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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-13 11:48:22 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-13 11:48:22 +0000 |
commit | 7373ce3d6988706388f136e1c06afd20a3e8d5be (patch) | |
tree | e9ae5af7d102667e5706187646db45de8238e8c4 /plugins/negate.c | |
parent | Initial commit. (diff) | |
download | monitoring-plugins-7373ce3d6988706388f136e1c06afd20a3e8d5be.tar.xz monitoring-plugins-7373ce3d6988706388f136e1c06afd20a3e8d5be.zip |
Adding upstream version 2.3.5.upstream/2.3.5upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'plugins/negate.c')
-rw-r--r-- | plugins/negate.c | 275 |
1 files changed, 275 insertions, 0 deletions
diff --git a/plugins/negate.c b/plugins/negate.c new file mode 100644 index 0000000..50f62d3 --- /dev/null +++ b/plugins/negate.c @@ -0,0 +1,275 @@ +/***************************************************************************** +* +* Monitoring negate plugin +* +* License: GPL +* Copyright (c) 2002-2008 Monitoring Plugins Development Team +* +* Description: +* +* This file contains the negate plugin +* +* Negates the status of a plugin (returns OK for CRITICAL, and vice-versa). +* Can also perform custom state switching. +* +* +* 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 3 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, see <http://www.gnu.org/licenses/>. +* +* +*****************************************************************************/ + +const char *progname = "negate"; +const char *copyright = "2002-2008"; +const char *email = "devel@monitoring-plugins.org"; + +#define DEFAULT_TIMEOUT 11 + +#include "common.h" +#include "utils.h" +#include "utils_cmd.h" + +#include <ctype.h> + +/* char *command_line; */ + +static const char **process_arguments (int, char **); +void validate_arguments (char **); +void print_help (void); +void print_usage (void); +int subst_text = FALSE; + +static int state[4] = { + STATE_OK, + STATE_WARNING, + STATE_CRITICAL, + STATE_UNKNOWN, +}; + +int +main (int argc, char **argv) +{ + int result = STATE_UNKNOWN; + char *sub; + char **command_line; + output chld_out, chld_err; + int i; + + setlocale (LC_ALL, ""); + bindtextdomain (PACKAGE, LOCALEDIR); + textdomain (PACKAGE); + + timeout_interval = DEFAULT_TIMEOUT; + + command_line = (char **) process_arguments (argc, argv); + + /* Set signal handling and alarm */ + if (signal (SIGALRM, timeout_alarm_handler) == SIG_ERR) + die (STATE_UNKNOWN, _("Cannot catch SIGALRM")); + + (void) alarm ((unsigned) timeout_interval); + + /* catch when the command is quoted */ + if(command_line[1] == NULL) { + result = cmd_run (command_line[0], &chld_out, &chld_err, 0); + } else { + result = cmd_run_array (command_line, &chld_out, &chld_err, 0); + } + if (chld_err.lines > 0) { + for (i = 0; i < chld_err.lines; i++) { + fprintf (stderr, "%s\n", chld_err.line[i]); + } + } + + /* Return UNKNOWN or worse if no output is returned */ + if (chld_out.lines == 0) + die (max_state_alt (result, STATE_UNKNOWN), _("No data returned from command\n")); + + for (i = 0; i < chld_out.lines; i++) { + if (subst_text && result >= 0 && result <= 4 && result != state[result]) { + /* Loop over each match found */ + while ((sub = strstr (chld_out.line[i], state_text (result)))) { + /* Terminate the first part and skip over the string we'll substitute */ + *sub = '\0'; + sub += strlen (state_text (result)); + /* then put everything back together */ + xasprintf (&chld_out.line[i], "%s%s%s", chld_out.line[i], state_text (state[result]), sub); + } + } + printf ("%s\n", chld_out.line[i]); + } + + if (result >= 0 && result <= 4) { + exit (state[result]); + } else { + exit (result); + } +} + + +/* process command-line arguments */ +static const char ** +process_arguments (int argc, char **argv) +{ + int c; + int permute = TRUE; + + int option = 0; + static struct option longopts[] = { + {"help", no_argument, 0, 'h'}, + {"version", no_argument, 0, 'V'}, + {"timeout", required_argument, 0, 't'}, + {"timeout-result", required_argument, 0, 'T'}, + {"ok", required_argument, 0, 'o'}, + {"warning", required_argument, 0, 'w'}, + {"critical", required_argument, 0, 'c'}, + {"unknown", required_argument, 0, 'u'}, + {"substitute", no_argument, 0, 's'}, + {0, 0, 0, 0} + }; + + while (1) { + c = getopt_long (argc, argv, "+hVt:T:o:w:c:u:s", longopts, &option); + + if (c == -1 || c == EOF) + break; + + switch (c) { + case '?': /* help */ + usage5 (); + break; + case 'h': /* help */ + print_help (); + exit (EXIT_SUCCESS); + break; + case 'V': /* version */ + print_revision (progname, NP_VERSION); + exit (EXIT_SUCCESS); + case 't': /* timeout period */ + if (!is_integer (optarg)) + usage2 (_("Timeout interval must be a positive integer"), optarg); + else + timeout_interval = atoi (optarg); + break; + case 'T': /* Result to return on timeouts */ + if ((timeout_state = mp_translate_state(optarg)) == ERROR) + usage4 (_("Timeout result must be a valid state name (OK, WARNING, CRITICAL, UNKNOWN) or integer (0-3).")); + break; + case 'o': /* replacement for OK */ + if ((state[STATE_OK] = mp_translate_state(optarg)) == ERROR) + usage4 (_("Ok must be a valid state name (OK, WARNING, CRITICAL, UNKNOWN) or integer (0-3).")); + permute = FALSE; + break; + + case 'w': /* replacement for WARNING */ + if ((state[STATE_WARNING] = mp_translate_state(optarg)) == ERROR) + usage4 (_("Warning must be a valid state name (OK, WARNING, CRITICAL, UNKNOWN) or integer (0-3).")); + permute = FALSE; + break; + case 'c': /* replacement for CRITICAL */ + if ((state[STATE_CRITICAL] = mp_translate_state(optarg)) == ERROR) + usage4 (_("Critical must be a valid state name (OK, WARNING, CRITICAL, UNKNOWN) or integer (0-3).")); + permute = FALSE; + break; + case 'u': /* replacement for UNKNOWN */ + if ((state[STATE_UNKNOWN] = mp_translate_state(optarg)) == ERROR) + usage4 (_("Unknown must be a valid state name (OK, WARNING, CRITICAL, UNKNOWN) or integer (0-3).")); + permute = FALSE; + break; + case 's': /* Substitute status text */ + subst_text = TRUE; + break; + } + } + + validate_arguments (&argv[optind]); + + if (permute) { /* No [owcu] switch specified, default to this */ + state[STATE_OK] = STATE_CRITICAL; + state[STATE_CRITICAL] = STATE_OK; + } + + return (const char **) &argv[optind]; +} + + +void +validate_arguments (char **command_line) +{ + if (command_line[0] == NULL) + usage4 (_("Could not parse arguments")); + + if (strncmp(command_line[0],"/",1) != 0 && strncmp(command_line[0],"./",2) != 0) + usage4 (_("Require path to command")); +} + + +void +print_help (void) +{ + print_revision (progname, NP_VERSION); + + printf (COPYRIGHT, copyright, email); + + printf ("%s\n", _("Negates the status of a plugin (returns OK for CRITICAL and vice-versa).")); + printf ("%s\n", _("Additional switches can be used to control which state becomes what.")); + + printf ("\n\n"); + + print_usage (); + + printf (UT_HELP_VRSN); + + printf (UT_PLUG_TIMEOUT, timeout_interval); + printf (" %s\n", _("Keep timeout longer than the plugin timeout to retain CRITICAL status.")); + printf (" -T, --timeout-result=STATUS\n"); + printf (" %s\n", _("Custom result on Negate timeouts; see below for STATUS definition\n")); + + printf(" -o, --ok=STATUS\n"); + printf(" -w, --warning=STATUS\n"); + printf(" -c, --critical=STATUS\n"); + printf(" -u, --unknown=STATUS\n"); + printf(_(" STATUS can be 'OK', 'WARNING', 'CRITICAL' or 'UNKNOWN' without single\n")); + printf(_(" quotes. Numeric values are accepted. If nothing is specified, permutes\n")); + printf(_(" OK and CRITICAL.\n")); + printf(" -s, --substitute\n"); + printf(_(" Substitute output text as well. Will only substitute text in CAPITALS\n")); + + printf ("\n"); + printf ("%s\n", _("Examples:")); + printf (" %s\n", "negate /usr/local/nagios/libexec/check_ping -H host"); + printf (" %s\n", _("Run check_ping and invert result. Must use full path to plugin")); + printf (" %s\n", "negate -w OK -c UNKNOWN /usr/local/nagios/libexec/check_procs -a 'vi negate.c'"); + printf (" %s\n", _("This will return OK instead of WARNING and UNKNOWN instead of CRITICAL")); + printf ("\n"); + printf ("%s\n", _("Notes:")); + printf (" %s\n", _("This plugin is a wrapper to take the output of another plugin and invert it.")); + printf (" %s\n", _("The full path of the plugin must be provided.")); + printf (" %s\n", _("If the wrapped plugin returns OK, the wrapper will return CRITICAL.")); + printf (" %s\n", _("If the wrapped plugin returns CRITICAL, the wrapper will return OK.")); + printf (" %s\n", _("Otherwise, the output state of the wrapped plugin is unchanged.")); + printf ("\n"); + printf (" %s\n", _("Using timeout-result, it is possible to override the timeout behaviour or a")); + printf (" %s\n", _("plugin by setting the negate timeout a bit lower.")); + + printf (UT_SUPPORT); +} + + + +void +print_usage (void) +{ + printf ("%s\n", _("Usage:")); + printf ("%s [-t timeout] [-Towcu STATE] [-s] <definition of wrapped plugin>\n", progname); +} |