llxfer_vfile.cpp
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- /**
- * @file llxfer_vfile.cpp
- * @brief implementation of LLXfer_VFile class for a single xfer (vfile).
- *
- * $LicenseInfo:firstyear=2002&license=viewergpl$
- *
- * Copyright (c) 2002-2010, Linden Research, Inc.
- *
- * Second Life Viewer Source Code
- * The source code in this file ("Source Code") is provided by Linden Lab
- * to you under the terms of the GNU General Public License, version 2.0
- * ("GPL"), unless you have obtained a separate licensing agreement
- * ("Other License"), formally executed by you and Linden Lab. Terms of
- * the GPL can be found in doc/GPL-license.txt in this distribution, or
- * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
- *
- * There are special exceptions to the terms and conditions of the GPL as
- * it is applied to this Source Code. View the full text of the exception
- * in the file doc/FLOSS-exception.txt in this software distribution, or
- * online at
- * http://secondlifegrid.net/programs/open_source/licensing/flossexception
- *
- * By copying, modifying or distributing this software, you acknowledge
- * that you have read and understood your obligations described above,
- * and agree to abide by those obligations.
- *
- * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
- * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
- * COMPLETENESS OR PERFORMANCE.
- * $/LicenseInfo$
- */
- #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 ()
- {
- cleanup();
- }
- ///////////////////////////////////////////////////////////
- void LLXfer_VFile::init (LLVFS *vfs, const LLUUID &local_id, LLAssetType::EType type)
- {
- mVFS = vfs;
- mLocalID = local_id;
- mType = type;
- mVFile = NULL;
- std::string id_string;
- mLocalID.toString(id_string);
- mName = llformat("VFile %s:%s", id_string.c_str(), LLAssetType::lookup(mType));
- }
-
- ///////////////////////////////////////////////////////////
- void LLXfer_VFile::cleanup ()
- {
- LLVFile file(mVFS, mTempID, mType, LLVFile::WRITE);
- file.remove();
- delete mVFile;
- mVFile = NULL;
- LLXfer::cleanup();
- }
- ///////////////////////////////////////////////////////////
- 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,LLExtStat),
- 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;
- std::string id_string;
- mLocalID.toString(id_string);
- mName = llformat("VFile %s:%s", id_string.c_str(), LLAssetType::lookup(mType));
- 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);
- }
- //////////////////////////////////////////////////////////
- std::string LLXfer_VFile::getFileName()
- {
- 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;
- }