file-cookie-store

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file-cookie-store

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Store cookies in Netscape file format for tough-cookie library

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# Introduction

file-cookie-store - this is file store for cookie management library [tough cookie](https://github.com/goinstant/tough-cookie "tough cookie").
Library allow parallel access to the cookies file based on [lockfile](https://github.com/npm/lockfile) library.

## Synopsis

``` javascript
var FileCookieStore = require('file-cookie-store');
var CookieJar = require("tough-cookie").CookieJar;

var jar = new CookieJar(new FileCookieStore("./cookie.txt", {lockfile : true}));
```

## Installation

If you have npm installed, you can simply type:
          
          npm install file-cookie-store
          
Or you can clone this repository using the git command:

git clone git://github.com/JSBizon/file-cookie-store.git

## Usage

Class FileCookieStore has different properties:

* force_parse - continue parse file and don't throw exception if bad line was found ( Default : _false_)
  * lockfile - use lockfile for access to the cookies file ( Default : _true_)
  * mode - mode of new created file ( Default : _438_ aka 0666 in Octal)
  * http_only_extension - use http_only extension - prefix #HttpOnly_ for http only cookies. Curl, FF, etc use this kind of entries ( Default : _true_)
  * lockfile_retries - attempts for lock file before throw exception ( Default : _200_)
  * auto_sync - in this mode cookies rewrote to the file after every change. If you set auto_sync to the _false_, you have to call method 'save' manually ( Default : _true_).

Example of using FileCookieStore without auto_sync mode:

``` javascript
var Q = require('q');
var FileCookieStore = require('file-cookie-store');
var TOUGH = require("tough-cookie");

var cookies_store = new FileCookieStore("./cookie.txt", {auto_sync : false});
var jar = new TOUGH.CookieJar(cookies_store);

Q.nbind(jar.setCookie, jar)(new new TOUGH.Cookie({...}), 'http://test.com/')
.then(function () {
          return Q.nbind(jar.setCookie, jar)(new TOUGH.Cookie({...}), 'http://test.com/')
}).then(function () {
          return Q.nbind(cookies_store.save, cookies_store)();//save changes to the file
});
```

#### Export cookies

For receive all cookies from the store might be used method export:

``` javascript
cookie_store.export(function(cookies) {
  //array cookies
});

cookie_store.export(new MemoryCookieStore(),function(memory_cookie_store) { 
  //memory_cookie_store
});
```

#### Store file format

Cookies stored in [Netscape's cookie.txt file](http://www.cookiecentral.com/faq/#3.5).
This allow import/export cookies into/from different browsers. And use with command-line network tools: curl, wget, etc.

The layout of Netscape's cookies.txt file is such that each line contains one name-value pair. An example cookies.txt file may have an entry that looks like this:

.netscape.com     TRUE   /  FALSE  946684799   NETSCAPE_ID  100103

Each line represents a single piece of stored information. A tab is inserted between each of the fields.

From left-to-right, here is what each field represents:

* domain - The domain that created AND that can read the variable.
  * flag - A TRUE/FALSE value indicating if all machines within a given domain can access the variable. This value is set automatically by the browser, depending on the value you set for domain.
  * path - The path within the domain that the variable is valid for.
  * secure - A TRUE/FALSE value indicating if a secure connection with the domain is needed to access the variable.
  * expiration - The UNIX time that the variable will expire on. UNIX time is defined as the number of seconds since Jan 1, 1970 00:00:00 GMT.
  * name - The name of the variable.
  * value - The value of the variable.

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