usr.sbin/bluetooth/bthidd/session.c

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