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openldap/libraries/libldap/os-ip.c
Kurt Zeilenga fa2da63ca4 Merge from LAMBERT branch
1998-08-17 23:26:25 +00:00

341 lines
7.0 KiB
C
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/*
* Copyright (c) 1995 Regents of the University of Michigan.
* All rights reserved.
*
* os-ip.c -- platform-specific TCP & UDP related code
*/
#ifndef lint
static char copyright[] = "@(#) Copyright (c) 1995 Regents of the University of Michigan.\nAll rights reserved.\n";
#endif
#include <stdio.h>
#include <string.h>
#include <errno.h>
#ifdef _WIN32
#include <io.h>
#include "msdos.h"
#else /* _WIN32 */
#include <sys/time.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#endif /* _WIN32 */
#ifdef _AIX
#include <sys/select.h>
#endif /* _AIX */
#ifdef VMS
#include "ucx_select.h"
#endif /* VMS */
#include "portable.h"
#include "lber.h"
#include "ldap.h"
#ifdef LDAP_REFERRALS
#ifdef USE_SYSCONF
#include <unistd.h>
#endif /* USE_SYSCONF */
#ifdef notyet
#ifdef NEED_FILIO
#include <sys/filio.h>
#else /* NEED_FILIO */
#include <sys/ioctl.h>
#endif /* NEED_FILIO */
#endif /* notyet */
#endif /* LDAP_REFERRALS */
#ifdef MACOS
#define tcp_close( s ) tcpclose( s )
#else /* MACOS */
#ifdef DOS
#ifdef PCNFS
#define tcp_close( s ) close( s )
#endif /* PCNFS */
#ifdef NCSA
#define tcp_close( s ) netclose( s ); netshut()
#endif /* NCSA */
#ifdef WINSOCK
#define tcp_close( s ) closesocket( s ); WSACleanup();
#endif /* WINSOCK */
#else /* DOS */
#define tcp_close( s ) close( s )
#endif /* DOS */
#endif /* MACOS */
#include "ldap-int.h"
int
ldap_connect_to_host( Sockbuf *sb, char *host, unsigned long address,
int port, int async )
/*
* if host == NULL, connect using address
* "address" and "port" must be in network byte order
* zero is returned upon success, -1 if fatal error, -2 EINPROGRESS
* async is only used ifdef LDAP_REFERRALS (non-0 means don't wait for connect)
* XXX async is not used yet!
*/
{
int rc, i, s, connected, use_hp;
struct sockaddr_in sin;
struct hostent *hp;
#ifdef notyet
#ifdef LDAP_REFERRALS
int status; /* for ioctl call */
#endif /* LDAP_REFERRALS */
#endif /* notyet */
Debug( LDAP_DEBUG_TRACE, "ldap_connect_to_host: %s:%d\n",
( host == NULL ) ? "(by address)" : host, ntohs( port ), 0 );
connected = use_hp = 0;
if ( host != NULL && ( address = inet_addr( host )) == -1 ) {
if ( (hp = gethostbyname( host )) == NULL ) {
errno = EHOSTUNREACH; /* not exactly right, but... */
return( -1 );
}
use_hp = 1;
}
rc = -1;
for ( i = 0; !use_hp || ( hp->h_addr_list[ i ] != 0 ); i++ ) {
if (( s = socket( AF_INET, SOCK_STREAM, 0 )) < 0 ) {
return( -1 );
}
#ifdef notyet
#ifdef LDAP_REFERRALS
status = 1;
if ( async && ioctl( s, FIONBIO, (caddr_t)&status ) == -1 ) {
Debug( LDAP_DEBUG_ANY, "FIONBIO ioctl failed on %d\n",
s, 0, 0 );
}
#endif /* LDAP_REFERRALS */
#endif /* notyet */
(void)memset( (char *)&sin, 0, sizeof( struct sockaddr_in ));
sin.sin_family = AF_INET;
sin.sin_port = port;
SAFEMEMCPY( (char *) &sin.sin_addr.s_addr,
( use_hp ? (char *) hp->h_addr_list[ i ] :
(char *) &address ), sizeof( sin.sin_addr.s_addr) );
if ( connect( s, (struct sockaddr *)&sin,
sizeof( struct sockaddr_in )) >= 0 ) {
connected = 1;
rc = 0;
break;
} else {
#ifdef notyet
#ifdef LDAP_REFERRALS
#ifdef EAGAIN
if ( errno == EINPROGRESS || errno == EAGAIN ) {
#else /* EAGAIN */
if ( errno == EINPROGRESS ) {
#endif /* EAGAIN */
Debug( LDAP_DEBUG_TRACE,
"connect would block...\n", 0, 0, 0 );
rc = -2;
break;
}
#endif /* LDAP_REFERRALS */
#endif /* notyet */
#ifdef LDAP_DEBUG
if ( ldap_debug & LDAP_DEBUG_TRACE ) {
perror( (char *)inet_ntoa( sin.sin_addr ));
}
#endif
close( s );
if ( !use_hp ) {
break;
}
}
}
sb->sb_sd = s;
if ( connected ) {
#ifdef notyet
#ifdef LDAP_REFERRALS
status = 0;
if ( !async && ioctl( s, FIONBIO, (caddr_t)&on ) == -1 ) {
Debug( LDAP_DEBUG_ANY, "FIONBIO ioctl failed on %d\n",
s, 0, 0 );
}
#endif /* LDAP_REFERRALS */
#endif /* notyet */
Debug( LDAP_DEBUG_TRACE, "sd %d connected to: %s\n",
s, inet_ntoa( sin.sin_addr ), 0 );
}
return( rc );
}
void
ldap_close_connection( Sockbuf *sb )
{
tcp_close( sb->sb_sd );
}
#ifdef KERBEROS
char *
ldap_host_connected_to( Sockbuf *sb )
{
struct hostent *hp;
char *p;
int len;
struct sockaddr_in sin;
(void)memset( (char *)&sin, 0, sizeof( struct sockaddr_in ));
len = sizeof( sin );
if ( getpeername( sb->sb_sd, (struct sockaddr *)&sin, &len ) == -1 ) {
return( NULL );
}
/*
* do a reverse lookup on the addr to get the official hostname.
* this is necessary for kerberos to work right, since the official
* hostname is used as the kerberos instance.
*/
if (( hp = gethostbyaddr( (char *) &sin.sin_addr,
sizeof( sin.sin_addr ), AF_INET )) != NULL ) {
if ( hp->h_name != NULL ) {
return( strdup( hp->h_name ));
}
}
return( NULL );
}
#endif /* KERBEROS */
#ifdef LDAP_REFERRALS
/* for UNIX */
struct selectinfo {
fd_set si_readfds;
fd_set si_writefds;
fd_set si_use_readfds;
fd_set si_use_writefds;
};
void
ldap_mark_select_write( LDAP *ld, Sockbuf *sb )
{
struct selectinfo *sip;
sip = (struct selectinfo *)ld->ld_selectinfo;
if ( !FD_ISSET( sb->sb_sd, &sip->si_writefds )) {
FD_SET( sb->sb_sd, &sip->si_writefds );
}
}
void
ldap_mark_select_read( LDAP *ld, Sockbuf *sb )
{
struct selectinfo *sip;
sip = (struct selectinfo *)ld->ld_selectinfo;
if ( !FD_ISSET( sb->sb_sd, &sip->si_readfds )) {
FD_SET( sb->sb_sd, &sip->si_readfds );
}
}
void
ldap_mark_select_clear( LDAP *ld, Sockbuf *sb )
{
struct selectinfo *sip;
sip = (struct selectinfo *)ld->ld_selectinfo;
FD_CLR( sb->sb_sd, &sip->si_writefds );
FD_CLR( sb->sb_sd, &sip->si_readfds );
}
int
ldap_is_write_ready( LDAP *ld, Sockbuf *sb )
{
struct selectinfo *sip;
sip = (struct selectinfo *)ld->ld_selectinfo;
return( FD_ISSET( sb->sb_sd, &sip->si_use_writefds ));
}
int
ldap_is_read_ready( LDAP *ld, Sockbuf *sb )
{
struct selectinfo *sip;
sip = (struct selectinfo *)ld->ld_selectinfo;
return( FD_ISSET( sb->sb_sd, &sip->si_use_readfds ));
}
void *
ldap_new_select_info()
{
struct selectinfo *sip;
if (( sip = (struct selectinfo *)calloc( 1,
sizeof( struct selectinfo ))) != NULL ) {
FD_ZERO( &sip->si_readfds );
FD_ZERO( &sip->si_writefds );
}
return( (void *)sip );
}
void
ldap_free_select_info( void *sip )
{
free( sip );
}
int
do_ldap_select( LDAP *ld, struct timeval *timeout )
{
struct selectinfo *sip;
static int tblsize;
Debug( LDAP_DEBUG_TRACE, "do_ldap_select\n", 0, 0, 0 );
if ( tblsize == 0 ) {
#ifdef FD_SETSIZE
/*
* It is invalid to use a set size in excess of the type
* scope, as defined for the fd_set in sys/types.h. This
* is true for any OS.
*/
tblsize = FD_SETSIZE;
#else /* !FD_SETSIZE*/
#ifdef USE_SYSCONF
tblsize = sysconf( _SC_OPEN_MAX );
#else /* USE_SYSCONF */
tblsize = getdtablesize();
#endif /* USE_SYSCONF */
#endif /* !FD_SETSIZE*/
}
sip = (struct selectinfo *)ld->ld_selectinfo;
sip->si_use_readfds = sip->si_readfds;
sip->si_use_writefds = sip->si_writefds;
return( select( tblsize, &sip->si_use_readfds, &sip->si_use_writefds,
NULL, timeout ));
}
#endif /* LDAP_REFERRALS */
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