tzssangglass commented on code in PR #7932: URL: https://github.com/apache/apisix/pull/7932#discussion_r974100264
########## apisix/plugins/cas-auth.lua: ########## @@ -0,0 +1,193 @@ +-- +---- Licensed to the Apache Software Foundation (ASF) under one or more +---- contributor license agreements. See the NOTICE file distributed with +---- this work for additional information regarding copyright ownership. +---- The ASF licenses this file to You under the Apache License, Version 2.0 +---- (the "License"); you may not use this file except in compliance with +---- the License. You may obtain a copy of the License at +---- +---- http://www.apache.org/licenses/LICENSE-2.0 +---- +---- Unless required by applicable law or agreed to in writing, software +---- distributed under the License is distributed on an "AS IS" BASIS, +---- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +---- See the License for the specific language governing permissions and +---- limitations under the License. +---- +local core = require("apisix.core") +local http = require("resty.http") +local ngx = ngx + +local CAS_REQUEST_URI = "CAS_REQUEST_URI" +local COOKIE_NAME = "CAS_SESSION" +local COOKIE_PARAMS = "; Path=/; HttpOnly" +local SESSION_LIFETIME = 3600 +local STORE_NAME = "cas_sessions" + +local store = ngx.shared[STORE_NAME] + + +local plugin_name = "cas-auth" +local schema = { + type = "object", + properties = { + idp_uri = {type = "string"}, + cas_callback_uri = {type = "string"}, + logout_uri = {type = "string"}, + }, + required = { + "idp_uri", "cas_callback_uri", "logout_uri" + } +} + +local _M = { + version = 0.1, + priority = 2597, + name = plugin_name, + schema = schema +} + +function _M.check_schema(conf) + return core.schema.check(schema, conf) +end + +local function uri_without_ticket(conf, ctx) + return ctx.var.scheme .. "://" .. ctx.var.host .. ":" .. + ctx.var.server_port .. conf.cas_callback_uri +end + +local function get_session_id(ctx) + return ctx.var["cookie_" .. COOKIE_NAME] +end + +local function set_our_cookie(name, val) + core.response.add_header("Set-Cookie", name .. "=" .. val .. COOKIE_PARAMS) +end + +local function first_access(conf, ctx) + local login_uri = conf.idp_uri .. "/login?" .. + ngx.encode_args({ service = uri_without_ticket(conf, ctx) }) + core.log.info("first access: ", login_uri, + ", cookie: ", ctx.var.http_cookie, ", request_uri: ", ctx.var.request_uri) + set_our_cookie(CAS_REQUEST_URI, ctx.var.request_uri) + core.response.set_header("Location", login_uri) + return ngx.HTTP_MOVED_TEMPORARILY +end + +local function with_session_id(conf, ctx, session_id) + -- does the cookie exist in our store? + local user = store:get(session_id); + core.log.info("ticket=", session_id, ", user=", user) + if user == nil then + set_our_cookie(COOKIE_NAME, "deleted; Max-Age=0") + return first_access(conf, ctx) + else + -- refresh the TTL + store:set(session_id, user, SESSION_LIFETIME) + end +end + +local function set_store_and_cookie(session_id, user) + -- place cookie into cookie store + local success, err, forcible = store:add(session_id, user, SESSION_LIFETIME) + if success then + if forcible then + core.log.info("CAS cookie store is out of memory") + end + set_our_cookie(COOKIE_NAME, session_id) + else + if err == "no memory" then + core.log.emerg("CAS cookie store is out of memory") + elseif err == "exists" then + core.log.error("Same CAS ticket validated twice, this should never happen!") + end Review Comment: log the origin `err`? -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
