Commits on Mar 21, 2024

1. Fix support for ncat --vsock -l <port> …

   Commit 04c4c70 ("Support decimal integer representation of target
   addresses. Fixes nmap#375") introduced a regression when the user specifies
   only the port using AF_VSOCK in listening (e.g. `ncat --vsock -l 1234`).
   
   Before that commit, we supported this invocation, but currently we
   interpret the parameter as CID. Alternatively, the version with -p is
   still working (e.g. `ncat --vsock -l -p 1234`).
   
   Having documented this usage in the manpage as well, it's better to fix
   it and support it again.
   
   Tested locally (without VMs involved), using CID = 1 (loopback) in this
   way:
   
       shell1$ ncat --vsock -l 1234
   
       shell2$ ncat --vsock 1 1234
   
       # Note: If CID 1 is not supported and the previous command fails,
       # it means that you have to manually load `vsock_loopback` kernel
       # module (usually it is autoamtically loaded when AF_VSOCK is used
       # if the `vsock` kernel module is not already loaded in the system)
   
   Reported-by: Luigi Leonardi <luigi.leonardi@outlook.com>
   Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>

   

   stefano-garzarella committed Mar 21, 2024
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