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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 "log.h"
#include "zbxgetopt.h"
#include "zbxembed.h"
#include "zbxmutexs.h"
#include "zbxstr.h"
const char *progname;
const char title_message[] = "zabbix_js";
const char syslog_app_name[] = "zabbix_js";
const char *usage_message[] = {
"-s script-file", "-p input-param", "[-l log-level]", "[-t timeout]", NULL,
"-s script-file", "-i input-file", "[-l log-level]", "[-t timeout]", NULL,
"-h", NULL,
"-V", NULL,
NULL /* end of text */
};
unsigned char program_type;
const char *help_message[] = {
"Execute script using Zabbix embedded scripting engine.",
"",
"General options:",
" -s,--script script-file Specify the filename of script to execute. Specify - for",
" standard input.",
" -i,--input input-file Specify input parameter file name. Specify - for",
" standard input.",
" -p,--param input-param Specify input parameter",
" -l,--loglevel log-level Specify log level",
" -t,--timeout timeout Specify timeout in seconds",
" -h --help Display this help message",
" -V --version Display version number",
"",
"Example:",
" zabbix_js -s script-file.js -p example",
NULL /* end of text */
};
/* long options */
struct zbx_option longopts[] =
{
{"script", 1, NULL, 's'},
{"input", 1, NULL, 'i'},
{"param", 1, NULL, 'p'},
{"loglevel", 1, NULL, 'l'},
{"timeout", 1, NULL, 't'},
{"help", 0, NULL, 'h'},
{"version", 0, NULL, 'V'},
{NULL}
};
/* short options */
static char shortopts[] = "s:i:p:hVl:t:";
/* end of COMMAND LINE OPTIONS */
char *CONFIG_SOURCE_IP = NULL;
/* not related with tls from libzbxcomms.a */
char *CONFIG_SSL_CA_LOCATION = NULL;
char *CONFIG_SSL_CERT_LOCATION = NULL;
char *CONFIG_SSL_KEY_LOCATION = NULL;
static char *read_file(const char *filename, char **error)
{
char buffer[4096];
int n, fd;
char *data = NULL;
size_t data_alloc = 0, data_offset = 0;
if (0 != strcmp(filename, "-"))
{
if (-1 == (fd = open(filename, O_RDONLY)))
{
*error = zbx_strdup(NULL, zbx_strerror(errno));
return NULL;
}
}
else
fd = STDIN_FILENO;
while (0 != (n = read(fd, buffer, sizeof(buffer))))
{
if (-1 == n)
{
if (fd != STDIN_FILENO)
close(fd);
zbx_free(data);
*error = zbx_strdup(NULL, zbx_strerror(errno));
return NULL;
}
zbx_strncpy_alloc(&data, &data_alloc, &data_offset, buffer, n);
}
if (fd != STDIN_FILENO)
close(fd);
return data;
}
int main(int argc, char **argv)
{
int ret = FAIL, loglevel = LOG_LEVEL_WARNING, timeout = 0;
char *script_file = NULL, *input_file = NULL, *param = NULL, ch, *script = NULL,
*error = NULL, *result = NULL, script_error[MAX_STRING_LEN];
zbx_config_log_t log_file_cfg = {NULL, NULL, LOG_TYPE_UNDEFINED, 0};
/* see description of 'optarg' in 'man 3 getopt' */
char *zbx_optarg = NULL;
/* see description of 'optind' in 'man 3 getopt' */
int zbx_optind = 0;
progname = get_program_name(argv[0]);
/* parse the command-line */
while ((char)EOF != (ch = (char)zbx_getopt_long(argc, argv, shortopts, longopts, NULL, &zbx_optarg,
&zbx_optind)))
{
switch (ch)
{
case 's':
if (NULL == script_file)
script_file = zbx_strdup(NULL, zbx_optarg);
break;
case 'i':
if (NULL == input_file)
input_file = zbx_strdup(NULL, zbx_optarg);
break;
case 'p':
if (NULL == param)
param = zbx_strdup(NULL, zbx_optarg);
break;
case 'l':
loglevel = atoi(zbx_optarg);
break;
case 't':
timeout = atoi(zbx_optarg);
break;
case 'h':
zbx_help();
ret = SUCCEED;
goto clean;
case 'V':
zbx_version();
ret = SUCCEED;
goto clean;
default:
zbx_usage();
goto clean;
}
}
if (SUCCEED != zbx_locks_create(&error))
{
zbx_error("cannot create locks: %s", error);
goto clean;
}
if (SUCCEED != zabbix_open_log(&log_file_cfg, loglevel, &error))
{
zbx_error("cannot open log: %s", error);
goto clean;
}
if (NULL == script_file || (NULL == input_file && NULL == param))
{
zbx_usage();
goto close;
}
if (NULL != input_file && NULL != param)
{
zbx_error("input and script options are mutually exclusive");
goto close;
}
if (0 == strcmp(script_file, "-") && NULL != input_file && 0 == strcmp(input_file, "-"))
{
zbx_error("cannot read script and input parameters from standard input at the same time");
goto close;
}
if (NULL == (script = read_file(script_file, &error)))
{
if (NULL != error)
zbx_error("cannot read script file: %s", error);
else
zbx_error("cannot use empty script file");
goto close;
}
if (NULL != input_file)
{
if (NULL == (param = read_file(input_file, &error)))
{
if (NULL != error)
zbx_error("cannot read input file: %s", error);
else
zbx_error("cannot use empty input file");
goto close;
}
}
if (FAIL == zbx_es_execute_command(script, param, timeout, &result, script_error, sizeof(script_error), NULL))
{
zbx_error("error executing script:\n%s", script_error);
goto close;
}
ret = SUCCEED;
printf("\n%s\n", result);
close:
zabbix_close_log();
#ifndef _WINDOWS
zbx_locks_destroy();
#endif
clean:
zbx_free(result);
zbx_free(error);
zbx_free(script);
zbx_free(script_file);
zbx_free(input_file);
zbx_free(param);
return SUCCEED == ret ? EXIT_SUCCESS : EXIT_FAILURE;
}
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