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authorMarcel Holtmann <marcel@holtmann.org>2007-01-13 23:30:30 +0000
committerMarcel Holtmann <marcel@holtmann.org>2007-01-13 23:30:30 +0000
commitc6e4778e9cbc61e77ef9d8721bc04343af11d7e9 (patch)
tree2806d3eb8190b3384ddf388f1174f9aa15e3b438 /sdpd/server.c
parentf238b6612fcbe115a20279a2e7509de4e86f013e (diff)
Turn it into a full SDP server library
Diffstat (limited to 'sdpd/server.c')
-rw-r--r--sdpd/server.c245
1 files changed, 245 insertions, 0 deletions
diff --git a/sdpd/server.c b/sdpd/server.c
new file mode 100644
index 00000000..67622e60
--- /dev/null
+++ b/sdpd/server.c
@@ -0,0 +1,245 @@
+/*
+ *
+ * BlueZ - Bluetooth protocol stack for Linux
+ *
+ * Copyright (C) 2001-2002 Nokia Corporation
+ * Copyright (C) 2002-2003 Maxim Krasnyansky <maxk@qualcomm.com>
+ * Copyright (C) 2002-2007 Marcel Holtmann <marcel@holtmann.org>
+ * Copyright (C) 2002-2003 Stephen Crane <steve.crane@rococosoft.com>
+ *
+ *
+ * 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 <unistd.h>
+#include <sys/stat.h>
+#include <sys/socket.h>
+
+#include <bluetooth/bluetooth.h>
+#include <bluetooth/l2cap.h>
+#include <bluetooth/sdp.h>
+#include <bluetooth/sdp_lib.h>
+
+#include <sys/un.h>
+#include <netinet/in.h>
+
+#include "glib-ectomy.h"
+#include "logging.h"
+#include "sdpd.h"
+
+static GIOChannel *l2cap_io, *unix_io;
+
+static int l2cap_sock, unix_sock;
+
+/*
+ * SDP server initialization on startup includes creating the
+ * l2cap and unix sockets over which discovery and registration clients
+ * access us respectively
+ */
+static int init_server(uint16_t mtu, int master, int public)
+{
+ struct l2cap_options opts;
+ struct sockaddr_l2 l2addr;
+ struct sockaddr_un unaddr;
+ socklen_t optlen;
+
+ /* Register the public browse group root */
+ register_public_browse_group(public);
+
+ /* Register the SDP server's service record */
+ register_server_service(public);
+
+ /* Create L2CAP socket */
+ l2cap_sock = socket(PF_BLUETOOTH, SOCK_SEQPACKET, BTPROTO_L2CAP);
+ if (l2cap_sock < 0) {
+ error("opening L2CAP socket: %s", strerror(errno));
+ return -1;
+ }
+
+ memset(&l2addr, 0, sizeof(l2addr));
+ l2addr.l2_family = AF_BLUETOOTH;
+ bacpy(&l2addr.l2_bdaddr, BDADDR_ANY);
+ l2addr.l2_psm = htobs(SDP_PSM);
+
+ if (bind(l2cap_sock, (struct sockaddr *) &l2addr, sizeof(l2addr)) < 0) {
+ error("binding L2CAP socket: %s", strerror(errno));
+ return -1;
+ }
+
+ if (master) {
+ int opt = L2CAP_LM_MASTER;
+ if (setsockopt(l2cap_sock, SOL_L2CAP, L2CAP_LM, &opt, sizeof(opt)) < 0) {
+ error("setsockopt: %s", strerror(errno));
+ return -1;
+ }
+ }
+
+ if (mtu > 0) {
+ memset(&opts, 0, sizeof(opts));
+ optlen = sizeof(opts);
+
+ if (getsockopt(l2cap_sock, SOL_L2CAP, L2CAP_OPTIONS, &opts, &optlen) < 0) {
+ error("getsockopt: %s", strerror(errno));
+ return -1;
+ }
+
+ opts.imtu = mtu;
+
+ if (setsockopt(l2cap_sock, SOL_L2CAP, L2CAP_OPTIONS, &opts, sizeof(opts)) < 0) {
+ error("setsockopt: %s", strerror(errno));
+ return -1;
+ }
+ }
+
+ listen(l2cap_sock, 5);
+
+ /* Create local Unix socket */
+ unix_sock = socket(PF_UNIX, SOCK_STREAM, 0);
+ if (unix_sock < 0) {
+ error("opening UNIX socket: %s", strerror(errno));
+ return -1;
+ }
+
+ memset(&unaddr, 0, sizeof(unaddr));
+ unaddr.sun_family = AF_UNIX;
+ strcpy(unaddr.sun_path, SDP_UNIX_PATH);
+
+ unlink(unaddr.sun_path);
+
+ if (bind(unix_sock, (struct sockaddr *) &unaddr, sizeof(unaddr)) < 0) {
+ error("binding UNIX socket: %s", strerror(errno));
+ return -1;
+ }
+
+ listen(unix_sock, 5);
+
+ chmod(SDP_UNIX_PATH, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH);
+
+ return 0;
+}
+
+static gboolean io_session_event(GIOChannel *chan, GIOCondition cond, gpointer data)
+{
+ sdp_pdu_hdr_t hdr;
+ uint8_t *buf;
+ int sk, len, size;
+
+ if (cond & (G_IO_HUP | G_IO_ERR)) {
+ g_io_channel_unref(chan);
+ return FALSE;
+ }
+
+ sk = g_io_channel_unix_get_fd(chan);
+
+ len = recv(sk, &hdr, sizeof(sdp_pdu_hdr_t), MSG_PEEK);
+ if (len <= 0) {
+ sdp_svcdb_collect_all(sk);
+ return FALSE;
+ }
+
+ size = sizeof(sdp_pdu_hdr_t) + ntohs(hdr.plen);
+ buf = malloc(size);
+ if (!buf)
+ return TRUE;
+
+ len = recv(sk, buf, size, 0);
+ if (len <= 0) {
+ sdp_svcdb_collect_all(sk);
+ return FALSE;
+ }
+
+ handle_request(sk, buf, len);
+
+ return TRUE;
+}
+
+static gboolean io_accept_event(GIOChannel *chan, GIOCondition cond, gpointer data)
+{
+ GIOChannel *io;
+ int nsk;
+
+ if (cond & (G_IO_HUP | G_IO_ERR)) {
+ g_io_channel_unref(chan);
+ return FALSE;
+ }
+
+ if (data == &l2cap_sock) {
+ struct sockaddr_l2 addr;
+ socklen_t len = sizeof(addr);
+
+ nsk = accept(l2cap_sock, (struct sockaddr *) &addr, &len);
+ } else if (data == &unix_sock) {
+ struct sockaddr_un addr;
+ socklen_t len = sizeof(addr);
+
+ nsk = accept(unix_sock, (struct sockaddr *) &addr, &len);
+ } else
+ return FALSE;
+
+ if (nsk < 0) {
+ error("Can't accept connection: %s", strerror(errno));
+ return TRUE;
+ }
+
+ io = g_io_channel_unix_new(nsk);
+ g_io_channel_set_close_on_unref(io, TRUE);
+
+ g_io_add_watch(io, G_IO_IN, io_session_event, data);
+
+ return TRUE;
+}
+
+int start_sdp_server(uint16_t mtu, uint32_t flags)
+{
+ int master = flags & SDP_SERVER_MASTER;
+ int public = flags & SDP_SERVER_PUBLIC;
+
+ info("Starting SDP server");
+
+ if (init_server(mtu, master, public) < 0) {
+ error("Server initialization failed");
+ return -1;
+ }
+
+ l2cap_io = g_io_channel_unix_new(l2cap_sock);
+ g_io_channel_set_close_on_unref(l2cap_io, TRUE);
+
+ g_io_add_watch(l2cap_io, G_IO_IN, io_accept_event, &l2cap_sock);
+
+ unix_io = g_io_channel_unix_new(unix_sock);
+ g_io_channel_set_close_on_unref(unix_io, TRUE);
+
+ g_io_add_watch(unix_io, G_IO_IN, io_accept_event, &unix_sock);
+
+ return 0;
+}
+
+void stop_sdp_server(void)
+{
+ info("Stopping SDP server");
+
+ sdp_svcdb_reset();
+
+ g_io_channel_unref(unix_io);
+
+ g_io_channel_unref(l2cap_io);
+}