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XROOTD-L  March 2020

XROOTD-L March 2020

Subject:

Re: XrdSecGSIDELEGPROXY ignored by xrdcp

From:

Diego Ciangottini <[log in to unmask]>

Reply-To:

Support use of xrootd by HEP experiments <[log in to unmask]>

Date:

Thu, 5 Mar 2020 08:47:25 +0100

Content-Type:

text/plain

Parts/Attachments:

Parts/Attachments

text/plain (208 lines)

Hi Andy, Michal,

thank you. Indeed the main objective was to understand if this was an 
option to be investigated. It's pretty clear that is not the case, but I 
would say that this is not a showstopper. We do have some backup plans 
to evaluate now, if you are interested I can eventually report the 
results of these setups.

Cheers,
Diego

Il 3/4/2020 6:55 PM, Andrew Hanushevsky ha scritto:
> Ah, please be aware that the proxy server does not support delegation. 
> So, it would seema nother approach needs to be considered.
>
> Andy
>
> On Wed, 4 Mar 2020, Diego Ciangottini wrote:
>
>> Hi Michal,
>>
>> thanks for the clarification.
>> The use case that we are evaluating is a multi-group scernario where 
>> it is possible to share the access to the same cache daemon. 
>> Different namespace mappings are then managed by VOMS groups both on 
>> the cache and on origin server.
>>
>> I'm aware of the motivation/discussion for which this has been disabled,
>> but let's say that in some controlled scenarios, as the one we are 
>> investigating,
>> having the possibility of enabling it explicitly could be very useful.
>>
>> Diego
>>
>> Il 3/4/2020 4:08 PM, Michal Kamil Simon ha scritto:
>>> Hi Diego,
>>>
>>> Since 4.9.0 xrdcp will allow delegation only if it has been 
>>> requested explicitly, e.g.
>>>
>>>   xrdcp --tpc delegate only  ....
>>>
>>> (it will also reset XrdSecGSIDELEGPROXY)
>>>
>>> Currently, the only way to request delegation is when doing a 
>>> third-party-copy.
>>> So yes, one could say it's disabled on purpose. If you have a valid 
>>> use-case and
>>> a strong desire I could life the XrdSecGSIDELEGPROXY untouched in 
>>> case of
>>> classical copy jobs.
>>>
>>> Cheers,
>>> Michal
>>> ------------------------------------------------------------------------ 
>>>
>>> *From:* [log in to unmask] [[log in to unmask]] on 
>>> behalf of Diego Ciangottini [[log in to unmask]]
>>> *Sent:* 04 March 2020 14:35
>>> *To:* [log in to unmask]
>>> *Subject:* XrdSecGSIDELEGPROXY ignored by xrdcp
>>>
>>> Hello everyone,
>>>
>>> I'm playing a bit with several authN/Z combination for XCache and 
>>> I'm facing a problem when trying to use user proxy delegation.
>>>
>>> Even though I know that this is a "controversial" feature, it might 
>>> be useful in some special cases. So, the problem is the following:
>>>
>>> - the cache server is v4.11.2 and configured with (*)
>>>
>>> - I'm then trying the following command with xrdcp v4.11.2:
>>>
>>> XrdSecGSIDELEGPROXY=2 XrdSecDEBUG=1 xrdcp -f 
>>> root://131.154.96.135:31094//test/test.txt /dev/null
>>>
>>> - one thing that already sounds strange is the output (**) where I see:
>>>
>>> 200304 14:02:50 16321 secgsi_InitOpts: *Proxy delegation option: 0*
>>>
>>> - and on server side accordingly:
>>>
>>> 200304 13:02:50 28389 secgsi_ErrF: Secgsi: ErrParseBuffer: error 
>>> getting user proxies: kXGS_init
>>>
>>> Am I missing something or it's indeed a problem client side? Is it  
>>> even supposed to work or is it disabled on purpose?
>>>
>>> Cheers,
>>> Diego
>>>
>>>
>>> (*)
>>> all.export / stage
>>> oss.localroot /data/
>>>
>>> xrootd.trace debug
>>> xrd.trace debug
>>> sec.trace debug
>>>
>>> xrd.port 31094
>>>
>>> xrootd.seclib /usr/lib64/libXrdSec.so
>>> sec.protocol /usr/lib64 gsi \
>>>   -dlgpxy:1 -authzpxy:1 -exppxy:/tmp/x509up_g<group> \
>>>   -certdir:/etc/grid-security/certificates \
>>> -cert:/etc/grid-security/xrd/cloud-vm135.cloud.cnaf.infn.it.crt \
>>> -key:/etc/grid-security/xrd/cloud-vm135.cloud.cnaf.infn.it.key \
>>>   -d:3 \
>>>   -ca:1 -crl:0 \
>>>   -gridmap:/dev/null  \
>>>   -vomsfun:/usr/lib64/libXrdSecgsiVOMS.so -vomsfunparms:certfmt=raw|dbg
>>>
>>> ofs.authorize 1
>>>
>>> acc.audit deny
>>> acc.authdb /etc/xrootd/Authfile-auth-X509-vo
>>> sec.protbind * gsi
>>>
>>>
>>> ofs.osslib   libXrdPss.so
>>> pss.cachelib libXrdFileCache.so
>>>
>>> pss.origin 193.204.89.93:1094
>>>
>>> pfc.diskusage 0.95 0.99
>>> pfc.ram     8G
>>>
>>> pfc.blocksize  512k
>>> pfc.prefetch   0
>>>
>>> (**)
>>> sec_Client: protocol request for host 131.154.96.135 
>>> token='&P=gsi,v:10400,c:ssl,ca:eec62e9c.0|bf6400bf.0'
>>> sec_PM: Loaded gsi protocol object from libXrdSecgsi.so
>>> 200304 14:02:50 16321 secgsi_InitOpts: *** 
>>> ------------------------------------------------------------ ***
>>> 200304 14:02:50 16321 secgsi_InitOpts:  Mode: client
>>> 200304 14:02:50 16321 secgsi_InitOpts:  Debug: 1
>>> 200304 14:02:50 16321 secgsi_InitOpts:  CA dir: 
>>> /afs/cern.ch/user/d/dciangot/CA
>>> 200304 14:02:50 16321 secgsi_InitOpts:  CA verification level: 1
>>> 200304 14:02:50 16321 secgsi_InitOpts:  CRL dir: 
>>> ,/afs/cern.ch/user/d/dciangot/CA/
>>> 200304 14:02:50 16321 secgsi_InitOpts:  CRL extension: .r0
>>> 200304 14:02:50 16321 secgsi_InitOpts:  CRL check level: 1
>>> 200304 14:02:50 16321 secgsi_InitOpts:  CRL refresh time: 86400
>>> 200304 14:02:50 16321 secgsi_InitOpts:  Certificate: 
>>> /afs/cern.ch/user/d/dciangot/.globus/usercert.pem
>>> 200304 14:02:50 16321 secgsi_InitOpts:  Key: 
>>> /afs/cern.ch/user/d/dciangot/.globus/userkey.pem
>>> 200304 14:02:50 16321 secgsi_InitOpts:  Proxy file: /tmp/x509up_u34086
>>> 200304 14:02:50 16321 secgsi_InitOpts:  Proxy validity: 12:00
>>> 200304 14:02:50 16321 secgsi_InitOpts:  Proxy dep length: 0
>>> 200304 14:02:50 16321 secgsi_InitOpts:  Proxy bits: 512
>>> 200304 14:02:50 16321 secgsi_InitOpts:  Proxy sign option: 1
>>> 200304 14:02:50 16321 secgsi_InitOpts:  Proxy delegation option: 0
>>> 200304 14:02:50 16321 secgsi_InitOpts:  Allowed server names: 
>>> [*/]<target host name>[/*]
>>> 200304 14:02:50 16321 secgsi_InitOpts:  Crypto modules: ssl
>>> 200304 14:02:50 16321 secgsi_InitOpts:  Ciphers: 
>>> aes-128-cbc:bf-cbc:des-ede3-cbc
>>> 200304 14:02:50 16321 secgsi_InitOpts:  MDigests: sha1:md5
>>> 200304 14:02:50 16321 secgsi_InitOpts:  Trusting DNS for hostname 
>>> checking
>>> 200304 14:02:50 16321 secgsi_InitOpts: *** 
>>> ------------------------------------------------------------ ***
>>> sec_PM: Using gsi protocol, 
>>> args='v:10400,c:ssl,ca:eec62e9c.0|bf6400bf.0'
>>> 200304 14:02:50 16321 cryptossl_X509::CertType: certificate has 3 
>>> extensions
>>> 200304 14:02:50 16321 secgsi_GetCA: CRL is missing or expired: 
>>> ignoring (CRLCheck: 1)
>>> 200304 14:02:50 16321 cryptossl_X509::CertType: certificate has 3 
>>> extensions
>>> 200304 14:02:50 16321 cryptossl_X509::CertType: certificate has 9 
>>> extensions
>>> 200304 14:02:50 16321 cryptossl_X509::CertType: certificate has 4 
>>> extensions
>>> [0B/0B][100%][==================================================][0B/s]
>>> Run: [ERROR] Server responded with an error: [3010] Unable to open 
>>> /test/test.txt; permission denied
>>>
>>>
>>>
>>> ------------------------------------------------------------------------ 
>>>
>>>
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>>
>> ########################################################################
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