From dee77c459a929d7e0041fae38176b71248a9ff9c Mon Sep 17 00:00:00 2001
From: BoHong Li
Date: Wed, 12 Apr 2017 05:30:04 +0800
Subject: refactor(app.js): Extract middleware to module

extract check URi is valid, redirect without trailing slashes
---
 lib/web/middleware/checkURiValid.js                  | 14 ++++++++++++++
 lib/web/middleware/redirectWithoutTrailingSlashes.js | 17 +++++++++++++++++
 2 files changed, 31 insertions(+)
 create mode 100644 lib/web/middleware/checkURiValid.js
 create mode 100644 lib/web/middleware/redirectWithoutTrailingSlashes.js

(limited to 'lib')

diff --git a/lib/web/middleware/checkURiValid.js b/lib/web/middleware/checkURiValid.js
new file mode 100644
index 00000000..88065e79
--- /dev/null
+++ b/lib/web/middleware/checkURiValid.js
@@ -0,0 +1,14 @@
+'use strict'
+
+const logger = require('../../logger')
+const response = require('../../response')
+
+module.exports = function (req, res, next) {
+  try {
+    decodeURIComponent(req.path)
+  } catch (err) {
+    logger.error(err)
+    return response.errorBadRequest(res)
+  }
+  next()
+}
diff --git a/lib/web/middleware/redirectWithoutTrailingSlashes.js b/lib/web/middleware/redirectWithoutTrailingSlashes.js
new file mode 100644
index 00000000..fbaba617
--- /dev/null
+++ b/lib/web/middleware/redirectWithoutTrailingSlashes.js
@@ -0,0 +1,17 @@
+'use strict'
+
+const config = require('../../config')
+
+module.exports = function (req, res, next) {
+  if (req.method === 'GET' && req.path.substr(-1) === '/' && req.path.length > 1) {
+    const queryString = req.url.slice(req.path.length)
+    const urlPath = req.path.slice(0, -1)
+    let serverURL = config.serverurl
+    if (config.urlpath) {
+      serverURL = serverURL.slice(0, -(config.urlpath.length + 1))
+    }
+    res.redirect(301, serverURL + urlPath + queryString)
+  } else {
+    next()
+  }
+}
-- 
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