Werk #6869: Fixed all crashes in Windows Agent caused by UTF-16 to UTF-8 conversion

Component Checks & agents
Title Fixed all crashes in Windows Agent caused by UTF-16 to UTF-8 conversion
Date Feb 11, 2019
Checkmk Edition Checkmk Raw (CRE)
Checkmk Version 1.5.0p12 1.6.0b1
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed

Some Windows checks may produce invalid UTF-16 symbols or symbols which are difficult to convert into UTF-8 using standard library. As a result the Agent may crash with exception 'range_error' during 'to_bytes' call.

Now in such cases the Agent uses native Win32 API call avoiding the crash. Provided output from above mentioned Win32 API call conforms to the UTF-8 standard.

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