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a4dfe3ad72
This shows where funds are going at any time (fees vs to each side). funding.c is mainly rewritten, and should be clearer now. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
61 lines
1.5 KiB
C
61 lines
1.5 KiB
C
#ifndef LIGHTNING_FUNDING_H
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#define LIGHTNING_FUNDING_H
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#include <ccan/tal/tal.h>
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#include <stdbool.h>
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#include "lightning.pb-c.h"
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struct channel_oneside {
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uint64_t pay, fee;
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};
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struct channel_state {
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struct channel_oneside a, b;
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};
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/**
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* initial_funding: Given A, B, and anchor, what is initial state?
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* @ctx: tal context to allocate return value from.
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* @a: A's openchannel offer
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* @b: B's openchannel offer
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* @anchor: The anchor offer (A or B)
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* @fee: amount to pay in fees.
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*
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* Returns state, or NULL if malformed.
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*/
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struct channel_state *initial_funding(const tal_t *ctx,
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const OpenChannel *a,
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const OpenChannel *b,
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const OpenAnchor *anchor,
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uint64_t fee);
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/**
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* funding_delta: With this change, what's the new state?
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* @a: A's openchannel offer
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* @b: B's openchannel offer
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* @anchor: The anchor offer (A or B)
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* @delta_a: How much A changes (-ve => A pay B, +ve => B pays A)
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* @a_side: channel a's state to update.
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* @b_side: channel b's state to update.
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*/
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bool funding_delta(const OpenChannel *a,
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const OpenChannel *b,
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const OpenAnchor *anchor,
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int64_t delta_a,
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struct channel_oneside *a_side,
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struct channel_oneside *b_side);
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/**
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* commit_fee: Fee amount for commit tx.
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* @a: A's openchannel offer
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* @b: B's openchannel offer
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*/
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uint64_t commit_fee(const OpenChannel *a, const OpenChannel *b);
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/**
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* invert_cstate: Get the other side's state.
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* @cstate: the state to invert.
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*/
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void invert_cstate(struct channel_state *cstate);
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#endif /* LIGHTNING_FUNDING_H */
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