Add audio gateway files that implements org.bluez.audio.Gateway interface.

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;
+}