7d824a5179
- Better settings tree structure logged using `qdm12/gotree` - Read settings from environment variables, then files, then secret files - Settings methods to default them, merge them and override them - `DNS_PLAINTEXT_ADDRESS` default changed to `127.0.0.1` to use DoT. Warning added if set to something else. - `HTTPPROXY_LISTENING_ADDRESS` instead of `HTTPPROXY_PORT` (with retro-compatibility)
83 lines
2.3 KiB
Go
83 lines
2.3 KiB
Go
package settings
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import (
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"fmt"
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"net"
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"github.com/qdm12/gluetun/internal/configuration/settings/helpers"
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"github.com/qdm12/gotree"
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)
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// DNS contains settings to configure DNS.
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type DNS struct {
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// ServerAddress is the DNS server to use inside
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// the Go program and for the system.
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// It defaults to '127.0.0.1' to be used with the
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// DoT server. It cannot be nil in the internal
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// state.
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ServerAddress net.IP
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// KeepNameserver is true if the Docker DNS server
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// found in /etc/resolv.conf should be kept.
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// Note settings this to true will go around the
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// DoT server blocking.
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// It defaults to false and cannot be nil in the
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// internal state.
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KeepNameserver *bool
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// DOT contains settings to configure the DoT
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// server.
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DoT DoT
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}
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func (d DNS) validate() (err error) {
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err = d.DoT.validate()
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if err != nil {
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return fmt.Errorf("failed validating DoT settings: %w", err)
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}
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return nil
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}
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func (d *DNS) Copy() (copied DNS) {
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return DNS{
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ServerAddress: helpers.CopyIP(d.ServerAddress),
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KeepNameserver: helpers.CopyBoolPtr(d.KeepNameserver),
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DoT: d.DoT.copy(),
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}
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}
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// mergeWith merges the other settings into any
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// unset field of the receiver settings object.
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func (d *DNS) mergeWith(other DNS) {
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d.ServerAddress = helpers.MergeWithIP(d.ServerAddress, other.ServerAddress)
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d.KeepNameserver = helpers.MergeWithBool(d.KeepNameserver, other.KeepNameserver)
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d.DoT.mergeWith(other.DoT)
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}
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// overrideWith overrides fields of the receiver
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// settings object with any field set in the other
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// settings.
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func (d *DNS) overrideWith(other DNS) {
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d.ServerAddress = helpers.OverrideWithIP(d.ServerAddress, other.ServerAddress)
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d.KeepNameserver = helpers.OverrideWithBool(d.KeepNameserver, other.KeepNameserver)
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d.DoT.overrideWith(other.DoT)
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}
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func (d *DNS) setDefaults() {
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localhost := net.IPv4(127, 0, 0, 1) //nolint:gomnd
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d.ServerAddress = helpers.DefaultIP(d.ServerAddress, localhost)
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d.KeepNameserver = helpers.DefaultBool(d.KeepNameserver, false)
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d.DoT.setDefaults()
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}
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func (d DNS) String() string {
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return d.toLinesNode().String()
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}
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func (d DNS) toLinesNode() (node *gotree.Node) {
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node = gotree.New("DNS settings:")
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node.Appendf("DNS server address to use: %s", d.ServerAddress)
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node.Appendf("Keep existing nameserver(s): %s", helpers.BoolPtrToYesNo(d.KeepNameserver))
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node.AppendNode(d.DoT.toLinesNode())
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return node
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}
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