plugins/check_tcp.c

   1 /*****************************************************************************
   2
   3  This program is free software; you can redistribute it and/or modify
   4  it under the terms of the GNU General Public License as published by
   5  the Free Software Foundation; either version 2 of the License, or
   6  (at your option) any later version.
   7
   8  This program is distributed in the hope that it will be useful,
   9  but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  GNU General Public License for more details.
  12
  13  You should have received a copy of the GNU General Public License
  14  along with this program; if not, write to the Free Software
  15  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  16
  17  $Id$
  18
  19 *****************************************************************************/
  20
  21 /* progname "check_tcp" changes depending on symlink called */
  22 char *progname;
  23 const char *revision = "$Revision$";
  24 const char *copyright = "1999-2004";
  25 const char *email = "nagiosplug-devel@lists.sourceforge.net";
  26
  27 #include "common.h"
  28 #include "netutils.h"
  29 #include "utils.h"
  30
  31 #ifdef HAVE_SSL
  32 static int check_cert = FALSE;
  33 static int days_till_exp;
  34 static char *randbuff = "";
  35 # define my_recv(buf, len) ((flags & FLAG_SSL) ? np_net_ssl_read(buf, len) : read(sd, buf, len))
  36 # define my_send(buf, len) ((flags & FLAG_SSL) ? np_net_ssl_write(buf, len) : send(sd, buf, len, 0))
  37 #else
  38 # define my_recv(buf, len) read(sd, buf, len)
  39 # define my_send(buf, len) send(sd, buf, len, 0)
  40 #endif
  41
  42 /* int my_recv(char *, size_t); */
  43 static int process_arguments (int, char **);
  44 void print_help (void);
  45 void print_usage (void);
  46
  47 #define EXPECT server_expect[0]
  48 static char *SERVICE = "TCP";
  49 static char *SEND = NULL;
  50 static char *QUIT = NULL;
  51 static int PROTOCOL = IPPROTO_TCP; /* most common is default */
  52 static int PORT = 0;
  53
  54 static char timestamp[17] = "";
  55 static int server_port = 0;
  56 static char *server_address = NULL;
  57 static char *server_send = NULL;
  58 static char *server_quit = NULL;
  59 static char **server_expect;
  60 static size_t server_expect_count = 0;
  61 static size_t maxbytes = 0;
  62 static char **warn_codes = NULL;
  63 static size_t warn_codes_count = 0;
  64 static char **crit_codes = NULL;
  65 static size_t crit_codes_count = 0;
  66 static unsigned int delay = 0;
  67 static double warning_time = 0;
  68 static double critical_time = 0;
  69 static double elapsed_time = 0;
  70 static long microsec;
  71 static int sd = 0;
  72 #define MAXBUF 1024
  73 static char buffer[MAXBUF];
  74 static int expect_mismatch_state = STATE_WARNING;
  75
  76 #define FLAG_SSL 0x01
  77 #define FLAG_VERBOSE 0x02
  78 #define FLAG_EXACT_MATCH 0x04
  79 #define FLAG_TIME_WARN 0x08
  80 #define FLAG_TIME_CRIT 0x10
  81 #define FLAG_HIDE_OUTPUT 0x20
  82 static size_t flags = FLAG_EXACT_MATCH;
  83
  84 int
  85 main (int argc, char **argv)
  86 {
  87         int result = STATE_UNKNOWN;
  88         int i;
  89         char *status = NULL;
  90         struct timeval tv;
  91         size_t len, match = -1;
  92
  93         setlocale (LC_ALL, "");
  94         bindtextdomain (PACKAGE, LOCALEDIR);
  95         textdomain (PACKAGE);
  96
  97         /* determine program- and service-name quickly */
  98         progname = strrchr(argv[0], '/');
  99         if(progname != NULL) progname++;
 100         else progname = argv[0];
 101
 102         len = strlen(progname);
 103         if(len > 6 && !memcmp(progname, "check_", 6)) {
 104                 SERVICE = progname + 6;
 105                 for(i = 0; i < len - 6; i++)
 106                         SERVICE[i] = toupper(SERVICE[i]);
 107         }
 108
 109         /* set up a resonable buffer at first (will be realloc()'ed if
 110          * user specifies other options) */
 111         server_expect = calloc(sizeof(char *), 2);
 112
 113         /* determine defaults for this service's protocol */
 114         if (!strncmp(SERVICE, "UDP", 3)) {
 115                 PROTOCOL = IPPROTO_UDP;
 116         }
 117         else if (!strncmp(SERVICE, "FTP", 3)) {
 118                 EXPECT = "220";
 119                 QUIT = "QUIT\r\n";
 120                 PORT = 21;
 121         }
 122         else if (!strncmp(SERVICE, "POP", 3) || !strncmp(SERVICE, "POP3", 4)) {
 123                 EXPECT = "+OK";
 124                 QUIT = "QUIT\r\n";
 125                 PORT = 110;
 126         }
 127         else if (!strncmp(SERVICE, "SMTP", 4)) {
 128                 EXPECT = "220";
 129                 QUIT = "QUIT\r\n";
 130                 PORT = 25;
 131         }
 132         else if (!strncmp(SERVICE, "IMAP", 4)) {
 133                 EXPECT = "* OK";
 134                 QUIT = "a1 LOGOUT\r\n";
 135                 PORT = 143;
 136         }
 137 #ifdef HAVE_SSL
 138         else if (!strncmp(SERVICE, "SIMAP", 5)) {
 139                 EXPECT = "* OK";
 140                 QUIT = "a1 LOGOUT\r\n";
 141                 flags |= FLAG_SSL;
 142                 PORT = 993;
 143         }
 144         else if (!strncmp(SERVICE, "SPOP", 4)) {
 145                 EXPECT = "+OK";
 146                 QUIT = "QUIT\r\n";
 147                 flags |= FLAG_SSL;
 148                 PORT = 995;
 149         }
 150         else if (!strncmp(SERVICE, "SSMTP", 5)) {
 151                 EXPECT = "220";
 152                 QUIT = "QUIT\r\n";
 153                 flags |= FLAG_SSL;
 154                 PORT = 465;
 155         }
 156         else if (!strncmp(SERVICE, "JABBER", 6)) {
 157                 SEND = "<stream:stream to=\'host\' xmlns=\'jabber:client\' xmlns:stream=\'http://etherx.jabber.org/streams\'>\n";
 158                 EXPECT = "<?xml version=\'1.0\'?><stream:stream xmlns:stream=\'http://etherx.jabber.org/streams\'";
 159                 QUIT = "</stream:stream>\n";
 160                 flags |= FLAG_SSL | FLAG_HIDE_OUTPUT;
 161                 PORT = 5222;
 162         }
 163         else if (!strncmp (SERVICE, "NNTPS", 5)) {
 164                 server_expect_count = 2;
 165                 server_expect[0] = "200";
 166                 server_expect[1] = "201";
 167                 QUIT = "QUIT\r\n";
 168                 flags |= FLAG_SSL;
 169                 PORT = 563;
 170         }
 171 #endif
 172         else if (!strncmp (SERVICE, "NNTP", 4)) {
 173                 server_expect_count = 2;
 174                 server_expect = malloc(sizeof(char *) * server_expect_count);
 175                 server_expect[0] = strdup("200");
 176                 server_expect[1] = strdup("201");
 177                 QUIT = "QUIT\r\n";
 178                 PORT = 119;
 179         }
 180         else if (!strncmp(SERVICE, "CLAMD", 5)) {
 181                 SEND = "PING";
 182                 EXPECT = "PONG";
 183                 QUIT = NULL;
 184                 PORT = 3310;
 185         }
 186         /* fallthrough check, so it's supposed to use reverse matching */
 187         else if (strcmp (SERVICE, "TCP"))
 188                 usage (_("CRITICAL - Generic check_tcp called with unknown service\n"));
 189
 190         server_address = "127.0.0.1";
 191         server_port = PORT;
 192         server_send = SEND;
 193         server_quit = QUIT;
 194         status = NULL;
 195
 196         if (process_arguments (argc, argv) == ERROR)
 197                 usage4 (_("Could not parse arguments"));
 198
 199         if(flags & FLAG_VERBOSE) {
 200                 printf("Using service %s\n", SERVICE);
 201                 printf("Port: %d\n", PORT);
 202                 printf("flags: 0x%x\n", flags);
 203         }
 204
 205         if(EXPECT && !server_expect_count)
 206                 server_expect_count++;
 207
 208         /* set up the timer */
 209         signal (SIGALRM, socket_timeout_alarm_handler);
 210         alarm (socket_timeout);
 211
 212         /* try to connect to the host at the given port number */
 213         gettimeofday (&tv, NULL);
 214
 215         result = np_net_connect (server_address, server_port, &sd, PROTOCOL);
 216         if (result == STATE_CRITICAL) return STATE_CRITICAL;
 217
 218 #ifdef HAVE_SSL
 219         if (flags & FLAG_SSL){
 220                 result = np_net_ssl_init(sd);
 221                 if (result == STATE_OK && check_cert == TRUE) {
 222                         result = np_net_ssl_check_cert(days_till_exp);
 223                         if(result != STATE_OK) {
 224                                 printf(_("CRITICAL - Cannot retrieve server certificate.\n"));
 225                         }
 226                 }
 227         }
 228         if(result != STATE_OK){
 229                 np_net_ssl_cleanup();
 230                 if(sd) close(sd);
 231                 return result;
 232         }
 233 #endif /* HAVE_SSL */
 234
 235         if (server_send != NULL) {              /* Something to send? */
 236                 my_send(server_send, strlen(server_send));
 237         }
 238
 239         if (delay > 0) {
 240                 tv.tv_sec += delay;
 241                 sleep (delay);
 242         }
 243
 244         if(flags & FLAG_VERBOSE) {
 245                 printf("server_expect_count: %d\n", server_expect_count);
 246                 for(i = 0; i < server_expect_count; i++)
 247                         printf("\t%d: %s\n", i, server_expect[i]);
 248         }
 249
 250         /* if(len) later on, we know we have a non-NULL response */
 251         len = 0;
 252         if (server_expect_count) {
 253
 254                 /* watch for the expect string */
 255                 while ((i = my_recv(buffer, sizeof(buffer))) > 0) {
 256                         status = realloc(status, len + i + 1);
 257                         memcpy(&status[len], buffer, i);
 258                         len += i;
 259
 260                         /* stop reading if user-forced or data-starved */
 261                         if(i < sizeof(buffer) || (maxbytes && len >= maxbytes))
 262                                 break;
 263
 264                         if (maxbytes && len >= maxbytes)
 265                                 break;
 266                 }
 267
 268                 /* no data when expected, so return critical */
 269                 if (len == 0)
 270                         die (STATE_CRITICAL, _("No data received from host\n"));
 271
 272                 /* force null-termination and strip whitespace from end of output */
 273                 status[len--] = '\0';
 274                 /* print raw output if we're debugging */
 275                 if(flags & FLAG_VERBOSE)
 276                         printf("received %d bytes from host\n#-raw-recv-------#\n%s\n#-raw-recv-------#\n",
 277                                len + 1, status);
 278                 while(isspace(status[len])) status[len--] = '\0';
 279
 280                 for (i = 0; i < server_expect_count; i++) {
 281                         match = -2;             /* tag it so we know if we tried and failed */
 282                         if (flags & FLAG_VERBOSE)
 283                                 printf ("looking for [%s] %s [%s]\n", server_expect[i],
 284                                         (flags & FLAG_EXACT_MATCH) ? "in beginning of" : "anywhere in",
 285                                         status);
 286
 287                         /* match it. math first in short-circuit */
 288                         if ((flags & FLAG_EXACT_MATCH && !strncmp(status, server_expect[i], strlen(server_expect[i]))) ||
 289                             (!(flags & FLAG_EXACT_MATCH) && strstr(status, server_expect[i])))
 290                         {
 291                                 if(flags & FLAG_VERBOSE) puts("found it");
 292                                 match = i;
 293                                 break;
 294                         }
 295                 }
 296         }
 297
 298         if (server_quit != NULL) {
 299                 my_send(server_quit, strlen(server_quit));
 300         }
 301 #ifdef HAVE_SSL
 302         np_net_ssl_cleanup();
 303 #endif
 304         if (sd) close (sd);
 305
 306         microsec = deltime (tv);
 307         elapsed_time = (double)microsec / 1.0e6;
 308
 309         if (flags & FLAG_TIME_CRIT && elapsed_time > critical_time)
 310                 result = STATE_CRITICAL;
 311         else if (flags & FLAG_TIME_WARN && elapsed_time > warning_time)
 312                 result = STATE_WARNING;
 313
 314         /* did we get the response we hoped? */
 315         if(match == -2 && result != STATE_CRITICAL)
 316                 result = STATE_WARNING;
 317
 318         /* reset the alarm */
 319         alarm (0);
 320
 321         /* this is a bit stupid, because we don't want to print the
 322          * response time (which can look ok to the user) if we didn't get
 323          * the response we were looking for. if-else */
 324         printf(_("%s %s - "), SERVICE, state_text(result));
 325
 326         if(match == -2 && len && !(flags & FLAG_HIDE_OUTPUT))
 327                 printf("Unexpected response from host/socket: %s", status);
 328         else {
 329                 printf("%.3f second response time on ", elapsed_time);
 330                 if(server_address[0] != '/')
 331                         printf("port %d", server_port);
 332                 else
 333                         printf("socket %s", server_address);
 334         }
 335
 336         if (match != -2 && !(flags & FLAG_HIDE_OUTPUT) && len)
 337                 printf (" [%s]", status);
 338
 339         /* perf-data doesn't apply when server doesn't talk properly,
 340          * so print all zeroes on warn and crit */
 341         if(match == -2)
 342                 printf ("|time=%fs;0.0;0.0;0.0;0.0", elapsed_time);
 343         else
 344                 printf("|%s",
 345                                 fperfdata ("time", elapsed_time, "s",
 346                                    TRUE, warning_time,
 347                                    TRUE, critical_time,
 348                                    TRUE, 0,
 349                                    TRUE, socket_timeout)
 350                       );
 351
 352         putchar('\n');
 353         return result;
 354 }
 355
 356
 357
 358 /* process command-line arguments */
 359 static int
 360 process_arguments (int argc, char **argv)
 361 {
 362         int c;
 363
 364         int option = 0;
 365         static struct option longopts[] = {
 366                 {"hostname", required_argument, 0, 'H'},
 367                 {"critical-time", required_argument, 0, 'c'},
 368                 {"warning-time", required_argument, 0, 'w'},
 369                 {"critical-codes", required_argument, 0, 'C'},
 370                 {"warning-codes", required_argument, 0, 'W'},
 371                 {"timeout", required_argument, 0, 't'},
 372                 {"protocol", required_argument, 0, 'P'},
 373                 {"port", required_argument, 0, 'p'},
 374                 {"send", required_argument, 0, 's'},
 375                 {"expect", required_argument, 0, 'e'},
 376                 {"maxbytes", required_argument, 0, 'm'},
 377                 {"quit", required_argument, 0, 'q'},
 378                 {"jail", required_argument, 0, 'j'},
 379                 {"delay", required_argument, 0, 'd'},
 380                 {"refuse", required_argument, 0, 'r'},
 381                 {"mismatch", required_argument, 0, 'M'},
 382                 {"use-ipv4", no_argument, 0, '4'},
 383                 {"use-ipv6", no_argument, 0, '6'},
 384                 {"verbose", no_argument, 0, 'v'},
 385                 {"version", no_argument, 0, 'V'},
 386                 {"help", no_argument, 0, 'h'},
 387 #ifdef HAVE_SSL
 388                 {"ssl", no_argument, 0, 'S'},
 389                 {"certificate", required_argument, 0, 'D'},
 390 #endif
 391                 {0, 0, 0, 0}
 392         };
 393
 394         if (argc < 2)
 395                 usage4 (_("No arguments found"));
 396
 397         /* backwards compatibility */
 398         for (c = 1; c < argc; c++) {
 399                 if (strcmp ("-to", argv[c]) == 0)
 400                         strcpy (argv[c], "-t");
 401                 else if (strcmp ("-wt", argv[c]) == 0)
 402                         strcpy (argv[c], "-w");
 403                 else if (strcmp ("-ct", argv[c]) == 0)
 404                         strcpy (argv[c], "-c");
 405         }
 406
 407         if (!is_option (argv[1])) {
 408                 server_address = argv[1];
 409                 argv[1] = argv[0];
 410                 argv = &argv[1];
 411                 argc--;
 412         }
 413
 414         while (1) {
 415                 c = getopt_long (argc, argv, "+hVv46H:s:e:q:m:c:w:t:p:C:W:d:Sr:jD:M:",
 416                                  longopts, &option);
 417
 418                 if (c == -1 || c == EOF || c == 1)
 419                         break;
 420
 421                 switch (c) {
 422                 case '?':                 /* print short usage statement if args not parsable */
 423                         usage2 (_("Unknown argument"), optarg);
 424                 case 'h':                 /* help */
 425                         print_help ();
 426                         exit (STATE_OK);
 427                 case 'V':                 /* version */
 428                         print_revision (progname, revision);
 429                         exit (STATE_OK);
 430                 case 'v':                 /* verbose mode */
 431                         flags |= FLAG_VERBOSE;
 432                         break;
 433                 case '4':
 434                         address_family = AF_INET;
 435                         break;
 436                 case '6':
 437 #ifdef USE_IPV6
 438                         address_family = AF_INET6;
 439 #else
 440                         usage4 (_("IPv6 support not available"));
 441 #endif
 442                         break;
 443                 case 'H':                 /* hostname */
 444                         server_address = optarg;
 445                         break;
 446                 case 'c':                 /* critical */
 447                         if (!is_intnonneg (optarg))
 448                                 usage4 (_("Critical threshold must be a positive integer"));
 449                         else
 450                                 critical_time = strtod (optarg, NULL);
 451                         flags |= FLAG_TIME_CRIT;
 452                         break;
 453                 case 'j':                 /* hide output */
 454                         flags |= FLAG_HIDE_OUTPUT;
 455                         break;
 456                 case 'w':                 /* warning */
 457                         if (!is_intnonneg (optarg))
 458                                 usage4 (_("Warning threshold must be a positive integer"));
 459                         else
 460                                 warning_time = strtod (optarg, NULL);
 461                         flags |= FLAG_TIME_WARN;
 462                         break;
 463                 case 'C':
 464                         crit_codes = realloc (crit_codes, ++crit_codes_count);
 465                         crit_codes[crit_codes_count - 1] = optarg;
 466                         break;
 467                 case 'W':
 468                         warn_codes = realloc (warn_codes, ++warn_codes_count);
 469                         warn_codes[warn_codes_count - 1] = optarg;
 470                         break;
 471                 case 't':                 /* timeout */
 472                         if (!is_intpos (optarg))
 473                                 usage4 (_("Timeout interval must be a positive integer"));
 474                         else
 475                                 socket_timeout = atoi (optarg);
 476                         break;
 477                 case 'p':                 /* port */
 478                         if (!is_intpos (optarg))
 479                                 usage4 (_("Port must be a positive integer"));
 480                         else
 481                                 server_port = atoi (optarg);
 482                         break;
 483                 case 's':
 484                         server_send = optarg;
 485                         break;
 486                 case 'e': /* expect string (may be repeated) */
 487                         EXPECT = NULL;
 488                         flags &= ~FLAG_EXACT_MATCH;
 489                         if (server_expect_count == 0)
 490                                 server_expect = malloc (sizeof (char *) * (++server_expect_count));
 491                         else
 492                                 server_expect = realloc (server_expect, sizeof (char *) * (++server_expect_count));
 493                         server_expect[server_expect_count - 1] = optarg;
 494                         break;
 495                 case 'm':
 496                         if (!is_intpos (optarg))
 497                                 usage4 (_("Maxbytes must be a positive integer"));
 498                         else
 499                                 maxbytes = strtol (optarg, NULL, 0);
 500                 case 'q':
 501                         asprintf(&server_quit, "%s\r\n", optarg);
 502                         break;
 503                 case 'r':
 504                         if (!strncmp(optarg,"ok",2))
 505                                 econn_refuse_state = STATE_OK;
 506                         else if (!strncmp(optarg,"warn",4))
 507                                 econn_refuse_state = STATE_WARNING;
 508                         else if (!strncmp(optarg,"crit",4))
 509                                 econn_refuse_state = STATE_CRITICAL;
 510                         else
 511                                 usage4 (_("Refuse must be one of ok, warn, crit"));
 512                         break;
 513                 case 'M':
 514                         if (!strncmp(optarg,"ok",2))
 515                                 expect_mismatch_state = STATE_OK;
 516                         else if (!strncmp(optarg,"warn",4))
 517                                 expect_mismatch_state = STATE_WARNING;
 518                         else if (!strncmp(optarg,"crit",4))
 519                                 expect_mismatch_state = STATE_CRITICAL;
 520                         else
 521                                 usage4 (_("Mismatch must be one of ok, warn, crit"));
 522                         break;
 523                 case 'd':
 524                         if (is_intpos (optarg))
 525                                 delay = atoi (optarg);
 526                         else
 527                                 usage4 (_("Delay must be a positive integer"));
 528                         break;
 529                 case 'D': /* Check SSL cert validity - days 'til certificate expiration */
 530 #ifdef HAVE_SSL
 531 #  ifdef USE_OPENSSL /* XXX */
 532                         if (!is_intnonneg (optarg))
 533                                 usage2 (_("Invalid certificate expiration period"), optarg);
 534                         days_till_exp = atoi (optarg);
 535                         check_cert = TRUE;
 536                         flags |= FLAG_SSL;
 537                         break;
 538 #  endif /* USE_OPENSSL */
 539 #endif
 540                         /* fallthrough if we don't have ssl */
 541                 case 'S':
 542 #ifdef HAVE_SSL
 543                         flags |= FLAG_SSL;
 544 #else
 545                         die (STATE_UNKNOWN, _("Invalid option - SSL is not available"));
 546 #endif
 547                         break;
 548                 }
 549         }
 550
 551         if (server_address == NULL)
 552                 usage4 (_("You must provide a server address"));
 553         else if (server_address[0] != '/' && is_host (server_address) == FALSE)
 554                 usage2 (_("Invalid hostname, address, or socket"), server_address);
 555
 556         return TRUE;
 557 }
 558
 559
 560 void
 561 print_help (void)
 562 {
 563         print_revision (progname, revision);
 564
 565         printf ("Copyright (c) 1999 Ethan Galstad <nagios@nagios.org>\n");
 566         printf (COPYRIGHT, copyright, email);
 567
 568         printf (_("This plugin tests %s connections with the specified host (or unix socket).\n\n"),
 569                 SERVICE);
 570
 571         print_usage ();
 572
 573         printf (_(UT_HELP_VRSN));
 574
 575         printf (_(UT_HOST_PORT), 'p', "none");
 576
 577         printf (_(UT_IPv46));
 578
 579         printf (_("\
 580  -s, --send=STRING\n\
 581     String to send to the server\n\
 582  -e, --expect=STRING\n\
 583     String to expect in server response\n\
 584  -q, --quit=STRING\n\
 585     String to send server to initiate a clean close of the connection\n"));
 586
 587         printf (_("\
 588  -r, --refuse=ok|warn|crit\n\
 589     Accept tcp refusals with states ok, warn, crit (default: crit)\n\
 590  -M, --mismatch=ok|warn|crit\n\
 591     Accept expected string mismatches with states ok, warn, crit (default: warn)\n\
 592  -j, --jail\n\
 593     Hide output from TCP socket\n\
 594  -m, --maxbytes=INTEGER\n\
 595     Close connection once more than this number of bytes are received\n\
 596  -d, --delay=INTEGER\n\
 597     Seconds to wait between sending string and polling for response\n"));
 598
 599 #ifdef HAVE_SSL
 600         printf (_("\
 601  -D, --certificate=INTEGER\n\
 602     Minimum number of days a certificate has to be valid.\n\
 603  -S, --ssl\n\
 604     Use SSL for the connection.\n"));
 605 #endif
 606
 607         printf (_(UT_WARN_CRIT));
 608
 609         printf (_(UT_TIMEOUT), DEFAULT_SOCKET_TIMEOUT);
 610
 611         printf (_(UT_VERBOSE));
 612
 613         printf (_(UT_SUPPORT));
 614 }
 615
 616
 617 void
 618 print_usage (void)
 619 {
 620         printf ("\
 621 Usage: %s -H host -p port [-w <warning time>] [-c <critical time>]\n\
 622                   [-s <send string>] [-e <expect string>] [-q <quit string>]\n\
 623                   [-m <maximum bytes>] [-d <delay>] [-t <timeout seconds>]\n\
 624                   [-r <refuse state>] [-M <mismatch state>] [-v] [-4|-6] [-j]\n\
 625                   [-D <days to cert expiry>] [-S <use SSL>]\n", progname);
 626 }
 627