In practical terms, passt doesn't benefit from the additional
protection offered by the AGPL over the GPL, because it's not
suitable to be executed over a computer network.

Further, restricting the distribution under the version 3 of the GPL
wouldn't provide any practical advantage either, as long as the passt
codebase is concerned, and might cause unnecessary compatibility
dilemmas.

Change licensing terms to the GNU General Public License Version 2,
or any later version, with written permission from all current and
past contributors, namely: myself, David Gibson, Laine Stump, Andrea
Bolognani, Paul Holzinger, Richard W.M. Jones, Chris Kuhn, Florian
Weimer, Giuseppe Scrivano, Stefan Hajnoczi, and Vasiliy Ulyanov.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>

That's the default port for iperf3, which also means that it's quite
likely in use on my test machine. Use different port numbers: recycle
the scheme we use in tests for passt and pasta's demo, use 5221-5224
(a bit shorter) for the slirp4netns container in Podman's demo.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>

A cd to __STATEDIR__ results in a rather long command, that's not
very readable. Jump between directories using .. and relative paths,
once we're there.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>

Avoiding putting them in bare /tmp means they will be automatically
cleaned up with everything else.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

Instead of using the 'temp' and 'tempdir' DSL directives to create
temporary files, use fixed paths relative to __STATEDIR__.  This has two
advantages:
  1) The files are automatically cleaned up if the tests fail (and even if
     that doesn't work they're easier to clean up manuall)
  2) When debugging tests it's easier to figure out which of the temporary
     files are relevant to whatever's going wrong

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

For some reason using https to clone from the passt git repo is very slow,
at least from network-distant places.  Use git protocol in the demo instead
to avoid a tedious wait to get the source.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

Commit 41c02e10 ("tests: Use nmap-ncat instead of openbsd netcat for pasta
tests") updated the pasta tests to use the nmap version of ncat instead of
the openbsd version, for greater portability.

For some upcoming changes, however, we'll be wanting to use socat.
"socat" can do everything "ncat" can and more, so let's move all the
tests using host tools (either directly on the host or via mbuto
generated images) to using socat instead.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
[sbrivio: Fix a typo in port specification, 31337 instead of x31337]
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>

This was dependent on my own environment where I usually have /sbin
in $PATH. If that's missing, given that we're running dhclient as
user, we won't find it.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>

Parsing pstree's output is somewhat unreliable: there might be
multiple pasta instances running on the same host, and depending on
the overall output width pstree might truncate some branches.

Ask pasta to save its PID to file, and use that as parameter for
pgrep to find the PID of the interactive shell whose user and network
namespaces we want to join.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>

Currently test/run uses wildcards to run all of the tests in a directory.
However, that wildcard list is filtered down by the "onlyfor" directives
in the test files... usually to a single file.

Therefore, just explicitly list the files we *really* want to run for this
test mode.  This makes it easier to see at the top level what tests will
be executed, and to change that list temporarily while debugging specific
failures.

This means the "onlyfor" directive no longer has any purpose, and we can
remove it.  "onlyfor" was also the only used of the $MODE variable, so we
can remove that too.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>