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Fail fast when no console session exists and keep the SAS value type

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This commit is contained in:
Viktor Liu
2026-08-06 10:40:16 +02:00
parent 4984e8efef
commit 78bc6560b8
2 changed files with 24 additions and 3 deletions
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client/vnc/server/server_windows.go
+7 -1
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@@ -112,8 +112,14 @@ func enableSoftwareSAS() {
defer sasStateMu.Unlock()
if !savedSASState.captured {
prev, _, err := key.GetIntegerValue("SoftwareSASGeneration")
prev, valType, err := key.GetIntegerValue("SoftwareSASGeneration")
switch {
case err == nil && valType != registry.DWORD:
// Restoring writes a DWORD, so anything else would come back with a
// different type than the administrator set, even when the number
// itself fits.
log.Warnf("SoftwareSASGeneration has registry type %d rather than DWORD, leaving it alone", valType)
return
case err == nil && prev > math.MaxUint32:
// A DWORD is what the policy takes, so a wider value is not ours to
// narrow and restore.