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[TACACS+] Add Bash TACACS+ plugin for per-command authorization. #8715

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merged 24 commits into from
Nov 13, 2021

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liuh-80
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@liuh-80 liuh-80 commented Sep 9, 2021

This pull request add a bash plugin for TACACS+ per-command authorization

Why I did it

  1. To support TACACS per command authorization, we check user command before execute it.
  2. Fix libtacsupport.so can't parse tacplus_nss.conf correctly issue:
    Support debug=on setting.
    Support put server address and secret in same row.
  3. Fix the parse_config_file method not reset server list before parse config file issue.

How I did it

The bash plugin will be called before every user command, and check user command with remote TACACS+ server for per-command authorization.

How to verify it

UT with CUnit cover all code in this plugin.
Also pass all current UT.

Which release branch to backport (provide reason below if selected)

N/A

Description for the changelog

Add Bash TACACS+ plugin.

A picture of a cute animal (not mandatory but encouraged)

@yozhao101
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/azp run

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Azure Pipelines successfully started running 1 pipeline(s).

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From: liuh-80 <[email protected]>
Date: Tue, 12 Oct 2021 10:09:10 +0800
Subject: [PATCH 3/4] Extract tacacs support functions into library.
Subject: [PATCH] Extract tacacs support functions into library.
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@qiluo-msft qiluo-msft Oct 30, 2021

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Extract tacacs support functions into library.

What is the intention of changing this file? Is it relating to src/tacacs/bash_tacplus? #Pending

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There are some code bug in this patch file:

  1. When parse nss_tacplus.conf, can't get TACACS server passkey, because the file format little different with upstream file format.
  2. Not release tacacs server data before load tacacs config file.

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For the code change in this file, please check this PR: https://github.com/liuh-80/pam_tacplus/pull/4/files

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1 comments about code position fixed in this patch file.
the other comments about debug code change replied, it's necessary for debug.

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According to discussion, update the patch and this code to only support debug, which is the upstream project beahvior.

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Discussed offline: we will not use pam_tacplus function to parse nss_tacplus config in future. Then we will abandon this patch.

@liuh-80 liuh-80 marked this pull request as ready for review November 8, 2021 08:52
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@liuh-80 liuh-80 merged commit ff09b8b into sonic-net:master Nov 13, 2021
liuh-80 added a commit to liuh-80/sonic-buildimage that referenced this pull request Jul 11, 2023
liuh-80 added a commit to liuh-80/sonic-buildimage that referenced this pull request Jul 11, 2023
qiluo-msft pushed a commit that referenced this pull request Jul 13, 2023
Fix libtacsupport.so  can't parse tacplus_nss.conf issue and not reset server list before parse config file issue.

##### Work item tracking
- Microsoft ADO **(number only)**: 24433713

#### Why I did it
1. Fix libtacsupport.so can't parse tacplus_nss.conf correctly issue:
            Support debug=on setting.
            Support put server address and secret in same row.
2. Fix the parse_config_file method not reset server list before parse config file issue.

#### How I did it
Fix libtacsupport.so  can't parse tacplus_nss.conf issue and not reset server list before parse config file issue.

#### How to verify it
UT with CUnit cover all code in this plugin.
Also pass all current UT.

#### Which release branch to backport (provide reason below if selected)
    N/A

#### Tested branch (Please provide the tested image version)
Extract tacacs support functions into library, this will share TACACS config file parse code with other project.
Also fix memory leak issue in parse config code.

- [ ]  SONiC.202012-15723.312602-e230e2d3e

#### Description for the changelog
Fix libtacsupport.so  can't parse tacplus_nss.conf issue and not reset server list before parse config file issue.
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4 participants