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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi all. I hate to be a pest…but I cannot find anything really on what I’m trying to do.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>My setup is a wireless AP (running OpenWRT) using WPA2 – 802.1x authentication, to Freeradius. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I’m trying to use a Python program as an “external authenticator”, so I can check various things with the username and password in my already existing authentication schemes. I thought this would be easy…I was wrong. Through some trial and error, I’ve determined that the Python app needs to return “Cleartext-Password” with “some value”…that value is unclear to me since I’ve returned anything and it takes it.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I’ve tried to mimic the setup at <a href="http://wiki.freeradius.org/Rlm_perl">http://wiki.freeradius.org/Rlm_perl</a> , but using Python instead of perl.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>My question to everyone is this: Is there an example program, in Python or perl, that is complete and works somewhere? Everything I’ve seen just says things like “your code here”, and never specifies what the returns need to be formatted like and/or include for EAP. I had been assuming that I just simply had to return a simple “OK” or “FAIL”, but that’s clearly not right.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I’m including some testing below for those who want to see more of what I’m doing.<o:p></o:p></p><p class=MsoNormal>Thanks,<o:p></o:p></p><p class=MsoNormal>--Brian<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>When I run radtest now, here’s what I get (showing that there’s an EAP error, but it does give an Access-Accept):<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>[root@xxxx: /usr/local/etc/raddb]#radtest -t eap-md5 user pass 127.0.0.1 0 testing123<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>Sending Access-Request packet to host 127.0.0.1 port 1812, id=49, length=0<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'> User-Name = "user"<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'> User-Password = "pass"<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'> NAS-IP-Address = 192.168.12.18<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'> NAS-Port = 0<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'> EAP-Code = Response<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'> EAP-Type-Identity = "user"<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'> Message-Authenticator = 0x00<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'> EAP-Message = 0x023000090175736572<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>rlm_eap: EAP-Message not found<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>Received Access-Accept packet from host 127.0.0.1 port 1812, id=49, length=20</span><br><br><o:p></o:p></p><p class=MsoNormal>Here’s the function that’s running in my python program:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>def authorize(p):<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'> print "*** authorize ***"<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'> print<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'> radiusd.radlog(radiusd.L_INFO, '*** radlog call in authorize ***')<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'> print<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'> print p.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'> sys.stdout.flush()<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'> return (radiusd.RLM_MODULE_OK,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'> (('Cleartext-Password','pass'),),<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'> (('Auth-Type', 'python'),))<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Here’s the output from radius –X :<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>rad_recv: Access-Request packet from host 127.0.0.1 port 49493, id=49, length=85<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'> User-Name = "user"<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'> User-Password = "pass"<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'> NAS-IP-Address = 192.168.12.18<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'> NAS-Port = 0<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'> Message-Authenticator = 0x4b08938d78fe92d1f7a6d60152c9fbc0<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'> EAP-Message = 0x023000090175736572<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'># Executing section authorize from file /usr/local/etc/raddb/sites-enabled/default<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>+- entering group authorize {...}<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>++[preprocess] returns ok<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>++[chap] returns noop<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>++[mschap] returns noop<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>++[digest] returns noop<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>[suffix] No '@' in User-Name = "user", looking up realm NULL<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>[suffix] No such realm "NULL"<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>++[suffix] returns noop<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>[eap] EAP packet type response id 48 length 9<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>[eap] No EAP Start, assuming it's an on-going EAP conversation<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>++[eap] returns updated<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>[files] users: Matched entry DEFAULT at line 1<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>++[files] returns ok<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>*** authorize ***<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>*** radlog call in authorize ***<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>(('User-Name', '"user"'), ('User-Password', '"pass"'), ('NAS-IP-Address', '192.168.12.18'), ('NAS-Port', '0'), ('Message-Authenticator', '0x4b08938d78fe92d1f7a6d60152c9fbc0'), ('EAP-Message', '0x023000090175736572'), ('EAP-Type', 'Identity'))<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>rlm_python:authorize: 'Cleartext-Password' = 'pass'<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>rlm_python:authorize: 'Auth-Type' = 'python'<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>++[python] returns ok<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>++[expiration] returns noop<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>++[logintime] returns noop<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>[pap] WARNING! No "known good" password found for the user. Authentication may fail because of this.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>++[pap] returns noop<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>Found Auth-Type = EAP<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>Found Auth-Type = Python<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>Warning: Found 2 auth-types on request for user 'user'<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'># Executing group from file /usr/local/etc/raddb/sites-enabled/default<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>+- entering group Python {...}<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>*** authenticate ***<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>*** radlog call in authenticate ***<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>(('User-Name', '"user"'), ('User-Password', '"pass"'), ('NAS-IP-Address', '192.168.12.18'), ('NAS-Port', '0'), ('Message-Authenticator', '0x4b08938d78fe92d1f7a6d60152c9fbc0'), ('EAP-Message', '0x023000090175736572'), ('EAP-Type', 'Identity'))<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>++[python] returns ok<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'># Executing section post-auth from file /usr/local/etc/raddb/sites-enabled/default<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>+- entering group post-auth {...}<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>++[exec] returns noop<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>Sending Access-Accept of id 49 to 127.0.0.1 port 49493<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>Finished request 0.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>Going to the next request<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>Waking up in 4.9 seconds.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>Cleaning up request 0 ID 49 with timestamp +5<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>Ready to process requests.<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>When I try to connect from my iPad, it just hangs…probably because it’s waiting for that “EAP-Message” that radtest was complaining about.<o:p></o:p></p></div></body></html>