![[tokkee]](http://tokkee.org/images/avatar.png){kind=avatar}
diff --git a/plugins/check_smtp.c b/plugins/check_smtp.c
index 2c03874b1f332020e96f6abb42e2ba9d4eac4708..c0ddc70326231fd23eb6b42207354b52b63ca7de 100644 (file)
--- a/plugins/check_smtp.c
+++ b/plugins/check_smtp.c
/******************************************************************************
-*
-* CHECK_SMTP.C
-*
-* Program: SMTP plugin for Nagios
-* License: GPL
-* Copyright (c) 1999 Ethan Galstad (nagios@nagios.org)
-*
-* $Id$
-*
-* Description:
-*
-* This plugin will attempt to open an SMTP 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.
-*
-* 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.
-*
-*****************************************************************************/
-
-#include "config.h"
+
+ 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_smtp";
+const char *revision = "$Revision$";
+const char *copyright = "2000-2004";
+const char *email = "nagiosplug-devel@lists.sourceforge.net";
+
#include "common.h"
#include "netutils.h"
#include "utils.h"
-#define PROGNAME "check_smtp"
-
-#define SMTP_PORT 25
-#define SMTP_EXPECT "220"
-/* sendmail will syslog a "NOQUEUE" error if session does not attempt
- * to do something useful. This can be prevented by giving a command
- * even if syntax is illegal (MAIL requires a FROM:<...> argument)
- * You can disable sending DUMMYCMD by undefining SMTP_USE_DUMMYCMD.
- */
-#define SMTP_DUMMYCMD "MAIL\n"
-#define SMTP_USE_DUMMYCMD 1
-#define SMTP_QUIT "QUIT\n"
+enum {
+ SMTP_PORT = 25
+};
+const char *SMTP_EXPECT = "220";
+const char *SMTP_HELO = "HELO ";
+const char *SMTP_QUIT = "QUIT\r\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);
+#ifdef HAVE_REGEX_H
+#include <regex.h>
+char regex_expect[MAX_INPUT_BUFFER] = "";
+regex_t preg;
+regmatch_t pmatch[10];
+char timestamp[10] = "";
+char errbuf[MAX_INPUT_BUFFER];
+int cflags = REG_EXTENDED | REG_NOSUB | REG_NEWLINE;
+int eflags = 0;
+int errcode, excode;
+#endif
+
int server_port = SMTP_PORT;
char *server_address = NULL;
char *server_expect = NULL;
+int smtp_use_dummycmd = 0;
+char *mail_command = NULL;
+char *from_arg = NULL;
+int ncommands=0;
+int command_size=0;
+int nresponses=0;
+int response_size=0;
+char **commands = NULL;
+char **responses = NULL;
int warning_time = 0;
int check_warning_time = FALSE;
int critical_time = 0;
int check_critical_time = FALSE;
-int verbose = FALSE;
+int verbose = 0;
+
+
int
main (int argc, char **argv)
{
int sd;
- int result;
- char buffer[MAX_INPUT_BUFFER] = "";
+ int n = 0;
+ double elapsed_time;
+ long microsec;
+ int result = STATE_UNKNOWN;
+ char buffer[MAX_INPUT_BUFFER];
+ char *cmd_str = NULL;
+ char *helocmd = NULL;
+ struct timeval tv;
+
+ setlocale (LC_ALL, "");
+ bindtextdomain (PACKAGE, LOCALEDIR);
+ textdomain (PACKAGE);
+
+ if (process_arguments (argc, argv) != TRUE)
+ usage4 (_("Could not parse arguments"));
+
+ /* initialize the HELO command with the localhostname */
+#ifndef HOST_MAX_BYTES
+#define HOST_MAX_BYTES 255
+#endif
+ helocmd = malloc (HOST_MAX_BYTES);
+ gethostname(helocmd, HOST_MAX_BYTES);
+ asprintf (&helocmd, "%s%s%s", SMTP_HELO, helocmd, "\r\n");
- if (process_arguments (argc, argv) != OK)
- usage ("Invalid command arguments supplied\n");
+ /* initialize the MAIL command with optional FROM command */
+ asprintf (&cmd_str, "%sFROM: %s%s", mail_command, from_arg, "\r\n");
+ if (verbose && smtp_use_dummycmd)
+ printf ("FROM CMD: %s", cmd_str);
+
/* initialize alarm signal handling */
- signal (SIGALRM, socket_timeout_alarm_handler);
+ (void) signal (SIGALRM, socket_timeout_alarm_handler);
/* set socket timeout */
- alarm (socket_timeout);
+ (void) alarm (socket_timeout);
+
+ /* start timer */
+ gettimeofday (&tv, NULL);
/* 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 SMTP connection string */
- result = recv (sd, buffer, MAX_INPUT_BUFFER - 1, 0);
-
- /* strip the buffer of carriage returns */
- strip (buffer);
+ if (result == STATE_OK) { /* we connected */
+ /* watch for the SMTP connection string and */
/* return a WARNING status if we couldn't read any data */
- if (result == -1) {
- printf ("recv() failed\n");
+ if (recv (sd, buffer, MAX_INPUT_BUFFER - 1, 0) == -1) {
+ printf (_("recv() failed\n"));
result = STATE_WARNING;
}
-
else {
-
+ if (verbose)
+ printf ("%s", buffer);
+ /* strip the buffer of carriage returns */
+ strip (buffer);
/* make sure we find the response we are looking for */
if (!strstr (buffer, server_expect)) {
if (server_port == SMTP_PORT)
- printf ("Invalid SMTP response received from host\n");
+ printf (_("Invalid SMTP response received from host\n"));
else
- printf ("Invalid SMTP response received from host on port %d\n",
+ printf (_("Invalid SMTP response received from host on port %d\n"),
server_port);
result = STATE_WARNING;
}
+ }
- else {
-
- time (&end_time);
-
- result = STATE_OK;
-
- if (check_critical_time == TRUE
- && (end_time - start_time) > critical_time) result =
- STATE_CRITICAL;
- else if (check_warning_time == TRUE
- && (end_time - start_time) > warning_time) result =
- STATE_WARNING;
+ /* send the HELO command */
+ send(sd, helocmd, strlen(helocmd), 0);
+
+ /* allow for response to helo command to reach us */
+ recv(sd, buffer, MAX_INPUT_BUFFER-1, 0);
+
+ /* sendmail will syslog a "NOQUEUE" error if session does not attempt
+ * to do something useful. This can be prevented by giving a command
+ * even if syntax is illegal (MAIL requires a FROM:<...> argument)
+ *
+ * According to rfc821 you can include a null reversepath in the from command
+ * - but a log message is generated on the smtp server.
+ *
+ * You can disable sending mail_command with '--nocommand'
+ * Use the -f option to provide a FROM address
+ */
+ if (smtp_use_dummycmd) {
+ send(sd, cmd_str, strlen(cmd_str), 0);
+ recv(sd, buffer, MAX_INPUT_BUFFER-1, 0);
+ if (verbose)
+ printf("%s", buffer);
+ }
- if (verbose == TRUE)
- printf ("SMTP %s - %d sec. response time, %s\n",
- state_text (result), (int) (end_time - start_time), buffer);
- else
- printf ("SMTP %s - %d second response time\n", state_text (result),
- (int) (end_time - start_time));
+ while (n < ncommands) {
+ asprintf (&cmd_str, "%s%s", commands[n], "\r\n");
+ send(sd, cmd_str, strlen(cmd_str), 0);
+ recv(sd, buffer, MAX_INPUT_BUFFER-1, 0);
+ if (verbose)
+ printf("%s", buffer);
+ strip (buffer);
+ if (n < nresponses) {
+#ifdef HAVE_REGEX_H
+ cflags |= REG_EXTENDED | REG_NOSUB | REG_NEWLINE;
+ //strncpy (regex_expect, responses[n], sizeof (regex_expect) - 1);
+ //regex_expect[sizeof (regex_expect) - 1] = '\0';
+ errcode = regcomp (&preg, responses[n], cflags);
+ if (errcode != 0) {
+ regerror (errcode, &preg, errbuf, MAX_INPUT_BUFFER);
+ printf (_("Could Not Compile Regular Expression"));
+ return ERROR;
+ }
+ excode = regexec (&preg, buffer, 10, pmatch, eflags);
+ if (excode == 0) {
+ result = STATE_OK;
+ }
+ else if (excode == REG_NOMATCH) {
+ result = STATE_WARNING;
+ printf (_("SMTP %s - Invalid response '%s' to command '%s'\n"), state_text (result), buffer, commands[n]);
+ }
+ else {
+ regerror (excode, &preg, errbuf, MAX_INPUT_BUFFER);
+ printf (_("Execute Error: %s\n"), errbuf);
+ result = STATE_UNKNOWN;
+ }
+#else
+ if (strstr(buffer, responses[n])!=buffer) {
+ result = STATE_WARNING;
+ printf (_("SMTP %s - Invalid response '%s' to command '%s'\n"), state_text (result), buffer, commands[n]);
+ }
+#endif
}
+ n++;
}
- /* close the connection */
-#ifdef SMTP_USE_DUMMYCMD
- send(sd,SMTP_DUMMYCMD,strlen(SMTP_DUMMYCMD),0);
- /* allow for response to DUMMYCMD to reach us */
- recv(sd,buffer,MAX_INPUT_BUFFER-1,0);
-#endif /* SMTP_USE_DUMMYCMD */
-
+ /* tell the server we're done */
send (sd, SMTP_QUIT, strlen (SMTP_QUIT), 0);
+
+ /* finally close the connection */
close (sd);
}
/* reset the alarm */
alarm (0);
- return result;
-}
+ microsec = deltime (tv);
+ elapsed_time = (double)microsec / 1.0e6;
+ if (result == STATE_OK)
+ if (check_critical_time && elapsed_time > (double) critical_time)
+ result = STATE_CRITICAL;
+ else if (check_warning_time && elapsed_time > (double) warning_time)
+ result = STATE_WARNING;
+ printf (_("SMTP %s - %.3f sec. response time%s%s|%s\n"),
+ state_text (result), elapsed_time,
+ verbose?", ":"", verbose?buffer:"",
+ fperfdata ("time", elapsed_time, "s",
+ (int)check_warning_time, warning_time,
+ (int)check_critical_time, critical_time,
+ TRUE, 0, FALSE, 0));
+ return result;
+}
{
int c;
+ int option = 0;
+ static struct option longopts[] = {
+ {"hostname", required_argument, 0, 'H'},
+ {"expect", required_argument, 0, 'e'},
+ {"critical", required_argument, 0, 'c'},
+ {"warning", required_argument, 0, 'w'},
+ {"timeout", required_argument, 0, 't'},
+ {"port", required_argument, 0, 'p'},
+ {"from", required_argument, 0, 'f'},
+ {"command", required_argument, 0, 'C'},
+ {"response", required_argument, 0, 'R'},
+ {"nocommand", required_argument, 0, 'n'},
+ {"verbose", no_argument, 0, 'v'},
+ {"version", no_argument, 0, 'V'},
+ {"use-ipv4", no_argument, 0, '4'},
+ {"use-ipv6", no_argument, 0, '6'},
+ {"help", no_argument, 0, 'h'},
+ {0, 0, 0, 0}
+ };
+
if (argc < 2)
return ERROR;
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, SMTP_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++;
+ c = getopt_long (argc, argv, "+hVv46t:p:f:e:c:w:H:C:R:",
+ longopts, &option);
- if (c == -1 || c == EOF || c == 1)
+ if (c == -1 || c == EOF)
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");
+ usage2 (_("Invalid hostname/address"), optarg);
}
break;
case 'p': /* port */
- if (is_intpos (optarg)) {
+ if (is_intpos (optarg))
server_port = atoi (optarg);
- }
- else {
- usage ("Server port must be a positive integer\n");
- }
+ else
+ usage (_("Port must be a positive integer\n"));
break;
- case 'e': /* username */
+ case 'f': /* from argument */
+ from_arg = optarg;
+ smtp_use_dummycmd = 1;
+ break;
+ case 'e': /* server expect string on 220 */
server_expect = optarg;
break;
+ case 'C': /* commands */
+ if (ncommands >= command_size) {
+ commands = realloc (commands, command_size+8);
+ if (commands == NULL)
+ die (STATE_UNKNOWN,
+ _("Could not realloc() units [%d]\n"), ncommands);
+ }
+ commands[ncommands] = optarg;
+ ncommands++;
+ break;
+ case 'R': /* server responses */
+ if (nresponses >= response_size) {
+ responses = realloc (responses, response_size+8);
+ if (responses == NULL)
+ die (STATE_UNKNOWN,
+ _("Could not realloc() units [%d]\n"), nresponses);
+ }
+ responses[nresponses] = optarg;
+ nresponses++;
+ 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");
+ usage (_("Critical time must be a positive integer\n"));
}
break;
case 'w': /* warning time threshold */
check_warning_time = TRUE;
}
else {
- usage ("Warning time must be a nonnegative integer\n");
+ usage (_("Warning time must be a positive integer\n"));
}
break;
case 'v': /* verbose */
- verbose = TRUE;
+ verbose++;
break;
case 't': /* timeout */
if (is_intnonneg (optarg)) {
socket_timeout = atoi (optarg);
}
else {
- usage ("Time interval must be a nonnegative integer\n");
+ usage (_("Time interval must be a positive integer\n"));
}
break;
+ case '4':
+ address_family = AF_INET;
+ break;
+ case '6':
+#ifdef USE_IPV6
+ address_family = AF_INET6;
+#else
+ usage (_("IPv6 support not available\n"));
+#endif
+ break;
case 'V': /* version */
- print_revision (PROGNAME, "$Revision$");
+ print_revision (progname, revision);
exit (STATE_OK);
case 'h': /* help */
print_help ();
exit (STATE_OK);
case '?': /* help */
- usage ("Invalid argument\n");
+ printf (_("%s: Unknown argument: %s\n\n"), progname, optarg);
+ print_usage ();
+ exit (STATE_UNKNOWN);
}
}
- return i;
-}
+ c = optind;
+ if (server_address == NULL) {
+ if (argv[c]) {
+ if (is_host (argv[c]))
+ server_address = argv[c];
+ else
+ usage2 (_("Invalid hostname/address"), argv[c]);
+ }
+ else {
+ asprintf (&server_address, "127.0.0.1");
+ }
+ }
+
+ if (server_expect == NULL)
+ server_expect = strdup (SMTP_EXPECT);
+
+ if (mail_command == NULL)
+ mail_command = strdup("MAIL ");
+
+ if (from_arg==NULL)
+ from_arg = strdup(" ");
+ return validate_arguments ();
+}
-
-
void
print_help (void)
{
- print_revision (PROGNAME, "$Revision$");
- printf
- ("Copyright (c) 2000 Ethan Galstad/Karl DeBisschop\n\n"
- "This plugin test the SMTP service on the specified host.\n\n");
+ char *myport;
+ asprintf (&myport, "%d", SMTP_PORT);
+
+ print_revision (progname, revision);
+
+ printf ("Copyright (c) 1999-2001 Ethan Galstad <nagios@nagios.org>\n");
+ printf (COPYRIGHT, copyright, email);
+
+ printf(_("\
+This plugin will attempt to open an SMTP connection with the 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",
- SMTP_PORT, SMTP_EXPECT, DEFAULT_SOCKET_TIMEOUT);
- support ();
-}
+ printf (_(UT_HELP_VRSN));
+
+ printf (_(UT_HOST_PORT), 'p', myport);
+ printf (_(UT_IPv46));
+
+ printf (_("\
+ -e, --expect=STRING\n\
+ String to expect in first line of server response (default: '%s')\n\
+ -n, nocommand\n\
+ Suppress SMTP command\n\
+ -C, --command=STRING\n\
+ SMTP command (may be used repeatedly)\n\
+ -R, --command=STRING\n\
+ Expected response to command (may be used repeatedly)\n\
+ -f, --from=STRING\n\
+ FROM-address to include in MAIL command, required by Exchange 2000\n"),
+ SMTP_EXPECT);
+
+ printf (_(UT_WARN_CRIT));
+
+ printf (_(UT_TIMEOUT), DEFAULT_SOCKET_TIMEOUT);
+
+ printf (_(UT_VERBOSE));
+
+ printf(_("\n\
+Successul connects return STATE_OK, refusals and timeouts return\n\
+STATE_CRITICAL, other errors return STATE_UNKNOWN. Successful\n\
+connects, but incorrect reponse messages from the host result in\n\
+STATE_WARNING return values.\n"));
+
+ printf (_(UT_SUPPORT));
+}
void
print_usage (void)
{
- printf
- ("Usage: %s -H host [-e expect] [-p port] [-w warn] [-c crit] [-t timeout] [-v]\n"
- " %s --help\n"
- " %s --version\n", PROGNAME, PROGNAME, PROGNAME);
+ printf ("\
+Usage: %s -H host [-p port] [-e expect] [-C command] [-f from addr]\n\
+ [-w warn] [-c crit] [-t timeout] [-n] [-v] [-4|-6]\n", progname);
+ printf (_(UT_HLP_VRS), progname, progname);
}