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

/*
 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This 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 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	*
e5568f75 A	6	* The contents of this file constitute Original Code as defined in and
	7	* are subject to the Apple Public Source License Version 1.1 (the
	8	* "License"). You may not use this file except in compliance with the
	9	* License. Please obtain a copy of the License at
	10	* http://www.apple.com/publicsource and read it before using this file.
1c79356b	11	*
e5568f75 A	12	* This Original Code and all software distributed under the License are
e5568f75 A	13	* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
1c79356b A	14	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
1c79356b A	15	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
e5568f75 A	16	* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
	17	* License for the specific language governing rights and limitations
	18	* under the License.
1c79356b A	19	*
	20	* @APPLE_LICENSE_HEADER_END@
	21	*/
	22	/*
	23	* Copyright (c) 1980, 1986, 1993
	24	* The Regents of the University of California. All rights reserved.
	25	*
	26	* Redistribution and use in source and binary forms, with or without
	27	* modification, are permitted provided that the following conditions
	28	* are met:
	29	* 1. Redistributions of source code must retain the above copyright
	30	* notice, this list of conditions and the following disclaimer.
	31	* 2. Redistributions in binary form must reproduce the above copyright
	32	* notice, this list of conditions and the following disclaimer in the
	33	* documentation and/or other materials provided with the distribution.
	34	* 3. All advertising materials mentioning features or use of this software
	35	* must display the following acknowledgement:
	36	* This product includes software developed by the University of
	37	* California, Berkeley and its contributors.
	38	* 4. Neither the name of the University nor the names of its contributors
	39	* may be used to endorse or promote products derived from this software
	40	* without specific prior written permission.
	41	*
	42	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	43	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	44	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	45	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	46	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	47	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	48	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	49	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	50	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	51	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	52	* SUCH DAMAGE.
	53	*
	54	* @(#)raw_usrreq.c 8.1 (Berkeley) 6/10/93
9bccf70c	55	* $FreeBSD: src/sys/net/raw_usrreq.c,v 1.18 1999/08/28 00:48:28 peter Exp $
1c79356b A	56	*/
	57
	58	#include <sys/param.h>
	59	#include <sys/systm.h>
	60	#include <sys/mbuf.h>
	61	#include <sys/proc.h>
	62	#include <sys/protosw.h>
	63	#include <sys/socket.h>
	64	#include <sys/socketvar.h>
	65
	66	#include <net/raw_cb.h>
	67
	68	/*
	69	* Initialize raw connection block q.
	70	*/
	71	void
	72	raw_init()
	73	{
	74	LIST_INIT(&rawcb_list);
	75	}
	76
	77
	78	/*
	79	* Raw protocol input routine. Find the socket
	80	* associated with the packet(s) and move them over. If
	81	* nothing exists for this packet, drop it.
	82	*/
	83	/*
	84	* Raw protocol interface.
	85	*/
	86	void
	87	raw_input(m0, proto, src, dst)
	88	struct mbuf *m0;
	89	register struct sockproto *proto;
	90	struct sockaddr src, dst;
	91	{
	92	register struct rawcb *rp;
	93	register struct mbuf *m = m0;
	94	register int sockets = 0;
	95	struct socket *last;
	96
	97	last = 0;
	98	LIST_FOREACH(rp, &rawcb_list, list) {
	99	if (rp->rcb_proto.sp_family != proto->sp_family)
	100	continue;
	101	if (rp->rcb_proto.sp_protocol &&
	102	rp->rcb_proto.sp_protocol != proto->sp_protocol)
	103	continue;
	104	/*
	105	* We assume the lower level routines have
	106	* placed the address in a canonical format
	107	* suitable for a structure comparison.
	108	*
	109	* Note that if the lengths are not the same
	110	* the comparison will fail at the first byte.
	111	*/
	112	#define equal(a1, a2) \
	113	(bcmp((caddr_t)(a1), (caddr_t)(a2), a1->sa_len) == 0)
	114	if (rp->rcb_laddr && !equal(rp->rcb_laddr, dst))
	115	continue;
	116	if (rp->rcb_faddr && !equal(rp->rcb_faddr, src))
	117	continue;
	118	if (last) {
	119	struct mbuf *n;
120	n = m_copy(m, 0, (int)M_COPYALL);
121	if (n) {
122	if (sbappendaddr(&last->so_rcv, src,
123	n, (struct mbuf *)0) == 0)
124	/* should notify about lost packet */
125	m_freem(n);
126	else {
127	sorwakeup(last);
128	sockets++;
129	}
130	}
131	}
132	last = rp->rcb_socket;
133	}
134	if (last) {
135	if (sbappendaddr(&last->so_rcv, src,
136	m, (struct mbuf *)0) == 0)
137	m_freem(m);
138	else {
139	sorwakeup(last);
140	sockets++;
141	}
142	} else
143	m_freem(m);
144	}
145
146	/ARGSUSED/
147	void
148	raw_ctlinput(cmd, arg, dummy)
149	int cmd;
150	struct sockaddr *arg;
151	void *dummy;
152	{
153
154	if (cmd < 0 \|\| cmd > PRC_NCMDS)
155	return;
156	/* INCOMPLETE */
157	}
158
159	static int
160	raw_uabort(struct socket *so)
161	{
162	struct rawcb *rp = sotorawcb(so);
163
164	if (rp == 0)
165	return EINVAL;
166	raw_disconnect(rp);
167	sofree(so);
168	soisdisconnected(so);
169	return 0;
170	}
171
172	/* pru_accept is EOPNOTSUPP */
173
174	static int
175	raw_uattach(struct socket so, int proto, struct proc p)
176	{
177	struct rawcb *rp = sotorawcb(so);
178	int error;
179
180	if (rp == 0)
181	return EINVAL;
9bccf70c	182	#ifdef __APPLE__
1c79356b A	183	if ((so->so_state & SS_PRIV) == 0)
1c79356b A	184	return (EPERM);
9bccf70c A	185	#else
	186	if (p && (error = suser(p)) != 0)
	187	return error;
1c79356b	188	#endif
1c79356b A	189	return raw_attach(so, proto);
	190	}
	191
	192	static int
	193	raw_ubind(struct socket so, struct sockaddr nam, struct proc *p)
	194	{
	195	return EINVAL;
	196	}
	197
	198	static int
	199	raw_uconnect(struct socket so, struct sockaddr nam, struct proc *p)
	200	{
	201	return EINVAL;
	202	}
	203
	204	/* pru_connect2 is EOPNOTSUPP */
	205	/* pru_control is EOPNOTSUPP */
	206
	207	static int
	208	raw_udetach(struct socket *so)
	209	{
	210	struct rawcb *rp = sotorawcb(so);
	211
	212	if (rp == 0)
	213	return EINVAL;
	214
	215	raw_detach(rp);
	216	return 0;
	217	}
	218
	219	static int
	220	raw_udisconnect(struct socket *so)
	221	{
	222	struct rawcb *rp = sotorawcb(so);
	223
	224	if (rp == 0)
	225	return EINVAL;
	226	if (rp->rcb_faddr == 0) {
	227	return ENOTCONN;
	228	}
	229	raw_disconnect(rp);
	230	soisdisconnected(so);
	231	return 0;
	232	}
	233
	234	/* pru_listen is EOPNOTSUPP */
	235
	236	static int
	237	raw_upeeraddr(struct socket so, struct sockaddr *nam)
	238	{
	239	struct rawcb *rp = sotorawcb(so);
	240
	241	if (rp == 0)
	242	return EINVAL;
	243	if (rp->rcb_faddr == 0) {
	244	return ENOTCONN;
	245	}
	246	*nam = dup_sockaddr(rp->rcb_faddr, 1);
	247	return 0;
	248	}
	249
	250	/* pru_rcvd is EOPNOTSUPP */
	251	/* pru_rcvoob is EOPNOTSUPP */
	252
253	static int
254	raw_usend(struct socket so, int flags, struct mbuf m,
255	struct sockaddr nam, struct mbuf control, struct proc *p)
256	{
257	int error;
258	struct rawcb *rp = sotorawcb(so);
259
260	if (rp == 0) {
261	error = EINVAL;
262	goto release;
263	}
264
265	if (flags & PRUS_OOB) {
266	error = EOPNOTSUPP;
267	goto release;
268	}
269
270	if (control && control->m_len) {
271	error = EOPNOTSUPP;
272	goto release;
273	}
274	if (nam) {
275	if (rp->rcb_faddr) {
276	error = EISCONN;
277	goto release;
278	}
279	rp->rcb_faddr = nam;
280	} else if (rp->rcb_faddr == 0) {
281	error = ENOTCONN;
282	goto release;
283	}
284	error = (*so->so_proto->pr_output)(m, so);
285	m = NULL;
286	if (nam)
287	rp->rcb_faddr = 0;
288	release:
289	if (m != NULL)
290	m_freem(m);
291	return (error);
292	}
293
294	/* pru_sense is null */
295
296	static int
297	raw_ushutdown(struct socket *so)
298	{
299	struct rawcb *rp = sotorawcb(so);
300
301	if (rp == 0)
302	return EINVAL;
303	socantsendmore(so);
304	return 0;
305	}
306
307	static int
308	raw_usockaddr(struct socket so, struct sockaddr *nam)
309	{
310	struct rawcb *rp = sotorawcb(so);
311
312	if (rp == 0)
313	return EINVAL;
314	if (rp->rcb_laddr == 0)
315	return EINVAL;
316	*nam = dup_sockaddr(rp->rcb_laddr, 1);
317	return 0;
318	}
319
320	struct pr_usrreqs raw_usrreqs = {
321	raw_uabort, pru_accept_notsupp, raw_uattach, raw_ubind, raw_uconnect,
322	pru_connect2_notsupp, pru_control_notsupp, raw_udetach,
323	raw_udisconnect, pru_listen_notsupp, raw_upeeraddr, pru_rcvd_notsupp,
324	pru_rcvoob_notsupp, raw_usend, pru_sense_null, raw_ushutdown,
325	raw_usockaddr, sosend, soreceive, sopoll
326	};