NAME

       execute-json-from-fifo - Read a fifo stream of POSIX commands serialized as JSON and run them.

SYNOPSIS

       execute-json-from-fifo FIFO

DESCRIPTION

       This is a very simple script which executes commands passed as JSON to a given named pipe. This is useful
       when one needs to create a super-privileged container which is able to run commands on the  host  system.
       It can also be used when one needs to give a container the ability to launch commands as a non-privileged
       user on the host.

       To launch this script run:

              $ execute-json-from-fifo PATH_TO_NAMED_PIPE

       You can now send commands to the pipe. The protocol is as follows:

              {"command":["echo", "some", "command"], "stdin":"path", "stdout":"path", "stderr":"path", "cwd":"path", "env":{"ENVVAR":"value"}}

       Note: the protocol is newline delimited. So never include new-lines in the command objects.

       stdin, stdout, stderr, cwd and env are all optional.

       Passing ["exit"] to command stops the script.

AUTHOR

       Timothy Hobbs (timothy.hobbs.cz)

                                                  09 April 2016                                           man(1)