Checkmk Werk 15417: mk_logwatch: Correctly handle UNIX paths with non-UTF-8 characters

ID: 15417 Title: mk_logwatch: Correctly handle UNIX paths with non-UTF-8 characters Component: Checks & agents Level: 1 Class: Bug fix Version: 2.3.0b1 On UNIX, filenames may consist of arbitrary bytes. To display filenames in Checkmk, the mk_logwatch plugin assumes a UTF-8 encoding and previously replaced each non-UTF-8 (hence non-printable) byte with the replacement character �.<br> This lead to the problem that multiple filenames were represented by the same name in Checkmk.<br> As a result, the logfiles got displayed in one service, with the logfile contents merged to one log view. In order to handle this situation, mk_logwatch now uses a backslash escape sequence instead of the replacement character.<br> Non-UTF-8 bytes are now represented by their hexadecimal value with a <tt>\x</tt> prefix.<br> E.g., monitoring the two files (as shown with <tt>ls</tt>, i.e., with octal escape sequence) <tt>'my'$'\300\201''file'</tt> and <tt>'my'$'\300\200''file</tt> now yields two services <i>Log my\xc0\x80file</i> and <i>Log my\xc0\x81file</i>, while it used to yield only one service <i>Log my��file</i> before. Due to the new service name, you have to discover the newly named services if you are affected by this change.<br>