R help - Jun 2011 - RCurl and kerberos

Dear list,

I would like to call a Kerberos-authenticated web-service from within R.

Curl can do it:
$ curl --negotiate -u : "http://my.web.service/"

so I would expect that RCurl also has the capability, but I have not been able
to find the correct options to set.

listCurlOptions() does not return anything with negotiate, and searching the
source of RCurl, the only thing I found was

./RCurl/R/curlInfo.S:names(CurlFeatureBits) = c("ipv6",
"kerberos4", "ssl", "libz", "ntlm",
"gssnegotiate",

but e.g.
getURL("http://my.web.service",.opts=curlOptions(username=":",httpauth="gssnegotiate"))

does not work.

Does anybody know if RCurl or another package is able to negotiate the GSS api
or otherwise access a Kerberos enabled webservice and how?

Testing was done in R 2.12.1 on Ubuntu 10.04.1 LTS / Lucid.

Thanks in advance,
Thomas.

Hi again,

RCurl is just smarter than me:
getURL("http://my.web.service",.opts=curlOptions(username=":"))
does the trick.

Don't know how I missed that yesterday.

Hope nobody wated time on this.

Cheers,
Thomas
> -----Original Message-----
> From: TAPO (Thomas Agersten Poulsen)
> Sent: 6. juni 2011 16:10
> To: r-help at r-project.org
> Cc: TAPO (Thomas Agersten Poulsen); JK (Jesper Agerbo Krogh)
> Subject: RCurl and kerberos
> 
> Dear list,
> 
> I would like to call a Kerberos-authenticated web-service from within
> R.
> 
> Curl can do it:
> $ curl --negotiate -u : "http://my.web.service/"
> 
> so I would expect that RCurl also has the capability, but I have not
> been able to find the correct options to set.
> 
> listCurlOptions() does not return anything with negotiate, and
> searching the source of RCurl, the only thing I found was
> 
> ./RCurl/R/curlInfo.S:names(CurlFeatureBits) = c("ipv6",
"kerberos4",
> "ssl", "libz", "ntlm",
"gssnegotiate",
> 
> but e.g.
>
getURL("http://my.web.service",.opts=curlOptions(username=":",httpauth>
"gssnegotiate"))
> 
> does not work.
> 
> Does anybody know if RCurl or another package is able to negotiate the
> GSS api or otherwise access a Kerberos enabled webservice and how?
> 
> Testing was done in R 2.12.1 on Ubuntu 10.04.1 LTS / Lucid.
> 
> Thanks in advance,
> Thomas.
>