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/**
* @file llxfer_vfile.cpp
* @brief implementation of LLXfer_VFile class for a single xfer (vfile).
*
* Copyright (c) 2002-$CurrentYear$, Linden Research, Inc.
* $License$
*/
#include "linden_common.h"
#include "llxfer_vfile.h"
#include "lluuid.h"
#include "llerror.h"
#include "llmath.h"
#include "llvfile.h"
#include "llvfs.h"
#include "lldir.h"
// size of chunks read from/written to disk
const U32 LL_MAX_XFER_FILE_BUFFER = 65536;
///////////////////////////////////////////////////////////
LLXfer_VFile::LLXfer_VFile ()
: LLXfer(-1)
{
init(NULL, LLUUID::null, LLAssetType::AT_NONE);
}
LLXfer_VFile::LLXfer_VFile (LLVFS *vfs, const LLUUID &local_id, LLAssetType::EType type)
: LLXfer(-1)
{
init(vfs, local_id, type);
}
///////////////////////////////////////////////////////////
LLXfer_VFile::~LLXfer_VFile ()
{
free();
}
///////////////////////////////////////////////////////////
void LLXfer_VFile::init (LLVFS *vfs, const LLUUID &local_id, LLAssetType::EType type)
{
mVFS = vfs;
mLocalID = local_id;
mType = type;
mVFile = NULL;
char id_string[UUID_STR_LENGTH]; /* Flawfinder : ignore */
mLocalID.toString(id_string);
snprintf(mName, sizeof(mName), "VFile %s:%s", id_string, LLAssetType::lookup(mType)); /* Flawfinder : ignore */
}
///////////////////////////////////////////////////////////
void LLXfer_VFile::free ()
{
LLVFile file(mVFS, mTempID, mType, LLVFile::WRITE);
file.remove();
delete mVFile;
mVFile = NULL;
LLXfer::free();
}
///////////////////////////////////////////////////////////
S32 LLXfer_VFile::initializeRequest(U64 xfer_id,
LLVFS* vfs,
const LLUUID& local_id,
const LLUUID& remote_id,
LLAssetType::EType type,
const LLHost& remote_host,
void (*callback)(void**,S32),
void** user_data)
{
S32 retval = 0; // presume success
mRemoteHost = remote_host;
mVFS = vfs;
mLocalID = local_id;
mRemoteID = remote_id;
mType = type;
mID = xfer_id;
mCallback = callback;
mCallbackDataHandle = user_data;
mCallbackResult = LL_ERR_NOERR;
char id_string[UUID_STR_LENGTH]; /* Flawfinder : ignore */
mLocalID.toString(id_string);
snprintf(mName, sizeof(mName), "VFile %s:%s", id_string, LLAssetType::lookup(mType)); /* Flawfinder : ignore */
llinfos << "Requesting " << mName << llendl;
if (mBuffer)
{
delete[] mBuffer;
mBuffer = NULL;
}
mBuffer = new char[LL_MAX_XFER_FILE_BUFFER];
mBufferLength = 0;
mPacketNum = 0;
mTempID.generate();
mStatus = e_LL_XFER_PENDING;
return retval;
}
//////////////////////////////////////////////////////////
S32 LLXfer_VFile::startDownload()
{
S32 retval = 0; // presume success
LLVFile file(mVFS, mTempID, mType, LLVFile::APPEND);
gMessageSystem->newMessageFast(_PREHASH_RequestXfer);
gMessageSystem->nextBlockFast(_PREHASH_XferID);
gMessageSystem->addU64Fast(_PREHASH_ID, mID);
gMessageSystem->addStringFast(_PREHASH_Filename, "");
gMessageSystem->addU8("FilePath", (U8) LL_PATH_NONE);
gMessageSystem->addBOOL("DeleteOnCompletion", FALSE);
gMessageSystem->addBOOL("UseBigPackets", BOOL(mChunkSize == LL_XFER_LARGE_PAYLOAD));
gMessageSystem->addUUIDFast(_PREHASH_VFileID, mRemoteID);
gMessageSystem->addS16Fast(_PREHASH_VFileType, (S16)mType);
gMessageSystem->sendReliable(mRemoteHost);
mStatus = e_LL_XFER_IN_PROGRESS;
return (retval);
}
///////////////////////////////////////////////////////////
S32 LLXfer_VFile::startSend (U64 xfer_id, const LLHost &remote_host)
{
S32 retval = LL_ERR_NOERR; // presume success
mRemoteHost = remote_host;
mID = xfer_id;
mPacketNum = -1;
// cout << "Sending file: " << mLocalFilename << endl;
delete [] mBuffer;
mBuffer = new char[LL_MAX_XFER_FILE_BUFFER];
mBufferLength = 0;
mBufferStartOffset = 0;
delete mVFile;
mVFile = NULL;
if(mVFS->getExists(mLocalID, mType))
{
mVFile = new LLVFile(mVFS, mLocalID, mType, LLVFile::READ);
if (mVFile->getSize() <= 0)
{
delete mVFile;
mVFile = NULL;
return LL_ERR_FILE_EMPTY;
}
}
if(mVFile)
{
setXferSize(mVFile->getSize());
mStatus = e_LL_XFER_PENDING;
}
else
{
retval = LL_ERR_FILE_NOT_FOUND;
}
return (retval);
}
///////////////////////////////////////////////////////////
void LLXfer_VFile::setXferSize (S32 xfer_size)
{
LLXfer::setXferSize(xfer_size);
// Don't do this on the server side, where we have a persistent mVFile
// It would be nice if LLXFers could tell which end of the pipe they were
if (! mVFile)
{
LLVFile file(mVFS, mTempID, mType, LLVFile::APPEND);
file.setMaxSize(xfer_size);
}
}
///////////////////////////////////////////////////////////
S32 LLXfer_VFile::getMaxBufferSize ()
{
return(LL_MAX_XFER_FILE_BUFFER);
}
///////////////////////////////////////////////////////////
S32 LLXfer_VFile::suck(S32 start_position)
{
S32 retval = 0;
if (mVFile)
{
// grab a buffer from the right place in the file
if (! mVFile->seek(start_position, 0))
{
llwarns << "VFile Xfer Can't seek to position " << start_position << ", file length " << mVFile->getSize() << llendl;
llwarns << "While sending file " << mLocalID << llendl;
return -1;
}
if (mVFile->read((U8*)mBuffer, LL_MAX_XFER_FILE_BUFFER)) /* Flawfinder : ignore */
{
mBufferLength = mVFile->getLastBytesRead();
mBufferStartOffset = start_position;
mBufferContainsEOF = mVFile->eof();
}
else
{
retval = -1;
}
}
else
{
retval = -1;
}
return (retval);
}
///////////////////////////////////////////////////////////
S32 LLXfer_VFile::flush()
{
S32 retval = 0;
if (mBufferLength)
{
LLVFile file(mVFS, mTempID, mType, LLVFile::APPEND);
file.write((U8*)mBuffer, mBufferLength);
mBufferLength = 0;
}
return (retval);
}
///////////////////////////////////////////////////////////
S32 LLXfer_VFile::processEOF()
{
S32 retval = 0;
mStatus = e_LL_XFER_COMPLETE;
flush();
if (!mCallbackResult)
{
LLVFile file(mVFS, mTempID, mType, LLVFile::WRITE);
if (! file.rename(mLocalID, mType))
{
llinfos << "copy from temp file failed: unable to rename to " << mLocalID << llendl;
}
}
if (mVFile)
{
delete mVFile;
mVFile = NULL;
}
retval = LLXfer::processEOF();
return(retval);
}
////////////////////////////////////////////////////////////
BOOL LLXfer_VFile::matchesLocalFile(const LLUUID &id, LLAssetType::EType type)
{
return (id == mLocalID && type == mType);
}
//////////////////////////////////////////////////////////
BOOL LLXfer_VFile::matchesRemoteFile(const LLUUID &id, LLAssetType::EType type)
{
return (id == mRemoteID && type == mType);
}
//////////////////////////////////////////////////////////
const char * LLXfer_VFile::getName()
{
return mName;
}
//////////////////////////////////////////////////////////
// hacky - doesn't matter what this is
// as long as it's different from the other classes
U32 LLXfer_VFile::getXferTypeTag()
{
return LLXfer::XFER_VFILE;
}
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