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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 "zbxsysinfo.h"
#include "../sysinfo.h"
#include "zbxregexp.h"
#include "log.h"
#include <sys/sensors.h>
#ifdef HAVE_SENSORDEV
static void count_sensor(int do_task, const struct sensor *sensor, double *aggr, int *cnt)
{
double value = sensor->value;
switch (sensor->type)
{
case SENSOR_TEMP:
value = (value - 273150000) / 1000000;
break;
case SENSOR_VOLTS_DC:
case SENSOR_VOLTS_AC:
case SENSOR_AMPS:
case SENSOR_LUX:
value /= 1000000;
break;
case SENSOR_TIMEDELTA:
value /= 1000000000;
break;
default:
break;
}
(*cnt)++;
switch (do_task)
{
case ZBX_DO_ONE:
*aggr = value;
break;
case ZBX_DO_AVG:
*aggr += value;
break;
case ZBX_DO_MAX:
*aggr = (1 == *cnt ? value : MAX(*aggr, value));
break;
case ZBX_DO_MIN:
*aggr = (1 == *cnt ? value : MIN(*aggr, value));
break;
}
}
static int get_device_sensors(int do_task, int *mib, const struct sensordev *sensordev, const char *name,
double *aggr, int *cnt)
{
if (ZBX_DO_ONE == do_task)
{
int i, len = 0;
struct sensor sensor;
size_t slen = sizeof(sensor);
for (i = 0; i < SENSOR_MAX_TYPES; i++)
{
if (0 == strncmp(name, sensor_type_s[i], len = strlen(sensor_type_s[i])))
break;
}
if (i == SENSOR_MAX_TYPES)
return FAIL;
if (SUCCEED != zbx_is_uint31(name + len, &mib[4]))
return FAIL;
mib[3] = i;
if (-1 == sysctl(mib, 5, &sensor, &slen, NULL, 0))
return FAIL;
count_sensor(do_task, &sensor, aggr, cnt);
}
else
{
int i, j;
for (i = 0; i < SENSOR_MAX_TYPES; i++)
{
for (j = 0; j < sensordev->maxnumt[i]; j++)
{
char human[64];
struct sensor sensor;
size_t slen = sizeof(sensor);
zbx_snprintf(human, sizeof(human), "%s%d", sensor_type_s[i], j);
if (NULL == zbx_regexp_match(human, name, NULL))
continue;
mib[3] = i;
mib[4] = j;
if (-1 == sysctl(mib, 5, &sensor, &slen, NULL, 0))
return FAIL;
count_sensor(do_task, &sensor, aggr, cnt);
}
}
}
return SUCCEED;
}
int get_sensor(AGENT_REQUEST *request, AGENT_RESULT *result)
{
char *device, *name, *function;
int do_task, mib[5], dev, cnt = 0;
double aggr = 0;
if (3 < request->nparam)
{
SET_MSG_RESULT(result, zbx_strdup(NULL, "Too many parameters."));
return SYSINFO_RET_FAIL;
}
device = get_rparam(request, 0);
name = get_rparam(request, 1);
function = get_rparam(request, 2);
if (NULL == device || '\0' == *device)
{
SET_MSG_RESULT(result, zbx_strdup(NULL, "Invalid first parameter."));
return SYSINFO_RET_FAIL;
}
if (NULL == name || '\0' == *name)
{
SET_MSG_RESULT(result, zbx_strdup(NULL, "Invalid second parameter."));
return SYSINFO_RET_FAIL;
}
if (NULL == function || '\0' == *function)
do_task = ZBX_DO_ONE;
else if (0 == strcmp(function, "avg"))
do_task = ZBX_DO_AVG;
else if (0 == strcmp(function, "max"))
do_task = ZBX_DO_MAX;
else if (0 == strcmp(function, "min"))
do_task = ZBX_DO_MIN;
else
{
SET_MSG_RESULT(result, zbx_strdup(NULL, "Invalid third parameter."));
return SYSINFO_RET_FAIL;
}
mib[0] = CTL_HW;
mib[1] = HW_SENSORS;
for (dev = 0;; dev++)
{
struct sensordev sensordev;
size_t sdlen = sizeof(sensordev);
mib[2] = dev;
if (-1 == sysctl(mib, 3, &sensordev, &sdlen, NULL, 0))
{
if (errno == ENXIO)
continue;
if (errno == ENOENT)
break;
SET_MSG_RESULT(result, zbx_dsprintf(NULL, "Cannot obtain system information: %s",
zbx_strerror(errno)));
return SYSINFO_RET_FAIL;
}
if ((ZBX_DO_ONE == do_task && 0 == strcmp(sensordev.xname, device)) ||
(ZBX_DO_ONE != do_task && NULL != zbx_regexp_match(sensordev.xname, device, NULL)))
{
if (SUCCEED != get_device_sensors(do_task, mib, &sensordev, name, &aggr, &cnt))
{
SET_MSG_RESULT(result, zbx_strdup(NULL, "Cannot obtain sensor information."));
return SYSINFO_RET_FAIL;
}
}
}
if (0 == cnt)
{
SET_MSG_RESULT(result, zbx_strdup(NULL, "Cannot obtain sensor information."));
return SYSINFO_RET_FAIL;
}
if (ZBX_DO_AVG == do_task)
SET_DBL_RESULT(result, aggr / cnt);
else
SET_DBL_RESULT(result, aggr);
return SYSINFO_RET_OK;
}
#else
int get_sensor(AGENT_REQUEST *request, AGENT_RESULT *result)
{
SET_MSG_RESULT(result, zbx_strdup(NULL, "Agent was compiled without support for \"sensordev\" structure."));
return SYSINFO_RET_FAIL;
}
#endif /* HAVE_SENSORDEV */
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