Vim regex to find whitespaces between quotes

In this example we use the string href="test find white spaces" as an example and we want to encode our URIs with %(percent-encoding) in order to comply with RFC3986.
So we need to encode 'space' character to '%20'. In vim, we can do it simple enough with the following command :
:%s/\(href="[^"]\+\)\@<= /%20/g
been working almost 1 hour to figure this out. :p

Hope that helps somebody. (:

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LDAP Search Filter

This document outlines how to go about constructing a more sophisticated filter for the userSearchFilter and groupSearchFilter attributes in your AtlassianUser LDAP config file.

Once you have constructed your search filter using this document, you must escape the ampersand symbol and the exclamation mark symbol before adding to your XML file. So for example, (&(objectClass=person)(!(objectClass=user))) becomes (&(objectClass=person)(!(objectClass=user))) Refer to this external documentation on other XML characters that need escaping.

How do I match more than one attribute?

For example, if my users are distinguished by having two objectClass attributes (one equal to 'person' and another to 'user'), this is how I would match for it:

(&(objectClass=person)(objectClass=user))

Notice the ampersand symbol '&' symbol at the start. Translated this means: search for objectClass=person AND object=user.

Alternatively,

(|(objectClass=person)(objectClass=user))

Translated this means: search for objectClass=person OR object=user.

The pipe symbol '|' denotes 'OR'. As this is not a special XML character, then it should not need escaping.

Wildcards

(&(objectClass=user)(cn=*Marketing*))

This means: search for all entries that have objectClass=user AND cn that contains the word 'Marketing'.

How do I match 3 attributes?

This gets a little tricky:

(&(&(objectClass=user)(objectClass=top))(objectClass=person))

Notice how we weave one query into another. For 4 attributes, this would be:

(&(&(&(objectClass=top)(objectClass=person))(objectClass=organizationalPerson))(objectClass=user))

And so on.

Matching Components of Distinguished Names 

You may want to match part of a DN, for instance when you need to look for your groups in two subtrees of your server.

(&(objectClass=group)(|(ou:dn:=Chicago)(ou:dn:=Miami)))

will find groups with an OU component of their DN which is either 'Chicago' or 'Miami'. 

Using 'not'

To exclude entities which match an expression, use '!'. Note that this must be represented as the entity '!' in your XML file.

So

(&(objectClass=group)(&(ou:dn:=Chicago)(!(ou:dn:=Wrigleyville))))

will find all Chicago groups except those with a Wrigleyville OU component.

Note the extra parentheses: (!(<expression>))

Source : http://confluence.atlassian.com/display/DEV/How+to+write+LDAP+search+filters

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Symfony 2 - User Direct Login / Single Sign On

In applications integration, single sign on is mandatory. In this post, I won't cover how applications integration process. To be more specific, I assume you know how to integrate/share users between multiple applications.

This piece of code bellow will show how to do a login process in symfony 2 programatically for single sign on purpose. But before you can use the following code you have to implement your own custom user class implementing UserInterface for Symfony 2, custom role class implementing RoleInterface and have read Symfony 2 manual about how to setup a firewall in Symfony security configuration file.

The scenario :

We have exisiting web based application called Alice, and I write new application with Symfony 2 called Bob. Now, we want to integrate Bob as part of Alice application. The situation is Alice already have users because it was still used. And Bob will use users from Alice as its users.

The requirements :

Users want to login only one time from Alice login page in order to use both Alice and Bob applications.

The solution :

Flow chart

In above scheme, when a user try to access Bob, it will check for the user's credentials of Alice. If Bob found the user is not authenticated from Alice, it will send a redirect response to Alice login page. If the user is an authenticated user of Alice, then Bob will ask Alice the all the user information it needs and mark the user as an authenticated user in Bob application.

So in Bob authentication validator, we can use the following code to mark the authenticated user of Alice as an authenticated user of Bob.

$token = new UsernamePasswordToken($user, null, $firewall, $user->getRoles());
$this->get('security.context')->setToken($token);
$session = $this->get('session');
$session->set('_security_'.$firewall,serialize($token));

Happy coding (:

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