plugins/urlize.c

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