When we see an offered HTLC onchain, we need to use the preimage if we
know it. So we dump all the known HTLC preimages at startup, and send
new ones as we discover them.
This doesn't cover preimages we know because we're the final
recipient; that can happen if an HTLC hasn't been irrevocably
committed yet. We'll do that in a followup patch.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
For non-delayed HTLC success spends, we have a similar pattern ("<sig>
<preimage> <wscript>") so a we want to use the same function.
The other routines don't say "witness" in them, and should.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
If the HSM is slow it might happen that the timestamp has changed the
second time we come around, so we generate the timestamp externally
and pass it in so we're sure it won't change between calls.
Reported-by: Rusty Russell
Signed-off-by: Christian Decker <decker.christian@gmail.com>
lightningd can crash on shutdown if it's in the middle of getchaintips;
we free the conn, the finished callback is called (process_chaintips),
and it reports that it received an empty result.
The simplest fix is to set a flag in the struct bitcoind destructor,
and avoid the callback.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Either when it exits with a signal, or sends an error status message.
Then we make test_lightningd.py use it.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We simply kill lightningd; we should stop it properly and have a timeout
to kill it if that fails. However, that's beyond my python skills :(
So we just look for crash.log. Unfortunately, we usually kill
lightningd before it's finished writing it. So we look for it and
don't kill lightningd, just wait in this case.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This change is really to allow us to have a --dev-fail-on-subdaemon-fail option
so we can handle failures from subdaemons generically.
It also neatens handling so we can have an explicit callback for "peer
did something wrong" (which matters if we want to close the channel in
that case).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
1. Remove reference to old $(LIGHTNINGD_OLD_LIB_OBJS) var (in handshaked too).
2. Make check depend directly on unit tests, insteadof weird lightningd/tests
variable.
3. check-source-bolt and check-whitespace are automatic for $(ALL_TEST_PROGRAMS)
so we don't need them here.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This is the step where we broadcast the transaction to the network and
a nice place to extract the change from the transaction.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
We hit:
assert(!peer->handle_master_reply);
#4 0x000055bba3b030a0 in master_sync_reply (peer=0x55bba41c0030,
msg=0x55bba41c6a80 "", replytype=WIRE_CHANNEL_GOT_COMMITSIG_REPLY,
handle=0x55bba3b041cf <handle_reply_wake_peer>) at channeld/channel.c:518
#5 0x000055bba3b049bc in handle_peer_commit_sig (conn=0x55bba41c10d0,
peer=0x55bba41c0030, msg=0x55bba41c6a80 "") at channeld/channel.c:959
#6 0x000055bba3b05c69 in peer_in (conn=0x55bba41c10d0, peer=0x55bba41c0030,
msg=0x55bba41c67c0 "") at channeld/channel.c:1339
#7 0x000055bba3b123eb in peer_decrypt_body (conn=0x55bba41c10d0,
pcs=0x55bba41c0030) at common/cryptomsg.c:155
#8 0x000055bba3b2c63b in next_plan (conn=0x55bba41c10d0, plan=0x55bba41c1100)
at ccan/ccan/io/io.c:59
We got a commit_sig from the peer while waiting for the master to
reply to acknowledge the commitsig we want to send
(handle_sending_commitsig_reply).
The fix is to go always talk to the master synchronous, and not try to
process anything but messages from the master daemon. This avoids the
whole class of problems.
There's a fairly simple way to do this, as ccan/io lets you override
its poll call: we process any outstanding master requests there, or
add the master fd to the pollfds array.
Fixes: #266
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
It's no longer used and we definitely do not want to run with an
outdated or future db, so we'll terminate if we can't upgrade or
the version is newer than what we understand.
Signed-off-by: Christian Decker <decker.christian@gmai.com>
For the permfail tests the sendpay call is supposed to fail, so this
was printing stacktraces upon success. Running in futures captures any
thrown exceptions and rethrows them when calling `result()`, in our
case we just ignore them.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
So far we were always using the deadline in the announcements, that's
obviously not good, so this introduces the parameter as per spec.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
We weren't killing it. Eventually it would die, and peer_owner_finished()
would access subd->peer->owner, but that peer was freed already.
Closes: #261
Reported-by: Christian Decker <decker.christian@gmail.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
To reproduce the next bug, I had to ensure that one node keeps thinking it's
disconnected, then the other node reconnects, then the first node realizes
it's disconnected.
This code does that, adding a '0' dev-disconnect modifier. That means
we fork off a process which (due to pipebuf) will accept a little
data, but when the dev_disconnect file is truncated (a hacky, but
effective, signalling mechanism) will exit, as if the socket finally
realized it's not connected any more.
The python tests hang waiting for the daemon to terminate if you leave
the blackhole around; to give a clue as to what's happening in this
case I moved the log dump to before killing the daemon.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
In this case, we unset the old subd->peer, then freed subd.
peer_owner_finished dereferenced subd->peer->owner, and boom:
test_disconnect_funder (__main__.LightningDTests) ... Fatal signal 11. Log dumped in crash.log
------------------------------- Valgrind errors --------------------------------
Valgrind error file: valgrind-errors.2882
==2882== Invalid read of size 8
==2882== at 0x413F74: peer_owner_finished (peer_control.c:679)
==2882== by 0x41EA2C: destroy_subd (subd.c:381)
==2882== by 0x459700: notify (tal.c:240)
==2882== by 0x459BB1: del_tree (tal.c:400)
==2882== by 0x459FC0: tal_free (tal.c:509)
==2882== by 0x413796: peer_reconnected (peer_control.c:493)
==2882== by 0x413A6A: add_peer (peer_control.c:592)
==2882== by 0x40ED1F: handshake_succeeded (new_connection.c:186)
==2882== by 0x41E3DD: sd_msg_reply (subd.c:262)
==2882== by 0x41E6BB: sd_msg_read (subd.c:318)
==2882== by 0x41E4E6: read_fds (subd.c:283)
==2882== by 0x44DEB4: next_plan (io.c:59)
==2882== Address 0x838 is not stack'd, malloc'd or (recently) free'd
==2882==
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Addresses #207 by adding a method to retrieve available funds from the
wallet.
Reported-by: @jl777
Signed-off-by: Christian Decker <decker.christian@gmail.com>
This was causing some compilation trouble on 32bit systems, see #256.
Reported-by: @shsmith
Signed-off-by: Christian Decker <decker.christian@gmail.com>
The logic of dispatching the announcement_signatures message was
distributed over several places and daemons. This aims to simplify it
by moving it all into `channeld`, making peer_control only report
announcement depth to `channeld`, which then takes care of the
rest. We also do not reuse the funding_locked tx watcher since it is
easier to just fire off a new watcher with the specific purpose of
waiting for the announcement_depth.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
Rusty Russell
Christian Decker