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btconfig.c revision 1.1
      1 /* $NetBSD: btconfig.c,v 1.1 2006/06/19 15:44:56 gdamore Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2006 Itronix Inc.
      5  * All rights reserved.
      6  *
      7  * Written by Iain Hibbert for Itronix Inc.
      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  * 3. The name of Itronix Inc. may not be used to endorse
     18  *    or promote products derived from this software without specific
     19  *    prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND
     22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     23  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     24  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY
     25  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     26  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     27  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     28  * ON ANY THEORY OF LIABILITY, WHETHER IN
     29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     31  * POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 
     34 #include <sys/cdefs.h>
     35 __COPYRIGHT("@(#) Copyright (c) 2006 Itronix, Inc.\n"
     36 	    "All rights reserved.\n");
     37 __RCSID("$NetBSD: btconfig.c,v 1.1 2006/06/19 15:44:56 gdamore Exp $");
     38 
     39 #include <sys/types.h>
     40 #include <sys/param.h>
     41 #include <sys/socket.h>
     42 #include <sys/ioctl.h>
     43 #include <sys/socket.h>
     44 
     45 #include <net/if.h>
     46 
     47 #include <stdio.h>
     48 #include <string.h>
     49 #include <ctype.h>
     50 #include <stdlib.h>
     51 #include <util.h>
     52 #include <unistd.h>
     53 #include <errno.h>
     54 #include <err.h>
     55 #include <bluetooth.h>
     56 
     57 int main(int, char *[]);
     58 void badarg(const char *);
     59 void badparam(const char *);
     60 void usage(void);
     61 int set_unit(unsigned long);
     62 void config_unit(void);
     63 void print_info(int);
     64 void print_stats(void);
     65 void print_class(const char *);
     66 void print_voice(int);
     67 void tag(const char *);
     68 void print_features(const char *, uint8_t *);
     69 void do_inquiry(void);
     70 void print_result(int, hci_inquiry_response *);
     71 
     72 void hci_req(uint16_t, uint8_t , void *, size_t, void *, size_t);
     73 #define save_value(opcode, cbuf, clen)	hci_req(opcode, 0, cbuf, clen, NULL, 0)
     74 #define load_value(opcode, rbuf, rlen)	hci_req(opcode, 0, NULL, 0, rbuf, rlen)
     75 #define hci_cmd(opcode, cbuf, clen)	hci_req(opcode, 0, cbuf, clen, NULL, 0)
     76 
     77 #define MAX_STR_SIZE	0xff
     78 
     79 /* print width */
     80 int width = 0;
     81 #define MAX_WIDTH	70
     82 
     83 /* global variables */
     84 int hci;
     85 struct btreq btr;
     86 
     87 /* command line flags */
     88 int verbose = 0;	/* more info */
     89 int lflag = 0;		/* list devices */
     90 int sflag = 0;		/* get/zero stats */
     91 
     92 /* device up/down (flag) */
     93 int opt_enable = 0;
     94 int opt_reset = 0;
     95 #define FLAGS_FMT	"\20"			\
     96 			"\001UP"		\
     97 			"\002RUNNING"		\
     98 			"\003XMIT_CMD"		\
     99 			"\004XMIT_ACL"		\
    100 			"\005XMIT_SCO"		\
    101 			"\006INIT_BDADDR"	\
    102 			"\007INIT_BUFFER_SIZE"	\
    103 			"\010INIT_FEATURES"
    104 
    105 /* authorisation (flag) */
    106 int opt_auth = 0;
    107 
    108 /* encryption (flag) */
    109 int opt_encrypt = 0;
    110 
    111 /* scan enable options (flags) */
    112 int opt_pscan = 0;
    113 int opt_iscan = 0;
    114 
    115 /* link policy options (flags) */
    116 int opt_switch = 0;
    117 int opt_hold = 0;
    118 int opt_sniff = 0;
    119 int opt_park = 0;
    120 
    121 /* class of device (hex value) */
    122 int opt_class = 0;
    123 uint32_t class;
    124 
    125 /* packet type mask (hex value) */
    126 int opt_ptype = 0;
    127 uint32_t ptype;
    128 #define PTYPE_FMT	"\20"		\
    129 			"\004DM1"	\
    130 			"\005DH1"	\
    131 			"\013DM3"	\
    132 			"\014DH3"	\
    133 			"\017DM5"	\
    134 			"\020DH5"
    135 
    136 /* unit name (string) */
    137 int opt_name = 0;
    138 char name[MAX_STR_SIZE];
    139 
    140 /* pin type */
    141 int opt_pin = 0;
    142 
    143 /* Inquiry */
    144 int opt_inquiry = 0;
    145 #define INQUIRY_LENGTH		10	/* about 12 seconds */
    146 #define INQUIRY_MAX_RESPONSES	10
    147 
    148 /* Voice Settings */
    149 int opt_voice = 0;
    150 uint32_t voice;
    151 
    152 struct parameter {
    153 	const char	*name;
    154 	enum { P_SET, P_CLR, P_STR, P_HEX } type;
    155 	int		*opt;
    156 	void		*val;
    157 } parameters[] = {
    158 	{ "up",		P_SET,	&opt_enable,	NULL	},
    159 	{ "enable",	P_SET,	&opt_enable,	NULL	},
    160 	{ "down",	P_CLR,	&opt_enable,	NULL	},
    161 	{ "disable",	P_CLR,	&opt_enable,	NULL	},
    162 	{ "name",	P_STR,	&opt_name,	name	},
    163 	{ "pscan",	P_SET,	&opt_pscan,	NULL	},
    164 	{ "-pscan",	P_CLR,	&opt_pscan,	NULL	},
    165 	{ "iscan",	P_SET,	&opt_iscan,	NULL	},
    166 	{ "-iscan",	P_CLR,	&opt_iscan,	NULL	},
    167 	{ "switch",	P_SET,	&opt_switch,	NULL	},
    168 	{ "-switch",	P_CLR,	&opt_switch,	NULL	},
    169 	{ "hold",	P_SET,	&opt_hold,	NULL	},
    170 	{ "-hold",	P_CLR,	&opt_hold,	NULL	},
    171 	{ "sniff",	P_SET,	&opt_sniff,	NULL	},
    172 	{ "-sniff",	P_CLR,	&opt_sniff,	NULL	},
    173 	{ "park",	P_SET,	&opt_park,	NULL	},
    174 	{ "-park",	P_CLR,	&opt_park,	NULL	},
    175 	{ "auth",	P_SET,	&opt_auth,	NULL	},
    176 	{ "-auth",	P_CLR,	&opt_auth,	NULL	},
    177 	{ "encrypt",	P_SET,	&opt_encrypt,	NULL	},
    178 	{ "-encrypt",	P_CLR,	&opt_encrypt,	NULL	},
    179 	{ "ptype",	P_HEX,	&opt_ptype,	&ptype	},
    180 	{ "class",	P_HEX,	&opt_class,	&class	},
    181 	{ "fixed",	P_SET,	&opt_pin,	NULL	},
    182 	{ "variable",	P_CLR,	&opt_pin,	NULL	},
    183 	{ "inq",	P_SET,	&opt_inquiry,	NULL	},
    184 	{ "inquiry",	P_SET,	&opt_inquiry,	NULL	},
    185 	{ "reset",	P_SET,	&opt_reset,	NULL	},
    186 	{ "voice",	P_HEX,	&opt_voice,	&voice	},
    187 	{ NULL }
    188 };
    189 
    190 int
    191 main(int ac, char *av[])
    192 {
    193 	int ch;
    194 	struct parameter *p;
    195 
    196 	while ((ch = getopt(ac, av, "hlsvz")) != -1) {
    197 		switch(ch) {
    198 		case 'l':
    199 			lflag = 1;
    200 			break;
    201 
    202 		case 's':
    203 			sflag = 1;
    204 			break;
    205 
    206 		case 'v':
    207 			verbose++;
    208 			break;
    209 
    210 		case 'z':
    211 			sflag = 2;
    212 			break;
    213 
    214 		case 'h':
    215 		default:
    216 			usage();
    217 		}
    218 	}
    219 	av += optind;
    220 	ac -= optind;
    221 
    222 	if (lflag && sflag)
    223 		usage();
    224 
    225 	hci = socket(PF_BLUETOOTH, SOCK_RAW, BTPROTO_HCI);
    226 	if (hci == -1)
    227 		err(EXIT_FAILURE, "socket");
    228 
    229 	if (ac == 0) {
    230 		verbose++;
    231 
    232 		memset(&btr, 0, sizeof(btr));
    233 		while (set_unit(SIOCNBTINFO) != -1) {
    234 			print_info(verbose);
    235 			print_stats();
    236 		}
    237 
    238 		tag(NULL);
    239 	} else {
    240 		strlcpy(btr.btr_name, *av, HCI_DEVNAME_SIZE);
    241 		av++, ac--;
    242 
    243 		if (set_unit(SIOCGBTINFO) < 0)
    244 			err(EXIT_FAILURE, "%s", btr.btr_name);
    245 
    246 		if (ac == 0)
    247 			verbose += 2;
    248 
    249 		while (ac > 0) {
    250 			for (p = parameters ; ; p++) {
    251 				if (p->name == NULL)
    252 					badparam(*av);
    253 
    254 				if (strcmp(*av, p->name) == 0)
    255 					break;
    256 			}
    257 
    258 			switch(p->type) {
    259 			case P_SET:
    260 				*(p->opt) = 1;
    261 				break;
    262 
    263 			case P_CLR:
    264 				*(p->opt) = -1;
    265 				break;
    266 
    267 			case P_STR:
    268 				if (--ac < 1) badarg(p->name);
    269 				strlcpy((char *)(p->val), *++av, MAX_STR_SIZE);
    270 				*(p->opt) = 1;
    271 				break;
    272 
    273 			case P_HEX:
    274 				if (--ac < 1) badarg(p->name);
    275 				*(uint32_t *)(p->val) = strtol(*++av, NULL, 16);
    276 				*(p->opt) = 1;
    277 				break;
    278 			}
    279 
    280 			av++, ac--;
    281 		}
    282 
    283 		config_unit();
    284 		print_info(verbose);
    285 		print_stats();
    286 		do_inquiry();
    287 	}
    288 
    289 	close(hci);
    290 	return EXIT_SUCCESS;
    291 }
    292 
    293 void
    294 badparam(const char *param)
    295 {
    296 
    297 	fprintf(stderr, "unknown parameter '%s'\n", param);
    298 	exit(EXIT_FAILURE);
    299 }
    300 
    301 void
    302 badarg(const char *param)
    303 {
    304 
    305 	fprintf(stderr, "parameter '%s' needs argument\n", param);
    306 	exit(EXIT_FAILURE);
    307 }
    308 
    309 void
    310 usage(void)
    311 {
    312 
    313 	fprintf(stderr, "usage:	%s [-svz] [device [parameters]]\n", getprogname());
    314 	fprintf(stderr, "	%s -l\n", getprogname());
    315 	exit(EXIT_FAILURE);
    316 }
    317 
    318 /*
    319  * pretty printing feature
    320  */
    321 void
    322 tag(const char *f)
    323 {
    324 
    325 	if (f == NULL) {
    326 		if (width > 0)
    327 			printf("\n");
    328 
    329 		width = 0;
    330 	} else {
    331 		width += printf("%*s%s",
    332 				(width == 0 ? (lflag ? 0 : 8) : 1),
    333 				"", f);
    334 
    335 		if (width > MAX_WIDTH) {
    336 			printf("\n");
    337 			width = 0;
    338 		}
    339 	}
    340 }
    341 
    342 /*
    343  * basic HCI cmd request function with argument return.
    344  *
    345  * Normally, this will return on COMMAND_STATUS or COMMAND_COMPLETE for the given
    346  * opcode, but if event is given then it will ignore COMMAND_STATUS (unless error)
    347  * and wait for the specified event.
    348  *
    349  * if rbuf/rlen is given, results will be copied into the result buffer for
    350  * COMMAND_COMPLETE/event responses.
    351  */
    352 void
    353 hci_req(uint16_t opcode, uint8_t event, void *cbuf, size_t clen, void *rbuf, size_t rlen)
    354 {
    355 	uint8_t msg[sizeof(hci_cmd_hdr_t) + HCI_CMD_PKT_SIZE];
    356 	hci_event_hdr_t *ep;
    357 	hci_cmd_hdr_t *cp;
    358 
    359 	cp = (hci_cmd_hdr_t *)msg;
    360 	cp->type = HCI_CMD_PKT;
    361 	cp->opcode = opcode = htole16(opcode);
    362 	cp->length = clen = MIN(clen, sizeof(msg) - sizeof(hci_cmd_hdr_t));
    363 
    364 	if (clen) memcpy((cp + 1), cbuf, clen);
    365 
    366 	if (send(hci, msg, sizeof(hci_cmd_hdr_t) + clen, 0) < 0)
    367 		err(EXIT_FAILURE, "HCI Send");
    368 
    369 	ep = (hci_event_hdr_t *)msg;
    370 	for(;;) {
    371 		if (recv(hci, msg, sizeof(msg), 0) < 0) {
    372 			if (errno == EAGAIN || errno == EINTR)
    373 				continue;
    374 
    375 			err(EXIT_FAILURE, "HCI Recv");
    376 		}
    377 
    378 		if (ep->event == HCI_EVENT_COMMAND_STATUS) {
    379 			hci_command_status_ep *cs;
    380 
    381 			cs = (hci_command_status_ep *)(ep + 1);
    382 			if (cs->opcode != opcode)
    383 				continue;
    384 
    385 			if (cs->status)
    386 				errx(EXIT_FAILURE,
    387 				    "HCI cmd (%4.4x) failed (status %d)",
    388 				    opcode, cs->status);
    389 
    390 			if (event == 0)
    391 				break;
    392 
    393 			continue;
    394 		}
    395 
    396 		if (ep->event == HCI_EVENT_COMMAND_COMPL) {
    397 			hci_command_compl_ep *cc;
    398 			uint8_t *ptr;
    399 
    400 			cc = (hci_command_compl_ep *)(ep + 1);
    401 			if (cc->opcode != opcode)
    402 				continue;
    403 
    404 			if (rbuf == NULL)
    405 				break;
    406 
    407 			ptr = (uint8_t *)(cc + 1);
    408 			if (*ptr)
    409 				errx(EXIT_FAILURE,
    410 				    "HCI cmd (%4.4x) failed (status %d)",
    411 				    opcode, *ptr);
    412 
    413 			memcpy(rbuf, ++ptr, rlen);
    414 			break;
    415 		}
    416 
    417 		if (ep->event == event) {
    418 			if (rbuf == NULL)
    419 				break;
    420 
    421 			memcpy(rbuf, (ep + 1), rlen);
    422 			break;
    423 		}
    424 	}
    425 }
    426 
    427 int
    428 set_unit(unsigned long cmd)
    429 {
    430 
    431 	if (ioctl(hci, cmd, &btr) == -1)
    432 		return -1;
    433 
    434 	if (btr.btr_flags & BTF_UP) {
    435 		struct sockaddr_bt sa;
    436 
    437 		sa.bt_len = sizeof(sa);
    438 		sa.bt_family = AF_BLUETOOTH;
    439 		bdaddr_copy(&sa.bt_bdaddr, &btr.btr_bdaddr);
    440 
    441 		if (bind(hci, (struct sockaddr *)&sa, sizeof(sa)) < 0)
    442 			err(EXIT_FAILURE, "bind");
    443 
    444 		if (connect(hci, (struct sockaddr *)&sa, sizeof(sa)) < 0)
    445 			err(EXIT_FAILURE, "connect");
    446 	}
    447 
    448 	return 0;
    449 }
    450 
    451 /*
    452  * apply configuration parameters to unit
    453  */
    454 void
    455 config_unit(void)
    456 {
    457 
    458 	if (opt_enable) {
    459 		if (opt_enable > 0)
    460 			btr.btr_flags |= BTF_UP;
    461 		else
    462 			btr.btr_flags &= ~BTF_UP;
    463 
    464 		if (ioctl(hci, SIOCSBTFLAGS, &btr) < 0)
    465 			err(EXIT_FAILURE, "SIOCSBTFLAGS");
    466 
    467 		if (set_unit(SIOCGBTINFO) < 0)
    468 			err(EXIT_FAILURE, "%s", btr.btr_name);
    469 	}
    470 
    471 	if (opt_reset) {
    472 		hci_cmd(HCI_CMD_RESET, NULL, 0);
    473 
    474 		btr.btr_flags |= BTF_INIT;
    475 		if (ioctl(hci, SIOCSBTFLAGS, &btr) < 0)
    476 			err(EXIT_FAILURE, "SIOCSBTFLAGS");
    477 
    478 		/*
    479 		 * although the reset command will automatically
    480 		 * carry out these commands, we do them manually
    481 		 * just so we can wait for completion.
    482 		 */
    483 		hci_cmd(HCI_CMD_READ_BDADDR, NULL, 0);
    484 		hci_cmd(HCI_CMD_READ_BUFFER_SIZE, NULL, 0);
    485 		hci_cmd(HCI_CMD_READ_LOCAL_FEATURES, NULL, 0);
    486 
    487 		if (set_unit(SIOCGBTINFO) < 0)
    488 			err(EXIT_FAILURE, "%s", btr.btr_name);
    489 	}
    490 
    491 	if (opt_switch || opt_hold || opt_sniff || opt_park) {
    492 		uint16_t val = btr.btr_link_policy;
    493 
    494 		if (opt_switch > 0) val |= HCI_LINK_POLICY_ENABLE_ROLE_SWITCH;
    495 		if (opt_switch < 0) val &= ~HCI_LINK_POLICY_ENABLE_ROLE_SWITCH;
    496 		if (opt_hold > 0)   val |= HCI_LINK_POLICY_ENABLE_HOLD_MODE;
    497 		if (opt_hold < 0)   val &= ~HCI_LINK_POLICY_ENABLE_HOLD_MODE;
    498 		if (opt_sniff > 0)  val |= HCI_LINK_POLICY_ENABLE_SNIFF_MODE;
    499 		if (opt_sniff < 0)  val &= ~HCI_LINK_POLICY_ENABLE_SNIFF_MODE;
    500 		if (opt_park > 0)   val |= HCI_LINK_POLICY_ENABLE_PARK_MODE;
    501 		if (opt_park < 0)   val &= ~HCI_LINK_POLICY_ENABLE_PARK_MODE;
    502 
    503 		btr.btr_link_policy = val;
    504 		if (ioctl(hci, SIOCSBTPOLICY, &btr) < 0)
    505 			err(EXIT_FAILURE, "SIOCSBTPOLICY");
    506 	}
    507 
    508 	if (opt_ptype) {
    509 		btr.btr_packet_type = ptype;
    510 		if (ioctl(hci, SIOCSBTPTYPE, &btr) < 0)
    511 			err(EXIT_FAILURE, "SIOCSBTPTYPE");
    512 	}
    513 
    514 	if (opt_pscan || opt_iscan) {
    515 		uint8_t val;
    516 
    517 		load_value(HCI_CMD_READ_SCAN_ENABLE, &val, sizeof(val));
    518 		if (opt_pscan > 0) val |= HCI_PAGE_SCAN_ENABLE;
    519 		if (opt_pscan < 0) val &= ~HCI_PAGE_SCAN_ENABLE;
    520 		if (opt_iscan > 0) val |= HCI_INQUIRY_SCAN_ENABLE;
    521 		if (opt_iscan < 0) val &= ~HCI_INQUIRY_SCAN_ENABLE;
    522 		save_value(HCI_CMD_WRITE_SCAN_ENABLE, &val, sizeof(val));
    523 	}
    524 
    525 	if (opt_auth) {
    526 		uint8_t val = (opt_auth > 0 ? 1 : 0);
    527 
    528 		save_value(HCI_CMD_WRITE_AUTH_ENABLE, &val, sizeof(val));
    529 	}
    530 
    531 	if (opt_encrypt) {
    532 		uint8_t val = (opt_encrypt > 0 ? 1 : 0);
    533 
    534 		save_value(HCI_CMD_WRITE_ENCRYPTION_MODE, &val, sizeof(val));
    535 	}
    536 
    537 	if (opt_name)
    538 		save_value(HCI_CMD_WRITE_LOCAL_NAME, name, HCI_UNIT_NAME_SIZE);
    539 
    540 	if (opt_class) {
    541 		uint8_t val[HCI_CLASS_SIZE];
    542 
    543 		val[0] = (class >> 0) & 0xff;
    544 		val[1] = (class >> 8) & 0xff;
    545 		val[2] = (class >> 16) & 0xff;
    546 
    547 		save_value(HCI_CMD_WRITE_UNIT_CLASS, val, HCI_CLASS_SIZE);
    548 	}
    549 
    550 	if (opt_pin) {
    551 		uint8_t val;
    552 
    553 		if (opt_pin > 0)	val = 1;
    554 		else			val = 0;
    555 
    556 		save_value(HCI_CMD_WRITE_PIN_TYPE, &val, sizeof(val));
    557 	}
    558 
    559 	if (opt_voice) {
    560 		uint16_t val;
    561 
    562 		val = htole16(voice & 0x03ff);
    563 		save_value(HCI_CMD_WRITE_VOICE_SETTING, &val, sizeof(val));
    564 	}
    565 }
    566 
    567 /*
    568  * Print info for Bluetooth Device with varying verbosity levels
    569  */
    570 void
    571 print_info(int level)
    572 {
    573 	uint8_t val, buf[MAX_STR_SIZE];
    574 
    575 	if (lflag) {
    576 		tag(btr.btr_name);
    577 		return;
    578 	}
    579 
    580 	if (level-- < 1)
    581 		return;
    582 
    583 	snprintb((char *)buf, MAX_STR_SIZE, FLAGS_FMT, btr.btr_flags);
    584 
    585 	printf("%s: bdaddr %s flags %s\n", btr.btr_name,
    586 		bt_ntoa(&btr.btr_bdaddr, NULL), buf);
    587 
    588 	if (level-- < 1)
    589 		return;
    590 
    591 	printf("\tnum_cmd = %d\n"
    592 	       "\tnum_acl = %d, acl_mtu = %d\n"
    593 	       "\tnum_sco = %d, sco_mtu = %d\n",
    594 	       btr.btr_num_cmd,
    595 	       btr.btr_num_acl, btr.btr_acl_mtu,
    596 	       btr.btr_num_sco, btr.btr_sco_mtu);
    597 
    598 	if (level-- < 1 || (btr.btr_flags & BTF_UP) == 0)
    599 		return;
    600 
    601 	load_value(HCI_CMD_READ_UNIT_CLASS, buf, HCI_CLASS_SIZE);
    602 	class = (buf[2] << 16) | (buf[1] << 8) | (buf[0]);
    603 	print_class("\t");
    604 
    605 	load_value(HCI_CMD_READ_LOCAL_NAME, buf, HCI_UNIT_NAME_SIZE);
    606 	printf("\tname: \"%s\"\n", buf);
    607 
    608 	load_value(HCI_CMD_READ_VOICE_SETTING, buf, sizeof(uint16_t));
    609 	voice = (buf[1] << 8) | buf[0];
    610 	print_voice(level);
    611 
    612 	load_value(HCI_CMD_READ_PIN_TYPE, &val, sizeof(val));
    613 	printf("\tpin: %s\n", val ? "fixed" : "variable");
    614 
    615 	width = printf("\toptions:");
    616 
    617 	load_value(HCI_CMD_READ_SCAN_ENABLE, &val, sizeof(val));
    618 	if (val & HCI_INQUIRY_SCAN_ENABLE)	tag("iscan");
    619 	else if (level > 0)			tag("-iscan");
    620 
    621 	if (val & HCI_PAGE_SCAN_ENABLE)		tag("pscan");
    622 	else if (level > 0)			tag("-pscan");
    623 
    624 	load_value(HCI_CMD_READ_AUTH_ENABLE, &val, sizeof(val));
    625 	if (val)				tag("auth");
    626 	else if (level > 0)			tag("-auth");
    627 
    628 	load_value(HCI_CMD_READ_ENCRYPTION_MODE, &val, sizeof(val));
    629 	if (val)				tag("encrypt");
    630 	else if (level > 0)			tag("-encrypt");
    631 
    632 	val = btr.btr_link_policy;
    633 	if (val & HCI_LINK_POLICY_ENABLE_ROLE_SWITCH)	tag("switch");
    634 	else if (level > 0)				tag("-switch");
    635 	if (val & HCI_LINK_POLICY_ENABLE_HOLD_MODE)	tag("hold");
    636 	else if (level > 0)				tag("-hold");
    637 	if (val & HCI_LINK_POLICY_ENABLE_SNIFF_MODE)	tag("sniff");
    638 	else if (level > 0)				tag("-sniff");
    639 	if (val & HCI_LINK_POLICY_ENABLE_PARK_MODE)	tag("park");
    640 	else if (level > 0)				tag("-park");
    641 
    642 	tag(NULL);
    643 
    644 	if (level-- < 1)
    645 		return;
    646 
    647 	snprintb((char *)buf, MAX_STR_SIZE, PTYPE_FMT, btr.btr_packet_type);
    648 	printf("\tptype: %s\n", buf);
    649 
    650 	if (level-- < 1)
    651 		return;
    652 
    653 	load_value(HCI_CMD_READ_LOCAL_FEATURES, buf, HCI_FEATURES_SIZE);
    654 	print_features("\tfeatures:", buf);
    655 }
    656 
    657 void
    658 print_stats(void)
    659 {
    660 
    661 	if (sflag == 0)
    662 		return;
    663 
    664 	if (sflag == 1) {
    665 		if (ioctl(hci, SIOCGBTSTATS, &btr) < 0)
    666 			err(EXIT_FAILURE, "SIOCGBTSTATS");
    667 	} else  {
    668 		if (ioctl(hci, SIOCZBTSTATS, &btr) < 0)
    669 			err(EXIT_FAILURE, "SIOCZBTSTATS");
    670 	}
    671 
    672 	printf( "\tTotal bytes sent %d, recieved %d\n"
    673 		"\tCommands sent %d, Events received %d\n"
    674 		"\tACL data packets sent %d, received %d\n"
    675 		"\tSCO data packets sent %d, received %d\n"
    676 		"\tInput errors %d, Output errors %d\n",
    677 		btr.btr_stats.byte_tx, btr.btr_stats.byte_rx,
    678 		btr.btr_stats.cmd_tx, btr.btr_stats.evt_rx,
    679 		btr.btr_stats.acl_tx, btr.btr_stats.acl_rx,
    680 		btr.btr_stats.sco_tx, btr.btr_stats.sco_rx,
    681 		btr.btr_stats.err_rx, btr.btr_stats.err_tx);
    682 }
    683 
    684 void
    685 print_features(const char *str, uint8_t *f)
    686 {
    687 
    688 	width = printf("%s", str);
    689 
    690 	/* ------------------- byte 0 --------------------*/
    691 	if (*f & HCI_LMP_3SLOT)		    tag("<3 slot>");
    692 	if (*f & HCI_LMP_5SLOT)		    tag("<5 slot>");
    693 	if (*f & HCI_LMP_ENCRYPTION)	    tag("<encryption>");
    694 	if (*f & HCI_LMP_SLOT_OFFSET)	    tag("<slot offset>");
    695 	if (*f & HCI_LMP_TIMIACCURACY)	    tag("<timing accuracy>");
    696 	if (*f & HCI_LMP_ROLE_SWITCH)	    tag("<role switch>");
    697 	if (*f & HCI_LMP_HOLD_MODE)	    tag("<hold mode>");
    698 	if (*f & HCI_LMP_SNIFF_MODE)	    tag("<sniff mode>");
    699 	f++;
    700 
    701 	/* ------------------- byte 1 --------------------*/
    702 	if (*f & HCI_LMP_PARK_MODE)	    tag("<park mode>");
    703 	if (*f & HCI_LMP_RSSI)		    tag("<RSSI>");
    704 	if (*f & HCI_LMP_CHANNEL_QUALITY)   tag("<channel quality>");
    705 	if (*f & HCI_LMP_SCO_LINK)	    tag("<SCO link>");
    706 	if (*f & HCI_LMP_HV2_PKT)	    tag("<HV2>");
    707 	if (*f & HCI_LMP_HV3_PKT)	    tag("<HV3>");
    708 	if (*f & HCI_LMP_ULAW_LOG)	    tag("<u-Law log>");
    709 	if (*f & HCI_LMP_ALAW_LOG)	    tag("<A-Law log>");
    710 	f++;
    711 
    712 	/* ------------------- byte 1 --------------------*/
    713 	if (*f & HCI_LMP_CVSD)		    tag("<CVSD data>");
    714 	if (*f & HCI_LMP_PAGISCHEME)	    tag("<paging parameter>");
    715 	if (*f & HCI_LMP_POWER_CONTROL)	    tag("<power control>");
    716 	if (*f & HCI_LMP_TRANSPARENT_SCO)   tag("<transparent SCO>");
    717 	if (*f & HCI_LMP_FLOW_CONTROL_LAG0) tag("<flow control lag 0>");
    718 	if (*f & HCI_LMP_FLOW_CONTROL_LAG1) tag("<flow control lag 1>");
    719 	if (*f & HCI_LMP_FLOW_CONTROL_LAG2) tag("<flow control lag 2>");
    720 	if (*f & HCI_LMP_BC_ENCRYPTION)	    tag("<broadcast encryption>");
    721 	f++;
    722 
    723 	/* ------------------- byte 3 --------------------*/
    724 	if (*f & HCI_LMP_EDR_ACL_2MBPS)	    tag("<EDR ACL 2Mbps>");
    725 	if (*f & HCI_LMP_EDR_ACL_3MBPS)	    tag("<EDR ACL 3Mbps>");
    726 	if (*f & HCI_LMP_ENHANCED_ISCAN)    tag("<enhanced inquiry scan>");
    727 	if (*f & HCI_LMP_INTERLACED_ISCAN)  tag("<interlaced inquiry scan>");
    728 	if (*f & HCI_LMP_INTERLACED_PSCAN)  tag("<interlaced page scan>");
    729 	if (*f & HCI_LMP_RSSI_INQUIRY)	    tag("<RSSI with inquiry result>");
    730 	if (*f & HCI_LMP_EV3_PKT)	    tag("<EV3 packets>");
    731 	f++;
    732 
    733 	/* ------------------- byte 4 --------------------*/
    734 	if (*f & HCI_LMP_EV4_PKT)	    tag("<EV4 packets>");
    735 	if (*f & HCI_LMP_EV5_PKT)	    tag("<EV5 packets>");
    736 	if (*f & HCI_LMP_AFH_CAPABLE_SLAVE) tag("<AFH capable slave>");
    737 	if (*f & HCI_LMP_AFH_CLASS_SLAVE)   tag("<AFH class slave>");
    738 	if (*f & HCI_LMP_3SLOT_EDR_ACL)	    tag("<3 slot EDR ACL>");
    739 	f++;
    740 
    741 	/* ------------------- byte 5 --------------------*/
    742 	if (*f & HCI_LMP_5SLOT_EDR_ACL)	    tag("<5 slot EDR ACL>");
    743 	if (*f & HCI_LMP_AFH_CAPABLE_MASTER)tag("<AFH capable master>");
    744 	if (*f & HCI_LMP_AFH_CLASS_MASTER)  tag("<AFH class master>");
    745 	if (*f & HCI_LMP_EDR_eSCO_2MBPS)    tag("<EDR eSCO 2Mbps>");
    746 	if (*f & HCI_LMP_EDR_eSCO_3MBPS)    tag("<EDR eSCO 3Mbps>");
    747 	if (*f & HCI_LMP_3SLOT_EDR_eSCO)    tag("<3 slot EDR eSCO>");
    748 	f++;
    749 
    750 	/* ------------------- byte 6 --------------------*/
    751 	f++;
    752 
    753 	/* ------------------- byte 7 --------------------*/
    754 	if (*f & HCI_LMP_EXTENDED_FEATURES) tag("<extended features>");
    755 
    756 	tag(NULL);
    757 }
    758 
    759 void
    760 print_class(const char *str)
    761 {
    762 	int major, minor;
    763 
    764 	major = (class & 0x1f00) >> 8;
    765 	minor = (class & 0x00fc) >> 2;
    766 
    767 	width = printf("%sclass: [0x%6.6x]", str, class);
    768 
    769 	switch (major) {
    770 	case 1:	/* Computer */
    771 		switch (minor) {
    772 		case 1: tag("Desktop");				break;
    773 		case 2: tag("Server");				break;
    774 		case 3: tag("Laptop");				break;
    775 		case 4: tag("Handheld");			break;
    776 		case 5: tag("Palm Sized");			break;
    777 		case 6: tag("Wearable");			break;
    778 		}
    779 		tag("Computer");
    780 		break;
    781 
    782 	case 2:	/* Phone */
    783 		switch (minor) {
    784 		case 1: tag("Cellular Phone");			break;
    785 		case 2: tag("Cordless Phone");			break;
    786 		case 3: tag("Smart Phone");			break;
    787 		case 4: tag("Wired Modem/Phone Gateway");	break;
    788 		case 5: tag("Common ISDN");			break;
    789 		default:tag("Phone");				break;
    790 		}
    791 		break;
    792 
    793 	case 3:	/* LAN */
    794 		tag("LAN");
    795 		switch ((minor & 0x38) >> 3) {
    796 		case 0: tag("[Fully available]");		break;
    797 		case 1: tag("[1-17% utilised]");		break;
    798 		case 2: tag("[17-33% utilised]");		break;
    799 		case 3: tag("[33-50% utilised]");		break;
    800 		case 4: tag("[50-67% utilised]");		break;
    801 		case 5: tag("[67-83% utilised]");		break;
    802 		case 6: tag("[83-99% utilised]");		break;
    803 		case 7: tag("[No service available]");		break;
    804 		}
    805 		break;
    806 
    807 	case 4:	/* Audio/Visual */
    808 		switch (minor) {
    809 		case 1: tag("Wearable Headset");		break;
    810 		case 2: tag("Hands-free Audio");		break;
    811 		case 4: tag("Microphone");			break;
    812 		case 5: tag("Loudspeaker");			break;
    813 		case 6: tag("Headphones");			break;
    814 		case 7: tag("Portable Audio");			break;
    815 		case 8: tag("Car Audio");			break;
    816 		case 9: tag("Set-top Box");			break;
    817 		case 10: tag("HiFi Audio");			break;
    818 		case 11: tag("VCR");				break;
    819 		case 12: tag("Video Camera");			break;
    820 		case 13: tag("Camcorder");			break;
    821 		case 14: tag("Video Monitor");			break;
    822 		case 15: tag("Video Display and Loudspeaker");	break;
    823 		case 16: tag("Video Conferencing");		break;
    824 		case 18: tag("A/V [Gaming/Toy]");		break;
    825 		default: tag("Audio/Visual");			break;
    826 		}
    827 		break;
    828 
    829 	case 5:	/* Peripheral */
    830 		switch (minor & 0x0f) {
    831 		case 1: tag("Joystick");			break;
    832 		case 2: tag("Gamepad");				break;
    833 		case 3: tag("Remote Control");			break;
    834 		case 4: tag("Sensing Device");			break;
    835 		case 5: tag("Digitiser Tablet");		break;
    836 		case 6: tag("Card Reader");			break;
    837 		default: tag("Peripheral");			break;
    838 		}
    839 
    840 		if (minor & 0x10) tag("Keyboard");
    841 		if (minor & 0x20) tag("Mouse");
    842 		break;
    843 
    844 	case 6:	/* Imaging */
    845 		if (minor & 0x20) tag("Printer");
    846 		if (minor & 0x10) tag("Scanner");
    847 		if (minor & 0x08) tag("Camera");
    848 		if (minor & 0x04) tag("Display");
    849 		if ((minor & 0x3c) == 0) tag("Imaging");
    850 		break;
    851 
    852 	case 7:	/* Wearable */
    853 		switch (minor) {
    854 		case 1: tag("Wrist Watch");			break;
    855 		case 2: tag("Pager");				break;
    856 		case 3: tag("Jacket");				break;
    857 		case 4: tag("Helmet");				break;
    858 		case 5: tag("Glasses");				break;
    859 		default: tag("Wearable");			break;
    860 		}
    861 		break;
    862 
    863 	case 8:	/* Toy */
    864 		switch (minor) {
    865 		case 1: tag("Robot");				break;
    866 		case 2: tag("Vehicle");				break;
    867 		case 3: tag("Doll / Action Figure");		break;
    868 		case 4: tag("Controller");			break;
    869 		case 5: tag("Game");				break;
    870 		default: tag("Toy");				break;
    871 		}
    872 		break;
    873 
    874 	default:
    875 		break;
    876 	}
    877 
    878 	if (class & 0x002000)	tag("<Limited Discoverable>");
    879 	if (class & 0x010000)	tag("<Positioning>");
    880 	if (class & 0x020000)	tag("<Networking>");
    881 	if (class & 0x040000)	tag("<Rendering>");
    882 	if (class & 0x080000)	tag("<Capturing>");
    883 	if (class & 0x100000)	tag("<Object Transfer>");
    884 	if (class & 0x200000)	tag("<Audio>");
    885 	if (class & 0x400000)	tag("<Telephony>");
    886 	if (class & 0x800000)	tag("<Information>");
    887 	tag(NULL);
    888 }
    889 
    890 void
    891 print_voice(int level)
    892 {
    893 	printf("\tvoice: [0x%4.4x]\n", voice);
    894 
    895 	if (level == 0)
    896 		return;
    897 
    898 	printf("\t\tInput Coding: ");
    899 	switch ((voice & 0x0300) >> 8) {
    900 	case 0x00:	printf("Linear PCM [%d-bit, pos %d]",
    901 			(voice & 0x0020 ? 16 : 8),
    902 			(voice & 0x001c) >> 2);		break;
    903 	case 0x01:	printf("u-Law");		break;
    904 	case 0x02:	printf("A-Law");		break;
    905 	case 0x03:	printf("unknown");		break;
    906 	}
    907 
    908 	switch ((voice & 0x00c0) >> 6) {
    909 	case 0x00:	printf(", 1's complement");	break;
    910 	case 0x01:	printf(", 2's complement");	break;
    911 	case 0x02:	printf(", sign magnitude");	break;
    912 	case 0x03:	printf(", unsigned");		break;
    913 	}
    914 
    915 	printf("\n\t\tAir Coding: ");
    916 	switch (voice & 0x0003) {
    917 	case 0x00:	printf("CVSD");			break;
    918 	case 0x01:	printf("u-Law");		break;
    919 	case 0x02:	printf("A-Law");		break;
    920 	case 0x03:	printf("Transparent");		break;
    921 	}
    922 
    923 	printf("\n");
    924 }
    925 
    926 void
    927 print_result(int num, hci_inquiry_response *r)
    928 {
    929 	hci_remote_name_req_cp ncp;
    930 	hci_remote_name_req_compl_ep nep;
    931 #if 0
    932 	hci_read_remote_features_cp fcp;
    933 	hci_read_remote_features_compl_ep fep;
    934 #endif
    935 	struct hostent *hp;
    936 
    937 	printf("%3d: bdaddr %s",
    938 			num,
    939 			bt_ntoa(&r->bdaddr, NULL));
    940 
    941 	hp = bt_gethostbyaddr((const char *)&r->bdaddr, sizeof(bdaddr_t), AF_BLUETOOTH);
    942 	if (hp != NULL)
    943 		printf(" (%s)", hp->h_name);
    944 
    945 	printf("\n");
    946 
    947 	bdaddr_copy(&ncp.bdaddr, &r->bdaddr);
    948 	ncp.page_scan_rep_mode = r->page_scan_rep_mode;
    949 	ncp.page_scan_mode = r->page_scan_mode;
    950 	ncp.clock_offset = r->clock_offset;
    951 
    952 	hci_req(HCI_CMD_REMOTE_NAME_REQ,
    953 		HCI_EVENT_REMOTE_NAME_REQ_COMPL,
    954 		&ncp, sizeof(ncp),
    955 		&nep, sizeof(nep));
    956 
    957 	printf("   : name \"%s\"\n", nep.name);
    958 
    959 	class = (r->uclass[2] << 16) | (r->uclass[1] << 8) | (r->uclass[0]);
    960 	print_class("   : ");
    961 
    962 #if 0
    963 	hci_req(HCI_CMD_READ_REMOTE_FEATURES,
    964 		HCI_EVENT_READ_REMOTE_FEATURES_COMPL,
    965 		&fcp, sizeof(fcp),
    966 		&fep, sizeof(fep));
    967 
    968 	print_features("   : features", fep.features);
    969 #endif
    970 
    971 	printf("   : page scan rep mode 0x%02x\n", r->page_scan_rep_mode);
    972 	printf("   : page scan period mode 0x%02x\n", r->page_scan_period_mode);
    973 	printf("   : page scan mode 0x%02x\n", r->page_scan_mode);
    974 	printf("   : clock offset %d\n", le16toh(r->clock_offset));
    975 
    976 	printf("\n");
    977 }
    978 
    979 void
    980 do_inquiry(void)
    981 {
    982 	uint8_t buf[HCI_EVENT_PKT_SIZE];
    983 	hci_inquiry_response result[INQUIRY_MAX_RESPONSES];
    984 	hci_inquiry_cp inq;
    985 	struct hci_filter f;
    986 	hci_event_hdr_t *hh;
    987 	hci_inquiry_result_ep *ep;
    988 	hci_inquiry_response *ir;
    989 	int i, j, num;
    990 
    991 	if (opt_inquiry == 0)
    992 		return;
    993 
    994 	printf("Device Discovery from device: %s ...", btr.btr_name);
    995 	fflush(stdout);
    996 
    997 	memset(&f, 0, sizeof(f));
    998 	hci_filter_set(HCI_EVENT_COMMAND_STATUS, &f);
    999 	hci_filter_set(HCI_EVENT_COMMAND_COMPL, &f);
   1000 	hci_filter_set(HCI_EVENT_INQUIRY_RESULT, &f);
   1001 	hci_filter_set(HCI_EVENT_INQUIRY_COMPL, &f);
   1002 	hci_filter_set(HCI_EVENT_REMOTE_NAME_REQ_COMPL, &f);
   1003 	hci_filter_set(HCI_EVENT_READ_REMOTE_FEATURES_COMPL, &f);
   1004 	if (setsockopt(hci, BTPROTO_HCI, SO_HCI_EVT_FILTER, &f, sizeof(f)) < 0)
   1005 		err(EXIT_FAILURE, "Can't set event filter");
   1006 
   1007 	/* General Inquiry LAP is 0x9e8b33 */
   1008 	inq.lap[0] = 0x33;
   1009 	inq.lap[1] = 0x8b;
   1010 	inq.lap[2] = 0x9e;
   1011 	inq.inquiry_length = INQUIRY_LENGTH;
   1012 	inq.num_responses = INQUIRY_MAX_RESPONSES;
   1013 
   1014 	hci_cmd(HCI_CMD_INQUIRY, &inq, sizeof(inq));
   1015 
   1016 	num = 0;
   1017 	hh = (hci_event_hdr_t *)buf;
   1018 	ep = (hci_inquiry_result_ep *)(hh + 1);
   1019 	ir = (hci_inquiry_response *)(ep + 1);
   1020 
   1021 	for (;;) {
   1022 		if (recv(hci, buf, sizeof(buf), 0) <= 0)
   1023 			err(EXIT_FAILURE, "recv");
   1024 
   1025 		if (hh->event == HCI_EVENT_INQUIRY_COMPL)
   1026 			break;
   1027 
   1028 		if (hh->event == HCI_EVENT_INQUIRY_RESULT) {
   1029 			for (i = 0 ; i < ep->num_responses ; i++) {
   1030 				if (num == INQUIRY_MAX_RESPONSES)
   1031 					break;
   1032 
   1033 				/* some devices keep responding, ignore dupes */
   1034 				for (j = 0 ; j < num ; j++)
   1035 					if (bdaddr_same(&result[j].bdaddr, &ir[i].bdaddr))
   1036 						break;
   1037 
   1038 				if (j < num)
   1039 					continue;
   1040 
   1041 				memcpy(&result[num++], &ir[i], sizeof(hci_inquiry_response));
   1042 				printf(".");
   1043 				fflush(stdout);
   1044 
   1045 			}
   1046 			continue;
   1047 		}
   1048 	}
   1049 
   1050 	printf(" %d response%s\n", num, (num == 1 ? "" : "s"));
   1051 
   1052 	for (i = 0 ; i < num ; i++)
   1053 		print_result(i + 1, &result[i]);
   1054 }
   1055