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6 changes: 4 additions & 2 deletions agent/app/service/firewall_sync.go
Original file line number Diff line number Diff line change
Expand Up @@ -42,8 +42,10 @@ func (s *FirewallService) SyncPortWhitelist(ctx context.Context) error {
if err != nil {
return err
}
_, err = s.syncPortWhitelist(ctx, provider, ports)
return err
if _, err := s.syncPortWhitelist(ctx, provider, ports); err != nil {
return err
}
return s.removeTransferredSystemPortRules(ctx, provider, ports)
}

func (s *FirewallService) PreviewRuleSync(ctx context.Context, clientIP string, request dto.FirewallRuleSyncRequest) (dto.FirewallRuleSyncPreview, error) {
Expand Down
80 changes: 80 additions & 0 deletions agent/app/service/firewall_utils.go
Original file line number Diff line number Diff line change
Expand Up @@ -2365,6 +2365,86 @@ func (s *FirewallService) compileRestorableFirewallRules(ctx context.Context, st
return restorable, preserved, nil
}

func (s *FirewallService) removeTransferredSystemPortRules(ctx context.Context, provider filter.Provider, ports []firewall.PortWhitelist) error {
if provider != filter.ProviderIptables && provider != filter.ProviderNftables {
return nil
}
firewallRuleMutationMu.Lock()
defer firewallRuleMutationMu.Unlock()
required, err := firewall.RequiredPortWhitelist(ports)
if err != nil {
return err
}
runtime, err := s.firewallAdapter(provider)
if err != nil {
return err
}
stored, err := s.rules.List(ctx)
if err != nil {
return err
}
custom := filter.NewPortWhitelistIndex(customWhitelist(ports))
candidates := make([]model.FirewallRule, 0)
keysByUUID := make(map[string][]string)
scopes := make([]filter.Scope, 0)
for _, record := range stored {
if record.Origin != constant.FirewallRuleOriginCreated || !strings.HasPrefix(record.Owner, constant.FirewallRuleSourceSecurity+":"+constant.FirewallSystemAcceptedPortSourcePrefix) {
continue
}
restorable, preserved, err := s.compileRestorableFirewallRules(ctx, record, runtime, required)
if isFirewallPolicyIncompatible(err) {
continue
}
if err != nil {
return err
}
if len(restorable) != 0 || len(preserved) == 0 || slices.ContainsFunc(preserved, func(rule filter.DesiredRule) bool { return custom.Matches(rule.Rule) }) {
continue
}
for _, desired := range preserved {
rule := desired.Rule
rule.Scope.Chain = filter.BasicBeforeChain
key, err := filter.RuleMatchKey(rule)
if err != nil {
return err
}
keysByUUID[record.UUID] = append(keysByUUID[record.UUID], key)
scopes = append(scopes, rule.Scope)
}
candidates = append(candidates, record)
}
present := make(map[string]bool)
for _, group := range firewallScopeReadGroups(scopes) {
snapshots, err := readMutableFirewallRuleScopes(runtime, ctx, group)
if errors.Is(err, filter.ErrFamilyUnavailable) {
continue
}
if err != nil {
return err
}
for _, snapshot := range snapshots {
for _, observed := range snapshot.Rules {
if observed.ParseStatus != filter.ParseStatusSupported || observed.Rule.Action != filter.ActionAccept || (observed.Persistence != "" && observed.Persistence != filter.PersistenceStatusConverged) {
continue
}
key, err := filter.RuleMatchKey(observed.Rule)
if err != nil {
return err
}
present[key] = true
}
}
}
candidates = slices.DeleteFunc(candidates, func(record model.FirewallRule) bool {
return slices.ContainsFunc(keysByUUID[record.UUID], func(key string) bool { return !present[key] })
})
var failures []error
for ruleUUID, err := range s.rules.DeleteBatchWithRevision(ctx, candidates) {
failures = append(failures, fmt.Errorf("remove transferred system port rule %s: %w", ruleUUID, err))
}
return errors.Join(failures...)
}

func firewallInventoryRuleKey(rule filter.FirewallRule) (string, error) {
if rule.Scope.Provider == filter.ProviderFirewalld {
key, err := filter.RuleMatchKey(rule)
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2 changes: 1 addition & 1 deletion agent/utils/firewall/filter/providers/firewalld/adapter.go
Original file line number Diff line number Diff line change
Expand Up @@ -278,7 +278,7 @@ func batchCommands(plan filter.CommandBatch) (filter.RuleCommands, error) {
for index, command := range rule.Commands {
option := command.Args[len(command.Args)-1]
rollback := rule.RollbackCommands[index].Args[len(rule.RollbackCommands[index].Args)-1]
operation := strings.SplitN(strings.TrimPrefix(option, "--"), "-", 2)[0]
operation, _, _ := strings.Cut(option, "=")
if operation != previousOperation || commandBytes+max(len(option), len(rollback))+1 > 64*1024 {
args := []string{"--zone=" + filter.FirewalldInputZone}
if permanent {
Expand Down
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