From 44a321cb8a42d6c0ea2d96a1086a17f2134c89cc Mon Sep 17 00:00:00 2001 From: Ethan Galstad Date: Thu, 28 Feb 2002 06:42:51 +0000 Subject: Initial revision git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@2 f882894a-f735-0410-b71e-b25c423dba1c --- plugins/check_ftp.c | 337 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 337 insertions(+) create mode 100644 plugins/check_ftp.c (limited to 'plugins/check_ftp.c') diff --git a/plugins/check_ftp.c b/plugins/check_ftp.c new file mode 100644 index 00000000..1c65d642 --- /dev/null +++ b/plugins/check_ftp.c @@ -0,0 +1,337 @@ +/****************************************************************************** + * + * CHECK_FTP.C + * + * Program: FTP plugin for Nagios + * License: GPL + * Copyright (c) 1999 Ethan Galstad (nagios@nagios.org) + * + * $Id$ + * + * Description: + * + * This plugin will attempt to open an FTP connection with the host. + * Successul connects return STATE_OK, refusals and timeouts return + * STATE_CRITICAL, other errors return STATE_UNKNOWN. Successful + * connects, but incorrect reponse messages from the host result in + * STATE_WARNING return values. + * + * License Information: + * + * 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., 675 Mass Ave, Cambridge, MA 02139, USA. + * + *****************************************************************************/ + +#include "config.h" +#include "common.h" +#include "netutils.h" +#include "utils.h" + +#define PROGNAME "check_ftp" + +#define FTP_PORT 21 +#define FTP_EXPECT "220" +#define FTP_QUIT "QUIT\n" + +int process_arguments (int, char **); +int call_getopt (int, char **); +void print_usage (void); +void print_help (void); + +time_t start_time, end_time; +int server_port = FTP_PORT; +char *server_address = NULL; +char *server_expect = NULL; +int warning_time = 0; +int check_warning_time = FALSE; +int critical_time = 0; +int check_critical_time = FALSE; +int verbose = FALSE; + + +int +main (int argc, char **argv) +{ + int sd; + int result; + char buffer[MAX_INPUT_BUFFER]; + + if (process_arguments (argc, argv) == ERROR) + usage ("Could not parse arguments\n"); + + /* initialize alarm signal handling */ + signal (SIGALRM, socket_timeout_alarm_handler); + + /* set socket timeout */ + alarm (socket_timeout); + + /* try to connect to the host at the given port number */ + time (&start_time); + result = my_tcp_connect (server_address, server_port, &sd); + + /* we connected, so close connection before exiting */ + if (result == STATE_OK) { + + /* watch for the FTP connection string */ + result = recv (sd, buffer, MAX_INPUT_BUFFER - 1, 0); + + /* strip the buffer of carriage returns */ + strip (buffer); + + /* return a WARNING status if we couldn't read any data */ + if (result == -1) { + printf ("recv() failed\n"); + result = STATE_WARNING; + } + + else { + + /* make sure we find the response we are looking for */ + if (!strstr (buffer, server_expect)) { + + if (server_port == FTP_PORT) + printf ("Invalid FTP response received from host\n"); + else + printf ("Invalid FTP response received from host on port %d\n", + server_port); + result = STATE_WARNING; + } + + else { + time (&end_time); + + result = STATE_OK; + + if (check_critical_time == TRUE + && (end_time - start_time) > critical_time) result = + STATE_CRITICAL; + else if (check_warning_time == TRUE + && (end_time - start_time) > warning_time) result = + STATE_WARNING; + + if (verbose == TRUE) + printf ("FTP %s - %d sec. response time, %s\n", + (result == STATE_OK) ? "ok" : "problem", + (int) (end_time - start_time), buffer); + else + printf ("FTP %s - %d second response time\n", + (result == STATE_OK) ? "ok" : "problem", + (int) (end_time - start_time)); + } + } + + /* close the connection */ + send (sd, FTP_QUIT, strlen (FTP_QUIT), 0); + close (sd); + } + + /* reset the alarm */ + alarm (0); + + return result; +} + + + + + + +/* process command-line arguments */ +int +process_arguments (int argc, char **argv) +{ + int c; + + if (argc < 2) + usage ("\n"); + + for (c = 1; c < argc; c++) { + if (strcmp ("-to", argv[c]) == 0) + strcpy (argv[c], "-t"); + else if (strcmp ("-wt", argv[c]) == 0) + strcpy (argv[c], "-w"); + else if (strcmp ("-ct", argv[c]) == 0) + strcpy (argv[c], "-c"); + } + + c = 0; + while ((c += call_getopt (argc - c, &argv[c])) < argc) { + + if (is_option (argv[c])) + continue; + + if (server_address == NULL) { + if (argc > c) { + if (is_host (argv[c]) == FALSE) + usage ("Invalid host name/address\n"); + server_address = argv[c]; + } + else { + usage ("Host name was not supplied\n"); + } + } + } + + if (server_expect == NULL) + server_expect = strscpy (NULL, FTP_EXPECT); + + return OK; +} + + + + + +int +call_getopt (int argc, char **argv) +{ + int c, i = 0; + +#ifdef HAVE_GETOPT_H + int option_index = 0; + static struct option long_options[] = { + {"hostname", required_argument, 0, 'H'}, + {"expect", required_argument, 0, 'e'}, + {"critical", required_argument, 0, 'c'}, + {"warning", required_argument, 0, 'w'}, + {"timeout", required_argument, 0, 'w'}, + {"port", required_argument, 0, 'p'}, + {"verbose", no_argument, 0, 'v'}, + {"version", no_argument, 0, 'V'}, + {"help", no_argument, 0, 'h'}, + {0, 0, 0, 0} + }; +#endif + + while (1) { +#ifdef HAVE_GETOPT_H + c = + getopt_long (argc, argv, "+hVvH:e:c:w:t:p:", long_options, + &option_index); +#else + c = getopt (argc, argv, "+hVvH:e:c:w:t:p:"); +#endif + + i++; + + if (c == -1 || c == EOF || c == 1) + break; + + switch (c) { + case 'H': + case 'e': + case 'c': + case 'w': + case 't': + case 'p': + i++; + } + + switch (c) { + case '?': /* print short usage statement if args not parsable */ + printf ("%s: Unknown argument: %s\n\n", my_basename (argv[0]), optarg); + print_usage (); + exit (STATE_UNKNOWN); + case 'h': /* help */ + print_help (); + exit (STATE_OK); + case 'V': /* version */ + print_revision (my_basename (argv[0]), "$Revision$"); + exit (STATE_OK); + case 'v': /* verbose mode */ + verbose = TRUE; + break; + case 'H': /* hostname */ + if (is_host (optarg) == FALSE) + usage ("Invalid host name/address\n"); + server_address = optarg; + break; + case 'e': /* expect */ + server_expect = optarg; + break; + case 'c': /* critical */ + if (!is_intnonneg (optarg)) + usage ("Critical threshold must be a nonnegative integer\n"); + critical_time = atoi (optarg); + check_critical_time = TRUE; + break; + case 'w': /* warning */ + if (!is_intnonneg (optarg)) + usage ("Warning threshold must be a nonnegative integer\n"); + warning_time = atoi (optarg); + check_warning_time = TRUE; + break; + case 't': /* timeout */ + if (!is_intnonneg (optarg)) + usage ("Timeout interval must be a nonnegative integer\n"); + socket_timeout = atoi (optarg); + break; + case 'p': /* port */ + if (!is_intnonneg (optarg)) + usage ("Serevr port must be a nonnegative integer\n"); + server_port = atoi (optarg); + break; + } + } + return i; +} + + + + + +void +print_usage (void) +{ + printf + ("Usage: %s -H [-e expect] [-p port] [-w warn_time]\n" + " [-c crit_time] [-t to_sec] [-v]\n", PROGNAME); +} + + + + + +void +print_help (void) +{ + print_revision (PROGNAME, "$Revision$"); + printf + ("Copyright (c) 1999 Ethan Galstad (nagios@nagios.org)\n\n" + "This plugin tests an FTP connection with the specified host.\n\n"); + print_usage (); + printf + ("Options:\n" + " -H, --hostname=ADDRESS\n" + " Host name argument for servers using host headers (use numeric\n" + " address if possible to bypass DNS lookup).\n" + " -e, --expect=STRING\n" + " String to expect in first line of server response (default: %s)\n" + " -p, --port=INTEGER\n" + " Port number (default: %d)\n" + " -w, --warning=INTEGER\n" + " Response time to result in warning status (seconds)\n" + " -c, --critical=INTEGER\n" + " Response time to result in critical status (seconds)\n" + " -t, --timeout=INTEGER\n" + " Seconds before connection times out (default: %d)\n" + " -v" + " Show details for command-line debugging (do not use with nagios server)\n" + " -h, --help\n" + " Print detailed help screen\n" + " -V, --version\n" + " Print version information\n", + FTP_EXPECT, FTP_PORT, DEFAULT_SOCKET_TIMEOUT); +} -- cgit v1.2.3