next_command.c

   1 /*
   2  * User FTP Server,  Share folders over FTP without being root.
   3  * Copyright (C) 2008  Isaac Jurado
   4  *
   5  * This program is free software; you can redistribute it and/or modify it under
   6  * the terms of the GNU General Public License as published by the Free Software
   7  * Foundation; either version 2 of the License, or (at your option) any later
   8  * version.
   9  *
  10  * This program is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  12  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
  13  * details.
  14  *
  15  * You should have received a copy of the GNU General Public License along with
  16  * this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
  18  */
  19 #include "uftps.h"
  20
  21 /*
  22  * Return the next command (as an integer) available in the control channel.
  23  *
  24  * Most of this implementation has been inspired by str_netfd_alloc() from
  25  * netstr.c of VsFTPd.
  26  */
  27
  28 #include "command_parser.h"
  29 #include <sys/types.h>
  30 #include <sys/socket.h>
  31 #include <unistd.h>
  32 #include <stdlib.h>
  33 #include <stdio.h>
  34 #include <ctype.h>
  35
  36
  37 enum command next_command (void)
  38 {
  39         const struct Cmd  *cmd;
  40         int                i;
  41
  42         read_request();
  43
  44         i = 0;
  45         while (SS.input[i] != ' ' && SS.input[i] != '\0')
  46         {
  47                 SS.input[i] = toupper(SS.input[i] & 0x07F);
  48                 i++;
  49         }
  50
  51         SS.arg      = (SS.input[i] == ' ' ? SS.input + i + 1 : NULL);
  52         SS.input[i] = '\0';
  53
  54         cmd = parse_command(SS.input, i);
  55         if (cmd == NULL)
  56                 return FTP_NONE;
  57         return cmd->value;
  58 }
  59