mirror of
https://git.openldap.org/openldap/openldap.git
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342 lines
7.4 KiB
C
342 lines
7.4 KiB
C
/*
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* Copyright 1998-1999 The OpenLDAP Foundation, All Rights Reserved.
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* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
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*/
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/* Portions
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* Copyright (c) 1995 Regents of the University of Michigan.
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* All rights reserved.
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*
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* os-ip.c -- platform-specific TCP & UDP related code
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*/
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#include "portable.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <ac/errno.h>
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#include <ac/socket.h>
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#include <ac/string.h>
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#include <ac/time.h>
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#include <ac/unistd.h>
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#ifdef HAVE_IO_H
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#include <io.h>
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#endif /* HAVE_IO_H */
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#if defined( HAVE_SYS_FILIO_H )
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#include <sys/filio.h>
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#elif defined( HAVE_SYS_IOCTL_H )
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#include <sys/ioctl.h>
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#endif
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#include "ldap-int.h"
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int
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ldap_connect_to_host( Sockbuf *sb, char *host, unsigned long address,
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int port, int async )
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/*
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* if host == NULL, connect using address
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* "address" and "port" must be in network byte order
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* zero is returned upon success, -1 if fatal error, -2 EINPROGRESS
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* async is only used ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_REFERRALS (non-0 means don't wait for connect)
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* XXX async is not used yet!
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*/
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{
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int rc, i, s = 0;
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int connected, use_hp;
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struct sockaddr_in sin;
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struct hostent *hp = NULL;
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#ifdef notyet
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#ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_REFERRALS
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int status; /* for ioctl call */
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#endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_REFERRALS */
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#endif /* notyet */
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/* buffers for ldap_pvt_gethostbyname_a */
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struct hostent he_buf;
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int local_h_errno;
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char *ha_buf=NULL;
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#define DO_RETURN(x) if (ha_buf) free(ha_buf); return (x);
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Debug( LDAP_DEBUG_TRACE, "ldap_connect_to_host: %s:%d\n",
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( host == NULL ) ? "(by address)" : host, (int) ntohs( (short) port ), 0 );
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connected = use_hp = 0;
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if ( host != NULL ) {
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address = inet_addr( host );
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/* This was just a test for -1 until OSF1 let inet_addr return
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unsigned int, which is narrower than 'unsigned long address' */
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if ( address == 0xffffffff || address == (unsigned long) -1 ) {
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if ( ( ldap_pvt_gethostbyname_a( host, &he_buf, &ha_buf,
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&hp, &local_h_errno) < 0) || (hp==NULL))
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{
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#ifdef HAVE_WINSOCK
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errno = WSAGetLastError();
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#else
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errno = EHOSTUNREACH; /* not exactly right, but... */
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#endif
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DO_RETURN( -1 );
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}
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use_hp = 1;
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}
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}
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rc = -1;
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for ( i = 0; !use_hp || ( hp->h_addr_list[ i ] != 0 ); i++ ) {
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if (( s = socket( AF_INET, SOCK_STREAM, 0 )) < 0 ) {
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DO_RETURN( -1 );
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}
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#ifdef notyet
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#ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_REFERRALS
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status = 1;
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if ( async && ioctl( s, FIONBIO, (caddr_t)&status ) == -1 ) {
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Debug( LDAP_DEBUG_ANY, "FIONBIO ioctl failed on %d\n",
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s, 0, 0 );
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}
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#endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_REFERRALS */
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#endif /* notyet */
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(void)memset( (char *)&sin, 0, sizeof( struct sockaddr_in ));
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sin.sin_family = AF_INET;
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sin.sin_port = port;
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SAFEMEMCPY( (char *) &sin.sin_addr.s_addr,
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( use_hp ? (char *) hp->h_addr_list[ i ] :
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(char *) &address ), sizeof( sin.sin_addr.s_addr) );
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if ( connect( s, (struct sockaddr *)&sin,
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sizeof( struct sockaddr_in )) >= 0 ) {
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connected = 1;
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rc = 0;
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break;
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} else {
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#ifdef HAVE_WINSOCK
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errno = WSAGetLastError();
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#endif
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#ifdef notyet
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#ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_REFERRALS
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#ifdef EAGAIN
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if ( errno == EINPROGRESS || errno == EAGAIN ) {
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#else /* EAGAIN */
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if ( errno == EINPROGRESS ) {
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#endif /* EAGAIN */
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Debug( LDAP_DEBUG_TRACE,
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"connect would block...\n", 0, 0, 0 );
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rc = -2;
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break;
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}
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#endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_REFERRALS */
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#endif /* notyet */
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#ifdef LDAP_DEBUG
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if ( ldap_debug & LDAP_DEBUG_TRACE ) {
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perror( (char *)inet_ntoa( sin.sin_addr ));
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}
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#endif
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tcp_close( s );
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if ( !use_hp ) {
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break;
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}
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}
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}
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sb->sb_sd = s;
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if ( connected ) {
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#ifdef notyet
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#ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_REFERRALS
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status = 0;
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if ( !async && ioctl( s, FIONBIO, (caddr_t)&on ) == -1 ) {
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Debug( LDAP_DEBUG_ANY, "FIONBIO ioctl failed on %d\n",
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s, 0, 0 );
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}
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#endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_REFERRALS */
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#endif /* notyet */
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Debug( LDAP_DEBUG_TRACE, "sd %d connected to: %s\n",
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s, (char *) inet_ntoa( sin.sin_addr ), 0 );
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}
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DO_RETURN( rc );
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}
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#undef DO_RETURN
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void
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ldap_close_connection( Sockbuf *sb )
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{
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tcp_close( sb->sb_sd );
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}
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#ifdef HAVE_KERBEROS
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char *
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ldap_host_connected_to( Sockbuf *sb )
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{
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struct hostent *hp;
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char *p;
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int len;
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struct sockaddr_in sin;
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/* buffers for gethostbyaddr_r */
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struct hostent he_buf;
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int local_h_errno;
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char *ha_buf=NULL;
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#define DO_RETURN(x) if (ha_buf) free(ha_buf); return (x);
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(void)memset( (char *)&sin, 0, sizeof( struct sockaddr_in ));
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len = sizeof( sin );
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if ( getpeername( sb->sb_sd, (struct sockaddr *)&sin, &len ) == -1 ) {
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return( NULL );
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}
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/*
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* do a reverse lookup on the addr to get the official hostname.
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* this is necessary for kerberos to work right, since the official
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* hostname is used as the kerberos instance.
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*/
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if ((ldap_pvt_gethostbyaddr_a( (char *) &sin.sin_addr,
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sizeof( sin.sin_addr ),
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AF_INET, &he_buf, &ha_buf,
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&hp,&local_h_errno ) ==0 ) && (hp != NULL) )
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{
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if ( hp->h_name != NULL ) {
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DO_RETURN( strdup( hp->h_name ));
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}
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}
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DO_RETURN( NULL );
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}
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#undef DO_RETURN
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#endif /* HAVE_KERBEROS */
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#ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_REFERRALS
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/* for UNIX */
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struct selectinfo {
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fd_set si_readfds;
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fd_set si_writefds;
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fd_set si_use_readfds;
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fd_set si_use_writefds;
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};
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void
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ldap_mark_select_write( LDAP *ld, Sockbuf *sb )
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{
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struct selectinfo *sip;
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sip = (struct selectinfo *)ld->ld_selectinfo;
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if ( !FD_ISSET( sb->sb_sd, &sip->si_writefds )) {
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FD_SET( (u_int) sb->sb_sd, &sip->si_writefds );
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}
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}
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void
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ldap_mark_select_read( LDAP *ld, Sockbuf *sb )
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{
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struct selectinfo *sip;
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sip = (struct selectinfo *)ld->ld_selectinfo;
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if ( !FD_ISSET( sb->sb_sd, &sip->si_readfds )) {
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FD_SET( (u_int) sb->sb_sd, &sip->si_readfds );
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}
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}
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void
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ldap_mark_select_clear( LDAP *ld, Sockbuf *sb )
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{
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struct selectinfo *sip;
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sip = (struct selectinfo *)ld->ld_selectinfo;
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FD_CLR( (u_int) sb->sb_sd, &sip->si_writefds );
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FD_CLR( (u_int) sb->sb_sd, &sip->si_readfds );
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}
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int
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ldap_is_write_ready( LDAP *ld, Sockbuf *sb )
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{
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struct selectinfo *sip;
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sip = (struct selectinfo *)ld->ld_selectinfo;
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return( FD_ISSET( sb->sb_sd, &sip->si_use_writefds ));
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}
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int
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ldap_is_read_ready( LDAP *ld, Sockbuf *sb )
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{
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struct selectinfo *sip;
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sip = (struct selectinfo *)ld->ld_selectinfo;
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return( FD_ISSET( sb->sb_sd, &sip->si_use_readfds ));
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}
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void *
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ldap_new_select_info( void )
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{
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struct selectinfo *sip;
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if (( sip = (struct selectinfo *)calloc( 1,
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sizeof( struct selectinfo ))) != NULL ) {
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FD_ZERO( &sip->si_readfds );
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FD_ZERO( &sip->si_writefds );
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}
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return( (void *)sip );
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}
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void
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ldap_free_select_info( void *sip )
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{
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free( sip );
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}
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int
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do_ldap_select( LDAP *ld, struct timeval *timeout )
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{
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struct selectinfo *sip;
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static int tblsize;
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Debug( LDAP_DEBUG_TRACE, "do_ldap_select\n", 0, 0, 0 );
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if ( tblsize == 0 ) {
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#if defined( HAVE_SYSCONF )
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tblsize = sysconf( _SC_OPEN_MAX );
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#elif defined( HAVE_GETDTABLESIZE )
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tblsize = getdtablesize();
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#else
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tblsize = FD_SETSIZE;
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#endif /* !USE_SYSCONF */
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#ifdef FD_SETSIZE
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if( tblsize > FD_SETSIZE ) {
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tblsize = FD_SETSIZE;
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}
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#endif /* FD_SETSIZE*/
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}
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sip = (struct selectinfo *)ld->ld_selectinfo;
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sip->si_use_readfds = sip->si_readfds;
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sip->si_use_writefds = sip->si_writefds;
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return( select( tblsize, &sip->si_use_readfds, &sip->si_use_writefds,
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NULL, timeout ));
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}
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#endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_REFERRALS */
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