fix(server side rendering): Fixed issues with server side rendering for alerting & for auth proxy scenarios, fixes #6115, fixes #5906

pkg/middleware/render_auth.go

@@ -0,0 +1,55 @@
+package middleware
+
+import (
+	"sync"
+
+	m "github.com/grafana/grafana/pkg/models"
+	"github.com/grafana/grafana/pkg/util"
+)
+
+var renderKeysLock sync.Mutex
+var renderKeys map[string]*m.SignedInUser = make(map[string]*m.SignedInUser)
+
+func initContextWithRenderAuth(ctx *Context) bool {
+	key := ctx.GetCookie("renderKey")
+	if key == "" {
+		return false
+	}
+
+	renderKeysLock.Lock()
+	defer renderKeysLock.Unlock()
+
+	if renderUser, exists := renderKeys[key]; !exists {
+		ctx.JsonApiErr(401, "Invalid Render Key", nil)
+		return true
+	} else {
+
+		ctx.IsSignedIn = true
+		ctx.SignedInUser = renderUser
+		ctx.IsRenderCall = true
+		return true
+	}
+}
+
+type renderContextFunc func(key string) (string, error)
+
+func AddRenderAuthKey(orgId int64) string {
+	renderKeysLock.Lock()
+
+	key := util.GetRandomString(32)
+
+	renderKeys[key] = &m.SignedInUser{
+		OrgId:   orgId,
+		OrgRole: m.ROLE_VIEWER,
+	}
+
+	renderKeysLock.Unlock()
+
+	return key
+}
+
+func RemoveRenderAuthKey(key string) {
+	renderKeysLock.Lock()
+	delete(renderKeys, key)
+	renderKeysLock.Unlock()
+}