legal analysis of source code

[ RMLL 2013, Bruxelles – Thursday 11th July 2013 ]

Legal analysis of source codePresenter : Dr Ir Robert Viseur

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General context

• Media coverage about violations of intellectual property in ICT industry.

• Intellectual property ? Mainly:• patents,• copyright,• industrial design rights,• trademarks.

• Examples: several trial between Apple, Samsung and Nokia about patents, copyright (look&feel) and industrial design rights violation.

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Free software context (1/2)

• Media coverage about free software licenses violation.• Case of gpl-violations.org.

• Goal: « The gpl-violations.org project tries to raise public awareness about past and present infringing use(r)s of GPL licensed software »

• Case of NeoNova et Israpunt trial in Netherlands.• Mixed development -> trial about the use of closed part

(GUI).• URL: http://www.techzine.nl/nieuws/26429/israpunt-beschuldigd-van-softwarediefstal.html.

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Free software context (2/2)

• Case of the election software in Belgium.

• Distribution without license but...

• One of the files in the source code available under the terms of the GNU GPL 2 license.

• URL: https://joinup.ec.europa.eu/news/be-government-publishes-source-code-election-software.

• Case of multiple violations in mobile applications store.

• Various violations: lack of notices/attribution files (AL), incompatibilities between licenses,...

• URL: http://techcrunch.com/2011/03/08/potential-open-source-license-violations-in-android-and-ios-apps/.

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Protection of computer softwares

• No specific law.• Covered by copyright.• Possibility to patent software.

• In particular cases in Europe (e.g. industrial process).

• Widely used in United States.

• Legal rights and duties explained in licenses (contracts).

• The licenses are build on copyright but can also refer to commercial brands and patents.

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Software licenses

• Three types of licenses: • Proprietary licenses.

• E.g. CLUF for Microsoft softwares.

• Hybrid licences (rare).• E.g. former SCSL for Sun Microsystems softwares.

• Free software licenses.• E.g. AL, BSD, GPL, LGPL,...• More or less 70 free software licenses.

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Free software licenses (1/2)

• Two families of free software licenses:• Permissive / academic licenses.• Copyleft / restrictive licenses (licenses with

reciprocity).

• Three types of licenses with reciprocity.• Weak reciprocity.

• File-based, or not.

• Strong reciprocity.• Network reciprocity.

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Free software licenses (2/2)

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Issues for companies (1/2)

• Problem of incompatibilities between free software licenses.

• Problem of incompatibily between free software licenses and agreements in marketplaces.

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Issues for companies (2/2)

• Problem of specific obligations in free sofware licenses (e.g. notices, automatic patent license agreement or patent reciprocity, etc.).

• Problem of commercial brands and patents.• Problem of developments mixing free and

proprietary source codes (e.g. partnerships).• (Problem of « wild » copy and paste behaviors).

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How to address those issues ?

• Introduce corporate governance rules.• See for example the « Open Source Review Board » at

Hewlett-Packard (Gobeille, 2008).

• Take account of license constraints in the modelling of the software (architecture).• See for example the « Software Architecture License

Tracability Analysis » tool based on ArchStudio4 or...

• « OSSLI » (Open Source Software Licensing) tool based on Eclipse and Papyrus (Alspaugh et al., 2009; Lokhman et al., 2012).

• Conduct a legal analysis of source code.• See for example FOSSology (www.fossology.org).

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Tools for legal analysis of source code

• Proprietary software: Black Duck Software.

• Available open source tools:

• The most famous: FOSSology (see http://www.fossology.org).

• The lightest: Ohcount (see http://www.ohloh.net/p/ohcount).

• Others: ASLA (see http://asla.sourceforge.net/), LIDESC (see http://www.mibsoftware.com/librock/lidesc/), etc.

• Some criteria of choice:

• availability,

• ease of installation,

• lightness,

• support of licenses (+ precision / recall),

• community,

• updates.

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Presentation of Ohcount, Find and Grep (1/2)

• Ohcount: • Formally: source code line counter.

• But...

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Presentation of Ohcount, Find and Grep (2/2)

• Ohcount: • Option « -l, --license » : display detected licensing

information contained in each source code file.• Available in Synaptic.

• Find: search for files in a directory hierarchy.• Grep, egrep, fgrep: print lines matching a pattern.

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What we used

• Ohcount for collecting licensing information.• Find and grep for detecting files related to

attributions, patents or commercial brands.• List of keywords and...• Matching with filenames or textual content.

• Output: report (in HTML format) processed by configurable PHP script.

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Example 1: simple library

• Detection of forgotten licensed files:

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Example 2: free software suite (1/4)

• Detection of attributions (by filename / by content):

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• Detection of commercial brands (by filename / by content):

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• Detection of patents (by filename / by content):

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• Detection of licenses (information from Ohcount) :

?!

?!

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Limitations of the method

• Some crashes with Ohcount in big file trees. • Problem with the version of the license (Ohcount).

• Example: GPL v2, GPL v2+ or GPL v3.

• Pay attention to the files covered by several licenses.

• Pay attention to the list of supported licenses.• Don't be afraid by false positives...• No architectural view.• No recognition of open content (e.g. CC) or open

data licenses.

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Stay tuned

• Some planned improvement on the script.• Examples : recognition of CC licenses, better filtering of

find/grep outputs, deeper analyze of tables (licenses), etc.

• Fast evolution of tools.• Example : FOSSology 2.2.0 released in June 2013.

• Interest in integration with source code analysis softwares.• Example: plugin for FOSSology in the wish list of Sonar

(www.sonarqube.org).• URL: http://docs.codehaus.org/display/SONAR/Plugins+under+development.

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Thanks for your attention.

Any questions ?

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Useful additional readings...

• Alspaugh, T.A., Asuncion, H.U., & Scacchi W. (2009), « Intellectual property rights requirements for heterogeneously-licensed systems », 17th IEEE International Requirements Engineering Conference (RE’09), pp. 24–33, Augustus 31 - September 4, 2009.

• Gobeille, R. (2008), « The FOSSology project », MSR '08 Proceedings of the 2008 international working conference on Mining software repositories.

• Lokhman, A., Luoto, A., Abdul-Rahman, S., & Hammouda, I. (2012), « OSSLI: Architecture Level Management of Open Source Software Legality Concerns », Open Source Systems: Long-Term Sustainability, pp. 356-361, Springer Berlin Heidelberg.

• Tuunanen, T., Koskinen, J., & Kärkkäinen, T. (2006). « Retrieving open source software licenses », Open Source Systems, pp. 35-46, Springer US.

• Viseur, R. (2011), « La valorisation des logiciels libres en entreprise », Jeudis du Libre, Université de Mons, 15 septembre 2011.

• Viseur, R. (2012), « Gérer la propriété intellectuelle dans les projets à base de logiciels libres », 17ème conférence de l'Association Information et Management, Mai 2012.

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Contact

Dr Ir Robert Viseur

Email (@CETIC) : [email protected] Email (@UMONS) : [email protected]

Phone : 0032 (0) 479 66 08 76 Website : www.robertviseur.be

This presentation is covered by « CC-BY-ND » license.