80 lines
1.3 KiB
Go
80 lines
1.3 KiB
Go
package main
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import (
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"fmt"
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"net"
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"time"
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"kvas2-go/models"
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"kvas2-go/netfilter-helper"
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"github.com/coreos/go-iptables/iptables"
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)
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type Group struct {
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*models.Group
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Enabled bool
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iptables *iptables.IPTables
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ipset *netfilterHelper.IPSet
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ipsetToLink *netfilterHelper.IPSetToLink
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}
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func (g *Group) AddIPv4(address net.IP, ttl time.Duration) error {
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ttlSeconds := uint32(ttl.Seconds())
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return g.ipset.AddIP(address, &ttlSeconds)
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}
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func (g *Group) DelIPv4(address net.IP) error {
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return g.ipset.Del(address)
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}
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func (g *Group) ListIPv4() (map[string]*uint32, error) {
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return g.ipset.List()
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}
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func (g *Group) Enable() error {
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if g.Enabled {
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return nil
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}
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defer func() {
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if !g.Enabled {
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_ = g.Disable()
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}
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}()
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if g.FixProtect {
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err := g.iptables.AppendUnique("filter", "_NDM_SL_FORWARD", "-o", g.Interface, "-m", "state", "--state", "NEW", "-j", "_NDM_SL_PROTECT")
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if err != nil {
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return fmt.Errorf("failed to fix protect: %w", err)
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}
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}
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err := g.ipsetToLink.Enable()
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if err != nil {
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return err
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}
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g.Enabled = true
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return nil
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}
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func (g *Group) Disable() []error {
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var errs []error
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if !g.Enabled {
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return nil
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}
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err := g.ipsetToLink.Disable()
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if err != nil {
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errs = append(errs, err...)
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}
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g.Enabled = false
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return errs
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}
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