Commits on Feb 12, 2022

1. Add ebpf based dns lookup hooks …

   When using DoT or DoH opensnitch cannot intercept the dns packets.
   Therfore the UI always shows IP addresses instead of hostnames. To fix
   this issue an ebpf (uprobe) filter was created to hook getaddrinfo and
   gethostbyname calls.
   
   In order to be independent of libbcc an additional module was added to
   ebpf_prog. Without libbcc the libc function offsets must be resolved
   manually. In order to find the loaded glibc version some cgo code was
   added.

   

   calesanz committed Feb 12, 2022
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