1/*
2 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28/*
29 *	Copyright (c) 1988, 1989, 1997, 1998 Apple Computer, Inc.
30 *
31 *   Modified for MP, 1996 by Tuyen Nguyen
32 *   Modified, March 17, 1997 by Tuyen Nguyen for MacOSX.
33 */
34
35/* ddp_proto.c: 2.0, 1.23; 10/18/93; Apple Computer, Inc. */
36
37#include <sys/errno.h>
38#include <sys/types.h>
39#include <sys/param.h>
40#include <machine/spl.h>
41#include <sys/systm.h>
42#include <sys/kernel.h>
43#include <sys/proc.h>
44#include <sys/filedesc.h>
45#include <sys/fcntl.h>
46#include <sys/mbuf.h>
47#include <sys/ioctl.h>
48#include <sys/malloc.h>
49#include <sys/socket.h>
50#include <sys/socketvar.h>
51
52#include <net/if.h>
53
54#include <netat/sysglue.h>
55#include <netat/appletalk.h>
56#include <netat/at_pcb.h>
57#include <netat/at_var.h>
58#include <netat/ddp.h>
59#include <netat/zip.h>
60
61extern at_ifaddr_t *ifID_home;
62
63void ddp_putmsg(gref, mp)
64	gref_t *gref;
65	gbuf_t *mp;
66{
67	register ioc_t	*iocbp;
68	register int	error;
69	at_ddp_t *ddp;
70
71	switch(gbuf_type(mp)) {
72	case MSG_DATA :
73		/* If this message is going out on a socket that's not bound,
74		 * nail it.
75		 */
76		ddp = (at_ddp_t *)gbuf_rptr(mp);
77		if ((ddp->type == DDP_ATP) || (ddp->type == DDP_ADSP)) {
78			if ((gref == 0) || (gref->lport == 0)) {
79				int src_addr_included =
80				  ((ddp->type==DDP_ATP) && ddp->src_node)? 1 : 0;
81				(void)ddp_output(&mp, ddp->src_socket,
82						 src_addr_included);
83				return;
84			}
85		}
86
87		if ((gref == 0) || (gref->lport == 0)) {
88			gbuf_freel(mp);
89			if (gref)
90				atalk_notify(gref, ENOTCONN);
91			return;
92		}
93		if ((error = ddp_output(&mp, gref->lport, 0)) != 0) {
94			if (gref)
95				atalk_notify(gref, error);
96		}
97		return;
98
99	case MSG_IOCTL :
100		iocbp = (ioc_t *)gbuf_rptr(mp);
101		if (DDP_IOC_MYIOCTL(iocbp->ioc_cmd)) {
102			switch(iocbp->ioc_cmd) {
103			case DDP_IOC_GET_CFG :
104			  /* Note that DDP_IOC_GET_CFG / AppleTalk ddp_config()
105			     fills in the net and node of the ddp_addr_t param
106			     with the net and node of the default interface,
107			     not the net and node that has been bound, as
108			     getsockname() and sockopt DDP_GETSOCKNAME do.
109			  */
110#ifdef APPLETALK_DEBUG
111				kprintf("ddp_putmsg: DDP_IOC_GET_CFG\n");
112#endif
113				if (gbuf_cont(mp))
114					gbuf_freem(gbuf_cont(mp));
115				if ((gbuf_cont(mp) =
116				     gbuf_alloc(sizeof(ddp_addr_t),
117						PRI_MED)) == NULL) {
118					ioc_ack(ENOBUFS, mp, gref);
119					break;
120				}
121				{
122				/* *** was ddp_get_cfg() *** */
123				  ddp_addr_t *cfgp =
124				    (ddp_addr_t *)gbuf_rptr(gbuf_cont(mp));
125				  cfgp->inet.net = ifID_home->ifThisNode.s_net;
126				  cfgp->inet.node = ifID_home->ifThisNode.s_node;
127#ifdef NOT_YET
128				  cfgp->inet.net = gref->laddr.s_net;
129				  cfgp->inet.node = gref->laddr.s_node;
130#endif
131				  cfgp->inet.socket = gref->lport;
132				  cfgp->ddptype = gref->ddptype;
133				}
134				gbuf_wset(gbuf_cont(mp), sizeof(ddp_addr_t));
135				iocbp->ioc_count = sizeof(ddp_addr_t);
136				ioc_ack(0, mp, gref);
137				break;
138			default:
139				ioc_ack(EINVAL, mp, gref);
140				break;
141			}
142		} else {
143			/* Unknown ioctl */
144			ioc_ack(EINVAL, mp, gref);
145		}
146		break;
147	default :
148#ifdef APPLETALK_DEBUG
149		kprintf("unexpected message type in ddp_putmsg: %d/n",
150			gbuf_type(mp));
151#endif
152		gbuf_freem(mp);
153		break;
154	}
155	return;
156} /* ddp_putmsg */
157
158gbuf_t  *ddp_compress_msg(mp)
159register gbuf_t	*mp;
160{
161        register gbuf_t   *tmp;
162
163        while (gbuf_len(mp) == 0) {
164                tmp = mp;
165                mp = gbuf_cont(mp);
166                gbuf_freeb(tmp);
167
168		if (mp == NULL)
169		        break;
170	}
171	return (mp);
172}
173