root/source3/lib/smbldap.c

/* [<][>][^][v][top][bottom][index][help] */

DEFINITIONS

This source file includes following definitions.
  1. get_attr_key2string
  2. get_attr_list
  3. smbldap_get_single_attribute
  4. smbldap_talloc_single_attribute
  5. smbldap_talloc_smallest_attribute
  6. ldapmsg_destructor
  7. talloc_autofree_ldapmsg
  8. ldapmod_destructor
  9. talloc_autofree_ldapmod
  10. smbldap_set_mod
  11. smbldap_make_mod
  12. smbldap_find_state
  13. smbldap_delete_state
  14. smbldap_store_state
  15. smb_ldap_start_tls
  16. smb_ldap_setup_conn
  17. smb_ldap_upgrade_conn
  18. smb_ldap_setup_full_conn
  19. smbldap_open_connection
  20. rebindproc_with_state
  21. rebindproc_connect_with_state
  22. rebindproc
  23. rebindproc_connect
  24. smbldap_connect_system
  25. smbldap_open
  26. smbldap_close
  27. gotalarm_sig
  28. another_ldap_try
  29. smbldap_search_ext
  30. smbldap_search
  31. smbldap_search_paged
  32. smbldap_modify
  33. smbldap_add
  34. smbldap_delete
  35. smbldap_extended_operation
  36. smbldap_search_suffix
  37. smbldap_idle_fn
  38. smbldap_free_struct
  39. smbldap_init
  40. smbldap_talloc_dn
  41. smbldap_check_root_dse
  42. smbldap_has_control
  43. smbldap_has_extension
  44. smbldap_has_naming_context
  45. smbldap_set_creds

   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 3 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, see <http://www.gnu.org/licenses/>.
  22    
  23 */
  24 
  25 #include "includes.h"
  26 #include "smbldap.h"
  27 
  28 #ifndef LDAP_OPT_SUCCESS
  29 #define LDAP_OPT_SUCCESS 0
  30 #endif
  31 
  32 /* Try not to hit the up or down server forever */
  33 
  34 #define SMBLDAP_DONT_PING_TIME 10       /* ping only all 10 seconds */
  35 #define SMBLDAP_NUM_RETRIES 8           /* retry only 8 times */
  36 
  37 #define SMBLDAP_IDLE_TIME 150           /* After 2.5 minutes disconnect */
  38 
  39 
  40 /* attributes used by Samba 2.2 */
  41 
  42 ATTRIB_MAP_ENTRY attrib_map_v22[] = {
  43         { LDAP_ATTR_UID,                "uid"           },
  44         { LDAP_ATTR_UIDNUMBER,          LDAP_ATTRIBUTE_UIDNUMBER},
  45         { LDAP_ATTR_GIDNUMBER,          LDAP_ATTRIBUTE_GIDNUMBER},
  46         { LDAP_ATTR_UNIX_HOME,          "homeDirectory" },
  47         { LDAP_ATTR_PWD_LAST_SET,       "pwdLastSet"    },
  48         { LDAP_ATTR_PWD_CAN_CHANGE,     "pwdCanChange"  },
  49         { LDAP_ATTR_PWD_MUST_CHANGE,    "pwdMustChange" },
  50         { LDAP_ATTR_LOGON_TIME,         "logonTime"     },
  51         { LDAP_ATTR_LOGOFF_TIME,        "logoffTime"    },
  52         { LDAP_ATTR_KICKOFF_TIME,       "kickoffTime"   },
  53         { LDAP_ATTR_CN,                 "cn"            },
  54         { LDAP_ATTR_SN,                 "sn"            },
  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_SN,                 "sn"                    },
 110         { LDAP_ATTR_DISPLAY_NAME,       "displayName"           },
 111         { LDAP_ATTR_HOME_DRIVE,         "sambaHomeDrive"        },
 112         { LDAP_ATTR_HOME_PATH,          "sambaHomePath"         },
 113         { LDAP_ATTR_LOGON_SCRIPT,       "sambaLogonScript"      },
 114         { LDAP_ATTR_PROFILE_PATH,       "sambaProfilePath"      },
 115         { LDAP_ATTR_DESC,               "description"           },
 116         { LDAP_ATTR_USER_WKS,           "sambaUserWorkstations" },
 117         { LDAP_ATTR_USER_SID,           LDAP_ATTRIBUTE_SID      },
 118         { LDAP_ATTR_PRIMARY_GROUP_SID,  "sambaPrimaryGroupSID"  },
 119         { LDAP_ATTR_LMPW,               "sambaLMPassword"       },
 120         { LDAP_ATTR_NTPW,               "sambaNTPassword"       },
 121         { LDAP_ATTR_DOMAIN,             "sambaDomainName"       },
 122         { LDAP_ATTR_OBJCLASS,           "objectClass"           },
 123         { LDAP_ATTR_ACB_INFO,           "sambaAcctFlags"        },
 124         { LDAP_ATTR_MUNGED_DIAL,        "sambaMungedDial"       },
 125         { LDAP_ATTR_BAD_PASSWORD_COUNT, "sambaBadPasswordCount" },
 126         { LDAP_ATTR_BAD_PASSWORD_TIME,  "sambaBadPasswordTime"  },
 127         { LDAP_ATTR_PWD_HISTORY,        "sambaPasswordHistory"  },
 128         { LDAP_ATTR_MOD_TIMESTAMP,      "modifyTimestamp"       },
 129         { LDAP_ATTR_LOGON_HOURS,        "sambaLogonHours"       },
 130         { LDAP_ATTR_LIST_END,           NULL                    }
 131 };
 132 
 133 ATTRIB_MAP_ENTRY attrib_map_to_delete_v30[] = {
 134         { LDAP_ATTR_PWD_LAST_SET,       "sambaPwdLastSet"       },
 135         { LDAP_ATTR_PWD_CAN_CHANGE,     "sambaPwdCanChange"     },
 136         { LDAP_ATTR_PWD_MUST_CHANGE,    "sambaPwdMustChange"    },
 137         { LDAP_ATTR_LOGON_TIME,         "sambaLogonTime"        },
 138         { LDAP_ATTR_LOGOFF_TIME,        "sambaLogoffTime"       },
 139         { LDAP_ATTR_KICKOFF_TIME,       "sambaKickoffTime"      },
 140         { LDAP_ATTR_DISPLAY_NAME,       "displayName"           },
 141         { LDAP_ATTR_HOME_DRIVE,         "sambaHomeDrive"        },
 142         { LDAP_ATTR_HOME_PATH,          "sambaHomePath"         },
 143         { LDAP_ATTR_LOGON_SCRIPT,       "sambaLogonScript"      },
 144         { LDAP_ATTR_PROFILE_PATH,       "sambaProfilePath"      },
 145         { LDAP_ATTR_USER_WKS,           "sambaUserWorkstations" },
 146         { LDAP_ATTR_USER_SID,           LDAP_ATTRIBUTE_SID      },
 147         { LDAP_ATTR_PRIMARY_GROUP_SID,  "sambaPrimaryGroupSID"  },
 148         { LDAP_ATTR_LMPW,               "sambaLMPassword"       },
 149         { LDAP_ATTR_NTPW,               "sambaNTPassword"       },
 150         { LDAP_ATTR_DOMAIN,             "sambaDomainName"       },
 151         { LDAP_ATTR_ACB_INFO,           "sambaAcctFlags"        },
 152         { LDAP_ATTR_MUNGED_DIAL,        "sambaMungedDial"       },
 153         { LDAP_ATTR_BAD_PASSWORD_COUNT, "sambaBadPasswordCount" },
 154         { LDAP_ATTR_BAD_PASSWORD_TIME,  "sambaBadPasswordTime"  },
 155         { LDAP_ATTR_PWD_HISTORY,        "sambaPasswordHistory"  },
 156         { LDAP_ATTR_LOGON_HOURS,        "sambaLogonHours"       },
 157         { LDAP_ATTR_LIST_END,           NULL                    }
 158 };
 159 
 160 /* attributes used for allocating RIDs */
 161 
 162 ATTRIB_MAP_ENTRY dominfo_attr_list[] = {
 163         { LDAP_ATTR_DOMAIN,             "sambaDomainName"       },
 164         { LDAP_ATTR_NEXT_RID,           "sambaNextRid"          },
 165         { LDAP_ATTR_NEXT_USERRID,       "sambaNextUserRid"      },
 166         { LDAP_ATTR_NEXT_GROUPRID,      "sambaNextGroupRid"     },
 167         { LDAP_ATTR_DOM_SID,            LDAP_ATTRIBUTE_SID      },
 168         { LDAP_ATTR_ALGORITHMIC_RID_BASE,"sambaAlgorithmicRidBase"},
 169         { LDAP_ATTR_OBJCLASS,           "objectClass"           },
 170         { LDAP_ATTR_LIST_END,           NULL                    },
 171 };
 172 
 173 /* Samba 3.0 group mapping attributes */
 174 
 175 ATTRIB_MAP_ENTRY groupmap_attr_list[] = {
 176         { LDAP_ATTR_GIDNUMBER,          LDAP_ATTRIBUTE_GIDNUMBER},
 177         { LDAP_ATTR_GROUP_SID,          LDAP_ATTRIBUTE_SID      },
 178         { LDAP_ATTR_GROUP_TYPE,         "sambaGroupType"        },
 179         { LDAP_ATTR_SID_LIST,           "sambaSIDList"          },
 180         { LDAP_ATTR_DESC,               "description"           },
 181         { LDAP_ATTR_DISPLAY_NAME,       "displayName"           },
 182         { LDAP_ATTR_CN,                 "cn"                    },
 183         { LDAP_ATTR_OBJCLASS,           "objectClass"           },
 184         { LDAP_ATTR_LIST_END,           NULL                    }       
 185 };
 186 
 187 ATTRIB_MAP_ENTRY groupmap_attr_list_to_delete[] = {
 188         { LDAP_ATTR_GROUP_SID,          LDAP_ATTRIBUTE_SID      },
 189         { LDAP_ATTR_GROUP_TYPE,         "sambaGroupType"        },
 190         { LDAP_ATTR_DESC,               "description"           },
 191         { LDAP_ATTR_DISPLAY_NAME,       "displayName"           },
 192         { LDAP_ATTR_SID_LIST,           "sambaSIDList"          },
 193         { LDAP_ATTR_LIST_END,           NULL                    }       
 194 };
 195 
 196 /* idmap_ldap sambaUnixIdPool */
 197 
 198 ATTRIB_MAP_ENTRY idpool_attr_list[] = {
 199         { LDAP_ATTR_UIDNUMBER,          LDAP_ATTRIBUTE_UIDNUMBER},
 200         { LDAP_ATTR_GIDNUMBER,          LDAP_ATTRIBUTE_GIDNUMBER},
 201         { LDAP_ATTR_OBJCLASS,           "objectClass"           },
 202         { LDAP_ATTR_LIST_END,           NULL                    }       
 203 };
 204 
 205 ATTRIB_MAP_ENTRY sidmap_attr_list[] = {
 206         { LDAP_ATTR_SID,                LDAP_ATTRIBUTE_SID      },
 207         { LDAP_ATTR_UIDNUMBER,          LDAP_ATTRIBUTE_UIDNUMBER},
 208         { LDAP_ATTR_GIDNUMBER,          LDAP_ATTRIBUTE_GIDNUMBER},
 209         { LDAP_ATTR_OBJCLASS,           "objectClass"           },
 210         { LDAP_ATTR_LIST_END,           NULL                    }       
 211 };
 212 
 213 /**********************************************************************
 214  perform a simple table lookup and return the attribute name 
 215  **********************************************************************/
 216  
 217  const char* get_attr_key2string( ATTRIB_MAP_ENTRY table[], int key )
     /* [<][>][^][v][top][bottom][index][help] */
 218 {
 219         int i = 0;
 220         
 221         while ( table[i].attrib != LDAP_ATTR_LIST_END ) {
 222                 if ( table[i].attrib == key )
 223                         return table[i].name;
 224                 i++;
 225         }
 226         
 227         return NULL;
 228 }
 229 
 230 
 231 /**********************************************************************
 232  Return the list of attribute names from a mapping table
 233  **********************************************************************/
 234 
 235  const char** get_attr_list( TALLOC_CTX *mem_ctx, ATTRIB_MAP_ENTRY table[] )
     /* [<][>][^][v][top][bottom][index][help] */
 236 {
 237         const char **names;
 238         int i = 0;
 239         
 240         while ( table[i].attrib != LDAP_ATTR_LIST_END )
 241                 i++;
 242         i++;
 243 
 244         names = TALLOC_ARRAY( mem_ctx, const char*, i );
 245         if ( !names ) {
 246                 DEBUG(0,("get_attr_list: out of memory\n"));
 247                 return NULL;
 248         }
 249 
 250         i = 0;
 251         while ( table[i].attrib != LDAP_ATTR_LIST_END ) {
 252                 names[i] = talloc_strdup( names, table[i].name );
 253                 i++;
 254         }
 255         names[i] = NULL;
 256         
 257         return names;
 258 }
 259 
 260 /*******************************************************************
 261  Search an attribute and return the first value found.
 262 ******************************************************************/
 263 
 264  bool smbldap_get_single_attribute (LDAP * ldap_struct, LDAPMessage * entry,
     /* [<][>][^][v][top][bottom][index][help] */
 265                                     const char *attribute, char *value,
 266                                     int max_len)
 267 {
 268         char **values;
 269         
 270         if ( !attribute )
 271                 return False;
 272                 
 273         value[0] = '\0';
 274 
 275         if ((values = ldap_get_values (ldap_struct, entry, attribute)) == NULL) {
 276                 DEBUG (10, ("smbldap_get_single_attribute: [%s] = [<does not exist>]\n", attribute));
 277                 
 278                 return False;
 279         }
 280         
 281         if (convert_string(CH_UTF8, CH_UNIX,values[0], -1, value, max_len, False) == (size_t)-1) {
 282                 DEBUG(1, ("smbldap_get_single_attribute: string conversion of [%s] = [%s] failed!\n", 
 283                           attribute, values[0]));
 284                 ldap_value_free(values);
 285                 return False;
 286         }
 287         
 288         ldap_value_free(values);
 289 #ifdef DEBUG_PASSWORDS
 290         DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n", attribute, value));
 291 #endif  
 292         return True;
 293 }
 294 
 295  char * smbldap_talloc_single_attribute(LDAP *ldap_struct, LDAPMessage *entry,
     /* [<][>][^][v][top][bottom][index][help] */
 296                                         const char *attribute,
 297                                         TALLOC_CTX *mem_ctx)
 298 {
 299         char **values;
 300         char *result;
 301         size_t converted_size;
 302 
 303         if (attribute == NULL) {
 304                 return NULL;
 305         }
 306 
 307         values = ldap_get_values(ldap_struct, entry, attribute);
 308 
 309         if (values == NULL) {
 310                 DEBUG(10, ("attribute %s does not exist\n", attribute));
 311                 return NULL;
 312         }
 313 
 314         if (ldap_count_values(values) != 1) {
 315                 DEBUG(10, ("attribute %s has %d values, expected only one\n",
 316                            attribute, ldap_count_values(values)));
 317                 ldap_value_free(values);
 318                 return NULL;
 319         }
 320 
 321         if (!pull_utf8_talloc(mem_ctx, &result, values[0], &converted_size)) {
 322                 DEBUG(10, ("pull_utf8_talloc failed\n"));
 323                 ldap_value_free(values);
 324                 return NULL;
 325         }
 326 
 327         ldap_value_free(values);
 328 
 329 #ifdef DEBUG_PASSWORDS
 330         DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n",
 331                      attribute, result));
 332 #endif  
 333         return result;
 334 }
 335 
 336  char * smbldap_talloc_smallest_attribute(LDAP *ldap_struct, LDAPMessage *entry,
     /* [<][>][^][v][top][bottom][index][help] */
 337                                           const char *attribute,
 338                                           TALLOC_CTX *mem_ctx)
 339 {
 340         char **values;
 341         char *result;
 342         size_t converted_size;
 343         int i, num_values;
 344 
 345         if (attribute == NULL) {
 346                 return NULL;
 347         }
 348 
 349         values = ldap_get_values(ldap_struct, entry, attribute);
 350 
 351         if (values == NULL) {
 352                 DEBUG(10, ("attribute %s does not exist\n", attribute));
 353                 return NULL;
 354         }
 355 
 356         if (!pull_utf8_talloc(mem_ctx, &result, values[0], &converted_size)) {
 357                 DEBUG(10, ("pull_utf8_talloc failed\n"));
 358                 ldap_value_free(values);
 359                 return NULL;
 360         }
 361 
 362         num_values = ldap_count_values(values);
 363 
 364         for (i=1; i<num_values; i++) {
 365                 char *tmp;
 366 
 367                 if (!pull_utf8_talloc(mem_ctx, &tmp, values[i],
 368                                       &converted_size)) {
 369                         DEBUG(10, ("pull_utf8_talloc failed\n"));
 370                         TALLOC_FREE(result);
 371                         ldap_value_free(values);
 372                         return NULL;
 373                 }
 374 
 375                 if (StrCaseCmp(tmp, result) < 0) {
 376                         TALLOC_FREE(result);
 377                         result = tmp;
 378                 } else {
 379                         TALLOC_FREE(tmp);
 380                 }
 381         }
 382 
 383         ldap_value_free(values);
 384 
 385 #ifdef DEBUG_PASSWORDS
 386         DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n",
 387                      attribute, result));
 388 #endif
 389         return result;
 390 }
 391 
 392  static int ldapmsg_destructor(LDAPMessage **result) {
     /* [<][>][^][v][top][bottom][index][help] */
 393         ldap_msgfree(*result);
 394         return 0;
 395 }
 396 
 397  void talloc_autofree_ldapmsg(TALLOC_CTX *mem_ctx, LDAPMessage *result)
     /* [<][>][^][v][top][bottom][index][help] */
 398 {
 399         LDAPMessage **handle;
 400 
 401         if (result == NULL) {
 402                 return;
 403         }
 404 
 405         handle = TALLOC_P(mem_ctx, LDAPMessage *);
 406         SMB_ASSERT(handle != NULL);
 407 
 408         *handle = result;
 409         talloc_set_destructor(handle, ldapmsg_destructor);
 410 }
 411 
 412  static int ldapmod_destructor(LDAPMod ***mod) {
     /* [<][>][^][v][top][bottom][index][help] */
 413         ldap_mods_free(*mod, True);
 414         return 0;
 415 }
 416 
 417  void talloc_autofree_ldapmod(TALLOC_CTX *mem_ctx, LDAPMod **mod)
     /* [<][>][^][v][top][bottom][index][help] */
 418 {
 419         LDAPMod ***handle;
 420 
 421         if (mod == NULL) {
 422                 return;
 423         }
 424 
 425         handle = TALLOC_P(mem_ctx, LDAPMod **);
 426         SMB_ASSERT(handle != NULL);
 427 
 428         *handle = mod;
 429         talloc_set_destructor(handle, ldapmod_destructor);
 430 }
 431 
 432 /************************************************************************
 433  Routine to manage the LDAPMod structure array
 434  manage memory used by the array, by each struct, and values
 435  ***********************************************************************/
 436 
 437  void smbldap_set_mod (LDAPMod *** modlist, int modop, const char *attribute, const char *value)
     /* [<][>][^][v][top][bottom][index][help] */
 438 {
 439         LDAPMod **mods;
 440         int i;
 441         int j;
 442 
 443         mods = *modlist;
 444 
 445         /* sanity checks on the mod values */
 446 
 447         if (attribute == NULL || *attribute == '\0') {
 448                 return; 
 449         }
 450 
 451 #if 0   /* commented out after discussion with abartlet.  Do not reenable.
 452            left here so other do not re-add similar code   --jerry */
 453         if (value == NULL || *value == '\0')
 454                 return;
 455 #endif
 456 
 457         if (mods == NULL) {
 458                 mods = SMB_MALLOC_P(LDAPMod *);
 459                 if (mods == NULL) {
 460                         smb_panic("smbldap_set_mod: out of memory!");
 461                         /* notreached. */
 462                 }
 463                 mods[0] = NULL;
 464         }
 465 
 466         for (i = 0; mods[i] != NULL; ++i) {
 467                 if (mods[i]->mod_op == modop && strequal(mods[i]->mod_type, attribute))
 468                         break;
 469         }
 470 
 471         if (mods[i] == NULL) {
 472                 mods = SMB_REALLOC_ARRAY (mods, LDAPMod *, i + 2);
 473                 if (mods == NULL) {
 474                         smb_panic("smbldap_set_mod: out of memory!");
 475                         /* notreached. */
 476                 }
 477                 mods[i] = SMB_MALLOC_P(LDAPMod);
 478                 if (mods[i] == NULL) {
 479                         smb_panic("smbldap_set_mod: out of memory!");
 480                         /* notreached. */
 481                 }
 482                 mods[i]->mod_op = modop;
 483                 mods[i]->mod_values = NULL;
 484                 mods[i]->mod_type = SMB_STRDUP(attribute);
 485                 mods[i + 1] = NULL;
 486         }
 487 
 488         if (value != NULL) {
 489                 char *utf8_value = NULL;
 490                 size_t converted_size;
 491 
 492                 j = 0;
 493                 if (mods[i]->mod_values != NULL) {
 494                         for (; mods[i]->mod_values[j] != NULL; j++);
 495                 }
 496                 mods[i]->mod_values = SMB_REALLOC_ARRAY(mods[i]->mod_values, char *, j + 2);
 497                                                
 498                 if (mods[i]->mod_values == NULL) {
 499                         smb_panic("smbldap_set_mod: out of memory!");
 500                         /* notreached. */
 501                 }
 502 
 503                 if (!push_utf8_allocate(&utf8_value, value, &converted_size)) {
 504                         smb_panic("smbldap_set_mod: String conversion failure!");
 505                         /* notreached. */
 506                 }
 507 
 508                 mods[i]->mod_values[j] = utf8_value;
 509 
 510                 mods[i]->mod_values[j + 1] = NULL;
 511         }
 512         *modlist = mods;
 513 }
 514 
 515 /**********************************************************************
 516   Set attribute to newval in LDAP, regardless of what value the
 517   attribute had in LDAP before.
 518 *********************************************************************/
 519 
 520  void smbldap_make_mod(LDAP *ldap_struct, LDAPMessage *existing,
     /* [<][>][^][v][top][bottom][index][help] */
 521                       LDAPMod ***mods,
 522                       const char *attribute, const char *newval)
 523 {
 524         char oldval[2048]; /* current largest allowed value is mungeddial */
 525         bool existed;
 526 
 527         if (attribute == NULL) {
 528                 /* This can actually happen for ldapsam_compat where we for
 529                  * example don't have a password history */
 530                 return;
 531         }
 532 
 533         if (existing != NULL) {
 534                 existed = smbldap_get_single_attribute(ldap_struct, existing, attribute, oldval, sizeof(oldval));
 535         } else {
 536                 existed = False;
 537                 *oldval = '\0';
 538         }
 539 
 540         /* all of our string attributes are case insensitive */
 541         
 542         if (existed && newval && (StrCaseCmp(oldval, newval) == 0)) {
 543                 
 544                 /* Believe it or not, but LDAP will deny a delete and
 545                    an add at the same time if the values are the
 546                    same... */
 547                 DEBUG(10,("smbldap_make_mod: attribute |%s| not changed.\n", attribute));
 548                 return;
 549         }
 550 
 551         if (existed) {
 552                 /* There has been no value before, so don't delete it.
 553                  * Here's a possible race: We might end up with
 554                  * duplicate attributes */
 555                 /* By deleting exactly the value we found in the entry this
 556                  * should be race-free in the sense that the LDAP-Server will
 557                  * deny the complete operation if somebody changed the
 558                  * attribute behind our back. */
 559                 /* This will also allow modifying single valued attributes 
 560                  * in Novell NDS. In NDS you have to first remove attribute and then
 561                  * you could add new value */
 562                 
 563                 DEBUG(10,("smbldap_make_mod: deleting attribute |%s| values |%s|\n", attribute, oldval));
 564                 smbldap_set_mod(mods, LDAP_MOD_DELETE, attribute, oldval);
 565         }
 566 
 567         /* Regardless of the real operation (add or modify)
 568            we add the new value here. We rely on deleting
 569            the old value, should it exist. */
 570 
 571         if ((newval != NULL) && (strlen(newval) > 0)) {
 572                 DEBUG(10,("smbldap_make_mod: adding attribute |%s| value |%s|\n", attribute, newval));
 573                 smbldap_set_mod(mods, LDAP_MOD_ADD, attribute, newval);
 574         }
 575 }
 576 
 577 /**********************************************************************
 578  Some varients of the LDAP rebind code do not pass in the third 'arg' 
 579  pointer to a void*, so we try and work around it by assuming that the 
 580  value of the 'LDAP *' pointer is the same as the one we had passed in
 581  **********************************************************************/
 582 
 583 struct smbldap_state_lookup {
 584         LDAP *ld;
 585         struct smbldap_state *smbldap_state;
 586         struct smbldap_state_lookup *prev, *next;
 587 };
 588 
 589 static struct smbldap_state_lookup *smbldap_state_lookup_list;
 590 
 591 static struct smbldap_state *smbldap_find_state(LDAP *ld) 
     /* [<][>][^][v][top][bottom][index][help] */
 592 {
 593         struct smbldap_state_lookup *t;
 594 
 595         for (t = smbldap_state_lookup_list; t; t = t->next) {
 596                 if (t->ld == ld) {
 597                         return t->smbldap_state;
 598                 }
 599         }
 600         return NULL;
 601 }
 602 
 603 static void smbldap_delete_state(struct smbldap_state *smbldap_state) 
     /* [<][>][^][v][top][bottom][index][help] */
 604 {
 605         struct smbldap_state_lookup *t;
 606 
 607         for (t = smbldap_state_lookup_list; t; t = t->next) {
 608                 if (t->smbldap_state == smbldap_state) {
 609                         DLIST_REMOVE(smbldap_state_lookup_list, t);
 610                         SAFE_FREE(t);
 611                         return;
 612                 }
 613         }
 614 }
 615 
 616 static void smbldap_store_state(LDAP *ld, struct smbldap_state *smbldap_state) 
     /* [<][>][^][v][top][bottom][index][help] */
 617 {
 618         struct smbldap_state *tmp_ldap_state;
 619         struct smbldap_state_lookup *t;
 620         
 621         if ((tmp_ldap_state = smbldap_find_state(ld))) {
 622                 SMB_ASSERT(tmp_ldap_state == smbldap_state);
 623                 return;
 624         }
 625 
 626         t = SMB_XMALLOC_P(struct smbldap_state_lookup);
 627         ZERO_STRUCTP(t);
 628         
 629         DLIST_ADD_END(smbldap_state_lookup_list, t, struct smbldap_state_lookup *);
 630         t->ld = ld;
 631         t->smbldap_state = smbldap_state;
 632 }
 633 
 634 /********************************************************************
 635  start TLS on an existing LDAP connection
 636 *******************************************************************/
 637 
 638 int smb_ldap_start_tls(LDAP *ldap_struct, int version)
     /* [<][>][^][v][top][bottom][index][help] */
 639 { 
 640 #ifdef LDAP_OPT_X_TLS
 641         int rc;
 642 #endif
 643         
 644         if (lp_ldap_ssl() != LDAP_SSL_START_TLS) {
 645                 return LDAP_SUCCESS;
 646         }
 647         
 648 #ifdef LDAP_OPT_X_TLS
 649         if (version != LDAP_VERSION3) {
 650                 DEBUG(0, ("Need LDAPv3 for Start TLS\n"));
 651                 return LDAP_OPERATIONS_ERROR;
 652         }
 653 
 654         if ((rc = ldap_start_tls_s (ldap_struct, NULL, NULL)) != LDAP_SUCCESS)  {
 655                 DEBUG(0,("Failed to issue the StartTLS instruction: %s\n",
 656                          ldap_err2string(rc)));
 657                 return rc;
 658         }
 659 
 660         DEBUG (3, ("StartTLS issued: using a TLS connection\n"));
 661         return LDAP_SUCCESS;
 662 #else
 663         DEBUG(0,("StartTLS not supported by LDAP client libraries!\n"));
 664         return LDAP_OPERATIONS_ERROR;
 665 #endif
 666 }
 667 
 668 /********************************************************************
 669  setup a connection to the LDAP server based on a uri
 670 *******************************************************************/
 671 
 672 int smb_ldap_setup_conn(LDAP **ldap_struct, const char *uri)
     /* [<][>][^][v][top][bottom][index][help] */
 673 {
 674         int rc;
 675 
 676         DEBUG(10, ("smb_ldap_setup_connection: %s\n", uri));
 677         
 678 #ifdef HAVE_LDAP_INITIALIZE
 679         
 680         rc = ldap_initialize(ldap_struct, uri);
 681         if (rc) {
 682                 DEBUG(0, ("ldap_initialize: %s\n", ldap_err2string(rc)));
 683         }
 684 
 685         return rc;
 686 #else 
 687 
 688         /* Parse the string manually */
 689 
 690         {
 691                 int port = 0;
 692                 fstring protocol;
 693                 fstring host;
 694                 SMB_ASSERT(sizeof(protocol)>10 && sizeof(host)>254);
 695 
 696 
 697                 /* skip leading "URL:" (if any) */
 698                 if ( strnequal( uri, "URL:", 4 ) ) {
 699                         uri += 4;
 700                 }
 701                 
 702                 sscanf(uri, "%10[^:]://%254[^:/]:%d", protocol, host, &port);
 703                 
 704                 if (port == 0) {
 705                         if (strequal(protocol, "ldap")) {
 706                                 port = LDAP_PORT;
 707                         } else if (strequal(protocol, "ldaps")) {
 708                                 port = LDAPS_PORT;
 709                         } else {
 710                                 DEBUG(0, ("unrecognised protocol (%s)!\n", protocol));
 711                         }
 712                 }
 713                 
 714                 if ((*ldap_struct = ldap_init(host, port)) == NULL)     {
 715                         DEBUG(0, ("ldap_init failed !\n"));
 716                         return LDAP_OPERATIONS_ERROR;
 717                 }
 718                 
 719                 if (strequal(protocol, "ldaps")) {
 720 #ifdef LDAP_OPT_X_TLS
 721                         int tls = LDAP_OPT_X_TLS_HARD;
 722                         if (ldap_set_option (*ldap_struct, LDAP_OPT_X_TLS, &tls) != LDAP_SUCCESS)
 723                         {
 724                                 DEBUG(0, ("Failed to setup a TLS session\n"));
 725                         }
 726                         
 727                         DEBUG(3,("LDAPS option set...!\n"));
 728 #else
 729                         DEBUG(0,("smbldap_open_connection: Secure connection not supported by LDAP client libraries!\n"));
 730                         return LDAP_OPERATIONS_ERROR;
 731 #endif /* LDAP_OPT_X_TLS */
 732                 }
 733         }
 734 #endif /* HAVE_LDAP_INITIALIZE */
 735 
 736 
 737         /* now set connection timeout */
 738 #ifdef LDAP_X_OPT_CONNECT_TIMEOUT /* Netscape */
 739         {
 740                 int ct = lp_ldap_connection_timeout()*1000;
 741                 rc = ldap_set_option(*ldap_struct, LDAP_X_OPT_CONNECT_TIMEOUT, &ct);
 742                 if (rc != LDAP_SUCCESS) {
 743                         DEBUG(0,("Failed to setup an ldap connection timeout %d: %s\n",
 744                                 ct, ldap_err2string(rc)));
 745                 }
 746         }
 747 #elif defined (LDAP_OPT_NETWORK_TIMEOUT) /* OpenLDAP */
 748         {
 749                 struct timeval ct;
 750                 ct.tv_usec = 0;
 751                 ct.tv_sec = lp_ldap_connection_timeout();
 752                 rc = ldap_set_option(*ldap_struct, LDAP_OPT_NETWORK_TIMEOUT, &ct);
 753                 if (rc != LDAP_SUCCESS) {
 754                         DEBUG(0,("Failed to setup an ldap connection timeout %d: %s\n",
 755                                 (int)ct.tv_sec, ldap_err2string(rc)));
 756                 }
 757         }
 758 #endif
 759 
 760         return LDAP_SUCCESS;
 761 }
 762 
 763 /********************************************************************
 764  try to upgrade to Version 3 LDAP if not already, in either case return current
 765  version 
 766  *******************************************************************/
 767 
 768 int smb_ldap_upgrade_conn(LDAP *ldap_struct, int *new_version) 
     /* [<][>][^][v][top][bottom][index][help] */
 769 {
 770         int version;
 771         int rc;
 772         
 773         /* assume the worst */
 774         *new_version = LDAP_VERSION2;
 775 
 776         rc = ldap_get_option(ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
 777         if (rc) {
 778                 return rc;
 779         }
 780 
 781         if (version == LDAP_VERSION3) {
 782                 *new_version = LDAP_VERSION3;
 783                 return LDAP_SUCCESS;
 784         }
 785 
 786         /* try upgrade */
 787         version = LDAP_VERSION3;
 788         rc = ldap_set_option (ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
 789         if (rc) {
 790                 return rc;
 791         }
 792                 
 793         *new_version = LDAP_VERSION3;
 794         return LDAP_SUCCESS;
 795 }
 796 
 797 /*******************************************************************
 798  open a connection to the ldap server (just until the bind)
 799  ******************************************************************/
 800 
 801 int smb_ldap_setup_full_conn(LDAP **ldap_struct, const char *uri)
     /* [<][>][^][v][top][bottom][index][help] */
 802 {
 803         int rc, version;
 804 
 805         rc = smb_ldap_setup_conn(ldap_struct, uri);
 806         if (rc) {
 807                 return rc;
 808         }
 809 
 810         rc = smb_ldap_upgrade_conn(*ldap_struct, &version);
 811         if (rc) {
 812                 return rc;
 813         }
 814 
 815         rc = smb_ldap_start_tls(*ldap_struct, version);
 816         if (rc) {
 817                 return rc;
 818         }
 819 
 820         return LDAP_SUCCESS;
 821 }
 822 
 823 /*******************************************************************
 824  open a connection to the ldap server.
 825 ******************************************************************/
 826 static int smbldap_open_connection (struct smbldap_state *ldap_state)
     /* [<][>][^][v][top][bottom][index][help] */
 827 
 828 {
 829         int rc = LDAP_SUCCESS;
 830         int version;
 831         LDAP **ldap_struct = &ldap_state->ldap_struct;
 832 
 833         rc = smb_ldap_setup_conn(ldap_struct, ldap_state->uri);
 834         if (rc) {
 835                 return rc;
 836         }
 837 
 838         /* Store the LDAP pointer in a lookup list */
 839 
 840         smbldap_store_state(*ldap_struct, ldap_state);
 841 
 842         /* Upgrade to LDAPv3 if possible */
 843 
 844         rc = smb_ldap_upgrade_conn(*ldap_struct, &version);
 845         if (rc) {
 846                 return rc;
 847         }
 848 
 849         /* Start TLS if required */
 850 
 851         rc = smb_ldap_start_tls(*ldap_struct, version);
 852         if (rc) {
 853                 return rc;
 854         }
 855         
 856         DEBUG(2, ("smbldap_open_connection: connection opened\n"));
 857         return rc;
 858 }
 859 
 860 /*******************************************************************
 861  a rebind function for authenticated referrals
 862  This version takes a void* that we can shove useful stuff in :-)
 863 ******************************************************************/
 864 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
 865 #else
 866 static int rebindproc_with_state  (LDAP * ld, char **whop, char **credp, 
     /* [<][>][^][v][top][bottom][index][help] */
 867                                    int *methodp, int freeit, void *arg)
 868 {
 869         struct smbldap_state *ldap_state = arg;
 870         
 871         /** @TODO Should we be doing something to check what servers we rebind to?
 872             Could we get a referral to a machine that we don't want to give our
 873             username and password to? */
 874         
 875         if (freeit) {
 876                 SAFE_FREE(*whop);
 877                 if (*credp) {
 878                         memset(*credp, '\0', strlen(*credp));
 879                 }
 880                 SAFE_FREE(*credp);
 881         } else {
 882                 DEBUG(5,("rebind_proc_with_state: Rebinding as \"%s\"\n", 
 883                           ldap_state->bind_dn?ldap_state->bind_dn:"[Anonymous bind]"));
 884 
 885                 if (ldap_state->anonymous) {
 886                         *whop = NULL;
 887                         *credp = NULL;
 888                 } else {
 889                         *whop = SMB_STRDUP(ldap_state->bind_dn);
 890                         if (!*whop) {
 891                                 return LDAP_NO_MEMORY;
 892                         }
 893                         *credp = SMB_STRDUP(ldap_state->bind_secret);
 894                         if (!*credp) {
 895                                 SAFE_FREE(*whop);
 896                                 return LDAP_NO_MEMORY;
 897                         }
 898                 }
 899                 *methodp = LDAP_AUTH_SIMPLE;
 900         }
 901 
 902         GetTimeOfDay(&ldap_state->last_rebind);
 903                 
 904         return 0;
 905 }
 906 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 907 
 908 /*******************************************************************
 909  a rebind function for authenticated referrals
 910  This version takes a void* that we can shove useful stuff in :-)
 911  and actually does the connection.
 912 ******************************************************************/
 913 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
 914 static int rebindproc_connect_with_state (LDAP *ldap_struct, 
     /* [<][>][^][v][top][bottom][index][help] */
 915                                           LDAP_CONST char *url, 
 916                                           ber_tag_t request,
 917                                           ber_int_t msgid, void *arg)
 918 {
 919         struct smbldap_state *ldap_state =
 920                 (struct smbldap_state *)arg;
 921         int rc;
 922         int version;
 923 
 924         DEBUG(5,("rebindproc_connect_with_state: Rebinding to %s as \"%s\"\n", 
 925                  url, ldap_state->bind_dn?ldap_state->bind_dn:"[Anonymous bind]"));
 926 
 927         /* call START_TLS again (ldaps:// is handled by the OpenLDAP library
 928          * itself) before rebinding to another LDAP server to avoid to expose
 929          * our credentials. At least *try* to secure the connection - Guenther */
 930 
 931         smb_ldap_upgrade_conn(ldap_struct, &version);
 932         smb_ldap_start_tls(ldap_struct, version);
 933 
 934         /** @TODO Should we be doing something to check what servers we rebind to?
 935             Could we get a referral to a machine that we don't want to give our
 936             username and password to? */
 937 
 938         rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
 939 
 940         /* only set the last rebind timestamp when we did rebind after a
 941          * non-read LDAP operation. That way we avoid the replication sleep
 942          * after a simple redirected search operation - Guenther */
 943 
 944         switch (request) {
 945 
 946                 case LDAP_REQ_MODIFY:
 947                 case LDAP_REQ_ADD:
 948                 case LDAP_REQ_DELETE:
 949                 case LDAP_REQ_MODDN:
 950                 case LDAP_REQ_EXTENDED:
 951                         DEBUG(10,("rebindproc_connect_with_state: "
 952                                 "setting last_rebind timestamp "
 953                                 "(req: 0x%02x)\n", (unsigned int)request));
 954                         GetTimeOfDay(&ldap_state->last_rebind);
 955                         break;
 956                 default:
 957                         ZERO_STRUCT(ldap_state->last_rebind);
 958                         break;
 959         }
 960 
 961         return rc;
 962 }
 963 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 964 
 965 /*******************************************************************
 966  Add a rebind function for authenticated referrals
 967 ******************************************************************/
 968 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
 969 #else
 970 # if LDAP_SET_REBIND_PROC_ARGS == 2
 971 static int rebindproc (LDAP *ldap_struct, char **whop, char **credp,
     /* [<][>][^][v][top][bottom][index][help] */
 972                        int *method, int freeit )
 973 {
 974         struct smbldap_state *ldap_state = smbldap_find_state(ldap_struct);
 975 
 976         return rebindproc_with_state(ldap_struct, whop, credp,
 977                                      method, freeit, ldap_state);
 978         
 979 }
 980 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
 981 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 982 
 983 /*******************************************************************
 984  a rebind function for authenticated referrals
 985  this also does the connection, but no void*.
 986 ******************************************************************/
 987 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
 988 # if LDAP_SET_REBIND_PROC_ARGS == 2
 989 static int rebindproc_connect (LDAP * ld, LDAP_CONST char *url, int request,
     /* [<][>][^][v][top][bottom][index][help] */
 990                                ber_int_t msgid)
 991 {
 992         struct smbldap_state *ldap_state = smbldap_find_state(ld);
 993 
 994         return rebindproc_connect_with_state(ld, url, (ber_tag_t)request, msgid, 
 995                                              ldap_state);
 996 }
 997 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
 998 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 999 
1000 /*******************************************************************
1001  connect to the ldap server under system privilege.
1002 ******************************************************************/
1003 static int smbldap_connect_system(struct smbldap_state *ldap_state, LDAP * ldap_struct)
     /* [<][>][^][v][top][bottom][index][help] */
1004 {
1005         int rc;
1006         int version;
1007 
1008         if (!ldap_state->anonymous && !ldap_state->bind_dn) {
1009 
1010                 /* get the default dn and password only if they are not set already */
1011                 if (!fetch_ldap_pw(&ldap_state->bind_dn, &ldap_state->bind_secret)) {
1012                         DEBUG(0, ("ldap_connect_system: Failed to retrieve password from secrets.tdb\n"));
1013                         return LDAP_INVALID_CREDENTIALS;
1014                 }
1015         }
1016 
1017         /* removed the sasl_bind_s "EXTERNAL" stuff, as my testsuite 
1018            (OpenLDAP) doesnt' seem to support it */
1019            
1020         DEBUG(10,("ldap_connect_system: Binding to ldap server %s as \"%s\"\n",
1021                   ldap_state->uri, ldap_state->bind_dn));
1022 
1023 #ifdef HAVE_LDAP_SET_REBIND_PROC
1024 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
1025 # if LDAP_SET_REBIND_PROC_ARGS == 2     
1026         ldap_set_rebind_proc(ldap_struct, &rebindproc_connect); 
1027 # endif
1028 # if LDAP_SET_REBIND_PROC_ARGS == 3     
1029         ldap_set_rebind_proc(ldap_struct, &rebindproc_connect_with_state, (void *)ldap_state);  
1030 # endif
1031 #else /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1032 # if LDAP_SET_REBIND_PROC_ARGS == 2     
1033         ldap_set_rebind_proc(ldap_struct, &rebindproc); 
1034 # endif
1035 # if LDAP_SET_REBIND_PROC_ARGS == 3     
1036         ldap_set_rebind_proc(ldap_struct, &rebindproc_with_state, (void *)ldap_state);  
1037 # endif
1038 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1039 #endif
1040 
1041         rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
1042 
1043         if (rc != LDAP_SUCCESS) {
1044                 char *ld_error = NULL;
1045                 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
1046                                 &ld_error);
1047                 DEBUG(ldap_state->num_failures ? 2 : 0,
1048                       ("failed to bind to server %s with dn=\"%s\" Error: %s\n\t%s\n",
1049                                ldap_state->uri,
1050                                ldap_state->bind_dn ? ldap_state->bind_dn : "[Anonymous bind]",
1051                                ldap_err2string(rc),
1052                                ld_error ? ld_error : "(unknown)"));
1053                 SAFE_FREE(ld_error);
1054                 ldap_state->num_failures++;
1055                 return rc;
1056         }
1057 
1058         ldap_state->num_failures = 0;
1059         ldap_state->paged_results = False;
1060 
1061         ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
1062 
1063         if (smbldap_has_control(ldap_state->ldap_struct, ADS_PAGE_CTL_OID) && version == 3) {
1064                 ldap_state->paged_results = True;
1065         }
1066 
1067         DEBUG(3, ("ldap_connect_system: successful connection to the LDAP server\n"));
1068         DEBUGADD(10, ("ldap_connect_system: LDAP server %s support paged results\n", 
1069                 ldap_state->paged_results ? "does" : "does not"));
1070         return rc;
1071 }
1072 
1073 static void smbldap_idle_fn(struct event_context *event_ctx,
1074                             struct timed_event *te,
1075                             struct timeval now,
1076                             void *private_data);
1077 
1078 /**********************************************************************
1079  Connect to LDAP server (called before every ldap operation)
1080 *********************************************************************/
1081 static int smbldap_open(struct smbldap_state *ldap_state)
     /* [<][>][^][v][top][bottom][index][help] */
1082 {
1083         int rc, opt_rc;
1084         bool reopen = False;
1085         SMB_ASSERT(ldap_state);
1086 
1087         if ((ldap_state->ldap_struct != NULL) && ((ldap_state->last_ping + SMBLDAP_DONT_PING_TIME) < time(NULL))) {
1088 
1089 #ifdef HAVE_UNIXSOCKET
1090                 struct sockaddr_un addr;
1091 #else
1092                 struct sockaddr addr;
1093 #endif
1094                 socklen_t len = sizeof(addr);
1095                 int sd;
1096 
1097                 opt_rc = ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_DESC, &sd);
1098                 if (opt_rc == 0 && (getpeername(sd, (struct sockaddr *) &addr, &len)) < 0 )
1099                         reopen = True;
1100 
1101 #ifdef HAVE_UNIXSOCKET
1102                 if (opt_rc == 0 && addr.sun_family == AF_UNIX)
1103                         reopen = True;
1104 #endif
1105                 if (reopen) {
1106                         /* the other end has died. reopen. */
1107                         ldap_unbind(ldap_state->ldap_struct);
1108                         ldap_state->ldap_struct = NULL;
1109                         ldap_state->last_ping = (time_t)0;
1110                 } else {
1111                         ldap_state->last_ping = time(NULL);
1112                 } 
1113         }
1114 
1115         if (ldap_state->ldap_struct != NULL) {
1116                 DEBUG(11,("smbldap_open: already connected to the LDAP server\n"));
1117                 return LDAP_SUCCESS;
1118         }
1119 
1120         if ((rc = smbldap_open_connection(ldap_state))) {
1121                 return rc;
1122         }
1123 
1124         if ((rc = smbldap_connect_system(ldap_state, ldap_state->ldap_struct))) {
1125                 ldap_unbind(ldap_state->ldap_struct);
1126                 ldap_state->ldap_struct = NULL;
1127                 return rc;
1128         }
1129 
1130 
1131         ldap_state->last_ping = time(NULL);
1132         ldap_state->pid = sys_getpid();
1133 
1134         TALLOC_FREE(ldap_state->idle_event);
1135 
1136         if (ldap_state->event_context != NULL) {
1137                 ldap_state->idle_event = event_add_timed(
1138                         ldap_state->event_context, NULL,
1139                         timeval_current_ofs(SMBLDAP_IDLE_TIME, 0),
1140                         smbldap_idle_fn, ldap_state);
1141         }
1142 
1143         DEBUG(4,("The LDAP server is successfully connected\n"));
1144 
1145         return LDAP_SUCCESS;
1146 }
1147 
1148 /**********************************************************************
1149 Disconnect from LDAP server 
1150 *********************************************************************/
1151 static NTSTATUS smbldap_close(struct smbldap_state *ldap_state)
     /* [<][>][^][v][top][bottom][index][help] */
1152 {
1153         if (!ldap_state)
1154                 return NT_STATUS_INVALID_PARAMETER;
1155                 
1156         if (ldap_state->ldap_struct != NULL) {
1157                 ldap_unbind(ldap_state->ldap_struct);
1158                 ldap_state->ldap_struct = NULL;
1159         }
1160 
1161         smbldap_delete_state(ldap_state);
1162         
1163         DEBUG(5,("The connection to the LDAP server was closed\n"));
1164         /* maybe free the results here --metze */
1165         
1166         return NT_STATUS_OK;
1167 }
1168 
1169 static bool got_alarm;
1170 
1171 static void (*old_handler)(int);
1172 
1173 static void gotalarm_sig(int dummy)
     /* [<][>][^][v][top][bottom][index][help] */
1174 {
1175         got_alarm = True;
1176 }
1177 
1178 static int another_ldap_try(struct smbldap_state *ldap_state, int *rc,
     /* [<][>][^][v][top][bottom][index][help] */
1179                             int *attempts, time_t endtime)
1180 {
1181         time_t now = time(NULL);
1182         int open_rc = LDAP_SERVER_DOWN;
1183 
1184         if (*rc != LDAP_SERVER_DOWN)
1185                 goto no_next;
1186 
1187         if (now >= endtime) {
1188                 smbldap_close(ldap_state);
1189                 *rc = LDAP_TIMEOUT;
1190                 goto no_next;
1191         }
1192 
1193         if (*attempts == 0) {
1194                 got_alarm = False;
1195                 old_handler = CatchSignal(SIGALRM, gotalarm_sig);
1196                 alarm(endtime - now);
1197 
1198                 if (ldap_state->pid != sys_getpid())
1199                         smbldap_close(ldap_state);
1200         }
1201 
1202         while (1) {
1203 
1204                 if (*attempts != 0)
1205                         smb_msleep(1000);
1206 
1207                 *attempts += 1;
1208 
1209                 open_rc = smbldap_open(ldap_state);
1210 
1211                 if (open_rc == LDAP_SUCCESS) {
1212                         ldap_state->last_use = now;
1213                         return True;
1214                 }
1215 
1216                 if (open_rc == LDAP_INSUFFICIENT_ACCESS) {
1217                         /* The fact that we are non-root or any other
1218                          * access-denied condition will not change in the next
1219                          * round of trying */
1220                         *rc = open_rc;
1221                         break;
1222                 }
1223 
1224                 if (got_alarm) {
1225                         *rc = LDAP_TIMEOUT;
1226                         break;
1227                 }
1228 
1229                 if (open_rc != LDAP_SUCCESS) {
1230                         DEBUG(1, ("Connection to LDAP server failed for the "
1231                                   "%d try!\n", *attempts));
1232                 }
1233         }
1234 
1235  no_next:
1236         CatchSignal(SIGALRM, old_handler);
1237         alarm(0);
1238         ldap_state->last_use = now;
1239         return False;
1240 }
1241 
1242 /*********************************************************************
1243  ********************************************************************/
1244 
1245 static int smbldap_search_ext(struct smbldap_state *ldap_state,
     /* [<][>][^][v][top][bottom][index][help] */
1246                               const char *base, int scope, const char *filter, 
1247                               const char *attrs[], int attrsonly,
1248                               LDAPControl **sctrls, LDAPControl **cctrls, 
1249                               int sizelimit, LDAPMessage **res)
1250 {
1251         int             rc = LDAP_SERVER_DOWN;
1252         int             attempts = 0;
1253         char           *utf8_filter;
1254         time_t          endtime = time(NULL)+lp_ldap_timeout();
1255         struct          timeval timeout;
1256         size_t          converted_size;
1257 
1258         SMB_ASSERT(ldap_state);
1259         
1260         DEBUG(5,("smbldap_search_ext: base => [%s], filter => [%s], "
1261                  "scope => [%d]\n", base, filter, scope));
1262 
1263         if (ldap_state->last_rebind.tv_sec > 0) {
1264                 struct timeval  tval;
1265                 int64_t tdiff = 0;
1266                 int             sleep_time = 0;
1267 
1268                 ZERO_STRUCT(tval);
1269                 GetTimeOfDay(&tval);
1270 
1271                 tdiff = usec_time_diff(&tval, &ldap_state->last_rebind);
1272                 tdiff /= 1000; /* Convert to milliseconds. */
1273 
1274                 sleep_time = lp_ldap_replication_sleep()-(int)tdiff;
1275                 sleep_time = MIN(sleep_time, MAX_LDAP_REPLICATION_SLEEP_TIME);
1276 
1277                 if (sleep_time > 0) {
1278                         /* we wait for the LDAP replication */
1279                         DEBUG(5,("smbldap_search_ext: waiting %d milliseconds "
1280                                  "for LDAP replication.\n",sleep_time));
1281                         smb_msleep(sleep_time);
1282                         DEBUG(5,("smbldap_search_ext: go on!\n"));
1283                 }
1284                 ZERO_STRUCT(ldap_state->last_rebind);
1285         }
1286 
1287         if (!push_utf8_talloc(talloc_tos(), &utf8_filter, filter, &converted_size)) {
1288                 return LDAP_NO_MEMORY;
1289         }
1290 
1291         /* Setup timeout for the ldap_search_ext_s call - local and remote. */
1292         timeout.tv_sec = lp_ldap_timeout();
1293         timeout.tv_usec = 0;
1294 
1295         /* Setup alarm timeout.... Do we need both of these ? JRA.
1296          * Yes, I think we do need both of these. The server timeout only
1297          * covers the case where the server's operation takes too long. It
1298          * does not cover the case where the request hangs on its way to the
1299          * server. The server side timeout is not strictly necessary, it's
1300          * just a bit more kind to the server. VL. */
1301 
1302         got_alarm = 0;
1303         CatchSignal(SIGALRM, SIGNAL_CAST gotalarm_sig);
1304         alarm(lp_ldap_timeout());
1305         /* End setup timeout. */
1306 
1307         while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1308                 rc = ldap_search_ext_s(ldap_state->ldap_struct, base, scope, 
1309                                        utf8_filter,
1310                                        CONST_DISCARD(char **, attrs),
1311                                        attrsonly, sctrls, cctrls, &timeout,
1312                                        sizelimit, res);
1313                 if (rc != LDAP_SUCCESS) {
1314                         char *ld_error = NULL;
1315                         int ld_errno;
1316 
1317                         ldap_get_option(ldap_state->ldap_struct,
1318                                         LDAP_OPT_ERROR_NUMBER, &ld_errno);
1319 
1320                         ldap_get_option(ldap_state->ldap_struct,
1321                                         LDAP_OPT_ERROR_STRING, &ld_error);
1322                         DEBUG(10, ("Failed search for base: %s, error: %d (%s) "
1323                                    "(%s)\n", base, ld_errno,
1324                                    ldap_err2string(rc),
1325                                    ld_error ? ld_error : "unknown"));
1326                         SAFE_FREE(ld_error);
1327 
1328                         if (ld_errno == LDAP_SERVER_DOWN) {
1329                                 ldap_unbind(ldap_state->ldap_struct);
1330                                 ldap_state->ldap_struct = NULL;
1331                         }
1332                 }
1333         }
1334 
1335         TALLOC_FREE(utf8_filter);
1336 
1337         /* Teardown timeout. */
1338         CatchSignal(SIGALRM, SIGNAL_CAST SIG_IGN);
1339         alarm(0);
1340 
1341         if (got_alarm != 0)
1342                 return LDAP_TIMELIMIT_EXCEEDED;
1343 
1344         return rc;
1345 }
1346 
1347 int smbldap_search(struct smbldap_state *ldap_state, 
     /* [<][>][^][v][top][bottom][index][help] */
1348                    const char *base, int scope, const char *filter, 
1349                    const char *attrs[], int attrsonly, 
1350                    LDAPMessage **res)
1351 {
1352         return smbldap_search_ext(ldap_state, base, scope, filter, attrs,
1353                                   attrsonly, NULL, NULL, LDAP_NO_LIMIT, res);
1354 }
1355 
1356 int smbldap_search_paged(struct smbldap_state *ldap_state, 
     /* [<][>][^][v][top][bottom][index][help] */
1357                          const char *base, int scope, const char *filter, 
1358                          const char **attrs, int attrsonly, int pagesize,
1359                          LDAPMessage **res, void **cookie)
1360 {
1361         LDAPControl     pr;
1362         LDAPControl     **rcontrols;
1363         LDAPControl     *controls[2] = { NULL, NULL};
1364         BerElement      *cookie_be = NULL;
1365         struct berval   *cookie_bv = NULL;
1366         int             tmp = 0, i, rc;
1367         bool            critical = True;
1368 
1369         *res = NULL;
1370 
1371         DEBUG(3,("smbldap_search_paged: base => [%s], filter => [%s],"
1372                  "scope => [%d], pagesize => [%d]\n",
1373                  base, filter, scope, pagesize));
1374 
1375         cookie_be = ber_alloc_t(LBER_USE_DER);
1376         if (cookie_be == NULL) {
1377                 DEBUG(0,("smbldap_create_page_control: ber_alloc_t returns "
1378                          "NULL\n"));
1379                 return LDAP_NO_MEMORY;
1380         }
1381 
1382         /* construct cookie */
1383         if (*cookie != NULL) {
1384                 ber_printf(cookie_be, "{iO}", (ber_int_t) pagesize, *cookie);
1385                 ber_bvfree((struct berval *)*cookie); /* don't need it from last time */
1386                 *cookie = NULL;
1387         } else {
1388                 ber_printf(cookie_be, "{io}", (ber_int_t) pagesize, "", 0);
1389         }
1390         ber_flatten(cookie_be, &cookie_bv);
1391 
1392         pr.ldctl_oid = CONST_DISCARD(char *, ADS_PAGE_CTL_OID);
1393         pr.ldctl_iscritical = (char) critical;
1394         pr.ldctl_value.bv_len = cookie_bv->bv_len;
1395         pr.ldctl_value.bv_val = cookie_bv->bv_val;
1396 
1397         controls[0] = &pr;
1398         controls[1] = NULL;
1399 
1400         rc = smbldap_search_ext(ldap_state, base, scope, filter, attrs, 
1401                                  0, controls, NULL, LDAP_NO_LIMIT, res);
1402 
1403         ber_free(cookie_be, 1);
1404         ber_bvfree(cookie_bv);
1405 
1406         if (rc != 0) {
1407                 DEBUG(3,("smbldap_search_paged: smbldap_search_ext(%s) "
1408                          "failed with [%s]\n", filter, ldap_err2string(rc)));
1409                 goto done;
1410         }
1411 
1412         DEBUG(3,("smbldap_search_paged: search was successful\n"));
1413 
1414         rc = ldap_parse_result(ldap_state->ldap_struct, *res, NULL, NULL, 
1415                                NULL, NULL, &rcontrols,  0);
1416         if (rc != 0) {
1417                 DEBUG(3,("smbldap_search_paged: ldap_parse_result failed " \
1418                          "with [%s]\n", ldap_err2string(rc)));
1419                 goto done;
1420         }
1421 
1422         if (rcontrols == NULL)
1423                 goto done;
1424 
1425         for (i=0; rcontrols[i]; i++) {
1426 
1427                 if (strcmp(ADS_PAGE_CTL_OID, rcontrols[i]->ldctl_oid) != 0)
1428                         continue;
1429 
1430                 cookie_be = ber_init(&rcontrols[i]->ldctl_value);
1431                 ber_scanf(cookie_be,"{iO}", &tmp, &cookie_bv);
1432                 /* the berval is the cookie, but must be freed when it is all
1433                    done */
1434                 if (cookie_bv->bv_len)
1435                         *cookie=ber_bvdup(cookie_bv);
1436                 else
1437                         *cookie=NULL;
1438                 ber_bvfree(cookie_bv);
1439                 ber_free(cookie_be, 1);
1440                 break;
1441         }
1442         ldap_controls_free(rcontrols);
1443 done:   
1444         return rc;
1445 }
1446 
1447 int smbldap_modify(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
     /* [<][>][^][v][top][bottom][index][help] */
1448 {
1449         int             rc = LDAP_SERVER_DOWN;
1450         int             attempts = 0;
1451         char           *utf8_dn;
1452         time_t          endtime = time(NULL)+lp_ldap_timeout();
1453         size_t          converted_size;
1454 
1455         SMB_ASSERT(ldap_state);
1456 
1457         DEBUG(5,("smbldap_modify: dn => [%s]\n", dn ));
1458 
1459         if (!push_utf8_talloc(talloc_tos(), &utf8_dn, dn, &converted_size)) {
1460                 return LDAP_NO_MEMORY;
1461         }
1462 
1463         while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1464                 rc = ldap_modify_s(ldap_state->ldap_struct, utf8_dn, attrs);
1465                 if (rc != LDAP_SUCCESS) {
1466                         char *ld_error = NULL;
1467                         int ld_errno;
1468 
1469                         ldap_get_option(ldap_state->ldap_struct,
1470                                         LDAP_OPT_ERROR_NUMBER, &ld_errno);
1471 
1472                         ldap_get_option(ldap_state->ldap_struct,
1473                                         LDAP_OPT_ERROR_STRING, &ld_error);
1474                         DEBUG(10, ("Failed to modify dn: %s, error: %d (%s) "
1475                                    "(%s)\n", dn, ld_errno,
1476                                    ldap_err2string(rc),
1477                                    ld_error ? ld_error : "unknown"));
1478                         SAFE_FREE(ld_error);
1479 
1480                         if (ld_errno == LDAP_SERVER_DOWN) {
1481                                 ldap_unbind(ldap_state->ldap_struct);
1482                                 ldap_state->ldap_struct = NULL;
1483                         }
1484                 }
1485         }
1486                 
1487         TALLOC_FREE(utf8_dn);
1488         return rc;
1489 }
1490 
1491 int smbldap_add(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
     /* [<][>][^][v][top][bottom][index][help] */
1492 {
1493         int             rc = LDAP_SERVER_DOWN;
1494         int             attempts = 0;
1495         char           *utf8_dn;
1496         time_t          endtime = time(NULL)+lp_ldap_timeout();
1497         size_t          converted_size;
1498         
1499         SMB_ASSERT(ldap_state);
1500 
1501         DEBUG(5,("smbldap_add: dn => [%s]\n", dn ));
1502 
1503         if (!push_utf8_talloc(talloc_tos(), &utf8_dn, dn, &converted_size)) {
1504                 return LDAP_NO_MEMORY;
1505         }
1506 
1507         while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1508                 rc = ldap_add_s(ldap_state->ldap_struct, utf8_dn, attrs);
1509                 if (rc != LDAP_SUCCESS) {
1510                         char *ld_error = NULL;
1511                         int ld_errno;
1512 
1513                         ldap_get_option(ldap_state->ldap_struct,
1514                                         LDAP_OPT_ERROR_NUMBER, &ld_errno);
1515 
1516                         ldap_get_option(ldap_state->ldap_struct,
1517                                         LDAP_OPT_ERROR_STRING, &ld_error);
1518                         DEBUG(10, ("Failed to add dn: %s, error: %d (%s) "
1519                                    "(%s)\n", dn, ld_errno,
1520                                    ldap_err2string(rc),
1521                                    ld_error ? ld_error : "unknown"));
1522                         SAFE_FREE(ld_error);
1523 
1524                         if (ld_errno == LDAP_SERVER_DOWN) {
1525                                 ldap_unbind(ldap_state->ldap_struct);
1526                                 ldap_state->ldap_struct = NULL;
1527                         }
1528                 }
1529         }
1530         
1531         TALLOC_FREE(utf8_dn);
1532         return rc;
1533 }
1534 
1535 int smbldap_delete(struct smbldap_state *ldap_state, const char *dn)
     /* [<][>][^][v][top][bottom][index][help] */
1536 {
1537         int             rc = LDAP_SERVER_DOWN;
1538         int             attempts = 0;
1539         char           *utf8_dn;
1540         time_t          endtime = time(NULL)+lp_ldap_timeout();
1541         size_t          converted_size;
1542         
1543         SMB_ASSERT(ldap_state);
1544 
1545         DEBUG(5,("smbldap_delete: dn => [%s]\n", dn ));
1546 
1547         if (!push_utf8_talloc(talloc_tos(), &utf8_dn, dn, &converted_size)) {
1548                 return LDAP_NO_MEMORY;
1549         }
1550 
1551         while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1552                 rc = ldap_delete_s(ldap_state->ldap_struct, utf8_dn);
1553                 if (rc != LDAP_SUCCESS) {
1554                         char *ld_error = NULL;
1555                         int ld_errno;
1556 
1557                         ldap_get_option(ldap_state->ldap_struct,
1558                                         LDAP_OPT_ERROR_NUMBER, &ld_errno);
1559 
1560                         ldap_get_option(ldap_state->ldap_struct,
1561                                         LDAP_OPT_ERROR_STRING, &ld_error);
1562                         DEBUG(10, ("Failed to delete dn: %s, error: %d (%s) "
1563                                    "(%s)\n", dn, ld_errno,
1564                                    ldap_err2string(rc),
1565                                    ld_error ? ld_error : "unknown"));
1566                         SAFE_FREE(ld_error);
1567 
1568                         if (ld_errno == LDAP_SERVER_DOWN) {
1569                                 ldap_unbind(ldap_state->ldap_struct);
1570                                 ldap_state->ldap_struct = NULL;
1571                         }
1572                 }
1573         }
1574         
1575         TALLOC_FREE(utf8_dn);
1576         return rc;
1577 }
1578 
1579 int smbldap_extended_operation(struct smbldap_state *ldap_state, 
     /* [<][>][^][v][top][bottom][index][help] */
1580                                LDAP_CONST char *reqoid, struct berval *reqdata, 
1581                                LDAPControl **serverctrls, LDAPControl **clientctrls, 
1582                                char **retoidp, struct berval **retdatap)
1583 {
1584         int             rc = LDAP_SERVER_DOWN;
1585         int             attempts = 0;
1586         time_t          endtime = time(NULL)+lp_ldap_timeout();
1587         
1588         if (!ldap_state)
1589                 return (-1);
1590 
1591         while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1592                 rc = ldap_extended_operation_s(ldap_state->ldap_struct, reqoid,
1593                                                reqdata, serverctrls,
1594                                                clientctrls, retoidp, retdatap);
1595                 if (rc != LDAP_SUCCESS) {
1596                         char *ld_error = NULL;
1597                         int ld_errno;
1598 
1599                         ldap_get_option(ldap_state->ldap_struct,
1600                                         LDAP_OPT_ERROR_NUMBER, &ld_errno);
1601 
1602                         ldap_get_option(ldap_state->ldap_struct,
1603                                         LDAP_OPT_ERROR_STRING, &ld_error);
1604                         DEBUG(10, ("Extended operation failed with error: "
1605                                    "%d (%s) (%s)\n", ld_errno,
1606                                    ldap_err2string(rc),
1607                                    ld_error ? ld_error : "unknown"));
1608                         SAFE_FREE(ld_error);
1609 
1610                         if (ld_errno == LDAP_SERVER_DOWN) {
1611                                 ldap_unbind(ldap_state->ldap_struct);
1612                                 ldap_state->ldap_struct = NULL;
1613                         }
1614                 }
1615         }
1616                 
1617         return rc;
1618 }
1619 
1620 /*******************************************************************
1621  run the search by name.
1622 ******************************************************************/
1623 int smbldap_search_suffix (struct smbldap_state *ldap_state,
     /* [<][>][^][v][top][bottom][index][help] */
1624                            const char *filter, const char **search_attr,
1625                            LDAPMessage ** result)
1626 {
1627         return smbldap_search(ldap_state, lp_ldap_suffix(), LDAP_SCOPE_SUBTREE,
1628                               filter, search_attr, 0, result);
1629 }
1630 
1631 static void smbldap_idle_fn(struct event_context *event_ctx,
     /* [<][>][^][v][top][bottom][index][help] */
1632                             struct timed_event *te,
1633                             struct timeval now,
1634                             void *private_data)
1635 {
1636         struct smbldap_state *state = (struct smbldap_state *)private_data;
1637 
1638         TALLOC_FREE(state->idle_event);
1639 
1640         if (state->ldap_struct == NULL) {
1641                 DEBUG(10,("ldap connection not connected...\n"));
1642                 return;
1643         }
1644                 
1645         if ((state->last_use+SMBLDAP_IDLE_TIME) > now.tv_sec) {
1646                 DEBUG(10,("ldap connection not idle...\n"));
1647 
1648                 state->idle_event = event_add_timed(
1649                         event_ctx, NULL,
1650                         timeval_add(&now, SMBLDAP_IDLE_TIME, 0),
1651                         smbldap_idle_fn,
1652                         private_data);
1653                 return;
1654         }
1655                 
1656         DEBUG(7,("ldap connection idle...closing connection\n"));
1657         smbldap_close(state);
1658 }
1659 
1660 /**********************************************************************
1661  Housekeeping
1662  *********************************************************************/
1663 
1664 void smbldap_free_struct(struct smbldap_state **ldap_state) 
     /* [<][>][^][v][top][bottom][index][help] */
1665 {
1666         smbldap_close(*ldap_state);
1667         
1668         if ((*ldap_state)->bind_secret) {
1669                 memset((*ldap_state)->bind_secret, '\0', strlen((*ldap_state)->bind_secret));
1670         }
1671 
1672         SAFE_FREE((*ldap_state)->bind_dn);
1673         SAFE_FREE((*ldap_state)->bind_secret);
1674 
1675         TALLOC_FREE((*ldap_state)->idle_event);
1676 
1677         *ldap_state = NULL;
1678 
1679         /* No need to free any further, as it is talloc()ed */
1680 }
1681 
1682 
1683 /**********************************************************************
1684  Intitalise the 'general' ldap structures, on which ldap operations may be conducted
1685  *********************************************************************/
1686 
1687 NTSTATUS smbldap_init(TALLOC_CTX *mem_ctx, struct event_context *event_ctx,
     /* [<][>][^][v][top][bottom][index][help] */
1688                       const char *location,
1689                       struct smbldap_state **smbldap_state)
1690 {
1691         *smbldap_state = TALLOC_ZERO_P(mem_ctx, struct smbldap_state);
1692         if (!*smbldap_state) {
1693                 DEBUG(0, ("talloc() failed for ldapsam private_data!\n"));
1694                 return NT_STATUS_NO_MEMORY;
1695         }
1696 
1697         if (location) {
1698                 (*smbldap_state)->uri = talloc_strdup(mem_ctx, location);
1699         } else {
1700                 (*smbldap_state)->uri = "ldap://localhost";
1701         }
1702 
1703         (*smbldap_state)->event_context = event_ctx;
1704 
1705         return NT_STATUS_OK;
1706 }
1707 
1708  char *smbldap_talloc_dn(TALLOC_CTX *mem_ctx, LDAP *ld,
     /* [<][>][^][v][top][bottom][index][help] */
1709                          LDAPMessage *entry)
1710 {
1711         char *utf8_dn, *unix_dn;
1712         size_t converted_size;
1713 
1714         utf8_dn = ldap_get_dn(ld, entry);
1715         if (!utf8_dn) {
1716                 DEBUG (5, ("smbldap_talloc_dn: ldap_get_dn failed\n"));
1717                 return NULL;
1718         }
1719         if (!pull_utf8_talloc(mem_ctx, &unix_dn, utf8_dn, &converted_size)) {
1720                 DEBUG (0, ("smbldap_talloc_dn: String conversion failure utf8 "
1721                            "[%s]\n", utf8_dn));
1722                 return NULL;
1723         }
1724         ldap_memfree(utf8_dn);
1725         return unix_dn;
1726 }
1727 
1728 /*******************************************************************
1729  Check if root-dse has a certain Control or Extension
1730 ********************************************************************/
1731 
1732 static bool smbldap_check_root_dse(LDAP *ld, const char **attrs, const char *value) 
     /* [<][>][^][v][top][bottom][index][help] */
1733 {
1734         LDAPMessage *msg = NULL;
1735         LDAPMessage *entry = NULL;
1736         char **values = NULL;
1737         int rc, num_result, num_values, i;
1738         bool result = False;
1739 
1740         if (!attrs[0]) {
1741                 DEBUG(3,("smbldap_check_root_dse: nothing to look for\n"));
1742                 return False;
1743         }
1744 
1745         if (!strequal(attrs[0], "supportedExtension") && 
1746             !strequal(attrs[0], "supportedControl") && 
1747             !strequal(attrs[0], "namingContexts")) {
1748                 DEBUG(3,("smbldap_check_root_dse: no idea what to query root-dse for: %s ?\n", attrs[0]));
1749                 return False;
1750         }
1751 
1752         rc = ldap_search_s(ld, "", LDAP_SCOPE_BASE, 
1753                            "(objectclass=*)", CONST_DISCARD(char **, attrs), 0 , &msg);
1754 
1755         if (rc != LDAP_SUCCESS) {
1756                 DEBUG(3,("smbldap_check_root_dse: Could not search rootDSE\n"));
1757                 return False;
1758         }
1759 
1760         num_result = ldap_count_entries(ld, msg);
1761 
1762         if (num_result != 1) {
1763                 DEBUG(3,("smbldap_check_root_dse: Expected one rootDSE, got %d\n", num_result));
1764                 goto done;
1765         }
1766 
1767         entry = ldap_first_entry(ld, msg);
1768 
1769         if (entry == NULL) {
1770                 DEBUG(3,("smbldap_check_root_dse: Could not retrieve rootDSE\n"));
1771                 goto done;
1772         }
1773 
1774         values = ldap_get_values(ld, entry, attrs[0]);
1775 
1776         if (values == NULL) {
1777                 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not support any %s\n", attrs[0]));
1778                 goto done;
1779         }
1780 
1781         num_values = ldap_count_values(values);
1782 
1783         if (num_values == 0) {
1784                 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not have any %s\n", attrs[0]));
1785                 goto done;
1786         }
1787 
1788         for (i=0; i<num_values; i++) {
1789                 if (strcmp(values[i], value) == 0)
1790                         result = True;
1791         }
1792 
1793 
1794  done:
1795         if (values != NULL)
1796                 ldap_value_free(values);
1797         if (msg != NULL)
1798                 ldap_msgfree(msg);
1799 
1800         return result;
1801 
1802 }
1803 
1804 /*******************************************************************
1805  Check if LDAP-Server supports a certain Control (OID in string format)
1806 ********************************************************************/
1807 
1808 bool smbldap_has_control(LDAP *ld, const char *control)
     /* [<][>][^][v][top][bottom][index][help] */
1809 {
1810         const char *attrs[] = { "supportedControl", NULL };
1811         return smbldap_check_root_dse(ld, attrs, control);
1812 }
1813 
1814 /*******************************************************************
1815  Check if LDAP-Server supports a certain Extension (OID in string format)
1816 ********************************************************************/
1817 
1818 bool smbldap_has_extension(LDAP *ld, const char *extension)
     /* [<][>][^][v][top][bottom][index][help] */
1819 {
1820         const char *attrs[] = { "supportedExtension", NULL };
1821         return smbldap_check_root_dse(ld, attrs, extension);
1822 }
1823 
1824 /*******************************************************************
1825  Check if LDAP-Server holds a given namingContext
1826 ********************************************************************/
1827 
1828 bool smbldap_has_naming_context(LDAP *ld, const char *naming_context)
     /* [<][>][^][v][top][bottom][index][help] */
1829 {
1830         const char *attrs[] = { "namingContexts", NULL };
1831         return smbldap_check_root_dse(ld, attrs, naming_context);
1832 }
1833 
1834 bool smbldap_set_creds(struct smbldap_state *ldap_state, bool anon, const char *dn, const char *secret)
     /* [<][>][^][v][top][bottom][index][help] */
1835 {
1836         ldap_state->anonymous = anon;
1837 
1838         /* free any previously set credential */
1839 
1840         SAFE_FREE(ldap_state->bind_dn);
1841         if (ldap_state->bind_secret) {
1842                 /* make sure secrets are zeroed out of memory */
1843                 memset(ldap_state->bind_secret, '\0', strlen(ldap_state->bind_secret));
1844                 SAFE_FREE(ldap_state->bind_secret);
1845         }
1846 
1847         if ( ! anon) {
1848                 ldap_state->bind_dn = SMB_STRDUP(dn);
1849                 ldap_state->bind_secret = SMB_STRDUP(secret);
1850         }
1851 
1852         return True;
1853 }

/* [<][>][^][v][top][bottom][index][help] */