/*
-Minetest-c55
-Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>
-Copyright (C) 2012 Jonathan Neuschäfer <j.neuschaefer@gmx.net>
+Minetest
+Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
+Copyright (C) 2013 Jonathan Neuschäfer <j.neuschaefer@gmx.net>
This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+GNU Lesser General Public License for more details.
-You should have received a copy of the GNU General Public License along
+You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "filecache.h"
+
#include "clientserver.h"
#include "log.h"
#include "filesys.h"
-#include "utility.h"
#include "hex.h"
-
+#include "sha1.h"
#include <string>
#include <iostream>
+#include <fstream>
+#include <sstream>
+#include <stdlib.h>
bool FileCache::loadByPath(const std::string &path, std::ostream &os)
{
if(!fis.good()){
verbosestream<<"FileCache: File not found in cache: "
- <<path<<std::endl;
+ <<path<<std::endl;
return false;
}
}
if(bad){
errorstream<<"FileCache: Failed to read file from cache: \""
- <<path<<"\""<<std::endl;
+ <<path<<"\""<<std::endl;
}
return !bad;
if(!file.good())
{
errorstream<<"FileCache: Can't write to file at "
- <<path<<std::endl;
+ <<path<<std::endl;
return false;
}
return !file.fail();
}
-bool FileCache::loadByName(const std::string &name, std::ostream &os)
-{
- std::string path = m_dir + DIR_DELIM + name;
- return loadByPath(path, os);
-}
-
-
-bool FileCache::updateByName(const std::string &name, const std::string &data)
+bool FileCache::update(const std::string &name, const std::string &data)
{
std::string path = m_dir + DIR_DELIM + name;
return updateByPath(path, data);
}
-
-std::string FileCache::getPathFromChecksum(const std::string &checksum)
+bool FileCache::update_sha1(const std::string &data)
{
- std::string checksum_hex = hex_encode(checksum.c_str(), checksum.length());
- return m_dir + DIR_DELIM + checksum_hex;
+ SHA1 sha1;
+ sha1.addBytes(data.c_str(), data.size());
+ unsigned char *digest = sha1.getDigest();
+ std::string sha1_raw((char*)digest, 20);
+ free(digest);
+ std::string sha1_hex = hex_encode(sha1_raw);
+ return update(sha1_hex, data);
}
-
-bool FileCache::loadByChecksum(const std::string &checksum, std::ostream &os)
+bool FileCache::load(const std::string &name, std::ostream &os)
{
- std::string path = getPathFromChecksum(checksum);
+ std::string path = m_dir + DIR_DELIM + name;
return loadByPath(path, os);
}
-
-bool FileCache::updateByChecksum(const std::string &checksum,
- const std::string &data)
+bool FileCache::load_sha1(const std::string &sha1_raw, std::ostream &os)
{
- std::string path = getPathFromChecksum(checksum);
- return updateByPath(path, data);
+ std::ostringstream tmp_os(std::ios_base::binary);
+ if(!load(hex_encode(sha1_raw), tmp_os))
+ return false;
+ SHA1 sha1;
+ sha1.addBytes(tmp_os.str().c_str(), tmp_os.str().length());
+ unsigned char *digest = sha1.getDigest();
+ std::string sha1_real_raw((char*)digest, 20);
+ free(digest);
+ if(sha1_real_raw != sha1_raw){
+ verbosestream<<"FileCache["<<m_dir<<"]: filename "<<sha1_real_raw
+ <<" mismatches actual checksum"<<std::endl;
+ return false;
+ }
+ os<<tmp_os.str();
+ return true;
}