AccessControl: frontend changes for adding FGAC to licensing (#39484)

* refactor licenseURL function to use context and export permission evaluation fction

* remove provisioning file

* refactor licenseURL to take in a bool to avoid circular dependencies

* remove function for appending nav link, as it was only used once and move the function to create admin node

* better argument names

* create a function for permission checking

* extend permission checking when displaying server stats

* enable the use of enterprise access control actions when evaluating permissions

* import ordering

* move licensing FGAC action definitions to models package to allow access from oss

* move evaluatePermissions for routes to context serve

* change permission evaluator to take in more permissions

* move licensing FGAC actions again to appease wire

* avoid index out of bounds issue in case no children are passed in when creating server admin node

* simplify syntax for permission checking

Co-authored-by: Alex Khomenko <Clarity-89@users.noreply.github.com>

* update loading state for server stats

* linting

* more linting

* fix test

* fix a frontend test

* update "licensing.reports:read" action naming

* UI doesn't allow reading only licensing reports and not the rest of licensing info

Co-authored-by: Alex Khomenko <Clarity-89@users.noreply.github.com>

pkg/api/frontendsettings.go

@@ -4,16 +4,15 @@ import (
 	"errors"
 	"strconv"
 
-	"github.com/grafana/grafana/pkg/models"
-	"github.com/grafana/grafana/pkg/tsdb/grafanads"
-
-	"github.com/grafana/grafana/pkg/components/simplejson"
-	"github.com/grafana/grafana/pkg/util"
-
 	"github.com/grafana/grafana/pkg/bus"
+	"github.com/grafana/grafana/pkg/components/simplejson"
 	"github.com/grafana/grafana/pkg/infra/log"
+	"github.com/grafana/grafana/pkg/models"
 	"github.com/grafana/grafana/pkg/plugins"
+	"github.com/grafana/grafana/pkg/services/accesscontrol"
 	"github.com/grafana/grafana/pkg/setting"
+	"github.com/grafana/grafana/pkg/tsdb/grafanads"
+	"github.com/grafana/grafana/pkg/util"
 )
 
 func (hs *HTTPServer) getFSDataSources(c *models.ReqContext, enabledPlugins *plugins.EnabledPlugins) (map[string]interface{}, error) {
@@ -196,6 +195,8 @@ func (hs *HTTPServer) getFrontendSettingsMap(c *models.ReqContext) (map[string]i
 		buildstamp = 0
 	}
 
+	hasAccess := accesscontrol.HasAccess(hs.AccessControl, c)
+
 	jsonObj := map[string]interface{}{
 		"defaultDatasource":                   defaultDS,
 		"datasources":                         dataSources,
@@ -247,7 +248,7 @@ func (hs *HTTPServer) getFrontendSettingsMap(c *models.ReqContext) (map[string]i
 			"hasValidLicense": hs.License.HasValidLicense(),
 			"expiry":          hs.License.Expiry(),
 			"stateInfo":       hs.License.StateInfo(),
-			"licenseUrl":      hs.License.LicenseURL(c.SignedInUser),
+			"licenseUrl":      hs.License.LicenseURL(hasAccess(accesscontrol.ReqGrafanaAdmin, accesscontrol.LicensingPageReaderAccess)),
 			"edition":         hs.License.Edition(),
 		},
 		"featureToggles":                   hs.Cfg.FeatureToggles,