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/*
*
* oFono - Open Source Telephony
*
* Copyright (C) 2008-2011 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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 <string.h>
#include <errno.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <glib.h>
#define OFONO_API_SUBJECT_TO_CHANGE
#include <ofono/plugin.h>
#include <ofono/log.h>
#include <ofono/modem.h>
#include <ofono/emulator.h>
#include "ofono.h"
#define DUN_PORT 12346
#define HFP_PORT 12347
static unsigned int modemwatch_id;
guint server_watch;
static GList *modems;
static gboolean on_socket_connected(GIOChannel *chan, GIOCondition cond,
gpointer user)
{
struct sockaddr saddr;
unsigned int len = sizeof(saddr);
int fd;
struct ofono_emulator *em;
struct ofono_modem *modem;
if (cond != G_IO_IN)
return FALSE;
fd = accept(g_io_channel_unix_get_fd(chan), &saddr, &len);
if (fd == -1)
return FALSE;
/* Pick the first powered modem */
modem = modems->data;
DBG("Picked modem %p for emulator", modem);
em = ofono_emulator_create(modem, GPOINTER_TO_INT(user));
if (em == NULL)
close(fd);
else
ofono_emulator_register(em, fd);
return TRUE;
}
static gboolean create_tcp(short port, enum ofono_emulator_type type)
{
struct sockaddr_in addr;
int sk;
int reuseaddr = 1;
GIOChannel *server;
sk = socket(PF_INET, SOCK_STREAM, 0);
if (sk < 0)
return FALSE;
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = INADDR_ANY;
addr.sin_port = htons(port);
setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, &reuseaddr, sizeof(reuseaddr));
if (bind(sk, (struct sockaddr *) &addr, sizeof(struct sockaddr)) < 0)
goto err;
if (listen(sk, 1) < 0)
goto err;
server = g_io_channel_unix_new(sk);
g_io_channel_set_close_on_unref(server, TRUE);
server_watch = g_io_add_watch_full(server, G_PRIORITY_DEFAULT,
G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL,
on_socket_connected, GINT_TO_POINTER(type),
NULL);
g_io_channel_unref(server);
DBG("Created server_watch: %u", server_watch);
return TRUE;
err:
close(sk);
return FALSE;
}
static void powered_watch(struct ofono_modem *modem, gboolean powered,
void *user)
{
if (powered == FALSE) {
DBG("Removing modem %p from the list", modem);
modems = g_list_remove(modems, modem);
if (modems == NULL && server_watch > 0) {
DBG("Removing server watch: %u", server_watch);
g_source_remove(server_watch);
server_watch = 0;
}
} else {
DBG("Adding modem %p to the list", modem);
modems = g_list_append(modems, modem);
if (modems->next == NULL) {
create_tcp(DUN_PORT, OFONO_EMULATOR_TYPE_DUN);
create_tcp(HFP_PORT, OFONO_EMULATOR_TYPE_HFP);
}
}
}
static void modem_watch(struct ofono_modem *modem, gboolean added, void *user)
{
DBG("modem: %p, added: %d", modem, added);
if (added == FALSE) {
DBG("Removing modem %p from the list", modem);
modems = g_list_remove(modems, modem);
return;
}
if (ofono_modem_get_powered(modem) == TRUE) {
DBG("Adding modem %p to the list", modem);
modems = g_list_append(modems, modem);
if (modems->next == NULL) {
create_tcp(DUN_PORT, OFONO_EMULATOR_TYPE_DUN);
create_tcp(HFP_PORT, OFONO_EMULATOR_TYPE_HFP);
}
}
__ofono_modem_add_powered_watch(modem, powered_watch, NULL, NULL);
}
static void call_modemwatch(struct ofono_modem *modem, void *user)
{
modem_watch(modem, TRUE, user);
}
static int example_emulator_init(void)
{
DBG("");
modemwatch_id = __ofono_modemwatch_add(modem_watch, NULL, NULL);
__ofono_modem_foreach(call_modemwatch, NULL);
return 0;
}
static void example_emulator_exit(void)
{
DBG("");
__ofono_modemwatch_remove(modemwatch_id);
g_list_free(modems);
if (server_watch)
g_source_remove(server_watch);
}
OFONO_PLUGIN_DEFINE(example_emulator, "Example AT Modem Emulator Plugin",
VERSION, OFONO_PLUGIN_PRIORITY_DEFAULT,
example_emulator_init, example_emulator_exit)
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