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gossip_control: Add fuzz and seed parameters.

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In preparation for improved route randomization.
This commit is contained in:
ZmnSCPxj 2018-02-15 09:18:29 +00:00 committed by Rusty Russell
parent cfcdcf3993
commit 2b782ee436
1 changed files with 34 additions and 1 deletions
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35
lightningd/gossip_control.c
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@ -299,9 +299,13 @@ static void json_getroute(struct command *cmd, const char *buffer, const jsmntok
struct lightningd *ld = cmd->ld; struct lightningd *ld = cmd->ld;
struct pubkey source = ld->id, destination; struct pubkey source = ld->id, destination;
jsmntok_t *idtok, *msatoshitok, *riskfactortok, *cltvtok, *fromidtok; jsmntok_t *idtok, *msatoshitok, *riskfactortok, *cltvtok, *fromidtok;
jsmntok_t *fuzztok;
jsmntok_t *seedtok;
u64 msatoshi; u64 msatoshi;
unsigned cltv = 9; unsigned cltv = 9;
double riskfactor; double riskfactor;
double fuzz = 5.0;
const char *seed = "default";
if (!json_get_params(cmd, buffer, params, if (!json_get_params(cmd, buffer, params,
"id", &idtok, "id", &idtok,
@ -309,6 +313,8 @@ static void json_getroute(struct command *cmd, const char *buffer, const jsmntok
"riskfactor", &riskfactortok, "riskfactor", &riskfactortok,
"?cltv", &cltvtok, "?cltv", &cltvtok,
"?fromid", &fromidtok, "?fromid", &fromidtok,
"?fuzzpercent", &fuzztok,
"?seed", &seedtok,
NULL)) { NULL)) {
return; return;
} }
@ -342,6 +348,30 @@ static void json_getroute(struct command *cmd, const char *buffer, const jsmntok
return; return;
} }
if (fuzztok &&
!json_tok_double(buffer, fuzztok, &fuzz)) {
command_fail(cmd, "'%.*s' is not a valid double",
(int)(fuzztok->end - fuzztok->start),
buffer + fuzztok->start);
return;
}
if (!(0.0 <= fuzz && fuzz <= 100.0)) {
command_fail(cmd,
"fuzz must be in range 0.0 <= %f <= 100.0",
fuzz);
return;
}
/* Convert from percentage */
fuzz = fuzz / 100.0;
if (seedtok)
seed = tal_strndup(cmd, buffer + seedtok->start,
seedtok->end - seedtok->start);
/* TODO: include in getroute request */
(void) fuzz;
(void) seed;
u8 *req = towire_gossip_getroute_request(cmd, &source, &destination, msatoshi, riskfactor*1000, cltv); u8 *req = towire_gossip_getroute_request(cmd, &source, &destination, msatoshi, riskfactor*1000, cltv);
subd_req(ld->gossip, ld->gossip, req, -1, 0, json_getroute_reply, cmd); subd_req(ld->gossip, ld->gossip, req, -1, 0, json_getroute_reply, cmd);
command_still_pending(cmd); command_still_pending(cmd);
@ -350,7 +380,10 @@ static void json_getroute(struct command *cmd, const char *buffer, const jsmntok
static const struct json_command getroute_command = { static const struct json_command getroute_command = {
"getroute", "getroute",
json_getroute, json_getroute,
"Show route to {id} for {msatoshi}, using {riskfactor} and optional {cltv} (default 9), if specified search from {source} otherwise use this node as source." "Show route to {id} for {msatoshi}, using {riskfactor} and optional {cltv} (default 9). "
"If specified search from {fromid} otherwise use this node as source. "
"Randomize the route with up to {fuzzpercent} (0.0 -> 100.0, default 5.0) "
"using {seed} as an arbitrary-size string seed."
}; };
AUTODATA(json_command, &getroute_command); AUTODATA(json_command, &getroute_command);