/*
  This file is part of libkldap.
  Copyright (c) 2004-2006 Szombathelyi György <gyurco@freemail.hu>

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

  This library 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
  Library General Public License for more details.

  You should have received a copy of the GNU Library General Public License
  along with this library; see the file COPYING.LIB.  If not, write to
  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  Boston, MA 02110-1301, USA.
*/

#include "ldapoperation.h"
#include "kldap_config.h"

#include <kdebug.h>

#include <QtCore/QTime>

#include <stdlib.h>
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif

#ifdef SASL2_FOUND
#include <sasl/sasl.h>
#endif

#ifdef LDAP_FOUND
#include <lber.h>
#include <ldap.h>
#endif

#include "ldapdefs.h"

using namespace KLDAP;

#ifdef LDAP_FOUND
static void extractControls( LdapControls &ctrls, LDAPControl **pctrls );
#endif // LDAP_FOUND

/*
   Returns the difference between msecs and elapsed. If msecs is -1,
   however, -1 is returned.
*/
static int kldap_timeout_value( int msecs, int elapsed )
{
  if ( msecs == -1 ) {
    return -1;
  }

  int timeout = msecs - elapsed;
  return timeout < 0 ? 0 : timeout;
}

class LdapOperation::LdapOperationPrivate
{
  public:
    LdapOperationPrivate();
    ~LdapOperationPrivate();
#ifdef LDAP_FOUND
    int processResult( int rescode, LDAPMessage *msg );
    int bind( const QByteArray &creds, SASL_Callback_Proc *saslproc, void *data, bool async );
#endif
    LdapControls mClientCtrls, mServerCtrls, mControls;
    LdapObject mObject;
    QByteArray mExtOid, mExtData;
    QByteArray mServerCred;
    QString mMatchedDn;
    QList<QByteArray> mReferrals;

  LdapConnection *mConnection;
  };

LdapOperation::LdapOperation()
  : d( new LdapOperationPrivate )
{
  d->mConnection = 0;
}

LdapOperation::LdapOperation( LdapConnection &conn )
  : d( new LdapOperationPrivate )
{
  setConnection( conn );
}

LdapOperation::~LdapOperation()
{
  delete d;
}

void LdapOperation::setConnection( LdapConnection &conn )
{
  d->mConnection = &conn;
}

LdapConnection &LdapOperation::connection()
{
  return *d->mConnection;
}

void LdapOperation::setClientControls( const LdapControls &ctrls )
{
  d->mClientCtrls = ctrls;
}

void LdapOperation::setServerControls( const LdapControls &ctrls )
{
  d->mServerCtrls = ctrls;
}

LdapControls LdapOperation::clientControls() const
{
  return d->mClientCtrls;
}

LdapControls LdapOperation::serverControls() const
{
  return d->mServerCtrls;
}

LdapObject LdapOperation::object() const
{
  return d->mObject;
}

LdapControls LdapOperation::controls() const
{
  return d->mControls;
}

QByteArray LdapOperation::extendedOid() const
{
  return d->mExtOid;
}

QByteArray LdapOperation::extendedData() const
{
  return d->mExtData;
}

QString LdapOperation::matchedDn() const
{
  return d->mMatchedDn;
}

QList<QByteArray> LdapOperation::referrals() const
{
  return d->mReferrals;
}

QByteArray LdapOperation::serverCred() const
{
  return d->mServerCred;
}

LdapOperation::LdapOperationPrivate::LdapOperationPrivate()
{
}

LdapOperation::LdapOperationPrivate::~LdapOperationPrivate()
{
}

#ifdef LDAP_FOUND

#ifdef SASL2_FOUND
static int kldap_sasl_interact( sasl_interact_t *interact, LdapOperation::SASL_Data *data )
{
  if ( data->proc ) {
    for ( ; interact->id != SASL_CB_LIST_END; interact++ ) {
      switch ( interact->id ) {
      case SASL_CB_GETREALM:
        data->creds.fields |= LdapOperation::SASL_Realm;
        break;
      case SASL_CB_AUTHNAME:
        data->creds.fields |= LdapOperation::SASL_Authname;
        break;
      case SASL_CB_PASS:
        data->creds.fields |= LdapOperation::SASL_Password;
        break;
      case SASL_CB_USER:
        data->creds.fields |= LdapOperation::SASL_Authzid;
        break;
      }
    }
    int retval;
    if ( ( retval = data->proc( data->creds, data->data ) ) ) {
      return retval;
    }
  }

  QString value;

  while ( interact->id != SASL_CB_LIST_END ) {
    value.clear();
    switch( interact->id ) {
    case SASL_CB_GETREALM:
      value = data->creds.realm;
      kDebug() << "SASL_REALM=" << value;
      break;
    case SASL_CB_AUTHNAME:
      value = data->creds.authname;
      kDebug() << "SASL_AUTHNAME=" << value;
      break;
    case SASL_CB_PASS:
      value = data->creds.password;
      kDebug() << "SASL_PASSWD=[hidden]";
      break;
    case SASL_CB_USER:
      value = data->creds.authzid;
      kDebug() << "SASL_AUTHZID=" << value;
      break;
    }
    if ( value.isEmpty() ) {
      interact->result = NULL;
      interact->len = 0;
    } else {
      interact->result = strdup( value.toUtf8() );
      interact->len = strlen( (const char *)interact->result );
    }
    interact++;
  }
  return KLDAP_SUCCESS;
}
#endif

int LdapOperation::LdapOperationPrivate::bind( const QByteArray &creds,
                                               SASL_Callback_Proc *saslproc,
                                               void *data, bool async )
{
  Q_ASSERT( mConnection );
  LDAP *ld = (LDAP*) mConnection->handle();
  LdapServer server;
  server = mConnection->server();

  int ret;

  if ( server.auth() == LdapServer::SASL ) {
#ifdef SASL2_FOUND
    sasl_conn_t *saslconn = (sasl_conn_t *)mConnection->saslHandle();
    sasl_interact_t *client_interact = NULL;
    const char *out = NULL;
    uint outlen;
    const char *mechusing = NULL;
    struct berval ccred, *scred;
    int saslresult;
    QByteArray sdata = creds;

    QString mech = server.mech();
    if ( mech.isEmpty() ) {
      mech = "DIGEST-MD5";
    }

    SASL_Data sasldata;
    sasldata.proc = saslproc;
    sasldata.data = data;
    sasldata.creds.fields = 0;
    sasldata.creds.realm = server.realm();
    sasldata.creds.authname = server.user();
    sasldata.creds.authzid = server.bindDn();
    sasldata.creds.password = server.password();

    do {
      if ( sdata.isEmpty() ) {
        do {
          saslresult = sasl_client_start( saslconn, mech.toLatin1(),
                                          &client_interact, &out, &outlen, &mechusing );

          if ( saslresult == SASL_INTERACT ) {
            if ( kldap_sasl_interact( client_interact, &sasldata ) != KLDAP_SUCCESS ) {
              return KLDAP_SASL_ERROR;
            }
          }
          kDebug() << "sasl_client_start mech: "
                   << mechusing << " outlen " << outlen
                   << " result: " << saslresult;
        } while ( saslresult == SASL_INTERACT );
        if ( saslresult != SASL_CONTINUE && saslresult != SASL_OK ) {
          return KLDAP_SASL_ERROR;
        }

      } else {
        kDebug() << "sasl_client_step";
        do {
          saslresult = sasl_client_step( saslconn, sdata.data(), sdata.size(),
                                         &client_interact, &out, &outlen );
          if ( saslresult == SASL_INTERACT ) {
            if ( kldap_sasl_interact( client_interact, &sasldata ) != KLDAP_SUCCESS ) {
              return KLDAP_SASL_ERROR;
            }
          }
        } while ( saslresult == SASL_INTERACT );
        kDebug() << "sasl_client_step result" << saslresult;
        if ( saslresult != SASL_CONTINUE && saslresult != SASL_OK ) {
          return KLDAP_SASL_ERROR;
        }
      }

      ccred.bv_val = (char*) out;
      ccred.bv_len = outlen;

      if ( async ) {
        kDebug() << "ldap_sasl_bind";
        int msgid;
        ret =
          ldap_sasl_bind( ld, server.bindDn().toUtf8().data(), mech.toLatin1(),
                          &ccred, 0, 0, &msgid );
        if ( ret == 0 ) {
          ret = msgid;
        }
        kDebug() << "ldap_sasl_bind msgid" << ret;
      } else {
        kDebug() << "ldap_sasl_bind_s";
        ret =
          ldap_sasl_bind_s( ld, server.bindDn().toUtf8().data(), mech.toLatin1(),
                            &ccred, 0, 0, &scred );
        kDebug() << "ldap_sasl_bind_s ret" << ret;
        if ( scred ) {
          sdata = QByteArray( scred->bv_val, scred->bv_len );
        } else {
          sdata = QByteArray();
        }
      }
    } while ( !async && ret == KLDAP_SASL_BIND_IN_PROGRESS );
#else
    kError() << "SASL authentication is not available "
             << "(re-compile kldap with cyrus-sasl development).";
    return KLDAP_SASL_ERROR;
#endif
  } else { //simple auth
    QByteArray bindname, pass;
    struct berval ccred;
    if ( server.auth() == LdapServer::Simple ) {
      bindname = server.bindDn().toUtf8();
      pass = server.password().toUtf8();
    }
    ccred.bv_val = pass.data();
    ccred.bv_len = pass.size();
    kDebug() << "binding to server, bindname: " << bindname << " password: *****";

    if ( async ) {
      kDebug() << "ldap_sasl_bind (simple)";
      int msgid;
      ret = ldap_sasl_bind( ld, bindname.data(), 0, &ccred, 0, 0, &msgid );
//    ret = ldap_simple_bind( ld, bindname.data(),pass.data() );
      if ( ret == 0 ) {
        ret = msgid;
      }
    } else {
      kDebug() << "ldap_sasl_bind_s (simple)";
      ret = ldap_sasl_bind_s( ld, bindname.data(), 0, &ccred, 0, 0, 0 );
//    ret = ldap_simple_bind_s( ld, bindname.data(), pass.data() );
    }
  }
  return ret;
}

int LdapOperation::LdapOperationPrivate::processResult( int rescode, LDAPMessage *msg )
{
  //kDebug();
  int retval;
  LDAP *ld = (LDAP*) mConnection->handle();

  kDebug() << "rescode: " << rescode;
  switch ( rescode ) {
  case RES_SEARCH_ENTRY:
  {
    //kDebug() << "Found search entry";
    mObject.clear();
    LdapAttrMap attrs;
    char *name;
    struct berval **bvals;
    BerElement     *entry;

    char *dn = ldap_get_dn( ld, msg );
    mObject.setDn( QString::fromUtf8( dn ) );
    ldap_memfree( dn );

    // iterate over the attributes
    name = ldap_first_attribute( ld, msg, &entry );
    while ( name != 0 ) {
      // print the values
      bvals = ldap_get_values_len( ld, msg, name );
      LdapAttrValue values;
      if ( bvals ) {
        for ( int i = 0; bvals[i] != 0; i++ ) {
          char *val = bvals[i]->bv_val;
          unsigned long len = bvals[i]->bv_len;
          values.append( QByteArray( val, len ) );
        }
        ldap_value_free_len( bvals );
      }
      attrs[ QString::fromLatin1( name ) ] = values;
      ldap_memfree( name );

      // next attribute
      name = ldap_next_attribute( ld, msg, entry );
    }
    ber_free( entry, 0 );
    mObject.setAttributes( attrs );
    break;
  }
  case RES_SEARCH_REFERENCE:
    // Will only get this if following references is disabled. ignore it
    rescode = 0;
    break;
  case RES_EXTENDED:
  {
    char *retoid;
    struct berval *retdata;
    retval = ldap_parse_extended_result( ld, msg, &retoid, &retdata, 0 );
    if ( retval != KLDAP_SUCCESS ) {
      ldap_msgfree( msg );
      return -1;
    }
    mExtOid = retoid ? QByteArray( retoid ) : QByteArray();
    mExtData = retdata ? QByteArray( retdata->bv_val, retdata->bv_len ) : QByteArray();
    ldap_memfree( retoid );
    ber_bvfree( retdata );
    break;
  }
  case RES_BIND:
  {
    struct berval *servercred;
    retval = ldap_parse_sasl_bind_result( ld, msg, &servercred, 0 );
    if ( retval != KLDAP_SUCCESS && retval != KLDAP_SASL_BIND_IN_PROGRESS ) {
      kDebug() << "RES_BIND error: " << retval;
      ldap_msgfree( msg );
      return -1;
    }
    kDebug() << "RES_BIND rescode" << rescode << "retval:" << retval;
    mServerCred = servercred ? QByteArray( servercred->bv_val, servercred->bv_len ) : QByteArray();
    ber_bvfree( servercred );
    break;
  }
  default:
  {
    LDAPControl **serverctrls = 0;
    char *matcheddn = 0, *errmsg = 0;
    char **referralsp;
    int errcodep;
    retval =
      ldap_parse_result( ld, msg, &errcodep, &matcheddn, &errmsg, &referralsp,
                         &serverctrls, 0 );
    kDebug() << "rescode" << rescode << "retval:" << retval
                 << "matcheddn:" << matcheddn << "errcode:"
                 << errcodep << "errmsg:" << errmsg;
    if ( retval != KLDAP_SUCCESS ) {
      ldap_msgfree( msg );
      return -1;
    }
    mControls.clear();
    if ( serverctrls ) {
      extractControls( mControls, serverctrls );
      ldap_controls_free( serverctrls );
    }
    mReferrals.clear();
    if ( referralsp ) {
      char **tmp = referralsp;
      while ( *tmp ) {
        mReferrals.append( QByteArray( *tmp ) );
        ldap_memfree( *tmp );
        tmp++;
      }
      ldap_memfree( (char *) referralsp );
    }
    mMatchedDn.clear();
    if ( matcheddn ) {
      mMatchedDn = QString::fromUtf8( matcheddn );
      ldap_memfree( matcheddn );
    }
    if ( errmsg ) {
      ldap_memfree( errmsg );
    }
  }
  }

  ldap_msgfree( msg );

  return rescode;
}

static void addModOp( LDAPMod ***pmods, int mod_type, const QString &attr,
                      const QByteArray *value = 0 )
{
  //  kDebug() << "type:" << mod_type << "attr:" << attr <<
  //    "value:" << QString::fromUtf8(value,value.size()) <<
  //    "size:" << value.size();
  LDAPMod **mods;

  mods = *pmods;

  uint i = 0;

  if ( mods == 0 ) {
    mods = (LDAPMod **)malloc( 2 * sizeof( LDAPMod * ) );
    mods[ 0 ] = (LDAPMod *)malloc( sizeof( LDAPMod ) );
    mods[ 1 ] = 0;
    memset( mods[ 0 ], 0, sizeof( LDAPMod ) );
  } else {
    while ( mods[ i ] != 0 &&
            ( strcmp( attr.toUtf8(), mods[i]->mod_type ) != 0 ||
              ( mods[ i ]->mod_op & ~LDAP_MOD_BVALUES ) != mod_type ) ) i++;

    if ( mods[ i ] == 0 ) {
      mods = (LDAPMod **)realloc( mods, ( i + 2 ) * sizeof( LDAPMod * ) );
      if ( mods == 0 ) {
        kError() << "addModOp: realloc";
        return;
      }
      mods[ i + 1 ] = 0;
      mods[ i ] = (LDAPMod *) malloc( sizeof( LDAPMod ) );
      memset( mods[ i ], 0, sizeof( LDAPMod ) );
    }
  }

  mods[ i ]->mod_op = mod_type | LDAP_MOD_BVALUES;
  if ( mods[ i ]->mod_type == 0 ) {
    mods[ i ]->mod_type = strdup( attr.toUtf8() );
  }

  *pmods = mods;

  if ( value == 0 ) {
    return;
  }

  int vallen = value->size();
  BerValue *berval;
  berval = (BerValue *) malloc( sizeof( BerValue ) );
  berval -> bv_len = vallen;
  if ( vallen > 0 ) {
    berval -> bv_val = (char *) malloc( vallen );
    memcpy( berval -> bv_val, value->data(), vallen );
  } else {
    berval -> bv_val = 0;
  }

  if ( mods[ i ] -> mod_vals.modv_bvals == 0 ) {
    mods[ i ]->mod_vals.modv_bvals =
      (BerValue **) malloc( sizeof( BerValue * ) * 2 );
    mods[ i ]->mod_vals.modv_bvals[ 0 ] = berval;
    mods[ i ]->mod_vals.modv_bvals[ 1 ] = 0;
//    kDebug() << "new bervalue struct" << attr << value;
  } else {
    uint j = 0;
    while ( mods[ i ]->mod_vals.modv_bvals[ j ] != 0 ) {
      j++;
    }
    mods[ i ]->mod_vals.modv_bvals =
      (BerValue **)realloc( mods[ i ]->mod_vals.modv_bvals,
                            ( j + 2 ) * sizeof( BerValue * ) );
    if ( mods[ i ]->mod_vals.modv_bvals == 0 ) {
      kError() << "addModOp: realloc";
      free( berval );
      return;
    }
    mods[ i ]->mod_vals.modv_bvals[ j ] = berval;
    mods[ i ]->mod_vals.modv_bvals[ j+1 ] = 0;
    kDebug() << j << ". new bervalue";
  }
}

static void addControlOp( LDAPControl ***pctrls, const QString &oid,
                          const QByteArray &value, bool critical )
{
  LDAPControl **ctrls;
  LDAPControl *ctrl = (LDAPControl *) malloc( sizeof( LDAPControl ) );

  ctrls = *pctrls;

  kDebug() << "oid:'" << oid << "' val: '" << value << "'";
  int vallen = value.size();
  ctrl->ldctl_value.bv_len = vallen;
  if ( vallen ) {
    ctrl->ldctl_value.bv_val = (char *) malloc( vallen );
    memcpy( ctrl->ldctl_value.bv_val, value.data(), vallen );
  } else {
    ctrl->ldctl_value.bv_val = 0;
  }
  ctrl->ldctl_iscritical = critical;
  ctrl->ldctl_oid = strdup( oid.toUtf8() );

  uint i = 0;

  if ( ctrls == 0 ) {
    ctrls = (LDAPControl **)malloc ( 2 * sizeof( LDAPControl * ) );
    ctrls[ 0 ] = 0;
    ctrls[ 1 ] = 0;
  } else {
    while ( ctrls[ i ] != 0 ) {
      i++;
    }
    ctrls[ i + 1 ] = 0;
    ctrls =
      (LDAPControl **)realloc( ctrls, ( i + 2 ) * sizeof( LDAPControl * ) );
  }
  ctrls[ i ] = ctrl;
  *pctrls = ctrls;
}

static void createControls( LDAPControl ***pctrls, const LdapControls &ctrls )
{
  for ( int i = 0; i< ctrls.count(); ++i ) {
    addControlOp( pctrls, ctrls[i].oid(), ctrls[i].value(), ctrls[i].critical() );
  }
}

static void extractControls( LdapControls &ctrls, LDAPControl **pctrls )
{
  LDAPControl *ctrl;
  LdapControl control;
  int i = 0;

  while ( pctrls[i] ) {
    ctrl = pctrls[ i ];
    control.setOid( QString::fromUtf8( ctrl->ldctl_oid ) );
    control.setValue( QByteArray( ctrl->ldctl_value.bv_val,
                                  ctrl->ldctl_value.bv_len ) );
    control.setCritical( ctrl->ldctl_iscritical );
    ctrls.append( control );
    i++;
  }
}

int LdapOperation::bind( const QByteArray &creds, SASL_Callback_Proc *saslproc, void *data )
{
  return d->bind( creds, saslproc, data, true );
}

int LdapOperation::bind_s( SASL_Callback_Proc *saslproc, void *data )
{
  return d->bind( QByteArray(), saslproc, data, false );
}

int LdapOperation::search( const LdapDN &base, LdapUrl::Scope scope,
                           const QString &filter, const QStringList &attributes )
{
  Q_ASSERT( d->mConnection );
  LDAP *ld = (LDAP*) d->mConnection->handle();

  char **attrs = 0;
  int msgid;

  LDAPControl **serverctrls = 0, **clientctrls = 0;
  createControls( &serverctrls, d->mServerCtrls );
  createControls( &serverctrls, d->mClientCtrls );

  int count = attributes.count();
  if ( count > 0 ) {
    attrs = static_cast<char**>( malloc( ( count + 1 ) * sizeof( char * ) ) );
    for ( int i=0; i<count; i++ ) {
      attrs[i] = strdup( attributes.at(i).toUtf8() );
    }
    attrs[count] = 0;
  }

  int lscope = LDAP_SCOPE_BASE;
  switch ( scope ) {
  case LdapUrl::Base:
    lscope = LDAP_SCOPE_BASE;
    break;
  case LdapUrl::One:
    lscope = LDAP_SCOPE_ONELEVEL;
    break;
  case LdapUrl::Sub:
    lscope = LDAP_SCOPE_SUBTREE;
    break;
  }

  kDebug() << "asyncSearch() base=\"" << base.toString()
           << "\" scope=" << (int)scope
           << "filter=\"" << filter
           << "\" attrs=" << attributes;
  int retval =
    ldap_search_ext( ld, base.toString().toUtf8().data(), lscope,
                     filter.isEmpty() ? QByteArray( "objectClass=*" ).data() :
                                        filter.toUtf8().data(),
                     attrs, 0, serverctrls, clientctrls, 0,
                     d->mConnection->sizeLimit(), &msgid );

  ldap_controls_free( serverctrls );
  ldap_controls_free( clientctrls );

  // free the attributes list again
  if ( count > 0 ) {
    for ( int i=0; i<count; i++ ) {
      free( attrs[i] );
    }
    free( attrs );
  }

  if ( retval == 0 ) {
    retval = msgid;
  }
  return retval;
}

int LdapOperation::add( const LdapObject &object )
{
  Q_ASSERT( d->mConnection );
  LDAP *ld = (LDAP*) d->mConnection->handle();

  int msgid;
  LDAPMod **lmod = 0;

  LDAPControl **serverctrls = 0, **clientctrls = 0;
  createControls( &serverctrls, d->mServerCtrls );
  createControls( &serverctrls, d->mClientCtrls );

  for ( LdapAttrMap::ConstIterator it = object.attributes().begin();
        it != object.attributes().end(); ++it ) {
    QString attr = it.key();
    for ( LdapAttrValue::ConstIterator it2 = (*it).begin(); it2 != (*it).end(); ++it2 ) {
      addModOp( &lmod, 0, attr, &(*it2) );
    }
  }

  int retval =
    ldap_add_ext( ld, object.dn().toString().toUtf8().data(), lmod, serverctrls,
                  clientctrls, &msgid );

  ldap_controls_free( serverctrls );
  ldap_controls_free( clientctrls );
  ldap_mods_free( lmod, 1 );
  if ( retval == 0 ) {
    retval = msgid;
  }
  return retval;
}

int LdapOperation::add_s( const LdapObject &object )
{
  Q_ASSERT( d->mConnection );
  LDAP *ld = (LDAP*) d->mConnection->handle();

  LDAPMod **lmod = 0;

  LDAPControl **serverctrls = 0, **clientctrls = 0;
  createControls( &serverctrls, d->mServerCtrls );
  createControls( &serverctrls, d->mClientCtrls );

  for ( LdapAttrMap::ConstIterator it = object.attributes().begin();
        it != object.attributes().end(); ++it ) {
    QString attr = it.key();
    for ( LdapAttrValue::ConstIterator it2 = (*it).begin(); it2 != (*it).end(); ++it2 ) {
      addModOp( &lmod, 0, attr, &(*it2) );
    }
  }

  int retval =
    ldap_add_ext_s( ld, object.dn().toString().toUtf8().data(), lmod, serverctrls,
                    clientctrls );

  ldap_controls_free( serverctrls );
  ldap_controls_free( clientctrls );
  ldap_mods_free( lmod, 1 );
  return retval;
}

int LdapOperation::add( const LdapDN &dn, const ModOps &ops )
{
  Q_ASSERT( d->mConnection );
  LDAP *ld = (LDAP*) d->mConnection->handle();

  int msgid;
  LDAPMod **lmod = 0;

  LDAPControl **serverctrls = 0, **clientctrls = 0;
  createControls( &serverctrls, d->mServerCtrls );
  createControls( &serverctrls, d->mClientCtrls );

  for ( int i = 0; i < ops.count(); ++i ) {
    for ( int j = 0; j < ops[i].values.count(); ++j ) {
      addModOp( &lmod, 0, ops[i].attr, &ops[i].values[j] );
    }
  }

  int retval =
    ldap_add_ext( ld, dn.toString().toUtf8().data(), lmod, serverctrls,
                  clientctrls, &msgid );

  ldap_controls_free( serverctrls );
  ldap_controls_free( clientctrls );
  ldap_mods_free( lmod, 1 );
  if ( retval == 0 ) {
    retval = msgid;
  }
  return retval;
}

int LdapOperation::add_s( const LdapDN &dn, const ModOps &ops )
{
  Q_ASSERT( d->mConnection );
  LDAP *ld = (LDAP*) d->mConnection->handle();

  LDAPMod **lmod = 0;

  LDAPControl **serverctrls = 0, **clientctrls = 0;
  createControls( &serverctrls, d->mServerCtrls );
  createControls( &serverctrls, d->mClientCtrls );

  for ( int i = 0; i < ops.count(); ++i ) {
    for ( int j = 0; j < ops[i].values.count(); ++j ) {
      addModOp( &lmod, 0, ops[i].attr, &ops[i].values[j] );
    }
  }
  kDebug() << dn.toString();
  int retval =
    ldap_add_ext_s( ld, dn.toString().toUtf8().data(), lmod, serverctrls,
                    clientctrls );

  ldap_controls_free( serverctrls );
  ldap_controls_free( clientctrls );
  ldap_mods_free( lmod, 1 );
  return retval;
}

int LdapOperation::rename( const LdapDN &dn, const QString &newRdn,
                           const QString &newSuperior, bool deleteold )
{
  Q_ASSERT( d->mConnection );
  LDAP *ld = (LDAP*) d->mConnection->handle();

  int msgid;

  LDAPControl **serverctrls = 0, **clientctrls = 0;
  createControls( &serverctrls, d->mServerCtrls );
  createControls( &serverctrls, d->mClientCtrls );

  int retval = ldap_rename( ld, dn.toString().toUtf8().data(), newRdn.toUtf8().data(),
                            newSuperior.isEmpty() ? (char *) 0 : newSuperior.toUtf8().data(),
                            deleteold, serverctrls, clientctrls, &msgid );

  ldap_controls_free( serverctrls );
  ldap_controls_free( clientctrls );

  if ( retval == 0 ) {
    retval = msgid;
  }
  return retval;
}

int LdapOperation::rename_s( const LdapDN &dn, const QString &newRdn,
                             const QString &newSuperior, bool deleteold )
{
  Q_ASSERT( d->mConnection );
  LDAP *ld = (LDAP*) d->mConnection->handle();

  LDAPControl **serverctrls = 0, **clientctrls = 0;
  createControls( &serverctrls, d->mServerCtrls );
  createControls( &serverctrls, d->mClientCtrls );

  int retval = ldap_rename_s( ld, dn.toString().toUtf8().data(), newRdn.toUtf8().data(),
                              newSuperior.isEmpty() ? (char *) 0 : newSuperior.toUtf8().data(),
                              deleteold, serverctrls, clientctrls );

  ldap_controls_free( serverctrls );
  ldap_controls_free( clientctrls );

  return retval;
}

int LdapOperation::del( const LdapDN &dn )
{
  Q_ASSERT( d->mConnection );
  LDAP *ld = (LDAP*) d->mConnection->handle();

  int msgid;

  LDAPControl **serverctrls = 0, **clientctrls = 0;
  createControls( &serverctrls, d->mServerCtrls );
  createControls( &serverctrls, d->mClientCtrls );

  int retval =
    ldap_delete_ext( ld, dn.toString().toUtf8().data(), serverctrls, clientctrls, &msgid );

  ldap_controls_free( serverctrls );
  ldap_controls_free( clientctrls );

  if ( retval == 0 ) {
    retval = msgid;
  }
  return retval;
}

int LdapOperation::del_s( const LdapDN &dn )
{
  Q_ASSERT( d->mConnection );
  LDAP *ld = (LDAP*) d->mConnection->handle();

  LDAPControl **serverctrls = 0, **clientctrls = 0;
  createControls( &serverctrls, d->mServerCtrls );
  createControls( &serverctrls, d->mClientCtrls );

  int retval = ldap_delete_ext_s( ld, dn.toString().toUtf8().data(), serverctrls, clientctrls );

  ldap_controls_free( serverctrls );
  ldap_controls_free( clientctrls );

  return retval;
}

int LdapOperation::modify( const LdapDN &dn, const ModOps &ops )
{
  Q_ASSERT( d->mConnection );
  LDAP *ld = (LDAP *)d->mConnection->handle();

  int msgid;
  LDAPMod **lmod = 0;

  LDAPControl **serverctrls = 0, **clientctrls = 0;
  createControls( &serverctrls, d->mServerCtrls );
  createControls( &serverctrls, d->mClientCtrls );

  for ( int i = 0; i < ops.count(); ++i ) {
    int mtype = 0;
    switch ( ops[i].type ) {
    case Mod_None:
      mtype = 0;
      break;
    case Mod_Add:
      mtype = LDAP_MOD_ADD;
      break;
    case Mod_Replace:
      mtype = LDAP_MOD_REPLACE;
      break;
    case Mod_Del:
      mtype = LDAP_MOD_DELETE;
      break;
    }
    addModOp( &lmod, mtype, ops[i].attr, 0 );
    for ( int j = 0; j < ops[i].values.count(); ++j ) {
      addModOp( &lmod, mtype, ops[i].attr, &ops[i].values[j] );
    }
  }

  int retval =
    ldap_modify_ext( ld, dn.toString().toUtf8().data(), lmod, serverctrls, clientctrls, &msgid );

  ldap_controls_free( serverctrls );
  ldap_controls_free( clientctrls );
  ldap_mods_free( lmod, 1 );
  if ( retval == 0 ) {
    retval = msgid;
  }
  return retval;
}

int LdapOperation::modify_s( const LdapDN &dn, const ModOps &ops )
{
  Q_ASSERT( d->mConnection );
  LDAP *ld = (LDAP*) d->mConnection->handle();

  LDAPMod **lmod = 0;

  LDAPControl **serverctrls = 0, **clientctrls = 0;
  createControls( &serverctrls, d->mServerCtrls );
  createControls( &serverctrls, d->mClientCtrls );

  for ( int i = 0; i < ops.count(); ++i ) {
    int mtype = 0;
    switch ( ops[i].type ) {
    case Mod_None:
      mtype = 0;
      break;
    case Mod_Add:
      mtype = LDAP_MOD_ADD;
      break;
    case Mod_Replace:
      mtype = LDAP_MOD_REPLACE;
      break;
    case Mod_Del:
      mtype = LDAP_MOD_DELETE;
      break;
    }
    addModOp( &lmod, mtype, ops[i].attr, 0 );
    for ( int j = 0; j < ops[i].values.count(); ++j ) {
      addModOp( &lmod, mtype, ops[i].attr, &ops[i].values[j] );
    }
  }

  int retval =
    ldap_modify_ext_s( ld, dn.toString().toUtf8().data(), lmod, serverctrls, clientctrls );

  ldap_controls_free( serverctrls );
  ldap_controls_free( clientctrls );
  ldap_mods_free( lmod, 1 );
  return retval;
}

int LdapOperation::compare( const LdapDN &dn, const QString &attr, const QByteArray &value )
{
  Q_ASSERT( d->mConnection );
  LDAP *ld = (LDAP*) d->mConnection->handle();
  int msgid;

  LDAPControl **serverctrls = 0, **clientctrls = 0;
  createControls( &serverctrls, d->mServerCtrls );
  createControls( &serverctrls, d->mClientCtrls );

  int vallen = value.size();
  BerValue *berval;
  berval = (BerValue *) malloc( sizeof( BerValue ) );
  berval -> bv_val = (char *) malloc( vallen );
  berval -> bv_len = vallen;
  memcpy( berval -> bv_val, value.data(), vallen );

  int retval = ldap_compare_ext( ld, dn.toString().toUtf8().data(), attr.toUtf8().data(), berval,
                                 serverctrls, clientctrls, &msgid );

  ber_bvfree( berval );
  ldap_controls_free( serverctrls );
  ldap_controls_free( clientctrls );

  if ( retval == 0 ) {
    retval = msgid;
  }
  return retval;
}

int LdapOperation::compare_s( const LdapDN &dn, const QString &attr, const QByteArray &value )
{
  Q_ASSERT( d->mConnection );
  LDAP *ld = (LDAP*) d->mConnection->handle();

  LDAPControl **serverctrls = 0, **clientctrls = 0;
  createControls( &serverctrls, d->mServerCtrls );
  createControls( &serverctrls, d->mClientCtrls );

  int vallen = value.size();
  BerValue *berval;
  berval = (BerValue *) malloc( sizeof( BerValue ) );
  berval -> bv_val = (char *) malloc( vallen );
  berval -> bv_len = vallen;
  memcpy( berval -> bv_val, value.data(), vallen );

  int retval = ldap_compare_ext_s( ld, dn.toString().toUtf8().data(), attr.toUtf8().data(), berval,
                                   serverctrls, clientctrls );

  ber_bvfree( berval );
  ldap_controls_free( serverctrls );
  ldap_controls_free( clientctrls );

  return retval;
}

int LdapOperation::exop( const QString &oid, const QByteArray &data )
{
  Q_ASSERT( d->mConnection );
#if defined(HAVE_LDAP_EXTENDED_OPERATION) && defined(HAVE_LDAP_EXTENDED_OPERATION_PROTOTYPE)
  LDAP *ld = (LDAP*) d->mConnection->handle();
  int msgid;

  LDAPControl **serverctrls = 0, **clientctrls = 0;
  createControls( &serverctrls, d->mServerCtrls );
  createControls( &serverctrls, d->mClientCtrls );

  int vallen = data.size();
  BerValue *berval;
  berval = (BerValue *) malloc( sizeof( BerValue ) );
  berval -> bv_val = (char *) malloc( vallen );
  berval -> bv_len = vallen;
  memcpy( berval -> bv_val, data.data(), vallen );

  int retval = ldap_extended_operation( ld, oid.toUtf8().data(), berval,
                                        serverctrls, clientctrls, &msgid );

  ber_bvfree( berval );
  ldap_controls_free( serverctrls );
  ldap_controls_free( clientctrls );

  if ( retval == 0 ) {
    retval = msgid;
  }
  return retval;
#else
  kError() << "Your LDAP client libraries don't support extended operations.";
  return -1;
#endif
}

int LdapOperation::exop_s( const QString &oid, const QByteArray &data )
{
#if defined(HAVE_LDAP_EXTENDED_OPERATION) && defined(HAVE_LDAP_EXTENDED_OPERATION_PROTOTYPE)
  Q_ASSERT( d->mConnection );
  LDAP *ld = (LDAP*) d->mConnection->handle();
  BerValue *retdata;
  char *retoid;

  LDAPControl **serverctrls = 0, **clientctrls = 0;
  createControls( &serverctrls, d->mServerCtrls );
  createControls( &serverctrls, d->mClientCtrls );

  int vallen = data.size();
  BerValue *berval;
  berval = (BerValue *) malloc( sizeof( BerValue ) );
  berval -> bv_val = (char *) malloc( vallen );
  berval -> bv_len = vallen;
  memcpy( berval -> bv_val, data.data(), vallen );

  int retval = ldap_extended_operation_s( ld, oid.toUtf8().data(), berval,
                                          serverctrls, clientctrls, &retoid, &retdata );

  ber_bvfree( berval );
  ber_bvfree( retdata );
  free( retoid );
  ldap_controls_free( serverctrls );
  ldap_controls_free( clientctrls );

  return retval;
#else
  kError() << "Your LDAP client libraries don't support extended operations.";
  return -1;
#endif
}

int LdapOperation::abandon( int id )
{
  Q_ASSERT( d->mConnection );
  LDAP *ld = (LDAP*) d->mConnection->handle();

  LDAPControl **serverctrls = 0, **clientctrls = 0;
  createControls( &serverctrls, d->mServerCtrls );
  createControls( &serverctrls, d->mClientCtrls );

  int retval = ldap_abandon_ext( ld, id, serverctrls, clientctrls );

  ldap_controls_free( serverctrls );
  ldap_controls_free( clientctrls );

  return retval;
}

int LdapOperation::waitForResult( int id, int msecs )
{
  Q_ASSERT( d->mConnection );
  LDAP *ld = (LDAP*) d->mConnection->handle();

  LDAPMessage *msg;
  int rescode;

  QTime stopWatch;
  stopWatch.start();
  int attempt( 1 );
  int timeout( 0 );

  do {
    // Calculate the timeout value to use and assign it to a timeval structure
    // see man select (2) for details
    timeout = kldap_timeout_value( msecs, stopWatch.elapsed() );
    kDebug() << "(" << id << "," << msecs
             << "): Waiting" << timeout
             << "msecs for result. Attempt #" << attempt++;
    struct timeval tv;
    tv.tv_sec = timeout / 1000;
    tv.tv_usec = ( timeout % 1000 ) * 1000;

    // Wait for a result
    rescode = ldap_result( ld, id, 0, timeout < 0 ? 0 : &tv, &msg );
    if ( rescode == -1 ) {
      return -1;
    }
    // Act on the return code
    if ( rescode != 0 ) {
      // Some kind of result is available for processing
      return d->processResult( rescode, msg );
    }
  } while ( msecs == -1 || stopWatch.elapsed() < msecs );

  return 0; //timeout
}

#else

int LdapOperation::bind( const QByteArray &creds, SASL_Callback_Proc *saslproc, void *data )
{
  kError() << "LDAP support not compiled";
  return -1;
}

int LdapOperation::bind_s( SASL_Callback_Proc *saslproc, void *data )
{
  kError() << "LDAP support not compiled";
  return -1;
}

int LdapOperation::search( const LdapDN &base, LdapUrl::Scope scope,
                           const QString &filter, const QStringList &attributes )
{
  kError() << "LDAP support not compiled";
  return -1;
}

int LdapOperation::add( const LdapObject &object )
{
  kError() << "LDAP support not compiled";
  return -1;
}

int LdapOperation::add_s( const LdapObject &object )
{
  kError() << "LDAP support not compiled";
  return -1;
}

int LdapOperation::add( const LdapDN &dn, const ModOps &ops )
{
  kError() << "LDAP support not compiled";
  return -1;
}

int LdapOperation::add_s( const LdapDN &dn, const ModOps &ops )
{
  kError() << "LDAP support not compiled";
  return -1;
}

int LdapOperation::rename( const LdapDN &dn, const QString &newRdn,
                           const QString &newSuperior, bool deleteold )
{
  kError() << "LDAP support not compiled";
  return -1;
}

int LdapOperation::rename_s( const LdapDN &dn, const QString &newRdn,
                             const QString &newSuperior, bool deleteold )
{
  kError() << "LDAP support not compiled";
  return -1;
}

int LdapOperation::del( const LdapDN &dn )
{
  kError() << "LDAP support not compiled";
  return -1;
}

int LdapOperation::del_s( const LdapDN &dn )
{
  kError() << "LDAP support not compiled";
  return -1;
}

int LdapOperation::modify( const LdapDN &dn, const ModOps &ops )
{
  kError() << "LDAP support not compiled";
  return -1;
}

int LdapOperation::modify_s( const LdapDN &dn, const ModOps &ops )
{
  kError() << "LDAP support not compiled";
  return -1;
}

int LdapOperation::compare( const LdapDN &dn, const QString &attr, const QByteArray &value )
{
  kError() << "LDAP support not compiled";
  return -1;
}

int LdapOperation::exop( const QString &oid, const QByteArray &data )
{
  kError() << "LDAP support not compiled";
  return -1;
}

int LdapOperation::compare_s( const LdapDN &dn, const QString &attr, const QByteArray &value )
{
  kError() << "LDAP support not compiled";
  return -1;
}

int LdapOperation::exop_s( const QString &oid, const QByteArray &data )
{
  kError() << "LDAP support not compiled";
  return -1;
}

int LdapOperation::waitForResult( int id, int msecs )
{
  kError() << "LDAP support not compiled";
  return -1;
}

int LdapOperation::abandon( int id )
{
  kError() << "LDAP support not compiled";
  return -1;
}

#endif
