Matt Corallo [Wed, 1 May 2024 14:32:47 +0000 (14:32 +0000)]
Don't attempt to resume channels if we already exchanged funding
ddf75afd16 introduced the ability to re-exchange our `ChannelOpen`
after a peer disconnects if we didn't complete funding on our end.
It did not implement nor consider what would happen if we
re-connected after we created our own funding transactions, and
currently it panics (and even if it did not it would replay the
`FundingTransactionGenerated` event to users).
This addresses this in a temporary fashion to fix the immediate
panic for 0.0.123, allowing us to fix the issue more fully later.
Matt Corallo [Thu, 25 Apr 2024 14:30:05 +0000 (14:30 +0000)]
Drop completed blocked `ChannelMonitorUpdate`s on startup
If a user receives a payment preimage for an outbound payment, the
`PaymentSent` event will block any eventual RAA
`ChannelMonitorUpdate` from the same channel, assuming it comes in
before the event can be processed. If this blocking kicks in, but
the flow eventually completes with the RAA `ChannelMonitorUpdate`
being persisted, but the `ChannelManager` is only persisted prior
to the event being handled, on startup we'll have a fully
up-to-date `ChannelMonitor` but a pending, blocked
`ChannelMonitorUpdate`. When the `PaymentSent` event is replayed
we'll end up trying to apply a redundant `ChannelMonitorUpdate`
which will panic.
See the test added in this commit for an implementation of this
situation.
In this commit we fix this issue by simply dropping blocked
`ChannelMonitorUpdate`s the same as we do pending ones.
Matt Corallo [Mon, 22 Apr 2024 13:03:14 +0000 (13:03 +0000)]
Drop the rustup-specific calling in `ci/rustfmt.sh`
The +rustversion call semantics are specific to rustup and do not
work with standard rust toolchains. However, because rustfmt
formatting differs slightly between stable and our 1.63 target, we
need to keep the +1.63.0 for rustup users.
Thus, here, we check for the presence of a `rustup` command and
pass the "+1.63.0" argument if we find one.
Matt Corallo [Mon, 22 Apr 2024 12:50:58 +0000 (12:50 +0000)]
Only include `derive_add_tweak` for base key types that use it
Specifically `RevocationBasepoint` has a different derivation, so
shouldn't have a `derive_add_tweak` at all. We also use this
opportunity to link to the `from_basepoint` function in the
`derive_add_tweak` docs.
Matt Corallo [Fri, 19 Apr 2024 00:36:52 +0000 (00:36 +0000)]
Use `Sha256`s for tweaks in `sign` to enforce randomness
We assume that tweaks are the output of a SHA-256 hash function
(and thus that failing to create a private key from the has
negligible probability) in `add_public_key_tweak` and elsewhere.
Thus, we really shouldn't be taking byte arrays in the public API
but rather `Sha256` objects, and communicating in the docs for
`add_public_key_tweak` that we can panic if its not the output of
a hash function, both of which we do here.
Matt Corallo [Thu, 11 Apr 2024 21:53:44 +0000 (21:53 +0000)]
Debug-log monitor update starts and completions in `ChainMonitor`
When a `ChannelMonitor[Update]` persistence completes, we rely on
logging in `ChannelManager` to hear about it. However, this won't
happen at all if there's still pending updates as no `MonitorEvent`
will be generated.
Thus, here, we add logging directly in `ChainMonitor`, ensuring we
can deduce when individual updates completed from debug logs.
olegkubrakov [Tue, 19 Dec 2023 00:54:59 +0000 (16:54 -0800)]
Implement Script for Witness and Add Tweak in PSBT.
Adding Witness Script and key tweaks makes
a Partially Signed Bitcoin Transaction the single data
source needed for a Signer to produce valid signatures.
A Signer is not required to be able to generate L2 keys,
e.g delayed payment basepoint.
Archives fully resolved channel monitors by adding them to a backup
location and removing them from the primary storage & the monitor set.
This is useful for pruning fully resolved monitors from the monitor
set and primary storage so they are not reloaded on every new new
block connection.
We also add a new function, `archive_persisted_channel` to the
`Persist` trait that writes the monitor to an archive storage and
removes it from the primary storage.
Elias Rohrer [Fri, 12 Jan 2024 16:46:37 +0000 (17:46 +0100)]
Add basic `OutputSweeper` test in BP
.. we simply check that the `OutputSweeper` generates a spending tx and
that the `TrackedSpendableOutput` is pruned once it reaches
`ANTI_REORG_DELAY`.
Elias Rohrer [Fri, 12 Jan 2024 10:36:08 +0000 (11:36 +0100)]
Add `OutputSweeper` utility persisting and sweeping spendable outputs
We add a `OutputSweeper` utility that allows to track the state of
spendable output descriptors as emitted by `Event::SpendableOutputs`.
To this end, the `OutputSweeper` persists the necessary information in
our `KVStore` and regularly tries to sweep the spendable outputs,
removing them after reaching threshold confirmations, i.e.,
`ANTI_REORG_DELAY`.
Jeffrey Czyz [Fri, 29 Mar 2024 02:31:10 +0000 (21:31 -0500)]
Include InvoiceRequest fields in PaymentContext
When receiving a payment, it's useful to know information about the
InvoiceRequest. Include this data in PaymentContext::Bolt12Offer so
users can display information about an inbound payment (e.g., the payer
note).
When constructing a PaymentPurpose in ChannelManager, use the
PaymentContext from OnionPayload to determine which variant to
construct, including those for BOLT 12 payments.
In order to provide more context in PaymentClaimable and PaymentClaimed
events, introduce new variants of PaymentPurpose for use with BOLT 12
payments. Separate variants are used for offers and refunds. An unknown
variant is used for backwards compatibility and ease of testing, but is
otherwise not publicly constructable.
Jeffrey Czyz [Tue, 26 Mar 2024 23:57:57 +0000 (18:57 -0500)]
Include Refund context in blinded payment paths
When requesting a payment for a refund, include a context in the
Bolt12Invoice's blinded payment paths indicated it is for such. When the
eventual payment is received, the user can use the payment hash to
correlate it with the corresponding Refund.
Jeffrey Czyz [Tue, 26 Mar 2024 23:48:39 +0000 (18:48 -0500)]
Include Offer context in blinded payment paths
When constructing blinded payment paths for a Bolt12Invoice response,
include the OfferId so that the eventual payment can be correlated with
the Offer.
Jeffrey Czyz [Tue, 26 Mar 2024 23:39:06 +0000 (18:39 -0500)]
Include OfferId in VerifiedInvoiceRequest
Extract the OfferId from the offer metadata sent back in the
InvoiceRequest and include it in VerifiedInvoiceRequest. This can be
used to correspond the eventual payment for the invoice response by
including it in the invoice's blinded payment paths.
Jeffrey Czyz [Mon, 25 Mar 2024 21:10:36 +0000 (16:10 -0500)]
Define an OfferId for BOLT 12 Offers
Use a merkle root hash of the offer TLV records to define an offer id.
Will be included in a BOLT 12 invoice's blinded payment paths in order
for the recipient to identify which offer the payment is for.
Jeffrey Czyz [Tue, 26 Mar 2024 18:10:04 +0000 (13:10 -0500)]
Pass PaymentContext through HTLC processing
PendingInboundPayment::BlindedReceive includes a PaymentContext, which
the recipient includes in each blinded path. Included this when
processing HTLCs in ChannelManager, first into PendingHTLCRouting and
then to OnionPayload. Later, this will be included in the PaymentPurpose
when surfaced to user in PaymentClaimable and PaymentClaimed events.
Jeffrey Czyz [Tue, 26 Mar 2024 14:48:03 +0000 (09:48 -0500)]
Add PaymentContext to payment::ReceiveTlvs
Providing LDK-specific data in a BlindedPath allows for the data to be
received with the corresponding payment. This is useful as it can then
be surfaced in PaymentClaimable events where the user may correlated
with an Offer, for instance. Define a PaymentContext enum for including
various context (e.g., offer, refund, static invoice).
Jeffrey Czyz [Tue, 12 Mar 2024 00:00:40 +0000 (19:00 -0500)]
Return the invoice when requesting a refund
When sending an invoice for a refund, information from the invoice may
be useful for caller. For instance, the payment_hash can be used to
track whether the refund was paid. Return the invoice to facilitate this
use case.
Elias Rohrer [Wed, 17 Apr 2024 09:54:25 +0000 (11:54 +0200)]
Acquire `per_peer_state` `write` lock earlier in `ChannelManager::write`
Previously, we would hold the `per_peer_state` `read` lock during the
serialization of channel objects. While this might have reduced lock
congestion minimally, we also calculated the number of serializable
peers in this phase, only to use it later after dropping and reacquiring
the `per_peer_state` `write` lock.
This could potentially result in inconsistiencies if the
`serializable_peer_count` would change after we dropped the `read` lock
but before we acquired the `write` lock.
To mitigate the issue we just acquire the `write` lock ealier and hold
it for the remainder of `ChannelManager::write`.
Jeffrey Czyz [Mon, 11 Mar 2024 23:31:50 +0000 (18:31 -0500)]
Implement Eq and Hash for Bolt12Invoice
Bolt12Invoice will be added to a new Event::InvoiceGenerated variant.
These traits along with PartialEq are required to be implemented for any
type used in an Event.
Jeffrey Czyz [Mon, 11 Mar 2024 22:03:26 +0000 (17:03 -0500)]
Refactor handling of Bolt12Invoice
In order to provide an InvoiceGenerated event, it would be cleaner to
have one location where a Bolt12Invoice is successfully created.
Refactor the handling code to this end and clean-up line length by
making some of the type conversions more streamlined.
Jeffrey Czyz [Sun, 10 Mar 2024 00:58:01 +0000 (18:58 -0600)]
Refactor handling of InvoiceRequest
In order to generate and InvoiceSent event, it would be cleaner to have
one location where a Bolt12Invoice is successfully generated. Refactor
the handling code to this end and clean-up line length by making some of
the type conversions more streamlined.
Add a version of the create_onion_message utility function that attempts
to resolved the introduction node of the destination's BlindedPath using
a ReadOnlyNetworkGraph`. Otherwise, if given a path using the compact
representation, using create_onion_message would fail. Keep the current
version for use internally and for external uses where the blinded path
is known to be resolved.
Jeffrey Czyz [Wed, 20 Mar 2024 19:31:30 +0000 (14:31 -0500)]
Look up node id from scid in OnionMessenger
When forwarding onion messages, the next node may be represented by a
short channel id instead of a node id. Parameterize OnionMessenger with
a NodeIdLookUp trait to find which node is the next hop. Implement the
trait for ChannelManager for forwarding to channel counterparties.
Also use this trait when advancing a blinded path one hop when the
sender is the introduction node.
Jeffrey Czyz [Tue, 19 Mar 2024 02:58:04 +0000 (21:58 -0500)]
Resolve IntroductionNode::DirectedShortChannelId
When OnionMessenger creates an OnionMessage to a Destination, the latter
may contain an IntroductionNode::DirectedShortChannelId inside a
BlindedPath. Resolve these in DefaultMessageRouter and handle unresolved
ones in OnionMessenger.
Jeffrey Czyz [Fri, 15 Mar 2024 21:52:36 +0000 (16:52 -0500)]
Generalize BlindedPath::introduction_node_id field
Allow using either a node id or a directed short channel id in blinded
paths. This allows for a more compact representation of blinded paths,
which is advantageous for reducing offer QR code size.
Follow-up commits will implement handling the directed short channel id
case in OnionMessenger as it requires resolving the introduction node in
MessageRouter.
Jeffrey Czyz [Wed, 20 Mar 2024 21:43:03 +0000 (16:43 -0500)]
Add source reference to BlindedPathCandidate hop
Blinded paths currently contain a node id for the introduction node.
However, a compact representation will allow a directed short channel id
instead. Update BlindedPathCandidate and OneHopBlindedPathCandidate to
store a NodeId reference from either the NetworkGraph or from the user-
provided first hops.
This approach avoids looking up the introduction node id on demand,
which may not be resolvable. Thus, that would require returning an
Option from CandidateRouteHop::source and handle None accordingly.
jbesraa [Tue, 26 Mar 2024 17:23:37 +0000 (19:23 +0200)]
Fix `cmp::max` execution in `ChannelContext::get_dust_buffer_feerate`
The current `cmp::max` doesnt align with the function comment, ie its
comparing 2530 and `feerate_plus_quarter` instead of `feerate_per_kw
+ 2530` and `feerate_plus_quarter` which is fixed in this commit
Fix race between handshake_complete and timer_tick_occurred
The initial noise handshake on connection establishment must complete
within a single timer tick. This timeout is enforced via
`awaiting_pong_timer_tick_intervals` whenever a timer tick fires while
our handshake has yet to complete. Currently, on an inbound connection,
if a timer tick fires after we've sent act two of the noise handshake
along with our init message and before receiving the counterparty's init
message, we begin enforcing such timeout. Even if we immediately
continue to process the counterparty's init message to complete to
handshake, the timeout enforcement is not cleared. With the handshake
complete, `awaiting_pong_timer_tick_intervals` is now tracked to enforce
a pong timeout, except a ping was never actually sent. If a single timer
tick fires again without having received a message from the peer, or
enough timer ticks fire to trigger the
`MAX_BUFFER_DRAIN_TICK_INTERVALS_PER_PEER` logic, we'll end up
disconnecting the peer due to a timeout for a pong we'll never receive.
We fix this by always resetting `awaiting_pong_timer_tick_intervals`
upon processing our counterparty's init message.
Matt Corallo [Thu, 11 Apr 2024 15:20:08 +0000 (15:20 +0000)]
Log pending in-flight updates when we are missing a monitor
If we are missing a `ChannelMonitor` for which the `ChannelManager`
has pending updates, it may be useful to print what the updates we
have actually are, at least useful in identifying the bug(s).
Jeffrey Czyz [Wed, 20 Mar 2024 21:42:30 +0000 (16:42 -0500)]
Add BlindedPath::introduction_node_id method
Blinded paths use a pubkey to identify the introduction node, but it
will soon allow using a directed short channel id instead. Add an
introduction_node_id method to BlindedPath to facilitate lookup in the
latter case.
Allow either using a node id or a short channel id when forwarding an
onion message. This allows for a more compact representation of blinded
paths, which is advantageous for reducing offer QR code size.
Follow-up commits will implement handling the short channel id case as
it requires looking up the destination node id.
cc78b77c715d6ef62693d4c1bc7190da990ec0fa fixed an important
downgrade bug, but neglected to add test coverage. Here we recitfy
that by adding a few simple tests of common cases.
Tests heavily tweaked by Matt Corallo <git@bluematt.me>.