source3/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  BOOL smbldap_get_single_attribute (LDAP * ldap_struct, LDAPMessage * entry,
 288                                    const char *attribute, pstring value)
 289 {
 290         char **values;
 291
 292         if ( !attribute )
 293                 return False;
 294
 295         value[0] = '\0';
 296
 297         if ((values = ldap_get_values (ldap_struct, entry, attribute)) == NULL) {
 298                 DEBUG (10, ("smbldap_get_single_attribute: [%s] = [<does not exist>]\n", attribute));
 299
 300                 return False;
 301         }
 302
 303         if (convert_string(CH_UTF8, CH_UNIX,values[0], -1, value, sizeof(pstring)) == (size_t)-1)
 304         {
 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 /**********************************************************************
 407   Set attribute to newval in LDAP, regardless of what value the
 408   attribute had in LDAP before.
 409 *********************************************************************/
 410  void smbldap_make_mod(LDAP *ldap_struct, LDAPMessage *existing,
 411                       LDAPMod ***mods,
 412                       const char *attribute, const char *newval)
 413 {
 414         char **values = NULL;
 415
 416         if (existing != NULL) {
 417                 values = ldap_get_values(ldap_struct, existing, attribute);
 418         }
 419
 420         /* all of our string attributes are case insensitive */
 421
 422         if ((values != NULL) && (values[0] != NULL) &&
 423             StrCaseCmp(values[0], newval) == 0)
 424         {
 425
 426                 /* Believe it or not, but LDAP will deny a delete and
 427                    an add at the same time if the values are the
 428                    same... */
 429
 430                 ldap_value_free(values);
 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 (values == NULL) {
 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, values[0]);
 455         ldap_value_free(values);
 456 }
 457
 458
 459 /**********************************************************************
 460  Some varients of the LDAP rebind code do not pass in the third 'arg'
 461  pointer to a void*, so we try and work around it by assuming that the
 462  value of the 'LDAP *' pointer is the same as the one we had passed in
 463  **********************************************************************/
 464
 465 struct smbldap_state_lookup {
 466         LDAP *ld;
 467         struct smbldap_state *smbldap_state;
 468         struct smbldap_state_lookup *prev, *next;
 469 };
 470
 471 static struct smbldap_state_lookup *smbldap_state_lookup_list;
 472
 473 static struct smbldap_state *smbldap_find_state(LDAP *ld)
 474 {
 475         struct smbldap_state_lookup *t;
 476
 477         for (t = smbldap_state_lookup_list; t; t = t->next) {
 478                 if (t->ld == ld) {
 479                         return t->smbldap_state;
 480                 }
 481         }
 482         return NULL;
 483 }
 484
 485 static void smbldap_delete_state(struct smbldap_state *smbldap_state)
 486 {
 487         struct smbldap_state_lookup *t;
 488
 489         for (t = smbldap_state_lookup_list; t; t = t->next) {
 490                 if (t->smbldap_state == smbldap_state) {
 491                         DLIST_REMOVE(smbldap_state_lookup_list, t);
 492                         SAFE_FREE(t);
 493                         return;
 494                 }
 495         }
 496 }
 497
 498 static void smbldap_store_state(LDAP *ld, struct smbldap_state *smbldap_state)
 499 {
 500         struct smbldap_state *tmp_ldap_state;
 501         struct smbldap_state_lookup *t;
 502         struct smbldap_state_lookup *tmp;
 503
 504         if ((tmp_ldap_state = smbldap_find_state(ld))) {
 505                 SMB_ASSERT(tmp_ldap_state == smbldap_state);
 506                 return;
 507         }
 508
 509         t = smb_xmalloc(sizeof(*t));
 510         ZERO_STRUCTP(t);
 511
 512         DLIST_ADD_END(smbldap_state_lookup_list, t, tmp);
 513         t->ld = ld;
 514         t->smbldap_state = smbldap_state;
 515 }
 516
 517 /*******************************************************************
 518  open a connection to the ldap server.
 519 ******************************************************************/
 520 static int smbldap_open_connection (struct smbldap_state *ldap_state)
 521
 522 {
 523         int rc = LDAP_SUCCESS;
 524         int version;
 525         BOOL ldap_v3 = False;
 526         LDAP **ldap_struct = &ldap_state->ldap_struct;
 527
 528 #ifdef HAVE_LDAP_INITIALIZE
 529         DEBUG(10, ("smbldap_open_connection: %s\n", ldap_state->uri));
 530
 531         if ((rc = ldap_initialize(ldap_struct, ldap_state->uri)) != LDAP_SUCCESS) {
 532                 DEBUG(0, ("ldap_initialize: %s\n", ldap_err2string(rc)));
 533                 return rc;
 534         }
 535 #else
 536
 537         /* Parse the string manually */
 538
 539         {
 540                 int port = 0;
 541                 fstring protocol;
 542                 fstring host;
 543                 const char *p = ldap_state->uri;
 544                 SMB_ASSERT(sizeof(protocol)>10 && sizeof(host)>254);
 545
 546                 /* skip leading "URL:" (if any) */
 547                 if ( strncasecmp( p, "URL:", 4 ) == 0 ) {
 548                         p += 4;
 549                 }
 550
 551                 sscanf(p, "%10[^:]://%254s[^:]:%d", protocol, host, &port);
 552
 553                 if (port == 0) {
 554                         if (strequal(protocol, "ldap")) {
 555                                 port = LDAP_PORT;
 556                         } else if (strequal(protocol, "ldaps")) {
 557                                 port = LDAPS_PORT;
 558                         } else {
 559                                 DEBUG(0, ("unrecognised protocol (%s)!\n", protocol));
 560                         }
 561                 }
 562
 563                 if ((*ldap_struct = ldap_init(host, port)) == NULL)     {
 564                         DEBUG(0, ("ldap_init failed !\n"));
 565                         return LDAP_OPERATIONS_ERROR;
 566                 }
 567
 568                 if (strequal(protocol, "ldaps")) {
 569 #ifdef LDAP_OPT_X_TLS
 570                         int tls = LDAP_OPT_X_TLS_HARD;
 571                         if (ldap_set_option (*ldap_struct, LDAP_OPT_X_TLS, &tls) != LDAP_SUCCESS)
 572                         {
 573                                 DEBUG(0, ("Failed to setup a TLS session\n"));
 574                         }
 575
 576                         DEBUG(3,("LDAPS option set...!\n"));
 577 #else
 578                         DEBUG(0,("smbldap_open_connection: Secure connection not supported by LDAP client libraries!\n"));
 579                         return LDAP_OPERATIONS_ERROR;
 580 #endif
 581                 }
 582         }
 583 #endif
 584
 585         /* Store the LDAP pointer in a lookup list */
 586
 587         smbldap_store_state(*ldap_struct, ldap_state);
 588
 589         /* Upgrade to LDAPv3 if possible */
 590
 591         if (ldap_get_option(*ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version) == LDAP_OPT_SUCCESS)
 592         {
 593                 if (version != LDAP_VERSION3)
 594                 {
 595                         version = LDAP_VERSION3;
 596                         if (ldap_set_option (*ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version) == LDAP_OPT_SUCCESS) {
 597                                 ldap_v3 = True;
 598                         }
 599                 } else {
 600                         ldap_v3 = True;
 601                 }
 602         }
 603
 604         if (lp_ldap_ssl() == LDAP_SSL_START_TLS) {
 605 #ifdef LDAP_OPT_X_TLS
 606                 if (ldap_v3) {
 607                         if ((rc = ldap_start_tls_s (*ldap_struct, NULL, NULL)) != LDAP_SUCCESS)
 608                         {
 609                                 DEBUG(0,("Failed to issue the StartTLS instruction: %s\n",
 610                                          ldap_err2string(rc)));
 611                                 return rc;
 612                         }
 613                         DEBUG (3, ("StartTLS issued: using a TLS connection\n"));
 614                 } else {
 615
 616                         DEBUG(0, ("Need LDAPv3 for Start TLS\n"));
 617                         return LDAP_OPERATIONS_ERROR;
 618                 }
 619 #else
 620                 DEBUG(0,("smbldap_open_connection: StartTLS not supported by LDAP client libraries!\n"));
 621                 return LDAP_OPERATIONS_ERROR;
 622 #endif
 623         }
 624
 625         DEBUG(2, ("smbldap_open_connection: connection opened\n"));
 626         return rc;
 627 }
 628
 629
 630 /*******************************************************************
 631  a rebind function for authenticated referrals
 632  This version takes a void* that we can shove useful stuff in :-)
 633 ******************************************************************/
 634 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
 635 #else
 636 static int rebindproc_with_state  (LDAP * ld, char **whop, char **credp,
 637                                    int *methodp, int freeit, void *arg)
 638 {
 639         struct smbldap_state *ldap_state = arg;
 640
 641         /** @TODO Should we be doing something to check what servers we rebind to?
 642             Could we get a referral to a machine that we don't want to give our
 643             username and password to? */
 644
 645         if (freeit) {
 646                 SAFE_FREE(*whop);
 647                 memset(*credp, '\0', strlen(*credp));
 648                 SAFE_FREE(*credp);
 649         } else {
 650                 DEBUG(5,("rebind_proc_with_state: Rebinding as \"%s\"\n",
 651                           ldap_state->bind_dn));
 652
 653                 *whop = strdup(ldap_state->bind_dn);
 654                 if (!*whop) {
 655                         return LDAP_NO_MEMORY;
 656                 }
 657                 *credp = strdup(ldap_state->bind_secret);
 658                 if (!*credp) {
 659                         SAFE_FREE(*whop);
 660                         return LDAP_NO_MEMORY;
 661                 }
 662                 *methodp = LDAP_AUTH_SIMPLE;
 663         }
 664         return 0;
 665 }
 666 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 667
 668 /*******************************************************************
 669  a rebind function for authenticated referrals
 670  This version takes a void* that we can shove useful stuff in :-)
 671  and actually does the connection.
 672 ******************************************************************/
 673 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
 674 static int rebindproc_connect_with_state (LDAP *ldap_struct,
 675                                           LDAP_CONST char *url,
 676                                           ber_tag_t request,
 677                                           ber_int_t msgid, void *arg)
 678 {
 679         struct smbldap_state *ldap_state = arg;
 680         int rc;
 681         DEBUG(5,("rebindproc_connect_with_state: Rebinding as \"%s\"\n",
 682                  ldap_state->bind_dn));
 683
 684         /** @TODO Should we be doing something to check what servers we rebind to?
 685             Could we get a referral to a machine that we don't want to give our
 686             username and password to? */
 687
 688         rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
 689
 690         return rc;
 691 }
 692 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 693
 694 /*******************************************************************
 695  Add a rebind function for authenticated referrals
 696 ******************************************************************/
 697 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
 698 #else
 699 # if LDAP_SET_REBIND_PROC_ARGS == 2
 700 static int rebindproc (LDAP *ldap_struct, char **whop, char **credp,
 701                        int *method, int freeit )
 702 {
 703         struct smbldap_state *ldap_state = smbldap_find_state(ldap_struct);
 704
 705         return rebindproc_with_state(ldap_struct, whop, credp,
 706                                      method, freeit, ldap_state);
 707
 708 }
 709 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
 710 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 711
 712 /*******************************************************************
 713  a rebind function for authenticated referrals
 714  this also does the connection, but no void*.
 715 ******************************************************************/
 716 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
 717 # if LDAP_SET_REBIND_PROC_ARGS == 2
 718 static int rebindproc_connect (LDAP * ld, LDAP_CONST char *url, int request,
 719                                ber_int_t msgid)
 720 {
 721         struct smbldap_state *ldap_state = smbldap_find_state(ld);
 722
 723         return rebindproc_connect_with_state(ld, url, (ber_tag_t)request, msgid,
 724                                              ldap_state);
 725 }
 726 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
 727 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 728
 729 /*******************************************************************
 730  connect to the ldap server under system privilege.
 731 ******************************************************************/
 732 static int smbldap_connect_system(struct smbldap_state *ldap_state, LDAP * ldap_struct)
 733 {
 734         int rc;
 735         char *ldap_dn;
 736         char *ldap_secret;
 737
 738         /* get the password */
 739         if (!fetch_ldap_pw(&ldap_dn, &ldap_secret))
 740         {
 741                 DEBUG(0, ("ldap_connect_system: Failed to retrieve password from secrets.tdb\n"));
 742                 return LDAP_INVALID_CREDENTIALS;
 743         }
 744
 745         ldap_state->bind_dn = ldap_dn;
 746         ldap_state->bind_secret = ldap_secret;
 747
 748         /* removed the sasl_bind_s "EXTERNAL" stuff, as my testsuite
 749            (OpenLDAP) doesnt' seem to support it */
 750
 751         DEBUG(10,("ldap_connect_system: Binding to ldap server %s as \"%s\"\n",
 752                   ldap_state->uri, ldap_dn));
 753
 754 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
 755 # if LDAP_SET_REBIND_PROC_ARGS == 2
 756         ldap_set_rebind_proc(ldap_struct, &rebindproc_connect);
 757 # endif
 758 # if LDAP_SET_REBIND_PROC_ARGS == 3
 759         ldap_set_rebind_proc(ldap_struct, &rebindproc_connect_with_state, (void *)ldap_state);
 760 # endif
 761 #else /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 762 # if LDAP_SET_REBIND_PROC_ARGS == 2
 763         ldap_set_rebind_proc(ldap_struct, &rebindproc);
 764 # endif
 765 # if LDAP_SET_REBIND_PROC_ARGS == 3
 766         ldap_set_rebind_proc(ldap_struct, &rebindproc_with_state, (void *)ldap_state);
 767 # endif
 768 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 769
 770         rc = ldap_simple_bind_s(ldap_struct, ldap_dn, ldap_secret);
 771
 772         if (rc != LDAP_SUCCESS) {
 773                 char *ld_error = NULL;
 774                 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
 775                                 &ld_error);
 776                 DEBUG(ldap_state->num_failures ? 2 : 0,
 777                       ("failed to bind to server with dn= %s Error: %s\n\t%s\n",
 778                                ldap_dn ? ldap_dn : "(unknown)", ldap_err2string(rc),
 779                                ld_error ? ld_error : "(unknown)"));
 780                 SAFE_FREE(ld_error);
 781                 ldap_state->num_failures++;
 782                 return rc;
 783         }
 784
 785         ldap_state->num_failures = 0;
 786
 787         DEBUG(3, ("ldap_connect_system: succesful connection to the LDAP server\n"));
 788         return rc;
 789 }
 790
 791 /**********************************************************************
 792 Connect to LDAP server (called before every ldap operation)
 793 *********************************************************************/
 794 static int smbldap_open(struct smbldap_state *ldap_state)
 795 {
 796         int rc;
 797         SMB_ASSERT(ldap_state);
 798
 799 #ifndef NO_LDAP_SECURITY
 800         if (geteuid() != 0) {
 801                 DEBUG(0, ("smbldap_open: cannot access LDAP when not root..\n"));
 802                 return  LDAP_INSUFFICIENT_ACCESS;
 803         }
 804 #endif
 805
 806         if ((ldap_state->ldap_struct != NULL) && ((ldap_state->last_ping + SMBLDAP_DONT_PING_TIME) < time(NULL))) {
 807                 struct sockaddr_un addr;
 808                 socklen_t len = sizeof(addr);
 809                 int sd;
 810                 if (ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_DESC, &sd) == 0 &&
 811                     getpeername(sd, (struct sockaddr *) &addr, &len) < 0) {
 812                         /* the other end has died. reopen. */
 813                         ldap_unbind_ext(ldap_state->ldap_struct, NULL, NULL);
 814                         ldap_state->ldap_struct = NULL;
 815                         ldap_state->last_ping = (time_t)0;
 816                 } else {
 817                         ldap_state->last_ping = time(NULL);
 818                 }
 819         }
 820
 821         if (ldap_state->ldap_struct != NULL) {
 822                 DEBUG(11,("smbldap_open: already connected to the LDAP server\n"));
 823                 return LDAP_SUCCESS;
 824         }
 825
 826         if ((rc = smbldap_open_connection(ldap_state))) {
 827                 return rc;
 828         }
 829
 830         if ((rc = smbldap_connect_system(ldap_state, ldap_state->ldap_struct))) {
 831                 ldap_unbind_ext(ldap_state->ldap_struct, NULL, NULL);
 832                 ldap_state->ldap_struct = NULL;
 833                 return rc;
 834         }
 835
 836
 837         ldap_state->last_ping = time(NULL);
 838         DEBUG(4,("The LDAP server is succesful connected\n"));
 839
 840         return LDAP_SUCCESS;
 841 }
 842
 843 /**********************************************************************
 844 Disconnect from LDAP server
 845 *********************************************************************/
 846 static NTSTATUS smbldap_close(struct smbldap_state *ldap_state)
 847 {
 848         if (!ldap_state)
 849                 return NT_STATUS_INVALID_PARAMETER;
 850
 851         if (ldap_state->ldap_struct != NULL) {
 852                 ldap_unbind_ext(ldap_state->ldap_struct, NULL, NULL);
 853                 ldap_state->ldap_struct = NULL;
 854         }
 855
 856         smbldap_delete_state(ldap_state);
 857
 858         DEBUG(5,("The connection to the LDAP server was closed\n"));
 859         /* maybe free the results here --metze */
 860
 861
 862
 863         return NT_STATUS_OK;
 864 }
 865
 866 int smbldap_retry_open(struct smbldap_state *ldap_state, int *attempts)
 867 {
 868         int rc;
 869
 870         SMB_ASSERT(ldap_state && attempts);
 871
 872         if (*attempts != 0) {
 873                 unsigned int sleep_time;
 874                 uint8 rand_byte;
 875
 876                 /* Sleep for a random timeout */
 877                 rand_byte = (char)(sys_random());
 878
 879                 sleep_time = (((*attempts)*(*attempts))/2)*rand_byte*2;
 880                 /* we retry after (0.5, 1, 2, 3, 4.5, 6) seconds
 881                    on average.
 882                  */
 883                 DEBUG(3, ("Sleeping for %u milliseconds before reconnecting\n",
 884                           sleep_time));
 885                 msleep(sleep_time);
 886         }
 887         (*attempts)++;
 888
 889         if ((rc = smbldap_open(ldap_state))) {
 890                 DEBUG(1,("Connection to LDAP Server failed for the %d try!\n",*attempts));
 891                 return rc;
 892         }
 893
 894         return LDAP_SUCCESS;
 895 }
 896
 897
 898 /*********************************************************************
 899  ********************************************************************/
 900
 901 int smbldap_search(struct smbldap_state *ldap_state,
 902                    const char *base, int scope, const char *filter,
 903                    char *attrs[], int attrsonly,
 904                    LDAPMessage **res)
 905 {
 906         int             rc = LDAP_SERVER_DOWN;
 907         int             attempts = 0;
 908         char           *utf8_filter;
 909
 910         SMB_ASSERT(ldap_state);
 911
 912         if (push_utf8_allocate(&utf8_filter, filter) == (size_t)-1) {
 913                 return LDAP_NO_MEMORY;
 914         }
 915
 916         while ((rc == LDAP_SERVER_DOWN) && (attempts < SMBLDAP_NUM_RETRIES)) {
 917
 918                 if ((rc = smbldap_retry_open(ldap_state,&attempts)) != LDAP_SUCCESS)
 919                         continue;
 920
 921                 rc = ldap_search_s(ldap_state->ldap_struct, base, scope,
 922                                    utf8_filter, attrs, attrsonly, res);
 923         }
 924
 925         if (rc == LDAP_SERVER_DOWN) {
 926                 DEBUG(0,("%s: LDAP server is down!\n",FUNCTION_MACRO));
 927                 smbldap_close(ldap_state);
 928         }
 929
 930         ldap_state->last_use = time(NULL);
 931
 932         SAFE_FREE(utf8_filter);
 933         return rc;
 934 }
 935
 936 int smbldap_modify(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
 937 {
 938         int             rc = LDAP_SERVER_DOWN;
 939         int             attempts = 0;
 940         char           *utf8_dn;
 941
 942         SMB_ASSERT(ldap_state);
 943
 944         if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
 945                 return LDAP_NO_MEMORY;
 946         }
 947
 948         while ((rc == LDAP_SERVER_DOWN) && (attempts < SMBLDAP_NUM_RETRIES)) {
 949
 950                 if ((rc = smbldap_retry_open(ldap_state,&attempts)) != LDAP_SUCCESS)
 951                         continue;
 952
 953                 rc = ldap_modify_s(ldap_state->ldap_struct, utf8_dn, attrs);
 954         }
 955
 956         if (rc == LDAP_SERVER_DOWN) {
 957                 DEBUG(0,("%s: LDAP server is down!\n",FUNCTION_MACRO));
 958                 smbldap_close(ldap_state);
 959         }
 960
 961         ldap_state->last_use = time(NULL);
 962
 963         SAFE_FREE(utf8_dn);
 964         return rc;
 965 }
 966
 967 int smbldap_add(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
 968 {
 969         int             rc = LDAP_SERVER_DOWN;
 970         int             attempts = 0;
 971         char           *utf8_dn;
 972
 973         SMB_ASSERT(ldap_state);
 974
 975         if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
 976                 return LDAP_NO_MEMORY;
 977         }
 978
 979         while ((rc == LDAP_SERVER_DOWN) && (attempts < SMBLDAP_NUM_RETRIES)) {
 980
 981                 if ((rc = smbldap_retry_open(ldap_state,&attempts)) != LDAP_SUCCESS)
 982                         continue;
 983
 984                 rc = ldap_add_s(ldap_state->ldap_struct, utf8_dn, attrs);
 985         }
 986
 987         if (rc == LDAP_SERVER_DOWN) {
 988                 DEBUG(0,("%s: LDAP server is down!\n",FUNCTION_MACRO));
 989                 smbldap_close(ldap_state);
 990         }
 991
 992         ldap_state->last_use = time(NULL);
 993
 994         SAFE_FREE(utf8_dn);
 995         return rc;
 996 }
 997
 998 int smbldap_delete(struct smbldap_state *ldap_state, const char *dn)
 999 {
1000         int             rc = LDAP_SERVER_DOWN;
1001         int             attempts = 0;
1002         char           *utf8_dn;
1003
1004         SMB_ASSERT(ldap_state);
1005
1006         if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1007                 return LDAP_NO_MEMORY;
1008         }
1009
1010         while ((rc == LDAP_SERVER_DOWN) && (attempts < SMBLDAP_NUM_RETRIES)) {
1011
1012                 if ((rc = smbldap_retry_open(ldap_state,&attempts)) != LDAP_SUCCESS)
1013                         continue;
1014
1015                 rc = ldap_delete_s(ldap_state->ldap_struct, utf8_dn);
1016         }
1017
1018         if (rc == LDAP_SERVER_DOWN) {
1019                 DEBUG(0,("%s: LDAP server is down!\n",FUNCTION_MACRO));
1020                 smbldap_close(ldap_state);
1021         }
1022
1023         ldap_state->last_use = time(NULL);
1024
1025         SAFE_FREE(utf8_dn);
1026         return rc;
1027 }
1028
1029 int smbldap_extended_operation(struct smbldap_state *ldap_state,
1030                                LDAP_CONST char *reqoid, struct berval *reqdata,
1031                                LDAPControl **serverctrls, LDAPControl **clientctrls,
1032                                char **retoidp, struct berval **retdatap)
1033 {
1034         int             rc = LDAP_SERVER_DOWN;
1035         int             attempts = 0;
1036
1037         if (!ldap_state)
1038                 return (-1);
1039
1040         while ((rc == LDAP_SERVER_DOWN) && (attempts < SMBLDAP_NUM_RETRIES)) {
1041
1042                 if ((rc = smbldap_retry_open(ldap_state,&attempts)) != LDAP_SUCCESS)
1043                         continue;
1044
1045                 rc = ldap_extended_operation_s(ldap_state->ldap_struct, reqoid, reqdata,
1046                                                serverctrls, clientctrls, retoidp, retdatap);
1047         }
1048
1049         if (rc == LDAP_SERVER_DOWN) {
1050                 DEBUG(0,("%s: LDAP server is down!\n",FUNCTION_MACRO));
1051                 smbldap_close(ldap_state);
1052         }
1053
1054         ldap_state->last_use = time(NULL);
1055
1056         return rc;
1057 }
1058
1059 /*******************************************************************
1060  run the search by name.
1061 ******************************************************************/
1062 int smbldap_search_suffix (struct smbldap_state *ldap_state, const char *filter,
1063                            char **search_attr, LDAPMessage ** result)
1064 {
1065         int scope = LDAP_SCOPE_SUBTREE;
1066         int rc;
1067
1068         DEBUG(2, ("smbldap_search_suffix: searching for:[%s]\n", filter));
1069
1070         rc = smbldap_search(ldap_state, lp_ldap_suffix(), scope, filter, search_attr, 0, result);
1071
1072         if (rc != LDAP_SUCCESS) {
1073                 char *ld_error = NULL;
1074                 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
1075                                 &ld_error);
1076                 DEBUG(0,("smbldap_search_suffix: Problem during the LDAP search: %s (%s)\n",
1077                         ld_error?ld_error:"(unknown)", ldap_err2string (rc)));
1078                 DEBUG(3,("smbldap_search_suffix: Query was: %s, %s\n", lp_ldap_suffix(),
1079                         filter));
1080                 SAFE_FREE(ld_error);
1081         }
1082
1083         return rc;
1084 }
1085
1086 static void smbldap_idle_fn(void **data, time_t *interval, time_t now)
1087 {
1088         struct smbldap_state *state = (struct smbldap_state *)(*data);
1089
1090         if (state->ldap_struct == NULL) {
1091                 DEBUG(10,("ldap connection not connected...\n"));
1092                 return;
1093         }
1094
1095         if ((state->last_use+SMBLDAP_IDLE_TIME) > now) {
1096                 DEBUG(10,("ldap connection not idle...\n"));
1097                 return;
1098         }
1099
1100         DEBUG(7,("ldap connection idle...closing connection\n"));
1101         smbldap_close(state);
1102 }
1103
1104 /**********************************************************************
1105  Housekeeping
1106  *********************************************************************/
1107
1108 void smbldap_free_struct(struct smbldap_state **ldap_state)
1109 {
1110         smbldap_close(*ldap_state);
1111
1112         if ((*ldap_state)->bind_secret) {
1113                 memset((*ldap_state)->bind_secret, '\0', strlen((*ldap_state)->bind_secret));
1114         }
1115
1116         SAFE_FREE((*ldap_state)->bind_dn);
1117         SAFE_FREE((*ldap_state)->bind_secret);
1118
1119         smb_unregister_idle_event((*ldap_state)->event_id);
1120
1121         *ldap_state = NULL;
1122
1123         /* No need to free any further, as it is talloc()ed */
1124 }
1125
1126
1127 /**********************************************************************
1128  Intitalise the 'general' ldap structures, on which ldap operations may be conducted
1129  *********************************************************************/
1130
1131 NTSTATUS smbldap_init(TALLOC_CTX *mem_ctx, const char *location, struct smbldap_state **smbldap_state)
1132 {
1133         *smbldap_state = talloc_zero(mem_ctx, sizeof(**smbldap_state));
1134         if (!*smbldap_state) {
1135                 DEBUG(0, ("talloc() failed for ldapsam private_data!\n"));
1136                 return NT_STATUS_NO_MEMORY;
1137         }
1138
1139         if (location) {
1140                 (*smbldap_state)->uri = talloc_strdup(mem_ctx, location);
1141         } else {
1142                 (*smbldap_state)->uri = "ldap://localhost";
1143         }
1144
1145         (*smbldap_state)->event_id =
1146                 smb_register_idle_event(smbldap_idle_fn, (void *)(*smbldap_state),
1147                                         SMBLDAP_IDLE_TIME);
1148
1149         if ((*smbldap_state)->event_id == SMB_EVENT_ID_INVALID) {
1150                 DEBUG(0,("Failed to register LDAP idle event!\n"));
1151                 return NT_STATUS_INVALID_HANDLE;
1152         }
1153
1154         return NT_STATUS_OK;
1155 }
1156
1157 /**********************************************************************
1158  Add the sambaDomain to LDAP, so we don't have to search for this stuff
1159  again.  This is a once-add operation for now.
1160
1161  TODO:  Add other attributes, and allow modification.
1162 *********************************************************************/
1163 static NTSTATUS add_new_domain_info(struct smbldap_state *ldap_state,
1164                                     const char *domain_name)
1165 {
1166         fstring sid_string;
1167         fstring algorithmic_rid_base_string;
1168         pstring filter, dn;
1169         LDAPMod **mods = NULL;
1170         int rc;
1171         int ldap_op;
1172         LDAPMessage *result = NULL;
1173         int num_result;
1174         char **attr_list;
1175         uid_t u_low, u_high;
1176         gid_t g_low, g_high;
1177         uint32 rid_low, rid_high;
1178
1179         slprintf (filter, sizeof (filter) - 1, "(&(%s=%s)(objectclass=%s))",
1180                   get_attr_key2string(dominfo_attr_list, LDAP_ATTR_DOMAIN),
1181                   domain_name, LDAP_OBJ_DOMINFO);
1182
1183         attr_list = get_attr_list( dominfo_attr_list );
1184         rc = smbldap_search_suffix(ldap_state, filter, attr_list, &result);
1185         free_attr_list( attr_list );
1186
1187         if (rc != LDAP_SUCCESS) {
1188                 return NT_STATUS_UNSUCCESSFUL;
1189         }
1190
1191         num_result = ldap_count_entries(ldap_state->ldap_struct, result);
1192
1193         if (num_result > 1) {
1194                 DEBUG (0, ("More than domain with that name exists: bailing out!\n"));
1195                 ldap_msgfree(result);
1196                 return NT_STATUS_UNSUCCESSFUL;
1197         }
1198
1199         /* Check if we need to add an entry */
1200         DEBUG(3,("Adding new domain\n"));
1201         ldap_op = LDAP_MOD_ADD;
1202
1203         pstr_sprintf(dn, "%s=%s,%s", get_attr_key2string(dominfo_attr_list, LDAP_ATTR_DOMAIN),
1204                 domain_name, lp_ldap_suffix());
1205
1206         /* Free original search */
1207         ldap_msgfree(result);
1208
1209         /* make the changes - the entry *must* not already have samba attributes */
1210         smbldap_set_mod(&mods, LDAP_MOD_ADD, get_attr_key2string(dominfo_attr_list, LDAP_ATTR_DOMAIN),
1211                 domain_name);
1212
1213         /* If we don't have an entry, then ask secrets.tdb for what it thinks.
1214            It may choose to make it up */
1215
1216         sid_to_string(sid_string, get_global_sam_sid());
1217         smbldap_set_mod(&mods, LDAP_MOD_ADD, get_attr_key2string(dominfo_attr_list, LDAP_ATTR_DOM_SID), sid_string);
1218
1219         slprintf(algorithmic_rid_base_string, sizeof(algorithmic_rid_base_string) - 1, "%i", algorithmic_rid_base());
1220         smbldap_set_mod(&mods, LDAP_MOD_ADD, get_attr_key2string(dominfo_attr_list, LDAP_ATTR_ALGORITHMIC_RID_BASE),
1221                         algorithmic_rid_base_string);
1222         smbldap_set_mod(&mods, LDAP_MOD_ADD, "objectclass", LDAP_OBJ_DOMINFO);
1223
1224         /* add the sambaNext[User|Group]Rid attributes if the idmap ranges are set.
1225            TODO: fix all the places where the line between idmap and normal operations
1226            needed by smbd gets fuzzy   --jerry 2003-08-11                              */
1227
1228         if ( lp_idmap_uid(&u_low, &u_high) && lp_idmap_gid(&g_low, &g_high)
1229                 && get_free_rid_range(&rid_low, &rid_high) )
1230         {
1231                 fstring rid_str;
1232
1233                 fstr_sprintf( rid_str, "%i", rid_high|USER_RID_TYPE );
1234                 DEBUG(10,("setting next available user rid [%s]\n", rid_str));
1235                 smbldap_set_mod(&mods, LDAP_MOD_ADD,
1236                         get_attr_key2string(dominfo_attr_list, LDAP_ATTR_NEXT_USERRID),
1237                         rid_str);
1238
1239                 fstr_sprintf( rid_str, "%i", rid_high|GROUP_RID_TYPE );
1240                 DEBUG(10,("setting next available group rid [%s]\n", rid_str));
1241                 smbldap_set_mod(&mods, LDAP_MOD_ADD,
1242                         get_attr_key2string(dominfo_attr_list, LDAP_ATTR_NEXT_GROUPRID),
1243                         rid_str);
1244
1245         }
1246
1247
1248         switch(ldap_op)
1249         {
1250         case LDAP_MOD_ADD:
1251                 rc = smbldap_add(ldap_state, dn, mods);
1252                 break;
1253         case LDAP_MOD_REPLACE:
1254                 rc = smbldap_modify(ldap_state, dn, mods);
1255                 break;
1256         default:
1257                 DEBUG(0,("Wrong LDAP operation type: %d!\n", ldap_op));
1258                 return NT_STATUS_INVALID_PARAMETER;
1259         }
1260
1261         if (rc!=LDAP_SUCCESS) {
1262                 char *ld_error = NULL;
1263                 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING, &ld_error);
1264                 DEBUG(1,("failed to %s domain dn= %s with: %s\n\t%s\n",
1265                        ldap_op == LDAP_MOD_ADD ? "add" : "modify",
1266                        dn, ldap_err2string(rc),
1267                        ld_error?ld_error:"unknown"));
1268                 SAFE_FREE(ld_error);
1269
1270                 ldap_mods_free(mods, True);
1271                 return NT_STATUS_UNSUCCESSFUL;
1272         }
1273
1274         DEBUG(2,("added: domain = %s in the LDAP database\n", domain_name));
1275         ldap_mods_free(mods, True);
1276         return NT_STATUS_OK;
1277 }
1278
1279 /**********************************************************************
1280 Search for the domain info entry
1281 *********************************************************************/
1282 NTSTATUS smbldap_search_domain_info(struct smbldap_state *ldap_state,
1283                                     LDAPMessage ** result, const char *domain_name,
1284                                     BOOL try_add)
1285 {
1286         NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
1287         pstring filter;
1288         int rc;
1289         char **attr_list;
1290         int count;
1291
1292         pstr_sprintf(filter, "(&(objectClass=%s)(%s=%s))",
1293                 LDAP_OBJ_DOMINFO,
1294                 get_attr_key2string(dominfo_attr_list, LDAP_ATTR_DOMAIN),
1295                 domain_name);
1296
1297         DEBUG(2, ("Searching for:[%s]\n", filter));
1298
1299
1300         attr_list = get_attr_list( dominfo_attr_list );
1301         rc = smbldap_search_suffix(ldap_state, filter, attr_list , result);
1302         free_attr_list( attr_list );
1303
1304         if (rc != LDAP_SUCCESS) {
1305                 DEBUG(2,("Problem during LDAPsearch: %s\n", ldap_err2string (rc)));
1306                 DEBUG(2,("Query was: %s, %s\n", lp_ldap_suffix(), filter));
1307         } else if (ldap_count_entries(ldap_state->ldap_struct, *result) < 1) {
1308                 DEBUG(3, ("Got no domain info entries for domain\n"));
1309                 ldap_msgfree(*result);
1310                 *result = NULL;
1311                 if (try_add && NT_STATUS_IS_OK(ret = add_new_domain_info(ldap_state, domain_name))) {
1312                         return smbldap_search_domain_info(ldap_state, result, domain_name, False);
1313                 }
1314                 else {
1315                         DEBUG(0, ("Adding domain info for %s failed with %s\n",
1316                                 domain_name, nt_errstr(ret)));
1317                         return ret;
1318                 }
1319         } else if ((count = ldap_count_entries(ldap_state->ldap_struct, *result)) > 1) {
1320                 DEBUG(0, ("Got too many (%d) domain info entries for domain %s\n",
1321                           count, domain_name));
1322                 ldap_msgfree(*result);
1323                 *result = NULL;
1324                 return ret;
1325         } else {
1326                 return NT_STATUS_OK;
1327         }
1328
1329         return ret;
1330 }
1331
1332 /*******************************************************************
1333  Return a copy of the DN for a LDAPMessage. Convert from utf8 to CH_UNIX.
1334 ********************************************************************/
1335
1336 char *smbldap_get_dn(LDAP *ld, LDAPMessage *entry)
1337 {
1338         char *utf8_dn, *unix_dn;
1339
1340         utf8_dn = ldap_get_dn(ld, entry);
1341         if (!utf8_dn) {
1342                 DEBUG (5, ("smbldap_get_dn: ldap_get_dn failed\n"));
1343                 return NULL;
1344         }
1345         if (pull_utf8_allocate((void **) &unix_dn, utf8_dn) == (size_t)-1) {
1346                 DEBUG (0, ("smbldap_get_dn: String conversion failure utf8 [%s]\n", utf8_dn));
1347                 return NULL;
1348         }
1349         ldap_memfree(utf8_dn);
1350         return unix_dn;
1351 }