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[Bug 1832210] Re: fwaas netfilter_log: incorrect decode of log prefix under python 3

 

# apt-cache policy python3-neutron-fwaas
python3-neutron-fwaas:
  Installed: 1:14.0.0-0ubuntu1.1~cloud0
  Candidate: 1:14.0.0-0ubuntu1.1~cloud0
  Version table:
 *** 1:14.0.0-0ubuntu1.1~cloud0 500
        500 http://ubuntu-cloud.archive.canonical.com/ubuntu bionic-proposed/stein/main amd64 Packages
        100 /var/lib/dpkg/status

Sample log messages:

Aug  5 09:17:33 juju-ccc3cd-bionic-stein-19 neutron-l3-agent: action=DROP, project_id=8d69996595bf43568a66f6e4edb551b7, log_resource_ids=['719c90e1-e6a4-49cb-a105-74cc86cff67f'], port=79704b31-91a4-42ae-b66f-e356b2811df0, pkt=ethernet(dst='fa:16:3e:97:b3:4f',ethertype=2048,src='fa:16:3e:41:6f:cc')ipv4(csum=20223,dst='192.168.21.92',flags=2,header_length=5,identification=3223,offset=0,option=None,proto=1,src='10.5.0.10',tos=0,total_length=84,ttl=63,version=4)icmp(code=0,csum=63684,data=echo(data=b'#\xf4G]\x00\x00\x00\x00\xc8\xc7\x03\x00\x00\x00\x00\x00\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f !"#$%&\'()*+,-./01234567',id=2227,seq=156),type=8)
Aug  5 09:17:34 juju-ccc3cd-bionic-stein-19 neutron-l3-agent: action=DROP, project_id=8d69996595bf43568a66f6e4edb551b7, log_resource_ids=['719c90e1-e6a4-49cb-a105-74cc86cff67f'], port=79704b31-91a4-42ae-b66f-e356b2811df0, pkt=ethernet(dst='fa:16:3e:97:b3:4f',ethertype=2048,src='fa:16:3e:41:6f:cc')ipv4(csum=20066,dst='192.168.21.92',flags=2,header_length=5,identification=3380,offset=0,option=None,proto=1,src='10.5.0.10',tos=0,total_length=84,ttl=63,version=4)icmp(code=0,csum=8550,data=echo(data=b'$\xf4G]\x00\x00\x00\x00\x9e%\x04\x00\x00\x00\x00\x00\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f !"#$%&\'()*+,-./01234567',id=2227,seq=157),type=8)
Aug  5 09:17:35 juju-ccc3cd-bionic-stein-19 neutron-l3-agent: action=ACCEPT, project_id=8d69996595bf43568a66f6e4edb551b7, log_resource_ids=['719c90e1-e6a4-49cb-a105-74cc86cff67f'], port=79704b31-91a4-42ae-b66f-e356b2811df0, pkt=ethernet(dst='fa:16:3e:97:b3:4f',ethertype=2048,src='fa:16:3e:41:6f:cc')ipv4(csum=2473,dst='192.168.21.92',flags=2,header_length=5,identification=20992,offset=0,option=None,proto=6,src='10.5.0.10',tos=0,total_length=60,ttl=63,version=4)tcp(ack=0,bits=2,csum=7323,dst_port=22,offset=10,option=[TCPOptionMaximumSegmentSize(kind=2,length=4,max_seg_size=8918), TCPOptionSACKPermitted(kind=4,length=2), TCPOptionTimestamps(kind=8,length=10,ts_ecr=0,ts_val=3542096121), TCPOptionNoOperation(kind=1,length=1), TCPOptionWindowScale(kind=3,length=3,shift_cnt=7)],seq=1338233633,src_port=46744,urgent=0,window_size=26754)


** Tags removed: verification-stein-needed
** Tags added: verification-stein-done

** Changed in: neutron-fwaas (Ubuntu Cosmic)
       Status: Fix Committed => Won't Fix

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https://bugs.launchpad.net/bugs/1832210

Title:
  fwaas netfilter_log: incorrect decode of log prefix under python 3

Status in Ubuntu Cloud Archive:
  Fix Released
Status in Ubuntu Cloud Archive rocky series:
  Fix Committed
Status in Ubuntu Cloud Archive stein series:
  Fix Released
Status in Ubuntu Cloud Archive train series:
  Fix Released
Status in neutron:
  Fix Released
Status in neutron-fwaas package in Ubuntu:
  Fix Released
Status in neutron-fwaas source package in Cosmic:
  Won't Fix
Status in neutron-fwaas source package in Disco:
  Fix Released
Status in neutron-fwaas source package in Eoan:
  Fix Released

Bug description:
  Under Python 3, the prefix of a firewall log message is not correctly
  decoded "b'10612530182266949194'":

  2019-06-10 09:14:34 Unknown cookie packet_in pkt=ethernet(dst='fa:16:3e:c6:58:5e',ethertype=2048,src='fa:16:3e:e0:2c:be')ipv4(csum=51290,dst='10.5.0.10',flags=2,header_length=5,identification=37612,offset=0,option=None,proto=6,src='192.168.21.182',tos=16,total_length=52,ttl=63,version=4)tcp(ack=3151291228,bits=17,csum=23092,dst_port=57776,offset=8,option=[TCPOptionNoOperation(kind=1,length=1), TCPOptionNoOperation(kind=1,length=1), TCPOptionTimestamps(kind=8,length=10,ts_ecr=1574746440,ts_val=482688)],seq=2769917228,src_port=22,urgent=0,window_size=3120)
  2019-06-10 09:14:34 {'prefix': "b'10612530182266949194'", 'msg': "ethernet(dst='fa:16:3e:c6:58:5e',ethertype=2048,src='fa:16:3e:e0:2c:be')ipv4(csum=51290,dst='10.5.0.10',flags=2,header_length=5,identification=37612,offset=0,option=None,proto=6,src='192.168.21.182',tos=16,total_length=52,ttl=63,version=4)tcp(ack=3151291228,bits=17,csum=23092,dst_port=57776,offset=8,option=[TCPOptionNoOperation(kind=1,length=1), TCPOptionNoOperation(kind=1,length=1), TCPOptionTimestamps(kind=8,length=10,ts_ecr=1574746440,ts_val=482688)],seq=2769917228,src_port=22,urgent=0,window_size=3120)"}
  2019-06-10 09:14:34 {'0bf81ded-bf94-437d-ad49-063bba9be9bb': [<neutron_fwaas.services.logapi.agents.drivers.iptables.log.LogPrefix object at 0x7f7563079048>, <neutron_fwaas.services.logapi.agents.drivers.iptables.log.LogPrefix object at 0x7f756308abe0>]}

  This results in the firewall log driver not being able to map the
  message to the associated port and log resources in neutron resulting
  in the 'unknown cookie packet_in' warning message.

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