2
* $Id: atp_sresp.c,v 1.4 2001/06/29 14:14:46 rufustfirefly Exp $
4
* Copyright (c) 1990,1991 Regents of The University of Michigan.
7
* Permission to use, copy, modify, and distribute this software and
8
* its documentation for any purpose and without fee is hereby granted,
9
* provided that the above copyright notice appears in all copies and
10
* that both that copyright notice and this permission notice appear
11
* in supporting documentation, and that the name of The University
12
* of Michigan not be used in advertising or publicity pertaining to
13
* distribution of the software without specific, written prior
14
* permission. This software is supplied as is without expressed or
15
* implied warranties of any kind.
17
* Research Systems Unix Group
18
* The University of Michigan
20
* 535 W. William Street
23
* netatalk@itd.umich.edu
28
#endif /* HAVE_CONFIG_H */
32
#include <sys/types.h>
36
#include <sys/socket.h>
38
#include <netatalk/at.h>
39
#include <netatalk/endian.h>
41
#include <atalk/netddp.h>
42
#include <atalk/atp.h>
43
#include <atalk/util.h>
45
#include "atp_internals.h"
47
/* send a transaction response
49
int atp_sresp( ah, atpb )
50
ATP ah; /* open atp handle */
51
struct atp_block *atpb; /* parameter block */
55
struct atpbuf *resp_buf;
56
struct atpbuf *save_buf;
59
atp_print_bufuse( ah, "atp_sresp" );
64
for ( i = atpb->atp_sresiovcnt - 1; i >= 0; --i ) {
65
if ( atpb->atp_sresiov[ i ].iov_len > ATP_MAXDATA )
68
if ( i >= 0 || atpb->atp_sresiovcnt < 1 || atpb->atp_sresiovcnt > 8 ) {
73
/* allocate a new buffer for reponse packet construction
75
if (( resp_buf = atp_alloc_buf()) == NULL ) {
79
/* send all the response packets
80
* also need to attach list to ah for dup. detection (if XO)
83
printf( "<%d> preparing to send %s response tid=%hu ", getpid(),
84
ah->atph_rxo ? "XO" : "", ah->atph_rtid );
85
atp_print_addr( " to", atpb->atp_saddr );
89
if (( save_buf = atp_alloc_buf()) == NULL ) {
93
save_buf->atpbuf_info.atpbuf_xo.atpxo_packet[ i++ ] = NULL );
95
for ( i = 0; i < atpb->atp_sresiovcnt; ++i ) {
99
#endif /* STS_RESPONSES */
100
if ( i == atpb->atp_sresiovcnt-1 ) {
103
atp_build_resp_packet( resp_buf, ah->atph_rtid, ctrlinfo, atpb, i );
105
if ( ah->atph_rxo ) {
106
save_buf->atpbuf_info.atpbuf_xo.atpxo_packet[i] = resp_buf;
109
if (( random() % 3 ) != 2 ) {
110
#endif /* DROPPACKETS */
112
printf( "<%d> sending packet tid=%hu serial no.=%d\n", getpid(),
114
bprint( resp_buf->atpbuf_info.atpbuf_data, resp_buf->atpbuf_dlen );
116
if ( netddp_sendto( ah->atph_socket, resp_buf->atpbuf_info.atpbuf_data,
117
resp_buf->atpbuf_dlen, 0, (struct sockaddr *) atpb->atp_saddr,
118
sizeof( struct sockaddr_at )) != resp_buf->atpbuf_dlen ) {
119
if ( ah->atph_rxo ) {
120
for ( ; i >= 0; --i ) {
121
atp_free_buf( save_buf->atpbuf_info.atpbuf_xo.atpxo_packet[ i ] );
123
atp_free_buf( save_buf );
128
} else printf( "<%d> atp_sresp: dropped serial no. %d\n", getpid(), i );
129
#endif /* DROPPACKETS */
130
/* allocate a buffer for next packet (if XO mode)
132
if ( ah->atph_rxo && ( resp_buf = atp_alloc_buf()) == NULL ) {
136
atp_free_buf( resp_buf );
137
if ( ah->atph_rxo ) {
138
/* record timestamp, tid, release time, and destination address
140
gettimeofday( &save_buf->atpbuf_info.atpbuf_xo.atpxo_tv,
141
(struct timezone *) 0 );
142
save_buf->atpbuf_info.atpbuf_xo.atpxo_tid = ah->atph_rtid;
143
save_buf->atpbuf_info.atpbuf_xo.atpxo_reltime = ah->atph_rreltime;
144
memcpy( &save_buf->atpbuf_addr, atpb->atp_saddr,
145
sizeof( struct sockaddr_at ));
147
/* add to list of packets we have sent
149
save_buf->atpbuf_next = ah->atph_sent;
150
ah->atph_sent = save_buf;
152
printf( "<%d> saved XO response\n", getpid());