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127 Commits

Author SHA1 Message Date
Rusty Russell
2346f6bf14 daemon: routefail command. 
This should be renamed: it's actually any kind of after-the-fact failure.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2016-01-22 06:45:28 +10:30
Rusty Russell
1e82799852 daemon: fulfillhtlc command 
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2016-01-22 06:45:28 +10:30
Rusty Russell
17359279b2 daemon: getpeers: list HTLCs. 
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2016-01-22 06:45:28 +10:30
Rusty Russell
e1f772a443 peer: implement committed_to_htlcs(). 
Simply count how many HTLCs are in our current funding state.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2016-01-22 06:45:28 +10:30
Rusty Russell
9efdbbb21b peer: use funding.h's struct channel_htlc. 
Instead of our own fields for the current htlc.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2016-01-22 06:45:27 +10:30
Rusty Russell
fc4c94cb06 daemon: simple close support for the case of one side closing transaction. 
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2016-01-22 06:45:27 +10:30
Rusty Russell
6bdaa5d1ca daemon: newhtlc command. 
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2016-01-22 06:45:27 +10:30
Rusty Russell
645958920e peer: make_commit_txs() helper. 
We need to call it in several places, so unify it into a single function.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2016-01-22 06:45:27 +10:30
Rusty Russell
f5538bd1d2 daemon: test scripts. 
We comment out the peer_create_close_tx() abort for now, so we
can test.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2016-01-22 06:45:27 +10:30
Rusty Russell
3c9fd4fbe6 daemon: code to open channel and watch anchor. 
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2016-01-22 06:45:05 +10:30
Rusty Russell
ecbe671688 peer: keep current commit txs, anchor state, channel funding and their sig. 
This lets us implement accept_pkt_anchor().

Also had to predeclare sha256 in commit_tx.h, revealed by the new
includes.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2016-01-22 06:44:27 +10:30
Rusty Russell
ae04116883 daemon: send open_pkt on initialization. 
This gets us to the creation of the anchor transaction, where we stop.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2016-01-22 06:44:25 +10:30
Rusty Russell
abc002ff15 daemon: add state.c. 
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2016-01-22 06:44:13 +10:30
Rusty Russell
c51a8d804f bitcoind: routine to send to a specific address. 
We use this to create our anchor payment.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2016-01-22 06:41:49 +10:30
Rusty Russell
fc49e3fd74 daemon: rename 'state' to 'dstate' everywhere. 
This is the daemon state, not the state machine state.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2016-01-22 06:41:49 +10:30
Rusty Russell
b04392609a daemon: encapsulate each side's state in a struct. 
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2016-01-22 06:41:49 +10:30
Rusty Russell
0376e08fea daemon: peer needs to know who offered the anchor. 
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2016-01-22 06:41:49 +10:30
Rusty Russell
e9237f94b1 daemon/watch: API to watch various bitcoin transactions. 
This uses the functions in bitcoind to provide callbacks when various
things happen.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2016-01-22 06:41:49 +10:30
Rusty Russell
bf3080ca09 secrets: handle per-peer secrets as well. 
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2016-01-22 06:41:48 +10:30
Rusty Russell
08ccb4b6f0 getpeers: new command. 
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2016-01-22 06:41:48 +10:30
Rusty Russell
d8959b3117 peer: make connect command an async command. 
So it can return failure.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2016-01-22 06:41:48 +10:30
Rusty Russell
366f8a5f3f dns: add failure callback. 
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2016-01-22 06:41:48 +10:30
Rusty Russell
d68ae0b612 jsonrpc: adapt it to be async. 
This allows for JSON commands which aren't instantaneous.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2016-01-22 06:41:48 +10:30
Rusty Russell
74f294e36c daemon: encrypted communication (version 3) 
After useful feedback from Anthony Towns and Mats Jerratsch (of
thunder.network fame), this is the third version of inter-node crypto.

1) First, each side sends a 33-byte session pubkey.  This is a
   bitcoin-style compressed EC key, unique for each session.
  
2) ECDH is used to derive a shared secret.  From this we generate
   the following transmission encoding parameters for each side:
   Session AES-128 key: SHA256(shared-secret || my-sessionpubkey || 0)
   Session HMAC key: SHA256(shared-secret || my-sessionpubkey || 1)
   IV for AES: SHA256(shared-secret || my-sessionpubkey || 2)

3) All packets from then on are encrypted of form:
	/* HMAC, covering totlen and data */
	struct sha256 hmac;
	/* Total data transmitted (including this). */
	le64 totlen;
	/* Encrypted contents, rounded up to 16 byte boundary. */
	u8 data[];

4) The first packet is an Authenticate protobuf, containing this node's
   pubkey, and a bitcoin-style EC signature of the other side's session
   pubkey.

5) Unknown protobuf fields are handled in the protocol as follows
   (including in the initial Authenticate packet):

   1) Odd numbered fields are optional, and backwards compatible.
   2) Even numbered fields are required; abort if you get one.

Currently both sides just send an error packet "hello" after the
handshake, and make sure they receive the same.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2016-01-22 06:41:48 +10:30
Rusty Russell
2df28021ac daemon: command to connect 
Now we can connect two daemons to each other.  Who both say Hello! and
close.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2016-01-22 06:41:48 +10:30
Rusty Russell
e4224f72d4 daemon: netaddr 
Structure for a net address.  We can expand it later to cover exotic
address types (Tor?).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2016-01-22 06:41:48 +10:30
Rusty Russell
469401610f daemon: socket code. 
At the moment, if you connect it just says Hello! and closes the socket.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2016-01-22 06:41:48 +10:30