ccan/oserver/_info

   1 #include <string.h>
   2 #include "config.h"
   3
   4 /**
   5  * oserver - a demonstration module for LCA2011
   6  *
   7  * This code shows off the features of CCAN and various C cantrips.
   8  *
   9  * License: GPL
  10  *
  11  * Example:
  12  *      #include <sys/types.h>
  13  *      #include <sys/socket.h>
  14  *      #include <ccan/oserver/oserver.h>
  15  *      #include <ccan/opt/opt.h>
  16  *      #include <err.h>
  17  *      #include <stdlib.h>
  18  *
  19  *      #define STATE_FILE "/var/run/oserver/dump"
  20  *
  21  *      int main(int argc, char *argv[])
  22  *      {
  23  *              struct tevent_context *ev = tevent_context_init(NULL);
  24  *              unsigned int port = OSERVER_PORT;
  25  *              bool restore = false;
  26  *              char **restore_argv;
  27  *
  28  *              // Save args before opt_parse mangles them.
  29  *              restore_argv = talloc_array(NULL, char *, argc+2);
  30  *              restore_argv[0] = argv[0];
  31  *              restore_argv[1] = "--restore";
  32  *              memcpy(restore_argv+2, argv+1, sizeof(argv[0])*argc);
  33  *
  34  *              opt_register_noarg("--help|--usage|-h", opt_usage_and_exit,
  35  *                                 "\nA oserver program", "Usage information");
  36  *              opt_register_arg("--port", opt_set_uintval, opt_show_uintval,
  37  *                               &port, "Server port number");
  38  *              opt_register_noarg("--restore", opt_set_bool,
  39  *                                 &restore, opt_hidden);
  40  *
  41  *              opt_parse(&argc, argv, opt_log_stderr_exit);
  42  *              if (argc != 1)
  43  *                      opt_log_stderr_exit("Unknown extra arguments");
  44  *
  45  *              if (restore) {
  46  *                      if (!oserver_restore(ev, STATE_FILE))
  47  *                              err(1, "Restoring server");
  48  *              } else if (!oserver_setup(ev, port, STATE_FILE, restore_argv))
  49  *                      err(1, "Failed to set up server");
  50  *
  51  *              while (tevent_loop_wait(ev) == 0);
  52  *              err(1, "Serving client");
  53  *      }
  54  */
  55 int main(int argc, char *argv[])
  56 {
  57         /* Expect exactly one argument */
  58         if (argc != 2)
  59                 return 1;
  60
  61         if (strcmp(argv[1], "depends") == 0) {
  62                 printf("ccan/read_write_all\n");
  63                 printf("ccan/str\n");
  64                 printf("ccan/foreach\n");
  65                 printf("ccan/failtest\n");
  66                 printf("ccan/opt\n");
  67                 printf("ccan/array_size\n");
  68                 printf("ccan/tevent\n");
  69                 printf("ccan/cdump\n");
  70                 printf("ccan/grab_file\n");
  71                 return 0;
  72         }
  73
  74         return 1;
  75 }