extract password validation so users can access the validation within…

… their own code for things like password reset

fields/types/password/PasswordType.js

@@ -161,37 +161,44 @@ password.prototype.compare = function (item, candidate, callback) {
  * Asynchronously confirms that the provided password is valid
  */
 password.prototype.validateInput = function (data, callback) {
-	var detail = '';
-	var result = true;
 	var min = this.options.min;
-	var max = this.options.max || 72;
+	var max = this.options.max;
 	var complexity = this.options.complexity;
 	var confirmValue = this.getValueFromData(data, '_confirm');
 	var passwordValue = this.getValueFromData(data);
-	if (confirmValue !== undefined
-		&& passwordValue !== confirmValue) {
+
+	var validation = validate(passwordValue, confirmValue, min, max, complexity);
+
+	utils.defer(callback, validation.result, validation.detail);
+};
+
+var validate = password.validate = function (pass, confirm, min, max, complexity) {
+	var detail = '';
+	var result = true;
+	max = max || 72;
+	if (confirm !== undefined
+		&& pass !== confirm) {
 		detail = 'passwords must match\n';
 	}
 
-	if (min && typeof passwordValue === 'string' && passwordValue.length < min) {
+	if (min && typeof pass === 'string' && pass.length < min) {
 		detail += 'password must be longer than ' + min + ' characters\n';
 	}
 
-	if (max && typeof passwordValue === 'string' && passwordValue.length > max) {
+	if (max && typeof pass === 'string' && pass.length > max) {
 		detail += 'password must not be longer than ' + max + ' characters\n';
 	}
 
 	for (var prop in complexity) {
-		if (complexity[prop] && typeof passwordValue === 'string') {
-			var complexityCheck = (regexChunk[prop]).test(passwordValue);
+		if (complexity[prop] && typeof password === 'string') {
+			var complexityCheck = (regexChunk[prop]).test(pass);
 			if (!complexityCheck) {
 				detail += detailMsg[prop] + '\n';
 			}
 		}
 	}
 	result = detail.length === 0;
-
-	utils.defer(callback, result, detail);
+	return { result, detail };
 };
 
 /**