[apple/xnu.git] / bsd / net / raw_usrreq.c

/*
 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/*
 * Copyright (c) 1980, 1986, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)raw_usrreq.c	8.1 (Berkeley) 6/10/93
 * $FreeBSD: src/sys/net/raw_usrreq.c,v 1.18 1999/08/28 00:48:28 peter Exp $
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/proc.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <sys/socketvar.h>

#include <net/raw_cb.h>

/*
 * Initialize raw connection block q.
 */
void
raw_init()
{
	LIST_INIT(&rawcb_list);
}


/*
 * Raw protocol input routine.  Find the socket
 * associated with the packet(s) and move them over.  If
 * nothing exists for this packet, drop it.
 */
/*
 * Raw protocol interface.
 */
void
raw_input(m0, proto, src, dst)
	struct mbuf *m0;
	register struct sockproto *proto;
	struct sockaddr *src, *dst;
{
	register struct rawcb *rp;
	register struct mbuf *m = m0;
	register int sockets = 0;
	struct socket *last;

	last = 0;
	LIST_FOREACH(rp, &rawcb_list, list) {
		if (rp->rcb_proto.sp_family != proto->sp_family)
			continue;
		if (rp->rcb_proto.sp_protocol  &&
		    rp->rcb_proto.sp_protocol != proto->sp_protocol)
			continue;
		/*
		 * We assume the lower level routines have
		 * placed the address in a canonical format
		 * suitable for a structure comparison.
		 *
		 * Note that if the lengths are not the same
		 * the comparison will fail at the first byte.
		 */
#define	equal(a1, a2) \
  (bcmp((caddr_t)(a1), (caddr_t)(a2), a1->sa_len) == 0)
		if (rp->rcb_laddr && !equal(rp->rcb_laddr, dst))
			continue;
		if (rp->rcb_faddr && !equal(rp->rcb_faddr, src))
			continue;
		if (last) {
			struct mbuf *n;
			n = m_copy(m, 0, (int)M_COPYALL);
			if (n) {
				if (sbappendaddr(&last->so_rcv, src,
				    n, (struct mbuf *)0) == 0)
					/* should notify about lost packet */
					m_freem(n);
				else {
					sorwakeup(last);
					sockets++;
				}
			}
		}
		last = rp->rcb_socket;
	}
	if (last) {
		if (sbappendaddr(&last->so_rcv, src,
		    m, (struct mbuf *)0) == 0)
			m_freem(m);
		else {
			sorwakeup(last);
			sockets++;
		}
	} else
		m_freem(m);
}

/*ARGSUSED*/
void
raw_ctlinput(cmd, arg, dummy)
	int cmd;
	struct sockaddr *arg;
	void *dummy;
{

	if (cmd < 0 || cmd > PRC_NCMDS)
		return;
	/* INCOMPLETE */
}

static int
raw_uabort(struct socket *so)
{
	struct rawcb *rp = sotorawcb(so);

	if (rp == 0)
		return EINVAL;
	raw_disconnect(rp);
	sofree(so);
	soisdisconnected(so);
	return 0;
}

/* pru_accept is EOPNOTSUPP */

static int
raw_uattach(struct socket *so, int proto, struct proc *p)
{
	struct rawcb *rp = sotorawcb(so);
	int error;

	if (rp == 0)
		return EINVAL;
#ifdef __APPLE__
		if ((so->so_state & SS_PRIV) == 0)
			return (EPERM);
#else
	if (p && (error = suser(p)) != 0)
		return error;
#endif
	return raw_attach(so, proto);
}

static int
raw_ubind(struct socket *so, struct sockaddr *nam, struct proc *p)
{
	return EINVAL;
}

static int
raw_uconnect(struct socket *so, struct sockaddr *nam, struct proc *p)
{
	return EINVAL;
}

/* pru_connect2 is EOPNOTSUPP */
/* pru_control is EOPNOTSUPP */

static int
raw_udetach(struct socket *so)
{
	struct rawcb *rp = sotorawcb(so);

	if (rp == 0)
		return EINVAL;

	raw_detach(rp);
	return 0;
}

static int
raw_udisconnect(struct socket *so)
{
	struct rawcb *rp = sotorawcb(so);

	if (rp == 0)
		return EINVAL;
	if (rp->rcb_faddr == 0) {
		return ENOTCONN;
	}
	raw_disconnect(rp);
	soisdisconnected(so);
	return 0;
}

/* pru_listen is EOPNOTSUPP */

static int
raw_upeeraddr(struct socket *so, struct sockaddr **nam)
{
	struct rawcb *rp = sotorawcb(so);

	if (rp == 0)
		return EINVAL;
	if (rp->rcb_faddr == 0) {
		return ENOTCONN;
	}
	*nam = dup_sockaddr(rp->rcb_faddr, 1);
	return 0;
}

/* pru_rcvd is EOPNOTSUPP */
/* pru_rcvoob is EOPNOTSUPP */

static int
raw_usend(struct socket *so, int flags, struct mbuf *m,
	  struct sockaddr *nam, struct mbuf *control, struct proc *p)
{
	int error;
	struct rawcb *rp = sotorawcb(so);

	if (rp == 0) {
		error = EINVAL;
		goto release;
	}

	if (flags & PRUS_OOB) {
		error = EOPNOTSUPP;
		goto release;
	}

	if (control && control->m_len) {
		error = EOPNOTSUPP;
		goto release;
	}
	if (nam) {
		if (rp->rcb_faddr) {
			error = EISCONN;
			goto release;
		}
		rp->rcb_faddr = nam;
	} else if (rp->rcb_faddr == 0) {
		error = ENOTCONN;
		goto release;
	}
	error = (*so->so_proto->pr_output)(m, so);
	m = NULL;
	if (nam)
		rp->rcb_faddr = 0;
release:
	if (m != NULL)
		m_freem(m);
	return (error);
}

/* pru_sense is null */

static int
raw_ushutdown(struct socket *so)
{
	struct rawcb *rp = sotorawcb(so);

	if (rp == 0)
		return EINVAL;
	socantsendmore(so);
	return 0;
}

static int
raw_usockaddr(struct socket *so, struct sockaddr **nam)
{
	struct rawcb *rp = sotorawcb(so);

	if (rp == 0)
		return EINVAL;
	if (rp->rcb_laddr == 0)
		return EINVAL;
	*nam = dup_sockaddr(rp->rcb_laddr, 1);
	return 0;
}

struct pr_usrreqs raw_usrreqs = {
	raw_uabort, pru_accept_notsupp, raw_uattach, raw_ubind, raw_uconnect,
	pru_connect2_notsupp, pru_control_notsupp, raw_udetach, 
	raw_udisconnect, pru_listen_notsupp, raw_upeeraddr, pru_rcvd_notsupp,
	pru_rcvoob_notsupp, raw_usend, pru_sense_null, raw_ushutdown,
	raw_usockaddr, sosend, soreceive, sopoll
};
Commit	Line	Data
1c79356b A	1	/*
	2	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
43866e37	6	* Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
1c79356b	7	*
43866e37 A	8	* This file contains Original Code and/or Modifications of Original Code
	9	* as defined in and that are subject to the Apple Public Source License
	10	* Version 2.0 (the 'License'). You may not use this file except in
	11	* compliance with the License. Please obtain a copy of the License at
	12	* http://www.opensource.apple.com/apsl/ and read it before using this
	13	* file.
	14	*
	15	* The Original Code and all software distributed under the License are
	16	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
1c79356b A	17	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
1c79356b A	18	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
43866e37 A	19	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	20	* Please see the License for the specific language governing rights and
	21	* limitations under the License.
1c79356b A	22	*
	23	* @APPLE_LICENSE_HEADER_END@
	24	*/
	25	/*
	26	* Copyright (c) 1980, 1986, 1993
	27	* The Regents of the University of California. All rights reserved.
	28	*
	29	* Redistribution and use in source and binary forms, with or without
	30	* modification, are permitted provided that the following conditions
	31	* are met:
	32	* 1. Redistributions of source code must retain the above copyright
	33	* notice, this list of conditions and the following disclaimer.
	34	* 2. Redistributions in binary form must reproduce the above copyright
	35	* notice, this list of conditions and the following disclaimer in the
	36	* documentation and/or other materials provided with the distribution.
	37	* 3. All advertising materials mentioning features or use of this software
	38	* must display the following acknowledgement:
	39	* This product includes software developed by the University of
	40	* California, Berkeley and its contributors.
	41	* 4. Neither the name of the University nor the names of its contributors
	42	* may be used to endorse or promote products derived from this software
	43	* without specific prior written permission.
	44	*
	45	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	46	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	47	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	48	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	49	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	50	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	51	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	52	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	53	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	54	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	55	* SUCH DAMAGE.
	56	*
	57	* @(#)raw_usrreq.c 8.1 (Berkeley) 6/10/93
9bccf70c	58	* $FreeBSD: src/sys/net/raw_usrreq.c,v 1.18 1999/08/28 00:48:28 peter Exp $
1c79356b A	59	*/
	60
	61	#include <sys/param.h>
	62	#include <sys/systm.h>
	63	#include <sys/mbuf.h>
	64	#include <sys/proc.h>
	65	#include <sys/protosw.h>
	66	#include <sys/socket.h>
	67	#include <sys/socketvar.h>
	68
	69	#include <net/raw_cb.h>
	70
	71	/*
	72	* Initialize raw connection block q.
	73	*/
	74	void
	75	raw_init()
	76	{
	77	LIST_INIT(&rawcb_list);
	78	}
	79
	80
	81	/*
	82	* Raw protocol input routine. Find the socket
	83	* associated with the packet(s) and move them over. If
	84	* nothing exists for this packet, drop it.
	85	*/
	86	/*
	87	* Raw protocol interface.
	88	*/
	89	void
	90	raw_input(m0, proto, src, dst)
	91	struct mbuf *m0;
	92	register struct sockproto *proto;
	93	struct sockaddr src, dst;
	94	{
	95	register struct rawcb *rp;
	96	register struct mbuf *m = m0;
	97	register int sockets = 0;
	98	struct socket *last;
	99
	100	last = 0;
	101	LIST_FOREACH(rp, &rawcb_list, list) {
	102	if (rp->rcb_proto.sp_family != proto->sp_family)
	103	continue;
	104	if (rp->rcb_proto.sp_protocol &&
	105	rp->rcb_proto.sp_protocol != proto->sp_protocol)
	106	continue;
	107	/*
	108	* We assume the lower level routines have
	109	* placed the address in a canonical format
	110	* suitable for a structure comparison.
	111	*
	112	* Note that if the lengths are not the same
	113	* the comparison will fail at the first byte.
	114	*/
	115	#define equal(a1, a2) \
	116	(bcmp((caddr_t)(a1), (caddr_t)(a2), a1->sa_len) == 0)
	117	if (rp->rcb_laddr && !equal(rp->rcb_laddr, dst))
	118	continue;
	119	if (rp->rcb_faddr && !equal(rp->rcb_faddr, src))
	120	continue;
	121	if (last) {
	122	struct mbuf *n;
123	n = m_copy(m, 0, (int)M_COPYALL);
124	if (n) {
125	if (sbappendaddr(&last->so_rcv, src,
126	n, (struct mbuf *)0) == 0)
127	/* should notify about lost packet */
128	m_freem(n);
129	else {
130	sorwakeup(last);
131	sockets++;
132	}
133	}
134	}
135	last = rp->rcb_socket;
136	}
137	if (last) {
138	if (sbappendaddr(&last->so_rcv, src,
139	m, (struct mbuf *)0) == 0)
140	m_freem(m);
141	else {
142	sorwakeup(last);
143	sockets++;
144	}
145	} else
146	m_freem(m);
147	}
148
149	/ARGSUSED/
150	void
151	raw_ctlinput(cmd, arg, dummy)
152	int cmd;
153	struct sockaddr *arg;
154	void *dummy;
155	{
156
157	if (cmd < 0 \|\| cmd > PRC_NCMDS)
158	return;
159	/* INCOMPLETE */
160	}
161
162	static int
163	raw_uabort(struct socket *so)
164	{
165	struct rawcb *rp = sotorawcb(so);
166
167	if (rp == 0)
168	return EINVAL;
169	raw_disconnect(rp);
170	sofree(so);
171	soisdisconnected(so);
172	return 0;
173	}
174
175	/* pru_accept is EOPNOTSUPP */
176
177	static int
178	raw_uattach(struct socket so, int proto, struct proc p)
179	{
180	struct rawcb *rp = sotorawcb(so);
181	int error;
182
183	if (rp == 0)
184	return EINVAL;
9bccf70c	185	#ifdef __APPLE__
1c79356b A	186	if ((so->so_state & SS_PRIV) == 0)
1c79356b A	187	return (EPERM);
9bccf70c A	188	#else
	189	if (p && (error = suser(p)) != 0)
	190	return error;
1c79356b	191	#endif
1c79356b A	192	return raw_attach(so, proto);
	193	}
	194
	195	static int
	196	raw_ubind(struct socket so, struct sockaddr nam, struct proc *p)
	197	{
	198	return EINVAL;
	199	}
	200
	201	static int
	202	raw_uconnect(struct socket so, struct sockaddr nam, struct proc *p)
	203	{
	204	return EINVAL;
	205	}
	206
	207	/* pru_connect2 is EOPNOTSUPP */
	208	/* pru_control is EOPNOTSUPP */
	209
	210	static int
	211	raw_udetach(struct socket *so)
	212	{
	213	struct rawcb *rp = sotorawcb(so);
	214
	215	if (rp == 0)
	216	return EINVAL;
	217
	218	raw_detach(rp);
	219	return 0;
	220	}
	221
	222	static int
	223	raw_udisconnect(struct socket *so)
	224	{
	225	struct rawcb *rp = sotorawcb(so);
	226
	227	if (rp == 0)
	228	return EINVAL;
	229	if (rp->rcb_faddr == 0) {
	230	return ENOTCONN;
	231	}
	232	raw_disconnect(rp);
	233	soisdisconnected(so);
	234	return 0;
	235	}
	236
	237	/* pru_listen is EOPNOTSUPP */
	238
	239	static int
	240	raw_upeeraddr(struct socket so, struct sockaddr *nam)
	241	{
	242	struct rawcb *rp = sotorawcb(so);
	243
	244	if (rp == 0)
	245	return EINVAL;
	246	if (rp->rcb_faddr == 0) {
	247	return ENOTCONN;
	248	}
	249	*nam = dup_sockaddr(rp->rcb_faddr, 1);
	250	return 0;
	251	}
	252
	253	/* pru_rcvd is EOPNOTSUPP */
	254	/* pru_rcvoob is EOPNOTSUPP */
	255
256	static int
257	raw_usend(struct socket so, int flags, struct mbuf m,
258	struct sockaddr nam, struct mbuf control, struct proc *p)
259	{
260	int error;
261	struct rawcb *rp = sotorawcb(so);
262
263	if (rp == 0) {
264	error = EINVAL;
265	goto release;
266	}
267
268	if (flags & PRUS_OOB) {
269	error = EOPNOTSUPP;
270	goto release;
271	}
272
273	if (control && control->m_len) {
274	error = EOPNOTSUPP;
275	goto release;
276	}
277	if (nam) {
278	if (rp->rcb_faddr) {
279	error = EISCONN;
280	goto release;
281	}
282	rp->rcb_faddr = nam;
283	} else if (rp->rcb_faddr == 0) {
284	error = ENOTCONN;
285	goto release;
286	}
287	error = (*so->so_proto->pr_output)(m, so);
288	m = NULL;
289	if (nam)
290	rp->rcb_faddr = 0;
291	release:
292	if (m != NULL)
293	m_freem(m);
294	return (error);
295	}
296
297	/* pru_sense is null */
298
299	static int
300	raw_ushutdown(struct socket *so)
301	{
302	struct rawcb *rp = sotorawcb(so);
303
304	if (rp == 0)
305	return EINVAL;
306	socantsendmore(so);
307	return 0;
308	}
309
310	static int
311	raw_usockaddr(struct socket so, struct sockaddr *nam)
312	{
313	struct rawcb *rp = sotorawcb(so);
314
315	if (rp == 0)
316	return EINVAL;
317	if (rp->rcb_laddr == 0)
318	return EINVAL;
319	*nam = dup_sockaddr(rp->rcb_laddr, 1);
320	return 0;
321	}
322
323	struct pr_usrreqs raw_usrreqs = {
324	raw_uabort, pru_accept_notsupp, raw_uattach, raw_ubind, raw_uconnect,
325	pru_connect2_notsupp, pru_control_notsupp, raw_udetach,
326	raw_udisconnect, pru_listen_notsupp, raw_upeeraddr, pru_rcvd_notsupp,
327	pru_rcvoob_notsupp, raw_usend, pru_sense_null, raw_ushutdown,
328	raw_usockaddr, sosend, soreceive, sopoll
329	};