added bt_discover_services function

2 files changed, 143 insertions, 4 deletions

diff --git a/common/glib-helper.c b/common/glib-helper.c
index 35261188..b97aa82c 100644
--- a/common/glib-helper.c
+++ b/common/glib-helper.c
@@ -29,14 +29,147 @@
 #include <sys/socket.h>
 
 #include <bluetooth/bluetooth.h>
+#include <bluetooth/sdp.h>
+#include <bluetooth/sdp_lib.h>
 
 #include <glib.h>
 
 #include "glib-helper.h"
 
-int bt_discover_services(const bdaddr_t src, const bdaddr_t dst,
-				void (*callback) (void), void *user_data,
-					void (*destroy) (void *user_data))
+struct search_context {
+	bdaddr_t		src;
+	bdaddr_t		dst;
+	sdp_session_t		*session;
+	bt_callback_t		cb;
+	bt_destroy_t		destroy;
+	gpointer		user_data;
+};
+
+static void search_context_cleanup(struct search_context *ctxt)
+{
+	if (ctxt->destroy)
+		ctxt->destroy(ctxt->user_data);
+	sdp_close(ctxt->session);
+	g_free(ctxt);
+}
+
+static void search_completed_cb(uint8_t type, uint16_t status,
+			uint8_t *rsp, size_t size, void *user_data)
+{
+	struct search_context *ctxt = user_data;
+	sdp_list_t *recs = NULL;
+
+	/* FIXME: Extract the records */
+
+	ctxt->cb(ctxt->user_data, recs, 0);
+
+	search_context_cleanup(ctxt);
+}
+
+static gboolean search_process_cb(GIOChannel *chan,
+			GIOCondition cond, void *user_data)
+{
+	struct search_context *ctxt = user_data;
+	int err = 0;
+
+	if (cond & (G_IO_ERR | G_IO_HUP | G_IO_NVAL)) {
+		err = EIO;
+		goto failed;
+	}
+
+	if (sdp_process(ctxt->session) < 0)
+		goto failed;
+
+	return TRUE;
+
+failed:
+	if (err) {
+		ctxt->cb(ctxt->user_data, NULL, -err);
+		search_context_cleanup(ctxt);
+	}
+
+	return FALSE;
+}
+
+static gboolean connect_watch(GIOChannel *chan, GIOCondition cond, gpointer user_data)
 {
-	return -EIO;
+	struct search_context *ctxt = user_data;
+	sdp_list_t *search, *attrids;
+	uint32_t range = 0x0000ffff;
+	uuid_t uuid;
+	socklen_t len;
+	int sk, err = 0;
+
+	sk = g_io_channel_unix_get_fd(chan);
+
+	len = sizeof(err);
+	if (getsockopt(sk, SOL_SOCKET, SO_ERROR, &err, &len) < 0) {
+		err = errno;
+		goto failed;
+	}
+
+	if (err != 0)
+		goto failed;
+
+	if (sdp_set_notify(ctxt->session, search_completed_cb, ctxt) < 0) {
+		err = EIO;
+		goto failed;
+	}
+
+	sdp_uuid16_create(&uuid, PUBLIC_BROWSE_GROUP);
+	search = sdp_list_append(NULL, &uuid);
+	attrids = sdp_list_append(NULL, &range);
+	if (sdp_service_search_attr_async(ctxt->session,
+				search, SDP_ATTR_REQ_RANGE, attrids) < 0) {
+		sdp_list_free(attrids, NULL);
+		sdp_list_free(search, NULL);
+		err = EIO;
+		goto failed;
+	}
+
+	sdp_list_free(attrids, NULL);
+	sdp_list_free(search, NULL);
+
+	/* Set callback responsible for update the internal SDP transaction */
+	g_io_add_watch(chan, G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL,
+			search_process_cb, ctxt);
+	return FALSE;
+
+failed:
+	ctxt->cb(ctxt->user_data, NULL, -err);
+	search_context_cleanup(ctxt);
+
+	return FALSE;
+}
+
+int bt_discover_services(const bdaddr_t *src, const bdaddr_t *dst,
+		bt_callback_t cb, void *user_data, bt_destroy_t destroy)
+{
+	struct search_context *ctxt;
+	sdp_session_t *s;
+	GIOChannel *chan;
+
+	if (!cb)
+		return -EINVAL;
+
+	s = sdp_connect(src, dst, SDP_NON_BLOCKING);
+	if (!s)
+		return -EIO;
+
+	ctxt = g_malloc0(sizeof(struct search_context));
+	if (!ctxt)
+		return -ENOMEM;
+
+	bacpy(&ctxt->src, src);
+	bacpy(&ctxt->dst, dst);
+	ctxt->session	= s;
+	ctxt->cb	= cb;
+	ctxt->destroy	= destroy;
+	ctxt->user_data	= user_data;
+
+	chan = g_io_channel_unix_new(sdp_get_socket(s));
+	g_io_add_watch(chan, G_IO_OUT, connect_watch, ctxt);
+	g_io_channel_unref(chan);
+
+	return 0;
 }
diff --git a/common/glib-helper.h b/common/glib-helper.h
index 71377516..7426a6ad 100644
--- a/common/glib-helper.h
+++ b/common/glib-helper.h
@@ -20,3 +20,9 @@
  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  *
  */
+
+typedef void (*bt_callback_t) (gpointer user_data, sdp_list_t *recs, int err);
+typedef void (*bt_destroy_t) (gpointer user_data);
+
+int bt_discover_services(const bdaddr_t *src, const bdaddr_t *dst,
+		bt_callback_t cb, void *user_data, bt_destroy_t destroy);