414 lines
9.0 KiB
C
414 lines
9.0 KiB
C
/* $NetBSD: rfcomm_socket.c,v 1.7 2007/04/21 06:15:23 plunky Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2006 Itronix Inc.
|
|
* All rights reserved.
|
|
*
|
|
* Written by Iain Hibbert for Itronix Inc.
|
|
*
|
|
* 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. The name of Itronix Inc. may not be used to endorse
|
|
* or promote products derived from this software without specific
|
|
* prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``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 ITRONIX INC. 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: rfcomm_socket.c,v 1.7 2007/04/21 06:15:23 plunky Exp $");
|
|
|
|
/* load symbolic names */
|
|
#ifdef BLUETOOTH_DEBUG
|
|
#define PRUREQUESTS
|
|
#define PRCOREQUESTS
|
|
#endif
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/domain.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/mbuf.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/protosw.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/socketvar.h>
|
|
#include <sys/systm.h>
|
|
|
|
#include <netbt/bluetooth.h>
|
|
#include <netbt/rfcomm.h>
|
|
|
|
/****************************************************************************
|
|
*
|
|
* RFCOMM SOCK_STREAM Sockets - serial line emulation
|
|
*
|
|
*/
|
|
|
|
static void rfcomm_connecting(void *);
|
|
static void rfcomm_connected(void *);
|
|
static void rfcomm_disconnected(void *, int);
|
|
static void *rfcomm_newconn(void *, struct sockaddr_bt *, struct sockaddr_bt *);
|
|
static void rfcomm_complete(void *, int);
|
|
static void rfcomm_linkmode(void *, int);
|
|
static void rfcomm_input(void *, struct mbuf *);
|
|
|
|
static const struct btproto rfcomm_proto = {
|
|
rfcomm_connecting,
|
|
rfcomm_connected,
|
|
rfcomm_disconnected,
|
|
rfcomm_newconn,
|
|
rfcomm_complete,
|
|
rfcomm_linkmode,
|
|
rfcomm_input,
|
|
};
|
|
|
|
/* sysctl variables */
|
|
int rfcomm_sendspace = 4096;
|
|
int rfcomm_recvspace = 4096;
|
|
|
|
/*
|
|
* User Request.
|
|
* up is socket
|
|
* m is either
|
|
* optional mbuf chain containing message
|
|
* ioctl command (PRU_CONTROL)
|
|
* nam is either
|
|
* optional mbuf chain containing an address
|
|
* ioctl data (PRU_CONTROL)
|
|
* optionally protocol number (PRU_ATTACH)
|
|
* message flags (PRU_RCVD)
|
|
* ctl is either
|
|
* optional mbuf chain containing socket options
|
|
* optional interface pointer (PRU_CONTROL, PRU_PURGEIF)
|
|
* l is pointer to process requesting action (if any)
|
|
*
|
|
* we are responsible for disposing of m and ctl if
|
|
* they are mbuf chains
|
|
*/
|
|
int
|
|
rfcomm_usrreq(struct socket *up, int req, struct mbuf *m,
|
|
struct mbuf *nam, struct mbuf *ctl, struct lwp *l)
|
|
{
|
|
struct rfcomm_dlc *pcb = up->so_pcb;
|
|
struct sockaddr_bt *sa;
|
|
struct mbuf *m0;
|
|
int err = 0;
|
|
|
|
DPRINTFN(2, "%s\n", prurequests[req]);
|
|
|
|
switch (req) {
|
|
case PRU_CONTROL:
|
|
return EPASSTHROUGH;
|
|
|
|
case PRU_PURGEIF:
|
|
return EOPNOTSUPP;
|
|
|
|
case PRU_ATTACH:
|
|
if (pcb != NULL)
|
|
return EINVAL;
|
|
|
|
/*
|
|
* Since we have nothing to add, we attach the DLC
|
|
* structure directly to our PCB pointer.
|
|
*/
|
|
err = rfcomm_attach((struct rfcomm_dlc **)&up->so_pcb,
|
|
&rfcomm_proto, up);
|
|
if (err)
|
|
return err;
|
|
|
|
err = soreserve(up, rfcomm_sendspace, rfcomm_recvspace);
|
|
if (err)
|
|
return err;
|
|
|
|
err = rfcomm_rcvd(up->so_pcb, sbspace(&up->so_rcv));
|
|
if (err)
|
|
return err;
|
|
|
|
return 0;
|
|
}
|
|
|
|
if (pcb == NULL) {
|
|
err = EINVAL;
|
|
goto release;
|
|
}
|
|
|
|
switch(req) {
|
|
case PRU_DISCONNECT:
|
|
soisdisconnecting(up);
|
|
return rfcomm_disconnect(pcb, up->so_linger);
|
|
|
|
case PRU_ABORT:
|
|
rfcomm_disconnect(pcb, 0);
|
|
soisdisconnected(up);
|
|
/* fall through to */
|
|
case PRU_DETACH:
|
|
return rfcomm_detach((struct rfcomm_dlc **)&up->so_pcb);
|
|
|
|
case PRU_BIND:
|
|
KASSERT(nam != NULL);
|
|
sa = mtod(nam, struct sockaddr_bt *);
|
|
|
|
if (sa->bt_len != sizeof(struct sockaddr_bt))
|
|
return EINVAL;
|
|
|
|
if (sa->bt_family != AF_BLUETOOTH)
|
|
return EAFNOSUPPORT;
|
|
|
|
return rfcomm_bind(pcb, sa);
|
|
|
|
case PRU_CONNECT:
|
|
KASSERT(nam != NULL);
|
|
sa = mtod(nam, struct sockaddr_bt *);
|
|
|
|
if (sa->bt_len != sizeof(struct sockaddr_bt))
|
|
return EINVAL;
|
|
|
|
if (sa->bt_family != AF_BLUETOOTH)
|
|
return EAFNOSUPPORT;
|
|
|
|
soisconnecting(up);
|
|
return rfcomm_connect(pcb, sa);
|
|
|
|
case PRU_PEERADDR:
|
|
KASSERT(nam != NULL);
|
|
sa = mtod(nam, struct sockaddr_bt *);
|
|
nam->m_len = sizeof(struct sockaddr_bt);
|
|
return rfcomm_peeraddr(pcb, sa);
|
|
|
|
case PRU_SOCKADDR:
|
|
KASSERT(nam != NULL);
|
|
sa = mtod(nam, struct sockaddr_bt *);
|
|
nam->m_len = sizeof(struct sockaddr_bt);
|
|
return rfcomm_sockaddr(pcb, sa);
|
|
|
|
case PRU_SHUTDOWN:
|
|
socantsendmore(up);
|
|
break;
|
|
|
|
case PRU_SEND:
|
|
KASSERT(m != NULL);
|
|
|
|
if (ctl) /* no use for that */
|
|
m_freem(ctl);
|
|
|
|
m0 = m_copypacket(m, M_DONTWAIT);
|
|
if (m0 == NULL)
|
|
return ENOMEM;
|
|
|
|
sbappendstream(&up->so_snd, m);
|
|
|
|
return rfcomm_send(pcb, m0);
|
|
|
|
case PRU_SENSE:
|
|
return 0; /* (no release) */
|
|
|
|
case PRU_RCVD:
|
|
return rfcomm_rcvd(pcb, sbspace(&up->so_rcv));
|
|
|
|
case PRU_RCVOOB:
|
|
return EOPNOTSUPP; /* (no release) */
|
|
|
|
case PRU_LISTEN:
|
|
return rfcomm_listen(pcb);
|
|
|
|
case PRU_ACCEPT:
|
|
KASSERT(nam != NULL);
|
|
sa = mtod(nam, struct sockaddr_bt *);
|
|
nam->m_len = sizeof(struct sockaddr_bt);
|
|
return rfcomm_peeraddr(pcb, sa);
|
|
|
|
case PRU_CONNECT2:
|
|
case PRU_SENDOOB:
|
|
case PRU_FASTTIMO:
|
|
case PRU_SLOWTIMO:
|
|
case PRU_PROTORCV:
|
|
case PRU_PROTOSEND:
|
|
err = EOPNOTSUPP;
|
|
break;
|
|
|
|
default:
|
|
UNKNOWN(req);
|
|
err = EOPNOTSUPP;
|
|
break;
|
|
}
|
|
|
|
release:
|
|
if (m) m_freem(m);
|
|
if (ctl) m_freem(ctl);
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* rfcomm_ctloutput(request, socket, level, optname, opt)
|
|
*
|
|
*/
|
|
int
|
|
rfcomm_ctloutput(int req, struct socket *so, int level,
|
|
int optname, struct mbuf **opt)
|
|
{
|
|
struct rfcomm_dlc *pcb = so->so_pcb;
|
|
struct mbuf *m;
|
|
int err = 0;
|
|
|
|
DPRINTFN(2, "%s\n", prcorequests[req]);
|
|
|
|
if (pcb == NULL)
|
|
return EINVAL;
|
|
|
|
if (level != BTPROTO_RFCOMM)
|
|
return ENOPROTOOPT;
|
|
|
|
switch(req) {
|
|
case PRCO_GETOPT:
|
|
m = m_get(M_WAIT, MT_SOOPTS);
|
|
m->m_len = rfcomm_getopt(pcb, optname, mtod(m, void *));
|
|
if (m->m_len == 0) {
|
|
m_freem(m);
|
|
m = NULL;
|
|
err = ENOPROTOOPT;
|
|
}
|
|
*opt = m;
|
|
break;
|
|
|
|
case PRCO_SETOPT:
|
|
m = *opt;
|
|
KASSERT(m != NULL);
|
|
err = rfcomm_setopt(pcb, optname, mtod(m, void *));
|
|
m_freem(m);
|
|
break;
|
|
|
|
default:
|
|
err = ENOPROTOOPT;
|
|
break;
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
/**********************************************************************
|
|
*
|
|
* RFCOMM callbacks
|
|
*/
|
|
|
|
static void
|
|
rfcomm_connecting(void *arg)
|
|
{
|
|
/* struct socket *so = arg; */
|
|
|
|
KASSERT(arg != NULL);
|
|
DPRINTF("Connecting\n");
|
|
}
|
|
|
|
static void
|
|
rfcomm_connected(void *arg)
|
|
{
|
|
struct socket *so = arg;
|
|
|
|
KASSERT(so != NULL);
|
|
DPRINTF("Connected\n");
|
|
soisconnected(so);
|
|
}
|
|
|
|
static void
|
|
rfcomm_disconnected(void *arg, int err)
|
|
{
|
|
struct socket *so = arg;
|
|
|
|
KASSERT(so != NULL);
|
|
DPRINTF("Disconnected\n");
|
|
|
|
so->so_error = err;
|
|
soisdisconnected(so);
|
|
}
|
|
|
|
static void *
|
|
rfcomm_newconn(void *arg, struct sockaddr_bt *laddr,
|
|
struct sockaddr_bt *raddr)
|
|
{
|
|
struct socket *so = arg;
|
|
|
|
DPRINTF("New Connection\n");
|
|
so = sonewconn(so, 0);
|
|
if (so == NULL)
|
|
return NULL;
|
|
|
|
soisconnecting(so);
|
|
|
|
return so->so_pcb;
|
|
}
|
|
|
|
/*
|
|
* rfcomm_complete(rfcomm_dlc, length)
|
|
*
|
|
* length bytes are sent and may be removed from socket buffer
|
|
*/
|
|
static void
|
|
rfcomm_complete(void *arg, int length)
|
|
{
|
|
struct socket *so = arg;
|
|
|
|
sbdrop(&so->so_snd, length);
|
|
sowwakeup(so);
|
|
}
|
|
|
|
/*
|
|
* rfcomm_linkmode(rfcomm_dlc, new)
|
|
*
|
|
* link mode change notification.
|
|
*/
|
|
static void
|
|
rfcomm_linkmode(void *arg, int new)
|
|
{
|
|
struct socket *so = arg;
|
|
int mode;
|
|
|
|
DPRINTF("auth %s, encrypt %s, secure %s\n",
|
|
(new & RFCOMM_LM_AUTH ? "on" : "off"),
|
|
(new & RFCOMM_LM_ENCRYPT ? "on" : "off"),
|
|
(new & RFCOMM_LM_SECURE ? "on" : "off"));
|
|
|
|
(void)rfcomm_getopt(so->so_pcb, SO_RFCOMM_LM, &mode);
|
|
if (((mode & RFCOMM_LM_AUTH) && !(new & RFCOMM_LM_AUTH))
|
|
|| ((mode & RFCOMM_LM_ENCRYPT) && !(new & RFCOMM_LM_ENCRYPT))
|
|
|| ((mode & RFCOMM_LM_SECURE) && !(new & RFCOMM_LM_SECURE)))
|
|
rfcomm_disconnect(so->so_pcb, 0);
|
|
}
|
|
|
|
/*
|
|
* rfcomm_input(rfcomm_dlc, mbuf)
|
|
*/
|
|
static void
|
|
rfcomm_input(void *arg, struct mbuf *m)
|
|
{
|
|
struct socket *so = arg;
|
|
|
|
KASSERT(so != NULL);
|
|
|
|
if (m->m_pkthdr.len > sbspace(&so->so_rcv)) {
|
|
printf("%s: %d bytes dropped (socket buffer full)\n",
|
|
__func__, m->m_pkthdr.len);
|
|
m_freem(m);
|
|
return;
|
|
}
|
|
|
|
DPRINTFN(10, "received %d bytes\n", m->m_pkthdr.len);
|
|
|
|
sbappendstream(&so->so_rcv, m);
|
|
sorwakeup(so);
|
|
}
|