[MM-58378] Prevent prepackaged playbook v2 from upgrading on servers without enterprise license (#27335)

* add check for playbooks v2

* add new license helper

---------

Co-authored-by: Mattermost Build <build@mattermost.com>

server/channels/app/plugin.go

@@ -964,6 +964,8 @@ func (ch *Channels) processPrepackagedPlugins(prepackagedPluginsDir string) erro
 	return nil
 }
 
+var SemVerV2 = semver.MustParse("2.0.0")
+
 // processPrepackagedPlugin will return the prepackaged plugin metadata and will also
 // install the prepackaged plugin if it had been previously enabled and AutomaticPrepackagedPlugins is true.
 func (ch *Channels) processPrepackagedPlugin(pluginPath *pluginSignaturePath) (*plugin.PrepackagedPlugin, error) {
@@ -990,6 +992,21 @@ func (ch *Channels) processPrepackagedPlugin(pluginPath *pluginSignaturePath) (*
 
 	logger = logger.With(mlog.String("plugin_id", plugin.Manifest.Id))
 
+	if plugin.Manifest.Id == model.PluginIdPlaybooks {
+		version, err := semver.Parse(plugin.Manifest.Version)
+		if err != nil {
+			return nil, errors.Wrapf(err, "Unable to verify prepackaged playbooks version")
+		}
+		if version.GTE(SemVerV2) {
+			license := ch.License()
+			canUsePlaybookv2 := license != nil && license.IsE20OrEnterprise()
+			if !canUsePlaybookv2 {
+				logger.Info("Skip installing prepackaged playbooks because the license does not allow it")
+				return plugin, nil
+			}
+		}
+	}
+
 	// Skip installing the plugin at all if automatic prepackaged plugins is disabled
 	if !*ch.cfgSvc.Config().PluginSettings.AutomaticPrepackagedPlugins {
 		logger.Info("Not installing prepackaged plugin: automatic prepackaged plugins disabled")

server/public/model/license.go

@@ -385,6 +385,11 @@ func (l *License) HasSharedChannels() bool {
 		l.SkuShortName == LicenseShortSkuEnterprise
 }
 
+// IsE20OrEnterprise returns true when the license is for E20 or Enterprise.
+func (l *License) IsE20OrEnterprise() bool {
+	return l.SkuShortName == LicenseShortSkuE20 || l.SkuShortName == LicenseShortSkuEnterprise
+}
+
 // NewTestLicense returns a license that expires in the future and has the given features.
 func NewTestLicense(features ...string) *License {
 	ret := &License{