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PasswordField.scala
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PasswordField.scala
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/*
* Copyright 2007-2011 WorldWide Conferencing, LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.liftweb
package record
package field
import xml._
import common._
import json._
import util._
import Helpers._
import http.S
import http.js._
import S._
import JE._
object PasswordField {
@volatile var blankPw = "*******"
@volatile var minPasswordLength = 5
@volatile var logRounds = 10
def hashpw(in: String): Box[String] = tryo(BCrypt.hashpw(in, BCrypt.gensalt(logRounds)))
}
trait PasswordTypedField extends TypedField[String] {
private var invalidPw = false
private var invalidMsg = ""
def match_?(toTest: String): Boolean =
valueBox.filter(_.length > 0)
.flatMap(p => tryo(BCrypt.checkpw(toTest, p)))
.openOr(false)
override def set_!(in: Box[String]): Box[String] = {
// can't be hashed here, because this get's called when setting value from database (Squeryl)
in
}
def setPlain(in: String): String = setBoxPlain(Full(in)) openOr defaultValue
def setBoxPlain(in: Box[String]): Box[String] = {
if(!validatePassword(in)) {
val hashed = in.map(s => PasswordField.hashpw(s) openOr s)
setBox(hashed)
}
else setBox(defaultValueBox)
}
/**
* If passed value is an Array[String] or a List[String] containing 2 items with equal value, it it hashes this value and sets it as new password.
* If passed value is a String or a Full[String] that starts with "$2a$", it assumes that it's a hashed version, thus sets it as it is, without hashing.
* In any other case, it fails the validation with "Passwords do not match" error
*/
def setFromAny(in: Any): Box[String] = {
in match {
case (a: Array[String]) if (a.length == 2 && a(0) == a(1)) => setBoxPlain(Full(a(0)))
case (h1: String) :: (h2: String) :: Nil if h1 == h2 => setBoxPlain(Full(h1))
case (hash: String) if(hash.startsWith("$2a$")) => setBox(Full(hash))
case Full(hash: String) if(hash.startsWith("$2a$")) => setBox(Full(hash))
case _ => {invalidPw = true; invalidMsg = S.?("passwords.do.not.match"); Failure(invalidMsg)}
}
}
def setFromString(s: String): Box[String] = s match {
case null|"" if optional_? => setBoxPlain(Empty)
case null|"" => setBoxPlain(Failure(notOptionalErrorMessage))
case _ => setBoxPlain(Full(s))
}
override def validate: List[FieldError] = {
if (!invalidPw && valueBox != defaultValueBox) Nil
else if (invalidPw) List(FieldError(this, Text(invalidMsg)))
else List(FieldError(this, Text(notOptionalErrorMessage)))
}
override def notOptionalErrorMessage = S.?("password.must.be.set")
override def formInputType = "password"
private def elem = S.fmapFunc(SFuncHolder(this.setFromAny(_))){
funcName => <input type={formInputType}
name={funcName}
value={valueBox openOr ""}
tabindex={tabIndex toString}/>}
def toForm: Box[NodeSeq] =
uniqueFieldId match {
case Full(id) => Full(elem % ("id" -> id))
case _ => Full(elem)
}
protected def validatePassword(pwdValue: Box[String]): Boolean = {
pwdValue match {
case Empty|Full(""|null) if !optional_? => { invalidPw = true ; invalidMsg = notOptionalErrorMessage }
case Full(s) if s == "" || s == PasswordField.blankPw || s.length < PasswordField.minPasswordLength =>
{ invalidPw = true ; invalidMsg = S.?("password.too.short") }
case _ => { invalidPw = false; invalidMsg = "" }
}
invalidPw
}
def defaultValue = ""
def asJs = valueBox.map(Str) openOr JsNull
def asJValue: JValue = valueBox.map(v => JString(v)) openOr (JNothing: JValue)
def setFromJValue(jvalue: JValue): Box[MyType] = jvalue match {
case JNothing|JNull if optional_? => setBoxPlain(Empty)
case JString(s) => setFromString(s)
case other => setBoxPlain(FieldHelpers.expectedA("JString", other))
}
}
class PasswordField[OwnerType <: Record[OwnerType]](rec: OwnerType)
extends Field[String, OwnerType] with MandatoryTypedField[String] with PasswordTypedField {
def this(rec: OwnerType, value: String) = {
this(rec)
setPlain(value)
}
def owner = rec
override def apply(in: Box[String]): OwnerType =
if(owner.meta.mutable_?) {
this.setBoxPlain(in)
owner
} else {
owner.meta.createWithMutableField(owner, this, in)
}
}
class OptionalPasswordField[OwnerType <: Record[OwnerType]](rec: OwnerType)
extends Field[String, OwnerType] with OptionalTypedField[String] with PasswordTypedField {
def this(rec: OwnerType, value: Box[String]) = {
this(rec)
setBoxPlain(value)
}
def owner = rec
override def apply(in: Box[String]): OwnerType =
if(owner.meta.mutable_?) {
this.setBoxPlain(in)
owner
} else {
owner.meta.createWithMutableField(owner, this, in)
}
}