hulk.phy

/*
* pStorage
* --------
* a wrapper
around
PersistJS an
CryptoJS to
allow TTL and
Content
Validation
* by Barry
Shteiman, 2014,
ref:www.
sectorix.com
*/
var pStorage =
new function()
{
this.uid =
'my_
pStorage';
this.salt =
'';
this.
datastore = new
Persist.Store(
this.uid);
this.get =
function get(
key) {
var
entry = JSON.
parse(this.
datastore.get(
key)||0);
if (!
entry) return
null;
if
(entry.hash !==
this.hash(
entry.value +
this.salt)) {
this.datastore
.remove(key);
return null;
}
if
(entry.ttl &amp
;& entry.
ttl + entry.now
< this.now
()) {
this.datastore
.remove(key);
return null;
}
return entry.
value;
}
this.set =
function set(
key,value,ttl)
{
this.
datastore.set(
key, JSON.
stringify({
ttl
: ttl || 0,
now
: this.now()
,
hash : this.
hash(value +
this.salt),
value : value
}) );
}
this.del =
function del(
key) {
var
entry = JSON.
parse(this.
datastore.get(
key)||"0&
quot;);
if (!
entry) return
null;
else {
this.datastore.
remove(key);
return null;
}
}
this.now =
function now ()
{return+new
Date}
this.hash =
function hash(
value) {return
CryptoJS.MD5(
value).toString
();}
}