INSPIRE Conference 2011
Implementing GeoDRM support in an OpenLayers based viewer Access to the French geoportal WMS-C services from the Spanish SDI
R. Béjar, M. Á. Latre, J. Valiño, F. Javier Zarazaga-Soria, P. R. Muro-MedranoJune 28, 2011. Edinburgh
Advanced Information Systems Laboratory (IAAA)
http://iaaa.cps.unizar.es
Agenda
DRM OGC GeoDRM IDEE: Spain NSDI
IDEE map viewer Géoportail WMS-C services Solution in the IDEE map viewer
Architecture Implementation
Conclusions
Digital Rights Management (DRM)
It refers to the technologies used to limit the uses of digital contents to those intended by their providers
OGC GeoDRM
The OGC GeoDRM reference model describes an abstract model for DRM for geospatial resources It is an abstract model: high level terms,
definitions etc. agreed by the OGC members Not an implementation specification: different
implementations!
IDEE: Spain NSDI
Coordinated by the National Geographic Council SDI Commission
Geoportal: http://www.idee.es/ Development led by the IGN (Spain National
Geographic Institute) OGC and ISO 19100 standards
Services: WMS, WMS-C, CSW, Gaz, WFS, WCS, SLD, WMC, WCTS, WPS, FTP
Horizontal interoperability with French, Portuguese and Andorran geoportals This includes adding some of their WMS and WMS-
C services to the IDEE map viewer
IDEE map viewer
Based on OpenLayers Which supports WMS-C services, but not GeoDRM
Highly customized user interface and added functionalities
Géoportail WMS-C services
France geoportal (Géoportail): http://www.geoportail.fr/
API Géoportail: https://api.ign.fr/geoportail/ WMS-C is OSGeo Web Map Service - Cached
specification Access to tiled maps through an interface that is
a profile of OGC WMS Several WMS-C from the Géoportail services
can be used, but they are protected by an implementation of GeoDRM
Solution architecture
IDEE Viewer : Application
Request Session Token(request includes API key )
WMS -C :
PortrayalService
Request Map Tiles(request includes API session token )
Géoportail Token Server:
ApplicationService
http://jeton-api.ign.fr
Get an API Key
https://api.ign.fr/geoportail/ Requested by an administrator of your domain
Valid only for requests coming from, or REFERERed by, that domain, for 12 months
Request tiles from a GeoDRM WMS-C
Do I have an API session token?
Géoportail Token Server:
ApplicationService
IDEE Viewer : Application
WMS-C: PortrayalService
Request tiles from a GeoDRM WMS-C
Do I have an API session token?
Request new API session token
No
Géoportail Token Server:
ApplicationService
IDEE Viewer : Application
WMS-C: PortrayalService
http://jeton-api.ign.fr/getToken? key= &output=xml
<token name="gppkey"> gC2UZGUr_JJi5Nm7QKN5hQG06pEAAAAAAAHWLRe_BD6d4QTVAAABHiB QmEAAAAAAAlgAAQECvZr3ME_66sRrEAaAwzQAAEM0AADCtAAAQrQAAA</token>
Request tiles from a GeoDRM WMS-C
Do I have an API session token?
Set timer to request next session token (10 min.)
No
Géoportail Token Server:
ApplicationService
IDEE Viewer : Application
WMS-C: PortrayalService
Request tiles from a GeoDRM WMS-C
Do I have an API session token?
Géoportail Token Server:
ApplicationService
IDEE Viewer : Application
WMS-C: PortrayalService
Request tiles from a GeoDRM WMS-C
Do I have an API session token?
Request tileYes
Géoportail Token Server:
ApplicationService
IDEE Viewer : Application
WMS-C: PortrayalService
http://wxs.ign.fr/geoportail/wmsc?...
&gppkey=gC2UZGUr_JJi5Nm7QKN5hQG06pEAAAAAAAHWLRe_BD6d4QTVAAABHiB QmEAAAAAAAlgAAQECvZr3ME_66sRrEAaAwzQAAEM0AADCtAAAQrQAAA
&...
Conclusions
There is a working implementation of GeoDRM in the Géoportail WMS-C services
The Open Layers based IDEE map viewer has been adapted to support the Géoportail GeoDRM implementation for WMS-C services In order to improve horizontal interoperability
between IDEE and Géoportail As OGC GeoDRM is an abstract
specification, details will be different in different implementations The solution may not be reusable
Advanced Information Systems Laboratory (IAAA)
http://iaaa.cps.unizar.es
Rubén Béjar
http://twitter.com/Ruben_Bejar
IAAA is currently a partner in the EuroGeoSource project
http://www.eurogeosource.eu
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