usr.sbin/bluetooth/bthidd/session.c

   1 /*
   2  * session.c
   3  */
   4
   5 /*-
   6  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
   7  *
   8  * Copyright (c) 2006 Maksim Yevmenkin <m_evmenkin@yahoo.com>
   9  * All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  *
  32  * $Id: session.c,v 1.3 2006/09/07 21:06:53 max Exp $
  33  * $FreeBSD$
  34  */
  35
  36 #include <sys/queue.h>
  37 #include <assert.h>
  38 #define L2CAP_SOCKET_CHECKED
  39 #include <bluetooth.h>
  40 #include <errno.h>
  41 #include <fcntl.h>
  42 #include <stdio.h>
  43 #include <stdlib.h>
  44 #include <string.h>
  45 #include <syslog.h>
  46 #include <unistd.h>
  47 #include <usbhid.h>
  48 #include "bthid_config.h"
  49 #include "bthidd.h"
  50 #include "kbd.h"
  51
  52 /*
  53  * Create new session
  54  */
  55
  56 bthid_session_p
  57 session_open(bthid_server_p srv, hid_device_p const d)
  58 {
  59         bthid_session_p s;
  60
  61         assert(srv != NULL);
  62         assert(d != NULL);
  63
  64         if ((s = (bthid_session_p) malloc(sizeof(*s))) == NULL)
  65                 return (NULL);
  66
  67         s->srv = srv;
  68         memcpy(&s->bdaddr, &d->bdaddr, sizeof(s->bdaddr));
  69         s->ctrl = -1;
  70         s->intr = -1;
  71
  72         if (d->keyboard) {
  73                 /* Open /dev/vkbdctl */
  74                 s->vkbd = open("/dev/vkbdctl", O_RDWR);
  75                 if (s->vkbd < 0) {
  76                         syslog(LOG_ERR, "Could not open /dev/vkbdctl " \
  77                                 "for %s. %s (%d)", bt_ntoa(&s->bdaddr, NULL),
  78                                 strerror(errno), errno);
  79                         free(s);
  80                         return (NULL);
  81                 }
  82         } else
  83                 s->vkbd = -1;
  84
  85         s->state = CLOSED;
  86
  87         s->keys1 = bit_alloc(kbd_maxkey());
  88         if (s->keys1 == NULL) {
  89                 free(s);
  90                 return (NULL);
  91         }
  92
  93         s->keys2 = bit_alloc(kbd_maxkey());
  94         if (s->keys2 == NULL) {
  95                 free(s->keys1);
  96                 free(s);
  97                 return (NULL);
  98         }
  99
 100         LIST_INSERT_HEAD(&srv->sessions, s, next);
 101
 102         return (s);
 103 }
 104
 105 /*
 106  * Lookup session by bdaddr
 107  */
 108
 109 bthid_session_p
 110 session_by_bdaddr(bthid_server_p srv, bdaddr_p bdaddr)
 111 {
 112         bthid_session_p s;
 113
 114         assert(srv != NULL);
 115         assert(bdaddr != NULL);
 116
 117         LIST_FOREACH(s, &srv->sessions, next)
 118                 if (memcmp(&s->bdaddr, bdaddr, sizeof(s->bdaddr)) == 0)
 119                         break;
 120
 121         return (s);
 122 }
 123
 124 /*
 125  * Lookup session by fd
 126  */
 127
 128 bthid_session_p
 129 session_by_fd(bthid_server_p srv, int32_t fd)
 130 {
 131         bthid_session_p s;
 132
 133         assert(srv != NULL);
 134         assert(fd >= 0);
 135
 136         LIST_FOREACH(s, &srv->sessions, next)
 137                 if (s->ctrl == fd || s->intr == fd || s->vkbd == fd)
 138                         break;
 139
 140         return (s);
 141 }
 142
 143 /*
 144  * Close session
 145  */
 146
 147 void
 148 session_close(bthid_session_p s)
 149 {
 150         assert(s != NULL);
 151         assert(s->srv != NULL);
 152
 153         LIST_REMOVE(s, next);
 154
 155         if (s->intr != -1) {
 156                 FD_CLR(s->intr, &s->srv->rfdset);
 157                 FD_CLR(s->intr, &s->srv->wfdset);
 158                 close(s->intr);
 159
 160                 if (s->srv->maxfd == s->intr)
 161                         s->srv->maxfd --;
 162         }
 163
 164         if (s->ctrl != -1) {
 165                 FD_CLR(s->ctrl, &s->srv->rfdset);
 166                 FD_CLR(s->ctrl, &s->srv->wfdset);
 167                 close(s->ctrl);
 168
 169                 if (s->srv->maxfd == s->ctrl)
 170                         s->srv->maxfd --;
 171         }
 172
 173         if (s->vkbd != -1) {
 174                 FD_CLR(s->vkbd, &s->srv->rfdset);
 175                 close(s->vkbd);
 176
 177                 if (s->srv->maxfd == s->vkbd)
 178                         s->srv->maxfd --;
 179         }
 180
 181         free(s->keys1);
 182         free(s->keys2);
 183
 184         memset(s, 0, sizeof(*s));
 185         free(s);
 186 }
 187