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_imap.c | 340 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 340 insertions(+) create mode 100644 plugins/check_imap.c (limited to 'plugins/check_imap.c') diff --git a/plugins/check_imap.c b/plugins/check_imap.c new file mode 100644 index 00000000..5ec0439b --- /dev/null +++ b/plugins/check_imap.c @@ -0,0 +1,340 @@ +/****************************************************************************** +* +* CHECK_IMAP.C +* +* Program: IMAP4 plugin for Nagios +* License: GPL +* Copyright (c) 1999 Tom Shields (tom.shields@basswood.com) +* +* $Id$ +* +* Description: +* +* This plugin will attempt to open an IMAP 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. +* +* Modifications: +* 04-13-1999 Tom Shields +* Initial code +* 08-18-1999 Ethan Galstad +* Modified code to work with common plugin functions, added socket +* timeout, string * length checking +* 09-19-1999 Ethan Galstad +* Changed expect string from "+OK" to "* OK" and default port to 143 +*****************************************************************************/ + +#include "config.h" +#include "common.h" +#include "netutils.h" +#include "utils.h" + +#define PROGNAME "check_imap" + +#define PORT 143 +#define EXPECT "* OK" +#define QUIT "a1 LOGOUT\n" + +int process_arguments (int, char **); +int call_getopt (int, char **); +int validate_arguments (void); +int check_disk (int usp, int free_disk); +void print_help (void); +void print_usage (void); + +int server_port = 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) != OK) + usage ("Invalid command arguments supplied\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 IMAP connection string */ + result = recv (sd, buffer, MAX_INPUT_BUFFER - 1, 0); + + /* strip carriange 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 == server_port) + printf ("Invalid IMAP response received from host\n"); + else + printf ("Invalid IMAP response received from host on port %d\n", + server_port); + result = STATE_WARNING; + } + + else { + time (&end_time); + printf ("IMAP ok - %d second response time\n", + (int) (end_time - start_time)); + result = STATE_OK; + } + } + + /* close the connection */ + send (sd, QUIT, strlen (QUIT), 0); + close (sd); + } + + /* reset the alarm handler */ + alarm (0); + + return result; +} + + + + + +/* process command-line arguments */ +int +process_arguments (int argc, char **argv) +{ + int c; + + if (argc < 2) + return ERROR; + + 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 (is_host (argv[c])) { + server_address = argv[c]; + } + else { + usage ("Invalid host name"); + } + } + } + + if (server_address == NULL) + server_address = strscpy (NULL, "127.0.0.1"); + + if (server_expect == NULL) + server_expect = strscpy (NULL, EXPECT); + + return validate_arguments (); +} + + + + + + +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'}, + {"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, "+hVvt:p:e:c:w:H:", long_options, + &option_index); +#else + c = getopt (argc, argv, "+?hVvt:p:e:c:w:H:"); +#endif + + i++; + + if (c == -1 || c == EOF || c == 1) + break; + + switch (c) { + case 't': + case 'p': + case 'e': + case 'c': + case 'w': + case 'H': + i++; + } + + switch (c) { + case 'H': /* hostname */ + if (is_host (optarg)) { + server_address = optarg; + } + else { + usage ("Invalid host name\n"); + } + break; + case 'p': /* port */ + if (is_intpos (optarg)) { + server_port = atoi (optarg); + } + else { + usage ("Server port must be a positive integer\n"); + } + break; + case 'e': /* username */ + server_expect = optarg; + break; + case 'c': /* critical time threshold */ + if (is_intnonneg (optarg)) { + critical_time = atoi (optarg); + check_critical_time = TRUE; + } + else { + usage ("Critical time must be a nonnegative integer\n"); + } + break; + case 'w': /* warning time threshold */ + if (is_intnonneg (optarg)) { + warning_time = atoi (optarg); + check_warning_time = TRUE; + } + else { + usage ("Warning time must be a nonnegative integer\n"); + } + break; + case 'v': /* verbose */ + verbose = TRUE; + break; + case 't': /* timeout */ + if (is_intnonneg (optarg)) { + socket_timeout = atoi (optarg); + } + else { + usage ("Time interval must be a nonnegative integer\n"); + } + break; + case 'V': /* version */ + print_revision (PROGNAME, "$Revision$"); + exit (STATE_OK); + case 'h': /* help */ + print_help (); + exit (STATE_OK); + case '?': /* help */ + usage ("Invalid argument\n"); + } + } + return i; +} + + + + + +int +validate_arguments (void) +{ + return OK; +} + + + + + +void +print_help (void) +{ + print_revision (PROGNAME, "$Revision$"); + printf + ("Copyright (c) 2000 Tom Shields/Karl DeBisschop\n\n" + "This plugin tests the IMAP4 service on the specified host.\n\n"); + print_usage (); + printf + ("\nOptions:\n" + " -H, --hostname=STRING or IPADDRESS\n" + " Check server on the indicated host\n" + " -p, --port=INTEGER\n" + " Make connection on the indicated port (default: %d)\n" + " -e, --expect=STRING\n" + " String to expect in first line of server response (default: %s)\n" + " -w, --warning=INTEGER\n" + " Seconds necessary to result in a warning status\n" + " -c, --critical=INTEGER\n" + " Seconds necessary to result in a critical status\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", + PORT, EXPECT, DEFAULT_SOCKET_TIMEOUT); + support (); +} + + + + + +void +print_usage (void) +{ + printf + ("Usage: %s -H host [-e expect] [-p port] [-w warn] [-c crit]\n" + " [-t timeout] [-v]\n" + " %s --help\n" + " %s --version\n", PROGNAME, PROGNAME, PROGNAME); +} -- cgit v1.2.3