sdptool.c

蓝牙的各种编程接口和各种按理介绍,还有一些例子和说明

		}
	}
	argc -= optind;
	argv += optind;

	if (argc < 1) {
		printf(add_help);
		return -1;
	}

	si.name = strdup(argv[0]);
	return add_service(0, &si);
}

/* Delete local service */
int del_service(bdaddr_t *bdaddr, void *arg) 
{
	uint32_t handle, range = 0x0000ffff;
	sdp_list_t *attr;
	sdp_session_t *sess;
	sdp_record_t *rec;

	if (!arg) { 
		printf("Record handle was not specified.\n");
		return -1;
	}
	sess = sdp_connect(&interface, BDADDR_LOCAL, SDP_RETRY_IF_BUSY);
	if (!sess) {
		printf("No local SDP server!\n");
		return -1;
	}
	handle = strtoul((char *)arg, 0, 16);
	attr = sdp_list_append(0, &range);
	rec = sdp_service_attr_req(sess, handle, SDP_ATTR_REQ_RANGE, attr);
	sdp_list_free(attr, 0);
	if (!rec) {
		printf("Service Record not found.\n");
		sdp_close(sess);
		return -1;
	}
	if (sdp_record_unregister(sess, rec)) {
		printf("Failed to unregister service record: %s\n", strerror(errno));
		sdp_close(sess);
		return -1;
	}
	printf("Service Record deleted.\n");
	sdp_close(sess);
	return 0;
}

static struct option del_options[] = {
	{"help",    0,0, 'h'},
	{0, 0, 0, 0}
};

static char *del_help = 
	"Usage:\n"
	"\tdel record_handle\n";

int cmd_del(int argc, char **argv)
{
	int opt;

	for_each_opt(opt, del_options, 0) {
		switch(opt) {
		default:
			printf(del_help);
			return -1;
		}
	}
	argc -= optind;
	argv += optind;

	if (argc < 1) {
		printf(del_help);
		return -1;
	}
	return del_service(0, argv[0]);
}

/*
 * Perform an inquiry and search/browse all peer found.
 */
static void inquiry(handler_t handler, void *arg)
{
	inquiry_info ii[20];
	uint8_t count = 0;
	int i;

	printf("Inquiring ...\n");
	if (sdp_general_inquiry(ii, 20, 8, &count) < 0) {
		printf("Inquiry failed\n");
		return;
	}
	for (i=0; i<count; i++)
		handler(&ii[i].bdaddr, arg);
}

/*
 * Search for a specific SDP service
 */
int do_search(bdaddr_t *bdaddr, struct search_context *context)
{
	sdp_list_t *attrid, *search, *seq, *next;
	uint32_t range = 0x0000ffff;
	char str[20];
	sdp_session_t *sess;

	if (!bdaddr) {
		inquiry(do_search, context);
		return 0;
	}
	sess = sdp_connect(&interface, bdaddr, SDP_RETRY_IF_BUSY);
	ba2str(bdaddr, str);
	if (!sess) {
		printf("Failed to connect to SDP server on %s: %s\n", str, strerror(errno));
		return -1;
	}
	if (context->svc)
		printf("Searching for %s on %s ...\n", context->svc, str);
	else
		printf("Browsing %s ...\n", str);

	attrid = sdp_list_append(0, &range);
	search = sdp_list_append(0, &context->group);
	if (sdp_service_search_attr_req(sess, search, SDP_ATTR_REQ_RANGE, attrid, &seq)) {
		printf("Service Search failed: %s\n", strerror(errno));
		sdp_close(sess);
		return -1;
	}
	sdp_list_free(attrid, 0);
	sdp_list_free(search, 0);

	for (; seq; seq = next) {
		sdp_record_t *rec = (sdp_record_t *) seq->data;
		struct search_context sub_context;

		if (context->tree) {
			/* Display full tree */
			sdp_printf_service_attr(rec);
		} else {
			/* Display user friendly form */
			print_service_attr(rec);
		}
		printf("\n");
		
		if (sdp_get_group_id(rec, &sub_context.group) != -1) {
			/* Set the subcontext for browsing the sub tree */
			memcpy(&sub_context, context, sizeof(struct search_context));
			/* Browse the next level down if not done */
			if (sub_context.group.value.uuid16 != context->group.value.uuid16)
				do_search(bdaddr, &sub_context);
		}
		next = seq->next;
		free(seq);
		sdp_record_free(rec);
	}
	sdp_close(sess);
	return 0;
}

static struct option browse_options[] = {
	{"help",    0,0, 'h'},
	{"tree",    0,0, 't'},
	{0, 0, 0, 0}
};

static char *browse_help = 
	"Usage:\n"
	"\tbrowse [--tree] [bdaddr]\n";

/*
 * Browse the full SDP database (i.e. list all services starting from the
 * root/top-level).
 */
int cmd_browse(int argc, char **argv)
{
	struct search_context context;
	int opt;

	/* Initialise context */
	memset(&context, '\0', sizeof(struct search_context));
	/* We want to browse the top-level/root */
	sdp_uuid16_create(&(context.group), PUBLIC_BROWSE_GROUP);

	for_each_opt(opt, browse_options, 0) {
		switch(opt) {
		case 't':
			context.tree = 1;
			break;
		default:
			printf(browse_help);
			return -1;
		}
	}
	argc -= optind;
	argv += optind;

	if (argc >= 1) {
		bdaddr_t bdaddr;
		estr2ba(argv[0], &bdaddr);
		return do_search(&bdaddr, &context);
	}
	return do_search(0, &context);
}

static struct option search_options[] = {
	{"help",    0,0, 'h'},
	{"bdaddr",  1,0, 'b'},
	{"tree",    0,0, 't'},
	{0, 0, 0, 0}
};

static char *search_help = 
	"Usage:\n"
	"\tsearch [--bdaddr bdaddr] [--tree] SERVICE\n"
	"SERVICE is a name (string) or UUID (0x1002)\n";

/*
 * Search for a specific SDP service
 *
 * Note : we should support multiple services on the command line :
 *	sdptool search 0x0100 0x000f 0x1002
 * (this would search a service supporting both L2CAP and BNEP directly in
 * the top level browse group)
 */
int cmd_search(int argc, char **argv)
{
	struct search_context context;
	uint16_t class = 0;
	bdaddr_t bdaddr;
	int has_addr = 0;
	int i;
	int opt;

	/* Initialise context */
	memset(&context, '\0', sizeof(struct search_context));

	for_each_opt(opt, search_options, 0) {
		switch(opt) {
		case 'b':
			estr2ba(optarg, &bdaddr);
			has_addr = 1;
			break;
		case 't':
			context.tree = 1;
			break;
		default:
			printf(search_help);
			return -1;
		}
	}
	argc -= optind;
	argv += optind;

	if (argc < 1) {
		printf(search_help);
		return -1;
	}
	/* Note : we need to find a way to support search combining
	 * multiple services - Jean II */
	context.svc = strdup(argv[0]);
	if (!strncasecmp(context.svc, "0x", 2)) {
		int num;
		/* This is a UUID16, just convert to int */
		sscanf(context.svc + 2, "%X", &num);
		class = num;
		printf("Class 0x%X\n", class);
	} else {
		/* Convert class name to an UUID */

		for (i=0; service[i].name; i++)
			if (strcasecmp(context.svc, service[i].name) == 0) {
				class = service[i].class;
				break;
			}
		if (!class) {
			printf("Unknown service %s\n", context.svc);
			return -1;
		}
	}	

	sdp_uuid16_create(&context.group, class);

	if (has_addr)
		return do_search(&bdaddr, &context);
	return do_search(0, &context);
}

/*
 * Show how to get a specific SDP record by its handle.
 * Not really useful to the user, just show how it can be done...
 * Jean II
 */
int get_service(bdaddr_t *bdaddr, struct search_context *context) 
{
	sdp_list_t *attrid;
	uint32_t range = 0x0000ffff;
	sdp_record_t *rec;
	sdp_session_t *session = sdp_connect(&interface, bdaddr, SDP_RETRY_IF_BUSY);

	if (!session) {
		char str[20];
		ba2str(bdaddr, str);
		printf("Failed to connect to SDP server on %s: %s\n", str, strerror(errno));
		return -1;
	}
	attrid = sdp_list_append(0, &range);
	rec = sdp_service_attr_req(session, context->handle, SDP_ATTR_REQ_RANGE, attrid);
	sdp_list_free(attrid, 0);
	sdp_close(session);
	if (!rec) {
		printf("Service get request failed.\n");
		return -1;
	}
	if (context->tree) {
		/* Display full tree */
		sdp_printf_service_attr(rec);
	} else {
		/* Display user friendly form */
		print_service_attr(rec);
	}
	printf("\n");
	sdp_record_free(rec);
	return 0;
}

static struct option get_options[] = {
	{"help",    0,0, 'h'},
	{"bdaddr",  1,0, 'b'},
	{"tree",    0,0, 't'},
	{0, 0, 0, 0}
};

static char *get_help = 
	"Usage:\n"
	"\tget [--tree] [--bdaddr bdaddr] record_handle\n";

/*
 * Get a specific SDP record on the local SDP server
 */
int cmd_get(int argc, char **argv)
{
	struct search_context context;
	bdaddr_t bdaddr;
	int has_addr = 0;
	int opt;

	/* Initialise context */
	memset(&context, '\0', sizeof(struct search_context));

	for_each_opt(opt, get_options, 0) {
		switch(opt) {
		case 'b':
			estr2ba(optarg, &bdaddr);
			has_addr = 1;
			break;
		case 't':
			context.tree = 1;
			break;
		default:
			printf(get_help);
			return -1;
		}
	}
	argc -= optind;
	argv += optind;

	if (argc < 1) {
		printf(get_help);
		return -1;
	}
	/* Convert command line parameters */
	context.handle = strtoul(argv[0], 0, 16);

	return get_service(has_addr? &bdaddr: BDADDR_LOCAL, &context);
}

struct {
	char *cmd;
	int (*func)(int argc, char **argv);
	char *doc;
} command[] = {
	{ "search",  cmd_search,      "Search for a service"          },
	{ "browse",  cmd_browse,      "Browse all available services" },
	{ "add",     cmd_add,         "Add local service"             },
	{ "del",     cmd_del,         "Delete local service"          },
	{ "get",     cmd_get,         "Get local service"             },
	{ "setattr", cmd_setattr,     "Set/Add attribute to a SDP record" },
	{ "setseq",  cmd_setseq,      "Set/Add attribute sequence to a SDP record" },
	{ 0, 0, 0}
};

static void usage(void)
{
	int i;

	printf("sdptool - SDP Tool v%s\n", VERSION);
	printf("Usage:\n"
		"\tsdptool [options] <command> [command parameters]\n");
	printf("Options:\n"
		"\t--help\t\tDisplay help\n"
		"\t--source\tSpecify source interface\n");

	printf("Commands:\n");
	for (i=0; command[i].cmd; i++)
		printf("\t%-4s\t\t%s\n", command[i].cmd, command[i].doc);

	printf("\nServices:\n\t");
	for (i=0; service[i].name; i++)
		printf("%s ", service[i].name);
	printf("\n");
}

static struct option main_options[] = {
	{"help",   0, 0, 'h'},
	{"source", 1, 0, 'S'},
	{0, 0, 0, 0}
};

int main(int argc, char **argv)
{
	int opt, i;

	bacpy(&interface, BDADDR_ANY);
	while ((opt=getopt_long(argc, argv, "+hS:", main_options, 0)) != -1) {
		switch(opt) {
		case 'S':
			str2ba(optarg, &interface);
			break;
		case 'h':
		default:
			usage();
			return -1;
		}
	}
	argc -= optind;
	argv += optind;
	optind = 0;

	if (argc < 1) {
		usage();
		return -1;
	}
	for (i=0; command[i].cmd; i++)
		if (strncmp(command[i].cmd, argv[0], 4) == 0)
			return command[i].func(argc, argv);
	return -1;
}