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Only copy the parts that have actually data to the requesting client for VTOC and friends. Fixes kickOff 98 (thanks ripsaw).

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@3795
This commit is contained in:
Peter Veenstra 2012-08-23 04:28:34 +00:00
parent ad12df4c25
commit 361df4799c
1 changed files with 21 additions and 6 deletions
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27
src/dos/dos_mscdex.cpp
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@ -616,8 +616,13 @@ bool CMscdex::GetCopyrightName(Bit16u drive, PhysPt data) {
PhysPt ptoc = GetTempBuffer();
success = ReadVTOC(drive,0x00,ptoc,error);
if (success) {
MEM_BlockCopy(data,ptoc+702,37);
mem_writeb(data+37,0);
Bitu len;
for (len=0;len<37;len++) {
Bit8u c=mem_readb(ptoc+702+len);
if (c==0 || c==0x20) break;
}
MEM_BlockCopy(data,ptoc+702,len);
mem_writeb(data+len,0);
};
return success;
}
@ -628,8 +633,13 @@ bool CMscdex::GetAbstractName(Bit16u drive, PhysPt data) {
PhysPt ptoc = GetTempBuffer();
success = ReadVTOC(drive,0x00,ptoc,error);
if (success) {
MEM_BlockCopy(data,ptoc+739,37);
mem_writeb(data+37,0);
Bitu len;
for (len=0;len<37;len++) {
Bit8u c=mem_readb(ptoc+739+len);
if (c==0 || c==0x20) break;
}
MEM_BlockCopy(data,ptoc+739,len);
mem_writeb(data+len,0);
};
return success;
}
@ -640,8 +650,13 @@ bool CMscdex::GetDocumentationName(Bit16u drive, PhysPt data) {
PhysPt ptoc = GetTempBuffer();
success = ReadVTOC(drive,0x00,ptoc,error);
if (success) {
MEM_BlockCopy(data,ptoc+776,37);
mem_writeb(data+37,0);
Bitu len;
for (len=0;len<37;len++) {
Bit8u c=mem_readb(ptoc+776+len);
if (c==0 || c==0x20) break;
}
MEM_BlockCopy(data,ptoc+776,len);
mem_writeb(data+len,0);
};
return success;
}