67 lines
1.8 KiB
Go
67 lines
1.8 KiB
Go
// Package firewall defines a configurator used to change the state
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// of the firewall as well as do some light routing changes.
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package firewall
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import (
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"context"
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"net"
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"sync"
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"github.com/qdm12/gluetun/internal/models"
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"github.com/qdm12/gluetun/internal/routing"
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"github.com/qdm12/golibs/command"
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"github.com/qdm12/golibs/logging"
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)
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var _ Configurator = (*Config)(nil)
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// Configurator allows to change firewall rules and modify network routes.
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type Configurator interface {
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Enabler
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VPNConnectionSetter
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PortAllower
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OutboundSubnetsSetter
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}
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type Config struct { //nolint:maligned
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runner command.Runner
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logger logging.Logger
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routing routing.Routing
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iptablesMutex sync.Mutex
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ip6tablesMutex sync.Mutex
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defaultInterface string
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defaultGateway net.IP
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localNetworks []routing.LocalNetwork
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localIP net.IP
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// Fixed state
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ip6Tables bool
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customRulesPath string
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// State
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enabled bool
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vpnConnection models.OpenVPNConnection
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outboundSubnets []net.IPNet
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allowedInputPorts map[uint16]string // port to interface mapping
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stateMutex sync.Mutex
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}
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// NewConfig creates a new Config instance.
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func NewConfig(logger logging.Logger, runner command.Runner,
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routing routing.Routing, defaultInterface string, defaultGateway net.IP,
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localNetworks []routing.LocalNetwork, localIP net.IP) *Config {
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return &Config{
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runner: runner,
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logger: logger,
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routing: routing,
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allowedInputPorts: make(map[uint16]string),
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ip6Tables: ip6tablesSupported(context.Background(), runner),
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customRulesPath: "/iptables/post-rules.txt",
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// Obtained from routing
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defaultInterface: defaultInterface,
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defaultGateway: defaultGateway,
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localNetworks: localNetworks,
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localIP: localIP,
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}
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}
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