ece06026a5
MFC after: 3 days
257 lines
6.1 KiB
C
257 lines
6.1 KiB
C
/*
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* client.c
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*/
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/*-
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* Copyright (c) 2006 Maksim Yevmenkin <m_evmenkin@yahoo.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: client.c,v 1.7 2006/09/07 21:06:53 max Exp $
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* $FreeBSD$
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*/
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#include <sys/queue.h>
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#include <assert.h>
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#include <bluetooth.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <syslog.h>
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#include <unistd.h>
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#include <usbhid.h>
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#include "bthid_config.h"
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#include "bthidd.h"
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static int32_t client_socket(bdaddr_p bdaddr, uint16_t psm);
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/*
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* Get next config entry and create outbound connection (if required)
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*
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* XXX Do only one device at a time. At least one of my devices (3COM
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* Bluetooth PCCARD) rejects Create_Connection command if another
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* Create_Connection command is still pending. Weird...
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*/
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static int32_t connect_in_progress = 0;
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int32_t
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client_rescan(bthid_server_p srv)
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{
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static hid_device_p d;
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bthid_session_p s;
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assert(srv != NULL);
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if (connect_in_progress)
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return (0); /* another connect is still pending */
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d = get_next_hid_device(d);
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if (d == NULL)
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return (0); /* XXX should not happen? empty config? */
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if ((s = session_by_bdaddr(srv, &d->bdaddr)) != NULL)
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return (0); /* session already active */
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if (!d->new_device) {
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if (d->reconnect_initiate)
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return (0); /* device will initiate reconnect */
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}
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syslog(LOG_NOTICE, "Opening outbound session for %s " \
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"(new_device=%d, reconnect_initiate=%d)",
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bt_ntoa(&d->bdaddr, NULL), d->new_device, d->reconnect_initiate);
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if ((s = session_open(srv, d)) == NULL) {
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syslog(LOG_CRIT, "Could not create outbound session for %s",
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bt_ntoa(&d->bdaddr, NULL));
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return (-1);
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}
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/* Open control channel */
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s->ctrl = client_socket(&s->bdaddr, d->control_psm);
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if (s->ctrl < 0) {
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syslog(LOG_ERR, "Could not open control channel to %s. %s (%d)",
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bt_ntoa(&s->bdaddr, NULL), strerror(errno), errno);
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session_close(s);
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return (-1);
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}
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s->state = W4CTRL;
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FD_SET(s->ctrl, &srv->wfdset);
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if (s->ctrl > srv->maxfd)
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srv->maxfd = s->ctrl;
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connect_in_progress = 1;
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return (0);
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}
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/*
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* Process connect on the socket
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*/
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int32_t
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client_connect(bthid_server_p srv, int32_t fd)
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{
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bthid_session_p s;
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hid_device_p d;
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int32_t error;
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socklen_t len;
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assert(srv != NULL);
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assert(fd >= 0);
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s = session_by_fd(srv, fd);
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assert(s != NULL);
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d = get_hid_device(&s->bdaddr);
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assert(d != NULL);
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error = 0;
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len = sizeof(error);
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if (getsockopt(fd, SOL_SOCKET, SO_ERROR, &error, &len) < 0) {
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syslog(LOG_ERR, "Could not get socket error for %s. %s (%d)",
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bt_ntoa(&s->bdaddr, NULL), strerror(errno), errno);
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session_close(s);
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connect_in_progress = 0;
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return (-1);
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}
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if (error != 0) {
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syslog(LOG_ERR, "Could not connect to %s. %s (%d)",
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bt_ntoa(&s->bdaddr, NULL), strerror(error), error);
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session_close(s);
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connect_in_progress = 0;
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return (0);
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}
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switch (s->state) {
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case W4CTRL: /* Control channel is open */
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assert(s->ctrl == fd);
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assert(s->intr == -1);
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/* Open interrupt channel */
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s->intr = client_socket(&s->bdaddr, d->interrupt_psm);
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if (s->intr < 0) {
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syslog(LOG_ERR, "Could not open interrupt channel " \
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"to %s. %s (%d)", bt_ntoa(&s->bdaddr, NULL),
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strerror(errno), errno);
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session_close(s);
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connect_in_progress = 0;
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return (-1);
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}
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s->state = W4INTR;
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FD_SET(s->intr, &srv->wfdset);
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if (s->intr > srv->maxfd)
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srv->maxfd = s->intr;
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d->new_device = 0; /* reset new device flag */
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write_hids_file();
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break;
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case W4INTR: /* Interrupt channel is open */
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assert(s->ctrl != -1);
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assert(s->intr == fd);
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s->state = OPEN;
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connect_in_progress = 0;
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/* Register session's vkbd descriptor (if any) for read */
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if (s->state == OPEN && d->keyboard) {
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assert(s->vkbd != -1);
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FD_SET(s->vkbd, &srv->rfdset);
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if (s->vkbd > srv->maxfd)
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srv->maxfd = s->vkbd;
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}
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break;
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default:
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assert(0);
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break;
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}
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/* Move fd to from the write fd set into read fd set */
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FD_CLR(fd, &srv->wfdset);
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FD_SET(fd, &srv->rfdset);
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return (0);
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}
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/*
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* Create bound non-blocking socket and initiate connect
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*/
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static int
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client_socket(bdaddr_p bdaddr, uint16_t psm)
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{
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struct sockaddr_l2cap l2addr;
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int32_t s, m;
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s = socket(PF_BLUETOOTH, SOCK_SEQPACKET, BLUETOOTH_PROTO_L2CAP);
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if (s < 0)
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return (-1);
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m = fcntl(s, F_GETFL);
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if (m < 0) {
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close(s);
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return (-1);
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}
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if (fcntl(s, F_SETFL, (m|O_NONBLOCK)) < 0) {
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close(s);
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return (-1);
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}
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l2addr.l2cap_len = sizeof(l2addr);
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l2addr.l2cap_family = AF_BLUETOOTH;
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memset(&l2addr.l2cap_bdaddr, 0, sizeof(l2addr.l2cap_bdaddr));
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l2addr.l2cap_psm = 0;
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if (bind(s, (struct sockaddr *) &l2addr, sizeof(l2addr)) < 0) {
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close(s);
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return (-1);
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}
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memcpy(&l2addr.l2cap_bdaddr, bdaddr, sizeof(l2addr.l2cap_bdaddr));
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l2addr.l2cap_psm = htole16(psm);
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if (connect(s, (struct sockaddr *) &l2addr, sizeof(l2addr)) < 0 &&
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errno != EINPROGRESS) {
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close(s);
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return (-1);
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}
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return (s);
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}
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