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// **********************************************************************
//
// Copyright (c) 2003-2017 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 <IceUtil/DisableWarnings.h>
#include <IceUtil/FileUtil.h>
#include <IceUtil/StringUtil.h>
#include <IceUtil/ScopedArray.h>
#include <IcePatch2/FileServerI.h>
#ifdef _WIN32
# include <io.h>
#else
# include <unistd.h>
#endif
using namespace std;
using namespace Ice;
using namespace IcePatch2;
using namespace IcePatch2Internal;
IcePatch2::FileServerI::FileServerI(const std::string& dataDir, const LargeFileInfoSeq& infoSeq) :
_dataDir(dataDir), _tree0(FileTree0())
{
FileTree0& tree0 = const_cast<FileTree0&>(_tree0);
getFileTree0(infoSeq, tree0);
}
FileInfoSeq
IcePatch2::FileServerI::getFileInfoSeq(Int node0, const Current& c) const
{
LargeFileInfoSeq largeFiles = getLargeFileInfoSeq(node0, c);
FileInfoSeq files;
files.resize(largeFiles.size());
transform(largeFiles.begin(), largeFiles.end(), files.begin(), toFileInfo);
return files;
}
LargeFileInfoSeq
IcePatch2::FileServerI::getLargeFileInfoSeq(Int node0, const Current&) const
{
if(node0 < 0 || node0 > 255)
{
throw PartitionOutOfRangeException();
}
return _tree0.nodes[node0].files;
}
ByteSeqSeq
IcePatch2::FileServerI::getChecksumSeq(const Current&) const
{
ByteSeqSeq checksums(256);
for(int node0 = 0; node0 < 256; ++node0)
{
checksums[node0] = _tree0.nodes[node0].checksum;
}
return checksums;
}
ByteSeq
IcePatch2::FileServerI::getChecksum(const Current&) const
{
return _tree0.checksum;
}
void
IcePatch2::FileServerI::getFileCompressed_async(const AMD_FileServer_getFileCompressedPtr& cb,
const string& pa, Int pos, Int num, const Current&) const
{
try
{
vector<Byte> buffer;
getFileCompressedInternal(pa, pos, num, buffer, false);
if(buffer.empty())
{
cb->ice_response(make_pair<const Byte*, const Byte*>(0, 0));
}
else
{
cb->ice_response(make_pair<const Byte*, const Byte*>(&buffer[0], &buffer[0] + buffer.size()));
}
}
catch(const std::exception& ex)
{
cb->ice_exception(ex);
}
}
void
IcePatch2::FileServerI::getLargeFileCompressed_async(const AMD_FileServer_getLargeFileCompressedPtr& cb,
const string& pa, Long pos, Int num, const Current&) const
{
try
{
vector<Byte> buffer;
getFileCompressedInternal(pa, pos, num, buffer, true);
if(buffer.empty())
{
cb->ice_response(make_pair<const Byte*, const Byte*>(0, 0));
}
else
{
cb->ice_response(make_pair<const Byte*, const Byte*>(&buffer[0], &buffer[0] + buffer.size()));
}
}
catch(const std::exception& ex)
{
cb->ice_exception(ex);
}
}
void
IcePatch2::FileServerI::getFileCompressedInternal(const std::string& pa, Ice::Long pos, Ice::Int num,
vector<Byte>& buffer, bool largeFile) const
{
if(IceUtilInternal::isAbsolutePath(pa))
{
throw FileAccessException(string("illegal absolute path `") + pa + "'");
}
string path = simplify(pa);
if(path == ".." ||
path.find("/../") != string::npos ||
(path.size() >= 3 && (path.substr(0, 3) == "../" || path.substr(path.size() - 3, 3) == "/..")))
{
throw FileAccessException(string("illegal `..' component in path `") + path + "'");
}
if(num <= 0 || pos < 0)
{
return;
}
string absolutePath = _dataDir + '/' + path + ".bz2";
int fd = IceUtilInternal::open(absolutePath, O_RDONLY|O_BINARY);
if(fd == -1)
{
throw FileAccessException(string("cannot open `") + path + "' for reading: " + strerror(errno));
}
if(!largeFile)
{
IceUtilInternal::structstat buf;
if(IceUtilInternal::stat(absolutePath, &buf) == -1)
{
throw FileAccessException(string("cannot stat `") + path + "':\n" + IceUtilInternal::lastErrorToString());
}
if(buf.st_size > 0x7FFFFFFF)
{
ostringstream os;
os << "cannot encode size `" << buf.st_size << "' for file `" << path << "' as Ice::Int" << endl;
throw FileAccessException(os.str());
}
}
if(
#if defined(_MSC_VER)
_lseek(fd, static_cast<off_t>(pos), SEEK_SET)
#else
lseek(fd, static_cast<off_t>(pos), SEEK_SET)
#endif
!= static_cast<off_t>(pos))
{
IceUtilInternal::close(fd);
ostringstream posStr;
posStr << pos;
throw FileAccessException("cannot seek position " + posStr.str() + " in file `" + path + "': " +
strerror(errno));
}
buffer.resize(num);
#ifdef _WIN32
int r;
if((r = _read(fd, &buffer[0], static_cast<unsigned int>(num))) == -1)
#else
ssize_t r;
if((r = read(fd, &buffer[0], static_cast<size_t>(num))) == -1)
#endif
{
IceUtilInternal::close(fd);
throw FileAccessException("cannot read `" + path + "': " + strerror(errno));
}
IceUtilInternal::close(fd);
}
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