mirror of
https://github.com/nillerusr/source-engine.git
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233 lines
7.3 KiB
C
233 lines
7.3 KiB
C
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//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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//=============================================================================
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#ifndef FILETRACKER_H
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#define FILETRACKER_H
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#ifdef _WIN32
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#pragma once
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#endif
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class CBaseFileSystem;
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class CPackedStoreFileHandle;
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#if !defined( DEDICATED )
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// Comments from Fletcher:
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//
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// TF isn’t sending any hashes to the server. (That’s probably what CSGO is doing,
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// but not TF.) Comparing hashes doesn’t work when there are optional updates. (We
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// release a new client without updating the server.) Also on TF, we don’t ship
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// any textures or audio to the dedicated server.
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//
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// On TF, the client just confirms that the files were loaded from a trusted source.
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//
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// When a client connects to a “pure” server, the client is supposed to limit
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// which modified files are allowed.)
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#include "ifilelist.h"
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#include "tier1/utldict.h"
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#include "tier0/tslist.h"
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#include "tier1/stringpool.h"
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struct TrackedFile_t
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{
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TrackedFile_t()
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{
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m_nFileFraction = 0;
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m_PackFileID = 0;
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m_nPackFileNumber = 0;
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m_bPackOrVPKFile = false;
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m_bFileInVPK = false;
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m_iLoadedSearchPathStoreId = 0;
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m_bIgnoredForPureServer = false;
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}
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FileHash_t m_filehashFinal;
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const char *m_filename;
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const char *m_path;
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int m_nFileFraction;
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int m_iLoadedSearchPathStoreId; // ID of the search path that we loaded from. Zero if we are not currently loaded.
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int m_PackFileID;
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int m_nPackFileNumber;
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bool m_bPackOrVPKFile;
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bool m_bFileInVPK;
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bool m_bIgnoredForPureServer; // Did we ignore a file by this name as a result of pure server rules, the last time it was opened?
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// The crcIdentifier is a CRC32 of the filename and path. It could be used for quick comparisons of
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// path+filename, but since we don't do that at the moment we don't need this.
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// CRC32_t m_crcIdentifier;
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void RebuildFileName( CStringPool &stringPool, const char *pFilename, const char *pPathID, int nFileFraction );
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static bool Less( const TrackedFile_t& lhs, const TrackedFile_t& rhs )
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{
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int nCmp = Q_strcmp( lhs.m_path, rhs.m_path );
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if ( nCmp < 0 )
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return true;
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else if ( nCmp > 0 )
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return false;
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nCmp = Q_strcmp( lhs.m_filename, rhs.m_filename );
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if ( nCmp < 0 )
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return true;
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return false;
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}
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};
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struct TrackedVPKFile_t
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{
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TrackedVPKFile_t()
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{
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m_PackFileID = 0;
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m_nPackFileNumber = 0;
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m_nFileFraction = 0;
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}
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int m_PackFileID;
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int m_nPackFileNumber;
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int m_nFileFraction;
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int m_idxAllOpenedFiles; // Index into m_treeAllOpenedFiles
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static bool Less( const TrackedVPKFile_t& lhs, const TrackedVPKFile_t& rhs )
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{
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if ( lhs.m_nPackFileNumber < rhs.m_nPackFileNumber )
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return true;
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else if ( lhs.m_nPackFileNumber > rhs.m_nPackFileNumber )
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return false;
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if ( lhs.m_nFileFraction < rhs.m_nFileFraction )
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return true;
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else if ( lhs.m_nFileFraction > rhs.m_nFileFraction )
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return false;
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if ( lhs.m_PackFileID < rhs.m_PackFileID )
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return true;
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return false;
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}
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};
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class StuffToMD5_t
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{
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public:
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uint8 *m_pubBuffer;
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int m_cubBuffer;
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MD5Value_t m_md5Value;
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int m_idxTrackedVPKFile;
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int m_idxListSubmittedJobs;
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};
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class SubmittedMd5Job_t
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{
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public:
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bool m_bFinished;
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MD5Value_t m_md5Value;
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};
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class CFileTracker2
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#ifdef SUPPORT_PACKED_STORE
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: IThreadedFileMD5Processor
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#endif
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{
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public:
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CFileTracker2( CBaseFileSystem *pFileSystem );
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~CFileTracker2();
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void ShutdownAsync();
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void MarkAllCRCsUnverified();
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int GetUnverifiedFileHashes( CUnverifiedFileHash *pFiles, int nMaxFiles );
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EFileCRCStatus CheckCachedFileHash( const char *pPathID, const char *pRelativeFilename, int nFileFraction, FileHash_t *pFileHash );
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#ifdef SUPPORT_PACKED_STORE
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unsigned ThreadedProcessMD5Requests();
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virtual int SubmitThreadedMD5Request( uint8 *pubBuffer, int cubBuffer, int PackFileID, int nPackFileNumber, int nPackFileFraction );
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virtual bool BlockUntilMD5RequestComplete( int iRequest, MD5Value_t *pMd5ValueOut );
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virtual bool IsMD5RequestComplete( int iRequest, MD5Value_t *pMd5ValueOut );
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int NotePackFileOpened( const char *pVPKAbsPath, const char *pPathID, int64 nLength );
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void NotePackFileAccess( const char *pFilename, const char *pPathID, int iSearchPathStoreId, CPackedStoreFileHandle &VPKHandle );
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void AddFileHashForVPKFile( int nPackFileNumber, int nFileFraction, int cbFileLen, MD5Value_t &md5, CPackedStoreFileHandle &fhandle );
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#endif
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void NoteFileIgnoredForPureServer( const char *pFilename, const char *pPathID, int iSearchPathStoreId );
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void NoteFileLoadedFromDisk( const char *pFilename, const char *pPathID, int iSearchPathStoreId, FILE *fp, int64 nLength );
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void NoteFileUnloaded( const char *pFilename, const char *pPathID );
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int ListOpenedFiles( bool bAllOpened, const char *pchFilenameFind );
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IFileList *GetFilesToUnloadForWhitelistChange( IPureServerWhitelist *pNewWhiteList );
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private:
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int IdxFileFromName( const char *pFilename, const char *pPathID, int nFileFraction, bool bPackOrVPKFile );
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CStringPool m_stringPool;
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CUtlRBTree< TrackedFile_t, int > m_treeAllOpenedFiles;
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CUtlRBTree< TrackedVPKFile_t, int > m_treeTrackedVPKFiles;
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CBaseFileSystem *m_pFileSystem;
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CThreadMutex m_Mutex; // Threads call into here, so we need to be safe.
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#ifdef SUPPORT_PACKED_STORE
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CThreadEvent m_threadEventWorkToDo;
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CThreadEvent m_threadEventWorkCompleted;
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volatile bool m_bThreadShouldRun;
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ThreadHandle_t m_hWorkThread;
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CTSQueue< StuffToMD5_t > m_PendingJobs;
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CTSQueue< StuffToMD5_t > m_CompletedJobs;
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CUtlLinkedList< SubmittedMd5Job_t > m_SubmittedJobs;
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#endif // SUPPORT_PACKED_STORE
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// Stats
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int m_cThreadBlocks;
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int m_cDupMD5s;
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};
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#else
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//
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// Dedicated server NULL filetracker. Pretty much does nothing.
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//
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class CFileTracker2
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#ifdef SUPPORT_PACKED_STORE
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: IThreadedFileMD5Processor
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#endif
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{
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public:
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CFileTracker2( CBaseFileSystem *pFileSystem ) {}
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~CFileTracker2() {}
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void ShutdownAsync() {}
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void MarkAllCRCsUnverified() {}
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int GetUnverifiedFileHashes( CUnverifiedFileHash *pFiles, int nMaxFiles ) { return 0; }
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EFileCRCStatus CheckCachedFileHash( const char *pPathID, const char *pRelativeFilename, int nFileFraction, FileHash_t *pFileHash )
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{ return k_eFileCRCStatus_CantOpenFile; }
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#ifdef SUPPORT_PACKED_STORE
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virtual int SubmitThreadedMD5Request( uint8 *pubBuffer, int cubBuffer, int PackFileID, int nPackFileNumber, int nPackFileFraction )
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{ return 0; }
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virtual bool BlockUntilMD5RequestComplete( int iRequest, MD5Value_t *pMd5ValueOut ) { Assert(0); return true; }
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virtual bool IsMD5RequestComplete( int iRequest, MD5Value_t *pMd5ValueOut ) { Assert(0); return true; }
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int NotePackFileOpened( const char *pVPKAbsPath, const char *pPathID, int64 nLength ) { return 0; }
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void NotePackFileAccess( const char *pFilename, const char *pPathID, int iSearchPathStoreId, CPackedStoreFileHandle &VPKHandle ) {}
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void AddFileHashForVPKFile( int nPackFileNumber, int nFileFraction, int cbFileLen, MD5Value_t &md5, CPackedStoreFileHandle &fhandle ) {}
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#endif
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void NoteFileIgnoredForPureServer( const char *pFilename, const char *pPathID, int iSearchPathStoreId ) {}
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void NoteFileLoadedFromDisk( const char *pFilename, const char *pPathID, int iSearchPathStoreId, FILE *fp, int64 nLength ) {}
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void NoteFileUnloaded( const char *pFilename, const char *pPathID ) {}
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IFileList *GetFilesToUnloadForWhitelistChange( IPureServerWhitelist *pNewWhiteList ) { return NULL; }
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};
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#endif // DEDICATED
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#endif // FILETRACKER_H
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