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 #define L2CAP_SOCKET_CHECKED
  37 #include <bluetooth.h>
  38 #include <errno.h>
  39 #include <fcntl.h>
  40 #include <stdio.h>
  41 #include <stdlib.h>
  42 #include <string.h>
  43 #include <syslog.h>
  44 #include <unistd.h>
  45 #include <usbhid.h>
  46 #include "bthid_config.h"
  47 #include "bthidd.h"
  48 #include "kbd.h"
  49
  50 /*
  51  * Create new session
  52  */
  53
  54 bthid_session_p
  55 session_open(bthid_server_p srv, hid_device_p const d)
  56 {
  57         bthid_session_p s;
  58
  59         assert(srv != NULL);
  60         assert(d != NULL);
  61
  62         if ((s = (bthid_session_p) malloc(sizeof(*s))) == NULL)
  63                 return (NULL);
  64
  65         s->srv = srv;
  66         memcpy(&s->bdaddr, &d->bdaddr, sizeof(s->bdaddr));
  67         s->ctrl = -1;
  68         s->intr = -1;
  69
  70         if (d->keyboard) {
  71                 /* Open /dev/vkbdctl */
  72                 s->vkbd = open("/dev/vkbdctl", O_RDWR);
  73                 if (s->vkbd < 0) {
  74                         syslog(LOG_ERR, "Could not open /dev/vkbdctl " \
  75                                 "for %s. %s (%d)", bt_ntoa(&s->bdaddr, NULL),
  76                                 strerror(errno), errno);
  77                         free(s);
  78                         return (NULL);
  79                 }
  80         } else
  81                 s->vkbd = -1;
  82
  83         s->state = CLOSED;
  84
  85         s->keys1 = bit_alloc(kbd_maxkey());
  86         if (s->keys1 == NULL) {
  87                 free(s);
  88                 return (NULL);
  89         }
  90
  91         s->keys2 = bit_alloc(kbd_maxkey());
  92         if (s->keys2 == NULL) {
  93                 free(s->keys1);
  94                 free(s);
  95                 return (NULL);
  96         }
  97
  98         LIST_INSERT_HEAD(&srv->sessions, s, next);
  99
 100         return (s);
 101 }
 102
 103 /*
 104  * Lookup session by bdaddr
 105  */
 106
 107 bthid_session_p
 108 session_by_bdaddr(bthid_server_p srv, bdaddr_p bdaddr)
 109 {
 110         bthid_session_p s;
 111
 112         assert(srv != NULL);
 113         assert(bdaddr != NULL);
 114
 115         LIST_FOREACH(s, &srv->sessions, next)
 116                 if (memcmp(&s->bdaddr, bdaddr, sizeof(s->bdaddr)) == 0)
 117                         break;
 118
 119         return (s);
 120 }
 121
 122 /*
 123  * Lookup session by fd
 124  */
 125
 126 bthid_session_p
 127 session_by_fd(bthid_server_p srv, int32_t fd)
 128 {
 129         bthid_session_p s;
 130
 131         assert(srv != NULL);
 132         assert(fd >= 0);
 133
 134         LIST_FOREACH(s, &srv->sessions, next)
 135                 if (s->ctrl == fd || s->intr == fd || s->vkbd == fd)
 136                         break;
 137
 138         return (s);
 139 }
 140
 141 /*
 142  * Close session
 143  */
 144
 145 void
 146 session_close(bthid_session_p s)
 147 {
 148         assert(s != NULL);
 149         assert(s->srv != NULL);
 150
 151         LIST_REMOVE(s, next);
 152
 153         if (s->intr != -1) {
 154                 FD_CLR(s->intr, &s->srv->rfdset);
 155                 FD_CLR(s->intr, &s->srv->wfdset);
 156                 close(s->intr);
 157
 158                 if (s->srv->maxfd == s->intr)
 159                         s->srv->maxfd --;
 160         }
 161
 162         if (s->ctrl != -1) {
 163                 FD_CLR(s->ctrl, &s->srv->rfdset);
 164                 FD_CLR(s->ctrl, &s->srv->wfdset);
 165                 close(s->ctrl);
 166
 167                 if (s->srv->maxfd == s->ctrl)
 168                         s->srv->maxfd --;
 169         }
 170
 171         if (s->vkbd != -1) {
 172                 FD_CLR(s->vkbd, &s->srv->rfdset);
 173                 close(s->vkbd);
 174
 175                 if (s->srv->maxfd == s->vkbd)
 176                         s->srv->maxfd --;
 177         }
 178
 179         free(s->keys1);
 180         free(s->keys2);
 181
 182         memset(s, 0, sizeof(*s));
 183         free(s);
 184 }
 185