feat: Added detection via http headers (#93)

Author: dalferth

detectors/frameworks.json

@@ -14,7 +14,10 @@
       "js": "window.__NUXT__ || window.$nuxt || Boolean([...document.querySelectorAll('*')].find((el) => Boolean(el.__vue_app__?.$nuxt)))",
       "script": [
         "/_nuxt/"
-      ]
+      ],
+      "headers": {
+        "x-powered-by": "nuxt"
+      }
     }
   },
   "vuepress": {

detectors/vue.json

@@ -4,5 +4,8 @@
   "script": [
     "vue[.-]([\\d.]*\\d)[^/]*\\.js\\;version:\\1",
     "(?:/([\\d.]+))?/vue(?:\\.min)?\\.js\\;version:\\1"
-  ]
+  ],
+  "headers": {
+    "x-powered-by": "nuxt"
+  }
 }

src/detectors.js

@@ -93,7 +93,7 @@ exports.getNuxtModules = async function (context) {
   return Array.from(modules)
 }
 
-async function isMatching (detector, { originalHtml, html, scripts, page }) {
+async function isMatching (detector, { originalHtml, html, scripts, page, headers }) {
   // If we can detect technology from response html
   if (detector.originalHtml) {
     for (const pattern of parsePatterns(detector.originalHtml)) {
@@ -122,5 +122,13 @@ async function isMatching (detector, { originalHtml, html, scripts, page }) {
       } catch (e) {}
     }
   }
+  // If we can detect technology from headers
+  if (headers && detector.headers && typeof detector.headers === 'object' && Object.keys(detector.headers).length > 0) {
+    for (const header of Object.keys(headers)) {
+      if (Object.keys(detector.headers).find(key => key.toLowerCase() === header.toLowerCase())) {
+        if (detector.headers[header].toLowerCase() === headers[header].toLowerCase()) return true
+      }
+    }
+  }
   return false
 }

src/index.js

@@ -58,7 +58,7 @@ async function analyze (originalUrl, options = {}) {
   } else {
     domain = tldParser(url.origin).domain
   }
-  
+
   const page = await browser.newPage()
   const infos = {
     url: originalUrl,
@@ -131,7 +131,7 @@ async function analyze (originalUrl, options = {}) {
     const html = await page.content()
 
     // Use for detection
-    const context = { originalHtml, html, scripts, page }
+    const context = { originalHtml, html, scripts, page, headers }
 
     if (!(await hasVue(context))) {
       const error = new Error(`Vue is not detected on ${originalUrl}`)