X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=plugins%2Fcheck_smtp.c;h=f7c826b2a25729f97e83299cb28eed2884f161cd;hb=3a9b2491aa376e199ec9c8b2d4c9b5daa6c942aa;hp=f96db49bbc7f66e16b03d8b06edd578a54371295;hpb=6b4b815849afa945080834ec50f78c067783f53f;p=nagiosplug.git diff --git a/plugins/check_smtp.c b/plugins/check_smtp.c index f96db49..f7c826b 100644 --- a/plugins/check_smtp.c +++ b/plugins/check_smtp.c @@ -1,175 +1,174 @@ /****************************************************************************** -* -* 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. + +******************************************************************************/ + +const char *progname = "check_smtp"; +const char *revision = "$Revision$"; +const char *copyright = "2000-2003"; +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" -#define SMTP_HELO "HELO " - -/* 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. - * - * According to rfc821 you can include a null reversepath in the from command - * - but a log message is generated on the smtp server. - */ -#define SMTP_DUMMYCMD "MAIL FROM:<>\r\n" -#define SMTP_USE_DUMMYCMD 1 -#define SMTP_QUIT "QUIT\r\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); int server_port = SMTP_PORT; char *server_address = NULL; char *server_expect = NULL; +int smtp_use_dummycmd = 1; +char *mail_command = "MAIL "; +char *from_arg = " "; 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; + double elapsed_time; + int result = STATE_UNKNOWN; char buffer[MAX_INPUT_BUFFER] = ""; - char helocmd[255] = SMTP_HELO ; - char myhostname[248]; - + char *from_str = NULL; + char *helocmd = NULL; + struct timeval tv; if (process_arguments (argc, argv) != OK) - usage ("Invalid command arguments supplied\n"); + usage (_("Invalid command arguments supplied\n")); + + /* 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"); + + /* initialize the MAIL command with optional FROM command */ + asprintf (&from_str, "%sFROM: %s%s", mail_command, from_arg, "\r\n"); - /* initalize the HELO command with the localhostname */ - gethostname(myhostname, sizeof(myhostname)); - strcat(helocmd, myhostname); - strcat(helocmd, "\r\n"); + if (verbose) + printf ("FROMCMD: %s\n", from_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); - + /* 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 { - + /* 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 { + /* send the HELO command */ + send(sd, helocmd, strlen(helocmd), 0); - time (&end_time); + /* 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) { - result = STATE_OK; + send(sd, from_str, strlen(from_str), 0); - 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; + /* allow for response to mail_command to reach us */ + recv(sd, buffer, MAX_INPUT_BUFFER-1, 0); - 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)); - } - } + if (verbose) + printf(_("DUMMYCMD: %s\n%s\n"),from_str,buffer); - /* close the connection */ - /* first 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); - -#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 */ + } /* smtp_use_dummycmd */ - /* finally close the connection */ + /* 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); + elapsed_time = delta_time (tv); + + 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; + + if (verbose) + printf (_("SMTP %s - %.3f sec. response time, %s|time=%.3f\n"), + state_text (result), elapsed_time, buffer, elapsed_time); + else + printf (_("SMTP %s - %.3f second response time|time=%.3f\n"), + state_text (result), elapsed_time, elapsed_time); + return result; } @@ -177,100 +176,50 @@ main (int argc, char **argv) - + /* 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, 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'}, + {"timeout", required_argument, 0, 't'}, + {"port", required_argument, 0, 'p'}, + {"from", required_argument, 0, 'f'}, + {"command", required_argument, 0, 'C'}, + {"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} }; -#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 + if (argc < 2) + return ERROR; - i++; + 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"); + } - if (c == -1 || c == EOF || c == 1) - break; + while (1) { + c = getopt_long (argc, argv, "+hVv46t:p:f:e:c:w:H:C:", + long_options, &option_index); - switch (c) { - case 't': - case 'p': - case 'e': - case 'c': - case 'w': - case 'H': - i++; - } + if (c == -1 || c == EOF) + break; switch (c) { case 'H': /* hostname */ @@ -278,27 +227,35 @@ call_getopt (int argc, char **argv) server_address = optarg; } else { - usage ("Invalid host name\n"); + usage (_("Invalid host name\n")); } 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 (_("Server port must be a positive integer\n")); break; - case 'e': /* username */ + case 'f': /* from argument */ + from_arg = optarg; + break; + case 'e': /* server expect string on 220 */ server_expect = optarg; break; + case 'C': /* server expect string on 220 */ + mail_command = optarg; + smtp_use_dummycmd = 1; + break; + case 'n': /* server expect string on 220 */ + smtp_use_dummycmd = 0; + 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 nonnegative integer\n")); } break; case 'w': /* warning time threshold */ @@ -307,31 +264,58 @@ call_getopt (int argc, char **argv) check_warning_time = TRUE; } else { - usage ("Warning time must be a nonnegative integer\n"); + usage (_("Warning time must be a nonnegative 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 nonnegative 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"); + usage (_("Invalid argument\n")); + } + } + + c = optind; + if (server_address == NULL) { + if (argv[c]) { + if (is_host (argv[c])) + server_address = argv[c]; + else + usage (_("Invalid host name")); + } + else { + asprintf (&server_address, "127.0.0.1"); } } - return i; + + if (server_expect == NULL) + asprintf (&server_expect, SMTP_EXPECT); + + return validate_arguments (); } @@ -348,36 +332,53 @@ validate_arguments (void) + 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 \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 (default: '%s')\n\ + -f, --from=STRING\n\ + FROM-address to include in MAIL command, required by Exchange 2000\n\ + (default: '%s')\n"), SMTP_EXPECT, mail_command, from_arg); + + 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)); } @@ -387,8 +388,11 @@ print_help (void) 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); } + + +