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wireguard.go
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wireguard.go
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package wireguard
import (
"context"
"fmt"
"os"
"github.com/olekukonko/tablewriter"
"github.com/pkg/errors"
"github.com/spf13/viper"
fly "github.com/superfly/fly-go"
"github.com/superfly/flyctl/agent"
"github.com/superfly/flyctl/flyctl"
"github.com/superfly/flyctl/internal/config"
"github.com/superfly/flyctl/internal/flag"
"github.com/superfly/flyctl/internal/render"
"github.com/superfly/flyctl/internal/state"
"github.com/superfly/flyctl/internal/wireguard"
"github.com/superfly/flyctl/iostreams"
"github.com/superfly/flyctl/terminal"
)
func runWireguardList(ctx context.Context) error {
io := iostreams.FromContext(ctx)
apiClient := fly.ClientFromContext(ctx)
org, err := orgByArg(ctx)
if err != nil {
return err
}
peers, err := apiClient.GetWireGuardPeers(ctx, org.Slug)
if err != nil {
return err
}
if config.FromContext(ctx).JSONOutput {
render.JSON(io.Out, peers)
return nil
}
table := tablewriter.NewWriter(io.Out)
table.SetHeader([]string{
"Name",
"Region",
"Peer IP",
})
for _, peer := range peers {
table.Append([]string{peer.Name, peer.Region, peer.Peerip})
}
table.Render()
return nil
}
func runWireguardWebsockets(ctx context.Context) error {
io := iostreams.FromContext(ctx)
var (
configPath = state.ConfigFile(ctx)
err error
)
switch flag.FirstArg(ctx) {
case "enable":
viper.Set(flyctl.ConfigWireGuardWebsockets, true)
err = config.SetWireGuardWebsocketsEnabled(configPath, true)
case "disable":
viper.Set(flyctl.ConfigWireGuardWebsockets, false)
err = config.SetWireGuardWebsocketsEnabled(configPath, false)
default:
fmt.Fprintf(io.Out, "bad arg: flyctl wireguard websockets (enable|disable)\n")
}
if err != nil {
return errors.Wrap(err, "error saving config file")
}
tryKillingAgent := func() error {
client, err := agent.DefaultClient(ctx)
if err == agent.ErrAgentNotRunning {
return nil
} else if err != nil {
return err
}
return client.Kill(ctx)
}
// kill the agent if necessary, if that fails print manual instructions
if err := tryKillingAgent(); err != nil {
terminal.Debugf("error stopping the agent: %s", err)
fmt.Fprintf(io.Out, "Run `flyctl agent restart` to make changes take effect.\n")
}
return nil
}
func runWireguardReset(ctx context.Context) error {
io := iostreams.FromContext(ctx)
org, err := orgByArg(ctx)
if err != nil {
return err
}
apiClient := fly.ClientFromContext(ctx)
agentclient, err := agent.Establish(ctx, apiClient)
if err != nil {
return err
}
conf, err := agentclient.Reestablish(ctx, org.Slug, "")
if err != nil {
return err
}
fmt.Fprintf(io.Out, "New WireGuard peer for organization '%s': '%s'\n", org.Slug, conf.WireGuardState.Name)
return nil
}
func runWireguardCreate(ctx context.Context) error {
io := iostreams.FromContext(ctx)
apiClient := fly.ClientFromContext(ctx)
org, err := orgByArg(ctx)
if err != nil {
return err
}
args := flag.Args(ctx)
var region string
var name string
if len(args) > 1 && args[1] != "" {
region = args[1]
}
if len(args) > 2 && args[2] != "" {
name = args[2]
}
//TODO: allow custom network
network := ""
state, err := wireguard.Create(apiClient, org, region, name, network)
if err != nil {
return err
}
data := &state.Peer
fmt.Fprintf(io.Out, `
!!!! WARNING: Output includes private key. Private keys cannot be recovered !!!!
!!!! after creating the peer; if you lose the key, you'll need to remove !!!!
!!!! and re-add the peering connection. !!!!
`)
w, shouldClose, err := resolveOutputWriter(ctx, 3, "Filename to store WireGuard configuration in, or 'stdout': ")
if err != nil {
return err
}
if shouldClose {
defer w.Close() // skipcq: GO-S2307
}
generateWgConf(data, state.LocalPrivate, w)
if shouldClose {
filename := w.(*os.File).Name()
fmt.Fprintf(io.Out, "Wrote WireGuard configuration to %s; load in your WireGuard client\n", filename)
}
return nil
}
func runWireguardRemove(ctx context.Context) error {
io := iostreams.FromContext(ctx)
apiClient := fly.ClientFromContext(ctx)
org, err := orgByArg(ctx)
if err != nil {
return err
}
args := flag.Args(ctx)
var name string
if len(args) >= 2 {
name = args[1]
} else {
name, err = selectWireGuardPeer(ctx, apiClient, org.Slug)
if err != nil {
return err
}
}
fmt.Fprintf(io.Out, "Removing WireGuard peer \"%s\" for organization %s\n", name, org.Slug)
err = apiClient.RemoveWireGuardPeer(ctx, org, name)
if err != nil {
return err
}
fmt.Fprintln(io.Out, "Removed peer.")
return wireguard.PruneInvalidPeers(ctx, apiClient)
}