Hello all, I'm currently attempting to use rlm_python to query LDAP (with python-ldap) and then return an XML string in a VSA (SAML-AAA-Assertion). However, when I try to load it, I get the dreaded "undefined symbol: PyExc_SystemError" error. This is on Ubuntu 12 with, I know, I know, FreeRADIUS 2.1.10. Python-LDAP was built on the local machine for the newest version (although the existing version in the Ubuntu repository has the same problem). Freeradius_samlldap exists in the correct path for Python eggs, and this is the PYTHONPATH (when I print it with Python): /usr/local/lib/python2.7/dist-packages/pysaml2-0.4.2-py2.7.egg,/usr/local/lib/python2.7/dist-packages/repoze.who-1.0.18-py2.7.egg,/usr/local/lib/python2.7/dist-packages/zope.interface-4.0.5-py2.7-linux-x86_64.egg,/usr/local/lib/python2.7/dist-packages/Paste-1.7.5.1-py2.7.egg,/usr/local/lib/python2.7/dist-packages/httplib2-0.8-py2.7.egg,/usr/local/lib/python2.7/dist-packages/decorator-3.4.0-py2.7.egg,/usr/local/lib/python2.7/dist-packages/freeradius_samlldap-0.0.1-py2.7.egg,/usr/local/lib/python2.7/dist-packages/python_ldap-2.4.13-py2.7-linux-x86_64.egg,/etc/freeradius/modules,/usr/local/lib/python2.7/dist-packages,/usr/lib/python2.7,/usr/lib/python2.7/plat-linux2,/usr/lib/python2.7/lib-tk,/usr/lib/python2.7/lib-old,/usr/lib/python2.7/lib-dynload,/usr/lib/python2.7/dist-packages,/usr/lib/pymodules/python2.7
From what I understand, using ldd -r will list several unresolved imports, but that is supposedly correct? Or is that horribly wrong?
The usual debug log is below: FreeRADIUS Version 2.1.10, for host x86_64-pc-linux-gnu, built on Sep 24 2012 at 17:58:57 Copyright (C) 1999-2009 The FreeRADIUS server project and contributors. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. You may redistribute copies of FreeRADIUS under the terms of the GNU General Public License v2. Starting - reading configuration files ... including configuration file /etc/freeradius/radiusd.conf including configuration file /etc/freeradius/proxy.conf including configuration file /etc/freeradius/clients.conf including files in directory /etc/freeradius/modules/ including configuration file /etc/freeradius/modules/attr_rewrite including configuration file /etc/freeradius/modules/wimax including configuration file /etc/freeradius/modules/linelog including configuration file /etc/freeradius/modules/saml including configuration file /etc/freeradius/modules/etc_group including configuration file /etc/freeradius/modules/echo including configuration file /etc/freeradius/modules/sqlcounter_expire_on_login including configuration file /etc/freeradius/modules/mschap including configuration file /etc/freeradius/modules/files including configuration file /etc/freeradius/modules/opendirectory including configuration file /etc/freeradius/modules/mac2ip including configuration file /etc/freeradius/modules/realm including configuration file /etc/freeradius/modules/perl including configuration file /etc/freeradius/modules/logintime including configuration file /etc/freeradius/modules/pap including configuration file /etc/freeradius/modules/detail.example.com including configuration file /etc/freeradius/modules/smbpasswd including configuration file /etc/freeradius/modules/sradutmp including configuration file /etc/freeradius/modules/policy including configuration file /etc/freeradius/modules/inner-eap including configuration file /etc/freeradius/modules/dynamic_clients including configuration file /etc/freeradius/modules/smsotp including configuration file /etc/freeradius/modules/umbrella_ldap including configuration file /etc/freeradius/modules/acct_unique including configuration file /etc/freeradius/modules/attr_filter including configuration file /etc/freeradius/modules/chap including configuration file /etc/freeradius/modules/detail including configuration file /etc/freeradius/modules/ntlm_auth including configuration file /etc/freeradius/modules/detail.log including configuration file /etc/freeradius/modules/passwd including configuration file /etc/freeradius/modules/ldap including configuration file /etc/freeradius/modules/cui including configuration file /etc/freeradius/modules/otp including configuration file /etc/freeradius/modules/ippool including configuration file /etc/freeradius/modules/mac2vlan including configuration file /etc/freeradius/modules/unix including configuration file /etc/freeradius/modules/exec including configuration file /etc/freeradius/modules/expr including configuration file /etc/freeradius/modules/expiration including configuration file /etc/freeradius/modules/preprocess including configuration file /etc/freeradius/modules/digest including configuration file /etc/freeradius/modules/radutmp including configuration file /etc/freeradius/modules/counter including configuration file /etc/freeradius/modules/krb5 including configuration file /etc/freeradius/modules/pam including configuration file /etc/freeradius/modules/checkval including configuration file /etc/freeradius/modules/sql_log including configuration file /etc/freeradius/modules/always including configuration file /etc/freeradius/eap.conf including configuration file /etc/freeradius/policy.conf including files in directory /etc/freeradius/sites-enabled/ including configuration file /etc/freeradius/sites-enabled/umbrella-inner including configuration file /etc/freeradius/sites-enabled/umbrella main { user = "freerad" group = "freerad" allow_core_dumps = no } including dictionary file /etc/freeradius/dictionary main { prefix = "/usr" localstatedir = "/var" logdir = "/var/log/freeradius" libdir = "/usr/lib/freeradius" radacctdir = "/var/log/freeradius/radacct" hostname_lookups = no max_request_time = 30 cleanup_delay = 5 max_requests = 1024 pidfile = "/var/run/freeradius/freeradius.pid" checkrad = "/usr/sbin/checkrad" debug_level = 0 proxy_requests = yes log { stripped_names = no auth = no auth_badpass = no auth_goodpass = no } security { max_attributes = 200 reject_delay = 1 status_server = yes } } radiusd: #### Loading Realms and Home Servers #### proxy server { retry_delay = 5 retry_count = 3 default_fallback = no dead_time = 120 wake_all_if_all_dead = no } realm umbrellaid.org { } realm LOCAL { } realm NULL { } radiusd: #### Loading Clients #### client localhost { ipaddr = 127.0.0.1 require_message_authenticator = no secret = "testing123" nastype = "other" } client 192.168.0.0/16 { require_message_authenticator = no secret = "testing123" shortname = "diamond-umbrella" } radiusd: #### Instantiating modules #### instantiate { Module: Linked to module rlm_exec Module: Instantiating module "exec" from file /etc/freeradius/modules/exec exec { wait = no input_pairs = "request" shell_escape = yes } Module: Linked to module rlm_expr Module: Instantiating module "expr" from file /etc/freeradius/modules/expr Module: Linked to module rlm_expiration Module: Instantiating module "expiration" from file /etc/freeradius/modules/expiration expiration { reply-message = "Password Has Expired " } Module: Linked to module rlm_logintime Module: Instantiating module "logintime" from file /etc/freeradius/modules/logintime logintime { reply-message = "You are calling outside your allowed timespan " minimum-timeout = 60 } } radiusd: #### Loading Virtual Servers #### server umbrella-inner { # from file /etc/freeradius/sites-enabled/umbrella-inner modules { Module: Checking authenticate {...} for more modules to load Module: Linked to module rlm_pap Module: Instantiating module "pap" from file /etc/freeradius/modules/pap pap { encryption_scheme = "auto" auto_header = no } Module: Linked to module rlm_chap Module: Instantiating module "chap" from file /etc/freeradius/modules/chap Module: Linked to module rlm_mschap Module: Instantiating module "mschap" from file /etc/freeradius/modules/mschap mschap { use_mppe = yes require_encryption = no require_strong = no with_ntdomain_hack = no } Module: Linked to module rlm_ldap Module: Instantiating module "ldap" from file /etc/freeradius/modules/umbrella_ldap ldap { server = "127.0.0.1" port = 389 password = "root" identity = "cn=admin" net_timeout = 1 timeout = 4 timelimit = 3 tls_mode = no start_tls = no tls_require_cert = "allow" basedn = "ou=people,dc=eurofel,dc=eu" filter = "(uid=%{%{Stripped-User-Name}:-%{User-Name}})" base_filter = "(objectclass=radiusprofile)" auto_header = no access_attr_used_for_allow = yes groupname_attribute = "cn" groupmembership_filter = "(|(&(objectClass=GroupOfNames)(member=%{Ldap-UserDn}))(&(objectClass=GroupOfUniqueNames)(uniquemember=%{Ldap-UserDn})))" dictionary_mapping = "/etc/freeradius/ldap.attrmap" ldap_debug = 0 ldap_connections_number = 5 compare_check_items = no do_xlat = yes edir_account_policy_check = no set_auth_type = yes } rlm_ldap: Registering ldap_groupcmp for Ldap-Group rlm_ldap: Registering ldap_xlat with xlat_name ldap rlm_ldap: reading ldap<->radius mappings from file /etc/freeradius/ldap.attrmap rlm_ldap: LDAP radiusCheckItem mapped to RADIUS $GENERIC$ rlm_ldap: LDAP radiusReplyItem mapped to RADIUS $GENERIC$ rlm_ldap: LDAP radiusAuthType mapped to RADIUS Auth-Type rlm_ldap: LDAP radiusSimultaneousUse mapped to RADIUS Simultaneous-Use rlm_ldap: LDAP radiusCalledStationId mapped to RADIUS Called-Station-Id rlm_ldap: LDAP radiusCallingStationId mapped to RADIUS Calling-Station-Id rlm_ldap: LDAP lmPassword mapped to RADIUS LM-Password rlm_ldap: LDAP ntPassword mapped to RADIUS NT-Password rlm_ldap: LDAP sambaLmPassword mapped to RADIUS LM-Password rlm_ldap: LDAP sambaNtPassword mapped to RADIUS NT-Password rlm_ldap: LDAP dBCSPwd mapped to RADIUS LM-Password rlm_ldap: LDAP userPassword mapped to RADIUS Password-With-Header rlm_ldap: LDAP acctFlags mapped to RADIUS SMB-Account-CTRL-TEXT rlm_ldap: LDAP radiusExpiration mapped to RADIUS Expiration rlm_ldap: LDAP radiusNASIpAddress mapped to RADIUS NAS-IP-Address rlm_ldap: LDAP radiusServiceType mapped to RADIUS Service-Type rlm_ldap: LDAP radiusFramedProtocol mapped to RADIUS Framed-Protocol rlm_ldap: LDAP radiusFramedIPAddress mapped to RADIUS Framed-IP-Address rlm_ldap: LDAP radiusFramedIPNetmask mapped to RADIUS Framed-IP-Netmask rlm_ldap: LDAP radiusFramedRoute mapped to RADIUS Framed-Route rlm_ldap: LDAP radiusFramedRouting mapped to RADIUS Framed-Routing rlm_ldap: LDAP radiusFilterId mapped to RADIUS Filter-Id rlm_ldap: LDAP radiusFramedMTU mapped to RADIUS Framed-MTU rlm_ldap: LDAP radiusFramedCompression mapped to RADIUS Framed-Compression rlm_ldap: LDAP radiusLoginIPHost mapped to RADIUS Login-IP-Host rlm_ldap: LDAP radiusLoginService mapped to RADIUS Login-Service rlm_ldap: LDAP radiusLoginTCPPort mapped to RADIUS Login-TCP-Port rlm_ldap: LDAP radiusCallbackNumber mapped to RADIUS Callback-Number rlm_ldap: LDAP radiusCallbackId mapped to RADIUS Callback-Id rlm_ldap: LDAP radiusFramedIPXNetwork mapped to RADIUS Framed-IPX-Network rlm_ldap: LDAP radiusClass mapped to RADIUS Class rlm_ldap: LDAP radiusSessionTimeout mapped to RADIUS Session-Timeout rlm_ldap: LDAP radiusIdleTimeout mapped to RADIUS Idle-Timeout rlm_ldap: LDAP radiusTerminationAction mapped to RADIUS Termination-Action rlm_ldap: LDAP radiusLoginLATService mapped to RADIUS Login-LAT-Service rlm_ldap: LDAP radiusLoginLATNode mapped to RADIUS Login-LAT-Node rlm_ldap: LDAP radiusLoginLATGroup mapped to RADIUS Login-LAT-Group rlm_ldap: LDAP radiusFramedAppleTalkLink mapped to RADIUS Framed-AppleTalk-Link rlm_ldap: LDAP radiusFramedAppleTalkNetwork mapped to RADIUS Framed-AppleTalk-Network rlm_ldap: LDAP radiusFramedAppleTalkZone mapped to RADIUS Framed-AppleTalk-Zone rlm_ldap: LDAP radiusPortLimit mapped to RADIUS Port-Limit rlm_ldap: LDAP radiusLoginLATPort mapped to RADIUS Login-LAT-Port rlm_ldap: LDAP radiusReplyMessage mapped to RADIUS Reply-Message rlm_ldap: LDAP radiusTunnelType mapped to RADIUS Tunnel-Type rlm_ldap: LDAP radiusTunnelMediumType mapped to RADIUS Tunnel-Medium-Type rlm_ldap: LDAP radiusTunnelPrivateGroupId mapped to RADIUS Tunnel-Private-Group-Id rlm_ldap: LDAP EAAHash mapped to RADIUS Chargeable-User-Identity conns: 0x1ff48d0 Module: Linked to module rlm_eap Module: Instantiating module "eap" from file /etc/freeradius/eap.conf eap { default_eap_type = "ttls" timer_expire = 60 ignore_unknown_eap_types = yes cisco_accounting_username_bug = no max_sessions = 4096 } Module: Linked to sub-module rlm_eap_md5 Module: Instantiating eap-md5 Module: Linked to sub-module rlm_eap_leap Module: Instantiating eap-leap Module: Linked to sub-module rlm_eap_gtc Module: Instantiating eap-gtc gtc { challenge = "Password: " auth_type = "PAP" } Module: Linked to sub-module rlm_eap_tls Module: Instantiating eap-tls tls { rsa_key_exchange = no dh_key_exchange = yes rsa_key_length = 512 dh_key_length = 512 verify_depth = 0 CA_path = "/etc/freeradius/certs" pem_file_type = yes private_key_file = "/etc/freeradius/certs/server.key" certificate_file = "/etc/freeradius/certs/server.pem" CA_file = "/etc/freeradius/certs/ca.pem" private_key_password = "whatever" dh_file = "/etc/freeradius/certs/dh" random_file = "/dev/urandom" fragment_size = 1024 include_length = yes check_crl = no cipher_list = "DEFAULT" make_cert_command = "/etc/freeradius/certs/bootstrap" cache { enable = no lifetime = 24 max_entries = 255 } verify { } } Module: Linked to sub-module rlm_eap_ttls Module: Instantiating eap-ttls ttls { default_eap_type = "gtc" copy_request_to_tunnel = yes use_tunneled_reply = yes virtual_server = "umbrella-inner" include_length = yes } Module: Checking authorize {...} for more modules to load Module: Linked to module rlm_realm Module: Instantiating module "suffix" from file /etc/freeradius/modules/realm realm suffix { format = "suffix" delimiter = "@" ignore_default = no ignore_null = no } Module: Checking session {...} for more modules to load Module: Linked to module rlm_radutmp Module: Instantiating module "radutmp" from file /etc/freeradius/modules/radutmp radutmp { filename = "/var/log/freeradius/radutmp" username = "%{User-Name}" case_sensitive = yes check_with_nas = yes perm = 384 callerid = yes } Module: Checking post-auth {...} for more modules to load Module: Linked to module rlm_detail Module: Instantiating module "reply_log" from file /etc/freeradius/modules/detail.log detail reply_log { detailfile = "/var/log/freeradius/radacct/%{Client-IP-Address}/reply-detail-%Y%m%d" header = "%t" detailperm = 384 dirperm = 493 locking = no log_packet_header = no } Module: Linked to module rlm_attr_filter Module: Instantiating module "attr_filter.access_reject" from file /etc/freeradius/modules/attr_filter attr_filter attr_filter.access_reject { attrsfile = "/etc/freeradius/attrs.access_reject" key = "%{User-Name}" } Module: Linked to module rlm_python Module: Instantiating module "python" from file /etc/freeradius/modules/saml python_init done python { mod_instantiate = "freeradius_samlldap" func_instantiate = "instantiate" mod_post_auth = "freeradius_samlldap" func_post_auth = "post_auth" } rlm_python:python_load_function: module 'freeradius_samlldap' is not found rlm_python:EXCEPT:<type 'exceptions.ImportError'>: /usr/local/lib/python2.7/dist-packages/python_ldap-2.4.13-py2.7-linux-x86_64.egg/_ldap.so: undefined symbol: PyExc_SystemError rlm_python:python_load_function: failed to import python function 'freeradius_samlldap.instantiate' /etc/freeradius/modules/saml[1]: Instantiation failed for module "python" /etc/freeradius/sites-enabled/umbrella-inner[149]: Failed to load module "python". /etc/freeradius/sites-enabled/umbrella-inner[133]: Errors parsing post-auth section. Some help with this is very much appreciated! :-) Stefan -- This e-mail and any attachments may contain confidential, copyright and or privileged material, and are for the use of the intended addressee only. If you are not the intended addressee or an authorised recipient of the addressee please notify us of receipt by returning the e-mail and do not use, copy, retain, distribute or disclose the information in or attached to the e-mail. Any opinions expressed within this e-mail are those of the individual and not necessarily of Diamond Light Source Ltd. Diamond Light Source Ltd. cannot guarantee that this e-mail or any attachments are free from viruses and we cannot accept liability for any damage which you may sustain as a result of software viruses which may be transmitted in or with the message. Diamond Light Source Limited (company no. 4375679). Registered in England and Wales with its registered office at Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0DE, United Kingdom
stefan.paetow@diamond.ac.uk wrote:
Hello all,
I'm currently attempting to use rlm_python to query LDAP (with python-ldap) and then return an XML string in a VSA (SAML-AAA-Assertion). However, when I try to load it, I get the dreaded "undefined symbol: PyExc_SystemError" error. This is on Ubuntu 12 with, I know, I know, FreeRADIUS 2.1.10.
Upgrade. Recent versions of FreeRADIUS have many fixes. Try the v2.x.x branch from github. It has even more python fixes. There's just no reason for us to debug a problem in 2.1.10. It's years out of date, and we *know* that newer versions have fixes. Alan DeKok.
On 08/20/2013 02:27 PM, stefan.paetow@diamond.ac.uk wrote:
Hello all,
I'm currently attempting to use rlm_python to query LDAP (with python-ldap) and then return an XML string in a VSA (SAML-AAA-Assertion). However, when I try to load it, I get the dreaded "undefined symbol: PyExc_SystemError" error. This is on Ubuntu 12 with, I know, I know, FreeRADIUS 2.1.10. Python-LDAP was
Well... as Alan says, upgrade. Particularly if "you know". However - embedding python is a pain in the arse. Various versions have issues with the module.so not linking to libpython.so, and not pulling in all the symbols it should. See: http://bugs.python.org/issue4434 ...and try not to despair at the (ahem) confusion of the python dev, and the various mouth-breathers who suggest static linking :o( Try "ldd <blah>/_ldap.so" and see if it links to libpython.so. If not, that's your problem, and there isn't much you can do about it because python is broken on your system. The OP in the bug above seems to think it's fixed for him in Python 2.5, but TBH I suspect distro-specific build-time options, rather than any change to the python runtime.
built on the local machine for the newest version (although the existing version in the Ubuntu repository has the same problem).
Freeradius_samlldap exists in the correct path for Python eggs, and
Just to point out that this is of course not the issue. It's one of the modules that this tries to pull in.
12 with, I know, I know, FreeRADIUS 2.1.10. Python-LDAP was
Well... as Alan says, upgrade. Particularly if "you know".
There is no 'out of the box' version for upgrade on Ubuntu 12 at this point short of having to compile it ourselves, that is (situation is similar to CentOS 6 where the last release is 2.1.12). But that's a discussion best had with the Ubuntu folks.
However - embedding python is a pain in the arse. Various versions have issues with the module.so not linking to libpython.so, and not pulling in all the symbols it should. See:
http://bugs.python.org/issue4434
...and try not to despair at the (ahem) confusion of the python dev, and the various mouth-breathers who suggest static linking :o(
Try "ldd <blah>/_ldap.so" and see if it links to libpython.so. If not, that's your problem, and there isn't much you can do about it because python is broken on your system.
I shall check that again (when I bring the box up for that magical third try). But if it's not, that again is probably an Ubuntu-specific issue, and we'll probably raise it with the Python-LDAP folks.
The OP in the bug above seems to think it's fixed for him in Python 2.5, but TBH I suspect distro-specific build-time options, rather than any change to the python runtime.
Indeed. In the meanwhile I've decided to work around it by using ldap.attrmap with a load of Tmp-String-* entries and hoping to feed those into a standard (non-C-linked) Python module for assembly into a compliant XML string. :-) Thanks for the heads-up. Stefan -- This e-mail and any attachments may contain confidential, copyright and or privileged material, and are for the use of the intended addressee only. If you are not the intended addressee or an authorised recipient of the addressee please notify us of receipt by returning the e-mail and do not use, copy, retain, distribute or disclose the information in or attached to the e-mail. Any opinions expressed within this e-mail are those of the individual and not necessarily of Diamond Light Source Ltd. Diamond Light Source Ltd. cannot guarantee that this e-mail or any attachments are free from viruses and we cannot accept liability for any damage which you may sustain as a result of software viruses which may be transmitted in or with the message. Diamond Light Source Limited (company no. 4375679). Registered in England and Wales with its registered office at Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0DE, United Kingdom
On Wed, Aug 21, 2013 at 09:19:35AM +0000, stefan.paetow@diamond.ac.uk wrote:
Well... as Alan says, upgrade. Particularly if "you know".
There is no 'out of the box' version for upgrade on Ubuntu 12 at this point short of having to compile it ourselves, that is
Building your own packages on Debian/Ubuntu is trivial. There's really no excuse not to run the latest code. See: http://wiki.freeradius.org/building/Build#Building-Debian-packages Building from git is just about as easy (I think easier - you save the step of downloading a tarball); I wrote it up a while back: http://notes.asd.me.uk/2012/01/27/compiling_freeradius_from_git_on_debian/ Note these both give you packages - so you can easily uninstall etc as required, or roll back to the distribution ones. Matthew -- Matthew Newton, Ph.D. <mcn4@le.ac.uk> Systems Specialist, Infrastructure Services, I.T. Services, University of Leicester, Leicester LE1 7RH, United Kingdom For IT help contact helpdesk extn. 2253, <ithelp@le.ac.uk>
Building your own packages on Debian/Ubuntu is trivial. There's really no excuse not to run the latest code.
Matthew, I agree with you, but not when the policy is to only use what is published on vendor (i.e. Ubuntu) repositories. But, like I say, that's not a discussion appropriate for the list, but rather one to be held with Ubuntu :-) Stefan -- This e-mail and any attachments may contain confidential, copyright and or privileged material, and are for the use of the intended addressee only. If you are not the intended addressee or an authorised recipient of the addressee please notify us of receipt by returning the e-mail and do not use, copy, retain, distribute or disclose the information in or attached to the e-mail. Any opinions expressed within this e-mail are those of the individual and not necessarily of Diamond Light Source Ltd. Diamond Light Source Ltd. cannot guarantee that this e-mail or any attachments are free from viruses and we cannot accept liability for any damage which you may sustain as a result of software viruses which may be transmitted in or with the message. Diamond Light Source Limited (company no. 4375679). Registered in England and Wales with its registered office at Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0DE, United Kingdom
participants (4)
-
Alan DeKok -
Matthew Newton -
Phil Mayers -
stefan.paetow＠diamond.ac.uk