1 /* LDAP client interface for XEmacs.
2 Copyright (C) 1998 Free Software Foundation, Inc.
4 This file is part of XEmacs.
6 XEmacs is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the
8 Free Software Foundation; either version 2, or (at your option) any
11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 You should have received a copy of the GNU General Public License
17 along with XEmacs; see the file COPYING. If not, write to
18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
21 /* Synched up with: Not in FSF. */
23 /* Author: Oscar Figueiredo with lots of support from Hrvoje Niksic */
25 /* This file provides lisp primitives for access to an LDAP library
26 conforming to the API defined in RFC 1823.
27 It has been tested with:
28 - UMich LDAP 3.3 (http://www.umich.edu/~dirsvcs/ldap/)
29 - OpenLDAP 1.2 (http://www.openldap.org/)
30 - Netscape's LDAP SDK (http://developer.netscape.com/) */
43 static int ldap_default_port;
44 static Lisp_Object Vldap_default_base;
46 /* Needed by the lrecord definition */
49 /* ldap-open plist keywords */
50 static Lisp_Object Qport, Qauth, Qbinddn, Qpasswd, Qderef, Qtimelimit, Qsizelimit;
51 /* Search scope limits */
52 static Lisp_Object Qbase, Qonelevel, Qsubtree;
53 /* Authentication methods */
54 static Lisp_Object Qkrbv41, Qkrbv42;
56 static Lisp_Object Qnever, Qalways, Qfind;
57 /* Modification types (Qdelete is defined in general.c) */
58 static Lisp_Object Qadd, Qreplace;
61 /************************************************************************/
62 /* Utility Functions */
63 /************************************************************************/
66 signal_ldap_error (LDAP *ld, LDAPMessage *res, int ldap_err)
70 #if defined HAVE_LDAP_PARSE_RESULT
72 ldap_err = ldap_parse_result (ld, res,
74 NULL, NULL, NULL, NULL, 0);
75 if (ldap_err == LDAP_SUCCESS)
77 #elif defined HAVE_LDAP_GET_LDERRNO
78 ldap_err = ldap_get_lderrno (ld, NULL, NULL);
79 #elif defined HAVE_LDAP_RESULT2ERROR
80 ldap_err = ldap_result2error (ld, res, 0);
82 ldap_err = ld->ld_errno;
85 signal_simple_error ("LDAP error",
86 build_string (ldap_err2string (ldap_err)));
90 /************************************************************************/
91 /* ldap lrecord basic functions */
92 /************************************************************************/
95 make_ldap (Lisp_LDAP *ldap)
97 Lisp_Object lisp_ldap;
98 XSETLDAP (lisp_ldap, ldap);
103 mark_ldap (Lisp_Object obj)
105 return XLDAP (obj)->host;
109 print_ldap (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
113 Lisp_LDAP *ldap = XLDAP (obj);
116 error ("printing unreadable object #<ldap %s>",
117 XSTRING_DATA (ldap->host));
119 write_c_string ("#<ldap ", printcharfun);
120 print_internal (ldap->host, printcharfun, 1);
122 write_c_string ("(dead) ",printcharfun);
123 sprintf (buf, " 0x%x>", (unsigned int)ldap);
124 write_c_string (buf, printcharfun);
130 Lisp_LDAP *ldap = alloc_lcrecord_type (Lisp_LDAP, &lrecord_ldap);
138 finalize_ldap (void *header, int for_disksave)
140 Lisp_LDAP *ldap = (Lisp_LDAP *) header;
143 signal_simple_error ("Can't dump an emacs containing LDAP objects",
147 ldap_unbind (ldap->ld);
151 DEFINE_LRECORD_IMPLEMENTATION ("ldap", ldap,
152 mark_ldap, print_ldap, finalize_ldap,
153 NULL, NULL, 0, Lisp_LDAP);
158 /************************************************************************/
159 /* Basic ldap accessors */
160 /************************************************************************/
162 DEFUN ("ldapp", Fldapp, 1, 1, 0, /*
163 Return t if OBJECT is a LDAP connection.
167 return LDAPP (object) ? Qt : Qnil;
170 DEFUN ("ldap-host", Fldap_host, 1, 1, 0, /*
171 Return the server host of the connection LDAP, as a string.
176 return (XLDAP (ldap))->host;
179 DEFUN ("ldap-live-p", Fldap_status, 1, 1, 0, /*
180 Return t if LDAP is an active LDAP connection.
185 return (XLDAP (ldap))->ld ? Qt : Qnil;
188 /************************************************************************/
189 /* Opening/Closing a LDAP connection */
190 /************************************************************************/
193 DEFUN ("ldap-open", Fldap_open, 1, 2, 0, /*
194 Open a LDAP connection to HOST.
195 PLIST is a plist containing additional parameters for the connection.
196 Valid keys in that list are:
197 `port' the TCP port to use for the connection if different from
199 `auth' is the authentication method to use, possible values depend on
200 the LDAP library XEmacs was compiled with: `simple', `krbv41' and `krbv42'.
201 `binddn' is the distinguished name of the user to bind as (in RFC 1779 syntax).
202 `passwd' is the password to use for simple authentication.
203 `deref' is one of the symbols `never', `always', `search' or `find'.
204 `timelimit' is the timeout limit for the connection in seconds.
205 `sizelimit' is the maximum number of matches to return.
209 /* This function can GC */
213 int ldap_auth = LDAP_AUTH_SIMPLE;
214 char *ldap_binddn = NULL;
215 char *ldap_passwd = NULL;
216 int ldap_deref = LDAP_DEREF_NEVER;
217 int ldap_timelimit = 0;
218 int ldap_sizelimit = 0;
221 Lisp_Object list, keyword, value;
225 EXTERNAL_PROPERTY_LIST_LOOP (list, keyword, value, plist)
228 if (EQ (keyword, Qport))
231 ldap_port = XINT (value);
233 /* Authentication method */
234 if (EQ (keyword, Qauth))
236 if (EQ (value, Qsimple))
237 ldap_auth = LDAP_AUTH_SIMPLE;
238 #ifdef LDAP_AUTH_KRBV41
239 else if (EQ (value, Qkrbv41))
240 ldap_auth = LDAP_AUTH_KRBV41;
242 #ifdef LDAP_AUTH_KRBV42
243 else if (EQ (value, Qkrbv42))
244 ldap_auth = LDAP_AUTH_KRBV42;
247 signal_simple_error ("Invalid authentication method", value);
250 else if (EQ (keyword, Qbinddn))
252 CHECK_STRING (value);
253 TO_EXTERNAL_FORMAT (LISP_STRING, value,
254 C_STRING_ALLOCA, ldap_binddn,
258 else if (EQ (keyword, Qpasswd))
260 CHECK_STRING (value);
261 TO_EXTERNAL_FORMAT (LISP_STRING, value,
262 C_STRING_ALLOCA, ldap_passwd,
266 else if (EQ (keyword, Qderef))
268 if (EQ (value, Qnever))
269 ldap_deref = LDAP_DEREF_NEVER;
270 else if (EQ (value, Qsearch))
271 ldap_deref = LDAP_DEREF_SEARCHING;
272 else if (EQ (value, Qfind))
273 ldap_deref = LDAP_DEREF_FINDING;
274 else if (EQ (value, Qalways))
275 ldap_deref = LDAP_DEREF_ALWAYS;
277 signal_simple_error ("Invalid deref value", value);
280 else if (EQ (keyword, Qtimelimit))
283 ldap_timelimit = XINT (value);
286 else if (EQ (keyword, Qsizelimit))
289 ldap_sizelimit = XINT (value);
295 ldap_port = ldap_default_port;
298 /* Connect to the server and bind */
299 slow_down_interrupts ();
300 ld = ldap_open ((char *)XSTRING_DATA (host), ldap_port);
301 speed_up_interrupts ();
304 signal_simple_error_2 ("Failed connecting to host",
306 lisp_strerror (errno));
309 #ifdef HAVE_LDAP_SET_OPTION
310 if ((err = ldap_set_option (ld, LDAP_OPT_DEREF,
311 (void *)&ldap_deref)) != LDAP_SUCCESS)
312 signal_ldap_error (ld, NULL, err);
313 if ((err = ldap_set_option (ld, LDAP_OPT_TIMELIMIT,
314 (void *)&ldap_timelimit)) != LDAP_SUCCESS)
315 signal_ldap_error (ld, NULL, err);
316 if ((err = ldap_set_option (ld, LDAP_OPT_SIZELIMIT,
317 (void *)&ldap_sizelimit)) != LDAP_SUCCESS)
318 signal_ldap_error (ld, NULL, err);
319 if ((err = ldap_set_option (ld, LDAP_OPT_REFERRALS,
320 LDAP_OPT_ON)) != LDAP_SUCCESS)
321 signal_ldap_error (ld, NULL, err);
322 if ((err = ldap_set_option (ld, LDAP_OPT_RESTART,
323 LDAP_OPT_ON)) != LDAP_SUCCESS)
324 signal_ldap_error (ld, NULL, err);
325 #else /* not HAVE_LDAP_SET_OPTION */
326 ld->ld_deref = ldap_deref;
327 ld->ld_timelimit = ldap_timelimit;
328 ld->ld_sizelimit = ldap_sizelimit;
329 #ifdef LDAP_REFERRALS
330 ld->ld_options = LDAP_OPT_REFERRALS;
331 #else /* not LDAP_REFERRALS */
333 #endif /* not LDAP_REFERRALS */
334 /* XEmacs uses interrupts (SIGIO,SIGALRM), LDAP calls need to ignore them */
335 ld->ld_options |= LDAP_OPT_RESTART;
336 #endif /* not HAVE_LDAP_SET_OPTION */
338 err = ldap_bind_s (ld, ldap_binddn, ldap_passwd, ldap_auth);
339 if (err != LDAP_SUCCESS)
340 signal_simple_error ("Failed binding to the server",
341 build_string (ldap_err2string (err)));
343 ldap = allocate_ldap ();
347 return make_ldap (ldap);
352 DEFUN ("ldap-close", Fldap_close, 1, 1, 0, /*
353 Close an LDAP connection.
358 CHECK_LIVE_LDAP (ldap);
359 lldap = XLDAP (ldap);
360 ldap_unbind (lldap->ld);
367 /************************************************************************/
368 /* Working on a LDAP connection */
369 /************************************************************************/
370 struct ldap_unwind_struct
373 struct berval **vals;
377 ldap_search_unwind (Lisp_Object unwind_obj)
379 struct ldap_unwind_struct *unwind =
380 (struct ldap_unwind_struct *) get_opaque_ptr (unwind_obj);
382 ldap_msgfree (unwind->res);
384 ldap_value_free_len (unwind->vals);
388 /* The following function is called `ldap-search-basic' instead of */
389 /* plain `ldap-search' to maintain compatibility with the XEmacs 21.1 */
390 /* API where `ldap-search' was the name of the high-level search */
393 DEFUN ("ldap-search-basic", Fldap_search_basic, 2, 8, 0, /*
394 Perform a search on an open LDAP connection.
395 LDAP is an LDAP connection object created with `ldap-open'.
396 FILTER is a filter string for the search as described in RFC 1558.
397 BASE is the distinguished name at which to start the search.
398 SCOPE is one of the symbols `base', `onelevel' or `subtree' indicating
399 the scope of the search.
400 ATTRS is a list of strings indicating which attributes to retrieve
401 for each matching entry. If nil return all available attributes.
402 If ATTRSONLY is non-nil then only the attributes are retrieved, not
403 the associated values.
404 If WITHDN is non-nil each entry in the result will be prepended with
405 its distinguished name DN.
406 If VERBOSE is non-nil progress messages will be echoed.
407 The function returns a list of matching entries. Each entry is itself
408 an alist of attribute/value pairs optionally preceded by the DN of the
409 entry according to the value of WITHDN.
411 (ldap, filter, base, scope, attrs, attrsonly, withdn, verbose))
413 /* This function can GC */
422 struct ldap_unwind_struct unwind;
424 int ldap_scope = LDAP_SCOPE_SUBTREE;
425 char **ldap_attributes = NULL;
427 int speccount = specpdl_depth ();
429 Lisp_Object list, entry, result;
430 struct gcpro gcpro1, gcpro2, gcpro3;
432 list = entry = result = Qnil;
433 GCPRO3 (list, entry, result);
438 /* Do all the parameter checking */
439 CHECK_LIVE_LDAP (ldap);
440 ld = XLDAP (ldap)->ld;
443 CHECK_STRING (filter);
448 base = Vldap_default_base;
458 if (EQ (scope, Qbase))
459 ldap_scope = LDAP_SCOPE_BASE;
460 else if (EQ (scope, Qonelevel))
461 ldap_scope = LDAP_SCOPE_ONELEVEL;
462 else if (EQ (scope, Qsubtree))
463 ldap_scope = LDAP_SCOPE_SUBTREE;
465 signal_simple_error ("Invalid scope", scope);
468 /* Attributes to search */
472 ldap_attributes = alloca_array (char *, 1 + XINT (Flength (attrs)));
475 EXTERNAL_LIST_LOOP (attrs, attrs)
477 Lisp_Object current = XCAR (attrs);
478 CHECK_STRING (current);
479 TO_EXTERNAL_FORMAT (LISP_STRING, current,
480 C_STRING_ALLOCA, ldap_attributes[i],
484 ldap_attributes[i] = NULL;
487 /* Attributes only ? */
488 CHECK_SYMBOL (attrsonly);
490 /* Perform the search */
492 NILP (base) ? "" : (char *) XSTRING_DATA (base),
494 NILP (filter) ? "" : (char *) XSTRING_DATA (filter),
496 NILP (attrsonly) ? 0 : 1)
499 signal_ldap_error (ld, NULL, 0);
502 /* Ensure we don't exit without cleaning up */
503 record_unwind_protect (ldap_search_unwind,
504 make_opaque_ptr (&unwind));
506 /* Build the results list */
509 rc = ldap_result (ld, LDAP_RES_ANY, 0, NULL, &unwind.res);
511 while (rc == LDAP_RES_SEARCH_ENTRY)
515 e = ldap_first_entry (ld, unwind.res);
516 /* #### This call to message() is pretty fascist, because it
517 destroys the current echo area contents, even when invoked
518 from Lisp. It should use echo_area_message() instead, and
519 restore the old echo area contents later. */
520 if (! NILP (verbose))
521 message ("Parsing ldap results... %d", matches);
523 /* Get the DN if required */
526 dn = ldap_get_dn (ld, e);
528 signal_ldap_error (ld, e, 0);
529 entry = Fcons (build_ext_string (dn, Qnative), Qnil);
531 for (a= ldap_first_attribute (ld, e, &ptr);
533 a = ldap_next_attribute (ld, e, ptr) )
535 list = Fcons (build_ext_string (a, Qnative), Qnil);
536 unwind.vals = ldap_get_values_len (ld, e, a);
537 if (unwind.vals != NULL)
539 for (i = 0; unwind.vals[i] != NULL; i++)
541 list = Fcons (make_ext_string (unwind.vals[i]->bv_val,
542 unwind.vals[i]->bv_len,
547 entry = Fcons (Fnreverse (list),
549 ldap_value_free_len (unwind.vals);
552 result = Fcons (Fnreverse (entry),
554 ldap_msgfree (unwind.res);
557 rc = ldap_result (ld, LDAP_RES_ANY, 0, NULL, &(unwind.res));
560 #if defined HAVE_LDAP_PARSE_RESULT
561 rc2 = ldap_parse_result (ld, unwind.res,
563 NULL, NULL, NULL, NULL, 0);
564 if (rc2 != LDAP_SUCCESS)
568 signal_ldap_error (ld, NULL, LDAP_TIMELIMIT_EXCEEDED);
571 signal_ldap_error (ld, unwind.res, (unwind.res==NULL) ? ld->ld_errno : 0);
573 #if defined HAVE_LDAP_RESULT2ERROR
574 rc = ldap_result2error (ld, unwind.res, 0);
578 if (rc != LDAP_SUCCESS)
579 signal_ldap_error (ld, NULL, rc);
581 ldap_msgfree (unwind.res);
582 unwind.res = (LDAPMessage *)NULL;
584 /* #### See above for calling message(). */
585 if (! NILP (verbose))
586 message ("Parsing ldap results... done");
588 unbind_to (speccount, Qnil);
590 return Fnreverse (result);
593 DEFUN ("ldap-add", Fldap_add, 3, 3, 0, /*
594 Add an entry to an LDAP directory.
595 LDAP is an LDAP connection object created with `ldap-open'.
596 DN is the distinguished name of the entry to add.
597 ENTRY is an entry specification, i.e., a list of cons cells
598 containing attribute/value string pairs.
603 LDAPMod *ldap_mods, **ldap_mods_ptrs;
604 struct berval *bervals;
608 Lisp_Object current, values;
609 struct gcpro gcpro1, gcpro2;
610 GCPRO2 (current, values);
612 /* Do all the parameter checking */
613 CHECK_LIVE_LDAP (ldap);
614 ld = XLDAP (ldap)->ld;
619 /* Check the entry */
622 signal_simple_error ("Cannot add void entry", entry);
624 /* Build the ldap_mods array */
625 ldap_mods = alloca_array (LDAPMod, XINT (Flength (entry)));
626 ldap_mods_ptrs = alloca_array (LDAPMod *, 1 + XINT (Flength (entry)));
628 EXTERNAL_LIST_LOOP (entry, entry)
630 current = XCAR (entry);
631 CHECK_CONS (current);
632 CHECK_STRING (XCAR (current));
633 ldap_mods_ptrs[i] = &(ldap_mods[i]);
634 TO_EXTERNAL_FORMAT (LISP_STRING, XCAR (current),
635 C_STRING_ALLOCA, ldap_mods[i].mod_type,
637 ldap_mods[i].mod_op = LDAP_MOD_ADD | LDAP_MOD_BVALUES;
638 values = XCDR (current);
642 alloca_array (struct berval, XINT (Flength (values)));
643 ldap_mods[i].mod_vals.modv_bvals =
644 alloca_array (struct berval *, 1 + XINT (Flength (values)));
646 EXTERNAL_LIST_LOOP (values, values)
648 current = XCAR (values);
649 CHECK_STRING (current);
650 ldap_mods[i].mod_vals.modv_bvals[j] = &(bervals[j]);
651 TO_EXTERNAL_FORMAT (LISP_STRING, current,
652 ALLOCA, (bervals[j].bv_val,
657 ldap_mods[i].mod_vals.modv_bvals[j] = NULL;
661 CHECK_STRING (values);
662 bervals = alloca_array (struct berval, 1);
663 ldap_mods[i].mod_vals.modv_bvals = alloca_array (struct berval *, 2);
664 ldap_mods[i].mod_vals.modv_bvals[0] = &(bervals[0]);
665 TO_EXTERNAL_FORMAT (LISP_STRING, values,
666 ALLOCA, (bervals[0].bv_val,
669 ldap_mods[i].mod_vals.modv_bvals[1] = NULL;
673 ldap_mods_ptrs[i] = NULL;
674 rc = ldap_add_s (ld, (char *) XSTRING_DATA (dn), ldap_mods_ptrs);
675 if (rc != LDAP_SUCCESS)
676 signal_ldap_error (ld, NULL, rc);
681 DEFUN ("ldap-modify", Fldap_modify, 3, 3, 0, /*
682 Add an entry to an LDAP directory.
683 LDAP is an LDAP connection object created with `ldap-open'.
684 DN is the distinguished name of the entry to modify.
685 MODS is a list of modifications to apply.
686 A modification is a list of the form (MOD-OP ATTR VALUE1 VALUE2 ...)
687 MOD-OP and ATTR are mandatory, VALUEs are optional depending on MOD-OP.
688 MOD-OP is the type of modification, one of the symbols `add', `delete'
689 or `replace'. ATTR is the LDAP attribute type to modify
694 LDAPMod *ldap_mods, **ldap_mods_ptrs;
695 struct berval *bervals;
698 Lisp_Object current, mod_op, values;
699 struct gcpro gcpro1, gcpro2;
701 GCPRO2 (current, values);
703 /* Do all the parameter checking */
704 CHECK_LIVE_LDAP (ldap);
705 ld = XLDAP (ldap)->ld;
710 /* Check the entry */
715 /* Build the ldap_mods array */
716 ldap_mods = alloca_array (LDAPMod, XINT (Flength (mods)));
717 ldap_mods_ptrs = alloca_array (LDAPMod *, 1 + XINT (Flength (mods)));
719 EXTERNAL_LIST_LOOP (mods, mods)
721 current = XCAR (mods);
722 CHECK_CONS (current);
723 CHECK_SYMBOL (XCAR (current));
724 mod_op = XCAR (current);
725 ldap_mods_ptrs[i] = &(ldap_mods[i]);
726 ldap_mods[i].mod_op = LDAP_MOD_BVALUES;
727 if (EQ (mod_op, Qadd))
728 ldap_mods[i].mod_op |= LDAP_MOD_ADD;
729 else if (EQ (mod_op, Qdelete))
730 ldap_mods[i].mod_op |= LDAP_MOD_DELETE;
731 else if (EQ (mod_op, Qreplace))
732 ldap_mods[i].mod_op |= LDAP_MOD_REPLACE;
734 signal_simple_error ("Invalid LDAP modification type", mod_op);
735 current = XCDR (current);
736 CHECK_STRING (XCAR (current));
737 TO_EXTERNAL_FORMAT (LISP_STRING, XCAR (current),
738 C_STRING_ALLOCA, ldap_mods[i].mod_type,
740 values = XCDR (current);
741 bervals = alloca_array (struct berval, XINT (Flength (values)));
742 ldap_mods[i].mod_vals.modv_bvals =
743 alloca_array (struct berval *, 1 + XINT (Flength (values)));
745 EXTERNAL_LIST_LOOP (values, values)
747 current = XCAR (values);
748 CHECK_STRING (current);
749 ldap_mods[i].mod_vals.modv_bvals[j] = &(bervals[j]);
750 TO_EXTERNAL_FORMAT (LISP_STRING, current,
751 ALLOCA, (bervals[j].bv_val,
756 ldap_mods[i].mod_vals.modv_bvals[j] = NULL;
759 ldap_mods_ptrs[i] = NULL;
760 rc = ldap_modify_s (ld, (char *) XSTRING_DATA (dn), ldap_mods_ptrs);
761 if (rc != LDAP_SUCCESS)
762 signal_ldap_error (ld, NULL, rc);
768 DEFUN ("ldap-delete", Fldap_delete, 2, 2, 0, /*
769 Delete an entry to an LDAP directory.
770 LDAP is an LDAP connection object created with `ldap-open'.
771 DN is the distinguished name of the entry to delete.
778 /* Check parameters */
779 CHECK_LIVE_LDAP (ldap);
780 ld = XLDAP (ldap)->ld;
783 rc = ldap_delete_s (ld, (char *) XSTRING_DATA (dn));
784 if (rc != LDAP_SUCCESS)
785 signal_ldap_error (ld, NULL, rc);
791 INIT_LRECORD_IMPLEMENTATION (ldap);
793 defsymbol (&Qldapp, "ldapp");
794 defsymbol (&Qport, "port");
795 defsymbol (&Qauth, "auth");
796 defsymbol (&Qbinddn, "binddn");
797 defsymbol (&Qpasswd, "passwd");
798 defsymbol (&Qderef, "deref");
799 defsymbol (&Qtimelimit, "timelimit");
800 defsymbol (&Qsizelimit, "sizelimit");
801 defsymbol (&Qbase, "base");
802 defsymbol (&Qonelevel, "onelevel");
803 defsymbol (&Qsubtree, "subtree");
804 defsymbol (&Qkrbv41, "krbv41");
805 defsymbol (&Qkrbv42, "krbv42");
806 defsymbol (&Qnever, "never");
807 defsymbol (&Qalways, "always");
808 defsymbol (&Qfind, "find");
809 defsymbol (&Qadd, "add");
810 defsymbol (&Qreplace, "replace");
813 DEFSUBR (Fldap_host);
814 DEFSUBR (Fldap_status);
815 DEFSUBR (Fldap_open);
816 DEFSUBR (Fldap_close);
817 DEFSUBR (Fldap_search_basic);
819 DEFSUBR (Fldap_modify);
820 DEFSUBR (Fldap_delete);
827 ldap_default_port = LDAP_PORT;
828 Vldap_default_base = Qnil;
830 DEFVAR_INT ("ldap-default-port", &ldap_default_port /*
831 Default TCP port for LDAP connections.
832 Initialized from the LDAP library. Default value is 389.
835 DEFVAR_LISP ("ldap-default-base", &Vldap_default_base /*
836 Default base for LDAP searches.
837 This is a string using the syntax of RFC 1779.
838 For instance, "o=ACME, c=US" limits the search to the
839 Acme organization in the United States.