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stricter hostname validation and replace (#2383)

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This commit is contained in:
Kristoffer Dalby
2025-10-22 13:50:39 +02:00
committed by GitHub
parent 2c9e98d3f5
commit 1cdea7ed9b
16 changed files with 888 additions and 193 deletions
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19
hscontrol/state/state.go
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@@ -662,8 +662,7 @@ func (s *State) SetApprovedRoutes(nodeID types.NodeID, routes []netip.Prefix) (t
// RenameNode changes the display name of a node.
func (s *State) RenameNode(nodeID types.NodeID, newName string) (types.NodeView, change.ChangeSet, error) {
// Validate the new name before making any changes
if err := util.CheckForFQDNRules(newName); err != nil {
if err := util.ValidateHostname(newName); err != nil {
return types.NodeView{}, change.EmptySet, fmt.Errorf("renaming node: %w", err)
}
@@ -1112,13 +1111,17 @@ func (s *State) HandleNodeFromAuthPath(
return types.NodeView{}, change.EmptySet, fmt.Errorf("failed to find user: %w", err)
}
// Ensure we have valid hostinfo and hostname from the registration cache entry
validHostinfo, hostname := util.EnsureValidHostinfo(
// Ensure we have a valid hostname from the registration cache entry
hostname := util.EnsureHostname(
regEntry.Node.Hostinfo,
regEntry.Node.MachineKey.String(),
regEntry.Node.NodeKey.String(),
)
// Ensure we have valid hostinfo
validHostinfo := cmp.Or(regEntry.Node.Hostinfo, &tailcfg.Hostinfo{})
validHostinfo.Hostname = hostname
logHostinfoValidation(
regEntry.Node.MachineKey.ShortString(),
regEntry.Node.NodeKey.String(),
@@ -1284,13 +1287,17 @@ func (s *State) HandleNodeFromPreAuthKey(
return types.NodeView{}, change.EmptySet, err
}
// Ensure we have valid hostinfo and hostname - handle nil/empty cases
validHostinfo, hostname := util.EnsureValidHostinfo(
// Ensure we have a valid hostname - handle nil/empty cases
hostname := util.EnsureHostname(
regReq.Hostinfo,
machineKey.String(),
regReq.NodeKey.String(),
)
// Ensure we have valid hostinfo
validHostinfo := cmp.Or(regReq.Hostinfo, &tailcfg.Hostinfo{})
validHostinfo.Hostname = hostname
logHostinfoValidation(
machineKey.ShortString(),
regReq.NodeKey.ShortString(),