source/lib/smbldap.c

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