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authorNiall Sheridan <nsheridan@gmail.com>2017-02-19 23:28:33 +0000
committerNiall Sheridan <nsheridan@gmail.com>2017-02-20 22:13:56 +0000
commitfb830dc3531904be0a58e2c4dd4638b390bbdab2 (patch)
treefa9dc298dc7463be55d66ea855d82b9d111382fe /cmd/cashierd
parenteb57eaf30965ba24ff669d6f9c8d11cd24951777 (diff)
Split the servers out of main
Diffstat (limited to 'cmd/cashierd')
-rw-r--r--cmd/cashierd/handlers_test.go146
-rw-r--r--cmd/cashierd/main.go404
-rw-r--r--cmd/cashierd/rpc.go68
3 files changed, 3 insertions, 615 deletions
diff --git a/cmd/cashierd/handlers_test.go b/cmd/cashierd/handlers_test.go
deleted file mode 100644
index 934d5d0..0000000
--- a/cmd/cashierd/handlers_test.go
+++ /dev/null
@@ -1,146 +0,0 @@
-package main
-
-import (
- "bytes"
- "encoding/json"
- "io/ioutil"
- "net/http"
- "net/http/httptest"
- "net/url"
- "os"
- "strings"
- "testing"
- "time"
-
- "golang.org/x/crypto/ssh"
- "golang.org/x/oauth2"
-
- "github.com/gorilla/sessions"
- "github.com/nsheridan/cashier/lib"
- "github.com/nsheridan/cashier/server/auth"
- "github.com/nsheridan/cashier/server/auth/testprovider"
- "github.com/nsheridan/cashier/server/config"
- "github.com/nsheridan/cashier/server/signer"
- "github.com/nsheridan/cashier/server/store"
- "github.com/nsheridan/cashier/testdata"
- "github.com/stripe/krl"
-)
-
-func newContext(t *testing.T) *appContext {
- f, err := ioutil.TempFile(os.TempDir(), "signing_key_")
- if err != nil {
- t.Error(err)
- }
- defer os.Remove(f.Name())
- f.Write(testdata.Priv)
- f.Close()
- if keysigner, err = signer.New(&config.SSH{
- SigningKey: f.Name(),
- MaxAge: "1h",
- }); err != nil {
- t.Error(err)
- }
- authprovider = testprovider.New()
- certstore = store.NewMemoryStore()
- return &appContext{
- cookiestore: sessions.NewCookieStore([]byte("secret")),
- authsession: &auth.Session{AuthURL: "https://www.example.com/auth"},
- }
-}
-
-func TestLoginHandler(t *testing.T) {
- t.Parallel()
- req, _ := http.NewRequest("GET", "/auth/login", nil)
- resp := httptest.NewRecorder()
- loginHandler(newContext(t), resp, req)
- if resp.Code != http.StatusFound && resp.Header().Get("Location") != "https://www.example.com/auth" {
- t.Error("Unexpected response")
- }
-}
-
-func TestCallbackHandler(t *testing.T) {
- t.Parallel()
- req, _ := http.NewRequest("GET", "/auth/callback", nil)
- req.Form = url.Values{"state": []string{"state"}, "code": []string{"abcdef"}}
- resp := httptest.NewRecorder()
- ctx := newContext(t)
- ctx.setAuthStateCookie(resp, req, "state")
- callbackHandler(ctx, resp, req)
- if resp.Code != http.StatusFound && resp.Header().Get("Location") != "/" {
- t.Error("Unexpected response")
- }
-}
-
-func TestRootHandler(t *testing.T) {
- t.Parallel()
- req, _ := http.NewRequest("GET", "/", nil)
- resp := httptest.NewRecorder()
- ctx := newContext(t)
- tok := &oauth2.Token{
- AccessToken: "XXX_TEST_TOKEN_STRING_XXX",
- Expiry: time.Now().Add(1 * time.Hour),
- }
- ctx.setAuthTokenCookie(resp, req, tok)
- rootHandler(ctx, resp, req)
- if resp.Code != http.StatusOK && !strings.Contains(resp.Body.String(), "XXX_TEST_TOKEN_STRING_XXX") {
- t.Error("Unable to find token in response")
- }
-}
-
-func TestRootHandlerNoSession(t *testing.T) {
- t.Parallel()
- req, _ := http.NewRequest("GET", "/", nil)
- resp := httptest.NewRecorder()
- ctx := newContext(t)
- rootHandler(ctx, resp, req)
- if resp.Code != http.StatusSeeOther {
- t.Errorf("Unexpected status: %s, wanted %s", http.StatusText(resp.Code), http.StatusText(http.StatusSeeOther))
- }
-}
-
-func TestSignRevoke(t *testing.T) {
- t.Parallel()
- s, _ := json.Marshal(&lib.SignRequest{
- Key: string(testdata.Pub),
- ValidUntil: time.Now().UTC().Add(1 * time.Hour),
- })
- req, _ := http.NewRequest("POST", "/sign", bytes.NewReader(s))
- resp := httptest.NewRecorder()
- ctx := newContext(t)
- req.Header.Set("Authorization", "Bearer abcdef")
- signHandler(ctx, resp, req)
- if resp.Code != http.StatusOK {
- t.Error("Unexpected response")
- }
- r := &lib.SignResponse{}
- if err := json.NewDecoder(resp.Body).Decode(r); err != nil {
- t.Error(err)
- }
- if r.Status != "ok" {
- t.Error("Unexpected response")
- }
- k, _, _, _, err := ssh.ParseAuthorizedKey([]byte(r.Response))
- if err != nil {
- t.Error(err)
- }
- cert, ok := k.(*ssh.Certificate)
- if !ok {
- t.Error("Did not receive a certificate")
- }
- // Revoke the cert and verify
- req, _ = http.NewRequest("POST", "/revoke", nil)
- req.Form = url.Values{"cert_id": []string{cert.KeyId}}
- tok := &oauth2.Token{
- AccessToken: "authenticated",
- Expiry: time.Now().Add(1 * time.Hour),
- }
- ctx.setAuthTokenCookie(resp, req, tok)
- revokeCertHandler(ctx, resp, req)
- req, _ = http.NewRequest("GET", "/revoked", nil)
- listRevokedCertsHandler(ctx, resp, req)
- revoked, _ := ioutil.ReadAll(resp.Body)
- rl, _ := krl.ParseKRL(revoked)
- if !rl.IsRevoked(cert) {
- t.Errorf("cert %s was not revoked", cert.KeyId)
- }
-}
diff --git a/cmd/cashierd/main.go b/cmd/cashierd/main.go
index d355604..2e378bc 100644
--- a/cmd/cashierd/main.go
+++ b/cmd/cashierd/main.go
@@ -1,315 +1,20 @@
package main
import (
- "crypto/rand"
- "crypto/tls"
- "encoding/hex"
- "encoding/json"
"flag"
- "fmt"
- "html/template"
- "io"
"log"
- "net"
- "net/http"
- "os"
- "strconv"
- "strings"
- "github.com/pkg/errors"
- "github.com/soheilhy/cmux"
-
- "go4.org/wkfs"
- "golang.org/x/crypto/acme/autocert"
- "golang.org/x/oauth2"
-
- "github.com/gorilla/csrf"
- "github.com/gorilla/handlers"
- "github.com/gorilla/mux"
- "github.com/gorilla/sessions"
- wkfscache "github.com/nsheridan/autocert-wkfs-cache"
- "github.com/nsheridan/cashier/lib"
- "github.com/nsheridan/cashier/server/auth"
- "github.com/nsheridan/cashier/server/auth/github"
- "github.com/nsheridan/cashier/server/auth/gitlab"
- "github.com/nsheridan/cashier/server/auth/google"
+ "github.com/nsheridan/cashier/server"
"github.com/nsheridan/cashier/server/config"
- "github.com/nsheridan/cashier/server/metrics"
- "github.com/nsheridan/cashier/server/signer"
- "github.com/nsheridan/cashier/server/static"
- "github.com/nsheridan/cashier/server/store"
- "github.com/nsheridan/cashier/server/templates"
"github.com/nsheridan/cashier/server/wkfs/vaultfs"
"github.com/nsheridan/wkfs/s3"
- "github.com/prometheus/client_golang/prometheus/promhttp"
- "github.com/sid77/drop"
)
var (
cfg = flag.String("config_file", "cashierd.conf", "Path to configuration file.")
-
- authprovider auth.Provider
- certstore store.CertStorer
- keysigner *signer.KeySigner
)
-// appContext contains local context - cookiestore, authsession etc.
-type appContext struct {
- cookiestore *sessions.CookieStore
- authsession *auth.Session
-}
-
-// getAuthTokenCookie retrieves a cookie from the request.
-func (a *appContext) getAuthTokenCookie(r *http.Request) *oauth2.Token {
- session, _ := a.cookiestore.Get(r, "session")
- t, ok := session.Values["token"]
- if !ok {
- return nil
- }
- var tok oauth2.Token
- if err := json.Unmarshal(t.([]byte), &tok); err != nil {
- return nil
- }
- if !tok.Valid() {
- return nil
- }
- return &tok
-}
-
-// setAuthTokenCookie marshals the auth token and stores it as a cookie.
-func (a *appContext) setAuthTokenCookie(w http.ResponseWriter, r *http.Request, t *oauth2.Token) {
- session, _ := a.cookiestore.Get(r, "session")
- val, _ := json.Marshal(t)
- session.Values["token"] = val
- session.Save(r, w)
-}
-
-// getAuthStateCookie retrieves the oauth csrf state value from the client request.
-func (a *appContext) getAuthStateCookie(r *http.Request) string {
- session, _ := a.cookiestore.Get(r, "session")
- state, ok := session.Values["state"]
- if !ok {
- return ""
- }
- return state.(string)
-}
-
-// setAuthStateCookie saves the oauth csrf state value.
-func (a *appContext) setAuthStateCookie(w http.ResponseWriter, r *http.Request, state string) {
- session, _ := a.cookiestore.Get(r, "session")
- session.Values["state"] = state
- session.Save(r, w)
-}
-
-func (a *appContext) getCurrentURL(r *http.Request) string {
- session, _ := a.cookiestore.Get(r, "session")
- path, ok := session.Values["auth_url"]
- if !ok {
- return ""
- }
- return path.(string)
-}
-
-func (a *appContext) setCurrentURL(w http.ResponseWriter, r *http.Request) {
- session, _ := a.cookiestore.Get(r, "session")
- session.Values["auth_url"] = r.URL.Path
- session.Save(r, w)
-}
-
-func (a *appContext) isLoggedIn(w http.ResponseWriter, r *http.Request) bool {
- tok := a.getAuthTokenCookie(r)
- if !tok.Valid() || !authprovider.Valid(tok) {
- return false
- }
- return true
-}
-
-func (a *appContext) login(w http.ResponseWriter, r *http.Request) (int, error) {
- a.setCurrentURL(w, r)
- http.Redirect(w, r, "/auth/login", http.StatusSeeOther)
- return http.StatusSeeOther, nil
-}
-
-// parseKey retrieves and unmarshals the signing request.
-func extractKey(r *http.Request) (*lib.SignRequest, error) {
- var s lib.SignRequest
- if err := json.NewDecoder(r.Body).Decode(&s); err != nil {
- return nil, err
- }
- return &s, nil
-}
-
-// signHandler handles the "/sign" path.
-// It unmarshals the client token to an oauth token, validates it and signs the provided public ssh key.
-func signHandler(a *appContext, w http.ResponseWriter, r *http.Request) (int, error) {
- var t string
- if ah := r.Header.Get("Authorization"); ah != "" {
- if len(ah) > 6 && strings.ToUpper(ah[0:7]) == "BEARER " {
- t = ah[7:]
- }
- }
- if t == "" {
- return http.StatusUnauthorized, errors.New(http.StatusText(http.StatusUnauthorized))
- }
- token := &oauth2.Token{
- AccessToken: t,
- }
- if !authprovider.Valid(token) {
- return http.StatusUnauthorized, errors.New(http.StatusText(http.StatusUnauthorized))
- }
-
- // Sign the pubkey and issue the cert.
- req, err := extractKey(r)
- if err != nil {
- return http.StatusBadRequest, errors.Wrap(err, "unable to extract key from request")
- }
- username := authprovider.Username(token)
- authprovider.Revoke(token) // We don't need this anymore.
- cert, err := keysigner.SignUserKey(req, username)
- if err != nil {
- return http.StatusInternalServerError, errors.Wrap(err, "error signing key")
- }
- if err := certstore.SetCert(cert); err != nil {
- log.Printf("Error recording cert: %v", err)
- }
- if err := json.NewEncoder(w).Encode(&lib.SignResponse{
- Status: "ok",
- Response: string(lib.GetPublicKey(cert)),
- }); err != nil {
- return http.StatusInternalServerError, errors.Wrap(err, "error encoding response")
- }
- return http.StatusOK, nil
-}
-
-// loginHandler starts the authentication process with the provider.
-func loginHandler(a *appContext, w http.ResponseWriter, r *http.Request) (int, error) {
- state := newState()
- a.setAuthStateCookie(w, r, state)
- a.authsession = authprovider.StartSession(state)
- http.Redirect(w, r, a.authsession.AuthURL, http.StatusFound)
- return http.StatusFound, nil
-}
-
-// callbackHandler handles retrieving the access token from the auth provider and saves it for later use.
-func callbackHandler(a *appContext, w http.ResponseWriter, r *http.Request) (int, error) {
- if r.FormValue("state") != a.getAuthStateCookie(r) {
- return http.StatusUnauthorized, errors.New(http.StatusText(http.StatusUnauthorized))
- }
- code := r.FormValue("code")
- if err := a.authsession.Authorize(authprovider, code); err != nil {
- return http.StatusInternalServerError, err
- }
- a.setAuthTokenCookie(w, r, a.authsession.Token)
- http.Redirect(w, r, a.getCurrentURL(r), http.StatusFound)
- return http.StatusFound, nil
-}
-
-// rootHandler starts the auth process. If the client is authenticated it renders the token to the user.
-func rootHandler(a *appContext, w http.ResponseWriter, r *http.Request) (int, error) {
- if !a.isLoggedIn(w, r) {
- return a.login(w, r)
- }
- tok := a.getAuthTokenCookie(r)
- page := struct {
- Token string
- }{tok.AccessToken}
-
- tmpl := template.Must(template.New("token.html").Parse(templates.Token))
- tmpl.Execute(w, page)
- return http.StatusOK, nil
-}
-
-func listRevokedCertsHandler(a *appContext, w http.ResponseWriter, r *http.Request) (int, error) {
- revoked, err := certstore.GetRevoked()
- if err != nil {
- return http.StatusInternalServerError, err
- }
- rl, err := keysigner.GenerateRevocationList(revoked)
- if err != nil {
- return http.StatusInternalServerError, errors.Wrap(err, "unable to generate KRL")
- }
- w.Header().Set("Content-Type", "application/octet-stream")
- w.Write(rl)
- return http.StatusOK, nil
-}
-
-func listAllCertsHandler(a *appContext, w http.ResponseWriter, r *http.Request) (int, error) {
- if !a.isLoggedIn(w, r) {
- return a.login(w, r)
- }
- tmpl := template.Must(template.New("certs.html").Parse(templates.Certs))
- tmpl.Execute(w, map[string]interface{}{
- csrf.TemplateTag: csrf.TemplateField(r),
- })
- return http.StatusOK, nil
-}
-
-func listCertsJSONHandler(a *appContext, w http.ResponseWriter, r *http.Request) (int, error) {
- if !a.isLoggedIn(w, r) {
- return http.StatusUnauthorized, errors.New(http.StatusText(http.StatusUnauthorized))
- }
- includeExpired, _ := strconv.ParseBool(r.URL.Query().Get("all"))
- certs, err := certstore.List(includeExpired)
- j, err := json.Marshal(certs)
- if err != nil {
- return http.StatusInternalServerError, errors.New(http.StatusText(http.StatusInternalServerError))
- }
- w.Write(j)
- return http.StatusOK, nil
-}
-
-func revokeCertHandler(a *appContext, w http.ResponseWriter, r *http.Request) (int, error) {
- if !a.isLoggedIn(w, r) {
- return a.login(w, r)
- }
- r.ParseForm()
- for _, id := range r.Form["cert_id"] {
- if err := certstore.Revoke(id); err != nil {
- return http.StatusInternalServerError, errors.Wrap(err, "unable to revoke")
- }
- }
- http.Redirect(w, r, "/admin/certs", http.StatusSeeOther)
- return http.StatusSeeOther, nil
-}
-
-// appHandler is a handler which uses appContext to manage state.
-type appHandler struct {
- *appContext
- h func(*appContext, http.ResponseWriter, *http.Request) (int, error)
-}
-
-// ServeHTTP handles the request and writes responses.
-func (ah appHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
- status, err := ah.h(ah.appContext, w, r)
- if err != nil {
- log.Printf("HTTP %d: %q", status, err)
- http.Error(w, err.Error(), status)
- }
-}
-
-// newState generates a state identifier for the oauth process.
-func newState() string {
- k := make([]byte, 32)
- if _, err := io.ReadFull(rand.Reader, k); err != nil {
- return "unexpectedstring"
- }
- return hex.EncodeToString(k)
-}
-
-func loadCerts(certFile, keyFile string) (tls.Certificate, error) {
- key, err := wkfs.ReadFile(keyFile)
- if err != nil {
- return tls.Certificate{}, errors.Wrap(err, "error reading TLS private key")
- }
- cert, err := wkfs.ReadFile(certFile)
- if err != nil {
- return tls.Certificate{}, errors.Wrap(err, "error reading TLS certificate")
- }
- return tls.X509KeyPair(cert, key)
-}
-
func main() {
- // Privileged section
flag.Parse()
conf, err := config.ReadConfig(*cfg)
if err != nil {
@@ -327,109 +32,6 @@ func main() {
})
vaultfs.Register(conf.Vault)
- keysigner, err = signer.New(conf.SSH)
- if err != nil {
- log.Fatal(err)
- }
-
- logfile := os.Stderr
- if conf.Server.HTTPLogFile != "" {
- logfile, err = os.OpenFile(conf.Server.HTTPLogFile, os.O_WRONLY|os.O_APPEND|os.O_CREATE, 0640)
- if err != nil {
- log.Printf("unable to open %s for writing. logging to stdout", conf.Server.HTTPLogFile)
- logfile = os.Stderr
- }
- }
-
- laddr := fmt.Sprintf("%s:%d", conf.Server.Addr, conf.Server.Port)
- l, err := net.Listen("tcp", laddr)
- if err != nil {
- log.Fatal(errors.Wrapf(err, "unable to listen on %s:%d", conf.Server.Addr, conf.Server.Port))
- }
-
- tlsConfig := &tls.Config{}
- if conf.Server.UseTLS {
- if conf.Server.LetsEncryptServername != "" {
- m := autocert.Manager{
- Prompt: autocert.AcceptTOS,
- Cache: wkfscache.Cache(conf.Server.LetsEncryptCache),
- HostPolicy: autocert.HostWhitelist(conf.Server.LetsEncryptServername),
- }
- tlsConfig.GetCertificate = m.GetCertificate
- } else {
- if conf.Server.TLSCert == "" || conf.Server.TLSKey == "" {
- log.Fatal("TLS cert or key not specified in config")
- }
- tlsConfig.Certificates = make([]tls.Certificate, 1)
- tlsConfig.Certificates[0], err = loadCerts(conf.Server.TLSCert, conf.Server.TLSKey)
- if err != nil {
- log.Fatal(errors.Wrap(err, "unable to create TLS listener"))
- }
- }
- l = tls.NewListener(l, tlsConfig)
- }
-
- if conf.Server.User != "" {
- log.Print("Dropping privileges...")
- if err := drop.DropPrivileges(conf.Server.User); err != nil {
- log.Fatal(errors.Wrap(err, "unable to drop privileges"))
- }
- }
-
- // Unprivileged section
- metrics.Register()
-
- switch conf.Auth.Provider {
- case "google":
- authprovider, err = google.New(conf.Auth)
- case "github":
- authprovider, err = github.New(conf.Auth)
- case "gitlab":
- authprovider, err = gitlab.New(conf.Auth)
- default:
- log.Fatalf("Unknown provider %s\n", conf.Auth.Provider)
- }
- if err != nil {
- log.Fatal(errors.Wrapf(err, "unable to use provider '%s'", conf.Auth.Provider))
- }
-
- certstore, err = store.New(conf.Server.Database)
- if err != nil {
- log.Fatal(err)
- }
- ctx := &appContext{
- cookiestore: sessions.NewCookieStore([]byte(conf.Server.CookieSecret)),
- }
- ctx.cookiestore.Options = &sessions.Options{
- MaxAge: 900,
- Path: "/",
- Secure: conf.Server.UseTLS,
- HttpOnly: true,
- }
-
- CSRF := csrf.Protect([]byte(conf.Server.CSRFSecret), csrf.Secure(conf.Server.UseTLS))
- r := mux.NewRouter()
- r.Methods("GET").Path("/").Handler(appHandler{ctx, rootHandler})
- r.Methods("GET").Path("/auth/login").Handler(appHandler{ctx, loginHandler})
- r.Methods("GET").Path("/auth/callback").Handler(appHandler{ctx, callbackHandler})
- r.Methods("POST").Path("/sign").Handler(appHandler{ctx, signHandler})
- r.Methods("GET").Path("/revoked").Handler(appHandler{ctx, listRevokedCertsHandler})
- r.Methods("POST").Path("/admin/revoke").Handler(CSRF(appHandler{ctx, revokeCertHandler}))
- r.Methods("GET").Path("/admin/certs").Handler(CSRF(appHandler{ctx, listAllCertsHandler}))
- r.Methods("GET").Path("/admin/certs.json").Handler(appHandler{ctx, listCertsJSONHandler})
- r.Methods("GET").Path("/metrics").Handler(promhttp.Handler())
- r.PathPrefix("/").Handler(http.FileServer(static.FS(false)))
- h := handlers.LoggingHandler(logfile, r)
-
- log.Printf("Starting server on %s", laddr)
- s := &http.Server{
- Handler: h,
- }
-
- cm := cmux.New(l)
- httpl := cm.Match(cmux.HTTP1Fast())
- grpcl := cm.Match(cmux.HTTP2HeaderField("content-type", "application/grpc"))
- go s.Serve(httpl)
- go newGrpcServer(grpcl)
- log.Fatal(cm.Serve())
+ // Start the servers
+ server.Run(conf)
}
diff --git a/cmd/cashierd/rpc.go b/cmd/cashierd/rpc.go
deleted file mode 100644
index ad8aa5d..0000000
--- a/cmd/cashierd/rpc.go
+++ /dev/null
@@ -1,68 +0,0 @@
-package main
-
-import (
- "log"
- "net"
-
- "golang.org/x/net/context"
-
- "golang.org/x/oauth2"
-
- "google.golang.org/grpc"
- "google.golang.org/grpc/codes"
- "google.golang.org/grpc/metadata"
-
- "github.com/nsheridan/cashier/lib"
- "github.com/nsheridan/cashier/proto"
-)
-
-type rpcServer struct{}
-
-type key int
-
-const usernameKey key = 0
-
-func (s *rpcServer) Sign(ctx context.Context, req *proto.SignRequest) (*proto.SignResponse, error) {
- username, ok := ctx.Value(usernameKey).(string)
- if !ok {
- return nil, grpc.Errorf(codes.InvalidArgument, "Error reading username")
- }
- cert, err := keysigner.SignUserKeyFromRPC(req, username)
- if err != nil {
- return nil, grpc.Errorf(codes.InvalidArgument, err.Error())
- }
- if err := certstore.SetCert(cert); err != nil {
- log.Printf("Error recording cert: %v", err)
- }
- resp := &proto.SignResponse{
- Cert: lib.GetPublicKey(cert),
- }
- return resp, nil
-}
-
-func authInterceptor(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (resp interface{}, err error) {
- md, ok := metadata.FromContext(ctx)
- if !ok {
- return nil, grpc.Errorf(codes.Unauthenticated, "request not authenticated")
- }
- switch md["security"][0] {
- case "authorization":
- token := &oauth2.Token{
- AccessToken: md["payload"][0],
- }
- if !authprovider.Valid(token) {
- return nil, grpc.Errorf(codes.PermissionDenied, "access denied")
- }
- authprovider.Revoke(token)
- ctx = context.WithValue(ctx, usernameKey, authprovider.Username(token))
- default:
- return nil, grpc.Errorf(codes.InvalidArgument, "unknown argument")
- }
- return handler(ctx, req)
-}
-
-func newGrpcServer(l net.Listener) {
- serv := grpc.NewServer(grpc.UnaryInterceptor(authInterceptor))
- proto.RegisterSignerServer(serv, &rpcServer{})
- serv.Serve(l)
-}