plugins/urlize.c

   1 /*****************************************************************************
   2 *
   3 * Nagios urlize plugin
   4 *
   5 * License: GPL
   6 * Copyright (c) 2000-2007 Nagios Plugins Development 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) in HTML <A>
  15 * tags, thus displaying the plugin output in as a clickable link in the
  16 * Nagios status screen.  The return status is the same as the invoked plugin.
  17 *
  18 *
  19 * This program is free software: you can redistribute it and/or modify
  20 * it under the terms of the GNU General Public License as published by
  21 * the Free Software Foundation, either version 3 of the License, or
  22 * (at your option) any later version.
  23 *
  24 * This program is distributed in the hope that it will be useful,
  25 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  27 * GNU General Public License for more details.
  28 *
  29 * You should have received a copy of the GNU General Public License
  30 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  31 *
  32 * $Id$
  33 *
  34 *****************************************************************************/
  35
  36 const char *progname = "urlize";
  37 const char *revision = "$Revision$";
  38 const char *copyright = "2000-2006";
  39 const char *email = "nagiosplug-devel@lists.sourceforge.net";
  40
  41 #include "common.h"
  42 #include "utils.h"
  43 #include "popen.h"
  44
  45 #define PERF_CHARACTER "|"
  46 #define NEWLINE_CHARACTER '\n'
  47
  48 void print_help (void);
  49 void print_usage (void);
  50
  51 int
  52 main (int argc, char **argv)
  53 {
  54         int found = 0, result = STATE_UNKNOWN;
  55         char *url = NULL;
  56         char *cmd;
  57         char *buf;
  58         char *nstr;
  59         char tstr[MAX_INPUT_BUFFER];
  60
  61         int c;
  62         int option = 0;
  63         static struct option longopts[] = {
  64                 {"help", no_argument, 0, 'h'},
  65                 {"version", no_argument, 0, 'V'},
  66                 {"url", required_argument, 0, 'u'},
  67                 {0, 0, 0, 0}
  68         };
  69
  70         setlocale (LC_ALL, "");
  71         bindtextdomain (PACKAGE, LOCALEDIR);
  72         textdomain (PACKAGE);
  73
  74         /* Need at least 2 args */
  75         if (argc < 3) {
  76                 print_help();
  77                 exit (STATE_UNKNOWN);
  78         }
  79
  80         while (1) {
  81                 c = getopt_long (argc, argv, "+hVu:", longopts, &option);
  82
  83                 if (c == -1 || c == EOF)
  84                         break;
  85
  86                 switch (c) {
  87                 case 'h':     /* help */
  88                         print_help ();
  89                         exit (EXIT_SUCCESS);
  90                         break;
  91                 case 'V':     /* version */
  92                         print_revision (progname, revision);
  93                         exit (EXIT_SUCCESS);
  94                         break;
  95                 case 'u':
  96                         url = strdup (argv[optind]);
  97                         break;
  98                 case '?':
  99                 default:
 100                         usage5 ();
 101                 }
 102         }
 103
 104         if (url == NULL)
 105                 url = strdup (argv[optind++]);
 106
 107         cmd = strdup (argv[optind++]);
 108         for (c = optind; c < argc; c++) {
 109                 asprintf (&cmd, "%s %s", cmd, argv[c]);
 110         }
 111
 112         child_process = spopen (cmd);
 113         if (child_process == NULL) {
 114                 printf (_("Could not open pipe: %s\n"), cmd);
 115                 exit (STATE_UNKNOWN);
 116         }
 117
 118         child_stderr = fdopen (child_stderr_array[fileno (child_process)], "r");
 119         if (child_stderr == NULL) {
 120                 printf (_("Could not open stderr for %s\n"), cmd);
 121         }
 122
 123         bzero(tstr, sizeof(tstr));
 124         buf = malloc(MAX_INPUT_BUFFER);
 125         printf ("<A href=\"%s\">", argv[1]);
 126         while (fgets (buf, MAX_INPUT_BUFFER - 1, child_process)) {
 127                 found++;
 128                 /* Collect the string in temp str so we can tokenize */
 129                 strcat(tstr, buf);
 130         }
 131
 132         if (!found)
 133                 die (STATE_UNKNOWN,
 134                      _("%s UNKNOWN - No data received from host\nCMD: %s</A>\n"),
 135                      argv[0], cmd);
 136
 137
 138         /* chop the newline character */
 139         if ((nstr = strchr(tstr, NEWLINE_CHARACTER)) != NULL)
 140                 *nstr = '\0';
 141
 142         /* tokenize the string for Perfdata if there is some */
 143         nstr = strtok(tstr, PERF_CHARACTER);
 144         printf ("%s", nstr);
 145         printf ("</A>");
 146         nstr = strtok(NULL, PERF_CHARACTER);
 147         if (nstr != NULL)
 148                 printf (" | %s", nstr);
 149
 150         /* close the pipe */
 151         result = spclose (child_process);
 152
 153         /* WARNING if output found on stderr */
 154         if (fgets (buf, MAX_INPUT_BUFFER - 1, child_stderr))
 155                 result = max_state (result, STATE_WARNING);
 156
 157         /* close stderr */
 158         (void) fclose (child_stderr);
 159
 160         return result;
 161 }
 162
 163
 164
 165 void
 166 print_help (void)
 167 {
 168         print_revision (progname, revision);
 169
 170         printf ("Copyright (c) 2000 Karl DeBisschop <kdebisschop@users.sourceforge.net>\n");
 171         printf (COPYRIGHT, copyright, email);
 172
 173         printf ("%s\n", _("This plugin wraps the text output of another command (plugin)"));
 174   printf ("%s\n", _("in HTML <A> tags, thus displaying the plugin output in as a clickable link in"));
 175   printf ("%s\n", _("the Nagios status screen.  The return status is the same as the invoked plugin."));
 176
 177   printf ("\n\n");
 178
 179         print_usage ();
 180
 181   printf (_(UT_HELP_VRSN));
 182
 183   printf ("\n");
 184   printf ("%s\n", _("Examples:"));
 185         printf ("%s\n", _("Pay close attention to quoting to ensure that the shell passes the expected"));
 186   printf ("%s\n\n", _("data to the plugin. For example, in:"));
 187   printf (" %s\n\n", _("urlize http://example.com/ check_http -H example.com -r 'two words'"));
 188   printf ("    %s\n", _("the shell will remove the single quotes and urlize will see:"));
 189   printf (" %s\n\n", _("urlize http://example.com/ check_http -H example.com -r two words"));
 190   printf ("    %s\n\n", _("You probably want:"));
 191   printf (" %s\n", _("urlize http://example.com/ \"check_http -H example.com -r 'two words'\""));
 192
 193         printf (_(UT_SUPPORT));
 194 }
 195
 196
 197
 198 void
 199 print_usage (void)
 200 {
 201   printf (_("Usage:"));
 202         printf ("%s <url> <plugin> <arg1> ... <argN>\n", progname);
 203 }