headscale/hscontrol/tailsql.go

100 lines
2.6 KiB
Go

package hscontrol
import (
"context"
"fmt"
"net/http"
"os"
"github.com/tailscale/tailsql/server/tailsql"
"tailscale.com/tsnet"
"tailscale.com/tsweb"
"tailscale.com/types/logger"
)
func runTailSQLService(ctx context.Context, logf logger.Logf, stateDir, dbPath string) error {
opts := tailsql.Options{
Hostname: "tailsql-headscale",
StateDir: stateDir,
Sources: []tailsql.DBSpec{
{
Source: "headscale",
Label: "headscale - sqlite",
Driver: "sqlite",
URL: fmt.Sprintf("file:%s?mode=ro", dbPath),
Named: map[string]string{
"schema": `select * from sqlite_schema`,
},
},
},
}
tsNode := &tsnet.Server{
Dir: os.ExpandEnv(opts.StateDir),
Hostname: opts.Hostname,
Logf: logger.Discard,
}
// if *doDebugLog {
// tsNode.Logf = logf
// }
defer tsNode.Close()
logf("Starting tailscale (hostname=%q)", opts.Hostname)
lc, err := tsNode.LocalClient()
if err != nil {
return fmt.Errorf("connect local client: %w", err)
}
opts.LocalClient = lc // for authentication
// Make sure the Tailscale node starts up. It might not, if it is a new node
// and the user did not provide an auth key.
if st, err := tsNode.Up(ctx); err != nil {
return fmt.Errorf("starting tailscale: %w", err)
} else {
logf("tailscale started, node state %q", st.BackendState)
}
// Reaching here, we have a running Tailscale node, now we can set up the
// HTTP and/or HTTPS plumbing for TailSQL itself.
tsql, err := tailsql.NewServer(opts)
if err != nil {
return fmt.Errorf("creating tailsql server: %w", err)
}
lst, err := tsNode.Listen("tcp", ":80")
if err != nil {
return fmt.Errorf("listen port 80: %w", err)
}
if opts.ServeHTTPS {
// When serving TLS, add a redirect from HTTP on port 80 to HTTPS on 443.
certDomains := tsNode.CertDomains()
if len(certDomains) == 0 {
return fmt.Errorf("no cert domains available for HTTPS")
}
base := "https://" + certDomains[0]
go http.Serve(lst, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
target := base + r.RequestURI
http.Redirect(w, r, target, http.StatusPermanentRedirect)
}))
// log.Printf("Redirecting HTTP to HTTPS at %q", base)
// For the real service, start a separate listener.
// Note: Replaces the port 80 listener.
var err error
lst, err = tsNode.ListenTLS("tcp", ":443")
if err != nil {
return fmt.Errorf("listen TLS: %w", err)
}
logf("enabled serving via HTTPS")
}
mux := tsql.NewMux()
tsweb.Debugger(mux)
go http.Serve(lst, mux)
logf("ailSQL started")
<-ctx.Done()
logf("TailSQL shutting down...")
return tsNode.Close()
}