Monthly Archives: June 2010

Exclude .git or .svn directories in Eclipse (Helios)

If  you are using Ctrl+Shift+T in Eclipse and have .git or .svn directory showing up it is easy to fix it without having to use another plugin for eclipse like subeclipse or egit.

Open the Properties of your project go to Resource=>Resource Filters and click on Add to add a new filter.

Now just do like this ScreenShot :

Edit Resource Filter for .svn or .git exclude

Edit Resource Filter for .svn or .git exclude

Change the *.git* to *.svn* if you like for subversion.

Upload to Rackspace Cloud Files in a shell script

I don’t really use much the GUI and always the command line so I don’t really use the Cloud File plugin I created for nautilus.

So here is a shell script to upload to Rackspace Cloud Files and give you back a shortened URL of the public URL file. Great for quick sharing… You have to install the zenity binary first..

[Update: this is now available here https://github.com/chmouel/upcs]

Unit conversion from zsh

Quick conversion from shell :

connecting to self signed SSL certificate from Java on Debian/Ubuntu

You want to connect to self signed SSL certificate from Java using the standard HttpsURLConnection and you are getting this error, because the self signed certificate is obviously not recognized by Java :

SEVERE: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
	at sun.security.ssl.Alerts.getSSLException(Alerts.java:192)
	at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1639)
	at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:215)
	at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:209)

it seems that there is a lot of ‘solutions’ (read hack) or workaround around the web which is resumed well on this stack overflow article.

There is actually a very easy (and secure) way on Debian based systems.

– Go to your https url with Firefox
– Right Click to ‘View Page Info’
– In ‘Security’ tab you will see a button saying ‘View Certificate’
– Click now on the ‘Details’ tab
– Finally click on the ‘Export’ button which offer you to save the PEM certifcate of the website somewhere on your filesystem.

Call it my.self.signed.domain.name.pem or whatever my.self.signed.domain.name should be and put the file in /etc/ssl/certs now you just have to run the command :

sudo update-ca-certificates

and it should add your certificate to the java keystore, you can check it with the command (Enter for Password) :

keytool -list -v -keystore /etc/ssl/certs/java/cacerts