[v14] Prevent .tsh/environment values from overloading prior set values#34626
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jentfoo merged 3 commits intobranch/v14from Nov 16, 2023
Merged
[v14] Prevent .tsh/environment values from overloading prior set values#34626jentfoo merged 3 commits intobranch/v14from
.tsh/environment values from overloading prior set values#34626jentfoo merged 3 commits intobranch/v14from
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It's not possible to have duplicate environment values within an environment. And in fact the last value in the string slice will be preserved. Prior to this change that allows users to possibly change any environment values through the use of the `.tsh/environment` file. This is within user level control, where other environment value sources originate from a more protected location (for example the PAM configuration). Prior to this change that allows users to possibly change any environment passed configuration through the use of the `.tsh/environment` file. This change makes it so that the administrative set values will be preferred, and any duplicate records will be ignored.
This change updates `SafeEnv` to be allow the caller to select if the value should be checked for duplicates. We then leverage this to avoid this check when sourced from a trusted source. But then exclude potential duplicates when sourced from .tsh/environment file or the local environment.
rosstimothy
approved these changes
Nov 15, 2023
zmb3
approved these changes
Nov 16, 2023
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Backport #34277 to branch/v14
changelog: Environment values can not be overridden from the .tsh/environment file, only unique keys will be inserted into the environment.