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_BAD_PASSWORD_COUNT, "sambaBadPasswordCount" },
 102         { LDAP_ATTR_BAD_PASSWORD_TIME,  "sambaBadPasswordTime"  },
 103         { LDAP_ATTR_MOD_TIMESTAMP,      "modifyTimestamp"       },
 104         { LDAP_ATTR_LIST_END,           NULL                    }
 105 };
 106
 107 /* attributes used for allocating RIDs */
 108
 109 ATTRIB_MAP_ENTRY dominfo_attr_list[] = {
 110         { LDAP_ATTR_DOMAIN,             "sambaDomainName"       },
 111         { LDAP_ATTR_NEXT_RID,           "sambaNextRid"          },
 112         { LDAP_ATTR_NEXT_USERRID,       "sambaNextUserRid"      },
 113         { LDAP_ATTR_NEXT_GROUPRID,      "sambaNextGroupRid"     },
 114         { LDAP_ATTR_DOM_SID,            LDAP_ATTRIBUTE_SID      },
 115         { LDAP_ATTR_ALGORITHMIC_RID_BASE,"sambaAlgorithmicRidBase"},
 116         { LDAP_ATTR_OBJCLASS,           "objectClass"           },
 117         { LDAP_ATTR_LIST_END,           NULL                    },
 118 };
 119
 120 /* Samba 3.0 group mapping attributes */
 121
 122 ATTRIB_MAP_ENTRY groupmap_attr_list[] = {
 123         { LDAP_ATTR_GIDNUMBER,          LDAP_ATTRIBUTE_GIDNUMBER},
 124         { LDAP_ATTR_GROUP_SID,          LDAP_ATTRIBUTE_SID      },
 125         { LDAP_ATTR_GROUP_TYPE,         "sambaGroupType"        },
 126         { LDAP_ATTR_SID_LIST,           "sambaSIDList"          },
 127         { LDAP_ATTR_DESC,               "description"           },
 128         { LDAP_ATTR_DISPLAY_NAME,       "displayName"           },
 129         { LDAP_ATTR_CN,                 "cn"                    },
 130         { LDAP_ATTR_OBJCLASS,           "objectClass"           },
 131         { LDAP_ATTR_LIST_END,           NULL                    }
 132 };
 133
 134 ATTRIB_MAP_ENTRY groupmap_attr_list_to_delete[] = {
 135         { LDAP_ATTR_GROUP_SID,          LDAP_ATTRIBUTE_SID      },
 136         { LDAP_ATTR_GROUP_TYPE,         "sambaGroupType"        },
 137         { LDAP_ATTR_DESC,               "description"           },
 138         { LDAP_ATTR_DISPLAY_NAME,       "displayName"           },
 139         { LDAP_ATTR_SID_LIST,           "sambaSIDList"          },
 140         { LDAP_ATTR_LIST_END,           NULL                    }
 141 };
 142
 143 /* idmap_ldap sambaUnixIdPool */
 144
 145 ATTRIB_MAP_ENTRY idpool_attr_list[] = {
 146         { LDAP_ATTR_UIDNUMBER,          LDAP_ATTRIBUTE_UIDNUMBER},
 147         { LDAP_ATTR_GIDNUMBER,          LDAP_ATTRIBUTE_GIDNUMBER},
 148         { LDAP_ATTR_OBJCLASS,           "objectClass"           },
 149         { LDAP_ATTR_LIST_END,           NULL                    }
 150 };
 151
 152 ATTRIB_MAP_ENTRY sidmap_attr_list[] = {
 153         { LDAP_ATTR_SID,                LDAP_ATTRIBUTE_SID      },
 154         { LDAP_ATTR_UIDNUMBER,          LDAP_ATTRIBUTE_UIDNUMBER},
 155         { LDAP_ATTR_GIDNUMBER,          LDAP_ATTRIBUTE_GIDNUMBER},
 156         { LDAP_ATTR_OBJCLASS,           "objectClass"           },
 157         { LDAP_ATTR_LIST_END,           NULL                    }
 158 };
 159
 160 /* privileges */
 161
 162 ATTRIB_MAP_ENTRY privilege_attr_list[] = {
 163         { LDAP_ATTR_CN,                 "sambaPrivName"         },
 164         { LDAP_ATTR_SID_LIST,           LDAP_ATTRIBUTE_SID_LIST },
 165         { LDAP_ATTR_DESC,               "description"           },
 166         { LDAP_ATTR_OBJCLASS,           "objectClass"           },
 167         { LDAP_ATTR_LIST_END,           NULL                    }
 168 };
 169
 170 /**********************************************************************
 171  perform a simple table lookup and return the attribute name
 172  **********************************************************************/
 173
 174  const char* get_attr_key2string( ATTRIB_MAP_ENTRY table[], int key )
 175 {
 176         int i = 0;
 177
 178         while ( table[i].attrib != LDAP_ATTR_LIST_END ) {
 179                 if ( table[i].attrib == key )
 180                         return table[i].name;
 181                 i++;
 182         }
 183
 184         return NULL;
 185 }
 186
 187
 188 /**********************************************************************
 189  Return the list of attribute names from a mapping table
 190  **********************************************************************/
 191
 192  char** get_attr_list( ATTRIB_MAP_ENTRY table[] )
 193 {
 194         char **names;
 195         int i = 0;
 196
 197         while ( table[i].attrib != LDAP_ATTR_LIST_END )
 198                 i++;
 199         i++;
 200
 201         names = (char**)malloc( sizeof(char*)*i );
 202         if ( !names ) {
 203                 DEBUG(0,("get_attr_list: out of memory\n"));
 204                 return NULL;
 205         }
 206
 207         i = 0;
 208         while ( table[i].attrib != LDAP_ATTR_LIST_END ) {
 209                 names[i] = strdup( table[i].name );
 210                 i++;
 211         }
 212         names[i] = NULL;
 213
 214         return names;
 215 }
 216
 217 /*********************************************************************
 218  Cleanup
 219  ********************************************************************/
 220
 221  void free_attr_list( char **list )
 222 {
 223         int i = 0;
 224
 225         if ( !list )
 226                 return;
 227
 228         while ( list[i] ) {
 229                 SAFE_FREE( list[i] );
 230                 i+=1;
 231         }
 232
 233         SAFE_FREE( list );
 234 }
 235
 236 /*******************************************************************
 237  find the ldap password
 238 ******************************************************************/
 239 static BOOL fetch_ldap_pw(char **dn, char** pw)
 240 {
 241         char *key = NULL;
 242         size_t size;
 243
 244         *dn = smb_xstrdup(lp_ldap_admin_dn());
 245
 246         if (asprintf(&key, "%s/%s", SECRETS_LDAP_BIND_PW, *dn) < 0) {
 247                 SAFE_FREE(*dn);
 248                 DEBUG(0, ("fetch_ldap_pw: asprintf failed!\n"));
 249         }
 250
 251         *pw=secrets_fetch(key, &size);
 252         SAFE_FREE(key);
 253
 254         if (!size) {
 255                 /* Upgrade 2.2 style entry */
 256                 char *p;
 257                 char* old_style_key = strdup(*dn);
 258                 char *data;
 259                 fstring old_style_pw;
 260
 261                 if (!old_style_key) {
 262                         DEBUG(0, ("fetch_ldap_pw: strdup failed!\n"));
 263                         return False;
 264                 }
 265
 266                 for (p=old_style_key; *p; p++)
 267                         if (*p == ',') *p = '/';
 268
 269                 data=secrets_fetch(old_style_key, &size);
 270                 if (!size && size < sizeof(old_style_pw)) {
 271                         DEBUG(0,("fetch_ldap_pw: neither ldap secret retrieved!\n"));
 272                         SAFE_FREE(old_style_key);
 273                         SAFE_FREE(*dn);
 274                         return False;
 275                 }
 276
 277                 size = MIN(size, sizeof(fstring)-1);
 278                 strncpy(old_style_pw, data, size);
 279                 old_style_pw[size] = 0;
 280
 281                 SAFE_FREE(data);
 282
 283                 if (!secrets_store_ldap_pw(*dn, old_style_pw)) {
 284                         DEBUG(0,("fetch_ldap_pw: ldap secret could not be upgraded!\n"));
 285                         SAFE_FREE(old_style_key);
 286                         SAFE_FREE(*dn);
 287                         return False;
 288                 }
 289                 if (!secrets_delete(old_style_key)) {
 290                         DEBUG(0,("fetch_ldap_pw: old ldap secret could not be deleted!\n"));
 291                 }
 292
 293                 SAFE_FREE(old_style_key);
 294
 295                 *pw = smb_xstrdup(old_style_pw);
 296         }
 297
 298         return True;
 299 }
 300
 301 /*******************************************************************
 302  Search an attribute and return the first value found.
 303 ******************************************************************/
 304
 305  BOOL smbldap_get_single_attribute (LDAP * ldap_struct, LDAPMessage * entry,
 306                                     const char *attribute, char *value,
 307                                     int max_len)
 308 {
 309         char **values;
 310
 311         if ( !attribute )
 312                 return False;
 313
 314         value[0] = '\0';
 315
 316         if ((values = ldap_get_values (ldap_struct, entry, attribute)) == NULL) {
 317                 DEBUG (10, ("smbldap_get_single_attribute: [%s] = [<does not exist>]\n", attribute));
 318
 319                 return False;
 320         }
 321
 322         if (convert_string(CH_UTF8, CH_UNIX,values[0], -1, value, max_len, False) == (size_t)-1) {
 323                 DEBUG(1, ("smbldap_get_single_attribute: string conversion of [%s] = [%s] failed!\n",
 324                           attribute, values[0]));
 325                 ldap_value_free(values);
 326                 return False;
 327         }
 328
 329         ldap_value_free(values);
 330 #ifdef DEBUG_PASSWORDS
 331         DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n", attribute, value));
 332 #endif
 333         return True;
 334 }
 335
 336  BOOL smbldap_get_single_pstring (LDAP * ldap_struct, LDAPMessage * entry,
 337                                   const char *attribute, pstring value)
 338 {
 339         return smbldap_get_single_attribute(ldap_struct, entry,
 340                                             attribute, value,
 341                                             sizeof(pstring));
 342 }
 343
 344 /************************************************************************
 345  Routine to manage the LDAPMod structure array
 346  manage memory used by the array, by each struct, and values
 347  ***********************************************************************/
 348
 349  void smbldap_set_mod (LDAPMod *** modlist, int modop, const char *attribute, const char *value)
 350 {
 351         LDAPMod **mods;
 352         int i;
 353         int j;
 354
 355         mods = *modlist;
 356
 357         /* sanity checks on the mod values */
 358
 359         if (attribute == NULL || *attribute == '\0')
 360                 return;
 361 #if 0   /* commented out after discussion with abartlet.  Do not reenable.
 362            left here so other so re-add similar code   --jerry */
 363         if (value == NULL || *value == '\0')
 364                 return;
 365 #endif
 366
 367         if (mods == NULL)
 368         {
 369                 mods = (LDAPMod **) malloc(sizeof(LDAPMod *));
 370                 if (mods == NULL)
 371                 {
 372                         DEBUG(0, ("make_a_mod: out of memory!\n"));
 373                         return;
 374                 }
 375                 mods[0] = NULL;
 376         }
 377
 378         for (i = 0; mods[i] != NULL; ++i) {
 379                 if (mods[i]->mod_op == modop && strequal(mods[i]->mod_type, attribute))
 380                         break;
 381         }
 382
 383         if (mods[i] == NULL)
 384         {
 385                 mods = (LDAPMod **) Realloc (mods, (i + 2) * sizeof (LDAPMod *));
 386                 if (mods == NULL)
 387                 {
 388                         DEBUG(0, ("make_a_mod: out of memory!\n"));
 389                         return;
 390                 }
 391                 mods[i] = (LDAPMod *) malloc(sizeof(LDAPMod));
 392                 if (mods[i] == NULL)
 393                 {
 394                         DEBUG(0, ("make_a_mod: out of memory!\n"));
 395                         return;
 396                 }
 397                 mods[i]->mod_op = modop;
 398                 mods[i]->mod_values = NULL;
 399                 mods[i]->mod_type = strdup(attribute);
 400                 mods[i + 1] = NULL;
 401         }
 402
 403         if (value != NULL)
 404         {
 405                 char *utf8_value = NULL;
 406
 407                 j = 0;
 408                 if (mods[i]->mod_values != NULL) {
 409                         for (; mods[i]->mod_values[j] != NULL; j++);
 410                 }
 411                 mods[i]->mod_values = (char **)Realloc(mods[i]->mod_values,
 412                                                (j + 2) * sizeof (char *));
 413
 414                 if (mods[i]->mod_values == NULL) {
 415                         DEBUG (0, ("make_a_mod: Memory allocation failure!\n"));
 416                         return;
 417                 }
 418
 419                 if (push_utf8_allocate(&utf8_value, value) == (size_t)-1) {
 420                         DEBUG (0, ("make_a_mod: String conversion failure!\n"));
 421                         return;
 422                 }
 423
 424                 mods[i]->mod_values[j] = utf8_value;
 425
 426                 mods[i]->mod_values[j + 1] = NULL;
 427         }
 428         *modlist = mods;
 429 }
 430
 431 /**********************************************************************
 432   Set attribute to newval in LDAP, regardless of what value the
 433   attribute had in LDAP before.
 434 *********************************************************************/
 435
 436  void smbldap_make_mod(LDAP *ldap_struct, LDAPMessage *existing,
 437                       LDAPMod ***mods,
 438                       const char *attribute, const char *newval)
 439 {
 440         char oldval[2048]; /* current largest allowed value is mungeddial */
 441         BOOL existed;
 442
 443         if (existing != NULL) {
 444                 existed = smbldap_get_single_attribute(ldap_struct, existing, attribute, oldval, sizeof(oldval));
 445         } else {
 446                 existed = False;
 447                 *oldval = '\0';
 448         }
 449
 450         /* all of our string attributes are case insensitive */
 451
 452         if (existed && newval && (StrCaseCmp(oldval, newval) == 0)) {
 453
 454                 /* Believe it or not, but LDAP will deny a delete and
 455                    an add at the same time if the values are the
 456                    same... */
 457                 return;
 458         }
 459
 460         if (existed) {
 461                 /* There has been no value before, so don't delete it.
 462                  * Here's a possible race: We might end up with
 463                  * duplicate attributes */
 464                 /* By deleting exactly the value we found in the entry this
 465                  * should be race-free in the sense that the LDAP-Server will
 466                  * deny the complete operation if somebody changed the
 467                  * attribute behind our back. */
 468                 /* This will also allow modifying single valued attributes
 469                  * in Novell NDS. In NDS you have to first remove attribute and then
 470                  * you could add new value */
 471
 472                 smbldap_set_mod(mods, LDAP_MOD_DELETE, attribute, oldval);
 473         }
 474
 475         /* Regardless of the real operation (add or modify)
 476            we add the new value here. We rely on deleting
 477            the old value, should it exist. */
 478
 479         if ((newval != NULL) && (strlen(newval) > 0)) {
 480                 smbldap_set_mod(mods, LDAP_MOD_ADD, attribute, newval);
 481         }
 482 }
 483
 484 /**********************************************************************
 485  Some varients of the LDAP rebind code do not pass in the third 'arg'
 486  pointer to a void*, so we try and work around it by assuming that the
 487  value of the 'LDAP *' pointer is the same as the one we had passed in
 488  **********************************************************************/
 489
 490 struct smbldap_state_lookup {
 491         LDAP *ld;
 492         struct smbldap_state *smbldap_state;
 493         struct smbldap_state_lookup *prev, *next;
 494 };
 495
 496 static struct smbldap_state_lookup *smbldap_state_lookup_list;
 497
 498 static struct smbldap_state *smbldap_find_state(LDAP *ld)
 499 {
 500         struct smbldap_state_lookup *t;
 501
 502         for (t = smbldap_state_lookup_list; t; t = t->next) {
 503                 if (t->ld == ld) {
 504                         return t->smbldap_state;
 505                 }
 506         }
 507         return NULL;
 508 }
 509
 510 static void smbldap_delete_state(struct smbldap_state *smbldap_state)
 511 {
 512         struct smbldap_state_lookup *t;
 513
 514         for (t = smbldap_state_lookup_list; t; t = t->next) {
 515                 if (t->smbldap_state == smbldap_state) {
 516                         DLIST_REMOVE(smbldap_state_lookup_list, t);
 517                         SAFE_FREE(t);
 518                         return;
 519                 }
 520         }
 521 }
 522
 523 static void smbldap_store_state(LDAP *ld, struct smbldap_state *smbldap_state)
 524 {
 525         struct smbldap_state *tmp_ldap_state;
 526         struct smbldap_state_lookup *t;
 527         struct smbldap_state_lookup *tmp;
 528
 529         if ((tmp_ldap_state = smbldap_find_state(ld))) {
 530                 SMB_ASSERT(tmp_ldap_state == smbldap_state);
 531                 return;
 532         }
 533
 534         t = smb_xmalloc(sizeof(*t));
 535         ZERO_STRUCTP(t);
 536
 537         DLIST_ADD_END(smbldap_state_lookup_list, t, tmp);
 538         t->ld = ld;
 539         t->smbldap_state = smbldap_state;
 540 }
 541
 542 /*******************************************************************
 543  open a connection to the ldap server.
 544 ******************************************************************/
 545 static int smbldap_open_connection (struct smbldap_state *ldap_state)
 546
 547 {
 548         int rc = LDAP_SUCCESS;
 549         int version;
 550         BOOL ldap_v3 = False;
 551         LDAP **ldap_struct = &ldap_state->ldap_struct;
 552
 553 #ifdef HAVE_LDAP_INITIALIZE
 554         DEBUG(10, ("smbldap_open_connection: %s\n", ldap_state->uri));
 555
 556         if ((rc = ldap_initialize(ldap_struct, ldap_state->uri)) != LDAP_SUCCESS) {
 557                 DEBUG(0, ("ldap_initialize: %s\n", ldap_err2string(rc)));
 558                 return rc;
 559         }
 560 #else
 561
 562         /* Parse the string manually */
 563
 564         {
 565                 int port = 0;
 566                 fstring protocol;
 567                 fstring host;
 568                 const char *p = ldap_state->uri;
 569                 SMB_ASSERT(sizeof(protocol)>10 && sizeof(host)>254);
 570
 571                 /* skip leading "URL:" (if any) */
 572                 if ( strnequal( p, "URL:", 4 ) ) {
 573                         p += 4;
 574                 }
 575
 576                 sscanf(p, "%10[^:]://%254[^:/]:%d", protocol, host, &port);
 577
 578                 if (port == 0) {
 579                         if (strequal(protocol, "ldap")) {
 580                                 port = LDAP_PORT;
 581                         } else if (strequal(protocol, "ldaps")) {
 582                                 port = LDAPS_PORT;
 583                         } else {
 584                                 DEBUG(0, ("unrecognised protocol (%s)!\n", protocol));
 585                         }
 586                 }
 587
 588                 if ((*ldap_struct = ldap_init(host, port)) == NULL)     {
 589                         DEBUG(0, ("ldap_init failed !\n"));
 590                         return LDAP_OPERATIONS_ERROR;
 591                 }
 592
 593                 if (strequal(protocol, "ldaps")) {
 594 #ifdef LDAP_OPT_X_TLS
 595                         int tls = LDAP_OPT_X_TLS_HARD;
 596                         if (ldap_set_option (*ldap_struct, LDAP_OPT_X_TLS, &tls) != LDAP_SUCCESS)
 597                         {
 598                                 DEBUG(0, ("Failed to setup a TLS session\n"));
 599                         }
 600
 601                         DEBUG(3,("LDAPS option set...!\n"));
 602 #else
 603                         DEBUG(0,("smbldap_open_connection: Secure connection not supported by LDAP client libraries!\n"));
 604                         return LDAP_OPERATIONS_ERROR;
 605 #endif
 606                 }
 607         }
 608 #endif
 609
 610         /* Store the LDAP pointer in a lookup list */
 611
 612         smbldap_store_state(*ldap_struct, ldap_state);
 613
 614         /* Upgrade to LDAPv3 if possible */
 615
 616         if (ldap_get_option(*ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version) == LDAP_OPT_SUCCESS)
 617         {
 618                 if (version != LDAP_VERSION3)
 619                 {
 620                         version = LDAP_VERSION3;
 621                         if (ldap_set_option (*ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version) == LDAP_OPT_SUCCESS) {
 622                                 ldap_v3 = True;
 623                         }
 624                 } else {
 625                         ldap_v3 = True;
 626                 }
 627         }
 628
 629         if (lp_ldap_ssl() == LDAP_SSL_START_TLS) {
 630 #ifdef LDAP_OPT_X_TLS
 631                 if (ldap_v3) {
 632                         if ((rc = ldap_start_tls_s (*ldap_struct, NULL, NULL)) != LDAP_SUCCESS)
 633                         {
 634                                 DEBUG(0,("Failed to issue the StartTLS instruction: %s\n",
 635                                          ldap_err2string(rc)));
 636                                 return rc;
 637                         }
 638                         DEBUG (3, ("StartTLS issued: using a TLS connection\n"));
 639                 } else {
 640
 641                         DEBUG(0, ("Need LDAPv3 for Start TLS\n"));
 642                         return LDAP_OPERATIONS_ERROR;
 643                 }
 644 #else
 645                 DEBUG(0,("smbldap_open_connection: StartTLS not supported by LDAP client libraries!\n"));
 646                 return LDAP_OPERATIONS_ERROR;
 647 #endif
 648         }
 649
 650         DEBUG(2, ("smbldap_open_connection: connection opened\n"));
 651         return rc;
 652 }
 653
 654
 655 /*******************************************************************
 656  a rebind function for authenticated referrals
 657  This version takes a void* that we can shove useful stuff in :-)
 658 ******************************************************************/
 659 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
 660 #else
 661 static int rebindproc_with_state  (LDAP * ld, char **whop, char **credp,
 662                                    int *methodp, int freeit, void *arg)
 663 {
 664         struct smbldap_state *ldap_state = arg;
 665
 666         /** @TODO Should we be doing something to check what servers we rebind to?
 667             Could we get a referral to a machine that we don't want to give our
 668             username and password to? */
 669
 670         if (freeit) {
 671                 SAFE_FREE(*whop);
 672                 memset(*credp, '\0', strlen(*credp));
 673                 SAFE_FREE(*credp);
 674         } else {
 675                 DEBUG(5,("rebind_proc_with_state: Rebinding as \"%s\"\n",
 676                           ldap_state->bind_dn));
 677
 678                 *whop = strdup(ldap_state->bind_dn);
 679                 if (!*whop) {
 680                         return LDAP_NO_MEMORY;
 681                 }
 682                 *credp = strdup(ldap_state->bind_secret);
 683                 if (!*credp) {
 684                         SAFE_FREE(*whop);
 685                         return LDAP_NO_MEMORY;
 686                 }
 687                 *methodp = LDAP_AUTH_SIMPLE;
 688         }
 689
 690         gettimeofday(&(ldap_state->last_rebind),NULL);
 691
 692         return 0;
 693 }
 694 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 695
 696 /*******************************************************************
 697  a rebind function for authenticated referrals
 698  This version takes a void* that we can shove useful stuff in :-)
 699  and actually does the connection.
 700 ******************************************************************/
 701 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
 702 static int rebindproc_connect_with_state (LDAP *ldap_struct,
 703                                           LDAP_CONST char *url,
 704                                           ber_tag_t request,
 705                                           ber_int_t msgid, void *arg)
 706 {
 707         struct smbldap_state *ldap_state = arg;
 708         int rc;
 709         DEBUG(5,("rebindproc_connect_with_state: Rebinding as \"%s\"\n",
 710                  ldap_state->bind_dn));
 711
 712         /** @TODO Should we be doing something to check what servers we rebind to?
 713             Could we get a referral to a machine that we don't want to give our
 714             username and password to? */
 715
 716         rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
 717
 718         gettimeofday(&(ldap_state->last_rebind),NULL);
 719
 720         return rc;
 721 }
 722 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 723
 724 /*******************************************************************
 725  Add a rebind function for authenticated referrals
 726 ******************************************************************/
 727 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
 728 #else
 729 # if LDAP_SET_REBIND_PROC_ARGS == 2
 730 static int rebindproc (LDAP *ldap_struct, char **whop, char **credp,
 731                        int *method, int freeit )
 732 {
 733         struct smbldap_state *ldap_state = smbldap_find_state(ldap_struct);
 734
 735         return rebindproc_with_state(ldap_struct, whop, credp,
 736                                      method, freeit, ldap_state);
 737
 738 }
 739 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
 740 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 741
 742 /*******************************************************************
 743  a rebind function for authenticated referrals
 744  this also does the connection, but no void*.
 745 ******************************************************************/
 746 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
 747 # if LDAP_SET_REBIND_PROC_ARGS == 2
 748 static int rebindproc_connect (LDAP * ld, LDAP_CONST char *url, int request,
 749                                ber_int_t msgid)
 750 {
 751         struct smbldap_state *ldap_state = smbldap_find_state(ld);
 752
 753         return rebindproc_connect_with_state(ld, url, (ber_tag_t)request, msgid,
 754                                              ldap_state);
 755 }
 756 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
 757 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 758
 759 /*******************************************************************
 760  connect to the ldap server under system privilege.
 761 ******************************************************************/
 762 static int smbldap_connect_system(struct smbldap_state *ldap_state, LDAP * ldap_struct)
 763 {
 764         int rc;
 765         char *ldap_dn;
 766         char *ldap_secret;
 767
 768         /* get the password */
 769         if (!fetch_ldap_pw(&ldap_dn, &ldap_secret))
 770         {
 771                 DEBUG(0, ("ldap_connect_system: Failed to retrieve password from secrets.tdb\n"));
 772                 return LDAP_INVALID_CREDENTIALS;
 773         }
 774
 775         ldap_state->bind_dn = ldap_dn;
 776         ldap_state->bind_secret = ldap_secret;
 777
 778         /* removed the sasl_bind_s "EXTERNAL" stuff, as my testsuite
 779            (OpenLDAP) doesnt' seem to support it */
 780
 781         DEBUG(10,("ldap_connect_system: Binding to ldap server %s as \"%s\"\n",
 782                   ldap_state->uri, ldap_dn));
 783
 784 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
 785 # if LDAP_SET_REBIND_PROC_ARGS == 2
 786         ldap_set_rebind_proc(ldap_struct, &rebindproc_connect);
 787 # endif
 788 # if LDAP_SET_REBIND_PROC_ARGS == 3
 789         ldap_set_rebind_proc(ldap_struct, &rebindproc_connect_with_state, (void *)ldap_state);
 790 # endif
 791 #else /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 792 # if LDAP_SET_REBIND_PROC_ARGS == 2
 793         ldap_set_rebind_proc(ldap_struct, &rebindproc);
 794 # endif
 795 # if LDAP_SET_REBIND_PROC_ARGS == 3
 796         ldap_set_rebind_proc(ldap_struct, &rebindproc_with_state, (void *)ldap_state);
 797 # endif
 798 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 799
 800         rc = ldap_simple_bind_s(ldap_struct, ldap_dn, ldap_secret);
 801
 802         if (rc != LDAP_SUCCESS) {
 803                 char *ld_error = NULL;
 804                 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
 805                                 &ld_error);
 806                 DEBUG(ldap_state->num_failures ? 2 : 0,
 807                       ("failed to bind to server with dn= %s Error: %s\n\t%s\n",
 808                                ldap_dn ? ldap_dn : "(unknown)", ldap_err2string(rc),
 809                                ld_error ? ld_error : "(unknown)"));
 810                 SAFE_FREE(ld_error);
 811                 ldap_state->num_failures++;
 812                 return rc;
 813         }
 814
 815         ldap_state->num_failures = 0;
 816
 817         DEBUG(3, ("ldap_connect_system: succesful connection to the LDAP server\n"));
 818         return rc;
 819 }
 820
 821 /**********************************************************************
 822 Connect to LDAP server (called before every ldap operation)
 823 *********************************************************************/
 824 static int smbldap_open(struct smbldap_state *ldap_state)
 825 {
 826         int rc;
 827         SMB_ASSERT(ldap_state);
 828
 829 #ifndef NO_LDAP_SECURITY
 830         if (geteuid() != 0) {
 831                 DEBUG(0, ("smbldap_open: cannot access LDAP when not root..\n"));
 832                 return  LDAP_INSUFFICIENT_ACCESS;
 833         }
 834 #endif
 835
 836         if ((ldap_state->ldap_struct != NULL) && ((ldap_state->last_ping + SMBLDAP_DONT_PING_TIME) < time(NULL))) {
 837                 struct sockaddr_un addr;
 838                 socklen_t len = sizeof(addr);
 839                 int sd;
 840                 if (ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_DESC, &sd) == 0 &&
 841                     getpeername(sd, (struct sockaddr *) &addr, &len) < 0) {
 842                         /* the other end has died. reopen. */
 843                         ldap_unbind_ext(ldap_state->ldap_struct, NULL, NULL);
 844                         ldap_state->ldap_struct = NULL;
 845                         ldap_state->last_ping = (time_t)0;
 846                 } else {
 847                         ldap_state->last_ping = time(NULL);
 848                 }
 849         }
 850
 851         if (ldap_state->ldap_struct != NULL) {
 852                 DEBUG(11,("smbldap_open: already connected to the LDAP server\n"));
 853                 return LDAP_SUCCESS;
 854         }
 855
 856         if ((rc = smbldap_open_connection(ldap_state))) {
 857                 return rc;
 858         }
 859
 860         if ((rc = smbldap_connect_system(ldap_state, ldap_state->ldap_struct))) {
 861                 ldap_unbind_ext(ldap_state->ldap_struct, NULL, NULL);
 862                 ldap_state->ldap_struct = NULL;
 863                 return rc;
 864         }
 865
 866
 867         ldap_state->last_ping = time(NULL);
 868         DEBUG(4,("The LDAP server is succesful connected\n"));
 869
 870         return LDAP_SUCCESS;
 871 }
 872
 873 /**********************************************************************
 874 Disconnect from LDAP server
 875 *********************************************************************/
 876 static NTSTATUS smbldap_close(struct smbldap_state *ldap_state)
 877 {
 878         if (!ldap_state)
 879                 return NT_STATUS_INVALID_PARAMETER;
 880
 881         if (ldap_state->ldap_struct != NULL) {
 882                 ldap_unbind_ext(ldap_state->ldap_struct, NULL, NULL);
 883                 ldap_state->ldap_struct = NULL;
 884         }
 885
 886         smbldap_delete_state(ldap_state);
 887
 888         DEBUG(5,("The connection to the LDAP server was closed\n"));
 889         /* maybe free the results here --metze */
 890
 891
 892
 893         return NT_STATUS_OK;
 894 }
 895
 896 int smbldap_retry_open(struct smbldap_state *ldap_state, int *attempts)
 897 {
 898         int rc;
 899
 900         SMB_ASSERT(ldap_state && attempts);
 901
 902         if (*attempts != 0) {
 903                 unsigned int sleep_time;
 904                 uint8 rand_byte;
 905
 906                 /* Sleep for a random timeout */
 907                 rand_byte = (char)(sys_random());
 908
 909                 sleep_time = (((*attempts)*(*attempts))/2)*rand_byte*2;
 910                 /* we retry after (0.5, 1, 2, 3, 4.5, 6) seconds
 911                    on average.
 912                  */
 913                 DEBUG(3, ("Sleeping for %u milliseconds before reconnecting\n",
 914                           sleep_time));
 915                 smb_msleep(sleep_time);
 916         }
 917         (*attempts)++;
 918
 919         if ((rc = smbldap_open(ldap_state))) {
 920                 DEBUG(1,("Connection to LDAP Server failed for the %d try!\n",*attempts));
 921                 return rc;
 922         }
 923
 924         return LDAP_SUCCESS;
 925 }
 926
 927
 928 /*********************************************************************
 929  ********************************************************************/
 930
 931 int smbldap_search(struct smbldap_state *ldap_state,
 932                    const char *base, int scope, const char *filter,
 933                    char *attrs[], int attrsonly,
 934                    LDAPMessage **res)
 935 {
 936         int             rc = LDAP_SERVER_DOWN;
 937         int             attempts = 0;
 938         char           *utf8_filter;
 939
 940         SMB_ASSERT(ldap_state);
 941
 942         DEBUG(5,("smbldap_search: base => [%s], filter => [%s], scope => [%d]\n",
 943                 base, filter, scope));
 944
 945         if (ldap_state->last_rebind.tv_sec > 0) {
 946                 struct timeval  tval;
 947                 int             tdiff = 0;
 948                 int             sleep_time = 0;
 949
 950                 ZERO_STRUCT(tval);
 951
 952                 gettimeofday(&tval,NULL);
 953
 954                 tdiff = 1000000 *(tval.tv_sec - ldap_state->last_rebind.tv_sec) +
 955                         (tval.tv_usec - ldap_state->last_rebind.tv_usec);
 956
 957                 sleep_time = ((1000*lp_ldap_replication_sleep())-tdiff)/1000;
 958
 959                 if (sleep_time > 0) {
 960                         /* we wait for the LDAP replication */
 961                         DEBUG(5,("smbldap_search: waiting %d milliseconds for LDAP replication.\n",sleep_time));
 962                         smb_msleep(sleep_time);
 963                         DEBUG(5,("smbldap_search: go on!\n"));
 964                         ZERO_STRUCT(ldap_state->last_rebind);
 965                 }
 966         }
 967
 968         if (push_utf8_allocate(&utf8_filter, filter) == (size_t)-1) {
 969                 return LDAP_NO_MEMORY;
 970         }
 971
 972         while ((rc == LDAP_SERVER_DOWN) && (attempts < SMBLDAP_NUM_RETRIES)) {
 973
 974                 if ((rc = smbldap_retry_open(ldap_state,&attempts)) != LDAP_SUCCESS)
 975                         continue;
 976
 977                 rc = ldap_search_s(ldap_state->ldap_struct, base, scope,
 978                                    utf8_filter, attrs, attrsonly, res);
 979         }
 980
 981         if (rc == LDAP_SERVER_DOWN) {
 982                 DEBUG(0,("%s: LDAP server is down!\n",FUNCTION_MACRO));
 983                 smbldap_close(ldap_state);
 984         }
 985
 986         ldap_state->last_use = time(NULL);
 987
 988         SAFE_FREE(utf8_filter);
 989         return rc;
 990 }
 991
 992 int smbldap_modify(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
 993 {
 994         int             rc = LDAP_SERVER_DOWN;
 995         int             attempts = 0;
 996         char           *utf8_dn;
 997
 998         SMB_ASSERT(ldap_state);
 999
1000         DEBUG(5,("smbldap_modify: dn => [%s]\n", dn ));
1001
1002         if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1003                 return LDAP_NO_MEMORY;
1004         }
1005
1006         while ((rc == LDAP_SERVER_DOWN) && (attempts < SMBLDAP_NUM_RETRIES)) {
1007
1008                 if ((rc = smbldap_retry_open(ldap_state,&attempts)) != LDAP_SUCCESS)
1009                         continue;
1010
1011                 rc = ldap_modify_s(ldap_state->ldap_struct, utf8_dn, attrs);
1012         }
1013
1014         if (rc == LDAP_SERVER_DOWN) {
1015                 DEBUG(0,("%s: LDAP server is down!\n",FUNCTION_MACRO));
1016                 smbldap_close(ldap_state);
1017         }
1018
1019         ldap_state->last_use = time(NULL);
1020
1021         SAFE_FREE(utf8_dn);
1022         return rc;
1023 }
1024
1025 int smbldap_add(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1026 {
1027         int             rc = LDAP_SERVER_DOWN;
1028         int             attempts = 0;
1029         char           *utf8_dn;
1030
1031         SMB_ASSERT(ldap_state);
1032
1033         DEBUG(5,("smbldap_add: dn => [%s]\n", dn ));
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_add_s(ldap_state->ldap_struct, utf8_dn, attrs);
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_delete(struct smbldap_state *ldap_state, const char *dn)
1059 {
1060         int             rc = LDAP_SERVER_DOWN;
1061         int             attempts = 0;
1062         char           *utf8_dn;
1063
1064         SMB_ASSERT(ldap_state);
1065
1066         DEBUG(5,("smbldap_delete: dn => [%s]\n", dn ));
1067
1068         if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1069                 return LDAP_NO_MEMORY;
1070         }
1071
1072         while ((rc == LDAP_SERVER_DOWN) && (attempts < SMBLDAP_NUM_RETRIES)) {
1073
1074                 if ((rc = smbldap_retry_open(ldap_state,&attempts)) != LDAP_SUCCESS)
1075                         continue;
1076
1077                 rc = ldap_delete_s(ldap_state->ldap_struct, utf8_dn);
1078         }
1079
1080         if (rc == LDAP_SERVER_DOWN) {
1081                 DEBUG(0,("%s: LDAP server is down!\n",FUNCTION_MACRO));
1082                 smbldap_close(ldap_state);
1083         }
1084
1085         ldap_state->last_use = time(NULL);
1086
1087         SAFE_FREE(utf8_dn);
1088         return rc;
1089 }
1090
1091 int smbldap_extended_operation(struct smbldap_state *ldap_state,
1092                                LDAP_CONST char *reqoid, struct berval *reqdata,
1093                                LDAPControl **serverctrls, LDAPControl **clientctrls,
1094                                char **retoidp, struct berval **retdatap)
1095 {
1096         int             rc = LDAP_SERVER_DOWN;
1097         int             attempts = 0;
1098
1099         if (!ldap_state)
1100                 return (-1);
1101
1102         while ((rc == LDAP_SERVER_DOWN) && (attempts < SMBLDAP_NUM_RETRIES)) {
1103
1104                 if ((rc = smbldap_retry_open(ldap_state,&attempts)) != LDAP_SUCCESS)
1105                         continue;
1106
1107                 rc = ldap_extended_operation_s(ldap_state->ldap_struct, reqoid, reqdata,
1108                                                serverctrls, clientctrls, retoidp, retdatap);
1109         }
1110
1111         if (rc == LDAP_SERVER_DOWN) {
1112                 DEBUG(0,("%s: LDAP server is down!\n",FUNCTION_MACRO));
1113                 smbldap_close(ldap_state);
1114         }
1115
1116         ldap_state->last_use = time(NULL);
1117
1118         return rc;
1119 }
1120
1121 /*******************************************************************
1122  run the search by name.
1123 ******************************************************************/
1124 int smbldap_search_suffix (struct smbldap_state *ldap_state, const char *filter,
1125                            char **search_attr, LDAPMessage ** result)
1126 {
1127         int scope = LDAP_SCOPE_SUBTREE;
1128         int rc;
1129
1130         rc = smbldap_search(ldap_state, lp_ldap_suffix(), scope, filter, search_attr, 0, result);
1131
1132         if (rc != LDAP_SUCCESS) {
1133                 char *ld_error = NULL;
1134                 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
1135                                 &ld_error);
1136                 DEBUG(0,("smbldap_search_suffix: Problem during the LDAP search: %s (%s)\n",
1137                         ld_error?ld_error:"(unknown)", ldap_err2string (rc)));
1138                 SAFE_FREE(ld_error);
1139         }
1140
1141         return rc;
1142 }
1143
1144 static void smbldap_idle_fn(void **data, time_t *interval, time_t now)
1145 {
1146         struct smbldap_state *state = (struct smbldap_state *)(*data);
1147
1148         if (state->ldap_struct == NULL) {
1149                 DEBUG(10,("ldap connection not connected...\n"));
1150                 return;
1151         }
1152
1153         if ((state->last_use+SMBLDAP_IDLE_TIME) > now) {
1154                 DEBUG(10,("ldap connection not idle...\n"));
1155                 return;
1156         }
1157
1158         DEBUG(7,("ldap connection idle...closing connection\n"));
1159         smbldap_close(state);
1160 }
1161
1162 /**********************************************************************
1163  Housekeeping
1164  *********************************************************************/
1165
1166 void smbldap_free_struct(struct smbldap_state **ldap_state)
1167 {
1168         smbldap_close(*ldap_state);
1169
1170         if ((*ldap_state)->bind_secret) {
1171                 memset((*ldap_state)->bind_secret, '\0', strlen((*ldap_state)->bind_secret));
1172         }
1173
1174         SAFE_FREE((*ldap_state)->bind_dn);
1175         SAFE_FREE((*ldap_state)->bind_secret);
1176
1177         smb_unregister_idle_event((*ldap_state)->event_id);
1178
1179         *ldap_state = NULL;
1180
1181         /* No need to free any further, as it is talloc()ed */
1182 }
1183
1184
1185 /**********************************************************************
1186  Intitalise the 'general' ldap structures, on which ldap operations may be conducted
1187  *********************************************************************/
1188
1189 NTSTATUS smbldap_init(TALLOC_CTX *mem_ctx, const char *location, struct smbldap_state **smbldap_state)
1190 {
1191         *smbldap_state = talloc_zero(mem_ctx, sizeof(**smbldap_state));
1192         if (!*smbldap_state) {
1193                 DEBUG(0, ("talloc() failed for ldapsam private_data!\n"));
1194                 return NT_STATUS_NO_MEMORY;
1195         }
1196
1197         if (location) {
1198                 (*smbldap_state)->uri = talloc_strdup(mem_ctx, location);
1199         } else {
1200                 (*smbldap_state)->uri = "ldap://localhost";
1201         }
1202
1203         (*smbldap_state)->event_id =
1204                 smb_register_idle_event(smbldap_idle_fn, (void *)(*smbldap_state),
1205                                         SMBLDAP_IDLE_TIME);
1206
1207         if ((*smbldap_state)->event_id == SMB_EVENT_ID_INVALID) {
1208                 DEBUG(0,("Failed to register LDAP idle event!\n"));
1209                 return NT_STATUS_INVALID_HANDLE;
1210         }
1211
1212         return NT_STATUS_OK;
1213 }
1214
1215 /*******************************************************************
1216  Return a copy of the DN for a LDAPMessage. Convert from utf8 to CH_UNIX.
1217 ********************************************************************/
1218
1219 char *smbldap_get_dn(LDAP *ld, LDAPMessage *entry)
1220 {
1221         char *utf8_dn, *unix_dn;
1222
1223         utf8_dn = ldap_get_dn(ld, entry);
1224         if (!utf8_dn) {
1225                 DEBUG (5, ("smbldap_get_dn: ldap_get_dn failed\n"));
1226                 return NULL;
1227         }
1228         if (pull_utf8_allocate(&unix_dn, utf8_dn) == (size_t)-1) {
1229                 DEBUG (0, ("smbldap_get_dn: String conversion failure utf8 [%s]\n", utf8_dn));
1230                 return NULL;
1231         }
1232         ldap_memfree(utf8_dn);
1233         return unix_dn;
1234 }