source3/lib/smbldap.c

   1 /*
   2    Unix SMB/CIFS implementation.
   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,         "homeDrive"     },
  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_MOD_TIMESTAMP,      "modifyTimestamp"       },
  70         { LDAP_ATTR_LIST_END,           NULL            }
  71 };
  72
  73 ATTRIB_MAP_ENTRY attrib_map_to_delete_v22[] = {
  74         { LDAP_ATTR_PWD_LAST_SET,       "pwdLastSet"    },
  75         { LDAP_ATTR_PWD_CAN_CHANGE,     "pwdCanChange"  },
  76         { LDAP_ATTR_PWD_MUST_CHANGE,    "pwdMustChange" },
  77         { LDAP_ATTR_LOGON_TIME,         "logonTime"     },
  78         { LDAP_ATTR_LOGOFF_TIME,        "logoffTime"    },
  79         { LDAP_ATTR_KICKOFF_TIME,       "kickoffTime"   },
  80         { LDAP_ATTR_DISPLAY_NAME,       "displayName"   },
  81         { LDAP_ATTR_HOME_PATH,          "smbHome"       },
  82         { LDAP_ATTR_HOME_DRIVE,         "homeDrives"    },
  83         { LDAP_ATTR_LOGON_SCRIPT,       "scriptPath"    },
  84         { LDAP_ATTR_PROFILE_PATH,       "profilePath"   },
  85         { LDAP_ATTR_USER_WKS,           "userWorkstations"},
  86         { LDAP_ATTR_USER_RID,           "rid"           },
  87         { LDAP_ATTR_PRIMARY_GROUP_RID,  "primaryGroupID"},
  88         { LDAP_ATTR_LMPW,               "lmPassword"    },
  89         { LDAP_ATTR_NTPW,               "ntPassword"    },
  90         { LDAP_ATTR_DOMAIN,             "domain"        },
  91         { LDAP_ATTR_ACB_INFO,           "acctFlags"     },
  92         { LDAP_ATTR_LIST_END,           NULL            }
  93 };
  94
  95 /* attributes used by Samba 3.0's sambaSamAccount */
  96
  97 ATTRIB_MAP_ENTRY attrib_map_v30[] = {
  98         { LDAP_ATTR_UID,                "uid"                   },
  99         { LDAP_ATTR_UIDNUMBER,          LDAP_ATTRIBUTE_UIDNUMBER},
 100         { LDAP_ATTR_GIDNUMBER,          LDAP_ATTRIBUTE_GIDNUMBER},
 101         { LDAP_ATTR_UNIX_HOME,          "homeDirectory"         },
 102         { LDAP_ATTR_PWD_LAST_SET,       "sambaPwdLastSet"       },
 103         { LDAP_ATTR_PWD_CAN_CHANGE,     "sambaPwdCanChange"     },
 104         { LDAP_ATTR_PWD_MUST_CHANGE,    "sambaPwdMustChange"    },
 105         { LDAP_ATTR_LOGON_TIME,         "sambaLogonTime"        },
 106         { LDAP_ATTR_LOGOFF_TIME,        "sambaLogoffTime"       },
 107         { LDAP_ATTR_KICKOFF_TIME,       "sambaKickoffTime"      },
 108         { LDAP_ATTR_CN,                 "cn"                    },
 109         { LDAP_ATTR_DISPLAY_NAME,       "displayName"           },
 110         { LDAP_ATTR_HOME_DRIVE,         "sambaHomeDrive"        },
 111         { LDAP_ATTR_HOME_PATH,          "sambaHomePath"         },
 112         { LDAP_ATTR_LOGON_SCRIPT,       "sambaLogonScript"      },
 113         { LDAP_ATTR_PROFILE_PATH,       "sambaProfilePath"      },
 114         { LDAP_ATTR_DESC,               "description"           },
 115         { LDAP_ATTR_USER_WKS,           "sambaUserWorkstations" },
 116         { LDAP_ATTR_USER_SID,           LDAP_ATTRIBUTE_SID      },
 117         { LDAP_ATTR_PRIMARY_GROUP_SID,  "sambaPrimaryGroupSID"  },
 118         { LDAP_ATTR_LMPW,               "sambaLMPassword"       },
 119         { LDAP_ATTR_NTPW,               "sambaNTPassword"       },
 120         { LDAP_ATTR_DOMAIN,             "sambaDomainName"       },
 121         { LDAP_ATTR_OBJCLASS,           "objectClass"           },
 122         { LDAP_ATTR_ACB_INFO,           "sambaAcctFlags"        },
 123         { LDAP_ATTR_MUNGED_DIAL,        "sambaMungedDial"       },
 124         { LDAP_ATTR_BAD_PASSWORD_COUNT, "sambaBadPasswordCount" },
 125         { LDAP_ATTR_BAD_PASSWORD_TIME,  "sambaBadPasswordTime"  },
 126         { LDAP_ATTR_PWD_HISTORY,        "sambaPasswordHistory"  },
 127         { LDAP_ATTR_MOD_TIMESTAMP,      "modifyTimestamp"       },
 128         { LDAP_ATTR_LOGON_HOURS,        "sambaLogonHours"       },
 129         { LDAP_ATTR_LIST_END,           NULL                    }
 130 };
 131
 132 ATTRIB_MAP_ENTRY attrib_map_to_delete_v30[] = {
 133         { LDAP_ATTR_PWD_LAST_SET,       "sambaPwdLastSet"       },
 134         { LDAP_ATTR_PWD_CAN_CHANGE,     "sambaPwdCanChange"     },
 135         { LDAP_ATTR_PWD_MUST_CHANGE,    "sambaPwdMustChange"    },
 136         { LDAP_ATTR_LOGON_TIME,         "sambaLogonTime"        },
 137         { LDAP_ATTR_LOGOFF_TIME,        "sambaLogoffTime"       },
 138         { LDAP_ATTR_KICKOFF_TIME,       "sambaKickoffTime"      },
 139         { LDAP_ATTR_HOME_DRIVE,         "sambaHomeDrive"        },
 140         { LDAP_ATTR_HOME_PATH,          "sambaHomePath"         },
 141         { LDAP_ATTR_LOGON_SCRIPT,       "sambaLogonScript"      },
 142         { LDAP_ATTR_PROFILE_PATH,       "sambaProfilePath"      },
 143         { LDAP_ATTR_USER_WKS,           "sambaUserWorkstations" },
 144         { LDAP_ATTR_USER_SID,           LDAP_ATTRIBUTE_SID      },
 145         { LDAP_ATTR_PRIMARY_GROUP_SID,  "sambaPrimaryGroupSID"  },
 146         { LDAP_ATTR_LMPW,               "sambaLMPassword"       },
 147         { LDAP_ATTR_NTPW,               "sambaNTPassword"       },
 148         { LDAP_ATTR_DOMAIN,             "sambaDomainName"       },
 149         { LDAP_ATTR_ACB_INFO,           "sambaAcctFlags"        },
 150         { LDAP_ATTR_MUNGED_DIAL,        "sambaMungedDial"       },
 151         { LDAP_ATTR_BAD_PASSWORD_COUNT, "sambaBadPasswordCount" },
 152         { LDAP_ATTR_BAD_PASSWORD_TIME,  "sambaBadPasswordTime"  },
 153         { LDAP_ATTR_PWD_HISTORY,        "sambaPasswordHistory"  },
 154         { LDAP_ATTR_LOGON_HOURS,        "sambaLogonHours"       },
 155         { LDAP_ATTR_LIST_END,           NULL                    }
 156 };
 157
 158 /* attributes used for allocating RIDs */
 159
 160 ATTRIB_MAP_ENTRY dominfo_attr_list[] = {
 161         { LDAP_ATTR_DOMAIN,             "sambaDomainName"       },
 162         { LDAP_ATTR_NEXT_RID,           "sambaNextRid"          },
 163         { LDAP_ATTR_NEXT_USERRID,       "sambaNextUserRid"      },
 164         { LDAP_ATTR_NEXT_GROUPRID,      "sambaNextGroupRid"     },
 165         { LDAP_ATTR_DOM_SID,            LDAP_ATTRIBUTE_SID      },
 166         { LDAP_ATTR_ALGORITHMIC_RID_BASE,"sambaAlgorithmicRidBase"},
 167         { LDAP_ATTR_OBJCLASS,           "objectClass"           },
 168         { LDAP_ATTR_LIST_END,           NULL                    },
 169 };
 170
 171 /* Samba 3.0 group mapping attributes */
 172
 173 ATTRIB_MAP_ENTRY groupmap_attr_list[] = {
 174         { LDAP_ATTR_GIDNUMBER,          LDAP_ATTRIBUTE_GIDNUMBER},
 175         { LDAP_ATTR_GROUP_SID,          LDAP_ATTRIBUTE_SID      },
 176         { LDAP_ATTR_GROUP_TYPE,         "sambaGroupType"        },
 177         { LDAP_ATTR_SID_LIST,           "sambaSIDList"          },
 178         { LDAP_ATTR_DESC,               "description"           },
 179         { LDAP_ATTR_DISPLAY_NAME,       "displayName"           },
 180         { LDAP_ATTR_CN,                 "cn"                    },
 181         { LDAP_ATTR_OBJCLASS,           "objectClass"           },
 182         { LDAP_ATTR_LIST_END,           NULL                    }
 183 };
 184
 185 ATTRIB_MAP_ENTRY groupmap_attr_list_to_delete[] = {
 186         { LDAP_ATTR_GROUP_SID,          LDAP_ATTRIBUTE_SID      },
 187         { LDAP_ATTR_GROUP_TYPE,         "sambaGroupType"        },
 188         { LDAP_ATTR_DESC,               "description"           },
 189         { LDAP_ATTR_DISPLAY_NAME,       "displayName"           },
 190         { LDAP_ATTR_SID_LIST,           "sambaSIDList"          },
 191         { LDAP_ATTR_LIST_END,           NULL                    }
 192 };
 193
 194 /* idmap_ldap sambaUnixIdPool */
 195
 196 ATTRIB_MAP_ENTRY idpool_attr_list[] = {
 197         { LDAP_ATTR_UIDNUMBER,          LDAP_ATTRIBUTE_UIDNUMBER},
 198         { LDAP_ATTR_GIDNUMBER,          LDAP_ATTRIBUTE_GIDNUMBER},
 199         { LDAP_ATTR_OBJCLASS,           "objectClass"           },
 200         { LDAP_ATTR_LIST_END,           NULL                    }
 201 };
 202
 203 ATTRIB_MAP_ENTRY sidmap_attr_list[] = {
 204         { LDAP_ATTR_SID,                LDAP_ATTRIBUTE_SID      },
 205         { LDAP_ATTR_UIDNUMBER,          LDAP_ATTRIBUTE_UIDNUMBER},
 206         { LDAP_ATTR_GIDNUMBER,          LDAP_ATTRIBUTE_GIDNUMBER},
 207         { LDAP_ATTR_OBJCLASS,           "objectClass"           },
 208         { LDAP_ATTR_LIST_END,           NULL                    }
 209 };
 210
 211 /**********************************************************************
 212  perform a simple table lookup and return the attribute name
 213  **********************************************************************/
 214
 215  const char* get_attr_key2string( ATTRIB_MAP_ENTRY table[], int key )
 216 {
 217         int i = 0;
 218
 219         while ( table[i].attrib != LDAP_ATTR_LIST_END ) {
 220                 if ( table[i].attrib == key )
 221                         return table[i].name;
 222                 i++;
 223         }
 224
 225         return NULL;
 226 }
 227
 228
 229 /**********************************************************************
 230  Return the list of attribute names from a mapping table
 231  **********************************************************************/
 232
 233  const char** get_attr_list( ATTRIB_MAP_ENTRY table[] )
 234 {
 235         const char **names;
 236         int i = 0;
 237
 238         while ( table[i].attrib != LDAP_ATTR_LIST_END )
 239                 i++;
 240         i++;
 241
 242         names = SMB_MALLOC_ARRAY( const char*, i );
 243         if ( !names ) {
 244                 DEBUG(0,("get_attr_list: out of memory\n"));
 245                 return NULL;
 246         }
 247
 248         i = 0;
 249         while ( table[i].attrib != LDAP_ATTR_LIST_END ) {
 250                 names[i] = SMB_STRDUP( table[i].name );
 251                 i++;
 252         }
 253         names[i] = NULL;
 254
 255         return names;
 256 }
 257
 258 /*********************************************************************
 259  Cleanup
 260  ********************************************************************/
 261
 262  void free_attr_list( const char **list )
 263 {
 264         int i = 0;
 265
 266         if ( !list )
 267                 return;
 268
 269         while ( list[i] ) {
 270                 SAFE_FREE( list[i] );
 271                 i+=1;
 272         }
 273
 274         SAFE_FREE( list );
 275 }
 276
 277 /*******************************************************************
 278  Search an attribute and return the first value found.
 279 ******************************************************************/
 280
 281  BOOL smbldap_get_single_attribute (LDAP * ldap_struct, LDAPMessage * entry,
 282                                     const char *attribute, char *value,
 283                                     int max_len)
 284 {
 285         char **values;
 286
 287         if ( !attribute )
 288                 return False;
 289
 290         value[0] = '\0';
 291
 292         if ((values = ldap_get_values (ldap_struct, entry, attribute)) == NULL) {
 293                 DEBUG (10, ("smbldap_get_single_attribute: [%s] = [<does not exist>]\n", attribute));
 294
 295                 return False;
 296         }
 297
 298         if (convert_string(CH_UTF8, CH_UNIX,values[0], -1, value, max_len, False) == (size_t)-1) {
 299                 DEBUG(1, ("smbldap_get_single_attribute: string conversion of [%s] = [%s] failed!\n",
 300                           attribute, values[0]));
 301                 ldap_value_free(values);
 302                 return False;
 303         }
 304
 305         ldap_value_free(values);
 306 #ifdef DEBUG_PASSWORDS
 307         DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n", attribute, value));
 308 #endif
 309         return True;
 310 }
 311
 312  BOOL smbldap_get_single_pstring (LDAP * ldap_struct, LDAPMessage * entry,
 313                                   const char *attribute, pstring value)
 314 {
 315         return smbldap_get_single_attribute(ldap_struct, entry,
 316                                             attribute, value,
 317                                             sizeof(pstring));
 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         }
 338
 339 #if 0   /* commented out after discussion with abartlet.  Do not reenable.
 340            left here so other do not re-add similar code   --jerry */
 341         if (value == NULL || *value == '\0')
 342                 return;
 343 #endif
 344
 345         if (mods == NULL) {
 346                 mods = SMB_MALLOC_P(LDAPMod *);
 347                 if (mods == NULL) {
 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                 mods = SMB_REALLOC_ARRAY (mods, LDAPMod *, i + 2);
 361                 if (mods == NULL) {
 362                         DEBUG(0, ("make_a_mod: out of memory!\n"));
 363                         return;
 364                 }
 365                 mods[i] = SMB_MALLOC_P(LDAPMod);
 366                 if (mods[i] == NULL) {
 367                         DEBUG(0, ("make_a_mod: out of memory!\n"));
 368                         return;
 369                 }
 370                 mods[i]->mod_op = modop;
 371                 mods[i]->mod_values = NULL;
 372                 mods[i]->mod_type = SMB_STRDUP(attribute);
 373                 mods[i + 1] = NULL;
 374         }
 375
 376         if (value != NULL) {
 377                 char *utf8_value = NULL;
 378
 379                 j = 0;
 380                 if (mods[i]->mod_values != NULL) {
 381                         for (; mods[i]->mod_values[j] != NULL; j++);
 382                 }
 383                 mods[i]->mod_values = SMB_REALLOC_ARRAY(mods[i]->mod_values, char *, j + 2);
 384
 385                 if (mods[i]->mod_values == NULL) {
 386                         DEBUG (0, ("make_a_mod: Memory allocation failure!\n"));
 387                         return;
 388                 }
 389
 390                 if (push_utf8_allocate(&utf8_value, value) == (size_t)-1) {
 391                         DEBUG (0, ("make_a_mod: String conversion failure!\n"));
 392                         return;
 393                 }
 394
 395                 mods[i]->mod_values[j] = utf8_value;
 396
 397                 mods[i]->mod_values[j + 1] = NULL;
 398         }
 399         *modlist = mods;
 400 }
 401
 402 /**********************************************************************
 403   Set attribute to newval in LDAP, regardless of what value the
 404   attribute had in LDAP before.
 405 *********************************************************************/
 406
 407  void smbldap_make_mod(LDAP *ldap_struct, LDAPMessage *existing,
 408                       LDAPMod ***mods,
 409                       const char *attribute, const char *newval)
 410 {
 411         char oldval[2048]; /* current largest allowed value is mungeddial */
 412         BOOL existed;
 413
 414         if (attribute == NULL) {
 415                 /* This can actually happen for ldapsam_compat where we for
 416                  * example don't have a password history */
 417                 return;
 418         }
 419
 420         if (existing != NULL) {
 421                 existed = smbldap_get_single_attribute(ldap_struct, existing, attribute, oldval, sizeof(oldval));
 422         } else {
 423                 existed = False;
 424                 *oldval = '\0';
 425         }
 426
 427         /* all of our string attributes are case insensitive */
 428
 429         if (existed && newval && (StrCaseCmp(oldval, newval) == 0)) {
 430
 431                 /* Believe it or not, but LDAP will deny a delete and
 432                    an add at the same time if the values are the
 433                    same... */
 434                 DEBUG(10,("smbldap_make_mod: attribute |%s| not changed.\n", attribute));
 435                 return;
 436         }
 437
 438         if (existed) {
 439                 /* There has been no value before, so don't delete it.
 440                  * Here's a possible race: We might end up with
 441                  * duplicate attributes */
 442                 /* By deleting exactly the value we found in the entry this
 443                  * should be race-free in the sense that the LDAP-Server will
 444                  * deny the complete operation if somebody changed the
 445                  * attribute behind our back. */
 446                 /* This will also allow modifying single valued attributes
 447                  * in Novell NDS. In NDS you have to first remove attribute and then
 448                  * you could add new value */
 449
 450                 DEBUG(10,("smbldap_make_mod: deleting attribute |%s| values |%s|\n", attribute, oldval));
 451                 smbldap_set_mod(mods, LDAP_MOD_DELETE, attribute, oldval);
 452         }
 453
 454         /* Regardless of the real operation (add or modify)
 455            we add the new value here. We rely on deleting
 456            the old value, should it exist. */
 457
 458         if ((newval != NULL) && (strlen(newval) > 0)) {
 459                 DEBUG(10,("smbldap_make_mod: adding attribute |%s| value |%s|\n", attribute, newval));
 460                 smbldap_set_mod(mods, LDAP_MOD_ADD, attribute, newval);
 461         }
 462 }
 463
 464 /**********************************************************************
 465  Some varients of the LDAP rebind code do not pass in the third 'arg'
 466  pointer to a void*, so we try and work around it by assuming that the
 467  value of the 'LDAP *' pointer is the same as the one we had passed in
 468  **********************************************************************/
 469
 470 struct smbldap_state_lookup {
 471         LDAP *ld;
 472         struct smbldap_state *smbldap_state;
 473         struct smbldap_state_lookup *prev, *next;
 474 };
 475
 476 static struct smbldap_state_lookup *smbldap_state_lookup_list;
 477
 478 static struct smbldap_state *smbldap_find_state(LDAP *ld)
 479 {
 480         struct smbldap_state_lookup *t;
 481
 482         for (t = smbldap_state_lookup_list; t; t = t->next) {
 483                 if (t->ld == ld) {
 484                         return t->smbldap_state;
 485                 }
 486         }
 487         return NULL;
 488 }
 489
 490 static void smbldap_delete_state(struct smbldap_state *smbldap_state)
 491 {
 492         struct smbldap_state_lookup *t;
 493
 494         for (t = smbldap_state_lookup_list; t; t = t->next) {
 495                 if (t->smbldap_state == smbldap_state) {
 496                         DLIST_REMOVE(smbldap_state_lookup_list, t);
 497                         SAFE_FREE(t);
 498                         return;
 499                 }
 500         }
 501 }
 502
 503 static void smbldap_store_state(LDAP *ld, struct smbldap_state *smbldap_state)
 504 {
 505         struct smbldap_state *tmp_ldap_state;
 506         struct smbldap_state_lookup *t;
 507         struct smbldap_state_lookup *tmp;
 508
 509         if ((tmp_ldap_state = smbldap_find_state(ld))) {
 510                 SMB_ASSERT(tmp_ldap_state == smbldap_state);
 511                 return;
 512         }
 513
 514         t = SMB_XMALLOC_P(struct smbldap_state_lookup);
 515         ZERO_STRUCTP(t);
 516
 517         DLIST_ADD_END(smbldap_state_lookup_list, t, tmp);
 518         t->ld = ld;
 519         t->smbldap_state = smbldap_state;
 520 }
 521
 522 /*******************************************************************
 523  open a connection to the ldap server.
 524 ******************************************************************/
 525 static int smbldap_open_connection (struct smbldap_state *ldap_state)
 526
 527 {
 528         int rc = LDAP_SUCCESS;
 529         int version;
 530         BOOL ldap_v3 = False;
 531         LDAP **ldap_struct = &ldap_state->ldap_struct;
 532
 533 #ifdef HAVE_LDAP_INITIALIZE
 534         DEBUG(10, ("smbldap_open_connection: %s\n", ldap_state->uri));
 535
 536         if ((rc = ldap_initialize(ldap_struct, ldap_state->uri)) != LDAP_SUCCESS) {
 537                 DEBUG(0, ("ldap_initialize: %s\n", ldap_err2string(rc)));
 538                 return rc;
 539         }
 540 #else
 541
 542         /* Parse the string manually */
 543
 544         {
 545                 int port = 0;
 546                 fstring protocol;
 547                 fstring host;
 548                 const char *p = ldap_state->uri;
 549                 SMB_ASSERT(sizeof(protocol)>10 && sizeof(host)>254);
 550
 551                 /* skip leading "URL:" (if any) */
 552                 if ( strnequal( p, "URL:", 4 ) ) {
 553                         p += 4;
 554                 }
 555
 556                 sscanf(p, "%10[^:]://%254[^:/]:%d", protocol, host, &port);
 557
 558                 if (port == 0) {
 559                         if (strequal(protocol, "ldap")) {
 560                                 port = LDAP_PORT;
 561                         } else if (strequal(protocol, "ldaps")) {
 562                                 port = LDAPS_PORT;
 563                         } else {
 564                                 DEBUG(0, ("unrecognised protocol (%s)!\n", protocol));
 565                         }
 566                 }
 567
 568                 if ((*ldap_struct = ldap_init(host, port)) == NULL)     {
 569                         DEBUG(0, ("ldap_init failed !\n"));
 570                         return LDAP_OPERATIONS_ERROR;
 571                 }
 572
 573                 if (strequal(protocol, "ldaps")) {
 574 #ifdef LDAP_OPT_X_TLS
 575                         int tls = LDAP_OPT_X_TLS_HARD;
 576                         if (ldap_set_option (*ldap_struct, LDAP_OPT_X_TLS, &tls) != LDAP_SUCCESS)
 577                         {
 578                                 DEBUG(0, ("Failed to setup a TLS session\n"));
 579                         }
 580
 581                         DEBUG(3,("LDAPS option set...!\n"));
 582 #else
 583                         DEBUG(0,("smbldap_open_connection: Secure connection not supported by LDAP client libraries!\n"));
 584                         return LDAP_OPERATIONS_ERROR;
 585 #endif
 586                 }
 587         }
 588 #endif
 589
 590         /* Store the LDAP pointer in a lookup list */
 591
 592         smbldap_store_state(*ldap_struct, ldap_state);
 593
 594         /* Upgrade to LDAPv3 if possible */
 595
 596         if (ldap_get_option(*ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version) == LDAP_OPT_SUCCESS)
 597         {
 598                 if (version != LDAP_VERSION3)
 599                 {
 600                         version = LDAP_VERSION3;
 601                         if (ldap_set_option (*ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version) == LDAP_OPT_SUCCESS) {
 602                                 ldap_v3 = True;
 603                         }
 604                 } else {
 605                         ldap_v3 = True;
 606                 }
 607         }
 608
 609         if (lp_ldap_ssl() == LDAP_SSL_START_TLS) {
 610 #ifdef LDAP_OPT_X_TLS
 611                 if (ldap_v3) {
 612                         if ((rc = ldap_start_tls_s (*ldap_struct, NULL, NULL)) != LDAP_SUCCESS)
 613                         {
 614                                 DEBUG(0,("Failed to issue the StartTLS instruction: %s\n",
 615                                          ldap_err2string(rc)));
 616                                 return rc;
 617                         }
 618                         DEBUG (3, ("StartTLS issued: using a TLS connection\n"));
 619                 } else {
 620
 621                         DEBUG(0, ("Need LDAPv3 for Start TLS\n"));
 622                         return LDAP_OPERATIONS_ERROR;
 623                 }
 624 #else
 625                 DEBUG(0,("smbldap_open_connection: StartTLS not supported by LDAP client libraries!\n"));
 626                 return LDAP_OPERATIONS_ERROR;
 627 #endif
 628         }
 629
 630         DEBUG(2, ("smbldap_open_connection: connection opened\n"));
 631         return rc;
 632 }
 633
 634
 635 /*******************************************************************
 636  a rebind function for authenticated referrals
 637  This version takes a void* that we can shove useful stuff in :-)
 638 ******************************************************************/
 639 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
 640 #else
 641 static int rebindproc_with_state  (LDAP * ld, char **whop, char **credp,
 642                                    int *methodp, int freeit, void *arg)
 643 {
 644         struct smbldap_state *ldap_state = arg;
 645
 646         /** @TODO Should we be doing something to check what servers we rebind to?
 647             Could we get a referral to a machine that we don't want to give our
 648             username and password to? */
 649
 650         if (freeit) {
 651                 SAFE_FREE(*whop);
 652                 memset(*credp, '\0', strlen(*credp));
 653                 SAFE_FREE(*credp);
 654         } else {
 655                 DEBUG(5,("rebind_proc_with_state: Rebinding as \"%s\"\n",
 656                           ldap_state->bind_dn));
 657
 658                 *whop = SMB_STRDUP(ldap_state->bind_dn);
 659                 if (!*whop) {
 660                         return LDAP_NO_MEMORY;
 661                 }
 662                 *credp = SMB_STRDUP(ldap_state->bind_secret);
 663                 if (!*credp) {
 664                         SAFE_FREE(*whop);
 665                         return LDAP_NO_MEMORY;
 666                 }
 667                 *methodp = LDAP_AUTH_SIMPLE;
 668         }
 669
 670         GetTimeOfDay(&ldap_state->last_rebind);
 671
 672         return 0;
 673 }
 674 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 675
 676 /*******************************************************************
 677  a rebind function for authenticated referrals
 678  This version takes a void* that we can shove useful stuff in :-)
 679  and actually does the connection.
 680 ******************************************************************/
 681 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
 682 static int rebindproc_connect_with_state (LDAP *ldap_struct,
 683                                           LDAP_CONST char *url,
 684                                           ber_tag_t request,
 685                                           ber_int_t msgid, void *arg)
 686 {
 687         struct smbldap_state *ldap_state = arg;
 688         int rc;
 689         DEBUG(5,("rebindproc_connect_with_state: Rebinding as \"%s\"\n",
 690                  ldap_state->bind_dn));
 691
 692         /** @TODO Should we be doing something to check what servers we rebind to?
 693             Could we get a referral to a machine that we don't want to give our
 694             username and password to? */
 695
 696         rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
 697
 698         GetTimeOfDay(&ldap_state->last_rebind);
 699
 700         return rc;
 701 }
 702 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 703
 704 /*******************************************************************
 705  Add a rebind function for authenticated referrals
 706 ******************************************************************/
 707 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
 708 #else
 709 # if LDAP_SET_REBIND_PROC_ARGS == 2
 710 static int rebindproc (LDAP *ldap_struct, char **whop, char **credp,
 711                        int *method, int freeit )
 712 {
 713         struct smbldap_state *ldap_state = smbldap_find_state(ldap_struct);
 714
 715         return rebindproc_with_state(ldap_struct, whop, credp,
 716                                      method, freeit, ldap_state);
 717
 718 }
 719 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
 720 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 721
 722 /*******************************************************************
 723  a rebind function for authenticated referrals
 724  this also does the connection, but no void*.
 725 ******************************************************************/
 726 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
 727 # if LDAP_SET_REBIND_PROC_ARGS == 2
 728 static int rebindproc_connect (LDAP * ld, LDAP_CONST char *url, int request,
 729                                ber_int_t msgid)
 730 {
 731         struct smbldap_state *ldap_state = smbldap_find_state(ld);
 732
 733         return rebindproc_connect_with_state(ld, url, (ber_tag_t)request, msgid,
 734                                              ldap_state);
 735 }
 736 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
 737 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 738
 739 /*******************************************************************
 740  connect to the ldap server under system privilege.
 741 ******************************************************************/
 742 static int smbldap_connect_system(struct smbldap_state *ldap_state, LDAP * ldap_struct)
 743 {
 744         int rc;
 745         char *ldap_dn;
 746         char *ldap_secret;
 747         int version;
 748
 749         /* get the password */
 750         if (!fetch_ldap_pw(&ldap_dn, &ldap_secret)) {
 751                 DEBUG(0, ("ldap_connect_system: Failed to retrieve password from secrets.tdb\n"));
 752                 return LDAP_INVALID_CREDENTIALS;
 753         }
 754
 755         ldap_state->bind_dn = ldap_dn;
 756         ldap_state->bind_secret = ldap_secret;
 757
 758         /* removed the sasl_bind_s "EXTERNAL" stuff, as my testsuite
 759            (OpenLDAP) doesnt' seem to support it */
 760
 761         DEBUG(10,("ldap_connect_system: Binding to ldap server %s as \"%s\"\n",
 762                   ldap_state->uri, ldap_dn));
 763
 764 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
 765 # if LDAP_SET_REBIND_PROC_ARGS == 2
 766         ldap_set_rebind_proc(ldap_struct, &rebindproc_connect);
 767 # endif
 768 # if LDAP_SET_REBIND_PROC_ARGS == 3
 769         ldap_set_rebind_proc(ldap_struct, &rebindproc_connect_with_state, (void *)ldap_state);
 770 # endif
 771 #else /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 772 # if LDAP_SET_REBIND_PROC_ARGS == 2
 773         ldap_set_rebind_proc(ldap_struct, &rebindproc);
 774 # endif
 775 # if LDAP_SET_REBIND_PROC_ARGS == 3
 776         ldap_set_rebind_proc(ldap_struct, &rebindproc_with_state, (void *)ldap_state);
 777 # endif
 778 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 779
 780         rc = ldap_simple_bind_s(ldap_struct, ldap_dn, ldap_secret);
 781
 782         if (rc != LDAP_SUCCESS) {
 783                 char *ld_error = NULL;
 784                 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
 785                                 &ld_error);
 786                 DEBUG(ldap_state->num_failures ? 2 : 0,
 787                       ("failed to bind to server %s with dn=\"%s\" Error: %s\n\t%s\n",
 788                                ldap_state->uri,
 789                                ldap_dn ? ldap_dn : "(unknown)", ldap_err2string(rc),
 790                                ld_error ? ld_error : "(unknown)"));
 791                 SAFE_FREE(ld_error);
 792                 ldap_state->num_failures++;
 793                 return rc;
 794         }
 795
 796         ldap_state->num_failures = 0;
 797         ldap_state->paged_results = False;
 798
 799         ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
 800
 801         if (smbldap_has_control(ldap_state, ADS_PAGE_CTL_OID) && version == 3) {
 802                 ldap_state->paged_results = True;
 803         }
 804
 805         DEBUG(3, ("ldap_connect_system: succesful connection to the LDAP server\n"));
 806         DEBUGADD(10, ("ldap_connect_system: LDAP server %s support paged results\n",
 807                 ldap_state->paged_results ? "does" : "does not"));
 808         return rc;
 809 }
 810
 811 /**********************************************************************
 812  Connect to LDAP server (called before every ldap operation)
 813 *********************************************************************/
 814 static int smbldap_open(struct smbldap_state *ldap_state)
 815 {
 816         int rc, opt_rc;
 817         BOOL reopen = False;
 818         SMB_ASSERT(ldap_state);
 819
 820 #ifndef NO_LDAP_SECURITY
 821         if (geteuid() != 0) {
 822                 DEBUG(0, ("smbldap_open: cannot access LDAP when not root..\n"));
 823                 return  LDAP_INSUFFICIENT_ACCESS;
 824         }
 825 #endif
 826
 827         if ((ldap_state->ldap_struct != NULL) && ((ldap_state->last_ping + SMBLDAP_DONT_PING_TIME) < time(NULL))) {
 828
 829                 struct sockaddr_un addr;
 830                 socklen_t len = sizeof(addr);
 831                 int sd;
 832
 833                 opt_rc = ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_DESC, &sd);
 834                 if (opt_rc == 0 && (getpeername(sd, (struct sockaddr *) &addr, &len)) < 0 )
 835                         reopen = True;
 836
 837 #ifdef HAVE_UNIXSOCKET
 838                 if (opt_rc == 0 && addr.sun_family == AF_UNIX)
 839                         reopen = True;
 840 #endif
 841                 if (reopen) {
 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         ldap_state->pid = sys_getpid();
 869         DEBUG(4,("The LDAP server is succesfully connected\n"));
 870
 871         return LDAP_SUCCESS;
 872 }
 873
 874 /**********************************************************************
 875 Disconnect from LDAP server
 876 *********************************************************************/
 877 static NTSTATUS smbldap_close(struct smbldap_state *ldap_state)
 878 {
 879         if (!ldap_state)
 880                 return NT_STATUS_INVALID_PARAMETER;
 881
 882         if (ldap_state->ldap_struct != NULL) {
 883                 ldap_unbind_ext(ldap_state->ldap_struct, NULL, NULL);
 884                 ldap_state->ldap_struct = NULL;
 885         }
 886
 887         smbldap_delete_state(ldap_state);
 888
 889         DEBUG(5,("The connection to the LDAP server was closed\n"));
 890         /* maybe free the results here --metze */
 891
 892
 893
 894         return NT_STATUS_OK;
 895 }
 896
 897 static BOOL got_alarm;
 898
 899 static void (*old_handler)(int);
 900
 901 static void gotalarm_sig(int dummy)
 902 {
 903         got_alarm = True;
 904 }
 905
 906 static int another_ldap_try(struct smbldap_state *ldap_state, int *rc,
 907                             int *attempts, time_t endtime)
 908 {
 909         time_t now = time(NULL);
 910         int open_rc = LDAP_SERVER_DOWN;
 911
 912         if (*rc != LDAP_SERVER_DOWN)
 913                 goto no_next;
 914
 915         if (now >= endtime) {
 916                 smbldap_close(ldap_state);
 917                 *rc = LDAP_TIMEOUT;
 918                 goto no_next;
 919         }
 920
 921         if (*attempts == 0) {
 922                 got_alarm = False;
 923                 old_handler = CatchSignal(SIGALRM, gotalarm_sig);
 924                 alarm(endtime - now);
 925
 926                 if (ldap_state->pid != sys_getpid())
 927                         smbldap_close(ldap_state);
 928         }
 929
 930         while (1) {
 931
 932                 if (*attempts != 0)
 933                         smb_msleep(1000);
 934
 935                 *attempts += 1;
 936
 937                 open_rc = smbldap_open(ldap_state);
 938
 939                 if (open_rc == LDAP_SUCCESS) {
 940                         ldap_state->last_use = now;
 941                         return True;
 942                 }
 943
 944                 if (got_alarm) {
 945                         *rc = LDAP_TIMEOUT;
 946                         break;
 947                 }
 948
 949                 if (open_rc != LDAP_SUCCESS) {
 950                         DEBUG(1, ("Connection to LDAP server failed for the "
 951                                   "%d try!\n", *attempts));
 952                 }
 953         }
 954
 955  no_next:
 956         CatchSignal(SIGALRM, old_handler);
 957         alarm(0);
 958         ldap_state->last_use = now;
 959         return False;
 960 }
 961
 962 /*********************************************************************
 963  ********************************************************************/
 964
 965 static int smbldap_search_ext(struct smbldap_state *ldap_state,
 966                               const char *base, int scope, const char *filter,
 967                               const char *attrs[], int attrsonly,
 968                               LDAPControl **sctrls, LDAPControl **cctrls,
 969                               int sizelimit, LDAPMessage **res)
 970 {
 971         int             rc = LDAP_SERVER_DOWN;
 972         int             attempts = 0;
 973         char           *utf8_filter;
 974         time_t          endtime = time(NULL)+lp_ldap_timeout();
 975         struct          timeval timeout;
 976
 977         SMB_ASSERT(ldap_state);
 978
 979         DEBUG(5,("smbldap_search_ext: base => [%s], filter => [%s], "
 980                  "scope => [%d]\n", base, filter, scope));
 981
 982         if (ldap_state->last_rebind.tv_sec > 0) {
 983                 struct timeval  tval;
 984                 SMB_BIG_INT     tdiff = 0;
 985                 int             sleep_time = 0;
 986
 987                 ZERO_STRUCT(tval);
 988                 GetTimeOfDay(&tval);
 989
 990                 tdiff = usec_time_diff(&tval, &ldap_state->last_rebind);
 991                 tdiff /= 1000; /* Convert to milliseconds. */
 992
 993                 sleep_time = lp_ldap_replication_sleep()-(int)tdiff;
 994                 sleep_time = MIN(sleep_time, MAX_LDAP_REPLICATION_SLEEP_TIME);
 995
 996                 if (sleep_time > 0) {
 997                         /* we wait for the LDAP replication */
 998                         DEBUG(5,("smbldap_search_ext: waiting %d milliseconds "
 999                                  "for LDAP replication.\n",sleep_time));
1000                         smb_msleep(sleep_time);
1001                         DEBUG(5,("smbldap_search_ext: go on!\n"));
1002                 }
1003                 ZERO_STRUCT(ldap_state->last_rebind);
1004         }
1005
1006         if (push_utf8_allocate(&utf8_filter, filter) == (size_t)-1) {
1007                 return LDAP_NO_MEMORY;
1008         }
1009
1010         /* Setup timeout for the ldap_search_ext_s call - local and remote. */
1011         timeout.tv_sec = lp_ldap_timeout();
1012         timeout.tv_usec = 0;
1013
1014         /* Setup alarm timeout.... Do we need both of these ? JRA.
1015          * Yes, I think we do need both of these. The server timeout only
1016          * covers the case where the server's operation takes too long. It
1017          * does not cover the case where the request hangs on its way to the
1018          * server. The server side timeout is not strictly necessary, it's
1019          * just a bit more kind to the server. VL. */
1020
1021         got_alarm = 0;
1022         CatchSignal(SIGALRM, SIGNAL_CAST gotalarm_sig);
1023         alarm(lp_ldap_timeout());
1024         /* End setup timeout. */
1025
1026         while (another_ldap_try(ldap_state, &rc, &attempts, endtime))
1027                 rc = ldap_search_ext_s(ldap_state->ldap_struct, base, scope,
1028                                        utf8_filter,
1029                                        CONST_DISCARD(char **, attrs),
1030                                        attrsonly, sctrls, cctrls, &timeout,
1031                                        sizelimit, res);
1032
1033         SAFE_FREE(utf8_filter);
1034
1035         /* Teardown timeout. */
1036         CatchSignal(SIGALRM, SIGNAL_CAST SIG_IGN);
1037         alarm(0);
1038
1039         if (got_alarm != 0)
1040                 return LDAP_TIMELIMIT_EXCEEDED;
1041
1042         return rc;
1043 }
1044
1045 int smbldap_search(struct smbldap_state *ldap_state,
1046                    const char *base, int scope, const char *filter,
1047                    const char *attrs[], int attrsonly,
1048                    LDAPMessage **res)
1049 {
1050         return smbldap_search_ext(ldap_state, base, scope, filter, attrs,
1051                                   attrsonly, NULL, NULL, LDAP_NO_LIMIT, res);
1052 }
1053
1054 int smbldap_search_paged(struct smbldap_state *ldap_state,
1055                          const char *base, int scope, const char *filter,
1056                          const char **attrs, int attrsonly, int pagesize,
1057                          LDAPMessage **res, void **cookie)
1058 {
1059         LDAPControl     pr;
1060         LDAPControl     **rcontrols;
1061         LDAPControl     *controls[2] = { NULL, NULL};
1062         BerElement      *cookie_be = NULL;
1063         struct berval   *cookie_bv = NULL;
1064         int             tmp = 0, i, rc;
1065         BOOL            critical = True;
1066
1067         *res = NULL;
1068
1069         DEBUG(3,("smbldap_search_paged: base => [%s], filter => [%s],"
1070                  "scope => [%d], pagesize => [%d]\n",
1071                  base, filter, scope, pagesize));
1072
1073         cookie_be = ber_alloc_t(LBER_USE_DER);
1074         if (cookie_be == NULL) {
1075                 DEBUG(0,("smbldap_create_page_control: ber_alloc_t returns "
1076                          "NULL\n"));
1077                 return LDAP_NO_MEMORY;
1078         }
1079
1080         /* construct cookie */
1081         if (*cookie != NULL) {
1082                 ber_printf(cookie_be, "{iO}", (ber_int_t) pagesize, *cookie);
1083                 ber_bvfree(*cookie); /* don't need it from last time */
1084                 *cookie = NULL;
1085         } else {
1086                 ber_printf(cookie_be, "{io}", (ber_int_t) pagesize, "", 0);
1087         }
1088         ber_flatten(cookie_be, &cookie_bv);
1089
1090         pr.ldctl_oid = CONST_DISCARD(char *, ADS_PAGE_CTL_OID);
1091         pr.ldctl_iscritical = (char) critical;
1092         pr.ldctl_value.bv_len = cookie_bv->bv_len;
1093         pr.ldctl_value.bv_val = cookie_bv->bv_val;
1094
1095         controls[0] = &pr;
1096         controls[1] = NULL;
1097
1098         rc = smbldap_search_ext(ldap_state, base, scope, filter, attrs,
1099                                  0, controls, NULL, LDAP_NO_LIMIT, res);
1100
1101         ber_free(cookie_be, 1);
1102         ber_bvfree(cookie_bv);
1103
1104         if (rc != 0) {
1105                 DEBUG(3,("smbldap_search_paged: smbldap_search_ext(%s) "
1106                          "failed with [%s]\n", filter, ldap_err2string(rc)));
1107                 goto done;
1108         }
1109
1110         DEBUG(3,("smbldap_search_paged: search was successfull\n"));
1111
1112         rc = ldap_parse_result(ldap_state->ldap_struct, *res, NULL, NULL,
1113                                NULL, NULL, &rcontrols,  0);
1114         if (rc != 0) {
1115                 DEBUG(3,("smbldap_search_paged: ldap_parse_result failed " \
1116                          "with [%s]\n", ldap_err2string(rc)));
1117                 goto done;
1118         }
1119
1120         if (rcontrols == NULL)
1121                 goto done;
1122
1123         for (i=0; rcontrols[i]; i++) {
1124
1125                 if (strcmp(ADS_PAGE_CTL_OID, rcontrols[i]->ldctl_oid) != 0)
1126                         continue;
1127
1128                 cookie_be = ber_init(&rcontrols[i]->ldctl_value);
1129                 ber_scanf(cookie_be,"{iO}", &tmp, &cookie_bv);
1130                 /* the berval is the cookie, but must be freed when it is all
1131                    done */
1132                 if (cookie_bv->bv_len)
1133                         *cookie=ber_bvdup(cookie_bv);
1134                 else
1135                         *cookie=NULL;
1136                 ber_bvfree(cookie_bv);
1137                 ber_free(cookie_be, 1);
1138                 break;
1139         }
1140         ldap_controls_free(rcontrols);
1141 done:
1142         return rc;
1143 }
1144
1145 int smbldap_modify(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1146 {
1147         int             rc = LDAP_SERVER_DOWN;
1148         int             attempts = 0;
1149         char           *utf8_dn;
1150         time_t          endtime = time(NULL)+lp_ldap_timeout();
1151
1152         SMB_ASSERT(ldap_state);
1153
1154         DEBUG(5,("smbldap_modify: dn => [%s]\n", dn ));
1155
1156         if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1157                 return LDAP_NO_MEMORY;
1158         }
1159
1160         while (another_ldap_try(ldap_state, &rc, &attempts, endtime))
1161                 rc = ldap_modify_s(ldap_state->ldap_struct, utf8_dn, attrs);
1162
1163         SAFE_FREE(utf8_dn);
1164         return rc;
1165 }
1166
1167 int smbldap_add(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1168 {
1169         int             rc = LDAP_SERVER_DOWN;
1170         int             attempts = 0;
1171         char           *utf8_dn;
1172         time_t          endtime = time(NULL)+lp_ldap_timeout();
1173
1174         SMB_ASSERT(ldap_state);
1175
1176         DEBUG(5,("smbldap_add: dn => [%s]\n", dn ));
1177
1178         if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1179                 return LDAP_NO_MEMORY;
1180         }
1181
1182         while (another_ldap_try(ldap_state, &rc, &attempts, endtime))
1183                 rc = ldap_add_s(ldap_state->ldap_struct, utf8_dn, attrs);
1184
1185         SAFE_FREE(utf8_dn);
1186         return rc;
1187 }
1188
1189 int smbldap_delete(struct smbldap_state *ldap_state, const char *dn)
1190 {
1191         int             rc = LDAP_SERVER_DOWN;
1192         int             attempts = 0;
1193         char           *utf8_dn;
1194         time_t          endtime = time(NULL)+lp_ldap_timeout();
1195
1196         SMB_ASSERT(ldap_state);
1197
1198         DEBUG(5,("smbldap_delete: dn => [%s]\n", dn ));
1199
1200         if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1201                 return LDAP_NO_MEMORY;
1202         }
1203
1204         while (another_ldap_try(ldap_state, &rc, &attempts, endtime))
1205                 rc = ldap_delete_s(ldap_state->ldap_struct, utf8_dn);
1206
1207         SAFE_FREE(utf8_dn);
1208         return rc;
1209 }
1210
1211 int smbldap_extended_operation(struct smbldap_state *ldap_state,
1212                                LDAP_CONST char *reqoid, struct berval *reqdata,
1213                                LDAPControl **serverctrls, LDAPControl **clientctrls,
1214                                char **retoidp, struct berval **retdatap)
1215 {
1216         int             rc = LDAP_SERVER_DOWN;
1217         int             attempts = 0;
1218         time_t          endtime = time(NULL)+lp_ldap_timeout();
1219
1220         if (!ldap_state)
1221                 return (-1);
1222
1223         while (another_ldap_try(ldap_state, &rc, &attempts, endtime))
1224                 rc = ldap_extended_operation_s(ldap_state->ldap_struct, reqoid,
1225                                                reqdata, serverctrls,
1226                                                clientctrls, retoidp, retdatap);
1227         return rc;
1228 }
1229
1230 /*******************************************************************
1231  run the search by name.
1232 ******************************************************************/
1233 int smbldap_search_suffix (struct smbldap_state *ldap_state, const char *filter,
1234                            const char **search_attr, LDAPMessage ** result)
1235 {
1236         int scope = LDAP_SCOPE_SUBTREE;
1237         int rc;
1238
1239         rc = smbldap_search(ldap_state, lp_ldap_suffix(), scope, filter, search_attr, 0, result);
1240
1241         if (rc != LDAP_SUCCESS) {
1242                 char *ld_error = NULL;
1243                 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
1244                                 &ld_error);
1245                 DEBUG(0,("smbldap_search_suffix: Problem during the LDAP search: %s (%s)\n",
1246                         ld_error?ld_error:"(unknown)", ldap_err2string (rc)));
1247                 SAFE_FREE(ld_error);
1248         }
1249
1250         return rc;
1251 }
1252
1253 static void smbldap_idle_fn(void **data, time_t *interval, time_t now)
1254 {
1255         struct smbldap_state *state = (struct smbldap_state *)(*data);
1256
1257         if (state->ldap_struct == NULL) {
1258                 DEBUG(10,("ldap connection not connected...\n"));
1259                 return;
1260         }
1261
1262         if ((state->last_use+SMBLDAP_IDLE_TIME) > now) {
1263                 DEBUG(10,("ldap connection not idle...\n"));
1264                 return;
1265         }
1266
1267         DEBUG(7,("ldap connection idle...closing connection\n"));
1268         smbldap_close(state);
1269 }
1270
1271 /**********************************************************************
1272  Housekeeping
1273  *********************************************************************/
1274
1275 void smbldap_free_struct(struct smbldap_state **ldap_state)
1276 {
1277         smbldap_close(*ldap_state);
1278
1279         if ((*ldap_state)->bind_secret) {
1280                 memset((*ldap_state)->bind_secret, '\0', strlen((*ldap_state)->bind_secret));
1281         }
1282
1283         SAFE_FREE((*ldap_state)->bind_dn);
1284         SAFE_FREE((*ldap_state)->bind_secret);
1285
1286         smb_unregister_idle_event((*ldap_state)->event_id);
1287
1288         *ldap_state = NULL;
1289
1290         /* No need to free any further, as it is talloc()ed */
1291 }
1292
1293
1294 /**********************************************************************
1295  Intitalise the 'general' ldap structures, on which ldap operations may be conducted
1296  *********************************************************************/
1297
1298 NTSTATUS smbldap_init(TALLOC_CTX *mem_ctx, const char *location, struct smbldap_state **smbldap_state)
1299 {
1300         *smbldap_state = TALLOC_ZERO_P(mem_ctx, struct smbldap_state);
1301         if (!*smbldap_state) {
1302                 DEBUG(0, ("talloc() failed for ldapsam private_data!\n"));
1303                 return NT_STATUS_NO_MEMORY;
1304         }
1305
1306         if (location) {
1307                 (*smbldap_state)->uri = talloc_strdup(mem_ctx, location);
1308         } else {
1309                 (*smbldap_state)->uri = "ldap://localhost";
1310         }
1311
1312         (*smbldap_state)->event_id =
1313                 smb_register_idle_event(smbldap_idle_fn, (void *)(*smbldap_state),
1314                                         SMBLDAP_IDLE_TIME);
1315
1316         if ((*smbldap_state)->event_id == SMB_EVENT_ID_INVALID) {
1317                 DEBUG(0,("Failed to register LDAP idle event!\n"));
1318                 return NT_STATUS_INVALID_HANDLE;
1319         }
1320
1321         return NT_STATUS_OK;
1322 }
1323
1324 /*******************************************************************
1325  Return a copy of the DN for a LDAPMessage. Convert from utf8 to CH_UNIX.
1326 ********************************************************************/
1327
1328 char *smbldap_get_dn(LDAP *ld, LDAPMessage *entry)
1329 {
1330         char *utf8_dn, *unix_dn;
1331
1332         utf8_dn = ldap_get_dn(ld, entry);
1333         if (!utf8_dn) {
1334                 DEBUG (5, ("smbldap_get_dn: ldap_get_dn failed\n"));
1335                 return NULL;
1336         }
1337         if (pull_utf8_allocate(&unix_dn, utf8_dn) == (size_t)-1) {
1338                 DEBUG (0, ("smbldap_get_dn: String conversion failure utf8 [%s]\n", utf8_dn));
1339                 return NULL;
1340         }
1341         ldap_memfree(utf8_dn);
1342         return unix_dn;
1343 }
1344
1345 /*******************************************************************
1346  Check if root-dse has a certain Control or Extension
1347 ********************************************************************/
1348
1349 static BOOL smbldap_check_root_dse(struct smbldap_state *ldap_state, const char **attrs, const char *value)
1350 {
1351         LDAPMessage *msg = NULL;
1352         LDAPMessage *entry = NULL;
1353         char **values = NULL;
1354         int rc, num_result, num_values, i;
1355         BOOL result = False;
1356
1357         if (!attrs[0]) {
1358                 DEBUG(3,("smbldap_check_root_dse: nothing to look for\n"));
1359                 return False;
1360         }
1361
1362         if (!strequal(attrs[0], "supportedExtension") &&
1363             !strequal(attrs[0], "supportedControl") &&
1364             !strequal(attrs[0], "namingContexts")) {
1365                 DEBUG(3,("smbldap_check_root_dse: no idea what to query root-dse for: %s ?\n", attrs[0]));
1366                 return False;
1367         }
1368
1369         rc = ldap_search_s(ldap_state->ldap_struct, "", LDAP_SCOPE_BASE,
1370                            "(objectclass=*)", CONST_DISCARD(char **, attrs), 0 , &msg);
1371
1372         if (rc != LDAP_SUCCESS) {
1373                 DEBUG(3,("smbldap_check_root_dse: Could not search rootDSE\n"));
1374                 return False;
1375         }
1376
1377         num_result = ldap_count_entries(ldap_state->ldap_struct, msg);
1378
1379         if (num_result != 1) {
1380                 DEBUG(3,("smbldap_check_root_dse: Expected one rootDSE, got %d\n", num_result));
1381                 goto done;
1382         }
1383
1384         entry = ldap_first_entry(ldap_state->ldap_struct, msg);
1385
1386         if (entry == NULL) {
1387                 DEBUG(3,("smbldap_check_root_dse: Could not retrieve rootDSE\n"));
1388                 goto done;
1389         }
1390
1391         values = ldap_get_values(ldap_state->ldap_struct, entry, attrs[0]);
1392
1393         if (values == NULL) {
1394                 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not support any %s\n", attrs[0]));
1395                 goto done;
1396         }
1397
1398         num_values = ldap_count_values(values);
1399
1400         if (num_values == 0) {
1401                 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not have any %s\n", attrs[0]));
1402                 goto done;
1403         }
1404
1405         for (i=0; i<num_values; i++) {
1406                 if (strcmp(values[i], value) == 0)
1407                         result = True;
1408         }
1409
1410
1411  done:
1412         if (values != NULL)
1413                 ldap_value_free(values);
1414         if (msg != NULL)
1415                 ldap_msgfree(msg);
1416
1417         return result;
1418
1419 }
1420
1421 /*******************************************************************
1422  Check if LDAP-Server supports a certain Control (OID in string format)
1423 ********************************************************************/
1424
1425 BOOL smbldap_has_control(struct smbldap_state *ldap_state, const char *control)
1426 {
1427         const char *attrs[] = { "supportedControl", NULL };
1428         return smbldap_check_root_dse(ldap_state, attrs, control);
1429 }
1430
1431 /*******************************************************************
1432  Check if LDAP-Server supports a certain Extension (OID in string format)
1433 ********************************************************************/
1434
1435 BOOL smbldap_has_extension(struct smbldap_state *ldap_state, const char *extension)
1436 {
1437         const char *attrs[] = { "supportedExtension", NULL };
1438         return smbldap_check_root_dse(ldap_state, attrs, extension);
1439 }
1440
1441 /*******************************************************************
1442  Check if LDAP-Server holds a given namingContext
1443 ********************************************************************/
1444
1445 BOOL smbldap_has_naming_context(struct smbldap_state *ldap_state, const char *naming_context)
1446 {
1447         const char *attrs[] = { "namingContexts", NULL };
1448         return smbldap_check_root_dse(ldap_state, attrs, naming_context);
1449 }