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[Installer][Client] Fix review findings: stale backup, empty reuse, relocate, portable warning

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NSIS: wipe TEMP backup once per run to avoid resurrecting deleted files,
check data dir existence in relocate so dir-only trees are moved.

Client: never reuse a recent session for an empty source set, only fall
back to a covering session on copy failure, warn fresh portable installs
instead of staying silent.
This commit is contained in:
Lukas Brübach 2026-10-13 11:12:11 +02:00
parent 53e8421885
commit 3bde484244
2 changed files with 32 additions and 14 deletions
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18
cmake/NSIS.template.in
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@ -383,13 +383,15 @@ Function BackupUserDataBeforeUninstall
${If} $OldInstallDir == ""
StrCpy $OldInstallDir $INSTDIR
${EndIf}
; No wipe of $TEMP\CockatriceDataBackup here: %TEMP% survives across installer
; runs, so the previous run's safety copy stays on disk until this run overwrites
; it. Stale content can never leak into this run because restore is gated on the
; per-run $DataBackupDone / $LooseDecksBackupDone flags below, not on what happens
; to be on disk. CopyFiles merges/overwrites, so calling this twice in sequence
; (32-bit then 64-bit uninstall) can only add safety, never delete the first
; call's copy.
; %TEMP% survives across installer runs, so a previous run's safety copy would
; otherwise merge into this run: CopyFiles merges/overwrites, resurrecting files
; the user deleted since (e.g. deck A from run 1 reappearing alongside deck B
; from run 2) or restoring stale content after a failed copy. Wipe once per
; installer run - $DataBackupDir is empty until the first backup of this run,
; so the second call in sequence (32-bit then 64-bit uninstall) still merges.
${If} $DataBackupDir == ""
RMDir /r "$TEMP\CockatriceDataBackup"
${EndIf}
${If} ${FileExists} "$OldInstallDir\portable.dat"
${AndIf} ${FileExists} "$OldInstallDir\data"
StrCpy $DataBackupDir "$TEMP\CockatriceDataBackup"
@ -485,7 +487,7 @@ StrCmp $DataBackupDir "" done
StrCmp $OldInstallDir "" done
StrCmp $OldInstallDir $INSTDIR done
${If} $DataBackupDone == "1"
${AndIf} ${FileExists} "$OldInstallDir\data\*.*"
${AndIf} ${FileExists} "$OldInstallDir\data"
!insertmacro CockLog "relocate: copying restored data $OldInstallDir\data -> $INSTDIR\data"
CreateDirectory "$INSTDIR\data"
CopyFiles /SILENT "$OldInstallDir\data\*.*" "$INSTDIR\data\"