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/*
* Copyright (C) 2013 Martin Willi
* Copyright (C) 2013 revosec AG
*
* 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. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* 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.
*/
#include "xpc_dispatch.h"
#include <xpc/xpc.h>
#include <daemon.h>
#include <processing/jobs/callback_job.h>
typedef struct private_xpc_dispatch_t private_xpc_dispatch_t;
/**
* Private data of an xpc_dispatch_t object.
*/
struct private_xpc_dispatch_t {
/**
* Public xpc_dispatch_t interface.
*/
xpc_dispatch_t public;
/**
* XPC service we offer
*/
xpc_connection_t service;
/**
* GCD queue for XPC events
*/
dispatch_queue_t queue;
};
/**
* Return version of this helper
*/
static xpc_object_t get_version(private_xpc_dispatch_t *this,
xpc_object_t request, xpc_connection_t client)
{
xpc_object_t reply;
reply = xpc_dictionary_create_reply(request);
xpc_dictionary_set_string(reply, "version", PACKAGE_VERSION);
return reply;
}
/**
* XPC command dispatch table
*/
static struct {
char *name;
xpc_object_t (*handler)(private_xpc_dispatch_t *this,
xpc_object_t request, xpc_connection_t client);
} commands[] = {
{ "get_version", get_version },
};
/**
* Handle a received XPC request message
*/
static void handle(private_xpc_dispatch_t *this, xpc_object_t request)
{
xpc_connection_t client;
xpc_object_t reply;
const char *command;
int i;
client = xpc_dictionary_get_remote_connection(request);
command = xpc_dictionary_get_string(request, "command");
if (command)
{
for (i = 0; i < countof(commands); i++)
{
if (streq(commands[i].name, command))
{
reply = commands[i].handler(this, request, client);
if (reply)
{
xpc_connection_send_message(client, reply);
xpc_release(reply);
}
break;
}
}
}
}
/**
* Set up GCD handler for XPC events
*/
static void set_handler(private_xpc_dispatch_t *this)
{
xpc_connection_set_event_handler(this->service, ^(xpc_object_t conn) {
xpc_connection_set_event_handler(conn, ^(xpc_object_t event) {
if (xpc_get_type(event) == XPC_TYPE_ERROR)
{
if (event == XPC_ERROR_CONNECTION_INVALID ||
event == XPC_ERROR_TERMINATION_IMMINENT)
{
xpc_connection_cancel(conn);
}
}
else
{
handle(this, event);
}
});
xpc_connection_resume(conn);
});
xpc_connection_resume(this->service);
}
METHOD(xpc_dispatch_t, destroy, void,
private_xpc_dispatch_t *this)
{
if (this->service)
{
xpc_connection_suspend(this->service);
xpc_connection_cancel(this->service);
}
free(this);
}
/**
* See header
*/
xpc_dispatch_t *xpc_dispatch_create()
{
private_xpc_dispatch_t *this;
INIT(this,
.public = {
.destroy = _destroy,
},
.queue = dispatch_queue_create("org.strongswan.charon-xpc.q",
DISPATCH_QUEUE_CONCURRENT),
);
this->service = xpc_connection_create_mach_service(
"org.strongswan.charon-xpc", this->queue,
XPC_CONNECTION_MACH_SERVICE_LISTENER);
if (!this->service)
{
destroy(this);
return NULL;
}
set_handler(this);
return &this->public;
}
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