/* * client.c */ /*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2006 Maksim Yevmenkin * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $Id: client.c,v 1.7 2006/09/07 21:06:53 max Exp $ * $FreeBSD$ */ #include #include #define L2CAP_SOCKET_CHECKED #include #include #include #include #include #include #include #include #include #include "bthid_config.h" #include "bthidd.h" static int32_t client_socket(bdaddr_p bdaddr, uint16_t psm); /* * Get next config entry and create outbound connection (if required) * * XXX Do only one device at a time. At least one of my devices (3COM * Bluetooth PCCARD) rejects Create_Connection command if another * Create_Connection command is still pending. Weird... */ static int32_t connect_in_progress = 0; int32_t client_rescan(bthid_server_p srv) { static hid_device_p d; bthid_session_p s; assert(srv != NULL); if (connect_in_progress) return (0); /* another connect is still pending */ d = get_next_hid_device(d); if (d == NULL) return (0); /* XXX should not happen? empty config? */ if ((s = session_by_bdaddr(srv, &d->bdaddr)) != NULL) return (0); /* session already active */ if (!d->new_device) { if (d->reconnect_initiate) return (0); /* device will initiate reconnect */ } syslog(LOG_NOTICE, "Opening outbound session for %s " \ "(new_device=%d, reconnect_initiate=%d)", bt_ntoa(&d->bdaddr, NULL), d->new_device, d->reconnect_initiate); if ((s = session_open(srv, d)) == NULL) { syslog(LOG_CRIT, "Could not create outbound session for %s", bt_ntoa(&d->bdaddr, NULL)); return (-1); } /* Open control channel */ s->ctrl = client_socket(&s->bdaddr, d->control_psm); if (s->ctrl < 0) { syslog(LOG_ERR, "Could not open control channel to %s. %s (%d)", bt_ntoa(&s->bdaddr, NULL), strerror(errno), errno); session_close(s); return (-1); } s->state = W4CTRL; FD_SET(s->ctrl, &srv->wfdset); if (s->ctrl > srv->maxfd) srv->maxfd = s->ctrl; connect_in_progress = 1; return (0); } /* * Process connect on the socket */ int32_t client_connect(bthid_server_p srv, int32_t fd) { bthid_session_p s; hid_device_p d; int32_t error; socklen_t len; assert(srv != NULL); assert(fd >= 0); s = session_by_fd(srv, fd); assert(s != NULL); d = get_hid_device(&s->bdaddr); assert(d != NULL); error = 0; len = sizeof(error); if (getsockopt(fd, SOL_SOCKET, SO_ERROR, &error, &len) < 0) { syslog(LOG_ERR, "Could not get socket error for %s. %s (%d)", bt_ntoa(&s->bdaddr, NULL), strerror(errno), errno); session_close(s); connect_in_progress = 0; return (-1); } if (error != 0) { syslog(LOG_ERR, "Could not connect to %s. %s (%d)", bt_ntoa(&s->bdaddr, NULL), strerror(error), error); session_close(s); connect_in_progress = 0; return (0); } switch (s->state) { case W4CTRL: /* Control channel is open */ assert(s->ctrl == fd); assert(s->intr == -1); /* Open interrupt channel */ s->intr = client_socket(&s->bdaddr, d->interrupt_psm); if (s->intr < 0) { syslog(LOG_ERR, "Could not open interrupt channel " \ "to %s. %s (%d)", bt_ntoa(&s->bdaddr, NULL), strerror(errno), errno); session_close(s); connect_in_progress = 0; return (-1); } s->state = W4INTR; FD_SET(s->intr, &srv->wfdset); if (s->intr > srv->maxfd) srv->maxfd = s->intr; d->new_device = 0; /* reset new device flag */ write_hids_file(); break; case W4INTR: /* Interrupt channel is open */ assert(s->ctrl != -1); assert(s->intr == fd); s->state = OPEN; connect_in_progress = 0; /* Create kbd/mouse after both channels are established */ if (session_run(s) < 0) { session_close(s); return (-1); } break; default: assert(0); break; } /* Move fd to from the write fd set into read fd set */ FD_CLR(fd, &srv->wfdset); FD_SET(fd, &srv->rfdset); return (0); } /* * Create bound non-blocking socket and initiate connect */ static int client_socket(bdaddr_p bdaddr, uint16_t psm) { struct sockaddr_l2cap l2addr; int32_t s, m; s = socket(PF_BLUETOOTH, SOCK_SEQPACKET, BLUETOOTH_PROTO_L2CAP); if (s < 0) return (-1); m = fcntl(s, F_GETFL); if (m < 0) { close(s); return (-1); } if (fcntl(s, F_SETFL, (m|O_NONBLOCK)) < 0) { close(s); return (-1); } l2addr.l2cap_len = sizeof(l2addr); l2addr.l2cap_family = AF_BLUETOOTH; memset(&l2addr.l2cap_bdaddr, 0, sizeof(l2addr.l2cap_bdaddr)); l2addr.l2cap_psm = 0; l2addr.l2cap_bdaddr_type = BDADDR_BREDR; l2addr.l2cap_cid = 0; if (bind(s, (struct sockaddr *) &l2addr, sizeof(l2addr)) < 0) { close(s); return (-1); } memcpy(&l2addr.l2cap_bdaddr, bdaddr, sizeof(l2addr.l2cap_bdaddr)); l2addr.l2cap_psm = htole16(psm); if (connect(s, (struct sockaddr *) &l2addr, sizeof(l2addr)) < 0 && errno != EINPROGRESS) { close(s); return (-1); } return (s); }