ircd::resource: Stub default/builtin method handlers for OPTIONS and HEAD.

include/ircd/resource/resource.h

@@ -37,8 +37,12 @@ struct ircd::resource
 	std::unique_ptr<const struct opts> opts;
 	std::map<string_view, method *> methods;
 	unique_const_iterator<decltype(resources)> resources_it;
+	std::unique_ptr<method> default_method_head;
+	std::unique_ptr<method> default_method_options;
 
 	string_view allow_methods_list(const mutable_buffer &buf) const;
+	response handle_options(client &, const request &) const;
+	response handle_head(client &, const request &) const;
 
   public:
 	method &operator[](const string_view &name) const;
@@ -59,7 +63,9 @@ struct ircd::resource
 enum ircd::resource::flag
 :uint
 {
-	DIRECTORY  = 0x01,
+	DIRECTORY          = 0x01,
+	OVERRIDE_HEAD      = 0x02,
+	OVERRIDE_OPTIONS   = 0x04,
 };
 
 struct ircd::resource::opts

ircd/resource.cc

@@ -139,6 +139,32 @@ ircd::resource::resource(const string_view &path,
 		resources, iit.first
 	};
 }()}
+,default_method_head{[this, &opts]
+() -> std::unique_ptr<method>
+{
+	if(opts.flags & flag::OVERRIDE_HEAD)
+		return {};
+
+	auto handler
+	{
+		std::bind(&resource::handle_head, this, ph::_1, ph::_2)
+	};
+
+	return std::make_unique<method>(*this, "HEAD", std::move(handler));
+}()}
+,default_method_options{[this, &opts]
+() -> std::unique_ptr<method>
+{
+	if(opts.flags & flag::OVERRIDE_OPTIONS)
+		return {};
+
+	auto handler
+	{
+		std::bind(&resource::handle_options, this, ph::_1, ph::_2)
+	};
+
+	return std::make_unique<method>(*this, "OPTIONS", std::move(handler));
+}()}
 {
 	log::debug
 	{
@@ -181,6 +207,28 @@ catch(const std::out_of_range &e)
 	};
 }
 
+ircd::resource::response
+ircd::resource::handle_head(client &client,
+                            const request &request)
+const
+{
+	return response
+	{
+		client, http::METHOD_NOT_ALLOWED
+	};
+}
+
+ircd::resource::response
+ircd::resource::handle_options(client &client,
+                               const request &request)
+const
+{
+	return response
+	{
+		client, http::METHOD_NOT_ALLOWED
+	};
+}
+
 ircd::string_view
 ircd::resource::allow_methods_list(const mutable_buffer &buf)
 const