Major changes to how IG works was made (#36)

- Updated Agent
- Logging in now works
- Instagram changed the way their data is being sent and handled

Author: aidv

instagram.js

@@ -15,12 +15,25 @@ module.exports = class Instagram {
   constructor(csrfToken, sessionId) {
     this.csrfToken = csrfToken
     this.sessionId = sessionId
-    this.userAgent = 'Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2900.1 Iron Safari/537.36'
+    this.userAgent = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36'
     this.userIdFollowers = {};
     this.timeoutForCounter = 300
     this.timeoutForCounterValue = 30000
     this.receivePromises = {}
     this.searchTypes = ['location', 'hashtag']
+
+    this.essentialValues = {
+      sessionid   : undefined,
+      ds_user_id  : undefined,
+      csrftoken   : undefined,
+      shbid       : undefined,
+      rur         : undefined,
+      mid         : undefined,
+      shbts       : undefined,
+      mcd         : undefined,
+      ig_cb       : undefined,
+      //urlgen      : undefined //this needs to be filled in according to my RE
+    };
   }
 
   /**
@@ -29,7 +42,35 @@ module.exports = class Instagram {
     * @return {Object} Promise
   */
   getUserDataByUsername(username) {
-    return fetch('https://www.instagram.com/' + username).then(res => res.text().then(function (data) {
+    
+    var cookie = ''
+
+    var keys = Object.keys(this.essentialValues)
+    for (var i = 0; i < keys.length; i++){
+      var key = keys[i];
+      cookie += key + '=' + this.essentialValues[key] + (i < keys.length - 1 ? '; ' : '')
+    }
+
+
+    var fetch_data = {
+      'method': 'get',
+      'headers':
+      {
+        'accept': 'text/html,application/xhtml+xml,application/xml;q0.9,image/webp,image/apng,*.*;q=0.8',
+        'accept-encoding': 'gzip, deflate, br',
+        'accept-langauge': 'en-US;q=0.9,en;q=0.8,es;q=0.7',
+        'cookie': cookie,
+
+        'origin': 'https://www.instagram.com',
+
+        'referer': 'https://www.instagram.com/',
+        'upgrade-insecure-requests': '1',
+        
+        'user-agent': this.userAgent,
+      }
+    }
+    
+    return fetch('https://www.instagram.com/' + username, fetch_data).then(res => res.text().then(function (data) {
       const regex = /window\._sharedData = (.*);<\/script>/;
       const match = regex.exec(data);
       if (typeof match[1] === 'undefined') {
@@ -166,20 +207,50 @@ module.exports = class Instagram {
         'method': 'get',
         'headers':
         {
-          'referer': 'https://www.instagram.com/',
+          'accept': 'text/html,application/xhtml+xml,application/xml;q0.9,image/webp,image/apng,*.*;q=0.8',
+          'accept-langauge': 'en-US;q=0.9,en;q=0.8,es;q=0.7',
+
           'origin': 'https://www.instagram.com',
+
+          'referer': 'https://www.instagram.com/',
+          'upgrade-insecure-requests': '1',
+          
           'user-agent': this.userAgent,
+
+          'cookie': 'ig_cb=1'
         }
-      }).then(
-        t => {
-          let cookies = t.headers._headers['set-cookie']
-          for (let i in cookies) {
-            if (!cookies[i].includes('csrftoken="";') && cookies[i].includes('csrftoken=')) {
-              return cookies[i].split(';')[0].replace('csrftoken=', '')
-            }
-          }
+      }).then( t => {
+        let cookies = t.headers._headers['set-cookie']
+
+        var keys = Object.keys(this.essentialValues)
+
+        for (var i = 0; i < keys.length; i++){
+          var key = keys[i];
+          if (!this.essentialValues[key])
+            for (let c in cookies)
+              if (cookies[c].includes(key) && !cookies[c].includes(key + '=""')){
+                var cookieValue = cookies[c].split(';')[0].replace(key + '=', '')
+                this.essentialValues[key] = cookieValue
+                break;
+              }
         }
-      ).catch(() =>
+        
+        return t.text();
+      }).then( html => {
+        var subStr = html;
+
+        var startStr = '<script type="text/javascript">window._sharedData = ';
+        var start = subStr.indexOf(startStr) + startStr.length;
+        subStr = subStr.substr(start, subStr.length);
+        
+        subStr = subStr.substr(0, subStr.indexOf('</script>') - 1);
+
+        var json = JSON.parse(subStr);
+
+        this.rollout_hash = json.rollout_hash;
+
+        return json.config.csrf_token;
+      }).catch(() =>
         console.log('Failed to get instagram csrf token')
       )
   }
@@ -190,38 +261,53 @@ module.exports = class Instagram {
     * @param {String} password
     * @return {Object} Promise
   */
-  auth(username, password) {
-    let form = new formData();
-    form.append('username', username)
-    form.append('password', password)
-    return fetch('https://www.instagram.com/accounts/login/ajax/',
-      {
-        'method': 'post',
-        'body': form,
-        'headers':
-        {
-          'referer': 'https://www.instagram.com/',
-          'origin': 'https://www.instagram.com',
-          'user-agent': this.userAgent,
-          'x-instagram-ajax': '1',
-          'x-requested-with': 'XMLHttpRequest',
-          'x-csrftoken': this.csrfToken,
-          cookie: 'csrftoken=' + this.csrfToken
-        }
-      }).then(
-        t => {
-          let cookies = t.headers._headers['set-cookie']
-          for (let i in cookies) {
-            if (!cookies[i].includes('sessionid=""') && cookies[i].includes('sessionid=')) {
-              console.log(cookies[i])
-              return cookies[i].split(';')[0].replace('sessionid=', '')
+ auth(username, password) {
+  var formdata = 'username=' + username + '&password=' + password + '&queryParams=%7B%7D'
+
+  var options = {
+    method  : 'POST',
+    body    : formdata,
+    headers :
+    {
+      'accept'            : '*/*',
+      'accept-encoding'   : 'gzip, deflate, br',
+      'accept-language'   : 'sv,en-US;q=0.9,en;q=0.8,es;q=0.7',
+      'content-length'    : formdata.length,
+      'content-type'      : 'application/x-www-form-urlencoded',
+      'cookie'            : 'ig_cb=' + this.essentialValues.ig_cb,
+      'origin'            : 'https://www.instagram.com',
+      'referer'           : 'https://www.instagram.com/',
+      'user-agent'        : this.userAgent,
+      'x-csrftoken'       : this.csrfToken,
+      'x-instagram-ajax'  : this.rollout_hash,
+      'x-requested-with'  : 'XMLHttpRequest',
+      
+    }
+  }
+
+  return fetch('https://www.instagram.com/accounts/login/ajax/', options).then(
+  t => {
+      let cookies = t.headers._headers['set-cookie']
+       
+      var keys = Object.keys(this.essentialValues)
+
+      for (var i = 0; i < keys.length; i++){
+        var key = keys[i];
+        if (!this.essentialValues[key])
+          for (let c in cookies) {
+            if (cookies[c].includes(key) && !cookies[c].includes(key + '=""')){
+              var cookieValue = cookies[c].split(';')[0].replace(key + '=', '')
+              this.essentialValues[key] = cookieValue
+              break;
             }
           }
-        }
-      ).catch(() =>
-        console.log('Instagram authentication failed')
-      )
-  }
+      }
+
+      return this.essentialsValues.sessionId;
+    }).catch(() =>
+      console.log('Instagram authentication failed')
+    )
+}
 
   /**
       * Registration for instagram, returning true or false