Implement SAML endpoints for APIv4 (#5671)

* Implement SAML endpoints for APIv4

* Fix unit test

* Only disable encryption when removing puplic/private certs

api4/saml.go

@@ -0,0 +1,171 @@
+// Copyright (c) 2017 Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package api4
+
+import (
+	"mime/multipart"
+	"net/http"
+
+	l4g "github.com/alecthomas/log4go"
+	"github.com/mattermost/platform/app"
+	"github.com/mattermost/platform/model"
+	"github.com/mattermost/platform/utils"
+)
+
+func InitSaml() {
+	l4g.Debug(utils.T("api.saml.init.debug"))
+
+	BaseRoutes.SAML.Handle("/metadata", ApiHandler(getSamlMetadata)).Methods("GET")
+
+	BaseRoutes.SAML.Handle("/certificate/public", ApiSessionRequired(addSamlPublicCertificate)).Methods("POST")
+	BaseRoutes.SAML.Handle("/certificate/private", ApiSessionRequired(addSamlPrivateCertificate)).Methods("POST")
+	BaseRoutes.SAML.Handle("/certificate/idp", ApiSessionRequired(addSamlIdpCertificate)).Methods("POST")
+
+	BaseRoutes.SAML.Handle("/certificate/public", ApiSessionRequired(removeSamlPublicCertificate)).Methods("DELETE")
+	BaseRoutes.SAML.Handle("/certificate/private", ApiSessionRequired(removeSamlPrivateCertificate)).Methods("DELETE")
+	BaseRoutes.SAML.Handle("/certificate/idp", ApiSessionRequired(removeSamlIdpCertificate)).Methods("DELETE")
+
+	BaseRoutes.SAML.Handle("/certificate/status", ApiSessionRequired(getSamlCertificateStatus)).Methods("GET")
+}
+
+func getSamlMetadata(c *Context, w http.ResponseWriter, r *http.Request) {
+	metadata, err := app.GetSamlMetadata()
+	if err != nil {
+		c.Err = err
+		return
+	}
+
+	w.Header().Set("Content-Type", "application/xml")
+	w.Header().Set("Content-Disposition", "attachment; filename=\"metadata.xml\"")
+	w.Write([]byte(metadata))
+}
+
+func parseSamlCertificateRequest(r *http.Request) (*multipart.FileHeader, *model.AppError) {
+	err := r.ParseMultipartForm(*utils.Cfg.FileSettings.MaxFileSize)
+	if err != nil {
+		return nil, model.NewAppError("addSamlCertificate", "api.admin.add_certificate.no_file.app_error", nil, err.Error(), http.StatusBadRequest)
+	}
+
+	m := r.MultipartForm
+
+	fileArray, ok := m.File["certificate"]
+	if !ok {
+		return nil, model.NewAppError("addSamlCertificate", "api.admin.add_certificate.no_file.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(fileArray) <= 0 {
+		return nil, model.NewAppError("addSamlCertificate", "api.admin.add_certificate.array.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	return fileArray[0], nil
+}
+
+func addSamlPublicCertificate(c *Context, w http.ResponseWriter, r *http.Request) {
+	if !app.SessionHasPermissionTo(c.Session, model.PERMISSION_MANAGE_SYSTEM) {
+		c.SetPermissionError(model.PERMISSION_MANAGE_SYSTEM)
+		return
+	}
+
+	fileData, err := parseSamlCertificateRequest(r)
+	if err != nil {
+		c.Err = err
+		return
+	}
+
+	if err := app.AddSamlPublicCertificate(fileData); err != nil {
+		c.Err = err
+		return
+	}
+	ReturnStatusOK(w)
+}
+
+func addSamlPrivateCertificate(c *Context, w http.ResponseWriter, r *http.Request) {
+	if !app.SessionHasPermissionTo(c.Session, model.PERMISSION_MANAGE_SYSTEM) {
+		c.SetPermissionError(model.PERMISSION_MANAGE_SYSTEM)
+		return
+	}
+
+	fileData, err := parseSamlCertificateRequest(r)
+	if err != nil {
+		c.Err = err
+		return
+	}
+
+	if err := app.AddSamlPrivateCertificate(fileData); err != nil {
+		c.Err = err
+		return
+	}
+	ReturnStatusOK(w)
+}
+
+func addSamlIdpCertificate(c *Context, w http.ResponseWriter, r *http.Request) {
+	if !app.SessionHasPermissionTo(c.Session, model.PERMISSION_MANAGE_SYSTEM) {
+		c.SetPermissionError(model.PERMISSION_MANAGE_SYSTEM)
+		return
+	}
+
+	fileData, err := parseSamlCertificateRequest(r)
+	if err != nil {
+		c.Err = err
+		return
+	}
+
+	if err := app.AddSamlIdpCertificate(fileData); err != nil {
+		c.Err = err
+		return
+	}
+	ReturnStatusOK(w)
+}
+
+func removeSamlPublicCertificate(c *Context, w http.ResponseWriter, r *http.Request) {
+	if !app.SessionHasPermissionTo(c.Session, model.PERMISSION_MANAGE_SYSTEM) {
+		c.SetPermissionError(model.PERMISSION_MANAGE_SYSTEM)
+		return
+	}
+
+	if err := app.RemoveSamlPublicCertificate(); err != nil {
+		c.Err = err
+		return
+	}
+
+	ReturnStatusOK(w)
+}
+
+func removeSamlPrivateCertificate(c *Context, w http.ResponseWriter, r *http.Request) {
+	if !app.SessionHasPermissionTo(c.Session, model.PERMISSION_MANAGE_SYSTEM) {
+		c.SetPermissionError(model.PERMISSION_MANAGE_SYSTEM)
+		return
+	}
+
+	if err := app.RemoveSamlPrivateCertificate(); err != nil {
+		c.Err = err
+		return
+	}
+
+	ReturnStatusOK(w)
+}
+
+func removeSamlIdpCertificate(c *Context, w http.ResponseWriter, r *http.Request) {
+	if !app.SessionHasPermissionTo(c.Session, model.PERMISSION_MANAGE_SYSTEM) {
+		c.SetPermissionError(model.PERMISSION_MANAGE_SYSTEM)
+		return
+	}
+
+	if err := app.RemoveSamlIdpCertificate(); err != nil {
+		c.Err = err
+		return
+	}
+
+	ReturnStatusOK(w)
+}
+
+func getSamlCertificateStatus(c *Context, w http.ResponseWriter, r *http.Request) {
+	if !app.SessionHasPermissionTo(c.Session, model.PERMISSION_MANAGE_SYSTEM) {
+		c.SetPermissionError(model.PERMISSION_MANAGE_SYSTEM)
+		return
+	}
+
+	status := app.GetSamlCertificateStatus()
+	w.Write([]byte(status.ToJson()))
+}