Bugfix/validate-user-provided-file-object-paths - #1197
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…onally restricting path name content with BACNET_FILE_POSIX_PATH_RESTRICTED define.
…eFile example applications. Prohibits use of relative and absolute file paths when BACNET_FILE_POSIX_PATH_RESTRICTED is non-zero.
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Secured BACnet file object pathname received from BACnet AtomicWriteFile
or ReadFile service used without validation which was vulnerable to
directory traversal attacks.
Added POSIX file path name checking for AtomicReadFile and AtomicWriteFile
example applications. Prohibits use of relative and absolute file paths
when BACNET_FILE_POSIX_PATH_RESTRICTED is non-zero.