[gradsusr] Error while loading shared library: libssl.so

[Jennifer M Adams]

Dear Everyone,
The SSL library is dynamically linked with recent builds of GrADS to support access to opendap servers via HTTPS. The use of a secure servers for data distribution is a US gov’t mandate and complying with this order is a gigantic nuisance for data providers, data users, and software developers. The use of encryption in any software package that is widely distributed and used globally has some legal issues; the fact that GrADS is open source and is linked with the openSSL library dynamically is how we are able to avoid any culpability. It is the responsibility of the users to install the SSL library on their local servers so that GrADS can load it at runtime. Use the environment variable LD_LIBRARY_PATH to tell GrADS where libssl.so is located on your system.

I have noticed that older versions of libssl do not succeed in satisfying the authentication requirements of the opendap servers at NASA. My testing servers, listed below, require libssl.so.10.
https://goldsmr4.sci.gsfc.nasa.gov:443/dods/
https://goldsmr4.gesdisc.eosdis.nasa.gov:443/opendap/
https://disc2.gesdisc.eosdis.nasa.gov:443/opendap/

If you do not need to get any data via opendap/https, I have also posted builds that are not linked with SSL for RHEL and OSX. Please see http://cola.gmu.edu/grads/downloads.php for the latest links.

—Jennifer



--
Jennifer Miletta Adams
Center for Ocean-Land-Atmosphere Studies (COLA)
George Mason University



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