file_stats.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  * File status query.
  23  *
  24  * Here we implement some commands (SIZE, MDTM) that share the need of calling
  25  * stat() over a given file, no matter the fields looked up.  It's handy to
  26  * merge all of them here so safety checks are not replicated.
  27  */
  28
  29 #include <sys/types.h>
  30 #include <sys/stat.h>
  31 #include <time.h>
  32 #include <stdio.h>
  33
  34
  35 void file_stats (int type)
  36 {
  37         int         err;
  38         struct stat st;
  39         struct tm   t;
  40
  41         if (!path_is_secure(S_arg)) {
  42                 send_reply(S_cmd_sk, "550 Path is insecure.\r\n");
  43                 return;
  44         }
  45
  46         err = stat(expanded_arg(), &st);
  47
  48         if (err == -1) {
  49                 send_reply(S_cmd_sk, "550 Could not stat file.\r\n");
  50                 return;
  51         }
  52
  53         switch (type) {
  54         case 0: /* MDTM */
  55                 gmtime_r(&(st.st_mtime), &t);
  56                 snprintf(AuxBuf, LINE_SIZE,
  57                          "213 %4d%02d%02d%02d%02d%02d\r\n", t.tm_year + 1900,
  58                          t.tm_mon, t.tm_mday, t.tm_hour, t.tm_min, t.tm_sec);
  59                 break;
  60
  61         case 1: /* SIZE */
  62                 snprintf(AuxBuf, LINE_SIZE, "213 %lld\r\n",
  63                          (long long) st.st_size);
  64         }
  65
  66         send_reply(S_cmd_sk, AuxBuf);
  67 }
  68