Return-Path: From: Vani-dineshbhai PATEL To: User Name , Luiz Augusto , Lucas De Marchi Cc: Vani , Joohi , Vani Subject: [PATCH BlueZ V3 3/5] AVRCP: Add browsing channel support Date: Wed, 8 Aug 2012 12:26:46 +0530 Message-ID: <1344409007-13601-1-git-send-email-vani.patel@stericsson.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-bluetooth-owner@vger.kernel.org List-ID: From: Vani Patel Implements browsing channel creation and release. --- audio/avctp.c | 234 ++++++++++++++++++++++++++++++++++++++++++++++++++++----- 1 files changed, 215 insertions(+), 19 deletions(-) diff --git a/audio/avctp.c b/audio/avctp.c index 33ca007..69bb6a8 100644 --- a/audio/avctp.c +++ b/audio/avctp.c @@ -41,6 +41,7 @@ #include #include #include +#include #include @@ -119,6 +120,7 @@ struct avctp_state_callback { struct avctp_server { bdaddr_t src; GIOChannel *control_io; + GIOChannel *browsing_io; GSList *sessions; }; @@ -137,9 +139,12 @@ struct avctp { int uinput; GIOChannel *control_io; + GIOChannel *browsing_io; guint control_io_id; + guint browsing_io_id; uint16_t control_mtu; + uint16_t browsing_mtu; uint8_t key_quirks[256]; GSList *handlers; @@ -326,6 +331,17 @@ static void avctp_disconnected(struct avctp *session) if (!session) return; + if (session->browsing_io) { + g_io_channel_shutdown(session->browsing_io, TRUE, NULL); + g_io_channel_unref(session->browsing_io); + session->browsing_io = NULL; + } + + if (session->browsing_io_id) { + g_source_remove(session->browsing_io_id); + session->browsing_io_id = 0; + } + if (session->control_io) { g_io_channel_shutdown(session->control_io, TRUE, NULL); g_io_channel_unref(session->control_io); @@ -432,6 +448,42 @@ static void handle_response(struct avctp *session, struct avctp_header *avctp, } } +static gboolean session_browsing_cb(GIOChannel *chan, GIOCondition cond, + gpointer data) +{ + struct avctp *session = data; + uint8_t *buf; + struct avctp_header *avctp; + int ret, sock; + + buf = (uint8_t *)malloc(session->browsing_mtu); + if (!(cond & G_IO_IN)) + return FALSE; + + sock = g_io_channel_unix_get_fd(session->browsing_io); + ret = read(sock, buf, session->browsing_mtu); + + if (ret <= 0) + goto failed; + + if ((unsigned int) ret < sizeof(struct avctp_header)) { + error("Too small AVRCP packet on browsing channel"); + goto failed; + } + + avctp = (struct avctp_header *) buf; + + if (avctp->packet_type != AVCTP_PACKET_SINGLE) + goto failed; + + free(buf); + return TRUE; + +failed: + free(buf); + return FALSE; +} + static gboolean session_cb(GIOChannel *chan, GIOCondition cond, gpointer data) { @@ -614,6 +666,47 @@ static void init_uinput(struct avctp *session) DBG("AVRCP: uinput initialized for %s", address); } +static void avctp_connect_browsing_cb(GIOChannel *chan, + GError *err, + gpointer data) +{ + struct avctp *session = data; + char address[18]; + uint16_t imtu; + GError *gerr = NULL; + + if (err) { + error("Browsing: %s", err->message); + g_io_channel_shutdown(chan, TRUE, NULL); + g_io_channel_unref(chan); + session->browsing_io = NULL; + return; + } + + bt_io_get(chan, BT_IO_L2CAP, &gerr, + BT_IO_OPT_DEST, &address, + BT_IO_OPT_IMTU, &imtu, + BT_IO_OPT_INVALID); + if (gerr) { + error("%s", gerr->message); + g_io_channel_shutdown(chan, TRUE, NULL); + g_io_channel_unref(chan); + session->browsing_io = NULL; + error("%s", gerr->message); + g_error_free(gerr); + return; + } + + if (!session->browsing_io) + session->browsing_io = g_io_channel_ref(chan); + + session->browsing_mtu = imtu; + + session->browsing_io_id = g_io_add_watch(chan, + G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL, + (GIOFunc) session_browsing_cb, session); +} + static void avctp_connect_cb(GIOChannel *chan, GError *err, gpointer data) { struct avctp *session = data; @@ -652,6 +745,32 @@ static void avctp_connect_cb(GIOChannel *chan, GError *err, gpointer data) (GIOFunc) session_cb, session); } +static void auth_browsing_cb(DBusError *derr, void *user_data) +{ + struct avctp *session = user_data; + GError *err = NULL; + + if (session->browsing_io_id) { + g_source_remove(session->browsing_io_id); + session->browsing_io_id = 0; + } + + if (derr && dbus_error_is_set(derr)) { + error("Browsing Access denied: %s", derr->message); + return; + } + + if (!bt_io_accept(session->browsing_io, avctp_connect_browsing_cb, + session, NULL, &err)) { + error("Browsing bt_io_accept: %s", err->message); + if (session && session->browsing_io) { + g_io_channel_unref(session->browsing_io); + session->browsing_io = NULL; + } + g_error_free(err); + } +} + static void auth_cb(DBusError *derr, void *user_data) { struct avctp *session = user_data; @@ -730,6 +849,65 @@ static struct avctp *avctp_get_internal(const bdaddr_t *src, return session; } +static void avctp_control_confirm(struct avctp *session, GIOChannel *chan, + struct audio_device *dev) +{ + if (session->control_io) { + error("Refusing unexpected connect from"); + goto drop; + } + + avctp_set_state(session, AVCTP_STATE_CONNECTING); + session->control_io = g_io_channel_ref(chan); + + if (audio_device_request_authorization(dev, AVRCP_TARGET_UUID, + auth_cb, session) < 0) + goto drop; + + session->control_io_id = g_io_add_watch(chan, G_IO_ERR | G_IO_HUP | + G_IO_NVAL, session_cb, session); + return; + +drop: + if (!session || !session->control_io) + g_io_channel_shutdown(chan, TRUE, NULL); + + if (session && session->control_io) + g_io_channel_unref(session->control_io); + + if (session) + avctp_set_state(session, AVCTP_STATE_DISCONNECTED); +} + +static void avctp_browsing_confirm(struct avctp *session, GIOChannel *chan, + struct audio_device *dev) +{ + + if (!session->control_io) { + error("Browsing: Refusing unexpected connect from"); + goto drop; + } + + if (session->browsing_io) { + error("Browsing channel already exists"); + goto drop; + } + + session->browsing_io = g_io_channel_ref(chan); + + if (audio_device_request_authorization(dev, AVRCP_TARGET_UUID, + auth_browsing_cb, session) < 0) + goto drop; + return; + +drop: + if (!session || !session->control_io || !session->browsing_io) + g_io_channel_shutdown(chan, TRUE, NULL); + + if (session && session->browsing_io) + g_io_channel_unref(session->browsing_io); +} + static void avctp_confirm_cb(GIOChannel *chan, gpointer data) { struct avctp *session; @@ -737,11 +915,13 @@ static void avctp_confirm_cb(GIOChannel *chan, gpointer data) char address[18]; bdaddr_t src, dst; GError *err = NULL; + uint16_t psm; bt_io_get(chan, BT_IO_L2CAP, &err, BT_IO_OPT_SOURCE_BDADDR, &src, BT_IO_OPT_DEST_BDADDR, &dst, BT_IO_OPT_DEST, address, + BT_IO_OPT_PSM, &psm, BT_IO_OPT_INVALID); if (err) { error("%s", err->message); @@ -772,40 +952,40 @@ static void avctp_confirm_cb(GIOChannel *chan, gpointer data) goto drop; } - if (session->control_io) { - error("Refusing unexpected connect from %s", address); - goto drop; + switch (psm) { + case AVCTP_CONTROL_PSM: + avctp_control_confirm(session, chan, dev); + break; + case AVCTP_BROWSING_PSM: + avctp_browsing_confirm(session, chan, dev); + break; } - avctp_set_state(session, AVCTP_STATE_CONNECTING); - session->control_io = g_io_channel_ref(chan); - - if (audio_device_request_authorization(dev, AVRCP_TARGET_UUID, - auth_cb, session) < 0) - goto drop; - - session->control_io_id = g_io_add_watch(chan, G_IO_ERR | G_IO_HUP | - G_IO_NVAL, session_cb, session); return; drop: - if (!session || !session->control_io) - g_io_channel_shutdown(chan, TRUE, NULL); - if (session) + if (session && session->browsing_io) + g_io_channel_unref(session->browsing_io); + + if (session && session->control_io) + g_io_channel_unref(session->control_io); + + if (session && psm == AVCTP_CONTROL_PSM) avctp_set_state(session, AVCTP_STATE_DISCONNECTED); } -static GIOChannel *avctp_server_socket(const bdaddr_t *src, gboolean master) +static GIOChannel *avctp_server_socket(const bdaddr_t *src, gboolean master, + uint8_t mode, uint16_t psm) { GError *err = NULL; GIOChannel *io; - io = bt_io_listen(BT_IO_L2CAP, NULL, avctp_confirm_cb, NULL, NULL, &err, BT_IO_OPT_SOURCE_BDADDR, src, - BT_IO_OPT_PSM, AVCTP_CONTROL_PSM, + BT_IO_OPT_PSM, psm, BT_IO_OPT_SEC_LEVEL, BT_IO_SEC_MEDIUM, BT_IO_OPT_MASTER, master, + BT_IO_OPT_MODE, mode, BT_IO_OPT_INVALID); if (!io) { error("%s", err->message); @@ -825,12 +1005,25 @@ int avctp_register(const bdaddr_t *src, gboolean master) server = g_new0(struct avctp_server, 1); - server->control_io = avctp_server_socket(src, master); + server->control_io = avctp_server_socket(src, master, L2CAP_MODE_BASIC, + AVCTP_CONTROL_PSM); if (!server->control_io) { g_free(server); return -1; } + server->browsing_io = avctp_server_socket(src, master, L2CAP_MODE_ERTM, + AVCTP_BROWSING_PSM); + if (!server->browsing_io) { + if (server->control_io) { + g_io_channel_shutdown(server->control_io, TRUE, NULL); + g_io_channel_unref(server->control_io); + server->control_io = NULL; + } + g_free(server); + return -1; + } + bacpy(&server->src, src); servers = g_slist_append(servers, server); @@ -862,6 +1055,9 @@ void avctp_unregister(const bdaddr_t *src) avctp_disconnected(server->sessions->data); servers = g_slist_remove(servers, server); + g_io_channel_shutdown(server->browsing_io, TRUE, NULL); + g_io_channel_unref(server->browsing_io); + server->browsing_io = NULL; g_io_channel_shutdown(server->control_io, TRUE, NULL); g_io_channel_unref(server->control_io); -- 1.7.5.4