freebsd-skq/usr.sbin/bluetooth/l2control/l2control.c
emax 79542a929d Improve the man page and l2control's usage() a bit.
Submitted by:	arundel
MFC after:	1 week
2011-04-19 16:21:57 +00:00

221 lines
5.5 KiB
C

/*
* l2control.c
*
* Copyright (c) 2001-2002 Maksim Yevmenkin <m_evmenkin@yahoo.com>
* 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: l2control.c,v 1.6 2003/09/05 00:38:25 max Exp $
* $FreeBSD$
*/
#include <assert.h>
#include <bluetooth.h>
#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "l2control.h"
/* Prototypes */
static int do_l2cap_command (bdaddr_p, int, char **);
static struct l2cap_command * find_l2cap_command (char const *,
struct l2cap_command *);
static void print_l2cap_command (struct l2cap_command *);
static void usage (void);
/* Main */
int numeric_bdaddr = 0;
int
main(int argc, char *argv[])
{
int n;
bdaddr_t bdaddr;
memset(&bdaddr, 0, sizeof(bdaddr));
/* Process command line arguments */
while ((n = getopt(argc, argv, "a:nh")) != -1) {
switch (n) {
case 'a':
if (!bt_aton(optarg, &bdaddr)) {
struct hostent *he = NULL;
if ((he = bt_gethostbyname(optarg)) == NULL)
errx(1, "%s: %s", optarg, hstrerror(h_errno));
memcpy(&bdaddr, he->h_addr, sizeof(bdaddr));
}
break;
case 'n':
numeric_bdaddr = 1;
break;
case 'h':
default:
usage();
break;
}
}
argc -= optind;
argv += optind;
if (*argv == NULL)
usage();
return (do_l2cap_command(&bdaddr, argc, argv));
} /* main */
/* Execute commands */
static int
do_l2cap_command(bdaddr_p bdaddr, int argc, char **argv)
{
char *cmd = argv[0];
struct l2cap_command *c = NULL;
struct sockaddr_l2cap sa;
int s, e, help;
help = 0;
if (strcasecmp(cmd, "help") == 0) {
argc --;
argv ++;
if (argc <= 0) {
fprintf(stdout, "Supported commands:\n");
print_l2cap_command(l2cap_commands);
fprintf(stdout, "\nFor more information use " \
"'help command'\n");
return (OK);
}
help = 1;
cmd = argv[0];
}
c = find_l2cap_command(cmd, l2cap_commands);
if (c == NULL) {
fprintf(stdout, "Unknown command: \"%s\"\n", cmd);
return (ERROR);
}
if (!help) {
if (memcmp(bdaddr, NG_HCI_BDADDR_ANY, sizeof(*bdaddr)) == 0)
usage();
memset(&sa, 0, sizeof(sa));
sa.l2cap_len = sizeof(sa);
sa.l2cap_family = AF_BLUETOOTH;
memcpy(&sa.l2cap_bdaddr, bdaddr, sizeof(sa.l2cap_bdaddr));
s = socket(PF_BLUETOOTH, SOCK_RAW, BLUETOOTH_PROTO_L2CAP);
if (s < 0)
err(1, "Could not create socket");
if (bind(s, (struct sockaddr *) &sa, sizeof(sa)) < 0)
err(2,
"Could not bind socket, bdaddr=%s", bt_ntoa(&sa.l2cap_bdaddr, NULL));
e = 0x0ffff;
if (setsockopt(s, SOL_SOCKET, SO_RCVBUF, &e, sizeof(e)) < 0)
err(3, "Coult not setsockopt(RCVBUF, %d)", e);
e = (c->handler)(s, -- argc, ++ argv);
close(s);
} else
e = USAGE;
switch (e) {
case OK:
case FAILED:
break;
case ERROR:
fprintf(stdout, "Could not execute command \"%s\". %s\n",
cmd, strerror(errno));
break;
case USAGE:
fprintf(stdout, "Usage: %s\n%s\n", c->command, c->description);
break;
default: assert(0); break;
}
return (e);
} /* do_l2cap_command */
/* Try to find command in specified category */
static struct l2cap_command *
find_l2cap_command(char const *command, struct l2cap_command *category)
{
struct l2cap_command *c = NULL;
for (c = category; c->command != NULL; c++) {
char *c_end = strchr(c->command, ' ');
if (c_end != NULL) {
int len = c_end - c->command;
if (strncasecmp(command, c->command, len) == 0)
return (c);
} else if (strcasecmp(command, c->command) == 0)
return (c);
}
return (NULL);
} /* find_l2cap_command */
/* Print commands in specified category */
static void
print_l2cap_command(struct l2cap_command *category)
{
struct l2cap_command *c = NULL;
for (c = category; c->command != NULL; c++)
fprintf(stdout, "\t%s\n", c->command);
} /* print_l2cap_command */
/* Usage */
static void
usage(void)
{
fprintf(stderr, "Usage: l2control [-hn] -a local cmd [params ..]\n");
fprintf(stderr, "Where:\n");
fprintf(stderr, " -a local Specify local device to connect to\n");
fprintf(stderr, " -h Display this message\n");
fprintf(stderr, " -n Show addresses as numbers\n");
fprintf(stderr, " cmd Supported command " \
"(see l2control help)\n");
fprintf(stderr, " params Optional command parameters\n");
exit(255);
} /* usage */