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  1. Jenkins
  2. JENKINS-59933

Injected array variables are not available in {bash zxh} shell

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      Description

      Main problem: Injected array variables are not available in shell.

      Injecting variable containing arrays such as the below, fails on bash, zxh and other shells.

       

      test[0]=string1
      test[1]=string2
      foo=bar
      

      Attempting to use these imported variables fails like this:

      >echo ${test[0]}
      >echo ${test[1]}
      >echo ${foo}
      bar

      Normally there are two categories of variables available in shell: shell variables and Environment variables, where shell variables can also be exported to become Environment variables.

      However, when testing the output of five commands that can list variables, it seems that injected array variables falls into a third category, as the array variables are available as Environmental variables, but not as shell variables:

      1. `declare -p`, `declare -xp` and `set` lists no injected array variables
      2. `printenv` and `env` lists injected array variables, as individual entries.

       

      I've implemented workaround, which may be integrated into the plugin, that can be used to fix the main issue. It's available as a gist on github:

      https://gist.github.com/f-steff/1181f8f5907ae9da73779aba8182df3b#file-fixinjectedarraysinbash-sh

      Using this workaround, the output from my test injection above looks like this:

      >. ./FixInjectedArraysInBash.sh
      >echo ${test[0]}
      string1
      >echo ${test[1]}
      string2
      >echo ${foo}
      bar

      Second related problem.

      A warning may be needed when this happens!

      When importing/declaring variables like this:

      test[0]=string1
      test[1]=string2
      test=string3
      

      will result in an unintended overwriting of test[0], resulting in an shell array variable declared like this: 

      • test=([0]="string3" [1]="string2")

       
       

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            Assignee:
            Unassigned Unassigned
            Reporter:
            fsteff Flemming Steffensen
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              Created:
              Updated: