zrhoffman commented on code in PR #7110:
URL: https://github.com/apache/trafficcontrol/pull/7110#discussion_r1131409458
##########
traffic_ops/traffic_ops_golang/login/login.go:
##########
@@ -108,135 +108,184 @@ Subject: {{.InstanceName}} Password Reset Request` +
"\r\n\r" + `
</html>
`))
+// LoginHandler first attempts to verify and parse user information from an
optionally
+// provided client TLS certificate. If it fails at any point, it will fall
back and
+// continue with the standard submitted form authentication.
func LoginHandler(db *sqlx.DB, cfg config.Config) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
defer r.Body.Close()
authenticated := false
form := auth.PasswordForm{}
- if err := json.NewDecoder(r.Body).Decode(&form); err != nil {
- api.HandleErr(w, r, nil, http.StatusBadRequest, err,
nil)
- return
- }
- if form.Username == "" || form.Password == "" {
- api.HandleErr(w, r, nil, http.StatusBadRequest,
errors.New("username and password are required"), nil)
- return
- }
- resp := struct {
- tc.Alerts
- }{}
+ var resp tc.Alerts
dbCtx, cancelTx := context.WithTimeout(r.Context(),
time.Duration(cfg.DBQueryTimeoutSeconds)*time.Second)
defer cancelTx()
- userAllowed, err, blockingErr :=
auth.CheckLocalUserIsAllowed(form, db, dbCtx)
- if blockingErr != nil {
- api.HandleErr(w, r, nil, http.StatusServiceUnavailable,
nil, fmt.Errorf("error checking local user password: %s\n",
blockingErr.Error()))
- return
- }
- if err != nil {
- log.Errorf("checking local user: %s\n", err.Error())
+
+ // Attempt to perform client certificate authentication. If
fails, goto standard form auth. If the
+ // certificate was verified, has a UID, and the UID matches an
existing user we consider this to
+ // be a successful login.
+ {
+ // No certs provided by the client. Skip to form
authentication
+ if r.TLS == nil || len(r.TLS.PeerCertificates) == 0 {
+ goto FormAuth
+ }
+
+ // If no configuration is set, skip to form auth
+ if cfg.ClientCertAuth == nil ||
len(cfg.ClientCertAuth.RootCertsDir) == 0 {
+ goto FormAuth
+ }
+
+ // Perform certificate verification to ensure it is
valid against Root CAs
+ err := auth.VerifyClientCertificate(r,
cfg.ClientCertAuth.RootCertsDir)
+ if err != nil {
+ log.Warnf("ClientCertAuth: error attempting to
verify client provided TLS certificate. err: %s\n", err)
+ goto FormAuth
+ }
+
+ // Client provided a verified certificate. Extract UID
value.
+ form.Username =
auth.ParseClientCertificateUID(r.TLS.PeerCertificates[0])
+ if len(form.Username) == 0 {
+ log.Infoln("ClientCertAuth: client provided
certificate did not contain a UID object identifier or value")
+ goto FormAuth
+ }
+
+ // Check if user exists locally (TODB) and has a role.
+ var blockingErr error
+ authenticated, err, blockingErr =
auth.CheckLocalUserIsAllowed(form.Username, db, dbCtx)
+ if blockingErr != nil {
+ api.HandleErr(w, r, nil,
http.StatusServiceUnavailable, nil, fmt.Errorf("error checking local user has
role: %s", blockingErr.Error()))
+ return
+ }
+ if err != nil {
+ log.Warnf("ClientCertAuth: checking local user:
%s\n", err.Error())
+ }
+
+ // Check LDAP if enabled
+ if !authenticated && cfg.LDAPEnabled {
+ _, authenticated, err =
auth.LookupUserDN(form.Username, cfg.ConfigLDAP)
+ if err != nil {
+ log.Warnf("ClientCertAuth: checking
ldap user: %s\n", err.Error())
Review Comment:
Fixed in #7110
##########
traffic_ops/traffic_ops_golang/login/login.go:
##########
@@ -108,135 +108,184 @@ Subject: {{.InstanceName}} Password Reset Request` +
"\r\n\r" + `
</html>
`))
+// LoginHandler first attempts to verify and parse user information from an
optionally
+// provided client TLS certificate. If it fails at any point, it will fall
back and
+// continue with the standard submitted form authentication.
func LoginHandler(db *sqlx.DB, cfg config.Config) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
defer r.Body.Close()
authenticated := false
form := auth.PasswordForm{}
- if err := json.NewDecoder(r.Body).Decode(&form); err != nil {
- api.HandleErr(w, r, nil, http.StatusBadRequest, err,
nil)
- return
- }
- if form.Username == "" || form.Password == "" {
- api.HandleErr(w, r, nil, http.StatusBadRequest,
errors.New("username and password are required"), nil)
- return
- }
- resp := struct {
- tc.Alerts
- }{}
+ var resp tc.Alerts
dbCtx, cancelTx := context.WithTimeout(r.Context(),
time.Duration(cfg.DBQueryTimeoutSeconds)*time.Second)
defer cancelTx()
- userAllowed, err, blockingErr :=
auth.CheckLocalUserIsAllowed(form, db, dbCtx)
- if blockingErr != nil {
- api.HandleErr(w, r, nil, http.StatusServiceUnavailable,
nil, fmt.Errorf("error checking local user password: %s\n",
blockingErr.Error()))
- return
- }
- if err != nil {
- log.Errorf("checking local user: %s\n", err.Error())
+
+ // Attempt to perform client certificate authentication. If
fails, goto standard form auth. If the
+ // certificate was verified, has a UID, and the UID matches an
existing user we consider this to
+ // be a successful login.
+ {
+ // No certs provided by the client. Skip to form
authentication
+ if r.TLS == nil || len(r.TLS.PeerCertificates) == 0 {
+ goto FormAuth
+ }
+
+ // If no configuration is set, skip to form auth
+ if cfg.ClientCertAuth == nil ||
len(cfg.ClientCertAuth.RootCertsDir) == 0 {
+ goto FormAuth
+ }
+
+ // Perform certificate verification to ensure it is
valid against Root CAs
+ err := auth.VerifyClientCertificate(r,
cfg.ClientCertAuth.RootCertsDir)
+ if err != nil {
+ log.Warnf("ClientCertAuth: error attempting to
verify client provided TLS certificate. err: %s\n", err)
+ goto FormAuth
+ }
+
+ // Client provided a verified certificate. Extract UID
value.
+ form.Username =
auth.ParseClientCertificateUID(r.TLS.PeerCertificates[0])
+ if len(form.Username) == 0 {
+ log.Infoln("ClientCertAuth: client provided
certificate did not contain a UID object identifier or value")
+ goto FormAuth
+ }
+
+ // Check if user exists locally (TODB) and has a role.
+ var blockingErr error
+ authenticated, err, blockingErr =
auth.CheckLocalUserIsAllowed(form.Username, db, dbCtx)
+ if blockingErr != nil {
+ api.HandleErr(w, r, nil,
http.StatusServiceUnavailable, nil, fmt.Errorf("error checking local user has
role: %s", blockingErr.Error()))
+ return
+ }
+ if err != nil {
+ log.Warnf("ClientCertAuth: checking local user:
%s\n", err.Error())
+ }
+
+ // Check LDAP if enabled
+ if !authenticated && cfg.LDAPEnabled {
+ _, authenticated, err =
auth.LookupUserDN(form.Username, cfg.ConfigLDAP)
+ if err != nil {
+ log.Warnf("ClientCertAuth: checking
ldap user: %s\n", err.Error())
+ }
+ }
}
- if userAllowed {
+
+ FormAuth:
+ // Failed certificate-based auth, perform standard form auth
+ if !authenticated {
+ // Perform form authentication
+ if err := json.NewDecoder(r.Body).Decode(&form); err !=
nil {
+ api.HandleErr(w, r, nil, http.StatusBadRequest,
err, nil)
+ return
+ }
+ if form.Username == "" || form.Password == "" {
+ api.HandleErr(w, r, nil, http.StatusBadRequest,
errors.New("username and password are required"), nil)
+ return
+ }
+
+ // Check if user exists and has a role
+ userAllowed, err, blockingErr :=
auth.CheckLocalUserIsAllowed(form.Username, db, dbCtx)
+ if blockingErr != nil {
+ api.HandleErr(w, r, nil,
http.StatusServiceUnavailable, nil, fmt.Errorf("error checking local user has
role: %s", blockingErr.Error()))
+ return
+ }
+ if err != nil {
+ log.Errorf("checking local user: %s\n",
err.Error())
+ }
+
+ // User w/ role does not exist, return unauthorized
+ if !userAllowed {
+ resp = tc.CreateAlerts(tc.ErrorLevel, "Invalid
username or password.")
+ w.WriteHeader(http.StatusUnauthorized)
+ api.WriteRespRaw(w, r, resp)
+ return
+ }
+
+ // Check local DB or LDAP
authenticated, err, blockingErr =
auth.CheckLocalUserPassword(form, db, dbCtx)
if blockingErr != nil {
- api.HandleErr(w, r, nil,
http.StatusServiceUnavailable, nil, fmt.Errorf("error checking local user
password: %s\n", blockingErr.Error()))
+ api.HandleErr(w, r, nil,
http.StatusServiceUnavailable, nil, fmt.Errorf("error checking local user
password: %s", blockingErr.Error()))
return
}
if err != nil {
log.Errorf("checking local user password:
%s\n", err.Error())
}
var ldapErr error
- if !authenticated {
- if cfg.LDAPEnabled {
- authenticated, ldapErr =
auth.CheckLDAPUser(form, cfg.ConfigLDAP)
- if ldapErr != nil {
- log.Errorf("checking ldap user:
%s\n", ldapErr.Error())
- }
+ if !authenticated && cfg.LDAPEnabled {
+ authenticated, ldapErr =
auth.CheckLDAPUser(form, cfg.ConfigLDAP)
+ if ldapErr != nil {
+ log.Errorf("checking ldap user: %s\n",
ldapErr.Error())
}
}
- if authenticated {
- httpCookie := tocookie.GetCookie(form.Username,
defaultCookieDuration, cfg.Secrets[0])
- http.SetCookie(w, httpCookie)
-
- var jwtToken jwt.Token
- var jwtSigned []byte
- jwtBuilder := jwt.NewBuilder()
-
- emptyConf := config.CdniConf{}
- if cfg.Cdni != nil && *cfg.Cdni != emptyConf {
- ucdn, err := auth.GetUserUcdn(form, db,
dbCtx)
- if err != nil {
- // log but do not error out
since this is optional in the JWT for CDNi integration
- log.Errorf("getting ucdn for
user %s: %v", form.Username, err)
- }
- jwtBuilder.Claim("iss", ucdn)
- jwtBuilder.Claim("aud", cfg.Cdni.DCdnId)
- }
+ }
- jwtBuilder.Claim("exp",
httpCookie.Expires.Unix())
- jwtBuilder.Claim(api.MojoCookie,
httpCookie.Value)
- jwtToken, err = jwtBuilder.Build()
- if err != nil {
- api.HandleErr(w, r, nil,
http.StatusInternalServerError, nil, fmt.Errorf("building token: %s", err))
- return
- }
+ // Failed to authenticate in either local DB or LDAP, return
unauthorized
+ if !authenticated {
+ resp = tc.CreateAlerts(tc.ErrorLevel, "Invalid username
or password.")
+ w.WriteHeader(http.StatusUnauthorized)
+ api.WriteRespRaw(w, r, resp)
+ return
+ }
- jwtSigned, err = jwt.Sign(jwtToken, jwa.HS256,
[]byte(cfg.Secrets[0]))
- if err != nil {
- api.HandleErr(w, r, nil,
http.StatusInternalServerError, nil, err)
- return
- }
+ // Successful authentication, write cookie and return
+ httpCookie := tocookie.GetCookie(form.Username,
defaultCookieDuration, cfg.Secrets[0])
+ http.SetCookie(w, httpCookie)
- http.SetCookie(w, &http.Cookie{
- Name: api.AccessToken,
- Value: string(jwtSigned),
- Path: "/",
- MaxAge: httpCookie.MaxAge,
- Expires: httpCookie.Expires,
- HttpOnly: true, // prevents the cookie
being accessed by Javascript. DO NOT remove, security vulnerability
- })
-
- // If all's well until here, then update last
authenticated time
- tx, txErr := db.BeginTx(dbCtx, nil)
- if txErr != nil {
- api.HandleErr(w, r, tx,
http.StatusInternalServerError, nil, fmt.Errorf("beginning transaction: %w",
txErr))
- return
- }
- defer func() {
- if err := tx.Commit(); err != nil &&
err != sql.ErrTxDone {
- log.Errorln("committing
transaction: " + err.Error())
- }
- }()
- _, dbErr := tx.Exec(UpdateLoginTimeQuery,
form.Username)
- if dbErr != nil {
- log.Errorf("unable to update
authentication time for a given user: %s\n", dbErr.Error())
- resp = struct {
- tc.Alerts
- }{tc.CreateAlerts(tc.ErrorLevel,
"Unable to update authentication time for a given user")}
- } else {
- resp = struct {
- tc.Alerts
- }{tc.CreateAlerts(tc.SuccessLevel,
"Successfully logged in.")}
- }
+ var jwtToken jwt.Token
+ var jwtSigned []byte
+ jwtBuilder := jwt.NewBuilder()
- } else {
- resp = struct {
- tc.Alerts
- }{tc.CreateAlerts(tc.ErrorLevel, "Invalid
username or password.")}
+ emptyConf := config.CdniConf{}
+ if cfg.Cdni != nil && *cfg.Cdni != emptyConf {
+ ucdn, err := auth.GetUserUcdn(form, db, dbCtx)
+ if err != nil {
+ // log but do not error out since this is
optional in the JWT for CDNi integration
+ log.Errorf("getting ucdn for user %s: %v",
form.Username, err)
}
- } else {
- resp = struct {
- tc.Alerts
- }{tc.CreateAlerts(tc.ErrorLevel, "Invalid username or
password.")}
+ jwtBuilder.Claim("iss", ucdn)
Review Comment:
Fixed in #7110
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