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Werk #15367: Special characters in passwords in password store are now fully supported with active checks written in c

Component Checks & agents
Title Special characters in passwords in password store are now fully supported with active checks written in c
Date Jul 14, 2025
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
2.5.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT
2.4.0p9 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT
2.3.0p35 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT
2.2.0p45 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT

When using special characters in passwords stored in the password store for an active check that is implemented in c (for example the legacy active check check_http) the following error message was shown:

Invalid --pwstore= option: Password is too long for argument.

This was due to the c implementation calculated the length of the password in UTF-8 encoded bytes, but the python implementation counted UTF characters.

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