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openingd: pull out setup funder checks into separate method 

Useful for adding the funder_start stuff
This commit is contained in:
lisa neigut 2019-05-22 14:23:35 -07:00 committed by Rusty Russell
parent 8103acd9b3
commit 685aa47b65
1 changed files with 31 additions and 21 deletions
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52
openingd/openingd.c
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@ -438,6 +438,35 @@ static u8 *opening_negotiate_msg(const tal_t *ctx, struct state *state,
}
}
static bool setup_channel_funder(struct state *state)
{
/*~ For symmetry, we calculate our own reserve even though lightningd
* could do it for the we-are-funding case. */
set_reserve(state);
/*~ Grab a random ID until the funding tx is created (we can't do that
* until we know their funding_pubkey) */
temporary_channel_id(&state->channel_id);
/* BOLT #2:
*
* The sending node:
*...
* - MUST set `funding_satoshis` to less than 2^24 satoshi.
*/
if (amount_sat_greater(state->funding, state->chainparams->max_funding)) {
status_failed(STATUS_FAIL_MASTER_IO,
"funding_satoshis must be < %s, not %s",
type_to_string(tmpctx, struct amount_sat,
&state->chainparams->max_funding),
type_to_string(tmpctx, struct amount_sat,
&state->funding));
return false;
}
return true;
}
/* We start the 'fund a channel' negotation with the supplied peer, but
* stop when we get to the part where we need the funding txid */
static u8 *funder_channel_start(struct state *state,
@ -468,27 +497,8 @@ static u8 *funder_channel(struct state *state,
struct amount_msat local_msat;
char* err_reason;
/*~ For symmetry, we calculate our own reserve even though lightningd
* could do it for the we-are-funding case. */
set_reserve(state);
/*~ Grab a random ID until the funding tx is created (we can't do that
* until we know their funding_pubkey) */
temporary_channel_id(&state->channel_id);
/* BOLT #2:
*
* The sending node:
*...
* - MUST set `funding_satoshis` to less than 2^24 satoshi.
*/
if (amount_sat_greater(state->funding, state->chainparams->max_funding))
status_failed(STATUS_FAIL_MASTER_IO,
"funding_satoshis must be < %s, not %s",
type_to_string(tmpctx, struct amount_sat,
&state->chainparams->max_funding),
type_to_string(tmpctx, struct amount_sat,
&state->funding));
if (!setup_channel_funder(state))
goto fail;
/* BOLT #2:
*