BOOL C4UpdatePackage::Optimize(C4Group *pGroup, const char *strTarget) {
// Open target group
C4GroupEx TargetGrp;
if (!TargetGrp.Open(strTarget)) return FALSE;
// Both groups must be packed
if (!pGroup->IsPacked() || !TargetGrp.IsPacked()) {
TargetGrp.Close(FALSE);
return FALSE;
}
// update children
char ItemFileName[_MAX_PATH];
pGroup->ResetSearch();
while (pGroup->FindNextEntry("*", ItemFileName))
if (!SEqual(ItemFileName, C4CFN_UpdateCore) &&
!SEqual(ItemFileName, C4CFN_UpdateEntries))
Optimize(pGroup, &TargetGrp, ItemFileName);
// set header
if (TargetGrp.HeadIdentical(*pGroup, true)) TargetGrp.SetHead(*pGroup);
// save
TargetGrp.Close(FALSE);
// okay
return TRUE;
}
BOOL C4UpdatePackage::Execute(C4Group *pGroup) {
// search target
C4GroupEx TargetGrp;
char strTarget[_MAX_PATH];
SCopy(DestPath, strTarget, _MAX_PATH);
char *p = strTarget, *lp = strTarget;
while (p = strchr(p + 1, '\\')) {
*p = 0;
if (!*(p + 1)) break;
if (!SEqual(lp, ".."))
if (TargetGrp.Open(strTarget)) {
// packed?
bool fPacked = TargetGrp.IsPacked();
// maker check (someone might try to unpack directories w/o asking user)
if (fPacked)
if (!SEqual(TargetGrp.GetMaker(), pGroup->GetMaker())) return FALSE;
// Close Group
TargetGrp.Close(TRUE);
if (fPacked)
// Unpack
C4Group_UnpackDirectory(strTarget);
} else {
// GrpUpdate -> file must exist
if (GrpUpdate) return FALSE;
// create dir
CreateDirectory(strTarget, NULL);
}
*p = '\\';
lp = p + 1;
}
// try to open it
if (!TargetGrp.Open(strTarget, !GrpUpdate)) return FALSE;
// check if the update is allowed
if (GrpUpdate) {
// maker must match
/*if(!SEqual(TargetGrp.GetMaker(), pGroup->GetMaker())) - now allowing
updates from different makers
return FALSE;*/
// check checksum
uint32_t iCRC32;
if (!C4Group_GetFileCRC(TargetGrp.GetFullName().getData(), &iCRC32))
return FALSE;
int i = 0;
for (; i < UpGrpCnt; i++)
if (iCRC32 == GrpChks1[i]) break;
if (i >= UpGrpCnt) return FALSE;
} else {
// only allow Extra.c4g-Updates
if (!SEqual2(DestPath, "Extra.c4g")) return FALSE;
}
// update children
char ItemFileName[_MAX_PATH];
pGroup->ResetSearch();
while (pGroup->FindNextEntry("*", ItemFileName))
if (!SEqual(ItemFileName, C4CFN_UpdateCore) &&
!SEqual(ItemFileName, C4CFN_UpdateEntries))
DoUpdate(pGroup, &TargetGrp, ItemFileName);
// do GrpUpdate
if (GrpUpdate) DoGrpUpdate(pGroup, &TargetGrp);
// close the group
TargetGrp.Close(FALSE);
if (GrpUpdate) {
// check the result
uint32_t iResChks;
if (!C4Group_GetFileCRC(strTarget, &iResChks)) return FALSE;
if (iResChks != GrpChks2) {
#ifdef UPDATE_DEBUG
char *pData;
int iSize;
CStdFile MyFile;
MyFile.Load(strTarget, (BYTE **)&pData, &iSize, 0, TRUE);
MyFile.Create("DiesesDingIstMist.txt", FALSE);
MyFile.Write(pData, iSize, FALSE);
MyFile.Close();
#endif
return FALSE;
}
}
return TRUE;
}
