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los-deserialize.c
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los-deserialize.c
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/**************************************************************************************\
* A part of the Apple Lisa 2 Emulator Project *
* *
* Copyright (C) 2018 Ray A. Arachelian *
* All Rights Reserved *
* *
* Deserialize Lisa Tools and Disk Label *
* *
\**************************************************************************************/
#include <libdc42.h>
void deserialize(DC42ImageType *F)
{
uint8 *mddftag=dc42_read_sector_tags(F,28);
uint8 *mddfsec=dc42_read_sector_data(F,28);
// Remove Lisa signature on previously used Serialized Master Disks //////////////////////////////////////////////
if (mddftag[4]==0 && mddftag[5]==1 && // MDDF Signature
mddfsec[0x0d]=='O' &&
mddfsec[0x0e]=='f' &&
mddfsec[0x0f]=='f' &&
mddfsec[0x10]=='i' &&
mddfsec[0x11]=='c' &&
mddfsec[0x12]=='e' &&
mddfsec[0x13]==' ' &&
mddfsec[0x14]=='S' &&
mddfsec[0x15]=='y' &&
mddfsec[0x16]=='s' &&
mddfsec[0x17]=='t' &&
mddfsec[0x18]=='e' &&
mddfsec[0x19]=='m' )
{
uint32 disk_sn=(mddfsec[0xcc]<<24) | (mddfsec[0xcd]<<16) | (mddfsec[0xce]<<8) | (mddfsec[0xcf]);
if (disk_sn)
{
uint8 buf[512];
memcpy(buf,mddfsec,512);
buf[0xcc]=buf[0xcd]=buf[0xce]=buf[0xcf]=0;
dc42_write_sector_data(F,28,buf);
printf("Disk MDDF signed by Lisa SN: %08x (%d) zeroed out.",disk_sn,disk_sn);
}
}
uint8 *ftag;
uint8 *fsec;
for (int sec=32; (unsigned)sec<F->numblocks; sec++)
{
char name[64];
ftag=dc42_read_sector_tags(F,sec);
if (ftag[4]==0xff) // tool entry tags have tag 4 as ff
{
fsec=dc42_read_sector_data(F,sec);
int s=fsec[0]; // size of string (pascal string)
// possible file name, very likely to be the right size.
// Look for {T*}obj. i.e. {T5}obj is LisaList, but could have {T9999}obj but very unlikely
// also check the friendly tool name size at offset 0x182.
// T{12345678}OBJ
// 123456789012345
if (s>6 && s<32 && fsec[1]=='{' && fsec[2]=='T' && fsec[3]>='0' && fsec[3]<='9' &&
fsec[s-3]=='}' && tolower(fsec[s-2])=='o' && tolower(fsec[s-1])=='b' && tolower(fsec[s])=='j' && fsec[0x182]<64 )
{
s=fsec[0x182]; // Size of tool name
memcpy(name,&fsec[0x183],s); // copy it over.
name[s]=0; // string terminator.
uint32 toolsn=(fsec[0x42]<<24) | (fsec[0x43]<<16) | (fsec[0x44]<<8) | fsec[0x45];
if ( toolsn != 0 || (fsec[0x48] | fsec[0x49] ) )
{
fprintf(stderr,
"Deserialized/debozo-ized Office System tool %s serialized for Lisa #%02x%02x%02x%02x bozo bits:%02x%02x\n",
name,
fsec[0x42], fsec[0x43], fsec[0x44], fsec[0x45], fsec[0x48], fsec[0x49]);
uint8 buf[512];
memcpy(buf,fsec,512);
buf[0x42]=buf[0x43]=buf[0x44]=buf[0x45]=buf[0x48]=buf[0x49]=0;
dc42_write_sector_data(F,sec,buf);
}
else fprintf(stderr,"Tool %s is not serialized and bozo flags are not turned on\n",name);
}
}
}
}
int main(int argc, char *argv[])
{
int i,j;
DC42ImageType F;
char creatortype[10];
puts(" ---------------------------------------------------------------------------");
puts(" Lisa Tool Deserializer v0.02 http://lisaem.sunder.net");
puts(" ---------------------------------------------------------------------------");
puts(" Copyright (C) 2018, Ray A. Arachelian, All Rights Reserved.");
puts(" Released under the GNU Public License, Version 2.0");
puts(" There is absolutely no warranty for this program. Use at your own risk. ");
puts(" ---------------------------------------------------------------------------\n");
if (argc<=1)
{
puts("");
puts(" This program is used to deserialize and de-bozoize Lisa Office System disk images");
puts(" that contain serialized tools (LOS Applications)");
puts("");
puts(" Usage: losdeserialize {filename1} {filename2} ... {filename N}");
puts(" i.e. ./losdeserialize SomeImage.dc42 SomeOtherImage.dc42");
exit(0);
}
for (i=1; i<argc; i++)
{
int ret=0;
printf("\nDeserializing: %-50s ",argv[i]);
ret=dc42_auto_open(&F, argv[i], "wb");
if (!ret) deserialize(&F);
else fprintf(stderr,"Could not open image %s because %s\n",argv[i],F.errormsg);
dc42_close_image(&F);
}
return 0;
}