Capture warnings into log-helper#799
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christian-intra2net wants to merge 8 commits intodecalage2:masterfrom
Open
Capture warnings into log-helper#799christian-intra2net wants to merge 8 commits intodecalage2:masterfrom
christian-intra2net wants to merge 8 commits intodecalage2:masterfrom
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Encountered an example where a 3rd-party library issued a warning that messed up the json output. Create test to reproduce this.
We set logging.captureWarnings to True and use our logging framework for python's builtin warnings logger. Warnings from that logger will have "type=warning" per default (as opposed to "type=msg").
Warning message includes source file and line number, hope this is not dependent on python version..
Need to make sure that json output is formatted since e.g. warning messages
are created like this:
log.warning('%s', actual_message)
so without proper formatting the message is just "%s".
Also test that exception info is added as usual.
Use a standard logging.Formatter to do %-formatting and other stuff (i.e. the regular formatter job) before converting to Json.
If there is an error in log-handling (e.g. wrong args to logger call) do not fail or raise but produce something helpful
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Warnings can mess-up the output of oletools, a recent example is the Deprecation Warning of cryptography for python2. Human readers have no trouble ignoring these but automated tests or other tools that use oletools in a pipeline, in particular with json-formatted output, get into trouble.
However, python offers a solution, which is logging.captureWarnings. By enabling this, the log-helper can deal with unexpected warnings.