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Sourcecode: postgresql-8.4 version File versions

dropuser.c

/*-------------------------------------------------------------------------
 *
 * dropuser
 *
 * Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * $PostgreSQL$
 *
 *-------------------------------------------------------------------------
 */

#include "postgres_fe.h"
#include "common.h"
#include "dumputils.h"


static void help(const char *progname);


int
main(int argc, char *argv[])
{
      static struct option long_options[] = {
            {"host", required_argument, NULL, 'h'},
            {"port", required_argument, NULL, 'p'},
            {"username", required_argument, NULL, 'U'},
            {"no-password", no_argument, NULL, 'w'},
            {"password", no_argument, NULL, 'W'},
            {"echo", no_argument, NULL, 'e'},
            {"interactive", no_argument, NULL, 'i'},
            {NULL, 0, NULL, 0}
      };

      const char *progname;
      int               optindex;
      int               c;

      char     *dropuser = NULL;
      char     *host = NULL;
      char     *port = NULL;
      char     *username = NULL;
      enum trivalue prompt_password = TRI_DEFAULT;
      bool        echo = false;
      bool        interactive = false;

      PQExpBufferData sql;

      PGconn         *conn;
      PGresult   *result;

      progname = get_progname(argv[0]);
      set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pgscripts"));

      handle_help_version_opts(argc, argv, "dropuser", help);

      while ((c = getopt_long(argc, argv, "h:p:U:wWei", long_options, &optindex)) != -1)
      {
            switch (c)
            {
                  case 'h':
                        host = optarg;
                        break;
                  case 'p':
                        port = optarg;
                        break;
                  case 'U':
                        username = optarg;
                        break;
                  case 'w':
                        prompt_password = TRI_NO;
                        break;
                  case 'W':
                        prompt_password = TRI_YES;
                        break;
                  case 'e':
                        echo = true;
                        break;
                  case 'i':
                        interactive = true;
                        break;
                  default:
                        fprintf(stderr, _("Try \"%s --help\" for more information.\n"), progname);
                        exit(1);
            }
      }

      switch (argc - optind)
      {
            case 0:
                  break;
            case 1:
                  dropuser = argv[optind];
                  break;
            default:
                  fprintf(stderr, _("%s: too many command-line arguments (first is \"%s\")\n"),
                              progname, argv[optind + 1]);
                  fprintf(stderr, _("Try \"%s --help\" for more information.\n"), progname);
                  exit(1);
      }

      if (dropuser == NULL)
            dropuser = simple_prompt("Enter name of role to drop: ", 128, true);

      if (interactive)
      {
            printf(_("Role \"%s\" will be permanently removed.\n"), dropuser);
            if (!yesno_prompt("Are you sure?"))
                  exit(0);
      }

      initPQExpBuffer(&sql);
      appendPQExpBuffer(&sql, "DROP ROLE %s;\n", fmtId(dropuser));

      conn = connectDatabase("postgres", host, port, username, prompt_password, progname);

      if (echo)
            printf("%s", sql.data);
      result = PQexec(conn, sql.data);

      if (PQresultStatus(result) != PGRES_COMMAND_OK)
      {
            fprintf(stderr, _("%s: removal of role \"%s\" failed: %s"),
                        progname, dropuser, PQerrorMessage(conn));
            PQfinish(conn);
            exit(1);
      }

      PQclear(result);
      PQfinish(conn);
      exit(0);
}


static void
help(const char *progname)
{
      printf(_("%s removes a PostgreSQL role.\n\n"), progname);
      printf(_("Usage:\n"));
      printf(_("  %s [OPTION]... [ROLENAME]\n"), progname);
      printf(_("\nOptions:\n"));
      printf(_("  -e, --echo                show the commands being sent to the server\n"));
      printf(_("  -i, --interactive         prompt before deleting anything\n"));
      printf(_("  --help                    show this help, then exit\n"));
      printf(_("  --version                 output version information, then exit\n"));
      printf(_("\nConnection options:\n"));
      printf(_("  -h, --host=HOSTNAME       database server host or socket directory\n"));
      printf(_("  -p, --port=PORT           database server port\n"));
      printf(_("  -U, --username=USERNAME   user name to connect as (not the one to drop)\n"));
      printf(_("  -w, --no-password         never prompt for password\n"));
      printf(_("  -W, --password            force password prompt\n"));
      printf(_("\nReport bugs to <pgsql-bugs@postgresql.org>.\n"));
}

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