Implement client config/license endpoints for APIv4 (#5867)

4 files changed, 131 insertions, 1 deletions

diff --git a/api4/system.go b/api4/system.go
index 972d526da..098f7e4b7 100644
--- a/api4/system.go
+++ b/api4/system.go
@@ -17,8 +17,12 @@ func InitSystem() {
 
 	BaseRoutes.System.Handle("/ping", ApiHandler(getSystemPing)).Methods("GET")
 	BaseRoutes.ApiRoot.Handle("/config", ApiSessionRequired(getConfig)).Methods("GET")
-	BaseRoutes.ApiRoot.Handle("/config/reload", ApiSessionRequired(configReload)).Methods("POST")
 	BaseRoutes.ApiRoot.Handle("/config", ApiSessionRequired(updateConfig)).Methods("PUT")
+	BaseRoutes.ApiRoot.Handle("/config/reload", ApiSessionRequired(configReload)).Methods("POST")
+	BaseRoutes.ApiRoot.Handle("/config/client", ApiHandler(getClientConfig)).Methods("GET")
+
+	BaseRoutes.ApiRoot.Handle("/license/client", ApiHandler(getClientLicense)).Methods("GET")
+
 	BaseRoutes.ApiRoot.Handle("/audits", ApiSessionRequired(getAudits)).Methods("GET")
 	BaseRoutes.ApiRoot.Handle("/email/test", ApiSessionRequired(testEmail)).Methods("POST")
 	BaseRoutes.ApiRoot.Handle("/database/recycle", ApiSessionRequired(databaseRecycle)).Methods("POST")
@@ -155,3 +159,41 @@ func getLogs(c *Context, w http.ResponseWriter, r *http.Request) {
 
 	w.Write([]byte(model.ArrayToJson(lines)))
 }
+
+func getClientConfig(c *Context, w http.ResponseWriter, r *http.Request) {
+	format := r.URL.Query().Get("format")
+
+	if format == "" {
+		c.Err = model.NewAppError("getClientConfig", "api.config.client.old_format.app_error", nil, "", http.StatusNotImplemented)
+		return
+	}
+
+	if format != "old" {
+		c.SetInvalidParam("format")
+		return
+	}
+
+	w.Write([]byte(model.MapToJson(utils.ClientCfg)))
+}
+
+func getClientLicense(c *Context, w http.ResponseWriter, r *http.Request) {
+	format := r.URL.Query().Get("format")
+
+	if format == "" {
+		c.Err = model.NewAppError("getClientLicense", "api.license.client.old_format.app_error", nil, "", http.StatusNotImplemented)
+		return
+	}
+
+	if format != "old" {
+		c.SetInvalidParam("format")
+		return
+	}
+
+	etag := utils.GetClientLicenseEtag(true)
+	if HandleEtag(etag, "Get Client License", w, r) {
+		return
+	}
+
+	w.Header().Set(model.HEADER_ETAG_SERVER, etag)
+	w.Write([]byte(model.MapToJson(utils.GetSanitizedClientLicense())))
+}
diff --git a/api4/system_test.go b/api4/system_test.go
index 289a41907..b2b5d3f43 100644
--- a/api4/system_test.go
+++ b/api4/system_test.go
@@ -1,6 +1,7 @@
 package api4
 
 import (
+	"net/http"
 	"strings"
 	"testing"
 
@@ -129,6 +130,58 @@ func TestUpdateConfig(t *testing.T) {
 	}
 }
 
+func TestGetOldClientConfig(t *testing.T) {
+	th := Setup().InitBasic().InitSystemAdmin()
+	defer TearDown()
+	Client := th.Client
+
+	config, resp := Client.GetOldClientConfig("")
+	CheckNoError(t, resp)
+
+	if len(config["Version"]) == 0 {
+		t.Fatal("config not returned correctly")
+	}
+
+	Client.Logout()
+
+	_, resp = Client.GetOldClientConfig("")
+	CheckNoError(t, resp)
+
+	if _, err := Client.DoApiGet("/config/client", ""); err == nil || err.StatusCode != http.StatusNotImplemented {
+		t.Fatal("should have errored with 501")
+	}
+
+	if _, err := Client.DoApiGet("/config/client?format=junk", ""); err == nil || err.StatusCode != http.StatusBadRequest {
+		t.Fatal("should have errored with 400")
+	}
+}
+
+func TestGetOldClientLicense(t *testing.T) {
+	th := Setup().InitBasic().InitSystemAdmin()
+	defer TearDown()
+	Client := th.Client
+
+	license, resp := Client.GetOldClientLicense("")
+	CheckNoError(t, resp)
+
+	if len(license["IsLicensed"]) == 0 {
+		t.Fatal("license not returned correctly")
+	}
+
+	Client.Logout()
+
+	_, resp = Client.GetOldClientLicense("")
+	CheckNoError(t, resp)
+
+	if _, err := Client.DoApiGet("/license/client", ""); err == nil || err.StatusCode != http.StatusNotImplemented {
+		t.Fatal("should have errored with 501")
+	}
+
+	if _, err := Client.DoApiGet("/license/client?format=junk", ""); err == nil || err.StatusCode != http.StatusBadRequest {
+		t.Fatal("should have errored with 400")
+	}
+}
+
 func TestGetAudits(t *testing.T) {
 	th := Setup().InitBasic().InitSystemAdmin()
 	defer TearDown()
diff --git a/i18n/en.json b/i18n/en.json
index a48cc2cb0..0589d22e1 100644
--- a/i18n/en.json
+++ b/i18n/en.json
@@ -48,6 +48,14 @@
     "translation": "September"
   },
   {
+    "id": "api.config.client.old_format.app_error",
+    "translation": "New format for the client configuration is not supported yet. Please specify format=old in the query string."
+  },
+  {
+    "id": "api.license.client.old_format.app_error",
+    "translation": "New format for the client license is not supported yet. Please specify format=old in the query string."
+  },
+  {
     "id": "api.admin.add_certificate.no_file.app_error",
     "translation": "No file under 'certificate' in request"
   },
diff --git a/model/client4.go b/model/client4.go
index e1bd70878..6306039ff 100644
--- a/model/client4.go
+++ b/model/client4.go
@@ -130,6 +130,10 @@ func (c *Client4) GetConfigRoute() string {
 	return fmt.Sprintf("/config")
 }
 
+func (c *Client4) GetLicenseRoute() string {
+	return fmt.Sprintf("/license")
+}
+
 func (c *Client4) GetPostRoute(postId string) string {
 	return fmt.Sprintf(c.GetPostsRoute()+"/%v", postId)
 }
@@ -1344,6 +1348,7 @@ func (c *Client4) GetPing() (bool, *Response) {
 	}
 }
 
+// TestEmail will attempt to connect to the configured SMTP server.
 func (c *Client4) TestEmail() (bool, *Response) {
 	if r, err := c.DoApiPost(c.GetTestEmailRoute(), ""); err != nil {
 		return false, &Response{StatusCode: r.StatusCode, Error: err}
@@ -1373,6 +1378,28 @@ func (c *Client4) ReloadConfig() (bool, *Response) {
 	}
 }
 
+// GetOldClientConfig will retrieve the parts of the server configuration needed by the
+// client, formatted in the old format.
+func (c *Client4) GetOldClientConfig(etag string) (map[string]string, *Response) {
+	if r, err := c.DoApiGet(c.GetConfigRoute()+"/client?format=old", etag); err != nil {
+		return nil, &Response{StatusCode: r.StatusCode, Error: err}
+	} else {
+		defer closeBody(r)
+		return MapFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetOldClientLicense will retrieve the parts of the server license needed by the
+// client, formatted in the old format.
+func (c *Client4) GetOldClientLicense(etag string) (map[string]string, *Response) {
+	if r, err := c.DoApiGet(c.GetLicenseRoute()+"/client?format=old", etag); err != nil {
+		return nil, &Response{StatusCode: r.StatusCode, Error: err}
+	} else {
+		defer closeBody(r)
+		return MapFromJson(r.Body), BuildResponse(r)
+	}
+}
+
 // DatabaseRecycle will recycle the connections. Discard current connection and get new one.
 func (c *Client4) DatabaseRecycle() (bool, *Response) {
 	if r, err := c.DoApiPost(c.GetDatabaseRoute()+"/recycle", ""); err != nil {