We'd usually commit to the db soon, but there's a window where it
could be missed.
Also moves loc into the block it's used and make it tmpctx to avoid
an explicit free.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Without this, we can get errors on shutdown:
Valgrind error file: valgrind-errors.27444
==27444== Invalid read of size 8
==27444== at 0x1950E2: secp256k1_pubkey_load (secp256k1.c:127)
==27444== by 0x19CF87: secp256k1_ec_pubkey_serialize (secp256k1.c:189)
==27444== by 0x14FED9: towire_pubkey (towire.c:59)
==27444== by 0x15AAFB: towire_gossipctl_peer_disconnected (gen_gossip_wire.c:969)
==27444== by 0x1253EF: opening_channel_errmsg (opening_control.c:526)
==27444== by 0x1386A3: destroy_subd (subd.c:589)
==27444== by 0x18222C: notify (tal.c:240)
==27444== by 0x1826E1: del_tree (tal.c:400)
==27444== by 0x182733: del_tree (tal.c:410)
==27444== by 0x182733: del_tree (tal.c:410)
==27444== by 0x182B1F: tal_free (tal.c:511)
==27444== by 0x11FC53: main (lightningd.c:410)
==27444== Address 0x6c3af98 is 72 bytes inside a block of size 216 free'd
==27444== at 0x4C30D3B: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==27444== by 0x1827BC: del_tree (tal.c:421)
==27444== by 0x182B1F: tal_free (tal.c:511)
==27444== by 0x11F3C7: shutdown_subdaemons (lightningd.c:211)
==27444== by 0x11FC27: main (lightningd.c:406)
==27444== Block was alloc'd at
==27444== at 0x4C2FB0F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==27444== by 0x182296: allocate (tal.c:250)
==27444== by 0x182863: tal_alloc_ (tal.c:448)
==27444== by 0x12F2DF: new_peer (peer_control.c:74)
==27444== by 0x125600: new_uncommitted_channel (opening_control.c:576)
==27444== by 0x125870: peer_accept_channel (opening_control.c:668)
==27444== by 0x13032A: peer_sent_nongossip (peer_control.c:427)
==27444== by 0x116B9E: peer_nongossip (gossip_control.c:60)
==27444== by 0x116F2B: gossip_msg (gossip_control.c:172)
==27444== by 0x138323: sd_msg_read (subd.c:503)
==27444== by 0x137C02: read_fds (subd.c:330)
==27444== by 0x175550: next_plan (io.c:59)
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Also report tx and txid, and whether we closed unilaterally or
bilaterally, if we could close the channel.
Also make a manpage.
Fixes: #1207Fixes: #714Fixes: #622
We had an intermittant test failure, where the fee we negotiated was
further from our ideal than the final commitment transaction. It worked
fine if the other side sent the mutual close first, but not if we sent
our unilateral close first.
ERROR: test_closing_different_fees (__main__.LightningDTests)
----------------------------------------------------------------------
Traceback (most recent call last):
File "tests/test_lightningd.py", line 1319, in test_closing_different_fees
wait_for(lambda: p.rpc.listpeers(l1.info['id'])['peers'][0]['channels'][0]['status'][1] == 'ONCHAIN:Tracking mutual close transaction')
File "tests/test_lightningd.py", line 74, in wait_for
raise ValueError("Error waiting for {}", success)
ValueError: ('Error waiting for {}', <function LightningDTests.test_closing_different_fees.<locals>.<lambda> at 0x7f4b43e31a60>)
Really, if we're prepared to negotiate it, we should be prepared to
accept it ourselves. Simply take the cheapest tx which is above our
minimum.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
The only use for these was to compute their txids so we could notify depth
in case of reorgs.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
We are slowly hollowing out the in-memory blockchain representation to make
restarts easier.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
All of the callback functions were only using the tx to generate the txid again,
so we just pass that in directly and save passing the tx itself.
This is a simplification to move to the DB backed depth callbacks. It'd be
rather wasteful to read the rawtx and deserialize just to serialize right away
again to find the txid, when we already searched the DB for exactly that txid.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
This will later allow us to determine the transaction confirmation count, and
recover transactions for rebroadcasts.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
Internally both payment and routing use 64-bit, but the interface
between them used 32-bit.
Since both components already support 64-bit we should use that.
In the short_channel_id check we were copying the entire result into the next
bitcoin-cli call, including the newline character.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
Reported-By: @gdassori
Creating the pid-file before daemonizing results in the pid-file containing the
pid of the process that started the daemon, but is now dead.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
Reported-By: Torkel Rogstad @torkelrogstad
We can have more than one; eg we might offer both bech32 and a p2sh
address, and in future we might offer v1 segwit, etc.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
There are two very hard problems in software engineering:
1. Off-by-one errors
In this case we were rolling back further than needed and we were starting the
catchup one block further than expected.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
I saw a failure in test_funding_fail():
assert l2.rpc.listpeers()['peers'][0]['connected']
This can happen if l2 hasn't yet handed back to gossipd. Turns out
we didn't mark uncommitted channels as connected:
[{'id': '03afa3c78bb39217feb8aac308852e6383d59409839c2b91955b2d992421f4a41e', 'connected': False, 'channels': [{'state': 'OPENINGD', 'owner': 'lightning_openingd', 'funder': 'REMOTE', 'status': ['Incoming channel: accepted, now waiting for them to create funding tx']}]}]
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This is probably covered by our "channel capacity" heuristic which
requires the channel be significant, but best to be explicit and sure.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
So we know how much counterparty could theoretically steal from us
(msatoshi_to_us - msatoshi_to_us_min) and how much we could
theoretically steal from counterparty (msatoshi_to_us_max -
msatoshi_to_us).
For more piloting goodness.
In particular, the main daemon and subdaemons share the backtrace code,
with hooks for logging.
The daemon hook inserts the io_poll override, which means we no longer
need io_debug.[ch]. Though most daemons don't need it, they still link
against ccan/io, so it's harmess (suggested by @ZmnSCPxj).
This was tested manually to make sure we get backtraces still.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
I didn't convert all tests: they can still use a standalone context.
It's just marginally more efficient to share the libwally one for all
our daemons which link against it anyway.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
If we only remember the actions that added channels then we'd restore them when
re-reading the gossip_store, so put a tombstone in there to remember to delete
it. These will be cleared upon re-writing the store since the announcements wont
be written anymore.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
This is necessary since we have onchaind tell us about the
their_unilateral/to_us output, after it is already in a block.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
We don't handle \u, since we assume everyone sane is using UTF-8. We'd
still have to reject '\u0000' and maybe other weird cases if we did.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Since we may want to extend the on-disk format by adding custom information we
may as well just go the extra mile and reuse the serialization primitives we
already have.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
But only if we're actually going to change the feerate, otherwise we'd
log every time.
Suggested-by: @ZmnSCPxj
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Naively, this would be 250 satoshi per sipa, but it's not since bitcoind's
fee calculation was not rewritten to deal with weight, but instead bolted
on using vbytes.
The resulting calculations made me cry; I dried my tears on the thorns
of BUILD_ASSERT (I know that makes no sense, but bear with me here as I'm
trying not to swear at my bitcoind colleagues right now).
Fixes: #1194
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This bug is a classic case of being lazy:
1. peer_accept_channel() allocated its return off the input message,
rather than taking an explicit allocation context. This concealed the
lifetime nature of the return.
2. The context for sanitize_error was the error itself, rather than the
more obvious tmpctx (connect_failed does not take).
The global tmpctx removes the "efficiency" excuse for grabbing a random
object to use as context, and is also nice and explicit.
All-the-hard-work-by: @ZmnSCPxj
This fixes the root cause of https://github.com/ElementsProject/lightning/issues/1212
where we deleted the payment because we wanted to retry, then retry failed
so we had an (old) HTLC without a matching payment. We then fed that
HTLC to onchaind, which tells us it's missing, and we try to fail the
payment and deref a NULL pointer.
Fixes: #1212
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We would `block_map_add` inside `add_tip`, but we never
`block_map_del` inside `remove_tip`, which is dangerous as
we actually `tal_free` the block inside `remove_tip`.
Our CI did not reliably trap this problem since block
hashes are random and rerunning the `test_blockchaintrack`
often passed spuriously.
If we're going to simply take() a pointer, don't allocate it off a random
object. Using NULL makes our intent clear, particularly with allocating
packets we're going to take() onto a queue.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
I did a brief audit of tmpctx uses, and we do leak them in various
corner cases. Fortunely, all our daemons are based on some kind of
I/O loop, so it's fairly easy to clean a global tmpctx at that point.
This makes things a bit neater, and slightly more efficient, but also
clearer: I avoided creating a tmpctx in a few places because I didn't
want to add another allocation. With that penalty removed, I can use
it more freely and hopefully write clearer code.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Needed for particular race condition: client calls `sendpay` with
intent to call `waitsendpay` later to get information, but the
payment fails after `sendpay` returns but before client can invoke
`waitsendpay`.
This lets client know of information even if it manages to invoke
`waitsendpay` "late".
As we add more features, the current code is insufficient.
1. Keep an array of single feature bits, for easy switching on and off.
2. Create feature_offered() which checks for both compulsory and optional
variants.
3. Invert requires_unsupported_features() and unsupported_features()
which tend to be double-negative, all_supported_features() and
features_supported().
4. Move single feature definition from wire/peer_wire.h to common/features.h.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Improve usability in these scenarios:
* bitcoin-cli not available in PATH and/or bitcoind not running
* bitcoin-cli available in PATH but bitcoind is not running
This simplifies things, and means it's always in the database. Our
previous approach to creating it on the fly had holes when it was
created for onchaind, causing us to use another every time we
restarted.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Our testing also reveals a bug: we start lightningd and shut it down
before fully processing the blockchain, so we don't set
last_processed_block. Fix that by setting it immediately once we have
a block: worst case it goes backwards a little.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
In general, it is true that accessors should take const and discard it,
but chainparams is *always* const.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Transaction filters are strongly related to the wallet, this move just
makes it a bit more explicit.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
I leave all the now-unnecessary accessors in place to avoid churn, but
the use of bitfields has been more pain than help.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Let's have a simple function that allows us to check whether a channel
still has an HTLC open.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
The following command can be used to trigger these messages:
```
$ timeout 0.01 cli/lightning-cli connect [insert-syntactically-valid-peer-id-here] 123.123.123.123 # where 123.123.123.123 is unreachable
```
These error codes will cause `pay` to retry, so `pay` will never
actually report those error codes.
Those error codes will only get reported at the `sendpay` level.
* Modifies invoice command to have the following format
invoice <msatoshi> <label> <desc> <?expiry> <?fallbackaddr>
* Adds support for Segwit bcrt1 addresses for withdraw
* Add test case for fallback address in invoice creation
* Create a common json_tok_address_scriptpubkey to be used
by invoice and withdraw commands.
There are two recurring calls: the estimatefee call and the
getblockcount call. Currently we simply discard them on error, the
timer isn't rearmed.
This should fix a number of cases where bitcoind has an intermittant
failure and lightningd simply stops collecting blocks.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
In particular, process_getblockhash() exits with status 8 when the block
number is out of range, which is expected. Any other exit status should
be treated as a spurious error.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
The billboard is now far more useful to tell what's going on, and this
gets us closer to a state == owner mapping.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Use NULL on the callback to mean "clear the slot", and call it.
We have do this in two places: the old daemon might die, or the new
daemon might start first.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Each state (effectively, each daemon) has two slots: a permanent slot
if something permanent happens (usually, a failure), and a transient
slot which summarizes what's happening right now.
Uncommitted channels only have a transient slot, by their very nature.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
In #1018 we got no information, except "Internal error". At least
if we tell the other side what went wrong, we're more likely to get
an answer.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
If the source channel is onchain, we try to send a message to onchaind
which (1) doesn't care, (2) doesn't take a channel_fail_htlc msg, and
(3) causes us to crash in subd.c:
assert(!strstarts(sd->msgname(fromwire_peektype(msg_out)), "INVALID"));
Fixes: #821
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We always hand in "NULL" (which means use tal_len on the msg), except
for two places which do that manually for no good reason.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We also fold opening_got_hsm_funding_sig() into the caller; it was
previously a callback before we decided to always use the HSM
synchronously.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
When we clear and recreate ltmp, we attach it to whatever logbook it's on.
This, of course, is fraught, since it may be freed.
We could make it NULL-parented, but that makes YA special-case to free
when we exit (we try to keep valgrind happy by freeing everything). So
since the first log_book is the permanent one attached to lightningd,
just keep that parent when we re-build it after use.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Rusty Russell
ZmnSCPxj
conanoc
Christian Decker
practicalswift
Igor Cota
Mark Beckwith
John Barboza
Isidoro Ghezzi
Corné Plooy
libbitc