plugins/check_snmp.c

   1 /******************************************************************************
   2 *
   3 * Nagios check_snmp plugin
   4 *
   5 * License: GPL
   6 * Copyright (c) 1999-2006 nagios-plugins team
   7 *
   8 * Last Modified: $Date$
   9 *
  10 * Description:
  11 *
  12 * This file contains the check_snmp plugin
  13 *
  14 * License Information:
  15 *
  16 * This program is free software; you can redistribute it and/or modify
  17 * it under the terms of the GNU General Public License as published by
  18 * the Free Software Foundation; either version 2 of the License, or
  19 * (at your option) any later version.
  20 *
  21 * This program is distributed in the hope that it will be useful,
  22 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24 * GNU General Public License for more details.
  25 *
  26 * You should have received a copy of the GNU General Public License
  27 * along with this program; if not, write to the Free Software
  28 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  29 *
  30 * $Id$
  31 *
  32 ******************************************************************************/
  33
  34 const char *progname = "check_snmp";
  35 const char *revision = "$Revision$";
  36 const char *copyright = "1999-2006";
  37 const char *email = "nagiosplug-devel@lists.sourceforge.net";
  38
  39 #include "common.h"
  40 #include "utils.h"
  41 #include "popen.h"
  42
  43 #define DEFAULT_COMMUNITY "public"
  44 #define DEFAULT_PORT "161"
  45 #define DEFAULT_MIBLIST "ALL"
  46 #define DEFAULT_PROTOCOL "1"
  47 #define DEFAULT_TIMEOUT 1
  48 #define DEFAULT_RETRIES 5
  49 #define DEFAULT_AUTH_PROTOCOL "MD5"
  50 #define DEFAULT_DELIMITER "="
  51 #define DEFAULT_OUTPUT_DELIMITER " "
  52
  53 #define mark(a) ((a)!=0?"*":"")
  54
  55 #define CHECK_UNDEF 0
  56 #define CRIT_PRESENT 1
  57 #define CRIT_STRING 2
  58 #define CRIT_REGEX 4
  59 #define CRIT_GT 8
  60 #define CRIT_LT 16
  61 #define CRIT_GE 32
  62 #define CRIT_LE 64
  63 #define CRIT_EQ 128
  64 #define CRIT_NE 256
  65 #define CRIT_RANGE 512
  66 #define WARN_PRESENT 1024
  67 #define WARN_STRING 2048
  68 #define WARN_REGEX 4096
  69 #define WARN_GT 8192
  70 #define WARN_LT 16384
  71 #define WARN_GE 32768
  72 #define WARN_LE 65536
  73 #define WARN_EQ 131072
  74 #define WARN_NE 262144
  75 #define WARN_RANGE 524288
  76
  77 #define MAX_OIDS 8
  78 #define MAX_DELIM_LENGTH 8
  79
  80 int process_arguments (int, char **);
  81 int validate_arguments (void);
  82 char *clarify_message (char *);
  83 int check_num (int);
  84 int lu_getll (unsigned long *, char *);
  85 int lu_getul (unsigned long *, char *);
  86 char *thisarg (char *str);
  87 char *nextarg (char *str);
  88 void print_usage (void);
  89 void print_help (void);
  90
  91 #include "regex.h"
  92 char regex_expect[MAX_INPUT_BUFFER] = "";
  93 regex_t preg;
  94 regmatch_t pmatch[10];
  95 char timestamp[10] = "";
  96 char errbuf[MAX_INPUT_BUFFER];
  97 char perfstr[MAX_INPUT_BUFFER];
  98 int cflags = REG_EXTENDED | REG_NOSUB | REG_NEWLINE;
  99 int eflags = 0;
 100 int errcode, excode;
 101
 102 char *server_address = NULL;
 103 char *community = NULL;
 104 char *authpriv = NULL;
 105 char *proto = NULL;
 106 char *seclevel = NULL;
 107 char *secname = NULL;
 108 char *authproto = NULL;
 109 char *authpasswd = NULL;
 110 char *privpasswd = NULL;
 111 char *oid;
 112 char *label;
 113 char *units;
 114 char *port;
 115 char string_value[MAX_INPUT_BUFFER] = "";
 116 char **labels = NULL;
 117 char **unitv = NULL;
 118 size_t nlabels = 0;
 119 size_t labels_size = 8;
 120 size_t nunits = 0;
 121 size_t unitv_size = 8;
 122 int verbose = FALSE;
 123 int usesnmpgetnext = FALSE;
 124 unsigned long lower_warn_lim[MAX_OIDS];
 125 unsigned long upper_warn_lim[MAX_OIDS];
 126 unsigned long lower_crit_lim[MAX_OIDS];
 127 unsigned long upper_crit_lim[MAX_OIDS];
 128 unsigned long response_value[MAX_OIDS];
 129 int check_warning_value = FALSE;
 130 int check_critical_value = FALSE;
 131 int retries = 0;
 132 unsigned long eval_method[MAX_OIDS];
 133 char *delimiter;
 134 char *output_delim;
 135 char *miblist = NULL;
 136 int needmibs = FALSE;
 137
 138
 139 int
 140 main (int argc, char **argv)
 141 {
 142         int i = 0;
 143         int iresult = STATE_UNKNOWN;
 144         int found = 0;
 145         int result = STATE_DEPENDENT;
 146         char input_buffer[MAX_INPUT_BUFFER];
 147         char *command_line = NULL;
 148         char *response = NULL;
 149         char *outbuff;
 150         char *output;
 151         char *ptr = NULL;
 152         char *p2 = NULL;
 153         char *show = NULL;
 154         char type[8];
 155         char *str[MAX_INPUT_BUFFER];
 156
 157         setlocale (LC_ALL, "");
 158         bindtextdomain (PACKAGE, LOCALEDIR);
 159         textdomain (PACKAGE);
 160
 161         labels = malloc (labels_size);
 162         unitv = malloc (unitv_size);
 163         for (i = 0; i < MAX_OIDS; i++)
 164                 eval_method[i] = CHECK_UNDEF;
 165         i = 0;
 166
 167         oid = strdup ("");
 168         label = strdup ("SNMP");
 169         units = strdup ("");
 170         port = strdup (DEFAULT_PORT);
 171         outbuff = strdup ("");
 172         output = strdup ("");
 173         delimiter = strdup (" = ");
 174         output_delim = strdup (DEFAULT_OUTPUT_DELIMITER);
 175         /* miblist = strdup (DEFAULT_MIBLIST); */
 176         timeout_interval = DEFAULT_TIMEOUT;
 177         retries = DEFAULT_RETRIES;
 178
 179         if (process_arguments (argc, argv) == ERROR)
 180                 usage4 (_("Could not parse arguments"));
 181
 182         /* create the command line to execute */
 183                 if(usesnmpgetnext == TRUE) {
 184                 asprintf(&command_line, "%s -t %d -r %d -m %s -v %s %s %s:%s %s",
 185                                     PATH_TO_SNMPGETNEXT, timeout_interval, retries, miblist, proto,
 186                                                 authpriv, server_address, port, oid);
 187         }else{
 188
 189                 asprintf (&command_line, "%s -t %d -r %d -m %s -v %s %s %s:%s %s",
 190                   PATH_TO_SNMPGET, timeout_interval, retries, miblist, proto,
 191                   authpriv, server_address, port, oid);
 192         }
 193
 194         if (verbose)
 195                 printf ("%s\n", command_line);
 196
 197
 198         /* run the command */
 199         child_process = spopen (command_line);
 200         if (child_process == NULL) {
 201                 printf (_("Could not open pipe: %s\n"), command_line);
 202                 exit (STATE_UNKNOWN);
 203         }
 204
 205         child_stderr = fdopen (child_stderr_array[fileno (child_process)], "r");
 206         if (child_stderr == NULL) {
 207                 printf (_("Could not open stderr for %s\n"), command_line);
 208         }
 209
 210         while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_process))
 211                 asprintf (&output, "%s%s", output, input_buffer);
 212
 213         if (verbose)
 214                 printf ("%s\n", output);
 215
 216         ptr = output;
 217
 218         strcat(perfstr, "| ");
 219         while (ptr) {
 220                 char *foo;
 221
 222                 foo = strstr (ptr, delimiter);
 223                 strncat(perfstr, ptr, foo-ptr);
 224                 ptr = foo;
 225
 226                 if (ptr == NULL)
 227                         break;
 228
 229                 ptr += strlen (delimiter);
 230                 ptr += strspn (ptr, " ");
 231
 232                 found++;
 233
 234                 if (ptr[0] == '"') {
 235                         ptr++;
 236                         response = strpcpy (response, ptr, "\"");
 237                         ptr = strpbrk (ptr, "\"");
 238                         ptr += strspn (ptr, "\"\n");
 239                 }
 240                 else {
 241                         response = strpcpy (response, ptr, "\n");
 242                         ptr = strpbrk (ptr, "\n");
 243                         ptr += strspn (ptr, "\n");
 244                         while
 245                                 (strstr (ptr, delimiter) &&
 246                                  strstr (ptr, "\n") && strstr (ptr, "\n") < strstr (ptr, delimiter)) {
 247                                 response = strpcat (response, ptr, "\n");
 248                                 ptr = strpbrk (ptr, "\n");
 249                         }
 250                         if (ptr && strstr (ptr, delimiter) == NULL) {
 251                                 asprintf (&response, "%s%s", response, ptr);
 252                                 ptr = NULL;
 253                         }
 254                 }
 255
 256                 /* We strip out the datatype indicator for PHBs */
 257                 if (strstr (response, "Gauge: "))
 258                         show = strstr (response, "Gauge: ") + 7;
 259                 else if (strstr (response, "Gauge32: "))
 260                         show = strstr (response, "Gauge32: ") + 9;
 261                 else if (strstr (response, "Counter32: ")) {
 262                         show = strstr (response, "Counter32: ") + 11;
 263                         strcpy(type, "c");
 264                 }
 265                 else if (strstr (response, "INTEGER: "))
 266                         show = strstr (response, "INTEGER: ") + 9;
 267                 else if (strstr (response, "STRING: "))
 268                         show = strstr (response, "STRING: ") + 8;
 269                 else
 270                         show = response;
 271                 p2 = show;
 272
 273                 iresult = STATE_DEPENDENT;
 274
 275                 /* Process this block for integer comparisons */
 276                 if (eval_method[i] & CRIT_GT ||
 277                     eval_method[i] & CRIT_LT ||
 278                     eval_method[i] & CRIT_GE ||
 279                     eval_method[i] & CRIT_LE ||
 280                     eval_method[i] & CRIT_EQ ||
 281                     eval_method[i] & CRIT_NE ||
 282                     eval_method[i] & WARN_GT ||
 283                     eval_method[i] & WARN_LT ||
 284                     eval_method[i] & WARN_GE ||
 285                     eval_method[i] & WARN_LE ||
 286                     eval_method[i] & WARN_EQ ||
 287                     eval_method[i] & WARN_NE) {
 288                         p2 = strpbrk (p2, "0123456789");
 289                         if (p2 == NULL)
 290                                 die (STATE_UNKNOWN,_("No valid data returned"));
 291                         response_value[i] = strtoul (p2, NULL, 10);
 292                         iresult = check_num (i);
 293                         asprintf (&show, "%lu", response_value[i]);
 294                 }
 295
 296                 /* Process this block for string matching */
 297                 else if (eval_method[i] & CRIT_STRING) {
 298                         if (strcmp (show, string_value))
 299                                 iresult = STATE_CRITICAL;
 300                         else
 301                                 iresult = STATE_OK;
 302                 }
 303
 304                 /* Process this block for regex matching */
 305                 else if (eval_method[i] & CRIT_REGEX) {
 306                         excode = regexec (&preg, response, 10, pmatch, eflags);
 307                         if (excode == 0) {
 308                                 iresult = STATE_OK;
 309                         }
 310                         else if (excode != REG_NOMATCH) {
 311                                 regerror (excode, &preg, errbuf, MAX_INPUT_BUFFER);
 312                                 printf (_("Execute Error: %s\n"), errbuf);
 313                                 exit (STATE_CRITICAL);
 314                         }
 315                         else {
 316                                 iresult = STATE_CRITICAL;
 317                         }
 318                 }
 319
 320                 /* Process this block for existence-nonexistence checks */
 321                 else {
 322                         if (eval_method[i] & CRIT_PRESENT)
 323                                 iresult = STATE_CRITICAL;
 324                         else if (eval_method[i] & WARN_PRESENT)
 325                                 iresult = STATE_WARNING;
 326                         else if (response && iresult == STATE_DEPENDENT)
 327                                 iresult = STATE_OK;
 328                 }
 329
 330                 /* Result is the worst outcome of all the OIDs tested */
 331                 result = max_state (result, iresult);
 332
 333                 /* Prepend a label for this OID if there is one */
 334                 if (nlabels > (size_t)1 && (size_t)i < nlabels && labels[i] != NULL)
 335                         asprintf (&outbuff, "%s%s%s %s%s%s", outbuff,
 336                                   (i == 0) ? " " : output_delim,
 337                                   labels[i], mark (iresult), show, mark (iresult));
 338                 else
 339                         asprintf (&outbuff, "%s%s%s%s%s", outbuff, (i == 0) ? " " : output_delim,
 340                                   mark (iresult), show, mark (iresult));
 341
 342                 /* Append a unit string for this OID if there is one */
 343                 if (nunits > (size_t)0 && (size_t)i < nunits && unitv[i] != NULL)
 344                         asprintf (&outbuff, "%s %s", outbuff, unitv[i]);
 345
 346                 i++;
 347
 348                 asprintf(str, "=%s%s;;;; ", show, type ? type : "");
 349                 strcat(perfstr, *str);
 350
 351         }       /* end while (ptr) */
 352
 353         if (found == 0)
 354                 die (STATE_UNKNOWN,
 355                      _("%s problem - No data received from host\nCMD: %s\n"),
 356                      label,
 357                      command_line);
 358
 359         /* WARNING if output found on stderr */
 360         if (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_stderr))
 361                 result = max_state (result, STATE_WARNING);
 362
 363         /* close stderr */
 364         (void) fclose (child_stderr);
 365
 366         /* close the pipe */
 367         if (spclose (child_process))
 368                 result = max_state (result, STATE_WARNING);
 369
 370 /*      if (nunits == 1 || i == 1) */
 371 /*              printf ("%s %s -%s %s\n", label, state_text (result), outbuff, units); */
 372 /*      else */
 373         printf ("%s %s -%s %s \n", label, state_text (result), outbuff, perfstr);
 374
 375         return result;
 376 }
 377
 378
 379
 380 /* process command-line arguments */
 381 int
 382 process_arguments (int argc, char **argv)
 383 {
 384         char *ptr;
 385         int c = 1;
 386         int j = 0, jj = 0, ii = 0;
 387
 388         int option = 0;
 389         static struct option longopts[] = {
 390                 STD_LONG_OPTS,
 391                 {"community", required_argument, 0, 'C'},
 392                 {"oid", required_argument, 0, 'o'},
 393                 {"object", required_argument, 0, 'o'},
 394                 {"delimiter", required_argument, 0, 'd'},
 395                 {"output-delimiter", required_argument, 0, 'D'},
 396                 {"string", required_argument, 0, 's'},
 397                 {"timeout", required_argument, 0, 't'},
 398                 {"regex", required_argument, 0, 'r'},
 399                 {"ereg", required_argument, 0, 'r'},
 400                 {"eregi", required_argument, 0, 'R'},
 401                 {"label", required_argument, 0, 'l'},
 402                 {"units", required_argument, 0, 'u'},
 403                 {"port", required_argument, 0, 'p'},
 404                 {"retries", required_argument, 0, 'e'},
 405                 {"miblist", required_argument, 0, 'm'},
 406                 {"protocol", required_argument, 0, 'P'},
 407                 {"seclevel", required_argument, 0, 'L'},
 408                 {"secname", required_argument, 0, 'U'},
 409                 {"authproto", required_argument, 0, 'a'},
 410                 {"authpasswd", required_argument, 0, 'A'},
 411                 {"privpasswd", required_argument, 0, 'X'},
 412                 {"next", no_argument, 0, 'n'},
 413                 {0, 0, 0, 0}
 414         };
 415
 416         if (argc < 2)
 417                 return ERROR;
 418
 419         /* reverse compatibility for very old non-POSIX usage forms */
 420         for (c = 1; c < argc; c++) {
 421                 if (strcmp ("-to", argv[c]) == 0)
 422                         strcpy (argv[c], "-t");
 423                 if (strcmp ("-wv", argv[c]) == 0)
 424                         strcpy (argv[c], "-w");
 425                 if (strcmp ("-cv", argv[c]) == 0)
 426                         strcpy (argv[c], "-c");
 427         }
 428
 429         while (1) {
 430                 c = getopt_long (argc, argv, "nhvVt:c:w:H:C:o:e:E:d:D:s:t:R:r:l:u:p:m:P:L:U:a:A:X:",
 431                                                                          longopts, &option);
 432
 433                 if (c == -1 || c == EOF)
 434                         break;
 435
 436                 switch (c) {
 437                 case '?':       /* usage */
 438                         usage2 (_("Unknown argument"), optarg);
 439                 case 'h':       /* help */
 440                         print_help ();
 441                         exit (STATE_OK);
 442                 case 'V':       /* version */
 443                         print_revision (progname, revision);
 444                         exit (STATE_OK);
 445                 case 'v': /* verbose */
 446                         verbose = TRUE;
 447                         break;
 448
 449         /* Connection info */
 450                 case 'C':                                                                       /* group or community */
 451                         community = optarg;
 452                         break;
 453                 case 'H':                                                                       /* Host or server */
 454                         server_address = optarg;
 455                         break;
 456                 case 'p':       /* TCP port number */
 457                         port = optarg;
 458                         break;
 459                 case 'm':      /* List of MIBS  */
 460                         miblist = optarg;
 461                         break;
 462                 case 'n':     /* usesnmpgetnext */
 463                         usesnmpgetnext = TRUE;
 464                         break;
 465                 case 'P':     /* SNMP protocol version */
 466                         proto = optarg;
 467                         break;
 468                 case 'L':     /* security level */
 469                         seclevel = optarg;
 470                         break;
 471                 case 'U':     /* security username */
 472                         secname = optarg;
 473                         break;
 474                 case 'a':     /* auth protocol */
 475                         authproto = optarg;
 476                         break;
 477                 case 'A':     /* auth passwd */
 478                         authpasswd = optarg;
 479                         break;
 480                 case 'X':     /* priv passwd */
 481                         privpasswd = optarg;
 482                         break;
 483                 case 't':       /* timeout period */
 484                         if (!is_integer (optarg))
 485                                 usage2 (_("Timeout interval must be a positive integer"), optarg);
 486                         else
 487                                 timeout_interval = atoi (optarg);
 488                         break;
 489
 490         /* Test parameters */
 491                 case 'c':                                                                       /* critical time threshold */
 492                         if (strspn (optarg, "0123456789:,") < strlen (optarg))
 493                                 usage2 (_("Invalid critical threshold: %s\n"), optarg);
 494                         for (ptr = optarg; ptr && jj < MAX_OIDS; jj++) {
 495                                 if (lu_getll (&lower_crit_lim[jj], ptr) == 1)
 496                                         eval_method[jj] |= CRIT_LT;
 497                                 if (lu_getul (&upper_crit_lim[jj], ptr) == 1)
 498                                         eval_method[jj] |= CRIT_GT;
 499                                 (ptr = index (ptr, ',')) ? ptr++ : ptr;
 500                         }
 501                         break;
 502                 case 'w':                                                                       /* warning time threshold */
 503                         if (strspn (optarg, "0123456789:,") < strlen (optarg))
 504                                 usage2 (_("Invalid warning threshold: %s\n"), optarg);
 505                         for (ptr = optarg; ptr && ii < MAX_OIDS; ii++) {
 506                                 if (lu_getll (&lower_warn_lim[ii], ptr) == 1)
 507                                         eval_method[ii] |= WARN_LT;
 508                                 if (lu_getul (&upper_warn_lim[ii], ptr) == 1)
 509                                         eval_method[ii] |= WARN_GT;
 510                                 (ptr = index (ptr, ',')) ? ptr++ : ptr;
 511                         }
 512                         break;
 513                 case 'e': /* PRELIMINARY - may change */
 514                 case 'E': /* PRELIMINARY - may change */
 515                         if (!is_integer (optarg))
 516                                 usage2 (_("Retries interval must be a positive integer"), optarg);
 517                         else
 518                                 retries = atoi(optarg);
 519                         break;
 520                 case 'o':                                                                       /* object identifier */
 521                         if ( strspn( optarg, "0123456789." ) != strlen( optarg ) ) {
 522                                         /*
 523                                          * we have something other than digits and periods, so we
 524                                          * have a mib variable, rather than just an SNMP OID, so
 525                                          * we have to actually read the mib files
 526                                          */
 527                                         needmibs = TRUE;
 528                         }
 529
 530                         for (ptr = optarg; (ptr = index (ptr, ',')); ptr++)
 531                                 ptr[0] = ' '; /* relpace comma with space */
 532                         for (ptr = optarg; (ptr = index (ptr, ' ')); ptr++)
 533                                 j++; /* count OIDs */
 534                         asprintf (&oid, "%s %s", (oid?oid:""), optarg);
 535                         if (c == 'E' || c == 'e') {
 536                                 jj++;
 537                                 ii++;
 538                         }
 539                         if (c == 'E')
 540                                 eval_method[j+1] |= WARN_PRESENT;
 541                         else if (c == 'e')
 542                                 eval_method[j+1] |= CRIT_PRESENT;
 543                         break;
 544                 case 's':                                                                       /* string or substring */
 545                         strncpy (string_value, optarg, sizeof (string_value) - 1);
 546                         string_value[sizeof (string_value) - 1] = 0;
 547                         eval_method[jj++] = CRIT_STRING;
 548                         ii++;
 549                         break;
 550                 case 'R':                                                                       /* regex */
 551                         cflags = REG_ICASE;
 552                 case 'r':                                                                       /* regex */
 553                         cflags |= REG_EXTENDED | REG_NOSUB | REG_NEWLINE;
 554                         strncpy (regex_expect, optarg, sizeof (regex_expect) - 1);
 555                         regex_expect[sizeof (regex_expect) - 1] = 0;
 556                         errcode = regcomp (&preg, regex_expect, cflags);
 557                         if (errcode != 0) {
 558                                 regerror (errcode, &preg, errbuf, MAX_INPUT_BUFFER);
 559                                 printf (_("Could Not Compile Regular Expression"));
 560                                 return ERROR;
 561                         }
 562                         eval_method[jj++] = CRIT_REGEX;
 563                         ii++;
 564                         break;
 565
 566         /* Format */
 567                 case 'd':                                                                       /* delimiter */
 568                         delimiter = strscpy (delimiter, optarg);
 569                         break;
 570                 case 'D':                                                                       /* output-delimiter */
 571                         output_delim = strscpy (output_delim, optarg);
 572                         break;
 573                 case 'l':                                                                       /* label */
 574                         label = optarg;
 575                         nlabels++;
 576                         if (nlabels >= labels_size) {
 577                                 labels_size += 8;
 578                                 labels = realloc (labels, labels_size);
 579                                 if (labels == NULL)
 580                                         die (STATE_UNKNOWN, _("Could not reallocate labels[%d]"), (int)nlabels);
 581                         }
 582                         labels[nlabels - 1] = optarg;
 583                         ptr = thisarg (optarg);
 584                         labels[nlabels - 1] = ptr;
 585                         if (strstr (ptr, "'") == ptr)
 586                                 labels[nlabels - 1] = ptr + 1;
 587                         while (ptr && (ptr = nextarg (ptr))) {
 588                                 if (nlabels >= labels_size) {
 589                                         labels_size += 8;
 590                                         labels = realloc (labels, labels_size);
 591                                         if (labels == NULL)
 592                                                 die (STATE_UNKNOWN, _("Could not reallocate labels\n"));
 593                                 }
 594                                 labels++;
 595                                 ptr = thisarg (ptr);
 596                                 if (strstr (ptr, "'") == ptr)
 597                                         labels[nlabels - 1] = ptr + 1;
 598                                 else
 599                                         labels[nlabels - 1] = ptr;
 600                         }
 601                         break;
 602                 case 'u':                                                                       /* units */
 603                         units = optarg;
 604                         nunits++;
 605                         if (nunits >= unitv_size) {
 606                                 unitv_size += 8;
 607                                 unitv = realloc (unitv, unitv_size);
 608                                 if (unitv == NULL)
 609                                         die (STATE_UNKNOWN, _("Could not reallocate units [%d]\n"), (int)nunits);
 610                         }
 611                         unitv[nunits - 1] = optarg;
 612                         ptr = thisarg (optarg);
 613                         unitv[nunits - 1] = ptr;
 614                         if (strstr (ptr, "'") == ptr)
 615                                 unitv[nunits - 1] = ptr + 1;
 616                         while (ptr && (ptr = nextarg (ptr))) {
 617                                 if (nunits >= unitv_size) {
 618                                         unitv_size += 8;
 619                                         unitv = realloc (unitv, unitv_size);
 620                                         if (units == NULL)
 621                                                 die (STATE_UNKNOWN, _("Could not realloc() units\n"));
 622                                 }
 623                                 nunits++;
 624                                 ptr = thisarg (ptr);
 625                                 if (strstr (ptr, "'") == ptr)
 626                                         unitv[nunits - 1] = ptr + 1;
 627                                 else
 628                                         unitv[nunits - 1] = ptr;
 629                         }
 630                         break;
 631
 632                 }
 633         }
 634
 635         if (server_address == NULL)
 636                 server_address = argv[optind];
 637
 638         if (community == NULL)
 639                 community = strdup (DEFAULT_COMMUNITY);
 640
 641
 642
 643         return validate_arguments ();
 644 }
 645
 646
 647 /******************************************************************************
 648
 649 @@-
 650 <sect3>
 651 <title>validate_arguments</title>
 652
 653 <para>&PROTO_validate_arguments;</para>
 654
 655 <para>Checks to see if the default miblist needs to be loaded. Also verifies
 656 the authentication and authorization combinations based on protocol version
 657 selected.</para>
 658
 659 <para></para>
 660
 661 </sect3>
 662 -@@
 663 ******************************************************************************/
 664
 665
 666
 667 int
 668 validate_arguments ()
 669 {
 670         /* check whether to load locally installed MIBS (CPU/disk intensive) */
 671         if (miblist == NULL) {
 672                 if ( needmibs  == TRUE ) {
 673                         miblist = strdup (DEFAULT_MIBLIST);
 674                 }else{
 675                         miblist = "''";                 /* don't read any mib files for numeric oids */
 676                 }
 677         }
 678
 679
 680         /* Need better checks to verify seclevel and authproto choices */
 681
 682         if (seclevel == NULL)
 683                 asprintf (&seclevel, "noAuthNoPriv");
 684
 685
 686         if (authproto == NULL )
 687                 asprintf(&authproto, DEFAULT_AUTH_PROTOCOL);
 688
 689
 690
 691         if (proto == NULL || (strcmp(proto,DEFAULT_PROTOCOL) == 0) ) {        /* default protocol version */
 692                 asprintf(&proto, DEFAULT_PROTOCOL);
 693                 asprintf(&authpriv, "%s%s", "-c ", community);
 694         }
 695         else if ( strcmp (proto, "2c") == 0 ) {                 /* snmpv2c args */
 696                 asprintf(&authpriv, "%s%s", "-c ", community);
 697         }
 698         else if ( strcmp (proto, "3") == 0 ) {                 /* snmpv3 args */
 699                 asprintf(&proto, "%s", "3");
 700
 701                 if ( (strcmp(seclevel, "noAuthNoPriv") == 0) || seclevel == NULL ) {
 702                         asprintf(&authpriv, "%s", "-l noAuthNoPriv" );
 703                 }
 704                 else if ( strcmp(seclevel, "authNoPriv") == 0 ) {
 705                         if ( secname == NULL || authpasswd == NULL) {
 706                                 printf (_("Missing secname (%s) or authpassword (%s) ! \n"),secname, authpasswd );
 707                                 print_usage ();
 708                                 exit (STATE_UNKNOWN);
 709                         }
 710                         asprintf(&authpriv, "-l authNoPriv -a %s -u %s -A %s ", authproto, secname, authpasswd);
 711                 }
 712                 else if ( strcmp(seclevel, "authPriv") == 0 ) {
 713                         if ( secname == NULL || authpasswd == NULL || privpasswd == NULL ) {
 714                                 printf (_("Missing secname (%s), authpassword (%s), or privpasswd (%s)! \n"),secname, authpasswd,privpasswd );
 715                                 print_usage ();
 716                                 exit (STATE_UNKNOWN);
 717                         }
 718                         asprintf(&authpriv, "-l authPriv -a %s -u %s -A %s -x DES -X %s ", authproto, secname, authpasswd, privpasswd);
 719                 }
 720
 721         }
 722         else {
 723                 usage2 (_("Invalid SNMP version"), proto);
 724         }
 725
 726         return OK;
 727 }
 728
 729
 730
 731 char *
 732 clarify_message (char *msg)
 733 {
 734         int i = 0;
 735         int foo;
 736         char tmpmsg_c[MAX_INPUT_BUFFER];
 737         char *tmpmsg = (char *) &tmpmsg_c;
 738         tmpmsg = strcpy (tmpmsg, msg);
 739         if (!strncmp (tmpmsg, " Hex:", 5)) {
 740                 tmpmsg = strtok (tmpmsg, ":");
 741                 while ((tmpmsg = strtok (NULL, " "))) {
 742                         foo = strtol (tmpmsg, NULL, 16);
 743                         /* Translate chars that are not the same value in the printers
 744                          * character set.
 745                          */
 746                         switch (foo) {
 747                         case 208:
 748                                 {
 749                                         foo = 197;
 750                                         break;
 751                                 }
 752                         case 216:
 753                                 {
 754                                         foo = 196;
 755                                         break;
 756                                 }
 757                         }
 758                         msg[i] = foo;
 759                         i++;
 760                 }
 761                 msg[i] = 0;
 762         }
 763         return (msg);
 764 }
 765
 766
 767
 768 int
 769 check_num (int i)
 770 {
 771         int result;
 772         result = STATE_OK;
 773         if (eval_method[i] & WARN_GT && eval_method[i] & WARN_LT &&
 774                         lower_warn_lim[i] > upper_warn_lim[i]) {
 775                 if (response_value[i] <= lower_warn_lim[i] &&
 776                                 response_value[i] >= upper_warn_lim[i]) {
 777                         result = STATE_WARNING;
 778                 }
 779         }
 780         else if
 781                 ((eval_method[i] & WARN_GT && response_value[i] > upper_warn_lim[i]) ||
 782                  (eval_method[i] & WARN_GE && response_value[i] >= upper_warn_lim[i]) ||
 783                  (eval_method[i] & WARN_LT && response_value[i] < lower_warn_lim[i]) ||
 784                  (eval_method[i] & WARN_LE && response_value[i] <= lower_warn_lim[i]) ||
 785                  (eval_method[i] & WARN_EQ && response_value[i] == upper_warn_lim[i]) ||
 786                  (eval_method[i] & WARN_NE && response_value[i] != upper_warn_lim[i])) {
 787                 result = STATE_WARNING;
 788         }
 789
 790         if (eval_method[i] & CRIT_GT && eval_method[i] & CRIT_LT &&
 791                         lower_crit_lim[i] > upper_crit_lim[i]) {
 792                 if (response_value[i] <= lower_crit_lim[i] &&
 793                                 response_value[i] >= upper_crit_lim[i]) {
 794                         result = STATE_CRITICAL;
 795                 }
 796         }
 797         else if
 798                 ((eval_method[i] & CRIT_GT && response_value[i] > upper_crit_lim[i]) ||
 799                  (eval_method[i] & CRIT_GE && response_value[i] >= upper_crit_lim[i]) ||
 800                  (eval_method[i] & CRIT_LT && response_value[i] < lower_crit_lim[i]) ||
 801                  (eval_method[i] & CRIT_LE && response_value[i] <= lower_crit_lim[i]) ||
 802                  (eval_method[i] & CRIT_EQ && response_value[i] == upper_crit_lim[i]) ||
 803                  (eval_method[i] & CRIT_NE && response_value[i] != upper_crit_lim[i])) {
 804                 result = STATE_CRITICAL;
 805         }
 806
 807         return result;
 808 }
 809
 810
 811
 812 int
 813 lu_getll (unsigned long *ll, char *str)
 814 {
 815         char tmp[100];
 816         if (strchr (str, ':') == NULL)
 817                 return 0;
 818         if (strchr (str, ',') != NULL && (strchr (str, ',') < strchr (str, ':')))
 819                 return 0;
 820         if (sscanf (str, "%lu%[:]", ll, tmp) == 2)
 821                 return 1;
 822         return 0;
 823 }
 824
 825
 826
 827 int
 828 lu_getul (unsigned long *ul, char *str)
 829 {
 830         char tmp[100];
 831         if (sscanf (str, "%lu%[^,]", ul, tmp) == 1)
 832                 return 1;
 833         if (sscanf (str, ":%lu%[^,]", ul, tmp) == 1)
 834                 return 1;
 835         if (sscanf (str, "%*u:%lu%[^,]", ul, tmp) == 1)
 836                 return 1;
 837         return 0;
 838 }
 839
 840
 841
 842 /* trim leading whitespace
 843          if there is a leading quote, make sure it balances */
 844
 845 char *
 846 thisarg (char *str)
 847 {
 848         str += strspn (str, " \t\r\n"); /* trim any leading whitespace */
 849         if (strstr (str, "'") == str) { /* handle SIMPLE quoted strings */
 850                 if (strlen (str) == 1 || !strstr (str + 1, "'"))
 851                         die (STATE_UNKNOWN, _("Unbalanced quotes\n"));
 852         }
 853         return str;
 854 }
 855
 856
 857
 858 /* if there's a leading quote, advance to the trailing quote
 859          set the trailing quote to '\x0'
 860          if the string continues, advance beyond the comma */
 861
 862 char *
 863 nextarg (char *str)
 864 {
 865         if (strstr (str, "'") == str) {
 866                 str[0] = 0;
 867                 if (strlen (str) > 1) {
 868                         str = strstr (str + 1, "'");
 869                         return (++str);
 870                 }
 871                 else {
 872                         return NULL;
 873                 }
 874         }
 875         if (strstr (str, ",") == str) {
 876                 str[0] = 0;
 877                 if (strlen (str) > 1) {
 878                         return (++str);
 879                 }
 880                 else {
 881                         return NULL;
 882                 }
 883         }
 884         if ((str = strstr (str, ",")) && strlen (str) > 1) {
 885                 str[0] = 0;
 886                 return (++str);
 887         }
 888         return NULL;
 889 }
 890
 891
 892
 893 void
 894 print_help (void)
 895 {
 896         print_revision (progname, revision);
 897
 898         printf (COPYRIGHT, copyright, email);
 899
 900         printf ("%s\n", _("Check status of remote machines and obtain sustem information via SNMP"));
 901
 902   printf ("\n\n");
 903
 904         print_usage ();
 905
 906         printf (_(UT_HELP_VRSN));
 907
 908         printf (_(UT_HOST_PORT), 'p', DEFAULT_PORT);
 909
 910         /* SNMP and Authentication Protocol */
 911         printf (" %s\n", "-n, --next");
 912   printf ("    %s\n", _("Use SNMP GETNEXT instead of SNMP GET"));
 913   printf (" %s\n", "-P, --protocol=[1|2c|3]");
 914   printf ("    %s\n", _("SNMP protocol version"));
 915   printf (" %s\n", "-L, --seclevel=[noAuthNoPriv|authNoPriv|authPriv]");
 916   printf ("    %s\n", _("SNMPv3 securityLevel"));
 917   printf (" %s\n", "-a, --authproto=[MD5|SHA]");
 918   printf ("    %s\n", _("SNMPv3 auth proto"));
 919
 920         /* Authentication Tokens*/
 921         printf (" %s\n", "-C, --community=STRING");
 922   printf ("    %s\n", _("Optional community string for SNMP communication"));
 923   printf (_("(default is \"%s\")"),DEFAULT_COMMUNITY);
 924   printf (" %s\n", "-U, --secname=USERNAME");
 925   printf ("    %s\n", _("SNMPv3 username"));
 926   printf (" %s\n", "-A, --authpassword=PASSWORD");
 927   printf ("    %s\n", _("SNMPv3 authentication password"));
 928   printf (" %s\n", "-X, --privpasswd=PASSWORD");
 929   printf ("    %s\n", _("SNMPv3 crypt passwd (DES)"));
 930
 931         /* OID Stuff */
 932         printf (" %s\n", "-o, --oid=OID(s)");
 933   printf ("    %s\n", _("Object identifier(s) or SNMP variables whose value you wish to query"));
 934   printf (" %s\n", "-m, --miblist=STRING");
 935   printf ("    %s\n", _("List of MIBS to be loaded (default = none if using numeric oids or 'ALL'"));
 936   printf ("    %s\n", _("for symbolic oids.)"));
 937   printf (" %s\n", "-d, --delimiter=STRING");
 938   printf (_("    Delimiter to use when parsing returned data. Default is \"%s\""), DEFAULT_DELIMITER);
 939   printf ("    %s\n", _("Any data on the right hand side of the delimiter is considered"));
 940   printf ("    %s\n", _("to be the data that should be used in the evaluation."));
 941
 942         /* Tests Against Integers */
 943         printf (" %s\n", "-w, --warning=INTEGER_RANGE(s)");
 944   printf ("    %s\n", _("Range(s) which will not result in a WARNING status"));
 945   printf (" %s\n", "-c, --critical=INTEGER_RANGE(s)");
 946   printf ("    %s\n", _("Range(s) which will not result in a CRITICAL status"));
 947
 948         /* Tests Against Strings */
 949         printf (" %s\n", "-s, --string=STRING");
 950   printf ("    %s\n", _("Return OK state (for that OID) if STRING is an exact match"));
 951   printf (" %s\n", "-r, --ereg=REGEX");
 952   printf ("    %s\n", _("Return OK state (for that OID) if extended regular expression REGEX matches"));
 953   printf (" %s\n", "-R, --eregi=REGEX");
 954   printf ("    %s\n", _("Return OK state (for that OID) if case-insensitive extended REGEX matches"));
 955   printf (" %s\n", "-l, --label=STRING");
 956   printf ("    %s\n", _("Prefix label for output from plugin (default -s 'SNMP')"));
 957
 958         /* Output Formatting */
 959         printf (" %s\n", "-u, --units=STRING");
 960   printf ("    %s\n", _("Units label(s) for output data (e.g., 'sec.')."));
 961   printf (" %s\n", "-D, --output-delimiter=STRING");
 962   printf ("    %s\n", _("Separates output on multiple OID requests"));
 963
 964         printf (_(UT_TIMEOUT), DEFAULT_SOCKET_TIMEOUT);
 965
 966         printf (_(UT_VERBOSE));
 967
 968         printf ("%s\n", _("This plugin uses the 'snmpget' command included with the NET-SNMP package."));
 969   printf ("%s\n", _("if you don't have the package installed, you will need to download it from"));
 970   printf ("%s\n", _("http://net-snmp.sourceforge.net before you can use this plugin."));
 971
 972         printf ("%s\n", _("- Multiple OIDs may be indicated by a comma- or space-delimited list (lists with"));
 973   printf ("%s\n", _(" internal spaces must be quoted) [max 8 OIDs]"));
 974
 975         printf ("%s\n", _("- Ranges are inclusive and are indicated with colons. When specified as"));
 976   printf ("%s\n", _(" 'min:max' a STATE_OK will be returned if the result is within the indicated"));
 977   printf ("%s\n", _(" range or is equal to the upper or lower bound. A non-OK state will be"));
 978   printf ("%s\n", _(" returned if the result is outside the specified range."));
 979
 980         printf ("%s\n", _("- If specified in the order 'max:min' a non-OK state will be returned if the"));
 981   printf ("%s\n", _(" result is within the (inclusive) range."));
 982
 983         printf ("%s\n", _("- Upper or lower bounds may be omitted to skip checking the respective limit."));
 984   printf ("%s\n", _("- Bare integers are interpreted as upper limits."));
 985   printf ("%s\n", _("- When checking multiple OIDs, separate ranges by commas like '-w 1:10,1:,:20'"));
 986   printf ("%s\n", _("- Note that only one string and one regex may be checked at present"));
 987   printf ("%s\n", _("- All evaluation methods other than PR, STR, and SUBSTR expect that the value"));
 988   printf ("%s\n", _(" returned from the SNMP query is an unsigned integer."));
 989
 990         printf (_(UT_SUPPORT));
 991 }
 992
 993
 994
 995 void
 996 print_usage (void)
 997 {
 998   printf (_("Usage:"));
 999         printf ("%s -H <ip_address> -o <OID> [-w warn_range] [-c crit_range] \n\
1000                   [-C community] [-s string] [-r regex] [-R regexi]\n\
1001                   [-t timeout] [-e retries]\n\
1002                   [-l label] [-u units] [-p port-number] [-d delimiter]\n\
1003                   [-D output-delimiter] [-m miblist] [-P snmp version]\n\
1004                   [-L seclevel] [-U secname] [-a authproto] [-A authpasswd]\n\
1005                   [-X privpasswd]\n", progname);
1006 }