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Maniphest T685

Python environment lacks definition of vyos_libexec_dir when calling os.system()
Resolved (N/A)PublicBUG
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Description

Rewriting the SNMP configuration as XML/Python requires that the running VyOS configuration is altered by the python script. This is aweful.

The reason is that if a user specifies a plaintext password it will be converted to an encrypted one during SNMP startup. Later this encrypted pasword is re-read and set as encrypted-key in the running config whereas the plaintext-key node is deleted.

Calling

os.system('/opt/vyatta/sbin/my_delete service snmp v3 user "nms" auth plaintext-key')

Resulted in:

sh: /validate-value.py: No such file or directory

The available environment has been extracted using os.system('env')

image.png (963×948 px, 108 KB)

The current workaround in https://github.com/vyos/vyos-1x/commit/0d38d4f13c24450aaa7b1a0a748e5f007b73ba8f is more than ugly (definition of the environment variable before calling the script)

Details

Difficulty level
Hard (possibly days)
Version
1.2.0-rolling+201806050337
Why the issue appeared?
Will be filled on close
Is it a breaking change?
Perfectly compatible
Issue type
Internal change (not visible to end users)

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Event Timeline

c-po created this task.Jun 5 2018, 7:43 PM
c-po added a parent task: T652: Rewrite service snmp in new style XML interface definition.Jun 5 2018, 7:47 PM
c-po updated the task description. (Show Details)Jun 5 2018, 7:49 PM
syncer triaged this task as Low priority.Jun 10 2018, 2:24 AM
dmbaturin edited projects, added VyOS 1.2 Crux (VyOS 1.2.0-rc1); removed VyOS 1.2 Crux.Sep 2 2018, 9:48 PM
dmbaturin subscribed.

@c-po You've found a workaround, right?

c-po added a comment.Sep 3 2018, 5:07 AM

Yes, just pass the variable on calls to os.system()

c-po added a comment.Sep 3 2018, 12:53 PM

@dmbaturin the "workaround" and implementation is IMHO super bad (https://github.com/vyos/vyos-1x/blob/current/src/conf_mode/snmp.py#L808-L813) as it uses /opt/vyatta/sbin/my_set or /opt/vyatta/sbin/my_delete.

Can't we use vyos.configtree in a Python script to replace those bad shell calls? I think this would be the best solution!

In other words, does vyos.configtree support the effective configuration?

syncer edited projects, added VyOS 1.2 Crux (VyOS 1.2.0-rc2); removed VyOS 1.2 Crux (VyOS 1.2.0-rc1).Oct 9 2018, 6:42 AM
syncer edited projects, added VyOS 1.2 Crux (VyOS 1.2.0-rc3); removed VyOS 1.2 Crux (VyOS 1.2.0-rc2).Oct 13 2018, 9:28 AM
syncer edited projects, added VyOS 1.2 Crux (VyOS 1.2.0-rc4); removed VyOS 1.2 Crux (VyOS 1.2.0-rc3).Oct 15 2018, 10:15 PM
syncer edited projects, added VyOS 1.2 Crux (VyOS 1.2.0-rc5); removed VyOS 1.2 Crux (VyOS 1.2.0-rc4).Oct 24 2018, 4:39 PM
syncer edited projects, added VyOS 1.2 Crux (VyOS 1.2.0-rc6); removed VyOS 1.2 Crux (VyOS 1.2.0-rc5).Oct 29 2018, 6:16 PM
pasik subscribed.Nov 4 2018, 11:24 AM
syncer edited projects, added VyOS 1.2 Crux (VyOS 1.2.0-rc7); removed VyOS 1.2 Crux (VyOS 1.2.0-rc6).Nov 6 2018, 12:57 AM
syncer edited projects, added VyOS 1.2 Crux (VyOS 1.2.0-rc8); removed VyOS 1.2 Crux (VyOS 1.2.0-rc7).Nov 13 2018, 3:48 AM
syncer edited projects, added VyOS 1.2 Crux (VyOS 1.2.0-rc9); removed VyOS 1.2 Crux (VyOS 1.2.0-rc8).Nov 20 2018, 12:44 PM
syncer edited projects, added VyOS 1.2 Crux (VyOS 1.2.0-rc10); removed VyOS 1.2 Crux (VyOS 1.2.0-rc9).Nov 27 2018, 12:03 AM
syncer edited projects, added VyOS 1.2 Crux ( VyOS 1.2.0-rc11); removed VyOS 1.2 Crux (VyOS 1.2.0-rc10).Dec 5 2018, 11:58 PM
syncer edited projects, added VyOS 1.2 Crux ( VyOS 1.2.0-EPA); removed VyOS 1.2 Crux ( VyOS 1.2.0-rc11).Dec 21 2018, 10:07 AM
syncer edited projects, added VyOS 1.2 Crux (VyOS 1.2.0-EPA2); removed VyOS 1.2 Crux ( VyOS 1.2.0-EPA).Jan 1 2019, 6:10 PM
syncer edited projects, added VyOS 1.2 Crux (VyOS 1.2.0-EPA3); removed VyOS 1.2 Crux (VyOS 1.2.0-EPA2).Jan 3 2019, 1:54 PM
syncer changed the task status from Open to In progress.Feb 8 2019, 12:03 AM
syncer assigned this task to dmbaturin.
syncer raised the priority of this task from Low to Normal.
syncer edited projects, added VyOS 1.3 Equuleus; removed VyOS 1.2 Crux (VyOS 1.2.0-EPA3).
zsdc changed Difficulty level from Unknown (require assessment) to Hard (possibly days).Mar 11 2021, 2:19 PM
zsdc set Is it a breaking change? to Unspecified (possibly destroys the router).
dmbaturin added a project: test.Jul 29 2021, 1:03 PM
dmbaturin closed this task as Resolved.Jul 29 2021, 2:40 PM
dmbaturin changed the task status from Resolved to Resolved N/A.
dmbaturin changed Is it a breaking change? from Unspecified (possibly destroys the router) to Perfectly compatible.Sep 3 2021, 12:01 PM
dmbaturin set Issue type to Internal change (not visible to end users).
dmbaturin edited projects, added VyOS 1.3 Equuleus (1.3.0-epa1); removed test, VyOS 1.3 Equuleus.Sep 10 2021, 6:10 AM