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https://git.openldap.org/openldap/openldap.git
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982 lines
20 KiB
C
982 lines
20 KiB
C
/* sockbuf.c - i/o routines with support for adding i/o layers. */
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/* $OpenLDAP$ */
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/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
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*
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* Copyright 1998-2007 The OpenLDAP Foundation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted only as authorized by the OpenLDAP
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* Public License.
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*
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* A copy of this license is available in the file LICENSE in the
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* top-level directory of the distribution or, alternatively, at
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* <http://www.OpenLDAP.org/license.html>.
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*/
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#include "portable.h"
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#include <stdio.h>
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#include <ac/stdlib.h>
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#include <ac/ctype.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/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_FCNTL_H )
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#include <fcntl.h>
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#endif
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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 "lber-int.h"
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#ifndef LBER_MIN_BUFF_SIZE
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#define LBER_MIN_BUFF_SIZE 4096
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#endif
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#ifndef LBER_MAX_BUFF_SIZE
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#define LBER_MAX_BUFF_SIZE (65536*256)
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#endif
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#ifndef LBER_DEFAULT_READAHEAD
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#define LBER_DEFAULT_READAHEAD 16384
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#endif
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Sockbuf *
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ber_sockbuf_alloc( void )
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{
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Sockbuf *sb;
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sb = LBER_CALLOC( 1, sizeof( Sockbuf ) );
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if( sb == NULL ) return NULL;
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ber_int_sb_init( sb );
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return sb;
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}
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void
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ber_sockbuf_free( Sockbuf *sb )
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{
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assert( sb != NULL );
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assert( SOCKBUF_VALID( sb ) );
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ber_int_sb_close( sb );
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ber_int_sb_destroy( sb );
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LBER_FREE( sb );
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}
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/* Return values: -1: error, 0: no operation performed or the answer is false,
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* 1: successful operation or the answer is true
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*/
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int
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ber_sockbuf_ctrl( Sockbuf *sb, int opt, void *arg )
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{
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Sockbuf_IO_Desc *p;
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int ret = 0;
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assert( sb != NULL );
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assert( SOCKBUF_VALID( sb ) );
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switch ( opt ) {
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case LBER_SB_OPT_HAS_IO:
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p = sb->sb_iod;
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while ( p && p->sbiod_io != (Sockbuf_IO *)arg ) {
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p = p->sbiod_next;
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}
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if ( p ) {
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ret = 1;
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}
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break;
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case LBER_SB_OPT_GET_FD:
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if ( arg != NULL ) {
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*((ber_socket_t *)arg) = sb->sb_fd;
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}
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ret = ( sb->sb_fd == AC_SOCKET_INVALID ? -1 : 1);
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break;
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case LBER_SB_OPT_SET_FD:
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sb->sb_fd = *((ber_socket_t *)arg);
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ret = 1;
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break;
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case LBER_SB_OPT_SET_NONBLOCK:
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ret = ber_pvt_socket_set_nonblock( sb->sb_fd, arg != NULL)
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? -1 : 1;
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break;
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case LBER_SB_OPT_DRAIN: {
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/* Drain the data source to enable possible errors (e.g.
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* TLS) to be propagated to the upper layers
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*/
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char buf[LBER_MIN_BUFF_SIZE];
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do {
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ret = ber_int_sb_read( sb, buf, sizeof( buf ) );
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} while ( ret == sizeof( buf ) );
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ret = 1;
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} break;
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case LBER_SB_OPT_NEEDS_READ:
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ret = ( sb->sb_trans_needs_read ? 1 : 0 );
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break;
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case LBER_SB_OPT_NEEDS_WRITE:
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ret = ( sb->sb_trans_needs_write ? 1 : 0 );
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break;
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case LBER_SB_OPT_GET_MAX_INCOMING:
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if ( arg != NULL ) {
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*((ber_len_t *)arg) = sb->sb_max_incoming;
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}
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ret = 1;
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break;
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case LBER_SB_OPT_SET_MAX_INCOMING:
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sb->sb_max_incoming = *((ber_len_t *)arg);
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ret = 1;
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break;
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case LBER_SB_OPT_UNGET_BUF:
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#ifdef LDAP_PF_LOCAL_SENDMSG
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sb->sb_ungetlen = ((struct berval *)arg)->bv_len;
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if ( sb->sb_ungetlen <= sizeof( sb->sb_ungetbuf )) {
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AC_MEMCPY( sb->sb_ungetbuf, ((struct berval *)arg)->bv_val,
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sb->sb_ungetlen );
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ret = 1;
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} else {
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sb->sb_ungetlen = 0;
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ret = -1;
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}
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#endif
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break;
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default:
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ret = sb->sb_iod->sbiod_io->sbi_ctrl( sb->sb_iod, opt, arg );
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break;
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}
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return ret;
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}
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int
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ber_sockbuf_add_io( Sockbuf *sb, Sockbuf_IO *sbio, int layer, void *arg )
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{
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Sockbuf_IO_Desc *d, *p, **q;
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assert( sb != NULL );
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assert( SOCKBUF_VALID( sb ) );
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if ( sbio == NULL ) {
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return -1;
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}
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q = &sb->sb_iod;
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p = *q;
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while ( p && p->sbiod_level > layer ) {
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q = &p->sbiod_next;
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p = *q;
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}
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d = LBER_MALLOC( sizeof( *d ) );
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if ( d == NULL ) {
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return -1;
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}
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d->sbiod_level = layer;
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d->sbiod_sb = sb;
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d->sbiod_io = sbio;
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memset( &d->sbiod_pvt, '\0', sizeof( d->sbiod_pvt ) );
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d->sbiod_next = p;
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*q = d;
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if ( sbio->sbi_setup != NULL && ( sbio->sbi_setup( d, arg ) < 0 ) ) {
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return -1;
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}
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return 0;
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}
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int
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ber_sockbuf_remove_io( Sockbuf *sb, Sockbuf_IO *sbio, int layer )
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{
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Sockbuf_IO_Desc *p, **q;
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assert( sb != NULL );
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assert( SOCKBUF_VALID( sb ) );
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if ( sb->sb_iod == NULL ) {
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return -1;
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}
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q = &sb->sb_iod;
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while ( *q != NULL ) {
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p = *q;
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if ( layer == p->sbiod_level && p->sbiod_io == sbio ) {
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if ( p->sbiod_io->sbi_remove != NULL &&
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p->sbiod_io->sbi_remove( p ) < 0 )
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{
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return -1;
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}
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*q = p->sbiod_next;
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LBER_FREE( p );
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break;
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}
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q = &p->sbiod_next;
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}
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return 0;
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}
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void
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ber_pvt_sb_buf_init( Sockbuf_Buf *buf )
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{
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buf->buf_base = NULL;
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buf->buf_ptr = 0;
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buf->buf_end = 0;
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buf->buf_size = 0;
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}
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void
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ber_pvt_sb_buf_destroy( Sockbuf_Buf *buf )
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{
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assert( buf != NULL);
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if (buf->buf_base) {
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LBER_FREE( buf->buf_base );
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}
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ber_pvt_sb_buf_init( buf );
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}
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int
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ber_pvt_sb_grow_buffer( Sockbuf_Buf *buf, ber_len_t minsize )
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{
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ber_len_t pw;
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char *p;
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assert( buf != NULL );
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for ( pw = LBER_MIN_BUFF_SIZE; pw < minsize; pw <<= 1 ) {
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if (pw > LBER_MAX_BUFF_SIZE) return -1;
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}
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if ( buf->buf_size < pw ) {
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p = LBER_REALLOC( buf->buf_base, pw );
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if ( p == NULL ) return -1;
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buf->buf_base = p;
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buf->buf_size = pw;
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}
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return 0;
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}
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ber_len_t
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ber_pvt_sb_copy_out( Sockbuf_Buf *sbb, char *buf, ber_len_t len )
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{
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ber_len_t max;
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assert( buf != NULL );
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assert( sbb != NULL );
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#if 0
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assert( sbb->buf_size > 0 );
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#endif
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max = sbb->buf_end - sbb->buf_ptr;
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max = ( max < len) ? max : len;
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if ( max ) {
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AC_MEMCPY( buf, sbb->buf_base + sbb->buf_ptr, max );
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sbb->buf_ptr += max;
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if ( sbb->buf_ptr >= sbb->buf_end ) {
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sbb->buf_ptr = sbb->buf_end = 0;
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}
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}
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return max;
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}
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ber_slen_t
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ber_pvt_sb_do_write( Sockbuf_IO_Desc *sbiod, Sockbuf_Buf *buf_out )
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{
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ber_len_t to_go;
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ber_slen_t ret;
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assert( sbiod != NULL );
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assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
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to_go = buf_out->buf_end - buf_out->buf_ptr;
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assert( to_go > 0 );
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for(;;) {
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ret = LBER_SBIOD_WRITE_NEXT( sbiod, buf_out->buf_base +
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buf_out->buf_ptr, to_go );
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#ifdef EINTR
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if ((ret<0) && (errno==EINTR)) continue;
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#endif
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break;
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}
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if ( ret <= 0 ) return ret;
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buf_out->buf_ptr += ret;
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if (buf_out->buf_ptr == buf_out->buf_end) {
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buf_out->buf_end = buf_out->buf_ptr = 0;
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}
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return ret;
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}
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int
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ber_pvt_socket_set_nonblock( ber_socket_t sd, int nb )
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{
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#ifdef HAVE_FCNTL
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int flags = fcntl( sd, F_GETFL);
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if( nb ) {
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flags |= O_NONBLOCK;
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} else {
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flags &= ~O_NONBLOCK;
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}
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return fcntl( sd, F_SETFL, flags );
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#elif defined( FIONBIO )
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ioctl_t status = nb ? 1 : 0;
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return ioctl( sd, FIONBIO, &status );
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#endif
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}
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int
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ber_int_sb_init( Sockbuf *sb )
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{
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assert( sb != NULL);
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sb->sb_valid=LBER_VALID_SOCKBUF;
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sb->sb_options = 0;
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sb->sb_debug = ber_int_debug;
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sb->sb_fd = AC_SOCKET_INVALID;
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sb->sb_iod = NULL;
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sb->sb_trans_needs_read = 0;
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sb->sb_trans_needs_write = 0;
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assert( SOCKBUF_VALID( sb ) );
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return 0;
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}
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int
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ber_int_sb_close( Sockbuf *sb )
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{
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Sockbuf_IO_Desc *p;
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assert( sb != NULL);
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p = sb->sb_iod;
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while ( p ) {
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if ( p->sbiod_io->sbi_close && p->sbiod_io->sbi_close( p ) < 0 ) {
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return -1;
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}
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p = p->sbiod_next;
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}
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sb->sb_fd = AC_SOCKET_INVALID;
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return 0;
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}
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int
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ber_int_sb_destroy( Sockbuf *sb )
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{
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Sockbuf_IO_Desc *p;
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assert( sb != NULL);
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assert( SOCKBUF_VALID( sb ) );
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while ( sb->sb_iod ) {
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p = sb->sb_iod->sbiod_next;
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ber_sockbuf_remove_io( sb, sb->sb_iod->sbiod_io,
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sb->sb_iod->sbiod_level );
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sb->sb_iod = p;
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}
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return ber_int_sb_init( sb );
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}
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ber_slen_t
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ber_int_sb_read( Sockbuf *sb, void *buf, ber_len_t len )
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{
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ber_slen_t ret;
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assert( buf != NULL );
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assert( sb != NULL);
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assert( sb->sb_iod != NULL );
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assert( SOCKBUF_VALID( sb ) );
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for (;;) {
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ret = sb->sb_iod->sbiod_io->sbi_read( sb->sb_iod, buf, len );
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#ifdef EINTR
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if ( ( ret < 0 ) && ( errno == EINTR ) ) continue;
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#endif
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break;
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}
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return ret;
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}
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ber_slen_t
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ber_int_sb_write( Sockbuf *sb, void *buf, ber_len_t len )
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{
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ber_slen_t ret;
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assert( buf != NULL );
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assert( sb != NULL);
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assert( sb->sb_iod != NULL );
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assert( SOCKBUF_VALID( sb ) );
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for (;;) {
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ret = sb->sb_iod->sbiod_io->sbi_write( sb->sb_iod, buf, len );
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#ifdef EINTR
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if ( ( ret < 0 ) && ( errno == EINTR ) ) continue;
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#endif
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break;
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}
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return ret;
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}
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/*
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* Support for TCP
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*/
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static ber_slen_t
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sb_stream_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len )
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{
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assert( sbiod != NULL);
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assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
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#if defined(MACOS)
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/*
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* MacTCP/OpenTransport
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*/
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return tcpread( sbiod->sbiod_sb->sb_fd, 0, (unsigned char *)buf,
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len, NULL );
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#elif defined( HAVE_PCNFS ) || \
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defined( HAVE_WINSOCK ) || defined ( __BEOS__ )
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/*
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* PCNFS (under DOS)
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*/
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/*
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* Windows Socket API (under DOS/Windows 3.x)
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*/
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/*
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* 32-bit Windows Socket API (under Windows NT or Windows 95)
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*/
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return recv( sbiod->sbiod_sb->sb_fd, buf, len, 0 );
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#elif defined( HAVE_NCSA )
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/*
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* NCSA Telnet TCP/IP stack (under DOS)
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*/
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return nread( sbiod->sbiod_sb->sb_fd, buf, len );
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#else
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return read( sbiod->sbiod_sb->sb_fd, buf, len );
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#endif
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}
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static ber_slen_t
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sb_stream_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len )
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{
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assert( sbiod != NULL);
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assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
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#if defined(MACOS)
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/*
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* MacTCP/OpenTransport
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*/
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#define MAX_WRITE 65535
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return tcpwrite( sbiod->sbiod_sb->sb_fd, (unsigned char *)buf,
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(len<MAX_WRITE) ? len : MAX_WRITE );
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#elif defined( HAVE_PCNFS) \
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|| defined( HAVE_WINSOCK) || defined ( __BEOS__ )
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/*
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* PCNFS (under DOS)
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*/
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/*
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* Windows Socket API (under DOS/Windows 3.x)
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*/
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/*
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* 32-bit Windows Socket API (under Windows NT or Windows 95)
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*/
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return send( sbiod->sbiod_sb->sb_fd, buf, len, 0 );
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#elif defined(HAVE_NCSA)
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return netwrite( sbiod->sbiod_sb->sb_fd, buf, len );
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#elif defined(VMS)
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/*
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* VMS -- each write must be 64K or smaller
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*/
|
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#define MAX_WRITE 65535
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return write( sbiod->sbiod_sb->sb_fd, buf,
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(len<MAX_WRITE) ? len : MAX_WRITE);
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#else
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return write( sbiod->sbiod_sb->sb_fd, buf, len );
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#endif
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}
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static int
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sb_stream_close( Sockbuf_IO_Desc *sbiod )
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{
|
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assert( sbiod != NULL );
|
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assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
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tcp_close( sbiod->sbiod_sb->sb_fd );
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return 0;
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}
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|
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/* The argument is a pointer to the socket descriptor */
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static int
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sb_stream_setup( Sockbuf_IO_Desc *sbiod, void *arg ) {
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assert( sbiod != NULL );
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if ( arg != NULL ) {
|
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sbiod->sbiod_sb->sb_fd = *((int *)arg);
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}
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return 0;
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}
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|
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static int
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sb_stream_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg ) {
|
|
/* This is an end IO descriptor */
|
|
return 0;
|
|
}
|
|
|
|
Sockbuf_IO ber_sockbuf_io_tcp = {
|
|
sb_stream_setup, /* sbi_setup */
|
|
NULL, /* sbi_remove */
|
|
sb_stream_ctrl, /* sbi_ctrl */
|
|
sb_stream_read, /* sbi_read */
|
|
sb_stream_write, /* sbi_write */
|
|
sb_stream_close /* sbi_close */
|
|
};
|
|
|
|
|
|
/*
|
|
* Support for readahead (UDP needs it)
|
|
*/
|
|
|
|
static int
|
|
sb_rdahead_setup( Sockbuf_IO_Desc *sbiod, void *arg )
|
|
{
|
|
Sockbuf_Buf *p;
|
|
|
|
assert( sbiod != NULL );
|
|
|
|
p = LBER_MALLOC( sizeof( *p ) );
|
|
if ( p == NULL ) return -1;
|
|
|
|
ber_pvt_sb_buf_init( p );
|
|
|
|
if ( arg == NULL ) {
|
|
ber_pvt_sb_grow_buffer( p, LBER_DEFAULT_READAHEAD );
|
|
} else {
|
|
ber_pvt_sb_grow_buffer( p, *((int *)arg) );
|
|
}
|
|
|
|
sbiod->sbiod_pvt = p;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
sb_rdahead_remove( Sockbuf_IO_Desc *sbiod )
|
|
{
|
|
Sockbuf_Buf *p;
|
|
|
|
assert( sbiod != NULL );
|
|
|
|
p = (Sockbuf_Buf *)sbiod->sbiod_pvt;
|
|
|
|
if ( p->buf_ptr != p->buf_end ) return -1;
|
|
|
|
ber_pvt_sb_buf_destroy( (Sockbuf_Buf *)(sbiod->sbiod_pvt) );
|
|
LBER_FREE( sbiod->sbiod_pvt );
|
|
sbiod->sbiod_pvt = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static ber_slen_t
|
|
sb_rdahead_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len )
|
|
{
|
|
Sockbuf_Buf *p;
|
|
ber_slen_t bufptr = 0, ret, max;
|
|
|
|
assert( sbiod != NULL );
|
|
assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
|
|
assert( sbiod->sbiod_next != NULL );
|
|
|
|
p = (Sockbuf_Buf *)sbiod->sbiod_pvt;
|
|
|
|
assert( p->buf_size > 0 );
|
|
|
|
/* Are there anything left in the buffer? */
|
|
ret = ber_pvt_sb_copy_out( p, buf, len );
|
|
bufptr += ret;
|
|
len -= ret;
|
|
|
|
if ( len == 0 ) return bufptr;
|
|
|
|
max = p->buf_size - p->buf_end;
|
|
ret = 0;
|
|
while ( max > 0 ) {
|
|
ret = LBER_SBIOD_READ_NEXT( sbiod, p->buf_base + p->buf_end,
|
|
max );
|
|
#ifdef EINTR
|
|
if ( ( ret < 0 ) && ( errno == EINTR ) ) continue;
|
|
#endif
|
|
break;
|
|
}
|
|
|
|
if ( ret < 0 ) {
|
|
return ( bufptr ? bufptr : ret );
|
|
}
|
|
|
|
p->buf_end += ret;
|
|
bufptr += ber_pvt_sb_copy_out( p, (char *) buf + bufptr, len );
|
|
return bufptr;
|
|
}
|
|
|
|
static ber_slen_t
|
|
sb_rdahead_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len )
|
|
{
|
|
assert( sbiod != NULL );
|
|
assert( sbiod->sbiod_next != NULL );
|
|
|
|
return LBER_SBIOD_WRITE_NEXT( sbiod, buf, len );
|
|
}
|
|
|
|
static int
|
|
sb_rdahead_close( Sockbuf_IO_Desc *sbiod )
|
|
{
|
|
assert( sbiod != NULL );
|
|
|
|
/* Just erase the buffer */
|
|
ber_pvt_sb_buf_destroy((Sockbuf_Buf *)sbiod->sbiod_pvt);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
sb_rdahead_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
|
|
{
|
|
Sockbuf_Buf *p;
|
|
|
|
p = (Sockbuf_Buf *)sbiod->sbiod_pvt;
|
|
|
|
if ( opt == LBER_SB_OPT_DATA_READY ) {
|
|
if ( p->buf_ptr != p->buf_end ) {
|
|
return 1;
|
|
}
|
|
|
|
} else if ( opt == LBER_SB_OPT_SET_READAHEAD ) {
|
|
if ( p->buf_size >= *((ber_len_t *)arg) ) {
|
|
return 0;
|
|
}
|
|
return ( ber_pvt_sb_grow_buffer( p, *((int *)arg) ) ?
|
|
-1 : 1 );
|
|
}
|
|
|
|
return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
|
|
}
|
|
|
|
Sockbuf_IO ber_sockbuf_io_readahead = {
|
|
sb_rdahead_setup, /* sbi_setup */
|
|
sb_rdahead_remove, /* sbi_remove */
|
|
sb_rdahead_ctrl, /* sbi_ctrl */
|
|
sb_rdahead_read, /* sbi_read */
|
|
sb_rdahead_write, /* sbi_write */
|
|
sb_rdahead_close /* sbi_close */
|
|
};
|
|
|
|
/*
|
|
* Support for simple file IO
|
|
*/
|
|
|
|
static ber_slen_t
|
|
sb_fd_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len )
|
|
{
|
|
assert( sbiod != NULL);
|
|
assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
|
|
|
|
#ifdef LDAP_PF_LOCAL_SENDMSG
|
|
if ( sbiod->sbiod_sb->sb_ungetlen ) {
|
|
ber_len_t blen = sbiod->sbiod_sb->sb_ungetlen;
|
|
if ( blen > len )
|
|
blen = len;
|
|
AC_MEMCPY( buf, sbiod->sbiod_sb->sb_ungetbuf, blen );
|
|
buf = (char *) buf + blen;
|
|
len -= blen;
|
|
sbiod->sbiod_sb->sb_ungetlen -= blen;
|
|
if ( sbiod->sbiod_sb->sb_ungetlen ) {
|
|
AC_MEMCPY( sbiod->sbiod_sb->sb_ungetbuf,
|
|
sbiod->sbiod_sb->sb_ungetbuf+blen,
|
|
sbiod->sbiod_sb->sb_ungetlen );
|
|
}
|
|
if ( len == 0 )
|
|
return blen;
|
|
}
|
|
#endif
|
|
return read( sbiod->sbiod_sb->sb_fd, buf, len );
|
|
}
|
|
|
|
static ber_slen_t
|
|
sb_fd_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len )
|
|
{
|
|
assert( sbiod != NULL);
|
|
assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
|
|
|
|
return write( sbiod->sbiod_sb->sb_fd, buf, len );
|
|
}
|
|
|
|
static int
|
|
sb_fd_close( Sockbuf_IO_Desc *sbiod )
|
|
{
|
|
assert( sbiod != NULL );
|
|
assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
|
|
|
|
close( sbiod->sbiod_sb->sb_fd );
|
|
return 0;
|
|
}
|
|
|
|
/* The argument is a pointer to the file descriptor */
|
|
static int
|
|
sb_fd_setup( Sockbuf_IO_Desc *sbiod, void *arg ) {
|
|
assert( sbiod != NULL );
|
|
|
|
if ( arg != NULL )
|
|
sbiod->sbiod_sb->sb_fd = *((int *)arg);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
sb_fd_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg ) {
|
|
/* This is an end IO descriptor */
|
|
return 0;
|
|
}
|
|
|
|
Sockbuf_IO ber_sockbuf_io_fd = {
|
|
sb_fd_setup, /* sbi_setup */
|
|
NULL, /* sbi_remove */
|
|
sb_fd_ctrl, /* sbi_ctrl */
|
|
sb_fd_read, /* sbi_read */
|
|
sb_fd_write, /* sbi_write */
|
|
sb_fd_close /* sbi_close */
|
|
};
|
|
|
|
/*
|
|
* Debugging layer
|
|
*/
|
|
|
|
static int
|
|
sb_debug_setup( Sockbuf_IO_Desc *sbiod, void *arg )
|
|
{
|
|
assert( sbiod != NULL );
|
|
|
|
if ( arg == NULL ) arg = "sockbuf_";
|
|
|
|
sbiod->sbiod_pvt = LBER_MALLOC( strlen( arg ) + 1 );
|
|
if ( sbiod->sbiod_pvt == NULL ) return -1;
|
|
|
|
strcpy( (char *)sbiod->sbiod_pvt, (char *)arg );
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
sb_debug_remove( Sockbuf_IO_Desc *sbiod )
|
|
{
|
|
assert( sbiod != NULL );
|
|
assert( sbiod->sbiod_pvt != NULL );
|
|
|
|
LBER_FREE( sbiod->sbiod_pvt );
|
|
sbiod->sbiod_pvt = NULL;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
sb_debug_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
|
|
{
|
|
return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
|
|
}
|
|
|
|
static ber_slen_t
|
|
sb_debug_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len )
|
|
{
|
|
ber_slen_t ret;
|
|
char ebuf[128];
|
|
|
|
ret = LBER_SBIOD_READ_NEXT( sbiod, buf, len );
|
|
if (sbiod->sbiod_sb->sb_debug & LDAP_DEBUG_PACKETS) {
|
|
int err = sock_errno();
|
|
if ( ret < 0 ) {
|
|
ber_log_printf( LDAP_DEBUG_PACKETS, sbiod->sbiod_sb->sb_debug,
|
|
"%sread: want=%ld error=%s\n", (char *)sbiod->sbiod_pvt,
|
|
(long)len, AC_STRERROR_R( err, ebuf, sizeof ebuf ) );
|
|
} else {
|
|
ber_log_printf( LDAP_DEBUG_PACKETS, sbiod->sbiod_sb->sb_debug,
|
|
"%sread: want=%ld, got=%ld\n", (char *)sbiod->sbiod_pvt,
|
|
(long)len, (long)ret );
|
|
ber_log_bprint( LDAP_DEBUG_PACKETS, sbiod->sbiod_sb->sb_debug,
|
|
(const char *)buf, ret );
|
|
}
|
|
sock_errset(err);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static ber_slen_t
|
|
sb_debug_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len )
|
|
{
|
|
ber_slen_t ret;
|
|
char ebuf[128];
|
|
|
|
ret = LBER_SBIOD_WRITE_NEXT( sbiod, buf, len );
|
|
if (sbiod->sbiod_sb->sb_debug & LDAP_DEBUG_PACKETS) {
|
|
int err = sock_errno();
|
|
if ( ret < 0 ) {
|
|
ber_log_printf( LDAP_DEBUG_PACKETS, sbiod->sbiod_sb->sb_debug,
|
|
"%swrite: want=%ld error=%s\n",
|
|
(char *)sbiod->sbiod_pvt, (long)len,
|
|
AC_STRERROR_R( err, ebuf, sizeof ebuf ) );
|
|
} else {
|
|
ber_log_printf( LDAP_DEBUG_PACKETS, sbiod->sbiod_sb->sb_debug,
|
|
"%swrite: want=%ld, written=%ld\n",
|
|
(char *)sbiod->sbiod_pvt, (long)len, (long)ret );
|
|
ber_log_bprint( LDAP_DEBUG_PACKETS, sbiod->sbiod_sb->sb_debug,
|
|
(const char *)buf, ret );
|
|
}
|
|
sock_errset(err);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
Sockbuf_IO ber_sockbuf_io_debug = {
|
|
sb_debug_setup, /* sbi_setup */
|
|
sb_debug_remove, /* sbi_remove */
|
|
sb_debug_ctrl, /* sbi_ctrl */
|
|
sb_debug_read, /* sbi_read */
|
|
sb_debug_write, /* sbi_write */
|
|
NULL /* sbi_close */
|
|
};
|
|
|
|
#ifdef LDAP_CONNECTIONLESS
|
|
|
|
/*
|
|
* Support for UDP (CLDAP)
|
|
*
|
|
* All I/O at this level must be atomic. For ease of use, the sb_readahead
|
|
* must be used above this module. All data reads and writes are prefixed
|
|
* with a sockaddr containing the address of the remote entity. Upper levels
|
|
* must read and write this sockaddr before doing the usual ber_printf/scanf
|
|
* operations on LDAP messages.
|
|
*/
|
|
|
|
static int
|
|
sb_dgram_setup( Sockbuf_IO_Desc *sbiod, void *arg )
|
|
{
|
|
assert( sbiod != NULL);
|
|
assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
|
|
|
|
if ( arg != NULL ) sbiod->sbiod_sb->sb_fd = *((int *)arg);
|
|
return 0;
|
|
}
|
|
|
|
static ber_slen_t
|
|
sb_dgram_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len )
|
|
{
|
|
ber_slen_t rc;
|
|
ber_socklen_t addrlen;
|
|
struct sockaddr *src;
|
|
|
|
assert( sbiod != NULL );
|
|
assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
|
|
assert( buf != NULL );
|
|
|
|
addrlen = sizeof( struct sockaddr );
|
|
src = buf;
|
|
buf = (char *) buf + addrlen;
|
|
len -= addrlen;
|
|
rc = recvfrom( sbiod->sbiod_sb->sb_fd, buf, len, 0, src, &addrlen );
|
|
|
|
return rc > 0 ? rc+sizeof(struct sockaddr) : rc;
|
|
}
|
|
|
|
static ber_slen_t
|
|
sb_dgram_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len )
|
|
{
|
|
ber_slen_t rc;
|
|
struct sockaddr *dst;
|
|
|
|
assert( sbiod != NULL );
|
|
assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
|
|
assert( buf != NULL );
|
|
|
|
dst = buf;
|
|
buf = (char *) buf + sizeof( struct sockaddr );
|
|
len -= sizeof( struct sockaddr );
|
|
|
|
rc = sendto( sbiod->sbiod_sb->sb_fd, buf, len, 0, dst,
|
|
sizeof( struct sockaddr ) );
|
|
|
|
if ( rc < 0 ) return -1;
|
|
|
|
/* fake error if write was not atomic */
|
|
if (rc < len) {
|
|
# ifdef EMSGSIZE
|
|
errno = EMSGSIZE;
|
|
# endif
|
|
return -1;
|
|
}
|
|
rc = len + sizeof(struct sockaddr);
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
sb_dgram_close( Sockbuf_IO_Desc *sbiod )
|
|
{
|
|
assert( sbiod != NULL );
|
|
assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
|
|
|
|
tcp_close( sbiod->sbiod_sb->sb_fd );
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
sb_dgram_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
|
|
{
|
|
/* This is an end IO descriptor */
|
|
return 0;
|
|
}
|
|
|
|
Sockbuf_IO ber_sockbuf_io_udp =
|
|
{
|
|
sb_dgram_setup, /* sbi_setup */
|
|
NULL, /* sbi_remove */
|
|
sb_dgram_ctrl, /* sbi_ctrl */
|
|
sb_dgram_read, /* sbi_read */
|
|
sb_dgram_write, /* sbi_write */
|
|
sb_dgram_close /* sbi_close */
|
|
};
|
|
|
|
#endif /* LDAP_CONNECTIONLESS */
|