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  • Committer: Teddy Hogeborn
  • Date: 2019-07-14 23:39:53 UTC
  • Revision ID: teddy@recompile.se-20190714233953-1zmsd3o062xloazt
Server bug fix: Allow restarts when using port= option

If the Mandos server is configured to use a specific TCP port to
listen to (by using the port= option in mandos.conf or the command
line --port option), that port becomes unusable for a time when the
Mandos server is restarted, making restarts fail.  Avoid this by, if a
port number is specified, using SO_REUSEADDR when binding the
listening TCP socket to a port number.

* mandos (IPv6_TCPServer.server_bind): Set self.allow_reuse_address if
                                       a port number is specified.

Reported-by: Juan Miguel Alcarria Herrera <juanmi@arco2000.es>

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Lines of Context:
plugin-runner.c
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__attribute__((nonnull))
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static void free_plugin(plugin *plugin_node){
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  for(char **arg = plugin_node->argv; *arg != NULL; arg++){
 
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  for(char **arg = (plugin_node->argv)+1; *arg != NULL; arg++){
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    free(*arg);
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  }
 
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  free(plugin_node->name);
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  free(plugin_node->argv);
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  for(char **env = plugin_node->environ; *env != NULL; env++){
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    free(*env);
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    case '?':                   /* --help */
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      state->flags &= ~(unsigned int)ARGP_NO_EXIT; /* force exit */
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      argp_state_help(state, state->out_stream, ARGP_HELP_STD_HELP);
 
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      __builtin_unreachable();
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    case -3:                    /* --usage */
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      state->flags &= ~(unsigned int)ARGP_NO_EXIT; /* force exit */
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      argp_state_help(state, state->out_stream,
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                      ARGP_HELP_USAGE | ARGP_HELP_EXIT_OK);
 
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      __builtin_unreachable();
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    case 'V':                   /* --version */
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      fprintf(state->out_stream, "%s\n", argp_program_version);
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      exit(EXIT_SUCCESS);
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      if(arg[0] == '\0'){
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        break;
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      }
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      /* FALLTHROUGH */
 
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#if __GNUC__ >= 7
 
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      __attribute__((fallthrough));
 
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#else
 
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          /* FALLTHROUGH */
 
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#endif
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    default:
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      return ARGP_ERR_UNKNOWN;
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    }