openldap/libraries/libldap/open.c

319 lines
6.8 KiB
C

/* $OpenLDAP$ */
/*
* Copyright 1998-1999 The OpenLDAP Foundation, All Rights Reserved.
* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
*/
/* Portions
* Copyright (c) 1995 Regents of the University of Michigan.
* All rights reserved.
*
* open.c
*/
#include "portable.h"
#include <stdio.h>
#include <ac/stdlib.h>
#include <ac/param.h>
#include <ac/socket.h>
#include <ac/string.h>
#include <ac/time.h>
#include "ldap-int.h"
int ldap_open_defconn( LDAP *ld )
{
if (( ld->ld_defconn = ldap_new_connection( ld, ld->ld_options.ldo_defludp, 1,1,0 )) == NULL )
{
ld->ld_errno = LDAP_SERVER_DOWN;
return -1;
}
++ld->ld_defconn->lconn_refcnt; /* so it never gets closed/freed */
return 0;
}
/*
* ldap_open - initialize and connect to an ldap server. A magic cookie to
* be used for future communication is returned on success, NULL on failure.
* "host" may be a space-separated list of hosts or IP addresses
*
* Example:
* LDAP *ld;
* ld = ldap_open( hostname, port );
*/
LDAP *
ldap_open( LDAP_CONST char *host, int port )
{
int rc;
LDAP *ld;
Debug( LDAP_DEBUG_TRACE, "ldap_open\n", 0, 0, 0 );
if (( ld = ldap_init( host, port )) == NULL ) {
return( NULL );
}
rc = ldap_open_defconn( ld );
if( rc < 0 ) {
ldap_ld_free( ld, 0, NULL, NULL );
return( NULL );
}
Debug( LDAP_DEBUG_TRACE, "ldap_open successful, ld_host is %s\n",
( ld->ld_host == NULL ) ? "(null)" : ld->ld_host, 0, 0 );
return( ld );
}
int
ldap_create( LDAP **ldp )
{
LDAP *ld;
*ldp = NULL;
if( ldap_int_global_options.ldo_valid != LDAP_INITIALIZED ) {
ldap_int_initialize();
}
Debug( LDAP_DEBUG_TRACE, "ldap_init\n", 0, 0, 0 );
#ifdef HAVE_WINSOCK2
{ WORD wVersionRequested;
WSADATA wsaData;
wVersionRequested = MAKEWORD( 2, 0 );
if ( WSAStartup( wVersionRequested, &wsaData ) != 0 ) {
/* Tell the user that we couldn't find a usable */
/* WinSock DLL. */
return LDAP_LOCAL_ERROR;
}
/* Confirm that the WinSock DLL supports 2.0.*/
/* Note that if the DLL supports versions greater */
/* than 2.0 in addition to 2.0, it will still return */
/* 2.0 in wVersion since that is the version we */
/* requested. */
if ( LOBYTE( wsaData.wVersion ) != 2 ||
HIBYTE( wsaData.wVersion ) != 0 )
{
/* Tell the user that we couldn't find a usable */
/* WinSock DLL. */
WSACleanup( );
return LDAP_LOCAL_ERROR;
}
} /* The WinSock DLL is acceptable. Proceed. */
#elif HAVE_WINSOCK
{ WSADATA wsaData;
if ( WSAStartup( 0x0101, &wsaData ) != 0 ) {
return LDAP_LOCAL_ERROR;
}
}
#endif
if ( (ld = (LDAP *) LDAP_CALLOC( 1, sizeof(LDAP) )) == NULL ) {
WSACleanup( );
return( LDAP_NO_MEMORY );
}
/* copy the global options */
memcpy(&ld->ld_options, &ldap_int_global_options,
sizeof(ld->ld_options));
ld->ld_valid = LDAP_VALID_SESSION;
/* but not pointers to malloc'ed items */
ld->ld_options.ldo_defludp = NULL;
ld->ld_options.ldo_sctrls = NULL;
ld->ld_options.ldo_cctrls = NULL;
ld->ld_options.ldo_defludp =
ldap_url_duplist(ldap_int_global_options.ldo_defludp);
if ( ld->ld_options.ldo_defludp == NULL ) {
LDAP_FREE( (char*)ld );
WSACleanup( );
return LDAP_NO_MEMORY;
}
if (( ld->ld_selectinfo = ldap_new_select_info()) == NULL ) {
ldap_free_urllist( ld->ld_options.ldo_defludp );
LDAP_FREE( (char*) ld );
WSACleanup( );
return LDAP_NO_MEMORY;
}
ld->ld_lberoptions = LBER_USE_DER;
#if defined( STR_TRANSLATION ) && defined( LDAP_DEFAULT_CHARSET )
ld->ld_lberoptions |= LBER_TRANSLATE_STRINGS;
#if LDAP_CHARSET_8859 == LDAP_DEFAULT_CHARSET
ldap_set_string_translators( ld, ldap_8859_to_t61, ldap_t61_to_8859 );
#endif /* LDAP_CHARSET_8859 == LDAP_DEFAULT_CHARSET */
#endif /* STR_TRANSLATION && LDAP_DEFAULT_CHARSET */
/* we'll assume we're talking version 2 for now */
ld->ld_version = LDAP_VERSION2;
ber_pvt_sb_init( &(ld->ld_sb) );
*ldp = ld;
return LDAP_SUCCESS;
}
/*
* ldap_init - initialize the LDAP library. A magic cookie to be used for
* future communication is returned on success, NULL on failure.
* "host" may be a space-separated list of hosts or IP addresses
*
* Example:
* LDAP *ld;
* ld = ldap_open( host, port );
*/
LDAP *
ldap_init( LDAP_CONST char *defhost, int defport )
{
LDAP *ld;
int rc;
rc = ldap_create(&ld);
if ( rc != LDAP_SUCCESS )
return NULL;
if (defport != 0)
ld->ld_options.ldo_defport = defport;
if (defhost != NULL) {
rc = ldap_set_option(ld, LDAP_OPT_HOST_NAME, defhost);
if ( rc != LDAP_SUCCESS ) {
ldap_ld_free(ld, 1, NULL, NULL);
return NULL;
}
}
return( ld );
}
int
ldap_initialize( LDAP **ldp, LDAP_CONST char *url )
{
int rc;
LDAP *ld;
*ldp = NULL;
rc = ldap_create(&ld);
if ( rc != LDAP_SUCCESS )
return rc;
if (url != NULL) {
rc = ldap_set_option(ld, LDAP_OPT_URI, url);
if ( rc != LDAP_SUCCESS ) {
ldap_ld_free(ld, 1, NULL, NULL);
return rc;
}
}
*ldp = ld;
return LDAP_SUCCESS;
}
int
ldap_start_tls ( LDAP *ld,
LDAPControl **serverctrls,
LDAPControl **clientctrls )
{
#ifdef HAVE_TLS
LDAPConn *lc;
int rc;
char *rspoid = NULL;
struct berval *rspdata = NULL;
if (ld->ld_conns == NULL) {
rc = ldap_open_defconn( ld );
if (rc != LDAP_SUCCESS)
return(rc);
}
for (lc = ld->ld_conns; lc != NULL; lc = lc->lconn_next) {
if (ldap_pvt_tls_inplace(lc->lconn_sb) != 0)
return LDAP_OPERATIONS_ERROR;
rc = ldap_extended_operation_s(ld, LDAP_EXOP_START_TLS,
NULL, serverctrls, clientctrls, &rspoid, &rspdata);
if (rc != LDAP_SUCCESS)
return rc;
if (rspoid != NULL)
LDAP_FREE(rspoid);
if (rspdata != NULL)
ber_bvfree(rspdata);
rc = ldap_pvt_tls_start( lc->lconn_sb, ld->ld_options.ldo_tls_ctx );
if (rc != LDAP_SUCCESS)
return rc;
}
return LDAP_SUCCESS;
#else
return LDAP_NOT_SUPPORTED;
#endif
}
int
open_ldap_connection( LDAP *ld, Sockbuf *sb, LDAPURLDesc *srv,
char **krbinstancep, int async )
{
int rc = -1;
int port, tls;
long addr;
Debug( LDAP_DEBUG_TRACE, "open_ldap_connection\n", 0, 0, 0 );
port = srv->lud_port;
if (port == 0)
port = ld->ld_options.ldo_defport;
port = htons( (short) port );
addr = 0;
if ( srv->lud_host == NULL || *srv->lud_host == 0 )
addr = htonl( INADDR_LOOPBACK );
rc = ldap_connect_to_host( ld, sb, srv->lud_host, addr, port, async );
if ( rc == -1 ) {
return( rc );
}
ber_pvt_sb_set_io( sb, &ber_pvt_sb_io_tcp, NULL );
#ifdef HAVE_TLS
tls = srv->lud_ldaps;
if (tls == -1)
tls = ld->ld_options.ldo_tls_mode;
if ( tls != 0 ) {
rc = ldap_pvt_tls_start( sb, ld->ld_options.ldo_tls_ctx );
if (rc != LDAP_SUCCESS)
return rc;
}
#endif
if ( krbinstancep != NULL ) {
#ifdef HAVE_KERBEROS
char *c;
if (( *krbinstancep = ldap_host_connected_to( sb )) != NULL &&
( c = strchr( *krbinstancep, '.' )) != NULL ) {
*c = '\0';
}
#else /* HAVE_KERBEROS */
*krbinstancep = NULL;
#endif /* HAVE_KERBEROS */
}
return( 0 );
}