mirror of
https://github.com/nillerusr/source-engine.git
synced 2024-12-22 14:16:50 +00:00
371 lines
9.9 KiB
C++
371 lines
9.9 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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#include "crccheck_shared.h"
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#include "tier1/checksum_crc.h"
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#include <string.h>
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#include <stdio.h>
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#include <stdarg.h>
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#ifdef _WIN32
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#include <process.h>
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#else
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#include <stdlib.h>
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#define stricmp strcasecmp
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#endif
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#pragma warning( disable : 4996 )
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#pragma warning( disable : 4127 )
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#define MAX_INCLUDE_STACK_DEPTH 10
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#ifdef POSIX
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#define _vsnprintf vsnprintf
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#endif
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//-----------------------------------------------------------------------------
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// Sys_Error
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//
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//-----------------------------------------------------------------------------
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void Sys_Error( const char* format, ... )
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{
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va_list argptr;
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va_start( argptr,format );
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vfprintf( stderr, format, argptr );
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va_end( argptr );
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exit( 1 );
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}
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void SafeSnprintf( char *pOut, int nOutLen, const char *pFormat, ... )
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{
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va_list marker;
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va_start( marker, pFormat );
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_vsnprintf( pOut, nOutLen, pFormat, marker );
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va_end( marker );
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pOut[nOutLen-1] = 0;
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}
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// for linked lists of strings
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struct StringNode_t
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{
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StringNode_t *m_pNext;
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char m_Text[1]; // the string data
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};
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static StringNode_t *MakeStrNode( char const *pStr )
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{
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size_t nLen = strlen( pStr );
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StringNode_t *nRet = ( StringNode_t * ) new unsigned char[sizeof( StringNode_t ) + nLen ];
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strcpy( nRet->m_Text, pStr );
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return nRet;
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}
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//-----------------------------------------------------------------------------
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// Sys_LoadFile
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//-----------------------------------------------------------------------------
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int Sys_LoadTextFileWithIncludes( const char* filename, char** bufferptr )
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{
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FILE *pFileStack[MAX_INCLUDE_STACK_DEPTH];
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int nSP = MAX_INCLUDE_STACK_DEPTH;
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StringNode_t *pFileLines = NULL; // tail ptr for fast adds
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size_t nTotalFileBytes = 0;
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FILE *handle = fopen( filename, "r" );
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if ( !handle )
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return -1;
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pFileStack[--nSP] = handle; // push
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while ( nSP < MAX_INCLUDE_STACK_DEPTH )
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{
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// read lines
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for (;;)
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{
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char lineBuffer[2048];
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char *ln = fgets( lineBuffer, sizeof( lineBuffer ), pFileStack[nSP] );
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if ( !ln )
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break; // out of text
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ln += strspn( ln, "\t " ); // skip white space
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if ( memcmp( ln, "#include", 8 ) == 0 )
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{
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// omg, an include
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ln += 8;
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ln += strspn( ln, " \t\"<" ); // skip whitespace, ", and <
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size_t nPathNameLength = strcspn( ln, " \t\">\n" );
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if ( !nPathNameLength )
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{
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Sys_Error( "bad include %s via %s\n", lineBuffer, filename );
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}
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ln[nPathNameLength] = 0; // kill everything after end of filename
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FILE *inchandle = fopen( ln, "r" );
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if ( !inchandle )
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{
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Sys_Error( "can't open #include of %s\n", ln );
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}
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if ( !nSP )
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{
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Sys_Error( "include nesting too deep via %s", filename );
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}
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pFileStack[--nSP] = inchandle;
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}
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else
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{
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size_t nLen = strlen( ln );
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nTotalFileBytes += nLen;
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StringNode_t *pNewLine = MakeStrNode( ln );
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pNewLine->m_pNext = pFileLines;
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pFileLines = pNewLine;
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}
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}
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fclose( pFileStack[nSP] );
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nSP++; // pop stack
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}
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// Reverse the pFileLines list so it goes the right way.
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StringNode_t *pPrev = NULL;
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StringNode_t *pCur;
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for( pCur = pFileLines; pCur; )
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{
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StringNode_t *pNext = pCur->m_pNext;
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pCur->m_pNext = pPrev;
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pPrev = pCur;
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pCur = pNext;
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}
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pFileLines = pPrev;
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// Now dump all the lines out into a single buffer.
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char *buffer = new char[nTotalFileBytes + 1]; // and null
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*bufferptr = buffer; // tell caller
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// copy all strings and null terminate
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int nLine = 0;
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StringNode_t *pNext;
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for( pCur=pFileLines; pCur; pCur=pNext )
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{
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pNext = pCur->m_pNext;
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size_t nLen = strlen( pCur->m_Text );
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memcpy( buffer, pCur->m_Text, nLen );
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buffer += nLen;
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nLine++;
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// Cleanup the line..
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//delete [] (unsigned char*)pCur;
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}
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*( buffer++ ) = 0; // null
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return (int)nTotalFileBytes;
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}
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// Just like fgets() but it removes trailing newlines.
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char* ChompLineFromFile( char *pOut, int nOutBytes, FILE *fp )
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{
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char *pReturn = fgets( pOut, nOutBytes, fp );
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if ( pReturn )
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{
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int len = (int)strlen( pReturn );
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if ( len > 0 && pReturn[len-1] == '\n' )
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{
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pReturn[len-1] = 0;
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if ( len > 1 && pReturn[len-2] == '\r' )
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pReturn[len-2] = 0;
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}
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}
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return pReturn;
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}
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bool CheckSupplementalString( const char *pSupplementalString, const char *pReferenceSupplementalString )
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{
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// The supplemental string is only checked while VPC is determining if a project file is stale or not.
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// It's not used by the pre-build event's CRC check.
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// The supplemental string contains various options that tell how the project was built. It's generated in VPC_GenerateCRCOptionString.
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//
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// If there's no reference supplemental string (which is the case if we're running vpccrccheck.exe), then we ignore it and continue.
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if ( !pReferenceSupplementalString )
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return true;
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return ( pSupplementalString && pReferenceSupplementalString && stricmp( pSupplementalString, pReferenceSupplementalString ) == 0 );
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}
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bool VPC_CheckProjectDependencyCRCs( const char *pProjectFilename, const char *pReferenceSupplementalString, char *pErrorString, int nErrorStringLength )
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{
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// Build the xxxxx.vcproj.vpc_crc filename
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char szFilename[512];
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SafeSnprintf( szFilename, sizeof( szFilename ), "%s.%s", pProjectFilename, VPCCRCCHECK_FILE_EXTENSION );
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// Open it up.
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FILE *fp = fopen( szFilename, "rt" );
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if ( !fp )
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{
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SafeSnprintf( pErrorString, nErrorStringLength, "Unable to load %s to check CRC strings", szFilename );
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return false;
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}
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bool bReturnValue = false;
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char lineBuffer[2048];
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// Check the version of the CRC file.
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const char *pVersionString = ChompLineFromFile( lineBuffer, sizeof( lineBuffer ), fp );
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if ( pVersionString && stricmp( pVersionString, VPCCRCCHECK_FILE_VERSION_STRING ) == 0 )
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{
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// Check the supplemental CRC string.
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const char *pSupplementalString = ChompLineFromFile( lineBuffer, sizeof( lineBuffer ), fp );
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if ( CheckSupplementalString( pSupplementalString, pReferenceSupplementalString ) )
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{
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// Now read each line. Each line has a CRC and a filename on it.
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while ( 1 )
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{
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char *pLine = ChompLineFromFile( lineBuffer, sizeof( lineBuffer ), fp );
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if ( !pLine )
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{
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// We got all the way through the file without a CRC error, so all's well.
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bReturnValue = true;
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break;
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}
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char *pSpace = strchr( pLine, ' ' );
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if ( !pSpace )
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{
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SafeSnprintf( pErrorString, nErrorStringLength, "Invalid line ('%s') in %s", pLine, szFilename );
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break;
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}
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// Null-terminate it so we have the CRC by itself and the filename follows the space.
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*pSpace = 0;
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const char *pVPCFilename = pSpace + 1;
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// Parse the CRC out.
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unsigned int nReferenceCRC;
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sscanf( pLine, "%x", &nReferenceCRC );
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// Calculate the CRC from the contents of the file.
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char *pBuffer;
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int nTotalFileBytes = Sys_LoadTextFileWithIncludes( pVPCFilename, &pBuffer );
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if ( nTotalFileBytes == -1 )
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{
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SafeSnprintf( pErrorString, nErrorStringLength, "Unable to load %s for CRC comparison.", pVPCFilename );
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break;
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}
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CRC32_t nCRCFromTextContents = CRC32_ProcessSingleBuffer( pBuffer, nTotalFileBytes );
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delete [] pBuffer;
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// Compare them.
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if ( nCRCFromTextContents != nReferenceCRC )
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{
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SafeSnprintf( pErrorString, nErrorStringLength, "This VCPROJ is out of sync with its VPC scripts.\n %s mismatches (0x%x vs 0x%x).\n Please use VPC to re-generate!\n \n", pVPCFilename, nReferenceCRC, nCRCFromTextContents );
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break;
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}
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}
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}
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else
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{
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SafeSnprintf( pErrorString, nErrorStringLength, "Supplemental string mismatch." );
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}
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}
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else
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{
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SafeSnprintf( pErrorString, nErrorStringLength, "CRC file %s has an invalid version string ('%s')", szFilename, pVersionString ? pVersionString : "[null]" );
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}
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fclose( fp );
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return bReturnValue;
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}
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int VPC_OldeStyleCRCChecks( int argc, char **argv )
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{
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for ( int i=1; (i+2) < argc; )
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{
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const char *pTestArg = argv[i];
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if ( stricmp( pTestArg, "-crc" ) != 0 )
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{
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++i;
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continue;
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}
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const char *pVPCFilename = argv[i+1];
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// Get the CRC value on the command line.
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const char *pTestCRC = argv[i+2];
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unsigned int nCRCFromCommandLine;
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sscanf( pTestCRC, "%x", &nCRCFromCommandLine );
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// Calculate the CRC from the contents of the file.
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char *pBuffer;
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int nTotalFileBytes = Sys_LoadTextFileWithIncludes( pVPCFilename, &pBuffer );
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if ( nTotalFileBytes == -1 )
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{
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Sys_Error( "Unable to load %s for CRC comparison.", pVPCFilename );
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}
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CRC32_t nCRCFromTextContents = CRC32_ProcessSingleBuffer( pBuffer, nTotalFileBytes );
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delete [] pBuffer;
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// Compare them.
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if ( nCRCFromTextContents != nCRCFromCommandLine )
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{
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Sys_Error( " \n This VCPROJ is out of sync with its VPC scripts.\n %s mismatches (0x%x vs 0x%x).\n Please use VPC to re-generate!\n \n", pVPCFilename, nCRCFromCommandLine, nCRCFromTextContents );
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}
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i += 2;
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}
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return 0;
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}
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int VPC_CommandLineCRCChecks( int argc, char **argv )
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{
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if ( argc < 2 )
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{
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fprintf( stderr, "Invalid arguments to " VPCCRCCHECK_EXE_FILENAME ". Format: " VPCCRCCHECK_EXE_FILENAME " [project filename]\n" );
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return 1;
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}
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const char *pFirstCRC = argv[1];
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// If the first argument starts with -crc but is not -crc2, then this is an old CRC check command line with all the CRCs and filenames
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// directly on the command line. The new format puts all that in a separate file.
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if ( pFirstCRC[0] == '-' && pFirstCRC[1] == 'c' && pFirstCRC[2] == 'r' && pFirstCRC[3] == 'c' && pFirstCRC[4] != '2' )
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{
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return VPC_OldeStyleCRCChecks( argc, argv );
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}
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if ( stricmp( pFirstCRC, "-crc2" ) != 0 )
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{
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fprintf( stderr, "Missing -crc2 parameter on vpc CRC check command line." );
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return 1;
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}
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const char *pProjectFilename = argv[2];
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char errorString[1024];
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bool bCRCsValid = VPC_CheckProjectDependencyCRCs( pProjectFilename, NULL, errorString, sizeof( errorString ) );
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if ( bCRCsValid )
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{
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return 0;
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}
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else
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{
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fprintf( stderr, "%s", errorString );
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return 1;
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}
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}
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