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/*
  $Id: ldap1.cpp,v 1.1.1.1 2005/07/07 15:05:59 oflebbe Exp $

  Copyright (C) 2003 Olaf Flebbe, Science and Computing AG
  o.flebbe@science-computing.de

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

*/
#define WINDOWS_MEAN_AND_LEAN
#define UNICODE

#include "ldap1.h"

void 
CLDAP::do_query( const mystring& filter, const wchar_t *attrs[]) {
  if (fp) {
    fprintf(fp, "do_query %S\n", filter.c_str());
    fflush(fp);
  }

  // this is extremly ugly: Why can't the compile not cast a wchar_t * to a PWCHAR???
  ldap_search_s( lp, (const PWCHAR) context.c_str(), LDAP_SCOPE_SUBTREE, 
		 (const PWCHAR) filter.c_str(), (PWCHAR *) attrs, 0, &msg);
  if (fp) {
    fprintf(fp, "after ldap_search\n");
    fflush(fp);
  }
  if (msg != NULL) {
    msg = ldap_first_entry( lp, msg);
  } 
}
mystring
CLDAP::queryAttr( const mystring &filter, const mystring &attr, bool *exists) {

  const wchar_t *attrs[]= { attr.c_str(), NULL} ; //= { attr.c_str(), NULL };

  do_query( filter, attrs);
  if (exists != NULL)
	*exists = true;
  while ( msg != NULL) {
    BerElement *berPtr;
    wchar_t *attrPtr = ldap_first_attribute( lp, msg, &berPtr);
    while (attrPtr != NULL) {
      wchar_t **valList = ldap_get_values( lp, msg, attrPtr);
      for (unsigned int i = 0; i < ldap_count_values( valList); i++) 
	return mystring( valList[i]);
      attrPtr = ldap_next_attribute( lp, msg, berPtr);
    }
  }
  if (exists != NULL)
	  *exists = false;
  return mystring(L"");
}

stringSet
CLDAP::queryListOfAttr( const mystring &filter, const mystring &attr) {
  stringSet listOfVal;
  const wchar_t *attrs[]= { attr.c_str(), NULL} ; //= { attr.c_str(), NULL };
  do_query( filter, attrs);
  while ( msg != NULL) {
    BerElement *berPtr;
    wchar_t *attrPtr = ldap_first_attribute( lp, msg, &berPtr);
    while (attrPtr != NULL) {
      wchar_t **valList = ldap_get_values( lp, msg, attrPtr);
      for (unsigned int i = 0; i < ldap_count_values( valList); i++) 
		listOfVal.insert( mystring( valList[i]));
      attrPtr = ldap_next_attribute( lp, msg, berPtr);
    }
    msg = ldap_next_entry( lp, msg);
  }
  return listOfVal;
}

stringMap
CLDAP::querySetOfAttrs( const mystring &filter, const stringSet &attr) {
  stringMap mapOfVal;

  const wchar_t **attrs;
  attrs = (const wchar_t **) malloc( sizeof( wchar_t *) * (attr.size()+1));
  for (unsigned int i = 0; i < attr.size()+1; i++)
	  attrs[i] = NULL;

  const wchar_t **pat = attrs;

  for (stringSet::const_iterator ptr = attr.begin(); ptr != attr.end(); ptr++) {
	  *pat++ = ptr->c_str();
  }
  

  do_query( filter, attrs);
  while ( msg != NULL) {
    BerElement *berPtr;
    wchar_t *attrPtr = ldap_first_attribute( lp, msg, &berPtr);
    while (attrPtr != NULL) {
      wchar_t **valList = ldap_get_values( lp, msg, attrPtr);

	  mapOfVal[ mystring( attrPtr)] = mystring( valList[0]);
      attrPtr = ldap_next_attribute( lp, msg, berPtr);
    }
    msg = ldap_next_entry( lp, msg);
  }
  return mapOfVal;
}

CLDAP::CLDAP( const std::list<mystring>& servers, FILE *fp, const mystring& binddn, const mystring& bindpasswd) {
  this->fp = fp;
  msg = NULL;
  for ( std::list<mystring>::const_iterator ptr = servers.begin(); ptr != servers.end(); ptr++) {
    lp = ldap_init( (const PWCHAR) ptr->c_str(), LDAP_PORT); 
    ULONG version = LDAP_VERSION3;
    if (!lp) {
		if (fp) {
			fprintf( fp, "ldap_init error on server %S\n", ptr->c_str());
		}
      continue;
    }

    int ret = ldap_set_option( lp, LDAP_OPT_VERSION, &version);
    if (ret != LDAP_SUCCESS) {
		if (fp) {
			fprintf( fp, "ldap_set_option error %x on server %S\n", ret, ptr->c_str());
		}
		ldap_unbind( lp);
		continue;
    }

    if (binddn == L"" || bindpasswd == L"") {
      ret = ldap_simple_bind_s( lp, NULL, NULL);
      if (LDAP_SUCCESS !=	ret) {
	if (fp) {
	  fprintf( fp, "anonymous ldap_simple_bind_s error %x on server %S\n", ret, ptr->c_str());
	}
	ldap_unbind( lp);
	lp = NULL;
      }
    } else {
      ret = ldap_simple_bind_s( lp, (PWCHAR) binddn.c_str(), (PWCHAR) bindpasswd.c_str());
      if (LDAP_SUCCESS !=	ret) {
	if (fp) {
	  fprintf( fp, "ldap_simple_bind_s error %x on server %S, basedn %S, passwd %S\n", 
		   ret, ptr->c_str(), binddn.c_str(), bindpasswd.c_str());
	}
	ldap_unbind( lp);
	lp = NULL;
      }
    }
    return;
  }
}