/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2012 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
#define _GNU_SOURCE
#include <stdio.h>
#include <errno.h>
#include <ctype.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <sys/signalfd.h>
#include <glib.h>
#include "gdbus/gdbus.h"
#define IAP_PATH "/org/bluez/iap"
#define IAP_UUID "00000000-deca-fade-deca-deafdecacafe"
#define IAP_RECORD \
"<?xml version=\"1.0\" encoding=\"UTF-8\" ?> \
<record> \
<attribute id=\"0x0001\"> \
<sequence> \
<uuid value=\"%s\" /> \
</sequence> \
</attribute> \
<attribute id=\"0x0002\"> \
<uint32 value=\"0x00000000\" /> \
</attribute> \
<attribute id=\"0x0004\"> \
<sequence> \
<sequence> \
<uuid value=\"0x0100\" /> \
</sequence> \
<sequence> \
<uuid value=\"0x0003\" /> \
<uint8 value=\"0x%02x\" /> \
</sequence> \
</sequence> \
</attribute> \
<attribute id=\"0x0005\"> \
<sequence> \
<uuid value=\"0x1002\" /> \
</sequence> \
</attribute> \
<attribute id=\"0x0006\"> \
<sequence> \
<uint16 value=\"0x656e\" /> \
<uint16 value=\"0x006a\" /> \
<uint16 value=\"0x0100\" /> \
<uint16 value=\"0x6672\" /> \
<uint16 value=\"0x006a\" /> \
<uint16 value=\"0x0110\" /> \
<uint16 value=\"0x6465\" /> \
<uint16 value=\"0x006a\" /> \
<uint16 value=\"0x0120\" /> \
<uint16 value=\"0x6a61\" /> \
<uint16 value=\"0x006a\" /> \
<uint16 value=\"0x0130\" /> \
</sequence> \
</attribute> \
<attribute id=\"0x0008\"> \
<uint8 value=\"0xff\" /> \
</attribute> \
<attribute id=\"0x0009\"> \
<sequence> \
<sequence> \
<uuid value=\"0x1101\" /> \
<uint16 value=\"0x0100\" /> \
</sequence> \
</sequence> \
</attribute> \
<attribute id=\"0x0100\"> \
<text value=\"Wireless iAP\" /> \
</attribute> \
</record>"
static GMainLoop *main_loop;
static guint iap_source = 0;
static gboolean iap_handler(GIOChannel *channel, GIOCondition condition,
gpointer user_data)
{
unsigned char buf[512];
ssize_t len;
int fd;
if (condition & (G_IO_NVAL | G_IO_ERR | G_IO_HUP)) {
iap_source = 0;
return FALSE;
}
fd = g_io_channel_unix_get_fd(channel);
len = read(fd, buf, sizeof(buf));
if (len < 0) {
iap_source = 0;
return FALSE;
}
return TRUE;
}
static guint create_source(int fd, GIOFunc func)
{
GIOChannel *channel;
guint source;
channel = g_io_channel_unix_new(fd);
g_io_channel_set_close_on_unref(channel, TRUE);
g_io_channel_set_encoding(channel, NULL, NULL);
g_io_channel_set_buffered(channel, FALSE);
source = g_io_add_watch(channel,
G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL, func, NULL);
g_io_channel_unref(channel);
return source;
}
static void remove_source(const char *path)
{
if (iap_source > 0) {
g_source_remove(iap_source);
iap_source = 0;
}
}
static DBusMessage *release_profile(DBusConnection *conn,
DBusMessage *msg, void *user_data)
{
g_print("Profile released\n");
remove_source(IAP_PATH);
return dbus_message_new_method_return(msg);
}
static DBusMessage *new_connection(DBusConnection *conn,
DBusMessage *msg, void *user_data)
{
const char *path, *device;
int fd;
g_print("New connection\n");
path = dbus_message_get_path(msg);
dbus_message_get_args(msg, NULL, DBUS_TYPE_OBJECT_PATH, &device,
DBUS_TYPE_UNIX_FD, &fd, DBUS_TYPE_INVALID);
g_print(" from %s\n", path);
g_print(" for device %s with fd %d\n", device, fd);
if (iap_source == 0)
iap_source = create_source(fd, iap_handler);
else
close(fd);
return dbus_message_new_method_return(msg);
}
static DBusMessage *request_disconnection(DBusConnection *conn,
DBusMessage *msg, void *user_data)
{
DBusMessageIter iter;
const char *path, *device;
g_print("Request disconnection\n");
path = dbus_message_get_path(msg);
dbus_message_iter_init(msg, &iter);
dbus_message_iter_get_basic(&iter, &device);
g_print(" from %s\n", path);
g_print(" for device %s\n", device);
remove_source(path);
return dbus_message_new_method_return(msg);
}
static DBusMessage *cancel_request(DBusConnection *conn,
DBusMessage *msg, void *user_data)
{
const char *path;
g_print("Request canceled\n");
path = dbus_message_get_path(msg);
g_print(" from %s\n", path);
remove_source(path);
return dbus_message_new_method_return(msg);
}
static const GDBusMethodTable methods[] = {
{ GDBUS_METHOD("Release", NULL, NULL, release_profile) },
{ GDBUS_METHOD("NewConnection",
GDBUS_ARGS({ "device", "o" },
{ "fd", "h"}, { "opts", "a{sv}"}),
NULL, new_connection) },
{ GDBUS_METHOD("RequestDisconnection",
GDBUS_ARGS({ "device", "o" }),
NULL, request_disconnection) },
{ GDBUS_METHOD("Cancel", NULL, NULL, cancel_request) },
{ }
};
static void register_profile_setup(DBusMessageIter *iter, void *user_data)
{
const char *path = IAP_PATH;
const char *uuid = IAP_UUID;
DBusMessageIter dict, entry, value;
dbus_uint16_t channel;
char *record;
const char *str;
dbus_message_iter_append_basic(iter, DBUS_TYPE_OBJECT_PATH, &path);
dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING, &uuid);
dbus_message_iter_open_container(iter, DBUS_TYPE_ARRAY,
DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
DBUS_TYPE_STRING_AS_STRING
DBUS_TYPE_VARIANT_AS_STRING
DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &dict);
dbus_message_iter_open_container(&dict, DBUS_TYPE_DICT_ENTRY,
NULL, &entry);
str = "Role";
dbus_message_iter_append_basic(&entry, DBUS_TYPE_STRING, &str);
dbus_message_iter_open_container(&entry, DBUS_TYPE_VARIANT,
DBUS_TYPE_STRING_AS_STRING, &value);
str = "server";
dbus_message_iter_append_basic(&value, DBUS_TYPE_STRING, &str);
dbus_message_iter_close_container(&entry, &value);
dbus_message_iter_close_container(&dict, &entry);
dbus_message_iter_open_container(&dict, DBUS_TYPE_DICT_ENTRY,
NULL, &entry);
str = "Channel";
dbus_message_iter_append_basic(&entry, DBUS_TYPE_STRING, &str);
dbus_message_iter_open_container(&entry, DBUS_TYPE_VARIANT,
DBUS_TYPE_UINT16_AS_STRING, &value);
channel = 23;
dbus_message_iter_append_basic(&value, DBUS_TYPE_UINT16, &channel);
dbus_message_iter_close_container(&entry, &value);
dbus_message_iter_close_container(&dict, &entry);
dbus_message_iter_open_container(&dict, DBUS_TYPE_DICT_ENTRY,
NULL, &entry);
str = "ServiceRecord";
dbus_message_iter_append_basic(&entry, DBUS_TYPE_STRING, &str);
dbus_message_iter_open_container(&entry, DBUS_TYPE_VARIANT,
DBUS_TYPE_STRING_AS_STRING, &value);
record = g_strdup_printf(IAP_RECORD, IAP_UUID, channel);
dbus_message_iter_append_basic(&value, DBUS_TYPE_STRING, &record);
g_free(record);
dbus_message_iter_close_container(&entry, &value);
dbus_message_iter_close_container(&dict, &entry);
dbus_message_iter_close_container(iter, &dict);
}
static void register_profile_reply(DBusMessage *message, void *user_data)
{
DBusError error;
dbus_error_init(&error);
if (dbus_set_error_from_message(&error, message) == TRUE) {
g_print("Failed to register profile\n");
return;
}
g_print("Profile registered\n");
}
static void connect_handler(DBusConnection *connection, void *user_data)
{
GDBusClient *client = user_data;
GDBusProxy *proxy;
g_print("Bluetooth connected\n");
proxy = g_dbus_proxy_new(client, "/org/bluez",
"org.bluez.ProfileManager1");
if (!proxy)
return;
g_dbus_register_interface(connection, IAP_PATH,
"org.bluez.Profile1",
methods, NULL, NULL, NULL, NULL);
g_dbus_proxy_method_call(proxy, "RegisterProfile",
register_profile_setup,
register_profile_reply, NULL, NULL);
g_dbus_proxy_unref(proxy);
}
static void disconnect_handler(DBusConnection *connection, void *user_data)
{
g_print("Bluetooth disconnected\n");
g_dbus_unregister_interface(connection, IAP_PATH,
"org.bluez.Profile1");
}
static gboolean signal_handler(GIOChannel *channel, GIOCondition condition,
gpointer user_data)
{
static unsigned int __terminated = 0;
struct signalfd_siginfo si;
ssize_t result;
int fd;
if (condition & (G_IO_NVAL | G_IO_ERR | G_IO_HUP)) {
g_main_loop_quit(main_loop);
return FALSE;
}
fd = g_io_channel_unix_get_fd(channel);
result = read(fd, &si, sizeof(si));
if (result != sizeof(si))
return FALSE;
switch (si.ssi_signo) {
case SIGINT:
case SIGTERM:
if (__terminated == 0)
g_main_loop_quit(main_loop);
__terminated = 1;
break;
}
return TRUE;
}
static guint setup_signalfd(void)
{
GIOChannel *channel;
guint source;
sigset_t mask;
int fd;
sigemptyset(&mask);
sigaddset(&mask, SIGINT);
sigaddset(&mask, SIGTERM);
if (sigprocmask(SIG_BLOCK, &mask, NULL) < 0) {
perror("Failed to set signal mask");
return 0;
}
fd = signalfd(-1, &mask, 0);
if (fd < 0) {
perror("Failed to create signal descriptor");
return 0;
}
channel = g_io_channel_unix_new(fd);
g_io_channel_set_close_on_unref(channel, TRUE);
g_io_channel_set_encoding(channel, NULL, NULL);
g_io_channel_set_buffered(channel, FALSE);
source = g_io_add_watch(channel,
G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL,
signal_handler, NULL);
g_io_channel_unref(channel);
return source;
}
static gboolean option_version = FALSE;
static GOptionEntry options[] = {
{ "version", 'v', 0, G_OPTION_ARG_NONE, &option_version,
"Show version information and exit" },
{ NULL },
};
int main(int argc, char *argv[])
{
GOptionContext *context;
GError *error = NULL;
DBusConnection *dbus_conn;
GDBusClient *client;
guint signal;
context = g_option_context_new(NULL);
g_option_context_add_main_entries(context, options, NULL);
if (g_option_context_parse(context, &argc, &argv, &error) == FALSE) {
if (error != NULL) {
g_printerr("%s\n", error->message);
g_error_free(error);
} else
g_printerr("An unknown error occurred\n");
exit(1);
}
g_option_context_free(context);
if (option_version == TRUE) {
g_print("%s\n", VERSION);
exit(0);
}
main_loop = g_main_loop_new(NULL, FALSE);
dbus_conn = g_dbus_setup_bus(DBUS_BUS_SYSTEM, NULL, NULL);
signal = setup_signalfd();
client = g_dbus_client_new(dbus_conn, "org.bluez", "/org/bluez");
g_dbus_client_set_connect_watch(client, connect_handler, client);
g_dbus_client_set_disconnect_watch(client, disconnect_handler, NULL);
g_main_loop_run(main_loop);
g_dbus_client_unref(client);
g_source_remove(signal);
dbus_connection_unref(dbus_conn);
g_main_loop_unref(main_loop);
return 0;
}