Imported Upstream version 1.4.5
This commit is contained in:
parent
62d1e7d5fe
commit
6a280f6f24
412 changed files with 168642 additions and 0 deletions
651
plugins/check_tcp.c
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651
plugins/check_tcp.c
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/*****************************************************************************
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*
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* Nagios check_tcp plugin
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*
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* License: GPL
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* Copyright (c) 1999-2006 nagios-plugins team
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*
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* Last Modified: $Date: 2006/10/19 23:53:28 $
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*
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* Description:
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*
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* This file contains the check_tcp plugin
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*
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* License Information:
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* $Id: check_tcp.c,v 1.80 2006/10/19 23:53:28 opensides Exp $
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*
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*****************************************************************************/
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/* progname "check_tcp" changes depending on symlink called */
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char *progname;
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const char *revision = "$Revision: 1.80 $";
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const char *copyright = "1999-2006";
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const char *email = "nagiosplug-devel@lists.sourceforge.net";
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#include "common.h"
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#include "netutils.h"
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#include "utils.h"
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#ifdef HAVE_SSL
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static int check_cert = FALSE;
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static int days_till_exp;
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# define my_recv(buf, len) ((flags & FLAG_SSL) ? np_net_ssl_read(buf, len) : read(sd, buf, len))
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# define my_send(buf, len) ((flags & FLAG_SSL) ? np_net_ssl_write(buf, len) : send(sd, buf, len, 0))
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#else
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# define my_recv(buf, len) read(sd, buf, len)
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# define my_send(buf, len) send(sd, buf, len, 0)
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#endif
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/* int my_recv(char *, size_t); */
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static int process_arguments (int, char **);
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void print_help (void);
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void print_usage (void);
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#define EXPECT server_expect[0]
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static char *SERVICE = "TCP";
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static char *SEND = NULL;
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static char *QUIT = NULL;
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static int PROTOCOL = IPPROTO_TCP; /* most common is default */
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static int PORT = 0;
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static int server_port = 0;
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static char *server_address = NULL;
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static char *server_send = NULL;
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static char *server_quit = NULL;
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static char **server_expect;
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static size_t server_expect_count = 0;
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static size_t maxbytes = 0;
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static char **warn_codes = NULL;
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static size_t warn_codes_count = 0;
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static char **crit_codes = NULL;
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static size_t crit_codes_count = 0;
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static unsigned int delay = 0;
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static double warning_time = 0;
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static double critical_time = 0;
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static double elapsed_time = 0;
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static long microsec;
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static int sd = 0;
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#define MAXBUF 1024
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static char buffer[MAXBUF];
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static int expect_mismatch_state = STATE_WARNING;
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#define FLAG_SSL 0x01
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#define FLAG_VERBOSE 0x02
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#define FLAG_EXACT_MATCH 0x04
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#define FLAG_TIME_WARN 0x08
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#define FLAG_TIME_CRIT 0x10
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#define FLAG_HIDE_OUTPUT 0x20
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static size_t flags = FLAG_EXACT_MATCH;
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int
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main (int argc, char **argv)
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{
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int result = STATE_UNKNOWN;
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int i;
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char *status = NULL;
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struct timeval tv;
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size_t len, match = -1;
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setlocale (LC_ALL, "");
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bindtextdomain (PACKAGE, LOCALEDIR);
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textdomain (PACKAGE);
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/* determine program- and service-name quickly */
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progname = strrchr(argv[0], '/');
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if(progname != NULL) progname++;
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else progname = argv[0];
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len = strlen(progname);
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if(len > 6 && !memcmp(progname, "check_", 6)) {
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SERVICE = progname + 6;
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for(i = 0; i < len - 6; i++)
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SERVICE[i] = toupper(SERVICE[i]);
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}
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/* set up a resonable buffer at first (will be realloc()'ed if
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* user specifies other options) */
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server_expect = calloc(sizeof(char *), 2);
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/* determine defaults for this service's protocol */
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if (!strncmp(SERVICE, "UDP", 3)) {
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PROTOCOL = IPPROTO_UDP;
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}
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else if (!strncmp(SERVICE, "FTP", 3)) {
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EXPECT = "220";
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QUIT = "QUIT\r\n";
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PORT = 21;
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}
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else if (!strncmp(SERVICE, "POP", 3) || !strncmp(SERVICE, "POP3", 4)) {
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EXPECT = "+OK";
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QUIT = "QUIT\r\n";
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PORT = 110;
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}
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else if (!strncmp(SERVICE, "SMTP", 4)) {
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EXPECT = "220";
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QUIT = "QUIT\r\n";
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PORT = 25;
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}
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else if (!strncmp(SERVICE, "IMAP", 4)) {
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EXPECT = "* OK";
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QUIT = "a1 LOGOUT\r\n";
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PORT = 143;
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}
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#ifdef HAVE_SSL
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else if (!strncmp(SERVICE, "SIMAP", 5)) {
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EXPECT = "* OK";
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QUIT = "a1 LOGOUT\r\n";
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flags |= FLAG_SSL;
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PORT = 993;
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}
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else if (!strncmp(SERVICE, "SPOP", 4)) {
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EXPECT = "+OK";
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QUIT = "QUIT\r\n";
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flags |= FLAG_SSL;
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PORT = 995;
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}
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else if (!strncmp(SERVICE, "SSMTP", 5)) {
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EXPECT = "220";
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QUIT = "QUIT\r\n";
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flags |= FLAG_SSL;
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PORT = 465;
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}
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else if (!strncmp(SERVICE, "JABBER", 6)) {
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SEND = "<stream:stream to=\'host\' xmlns=\'jabber:client\' xmlns:stream=\'http://etherx.jabber.org/streams\'>\n";
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EXPECT = "<?xml version=\'1.0\'?><stream:stream xmlns:stream=\'http://etherx.jabber.org/streams\'";
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QUIT = "</stream:stream>\n";
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flags |= FLAG_SSL | FLAG_HIDE_OUTPUT;
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PORT = 5222;
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}
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else if (!strncmp (SERVICE, "NNTPS", 5)) {
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server_expect_count = 2;
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server_expect[0] = "200";
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server_expect[1] = "201";
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QUIT = "QUIT\r\n";
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flags |= FLAG_SSL;
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PORT = 563;
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}
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#endif
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else if (!strncmp (SERVICE, "NNTP", 4)) {
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server_expect_count = 2;
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server_expect = malloc(sizeof(char *) * server_expect_count);
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server_expect[0] = strdup("200");
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server_expect[1] = strdup("201");
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QUIT = "QUIT\r\n";
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PORT = 119;
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}
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else if (!strncmp(SERVICE, "CLAMD", 5)) {
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SEND = "PING";
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EXPECT = "PONG";
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QUIT = NULL;
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PORT = 3310;
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}
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/* fallthrough check, so it's supposed to use reverse matching */
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else if (strcmp (SERVICE, "TCP"))
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usage (_("CRITICAL - Generic check_tcp called with unknown service\n"));
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server_address = "127.0.0.1";
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server_port = PORT;
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server_send = SEND;
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server_quit = QUIT;
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status = NULL;
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if (process_arguments (argc, argv) == ERROR)
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usage4 (_("Could not parse arguments"));
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if(flags & FLAG_VERBOSE) {
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printf("Using service %s\n", SERVICE);
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printf("Port: %d\n", server_port);
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printf("flags: 0x%x\n", (int)flags);
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}
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if(EXPECT && !server_expect_count)
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server_expect_count++;
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if(PROTOCOL==IPPROTO_UDP && !(server_expect_count && server_send)){
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usage(_("With UDP checks, a send/expect string must be specified."));
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}
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/* set up the timer */
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signal (SIGALRM, socket_timeout_alarm_handler);
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alarm (socket_timeout);
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/* try to connect to the host at the given port number */
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gettimeofday (&tv, NULL);
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result = np_net_connect (server_address, server_port, &sd, PROTOCOL);
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if (result == STATE_CRITICAL) return STATE_CRITICAL;
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#ifdef HAVE_SSL
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if (flags & FLAG_SSL){
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result = np_net_ssl_init(sd);
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if (result == STATE_OK && check_cert == TRUE) {
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result = np_net_ssl_check_cert(days_till_exp);
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if(result != STATE_OK) {
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printf(_("CRITICAL - Cannot retrieve server certificate.\n"));
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}
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}
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}
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if(result != STATE_OK){
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np_net_ssl_cleanup();
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if(sd) close(sd);
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return result;
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}
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#endif /* HAVE_SSL */
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if (server_send != NULL) { /* Something to send? */
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my_send(server_send, strlen(server_send));
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}
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if (delay > 0) {
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tv.tv_sec += delay;
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sleep (delay);
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}
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if(flags & FLAG_VERBOSE) {
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if (server_send) {
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printf("Send string: %s\n", server_send);
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}
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if (server_quit) {
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printf("Quit string: %s\n", server_quit);
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}
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printf("server_expect_count: %d\n", (int)server_expect_count);
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for(i = 0; i < server_expect_count; i++)
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printf("\t%d: %s\n", i, server_expect[i]);
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}
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/* if(len) later on, we know we have a non-NULL response */
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len = 0;
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if (server_expect_count) {
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/* watch for the expect string */
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while ((i = my_recv(buffer, sizeof(buffer))) > 0) {
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status = realloc(status, len + i + 1);
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memcpy(&status[len], buffer, i);
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len += i;
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/* stop reading if user-forced or data-starved */
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if(i < sizeof(buffer) || (maxbytes && len >= maxbytes))
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break;
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if (maxbytes && len >= maxbytes)
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break;
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}
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/* no data when expected, so return critical */
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if (len == 0)
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die (STATE_CRITICAL, _("No data received from host\n"));
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/* force null-termination and strip whitespace from end of output */
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status[len--] = '\0';
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/* print raw output if we're debugging */
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if(flags & FLAG_VERBOSE)
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printf("received %d bytes from host\n#-raw-recv-------#\n%s\n#-raw-recv-------#\n",
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(int)len + 1, status);
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while(isspace(status[len])) status[len--] = '\0';
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for (i = 0; i < server_expect_count; i++) {
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match = -2; /* tag it so we know if we tried and failed */
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if (flags & FLAG_VERBOSE)
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printf ("looking for [%s] %s [%s]\n", server_expect[i],
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(flags & FLAG_EXACT_MATCH) ? "in beginning of" : "anywhere in",
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status);
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/* match it. math first in short-circuit */
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if ((flags & FLAG_EXACT_MATCH && !strncmp(status, server_expect[i], strlen(server_expect[i]))) ||
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(!(flags & FLAG_EXACT_MATCH) && strstr(status, server_expect[i])))
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{
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if(flags & FLAG_VERBOSE) puts("found it");
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match = i;
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break;
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}
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}
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}
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if (server_quit != NULL) {
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my_send(server_quit, strlen(server_quit));
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}
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#ifdef HAVE_SSL
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np_net_ssl_cleanup();
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#endif
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if (sd) close (sd);
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microsec = deltime (tv);
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elapsed_time = (double)microsec / 1.0e6;
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if (flags & FLAG_TIME_CRIT && elapsed_time > critical_time)
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result = STATE_CRITICAL;
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else if (flags & FLAG_TIME_WARN && elapsed_time > warning_time)
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result = STATE_WARNING;
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/* did we get the response we hoped? */
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if(match == -2 && result != STATE_CRITICAL)
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result = expect_mismatch_state;
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/* reset the alarm */
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alarm (0);
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/* this is a bit stupid, because we don't want to print the
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* response time (which can look ok to the user) if we didn't get
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* the response we were looking for. if-else */
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printf(_("%s %s - "), SERVICE, state_text(result));
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if(match == -2 && len && !(flags & FLAG_HIDE_OUTPUT))
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printf("Unexpected response from host/socket: %s", status);
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else {
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printf("%.3f second response time on ", elapsed_time);
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if(server_address[0] != '/')
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printf("port %d", server_port);
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else
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printf("socket %s", server_address);
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}
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if (match != -2 && !(flags & FLAG_HIDE_OUTPUT) && len)
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printf (" [%s]", status);
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/* perf-data doesn't apply when server doesn't talk properly,
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* so print all zeroes on warn and crit */
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if(match == -2)
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printf ("|time=%fs;0.0;0.0;0.0;0.0", elapsed_time);
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else
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printf("|%s",
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fperfdata ("time", elapsed_time, "s",
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TRUE, warning_time,
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TRUE, critical_time,
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TRUE, 0,
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TRUE, socket_timeout)
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);
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putchar('\n');
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return result;
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}
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||||
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||||
|
||||
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/* process command-line arguments */
|
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static int
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process_arguments (int argc, char **argv)
|
||||
{
|
||||
int c;
|
||||
int escape = 0;
|
||||
|
||||
int option = 0;
|
||||
static struct option longopts[] = {
|
||||
{"hostname", required_argument, 0, 'H'},
|
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{"critical", required_argument, 0, 'c'},
|
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{"warning", required_argument, 0, 'w'},
|
||||
{"critical-codes", required_argument, 0, 'C'},
|
||||
{"warning-codes", required_argument, 0, 'W'},
|
||||
{"timeout", required_argument, 0, 't'},
|
||||
{"protocol", required_argument, 0, 'P'},
|
||||
{"port", required_argument, 0, 'p'},
|
||||
{"escape", required_argument, 0, 'E'},
|
||||
{"send", required_argument, 0, 's'},
|
||||
{"expect", required_argument, 0, 'e'},
|
||||
{"maxbytes", required_argument, 0, 'm'},
|
||||
{"quit", required_argument, 0, 'q'},
|
||||
{"jail", required_argument, 0, 'j'},
|
||||
{"delay", required_argument, 0, 'd'},
|
||||
{"refuse", required_argument, 0, 'r'},
|
||||
{"mismatch", required_argument, 0, 'M'},
|
||||
{"use-ipv4", no_argument, 0, '4'},
|
||||
{"use-ipv6", no_argument, 0, '6'},
|
||||
{"verbose", no_argument, 0, 'v'},
|
||||
{"version", no_argument, 0, 'V'},
|
||||
{"help", no_argument, 0, 'h'},
|
||||
#ifdef HAVE_SSL
|
||||
{"ssl", no_argument, 0, 'S'},
|
||||
{"certificate", required_argument, 0, 'D'},
|
||||
#endif
|
||||
{0, 0, 0, 0}
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||||
};
|
||||
|
||||
if (argc < 2)
|
||||
usage4 (_("No arguments found"));
|
||||
|
||||
/* backwards compatibility */
|
||||
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");
|
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else if (strcmp ("-ct", argv[c]) == 0)
|
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strcpy (argv[c], "-c");
|
||||
}
|
||||
|
||||
if (!is_option (argv[1])) {
|
||||
server_address = argv[1];
|
||||
argv[1] = argv[0];
|
||||
argv = &argv[1];
|
||||
argc--;
|
||||
}
|
||||
|
||||
while (1) {
|
||||
c = getopt_long (argc, argv, "+hVv46EH:s:e:q:m:c:w:t:p:C:W:d:Sr:jD:M:",
|
||||
longopts, &option);
|
||||
|
||||
if (c == -1 || c == EOF || c == 1)
|
||||
break;
|
||||
|
||||
switch (c) {
|
||||
case '?': /* print short usage statement if args not parsable */
|
||||
usage2 (_("Unknown argument"), optarg);
|
||||
case 'h': /* help */
|
||||
print_help ();
|
||||
exit (STATE_OK);
|
||||
case 'V': /* version */
|
||||
print_revision (progname, revision);
|
||||
exit (STATE_OK);
|
||||
case 'v': /* verbose mode */
|
||||
flags |= FLAG_VERBOSE;
|
||||
break;
|
||||
case '4':
|
||||
address_family = AF_INET;
|
||||
break;
|
||||
case '6':
|
||||
#ifdef USE_IPV6
|
||||
address_family = AF_INET6;
|
||||
#else
|
||||
usage4 (_("IPv6 support not available"));
|
||||
#endif
|
||||
break;
|
||||
case 'H': /* hostname */
|
||||
server_address = optarg;
|
||||
break;
|
||||
case 'c': /* critical */
|
||||
critical_time = strtod (optarg, NULL);
|
||||
flags |= FLAG_TIME_CRIT;
|
||||
break;
|
||||
case 'j': /* hide output */
|
||||
flags |= FLAG_HIDE_OUTPUT;
|
||||
break;
|
||||
case 'w': /* warning */
|
||||
warning_time = strtod (optarg, NULL);
|
||||
flags |= FLAG_TIME_WARN;
|
||||
break;
|
||||
case 'C':
|
||||
crit_codes = realloc (crit_codes, ++crit_codes_count);
|
||||
crit_codes[crit_codes_count - 1] = optarg;
|
||||
break;
|
||||
case 'W':
|
||||
warn_codes = realloc (warn_codes, ++warn_codes_count);
|
||||
warn_codes[warn_codes_count - 1] = optarg;
|
||||
break;
|
||||
case 't': /* timeout */
|
||||
if (!is_intpos (optarg))
|
||||
usage4 (_("Timeout interval must be a positive integer"));
|
||||
else
|
||||
socket_timeout = atoi (optarg);
|
||||
break;
|
||||
case 'p': /* port */
|
||||
if (!is_intpos (optarg))
|
||||
usage4 (_("Port must be a positive integer"));
|
||||
else
|
||||
server_port = atoi (optarg);
|
||||
break;
|
||||
case 'E':
|
||||
escape = 1;
|
||||
break;
|
||||
case 's':
|
||||
if (escape)
|
||||
server_send = np_escaped_string(optarg);
|
||||
else
|
||||
asprintf(&server_send, "%s", optarg);
|
||||
break;
|
||||
case 'e': /* expect string (may be repeated) */
|
||||
EXPECT = NULL;
|
||||
flags &= ~FLAG_EXACT_MATCH;
|
||||
if (server_expect_count == 0)
|
||||
server_expect = malloc (sizeof (char *) * (++server_expect_count));
|
||||
else
|
||||
server_expect = realloc (server_expect, sizeof (char *) * (++server_expect_count));
|
||||
server_expect[server_expect_count - 1] = optarg;
|
||||
break;
|
||||
case 'm':
|
||||
if (!is_intpos (optarg))
|
||||
usage4 (_("Maxbytes must be a positive integer"));
|
||||
else
|
||||
maxbytes = strtol (optarg, NULL, 0);
|
||||
case 'q':
|
||||
if (escape)
|
||||
server_quit = np_escaped_string(optarg);
|
||||
else
|
||||
asprintf(&server_quit, "%s\r\n", optarg);
|
||||
break;
|
||||
case 'r':
|
||||
if (!strncmp(optarg,"ok",2))
|
||||
econn_refuse_state = STATE_OK;
|
||||
else if (!strncmp(optarg,"warn",4))
|
||||
econn_refuse_state = STATE_WARNING;
|
||||
else if (!strncmp(optarg,"crit",4))
|
||||
econn_refuse_state = STATE_CRITICAL;
|
||||
else
|
||||
usage4 (_("Refuse must be one of ok, warn, crit"));
|
||||
break;
|
||||
case 'M':
|
||||
if (!strncmp(optarg,"ok",2))
|
||||
expect_mismatch_state = STATE_OK;
|
||||
else if (!strncmp(optarg,"warn",4))
|
||||
expect_mismatch_state = STATE_WARNING;
|
||||
else if (!strncmp(optarg,"crit",4))
|
||||
expect_mismatch_state = STATE_CRITICAL;
|
||||
else
|
||||
usage4 (_("Mismatch must be one of ok, warn, crit"));
|
||||
break;
|
||||
case 'd':
|
||||
if (is_intpos (optarg))
|
||||
delay = atoi (optarg);
|
||||
else
|
||||
usage4 (_("Delay must be a positive integer"));
|
||||
break;
|
||||
case 'D': /* Check SSL cert validity - days 'til certificate expiration */
|
||||
#ifdef HAVE_SSL
|
||||
# ifdef USE_OPENSSL /* XXX */
|
||||
if (!is_intnonneg (optarg))
|
||||
usage2 (_("Invalid certificate expiration period"), optarg);
|
||||
days_till_exp = atoi (optarg);
|
||||
check_cert = TRUE;
|
||||
flags |= FLAG_SSL;
|
||||
break;
|
||||
# endif /* USE_OPENSSL */
|
||||
#endif
|
||||
/* fallthrough if we don't have ssl */
|
||||
case 'S':
|
||||
#ifdef HAVE_SSL
|
||||
flags |= FLAG_SSL;
|
||||
#else
|
||||
die (STATE_UNKNOWN, _("Invalid option - SSL is not available"));
|
||||
#endif
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (server_address == NULL)
|
||||
usage4 (_("You must provide a server address"));
|
||||
else if (server_address[0] != '/' && is_host (server_address) == FALSE)
|
||||
die (STATE_CRITICAL, "%s: %s - %s\n", progname, _("Invalid hostname, address or socket"), server_address);
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
print_help (void)
|
||||
{
|
||||
print_revision (progname, revision);
|
||||
|
||||
printf ("Copyright (c) 1999 Ethan Galstad <nagios@nagios.org>\n");
|
||||
printf (COPYRIGHT, copyright, email);
|
||||
|
||||
printf (_("This plugin tests %s connections with the specified host (or unix socket).\n\n"),
|
||||
SERVICE);
|
||||
|
||||
print_usage ();
|
||||
|
||||
printf (_(UT_HELP_VRSN));
|
||||
|
||||
printf (_(UT_HOST_PORT), 'p', "none");
|
||||
|
||||
printf (_(UT_IPv46));
|
||||
|
||||
printf (" %s\n", "-E, --escape");
|
||||
printf (" %s\n", _("Can use \\n, \\r, \\t or \\ in send or quit string."));
|
||||
printf (" %s\n", _("Default: nothing added to send, \\r\\n added to end of quit"));
|
||||
printf (" %s\n", "-s, --send=STRING");
|
||||
printf (" %s\n", _("String to send to the server"));
|
||||
printf (" %s\n", "-e, --expect=STRING");
|
||||
printf (" %s\n", _("String to expect in server response"));
|
||||
printf (" %s\n", "-q, --quit=STRING");
|
||||
printf (" %s\n", _("String to send server to initiate a clean close of the connection"));
|
||||
printf (" %s\n", "-r, --refuse=ok|warn|crit");
|
||||
printf (" %s\n", _("Accept tcp refusals with states ok, warn, crit (default: crit)"));
|
||||
printf (" %s\n", "-M, --mismatch=ok|warn|crit");
|
||||
printf (" %s\n", _("Accept expected string mismatches with states ok, warn, crit (default: warn)"));
|
||||
printf (" %s\n", "-j, --jail");
|
||||
printf (" %s\n", _("Hide output from TCP socket"));
|
||||
printf (" %s\n", "-m, --maxbytes=INTEGER");
|
||||
printf (" %s\n", _("Close connection once more than this number of bytes are received"));
|
||||
printf (" %s\n", "-d, --delay=INTEGER");
|
||||
printf (" %s\n", _("Seconds to wait between sending string and polling for response"));
|
||||
|
||||
#ifdef HAVE_SSL
|
||||
printf (" %s\n", "-D, --certificate=INTEGER");
|
||||
printf (" %s\n", _("Minimum number of days a certificate has to be valid."));
|
||||
printf (" %s\n", "-S, --ssl");
|
||||
printf (" %s\n", _("Use SSL for the connection."));
|
||||
#endif
|
||||
|
||||
printf (_(UT_WARN_CRIT));
|
||||
|
||||
printf (_(UT_TIMEOUT), DEFAULT_SOCKET_TIMEOUT);
|
||||
|
||||
printf (_(UT_VERBOSE));
|
||||
|
||||
printf (_(UT_SUPPORT));
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
print_usage (void)
|
||||
{
|
||||
printf (_("Usage:"));
|
||||
printf ("%s -H host -p port [-w <warning time>] [-c <critical time>] [-s <send string>]\n",progname);
|
||||
printf ("[-e <expect string>] [-q <quit string>][-m <maximum bytes>] [-d <delay>]\n");
|
||||
printf ("[-t <timeout seconds>] [-r <refuse state>] [-M <mismatch state>] [-v] [-4|-6] [-j]\n");
|
||||
printf ("[-D <days to cert expiry>] [-S <use SSL>] [-E]\n");
|
||||
}
|
||||
|
||||
Loading…
Add table
Add a link
Reference in a new issue