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package endpoints_test
import (
"context"
"fmt"
"io"
"log"
"net"
"net/http"
"os"
"path/filepath"
"runtime"
"strconv"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"github.com/lxc/incus/v6/internal/server/endpoints"
localUtil "github.com/lxc/incus/v6/internal/server/util"
"github.com/lxc/incus/v6/shared/api"
localtls "github.com/lxc/incus/v6/shared/tls"
"github.com/lxc/incus/v6/shared/tls/tlstest"
"github.com/lxc/incus/v6/shared/util"
)
// Return a new unstarted Endpoints instance, a Config with stub rest/devIncus
// servers, and a cleanup function that can be used to clear all state
// associated with the endpoints (e.g. the temporary var dir and any
// goroutine that was spawned by the tomb).
func newEndpoints(t *testing.T) (*endpoints.Endpoints, *endpoints.Config, func()) {
dir, err := os.MkdirTemp("", "incus-endpoints-test-")
require.NoError(t, err)
require.NoError(t, os.Mkdir(filepath.Join(dir, "guestapi"), 0o755))
config := &endpoints.Config{
Dir: dir,
UnixSocket: filepath.Join(dir, "unix.socket"),
RestServer: newServer(),
DevIncusServer: newServer(),
Cert: tlstest.TestingKeyPair(t),
VsockServer: newServer(),
}
endpoints := endpoints.Unstarted()
cleanup := func() {
assert.NoError(t, endpoints.Down())
// We need to kick the garbage collector because otherwise FDs
// will be left open and confuse the http.GetListeners() code
// that detects socket activation.
runtime.GC()
if util.PathExists(dir) {
require.NoError(t, os.RemoveAll(dir))
}
}
return endpoints, config, cleanup
}
// Perform an HTTP GET "/" over the unix socket at the given path.
func httpGetOverUnixSocket(path string) error {
dial := func(_ context.Context, network, addr string) (net.Conn, error) {
return net.Dial("unix", path)
}
client := &http.Client{Transport: &http.Transport{DialContext: dial}}
_, err := client.Get("http://unix.socket/")
return err
}
// Perform an HTTP GET "/" over TLS, using the given network address and server
// certificate.
func httpGetOverTLSSocket(addr string, cert *localtls.CertInfo) error {
tlsConfig, _ := localtls.GetTLSConfigMem("", "", "", string(cert.PublicKey()), false)
client := &http.Client{Transport: &http.Transport{TLSClientConfig: tlsConfig}}
_, err := client.Get(fmt.Sprintf("https://%s/", addr))
return err
}
// Returns a minimal stub for the REST API server, just realistic
// enough to make incus.ConnectIncusUnix succeed.
func newServer() *http.Server {
mux := http.NewServeMux()
mux.HandleFunc("/1.0/", func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/json")
_ = localUtil.WriteJSON(w, api.ResponseRaw{}, nil)
})
return &http.Server{Handler: mux, ErrorLog: log.New(io.Discard, "", 0)}
}
// Set the environment-variable for socket-based activation using the given
// file.
func setupSocketBasedActivation(endpoints *endpoints.Endpoints, file *os.File) {
_ = os.Setenv("LISTEN_PID", strconv.Itoa(os.Getpid()))
_ = os.Setenv("LISTEN_FDS", "1")
endpoints.SystemdListenFDsStart(int(file.Fd()))
}
// Assert that there are no socket-based activation variables in the
// environment.
func assertNoSocketBasedActivation(t *testing.T) {
// The environment variables are automatically cleaned, to avoid
// confusing child processes or other logic.
for _, name := range []string{"LISTEN_PID", "LISTEN_FDS"} {
_, ok := os.LookupEnv(name)
assert.Equal(t, false, ok)
}
}
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