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585 lines
15 KiB
C
585 lines
15 KiB
C
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Communicator client code, released
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* March 31, 1998.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998-1999
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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* Copyright (c) 1990, 1994 Regents of the University of Michigan.
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* All rights reserved.
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*/
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/*
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* cldap.c - synchronous, retrying interface to the cldap protocol
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*/
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#ifdef CLDAP
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XXX not MT-safe XXX
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#ifndef lint
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static char copyright[] = "@(#) Copyright (c) 1990, 1994 Regents of the University of Michigan.\nAll rights reserved.\n";
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#endif
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#ifdef macintosh
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#include <stdlib.h>
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#include "macos.h"
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#else /* macintosh */
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#ifdef DOS
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#include "msdos.h"
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#else /* DOS */
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#ifdef _WINDOWS
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#include <windows.h>
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#else /* _WINDOWS */
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#include <sys/time.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <netdb.h>
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#endif /* _WINDOWS */
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#endif /* DOS */
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#endif /* macintosh */
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#include "ldap-int.h"
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#define DEF_CLDAP_TIMEOUT 3
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#define DEF_CLDAP_TRIES 4
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#ifndef INADDR_LOOPBACK
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#define INADDR_LOOPBACK ((unsigned long) 0x7f000001)
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#endif
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struct cldap_retinfo {
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int cri_maxtries;
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int cri_try;
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int cri_useaddr;
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long cri_timeout;
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};
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#ifdef NEEDPROTOS
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static int add_addr( LDAP *ld, struct sockaddr *sap );
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static int cldap_result( LDAP *ld, int msgid, LDAPMessage **res,
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struct cldap_retinfo *crip, char *base );
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static int cldap_parsemsg( LDAP *ld, int msgid, BerElement *ber,
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LDAPMessage **res, char *base );
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#else /* NEEDPROTOS */
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static int add_addr();
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static int cldap_result();
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static int cldap_parsemsg();
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#endif /* NEEDPROTOS */
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/*
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* cldap_open - initialize and connect to an ldap server. A magic cookie to
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* be used for future communication is returned on success, NULL on failure.
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*
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* Example:
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* LDAP *ld;
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* ld = cldap_open( hostname, port );
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*/
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LDAP *
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cldap_open( char *host, int port )
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{
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int s;
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ldap_x_in_addr_t address;
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struct sockaddr_in sock;
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struct hostent *hp;
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LDAP *ld;
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char *p;
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int i;
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LDAPDebug( LDAP_DEBUG_TRACE, "cldap_open\n", 0, 0, 0 );
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if ( port == 0 ) {
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port = LDAP_PORT;
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}
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if ( (s = socket( AF_INET, SOCK_DGRAM, 0 )) < 0 ) {
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return( NULL );
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}
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sock.sin_addr.s_addr = 0;
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sock.sin_family = AF_INET;
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sock.sin_port = 0;
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if ( bind(s, (struct sockaddr *) &sock, sizeof(sock)) < 0) {
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close( s );
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return( NULL );
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}
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if (( ld = ldap_init( host, port )) == NULL ) {
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close( s );
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return( NULL );
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}
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if ( (ld->ld_sbp->sb_fromaddr = (void *)NSLDAPI_CALLOC( 1,
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sizeof( struct sockaddr ))) == NULL ) {
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NSLDAPI_FREE( ld );
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close( s );
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return( NULL );
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}
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ld->ld_sbp->sb_sd = s;
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ld->ld_sbp->sb_naddr = 0;
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ld->ld_version = LDAP_VERSION;
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sock.sin_family = AF_INET;
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sock.sin_port = htons( port );
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/*
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* 'host' may be a space-separated list.
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*/
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if ( host != NULL ) {
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for ( ; host != NULL; host = p ) {
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if (( p = strchr( host, ' ' )) != NULL ) {
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for (*p++ = '\0'; *p == ' '; p++) {
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;
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}
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}
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if ( (address = inet_addr( host )) == -1 ) {
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/* XXXmcs: need to use DNS callbacks here XXX */
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XXX
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if ( (hp = gethostbyname( host )) == NULL ) {
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LDAP_SET_ERRNO( ld, EHOSTUNREACH );
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continue;
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}
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for ( i = 0; hp->h_addr_list[ i ] != 0; ++i ) {
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SAFEMEMCPY( (char *)&sock.sin_addr.s_addr,
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(char *)hp->h_addr_list[ i ],
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sizeof(sock.sin_addr.s_addr));
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if ( add_addr( ld, (struct sockaddr *)&sock ) < 0 ) {
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close( s );
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NSLDAPI_FREE( ld );
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return( NULL );
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}
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}
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} else {
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sock.sin_addr.s_addr = address;
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if ( add_addr( ld, (struct sockaddr *)&sock ) < 0 ) {
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close( s );
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NSLDAPI_FREE( ld );
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return( NULL );
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}
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}
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if ( ld->ld_host == NULL ) {
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ld->ld_host = nsldapi_strdup( host );
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}
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}
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} else {
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address = INADDR_LOOPBACK;
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sock.sin_addr.s_addr = htonl( address );
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if ( add_addr( ld, (struct sockaddr *)&sock ) < 0 ) {
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close( s );
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NSLDAPI_FREE( ld );
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return( NULL );
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}
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}
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if ( ld->ld_sbp->sb_addrs == NULL
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|| ( ld->ld_defconn = nsldapi_new_connection( ld, NULL, 1,0,0 )) == NULL ) {
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NSLDAPI_FREE( ld );
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return( NULL );
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}
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ld->ld_sbp->sb_useaddr = ld->ld_sbp->sb_addrs[ 0 ];
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cldap_setretryinfo( ld, 0, 0 );
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#ifdef LDAP_DEBUG
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putchar( '\n' );
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for ( i = 0; i < ld->ld_sbp->sb_naddr; ++i ) {
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LDAPDebug( LDAP_DEBUG_TRACE, "end of cldap_open address %d is %s\n",
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i, inet_ntoa( ((struct sockaddr_in *)
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ld->ld_sbp->sb_addrs[ i ])->sin_addr ), 0 );
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}
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#endif
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return( ld );
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}
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void
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cldap_close( LDAP *ld )
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{
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ldap_ld_free( ld, NULL, NULL, 0 );
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}
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void
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cldap_setretryinfo( LDAP *ld, int tries, int timeout )
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{
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ld->ld_cldaptries = ( tries <= 0 ) ? DEF_CLDAP_TRIES : tries;
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ld->ld_cldaptimeout = ( timeout <= 0 ) ? DEF_CLDAP_TIMEOUT : timeout;
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}
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int
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cldap_search_s( LDAP *ld, char *base, int scope, char *filter, char **attrs,
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int attrsonly, LDAPMessage **res, char *logdn )
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{
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int ret, msgid;
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struct cldap_retinfo cri;
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*res = NULLMSG;
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(void) memset( &cri, 0, sizeof( cri ));
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if ( logdn != NULL ) {
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ld->ld_cldapdn = logdn;
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} else if ( ld->ld_cldapdn == NULL ) {
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ld->ld_cldapdn = "";
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}
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do {
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if ( cri.cri_try != 0 ) {
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--ld->ld_msgid; /* use same id as before */
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}
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ld->ld_sbp->sb_useaddr = ld->ld_sbp->sb_addrs[ cri.cri_useaddr ];
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LDAPDebug( LDAP_DEBUG_TRACE, "cldap_search_s try %d (to %s)\n",
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cri.cri_try, inet_ntoa( ((struct sockaddr_in *)
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ld->ld_sbp->sb_useaddr)->sin_addr ), 0 );
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if ( (msgid = ldap_search( ld, base, scope, filter, attrs,
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attrsonly )) == -1 ) {
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return( LDAP_GET_LDERRNO( ld, NULL, NULL ) );
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}
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#ifndef NO_CACHE
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if ( ld->ld_cache != NULL && ld->ld_responses != NULL ) {
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LDAPDebug( LDAP_DEBUG_TRACE, "cldap_search_s res from cache\n",
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0, 0, 0 );
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*res = ld->ld_responses;
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ld->ld_responses = ld->ld_responses->lm_next;
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return( ldap_result2error( ld, *res, 0 ));
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}
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#endif /* NO_CACHE */
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ret = cldap_result( ld, msgid, res, &cri, base );
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} while (ret == -1);
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return( ret );
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}
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static int
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add_addr( LDAP *ld, struct sockaddr *sap )
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{
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struct sockaddr *newsap, **addrs;
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if (( newsap = (struct sockaddr *)NSLDAPI_MALLOC(
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sizeof( struct sockaddr ))) == NULL ) {
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LDAP_SET_LDERRNO( ld, LDAP_NO_MEMORY, NULL, NULL );
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return( -1 );
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}
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if ( ld->ld_sbp->sb_naddr == 0 ) {
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addrs = (struct sockaddr **)NSLDAPI_MALLOC( sizeof(struct sockaddr *));
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} else {
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addrs = (struct sockaddr **)NSLDAPI_REALLOC( ld->ld_sbp->sb_addrs,
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( ld->ld_sbp->sb_naddr + 1 ) * sizeof(struct sockaddr *));
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}
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if ( addrs == NULL ) {
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NSLDAPI_FREE( newsap );
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LDAP_SET_LDERRNO( ld, LDAP_NO_MEMORY, NULL, NULL );
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return( -1 );
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}
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SAFEMEMCPY( (char *)newsap, (char *)sap, sizeof( struct sockaddr ));
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addrs[ ld->ld_sbp->sb_naddr++ ] = newsap;
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ld->ld_sbp->sb_addrs = (void **)addrs;
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return( 0 );
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}
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static int
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cldap_result( LDAP *ld, int msgid, LDAPMessage **res,
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struct cldap_retinfo *crip, char *base )
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{
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Sockbuf *sb = ld->ld_sbp;
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BerElement ber;
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char *logdn;
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int ret, fromaddr, i;
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long id;
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struct timeval tv;
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fromaddr = -1;
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if ( crip->cri_try == 0 ) {
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crip->cri_maxtries = ld->ld_cldaptries * sb->sb_naddr;
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crip->cri_timeout = ld->ld_cldaptimeout;
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crip->cri_useaddr = 0;
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LDAPDebug( LDAP_DEBUG_TRACE, "cldap_result tries %d timeout %d\n",
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ld->ld_cldaptries, ld->ld_cldaptimeout, 0 );
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}
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if ((tv.tv_sec = crip->cri_timeout / sb->sb_naddr) < 1 ) {
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tv.tv_sec = 1;
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}
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tv.tv_usec = 0;
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LDAPDebug( LDAP_DEBUG_TRACE,
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"cldap_result waiting up to %d seconds for a response\n",
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tv.tv_sec, 0, 0 );
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ber_init_w_nullchar( &ber, 0 );
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nsldapi_set_ber_options( ld, &ber );
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if ( cldap_getmsg( ld, &tv, &ber ) == -1 ) {
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ret = LDAP_GET_LDERRNO( ld, NULL, NULL );
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LDAPDebug( LDAP_DEBUG_TRACE, "cldap_getmsg returned -1 (%d)\n",
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ret, 0, 0 );
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} else if ( LDAP_GET_LDERRNO( ld, NULL, NULL ) == LDAP_TIMEOUT ) {
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LDAPDebug( LDAP_DEBUG_TRACE,
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"cldap_result timed out\n", 0, 0, 0 );
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/*
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* It timed out; is it time to give up?
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*/
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if ( ++crip->cri_try >= crip->cri_maxtries ) {
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ret = LDAP_TIMEOUT;
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--crip->cri_try;
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} else {
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if ( ++crip->cri_useaddr >= sb->sb_naddr ) {
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/*
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* new round: reset address to first one and
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* double the timeout
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*/
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crip->cri_useaddr = 0;
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crip->cri_timeout <<= 1;
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}
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ret = -1;
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}
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} else {
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/*
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* Got a response. It should look like:
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* { msgid, logdn, { searchresponse...}}
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*/
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logdn = NULL;
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if ( ber_scanf( &ber, "ia", &id, &logdn ) == LBER_ERROR ) {
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NSLDAPI_FREE( ber.ber_buf ); /* gack! */
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ret = LDAP_DECODING_ERROR;
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LDAPDebug( LDAP_DEBUG_TRACE,
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"cldap_result: ber_scanf returned LBER_ERROR (%d)\n",
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ret, 0, 0 );
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} else if ( id != msgid ) {
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NSLDAPI_FREE( ber.ber_buf ); /* gack! */
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LDAPDebug( LDAP_DEBUG_TRACE,
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"cldap_result: looking for msgid %d; got %ld\n",
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msgid, id, 0 );
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ret = -1; /* ignore and keep looking */
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} else {
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/*
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* got a result: determine which server it came from
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* decode into ldap message chain
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*/
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for ( fromaddr = 0; fromaddr < sb->sb_naddr; ++fromaddr ) {
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if ( memcmp( &((struct sockaddr_in *)
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sb->sb_addrs[ fromaddr ])->sin_addr,
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&((struct sockaddr_in *)sb->sb_fromaddr)->sin_addr,
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sizeof( struct in_addr )) == 0 ) {
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break;
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}
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}
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ret = cldap_parsemsg( ld, msgid, &ber, res, base );
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NSLDAPI_FREE( ber.ber_buf ); /* gack! */
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LDAPDebug( LDAP_DEBUG_TRACE,
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"cldap_result got result (%d)\n", ret, 0, 0 );
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}
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if ( logdn != NULL ) {
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NSLDAPI_FREE( logdn );
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}
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}
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/*
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* If we are giving up (successfully or otherwise) then
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* abandon any outstanding requests.
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*/
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if ( ret != -1 ) {
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i = crip->cri_try;
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if ( i >= sb->sb_naddr ) {
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i = sb->sb_naddr - 1;
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}
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for ( ; i >= 0; --i ) {
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if ( i == fromaddr ) {
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continue;
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}
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sb->sb_useaddr = sb->sb_addrs[ i ];
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LDAPDebug( LDAP_DEBUG_TRACE, "cldap_result abandoning id %d (to %s)\n",
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msgid, inet_ntoa( ((struct sockaddr_in *)
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sb->sb_useaddr)->sin_addr ), 0 );
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(void) ldap_abandon( ld, msgid );
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}
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}
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LDAP_SET_LDERRNO( ld, ret, NULL, NULL );
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return( ret );
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}
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static int
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cldap_parsemsg( LDAP *ld, int msgid, BerElement *ber,
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LDAPMessage **res, char *base )
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{
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unsigned long tag, len;
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int baselen, slen, rc;
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char *dn, *p, *cookie;
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LDAPMessage *chain, *prev, *ldm;
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struct berval *bv;
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rc = LDAP_DECODING_ERROR; /* pessimistic */
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ldm = chain = prev = NULLMSG;
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baselen = ( base == NULL ) ? 0 : strlen( base );
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bv = NULL;
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for ( tag = ber_first_element( ber, &len, &cookie );
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tag != LBER_ERROR && tag != LBER_END_OF_SEQOFSET
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&& rc != LDAP_SUCCESS;
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tag = ber_next_element( ber, &len, cookie )) {
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if (( ldm = (LDAPMessage *)NSLDAPI_CALLOC( 1, sizeof(LDAPMessage)))
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== NULL ) {
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rc = LDAP_NO_MEMORY;
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break; /* return with error */
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} else if (( rc = nsldapi_alloc_ber_with_options( ld, &ldm->lm_ber ))
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!= LDAP_SUCCESS ) {
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break; /* return with error*/
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}
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ldm->lm_msgid = msgid;
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ldm->lm_msgtype = tag;
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if ( tag == LDAP_RES_SEARCH_RESULT ) {
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LDAPDebug( LDAP_DEBUG_TRACE, "cldap_parsemsg got search result\n",
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0, 0, 0 );
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if ( ber_get_stringal( ber, &bv ) == LBER_DEFAULT ) {
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break; /* return w/error */
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}
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if ( ber_printf( ldm->lm_ber, "to", tag, bv->bv_val,
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(int)bv->bv_len /* XXX lossy cast */ ) == -1 ) {
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break; /* return w/error */
|
|
}
|
|
ber_bvfree( bv );
|
|
bv = NULL;
|
|
rc = LDAP_SUCCESS;
|
|
|
|
} else if ( tag == LDAP_RES_SEARCH_ENTRY ) {
|
|
if ( ber_scanf( ber, "{aO", &dn, &bv ) == LBER_ERROR ) {
|
|
break; /* return w/error */
|
|
}
|
|
LDAPDebug( LDAP_DEBUG_TRACE, "cldap_parsemsg entry %s\n", dn, 0, 0 );
|
|
if ( dn != NULL && *(dn + ( slen = strlen(dn)) - 1) == '*' &&
|
|
baselen > 0 ) {
|
|
/*
|
|
* substitute original searchbase for trailing '*'
|
|
*/
|
|
if (( p = (char *)NSLDAPI_MALLOC( slen + baselen )) == NULL ) {
|
|
rc = LDAP_NO_MEMORY;
|
|
NSLDAPI_FREE( dn );
|
|
break; /* return w/error */
|
|
}
|
|
strcpy( p, dn );
|
|
strcpy( p + slen - 1, base );
|
|
NSLDAPI_FREE( dn );
|
|
dn = p;
|
|
}
|
|
|
|
if ( ber_printf( ldm->lm_ber, "t{so}", tag, dn, bv->bv_val,
|
|
(int)bv->bv_len /* XXX lossy cast */ ) == -1 ) {
|
|
break; /* return w/error */
|
|
}
|
|
NSLDAPI_FREE( dn );
|
|
ber_bvfree( bv );
|
|
bv = NULL;
|
|
|
|
} else {
|
|
LDAPDebug( LDAP_DEBUG_TRACE, "cldap_parsemsg got unknown tag %d\n",
|
|
tag, 0, 0 );
|
|
rc = LDAP_PROTOCOL_ERROR;
|
|
break; /* return w/error */
|
|
}
|
|
|
|
/* Reset message ber so we can read from it later. Gack! */
|
|
ldm->lm_ber->ber_end = ldm->lm_ber->ber_ptr;
|
|
ldm->lm_ber->ber_ptr = ldm->lm_ber->ber_buf;
|
|
|
|
#ifdef LDAP_DEBUG
|
|
if ( ldap_debug & LDAP_DEBUG_PACKETS ) {
|
|
char msg[80];
|
|
sprintf( msg, "cldap_parsemsg add message id %d type %d:\n",
|
|
ldm->lm_msgid, ldm->lm_msgtype );
|
|
ber_err_print( msg );
|
|
ber_dump( ldm->lm_ber, 1 );
|
|
}
|
|
#endif /* LDAP_DEBUG */
|
|
|
|
#ifndef NO_CACHE
|
|
if ( ld->ld_cache != NULL ) {
|
|
nsldapi_add_result_to_cache( ld, ldm );
|
|
}
|
|
#endif /* NO_CACHE */
|
|
|
|
if ( chain == NULL ) {
|
|
chain = ldm;
|
|
} else {
|
|
prev->lm_chain = ldm;
|
|
}
|
|
prev = ldm;
|
|
ldm = NULL;
|
|
}
|
|
|
|
/* dispose of any leftovers */
|
|
if ( ldm != NULL ) {
|
|
if ( ldm->lm_ber != NULLBER ) {
|
|
ber_free( ldm->lm_ber, 1 );
|
|
}
|
|
NSLDAPI_FREE( ldm );
|
|
}
|
|
if ( bv != NULL ) {
|
|
ber_bvfree( bv );
|
|
}
|
|
|
|
/* return chain, calling result2error if we got anything at all */
|
|
*res = chain;
|
|
return(( *res == NULLMSG ) ? rc : ldap_result2error( ld, *res, 0 ));
|
|
}
|
|
#endif /* CLDAP */
|