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authorJohan Hedberg <johan.hedberg@nokia.com>2007-10-22 14:11:04 +0000
committerJohan Hedberg <johan.hedberg@nokia.com>2007-10-22 14:11:04 +0000
commit1a291c3482e7fdb498c178650d318b991b27a3d2 (patch)
treefaaeabbd559be2adfb67beb5669e7fb1883d9926 /audio
parentf3ebb007ac66682bbba7926eac0c12258a945490 (diff)
Add skeleton for AVRCP support
Diffstat (limited to 'audio')
-rw-r--r--audio/Makefile.am2
-rw-r--r--audio/control.c586
-rw-r--r--audio/control.h27
-rw-r--r--audio/manager.c7
4 files changed, 621 insertions, 1 deletions
diff --git a/audio/Makefile.am b/audio/Makefile.am
index 13ed4080..979adba3 100644
--- a/audio/Makefile.am
+++ b/audio/Makefile.am
@@ -13,7 +13,7 @@ service_PROGRAMS = bluetoothd-service-audio
bluetoothd_service_audio_SOURCES = main.c \
manager.h manager.c headset.h headset.c ipc.h unix.h unix.c \
error.h error.c device.h device.c gateway.h gateway.c \
- sink.c sink.h avdtp.c avdtp.h a2dp.c a2dp.h
+ sink.c sink.h avdtp.c avdtp.h a2dp.c a2dp.h control.c control.h
bluetoothd_service_audio_LDADD = $(top_builddir)/common/libhelper.a \
@GLIB_LIBS@ @DBUS_LIBS@ @BLUEZ_LIBS@
diff --git a/audio/control.c b/audio/control.c
new file mode 100644
index 00000000..4ffaa77e
--- /dev/null
+++ b/audio/control.c
@@ -0,0 +1,586 @@
+/*
+ *
+ * BlueZ - Bluetooth protocol stack for Linux
+ *
+ * Copyright (C) 2007 Marcel Holtmann <marcel@holtmann.org>
+ * Copyright (C) 2007 Nokia Corporation
+ *
+ * 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 <stdlib.h>
+#include <stdint.h>
+#include <errno.h>
+#include <unistd.h>
+#include <assert.h>
+#include <signal.h>
+#include <netinet/in.h>
+
+#include <glib.h>
+#include <dbus/dbus.h>
+
+#include <bluetooth/bluetooth.h>
+#include <bluetooth/sdp.h>
+#include <bluetooth/sdp_lib.h>
+#include <bluetooth/l2cap.h>
+
+#include "logging.h"
+#include "device.h"
+#include "manager.h"
+#include "avdtp.h"
+#include "control.h"
+
+#define AVCTP_PSM 23
+
+static DBusConnection *connection = NULL;
+
+static uint32_t tg_record_id = 0;
+static uint32_t ct_record_id = 0;
+
+static GIOChannel *avctp_server = NULL;
+
+static GSList *sessions = NULL;
+
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+
+struct avctp_header {
+ uint8_t ipid:1;
+ uint8_t cr:1;
+ uint8_t packet_type:2;
+ uint8_t transaction:4;
+ uint16_t pid;
+} __attribute__ ((packed));
+
+struct avrcp_header {
+ uint8_t code:4;
+ uint8_t _hdr0:4;
+ uint8_t subunit_id:3;
+ uint8_t subunit_type:5;
+ uint8_t opcode;
+} __attribute__ ((packed));
+
+#elif __BYTE_ORDER == __BIG_ENDIAN
+
+struct avctp_header {
+ uint8_t transaction:4;
+ uint8_t packet_type:2;
+ uint8_t cr:1;
+ uint8_t ipid:1;
+ uint16_t pid;
+} __attribute__ ((packed));
+
+struct avrcp_header {
+ uint8_t _hdr0:4;
+ uint8_t code:4;
+ uint8_t subunit_type:5;
+ uint8_t subunit_id:3;
+ uint8_t opcode;
+} __attribute__ ((packed));
+
+#else
+#error "Unknown byte order"
+#endif
+
+struct avctp {
+ bdaddr_t src;
+ bdaddr_t dst;
+
+ int sock;
+
+ guint io;
+
+ uint16_t mtu;
+
+ DBusPendingCall *pending_auth;
+};
+
+static int avrcp_ct_record(sdp_buf_t *buf)
+{
+ sdp_list_t *svclass_id, *pfseq, *apseq, *root;
+ uuid_t root_uuid, l2cap, avctp, avrct;
+ sdp_profile_desc_t profile[1];
+ sdp_list_t *aproto, *proto[2];
+ sdp_record_t record;
+ sdp_data_t *psm, *version, *features;
+ uint16_t lp = AVCTP_PSM, ver = 0x0103, feat = 0x000f;
+ int ret = 0;
+
+ 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);
+
+ /* Service Class ID List */
+ sdp_uuid16_create(&avrct, AV_REMOTE_SVCLASS_ID);
+ svclass_id = sdp_list_append(0, &avrct);
+ sdp_set_service_classes(&record, svclass_id);
+
+ /* Protocol Descriptor List */
+ sdp_uuid16_create(&l2cap, L2CAP_UUID);
+ proto[0] = sdp_list_append(0, &l2cap);
+ psm = sdp_data_alloc(SDP_UINT16, &lp);
+ proto[0] = sdp_list_append(proto[0], psm);
+ apseq = sdp_list_append(0, proto[0]);
+
+ sdp_uuid16_create(&avctp, AVCTP_UUID);
+ proto[1] = sdp_list_append(0, &avctp);
+ version = sdp_data_alloc(SDP_UINT16, &ver);
+ proto[1] = sdp_list_append(proto[1], version);
+ apseq = sdp_list_append(apseq, proto[1]);
+
+ aproto = sdp_list_append(0, apseq);
+ sdp_set_access_protos(&record, aproto);
+
+ /* Bluetooth Profile Descriptor List */
+ sdp_uuid16_create(&profile[0].uuid, AV_REMOTE_PROFILE_ID);
+ profile[0].version = ver;
+ pfseq = sdp_list_append(0, &profile[0]);
+ sdp_set_profile_descs(&record, pfseq);
+
+ features = sdp_data_alloc(SDP_UINT16, &feat);
+ sdp_attr_add(&record, SDP_ATTR_SUPPORTED_FEATURES, features);
+
+ sdp_set_info_attr(&record, "AVRCP CT", 0, 0);
+
+ if (sdp_gen_record_pdu(&record, buf) < 0)
+ ret = -1;
+ else
+ ret = 0;
+
+ free(psm);
+ free(version);
+ 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 avrcp_tg_record(sdp_buf_t *buf)
+{
+ sdp_list_t *svclass_id, *pfseq, *apseq, *root;
+ uuid_t root_uuid, l2cap, avctp, avrtg;
+ sdp_profile_desc_t profile[1];
+ sdp_list_t *aproto, *proto[2];
+ sdp_record_t record;
+ sdp_data_t *psm, *version, *features;
+ uint16_t lp = AVCTP_PSM, ver = 0x0103, feat = 0x000f;
+ int ret = 0;
+
+ 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);
+
+ /* Service Class ID List */
+ sdp_uuid16_create(&avrtg, AV_REMOTE_TARGET_SVCLASS_ID);
+ svclass_id = sdp_list_append(0, &avrtg);
+ sdp_set_service_classes(&record, svclass_id);
+
+ /* Protocol Descriptor List */
+ sdp_uuid16_create(&l2cap, L2CAP_UUID);
+ proto[0] = sdp_list_append(0, &l2cap);
+ psm = sdp_data_alloc(SDP_UINT16, &lp);
+ proto[0] = sdp_list_append(proto[0], psm);
+ apseq = sdp_list_append(0, proto[0]);
+
+ sdp_uuid16_create(&avctp, AVCTP_UUID);
+ proto[1] = sdp_list_append(0, &avctp);
+ version = sdp_data_alloc(SDP_UINT16, &ver);
+ proto[1] = sdp_list_append(proto[1], version);
+ apseq = sdp_list_append(apseq, proto[1]);
+
+ aproto = sdp_list_append(0, apseq);
+ sdp_set_access_protos(&record, aproto);
+
+ /* Bluetooth Profile Descriptor List */
+ sdp_uuid16_create(&profile[0].uuid, AV_REMOTE_PROFILE_ID);
+ profile[0].version = ver;
+ pfseq = sdp_list_append(0, &profile[0]);
+ sdp_set_profile_descs(&record, pfseq);
+
+ features = sdp_data_alloc(SDP_UINT16, &feat);
+ sdp_attr_add(&record, SDP_ATTR_SUPPORTED_FEATURES, features);
+
+ sdp_set_info_attr(&record, "AVRCP TG", 0, 0);
+
+ if (sdp_gen_record_pdu(&record, buf) < 0)
+ ret = -1;
+ else
+ ret = 0;
+
+ free(psm);
+ free(version);
+ sdp_list_free(proto[0], 0);
+ sdp_list_free(proto[1], 0);
+ sdp_list_free(apseq, 0);
+ sdp_list_free(aproto, 0);
+ sdp_list_free(pfseq, 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 GIOChannel *avctp_server_socket(void)
+{
+ int sock, lm;
+ struct sockaddr_l2 addr;
+ GIOChannel *io;
+
+ sock = socket(AF_BLUETOOTH, SOCK_SEQPACKET, BTPROTO_L2CAP);
+ if (sock < 0) {
+ error("AVCTP server socket: %s (%d)", strerror(errno), errno);
+ return NULL;
+ }
+
+ lm = L2CAP_LM_SECURE;
+ if (setsockopt(sock, SOL_L2CAP, L2CAP_LM, &lm, sizeof(lm)) < 0) {
+ error("AVCTP server setsockopt: %s (%d)", strerror(errno), errno);
+ close(sock);
+ return NULL;
+ }
+
+ memset(&addr, 0, sizeof(addr));
+ addr.l2_family = AF_BLUETOOTH;
+ bacpy(&addr.l2_bdaddr, BDADDR_ANY);
+ addr.l2_psm = htobs(AVCTP_PSM);
+
+ if (bind(sock, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
+ error("AVCTP server bind: %s", strerror(errno), errno);
+ close(sock);
+ return NULL;
+ }
+
+ if (listen(sock, 4) < 0) {
+ error("AVCTP server listen: %s", strerror(errno), errno);
+ close(sock);
+ return NULL;
+ }
+
+ io = g_io_channel_unix_new(sock);
+ if (!io) {
+ error("Unable to allocate new io channel");
+ close(sock);
+ return NULL;
+ }
+
+ return io;
+}
+
+static struct avctp *find_session(bdaddr_t *src, bdaddr_t *dst)
+{
+ GSList *l;
+
+ for (l = sessions; l != NULL; l = g_slist_next(l)) {
+ struct avctp *s = l->data;
+
+ if (bacmp(src, &s->src) || bacmp(dst, &s->dst))
+ continue;
+
+ return s;
+ }
+
+ return NULL;
+}
+
+static void avctp_unref(struct avctp *session)
+{
+ sessions = g_slist_remove(sessions, session);
+ if (session->sock >= 0)
+ close(session->sock);
+ if (session->io)
+ g_source_remove(session->io);
+ g_free(session);
+}
+
+static struct avctp *avctp_get(bdaddr_t *src, bdaddr_t *dst)
+{
+ struct avctp *session;
+
+ assert(src != NULL);
+ assert(dst != NULL);
+
+ session = find_session(src, dst);
+ if (session) {
+ if (session->pending_auth)
+ return NULL;
+ else
+ return session;
+ }
+
+ session = g_new0(struct avctp, 1);
+
+ session->sock = -1;
+ bacpy(&session->src, src);
+ bacpy(&session->dst, dst);
+
+ sessions = g_slist_append(sessions, session);
+
+ return session;
+}
+
+static gboolean session_cb(GIOChannel *chan, GIOCondition cond,
+ gpointer data)
+{
+ struct avctp *session = data;
+ char buf[1024];
+ struct avctp_header *avctp;
+ struct avrcp_header *avrcp;
+ int ret;
+
+ if (!(cond | G_IO_IN))
+ goto failed;
+
+ ret = read(session->sock, buf, sizeof(buf));
+ if (ret <= 0)
+ goto failed;
+
+ debug("Got %d bytes of data for AVCTP session %p", ret, session);
+
+ if (ret < sizeof(struct avctp_header)) {
+ error("Too small AVCTP packet");
+ goto failed;
+ }
+
+ avctp = (struct avctp_header *) buf;
+
+ debug("AVCTP transaction %u, packet type %u, C/R %u, IPID %u, "
+ "PID 0x%04X",
+ avctp->transaction, avctp->packet_type,
+ avctp->cr, avctp->ipid, ntohs(avctp->pid));
+
+ ret -= sizeof(struct avctp_header);
+ if (ret < sizeof(struct avrcp_header)) {
+ error("Too small AVRCP packet");
+ goto failed;
+ }
+
+ avrcp = (struct avrcp_header *) (buf + sizeof(struct avctp_header));
+
+ debug("AVRCP %s 0x%01X, subunit_type 0x%02X, subunit_id 0x%01X, "
+ "opcode 0x%02X", avctp->cr ? "response" : "command",
+ avrcp->code, avrcp->subunit_type, avrcp->subunit_id,
+ avrcp->opcode);
+
+ return TRUE;
+
+failed:
+ debug("AVCTP session %p got disconnected", session);
+ avctp_unref(session);
+ return FALSE;
+}
+
+static void auth_cb(DBusPendingCall *call, void *data)
+{
+ GIOChannel *io;
+ struct avctp *session = data;
+ DBusMessage *reply = dbus_pending_call_steal_reply(call);
+ DBusError err;
+
+ dbus_pending_call_unref(session->pending_auth);
+ session->pending_auth = NULL;
+
+ 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");
+ manager_cancel_authorize(&session->dst,
+ ADVANCED_AUDIO_UUID,
+ NULL);
+ }
+
+ avctp_unref(session);
+
+ dbus_message_unref(reply);
+
+ return;
+ }
+
+ g_source_remove(session->io);
+
+ io = g_io_channel_unix_new(session->sock);
+ session->io = g_io_add_watch(io,
+ G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL,
+ (GIOFunc) session_cb, session);
+ g_io_channel_unref(io);
+}
+
+static gboolean avctp_server_cb(GIOChannel *chan, GIOCondition cond, void *data)
+{
+ int srv_sk, cli_sk;
+ socklen_t size;
+ struct sockaddr_l2 addr;
+ struct l2cap_options l2o;
+ bdaddr_t src, dst;
+ struct avctp *session;
+ GIOChannel *io;
+ GIOCondition flags = G_IO_ERR | G_IO_HUP | G_IO_NVAL;
+ char address[18];
+
+ if (cond & G_IO_NVAL)
+ return FALSE;
+
+ if (cond & (G_IO_HUP | G_IO_ERR)) {
+ error("Hangup or error on AVCTP server socket");
+ g_io_channel_close(chan);
+ raise(SIGTERM);
+ return FALSE;
+ }
+
+ srv_sk = g_io_channel_unix_get_fd(chan);
+
+ size = sizeof(struct sockaddr_l2);
+ cli_sk = accept(srv_sk, (struct sockaddr *) &addr, &size);
+ if (cli_sk < 0) {
+ error("AVCTP accept: %s (%d)", strerror(errno), errno);
+ return TRUE;
+ }
+
+ bacpy(&dst, &addr.l2_bdaddr);
+
+ ba2str(&dst, address);
+ debug("AVCTP: incoming connect from %s", address);
+
+ size = sizeof(struct sockaddr_l2);
+ if (getsockname(cli_sk, (struct sockaddr *) &addr, &size) < 0) {
+ error("getsockname: %s (%d)", strerror(errno), errno);
+ close(cli_sk);
+ return TRUE;
+ }
+
+ bacpy(&src, &addr.l2_bdaddr);
+
+ memset(&l2o, 0, sizeof(l2o));
+ size = sizeof(l2o);
+ if (getsockopt(cli_sk, SOL_L2CAP, L2CAP_OPTIONS, &l2o, &size) < 0) {
+ error("getsockopt(L2CAP_OPTIONS): %s (%d)", strerror(errno),
+ errno);
+ close(cli_sk);
+ return TRUE;
+ }
+
+ session = avctp_get(&src, &dst);
+
+ if (session->sock >= 0) {
+ error("Refusing unexpected connect from %s", address);
+ close(cli_sk);
+ return TRUE;
+ }
+
+ if (avdtp_is_connected(&src, &dst))
+ goto proceed;
+
+ if (!manager_authorize(&dst, AVRCP_TARGET_UUID, auth_cb, session,
+ &session->pending_auth)) {
+ close(cli_sk);
+ avctp_unref(session);
+ return TRUE;
+ }
+
+proceed:
+ session->mtu = l2o.imtu;
+ session->sock = cli_sk;
+
+ io = g_io_channel_unix_new(session->sock);
+ if (!session->pending_auth)
+ flags |= G_IO_IN;
+ session->io = g_io_add_watch(io, flags, (GIOFunc) session_cb, session);
+ g_io_channel_unref(io);
+
+ return TRUE;
+}
+
+int control_init(DBusConnection *conn)
+{
+ sdp_buf_t buf;
+
+ if (avctp_server)
+ return 0;
+
+ connection = dbus_connection_ref(conn);
+
+ if (avrcp_tg_record(&buf) < 0) {
+ error("Unable to allocate new service record");
+ return -1;
+ }
+
+ tg_record_id = add_service_record(conn, &buf);
+ free(buf.data);
+
+ if (!tg_record_id) {
+ error("Unable to register AVRCP target service record");
+ return -1;
+ }
+
+ if (avrcp_ct_record(&buf) < 0) {
+ error("Unable to allocate new service record");
+ return -1;
+ }
+
+ ct_record_id = add_service_record(conn, &buf);
+ free(buf.data);
+
+ if (!ct_record_id) {
+ error("Unable to register AVRCP controller service record");
+ return -1;
+ }
+
+ avctp_server = avctp_server_socket();
+ if (!avctp_server)
+ return -1;
+
+ g_io_add_watch(avctp_server, G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL,
+ (GIOFunc) avctp_server_cb, NULL);
+
+ return 0;
+}
+
+void control_exit(void)
+{
+ if (!avctp_server)
+ return;
+
+ g_io_channel_close(avctp_server);
+ g_io_channel_unref(avctp_server);
+ avctp_server = NULL;
+
+ remove_service_record(connection, ct_record_id);
+ ct_record_id = 0;
+
+ remove_service_record(connection, ct_record_id);
+ ct_record_id = 0;
+
+ dbus_connection_unref(connection);
+ connection = NULL;
+}
+
diff --git a/audio/control.h b/audio/control.h
new file mode 100644
index 00000000..79d66ec7
--- /dev/null
+++ b/audio/control.h
@@ -0,0 +1,27 @@
+/*
+ *
+ * BlueZ - Bluetooth protocol stack for Linux
+ *
+ * Copyright (C) 2007 Marcel Holtmann <marcel@holtmann.org>
+ * Copyright (C) 2007 Nokia Corporation
+ *
+ * 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
+ *
+ */
+
+#define AUDIO_CONTROL_INTERFACE "org.bluez.audio.Control"
+
+int control_init(DBusConnection *conn);
+void control_exit(void);
diff --git a/audio/manager.c b/audio/manager.c
index f5a67cac..2b628544 100644
--- a/audio/manager.c
+++ b/audio/manager.c
@@ -59,6 +59,7 @@
#include "headset.h"
#include "gateway.h"
#include "sink.h"
+#include "control.h"
#include "manager.h"
typedef enum {
@@ -224,6 +225,9 @@ static gboolean server_is_enabled(uint16_t svc)
break;
case AUDIO_SINK_SVCLASS_ID:
return enabled->sink;
+ case AV_REMOTE_TARGET_SVCLASS_ID:
+ case AV_REMOTE_SVCLASS_ID:
+ return enabled->control;
default:
ret = FALSE;
break;
@@ -1617,6 +1621,9 @@ int audio_init(DBusConnection *conn, struct enabled_interfaces *enable,
if (a2dp_init(conn, sources, sinks) < 0)
goto failed;
+ if (enable->control && control_init(conn) < 0)
+ goto failed;
+
if (!dbus_connection_register_interface(conn, AUDIO_MANAGER_PATH,
AUDIO_MANAGER_INTERFACE,
manager_methods,