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/* $OpenBSD: bt.c,v 1.1 2008/11/24 23:34:41 uwe Exp $ */
/*
* Copyright (c) 2008 Uwe Stuehler <uwe@openbsd.org>
* Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
* Copyright (c) 2004 Alexander Guy <alexander.guy@andern.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <dev/bluetooth/btdev.h>
#include <bluetooth.h>
#include <errno.h>
#include <event.h>
#include <fcntl.h>
#include <paths.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <usbhid.h>
#include "btd.h"
void bt_sighdlr(int, short, void *);
struct event ev_sigint;
struct event ev_sigterm;
struct event ev_siginfo;
struct bufferevent *ev_priv;
void bt_priv_readcb(struct bufferevent *, void *);
void bt_priv_writecb(struct bufferevent *, void *);
void bt_priv_errorcb(struct bufferevent *, short, void *);
void
bt_sighdlr(int sig, short ev, void *arg)
{
switch (sig) {
case SIGINT:
case SIGTERM:
(void)event_loopexit(NULL);
break;
case SIGINFO:
/* report status */
break;
}
}
pid_t
bt_main(int pipe_prnt[2], struct btd *env, struct passwd *pw)
{
struct stat stb;
pid_t pid;
switch (pid = fork()) {
case -1:
fatal("cannot fork");
break;
case 0:
break;
default:
return pid;
}
setproctitle("bt engine");
event_init();
hid_init(NULL);
db_open(BTD_DB, &env->db);
if (hci_init(env))
fatalx("can't set up HCI listeners");
control_init(env);
if (stat(pw->pw_dir, &stb) == -1)
fatal("stat");
if (stb.st_uid != 0 || (stb.st_mode & (S_IWGRP|S_IWOTH)) != 0)
fatalx("bad privsep dir permissions");
if (chroot(pw->pw_dir) == -1)
fatal("chroot");
if (chdir("/") == -1)
fatal("chdir(\"/\")");
if (setgroups(1, &pw->pw_gid) ||
setresgid(pw->pw_gid, pw->pw_gid, pw->pw_gid) ||
setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid))
fatal("can't drop privileges");
close(pipe_prnt[0]);
if ((ev_priv = bufferevent_new(pipe_prnt[1], bt_priv_readcb,
bt_priv_writecb, bt_priv_errorcb, env)) == NULL)
fatalx("bufferevent_new ev_priv");
bufferevent_enable(ev_priv, EV_READ);
signal_set(&ev_sigint, SIGINT, bt_sighdlr, NULL);
signal_set(&ev_sigterm, SIGTERM, bt_sighdlr, NULL);
signal_set(&ev_siginfo, SIGINFO, bt_sighdlr, NULL);
signal_add(&ev_sigint, NULL);
signal_add(&ev_sigterm, NULL);
signal_add(&ev_siginfo, NULL);
signal(SIGPIPE, SIG_IGN);
signal(SIGHUP, SIG_IGN);
signal(SIGCHLD, SIG_DFL);
log_info("bt engine ready");
(void)event_dispatch();
log_info("bt engine exiting");
exit(0);
}
void
bt_priv_readcb(struct bufferevent *ev, void *arg)
{
log_debug(__func__);
}
void
bt_priv_writecb(struct bufferevent *ev, void *arg)
{
/* nothing to do */
log_debug(__func__);
}
void
bt_priv_errorcb(struct bufferevent *ev, short what, void *arg)
{
log_warnx("priv pipe error, what=%#x", what);
exit(0);
}
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