added auth node to verify/decode idToken JWT sent from clients

README.md

@@ -194,9 +194,22 @@ input:
          }
     }
 
-output: An array of headers returned by the operation if all went well. These are mostly useless but at least a confirmation of success.    
+output: An array of headers returned by the operation if all went well. These are mostly useless but at least a confirmation of success. Dcoumentation and problem-solving hints can be found here; (https://firebase.google.com/docs/auth/admin/verify-id-tokens). Note that you need to explicitly get the correct id token in the client and send it to the back-end. 
 
 # Auth nodes
 
-TBD
+## verify-idtoken
+Decrypts a firebase client SDK JWT idToken into a user object.
+
+input:  
+
+    {
+        "payload": "eyJhbGciOiJSUz....fMrAUdK"
+    }
+
+output:
+
+    {
+        "payload": { "name": "Foo Foobarson", "picture": "https://...", ..}
+    }
 

auth/verify-idtoken.html

@@ -0,0 +1,56 @@
+<script type="text/javascript">
+    RED.nodes.registerType('verify-idtoken',{
+  
+      category: 'firebase-admin',
+      color: '#a6bbcf',
+      defaults: {
+        name: {value:""},
+        cred: {value: "", type: 'firebase-config'}
+      },
+      inputs:1,
+      outputs:1,
+      icon: "firebase-auth.png",
+      label: function() {
+        return this.name||"verify-idtoken";
+      },
+  
+      oneditsave: function() {
+        let type = $('#apitype-select').val()
+        console.log('type is set to '+type)
+  
+      },
+  
+      oneditprepare: function() {
+        $('#apitype-select').change(function () {
+          $("#node-input-apitype").val($(this).find('option:selected').val())
+        });
+        $("#apitype-select").val($("#node-input-apitype").val())
+        $('#apitype-select').trigger('change');
+      }
+    });
+  
+  
+  </script>
+  
+  <script type="text/x-red" data-template-name="verify-idtoken">
+      <div class="form-row">
+          <label for="node-input-name"><i class="icon-tag"></i> Name</label>
+          <input type="text" id="node-input-name" placeholder="Name">
+      </div>
+  
+      <div class="form-row">
+          <label for="node-input-cred"><i class="icon-tag"></i> Credentials</label>
+          <input type="text" id="node-input-cred" placeholder="Name">
+      </div>
+  
+  </script>
+  
+  <script type="text/x-red" data-help-name="verify-idtoken">
+      <p>A node that wraps the verify-idtoken API from the firebase-admin SDK</p>
+      Reoslved a given JWT token in payload as a user object for the current project (that the configured credentials is pointing to)
+  <p>
+  input: {"payload": "......JWT......"}
+  <p>
+  output: The decoded User object for the given JWT idToken
+  
+  </script>

auth/verify-idtoken.js

@@ -0,0 +1,41 @@
+// "eyJhbGciOiJSUzI1NiIsImtpZCI6Ijc0NGY2MGU5ZmI1MTVhMmEwMWMxMWViZWIyMjg3MTI4NjA1NDA3MTEiLCJ0eXAiOiJKV1QifQ.eyJpc3MiOiJhY2NvdW50cy5nb29nbGUuY29tIiwiYXpwIjoiOTczNDA4MDM4MzUwLWI2aGNoN3NvamliNmkxNjZtN3BtOWtmcDNvaHJoMzRrLmFwcHMuZ29vZ2xldXNlcmNvbnRlbnQuY29tIiwiYXVkIjoiOTczNDA4MDM4MzUwLWI2aGNoN3NvamliNmkxNjZtN3BtOWtmcDNvaHJoMzRrLmFwcHMuZ29vZ2xldXNlcmNvbnRlbnQuY29tIiwic3ViIjoiMTA5ODI2MDk5NjU1NTU2Mjk4ODI0IiwiZW1haWwiOiJwc3ZlbnNzb25AZ21haWwuY29tIiwiZW1haWxfdmVyaWZpZWQiOnRydWUsImF0X2hhc2giOiJmVkpiSWRzMFFuVlBWbm50VUtoSmFnIiwiaWF0IjoxNTk2OTY1OTMxLCJleHAiOjE1OTY5Njk1MzF9.Rq8bsj-RlcMdVjk2UuJrUykyJcRcaTRohQD788lCigIVxLedxIJ5rZRndRVzSTUmX2n_sgCdtiFLN2w16KHy5v2053fNXvlyEuR4t1fctt_LU-OygLGW4qeSPEWonu7zBmhy2aaJBHnx0NzqRbCYewm0zVrI_BEgju-OvJAlH5pud9Ycs7o7d6NaJsJp0JW3bEcz0bgETA2jWlYIR3ZeQSRxYcjwTZ2OhbocMEWYVFVoTF8n0PVlFe21cZs3RfA2KWfuVvwvrB2BGku6rkVANoT8UJKkhLP81NipgPzIowui72O5pbCCm5senj5D_VMh74NmptHSLAKTGHv36EzzPA"
+
+
+module.exports = function (RED) {
+    function FirebaseAdmin(config) {
+        RED.nodes.createNode(this, config);
+        var node = this;
+
+        if (config.cred) {
+            let c = RED.nodes.getNode(config.cred)
+            this.admin = c.admin
+        }
+
+        node.on('input', function (msg) {
+            if (msg && msg.payload) {
+                console.log('verify-idtoken got input')
+                console.dir(msg)
+                const idtoken = msg.payload.idtoken
+                try {
+                    this.admin.auth().verifyIdToken(idtoken)
+                        .then(function (decodedToken) {
+                            console.log('verify-idtoken got result:')
+                            console.dir(decodedToken)
+                            this.status({ fill: "green", shape: "ring", text: '' });
+                            node.send({ payload: decodedToken })
+                        }.bind(this)).catch(function (error) {
+                            console.log('verify-idtoken caught an exception!')
+                            console.dir(error)
+                            this.status({ fill: "red", shape: "ring", text: error.errorInfo.message });
+                        }.bind(this));
+                } catch (ex) {
+                    this.status({ fill: "red", shape: "ring", text: ex.code });
+                }
+
+            }
+        }.bind(this));
+
+
+    }
+    RED.nodes.registerType("verify-idtoken", FirebaseAdmin);
+}

firebase-config.html

@@ -20,7 +20,7 @@
     </div>
     <div class="form-row">
         <label for="node-config-input-cred"><i class="icon-bookmark"></i> Firebase Service Account Credentials</label>
-        <input type="text" id="node-config-input-cred">
+        <input type="textarea" rows="10" id="node-config-input-cred">
     </div>
     <div class="form-row">
         <label for="node-config-input-dburl"><i class="icon-bookmark"></i> Firebase Database URL</label>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "node-red-contrib-firebase-admin",
-  "version": "1.1.23",
+  "version": "1.1.24",
   "description": "A node-red module that wraps the server-side  admin SDK of firebase, firestore, et.c.",
   "main": "index.js",
   "scripts": {
@@ -16,7 +16,8 @@
     "node-red",
     "firebase",
     "firestore",
-    "cloud storage"
+    "cloud storage",
+    "auth"
   ],
   "bugs": {
     "url": "https://github.com/psvensson/node-red-contrib-firebase-admin/issues"
@@ -40,7 +41,8 @@
       "storage-read": "storage/storage-read.js",
       "storage-write": "storage/storage-write.js",
       "storage-list": "storage/storage-list.js",
-      "storage-delete": "storage/storage-delete.js"
+      "storage-delete": "storage/storage-delete.js",
+      "verify-idtoken": "auth/verify-idtoken.js"
     }
   },
   "dependencies": {