diff options
Diffstat (limited to 'audio/gateway.c')
| -rw-r--r-- | audio/gateway.c | 555 |
1 files changed, 555 insertions, 0 deletions
diff --git a/audio/gateway.c b/audio/gateway.c new file mode 100644 index 00000000..2ee67226 --- /dev/null +++ b/audio/gateway.c @@ -0,0 +1,555 @@ +/* + * + * BlueZ - Bluetooth protocol stack for Linux + * + * Copyright (C) 2004-2007 Marcel Holtmann <marcel@holtmann.org> + * + * + * 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 <errno.h> +#include <fcntl.h> +#include <unistd.h> +#include <stdlib.h> +#include <signal.h> +#include <string.h> +#include <getopt.h> +#include <sys/ioctl.h> +#include <sys/socket.h> + +#include <bluetooth/bluetooth.h> +#include <bluetooth/rfcomm.h> + +#include <glib.h> + +#include <dbus/dbus.h> + +#include "dbus.h" +#include "dbus-helper.h" +#include "logging.h" +#include "manager.h" +#include "error.h" + +static gboolean disable_hfp = FALSE; +static gboolean sco_over_hci = TRUE; + +static uint32_t hs_record_id = 0; +static uint32_t hf_record_id = 0; + +static GIOChannel *hs_server = NULL; +static GIOChannel *hf_server = NULL; + +static DBusConnection *connection = NULL; + +static int gateway_hsp_ag_record(sdp_buf_t *buf, 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_list_t *aproto, *proto[2]; + sdp_record_t record; + sdp_data_t *channel; + int ret; + + memset(&record, 0, sizeof(sdp_record_t)); + + 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); + + if (sdp_gen_record_pdu(&record, buf) < 0) + ret = -1; + else + ret = 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); + sdp_list_free(record.attrlist, (sdp_free_func_t) sdp_data_free); + sdp_list_free(record.pattern, free); + + return ret; +} + +static int gateway_hfp_ag_record(sdp_buf_t *buf, 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_list_t *aproto, *proto[2]; + sdp_record_t record; + uint16_t u16 = 0x0009; + sdp_data_t *channel, *features; + uint8_t netid = 0x01; + sdp_data_t *network = sdp_data_alloc(SDP_UINT8, &netid); + int ret; + + memset(&record, 0, sizeof(sdp_record_t)); + + 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]); + + features = sdp_data_alloc(SDP_UINT16, &u16); + 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); + + if (sdp_gen_record_pdu(&record, buf) < 0) + ret = -1; + else + ret = 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); + sdp_list_free(record.attrlist, (sdp_free_func_t) sdp_data_free); + sdp_list_free(record.pattern, free); + + return ret; +} + +static uint32_t gateway_add_ag_record(uint8_t channel, sdp_buf_t *buf) +{ + DBusMessage *msg, *reply; + DBusError derr; + dbus_uint32_t rec_id; + + msg = dbus_message_new_method_call("org.bluez", "/org/bluez", + "org.bluez.Database", "AddServiceRecord"); + if (!msg) { + error("Can't allocate new method call"); + return 0; + } + + dbus_message_append_args(msg, DBUS_TYPE_ARRAY, DBUS_TYPE_BYTE, + &buf->data, buf->data_size, DBUS_TYPE_INVALID); + + dbus_error_init(&derr); + reply = dbus_connection_send_with_reply_and_block(connection, msg, + -1, &derr); + + dbus_message_unref(msg); + + if (dbus_error_is_set(&derr) || + dbus_set_error_from_message(&derr, reply)) { + error("Adding service record failed: %s", derr.message); + dbus_error_free(&derr); + return 0; + } + + dbus_message_get_args(reply, &derr, DBUS_TYPE_UINT32, &rec_id, + DBUS_TYPE_INVALID); + + if (dbus_error_is_set(&derr)) { + error("Invalid arguments to AddServiceRecord reply: %s", + derr.message); + dbus_message_unref(reply); + dbus_error_free(&derr); + return 0; + } + + dbus_message_unref(reply); + + debug("add_ag_record: got record id 0x%x", rec_id); + + return rec_id; +} + +static int gateway_remove_ag_record(uint32_t rec_id) +{ + DBusMessage *msg, *reply; + DBusError derr; + + msg = dbus_message_new_method_call("org.bluez", "/org/bluez", + "org.bluez.Database", + "RemoveServiceRecord"); + if (!msg) { + error("Can't allocate new method call"); + return 0; + } + + dbus_message_append_args(msg, DBUS_TYPE_UINT32, &rec_id, + DBUS_TYPE_INVALID); + + dbus_error_init(&derr); + reply = dbus_connection_send_with_reply_and_block(connection, msg, + -1, &derr); + + dbus_message_unref(msg); + + if (dbus_error_is_set(&derr)) { + error("Removing service record 0x%x failed: %s", + rec_id, derr.message); + dbus_error_free(&derr); + return 0; + } + + dbus_message_unref(reply); + + return 0; +} + +static void send_cancel_auth(struct device *device) +{ + DBusMessage *cancel; + char addr[18], *address = addr; + const char *uuid; + + if (headset_get_type(device) == SVC_HEADSET) + uuid = HSP_AG_UUID; + else + uuid = HFP_AG_UUID; + + cancel = dbus_message_new_method_call("org.bluez", "/org/bluez", + "org.bluez.Database", + "CancelAuthorizationRequest"); + if (!cancel) { + error("Unable to allocate new method call"); + return; + } + + ba2str(&device->bda, addr); + + dbus_message_append_args(cancel, DBUS_TYPE_STRING, &address, + DBUS_TYPE_STRING, &uuid, DBUS_TYPE_INVALID); + + send_message_and_unref(connection, cancel); +} + +static void auth_cb(DBusPendingCall *call, void *data) +{ + struct device *device = data; + DBusMessage *reply = dbus_pending_call_steal_reply(call); + DBusError err; + + dbus_error_init(&err); + if (dbus_set_error_from_message(&err, reply)) { + error("Access denied: %s", err.message); + if (dbus_error_has_name(&err, DBUS_ERROR_NO_REPLY)) { + debug("Canceling authorization request"); + send_cancel_auth(device); + } + dbus_error_free(&err); + headset_close_rfcomm(device); + } else { + char hs_address[18]; + + headset_set_state(device, HEADSET_STATE_CONNECTED); + + ba2str(&device->bda, hs_address); + + debug("Accepted headset connection from %s for %s", hs_address, + device->path); + } + + dbus_message_unref(reply); +} + +static gboolean gateway_io_cb(GIOChannel *chan, GIOCondition cond, + void *data) +{ + int srv_sk, cli_sk; + struct sockaddr_rc addr; + socklen_t size; + char hs_address[18], *address = hs_address; + const char *uuid; + struct device *device; + DBusMessage *auth; + DBusPendingCall *pending; + + if (cond & G_IO_NVAL) + return FALSE; + + if (cond & (G_IO_HUP | G_IO_ERR)) { + error("Hangup or error on rfcomm server socket"); + g_io_channel_close(chan); + raise(SIGTERM); + return FALSE; + } + + srv_sk = g_io_channel_unix_get_fd(chan); + + size = sizeof(struct sockaddr_rc); + cli_sk = accept(srv_sk, (struct sockaddr *) &addr, &size); + if (cli_sk < 0) { + error("accept: %s (%d)", strerror(errno), errno); + return TRUE; + } + + device = manager_device_connected(&addr.rc_bdaddr); + if (!device) { + close(cli_sk); + return TRUE; + } + + if (headset_get_state(device) > HEADSET_STATE_DISCONNECTED) { + debug("Refusing new connection since one already exists"); + close(cli_sk); + return TRUE; + } + + if (headset_connect_rfcomm(device, cli_sk) < 0) { + error("Allocating new GIOChannel failed!"); + close(cli_sk); + return TRUE; + } + + if (chan == hs_server) { + headset_set_type(device, SVC_HEADSET); + uuid = HSP_AG_UUID; + } else { + headset_set_type(device, SVC_HANDSFREE); + uuid = HFP_AG_UUID; + } + + auth = dbus_message_new_method_call("org.bluez", "/org/bluez", + "org.bluez.Database", + "RequestAuthorization"); + if (!auth) { + error("Unable to allocate RequestAuthorization method call"); + goto failed; + } + + ba2str(&device->bda, hs_address); + + dbus_message_append_args(auth, DBUS_TYPE_STRING, &address, + DBUS_TYPE_STRING, &uuid, DBUS_TYPE_INVALID); + + if (!dbus_connection_send_with_reply(connection, auth, &pending, -1)) { + error("Sending of authorization request failed"); + goto failed; + } + + dbus_pending_call_set_notify(pending, auth_cb, device, NULL); + dbus_pending_call_unref(pending); + dbus_message_unref(auth); + + return TRUE; + +failed: + headset_close_rfcomm(device); + + return TRUE; +} + +static GIOChannel *server_socket(uint8_t *channel) +{ + int sock, lm; + struct sockaddr_rc addr; + socklen_t sa_len; + GIOChannel *io; + + sock = socket(AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM); + if (sock < 0) { + error("server socket: %s (%d)", strerror(errno), errno); + return NULL; + } + + lm = RFCOMM_LM_SECURE; + if (setsockopt(sock, SOL_RFCOMM, RFCOMM_LM, &lm, sizeof(lm)) < 0) { + error("server setsockopt: %s (%d)", strerror(errno), errno); + close(sock); + return NULL; + } + + memset(&addr, 0, sizeof(addr)); + addr.rc_family = AF_BLUETOOTH; + bacpy(&addr.rc_bdaddr, BDADDR_ANY); + addr.rc_channel = channel ? *channel : 0; + + if (bind(sock, (struct sockaddr *) &addr, sizeof(addr)) < 0) { + error("server bind: %s", strerror(errno), errno); + close(sock); + return NULL; + } + + if (listen(sock, 1) < 0) { + error("server listen: %s", strerror(errno), errno); + close(sock); + return NULL; + } + + sa_len = sizeof(struct sockaddr_rc); + getsockname(sock, (struct sockaddr *) &addr, &sa_len); + *channel = addr.rc_channel; + + io = g_io_channel_unix_new(sock); + if (!io) { + error("Unable to allocate new io channel"); + close(sock); + return NULL; + } + + return io; +} + +int gateway_init(DBusConnection *conn, gboolean no_hfp, gboolean sco_hci) +{ + uint8_t chan = DEFAULT_HS_AG_CHANNEL; + sdp_buf_t buf; + + connection = dbus_connection_ref(conn); + + hs_server = server_socket(&chan); + if (!hs_server) + return -1; + + if (gateway_hsp_ag_record(&buf, chan) < 0) { + error("Unable to allocate new service record"); + return -1; + } + + hs_record_id = gateway_add_ag_record(chan, &buf); + free(buf.data); + if (!hs_record_id) { + error("Unable to register HS AG service record"); + g_io_channel_unref(hs_server); + hs_server = NULL; + return -1; + } + + g_io_add_watch(hs_server, G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL, + (GIOFunc) gateway_io_cb, NULL); + + disable_hfp = no_hfp; + + sco_over_hci = sco_hci; + + if (disable_hfp) + return 0; + + chan = DEFAULT_HF_AG_CHANNEL; + + hf_server = server_socket(&chan); + if (!hf_server) + return -1; + + if (gateway_hfp_ag_record(&buf, chan) < 0) { + error("Unable to allocate new service record"); + return -1; + } + + hf_record_id = gateway_add_ag_record(chan, &buf); + free(buf.data); + if (!hf_record_id) { + error("Unable to register HS AG service record"); + g_io_channel_unref(hf_server); + hs_server = NULL; + return -1; + } + + g_io_add_watch(hf_server, G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL, + (GIOFunc) gateway_io_cb, NULL); + + return 0; +} + +void gateway_exit(void) +{ + if (hs_record_id) { + gateway_remove_ag_record(hs_record_id); + hs_record_id = 0; + } + + if (hs_server) { + g_io_channel_unref(hs_server); + hs_server = NULL; + } + + if (hf_record_id) { + gateway_remove_ag_record(hf_record_id); + hf_record_id = 0; + } + + if (hf_server) { + g_io_channel_unref(hf_server); + hf_server = NULL; + } + + dbus_connection_unref(connection); + connection = NULL; +} |