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channel_config: convenient structure for handling open/accept config info.

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Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2017-02-07 12:14:21 +10:30
parent dc3b27e1d3
commit 75c6dd1981
3 changed files with 78 additions and 0 deletions
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1
lightningd/Makefile
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@ -27,6 +27,7 @@ LIGHTNINGD_OLD_OBJS := $(LIGHTNINGD_OLD_SRC:.c=.o)
LIGHTNINGD_OLD_HEADERS := $(LIGHTNINGD_OLD_SRC:.c=.h)
LIGHTNINGD_LIB_SRC := \
lightningd/channel_config.c \
lightningd/cryptomsg.c \
lightningd/key_derive.c

31
lightningd/channel_config.c Normal file
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@ -0,0 +1,31 @@
#include <lightningd/channel_config.h>
#include <wire/wire.h>
void towire_channel_config(u8 **pptr, const struct channel_config *config)
{
towire_u64(pptr, config->dust_limit_satoshis);
towire_u64(pptr, config->max_htlc_value_in_flight_msat);
towire_u64(pptr, config->channel_reserve_satoshis);
towire_u32(pptr, config->minimum_depth);
towire_u32(pptr, config->htlc_minimum_msat);
towire_u16(pptr, config->to_self_delay);
towire_u16(pptr, config->max_accepted_htlcs);
}
struct channel_config *fromwire_channel_config(const tal_t *ctx,
const u8 **ptr, size_t *max)
{
struct channel_config *config = tal(ctx, struct channel_config);
config->dust_limit_satoshis = fromwire_u64(ptr, max);
config->max_htlc_value_in_flight_msat = fromwire_u64(ptr, max);
config->channel_reserve_satoshis = fromwire_u64(ptr, max);
config->minimum_depth = fromwire_u32(ptr, max);
config->htlc_minimum_msat = fromwire_u32(ptr, max);
config->to_self_delay = fromwire_u16(ptr, max);
config->max_accepted_htlcs = fromwire_u16(ptr, max);
if (!*ptr)
return tal_free(config);
return config;
}

46
lightningd/channel_config.h Normal file
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@ -0,0 +1,46 @@
#ifndef LIGHTNING_LIGHTNINGD_CHANNEL_CONFIG_H
#define LIGHTNING_LIGHTNINGD_CHANNEL_CONFIG_H
#include "config.h"
#include <ccan/short_types/short_types.h>
#include <ccan/tal/tal.h>
/* BOLT #2:
*
* 1. type: 32 (`open_channel`)
* 2. data:
* * [8:temporary-channel-id]
* * [8:funding-satoshis]
* * [8:push-msat]
* * [8:dust-limit-satoshis]
* * [8:max-htlc-value-in-flight-msat]
* * [8:channel-reserve-satoshis]
* * [4:htlc-minimum-msat]
* * [4:feerate-per-kw]
* * [2:to-self-delay]
* * [2:max-accepted-htlcs]
*...
* 1. type: 33 (`accept_channel`)
* 2. data:
* * [8:temporary-channel-id]
* * [8:dust-limit-satoshis]
* * [8:max-htlc-value-in-flight-msat]
* * [8:channel-reserve-satoshis]
* * [4:minimum-depth]
* * [4:htlc-minimum-msat]
* * [2:to-self-delay]
* * [2:max-accepted-htlcs]
*/
struct channel_config {
u64 dust_limit_satoshis;
u64 max_htlc_value_in_flight_msat;
u64 channel_reserve_satoshis;
u32 minimum_depth;
u32 htlc_minimum_msat;
u16 to_self_delay;
u16 max_accepted_htlcs;
};
void towire_channel_config(u8 **pptr, const struct channel_config *config);
struct channel_config *fromwire_channel_config(const tal_t *ctx,
const u8 **ptr, size_t *max);
#endif /* LIGHTNING_LIGHTNINGD_CHANNEL_CONFIG_H */