Fixes #242: autodetect key type when pasting it.

Author: sebadoom

js/app.js

@@ -395,6 +395,8 @@ FaFp+DyAe+b4nDwuJaW2LURbr8AEZga7oQj0uYxcYw==\n\
           }
         }
 
+        validateKey.apply($('textarea[name="public-key"]'));
+
         callback();
       } catch(e) {
         console.error(e);
@@ -642,16 +644,17 @@ FaFp+DyAe+b4nDwuJaW2LURbr8AEZga7oQj0uYxcYw==\n\
 
   function validateKey() {
     var $textarea = $(this);
-    var valid;
+    var valid = window.isValidKey($textarea.val());
 
-    if($textarea.prop('name') === 'public-key') {
+    /*if($textarea.prop('name') === 'public-key') {
       valid = /-----BEGIN (PUBLIC KEY|CERTIFICATE)-----(.|\n)*-----END (PUBLIC KEY|CERTIFICATE)-----/.test($textarea.val());
     } else {
       valid = /-----BEGIN RSA PRIVATE KEY-----(.|\n)*-----END RSA PRIVATE KEY-----/.test($textarea.val());
-    }
+    }*/
 
-    if (valid) {
+    if (valid.valid) {
       $textarea.removeClass('error');
+      $textarea.val(valid.key);
     } else {
       $textarea.addClass('error');
     }
@@ -670,7 +673,10 @@ FaFp+DyAe+b4nDwuJaW2LURbr8AEZga7oQj0uYxcYw==\n\
     updateSignature();
   });
 
-  $('.jwt-signature textarea[name="public-key"]').on('input', updateSignature);
+  $('.jwt-signature textarea[name="public-key"]').on('input', function() {
+    validateKey.apply(this);
+    updateSignature();
+  });
   $('.jwt-signature textarea[name="private-key"]').on('input', function () {
     validateKey.apply(this);
     refreshTokenEditor();

js/jwt.js

@@ -167,3 +167,43 @@ window.verify = function (algorithm, value, key, isSecretBase64Encoded) {
 
   return {result: result, error: error};
 };
+
+window.isValidKey = function(key) {
+  // Four tries: no header, header for cert, header for pub key,
+  // header for priv key
+
+  var headers = [{
+    prologue: '',
+    epilogue: ''
+  },{
+    prologue: '-----BEGIN CERTIFICATE-----\n',
+    epilogue: '-----END CERTIFICATE-----\n'
+  }, {
+    prologue: '-----BEGIN PUBLIC KEY-----\n',
+    epilogue: '-----END PUBLIC KEY-----\n'
+  }, {
+    prologue: '-----BEGIN RSA PRIVATE KEY-----\n',
+    epilogue: '-----END RSA PRIVATE KEY-----\n'
+  }];
+
+  for(var i = 0; i < headers.length; ++i) {
+    var header = headers[i];
+    try {
+      var newKey = header.prologue;
+      newKey += key + '\n';
+      newKey += header.epilogue;
+
+      return {
+        valid: !!KEYUTIL.getKey(newKey),
+        key: newKey
+      };
+    } catch(e2) {
+      // Ignore
+    }
+  }
+
+  return {
+    valid: false,
+    key: key
+  };
+};