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// **********************************************************************
//
// Copyright (c) 2004 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
#include <IcePatch2/FileServerI.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#ifdef _WIN32
# include <io.h>
#else
# include <unistd.h>
#endif
using namespace std;
using namespace Ice;
using namespace IcePatch2;
IcePatch2::FileServerI::FileServerI(const CommunicatorPtr& communicator,
const std::string& dataDir,
const FileInfoSeq& infoSeq) :
_dataDir(normalize(dataDir)),
_dataDirWithSlash(_dataDir + "/")
{
int sizeMax = communicator->getProperties()->getPropertyAsIntWithDefault("Ice.MessageSizeMax", 1024);
_maxReadSize = communicator->getProperties()->getPropertyAsIntWithDefault("IcePatch2.MaxReadSize", 256);
if(_maxReadSize < 1)
{
_maxReadSize = 1;
}
else if(_maxReadSize > sizeMax)
{
_maxReadSize = sizeMax;
}
if(_maxReadSize == sizeMax)
{
_maxReadSize = _maxReadSize * 1024 - 512; // Leave some headroom for protocol header.
}
else
{
_maxReadSize *= 1024;
}
FileTree0& tree0 = const_cast<FileTree0&>(_tree0);
getFileTree0(infoSeq, tree0);
}
FileInfoSeq
IcePatch2::FileServerI::getFileInfoSeq(Int partition, const Current&) const
{
if(partition < 0 || partition > 255)
{
throw PartitionOutOfRangeException();
}
return _tree0.nodes[partition].files;
}
ByteSeqSeq
IcePatch2::FileServerI::getChecksumSeq(const Current&) const
{
ByteSeqSeq checksums(NumPartitions);
for(int part = 0; part < NumPartitions; ++part)
{
checksums[part] = _tree0.nodes[part].checksum;
}
return checksums;
}
ByteSeq
IcePatch2::FileServerI::getChecksum(const Current&) const
{
return _tree0.checksum;
}
ByteSeq
IcePatch2::FileServerI::getFileCompressed(const string& pa, Int pos, Int num, const Current&) const
{
string path = normalize(pa) + ".bz2";
if(path.compare(0, _dataDirWithSlash.size(), _dataDirWithSlash) != 0)
{
FileAccessException ex;
ex.reason = "`" + pa + "' is not a path in `" + _dataDir + "'";
throw ex;
}
if(num <= 0 || pos < 0)
{
return ByteSeq();
}
if(num > _maxReadSize)
{
num = _maxReadSize;
}
#ifdef _WIN32
int fd = open(path.c_str(), _O_RDONLY | _O_BINARY);
#else
int fd = open(path.c_str(), O_RDONLY);
#endif
if(fd == -1)
{
FileAccessException ex;
ex.reason = "cannot open `" + path + "' for reading: " + strerror(errno);
throw ex;
}
if(lseek(fd, static_cast<off_t>(pos), SEEK_SET) != static_cast<off_t>(pos))
{
close(fd);
ostringstream posStr;
posStr << pos;
FileAccessException ex;
ex.reason = "cannot seek position " + posStr.str() + " in file `" + path + "': " + strerror(errno);
throw ex;
}
ByteSeq bytes(num);
#ifdef _WIN32
long r;
#else
ssize_t r;
#endif
if((r = read(fd, &bytes[0], static_cast<size_t>(num))) == -1)
{
close(fd);
FileAccessException ex;
ex.reason = "cannot read `" + path + "': " + strerror(errno);
throw ex;
}
close(fd);
bytes.resize(r);
return bytes;
}
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