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/*******************************************************************************
* libproxy - A library for proxy configuration
* Copyright (C) 2010 Intel Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
******************************************************************************/
#include "../extension_config.hpp"
using namespace libproxy;
#include <string.h>
#include <dbus/dbus.h>
class pacrunner_config_extension : public config_extension {
public:
pacrunner_config_extension() {
this->conn = NULL;
}
~pacrunner_config_extension() {
if (this->conn) dbus_connection_close(this->conn);
}
class scoped_dbus_message {
public:
scoped_dbus_message(DBusMessage *msg) {
this->msg = msg;
}
~scoped_dbus_message() {
if (this->msg)
dbus_message_unref(msg);
}
private:
DBusMessage *msg;
};
vector<url> get_config(const url &dest) {
// Make sure we have a valid connection with a proper match
DBusConnection *conn = this->conn;
vector<url> response;
if (!conn || !dbus_connection_get_is_connected(conn))
{
// If the connection was disconnected,
// close it an clear the queue
if (conn)
{
dbus_connection_close(conn);
dbus_connection_read_write(conn, 0);
for (DBusMessage *msg=NULL ; (msg = dbus_connection_pop_message(conn)) ; dbus_message_unref(msg)) {};
}
// Create a new connections
conn = dbus_bus_get_private(DBUS_BUS_SYSTEM, NULL);
this->conn = conn;
if (!conn)
throw runtime_error("Unable to set up DBus connection");
// If connection was successful, set it up
dbus_connection_set_exit_on_disconnect(conn, false);
}
DBusMessage *msg, *reply;
msg = dbus_message_new_method_call("org.pacrunner",
"/org/pacrunner/client",
"org.pacrunner.Client",
"FindProxyForURL");
if (!msg)
throw runtime_error("Unable to create PacRunner DBus call");
string dest_str = dest.to_string();
string dest_host = dest.get_host();
const char *dest_cstr = dest_str.c_str();
const char *dest_host_cstr = dest_host.c_str();
dbus_message_append_args(msg, DBUS_TYPE_STRING, &dest_cstr,
DBUS_TYPE_STRING, &dest_host_cstr,
DBUS_TYPE_INVALID);
reply = dbus_connection_send_with_reply_and_block(conn, msg, -1, NULL);
dbus_message_unref(msg);
if (!reply)
throw runtime_error("Failed to get DBus response from PacRunner");
scoped_dbus_message smsg(reply);
char *str = NULL;
dbus_message_get_args(reply, NULL, DBUS_TYPE_STRING, &str, DBUS_TYPE_INVALID);
if (!str || !strlen(str) || !strcasecmp(str, "DIRECT"))
response.push_back(url("direct://"));
else if (!strncasecmp(str, "PROXY ", 6))
response.push_back(url("http://" + string(str + 6)));
else if (!strncasecmp(str, "SOCKS ", 6))
response.push_back(url("socks://" + string(str + 6)));
else if (!strncasecmp(str, "SOCKS4 ", 7))
response.push_back(url("socks4://" + string(str + 7)));
else if (!strncasecmp(str, "SOCKS5 ", 7))
response.push_back(url("socks5://" + string(str + 7)));
else {
throw runtime_error("Unrecognised proxy response from PacRunner: " + string(str));
}
return response;
}
private:
DBusConnection *conn;
};
#define TEST_TIMEOUT_MS 100
static bool is_pacrunner_available(void)
{
DBusMessage *msg, *reply;
DBusConnection* system;
dbus_bool_t owned;
bool found = false;
const char *name = "org.pacrunner";
msg = dbus_message_new_method_call("org.freedesktop.DBus",
"/org/freedesktop/DBus",
"org.freedesktop.DBus",
"NameHasOwner");
if (!msg)
return false;
dbus_message_append_args(msg, DBUS_TYPE_STRING, &name,
DBUS_TYPE_INVALID);
system = dbus_bus_get_private(DBUS_BUS_SYSTEM, NULL);
if (!system)
goto out_msg;
reply = dbus_connection_send_with_reply_and_block(system, msg,
TEST_TIMEOUT_MS,
NULL);
if (!reply)
goto out_sys;
if (dbus_message_get_args(reply, NULL, DBUS_TYPE_BOOLEAN, &owned,
DBUS_TYPE_INVALID))
found = owned;
out_reply:
dbus_message_unref(reply);
out_sys:
dbus_connection_close(system);
dbus_connection_unref(system);
out_msg:
dbus_message_unref(msg);
return found;
}
MM_MODULE_INIT_EZ(pacrunner_config_extension, is_pacrunner_available(),
NULL, NULL);
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