Add interface in libModSecurity for reopening log files

[victorhora]

This is related with feature request https://github.com/SpiderLabs/ModSecurity-nginx/issues/121

Modsecurity should reopen audit log on these two signals for proper logrotate operation.

As noted at https://github.com/SpiderLabs/ModSecurity-nginx/issues/121#issuecomment-420619429, we could leverage a similar approach as described at https://forum.nginx.org/read.php?29,247488,247500#msg-247500 (i.e. use standard nginx API to open some stub-file with ngx_conf_open_file(), add required handler, and use it for detecting USR1 and HUP signals from master process)

But it seems like libModSecurity currently does not have a nice interface to initiate audit/debug log files reopening by connector's request.

There's a PoC on how we could accomplish that on the connector at https://github.com/SpiderLabs/ModSecurity-nginx/issues/121#issuecomment-442416602 as a starting point.

[remort]

Any news up on that?

[baptiste-fourmont]

Any news?

[airween]

Hi @baptiste-fourmont,

Any news?

Unfortunately not. If you have any idea how can we solve this, feel free to open a PR. But I try to keep this on the table...