source/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                 if (existed) {
 442                         /* There has been no value before, so don't delete it.
 443                          * Here's a possible race: We might end up with
 444                          * duplicate attributes */
 445                         /* By deleting exactly the value we found in the entry this
 446                          * should be race-free in the sense that the LDAP-Server will
 447                          * deny the complete operation if somebody changed the
 448                          * attribute behind our back. */
 449                         /* This will also allow modifying single valued attributes
 450                          * in Novell NDS. In NDS you have to first remove attribute and then
 451                          * you could add new value */
 452
 453                          smbldap_set_mod(mods, LDAP_MOD_DELETE, attribute, oldval);
 454                 }
 455
 456                 smbldap_set_mod(mods, LDAP_MOD_ADD, attribute, newval);
 457         }
 458 }
 459
 460 /**********************************************************************
 461  Some varients of the LDAP rebind code do not pass in the third 'arg'
 462  pointer to a void*, so we try and work around it by assuming that the
 463  value of the 'LDAP *' pointer is the same as the one we had passed in
 464  **********************************************************************/
 465
 466 struct smbldap_state_lookup {
 467         LDAP *ld;
 468         struct smbldap_state *smbldap_state;
 469         struct smbldap_state_lookup *prev, *next;
 470 };
 471
 472 static struct smbldap_state_lookup *smbldap_state_lookup_list;
 473
 474 static struct smbldap_state *smbldap_find_state(LDAP *ld)
 475 {
 476         struct smbldap_state_lookup *t;
 477
 478         for (t = smbldap_state_lookup_list; t; t = t->next) {
 479                 if (t->ld == ld) {
 480                         return t->smbldap_state;
 481                 }
 482         }
 483         return NULL;
 484 }
 485
 486 static void smbldap_delete_state(struct smbldap_state *smbldap_state)
 487 {
 488         struct smbldap_state_lookup *t;
 489
 490         for (t = smbldap_state_lookup_list; t; t = t->next) {
 491                 if (t->smbldap_state == smbldap_state) {
 492                         DLIST_REMOVE(smbldap_state_lookup_list, t);
 493                         SAFE_FREE(t);
 494                         return;
 495                 }
 496         }
 497 }
 498
 499 static void smbldap_store_state(LDAP *ld, struct smbldap_state *smbldap_state)
 500 {
 501         struct smbldap_state *tmp_ldap_state;
 502         struct smbldap_state_lookup *t;
 503         struct smbldap_state_lookup *tmp;
 504
 505         if ((tmp_ldap_state = smbldap_find_state(ld))) {
 506                 SMB_ASSERT(tmp_ldap_state == smbldap_state);
 507                 return;
 508         }
 509
 510         t = smb_xmalloc(sizeof(*t));
 511         ZERO_STRUCTP(t);
 512
 513         DLIST_ADD_END(smbldap_state_lookup_list, t, tmp);
 514         t->ld = ld;
 515         t->smbldap_state = smbldap_state;
 516 }
 517
 518 /*******************************************************************
 519  open a connection to the ldap server.
 520 ******************************************************************/
 521 static int smbldap_open_connection (struct smbldap_state *ldap_state)
 522
 523 {
 524         int rc = LDAP_SUCCESS;
 525         int version;
 526         BOOL ldap_v3 = False;
 527         LDAP **ldap_struct = &ldap_state->ldap_struct;
 528
 529 #ifdef HAVE_LDAP_INITIALIZE
 530         DEBUG(10, ("smbldap_open_connection: %s\n", ldap_state->uri));
 531
 532         if ((rc = ldap_initialize(ldap_struct, ldap_state->uri)) != LDAP_SUCCESS) {
 533                 DEBUG(0, ("ldap_initialize: %s\n", ldap_err2string(rc)));
 534                 return rc;
 535         }
 536 #else
 537
 538         /* Parse the string manually */
 539
 540         {
 541                 int port = 0;
 542                 fstring protocol;
 543                 fstring host;
 544                 const char *p = ldap_state->uri;
 545                 SMB_ASSERT(sizeof(protocol)>10 && sizeof(host)>254);
 546
 547                 /* skip leading "URL:" (if any) */
 548                 if ( strnequal( p, "URL:", 4 ) ) {
 549                         p += 4;
 550                 }
 551
 552                 sscanf(p, "%10[^:]://%254[^:/]:%d", protocol, host, &port);
 553
 554                 if (port == 0) {
 555                         if (strequal(protocol, "ldap")) {
 556                                 port = LDAP_PORT;
 557                         } else if (strequal(protocol, "ldaps")) {
 558                                 port = LDAPS_PORT;
 559                         } else {
 560                                 DEBUG(0, ("unrecognised protocol (%s)!\n", protocol));
 561                         }
 562                 }
 563
 564                 if ((*ldap_struct = ldap_init(host, port)) == NULL)     {
 565                         DEBUG(0, ("ldap_init failed !\n"));
 566                         return LDAP_OPERATIONS_ERROR;
 567                 }
 568
 569                 if (strequal(protocol, "ldaps")) {
 570 #ifdef LDAP_OPT_X_TLS
 571                         int tls = LDAP_OPT_X_TLS_HARD;
 572                         if (ldap_set_option (*ldap_struct, LDAP_OPT_X_TLS, &tls) != LDAP_SUCCESS)
 573                         {
 574                                 DEBUG(0, ("Failed to setup a TLS session\n"));
 575                         }
 576
 577                         DEBUG(3,("LDAPS option set...!\n"));
 578 #else
 579                         DEBUG(0,("smbldap_open_connection: Secure connection not supported by LDAP client libraries!\n"));
 580                         return LDAP_OPERATIONS_ERROR;
 581 #endif
 582                 }
 583         }
 584 #endif
 585
 586         /* Store the LDAP pointer in a lookup list */
 587
 588         smbldap_store_state(*ldap_struct, ldap_state);
 589
 590         /* Upgrade to LDAPv3 if possible */
 591
 592         if (ldap_get_option(*ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version) == LDAP_OPT_SUCCESS)
 593         {
 594                 if (version != LDAP_VERSION3)
 595                 {
 596                         version = LDAP_VERSION3;
 597                         if (ldap_set_option (*ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version) == LDAP_OPT_SUCCESS) {
 598                                 ldap_v3 = True;
 599                         }
 600                 } else {
 601                         ldap_v3 = True;
 602                 }
 603         }
 604
 605         if (lp_ldap_ssl() == LDAP_SSL_START_TLS) {
 606 #ifdef LDAP_OPT_X_TLS
 607                 if (ldap_v3) {
 608                         if ((rc = ldap_start_tls_s (*ldap_struct, NULL, NULL)) != LDAP_SUCCESS)
 609                         {
 610                                 DEBUG(0,("Failed to issue the StartTLS instruction: %s\n",
 611                                          ldap_err2string(rc)));
 612                                 return rc;
 613                         }
 614                         DEBUG (3, ("StartTLS issued: using a TLS connection\n"));
 615                 } else {
 616
 617                         DEBUG(0, ("Need LDAPv3 for Start TLS\n"));
 618                         return LDAP_OPERATIONS_ERROR;
 619                 }
 620 #else
 621                 DEBUG(0,("smbldap_open_connection: StartTLS not supported by LDAP client libraries!\n"));
 622                 return LDAP_OPERATIONS_ERROR;
 623 #endif
 624         }
 625
 626         DEBUG(2, ("smbldap_open_connection: connection opened\n"));
 627         return rc;
 628 }
 629
 630
 631 /*******************************************************************
 632  a rebind function for authenticated referrals
 633  This version takes a void* that we can shove useful stuff in :-)
 634 ******************************************************************/
 635 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
 636 #else
 637 static int rebindproc_with_state  (LDAP * ld, char **whop, char **credp,
 638                                    int *methodp, int freeit, void *arg)
 639 {
 640         struct smbldap_state *ldap_state = arg;
 641
 642         /** @TODO Should we be doing something to check what servers we rebind to?
 643             Could we get a referral to a machine that we don't want to give our
 644             username and password to? */
 645
 646         if (freeit) {
 647                 SAFE_FREE(*whop);
 648                 memset(*credp, '\0', strlen(*credp));
 649                 SAFE_FREE(*credp);
 650         } else {
 651                 DEBUG(5,("rebind_proc_with_state: Rebinding as \"%s\"\n",
 652                           ldap_state->bind_dn));
 653
 654                 *whop = strdup(ldap_state->bind_dn);
 655                 if (!*whop) {
 656                         return LDAP_NO_MEMORY;
 657                 }
 658                 *credp = strdup(ldap_state->bind_secret);
 659                 if (!*credp) {
 660                         SAFE_FREE(*whop);
 661                         return LDAP_NO_MEMORY;
 662                 }
 663                 *methodp = LDAP_AUTH_SIMPLE;
 664         }
 665
 666         gettimeofday(&(ldap_state->last_rebind),NULL);
 667
 668         return 0;
 669 }
 670 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 671
 672 /*******************************************************************
 673  a rebind function for authenticated referrals
 674  This version takes a void* that we can shove useful stuff in :-)
 675  and actually does the connection.
 676 ******************************************************************/
 677 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
 678 static int rebindproc_connect_with_state (LDAP *ldap_struct,
 679                                           LDAP_CONST char *url,
 680                                           ber_tag_t request,
 681                                           ber_int_t msgid, void *arg)
 682 {
 683         struct smbldap_state *ldap_state = arg;
 684         int rc;
 685         DEBUG(5,("rebindproc_connect_with_state: Rebinding as \"%s\"\n",
 686                  ldap_state->bind_dn));
 687
 688         /** @TODO Should we be doing something to check what servers we rebind to?
 689             Could we get a referral to a machine that we don't want to give our
 690             username and password to? */
 691
 692         rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
 693
 694         gettimeofday(&(ldap_state->last_rebind),NULL);
 695
 696         return rc;
 697 }
 698 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 699
 700 /*******************************************************************
 701  Add a rebind function for authenticated referrals
 702 ******************************************************************/
 703 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
 704 #else
 705 # if LDAP_SET_REBIND_PROC_ARGS == 2
 706 static int rebindproc (LDAP *ldap_struct, char **whop, char **credp,
 707                        int *method, int freeit )
 708 {
 709         struct smbldap_state *ldap_state = smbldap_find_state(ldap_struct);
 710
 711         return rebindproc_with_state(ldap_struct, whop, credp,
 712                                      method, freeit, ldap_state);
 713
 714 }
 715 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
 716 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 717
 718 /*******************************************************************
 719  a rebind function for authenticated referrals
 720  this also does the connection, but no void*.
 721 ******************************************************************/
 722 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
 723 # if LDAP_SET_REBIND_PROC_ARGS == 2
 724 static int rebindproc_connect (LDAP * ld, LDAP_CONST char *url, int request,
 725                                ber_int_t msgid)
 726 {
 727         struct smbldap_state *ldap_state = smbldap_find_state(ld);
 728
 729         return rebindproc_connect_with_state(ld, url, (ber_tag_t)request, msgid,
 730                                              ldap_state);
 731 }
 732 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
 733 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 734
 735 /*******************************************************************
 736  connect to the ldap server under system privilege.
 737 ******************************************************************/
 738 static int smbldap_connect_system(struct smbldap_state *ldap_state, LDAP * ldap_struct)
 739 {
 740         int rc;
 741         char *ldap_dn;
 742         char *ldap_secret;
 743
 744         /* get the password */
 745         if (!fetch_ldap_pw(&ldap_dn, &ldap_secret))
 746         {
 747                 DEBUG(0, ("ldap_connect_system: Failed to retrieve password from secrets.tdb\n"));
 748                 return LDAP_INVALID_CREDENTIALS;
 749         }
 750
 751         ldap_state->bind_dn = ldap_dn;
 752         ldap_state->bind_secret = ldap_secret;
 753
 754         /* removed the sasl_bind_s "EXTERNAL" stuff, as my testsuite
 755            (OpenLDAP) doesnt' seem to support it */
 756
 757         DEBUG(10,("ldap_connect_system: Binding to ldap server %s as \"%s\"\n",
 758                   ldap_state->uri, ldap_dn));
 759
 760 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
 761 # if LDAP_SET_REBIND_PROC_ARGS == 2
 762         ldap_set_rebind_proc(ldap_struct, &rebindproc_connect);
 763 # endif
 764 # if LDAP_SET_REBIND_PROC_ARGS == 3
 765         ldap_set_rebind_proc(ldap_struct, &rebindproc_connect_with_state, (void *)ldap_state);
 766 # endif
 767 #else /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 768 # if LDAP_SET_REBIND_PROC_ARGS == 2
 769         ldap_set_rebind_proc(ldap_struct, &rebindproc);
 770 # endif
 771 # if LDAP_SET_REBIND_PROC_ARGS == 3
 772         ldap_set_rebind_proc(ldap_struct, &rebindproc_with_state, (void *)ldap_state);
 773 # endif
 774 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 775
 776         rc = ldap_simple_bind_s(ldap_struct, ldap_dn, ldap_secret);
 777
 778         if (rc != LDAP_SUCCESS) {
 779                 char *ld_error = NULL;
 780                 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
 781                                 &ld_error);
 782                 DEBUG(ldap_state->num_failures ? 2 : 0,
 783                       ("failed to bind to server with dn= %s Error: %s\n\t%s\n",
 784                                ldap_dn ? ldap_dn : "(unknown)", ldap_err2string(rc),
 785                                ld_error ? ld_error : "(unknown)"));
 786                 SAFE_FREE(ld_error);
 787                 ldap_state->num_failures++;
 788                 return rc;
 789         }
 790
 791         ldap_state->num_failures = 0;
 792
 793         DEBUG(3, ("ldap_connect_system: succesful connection to the LDAP server\n"));
 794         return rc;
 795 }
 796
 797 /**********************************************************************
 798 Connect to LDAP server (called before every ldap operation)
 799 *********************************************************************/
 800 static int smbldap_open(struct smbldap_state *ldap_state)
 801 {
 802         int rc;
 803         SMB_ASSERT(ldap_state);
 804
 805 #ifndef NO_LDAP_SECURITY
 806         if (geteuid() != 0) {
 807                 DEBUG(0, ("smbldap_open: cannot access LDAP when not root..\n"));
 808                 return  LDAP_INSUFFICIENT_ACCESS;
 809         }
 810 #endif
 811
 812         if ((ldap_state->ldap_struct != NULL) && ((ldap_state->last_ping + SMBLDAP_DONT_PING_TIME) < time(NULL))) {
 813                 struct sockaddr_un addr;
 814                 socklen_t len = sizeof(addr);
 815                 int sd;
 816                 if (ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_DESC, &sd) == 0 &&
 817                     getpeername(sd, (struct sockaddr *) &addr, &len) < 0) {
 818                         /* the other end has died. reopen. */
 819                         ldap_unbind_ext(ldap_state->ldap_struct, NULL, NULL);
 820                         ldap_state->ldap_struct = NULL;
 821                         ldap_state->last_ping = (time_t)0;
 822                 } else {
 823                         ldap_state->last_ping = time(NULL);
 824                 }
 825         }
 826
 827         if (ldap_state->ldap_struct != NULL) {
 828                 DEBUG(11,("smbldap_open: already connected to the LDAP server\n"));
 829                 return LDAP_SUCCESS;
 830         }
 831
 832         if ((rc = smbldap_open_connection(ldap_state))) {
 833                 return rc;
 834         }
 835
 836         if ((rc = smbldap_connect_system(ldap_state, ldap_state->ldap_struct))) {
 837                 ldap_unbind_ext(ldap_state->ldap_struct, NULL, NULL);
 838                 ldap_state->ldap_struct = NULL;
 839                 return rc;
 840         }
 841
 842
 843         ldap_state->last_ping = time(NULL);
 844         DEBUG(4,("The LDAP server is succesful connected\n"));
 845
 846         return LDAP_SUCCESS;
 847 }
 848
 849 /**********************************************************************
 850 Disconnect from LDAP server
 851 *********************************************************************/
 852 static NTSTATUS smbldap_close(struct smbldap_state *ldap_state)
 853 {
 854         if (!ldap_state)
 855                 return NT_STATUS_INVALID_PARAMETER;
 856
 857         if (ldap_state->ldap_struct != NULL) {
 858                 ldap_unbind_ext(ldap_state->ldap_struct, NULL, NULL);
 859                 ldap_state->ldap_struct = NULL;
 860         }
 861
 862         smbldap_delete_state(ldap_state);
 863
 864         DEBUG(5,("The connection to the LDAP server was closed\n"));
 865         /* maybe free the results here --metze */
 866
 867
 868
 869         return NT_STATUS_OK;
 870 }
 871
 872 int smbldap_retry_open(struct smbldap_state *ldap_state, int *attempts)
 873 {
 874         int rc;
 875
 876         SMB_ASSERT(ldap_state && attempts);
 877
 878         if (*attempts != 0) {
 879                 unsigned int sleep_time;
 880                 uint8 rand_byte;
 881
 882                 /* Sleep for a random timeout */
 883                 rand_byte = (char)(sys_random());
 884
 885                 sleep_time = (((*attempts)*(*attempts))/2)*rand_byte*2;
 886                 /* we retry after (0.5, 1, 2, 3, 4.5, 6) seconds
 887                    on average.
 888                  */
 889                 DEBUG(3, ("Sleeping for %u milliseconds before reconnecting\n",
 890                           sleep_time));
 891                 msleep(sleep_time);
 892         }
 893         (*attempts)++;
 894
 895         if ((rc = smbldap_open(ldap_state))) {
 896                 DEBUG(1,("Connection to LDAP Server failed for the %d try!\n",*attempts));
 897                 return rc;
 898         }
 899
 900         return LDAP_SUCCESS;
 901 }
 902
 903
 904 /*********************************************************************
 905  ********************************************************************/
 906
 907 int smbldap_search(struct smbldap_state *ldap_state,
 908                    const char *base, int scope, const char *filter,
 909                    char *attrs[], int attrsonly,
 910                    LDAPMessage **res)
 911 {
 912         int             rc = LDAP_SERVER_DOWN;
 913         int             attempts = 0;
 914         char           *utf8_filter;
 915
 916         SMB_ASSERT(ldap_state);
 917
 918         if (ldap_state->last_rebind.tv_sec > 0) {
 919                 struct timeval  tval;
 920                 int             tdiff = 0;
 921                 int             sleep_time = 0;
 922
 923                 ZERO_STRUCT(tval);
 924
 925                 gettimeofday(&tval,NULL);
 926
 927                 tdiff = 1000000 *(tval.tv_sec - ldap_state->last_rebind.tv_sec) +
 928                         (tval.tv_usec - ldap_state->last_rebind.tv_usec);
 929
 930                 sleep_time = ((1000*lp_ldap_replication_sleep())-tdiff)/1000;
 931
 932                 if (sleep_time > 0) {
 933                         /* we wait for the LDAP replication */
 934                         DEBUG(5,("smbldap_search: waiting %d milliseconds for LDAP replication.\n",sleep_time));
 935                         msleep(sleep_time);
 936                         DEBUG(5,("smbldap_search: go on!\n"));
 937                         ZERO_STRUCT(ldap_state->last_rebind);
 938                 }
 939         }
 940
 941         if (push_utf8_allocate(&utf8_filter, filter) == (size_t)-1) {
 942                 return LDAP_NO_MEMORY;
 943         }
 944
 945         while ((rc == LDAP_SERVER_DOWN) && (attempts < SMBLDAP_NUM_RETRIES)) {
 946
 947                 if ((rc = smbldap_retry_open(ldap_state,&attempts)) != LDAP_SUCCESS)
 948                         continue;
 949
 950                 rc = ldap_search_s(ldap_state->ldap_struct, base, scope,
 951                                    utf8_filter, attrs, attrsonly, res);
 952         }
 953
 954         if (rc == LDAP_SERVER_DOWN) {
 955                 DEBUG(0,("%s: LDAP server is down!\n",FUNCTION_MACRO));
 956                 smbldap_close(ldap_state);
 957         }
 958
 959         ldap_state->last_use = time(NULL);
 960
 961         SAFE_FREE(utf8_filter);
 962         return rc;
 963 }
 964
 965 int smbldap_modify(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
 966 {
 967         int             rc = LDAP_SERVER_DOWN;
 968         int             attempts = 0;
 969         char           *utf8_dn;
 970
 971         SMB_ASSERT(ldap_state);
 972
 973         if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
 974                 return LDAP_NO_MEMORY;
 975         }
 976
 977         while ((rc == LDAP_SERVER_DOWN) && (attempts < SMBLDAP_NUM_RETRIES)) {
 978
 979                 if ((rc = smbldap_retry_open(ldap_state,&attempts)) != LDAP_SUCCESS)
 980                         continue;
 981
 982                 rc = ldap_modify_s(ldap_state->ldap_struct, utf8_dn, attrs);
 983         }
 984
 985         if (rc == LDAP_SERVER_DOWN) {
 986                 DEBUG(0,("%s: LDAP server is down!\n",FUNCTION_MACRO));
 987                 smbldap_close(ldap_state);
 988         }
 989
 990         ldap_state->last_use = time(NULL);
 991
 992         SAFE_FREE(utf8_dn);
 993         return rc;
 994 }
 995
 996 int smbldap_add(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
 997 {
 998         int             rc = LDAP_SERVER_DOWN;
 999         int             attempts = 0;
1000         char           *utf8_dn;
1001
1002         SMB_ASSERT(ldap_state);
1003
1004         if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1005                 return LDAP_NO_MEMORY;
1006         }
1007
1008         while ((rc == LDAP_SERVER_DOWN) && (attempts < SMBLDAP_NUM_RETRIES)) {
1009
1010                 if ((rc = smbldap_retry_open(ldap_state,&attempts)) != LDAP_SUCCESS)
1011                         continue;
1012
1013                 rc = ldap_add_s(ldap_state->ldap_struct, utf8_dn, attrs);
1014         }
1015
1016         if (rc == LDAP_SERVER_DOWN) {
1017                 DEBUG(0,("%s: LDAP server is down!\n",FUNCTION_MACRO));
1018                 smbldap_close(ldap_state);
1019         }
1020
1021         ldap_state->last_use = time(NULL);
1022
1023         SAFE_FREE(utf8_dn);
1024         return rc;
1025 }
1026
1027 int smbldap_delete(struct smbldap_state *ldap_state, const char *dn)
1028 {
1029         int             rc = LDAP_SERVER_DOWN;
1030         int             attempts = 0;
1031         char           *utf8_dn;
1032
1033         SMB_ASSERT(ldap_state);
1034
1035         if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1036                 return LDAP_NO_MEMORY;
1037         }
1038
1039         while ((rc == LDAP_SERVER_DOWN) && (attempts < SMBLDAP_NUM_RETRIES)) {
1040
1041                 if ((rc = smbldap_retry_open(ldap_state,&attempts)) != LDAP_SUCCESS)
1042                         continue;
1043
1044                 rc = ldap_delete_s(ldap_state->ldap_struct, utf8_dn);
1045         }
1046
1047         if (rc == LDAP_SERVER_DOWN) {
1048                 DEBUG(0,("%s: LDAP server is down!\n",FUNCTION_MACRO));
1049                 smbldap_close(ldap_state);
1050         }
1051
1052         ldap_state->last_use = time(NULL);
1053
1054         SAFE_FREE(utf8_dn);
1055         return rc;
1056 }
1057
1058 int smbldap_extended_operation(struct smbldap_state *ldap_state,
1059                                LDAP_CONST char *reqoid, struct berval *reqdata,
1060                                LDAPControl **serverctrls, LDAPControl **clientctrls,
1061                                char **retoidp, struct berval **retdatap)
1062 {
1063         int             rc = LDAP_SERVER_DOWN;
1064         int             attempts = 0;
1065
1066         if (!ldap_state)
1067                 return (-1);
1068
1069         while ((rc == LDAP_SERVER_DOWN) && (attempts < SMBLDAP_NUM_RETRIES)) {
1070
1071                 if ((rc = smbldap_retry_open(ldap_state,&attempts)) != LDAP_SUCCESS)
1072                         continue;
1073
1074                 rc = ldap_extended_operation_s(ldap_state->ldap_struct, reqoid, reqdata,
1075                                                serverctrls, clientctrls, retoidp, retdatap);
1076         }
1077
1078         if (rc == LDAP_SERVER_DOWN) {
1079                 DEBUG(0,("%s: LDAP server is down!\n",FUNCTION_MACRO));
1080                 smbldap_close(ldap_state);
1081         }
1082
1083         ldap_state->last_use = time(NULL);
1084
1085         return rc;
1086 }
1087
1088 /*******************************************************************
1089  run the search by name.
1090 ******************************************************************/
1091 int smbldap_search_suffix (struct smbldap_state *ldap_state, const char *filter,
1092                            char **search_attr, LDAPMessage ** result)
1093 {
1094         int scope = LDAP_SCOPE_SUBTREE;
1095         int rc;
1096
1097         DEBUG(2, ("smbldap_search_suffix: searching for:[%s]\n", filter));
1098
1099         rc = smbldap_search(ldap_state, lp_ldap_suffix(), scope, filter, search_attr, 0, result);
1100
1101         if (rc != LDAP_SUCCESS) {
1102                 char *ld_error = NULL;
1103                 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
1104                                 &ld_error);
1105                 DEBUG(0,("smbldap_search_suffix: Problem during the LDAP search: %s (%s)\n",
1106                         ld_error?ld_error:"(unknown)", ldap_err2string (rc)));
1107                 DEBUG(3,("smbldap_search_suffix: Query was: %s, %s\n", lp_ldap_suffix(),
1108                         filter));
1109                 SAFE_FREE(ld_error);
1110         }
1111
1112         return rc;
1113 }
1114
1115 static void smbldap_idle_fn(void **data, time_t *interval, time_t now)
1116 {
1117         struct smbldap_state *state = (struct smbldap_state *)(*data);
1118
1119         if (state->ldap_struct == NULL) {
1120                 DEBUG(10,("ldap connection not connected...\n"));
1121                 return;
1122         }
1123
1124         if ((state->last_use+SMBLDAP_IDLE_TIME) > now) {
1125                 DEBUG(10,("ldap connection not idle...\n"));
1126                 return;
1127         }
1128
1129         DEBUG(7,("ldap connection idle...closing connection\n"));
1130         smbldap_close(state);
1131 }
1132
1133 /**********************************************************************
1134  Housekeeping
1135  *********************************************************************/
1136
1137 void smbldap_free_struct(struct smbldap_state **ldap_state)
1138 {
1139         smbldap_close(*ldap_state);
1140
1141         if ((*ldap_state)->bind_secret) {
1142                 memset((*ldap_state)->bind_secret, '\0', strlen((*ldap_state)->bind_secret));
1143         }
1144
1145         SAFE_FREE((*ldap_state)->bind_dn);
1146         SAFE_FREE((*ldap_state)->bind_secret);
1147
1148         smb_unregister_idle_event((*ldap_state)->event_id);
1149
1150         *ldap_state = NULL;
1151
1152         /* No need to free any further, as it is talloc()ed */
1153 }
1154
1155
1156 /**********************************************************************
1157  Intitalise the 'general' ldap structures, on which ldap operations may be conducted
1158  *********************************************************************/
1159
1160 NTSTATUS smbldap_init(TALLOC_CTX *mem_ctx, const char *location, struct smbldap_state **smbldap_state)
1161 {
1162         *smbldap_state = talloc_zero(mem_ctx, sizeof(**smbldap_state));
1163         if (!*smbldap_state) {
1164                 DEBUG(0, ("talloc() failed for ldapsam private_data!\n"));
1165                 return NT_STATUS_NO_MEMORY;
1166         }
1167
1168         if (location) {
1169                 (*smbldap_state)->uri = talloc_strdup(mem_ctx, location);
1170         } else {
1171                 (*smbldap_state)->uri = "ldap://localhost";
1172         }
1173
1174         (*smbldap_state)->event_id =
1175                 smb_register_idle_event(smbldap_idle_fn, (void *)(*smbldap_state),
1176                                         SMBLDAP_IDLE_TIME);
1177
1178         if ((*smbldap_state)->event_id == SMB_EVENT_ID_INVALID) {
1179                 DEBUG(0,("Failed to register LDAP idle event!\n"));
1180                 return NT_STATUS_INVALID_HANDLE;
1181         }
1182
1183         return NT_STATUS_OK;
1184 }
1185
1186 /**********************************************************************
1187  Add the sambaDomain to LDAP, so we don't have to search for this stuff
1188  again.  This is a once-add operation for now.
1189
1190  TODO:  Add other attributes, and allow modification.
1191 *********************************************************************/
1192 static NTSTATUS add_new_domain_info(struct smbldap_state *ldap_state,
1193                                     const char *domain_name)
1194 {
1195         fstring sid_string;
1196         fstring algorithmic_rid_base_string;
1197         pstring filter, dn;
1198         LDAPMod **mods = NULL;
1199         int rc;
1200         int ldap_op;
1201         LDAPMessage *result = NULL;
1202         int num_result;
1203         char **attr_list;
1204         uid_t u_low, u_high;
1205         gid_t g_low, g_high;
1206         uint32 rid_low, rid_high;
1207
1208         slprintf (filter, sizeof (filter) - 1, "(&(%s=%s)(objectclass=%s))",
1209                   get_attr_key2string(dominfo_attr_list, LDAP_ATTR_DOMAIN),
1210                   domain_name, LDAP_OBJ_DOMINFO);
1211
1212         attr_list = get_attr_list( dominfo_attr_list );
1213         rc = smbldap_search_suffix(ldap_state, filter, attr_list, &result);
1214         free_attr_list( attr_list );
1215
1216         if (rc != LDAP_SUCCESS) {
1217                 return NT_STATUS_UNSUCCESSFUL;
1218         }
1219
1220         num_result = ldap_count_entries(ldap_state->ldap_struct, result);
1221
1222         if (num_result > 1) {
1223                 DEBUG (0, ("More than domain with that name exists: bailing out!\n"));
1224                 ldap_msgfree(result);
1225                 return NT_STATUS_UNSUCCESSFUL;
1226         }
1227
1228         /* Check if we need to add an entry */
1229         DEBUG(3,("Adding new domain\n"));
1230         ldap_op = LDAP_MOD_ADD;
1231
1232         pstr_sprintf(dn, "%s=%s,%s", get_attr_key2string(dominfo_attr_list, LDAP_ATTR_DOMAIN),
1233                 domain_name, lp_ldap_suffix());
1234
1235         /* Free original search */
1236         ldap_msgfree(result);
1237
1238         /* make the changes - the entry *must* not already have samba attributes */
1239         smbldap_set_mod(&mods, LDAP_MOD_ADD, get_attr_key2string(dominfo_attr_list, LDAP_ATTR_DOMAIN),
1240                 domain_name);
1241
1242         /* If we don't have an entry, then ask secrets.tdb for what it thinks.
1243            It may choose to make it up */
1244
1245         sid_to_string(sid_string, get_global_sam_sid());
1246         smbldap_set_mod(&mods, LDAP_MOD_ADD, get_attr_key2string(dominfo_attr_list, LDAP_ATTR_DOM_SID), sid_string);
1247
1248         slprintf(algorithmic_rid_base_string, sizeof(algorithmic_rid_base_string) - 1, "%i", algorithmic_rid_base());
1249         smbldap_set_mod(&mods, LDAP_MOD_ADD, get_attr_key2string(dominfo_attr_list, LDAP_ATTR_ALGORITHMIC_RID_BASE),
1250                         algorithmic_rid_base_string);
1251         smbldap_set_mod(&mods, LDAP_MOD_ADD, "objectclass", LDAP_OBJ_DOMINFO);
1252
1253         /* add the sambaNext[User|Group]Rid attributes if the idmap ranges are set.
1254            TODO: fix all the places where the line between idmap and normal operations
1255            needed by smbd gets fuzzy   --jerry 2003-08-11                              */
1256
1257         if ( lp_idmap_uid(&u_low, &u_high) && lp_idmap_gid(&g_low, &g_high)
1258                 && get_free_rid_range(&rid_low, &rid_high) )
1259         {
1260                 fstring rid_str;
1261
1262                 fstr_sprintf( rid_str, "%i", rid_high|USER_RID_TYPE );
1263                 DEBUG(10,("setting next available user rid [%s]\n", rid_str));
1264                 smbldap_set_mod(&mods, LDAP_MOD_ADD,
1265                         get_attr_key2string(dominfo_attr_list, LDAP_ATTR_NEXT_USERRID),
1266                         rid_str);
1267
1268                 fstr_sprintf( rid_str, "%i", rid_high|GROUP_RID_TYPE );
1269                 DEBUG(10,("setting next available group rid [%s]\n", rid_str));
1270                 smbldap_set_mod(&mods, LDAP_MOD_ADD,
1271                         get_attr_key2string(dominfo_attr_list, LDAP_ATTR_NEXT_GROUPRID),
1272                         rid_str);
1273
1274         }
1275
1276
1277         switch(ldap_op)
1278         {
1279         case LDAP_MOD_ADD:
1280                 rc = smbldap_add(ldap_state, dn, mods);
1281                 break;
1282         case LDAP_MOD_REPLACE:
1283                 rc = smbldap_modify(ldap_state, dn, mods);
1284                 break;
1285         default:
1286                 DEBUG(0,("Wrong LDAP operation type: %d!\n", ldap_op));
1287                 return NT_STATUS_INVALID_PARAMETER;
1288         }
1289
1290         if (rc!=LDAP_SUCCESS) {
1291                 char *ld_error = NULL;
1292                 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING, &ld_error);
1293                 DEBUG(1,("failed to %s domain dn= %s with: %s\n\t%s\n",
1294                        ldap_op == LDAP_MOD_ADD ? "add" : "modify",
1295                        dn, ldap_err2string(rc),
1296                        ld_error?ld_error:"unknown"));
1297                 SAFE_FREE(ld_error);
1298
1299                 ldap_mods_free(mods, True);
1300                 return NT_STATUS_UNSUCCESSFUL;
1301         }
1302
1303         DEBUG(2,("added: domain = %s in the LDAP database\n", domain_name));
1304         ldap_mods_free(mods, True);
1305         return NT_STATUS_OK;
1306 }
1307
1308 /**********************************************************************
1309 Search for the domain info entry
1310 *********************************************************************/
1311 NTSTATUS smbldap_search_domain_info(struct smbldap_state *ldap_state,
1312                                     LDAPMessage ** result, const char *domain_name,
1313                                     BOOL try_add)
1314 {
1315         NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
1316         pstring filter;
1317         int rc;
1318         char **attr_list;
1319         int count;
1320
1321         pstr_sprintf(filter, "(&(objectClass=%s)(%s=%s))",
1322                 LDAP_OBJ_DOMINFO,
1323                 get_attr_key2string(dominfo_attr_list, LDAP_ATTR_DOMAIN),
1324                 domain_name);
1325
1326         DEBUG(2, ("Searching for:[%s]\n", filter));
1327
1328
1329         attr_list = get_attr_list( dominfo_attr_list );
1330         rc = smbldap_search_suffix(ldap_state, filter, attr_list , result);
1331         free_attr_list( attr_list );
1332
1333         if (rc != LDAP_SUCCESS) {
1334                 DEBUG(2,("Problem during LDAPsearch: %s\n", ldap_err2string (rc)));
1335                 DEBUG(2,("Query was: %s, %s\n", lp_ldap_suffix(), filter));
1336         } else if (ldap_count_entries(ldap_state->ldap_struct, *result) < 1) {
1337                 DEBUG(3, ("Got no domain info entries for domain\n"));
1338                 ldap_msgfree(*result);
1339                 *result = NULL;
1340                 if (try_add && NT_STATUS_IS_OK(ret = add_new_domain_info(ldap_state, domain_name))) {
1341                         return smbldap_search_domain_info(ldap_state, result, domain_name, False);
1342                 }
1343                 else {
1344                         DEBUG(0, ("Adding domain info for %s failed with %s\n",
1345                                 domain_name, nt_errstr(ret)));
1346                         return ret;
1347                 }
1348         } else if ((count = ldap_count_entries(ldap_state->ldap_struct, *result)) > 1) {
1349                 DEBUG(0, ("Got too many (%d) domain info entries for domain %s\n",
1350                           count, domain_name));
1351                 ldap_msgfree(*result);
1352                 *result = NULL;
1353                 return ret;
1354         } else {
1355                 return NT_STATUS_OK;
1356         }
1357
1358         return ret;
1359 }
1360
1361 /*******************************************************************
1362  Return a copy of the DN for a LDAPMessage. Convert from utf8 to CH_UNIX.
1363 ********************************************************************/
1364
1365 char *smbldap_get_dn(LDAP *ld, LDAPMessage *entry)
1366 {
1367         char *utf8_dn, *unix_dn;
1368
1369         utf8_dn = ldap_get_dn(ld, entry);
1370         if (!utf8_dn) {
1371                 DEBUG (5, ("smbldap_get_dn: ldap_get_dn failed\n"));
1372                 return NULL;
1373         }
1374         if (pull_utf8_allocate((void **) &unix_dn, utf8_dn) == (size_t)-1) {
1375                 DEBUG (0, ("smbldap_get_dn: String conversion failure utf8 [%s]\n", utf8_dn));
1376                 return NULL;
1377         }
1378         ldap_memfree(utf8_dn);
1379         return unix_dn;
1380 }