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Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. No functional change intended.
261 lines
6.2 KiB
C
261 lines
6.2 KiB
C
/*
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* client.c
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*/
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/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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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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#define L2CAP_SOCKET_CHECKED
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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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l2addr.l2cap_bdaddr_type = BDADDR_BREDR;
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l2addr.l2cap_cid = 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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