[Building Sakai] BLTI : BaseString generation

[Matthew Jones]

For me in Sakai a site with this title is throwing an exception.
2012-10-10 17:53:08,250  INFO http-bio-8080-exec-49
org.sakaiproject.linktool.LinkToolUtil - LinkToolSetup complete
java.io.CharConversionException: Not an ISO 8859-1 character: ’
    at javax.servlet.ServletOutputStream.print(ServletOutputStream.java:77)
    at
javax.servlet.ServletOutputStream.println(ServletOutputStream.java:187)
    at
org.sakaiproject.basiclti.impl.BasicLTISecurityServiceImpl.sendHTMLPage(BasicLTISecurityServiceImpl.java:222)
    at
org.sakaiproject.basiclti.impl.BasicLTISecurityServiceImpl.access$200(BasicLTISecurityServiceImpl.java:71)
    at
org.sakaiproject.basiclti.impl.BasicLTISecurityServiceImpl$1.handleAccess(BasicLTISecurityServiceImpl.java:322)

On Wed, Oct 10, 2012 at 5:35 PM, Yegeneswari Nagappan
<ynagappan at unicon.net>wrote:

> Hi,
>
> We are using BLTI tool in Sakai 2.9 and need some clarification on how the
> BaseString is generated for parameters with special characters in it. The
> launch from a site with title "French d’économie" (has accent character in
> title)failed because the BaseString that got generated for the title on
> Sakai is different from the value on the BLTI Producer system.
>
> Should the string be utf-8 encoded character set prior to Step 1 mentioned
> in OAuth 1.0 Spec for Percent-encoding strings (
> http://tools.ietf.org/html/rfc5849#section-3.6) ?
>
> On Sakai side, the string "French d’économie" was used directly in Step 1
> where as on the BLTI producer system, the utf-8 encoded character set i.e
> "French d’économie" was used in Step 1.
>
> Can you please confirm if Sakai is implemented as per spec.
>
> Thanks for your help!
>
> --
> Esh
> P.S :I used this site http://coderstoolbox.net/string/ to find the utf-8
> encoded character set for given string.
>
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