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/*
** Zabbix
** Copyright (C) 2001-2022 Zabbix SIA
**
** 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 Street, Fifth Floor, Boston, MA 02110-1301, USA.
**/
#include "net.h"
#include "zbxcomms.h"
#include "log.h"
#include "cfg.h"
#include "zbxstr.h"
#include "zbxnum.h"
int tcp_expect(const char *host, unsigned short port, int timeout, const char *request,
int (*validate_func)(const char *), const char *sendtoclose, int *value_int)
{
zbx_socket_t s;
const char *buf;
int net, val = ZBX_TCP_EXPECT_OK;
*value_int = 0;
if (SUCCEED != (net = zbx_tcp_connect(&s, CONFIG_SOURCE_IP, host, port, timeout, ZBX_TCP_SEC_UNENCRYPTED, NULL,
NULL)))
{
goto out;
}
if (NULL != request)
net = zbx_tcp_send_raw(&s, request);
if (NULL != validate_func && SUCCEED == net)
{
val = ZBX_TCP_EXPECT_FAIL;
while (NULL != (buf = zbx_tcp_recv_line(&s)))
{
val = validate_func(buf);
if (ZBX_TCP_EXPECT_OK == val)
break;
if (ZBX_TCP_EXPECT_FAIL == val)
{
zabbix_log(LOG_LEVEL_DEBUG, "TCP expect content error, received [%s]", buf);
break;
}
}
}
if (NULL != sendtoclose && SUCCEED == net && ZBX_TCP_EXPECT_OK == val)
(void)zbx_tcp_send_raw(&s, sendtoclose);
if (SUCCEED == net && ZBX_TCP_EXPECT_OK == val)
*value_int = 1;
zbx_tcp_close(&s);
out:
if (SUCCEED != net)
zabbix_log(LOG_LEVEL_DEBUG, "TCP expect network error: %s", zbx_socket_strerror());
return SYSINFO_RET_OK;
}
int NET_TCP_PORT(AGENT_REQUEST *request, AGENT_RESULT *result)
{
unsigned short port;
int value_int, ret;
char *ip_str, ip[ZBX_MAX_DNSNAME_LEN + 1], *port_str;
if (2 < request->nparam)
{
SET_MSG_RESULT(result, zbx_strdup(NULL, "Too many parameters."));
return SYSINFO_RET_FAIL;
}
ip_str = get_rparam(request, 0);
port_str = get_rparam(request, 1);
if (NULL == ip_str || '\0' == *ip_str)
zbx_strscpy(ip, "127.0.0.1");
else
zbx_strscpy(ip, ip_str);
if (NULL == port_str || SUCCEED != zbx_is_ushort(port_str, &port))
{
SET_MSG_RESULT(result, zbx_strdup(NULL, "Invalid second parameter."));
return SYSINFO_RET_FAIL;
}
if (SYSINFO_RET_OK == (ret = tcp_expect(ip, port, CONFIG_TIMEOUT, NULL, NULL, NULL, &value_int)))
SET_UI64_RESULT(result, value_int);
return ret;
}
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