isle/go/cmd/entrypoint/vpn_public_addr.go

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package main
import (
"errors"
"fmt"
)
var subCmdVPNPublicAddressGet = subCmd{
name: "get",
descr: "Display the currently configured public address",
do: doWithOutput(func(ctx subCmdCtx) (any, error) {
ctx, err := ctx.withParsedFlags(nil)
if err != nil {
return nil, fmt.Errorf("parsing flags: %w", err)
}
daemonRPC, err := ctx.newDaemonRPC()
if err != nil {
return nil, fmt.Errorf("creating daemon RPC client: %w", err)
}
defer daemonRPC.Close()
config, err := daemonRPC.GetConfig(ctx)
if err != nil {
return nil, fmt.Errorf("getting network config: %w", err)
}
if config.VPN.PublicAddr == "" {
return nil, errors.New("No public address configured")
}
return config.VPN.PublicAddr, nil
}),
}
var subCmdVPNPublicAddressSet = subCmd{
name: "set",
descr: "Set the public address of the host, or overwrite the already configured one",
do: func(ctx subCmdCtx) error {
var publicAddr addrFlag
publicAddrF := ctx.flags.VarPF(
&publicAddr,
"to",
"",
"Public address (host:port) that this host is publicly available on",
)
ctx, err := ctx.withParsedFlags(nil)
if err != nil {
return fmt.Errorf("parsing flags: %w", err)
}
if !publicAddrF.Changed {
return errors.New("--public-addr is required")
}
daemonRPC, err := ctx.newDaemonRPC()
if err != nil {
return fmt.Errorf("creating daemon RPC client: %w", err)
}
defer daemonRPC.Close()
config, err := daemonRPC.GetConfig(ctx)
if err != nil {
return fmt.Errorf("getting network config: %w", err)
}
config.VPN.PublicAddr = string(publicAddr.V)
return daemonRPC.SetConfig(ctx, config)
},
}
var subCmdVPNPublicAddressUnset = subCmd{
name: "unset",
descr: "Unset the public address",
do: func(ctx subCmdCtx) error {
ctx, err := ctx.withParsedFlags(nil)
if err != nil {
return fmt.Errorf("parsing flags: %w", err)
}
daemonRPC, err := ctx.newDaemonRPC()
if err != nil {
return fmt.Errorf("creating daemon RPC client: %w", err)
}
defer daemonRPC.Close()
config, err := daemonRPC.GetConfig(ctx)
if err != nil {
return fmt.Errorf("getting network config: %w", err)
}
config.VPN.PublicAddr = ""
return daemonRPC.SetConfig(ctx, config)
},
}
var subCmdVPNPublicAddress = subCmd{
name: "public-address",
descr: "Configure the public address of this host, allowing other hosts to use it in order to find and communicate directly with each other",
do: func(ctx subCmdCtx) error {
return ctx.doSubCmd(
subCmdVPNPublicAddressGet,
subCmdVPNPublicAddressSet,
subCmdVPNPublicAddressUnset,
)
},
}