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vendor: update coreos/go-iptables

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Casey Callendrello 2017-05-03 11:54:41 +02:00
parent 8816992fcb
commit 539174f8c8
3 changed files with 268 additions and 8 deletions
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4
Godeps/Godeps.json generated
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@ -38,8 +38,8 @@
},
{
"ImportPath": "github.com/coreos/go-iptables/iptables",
"Comment": "v0.1.0",
"Rev": "fbb73372b87f6e89951c2b6b31470c2c9d5cfae3"
"Comment": "v0.1.0-9-g197187d",
"Rev": "197187d414d7704f99ea52a692b9672e76f063bf"
},
{
"ImportPath": "github.com/coreos/go-systemd/activation",

191
vendor/github.com/coreos/go-iptables/LICENSE generated vendored Normal file
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@ -0,0 +1,191 @@
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81
vendor/github.com/coreos/go-iptables/iptables/iptables.go generated vendored
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@ -39,29 +39,52 @@ func (e *Error) Error() string {
return fmt.Sprintf("exit status %v: %v", e.ExitStatus(), e.msg)
}
// Protocol to differentiate between IPv4 and IPv6
type Protocol byte
const (
ProtocolIPv4 Protocol = iota
ProtocolIPv6
)
type IPTables struct {
path string
proto Protocol
hasCheck bool
hasWait bool
}
// New creates a new IPTables.
// For backwards compatibility, this always uses IPv4, i.e. "iptables".
func New() (*IPTables, error) {
path, err := exec.LookPath("iptables")
return NewWithProtocol(ProtocolIPv4)
}
// New creates a new IPTables for the given proto.
// The proto will determine which command is used, either "iptables" or "ip6tables".
func NewWithProtocol(proto Protocol) (*IPTables, error) {
path, err := exec.LookPath(getIptablesCommand(proto))
if err != nil {
return nil, err
}
checkPresent, waitPresent, err := getIptablesCommandSupport()
checkPresent, waitPresent, err := getIptablesCommandSupport(path)
if err != nil {
return nil, fmt.Errorf("error checking iptables version: %v", err)
}
ipt := IPTables{
path: path,
proto: proto,
hasCheck: checkPresent,
hasWait: waitPresent,
}
return &ipt, nil
}
// Proto returns the protocol used by this IPTables.
func (ipt *IPTables) Proto() Protocol {
return ipt.proto
}
// Exists checks if given rulespec in specified table/chain exists
func (ipt *IPTables) Exists(table, chain string, rulespec ...string) (bool, error) {
if !ipt.hasCheck {
@ -116,6 +139,41 @@ func (ipt *IPTables) Delete(table, chain string, rulespec ...string) error {
// List rules in specified table/chain
func (ipt *IPTables) List(table, chain string) ([]string, error) {
args := []string{"-t", table, "-S", chain}
return ipt.executeList(args)
}
// List rules (with counters) in specified table/chain
func (ipt *IPTables) ListWithCounters(table, chain string) ([]string, error) {
args := []string{"-t", table, "-v", "-S", chain}
return ipt.executeList(args)
}
// ListChains returns a slice containing the name of each chain in the specified table.
func (ipt *IPTables) ListChains(table string) ([]string, error) {
args := []string{"-t", table, "-S"}
result, err := ipt.executeList(args)
if err != nil {
return nil, err
}
// Iterate over rules to find all default (-P) and user-specified (-N) chains.
// Chains definition always come before rules.
// Format is the following:
// -P OUTPUT ACCEPT
// -N Custom
var chains []string
for _, val := range result {
if strings.HasPrefix(val, "-P") || strings.HasPrefix(val, "-N") {
chains = append(chains, strings.Fields(val)[1])
} else {
break
}
}
return chains, nil
}
func (ipt *IPTables) executeList(args []string) ([]string, error) {
var stdout bytes.Buffer
if err := ipt.runWithOutput(args, &stdout); err != nil {
return nil, err
@ -129,6 +187,8 @@ func (ipt *IPTables) List(table, chain string) ([]string, error) {
return rules, nil
}
// NewChain creates a new chain in the specified table.
// If the chain already exists, it will result in an error.
func (ipt *IPTables) NewChain(table, chain string) error {
return ipt.run("-t", table, "-N", chain)
}
@ -200,9 +260,18 @@ func (ipt *IPTables) runWithOutput(args []string, stdout io.Writer) error {
return nil
}
// getIptablesCommand returns the correct command for the given protocol, either "iptables" or "ip6tables".
func getIptablesCommand(proto Protocol) string {
if proto == ProtocolIPv6 {
return "ip6tables"
} else {
return "iptables"
}
}
// Checks if iptables has the "-C" and "--wait" flag
func getIptablesCommandSupport() (bool, bool, error) {
vstring, err := getIptablesVersionString()
func getIptablesCommandSupport(path string) (bool, bool, error) {
vstring, err := getIptablesVersionString(path)
if err != nil {
return false, false, err
}
@ -243,8 +312,8 @@ func extractIptablesVersion(str string) (int, int, int, error) {
}
// Runs "iptables --version" to get the version string
func getIptablesVersionString() (string, error) {
cmd := exec.Command("iptables", "--version")
func getIptablesVersionString(path string) (string, error) {
cmd := exec.Command(path, "--version")
var out bytes.Buffer
cmd.Stdout = &out
err := cmd.Run()