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/*
** Zabbix
** Copyright (C) 2001-2021 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_common.h"
#include "sysinfo.h"
#include "log.h"
#include "file.h"
#include "dir.h"
#include "net.h"
#include "dns.h"
#include "system.h"
#include "zabbix_stats.h"
#include "zbxexec.h"
#if !defined(_WINDOWS)
# define VFS_TEST_FILE "/etc/passwd"
# define VFS_TEST_REGEXP "root"
# define VFS_TEST_DIR "/var/log"
#else
# define VFS_TEST_FILE "c:\\windows\\win.ini"
# define VFS_TEST_REGEXP "fonts"
# define VFS_TEST_DIR "c:\\windows"
#endif
extern int CONFIG_TIMEOUT;
static int ONLY_ACTIVE(AGENT_REQUEST *request, AGENT_RESULT *result);
static int SYSTEM_RUN(AGENT_REQUEST *request, AGENT_RESULT *result);
static int SYSTEM_RUN_LOCAL(AGENT_REQUEST *request, AGENT_RESULT *result);
ZBX_METRIC parameters_common_local[] =
/* KEY FLAG FUNCTION TEST PARAMETERS */
{
{"system.run", CF_HAVEPARAMS, SYSTEM_RUN_LOCAL, "echo test"},
{NULL}
};
ZBX_METRIC parameters_common[] =
/* KEY FLAG FUNCTION TEST PARAMETERS */
{
{"system.localtime", CF_HAVEPARAMS, SYSTEM_LOCALTIME, "utc"},
{"system.run", CF_HAVEPARAMS, SYSTEM_RUN, "echo test"},
{"vfs.file.size", CF_HAVEPARAMS, VFS_FILE_SIZE, VFS_TEST_FILE},
{"vfs.file.time", CF_HAVEPARAMS, VFS_FILE_TIME, VFS_TEST_FILE ",modify"},
{"vfs.file.exists", CF_HAVEPARAMS, VFS_FILE_EXISTS, VFS_TEST_FILE},
{"vfs.file.contents", CF_HAVEPARAMS, VFS_FILE_CONTENTS, VFS_TEST_FILE},
{"vfs.file.regexp", CF_HAVEPARAMS, VFS_FILE_REGEXP, VFS_TEST_FILE "," VFS_TEST_REGEXP},
{"vfs.file.regmatch", CF_HAVEPARAMS, VFS_FILE_REGMATCH, VFS_TEST_FILE "," VFS_TEST_REGEXP},
{"vfs.file.md5sum", CF_HAVEPARAMS, VFS_FILE_MD5SUM, VFS_TEST_FILE},
{"vfs.file.cksum", CF_HAVEPARAMS, VFS_FILE_CKSUM, VFS_TEST_FILE},
{"vfs.file.owner", CF_HAVEPARAMS, VFS_FILE_OWNER, VFS_TEST_FILE ",user,name"},
{"vfs.file.permissions",CF_HAVEPARAMS, VFS_FILE_PERMISSIONS, VFS_TEST_FILE},
{"vfs.file.get", CF_HAVEPARAMS, VFS_FILE_GET, VFS_TEST_FILE},
{"vfs.dir.size", CF_HAVEPARAMS, VFS_DIR_SIZE, VFS_TEST_DIR},
{"vfs.dir.count", CF_HAVEPARAMS, VFS_DIR_COUNT, VFS_TEST_DIR},
{"vfs.dir.get", CF_HAVEPARAMS, VFS_DIR_GET, VFS_TEST_DIR},
{"net.dns", CF_HAVEPARAMS, NET_DNS, ",zabbix.com"},
{"net.dns.record", CF_HAVEPARAMS, NET_DNS_RECORD, ",zabbix.com"},
{"net.tcp.dns", CF_HAVEPARAMS, NET_DNS, ",zabbix.com"}, /* deprecated */
{"net.tcp.dns.query", CF_HAVEPARAMS, NET_DNS_RECORD, ",zabbix.com"}, /* deprecated */
{"net.tcp.port", CF_HAVEPARAMS, NET_TCP_PORT, ",80"},
{"system.users.num", 0, SYSTEM_USERS_NUM, NULL},
{"log", CF_HAVEPARAMS, ONLY_ACTIVE, "logfile"},
{"log.count", CF_HAVEPARAMS, ONLY_ACTIVE, "logfile"},
{"logrt", CF_HAVEPARAMS, ONLY_ACTIVE, "logfile"},
{"logrt.count", CF_HAVEPARAMS, ONLY_ACTIVE, "logfile"},
{"eventlog", CF_HAVEPARAMS, ONLY_ACTIVE, "system"},
{"zabbix.stats", CF_HAVEPARAMS, ZABBIX_STATS, "127.0.0.1,10051"},
{NULL}
};
static const char *user_parameter_dir = NULL;
void set_user_parameter_dir(const char *path)
{
user_parameter_dir = path;
}
static int ONLY_ACTIVE(AGENT_REQUEST *request, AGENT_RESULT *result)
{
ZBX_UNUSED(request);
SET_MSG_RESULT(result, zbx_strdup(NULL, "Accessible only as active check."));
return SYSINFO_RET_FAIL;
}
static int execute_str(const char *command, AGENT_RESULT *result, const char* dir)
{
int ret = SYSINFO_RET_FAIL;
char *cmd_result = NULL, error[MAX_STRING_LEN];
if (SUCCEED != zbx_execute(command, &cmd_result, error, sizeof(error), CONFIG_TIMEOUT,
ZBX_EXIT_CODE_CHECKS_DISABLED, dir))
{
SET_MSG_RESULT(result, zbx_strdup(NULL, error));
goto out;
}
zbx_rtrim(cmd_result, ZBX_WHITESPACE);
zabbix_log(LOG_LEVEL_DEBUG, "%s() command:'%s' len:" ZBX_FS_SIZE_T " cmd_result:'%.20s'",
__func__, command, (zbx_fs_size_t)strlen(cmd_result), cmd_result);
SET_TEXT_RESULT(result, zbx_strdup(NULL, cmd_result));
ret = SYSINFO_RET_OK;
out:
zbx_free(cmd_result);
return ret;
}
int EXECUTE_USER_PARAMETER(AGENT_REQUEST *request, AGENT_RESULT *result)
{
if (1 != request->nparam)
{
SET_MSG_RESULT(result, zbx_strdup(NULL, "Too many parameters."));
return SYSINFO_RET_FAIL;
}
return execute_str(get_rparam(request, 0), result, user_parameter_dir);
}
int EXECUTE_STR(const char *command, AGENT_RESULT *result)
{
return execute_str(command, result, NULL);
}
int EXECUTE_DBL(const char *command, AGENT_RESULT *result)
{
if (SYSINFO_RET_OK != EXECUTE_STR(command, result))
return SYSINFO_RET_FAIL;
if (NULL == GET_DBL_RESULT(result))
{
zabbix_log(LOG_LEVEL_WARNING, "Remote command [%s] result is not double", command);
SET_MSG_RESULT(result, zbx_strdup(NULL, "Invalid result. Double is expected."));
return SYSINFO_RET_FAIL;
}
UNSET_RESULT_EXCLUDING(result, AR_DOUBLE);
return SYSINFO_RET_OK;
}
int EXECUTE_INT(const char *command, AGENT_RESULT *result)
{
if (SYSINFO_RET_OK != EXECUTE_STR(command, result))
return SYSINFO_RET_FAIL;
if (NULL == GET_UI64_RESULT(result))
{
zabbix_log(LOG_LEVEL_WARNING, "Remote command [%s] result is not unsigned integer", command);
SET_MSG_RESULT(result, zbx_strdup(NULL, "Invalid result. Unsigned integer is expected."));
return SYSINFO_RET_FAIL;
}
UNSET_RESULT_EXCLUDING(result, AR_UINT64);
return SYSINFO_RET_OK;
}
static int system_run(AGENT_REQUEST *request, AGENT_RESULT *result, int level)
{
char *command, *flag;
if (2 < request->nparam)
{
SET_MSG_RESULT(result, zbx_strdup(NULL, "Too many parameters."));
return SYSINFO_RET_FAIL;
}
command = get_rparam(request, 0);
flag = get_rparam(request, 1);
if (NULL == command || '\0' == *command)
{
SET_MSG_RESULT(result, zbx_strdup(NULL, "Invalid first parameter."));
return SYSINFO_RET_FAIL;
}
zabbix_log(level, "Executing command '%s'", command);
if (NULL == flag || '\0' == *flag || 0 == strcmp(flag, "wait")) /* default parameter */
{
return EXECUTE_STR(command, result);
}
else if (0 == strcmp(flag, "nowait"))
{
if (SUCCEED != zbx_execute_nowait(command))
{
SET_MSG_RESULT(result, zbx_strdup(NULL, "Cannot execute command."));
return SYSINFO_RET_FAIL;
}
}
else
{
SET_MSG_RESULT(result, zbx_strdup(NULL, "Invalid second parameter."));
return SYSINFO_RET_FAIL;
}
SET_UI64_RESULT(result, 1);
return SYSINFO_RET_OK;
}
static int SYSTEM_RUN(AGENT_REQUEST *request, AGENT_RESULT *result)
{
int level;
level = LOG_LEVEL_DEBUG;
if (0 != CONFIG_LOG_REMOTE_COMMANDS)
level = LOG_LEVEL_WARNING;
return system_run(request, result, level);
}
static int SYSTEM_RUN_LOCAL(AGENT_REQUEST *request, AGENT_RESULT *result)
{
return system_run(request, result, LOG_LEVEL_DEBUG);
}
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