RcStatus SemCopyDataUntilEOF( WResFileOffset offset, WResFileID handle,
void *buff, int buffsize, int *err_code )
/****************************************************************/
{
bool error;
WResFileSSize numread;
if( RCSEEK( handle, offset, SEEK_SET ) == -1 ) {
*err_code = errno;
return( RS_READ_ERROR );
}
numread = RCREAD( handle, buff, buffsize );
while( numread != 0 ) {
if( RCIOERR( handle, numread ) ) {
*err_code = errno;
return( RS_READ_ERROR );
}
error = ResWrite( buff, numread, CurrResFile.handle );
if( error ) {
*err_code = LastWresErr();
return( RS_WRITE_ERROR );
}
numread = RCREAD( handle, buff, buffsize );
}
return( RS_OK );
}
extern uint_32 ComputeSegmentSize( WResFileID handle, SegTable * segs, int shift_count )
{
segment_record * currseg;
segment_record * afterlast;
uint_32 length;
WResFileSSize numread;
uint_16 num_relocs;
length = 0;
for( currseg = segs->Segments, afterlast = segs->Segments + segs->NumSegs;
currseg < afterlast; currseg++ ) {
length += currseg->size;
if( currseg->info & SEG_RELOC ) {
if( RCSEEK( handle, (((long)currseg->address) << (long)shift_count) + currseg->size, SEEK_SET ) == -1 )
return( 0 );
numread = RCREAD( handle, &num_relocs, sizeof(uint_16) );
if( numread != sizeof(uint_16) )
return( 0 );
length += (unsigned_32)num_relocs * (unsigned_32)OS_RELOC_ITEM_SIZE;
}
}
return( length );
} /* ComputeSegmentSize */
static RcStatus readDBRanges( WResFileID handle )
{
WResFileSSize numread;
numread = RCREAD( handle, &charInfo.begchars, 256 );
if( numread != 256 ) {
return( RCIOERR( handle, numread ) ? RS_READ_ERROR : RS_READ_INCMPLT );
}
return( RS_OK );
}
/*
* ReadBitmapInfoHeader-
* NB when an error occurs this func must return without altering errno
*/
static RcStatus ReadBitmapInfoHeader( BitmapInfoHeader * head, WResFileID handle )
/********************************************************************************/
{
WResFileSSize numread;
numread = RCREAD( handle, head, sizeof(BitmapInfoHeader) );
if( numread == sizeof( BitmapInfoHeader ) )
return( RS_OK );
return( RCIOERR( handle, numread ) ? RS_READ_ERROR : RS_READ_INCMPLT );
}
static RcStatus readFontInfo( WResFileID handle, FontInfo *info, int *err_code )
/******************************************************************************/
{
WResFileSSize numread;
numread = RCREAD( handle, info, sizeof( FontInfo ) );
if( numread != sizeof( FontInfo ) ) {
*err_code = errno;
return( RCIOERR( handle, numread ) ? RS_READ_ERROR : RS_READ_INCMPLT );
}
return( RS_OK );
}
/*
* CopyData -
*/
RcStatus CopyData( uint_32 offset, uint_32 length, WResFileID handle,
void *buff, int buffsize, int *err_code )
/***************************************************************************/
{
bool error;
WResFileSSize numread;
if( RCSEEK( handle, offset, SEEK_SET ) == -1 ) {
*err_code = errno;
return( RS_READ_ERROR );
}
while( length > buffsize ) {
numread = RCREAD( handle, buff, buffsize );
if( numread != buffsize ) {
*err_code = errno;
return( RCIOERR( handle, numread ) ? RS_READ_ERROR : RS_READ_INCMPLT );
}
length -= buffsize;
error = ResWrite( buff, buffsize, CurrResFile.handle );
if( error ) {
*err_code = LastWresErr();
return( RS_WRITE_ERROR );
}
}
numread = RCREAD( handle, buff, length );
if( numread != length ) {
*err_code = errno;
return( RCIOERR( handle, numread ) ? RS_READ_ERROR : RS_READ_INCMPLT );
}
error = ResWrite( buff, length, CurrResFile.handle );
if( error ) {
*err_code = errno;
return( RS_WRITE_ERROR );
}
return( RS_OK );
} /* CopyData */
static RcStatus readDBTable( WResFileID handle )
{
WResFileSSize numread;
int size;
size = charInfo.header.num_entries * sizeof( uint_16 );
charInfo.entries = RCALLOC( size );
numread = RCREAD( handle, charInfo.entries, size );
if( numread != size ) {
return( RCIOERR( handle, numread ) ? RS_READ_ERROR : RS_READ_INCMPLT );
}
return( RS_OK );
}
static RcStatus readDBIndex( WResFileID handle )
{
WResFileSSize numread;
int size;
size = charInfo.header.num_indices * sizeof( DBIndexEntry );
charInfo.index = RCALLOC( size );
numread = RCREAD( handle, charInfo.index, size );
if( numread != size ) {
return( RCIOERR( handle, numread ) ? RS_READ_ERROR : RS_READ_INCMPLT );
}
return( RS_OK );
}
static RcStatus readBitmapFileHeader( WResFileID handle, BitmapFileHeader *head,
int *err_code )
/******************************************************************************/
{
WResFileSSize numread;
numread = RCREAD( handle, head, sizeof(BitmapFileHeader) );
if( numread != sizeof( BitmapFileHeader ) ) {
*err_code = errno;
return( RCIOERR( handle, numread ) ? RS_READ_ERROR : RS_READ_INCMPLT );
}
return( RS_OK );
}
static RcStatus readCurFileDirEntry( CurFileDirEntry * entry, WResFileID handle,
int *err_code )
/******************************************************************************/
{
WResFileSSize numread;
numread = RCREAD( handle, entry, sizeof(CurFileDirEntry) );
if( numread != sizeof(CurFileDirEntry ) ) {
*err_code = errno;
return( RCIOERR( handle, numread ) ? RS_READ_ERROR : RS_READ_INCMPLT );
}
return( RS_OK );
} /* readCurFileDirEntry */
static RcStatus readIcoCurFileDirHeader( IconCurDirHeader * head,
WResFileID handle, int *err_code )
/********************************************************************/
{
WResFileSSize numread;
numread = RCREAD( handle, head, sizeof(IconCurDirHeader) );
if( numread != sizeof( IconCurDirHeader ) ) {
*err_code = errno;
return( RCIOERR( handle, numread ) ? RS_READ_ERROR : RS_READ_INCMPLT );
}
return( RS_OK );
} /* readIcoCurFileDirHeader */
/*
* readSegTable
* NB when an error occurs this function must return without altering errno
*/
static RcStatus readSegTable( WResFileID handle, uint_32 offset, SegTable * seg )
{
int tablesize;
WResFileSSize numread;
tablesize = seg->NumSegs * sizeof(segment_record);
if( RCSEEK( handle, offset, SEEK_SET ) == -1 )
return( RS_READ_ERROR );
numread = RCREAD( handle, seg->Segments, tablesize );
if( numread != tablesize ) {
return( RCIOERR( handle, numread ) ? RS_READ_ERROR : RS_READ_INCMPLT );
}
return( RS_OK );
} /* readSegTable */
static RcStatus readDBHeader( WResFileID handle )
{
WResFileSSize numread;
numread = RCREAD( handle, &charInfo.header, sizeof( DBTableHeader ) );
if( numread != sizeof( DBTableHeader ) ) {
return( RCIOERR( handle, numread ) ? RS_READ_ERROR : RS_READ_INCMPLT );
}
if( charInfo.header.sig[0] != DB_TABLE_SIG_1 ||
charInfo.header.sig[1] != DB_TABLE_SIG_2 ) {
return( RS_BAD_FILE_FMT );
}
if( charInfo.header.ver != DB_TABLE_VER ) {
return( RS_WRONG_VER );
}
return( RS_OK );
}
bool DumpString( uint_32 offset, uint_32 length, WResFileID handle )
/******************************************************************/
{
WResFileOffset prevpos;
unsigned len;
unsigned numread;
unsigned cursor;
unsigned stringlen;
char *stringbuff;
prevpos = RCSEEK( handle, offset, SEEK_SET );
if( prevpos == -1 )
return( true );
len = DMP_STR_BUF_LEN;
stringbuff = (char *)RCALLOC( len );
if( stringbuff == NULL )
return( true );
printf( "\t\t Strings:\n" );
printf( "\t\t --------" );
numread = 0;
stringlen = 0;
cursor = 0;
do {
if( numread == 0 ) {
if( length > len ) {
length -= len;
} else {
len = length;
length = 0;
}
numread = RCREAD( handle, stringbuff, len );
cursor = 0;
}
if( stringlen == 0 ) {
stringlen = (unsigned char)stringbuff[cursor++];
if( stringlen != 0 ) {
printf( "\n\t\t " );
}
++stringlen; // trailing '\0'
}
if( cursor < numread ) {
for( ; stringlen > 0; --stringlen ) {
if( cursor >= numread )
break;
if( stringbuff[cursor] != '\0' && stringbuff[cursor] != '\n' ) {
putchar( stringbuff[cursor] );
}
cursor++;
}
} else {
numread = 0;
}
} while( length != 0 || numread > 0 );
putchar( '\n' );
RCFREE( stringbuff );
RCSEEK( handle, prevpos, SEEK_SET );
return( false );
}
static CpSegRc copyOneSegment( const segment_record * inseg,
segment_record * outseg, ExeFileInfo *inexe, ExeFileInfo *outexe,
int old_shift_count, int new_shift_count, bool pad_end )
{
CpSegRc ret;
bool error;
WResFileSSize numread;
uint_16 numrelocs;
long out_offset;
long align_amount;
uint_32 seg_len = 0L;
char zero;
zero = 0;
error = false;
ret = CPSEG_OK;
/* check if this is a segment that has no image in the exe file */
if( inseg->address != 0 ) {
/* align in the out file so that shift_count will be valid */
out_offset = RCTELL( outexe->Handle );
if( out_offset == -1 ) {
error = true;
RcError( ERR_WRITTING_FILE, outexe->name, strerror( errno ) );
}
if( !error ) {
align_amount = AlignAmount( out_offset, new_shift_count );
if( RCSEEK( outexe->Handle, align_amount, SEEK_CUR ) == -1 ) {
error = true;
RcError( ERR_WRITTING_FILE, outexe->name, strerror( errno ) );
}
out_offset += align_amount;
}
/* move in the in file to the start of the segment */
if( !error ) {
/* convert the address to a long before shifting it */
if( RCSEEK( inexe->Handle, (long)inseg->address << old_shift_count, SEEK_SET ) == -1 ) {
error = true;
RcError( ERR_READING_EXE, inexe->name, strerror( errno ) );
}
}
if( !error ) {
if( inseg->size == 0 ) {
seg_len = 0x10000L;
} else {
seg_len = inseg->size;
}
error = myCopyExeData( inexe, outexe, seg_len );
}
if( (inseg->info & SEG_RELOC) && !error ) {
/* read the number of relocation items */
numread = RCREAD( inexe->Handle, &numrelocs, sizeof(uint_16) );
if( numread != sizeof( uint_16 ) ) {
error = true;
if( RCIOERR( inexe->Handle, numread ) ) {
RcError( ERR_READING_EXE, inexe->name, strerror( errno ) );
} else {
RcError( ERR_UNEXPECTED_EOF, inexe->name );
}
} else {
if( RCWRITE( outexe->Handle, &numrelocs, sizeof(uint_16) ) != sizeof( uint_16 ) ) {
error = true;
RcError( ERR_WRITTING_FILE, outexe->name, strerror( errno ) );
}
}
/* copy the relocation information */
if( !error ) {
error = myCopyExeData( inexe, outexe, numrelocs * OS_RELOC_ITEM_SIZE );
}
if( numrelocs * OS_RELOC_ITEM_SIZE + seg_len > 0x10000L ) {
ret = CPSEG_SEG_TOO_BIG;
}
}
if( pad_end && ret != CPSEG_SEG_TOO_BIG && !error ) {
align_amount = AlignAmount( RCTELL( outexe->Handle ), new_shift_count );
/* make sure there is room for the memory arena header */
if( align_amount < 16 ) {
align_amount += 16;
}
if( RCSEEK( outexe->Handle, align_amount - 1, SEEK_CUR ) == -1 ) {
error = true;
RcError( ERR_WRITTING_FILE, outexe->name );
} else {
/* write something out so if we have just seeked past the
* end of the file the file's size will be adjusted
* appropriately */
if( RCWRITE( outexe->Handle, &zero, 1 ) != 1 ) {
error = true;
RcError( ERR_WRITTING_FILE, outexe->name );
}
}
}
} else {
out_offset = 0;
}
/* copy the segment record to outseg */
if( !error ) {
outseg->size = inseg->size;
outseg->info = inseg->info;
outseg->min = inseg->min;
outseg->address = out_offset >> new_shift_count;
}
