util

func CreateAllowedNetworkChainRule ¶

func CreateAllowedNetworkChainRule(chain string, net string) string

func CreateDefaultNetworkChainRule ¶

func CreateDefaultNetworkChainRule(chain string) string

func CreateEmptyChainRule ¶

func CreateEmptyChainRule(chainName string) string

func CreateRestrictedPortsAddRule ¶

func CreateRestrictedPortsAddRule(chain string, ports []string) string

func CreateRestrictedPortsDeleteRule ¶

func CreateRestrictedPortsDeleteRule(chain string, ports []string) string

func CreateRestrictedPortsMatchRule ¶

func CreateRestrictedPortsMatchRule(chain string, ports []string) string

func DiffSets ¶

func DiffSets(old map[string]bool, new map[string]bool) (added map[string]bool, deleted map[string]bool)

Compare two sets, old and new, and get added and deleted elements

func GetRestrictedPortsFromTablesData ¶

func GetRestrictedPortsFromTablesData(data []byte, chain string) []string

func JoinWords ¶

func JoinWords(words ...string) string

Join all words to line with space as delimiter

func Matched ¶

func Matched(a1, a2 []string) bool

Checks two slices/arrays are matched (have equal sets of unique elements)

func ToSet ¶

func ToSet(a []string) map[string]bool

Convert string slice/array to set-like map

func ValidateNetworks ¶

func ValidateNetworks(nets []string) error

Validate slice of IP networks (addresses or CIDRs)

func ValidatePorts ¶

func ValidatePorts(ports []string) error

Validate slice of IP port numbers in string form

func WriteLine ¶

func WriteLine(lines *bytes.Buffer, line string)

Write newline terminated line to the buffer