1de7b4b805
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. No functional change intended.
297 lines
7.3 KiB
C
297 lines
7.3 KiB
C
/* $NetBSD: btpand.c,v 1.1 2008/08/17 13:20:57 plunky Exp $ */
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/*-
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* SPDX-License-Identifier: BSD-2-Clause-NetBSD
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*
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* Copyright (c) 2008 Iain Hibbert
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* $FreeBSD$ */
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#include <sys/cdefs.h>
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__COPYRIGHT("@(#) Copyright (c) 2008 Iain Hibbert. All rights reserved.");
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__RCSID("$NetBSD: btpand.c,v 1.1 2008/08/17 13:20:57 plunky Exp $");
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#include <sys/wait.h>
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#define L2CAP_SOCKET_CHECKED
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#include <bluetooth.h>
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#include <err.h>
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#include <fcntl.h>
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#include <paths.h>
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#include <sdp.h>
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#include <stdio.h>
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#include <signal.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "btpand.h"
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/* global variables */
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const char * control_path; /* -c <path> */
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const char * interface_name; /* -i <ifname> */
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const char * service_name; /* -s <service> */
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uint16_t service_class;
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bdaddr_t local_bdaddr; /* -d <addr> */
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bdaddr_t remote_bdaddr; /* -a <addr> */
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uint16_t l2cap_psm; /* -p <psm> */
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int l2cap_mode; /* -m <mode> */
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int server_limit; /* -n <limit> */
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static const struct {
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const char * name;
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uint16_t class;
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const char * desc;
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} services[] = {
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{ "PANU", SDP_SERVICE_CLASS_PANU, "Personal Area Networking User" },
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{ "NAP", SDP_SERVICE_CLASS_NAP, "Network Access Point" },
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{ "GN", SDP_SERVICE_CLASS_GN, "Group Network" },
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};
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static void main_exit(int);
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static void main_detach(void);
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static void usage(void);
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int
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main(int argc, char *argv[])
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{
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unsigned long ul;
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char * ep;
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int ch, status;
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while ((ch = getopt(argc, argv, "a:c:d:i:l:m:p:S:s:")) != -1) {
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switch (ch) {
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case 'a': /* remote address */
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if (!bt_aton(optarg, &remote_bdaddr)) {
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struct hostent *he;
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if ((he = bt_gethostbyname(optarg)) == NULL)
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errx(EXIT_FAILURE, "%s: %s",
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optarg, hstrerror(h_errno));
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bdaddr_copy(&remote_bdaddr,
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(bdaddr_t *)he->h_addr);
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}
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break;
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case 'c': /* control socket path */
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control_path = optarg;
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break;
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case 'd': /* local address */
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if (!bt_devaddr(optarg, &local_bdaddr)) {
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struct hostent *he;
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if ((he = bt_gethostbyname(optarg)) == NULL)
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errx(EXIT_FAILURE, "%s: %s",
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optarg, hstrerror(h_errno));
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bdaddr_copy(&local_bdaddr,
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(bdaddr_t *)he->h_addr);
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}
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break;
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case 'i': /* tap interface name */
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if (strchr(optarg, '/') == NULL) {
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asprintf(&ep, "/dev/%s", optarg);
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interface_name = ep;
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} else
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interface_name = optarg;
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break;
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case 'l': /* limit server sessions */
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ul = strtoul(optarg, &ep, 10);
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if (*optarg == '\0' || *ep != '\0' || ul == 0)
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errx(EXIT_FAILURE, "%s: invalid session limit",
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optarg);
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server_limit = ul;
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break;
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case 'm': /* link mode */
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warnx("Setting link mode is not yet supported");
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break;
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case 'p': /* protocol/service multiplexer */
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ul = strtoul(optarg, &ep, 0);
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if (*optarg == '\0' || *ep != '\0'
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|| ul > 0xffff || L2CAP_PSM_INVALID(ul))
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errx(EXIT_FAILURE, "%s: invalid PSM", optarg);
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l2cap_psm = ul;
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break;
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case 's': /* service */
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case 'S': /* service (no SDP) */
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for (ul = 0; strcasecmp(optarg, services[ul].name); ul++) {
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if (ul == __arraycount(services))
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errx(EXIT_FAILURE, "%s: unknown service", optarg);
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}
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if (ch == 's')
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service_name = services[ul].name;
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service_class = services[ul].class;
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break;
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default:
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usage();
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/* NOTREACHED */
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}
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}
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argc -= optind;
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argv += optind;
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/* validate options */
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if (bdaddr_any(&local_bdaddr) || service_class == 0)
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usage();
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if (!bdaddr_any(&remote_bdaddr) && (server_limit != 0 ||
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control_path != NULL || (service_name != NULL && l2cap_psm != 0)))
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usage();
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/* default options */
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if (interface_name == NULL)
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interface_name = "/dev/tap";
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if (l2cap_psm == 0)
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l2cap_psm = L2CAP_PSM_BNEP;
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if (bdaddr_any(&remote_bdaddr) && server_limit == 0) {
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if (service_class == SDP_SERVICE_CLASS_PANU)
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server_limit = 1;
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else
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server_limit = 7;
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}
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#ifdef L2CAP_LM_MASTER
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if (server_limit > 1 && service_class != SDP_SERVICE_CLASS_PANU)
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l2cap_mode |= L2CAP_LM_MASTER;
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#endif
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/*
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* fork() now so that the setup can be done in the child process
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* (as kqueue is not inherited) but block in the parent until the
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* setup is finished so we can return an error if necessary.
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*/
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switch(fork()) {
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case -1: /* bad */
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err(EXIT_FAILURE, "fork() failed");
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case 0: /* child */
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signal(SIGPIPE, SIG_IGN);
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openlog(getprogname(), LOG_NDELAY | LOG_PERROR | LOG_PID, LOG_DAEMON);
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channel_init();
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server_init();
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event_init();
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client_init();
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tap_init();
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main_detach();
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event_dispatch();
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break;
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default: /* parent */
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signal(SIGUSR1, main_exit);
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wait(&status);
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if (WIFEXITED(status))
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exit(WEXITSTATUS(status));
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break;
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}
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err(EXIT_FAILURE, "exiting");
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}
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static void
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main_exit(int s)
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{
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/* child is all grown up */
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_exit(EXIT_SUCCESS);
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}
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static void
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main_detach(void)
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{
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int fd;
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if (kill(getppid(), SIGUSR1) == -1)
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log_err("Could not signal main process: %m");
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if (setsid() == -1)
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log_err("setsid() failed");
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fd = open(_PATH_DEVNULL, O_RDWR, 0);
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if (fd == -1) {
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log_err("Could not open %s", _PATH_DEVNULL);
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} else {
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(void)dup2(fd, STDIN_FILENO);
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(void)dup2(fd, STDOUT_FILENO);
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(void)dup2(fd, STDERR_FILENO);
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close(fd);
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}
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}
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static void
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usage(void)
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{
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const char *p = getprogname();
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int n = strlen(p);
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fprintf(stderr,
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"usage: %s [-i ifname] [-m mode] -a address -d device\n"
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" %*s {-s service | -S service [-p psm]}\n"
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" %s [-c path] [-i ifname] [-l limit] [-m mode] [-p psm] -d device\n"
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" %*s {-s service | -S service}\n"
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"\n"
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"Where:\n"
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"\t-a address remote bluetooth device\n"
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"\t-c path SDP server socket\n"
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"\t-d device local bluetooth device\n"
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"\t-i ifname tap interface\n"
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"\t-l limit limit server sessions\n"
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"\t-m mode L2CAP link mode (NOT YET SUPPORTED)\n"
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"\t-p psm L2CAP PSM\n"
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"\t-S service service name (no SDP)\n"
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"\t-s service service name\n"
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"\n"
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"Known services:\n"
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"", p, n, "", p, n, "");
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for (n = 0; n < __arraycount(services); n++)
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fprintf(stderr, "\t%s\t%s\n", services[n].name, services[n].desc);
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exit(EXIT_FAILURE);
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}
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