plugins/urlize.c

   1 /******************************************************************************
   2 *
   3 * Nagios urlize plugin
   4 *
   5 * License: GPL
   6 * Copyright (c) 2000-2006 nagios-plugins team
   7 *
   8 * Last Modified: $Date$
   9 *
  10 * Description:
  11 *
  12 * This file contains the urlize plugin
  13 *
  14 *  This plugin wraps the text output of another command (plugin)
  15 *  in HTML <A> tags, thus displaying the plugin output in as a clickable link in
  16 *  the Nagios status screen.  The return status is the same as the invoked plugin.
  17 *
  18 * License Information:
  19 *
  20 * This program is free software; you can redistribute it and/or modify
  21 * it under the terms of the GNU General Public License as published by
  22 * the Free Software Foundation; either version 2 of the License, or
  23 * (at your option) any later version.
  24 *
  25 * This program is distributed in the hope that it will be useful,
  26 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  27 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  28 * GNU General Public License for more details.
  29 *
  30 * You should have received a copy of the GNU General Public License
  31 * along with this program; if not, write to the Free Software
  32 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  33 *
  34
  35  $Id$
  36
  37 ******************************************************************************/
  38
  39 const char *progname = "urlize";
  40 const char *revision = "$Revision$";
  41 const char *copyright = "2000-2006";
  42 const char *email = "nagiosplug-devel@lists.sourceforge.net";
  43
  44 #include "common.h"
  45 #include "utils.h"
  46 #include "popen.h"
  47
  48 #define PERF_CHARACTER "|"
  49 #define NEWLINE_CHARACTER '\n'
  50
  51 void print_help (void);
  52 void print_usage (void);
  53
  54 int
  55 main (int argc, char **argv)
  56 {
  57         int found = 0, result = STATE_UNKNOWN;
  58         char *url = NULL;
  59         char *cmd;
  60         char *buf;
  61         char *nstr;
  62         char tstr[MAX_INPUT_BUFFER];
  63
  64         int c;
  65         int option = 0;
  66         static struct option longopts[] = {
  67                 {"help", no_argument, 0, 'h'},
  68                 {"version", no_argument, 0, 'V'},
  69                 {"url", required_argument, 0, 'u'},
  70                 {0, 0, 0, 0}
  71         };
  72
  73         setlocale (LC_ALL, "");
  74         bindtextdomain (PACKAGE, LOCALEDIR);
  75         textdomain (PACKAGE);
  76
  77         /* Need at least 2 args */
  78         if (argc < 3) {
  79                 print_help();
  80                 exit (STATE_UNKNOWN);
  81         }
  82
  83         while (1) {
  84                 c = getopt_long (argc, argv, "+hVu:", longopts, &option);
  85
  86                 if (c == -1 || c == EOF)
  87                         break;
  88
  89                 switch (c) {
  90                 case 'h':     /* help */
  91                         print_help ();
  92                         exit (EXIT_SUCCESS);
  93                         break;
  94                 case 'V':     /* version */
  95                         print_revision (progname, revision);
  96                         exit (EXIT_SUCCESS);
  97                         break;
  98                 case 'u':
  99                         url = strdup (argv[optind]);
 100                         break;
 101                 case '?':
 102                 default:
 103                         usage5 ();
 104                 }
 105         }
 106
 107         if (url == NULL)
 108                 url = strdup (argv[optind++]);
 109
 110         cmd = strdup (argv[optind++]);
 111         for (c = optind; c < argc; c++) {
 112                 asprintf (&cmd, "%s %s", cmd, argv[c]);
 113         }
 114
 115         child_process = spopen (cmd);
 116         if (child_process == NULL) {
 117                 printf (_("Could not open pipe: %s\n"), cmd);
 118                 exit (STATE_UNKNOWN);
 119         }
 120
 121         child_stderr = fdopen (child_stderr_array[fileno (child_process)], "r");
 122         if (child_stderr == NULL) {
 123                 printf (_("Could not open stderr for %s\n"), cmd);
 124         }
 125
 126         bzero(tstr, sizeof(tstr));
 127         buf = malloc(MAX_INPUT_BUFFER);
 128         printf ("<A href=\"%s\">", argv[1]);
 129         while (fgets (buf, MAX_INPUT_BUFFER - 1, child_process)) {
 130                 found++;
 131                 /* Collect the string in temp str so we can tokenize */
 132                 strcat(tstr, buf);
 133         }
 134
 135         if (!found)
 136                 die (STATE_UNKNOWN,
 137                      _("%s UNKNOWN - No data received from host\nCMD: %s</A>\n"),
 138                      argv[0], cmd);
 139
 140
 141         /* chop the newline character */
 142         if ((nstr = strchr(tstr, NEWLINE_CHARACTER)) != NULL)
 143                 *nstr = '\0';
 144
 145         /* tokenize the string for Perfdata if there is some */
 146         nstr = strtok(tstr, PERF_CHARACTER);
 147         printf ("%s", nstr);
 148         printf ("</A>");
 149         nstr = strtok(NULL, PERF_CHARACTER);
 150         if (nstr != NULL)
 151                 printf (" | %s", nstr);
 152
 153         /* close the pipe */
 154         result = spclose (child_process);
 155
 156         /* WARNING if output found on stderr */
 157         if (fgets (buf, MAX_INPUT_BUFFER - 1, child_stderr))
 158                 result = max_state (result, STATE_WARNING);
 159
 160         /* close stderr */
 161         (void) fclose (child_stderr);
 162
 163         return result;
 164 }
 165
 166
 167
 168 void
 169 print_help (void)
 170 {
 171         print_revision (progname, revision);
 172
 173         printf ("Copyright (c) 2000 Karl DeBisschop <kdebisschop@users.sourceforge.net>\n");
 174         printf (COPYRIGHT, copyright, email);
 175
 176         printf ("%s\n", _("This plugin wraps the text output of another command (plugin)"));
 177   printf ("%s\n", _("in HTML <A> tags, thus displaying the plugin output in as a clickable link in"));
 178   printf ("%s\n", _("the Nagios status screen.  The return status is the same as the invoked plugin."));
 179
 180   printf ("\n\n");
 181
 182         print_usage ();
 183
 184   printf (_(UT_HELP_VRSN));
 185
 186   printf ("\n");
 187   printf ("%s\n", _("Examples:"));
 188         printf ("%s\n", _("Pay close attention to quoting to ensure that the shell passes the expected"));
 189   printf ("%s\n\n", _("data to the plugin. For example, in:"));
 190   printf (" %s\n\n", _("urlize http://example.com/ check_http -H example.com -r 'two words'"));
 191   printf ("    %s\n", _("the shell will remove the single quotes and urlize will see:"));
 192   printf (" %s\n\n", _("urlize http://example.com/ check_http -H example.com -r two words"));
 193   printf ("    %s\n\n", _("You probably want:"));
 194   printf (" %s\n", _("urlize http://example.com/ \"check_http -H example.com -r 'two words'\""));
 195
 196         printf (_(UT_SUPPORT));
 197 }
 198
 199
 200
 201 void
 202 print_usage (void)
 203 {
 204   printf (_("Usage:"));
 205         printf ("%s <url> <plugin> <arg1> ... <argN>\n", progname);
 206 }