1 files changed, 23 insertions, 0 deletions
diff --git a/api4/context.go b/api4/context.go
index 847a8d55f..f492f2b99 100644
--- a/api4/context.go
+++ b/api4/context.go
@@ -382,6 +382,17 @@ func (c *Context) RequirePostId() *Context {
 	return c
 }
 
+func (c *Context) RequireAppId() *Context {
+	if c.Err != nil {
+		return c
+	}
+
+	if len(c.Params.AppId) != 26 {
+		c.SetInvalidUrlParam("app_id")
+	}
+	return c
+}
+
 func (c *Context) RequireFileId() *Context {
 	if c.Err != nil {
 		return c
@@ -464,6 +475,18 @@ func (c *Context) RequireCategory() *Context {
 	return c
 }
 
+func (c *Context) RequireService() *Context {
+	if c.Err != nil {
+		return c
+	}
+
+	if len(c.Params.Service) == 0 {
+		c.SetInvalidUrlParam("service")
+	}
+
+	return c
+}
+
 func (c *Context) RequirePreferenceName() *Context {
 	if c.Err != nil {
 		return c