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package netlink
import (
"fmt"
"net"
)
// Rule represents a netlink rule.
type Rule struct {
Priority int
Family int
Table int
Mark uint32
Mask *uint32
Tos uint
TunID uint
Goto int
Src *net.IPNet
Dst *net.IPNet
Flow int
IifName string
OifName string
SuppressIfgroup int
SuppressPrefixlen int
Invert bool
Dport *RulePortRange
Sport *RulePortRange
IPProto int
UIDRange *RuleUIDRange
Protocol uint8
Type uint8
}
func (r Rule) String() string {
from := "all"
if r.Src != nil && r.Src.String() != "<nil>" {
from = r.Src.String()
}
to := "all"
if r.Dst != nil && r.Dst.String() != "<nil>" {
to = r.Dst.String()
}
return fmt.Sprintf("ip rule %d: from %s to %s table %d %s",
r.Priority, from, to, r.Table, r.typeString())
}
// NewRule return empty rules.
func NewRule() *Rule {
return &Rule{
SuppressIfgroup: -1,
SuppressPrefixlen: -1,
Priority: -1,
Mark: 0,
Mask: nil,
Goto: -1,
Flow: -1,
}
}
// NewRulePortRange creates rule sport/dport range.
func NewRulePortRange(start, end uint16) *RulePortRange {
return &RulePortRange{Start: start, End: end}
}
// RulePortRange represents rule sport/dport range.
type RulePortRange struct {
Start uint16
End uint16
}
// NewRuleUIDRange creates rule uid range.
func NewRuleUIDRange(start, end uint32) *RuleUIDRange {
return &RuleUIDRange{Start: start, End: end}
}
// RuleUIDRange represents rule uid range.
type RuleUIDRange struct {
Start uint32
End uint32
}
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