manager.c

BlueZ源码

/*
 *
 *  BlueZ - Bluetooth protocol stack for Linux
 *
 *  Copyright (C) 2006-2007  Nokia Corporation
 *  Copyright (C) 2004-2008  Marcel Holtmann <[e-mail]>
 *
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <errno.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdint.h>
#include <sys/stat.h>
#include <dirent.h>
#include <ctype.h>
#include <signal.h>

#include <bluetooth/bluetooth.h>
#include <bluetooth/hci.h>
#include <bluetooth/hci_lib.h>
#include <bluetooth/rfcomm.h>
#include <bluetooth/sdp.h>
#include <bluetooth/sdp_lib.h>

#include <glib.h>
#include <dbus/dbus.h>
#include <gdbus.h>

#include "glib-helper.h"
#include "../src/manager.h"
#include "../src/adapter.h"
#include "../src/device.h"

#include "logging.h"
#include "textfile.h"
#include "ipc.h"
#include "device.h"
#include "error.h"
#include "avdtp.h"
#include "a2dp.h"
#include "headset.h"
#include "gateway.h"
#include "sink.h"
#include "control.h"
#include "manager.h"
#include "sdpd.h"
#include "telephony.h"

typedef enum {
	HEADSET	= 1 << 0,
	GATEWAY	= 1 << 1,
	SINK	= 1 << 2,
	SOURCE	= 1 << 3,
	CONTROL	= 1 << 4,
	TARGET	= 1 << 5,
	INVALID	= 1 << 6
} audio_service_type;

typedef enum {
		GENERIC_AUDIO = 0,
		ADVANCED_AUDIO,
		AV_REMOTE,
		GET_RECORDS
} audio_sdp_state_t;

struct audio_adapter {
	bdaddr_t src;
	char	*path;
	uint32_t hsp_ag_record_id;
	uint32_t hfp_ag_record_id;
	uint32_t hsp_hs_record_id;
	GIOChannel *hsp_ag_server;
	GIOChannel *hfp_ag_server;
	GIOChannel *hsp_hs_server;
};

static int max_connected_headsets = 1;
static DBusConnection *connection = NULL;
static GKeyFile *config = NULL;
static GSList *adapters = NULL;
static GSList *devices = NULL;

static struct enabled_interfaces enabled = {
	.hfp		= TRUE,
	.headset	= TRUE,
	.gateway	= FALSE,
	.sink		= TRUE,
	.source		= FALSE,
	.control	= TRUE,
};

static struct audio_adapter *find_adapter(GSList *list, const char *path)
{
	GSList *l;

	for (l = list; l; l = l->next) {
		struct audio_adapter *adapter = l->data;

		if (g_str_equal(adapter->path, path))
			return adapter;
	}

	return NULL;
}

gboolean server_is_enabled(bdaddr_t *src, uint16_t svc)
{
	switch (svc) {
	case HEADSET_SVCLASS_ID:
		return enabled.headset;
	case HEADSET_AGW_SVCLASS_ID:
		return enabled.gateway;
	case HANDSFREE_SVCLASS_ID:
		return enabled.headset && enabled.hfp;
	case HANDSFREE_AGW_SVCLASS_ID:
		return  FALSE;
	case AUDIO_SINK_SVCLASS_ID:
		return enabled.sink;
	case AV_REMOTE_TARGET_SVCLASS_ID:
	case AV_REMOTE_SVCLASS_ID:
		return enabled.control;
	default:
		return FALSE;
	}
}

static void handle_uuid(const char *uuidstr, struct audio_device *device)
{
	uuid_t uuid;
	uint16_t uuid16;

	if (bt_string2uuid(&uuid, uuidstr) < 0) {
		error("%s not detected as an UUID-128", uuidstr);
		return;
	}

	if (!sdp_uuid128_to_uuid(&uuid) && uuid.type != SDP_UUID16) {
		error("Could not convert %s to a UUID-16", uuidstr);
		return;
	}

	uuid16 = uuid.value.uuid16;

	if (!server_is_enabled(&device->src, uuid16)) {
		debug("audio handle_uuid: server not enabled for %s (0x%04x)",
				uuidstr, uuid16);
		return;
	}

	switch (uuid16) {
	case HEADSET_SVCLASS_ID:
		debug("Found Headset record");
		if (device->headset)
			headset_update(device, uuid16, uuidstr);
		else
			device->headset = headset_init(device, uuid16,
							uuidstr);
		break;
	case HEADSET_AGW_SVCLASS_ID:
		debug("Found Headset AG record");
		break;
	case HANDSFREE_SVCLASS_ID:
		debug("Found Handsfree record");
		if (device->headset)
			headset_update(device, uuid16, uuidstr);
		else
			device->headset = headset_init(device, uuid16,
							uuidstr);
		break;
	case HANDSFREE_AGW_SVCLASS_ID:
		debug("Found Handsfree AG record");
		break;
	case AUDIO_SINK_SVCLASS_ID:
		debug("Found Audio Sink");
		if (device->sink == NULL)
			device->sink = sink_init(device);
		break;
	case AUDIO_SOURCE_SVCLASS_ID:
		debug("Found Audio Source");
		break;
	case AV_REMOTE_SVCLASS_ID:
		debug("Found AV Remote");
		if (device->control == NULL)
			device->control = control_init(device);
		if (device->sink && sink_is_active(device))
			avrcp_connect(device);
		break;
	case AV_REMOTE_TARGET_SVCLASS_ID:
		debug("Found AV Target");
		if (device->control == NULL)
			device->control = control_init(device);
		if (device->sink && sink_is_active(device))
			avrcp_connect(device);
		break;
	default:
		debug("Unrecognized UUID: 0x%04X", uuid16);
		break;
	}
}

static sdp_record_t *hsp_ag_record(uint8_t ch)
{
	sdp_list_t *svclass_id, *pfseq, *apseq, *root;
	uuid_t root_uuid, svclass_uuid, ga_svclass_uuid;
	uuid_t l2cap_uuid, rfcomm_uuid;
	sdp_profile_desc_t profile;
	sdp_record_t *record;
	sdp_list_t *aproto, *proto[2];
	sdp_data_t *channel;

	record = sdp_record_alloc();
	if (!record)
		return NULL;

	sdp_uuid16_create(&root_uuid, PUBLIC_BROWSE_GROUP);
	root = sdp_list_append(0, &root_uuid);
	sdp_set_browse_groups(record, root);

	sdp_uuid16_create(&svclass_uuid, HEADSET_AGW_SVCLASS_ID);
	svclass_id = sdp_list_append(0, &svclass_uuid);
	sdp_uuid16_create(&ga_svclass_uuid, GENERIC_AUDIO_SVCLASS_ID);
	svclass_id = sdp_list_append(svclass_id, &ga_svclass_uuid);
	sdp_set_service_classes(record, svclass_id);

	sdp_uuid16_create(&profile.uuid, HEADSET_PROFILE_ID);
	profile.version = 0x0100;
	pfseq = sdp_list_append(0, &profile);
	sdp_set_profile_descs(record, pfseq);

	sdp_uuid16_create(&l2cap_uuid, L2CAP_UUID);
	proto[0] = sdp_list_append(0, &l2cap_uuid);
	apseq = sdp_list_append(0, proto[0]);

	sdp_uuid16_create(&rfcomm_uuid, RFCOMM_UUID);
	proto[1] = sdp_list_append(0, &rfcomm_uuid);
	channel = sdp_data_alloc(SDP_UINT8, &ch);
	proto[1] = sdp_list_append(proto[1], channel);
	apseq = sdp_list_append(apseq, proto[1]);

	aproto = sdp_list_append(0, apseq);
	sdp_set_access_protos(record, aproto);

	sdp_set_info_attr(record, "Headset Audio Gateway", 0, 0);

	sdp_data_free(channel);
	sdp_list_free(proto[0], 0);
	sdp_list_free(proto[1], 0);
	sdp_list_free(apseq, 0);
	sdp_list_free(pfseq, 0);
	sdp_list_free(aproto, 0);
	sdp_list_free(root, 0);
	sdp_list_free(svclass_id, 0);

	return record;
}

static sdp_record_t *hsp_hs_record(uint8_t ch)
{
	sdp_list_t *svclass_id, *pfseq, *apseq, *root;
	uuid_t root_uuid, svclass_uuid, ga_svclass_uuid;
	uuid_t l2cap_uuid, rfcomm_uuid;
	sdp_profile_desc_t profile;
	sdp_record_t *record;
	sdp_list_t *aproto, *proto[2];
	sdp_data_t *channel;

	record = sdp_record_alloc();
	if (!record)
		return NULL;

	sdp_uuid16_create(&root_uuid, PUBLIC_BROWSE_GROUP);
	root = sdp_list_append(0, &root_uuid);
	sdp_set_browse_groups(record, root);

	sdp_uuid16_create(&svclass_uuid, HEADSET_SVCLASS_ID);
	svclass_id = sdp_list_append(0, &svclass_uuid);
	sdp_uuid16_create(&ga_svclass_uuid, GENERIC_AUDIO_SVCLASS_ID);
	svclass_id = sdp_list_append(svclass_id, &ga_svclass_uuid);
	sdp_set_service_classes(record, svclass_id);

	sdp_uuid16_create(&profile.uuid, HEADSET_PROFILE_ID);
	profile.version = 0x0100;
	pfseq = sdp_list_append(0, &profile);
	sdp_set_profile_descs(record, pfseq);

	sdp_uuid16_create(&l2cap_uuid, L2CAP_UUID);
	proto[0] = sdp_list_append(0, &l2cap_uuid);
	apseq = sdp_list_append(0, proto[0]);

	sdp_uuid16_create(&rfcomm_uuid, RFCOMM_UUID);
	proto[1] = sdp_list_append(0, &rfcomm_uuid);
	channel = sdp_data_alloc(SDP_UINT8, &ch);
	proto[1] = sdp_list_append(proto[1], channel);
	apseq = sdp_list_append(apseq, proto[1]);

	aproto = sdp_list_append(0, apseq);
	sdp_set_access_protos(record, aproto);

	sdp_set_info_attr(record, "Headset", 0, 0);

	sdp_data_free(channel);
	sdp_list_free(proto[0], 0);
	sdp_list_free(proto[1], 0);
	sdp_list_free(apseq, 0);
	sdp_list_free(pfseq, 0);
	sdp_list_free(aproto, 0);
	sdp_list_free(root, 0);
	sdp_list_free(svclass_id, 0);

	return record;
}

static sdp_record_t *hfp_ag_record(uint8_t ch, uint32_t feat)
{
	sdp_list_t *svclass_id, *pfseq, *apseq, *root;
	uuid_t root_uuid, svclass_uuid, ga_svclass_uuid;
	uuid_t l2cap_uuid, rfcomm_uuid;
	sdp_profile_desc_t profile;
	sdp_list_t *aproto, *proto[2];
	sdp_record_t *record;
	sdp_data_t *channel, *features;
	uint8_t netid = 0x01;
	uint16_t sdpfeat;
	sdp_data_t *network = sdp_data_alloc(SDP_UINT8, &netid);

	record = sdp_record_alloc();
	if (!record)
		return NULL;

	sdp_uuid16_create(&root_uuid, PUBLIC_BROWSE_GROUP);
	root = sdp_list_append(0, &root_uuid);
	sdp_set_browse_groups(record, root);

	sdp_uuid16_create(&svclass_uuid, HANDSFREE_AGW_SVCLASS_ID);
	svclass_id = sdp_list_append(0, &svclass_uuid);
	sdp_uuid16_create(&ga_svclass_uuid, GENERIC_AUDIO_SVCLASS_ID);
	svclass_id = sdp_list_append(svclass_id, &ga_svclass_uuid);
	sdp_set_service_classes(record, svclass_id);

	sdp_uuid16_create(&profile.uuid, HANDSFREE_PROFILE_ID);
	profile.version = 0x0105;
	pfseq = sdp_list_append(0, &profile);
	sdp_set_profile_descs(record, pfseq);

	sdp_uuid16_create(&l2cap_uuid, L2CAP_UUID);
	proto[0] = sdp_list_append(0, &l2cap_uuid);
	apseq = sdp_list_append(0, proto[0]);

	sdp_uuid16_create(&rfcomm_uuid, RFCOMM_UUID);
	proto[1] = sdp_list_append(0, &rfcomm_uuid);
	channel = sdp_data_alloc(SDP_UINT8, &ch);
	proto[1] = sdp_list_append(proto[1], channel);
	apseq = sdp_list_append(apseq, proto[1]);

	sdpfeat = (uint16_t) feat & 0xF;
	features = sdp_data_alloc(SDP_UINT16, &sdpfeat);
	sdp_attr_add(record, SDP_ATTR_SUPPORTED_FEATURES, features);

	aproto = sdp_list_append(0, apseq);
	sdp_set_access_protos(record, aproto);

	sdp_set_info_attr(record, "Hands-Free Audio Gateway", 0, 0);

	sdp_attr_add(record, SDP_ATTR_EXTERNAL_NETWORK, network);

	sdp_data_free(channel);
	sdp_list_free(proto[0], 0);
	sdp_list_free(proto[1], 0);
	sdp_list_free(apseq, 0);
	sdp_list_free(pfseq, 0);
	sdp_list_free(aproto, 0);
	sdp_list_free(root, 0);
	sdp_list_free(svclass_id, 0);

	return record;
}

static void auth_cb(DBusError *derr, void *user_data)
{
	struct audio_device *device = user_data;
	const char *uuid;

	if (get_hfp_active(device))
		uuid = HFP_AG_UUID;
	else
		uuid = HSP_AG_UUID;

	if (derr && dbus_error_is_set(derr)) {
		error("Access denied: %s", derr->message);

		headset_set_state(device, HEADSET_STATE_DISCONNECTED);
	} else {
		char hs_address[18];

		ba2str(&device->dst, hs_address);
		debug("Accepted headset connection from %s for %s",
						hs_address, device->path);

		headset_set_authorized(device);
	}
}

static void ag_io_cb(GIOChannel *chan, int err, const bdaddr_t *src,
			const bdaddr_t *dst, gpointer data)
{
	struct audio_adapter *adapter = data;
	const char *server_uuid, *remote_uuid;
	uint16_t svclass;
	struct audio_device *device;
	gboolean hfp_active;

	if (err < 0) {
		error("accept: %s (%d)", strerror(-err), -err);
		return;
	}

	if (chan == adapter->hsp_ag_server) {
		hfp_active = FALSE;
		server_uuid = HSP_AG_UUID;
		remote_uuid = HSP_HS_UUID;
		svclass = HEADSET_SVCLASS_ID;
	} else {
		hfp_active = TRUE;
		server_uuid = HFP_AG_UUID;
		remote_uuid = HFP_HS_UUID;
		svclass = HANDSFREE_SVCLASS_ID;
	}

	device = manager_get_device(src, dst);
	if (!device)
		goto drop;

	if (!manager_allow_headset_connection(&device->src)) {
		debug("Refusing headset: too many existing connections");
		goto drop;
	}

	if (!device->headset)
		btd_device_add_uuid(device->btd_dev, remote_uuid);

	if (headset_get_state(device) > HEADSET_STATE_DISCONNECTED) {
		debug("Refusing new connection since one already exists");
		goto drop;
	}

	set_hfp_active(device, hfp_active);

	if (headset_connect_rfcomm(device, chan) < 0) {
		error("Allocating new GIOChannel failed!");
		goto drop;
	}

	headset_set_state(device, HEADSET_STATE_CONNECT_IN_PROGRESS);

	err = btd_request_authorization(&device->src, &device->dst,
					server_uuid, auth_cb, device);
	if (err < 0) {
		debug("Authorization denied: %s", strerror(-err));
		headset_set_state(device, HEADSET_STATE_DISCONNECTED);
		return;
	}

	return;

drop:
	g_io_channel_close(chan);
	g_io_channel_unref(chan);
}

static void hs_io_cb(GIOChannel *chan, int err, const bdaddr_t *src,
		const bdaddr_t *dst, void *data)
{
	/*Stub*/
	return;
}

static int headset_server_init(struct audio_adapter *adapter)
{
	uint8_t chan = DEFAULT_HS_AG_CHANNEL;
	sdp_record_t *record;
	gboolean master = TRUE;
	GError *err = NULL;
	uint32_t features, flags;

	if (config) {
		gboolean tmp;

		tmp = g_key_file_get_boolean(config, "General", "Master",
						&err);
		if (err) {
			debug("audio.conf: %s", err->message);
			g_clear_error(&err);
		} else
			master = tmp;
	}

	flags = RFCOMM_LM_AUTH | RFCOMM_LM_ENCRYPT;

	if (master)
		flags |= RFCOMM_LM_MASTER;

	adapter->hsp_ag_server = bt_rfcomm_listen(&adapter->src, chan, flags,
							ag_io_cb, adapter);
	if (!adapter->hsp_ag_server)
		goto failed;

	record = hsp_ag_record(chan);
	if (!record) {
		error("Unable to allocate new service record");
		goto failed;
	}

	if (add_record_to_server(&adapter->src, record) < 0) {
		error("Unable to register HS AG service record");
		sdp_record_free(record);
		goto failed;
	}
	adapter->hsp_ag_record_id = record->handle;

	features = headset_config_init(config);

	if (!enabled.hfp)
		return 0;

	chan = DEFAULT_HF_AG_CHANNEL;

	adapter->hfp_ag_server = bt_rfcomm_listen(&adapter->src, chan, flags,
							ag_io_cb, adapter);