This has the benefit of being shorter, as well as more reliable (you
will get a link error if we can't print it, not a runtime one!).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
The pattern of making tal-allocated copies of wally data to pass around
was made redundant after these calls were added by the use of
tal_wally_start/tal_wally_end to parent wally allocations. We can thus
just pass the data directly and avoid the allocations.
Removes redundant allocations when checking tx filters and computing fees.
Signed-off-by: Jon Griffiths <jon_p_griffiths@yahoo.com>
Watchtowers changed the code so that we *always* have a channel->shutdown_scriptpubkey[LOCAL]
(see new_channel()). The previous code had several problems:
1. It tested this for NULL, unnecessarily.
2. It allowed overriding if it was a default, *even* if we were already using it.
3. If the peer opened without option_shutdown_anysegwit, but upgraded before we closed,
we would not recognize the default.
4. It set the final scriptpubkey (and other things!) even if the command failed.
Changelog-Fixed: JSON-RPC: `close` with `destination` works even if prior `destination` was rejected.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is a bit messy, but it tries to do the minimal switchover.
Some tests change, so those are included here.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
From the spec:
Once peers are ready to exchange commitment signatures, they must remember
the details of the funding transaction to allow resuming the signatures
exchange if a disconnection happens.
Basically this means we add channels to the database before we've gotten
commitments for them; it's nice that there's now a state for commitments
recevied but we now save the channel prior to that.
This commit makes it possible to track the pre-commit-rcvd but not quite
open-init state.
The latter is used when we're put in the db, the former is the uncommitted state.
Currently dbid == 0 is used in addition to the state, which is unwieldy.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Experimental: JSON-RPC: added new dual-funding state `DUALOPEND_OPEN_COMMITTED`
We should use capability tests for states (can you add htlcs?) rather than vague
descriptions (are you closing?).
And as much as possible, use switch () statements to force us to think
about all the cases, especially when we add new states!
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
In spec commit 498f104fd399488c77f449d05cb21c0b604636a2 (August 2021),
Bastien Teinturier removed the requirement that the mutual close fee be
less than or equal the final commitment tx.
We adopted that change in v0.10.2, but we made sure to never offer a fee
under the final commitment tx's fee, so we didn't break older nodes.
However, the closing tx can actually be larger than the final commitment tx!
The final commit tx has a 22-byte P2WKH output and a 34-byte P2WSH output;
the closing can have two 34-byte outputs, making it 4*8 = 32 Sipa heavier.
Previously this would only happen if both sides asked for P2WSH outputs,
but now it happens with P2TR, which we now do.
The result is that we create a tx which is below the finally commitment
tx fee, and may be below minrelayfee (as it was in regtest).
So it's time to remove that backwards-compatibility hack.
Changelog-Fixed: Protocol: We may propose mutual close transaction which has a slightly higher fee than the final commitment tx (depending on the outputs, e.g. two taproot outputs).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Fixes: #6545
I obviously like the word "capabilities" since I reused it to refer
to the HSM's overall features :(
Suggested-by: @ksedgwic
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Thread the signed tx through so close's JSON return contains that,
rather than the unsigned channel->last_tx.
We have to split the "get cmd_id" from "resolve the close commands" though;
and of course, as before, we don't actually print the txids of multiple
transactions even though we may have multi in flight due to splice!
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Fixed: JSON-RPC: `close` returns a `tx` field with witness data populated (i.e. signed).
Fixes: #6440
Update gossip routiens and various other hecks on the channel state to consider AWAITING_SPLICE to be routable and treated similar to CHANNELD_NORMAL.
Small updates to psbt interface
Changelog-None
In most cases, it's the same as option_anchor_outputs, but for
fees it's different. This transformation is the simplest:
pass it as a pair, and test it explicitly.
In future we could rationalize some paths, but this was nice
and mechanical.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Since we can CPFP, we don't have to track the feerate as closely. But
it still needs to get in the mempool, so we use 10 sat/byte, or the
100 block estimate if that is higher.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Added: JSON-RPC: `feerates` has new fields `unilateral_anchor_close` to show the feerate used for anchor channels (currently experimental), and `unilateral_close_nonanchor_satoshis`.
Changelog-Changed: JSON-RPC: `feerates` `unilateral_close_satoshis` now assumes anchor channels if enabled (currently experimental).
We have the FEERATE_FLOOR constant if you don't care, but usually you want
to use the current bitcoind lower limit, so call get_feerate_floor()
(which is currently the same, but coming!).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
It's needed as the db and wallet is being set up (db migrations), so
it's simpler this way to always use ld->bip32_base for the next patch.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We didn't actually populate them properly, and the real annotations
are on inputs and outputs.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-EXPERIMENTAL: JSON-RPC: `listtransactions` `channel` and `type` field removed at top level.
First, merge the _ahf_ and non-ahf interfaces.
Second, remove the always-NULL txs->cmd field.
Then, add optional id_prefix for bitcoind_sendrawx, so if it's
triggered by a command (e.g. "withdraw") it's shown correctly in logs.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
The only places which should call try_reconnect now are the "connect"
command, and the disconnect path when it decides there's still an
active channel.
This introduces one subtlety: if we disconnect when there's no active
channel, but then the subd makes one, we have to catch that case!
This temporarily reverts "slow" reconnections to fast ones: see next
patch.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
There are hardly any lightningd-specific JSON functions: all that's left
are the feerate ones, and there's already a comment that we should have
a lightningd/feerate.h.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We have them split over common/param.c, common/json.c,
common/json_helpers.c, common/json_tok.c and common/json_stream.c.
Change that to:
* common/json_parse (all the json_to_xxx routines)
* common/json_parse_simple (simplest the json parsing routines, for cli too)
* common/json_stream (all the json_add_xxx routines)
* common/json_param (all the param and param_xxx routines)
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This doesn't have an effect now (except in experimental mode), but it
will when we support anchors. So we deprecate the use of those in the
close command too.
For experimental mode we have to avoid using p2pkh; adapt that test.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Deprecated: JSON-RPC: `shutdown` no longer allows p2pkh or p2sh addresses.
We get some memleak reports because ld owns the subd, but once
the peer/channel is freed, there's no reference for the brief time
until the subd exits.
This happens for both opening and closingd. For openingd, the
peer owns it, for others (including dualopend) the channel owns it.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This is generally verboten now, since there can be multiple. There are a
few exceptions:
1. We sometimes want to know if there are *any* active channels.
2. Some dev commands still take peer id when they mean channel_id.
3. We still allow peer id when it's fully determined.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Changed: JSON-RPC: `close` by peer id will fail if there is more than one live channel (use `channel_id` or `short_channel_id` as id arg).
This is neater than what we had before, and slightly more general.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Changed: JSON_RPC: `sendcustommsg` now works with any connected peer, even when shutting down a channel.
This fixes lightningd's chronic weight underestimate.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Fixed: closingd: more accurate weight estimation helps mutual closing near min/max feerates.
We now let gossipd do it.
This also means there's nothing left in 'struct per_peer_state' to
send across the wire (the fds are sent separately), so that gets
removed from wire messages too.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
And turn "" includes into full-path (which makes it easier to put
config.h first, and finds some cases check-includes.sh missed
previously).
config.h sets _GNU_SOURCE which really needs to be done before any
'#includes': we mainly got away with it with glibc, but other platforms
like Alpine may have stricter requirements.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This allows cmdline users to have more idea what's going on.
Inspired-by: https://github.com/ElementsProject/lightning/issues/4777
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Added: `close` now notifies about the feeranges each side uses.
