
 965 {
 966         int             rc = LDAP_SERVER_DOWN;
 967         int             attempts = 0;
 968         char           *utf8_dn;
 969
 970         SMB_ASSERT(ldap_state);
 971
 972         if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
 973                 return LDAP_NO_MEMORY;
 974         }
 975
 976         while ((rc == LDAP_SERVER_DOWN) && (attempts < SMBLDAP_NUM_RETRIES)) {
 977
 978                 if ((rc = smbldap_retry_open(ldap_state,&attempts)) != LDAP_SUCCESS)
 979                         continue;
 980
 981                 rc = ldap_modify_s(ldap_state->ldap_struct, utf8_dn, attrs);
 982         }
 983
 984         if (rc == LDAP_SERVER_DOWN) {
 985                 DEBUG(0,("%s: LDAP server is down!\n",FUNCTION_MACRO));
 986                 smbldap_close(ldap_state);
 987         }
 988
 989         ldap_state->last_use = time(NULL);
 990
 991         SAFE_FREE(utf8_dn);
 992         return rc;
 993 }
 994
 995 int smbldap_add(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
 996 {
 997         int             rc = LDAP_SERVER_DOWN;
 998         int             attempts = 0;
 999         char           *utf8_dn;
1000
1001         SMB_ASSERT(ldap_state);
1002
1003         if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1004                 return LDAP_NO_MEMORY;
1005         }
1006
1007         while ((rc == LDAP_SERVER_DOWN) && (attempts < SMBLDAP_NUM_RETRIES)) {
1008
1009                 if ((rc = smbldap_retry_open(ldap_state,&attempts)) != LDAP_SUCCESS)
1010                         continue;
1011
1012                 rc = ldap_add_s(ldap_state->ldap_struct, utf8_dn, attrs);
1013         }
1014
1015         if (rc == LDAP_SERVER_DOWN) {
1016                 DEBUG(0,("%s: LDAP server is down!\n",FUNCTION_MACRO));
1017                 smbldap_close(ldap_state);
1018         }
1019
1020         ldap_state->last_use = time(NULL);
1021
1022         SAFE_FREE(utf8_dn);
1023         return rc;
1024 }
1025
1026 int smbldap_delete(struct smbldap_state *ldap_state, const char *dn)
1027 {
1028         int             rc = LDAP_SERVER_DOWN;
1029         int             attempts = 0;
1030         char           *utf8_dn;
1031
1032         SMB_ASSERT(ldap_state);
1033
1034         if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1035                 return LDAP_NO_MEMORY;
1036         }
1037
1038         while ((rc == LDAP_SERVER_DOWN) && (attempts < SMBLDAP_NUM_RETRIES)) {
1039
1040                 if ((rc = smbldap_retry_open(ldap_state,&attempts)) != LDAP_SUCCESS)
1041                         continue;
1042
1043                 rc = ldap_delete_s(ldap_state->ldap_struct, utf8_dn);
1044         }
1045
1046         if (rc == LDAP_SERVER_DOWN) {
1047                 DEBUG(0,("%s: LDAP server is down!\n",FUNCTION_MACRO));
1048                 smbldap_close(ldap_state);
1049         }
1050
1051         ldap_state->last_use = time(NULL);
1052
1053         SAFE_FREE(utf8_dn);
1054         return rc;
1055 }
1056
1057 int smbldap_extended_operation(struct smbldap_state *ldap_state,
1058                                LDAP_CONST char *reqoid, struct berval *reqdata,
1059                                LDAPControl **serverctrls, LDAPControl **clientctrls,
1060                                char **retoidp, struct berval **retdatap)
1061 {
1062         int             rc = LDAP_SERVER_DOWN;
1063         int             attempts = 0;
1064
1065         if (!ldap_state)
1066                 return (-1);
1067
1068         while ((rc == LDAP_SERVER_DOWN) && (attempts < SMBLDAP_NUM_RETRIES)) {
1069
1070                 if ((rc = smbldap_retry_open(ldap_state,&attempts)) != LDAP_SUCCESS)
1071                         continue;
1072
1073                 rc = ldap_extended_operation_s(ldap_state->ldap_struct, reqoid, reqdata,
1074                                                serverctrls, clientctrls, retoidp, retdatap);
1075         }
1076
1077         if (rc == LDAP_SERVER_DOWN) {
1078                 DEBUG(0,("%s: LDAP server is down!\n",FUNCTION_MACRO));
1079                 smbldap_close(ldap_state);
1080         }
1081
1082         ldap_state->last_use = time(NULL);
1083
1084         return rc;
1085 }
1086
1087 /*******************************************************************
1088  run the search by name.
1089 ******************************************************************/
1090 int smbldap_search_suffix (struct smbldap_state *ldap_state, const char *filter,
1091                            char **search_attr, LDAPMessage ** result)
1092 {
1093         int scope = LDAP_SCOPE_SUBTREE;
1094         int rc;
1095
1096         DEBUG(2, ("smbldap_search_suffix: searching for:[%s]\n", filter));
1097
1098         rc = smbldap_search(ldap_state, lp_ldap_suffix(), scope, filter, search_attr, 0, result);
1099
1100         if (rc != LDAP_SUCCESS) {
1101                 char *ld_error = NULL;
1102                 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
1103                                 &ld_error);
1104                 DEBUG(0,("smbldap_search_suffix: Problem during the LDAP search: %s (%s)\n",
1105                         ld_error?ld_error:"(unknown)", ldap_err2string (rc)));
1106                 DEBUG(3,("smbldap_search_suffix: Query was: %s, %s\n", lp_ldap_suffix(),
1107                         filter));
1108                 SAFE_FREE(ld_error);
1109         }
1110
1111         return rc;
1112 }
1113
1114 static void smbldap_idle_fn(void **data, time_t *interval, time_t now)
1115 {
1116         struct smbldap_state *state = (struct smbldap_state *)(*data);
1117
1118         if (state->ldap_struct == NULL) {
1119                 DEBUG(10,("ldap connection not connected...\n"));
1120                 return;
1121         }
1122
1123         if ((state->last_use+SMBLDAP_IDLE_TIME) > now) {
1124                 DEBUG(10,("ldap connection not idle...\n"));
1125                 return;
1126         }
1127
1128         DEBUG(7,("ldap connection idle...closing connection\n"));
1129         smbldap_close(state);
1130 }
1131
1132 /**********************************************************************
1133  Housekeeping
1134  *********************************************************************/
1135
1136 void smbldap_free_struct(struct smbldap_state **ldap_state)
1137 {
1138         smbldap_close(*ldap_state);
1139
1140         if ((*ldap_state)->bind_secret) {
1141                 memset((*ldap_state)->bind_secret, '\0', strlen((*ldap_state)->bind_secret));
1142         }
1143
1144         SAFE_FREE((*ldap_state)->bind_dn);
1145         SAFE_FREE((*ldap_state)->bind_secret);
1146
1147         smb_unregister_idle_event((*ldap_state)->event_id);
1148
1149         *ldap_state = NULL;
1150
1151         /* No need to free any further, as it is talloc()ed */
1152 }
1153
1154
1155 /**********************************************************************
1156  Intitalise the 'general' ldap structures, on which ldap operations may be conducted
1157  *********************************************************************/
1158
1159 NTSTATUS smbldap_init(TALLOC_CTX *mem_ctx, const char *location, struct smbldap_state **smbldap_state)
1160 {
1161         *smbldap_state = talloc_zero(mem_ctx, sizeof(**smbldap_state));
1162         if (!*smbldap_state) {
1163                 DEBUG(0, ("talloc() failed for ldapsam private_data!\n"));
1164                 return NT_STATUS_NO_MEMORY;
1165         }
1166
1167         if (location) {
1168                 (*smbldap_state)->uri = talloc_strdup(mem_ctx, location);
1169         } else {
1170                 (*smbldap_state)->uri = "ldap://localhost";
1171         }
1172
1173         (*smbldap_state)->event_id =
1174                 smb_register_idle_event(smbldap_idle_fn, (void *)(*smbldap_state),
1175                                         SMBLDAP_IDLE_TIME);
1176
1177         if ((*smbldap_state)->event_id == SMB_EVENT_ID_INVALID) {
1178                 DEBUG(0,("Failed to register LDAP idle event!\n"));
1179                 return NT_STATUS_INVALID_HANDLE;
1180         }
1181
1182         return NT_STATUS_OK;
1183 }
1184
1185 /**********************************************************************
1186  Add the sambaDomain to LDAP, so we don't have to search for this stuff
1187  again.  This is a once-add operation for now.
1188
1189  TODO:  Add other attributes, and allow modification.
1190 *********************************************************************/
1191 static NTSTATUS add_new_domain_info(struct smbldap_state *ldap_state,
1192                                     const char *domain_name)
1193 {
1194         fstring sid_string;
1195         fstring algorithmic_rid_base_string;
1196         pstring filter, dn;
1197         LDAPMod **mods = NULL;
1198         int rc;
1199         int ldap_op;
1200         LDAPMessage *result = NULL;
1201         int num_result;
1202         char **attr_list;
1203         uid_t u_low, u_high;
1204         gid_t g_low, g_high;
1205         uint32 rid_low, rid_high;
1206
1207         slprintf (filter, sizeof (filter) - 1, "(&(%s=%s)(objectclass=%s))",
1208                   get_attr_key2string(dominfo_attr_list, LDAP_ATTR_DOMAIN),
1209                   domain_name, LDAP_OBJ_DOMINFO);
1210
1211         attr_list = get_attr_list( dominfo_attr_list );
1212         rc = smbldap_search_suffix(ldap_state, filter, attr_list, &result);
1213         free_attr_list( attr_list );
1214
1215         if (rc != LDAP_SUCCESS) {
1216                 return NT_STATUS_UNSUCCESSFUL;
1217         }
1218
1219         num_result = ldap_count_entries(ldap_state->ldap_struct, result);
1220
1221         if (num_result > 1) {
1222                 DEBUG (0, ("More than domain with that name exists: bailing out!\n"));
1223                 ldap_msgfree(result);
1224                 return NT_STATUS_UNSUCCESSFUL;
1225         }
1226
1227         /* Check if we need to add an entry */
1228         DEBUG(3,("Adding new domain\n"));
1229         ldap_op = LDAP_MOD_ADD;
1230
1231         pstr_sprintf(dn, "%s=%s,%s", get_attr_key2string(dominfo_attr_list, LDAP_ATTR_DOMAIN),
1232                 domain_name, lp_ldap_suffix());
1233
1234         /* Free original search */
1235         ldap_msgfree(result);
1236
1237         /* make the changes - the entry *must* not already have samba attributes */
1238         smbldap_set_mod(&mods, LDAP_MOD_ADD, get_attr_key2string(dominfo_attr_list, LDAP_ATTR_DOMAIN),
1239                 domain_name);
1240
1241         /* If we don't have an entry, then ask secrets.tdb for what it thinks.
1242            It may choose to make it up */
1243
1244         sid_to_string(sid_string, get_global_sam_sid());
1245         smbldap_set_mod(&mods, LDAP_MOD_ADD, get_attr_key2string(dominfo_attr_list, LDAP_ATTR_DOM_SID), sid_string);
1246
1247         slprintf(algorithmic_rid_base_string, sizeof(algorithmic_rid_base_string) - 1, "%i", algorithmic_rid_base());
1248         smbldap_set_mod(&mods, LDAP_MOD_ADD, get_attr_key2string(dominfo_attr_list, LDAP_ATTR_ALGORITHMIC_RID_BASE),
1249                         algorithmic_rid_base_string);
1250         smbldap_set_mod(&mods, LDAP_MOD_ADD, "objectclass", LDAP_OBJ_DOMINFO);
1251
1252         /* add the sambaNext[User|Group]Rid attributes if the idmap ranges are set.
1253            TODO: fix all the places where the line between idmap and normal operations
1254            needed by smbd gets fuzzy   --jerry 2003-08-11                              */
1255
1256         if ( lp_idmap_uid(&u_low, &u_high) && lp_idmap_gid(&g_low, &g_high)
1257                 && get_free_rid_range(&rid_low, &rid_high) )
1258         {
1259                 fstring rid_str;
1260
1261                 fstr_sprintf( rid_str, "%i", rid_high|USER_RID_TYPE );
1262                 DEBUG(10,("setting next available user rid [%s]\n", rid_str));
1263                 smbldap_set_mod(&mods, LDAP_MOD_ADD,
1264                         get_attr_key2string(dominfo_attr_list, LDAP_ATTR_NEXT_USERRID),
1265                         rid_str);
1266
1267                 fstr_sprintf( rid_str, "%i", rid_high|GROUP_RID_TYPE );
1268                 DEBUG(10,("setting next available group rid [%s]\n", rid_str));
1269                 smbldap_set_mod(&mods, LDAP_MOD_ADD,
1270                         get_attr_key2string(dominfo_attr_list, LDAP_ATTR_NEXT_GROUPRID),
1271                         rid_str);
1272
1273         }
1274
1275
1276         switch(ldap_op)
1277         {
1278         case LDAP_MOD_ADD:
1279                 rc = smbldap_add(ldap_state, dn, mods);
1280                 break;
1281         case LDAP_MOD_REPLACE:
1282                 rc = smbldap_modify(ldap_state, dn, mods);
1283                 break;
1284         default:
1285                 DEBUG(0,("Wrong LDAP operation type: %d!\n", ldap_op));
1286                 return NT_STATUS_INVALID_PARAMETER;
1287         }
1288
1289         if (rc!=LDAP_SUCCESS) {
1290                 char *ld_error = NULL;
1291                 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING, &ld_error);
1292                 DEBUG(1,("failed to %s domain dn= %s with: %s\n\t%s\n",
1293                        ldap_op == LDAP_MOD_ADD ? "add" : "modify",
1294                        dn, ldap_err2string(rc),
1295                        ld_error?ld_error:"unknown"));
1296                 SAFE_FREE(ld_error);
1297
1298                 ldap_mods_free(mods, True);
1299                 return NT_STATUS_UNSUCCESSFUL;
1300         }
1301
1302         DEBUG(2,("added: domain = %s in the LDAP database\n", domain_name));
1303         ldap_mods_free(mods, True);
1304         return NT_STATUS_OK;
1305 }
1306
1307 /**********************************************************************
1308 Search for the domain info entry
1309 *********************************************************************/
1310 NTSTATUS smbldap_search_domain_info(struct smbldap_state *ldap_state,
1311                                     LDAPMessage ** result, const char *domain_name,
1312                                     BOOL try_add)
1313 {
1314         NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
1315         pstring filter;
1316         int rc;
1317         char **attr_list;
1318         int count;
1319
1320         pstr_sprintf(filter, "(&(objectClass=%s)(%s=%s))",
1321                 LDAP_OBJ_DOMINFO,
1322                 get_attr_key2string(dominfo_attr_list, LDAP_ATTR_DOMAIN),
1323                 domain_name);
1324
1325         DEBUG(2, ("Searching for:[%s]\n", filter));
1326
1327
1328         attr_list = get_attr_list( dominfo_attr_list );
1329         rc = smbldap_search_suffix(ldap_state, filter, attr_list , result);
1330         free_attr_list( attr_list );
1331
1332         if (rc != LDAP_SUCCESS) {
1333                 DEBUG(2,("Problem during LDAPsearch: %s\n", ldap_err2string (rc)));
1334                 DEBUG(2,("Query was: %s, %s\n", lp_ldap_suffix(), filter));
1335         } else if (ldap_count_entries(ldap_state->ldap_struct, *result) < 1) {
1336                 DEBUG(3, ("Got no domain info entries for domain\n"));
1337                 ldap_msgfree(*result);
1338                 *result = NULL;
1339                 if (try_add && NT_STATUS_IS_OK(ret = add_new_domain_info(ldap_state, domain_name))) {
1340                         return smbldap_search_domain_info(ldap_state, result, domain_name, False);
1341                 }
1342                 else {
1343                         DEBUG(0, ("Adding domain info for %s failed with %s\n",
1344                                 domain_name, nt_errstr(ret)));
1345                         return ret;
1346                 }
1347         } else if ((count = ldap_count_entries(ldap_state->ldap_struct, *result)) > 1) {
1348                 DEBUG(0, ("Got too many (%d) domain info entries for domain %s\n",
1349                           count, domain_name));
1350                 ldap_msgfree(*result);
1351                 *result = NULL;
1352                 return ret;
1353         } else {
1354                 return NT_STATUS_OK;
1355         }
1356
1357         return ret;
1358 }
1359
1360 /*******************************************************************
1361  Return a copy of the DN for a LDAPMessage. Convert from utf8 to CH_UNIX.
1362 ********************************************************************/
1363
1364 char *smbldap_get_dn(LDAP *ld, LDAPMessage *entry)
1365 {
1366         char *utf8_dn, *unix_dn;
1367
1368         utf8_dn = ldap_get_dn(ld, entry);
1369         if (!utf8_dn) {
1370                 DEBUG (5, ("smbldap_get_dn: ldap_get_dn failed\n"));
1371                 return NULL;
1372         }
1373         if (pull_utf8_allocate((void **) &unix_dn, utf8_dn) == (size_t)-1) {
1374                 DEBUG (0, ("smbldap_get_dn: String conversion failure utf8 [%s]\n", utf8_dn));
1375                 return NULL;
1376         }
1377         ldap_memfree(utf8_dn);
1378         return unix_dn;
1379 }