plugins/urlize.c

   1 /*****************************************************************************
   2 *
   3 * Monitoring urlize plugin
   4 *
   5 * License: GPL
   6 * Copyright (c) 2000-2007 Monitoring Plugins Development Team
   7 *
   8 * Description:
   9 *
  10 * This file contains the urlize plugin
  11 *
  12 * This plugin wraps the text output of another command (plugin) in HTML <A>
  13 * tags.  This plugin returns the status of the invoked plugin.
  14 *
  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 3 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, see <http://www.gnu.org/licenses/>.
  28 *
  29 *
  30 *****************************************************************************/
  31
  32 const char *progname = "urlize";
  33 const char *copyright = "2000-2006";
  34 const char *email = "devel@monitoring-plugins.org";
  35
  36 #include "common.h"
  37 #include "utils.h"
  38 #include "popen.h"
  39
  40 #define PERF_CHARACTER "|"
  41 #define NEWLINE_CHARACTER '\n'
  42
  43 void print_help (void);
  44 void print_usage (void);
  45
  46 int
  47 main (int argc, char **argv)
  48 {
  49         int found = 0, result = STATE_UNKNOWN;
  50         char *url = NULL;
  51         char *cmd;
  52         char *buf;
  53         char *nstr;
  54         char tstr[MAX_INPUT_BUFFER];
  55
  56         int c;
  57         int option = 0;
  58         static struct option longopts[] = {
  59                 {"help", no_argument, 0, 'h'},
  60                 {"version", no_argument, 0, 'V'},
  61                 {"url", required_argument, 0, 'u'},
  62                 {0, 0, 0, 0}
  63         };
  64
  65         setlocale (LC_ALL, "");
  66         bindtextdomain (PACKAGE, LOCALEDIR);
  67         textdomain (PACKAGE);
  68
  69         /* Need at least 2 args */
  70         if (argc < 3) {
  71                 print_help();
  72                 exit (STATE_UNKNOWN);
  73         }
  74
  75         while (1) {
  76                 c = getopt_long (argc, argv, "+hVu:", longopts, &option);
  77
  78                 if (c == -1 || c == EOF)
  79                         break;
  80
  81                 switch (c) {
  82                 case 'h':     /* help */
  83                         print_help ();
  84                         exit (EXIT_SUCCESS);
  85                         break;
  86                 case 'V':     /* version */
  87                         print_revision (progname, NP_VERSION);
  88                         exit (EXIT_SUCCESS);
  89                         break;
  90                 case 'u':
  91                         url = strdup (argv[optind]);
  92                         break;
  93                 case '?':
  94                 default:
  95                         usage5 ();
  96                 }
  97         }
  98
  99         if (url == NULL)
 100                 url = strdup (argv[optind++]);
 101
 102         cmd = strdup (argv[optind++]);
 103         for (c = optind; c < argc; c++) {
 104                 xasprintf (&cmd, "%s %s", cmd, argv[c]);
 105         }
 106
 107         child_process = spopen (cmd);
 108         if (child_process == NULL) {
 109                 printf (_("Could not open pipe: %s\n"), cmd);
 110                 exit (STATE_UNKNOWN);
 111         }
 112
 113         child_stderr = fdopen (child_stderr_array[fileno (child_process)], "r");
 114         if (child_stderr == NULL) {
 115                 printf (_("Could not open stderr for %s\n"), cmd);
 116         }
 117
 118         bzero(tstr, sizeof(tstr));
 119         buf = malloc(MAX_INPUT_BUFFER);
 120         printf ("<A href=\"%s\">", argv[1]);
 121         while (fgets (buf, MAX_INPUT_BUFFER - 1, child_process)) {
 122                 found++;
 123                 /* Collect the string in temp str so we can tokenize */
 124                 strcat(tstr, buf);
 125         }
 126
 127         if (!found)
 128                 die (STATE_UNKNOWN,
 129                      _("%s UNKNOWN - No data received from host\nCMD: %s</A>\n"),
 130                      argv[0], cmd);
 131
 132
 133         /* chop the newline character */
 134         if ((nstr = strchr(tstr, NEWLINE_CHARACTER)) != NULL)
 135                 *nstr = '\0';
 136
 137         /* tokenize the string for Perfdata if there is some */
 138         nstr = strtok(tstr, PERF_CHARACTER);
 139         printf ("%s", nstr);
 140         printf ("</A>");
 141         nstr = strtok(NULL, PERF_CHARACTER);
 142         if (nstr != NULL)
 143                 printf (" | %s", nstr);
 144
 145         /* close the pipe */
 146         result = spclose (child_process);
 147
 148         /* WARNING if output found on stderr */
 149         if (fgets (buf, MAX_INPUT_BUFFER - 1, child_stderr))
 150                 result = max_state (result, STATE_WARNING);
 151
 152         /* close stderr */
 153         (void) fclose (child_stderr);
 154
 155         return result;
 156 }
 157
 158
 159
 160 void
 161 print_help (void)
 162 {
 163         print_revision (progname, NP_VERSION);
 164
 165         printf ("Copyright (c) 2000 Karl DeBisschop <kdebisschop@users.sourceforge.net>\n");
 166         printf (COPYRIGHT, copyright, email);
 167
 168         printf ("%s\n", _("This plugin wraps the text output of another command (plugin) in HTML <A>"));
 169   printf ("%s\n", _("tags, thus displaying the child plugin's output as a clickable link in compatible"));
 170   printf ("%s\n", _("monitoring status screen. This plugin returns the status of the invoked plugin."));
 171
 172   printf ("\n\n");
 173
 174         print_usage ();
 175
 176   printf (UT_HELP_VRSN);
 177
 178   printf ("\n");
 179   printf ("%s\n", _("Examples:"));
 180         printf ("%s\n", _("Pay close attention to quoting to ensure that the shell passes the expected"));
 181   printf ("%s\n\n", _("data to the plugin. For example, in:"));
 182   printf (" %s\n\n", _("urlize http://example.com/ check_http -H example.com -r 'two words'"));
 183   printf ("    %s\n", _("the shell will remove the single quotes and urlize will see:"));
 184   printf (" %s\n\n", _("urlize http://example.com/ check_http -H example.com -r two words"));
 185   printf ("    %s\n\n", _("You probably want:"));
 186   printf (" %s\n", _("urlize http://example.com/ \"check_http -H example.com -r 'two words'\""));
 187
 188         printf (UT_SUPPORT);
 189 }
 190
 191
 192
 193 void
 194 print_usage (void)
 195 {
 196   printf ("%s\n", _("Usage:"));
 197         printf ("%s <url> <plugin> <arg1> ... <argN>\n", progname);
 198 }