s3-printing: Fix vlp testprinter application.
[ira/wip.git] / source3 / lib / smbldap.c
1 /* 
2    Unix SMB/CIFS implementation.
3    LDAP protocol helper functions for SAMBA
4    Copyright (C) Jean Fran├žois Micouleau       1998
5    Copyright (C) Gerald Carter                  2001-2003
6    Copyright (C) Shahms King                    2001
7    Copyright (C) Andrew Bartlett                2002-2003
8    Copyright (C) Stefan (metze) Metzmacher      2002-2003
9     
10    This program is free software; you can redistribute it and/or modify
11    it under the terms of the GNU General Public License as published by
12    the Free Software Foundation; either version 3 of the License, or
13    (at your option) any later version.
14    
15    This program is distributed in the hope that it will be useful,
16    but WITHOUT ANY WARRANTY; without even the implied warranty of
17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18    GNU General Public License for more details.
19    
20    You should have received a copy of the GNU General Public License
21    along with this program.  If not, see <http://www.gnu.org/licenses/>.
22    
23 */
24
25 #include "includes.h"
26 #include "smbldap.h"
27
28 #ifndef LDAP_OPT_SUCCESS
29 #define LDAP_OPT_SUCCESS 0
30 #endif
31
32 /* Try not to hit the up or down server forever */
33
34 #define SMBLDAP_DONT_PING_TIME 10       /* ping only all 10 seconds */
35 #define SMBLDAP_NUM_RETRIES 8           /* retry only 8 times */
36
37 #define SMBLDAP_IDLE_TIME 150           /* After 2.5 minutes disconnect */
38
39
40 /* attributes used by Samba 2.2 */
41
42 ATTRIB_MAP_ENTRY attrib_map_v22[] = {
43         { LDAP_ATTR_UID,                "uid"           },
44         { LDAP_ATTR_UIDNUMBER,          LDAP_ATTRIBUTE_UIDNUMBER},
45         { LDAP_ATTR_GIDNUMBER,          LDAP_ATTRIBUTE_GIDNUMBER},
46         { LDAP_ATTR_UNIX_HOME,          "homeDirectory" },
47         { LDAP_ATTR_PWD_LAST_SET,       "pwdLastSet"    },
48         { LDAP_ATTR_PWD_CAN_CHANGE,     "pwdCanChange"  },
49         { LDAP_ATTR_PWD_MUST_CHANGE,    "pwdMustChange" },
50         { LDAP_ATTR_LOGON_TIME,         "logonTime"     },
51         { LDAP_ATTR_LOGOFF_TIME,        "logoffTime"    },
52         { LDAP_ATTR_KICKOFF_TIME,       "kickoffTime"   },
53         { LDAP_ATTR_CN,                 "cn"            },
54         { LDAP_ATTR_SN,                 "sn"            },
55         { LDAP_ATTR_DISPLAY_NAME,       "displayName"   },
56         { LDAP_ATTR_HOME_PATH,          "smbHome"       },
57         { LDAP_ATTR_HOME_DRIVE,         "homeDrive"     },
58         { LDAP_ATTR_LOGON_SCRIPT,       "scriptPath"    },
59         { LDAP_ATTR_PROFILE_PATH,       "profilePath"   },
60         { LDAP_ATTR_DESC,               "description"   },
61         { LDAP_ATTR_USER_WKS,           "userWorkstations"},
62         { LDAP_ATTR_USER_RID,           "rid"           },
63         { LDAP_ATTR_PRIMARY_GROUP_RID,  "primaryGroupID"},
64         { LDAP_ATTR_LMPW,               "lmPassword"    },
65         { LDAP_ATTR_NTPW,               "ntPassword"    },
66         { LDAP_ATTR_DOMAIN,             "domain"        },
67         { LDAP_ATTR_OBJCLASS,           "objectClass"   },
68         { LDAP_ATTR_ACB_INFO,           "acctFlags"     },
69         { LDAP_ATTR_MOD_TIMESTAMP,      "modifyTimestamp"       },
70         { LDAP_ATTR_LIST_END,           NULL            }
71 };
72
73 ATTRIB_MAP_ENTRY attrib_map_to_delete_v22[] = {
74         { LDAP_ATTR_PWD_LAST_SET,       "pwdLastSet"    },
75         { LDAP_ATTR_PWD_CAN_CHANGE,     "pwdCanChange"  },
76         { LDAP_ATTR_PWD_MUST_CHANGE,    "pwdMustChange" },
77         { LDAP_ATTR_LOGON_TIME,         "logonTime"     },
78         { LDAP_ATTR_LOGOFF_TIME,        "logoffTime"    },
79         { LDAP_ATTR_KICKOFF_TIME,       "kickoffTime"   },
80         { LDAP_ATTR_DISPLAY_NAME,       "displayName"   },
81         { LDAP_ATTR_HOME_PATH,          "smbHome"       },
82         { LDAP_ATTR_HOME_DRIVE,         "homeDrives"    },
83         { LDAP_ATTR_LOGON_SCRIPT,       "scriptPath"    },
84         { LDAP_ATTR_PROFILE_PATH,       "profilePath"   },
85         { LDAP_ATTR_USER_WKS,           "userWorkstations"},
86         { LDAP_ATTR_USER_RID,           "rid"           },
87         { LDAP_ATTR_PRIMARY_GROUP_RID,  "primaryGroupID"},
88         { LDAP_ATTR_LMPW,               "lmPassword"    },
89         { LDAP_ATTR_NTPW,               "ntPassword"    },
90         { LDAP_ATTR_DOMAIN,             "domain"        },
91         { LDAP_ATTR_ACB_INFO,           "acctFlags"     },
92         { LDAP_ATTR_LIST_END,           NULL            }
93 };
94
95 /* attributes used by Samba 3.0's sambaSamAccount */
96
97 ATTRIB_MAP_ENTRY attrib_map_v30[] = {
98         { LDAP_ATTR_UID,                "uid"                   },
99         { LDAP_ATTR_UIDNUMBER,          LDAP_ATTRIBUTE_UIDNUMBER},
100         { LDAP_ATTR_GIDNUMBER,          LDAP_ATTRIBUTE_GIDNUMBER},
101         { LDAP_ATTR_UNIX_HOME,          "homeDirectory"         },
102         { LDAP_ATTR_PWD_LAST_SET,       "sambaPwdLastSet"       },
103         { LDAP_ATTR_PWD_CAN_CHANGE,     "sambaPwdCanChange"     },
104         { LDAP_ATTR_PWD_MUST_CHANGE,    "sambaPwdMustChange"    },
105         { LDAP_ATTR_LOGON_TIME,         "sambaLogonTime"        },
106         { LDAP_ATTR_LOGOFF_TIME,        "sambaLogoffTime"       },
107         { LDAP_ATTR_KICKOFF_TIME,       "sambaKickoffTime"      },
108         { LDAP_ATTR_CN,                 "cn"                    },
109         { LDAP_ATTR_SN,                 "sn"                    },
110         { LDAP_ATTR_DISPLAY_NAME,       "displayName"           },
111         { LDAP_ATTR_HOME_DRIVE,         "sambaHomeDrive"        },
112         { LDAP_ATTR_HOME_PATH,          "sambaHomePath"         },
113         { LDAP_ATTR_LOGON_SCRIPT,       "sambaLogonScript"      },
114         { LDAP_ATTR_PROFILE_PATH,       "sambaProfilePath"      },
115         { LDAP_ATTR_DESC,               "description"           },
116         { LDAP_ATTR_USER_WKS,           "sambaUserWorkstations" },
117         { LDAP_ATTR_USER_SID,           LDAP_ATTRIBUTE_SID      },
118         { LDAP_ATTR_PRIMARY_GROUP_SID,  "sambaPrimaryGroupSID"  },
119         { LDAP_ATTR_LMPW,               "sambaLMPassword"       },
120         { LDAP_ATTR_NTPW,               "sambaNTPassword"       },
121         { LDAP_ATTR_DOMAIN,             "sambaDomainName"       },
122         { LDAP_ATTR_OBJCLASS,           "objectClass"           },
123         { LDAP_ATTR_ACB_INFO,           "sambaAcctFlags"        },
124         { LDAP_ATTR_MUNGED_DIAL,        "sambaMungedDial"       },
125         { LDAP_ATTR_BAD_PASSWORD_COUNT, "sambaBadPasswordCount" },
126         { LDAP_ATTR_BAD_PASSWORD_TIME,  "sambaBadPasswordTime"  },
127         { LDAP_ATTR_PWD_HISTORY,        "sambaPasswordHistory"  },
128         { LDAP_ATTR_MOD_TIMESTAMP,      "modifyTimestamp"       },
129         { LDAP_ATTR_LOGON_HOURS,        "sambaLogonHours"       },
130         { LDAP_ATTR_LIST_END,           NULL                    }
131 };
132
133 ATTRIB_MAP_ENTRY attrib_map_to_delete_v30[] = {
134         { LDAP_ATTR_PWD_LAST_SET,       "sambaPwdLastSet"       },
135         { LDAP_ATTR_PWD_CAN_CHANGE,     "sambaPwdCanChange"     },
136         { LDAP_ATTR_PWD_MUST_CHANGE,    "sambaPwdMustChange"    },
137         { LDAP_ATTR_LOGON_TIME,         "sambaLogonTime"        },
138         { LDAP_ATTR_LOGOFF_TIME,        "sambaLogoffTime"       },
139         { LDAP_ATTR_KICKOFF_TIME,       "sambaKickoffTime"      },
140         { LDAP_ATTR_DISPLAY_NAME,       "displayName"           },
141         { LDAP_ATTR_HOME_DRIVE,         "sambaHomeDrive"        },
142         { LDAP_ATTR_HOME_PATH,          "sambaHomePath"         },
143         { LDAP_ATTR_LOGON_SCRIPT,       "sambaLogonScript"      },
144         { LDAP_ATTR_PROFILE_PATH,       "sambaProfilePath"      },
145         { LDAP_ATTR_USER_WKS,           "sambaUserWorkstations" },
146         { LDAP_ATTR_USER_SID,           LDAP_ATTRIBUTE_SID      },
147         { LDAP_ATTR_PRIMARY_GROUP_SID,  "sambaPrimaryGroupSID"  },
148         { LDAP_ATTR_LMPW,               "sambaLMPassword"       },
149         { LDAP_ATTR_NTPW,               "sambaNTPassword"       },
150         { LDAP_ATTR_DOMAIN,             "sambaDomainName"       },
151         { LDAP_ATTR_ACB_INFO,           "sambaAcctFlags"        },
152         { LDAP_ATTR_MUNGED_DIAL,        "sambaMungedDial"       },
153         { LDAP_ATTR_BAD_PASSWORD_COUNT, "sambaBadPasswordCount" },
154         { LDAP_ATTR_BAD_PASSWORD_TIME,  "sambaBadPasswordTime"  },
155         { LDAP_ATTR_PWD_HISTORY,        "sambaPasswordHistory"  },
156         { LDAP_ATTR_LOGON_HOURS,        "sambaLogonHours"       },
157         { LDAP_ATTR_LIST_END,           NULL                    }
158 };
159
160 /* attributes used for allocating RIDs */
161
162 ATTRIB_MAP_ENTRY dominfo_attr_list[] = {
163         { LDAP_ATTR_DOMAIN,             "sambaDomainName"       },
164         { LDAP_ATTR_NEXT_RID,           "sambaNextRid"          },
165         { LDAP_ATTR_NEXT_USERRID,       "sambaNextUserRid"      },
166         { LDAP_ATTR_NEXT_GROUPRID,      "sambaNextGroupRid"     },
167         { LDAP_ATTR_DOM_SID,            LDAP_ATTRIBUTE_SID      },
168         { LDAP_ATTR_ALGORITHMIC_RID_BASE,"sambaAlgorithmicRidBase"},
169         { LDAP_ATTR_OBJCLASS,           "objectClass"           },
170         { LDAP_ATTR_LIST_END,           NULL                    },
171 };
172
173 /* Samba 3.0 group mapping attributes */
174
175 ATTRIB_MAP_ENTRY groupmap_attr_list[] = {
176         { LDAP_ATTR_GIDNUMBER,          LDAP_ATTRIBUTE_GIDNUMBER},
177         { LDAP_ATTR_GROUP_SID,          LDAP_ATTRIBUTE_SID      },
178         { LDAP_ATTR_GROUP_TYPE,         "sambaGroupType"        },
179         { LDAP_ATTR_SID_LIST,           "sambaSIDList"          },
180         { LDAP_ATTR_DESC,               "description"           },
181         { LDAP_ATTR_DISPLAY_NAME,       "displayName"           },
182         { LDAP_ATTR_CN,                 "cn"                    },
183         { LDAP_ATTR_OBJCLASS,           "objectClass"           },
184         { LDAP_ATTR_LIST_END,           NULL                    }       
185 };
186
187 ATTRIB_MAP_ENTRY groupmap_attr_list_to_delete[] = {
188         { LDAP_ATTR_GROUP_SID,          LDAP_ATTRIBUTE_SID      },
189         { LDAP_ATTR_GROUP_TYPE,         "sambaGroupType"        },
190         { LDAP_ATTR_DESC,               "description"           },
191         { LDAP_ATTR_DISPLAY_NAME,       "displayName"           },
192         { LDAP_ATTR_SID_LIST,           "sambaSIDList"          },
193         { LDAP_ATTR_LIST_END,           NULL                    }       
194 };
195
196 /* idmap_ldap sambaUnixIdPool */
197
198 ATTRIB_MAP_ENTRY idpool_attr_list[] = {
199         { LDAP_ATTR_UIDNUMBER,          LDAP_ATTRIBUTE_UIDNUMBER},
200         { LDAP_ATTR_GIDNUMBER,          LDAP_ATTRIBUTE_GIDNUMBER},
201         { LDAP_ATTR_OBJCLASS,           "objectClass"           },
202         { LDAP_ATTR_LIST_END,           NULL                    }       
203 };
204
205 ATTRIB_MAP_ENTRY sidmap_attr_list[] = {
206         { LDAP_ATTR_SID,                LDAP_ATTRIBUTE_SID      },
207         { LDAP_ATTR_UIDNUMBER,          LDAP_ATTRIBUTE_UIDNUMBER},
208         { LDAP_ATTR_GIDNUMBER,          LDAP_ATTRIBUTE_GIDNUMBER},
209         { LDAP_ATTR_OBJCLASS,           "objectClass"           },
210         { LDAP_ATTR_LIST_END,           NULL                    }       
211 };
212
213 /**********************************************************************
214  perform a simple table lookup and return the attribute name 
215  **********************************************************************/
216  
217  const char* get_attr_key2string( ATTRIB_MAP_ENTRY table[], int key )
218 {
219         int i = 0;
220         
221         while ( table[i].attrib != LDAP_ATTR_LIST_END ) {
222                 if ( table[i].attrib == key )
223                         return table[i].name;
224                 i++;
225         }
226         
227         return NULL;
228 }
229
230
231 /**********************************************************************
232  Return the list of attribute names from a mapping table
233  **********************************************************************/
234
235  const char** get_attr_list( TALLOC_CTX *mem_ctx, ATTRIB_MAP_ENTRY table[] )
236 {
237         const char **names;
238         int i = 0;
239         
240         while ( table[i].attrib != LDAP_ATTR_LIST_END )
241                 i++;
242         i++;
243
244         names = TALLOC_ARRAY( mem_ctx, const char*, i );
245         if ( !names ) {
246                 DEBUG(0,("get_attr_list: out of memory\n"));
247                 return NULL;
248         }
249
250         i = 0;
251         while ( table[i].attrib != LDAP_ATTR_LIST_END ) {
252                 names[i] = talloc_strdup( names, table[i].name );
253                 i++;
254         }
255         names[i] = NULL;
256         
257         return names;
258 }
259
260 /*******************************************************************
261  Search an attribute and return the first value found.
262 ******************************************************************/
263
264  bool smbldap_get_single_attribute (LDAP * ldap_struct, LDAPMessage * entry,
265                                     const char *attribute, char *value,
266                                     int max_len)
267 {
268         char **values;
269         
270         if ( !attribute )
271                 return False;
272                 
273         value[0] = '\0';
274
275         if ((values = ldap_get_values (ldap_struct, entry, attribute)) == NULL) {
276                 DEBUG (10, ("smbldap_get_single_attribute: [%s] = [<does not exist>]\n", attribute));
277                 
278                 return False;
279         }
280         
281         if (convert_string(CH_UTF8, CH_UNIX,values[0], -1, value, max_len, False) == (size_t)-1) {
282                 DEBUG(1, ("smbldap_get_single_attribute: string conversion of [%s] = [%s] failed!\n", 
283                           attribute, values[0]));
284                 ldap_value_free(values);
285                 return False;
286         }
287         
288         ldap_value_free(values);
289 #ifdef DEBUG_PASSWORDS
290         DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n", attribute, value));
291 #endif  
292         return True;
293 }
294
295  char * smbldap_talloc_single_attribute(LDAP *ldap_struct, LDAPMessage *entry,
296                                         const char *attribute,
297                                         TALLOC_CTX *mem_ctx)
298 {
299         char **values;
300         char *result;
301         size_t converted_size;
302
303         if (attribute == NULL) {
304                 return NULL;
305         }
306
307         values = ldap_get_values(ldap_struct, entry, attribute);
308
309         if (values == NULL) {
310                 DEBUG(10, ("attribute %s does not exist\n", attribute));
311                 return NULL;
312         }
313
314         if (ldap_count_values(values) != 1) {
315                 DEBUG(10, ("attribute %s has %d values, expected only one\n",
316                            attribute, ldap_count_values(values)));
317                 ldap_value_free(values);
318                 return NULL;
319         }
320
321         if (!pull_utf8_talloc(mem_ctx, &result, values[0], &converted_size)) {
322                 DEBUG(10, ("pull_utf8_talloc failed\n"));
323                 ldap_value_free(values);
324                 return NULL;
325         }
326
327         ldap_value_free(values);
328
329 #ifdef DEBUG_PASSWORDS
330         DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n",
331                      attribute, result));
332 #endif  
333         return result;
334 }
335
336  static int ldapmsg_destructor(LDAPMessage **result) {
337         ldap_msgfree(*result);
338         return 0;
339 }
340
341  void talloc_autofree_ldapmsg(TALLOC_CTX *mem_ctx, LDAPMessage *result)
342 {
343         LDAPMessage **handle;
344
345         if (result == NULL) {
346                 return;
347         }
348
349         handle = TALLOC_P(mem_ctx, LDAPMessage *);
350         SMB_ASSERT(handle != NULL);
351
352         *handle = result;
353         talloc_set_destructor(handle, ldapmsg_destructor);
354 }
355
356  static int ldapmod_destructor(LDAPMod ***mod) {
357         ldap_mods_free(*mod, True);
358         return 0;
359 }
360
361  void talloc_autofree_ldapmod(TALLOC_CTX *mem_ctx, LDAPMod **mod)
362 {
363         LDAPMod ***handle;
364
365         if (mod == NULL) {
366                 return;
367         }
368
369         handle = TALLOC_P(mem_ctx, LDAPMod **);
370         SMB_ASSERT(handle != NULL);
371
372         *handle = mod;
373         talloc_set_destructor(handle, ldapmod_destructor);
374 }
375
376 /************************************************************************
377  Routine to manage the LDAPMod structure array
378  manage memory used by the array, by each struct, and values
379  ***********************************************************************/
380
381  void smbldap_set_mod (LDAPMod *** modlist, int modop, const char *attribute, const char *value)
382 {
383         LDAPMod **mods;
384         int i;
385         int j;
386
387         mods = *modlist;
388
389         /* sanity checks on the mod values */
390
391         if (attribute == NULL || *attribute == '\0') {
392                 return; 
393         }
394
395 #if 0   /* commented out after discussion with abartlet.  Do not reenable.
396            left here so other do not re-add similar code   --jerry */
397         if (value == NULL || *value == '\0')
398                 return;
399 #endif
400
401         if (mods == NULL) {
402                 mods = SMB_MALLOC_P(LDAPMod *);
403                 if (mods == NULL) {
404                         smb_panic("smbldap_set_mod: out of memory!");
405                         /* notreached. */
406                 }
407                 mods[0] = NULL;
408         }
409
410         for (i = 0; mods[i] != NULL; ++i) {
411                 if (mods[i]->mod_op == modop && strequal(mods[i]->mod_type, attribute))
412                         break;
413         }
414
415         if (mods[i] == NULL) {
416                 mods = SMB_REALLOC_ARRAY (mods, LDAPMod *, i + 2);
417                 if (mods == NULL) {
418                         smb_panic("smbldap_set_mod: out of memory!");
419                         /* notreached. */
420                 }
421                 mods[i] = SMB_MALLOC_P(LDAPMod);
422                 if (mods[i] == NULL) {
423                         smb_panic("smbldap_set_mod: out of memory!");
424                         /* notreached. */
425                 }
426                 mods[i]->mod_op = modop;
427                 mods[i]->mod_values = NULL;
428                 mods[i]->mod_type = SMB_STRDUP(attribute);
429                 mods[i + 1] = NULL;
430         }
431
432         if (value != NULL) {
433                 char *utf8_value = NULL;
434                 size_t converted_size;
435
436                 j = 0;
437                 if (mods[i]->mod_values != NULL) {
438                         for (; mods[i]->mod_values[j] != NULL; j++);
439                 }
440                 mods[i]->mod_values = SMB_REALLOC_ARRAY(mods[i]->mod_values, char *, j + 2);
441                                                
442                 if (mods[i]->mod_values == NULL) {
443                         smb_panic("smbldap_set_mod: out of memory!");
444                         /* notreached. */
445                 }
446
447                 if (!push_utf8_talloc(talloc_tos(), &utf8_value, value, &converted_size)) {
448                         smb_panic("smbldap_set_mod: String conversion failure!");
449                         /* notreached. */
450                 }
451                 
452                 
453                 mods[i]->mod_values[j] = SMB_STRDUP(utf8_value);
454                 TALLOC_FREE(utf8_value);
455                 SMB_ASSERT(mods[i]->mod_values[j] != NULL);
456
457                 mods[i]->mod_values[j + 1] = NULL;
458         }
459         *modlist = mods;
460 }
461
462 /**********************************************************************
463   Set attribute to newval in LDAP, regardless of what value the
464   attribute had in LDAP before.
465 *********************************************************************/
466
467  void smbldap_make_mod(LDAP *ldap_struct, LDAPMessage *existing,
468                       LDAPMod ***mods,
469                       const char *attribute, const char *newval)
470 {
471         char oldval[2048]; /* current largest allowed value is mungeddial */
472         bool existed;
473
474         if (attribute == NULL) {
475                 /* This can actually happen for ldapsam_compat where we for
476                  * example don't have a password history */
477                 return;
478         }
479
480         if (existing != NULL) {
481                 existed = smbldap_get_single_attribute(ldap_struct, existing, attribute, oldval, sizeof(oldval));
482         } else {
483                 existed = False;
484                 *oldval = '\0';
485         }
486
487         /* all of our string attributes are case insensitive */
488         
489         if (existed && newval && (StrCaseCmp(oldval, newval) == 0)) {
490                 
491                 /* Believe it or not, but LDAP will deny a delete and
492                    an add at the same time if the values are the
493                    same... */
494                 DEBUG(10,("smbldap_make_mod: attribute |%s| not changed.\n", attribute));
495                 return;
496         }
497
498         if (existed) {
499                 /* There has been no value before, so don't delete it.
500                  * Here's a possible race: We might end up with
501                  * duplicate attributes */
502                 /* By deleting exactly the value we found in the entry this
503                  * should be race-free in the sense that the LDAP-Server will
504                  * deny the complete operation if somebody changed the
505                  * attribute behind our back. */
506                 /* This will also allow modifying single valued attributes 
507                  * in Novell NDS. In NDS you have to first remove attribute and then
508                  * you could add new value */
509                 
510                 DEBUG(10,("smbldap_make_mod: deleting attribute |%s| values |%s|\n", attribute, oldval));
511                 smbldap_set_mod(mods, LDAP_MOD_DELETE, attribute, oldval);
512         }
513
514         /* Regardless of the real operation (add or modify)
515            we add the new value here. We rely on deleting
516            the old value, should it exist. */
517
518         if ((newval != NULL) && (strlen(newval) > 0)) {
519                 DEBUG(10,("smbldap_make_mod: adding attribute |%s| value |%s|\n", attribute, newval));
520                 smbldap_set_mod(mods, LDAP_MOD_ADD, attribute, newval);
521         }
522 }
523
524 /**********************************************************************
525  Some varients of the LDAP rebind code do not pass in the third 'arg' 
526  pointer to a void*, so we try and work around it by assuming that the 
527  value of the 'LDAP *' pointer is the same as the one we had passed in
528  **********************************************************************/
529
530 struct smbldap_state_lookup {
531         LDAP *ld;
532         struct smbldap_state *smbldap_state;
533         struct smbldap_state_lookup *prev, *next;
534 };
535
536 static struct smbldap_state_lookup *smbldap_state_lookup_list;
537
538 static struct smbldap_state *smbldap_find_state(LDAP *ld) 
539 {
540         struct smbldap_state_lookup *t;
541
542         for (t = smbldap_state_lookup_list; t; t = t->next) {
543                 if (t->ld == ld) {
544                         return t->smbldap_state;
545                 }
546         }
547         return NULL;
548 }
549
550 static void smbldap_delete_state(struct smbldap_state *smbldap_state) 
551 {
552         struct smbldap_state_lookup *t;
553
554         for (t = smbldap_state_lookup_list; t; t = t->next) {
555                 if (t->smbldap_state == smbldap_state) {
556                         DLIST_REMOVE(smbldap_state_lookup_list, t);
557                         SAFE_FREE(t);
558                         return;
559                 }
560         }
561 }
562
563 static void smbldap_store_state(LDAP *ld, struct smbldap_state *smbldap_state) 
564 {
565         struct smbldap_state *tmp_ldap_state;
566         struct smbldap_state_lookup *t;
567         
568         if ((tmp_ldap_state = smbldap_find_state(ld))) {
569                 SMB_ASSERT(tmp_ldap_state == smbldap_state);
570                 return;
571         }
572
573         t = SMB_XMALLOC_P(struct smbldap_state_lookup);
574         ZERO_STRUCTP(t);
575         
576         DLIST_ADD_END(smbldap_state_lookup_list, t, struct smbldap_state_lookup *);
577         t->ld = ld;
578         t->smbldap_state = smbldap_state;
579 }
580
581 /********************************************************************
582  start TLS on an existing LDAP connection
583 *******************************************************************/
584
585 int smb_ldap_start_tls(LDAP *ldap_struct, int version)
586
587 #ifdef LDAP_OPT_X_TLS
588         int rc;
589 #endif
590         
591         if (lp_ldap_ssl() != LDAP_SSL_START_TLS) {
592                 return LDAP_SUCCESS;
593         }
594         
595 #ifdef LDAP_OPT_X_TLS
596         if (version != LDAP_VERSION3) {
597                 DEBUG(0, ("Need LDAPv3 for Start TLS\n"));
598                 return LDAP_OPERATIONS_ERROR;
599         }
600
601         if ((rc = ldap_start_tls_s (ldap_struct, NULL, NULL)) != LDAP_SUCCESS)  {
602                 DEBUG(0,("Failed to issue the StartTLS instruction: %s\n",
603                          ldap_err2string(rc)));
604                 return rc;
605         }
606
607         DEBUG (3, ("StartTLS issued: using a TLS connection\n"));
608         return LDAP_SUCCESS;
609 #else
610         DEBUG(0,("StartTLS not supported by LDAP client libraries!\n"));
611         return LDAP_OPERATIONS_ERROR;
612 #endif
613 }
614
615 /********************************************************************
616  setup a connection to the LDAP server based on a uri
617 *******************************************************************/
618
619 int smb_ldap_setup_conn(LDAP **ldap_struct, const char *uri)
620 {
621         int rc;
622
623         DEBUG(10, ("smb_ldap_setup_connection: %s\n", uri));
624         
625 #ifdef HAVE_LDAP_INITIALIZE
626         
627         rc = ldap_initialize(ldap_struct, uri);
628         if (rc) {
629                 DEBUG(0, ("ldap_initialize: %s\n", ldap_err2string(rc)));
630         }
631
632         return rc;
633 #else 
634
635         /* Parse the string manually */
636
637         {
638                 int port = 0;
639                 fstring protocol;
640                 fstring host;
641                 SMB_ASSERT(sizeof(protocol)>10 && sizeof(host)>254);
642
643
644                 /* skip leading "URL:" (if any) */
645                 if ( strnequal( uri, "URL:", 4 ) ) {
646                         uri += 4;
647                 }
648                 
649                 sscanf(uri, "%10[^:]://%254[^:/]:%d", protocol, host, &port);
650                 
651                 if (port == 0) {
652                         if (strequal(protocol, "ldap")) {
653                                 port = LDAP_PORT;
654                         } else if (strequal(protocol, "ldaps")) {
655                                 port = LDAPS_PORT;
656                         } else {
657                                 DEBUG(0, ("unrecognised protocol (%s)!\n", protocol));
658                         }
659                 }
660                 
661                 if ((*ldap_struct = ldap_init(host, port)) == NULL)     {
662                         DEBUG(0, ("ldap_init failed !\n"));
663                         return LDAP_OPERATIONS_ERROR;
664                 }
665                 
666                 if (strequal(protocol, "ldaps")) {
667 #ifdef LDAP_OPT_X_TLS
668                         int tls = LDAP_OPT_X_TLS_HARD;
669                         if (ldap_set_option (*ldap_struct, LDAP_OPT_X_TLS, &tls) != LDAP_SUCCESS)
670                         {
671                                 DEBUG(0, ("Failed to setup a TLS session\n"));
672                         }
673                         
674                         DEBUG(3,("LDAPS option set...!\n"));
675 #else
676                         DEBUG(0,("smbldap_open_connection: Secure connection not supported by LDAP client libraries!\n"));
677                         return LDAP_OPERATIONS_ERROR;
678 #endif /* LDAP_OPT_X_TLS */
679                 }
680         }
681 #endif /* HAVE_LDAP_INITIALIZE */
682
683
684         /* now set connection timeout */
685 #ifdef LDAP_X_OPT_CONNECT_TIMEOUT /* Netscape */
686         {
687                 int ct = lp_ldap_connection_timeout()*1000;
688                 rc = ldap_set_option(*ldap_struct, LDAP_X_OPT_CONNECT_TIMEOUT, &ct);
689                 if (rc != LDAP_SUCCESS) {
690                         DEBUG(0,("Failed to setup an ldap connection timeout %d: %s\n",
691                                 ct, ldap_err2string(rc)));
692                 }
693         }
694 #elif defined (LDAP_OPT_NETWORK_TIMEOUT) /* OpenLDAP */
695         {
696                 struct timeval ct;
697                 ct.tv_usec = 0;
698                 ct.tv_sec = lp_ldap_connection_timeout();
699                 rc = ldap_set_option(*ldap_struct, LDAP_OPT_NETWORK_TIMEOUT, &ct);
700                 if (rc != LDAP_SUCCESS) {
701                         DEBUG(0,("Failed to setup an ldap connection timeout %d: %s\n",
702                                 (int)ct.tv_sec, ldap_err2string(rc)));
703                 }
704         }
705 #endif
706
707         return LDAP_SUCCESS;
708 }
709
710 /********************************************************************
711  try to upgrade to Version 3 LDAP if not already, in either case return current
712  version 
713  *******************************************************************/
714
715 int smb_ldap_upgrade_conn(LDAP *ldap_struct, int *new_version) 
716 {
717         int version;
718         int rc;
719         
720         /* assume the worst */
721         *new_version = LDAP_VERSION2;
722
723         rc = ldap_get_option(ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
724         if (rc) {
725                 return rc;
726         }
727
728         if (version == LDAP_VERSION3) {
729                 *new_version = LDAP_VERSION3;
730                 return LDAP_SUCCESS;
731         }
732
733         /* try upgrade */
734         version = LDAP_VERSION3;
735         rc = ldap_set_option (ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
736         if (rc) {
737                 return rc;
738         }
739                 
740         *new_version = LDAP_VERSION3;
741         return LDAP_SUCCESS;
742 }
743
744 /*******************************************************************
745  open a connection to the ldap server (just until the bind)
746  ******************************************************************/
747
748 int smb_ldap_setup_full_conn(LDAP **ldap_struct, const char *uri)
749 {
750         int rc, version;
751
752         rc = smb_ldap_setup_conn(ldap_struct, uri);
753         if (rc) {
754                 return rc;
755         }
756
757         rc = smb_ldap_upgrade_conn(*ldap_struct, &version);
758         if (rc) {
759                 return rc;
760         }
761
762         rc = smb_ldap_start_tls(*ldap_struct, version);
763         if (rc) {
764                 return rc;
765         }
766
767         return LDAP_SUCCESS;
768 }
769
770 /*******************************************************************
771  open a connection to the ldap server.
772 ******************************************************************/
773 static int smbldap_open_connection (struct smbldap_state *ldap_state)
774
775 {
776         int rc = LDAP_SUCCESS;
777         int version;
778         LDAP **ldap_struct = &ldap_state->ldap_struct;
779
780         rc = smb_ldap_setup_conn(ldap_struct, ldap_state->uri);
781         if (rc) {
782                 return rc;
783         }
784
785         /* Store the LDAP pointer in a lookup list */
786
787         smbldap_store_state(*ldap_struct, ldap_state);
788
789         /* Upgrade to LDAPv3 if possible */
790
791         rc = smb_ldap_upgrade_conn(*ldap_struct, &version);
792         if (rc) {
793                 return rc;
794         }
795
796         /* Start TLS if required */
797
798         rc = smb_ldap_start_tls(*ldap_struct, version);
799         if (rc) {
800                 return rc;
801         }
802         
803         DEBUG(2, ("smbldap_open_connection: connection opened\n"));
804         return rc;
805 }
806
807 /*******************************************************************
808  a rebind function for authenticated referrals
809  This version takes a void* that we can shove useful stuff in :-)
810 ******************************************************************/
811 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
812 #else
813 static int rebindproc_with_state  (LDAP * ld, char **whop, char **credp, 
814                                    int *methodp, int freeit, void *arg)
815 {
816         struct smbldap_state *ldap_state = arg;
817         
818         /** @TODO Should we be doing something to check what servers we rebind to?
819             Could we get a referral to a machine that we don't want to give our
820             username and password to? */
821         
822         if (freeit) {
823                 SAFE_FREE(*whop);
824                 if (*credp) {
825                         memset(*credp, '\0', strlen(*credp));
826                 }
827                 SAFE_FREE(*credp);
828         } else {
829                 DEBUG(5,("rebind_proc_with_state: Rebinding as \"%s\"\n", 
830                           ldap_state->bind_dn?ldap_state->bind_dn:"[Anonymous bind]"));
831
832                 if (ldap_state->anonymous) {
833                         *whop = NULL;
834                         *credp = NULL;
835                 } else {
836                         *whop = SMB_STRDUP(ldap_state->bind_dn);
837                         if (!*whop) {
838                                 return LDAP_NO_MEMORY;
839                         }
840                         *credp = SMB_STRDUP(ldap_state->bind_secret);
841                         if (!*credp) {
842                                 SAFE_FREE(*whop);
843                                 return LDAP_NO_MEMORY;
844                         }
845                 }
846                 *methodp = LDAP_AUTH_SIMPLE;
847         }
848
849         GetTimeOfDay(&ldap_state->last_rebind);
850                 
851         return 0;
852 }
853 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
854
855 /*******************************************************************
856  a rebind function for authenticated referrals
857  This version takes a void* that we can shove useful stuff in :-)
858  and actually does the connection.
859 ******************************************************************/
860 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
861 static int rebindproc_connect_with_state (LDAP *ldap_struct, 
862                                           LDAP_CONST char *url, 
863                                           ber_tag_t request,
864                                           ber_int_t msgid, void *arg)
865 {
866         struct smbldap_state *ldap_state =
867                 (struct smbldap_state *)arg;
868         int rc;
869         int version;
870
871         DEBUG(5,("rebindproc_connect_with_state: Rebinding to %s as \"%s\"\n", 
872                  url, ldap_state->bind_dn?ldap_state->bind_dn:"[Anonymous bind]"));
873
874         /* call START_TLS again (ldaps:// is handled by the OpenLDAP library
875          * itself) before rebinding to another LDAP server to avoid to expose
876          * our credentials. At least *try* to secure the connection - Guenther */
877
878         smb_ldap_upgrade_conn(ldap_struct, &version);
879         smb_ldap_start_tls(ldap_struct, version);
880
881         /** @TODO Should we be doing something to check what servers we rebind to?
882             Could we get a referral to a machine that we don't want to give our
883             username and password to? */
884
885         rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
886
887         /* only set the last rebind timestamp when we did rebind after a
888          * non-read LDAP operation. That way we avoid the replication sleep
889          * after a simple redirected search operation - Guenther */
890
891         switch (request) {
892
893                 case LDAP_REQ_MODIFY:
894                 case LDAP_REQ_ADD:
895                 case LDAP_REQ_DELETE:
896                 case LDAP_REQ_MODDN:
897                 case LDAP_REQ_EXTENDED:
898                         DEBUG(10,("rebindproc_connect_with_state: "
899                                 "setting last_rebind timestamp "
900                                 "(req: 0x%02x)\n", (unsigned int)request));
901                         GetTimeOfDay(&ldap_state->last_rebind);
902                         break;
903                 default:
904                         ZERO_STRUCT(ldap_state->last_rebind);
905                         break;
906         }
907
908         return rc;
909 }
910 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
911
912 /*******************************************************************
913  Add a rebind function for authenticated referrals
914 ******************************************************************/
915 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
916 #else
917 # if LDAP_SET_REBIND_PROC_ARGS == 2
918 static int rebindproc (LDAP *ldap_struct, char **whop, char **credp,
919                        int *method, int freeit )
920 {
921         struct smbldap_state *ldap_state = smbldap_find_state(ldap_struct);
922
923         return rebindproc_with_state(ldap_struct, whop, credp,
924                                      method, freeit, ldap_state);
925         
926 }
927 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
928 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
929
930 /*******************************************************************
931  a rebind function for authenticated referrals
932  this also does the connection, but no void*.
933 ******************************************************************/
934 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
935 # if LDAP_SET_REBIND_PROC_ARGS == 2
936 static int rebindproc_connect (LDAP * ld, LDAP_CONST char *url, int request,
937                                ber_int_t msgid)
938 {
939         struct smbldap_state *ldap_state = smbldap_find_state(ld);
940
941         return rebindproc_connect_with_state(ld, url, (ber_tag_t)request, msgid, 
942                                              ldap_state);
943 }
944 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
945 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
946
947 /*******************************************************************
948  connect to the ldap server under system privilege.
949 ******************************************************************/
950 static int smbldap_connect_system(struct smbldap_state *ldap_state, LDAP * ldap_struct)
951 {
952         int rc;
953         int version;
954
955         if (!ldap_state->anonymous && !ldap_state->bind_dn) {
956
957                 /* get the default dn and password only if they are not set already */
958                 if (!fetch_ldap_pw(&ldap_state->bind_dn, &ldap_state->bind_secret)) {
959                         DEBUG(0, ("ldap_connect_system: Failed to retrieve password from secrets.tdb\n"));
960                         return LDAP_INVALID_CREDENTIALS;
961                 }
962         }
963
964         /* removed the sasl_bind_s "EXTERNAL" stuff, as my testsuite 
965            (OpenLDAP) doesnt' seem to support it */
966            
967         DEBUG(10,("ldap_connect_system: Binding to ldap server %s as \"%s\"\n",
968                   ldap_state->uri, ldap_state->bind_dn));
969
970 #ifdef HAVE_LDAP_SET_REBIND_PROC
971 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
972 # if LDAP_SET_REBIND_PROC_ARGS == 2     
973         ldap_set_rebind_proc(ldap_struct, &rebindproc_connect); 
974 # endif
975 # if LDAP_SET_REBIND_PROC_ARGS == 3     
976         ldap_set_rebind_proc(ldap_struct, &rebindproc_connect_with_state, (void *)ldap_state);  
977 # endif
978 #else /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
979 # if LDAP_SET_REBIND_PROC_ARGS == 2     
980         ldap_set_rebind_proc(ldap_struct, &rebindproc); 
981 # endif
982 # if LDAP_SET_REBIND_PROC_ARGS == 3     
983         ldap_set_rebind_proc(ldap_struct, &rebindproc_with_state, (void *)ldap_state);  
984 # endif
985 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
986 #endif
987
988         rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
989
990         if (rc != LDAP_SUCCESS) {
991                 char *ld_error = NULL;
992                 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
993                                 &ld_error);
994                 DEBUG(ldap_state->num_failures ? 2 : 0,
995                       ("failed to bind to server %s with dn=\"%s\" Error: %s\n\t%s\n",
996                                ldap_state->uri,
997                                ldap_state->bind_dn ? ldap_state->bind_dn : "[Anonymous bind]",
998                                ldap_err2string(rc),
999                                ld_error ? ld_error : "(unknown)"));
1000                 SAFE_FREE(ld_error);
1001                 ldap_state->num_failures++;
1002                 return rc;
1003         }
1004
1005         ldap_state->num_failures = 0;
1006         ldap_state->paged_results = False;
1007
1008         ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
1009
1010         if (smbldap_has_control(ldap_state->ldap_struct, ADS_PAGE_CTL_OID) && version == 3) {
1011                 ldap_state->paged_results = True;
1012         }
1013
1014         DEBUG(3, ("ldap_connect_system: successful connection to the LDAP server\n"));
1015         DEBUGADD(10, ("ldap_connect_system: LDAP server %s support paged results\n", 
1016                 ldap_state->paged_results ? "does" : "does not"));
1017         return rc;
1018 }
1019
1020 static void smbldap_idle_fn(struct event_context *event_ctx,
1021                             struct timed_event *te,
1022                             struct timeval now,
1023                             void *private_data);
1024
1025 /**********************************************************************
1026  Connect to LDAP server (called before every ldap operation)
1027 *********************************************************************/
1028 static int smbldap_open(struct smbldap_state *ldap_state)
1029 {
1030         int rc, opt_rc;
1031         bool reopen = False;
1032         SMB_ASSERT(ldap_state);
1033
1034         if ((ldap_state->ldap_struct != NULL) && ((ldap_state->last_ping + SMBLDAP_DONT_PING_TIME) < time(NULL))) {
1035
1036 #ifdef HAVE_UNIXSOCKET
1037                 struct sockaddr_un addr;
1038 #else
1039                 struct sockaddr addr;
1040 #endif
1041                 socklen_t len = sizeof(addr);
1042                 int sd;
1043
1044                 opt_rc = ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_DESC, &sd);
1045                 if (opt_rc == 0 && (getpeername(sd, (struct sockaddr *) &addr, &len)) < 0 )
1046                         reopen = True;
1047
1048 #ifdef HAVE_UNIXSOCKET
1049                 if (opt_rc == 0 && addr.sun_family == AF_UNIX)
1050                         reopen = True;
1051 #endif
1052                 if (reopen) {
1053                         /* the other end has died. reopen. */
1054                         ldap_unbind(ldap_state->ldap_struct);
1055                         ldap_state->ldap_struct = NULL;
1056                         ldap_state->last_ping = (time_t)0;
1057                 } else {
1058                         ldap_state->last_ping = time(NULL);
1059                 } 
1060         }
1061
1062         if (ldap_state->ldap_struct != NULL) {
1063                 DEBUG(11,("smbldap_open: already connected to the LDAP server\n"));
1064                 return LDAP_SUCCESS;
1065         }
1066
1067         if ((rc = smbldap_open_connection(ldap_state))) {
1068                 return rc;
1069         }
1070
1071         if ((rc = smbldap_connect_system(ldap_state, ldap_state->ldap_struct))) {
1072                 ldap_unbind(ldap_state->ldap_struct);
1073                 ldap_state->ldap_struct = NULL;
1074                 return rc;
1075         }
1076
1077
1078         ldap_state->last_ping = time(NULL);
1079         ldap_state->pid = sys_getpid();
1080
1081         TALLOC_FREE(ldap_state->idle_event);
1082
1083         if (ldap_state->event_context != NULL) {
1084                 ldap_state->idle_event = event_add_timed(
1085                         ldap_state->event_context, NULL,
1086                         timeval_current_ofs(SMBLDAP_IDLE_TIME, 0),
1087                         smbldap_idle_fn, ldap_state);
1088         }
1089
1090         DEBUG(4,("The LDAP server is successfully connected\n"));
1091
1092         return LDAP_SUCCESS;
1093 }
1094
1095 /**********************************************************************
1096 Disconnect from LDAP server 
1097 *********************************************************************/
1098 static NTSTATUS smbldap_close(struct smbldap_state *ldap_state)
1099 {
1100         if (!ldap_state)
1101                 return NT_STATUS_INVALID_PARAMETER;
1102                 
1103         if (ldap_state->ldap_struct != NULL) {
1104                 ldap_unbind(ldap_state->ldap_struct);
1105                 ldap_state->ldap_struct = NULL;
1106         }
1107
1108         smbldap_delete_state(ldap_state);
1109         
1110         DEBUG(5,("The connection to the LDAP server was closed\n"));
1111         /* maybe free the results here --metze */
1112         
1113         return NT_STATUS_OK;
1114 }
1115
1116 static bool got_alarm;
1117
1118 static void (*old_handler)(int);
1119
1120 static void gotalarm_sig(int dummy)
1121 {
1122         got_alarm = True;
1123 }
1124
1125 static int another_ldap_try(struct smbldap_state *ldap_state, int *rc,
1126                             int *attempts, time_t endtime)
1127 {
1128         time_t now = time(NULL);
1129         int open_rc = LDAP_SERVER_DOWN;
1130
1131         if (*rc != LDAP_SERVER_DOWN)
1132                 goto no_next;
1133
1134         if (now >= endtime) {
1135                 smbldap_close(ldap_state);
1136                 *rc = LDAP_TIMEOUT;
1137                 goto no_next;
1138         }
1139
1140         if (*attempts == 0) {
1141                 got_alarm = False;
1142                 old_handler = CatchSignal(SIGALRM, gotalarm_sig);
1143                 alarm(endtime - now);
1144
1145                 if (ldap_state->pid != sys_getpid())
1146                         smbldap_close(ldap_state);
1147         }
1148
1149         while (1) {
1150
1151                 if (*attempts != 0)
1152                         smb_msleep(1000);
1153
1154                 *attempts += 1;
1155
1156                 open_rc = smbldap_open(ldap_state);
1157
1158                 if (open_rc == LDAP_SUCCESS) {
1159                         ldap_state->last_use = now;
1160                         return True;
1161                 }
1162
1163                 if (open_rc == LDAP_INSUFFICIENT_ACCESS) {
1164                         /* The fact that we are non-root or any other
1165                          * access-denied condition will not change in the next
1166                          * round of trying */
1167                         *rc = open_rc;
1168                         break;
1169                 }
1170
1171                 if (got_alarm) {
1172                         *rc = LDAP_TIMEOUT;
1173                         break;
1174                 }
1175
1176                 if (open_rc != LDAP_SUCCESS) {
1177                         DEBUG(1, ("Connection to LDAP server failed for the "
1178                                   "%d try!\n", *attempts));
1179                 }
1180         }
1181
1182  no_next:
1183         CatchSignal(SIGALRM, old_handler);
1184         alarm(0);
1185         ldap_state->last_use = now;
1186         return False;
1187 }
1188
1189 /*********************************************************************
1190  ********************************************************************/
1191
1192 static int smbldap_search_ext(struct smbldap_state *ldap_state,
1193                               const char *base, int scope, const char *filter, 
1194                               const char *attrs[], int attrsonly,
1195                               LDAPControl **sctrls, LDAPControl **cctrls, 
1196                               int sizelimit, LDAPMessage **res)
1197 {
1198         int             rc = LDAP_SERVER_DOWN;
1199         int             attempts = 0;
1200         char           *utf8_filter;
1201         time_t          endtime = time(NULL)+lp_ldap_timeout();
1202         struct          timeval timeout;
1203         size_t          converted_size;
1204
1205         SMB_ASSERT(ldap_state);
1206         
1207         DEBUG(5,("smbldap_search_ext: base => [%s], filter => [%s], "
1208                  "scope => [%d]\n", base, filter, scope));
1209
1210         if (ldap_state->last_rebind.tv_sec > 0) {
1211                 struct timeval  tval;
1212                 int64_t tdiff = 0;
1213                 int             sleep_time = 0;
1214
1215                 ZERO_STRUCT(tval);
1216                 GetTimeOfDay(&tval);
1217
1218                 tdiff = usec_time_diff(&tval, &ldap_state->last_rebind);
1219                 tdiff /= 1000; /* Convert to milliseconds. */
1220
1221                 sleep_time = lp_ldap_replication_sleep()-(int)tdiff;
1222                 sleep_time = MIN(sleep_time, MAX_LDAP_REPLICATION_SLEEP_TIME);
1223
1224                 if (sleep_time > 0) {
1225                         /* we wait for the LDAP replication */
1226                         DEBUG(5,("smbldap_search_ext: waiting %d milliseconds "
1227                                  "for LDAP replication.\n",sleep_time));
1228                         smb_msleep(sleep_time);
1229                         DEBUG(5,("smbldap_search_ext: go on!\n"));
1230                 }
1231                 ZERO_STRUCT(ldap_state->last_rebind);
1232         }
1233
1234         if (!push_utf8_talloc(talloc_tos(), &utf8_filter, filter, &converted_size)) {
1235                 return LDAP_NO_MEMORY;
1236         }
1237
1238         /* Setup timeout for the ldap_search_ext_s call - local and remote. */
1239         timeout.tv_sec = lp_ldap_timeout();
1240         timeout.tv_usec = 0;
1241
1242         /* Setup alarm timeout.... Do we need both of these ? JRA.
1243          * Yes, I think we do need both of these. The server timeout only
1244          * covers the case where the server's operation takes too long. It
1245          * does not cover the case where the request hangs on its way to the
1246          * server. The server side timeout is not strictly necessary, it's
1247          * just a bit more kind to the server. VL. */
1248
1249         got_alarm = 0;
1250         CatchSignal(SIGALRM, SIGNAL_CAST gotalarm_sig);
1251         alarm(lp_ldap_timeout());
1252         /* End setup timeout. */
1253
1254         while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1255                 rc = ldap_search_ext_s(ldap_state->ldap_struct, base, scope, 
1256                                        utf8_filter,
1257                                        CONST_DISCARD(char **, attrs),
1258                                        attrsonly, sctrls, cctrls, &timeout,
1259                                        sizelimit, res);
1260                 if (rc != LDAP_SUCCESS) {
1261                         char *ld_error = NULL;
1262                         int ld_errno;
1263
1264                         ldap_get_option(ldap_state->ldap_struct,
1265                                         LDAP_OPT_ERROR_NUMBER, &ld_errno);
1266
1267                         ldap_get_option(ldap_state->ldap_struct,
1268                                         LDAP_OPT_ERROR_STRING, &ld_error);
1269                         DEBUG(10, ("Failed search for base: %s, error: %d (%s) "
1270                                    "(%s)\n", base, ld_errno,
1271                                    ldap_err2string(rc),
1272                                    ld_error ? ld_error : "unknown"));
1273                         SAFE_FREE(ld_error);
1274
1275                         if (ld_errno == LDAP_SERVER_DOWN) {
1276                                 ldap_unbind(ldap_state->ldap_struct);
1277                                 ldap_state->ldap_struct = NULL;
1278                         }
1279                 }
1280         }
1281
1282         TALLOC_FREE(utf8_filter);
1283
1284         /* Teardown timeout. */
1285         CatchSignal(SIGALRM, SIGNAL_CAST SIG_IGN);
1286         alarm(0);
1287
1288         if (got_alarm != 0)
1289                 return LDAP_TIMELIMIT_EXCEEDED;
1290
1291         return rc;
1292 }
1293
1294 int smbldap_search(struct smbldap_state *ldap_state, 
1295                    const char *base, int scope, const char *filter, 
1296                    const char *attrs[], int attrsonly, 
1297                    LDAPMessage **res)
1298 {
1299         return smbldap_search_ext(ldap_state, base, scope, filter, attrs,
1300                                   attrsonly, NULL, NULL, LDAP_NO_LIMIT, res);
1301 }
1302
1303 int smbldap_search_paged(struct smbldap_state *ldap_state, 
1304                          const char *base, int scope, const char *filter, 
1305                          const char **attrs, int attrsonly, int pagesize,
1306                          LDAPMessage **res, void **cookie)
1307 {
1308         LDAPControl     pr;
1309         LDAPControl     **rcontrols;
1310         LDAPControl     *controls[2] = { NULL, NULL};
1311         BerElement      *cookie_be = NULL;
1312         struct berval   *cookie_bv = NULL;
1313         int             tmp = 0, i, rc;
1314         bool            critical = True;
1315
1316         *res = NULL;
1317
1318         DEBUG(3,("smbldap_search_paged: base => [%s], filter => [%s],"
1319                  "scope => [%d], pagesize => [%d]\n",
1320                  base, filter, scope, pagesize));
1321
1322         cookie_be = ber_alloc_t(LBER_USE_DER);
1323         if (cookie_be == NULL) {
1324                 DEBUG(0,("smbldap_create_page_control: ber_alloc_t returns "
1325                          "NULL\n"));
1326                 return LDAP_NO_MEMORY;
1327         }
1328
1329         /* construct cookie */
1330         if (*cookie != NULL) {
1331                 ber_printf(cookie_be, "{iO}", (ber_int_t) pagesize, *cookie);
1332                 ber_bvfree((struct berval *)*cookie); /* don't need it from last time */
1333                 *cookie = NULL;
1334         } else {
1335                 ber_printf(cookie_be, "{io}", (ber_int_t) pagesize, "", 0);
1336         }
1337         ber_flatten(cookie_be, &cookie_bv);
1338
1339         pr.ldctl_oid = CONST_DISCARD(char *, ADS_PAGE_CTL_OID);
1340         pr.ldctl_iscritical = (char) critical;
1341         pr.ldctl_value.bv_len = cookie_bv->bv_len;
1342         pr.ldctl_value.bv_val = cookie_bv->bv_val;
1343
1344         controls[0] = &pr;
1345         controls[1] = NULL;
1346
1347         rc = smbldap_search_ext(ldap_state, base, scope, filter, attrs, 
1348                                  0, controls, NULL, LDAP_NO_LIMIT, res);
1349
1350         ber_free(cookie_be, 1);
1351         ber_bvfree(cookie_bv);
1352
1353         if (rc != 0) {
1354                 DEBUG(3,("smbldap_search_paged: smbldap_search_ext(%s) "
1355                          "failed with [%s]\n", filter, ldap_err2string(rc)));
1356                 goto done;
1357         }
1358
1359         DEBUG(3,("smbldap_search_paged: search was successfull\n"));
1360
1361         rc = ldap_parse_result(ldap_state->ldap_struct, *res, NULL, NULL, 
1362                                NULL, NULL, &rcontrols,  0);
1363         if (rc != 0) {
1364                 DEBUG(3,("smbldap_search_paged: ldap_parse_result failed " \
1365                          "with [%s]\n", ldap_err2string(rc)));
1366                 goto done;
1367         }
1368
1369         if (rcontrols == NULL)
1370                 goto done;
1371
1372         for (i=0; rcontrols[i]; i++) {
1373
1374                 if (strcmp(ADS_PAGE_CTL_OID, rcontrols[i]->ldctl_oid) != 0)
1375                         continue;
1376
1377                 cookie_be = ber_init(&rcontrols[i]->ldctl_value);
1378                 ber_scanf(cookie_be,"{iO}", &tmp, &cookie_bv);
1379                 /* the berval is the cookie, but must be freed when it is all
1380                    done */
1381                 if (cookie_bv->bv_len)
1382                         *cookie=ber_bvdup(cookie_bv);
1383                 else
1384                         *cookie=NULL;
1385                 ber_bvfree(cookie_bv);
1386                 ber_free(cookie_be, 1);
1387                 break;
1388         }
1389         ldap_controls_free(rcontrols);
1390 done:   
1391         return rc;
1392 }
1393
1394 int smbldap_modify(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1395 {
1396         int             rc = LDAP_SERVER_DOWN;
1397         int             attempts = 0;
1398         char           *utf8_dn;
1399         time_t          endtime = time(NULL)+lp_ldap_timeout();
1400         size_t          converted_size;
1401
1402         SMB_ASSERT(ldap_state);
1403
1404         DEBUG(5,("smbldap_modify: dn => [%s]\n", dn ));
1405
1406         if (!push_utf8_talloc(talloc_tos(), &utf8_dn, dn, &converted_size)) {
1407                 return LDAP_NO_MEMORY;
1408         }
1409
1410         while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1411                 rc = ldap_modify_s(ldap_state->ldap_struct, utf8_dn, attrs);
1412                 if (rc != LDAP_SUCCESS) {
1413                         char *ld_error = NULL;
1414                         int ld_errno;
1415
1416                         ldap_get_option(ldap_state->ldap_struct,
1417                                         LDAP_OPT_ERROR_NUMBER, &ld_errno);
1418
1419                         ldap_get_option(ldap_state->ldap_struct,
1420                                         LDAP_OPT_ERROR_STRING, &ld_error);
1421                         DEBUG(10, ("Failed to modify dn: %s, error: %d (%s) "
1422                                    "(%s)\n", dn, ld_errno,
1423                                    ldap_err2string(rc),
1424                                    ld_error ? ld_error : "unknown"));
1425                         SAFE_FREE(ld_error);
1426
1427                         if (ld_errno == LDAP_SERVER_DOWN) {
1428                                 ldap_unbind(ldap_state->ldap_struct);
1429                                 ldap_state->ldap_struct = NULL;
1430                         }
1431                 }
1432         }
1433                 
1434         TALLOC_FREE(utf8_dn);
1435         return rc;
1436 }
1437
1438 int smbldap_add(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1439 {
1440         int             rc = LDAP_SERVER_DOWN;
1441         int             attempts = 0;
1442         char           *utf8_dn;
1443         time_t          endtime = time(NULL)+lp_ldap_timeout();
1444         size_t          converted_size;
1445         
1446         SMB_ASSERT(ldap_state);
1447
1448         DEBUG(5,("smbldap_add: dn => [%s]\n", dn ));
1449
1450         if (!push_utf8_talloc(talloc_tos(), &utf8_dn, dn, &converted_size)) {
1451                 return LDAP_NO_MEMORY;
1452         }
1453
1454         while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1455                 rc = ldap_add_s(ldap_state->ldap_struct, utf8_dn, attrs);
1456                 if (rc != LDAP_SUCCESS) {
1457                         char *ld_error = NULL;
1458                         int ld_errno;
1459
1460                         ldap_get_option(ldap_state->ldap_struct,
1461                                         LDAP_OPT_ERROR_NUMBER, &ld_errno);
1462
1463                         ldap_get_option(ldap_state->ldap_struct,
1464                                         LDAP_OPT_ERROR_STRING, &ld_error);
1465                         DEBUG(10, ("Failed to add dn: %s, error: %d (%s) "
1466                                    "(%s)\n", dn, ld_errno,
1467                                    ldap_err2string(rc),
1468                                    ld_error ? ld_error : "unknown"));
1469                         SAFE_FREE(ld_error);
1470
1471                         if (ld_errno == LDAP_SERVER_DOWN) {
1472                                 ldap_unbind(ldap_state->ldap_struct);
1473                                 ldap_state->ldap_struct = NULL;
1474                         }
1475                 }
1476         }
1477         
1478         TALLOC_FREE(utf8_dn);
1479         return rc;
1480 }
1481
1482 int smbldap_delete(struct smbldap_state *ldap_state, const char *dn)
1483 {
1484         int             rc = LDAP_SERVER_DOWN;
1485         int             attempts = 0;
1486         char           *utf8_dn;
1487         time_t          endtime = time(NULL)+lp_ldap_timeout();
1488         size_t          converted_size;
1489         
1490         SMB_ASSERT(ldap_state);
1491
1492         DEBUG(5,("smbldap_delete: dn => [%s]\n", dn ));
1493
1494         if (!push_utf8_talloc(talloc_tos(), &utf8_dn, dn, &converted_size)) {
1495                 return LDAP_NO_MEMORY;
1496         }
1497
1498         while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1499                 rc = ldap_delete_s(ldap_state->ldap_struct, utf8_dn);
1500                 if (rc != LDAP_SUCCESS) {
1501                         char *ld_error = NULL;
1502                         int ld_errno;
1503
1504                         ldap_get_option(ldap_state->ldap_struct,
1505                                         LDAP_OPT_ERROR_NUMBER, &ld_errno);
1506
1507                         ldap_get_option(ldap_state->ldap_struct,
1508                                         LDAP_OPT_ERROR_STRING, &ld_error);
1509                         DEBUG(10, ("Failed to delete dn: %s, error: %d (%s) "
1510                                    "(%s)\n", dn, ld_errno,
1511                                    ldap_err2string(rc),
1512                                    ld_error ? ld_error : "unknown"));
1513                         SAFE_FREE(ld_error);
1514
1515                         if (ld_errno == LDAP_SERVER_DOWN) {
1516                                 ldap_unbind(ldap_state->ldap_struct);
1517                                 ldap_state->ldap_struct = NULL;
1518                         }
1519                 }
1520         }
1521         
1522         TALLOC_FREE(utf8_dn);
1523         return rc;
1524 }
1525
1526 int smbldap_extended_operation(struct smbldap_state *ldap_state, 
1527                                LDAP_CONST char *reqoid, struct berval *reqdata, 
1528                                LDAPControl **serverctrls, LDAPControl **clientctrls, 
1529                                char **retoidp, struct berval **retdatap)
1530 {
1531         int             rc = LDAP_SERVER_DOWN;
1532         int             attempts = 0;
1533         time_t          endtime = time(NULL)+lp_ldap_timeout();
1534         
1535         if (!ldap_state)
1536                 return (-1);
1537
1538         while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1539                 rc = ldap_extended_operation_s(ldap_state->ldap_struct, reqoid,
1540                                                reqdata, serverctrls,
1541                                                clientctrls, retoidp, retdatap);
1542                 if (rc != LDAP_SUCCESS) {
1543                         char *ld_error = NULL;
1544                         int ld_errno;
1545
1546                         ldap_get_option(ldap_state->ldap_struct,
1547                                         LDAP_OPT_ERROR_NUMBER, &ld_errno);
1548
1549                         ldap_get_option(ldap_state->ldap_struct,
1550                                         LDAP_OPT_ERROR_STRING, &ld_error);
1551                         DEBUG(10, ("Extended operation failed with error: "
1552                                    "%d (%s) (%s)\n", ld_errno,
1553                                    ldap_err2string(rc),
1554                                    ld_error ? ld_error : "unknown"));
1555                         SAFE_FREE(ld_error);
1556
1557                         if (ld_errno == LDAP_SERVER_DOWN) {
1558                                 ldap_unbind(ldap_state->ldap_struct);
1559                                 ldap_state->ldap_struct = NULL;
1560                         }
1561                 }
1562         }
1563                 
1564         return rc;
1565 }
1566
1567 /*******************************************************************
1568  run the search by name.
1569 ******************************************************************/
1570 int smbldap_search_suffix (struct smbldap_state *ldap_state,
1571                            const char *filter, const char **search_attr,
1572                            LDAPMessage ** result)
1573 {
1574         return smbldap_search(ldap_state, lp_ldap_suffix(), LDAP_SCOPE_SUBTREE,
1575                               filter, search_attr, 0, result);
1576 }
1577
1578 static void smbldap_idle_fn(struct event_context *event_ctx,
1579                             struct timed_event *te,
1580                             struct timeval now,
1581                             void *private_data)
1582 {
1583         struct smbldap_state *state = (struct smbldap_state *)private_data;
1584
1585         TALLOC_FREE(state->idle_event);
1586
1587         if (state->ldap_struct == NULL) {
1588                 DEBUG(10,("ldap connection not connected...\n"));
1589                 return;
1590         }
1591                 
1592         if ((state->last_use+SMBLDAP_IDLE_TIME) > now.tv_sec) {
1593                 DEBUG(10,("ldap connection not idle...\n"));
1594
1595                 state->idle_event = event_add_timed(
1596                         event_ctx, NULL,
1597                         timeval_add(&now, SMBLDAP_IDLE_TIME, 0),
1598                         smbldap_idle_fn,
1599                         private_data);
1600                 return;
1601         }
1602                 
1603         DEBUG(7,("ldap connection idle...closing connection\n"));
1604         smbldap_close(state);
1605 }
1606
1607 /**********************************************************************
1608  Housekeeping
1609  *********************************************************************/
1610
1611 void smbldap_free_struct(struct smbldap_state **ldap_state) 
1612 {
1613         smbldap_close(*ldap_state);
1614         
1615         if ((*ldap_state)->bind_secret) {
1616                 memset((*ldap_state)->bind_secret, '\0', strlen((*ldap_state)->bind_secret));
1617         }
1618
1619         SAFE_FREE((*ldap_state)->bind_dn);
1620         SAFE_FREE((*ldap_state)->bind_secret);
1621
1622         TALLOC_FREE((*ldap_state)->idle_event);
1623
1624         *ldap_state = NULL;
1625
1626         /* No need to free any further, as it is talloc()ed */
1627 }
1628
1629
1630 /**********************************************************************
1631  Intitalise the 'general' ldap structures, on which ldap operations may be conducted
1632  *********************************************************************/
1633
1634 NTSTATUS smbldap_init(TALLOC_CTX *mem_ctx, struct event_context *event_ctx,
1635                       const char *location,
1636                       struct smbldap_state **smbldap_state)
1637 {
1638         *smbldap_state = TALLOC_ZERO_P(mem_ctx, struct smbldap_state);
1639         if (!*smbldap_state) {
1640                 DEBUG(0, ("talloc() failed for ldapsam private_data!\n"));
1641                 return NT_STATUS_NO_MEMORY;
1642         }
1643
1644         if (location) {
1645                 (*smbldap_state)->uri = talloc_strdup(mem_ctx, location);
1646         } else {
1647                 (*smbldap_state)->uri = "ldap://localhost";
1648         }
1649
1650         (*smbldap_state)->event_context = event_ctx;
1651
1652         return NT_STATUS_OK;
1653 }
1654
1655  char *smbldap_talloc_dn(TALLOC_CTX *mem_ctx, LDAP *ld,
1656                          LDAPMessage *entry)
1657 {
1658         char *utf8_dn, *unix_dn;
1659         size_t converted_size;
1660
1661         utf8_dn = ldap_get_dn(ld, entry);
1662         if (!utf8_dn) {
1663                 DEBUG (5, ("smbldap_talloc_dn: ldap_get_dn failed\n"));
1664                 return NULL;
1665         }
1666         if (!pull_utf8_talloc(mem_ctx, &unix_dn, utf8_dn, &converted_size)) {
1667                 DEBUG (0, ("smbldap_talloc_dn: String conversion failure utf8 "
1668                            "[%s]\n", utf8_dn));
1669                 return NULL;
1670         }
1671         ldap_memfree(utf8_dn);
1672         return unix_dn;
1673 }
1674
1675 /*******************************************************************
1676  Check if root-dse has a certain Control or Extension
1677 ********************************************************************/
1678
1679 static bool smbldap_check_root_dse(LDAP *ld, const char **attrs, const char *value) 
1680 {
1681         LDAPMessage *msg = NULL;
1682         LDAPMessage *entry = NULL;
1683         char **values = NULL;
1684         int rc, num_result, num_values, i;
1685         bool result = False;
1686
1687         if (!attrs[0]) {
1688                 DEBUG(3,("smbldap_check_root_dse: nothing to look for\n"));
1689                 return False;
1690         }
1691
1692         if (!strequal(attrs[0], "supportedExtension") && 
1693             !strequal(attrs[0], "supportedControl") && 
1694             !strequal(attrs[0], "namingContexts")) {
1695                 DEBUG(3,("smbldap_check_root_dse: no idea what to query root-dse for: %s ?\n", attrs[0]));
1696                 return False;
1697         }
1698
1699         rc = ldap_search_s(ld, "", LDAP_SCOPE_BASE, 
1700                            "(objectclass=*)", CONST_DISCARD(char **, attrs), 0 , &msg);
1701
1702         if (rc != LDAP_SUCCESS) {
1703                 DEBUG(3,("smbldap_check_root_dse: Could not search rootDSE\n"));
1704                 return False;
1705         }
1706
1707         num_result = ldap_count_entries(ld, msg);
1708
1709         if (num_result != 1) {
1710                 DEBUG(3,("smbldap_check_root_dse: Expected one rootDSE, got %d\n", num_result));
1711                 goto done;
1712         }
1713
1714         entry = ldap_first_entry(ld, msg);
1715
1716         if (entry == NULL) {
1717                 DEBUG(3,("smbldap_check_root_dse: Could not retrieve rootDSE\n"));
1718                 goto done;
1719         }
1720
1721         values = ldap_get_values(ld, entry, attrs[0]);
1722
1723         if (values == NULL) {
1724                 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not support any %s\n", attrs[0]));
1725                 goto done;
1726         }
1727
1728         num_values = ldap_count_values(values);
1729
1730         if (num_values == 0) {
1731                 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not have any %s\n", attrs[0]));
1732                 goto done;
1733         }
1734
1735         for (i=0; i<num_values; i++) {
1736                 if (strcmp(values[i], value) == 0)
1737                         result = True;
1738         }
1739
1740
1741  done:
1742         if (values != NULL)
1743                 ldap_value_free(values);
1744         if (msg != NULL)
1745                 ldap_msgfree(msg);
1746
1747         return result;
1748
1749 }
1750
1751 /*******************************************************************
1752  Check if LDAP-Server supports a certain Control (OID in string format)
1753 ********************************************************************/
1754
1755 bool smbldap_has_control(LDAP *ld, const char *control)
1756 {
1757         const char *attrs[] = { "supportedControl", NULL };
1758         return smbldap_check_root_dse(ld, attrs, control);
1759 }
1760
1761 /*******************************************************************
1762  Check if LDAP-Server supports a certain Extension (OID in string format)
1763 ********************************************************************/
1764
1765 bool smbldap_has_extension(LDAP *ld, const char *extension)
1766 {
1767         const char *attrs[] = { "supportedExtension", NULL };
1768         return smbldap_check_root_dse(ld, attrs, extension);
1769 }
1770
1771 /*******************************************************************
1772  Check if LDAP-Server holds a given namingContext
1773 ********************************************************************/
1774
1775 bool smbldap_has_naming_context(LDAP *ld, const char *naming_context)
1776 {
1777         const char *attrs[] = { "namingContexts", NULL };
1778         return smbldap_check_root_dse(ld, attrs, naming_context);
1779 }
1780
1781 bool smbldap_set_creds(struct smbldap_state *ldap_state, bool anon, const char *dn, const char *secret)
1782 {
1783         ldap_state->anonymous = anon;
1784
1785         /* free any previously set credential */
1786
1787         SAFE_FREE(ldap_state->bind_dn);
1788         if (ldap_state->bind_secret) {
1789                 /* make sure secrets are zeroed out of memory */
1790                 memset(ldap_state->bind_secret, '\0', strlen(ldap_state->bind_secret));
1791                 SAFE_FREE(ldap_state->bind_secret);
1792         }
1793
1794         if ( ! anon) {
1795                 ldap_state->bind_dn = SMB_STRDUP(dn);
1796                 ldap_state->bind_secret = SMB_STRDUP(secret);
1797         }
1798
1799         return True;
1800 }