lib/misc/maildir.cc
author "Tomas Zeman <tzeman@volny.cz>"
Sun, 20 Jan 2008 00:22:09 +0100
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// Copyright (C) 1999,2000 Bruce Guenter <bruceg@em.ca>
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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#include <config.h>
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#include "maildir.h"
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#include <unistd.h>
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#include <string.h>
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#include "ac/dirent.h"
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#include "stat_fns.h"
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#include "mystring/mystring.h"
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static inline int rmdir(const mystring& n)
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{
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  return rmdir(n.c_str());
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}
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int mkdirp(const mystring& dirname, mode_t mode)
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{
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  if(is_dir(dirname.c_str()))
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    return 0;
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  int i = dirname.find_last('/');
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  if(i > 0) {
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    if(mkdirp(dirname.left(i), 0755))
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      return -1;
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  }
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  if(i != dirname.length() - 1)
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    return mkdir(dirname.c_str(), mode);
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  return 0;
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}
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bool make_maildir(const mystring& dirname)
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{
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  if(mkdirp(dirname, 0700))
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    return false;
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  mystring curdir = dirname + "/cur";
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  if(mkdir(curdir.c_str(), 0755)) {
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    rmdir(dirname);
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    return false;
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  }
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  mystring newdir = dirname + "/new";
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  if(mkdir(newdir.c_str(), 0755)) {
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    rmdir(curdir);
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    rmdir(dirname);
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    return false;
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  }
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  mystring tmpdir = dirname + "/tmp";
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  if(mkdir(tmpdir.c_str(), 0755)) {
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    rmdir(newdir);
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    rmdir(curdir);
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    rmdir(dirname);
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    return false;
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  }
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  return true;
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}
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bool delete_directory(const mystring& dirname)
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{
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  int retry;
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  retry = 0;
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  do {
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    DIR* dir = opendir(dirname.c_str());
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    if(!dir)
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      return false;
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    while(dirent* entry = readdir(dir)) {
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      const char* name = entry->d_name;
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      if(name[0] == '.' &&
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	 (NAMLEN(entry) == 1 ||
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	  (name[1] == '.' && NAMLEN(entry) == 2)))
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	continue;
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      mystring fullname = dirname + "/";
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      fullname += mystring(name, NAMLEN(entry));
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      if(is_dir(fullname.c_str())) {
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	if(!delete_directory(fullname)) {
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	  closedir(dir);
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	  return false;
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	}
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      }
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      else if(unlink(fullname.c_str())) {
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	closedir(dir);
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	return false;
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      }
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    }
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    closedir(dir);
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    if (rmdir(dirname) == 0)
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      return true;
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    ++retry;
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  } while (retry < 3);
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  return false;
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}