libbase/GnashFileUtilities.cpp

   1 // GnashFileUtilities.cpp     File handling for Gnash
   2 //
   3 //   Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
   4 //   Free Software Foundation, Inc
   5 //
   6 // This program is free software; you can redistribute it and/or modify
   7 // it under the terms of the GNU General Public License as published by
   8 // the Free Software Foundation; either version 3 of the License, or
   9 // (at your option) any later version.
  10 //
  11 // This program is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15 //
  16 // You should have received a copy of the GNU General Public License
  17 // along with this program; if not, write to the Free Software
  18 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19
  20 #ifndef GNASH_FILE_HEADERS_H
  21 #define GNASH_FILE_HEADERS_H
  22
  23 #include "GnashFileUtilities.h"
  24
  25 #include <string>
  26 #include <boost/tokenizer.hpp>
  27 #include <cerrno>
  28
  29 namespace gnash {
  30
  31 /// Create a directory for a given filename.
  32 //
  33 /// Everything after the last '/' is assumed to be the filename.
  34 bool
  35 mkdirRecursive(const std::string& filename)
  36 {
  37     // Not a directory, nothing to do.
  38     std::string::size_type pos = filename.rfind("/");
  39     if (pos == std::string::npos) {
  40         return true;
  41     }
  42     const std::string& target = filename.substr(0, pos);
  43
  44     typedef boost::tokenizer<boost::char_separator<char> > Tok;
  45     boost::char_separator<char> sep("/");
  46     Tok t(target, sep);
  47     std::string newdir;
  48     // Start from the root if the given filename was given
  49     // with an absolute path
  50     if ( filename[0] == '/' ) newdir += "/";
  51
  52     for (Tok::iterator tit = t.begin(); tit != t.end(); ++tit) {
  53
  54         newdir += *tit;
  55
  56         if (newdir.find("..") != std::string::npos) {
  57             return false;
  58         }
  59
  60         int ret = mkdirUserPermissions(newdir);
  61
  62         if ((errno != EEXIST) && (ret != 0)) {
  63             return false;
  64         }
  65         newdir.push_back('/');
  66     }
  67     return true;
  68 }
  69
  70 } // namespace gnash
  71
  72 #endif