From 078651b1bd375fe31afea11404ce091f75bad6d1 Mon Sep 17 00:00:00 2001 From: Karl DeBisschop Date: Sun, 8 Sep 2002 12:05:47 +0000 Subject: wrapper to invert return status git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@94 f882894a-f735-0410-b71e-b25c423dba1c diff --git a/plugins/negate.c b/plugins/negate.c new file mode 100644 index 0000000..b6effe3 --- /dev/null +++ b/plugins/negate.c @@ -0,0 +1,299 @@ +/****************************************************************************** + * + * Program: Inverting plugin wrapper for Nagios + * License: GPL + * + * 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. + * + * $Id$ + * + *****************************************************************************/ + +#define PROGNAME "negate" +#define REVISION "$Revision$" +#define COPYRIGHT "2002" +#define AUTHOR "Karl DeBisschop" +#define EMAIL "kdebisschop@users.sourceforge.net" +#define SUMMARY "Negates the status of a plugin (returns OK for CRITICAL, and vice-versa).\n" + +#define OPTIONS "\ +\[-t timeout] " + +#define LONGOPTIONS "\ + -t, --timeout=INTEGER\n\ + Terminate test if timeout limit is exceeded (default: %d)\n\ + [keep this less than the plugin timeout to retain CRITICAL status]\n" + +#define DESCRIPTION "\ +This plugin is a wrapper to take the output of another plugin and invert it.\n\ +If the wrapped plugin returns STATE_OK, the wrapper will return STATE_CRITICAL.\n\ +If the wrapped plugin returns STATE_CRITICAL, the wrapper will return STATE_OK.\n\ +Otherwise, the output state of the wrapped plugin is unchanged.\n" + +#define DEFAULT_TIMEOUT 9 + +#include "common.h" +#include "utils.h" +#include "popen.h" + +char *command_line; + +static int process_arguments (int, char **); +static int validate_arguments (void); +static void print_usage (void); +static void print_help (void); + +/****************************************************************************** + +The (psuedo?)literate programming XML is contained within \@\@\- \-\@\@ +tags in the comments. With in the tags, the XML is assembled sequentially. +You can define entities in tags. You also have all the #defines available as +entities. + +Please note that all tags must be lowercase to use the DocBook XML DTD. + +@@-
+ + +Quick Reference + + + +5 + + +&PROGNAME; +&SUMMARY; + + + + + +FAQ + + + +Theory, Installation, and Operation + + +General Description + +&DESCRIPTION; + + + + +Future Enhancements +ToDo List + +Add option to do regex substitution in output text + + + + + +Functions +-@@ +******************************************************************************/ + +int +main (int argc, char **argv) +{ + int found = 0, result = STATE_UNKNOWN; + char input_buffer[MAX_INPUT_BUFFER]; + + if (process_arguments (argc, argv) == ERROR) + usage ("Could not parse arguments"); + + /* Set signal handling and alarm */ + if (signal (SIGALRM, timeout_alarm_handler) == SIG_ERR) { + printf ("Cannot catch SIGALRM"); + return STATE_UNKNOWN; + } + alarm (timeout_interval); + + child_process = spopen (command_line); + if (child_process == NULL) { + printf ("Could not open pipe: %s\n", command_line); + exit (STATE_UNKNOWN); + } + + child_stderr = fdopen (child_stderr_array[fileno (child_process)], "r"); + if (child_stderr == NULL) { + printf ("Could not open stderr for %s\n", command_line); + } + + while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_process)) { + found++; + if (index (input_buffer, '\n')) { + input_buffer[strcspn (input_buffer, "\n")] = 0; + printf ("%s\n", input_buffer); + } + else { + printf ("%s\n", input_buffer); + } + } + + if (!found) { + printf ("%s problem - No data recieved from host\nCMD: %s\n", argv[0], + command_line); + exit (STATE_UNKNOWN); + } + + /* close the pipe */ + result = spclose (child_process); + + /* WARNING if output found on stderr */ + if (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_stderr)) + result = max_state (result, STATE_WARNING); + + /* close stderr */ + (void) fclose (child_stderr); + + if (result == STATE_OK) + return STATE_CRITICAL; + else if (result == STATE_CRITICAL) + return STATE_OK; + else + return result; +} + + + + +void +print_help (void) +{ + print_revision (PROGNAME, REVISION); + printf + ("Copyright (c) %s %s <%s>\n\n%s\n", + COPYRIGHT, AUTHOR, EMAIL, SUMMARY); + print_usage (); + printf + ("\nOptions:\n" LONGOPTIONS "\n" DESCRIPTION "\n", + DEFAULT_TIMEOUT); + support (); +} + +void +print_usage (void) +{ + printf ("Usage:\n" " %s %s\n" +#ifdef HAVE_GETOPT_H + " %s (-h | --help) for detailed help\n" + " %s (-V | --version) for version information\n", +#else + " %s -h for detailed help\n" + " %s -V for version information\n", +#endif + PROGNAME, OPTIONS, PROGNAME, PROGNAME); +} + + + +/****************************************************************************** +@@- + +process_arguments + +This function parses the command line into the needed +variables. + +Aside from the standard 'help' and 'version' options, there +is a only a 'timeout' option.No validation is currently done. + + +-@@ +******************************************************************************/ + +/* process command-line arguments */ +int +process_arguments (int argc, char **argv) +{ + int c; + +#ifdef HAVE_GETOPT_H + int option_index = 0; + static struct option long_options[] = { + {"help", no_argument, 0, 'h'}, + {"version", no_argument, 0, 'V'}, + {"timeout", required_argument, 0, 't'}, + {0, 0, 0, 0} + }; +#endif + + while (1) { +#ifdef HAVE_GETOPT_H + c = getopt_long (argc, argv, "+?hVt:", + long_options, &option_index); +#else + c = getopt (argc, argv, "+?hVt:"); +#endif + if (c == -1 || c == EOF) + break; + + switch (c) { + case '?': /* help */ + usage2 ("Unknown argument", optarg); + case 'h': /* help */ + print_help (); + exit (STATE_OK); + case 'V': /* version */ + print_revision (PROGNAME, REVISION); + exit (STATE_OK); + case 't': /* timeout period */ + if (!is_integer (optarg)) + usage2 ("Timeout Interval must be an integer", optarg); + timeout_interval = atoi (optarg); + break; + } + } + + command_line = strscpy (command_line, argv[optind]); + for (c = optind+1; c <= argc; c++) { + command_line = ssprintf (command_line, "%s %s", command_line, argv[c]); + } + + return validate_arguments (); +} + + +/****************************************************************************** +@@- + +validate_arguments + +No validation is currently done. + + +-@@ +******************************************************************************/ + +int +validate_arguments () +{ + return OK; +} + + +/****************************************************************************** +@@- + + +
+-@@ +******************************************************************************/ -- cgit v0.10-9-g596f