diff options
Diffstat (limited to 'plugins/mod_http.lua')
| -rw-r--r-- | plugins/mod_http.lua | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/plugins/mod_http.lua b/plugins/mod_http.lua index a1d409bd..829c2d02 100644 --- a/plugins/mod_http.lua +++ b/plugins/mod_http.lua @@ -14,6 +14,7 @@ local moduleapi = require "core.moduleapi"; local url_parse = require "socket.url".parse; local url_build = require "socket.url".build; local normalize_path = require "util.http".normalize_path; +local set = require "util.set"; local server = require "net.http.server"; @@ -22,6 +23,11 @@ server.set_default_host(module:get_option_string("http_default_host")); server.set_option("body_size_limit", module:get_option_number("http_max_content_size")); server.set_option("buffer_size_limit", module:get_option_number("http_max_buffer_size")); +-- CORS settigs +local opt_methods = module:get_option_set("access_control_allow_methods", { "GET", "OPTIONS" }); +local opt_headers = module:get_option_set("access_control_allow_headers", { "Content-Type" }); +local opt_max_age = module:get_option_number("access_control_max_age", 2 * 60 * 60); + local function get_http_event(host, app_path, key) local method, path = key:match("^(%S+)%s+(.+)$"); if not method then -- No path specified, default to "" (base path) @@ -83,6 +89,13 @@ function moduleapi.http_url(module, app_name, default_path) return "http://disabled.invalid/"; end +local function apply_cors_headers(response, methods, headers, max_age, origin) + response.headers.access_control_allow_methods = tostring(methods); + response.headers.access_control_allow_headers = tostring(headers); + response.headers.access_control_max_age = tostring(max_age) + response.headers.access_control_allow_origin = origin or "*"; +end + function module.add_host(module) local host = module.host; if host ~= "*" then @@ -101,9 +114,27 @@ function module.add_host(module) end apps[app_name] = apps[app_name] or {}; local app_handlers = apps[app_name]; + + local app_methods = opt_methods; + + local function cors_handler(event_data) + local request, response = event_data.request, event_data.response; + apply_cors_headers(response, app_methods, opt_headers, opt_max_age, request.headers.origin); + end + + local function options_handler(event_data) + cors_handler(event_data); + return ""; + end + for key, handler in pairs(event.item.route or {}) do local event_name = get_http_event(host, app_path, key); if event_name then + local method = event_name:match("^%S+"); + if not app_methods:contains(method) then + app_methods = app_methods + set.new{ method }; + end + local options_event_name = event_name:gsub("^%S+", "OPTIONS"); if type(handler) ~= "function" then local data = handler; handler = function () return data; end @@ -121,6 +152,8 @@ function module.add_host(module) if not app_handlers[event_name] then app_handlers[event_name] = handler; module:hook_object_event(server, event_name, handler); + module:hook_object_event(server, event_name, cors_handler, 1); + module:hook_object_event(server, options_event_name, options_handler, -1); else module:log("warn", "App %s added handler twice for '%s', ignoring", app_name, event_name); end |