Commit Graph

3948 Commits

Author SHA1 Message Date
Olaoluwa Osuntokun
f61f3d0b71
rpcserver: populate block height, chain synced, and testnet in GetInfo 2016-12-12 15:56:58 -08:00
Olaoluwa Osuntokun
a011a3f414
lnrpc: add testnet bool to GetInfo RPC, remove lightning_id 2016-12-12 15:56:54 -08:00
Olaoluwa Osuntokun
61ddd48255
brontide: set the prologue value as specified within BOLT0008 2016-12-12 15:56:50 -08:00
Olaoluwa Osuntokun
b1d28426d5
brontide: properly pack nonce as 96-bit little endian value 2016-12-12 15:56:46 -08:00
Olaoluwa Osuntokun
fdb111e867
brontide: switch to using libsecp256k1's public ECDH API
This commit modifies the opening brontide handshake to use
libsecp256k1's public ECDH API throughout the handshake rather than the
current method which just returns the x-coordinate of the generated
point.

This change was made in order to align the current spec draft with the
aforementioned library since it’s very popular within the pace and
strives to only expose safe API’s to end users.
2016-12-12 15:56:42 -08:00
Olaoluwa Osuntokun
a92017fe9a
lnrpc: rebuild protos 2016-12-12 15:56:38 -08:00
Olaoluwa Osuntokun
85defc3ec3
lnwallet: add new method IsSynced to the WalletController interface
This commit adds a new method to the WalletController interface:
IsSynced. The role of the function is to query the local wallet about
if it thinks it has fully synced to the tip of the current main chain.
This function can be useful within U.I’s to block off certain
functionality until the wallet is fully synced to the main chain.
2016-12-12 15:56:33 -08:00
Olaoluwa Osuntokun
1e3635b5aa
chainntnfs: properly account for partial historical confirmation dispatch
This commit modifies the recently added logic to the ChainNotifier to:
  1. Fix the off-by-one confirmation error that was missed due a flaky
test
  2. Ensure that partial historical confirmations are properly handled.

The partial hostile confirmation case arises when a transaction already
a non-zero number of confirmations when the notification is registered,
but less than what would trigger the confirmation notification. To fix
this, transaction which have a partial number of confirmation are now
properly inserted into the confHeap, skipping first first phase for
notifications.
2016-12-08 16:16:29 -08:00
Alex Akselrod
a20594b0bf lnwire: switch to using a fixed 64-byte encoding for signatures (#86)
This commit modifies the encoding of signatures on the wire to use 
a fixed-size 64-byte format. This change is required as the current spec
draft dictates that all signatures be encoded as `R` and `S` as 32-byte
big-endian integers. With this, signatures are now always a _fixed_ size 
slice of bytes on the wire, which is nice to have. 

Fixes #83.
2016-12-08 12:56:37 -08:00
bryanvu
909c3f8df9 chainntfs: add checks for previously confirmed transactions and spends
Without these checks, “zombie” notification requests that would never
be dispatched could be registered. This would occur if notification
requests were made for events (transaction confirmation and output
spent) that had already been recorded on the blockchain.
2016-12-08 12:28:15 -08:00
Olaoluwa Osuntokun
e39dc9eec1
channeldb: add storage of an on-disk directed channel graph
This commit introduces a new capability to the database: storage of an
on-disk directed channel graph. The on-disk representation of the graph
within boltdb is essentially a modified adjacency list which separates
the storage of the edge’s existence and the storage of the edge
information itself.

The new objects provided within he ChannelGraph carry an API which
facilitates easy graph traversal via their ForEach* methods. As a
result, path finding algorithms will be able to be expressed in a
natural way using the range methods as a for-range language extension
within Go.

Additionally caching will likely be added either at this layer or the
layer above (the RoutingManager) in order keep queries and outgoing
payments speedy. In a future commit a new set of RPC’s to query the
state of a particular edge or node will also be added.
2016-12-07 22:50:19 -08:00
Olaoluwa Osuntokun
06347664fc
channeldb: remove route.go 2016-12-07 22:40:16 -08:00
Olaoluwa Osuntokun
e0c09a016b
lnwallet: use stored initiator bool to properly construct close tx
This commit modifies the channel closing logic to remove the hard coded
bools indicating which side is attempting the closure. With the recent
changes, the initiator must always pay the channel closure fees.

This information is recently stored on disk, therefore we can use the
boolean to ensure that the closure transaction is created properly no
matter who initiates the close.

This fixes a bug.
2016-12-07 22:39:33 -08:00
Olaoluwa Osuntokun
60f66fe2d7
brontide: implement handshake versioning enforcement per the spec 2016-11-30 19:11:58 -08:00
Olaoluwa Osuntokun
71c6e837e3
breacharbiter: fix bug, don't exit main loop due to unknown contract 2016-11-28 20:08:06 -08:00
Olaoluwa Osuntokun
494fcec874
breacharbiter: introduce new sub-system to watch for breaches
This commit introduces a new sub-system into the daemon whose job it is
to vigilantly watch for any potential channel breaches throughout the
up-time of the daemon. The logic which was moved from the utxoNursery
in a prior commit now resides within the breachArbiter.

Upon start-up the breachArbiter will query the database for all active
channels, launching a goroutine for each channel in order to be able to
take action if a channel breach is detected. The breachArbiter is also
responsible for notifying the htlcSwitch about channel breaches in
order to black-list the breached linked during any multi-hop forwarding
decisions.
2016-11-28 19:44:09 -08:00
Olaoluwa Osuntokun
93cbfdbd60
htlcswitch: add new CloseType enum to account for all closure types 2016-11-28 18:44:22 -08:00
Olaoluwa Osuntokun
a5d9ce2fac
utxonursery: remove contract breach retribution duties
This commit removes the previously added contract breach retribution
duties from the utxoNursery. Much of the code removed will instead be
moved to a new sub-system which continuously monitors the state of ALL
active contracts for their entire life time.
2016-11-28 16:53:23 -08:00
Olaoluwa Osuntokun
7b016fef0a
chainntfns: extend testSpendNotification to test for multi-client dispatch 2016-11-27 19:18:24 -08:00
Olaoluwa Osuntokun
d1f12627d2
chainntfns/btcdnotify: add support for multi-dispatch spend notifications
This commit adds support for dispatching the same spend notification to
multiple clients. This is now required by the ChainNotiifer interface
documentation and will be needed within the daemon in order to support
some upcoming refactors.
2016-11-27 19:17:34 -08:00
Olaoluwa Osuntokun
0bd5c6790d
chainntfns: specify that implementations must support multiple clients
This commit updates the documentation for the ChainNotifier interface
to specify that all implementation MUST be able to support dispatching
the same notification to multiple clients.
2016-11-27 19:16:06 -08:00
Olaoluwa Osuntokun
60946e4ddc
channeldb: add method to OpenChannel for querying num updates
This commit adds a new method to the `OpenChannel` struct:
CommitmentHeight(). This method allows multiple callers holding the
same instance of an OpenChannel struct tied to the same on-disk channel
to consistently query the current commitment height for a channel. Such
a modification will prove useful later as sections of the code-base are
separated in order to allow more vigilant watching of channel breaches.
2016-11-27 19:10:13 -08:00
Olaoluwa Osuntokun
5a668c9321
channeldb: fully initialize meta-data bucket during DB creation 2016-11-27 18:49:09 -08:00
Olaoluwa Osuntokun
7454b7df95
channeldb: slightly refactor the [Fetch|Put]Meta methods
This commit performs a slight refactoring of the internals (and API) of
the [Fetch|Put]Meta methods. The changes are rather minor and simply
eliminate the conditional branching structure with usage of an internal
function. This new form is much easier to follow.
2016-11-27 18:44:23 -08:00
Olaoluwa Osuntokun
5b2f9a5b69
channeldb: modify base DB version to start at 0, not 1 2016-11-27 18:37:13 -08:00
Olaoluwa Osuntokun
1e710b73a0
channeldb: properly handle ErrMetaNotFound error within syncVersions 2016-11-27 18:36:24 -08:00
Olaoluwa Osuntokun
8312ce587a
channeldb: embed the instance of boltb within DB struct
This commit modifies the composition of the boltdb pointer within the
DB struct to use embedding.

The rationale for this change is that the daemon may soon store some
semi-transient items within the database which requires us to expose
the boltdb’s transaction API. The logic for serialization of this data
will likely lie outside of the channeldb package as the items that may
be stored in the future will be specific to the current sub-systems
within the daemon and not generic channel related data.
2016-11-27 18:35:55 -08:00
BitfuryLightning
327768f4ad routing: Move tools inside lnd. Refactor and delete unneeded stuff
Use [33]byte for graph vertex representation.
Delete unneeded stuff:
1. DeepEqual for graph comparison
2. EdgePath
3. 2-thread BFS
4. Table transfer messages and neighborhood radius
5. Beacons

Refactor:
1. Change ID to Vertex
2. Test use table driven approach
3. Add comments
4. Make graph internal representation private
5. Use wire.OutPoint as  EdgeId
6. Decouple routing messages from routing implementation
7. Delete Async methods
8. Delete unneeded channels and priority buffer from manager
9. Delete unneeded interfaces in internal graph realisation
10. Renamed ID to Vertex
2016-11-23 20:37:43 -06:00
Andrey Samokhvalov
da3028e10c lnwallet: add HTLC count validation 2016-11-23 20:02:29 -06:00
Andrey Samokhvalov
391d5cd401 lnwallet: add commitment transaction estimation 2016-11-23 20:02:29 -06:00
Andrey Samokhvalov
5b9e4ae61e general: fix typos, rename variables, add comments 2016-11-23 20:02:29 -06:00
Olaoluwa Osuntokun
b70d1f8cfe
channeldb: move .SyncVersions() into .Open(), minor migration cleanups
This commit unexports the SyncVerions PR, in favor of making it private
and moving it into the .Open() method. With this change, callers no
longer need worry about ensuring the database version is up to sync
before usage, as it will happen automatically once the database is
opened.

This commit also unexports some additional variables within the package
that don’t need be consumed by the public, and exports the
DbVersionNumber attribute on the meta struct. Finally some minor
formatting fixes have neen carried out to ensure the new code more
closely matches the style of the rest of the codebase.
2016-11-22 16:00:02 -06:00
Andrey Samokhvalov
25167361d2 lnd: add sync logic in lnd main 2016-11-22 15:25:21 -06:00
Andrey Samokhvalov
c53ea091dd channeldb: added channeldb versioning
In this commit the upgrade mechanism for database was added which makes he current schema rigid and upgradeable. Additional bucket 'metaBucket' was added which stores
    key that house meta-data related to the current/version state of the database. 'createChannelDB' was modified to create this new bucket+key during initializing. Also
    backup logic was added which makes a complete copy of the current database during migration process and restore the previous version of database if migration failed.
2016-11-22 15:25:21 -06:00
bryanvu
2bf5794645 lnrpc: added rpc support for querying a channel's satoshis sent/received
Added total_satoshis_sent and total_satoshis_received fields to the
ListChannels RPC call.
2016-11-22 14:57:03 -06:00
bryanvu
faf9daddf6 lnwallet: calculate channel's total satoshis sent and received
When HTLCs are settled, the channel’s TotalSatoshisSent and
TotalSatoshisReceived fields are updated.
2016-11-22 14:57:03 -06:00
bryanvu
61f0d87138 channeldb: persist channel metadata (satoshis sent and received)
This commit adds persistence for a channel’s
TotalSatoshis[Sent|Received] fields. Also, the functions that perform
this persistence were renamed from [put|delete|fetch]ChanTotalFlow to
[put|delete|fetch]ChanAmountsTransferred.
2016-11-22 14:57:03 -06:00
Olaoluwa Osuntokun
1199786498
test: ensure all invoices are unique
This commit modifies the invoices generated during the
testRevokedCloseRetribution integration test to ensure that the
invoices are globally unique within the context of the integration
tests.
2016-11-21 21:52:08 -06:00
Olaoluwa Osuntokun
862f29c6a2
invoices: properly set pointer in invoiceSubscription to fix panic 2016-11-21 21:33:34 -06:00
Olaoluwa Osuntokun
6ff357686f
test: add integration test to excerise uncooperative channel breaches
This commit adds a new rather extensive integration tests to excerise
uncooperative channel breaches triggered by a counter-party
broadcasting a previously revoked commitment state.

In order to programmatically script such logic using the integration
testing framework, the test manually manipulates the database files of
one of the nodes within the test network in order to force Bob to
travel back in time to a revoked commitment state. With this
manipulation, we then force Bob to broadcast the revoked state,
triggering Alice’s retribution logic which sweeps ALL the funds within
the channel.
2016-11-21 21:17:00 -06:00
Olaoluwa Osuntokun
5e5bc3884a
test: modify closeChannelAndAssert to allow force close, return txid 2016-11-21 21:13:12 -06:00
Olaoluwa Osuntokun
5a678d5beb
test: add a callback to networkHarness.RestartNode
This commit adds a callback to the RestartNode method on the network
harness in order to allow test authors to execute arbitrary logic
in-between the restart process for the node.
2016-11-21 21:08:52 -06:00
Olaoluwa Osuntokun
31e65e3333
peer: add logic to dispatch justice after revoke state broadcast
This commit adds the necessary logic a peer’s htlcManger goroutine to
dispatch justice (sweeping all the funds in a channel) after it has
been detected that the counter-party has broadcast a prior revoked
commitment state.

The task to generate the justice transaction is handed off to the
utxoNursery. Once the nursery has finished its duty, the peer launches
a new goroutine which will delete the state of the channel once the
justice transaction has been confirmed within a block.
2016-11-21 13:32:25 -06:00
Olaoluwa Osuntokun
a29cd563f6
utxonursery: expand duties to channel contract breach retribution
This commit expands the duties of the utxoNursery (which should maybe
be renamed), to handle carrying out retribution against a counter-party
who breaches the channel contract by broadcasting a prior revoked state
on-chain.

As part of the retribution, once the breach transaction (the revoked
commitment transaction) has been confirmed within a block, the nursery
then sweep ALL funds pending within the channel to the daemon’s wallet.

This new section of the code has been implemented without full
persistence logic similar to time-locked output sweeping workflow of
the nursery. In a later commit, this section will gain full persistence
logic so the workflows can survive restarts of the daemon.
2016-11-21 13:28:56 -06:00
Olaoluwa Osuntokun
cc63db0aee
lnwallet: add detection+handling of contract breaches in channel
This commit adds detection of contract breaches within the commitment
state-machine for a channel. A contract breach is defined as the event
wherein a channel counter-party broadcasts a previously revoked
commitment transaction. Such an event immediately closes a channel as
the funds are now in a state of dispute.

Once a breach is detected, a snapshot of the breached state is
retrieved from the database’s revocation log. This snapshot is then
used to generate the revocation leaf used within this particular state
along with all the other information ncessary to sweep ALL active funds
within the channel. This information is encapsulated within the
BreachRetribution struct which is sent over a new channel dedicated to
sending/receiving BreachRetributions.
2016-11-21 00:54:45 -06:00
Olaoluwa Osuntokun
188811cf05
lnwallet: populate the output index of an HTLC in ChannelDeltas
This commit modifies the logic within the state machine to properly
populate the new field of `OutputIndex` which the HTLC stored within a
channel delta.

With this change, in the future we’ll be able to quickly locate a
particular HTLC output in the scenario that the commitment transaction
has been broadcast on-chain and we need to sweep it. Allocating a few
extra bytes on-disk saves us from the guess-and-check logic+code
required otherwise.
2016-11-20 23:54:24 -06:00
Olaoluwa Osuntokun
2d884618aa
lnwallet: ensure all channel state machine methods are thread-safe
This commit adds some necessary locking to ensure that all updates to
the internal state of the commitment state machine are fully serial and
thread-safe. This change is required to ensure future actions w.r.t
taking action once a revoked commitment transaction has been broadcast
are not carried out while the channel’s state is being updated.
2016-11-20 23:33:27 -06:00
Olaoluwa Osuntokun
e942e70651
lnwallet: extend the SignDescriptor to include a PrivateTweak
This commit extends the SignDescriptor with a single attribute, the
‘PrivateTweak’. The duties of the Signer interface have also been
augmented to properly derive a private key using the specified tweak,
iff it’s non-nil.

As currently defined in order to generate the proper private key based
off of a PrivateTweak, the signer is to add the tweak value to the
private key for the specified public key. This generated value is to be
used for signing within the specified context.

This change paves the way for automatic revoked output sweeping with
signatures generated directly by the Signer interface, maintaining the
structure of the abstraction.

A test has been added at the interface level in order to excerise each
WalletController’s implementation of the key derivation as currently
defined.
2016-11-18 17:12:58 -08:00
Olaoluwa Osuntokun
c81e0a3ebb
lnwallet: convert CommitSpendRevoke+CommitSpendNoDelay to use Signer
This commit converts the rearming two commitment spend functions to use
the lnwallet.Signer interface directly rather than manually manage
private keys during the signing process. This commit is in preparation
for implementation of fully automated revoked uncooperative closure
detection and retribution.
2016-11-18 15:23:50 -08:00
Olaoluwa Osuntokun
d98cac432b
peer: ensure access to activeChannels and htlcManagers is thread safe 2016-11-17 18:43:51 -08:00