mirrors/core-lightning
1
0
Fork 0
mirror of https://github.com/ElementsProject/lightning.git synced 2024-11-19 01:43:36 +01:00
Code Issues Projects Releases Wiki Activity

short_channel_id_dir: new primitive for one direction of short_channel_id

Browse Source 
Currently only used by gossipd for channel elimination.

Also print them in canonical form (/[01]), so tests need to be
changed.

Suggested-by: @cdecker
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2019-01-15 14:41:27 +10:30 committed by Christian Decker
parent 80753bfbd5
commit 9f1f79587e
16 changed files with 109 additions and 69 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
bitcoin/short_channel_id.c
View File

@ -61,3 +61,29 @@ char *short_channel_id_to_str(const tal_t *ctx, const struct short_channel_id *s
short_channel_id_txnum(scid),
short_channel_id_outnum(scid));
}
bool short_channel_id_dir_from_str(const char *str, size_t strlen,
struct short_channel_id_dir *scidd)
{
const char *slash = memchr(str, '/', strlen);
if (!slash || slash + 2 != str + strlen)
return false;
if (!short_channel_id_from_str(str, slash - str, &scidd->scid))
return false;
if (slash[1] == '0')
scidd->dir = 0;
else if (slash[1] == '1')
scidd->dir = 1;
else
return false;
return true;
}
char *short_channel_id_dir_to_str(const tal_t *ctx,
const struct short_channel_id_dir *scidd)
{
char *str, *scidstr = short_channel_id_to_str(NULL, &scidd->scid);
str = tal_fmt(ctx, "%s/%u", scidstr, scidd->dir);
tal_free(scidstr);
return str;
}

23
bitcoin/short_channel_id.h
View File

@ -15,6 +15,23 @@ struct short_channel_id {
/* Define short_channel_id_eq (no padding) */
STRUCTEQ_DEF(short_channel_id, 0, u64);
/* BOLT #7:
*
* - MUST set `node_id_1` and `node_id_2` to the public keys of the two nodes
* operating the channel, such that `node_id_1` is the numerically-lesser of the
* two DER-encoded keys sorted in ascending numerical order.
*...
* - if the origin node is `node_id_1` in the message:
* - MUST set the `direction` bit of `channel_flags` to 0.
* - otherwise:
* - MUST set the `direction` bit of `channel_flags` to 1.
*/
struct short_channel_id_dir {
struct short_channel_id scid;
/* 0 == from lesser id node, 1 == to lesser id node */
int dir;
};
static inline u32 short_channel_id_blocknum(const struct short_channel_id *scid)
{
return scid->u64 >> 40;
@ -38,4 +55,10 @@ bool short_channel_id_from_str(const char *str, size_t strlen,
char *short_channel_id_to_str(const tal_t *ctx, const struct short_channel_id *scid);
bool short_channel_id_dir_from_str(const char *str, size_t strlen,
struct short_channel_id_dir *scidd);
char *short_channel_id_dir_to_str(const tal_t *ctx,
const struct short_channel_id_dir *scidd);
#endif /* LIGHTNING_BITCOIN_SHORT_CHANNEL_ID_H */

1
common/type_to_string.h
View File

@ -24,6 +24,7 @@ union printable_types {
const secp256k1_pubkey *secp256k1_pubkey;
const struct channel_id *channel_id;
const struct short_channel_id *short_channel_id;
const struct short_channel_id_dir *short_channel_id_dir;
const struct secret *secret;
const struct privkey *privkey;
const secp256k1_ecdsa_signature *secp256k1_ecdsa_signature;

3
gossipd/gossip_wire.csv
View File

@ -33,8 +33,7 @@ gossip_getroute_request,,riskfactor,u16
gossip_getroute_request,,final_cltv,u32
gossip_getroute_request,,fuzz,double
gossip_getroute_request,,num_excluded,u16
gossip_getroute_request,,excluded,num_excluded*struct short_channel_id
gossip_getroute_request,,excluded_dir,num_excluded*bool
gossip_getroute_request,,excluded,num_excluded*struct short_channel_id_dir
gossip_getroute_request,,max_hops,u32
gossip_getroute_reply,3106

1 #include <common/cryptomsg.h>
33 gossip_getroute_request,,excluded_dir,num_excluded*bool gossip_getroute_request,,max_hops,u32
34 gossip_getroute_request,,max_hops,u32 gossip_getroute_reply,3106
35 gossip_getroute_reply,3106 gossip_getroute_reply,,num_hops,u16
36 gossip_getroute_reply,,num_hops,u16 gossip_getroute_reply,,hops,num_hops*struct route_hop
gossip_getroute_reply,,hops,num_hops*struct route_hop
37 gossip_getchannels_request,3007
38 gossip_getchannels_request,,short_channel_id,?struct short_channel_id
39 gossip_getchannels_request,,source,?struct pubkey

7
gossipd/gossipd.c
View File

@ -1871,8 +1871,7 @@ static struct io_plan *getroute_req(struct io_conn *conn, struct daemon *daemon,
u8 *out;
struct route_hop *hops;
double fuzz;
struct short_channel_id *excluded;
bool *excluded_dir;
struct short_channel_id_dir *excluded;
/* To choose between variations, we need to know how much we're
* sending (eliminates too-small channels, and also effects the fees
@ -1884,7 +1883,7 @@ static struct io_plan *getroute_req(struct io_conn *conn, struct daemon *daemon,
&source, &destination,
&msatoshi, &riskfactor,
&final_cltv, &fuzz,
&excluded, &excluded_dir,
&excluded,
&max_hops))
master_badmsg(WIRE_GOSSIP_GETROUTE_REQUEST, msg);
@ -1895,7 +1894,7 @@ static struct io_plan *getroute_req(struct io_conn *conn, struct daemon *daemon,
/* routing.c does all the hard work; can return NULL. */
hops = get_route(tmpctx, daemon->rstate, &source, &destination,
msatoshi, riskfactor, final_cltv,
fuzz, siphash_seed(), excluded, excluded_dir, max_hops);
fuzz, siphash_seed(), excluded, max_hops);
out = towire_gossip_getroute_reply(NULL, hops);
daemon_conn_send(daemon->master, take(out));

22
gossipd/routing.c
View File

@ -1003,7 +1003,7 @@ static void update_pending(struct pending_cannouncement *pending,
u32 timestamp, const u8 *update,
const u8 direction)
{
SUPERVERBOSE("Deferring update for pending channel %s(%d)",
SUPERVERBOSE("Deferring update for pending channel %s/%d",
type_to_string(tmpctx, struct short_channel_id,
&pending->short_channel_id), direction);
@ -1043,12 +1043,12 @@ static void set_connection_values(struct chan *chan,
/* If it was temporarily unroutable, re-enable */
c->unroutable_until = 0;
SUPERVERBOSE("Channel %s(%d) was updated.",
SUPERVERBOSE("Channel %s/%d was updated.",
type_to_string(tmpctx, struct short_channel_id, &chan->scid),
idx);
if (c->proportional_fee >= MAX_PROPORTIONAL_FEE) {
status_trace("Channel %s(%d) massive proportional fee %u:"
status_trace("Channel %s/%d massive proportional fee %u:"
" disabling.",
type_to_string(tmpctx, struct short_channel_id,
&chan->scid),
@ -1272,7 +1272,7 @@ u8 *handle_channel_update(struct routing_state *rstate, const u8 *update TAKES,
return err;
}
status_trace("Received channel_update for channel %s(%d) now %s was %s (from %s)",
status_trace("Received channel_update for channel %s/%d now %s was %s (from %s)",
type_to_string(tmpctx, struct short_channel_id,
&short_channel_id),
channel_flags & 0x01,
@ -1506,8 +1506,7 @@ struct route_hop *get_route(const tal_t *ctx, struct routing_state *rstate,
const u64 msatoshi, double riskfactor,
u32 final_cltv,
double fuzz, const struct siphash_seed *base_seed,
const struct short_channel_id *excluded,
const bool *excluded_dir,
const struct short_channel_id_dir *excluded,
size_t max_hops)
{
struct chan **route;
@ -1518,17 +1517,16 @@ struct route_hop *get_route(const tal_t *ctx, struct routing_state *rstate,
struct node *n;
u64 *saved_capacity;
assert(tal_count(excluded) == tal_count(excluded_dir));
saved_capacity = tal_arr(tmpctx, u64, tal_count(excluded));
/* Temporarily set excluded channels' capacity to zero. */
for (size_t i = 0; i < tal_count(excluded); i++) {
struct chan *chan = get_channel(rstate, &excluded[i]);
struct chan *chan = get_channel(rstate, &excluded[i].scid);
if (!chan)
continue;
saved_capacity[i]
= chan->half[excluded_dir[i]].htlc_maximum_msat;
chan->half[excluded_dir[i]].htlc_maximum_msat = 0;
= chan->half[excluded[i].dir].htlc_maximum_msat;
chan->half[excluded[i].dir].htlc_maximum_msat = 0;
}
route = find_route(ctx, rstate, source, destination, msatoshi,
@ -1537,10 +1535,10 @@ struct route_hop *get_route(const tal_t *ctx, struct routing_state *rstate,
/* Now restore the capacity. */
for (size_t i = 0; i < tal_count(excluded); i++) {
struct chan *chan = get_channel(rstate, &excluded[i]);
struct chan *chan = get_channel(rstate, &excluded[i].scid);
if (!chan)
continue;
chan->half[excluded_dir[i]].htlc_maximum_msat
chan->half[excluded[i].dir].htlc_maximum_msat
= saved_capacity[i];
}

3
gossipd/routing.h
View File

@ -268,8 +268,7 @@ struct route_hop *get_route(const tal_t *ctx, struct routing_state *rstate,
u32 final_cltv,
double fuzz,
const struct siphash_seed *base_seed,
const struct short_channel_id *excluded,
const bool *excluded_dir,
const struct short_channel_id_dir *excluded,
size_t max_hops);
/* Disable channel(s) based on the given routing failure. */
void routing_failure(struct routing_state *rstate,

36
lightningd/gossip_control.c
View File

@ -292,27 +292,6 @@ static void json_getroute_reply(struct subd *gossip UNUSED, const u8 *reply, con
was_pending(command_success(cmd, response));
}
static bool json_to_short_channel_id_with_dir(const char *buffer,
const jsmntok_t *tok,
struct short_channel_id *scid,
bool *dir)
{
/* Ends in /0 or /1 */
if (tok->end - tok->start < 2)
return false;
if (buffer[tok->end - 2] != '/')
return false;
if (buffer[tok->end - 1] == '0')
*dir = false;
else if (buffer[tok->end - 1] == '1')
*dir = true;
else
return false;
return short_channel_id_from_str(buffer + tok->start,
tok->end - tok->start - 2, scid);
}
static struct command_result *json_getroute(struct command *cmd,
const char *buffer,
const jsmntok_t *obj UNNEEDED,
@ -325,8 +304,7 @@ static struct command_result *json_getroute(struct command *cmd,
u64 *msatoshi;
unsigned *cltv;
double *riskfactor;
struct short_channel_id *excluded;
bool *excluded_dir;
struct short_channel_id_dir *excluded;
u32 *max_hops;
/* Higher fuzz means that some high-fee paths can be discounted
@ -356,16 +334,15 @@ static struct command_result *json_getroute(struct command *cmd,
const jsmntok_t *t, *end = json_next(excludetok);
size_t i;
excluded = tal_arr(cmd, struct short_channel_id,
excluded = tal_arr(cmd, struct short_channel_id_dir,
excludetok->size);
excluded_dir = tal_arr(cmd, bool, excludetok->size);
for (i = 0, t = excludetok + 1;
t < end;
t = json_next(t), i++) {
if (!json_to_short_channel_id_with_dir(buffer, t,
&excluded[i],
&excluded_dir[i])) {
if (!short_channel_id_dir_from_str(buffer + t->start,
t->end - t->start,
&excluded[i])) {
return command_fail(cmd, JSONRPC2_INVALID_PARAMS,
"%.*s is not a valid"
" short_channel_id/direction",
@ -375,13 +352,12 @@ static struct command_result *json_getroute(struct command *cmd,
}
} else {
excluded = NULL;
excluded_dir = NULL;
}
u8 *req = towire_gossip_getroute_request(cmd, source, destination,
*msatoshi, *riskfactor * 1000,
*cltv, fuzz,
excluded, excluded_dir,
excluded,
*max_hops);
subd_req(ld->gossip, ld->gossip, req, -1, 0, json_getroute_reply, cmd);
return command_still_pending(cmd);

2
lightningd/payalgo.c
View File

@ -557,7 +557,7 @@ static struct command_result *json_pay_try(struct pay *pay)
pay->msatoshi + overpayment,
pay->riskfactor,
pay->min_final_cltv_expiry,
&pay->fuzz, NULL, NULL,
&pay->fuzz, NULL,
ROUTING_MAX_HOPS);
subd_req(pay->try_parent, cmd->ld->gossip, req, -1, 0, json_pay_getroute_reply, pay);

16
tests/test_connection.py
View File

@ -1446,23 +1446,23 @@ def test_restart_many_payments(node_factory):
l1_logs = []
for i in range(len(innodes)):
scid = inchans[i]
l1_logs += [r'update for channel {}\(0\) now ACTIVE'.format(scid),
r'update for channel {}\(1\) now ACTIVE'.format(scid),
l1_logs += [r'update for channel {}/0 now ACTIVE'.format(scid),
r'update for channel {}/1 now ACTIVE'.format(scid),
'to CHANNELD_NORMAL']
innodes[i].daemon.wait_for_logs([r'update for channel {}\(0\) now ACTIVE'
innodes[i].daemon.wait_for_logs([r'update for channel {}/0 now ACTIVE'
.format(scid),
r'update for channel {}\(1\) now ACTIVE'
r'update for channel {}/1 now ACTIVE'
.format(scid),
'to CHANNELD_NORMAL'])
for i in range(len(outnodes)):
scid = outchans[i]
l1_logs += [r'update for channel {}\(0\) now ACTIVE'.format(scid),
r'update for channel {}\(1\) now ACTIVE'.format(scid),
l1_logs += [r'update for channel {}/0 now ACTIVE'.format(scid),
r'update for channel {}/1 now ACTIVE'.format(scid),
'to CHANNELD_NORMAL']
outnodes[i].daemon.wait_for_logs([r'update for channel {}\(0\) now ACTIVE'
outnodes[i].daemon.wait_for_logs([r'update for channel {}/0 now ACTIVE'
.format(scid),
r'update for channel {}\(1\) now ACTIVE'
r'update for channel {}/1 now ACTIVE'
.format(scid),
'to CHANNELD_NORMAL'])

4
tests/test_gossip.py
View File

@ -978,9 +978,9 @@ def test_getroute_exclude(node_factory, bitcoind):
bitcoind.generate_block(5)
# We don't wait above, because we care about it hitting l1.
l1.daemon.wait_for_logs([r'update for channel {}\(0\) now ACTIVE'
l1.daemon.wait_for_logs([r'update for channel {}/0 now ACTIVE'
.format(scid),
r'update for channel {}\(1\) now ACTIVE'
r'update for channel {}/1 now ACTIVE'
.format(scid)])
# l3 id is > l2 id, so 1 means l3->l2

2
tests/test_pay.py
View File

@ -151,7 +151,7 @@ def test_pay_get_error_with_update(node_factory):
l1.daemon.wait_for_log(r'Extracted channel_update 0102.*from onionreply 10070088[0-9a-fA-F]{88}')
# And now monitor for l1 to apply the channel_update we just extracted
l1.daemon.wait_for_log(r'Received channel_update for channel {}\(.\) now DISABLED was ACTIVE \(from error\)'.format(chanid2))
l1.daemon.wait_for_log(r'Received channel_update for channel {}/. now DISABLED was ACTIVE \(from error\)'.format(chanid2))
def test_pay_optional_args(node_factory):

14
tests/utils.py
View File

@ -536,14 +536,14 @@ class LightningNode(object):
if wait_for_active:
# We wait until gossipd sees both local updates, as well as status NORMAL,
# so it can definitely route through.
self.daemon.wait_for_logs([r'update for channel {}\(0\) now ACTIVE'
self.daemon.wait_for_logs([r'update for channel {}/0 now ACTIVE'
.format(scid),
r'update for channel {}\(1\) now ACTIVE'
r'update for channel {}/1 now ACTIVE'
.format(scid),
'to CHANNELD_NORMAL'])
l2.daemon.wait_for_logs([r'update for channel {}\(0\) now ACTIVE'
l2.daemon.wait_for_logs([r'update for channel {}/0 now ACTIVE'
.format(scid),
r'update for channel {}\(1\) now ACTIVE'
r'update for channel {}/1 now ACTIVE'
.format(scid),
'to CHANNELD_NORMAL'])
return scid
@ -596,9 +596,9 @@ class LightningNode(object):
# (or for local channels, at least a local announcement)
def wait_for_routes(self, channel_ids):
# Could happen in any order...
self.daemon.wait_for_logs(['Received channel_update for channel {}\\(0\\)'.format(c)
self.daemon.wait_for_logs(['Received channel_update for channel {}/0'.format(c)
for c in channel_ids]
+ ['Received channel_update for channel {}\\(1\\)'.format(c)
+ ['Received channel_update for channel {}/1'.format(c)
for c in channel_ids])
def pay(self, dst, amt, label=None):
@ -829,7 +829,7 @@ class NodeFactory(object):
for src, dst in connections:
wait_for(lambda: src.channel_state(dst) == 'CHANNELD_NORMAL')
scid = src.get_channel_scid(dst)
src.daemon.wait_for_log(r'Received channel_update for channel {scid}\(.\) now ACTIVE'.format(scid=scid))
src.daemon.wait_for_log(r'Received channel_update for channel {scid}/. now ACTIVE'.format(scid=scid))
scids.append(scid)
if not wait_for_announce:

8
wire/fromwire.c
View File

@ -161,6 +161,13 @@ void fromwire_short_channel_id(const u8 **cursor, size_t *max,
short_channel_id->u64 = fromwire_u64(cursor, max);
}
void fromwire_short_channel_id_dir(const u8 **cursor, size_t *max,
struct short_channel_id_dir *scidd)
{
fromwire_short_channel_id(cursor, max, &scidd->scid);
scidd->dir = fromwire_bool(cursor, max);
}
void fromwire_sha256(const u8 **cursor, size_t *max, struct sha256 *sha256)
{
fromwire(cursor, max, sha256, sizeof(*sha256));
@ -235,6 +242,7 @@ char *fromwire_wirestring(const tal_t *ctx, const u8 **cursor, size_t *max)
}
REGISTER_TYPE_TO_STRING(short_channel_id, short_channel_id_to_str);
REGISTER_TYPE_TO_STRING(short_channel_id_dir, short_channel_id_dir_to_str);
REGISTER_TYPE_TO_HEXSTR(channel_id);
/* BOLT #2:

7
wire/towire.c
View File

@ -109,6 +109,13 @@ void towire_short_channel_id(u8 **pptr,
towire_u64(pptr, short_channel_id->u64);
}
void towire_short_channel_id_dir(u8 **pptr,
const struct short_channel_id_dir *scidd)
{
towire_short_channel_id(pptr, &scidd->scid);
towire_bool(pptr, scidd->dir);
}
void towire_sha256(u8 **pptr, const struct sha256 *sha256)
{
towire(pptr, sha256, sizeof(*sha256));

4
wire/wire.h
View File

@ -47,6 +47,8 @@ void towire_secp256k1_ecdsa_recoverable_signature(u8 **pptr,
void towire_channel_id(u8 **pptr, const struct channel_id *channel_id);
void towire_short_channel_id(u8 **pptr,
const struct short_channel_id *short_channel_id);
void towire_short_channel_id_dir(u8 **pptr,
const struct short_channel_id_dir *scidd);
void towire_sha256(u8 **pptr, const struct sha256 *sha256);
void towire_sha256_double(u8 **pptr, const struct sha256_double *sha256d);
void towire_bitcoin_txid(u8 **pptr, const struct bitcoin_txid *txid);
@ -87,6 +89,8 @@ void fromwire_channel_id(const u8 **cursor, size_t *max,
struct channel_id *channel_id);
void fromwire_short_channel_id(const u8 **cursor, size_t *max,
struct short_channel_id *short_channel_id);
void fromwire_short_channel_id_dir(const u8 **cursor, size_t *max,
struct short_channel_id_dir *scidd);
void fromwire_sha256(const u8 **cursor, size_t *max, struct sha256 *sha256);
void fromwire_sha256_double(const u8 **cursor, size_t *max,
struct sha256_double *sha256d);