X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=plugins%2Fcheck_dig.c;h=4394490e8723ea0fe31c2a0a5d71ca1b0eb022b4;hb=f573447d1f6dbf25b58bbfea81226a2ae3736555;hp=f80a9dc2f145caec6c6eb265fe481e616fe6bf49;hpb=614071738f0edeedfa9731c5e3dd63e158bfbc7a;p=nagiosplug.git diff --git a/plugins/check_dig.c b/plugins/check_dig.c index f80a9dc..4394490 100644 --- a/plugins/check_dig.c +++ b/plugins/check_dig.c @@ -1,46 +1,30 @@ /***************************************************************************** -* -* 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. -* + + 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. + + $Id$ + *****************************************************************************/ const char *progname = "check_dig"; const char *revision = "$Revision$"; -const char *copyright = "2002-2003"; -const char *authors = "Nagios Plugin Development Team"; +const char *copyright = "2002-2004"; const char *email = "nagiosplug-devel@lists.sourceforge.net"; -const char *summary = "Test the DNS service on the specified host using dig\n"; - -const char *option_summary = "-H host -l lookup [-t timeout] [-v]"; -const char *options = "\ - -H, --hostname=STRING or IPADDRESS\n\ - Check server on the indicated host\n\ - -l, --lookup=STRING\n\ - machine name to lookup\n\ - -t, --timeout=INTEGER\n\ - Seconds before connection attempt times out (default: %d)\n\ - -v, --verbose\n\ - Print extra information (command-line use only)\n\ - -h, --help\n\ - Print detailed help screen\n\ - -V, --version\n\ - Print version information\n\n"; - -#include "config.h" #include "common.h" +#include "netutils.h" #include "utils.h" #include "popen.h" @@ -49,72 +33,115 @@ int validate_arguments (void); void print_help (void); void print_usage (void); +enum { + UNDEFINED = 0, + DEFAULT_PORT = 53 +}; + char *query_address = NULL; +char *record_type = "A"; +char *expected_address = NULL; char *dns_server = NULL; int verbose = FALSE; +int server_port = DEFAULT_PORT; +double warning_interval = UNDEFINED; +double critical_interval = UNDEFINED; +struct timeval tv; int main (int argc, char **argv) { char input_buffer[MAX_INPUT_BUFFER]; - char *command_line = NULL; - char *output = ""; + char *command_line; + char *output; + char *t; + long microsec; + double elapsed_time; int result = STATE_UNKNOWN; + output = strdup (""); + + setlocale (LC_ALL, ""); + bindtextdomain (PACKAGE, LOCALEDIR); + textdomain (PACKAGE); + /* Set signal handling and alarm */ if (signal (SIGALRM, popen_timeout_alarm_handler) == SIG_ERR) - usage ("Cannot catch SIGALRM\n"); + usage4 (_("Cannot catch SIGALRM")); - if (process_arguments (argc, argv) != OK) - usage ("Could not parse arguments\n"); + if (process_arguments (argc, argv) == ERROR) + usage4 (_("Could not parse arguments")); /* get the command to run */ - asprintf (&command_line, "%s @%s %s", PATH_TO_DIG, dns_server, query_address); + asprintf (&command_line, "%s @%s -p %d %s -t %s", + PATH_TO_DIG, dns_server, server_port, query_address, record_type); alarm (timeout_interval); - time (&start_time); + gettimeofday (&tv, NULL); - if (verbose) + if (verbose) { printf ("%s\n", command_line); + if(expected_address != NULL) { + printf (_("Looking for: '%s'\n"), expected_address); + } else { + printf (_("Looking for: '%s'\n"), query_address); + } + } + /* run the command */ child_process = spopen (command_line); if (child_process == NULL) { - printf ("Could not open pipe: %s\n", command_line); + printf (_("Could not open pipe: %s\n"), command_line); return 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); + printf (_("Could not open stderr for %s\n"), command_line); while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_process)) { /* the server is responding, we just got the host name... */ if (strstr (input_buffer, ";; ANSWER SECTION:")) { - /* get the host address */ - if (!fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_process)) - break; - - if (strpbrk (input_buffer, "\r\n")) - input_buffer[strcspn (input_buffer, "\r\n")] = '\0'; - - if (strstr (input_buffer, query_address) == input_buffer) { - asprintf (&output, input_buffer); - result = STATE_OK; - } - else { - asprintf (&output, "Server not found in ANSWER SECTION"); - result = STATE_WARNING; - } - - continue; + /* loop through the whole 'ANSWER SECTION' */ + do { + /* get the host address */ + if (!fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_process)) + break; + + if (strpbrk (input_buffer, "\r\n")) + input_buffer[strcspn (input_buffer, "\r\n")] = '\0'; + + if (verbose && !strstr (input_buffer, ";; ")) + printf ("%s\n", input_buffer); + + if (expected_address==NULL && strstr (input_buffer, query_address) != NULL) { + output = strdup(input_buffer); + result = STATE_OK; + } + else if (expected_address != NULL && strstr (input_buffer, expected_address) != NULL) { + output = strdup(input_buffer); + result = STATE_OK; + } + + /* Translate output TAB -> SPACE */ + t = output; + while ((t = index(t, '\t')) != NULL) + *t = ' '; + + } while (!strstr (input_buffer, ";; ")); + + if (result == STATE_UNKNOWN) { + asprintf (&output, _("Server not found in ANSWER SECTION")); + result = STATE_WARNING; + } } } - if (result != STATE_OK) { - asprintf (&output, "No ANSWER SECTION found"); + if (result == STATE_UNKNOWN) { + asprintf (&output, _("No ANSWER SECTION found")); } while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_stderr)) { @@ -122,7 +149,7 @@ main (int argc, char **argv) result = max_state (result, STATE_WARNING); printf ("%s", input_buffer); if (strlen (output) == 0) - asprintf (&output, 1 + index (input_buffer, ':')); + output = strdup (1 + index (input_buffer, ':')); } (void) fclose (child_stderr); @@ -131,40 +158,54 @@ main (int argc, char **argv) if (spclose (child_process)) { result = max_state (result, STATE_WARNING); if (strlen (output) == 0) - asprintf (&output, "dig returned error status"); + asprintf (&output, _("dig returned an error status")); } - (void) time (&end_time); + microsec = deltime (tv); + elapsed_time = (double)microsec / 1.0e6; if (output == NULL || strlen (output) == 0) - asprintf (&output, " Probably a non-existent host/domain"); - - if (result == STATE_OK) - printf ("DNS OK - %d seconds response time (%s)\n", - (int) (end_time - start_time), output); - else if (result == STATE_WARNING) - printf ("DNS WARNING - %s\n", output); - else if (result == STATE_CRITICAL) - printf ("DNS CRITICAL - %s\n", output); - else - printf ("DNS problem - %s\n", output); + asprintf (&output, _(" Probably a non-existent host/domain")); + if (critical_interval > UNDEFINED && elapsed_time > critical_interval) + result = STATE_CRITICAL; + + else if (warning_interval > UNDEFINED && elapsed_time > warning_interval) + result = STATE_WARNING; + + asprintf (&output, _("%.3f seconds response time (%s)"), elapsed_time, output); + + printf ("DNS %s - %s|%s\n", + state_text (result), output, + fperfdata("time", elapsed_time, "s", + (warning_interval>UNDEFINED?TRUE:FALSE), + warning_interval, + (critical_interval>UNDEFINED?TRUE:FALSE), + critical_interval, + TRUE, 0, FALSE, 0)); return result; } + + /* process command-line arguments */ int process_arguments (int argc, char **argv) { int c; - int option_index = 0; - static struct option long_options[] = { + int option = 0; + static struct option longopts[] = { {"hostname", required_argument, 0, 'H'}, - {"query_address", required_argument, 0, 'e'}, + {"query_address", required_argument, 0, 'l'}, + {"warning", required_argument, 0, 'w'}, + {"critical", required_argument, 0, 'c'}, + {"timeout", required_argument, 0, 't'}, {"verbose", no_argument, 0, 'v'}, {"version", no_argument, 0, 'V'}, {"help", no_argument, 0, 'h'}, + {"record_type", required_argument, 0, 'T'}, + {"expected_address", required_argument, 0, 'a'}, {0, 0, 0, 0} }; @@ -172,42 +213,72 @@ process_arguments (int argc, char **argv) return ERROR; while (1) { - c = getopt_long (argc, argv, "hVvt:l:H:", long_options, &option_index); + c = getopt_long (argc, argv, "hVvt:l:H:w:c:T:a:", longopts, &option); if (c == -1 || c == EOF) break; switch (c) { case '?': /* help */ - usage3 ("Unknown argument", optopt); + usage2 (_("Unknown argument"), optarg); + case 'h': /* help */ + print_help (); + exit (STATE_OK); + case 'V': /* version */ + print_revision (progname, revision); + exit (STATE_OK); case 'H': /* hostname */ if (is_host (optarg)) { dns_server = optarg; } else { - usage ("Invalid host name\n"); + usage2 (_("Invalid hostname/address"), optarg); + } + break; + case 'p': /* server port */ + if (is_intpos (optarg)) { + server_port = atoi (optarg); + } + else { + usage2 (_("Port must be a positive integer"), optarg); } break; - case 'l': /* username */ + case 'l': /* address to lookup */ query_address = optarg; break; - case 'v': /* verbose */ - verbose = TRUE; + case 'w': /* warning */ + if (is_nonnegative (optarg)) { + warning_interval = strtod (optarg, NULL); + } + else { + usage2 (_("Warning interval must be a positive integer"), optarg); + } + break; + case 'c': /* critical */ + if (is_nonnegative (optarg)) { + critical_interval = strtod (optarg, NULL); + } + else { + usage2 (_("Critical interval must be a positive integer"), optarg); + } break; case 't': /* timeout */ if (is_intnonneg (optarg)) { timeout_interval = atoi (optarg); } else { - usage ("Time interval must be a nonnegative integer\n"); + usage2 (_("Timeout interval must be a positive integer"), optarg); } break; - case 'V': /* version */ - print_revision (progname, "$Revision$"); - exit (STATE_OK); - case 'h': /* help */ - print_help (); - exit (STATE_OK); + case 'v': /* verbose */ + verbose = TRUE; + break; + case 'T': + record_type = optarg; + break; + case 'a': + expected_address = optarg; + break; } } @@ -218,7 +289,7 @@ process_arguments (int argc, char **argv) dns_server = argv[c]; } else { - usage ("Invalid host name"); + usage2 (_("Invalid hostname/address"), argv[c]); } } else { @@ -231,8 +302,6 @@ process_arguments (int argc, char **argv) - - int validate_arguments (void) { @@ -241,29 +310,55 @@ validate_arguments (void) - - void print_help (void) { + char *myport; + + asprintf (&myport, "%d", DEFAULT_PORT); + print_revision (progname, revision); - printf - ("Copyright (c) %s %s <%s>\n\n%s\n", - copyright, authors, email, summary); + + printf ("Copyright (c) 2000 Karl DeBisschop \n"); + printf (COPYRIGHT, copyright, email); + + printf (_("Test the DNS service on the specified host using dig\n\n")); + print_usage (); - printf ("\nOptions:\n"); - printf (options, DEFAULT_SOCKET_TIMEOUT); - support (); -} + printf (_(UT_HELP_VRSN)); + + printf (_(UT_HOST_PORT), 'P', myport); + printf (_("\ + -l, --lookup=STRING\n\ + machine name to lookup\n")); + + printf (_("\ + -T, --record_type=STRING\n\ + record type to lookup (default: A)\n")); + + printf (_("\ + -a, --expected_address=STRING\n\ + an address expected to be in the answer section.\n\ + if not set, uses whatever was in -l\n")); + + printf (_(UT_WARN_CRIT)); + + printf (_(UT_TIMEOUT), DEFAULT_SOCKET_TIMEOUT); + + printf (_(UT_VERBOSE)); + + printf (_(UT_SUPPORT)); +} void print_usage (void) { - printf ("Usage: %s %s\n", progname, option_summary); - printf (" %s (-h|--help)\n", progname); - printf (" %s (-V|--version)\n", progname); + printf ("\ +Usage: %s -H host -l lookup [-p ] [-T ]\n\ + [-w ] [-c ] [-t ]\n\ + [-a ] [-v]\n", progname); }