Commit Graph

1632 Commits

Author SHA1 Message Date
Rusty Russell
49d97a2fd6 Update wire from spec ed107e4ef019f33a88aa5567adca7fbb944e93af
This version correctly extracts fields with _ in them, meaning we get
more fields.

Also adds Makefile dependency which I noticed broke the build.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30
Rusty Russell
86da7c3a4d lightningd/channel: send and receive htlc_fulfilled messages.
Includes a fix for the direction we fulfill.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30
Rusty Russell
2d635a381b lightningd/channel: pass owner, not sender to channel_fulfill_htlc / channel_fail_htlc
I got this wrong when using them.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30
Rusty Russell
85fd8218e2 lightningd: track channel balance.
This is an approximate result (it's only our confirmed balance, not showing
outstanding HTLCs), but it gives an easy way to check HTLCs have been
resolved.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30
Rusty Russell
dc562f0533 Makefiles: fix from-scratch parallel build.
1) Need config.h before wire/gen_ are compiled.
2) The rule to checkout the libbase58 submodule doesn't work, so use the older
   one-depends-on-the-other approach.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30
Rusty Russell
be4af38d0c channel: unwrap and send incoming HTLCs to master.
So far it just looks it up, marks it resolved, then does nothing.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30
Rusty Russell
8a84e961ed daemon/sphinx: support modern v0 hop payload.
This just means we put the outgoing_cltv_value where we used to put zeroes.
The old daemon simply ignores this, but the new one should check it as per
BOLT 4.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30
Rusty Russell
fed25cc540 lightningd/subd: add a context to requests.
If a peer dies, and then we get a reply, that can cause access after free.
The usual way to handle this is to make the request a child of the peer,
but in fact we still want to catch (and disard) it, so it's a little
more complex internally.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30
Rusty Russell
a815500653 lightningd: hand HSM fd to channeld.
For the moment, it's just to do ECDH to read the onion.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30
Rusty Russell
8146b838e8 daemon/sphinx: split handling.
We want to use HSM to do the ECDH part, so split that out.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30
Rusty Russell
e36a65a189 lightningd/subd: msgcb return -1 to close channel.
They can't free it while we're using it, but they can return a value
to close it.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30
Rusty Russell
eb61446ec8 daemon/invoice: wean off dstate (a little), link into new daemon.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30
Rusty Russell
d3cbde4b46 lightningd/channel: send and receive revoke_and_ack packets.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30
Rusty Russell
2ddc0b696c lightningd/channel: keep old commit points.
We need this, to validate that the secret they give us matches it.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30
Rusty Russell
27764b65f9 lightningd: fix shachain to be 48-bits, with hack for legacy.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30
Rusty Russell
dd15361935 lightningd/derive_basepoints: helper to increment our per_commit_point.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30
Rusty Russell
8f2c4348a9 lightningd/channel.c: tell if we're still awaiting revoke_and_ack.
And make sure we don't send another commit if we are.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30
Rusty Russell
3041cd5915 lightningd/channel.c: clearer functions names, better return values.
We call channel_sent_commit *before* sending (so we know if we need
to), so the name is wrong.  Similarly channel_sent_revoke_and_ack.

We can usefully have them tell is if there is outstanding work to do,
too.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30
Rusty Russell
f83c04fdbe lightningd/channel.c: make callbacks clearly generic
Passing through 'struct peer *' was a layering violation.

Reported-by: Christian Decker <decker.christian@gmail.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30
Rusty Russell
ada1eb5106 lightningd/channel.c: add callbacks for when HTLCs fully committed/removed.
The three cases we care about only happen on specific transitions:
1. They can no longer spend our failed HTLC: we can fail the source now.
2. They are fully committed to their new HTLC htlc: we can forward now.
3. They can no longer timeout their fulfilled HTLC: the funds are ours.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30
Rusty Russell
82a467f131 lightningd/channel: send and receive update_commit
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30
Rusty Russell
0197353bd9 lightningd/Makefile: put timeout into OLD_LIB_SRC for all daemons.
And remove the now-redundant mention in gossipd.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30
Rusty Russell
64b50e5cb6 lightningd/channel: handle adding HTLC, generalize handler.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30
Rusty Russell
4839916038 lightningd/cryptomsg: discard unknown odd messages internally.
This saves all callers having to handle it.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30
Rusty Russell
47da80fdca lightningd: dev_newhtlc command.
For testing point-to-point HTLCs.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30
Rusty Russell
7919279367 lightningd/channel: inter-daemon messages for HTLC handling.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30
Rusty Russell
9b6753173c tools/generate-wire: allow constant multiplier in fields.
Not just len*u8, but 1254*u8 for explicit fixed-length arrays. 

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30
Rusty Russell
185a649572 lightningd: include daemon/sphinx.
We're going to need it to make routes.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30
Rusty Russell
075092411e lightningd/channel: generate htlc txs and wscripts as well.
In practice, this is what we want, either to generate or check signatures.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30
Rusty Russell
dd1a81d8bd lightningd/channel: implement channel_fail_htlc.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30
Rusty Russell
d072f2ec06 wire: understand struct preimage, don't treat it as sha256.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30
Rusty Russell
3a9c559dc6 lightningd/channel: quote BOLT #2 for checking expiry.
https://github.com/lightningnetwork/lightning-rfc/pull/138:

	 BOLT 2: htlc-cltv must be in blocks.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30
Rusty Russell
8cc7f31d44 Update wire from spec 9e0a0e893db389bfe392b2f4db8097949395fe28
Now we send genesis block in handshake.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30
Rusty Russell
e45bc0ce47 Update wire from spec 9a572ff0a3a4d6bceba9c0a9b859692180ecf18f
Only changes commit_sig to commitment_signed, which we don't implement
yet anyway.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30
Rusty Russell
fb80a5f905 Update wire from spec 06a5e6cbdbb4c6f8b8dab444de497cdb9c7d7f02
Only changes revoke_and_ack, which we don't implement yet anyway.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30
Christian Decker
6e81da3cd2 gossip: Fix a tag collision for different directions of a channel
Appending the channel direction ensures that the directions will be
treated independently. Without this only one direction would be
forwarded to the peers.
2017-03-29 12:51:15 +02:00
Christian Decker
7793bd1b9d gossip: Consolidated direction bit computation
The direction bit was computed in several spots and was inconsistent
in some cases. Now we compute it just in routing, and once when
starting up `channeld`, this avoids recomputing it all over the place.
2017-03-28 14:06:48 +10:30
Rusty Russell
5e00beaeb4 lightningd/test: fix tests after 62ccf266fa
Now we correctly use the remote revocation basepoint, we need to set
it in run-channel (instead of the local revocation basepoint).

We also update all the comments, as per (pending) spec commit:
	https://github.com/lightningnetwork/lightning-rfc/pull/137

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-03-24 13:40:36 +10:30
Christian Decker
638594f3c6 jsonrpc: Implemented getchannels JSON-RPC call 2017-03-24 13:24:58 +10:30
Christian Decker
60a2227f0d channel: Disable channels that are lost via a channel_update
Before exiting, `channeld` constructs and sends a `channel_update`
marking the channel as disabled. This is the pro-active signalling
that the channel may no longer be used.
2017-03-23 13:34:03 +10:30
Christian Decker
c8da420a9d routing: Fill in the getroute functionality
Copied the JSON-request parsing from `pay.c`, passing through to
`gossipd`, filling the reply with the `route_hop` serialization, and
serializing as JSON-RPC response.
2017-03-23 13:34:03 +10:30
Christian Decker
2d198e22d0 jsonrpc: Added nested messages for the getroute reply
The `route_hop` struct introduced in the previous refactoring is
reused when returning the reply to a `getroute` request. Since these
are nested messages I added the serialization and deserialization
methods.
2017-03-23 13:34:03 +10:30
Christian Decker
73e65cac4d routing: Refactor get_route into its own method
The JSON-RPC call `getroute` and the functionality to compute the
actual route have been split so that we can reuse it independently of
the JSON-interface. Since this is now a routing-only method I also
moved it into `routing.[ch]` instead of `pay.c`.
2017-03-23 13:34:03 +10:30
Christian Decker
9273b615ab gossip: Added scheleton for getroute calls
This includes the request/reply passed from the main daemon to
`gossipd` and the basic handlers.
2017-03-23 13:34:03 +10:30
Christian Decker
23a1d7d475 gossip: Do not log anything, it breaks a daemon connection!
This came up while debugging the gossip daemon breaking upon calling
`getroute`. It turns out that log was still writing to stdout, but
stdout had been reused for an inter-daemon socket, which would
break...
2017-03-23 13:34:03 +10:30
sstone
62ccf266fa bolt 3: use our revocation basepoint when computing their revocation key 2017-03-23 13:19:34 +10:30
Christian Decker
21d7ed0cf6 subd: Do not close STDOUT in sub-daemons
The STDOUT fd being reused as communication sockets with other daemons
was causing some unexpected crashes if the sub-daemon wrote something,
e.g., using `log_*`. Not closing it should avoid that conflict.
2017-03-21 12:26:22 +01:00
Christian Decker
d2c626820f channel: Wait for 6 confirmations before sending announcement sigs
The protocol specifies that in order for an announcement to be valid,
the channel has to have at least 6 confirmations.
2017-03-20 17:09:12 +01:00
Christian Decker
5028f7b9d9 fixup! pylightning: RPC returns a failure if the connection is lost 2017-03-20 11:18:00 +10:30
Christian Decker
225f29abf4 pylightning: RPC returns a failure if the connection is lost 2017-03-20 11:18:00 +10:30