Wednesday, June 20, 2012

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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Monday, March 26, 2012

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
(&amp;(objectClass=person)(&#33;(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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