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/*
* Copyright (C) 2012 Martin Willi
* Copyright (C) 2012 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 "load_tester_control.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <unistd.h>
#include <errno.h>
#include <daemon.h>
#include <threading/thread.h>
#include <processing/jobs/callback_job.h>
typedef struct private_load_tester_control_t private_load_tester_control_t;
/**
* Private data of an load_tester_control_t object.
*/
struct private_load_tester_control_t {
/**
* Public load_tester_control_t interface.
*/
load_tester_control_t public;
/**
* Load tester unix socket file descriptor
*/
int socket;
};
/**
* Open load-tester listening socket
*/
static bool open_socket(private_load_tester_control_t *this)
{
struct sockaddr_un addr;
mode_t old;
addr.sun_family = AF_UNIX;
strcpy(addr.sun_path, LOAD_TESTER_SOCKET);
this->socket = socket(AF_UNIX, SOCK_SEQPACKET, 0);
if (this->socket == -1)
{
DBG1(DBG_CFG, "creating load-tester socket failed");
return FALSE;
}
unlink(addr.sun_path);
old = umask(~(S_IRWXU | S_IRWXG));
if (bind(this->socket, (struct sockaddr*)&addr, sizeof(addr)) < 0)
{
DBG1(DBG_CFG, "binding load-tester socket failed: %s", strerror(errno));
close(this->socket);
return FALSE;
}
umask(old);
if (chown(addr.sun_path, charon->caps->get_uid(charon->caps),
charon->caps->get_gid(charon->caps)) != 0)
{
DBG1(DBG_CFG, "changing load-tester socket permissions failed: %s",
strerror(errno));
}
if (listen(this->socket, 10) < 0)
{
DBG1(DBG_CFG, "listening on load-tester socket failed: %s", strerror(errno));
close(this->socket);
unlink(addr.sun_path);
return FALSE;
}
return TRUE;
}
/**
* Initiate load-test, write progress to stream
*/
static job_requeue_t initiate(FILE *stream)
{
enumerator_t *enumerator;
peer_cfg_t *peer_cfg;
child_cfg_t *child_cfg;
u_int i, count;
char buf[16] = "";
fflush(stream);
if (fgets(buf, sizeof(buf), stream) == NULL)
{
return JOB_REQUEUE_NONE;
}
if (sscanf(buf, "%u", &count) != 1)
{
return JOB_REQUEUE_NONE;
}
peer_cfg = charon->backends->get_peer_cfg_by_name(charon->backends,
"load-test");
if (!peer_cfg)
{
return JOB_REQUEUE_NONE;
}
enumerator = peer_cfg->create_child_cfg_enumerator(peer_cfg);
if (!enumerator->enumerate(enumerator, &child_cfg))
{
enumerator->destroy(enumerator);
return JOB_REQUEUE_NONE;
}
enumerator->destroy(enumerator);
for (i = 0; i < count; i++)
{
if (charon->controller->initiate(charon->controller,
peer_cfg->get_ref(peer_cfg),
child_cfg->get_ref(child_cfg),
controller_cb_empty, NULL, 0) == SUCCESS)
{
fprintf(stream, ".");
}
else
{
fprintf(stream, "!");
}
fflush(stream);
}
peer_cfg->destroy(peer_cfg);
fprintf(stream, "\n");
return JOB_REQUEUE_NONE;
}
/**
* Accept load-tester control connections, dispatch
*/
static job_requeue_t receive(private_load_tester_control_t *this)
{
struct sockaddr_un addr;
int fd, len = sizeof(addr);
bool oldstate;
FILE *stream;
oldstate = thread_cancelability(TRUE);
fd = accept(this->socket, (struct sockaddr*)&addr, &len);
thread_cancelability(oldstate);
if (fd != -1)
{
stream = fdopen(fd, "r+");
if (stream)
{
DBG1(DBG_CFG, "client connected");
lib->processor->queue_job(lib->processor,
(job_t*)callback_job_create_with_prio(
(callback_job_cb_t)initiate, stream, (void*)fclose,
(callback_job_cancel_t)return_false, JOB_PRIO_CRITICAL));
}
else
{
close(fd);
}
}
return JOB_REQUEUE_FAIR;
}
METHOD(load_tester_control_t, destroy, void,
private_load_tester_control_t *this)
{
if (this->socket != -1)
{
close(this->socket);
}
free(this);
}
/**
* See header
*/
load_tester_control_t *load_tester_control_create()
{
private_load_tester_control_t *this;
INIT(this,
.public = {
.destroy = _destroy,
},
);
if (open_socket(this))
{
lib->processor->queue_job(lib->processor, (job_t*)
callback_job_create_with_prio((callback_job_cb_t)receive, this, NULL,
(callback_job_cancel_t)return_false, JOB_PRIO_CRITICAL));
}
else
{
this->socket = -1;
}
return &this->public;
}
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