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lease_rates, funder: use overflow helpers

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Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2021-07-11 16:29:42 +09:30
committed by neil saitug
parent 888774e2ad
commit 30c57f9d35
2 changed files with 34 additions and 55 deletions
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80
plugins/funder.c
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@@ -19,6 +19,7 @@
#include <common/json_stream.h>
#include <common/lease_rates.h>
#include <common/node_id.h>
#include <common/overflows.h>
#include <common/psbt_open.h>
#include <common/type_to_string.h>
#include <common/utils.h>
@@ -832,7 +833,7 @@ parse_lease_rates(struct command *cmd, const char *buffer,
u32 *lease_fee_basis,
struct amount_sat *lease_fee_sats,
u32 *funding_weight,
u32 *chan_fee_ppt,
u32 *channel_fee_max_proportional_thousandths,
struct amount_msat *chan_fee_msats)
{
@@ -843,59 +844,37 @@ parse_lease_rates(struct command *cmd, const char *buffer,
else if (lease_fee_basis
|| lease_fee_sats
|| funding_weight
|| chan_fee_ppt
|| channel_fee_max_proportional_thousandths
|| chan_fee_msats)
policy->rates = default_lease_rates(policy);
else
policy->rates = NULL;
/* Sometimes a local macro is neater than the alternative */
#define ASSIGN_OR_RETURN_FAIL(type, member) \
do { \
if (member && \
!assign_overflow_##type(&policy->rates->member, *member)) \
return command_fail_badparam(cmd, #member, \
buffer, tok, "overflow"); \
} while(0)
if (lease_fee_basis) {
policy->rates->lease_fee_basis = *lease_fee_basis;
ASSIGN_OR_RETURN_FAIL(u16, lease_fee_basis);
ASSIGN_OR_RETURN_FAIL(u16, funding_weight);
ASSIGN_OR_RETURN_FAIL(u16, channel_fee_max_proportional_thousandths);
#undef ASSIGN_OR_RETURN_FAIL
/* Check for overflow */
if (policy->rates->lease_fee_basis != *lease_fee_basis)
return command_fail_badparam(cmd, "lease_fee_basis",
buffer, tok, "overflow");
if (chan_fee_msats
&& !assign_overflow_u32(&policy->rates->channel_fee_max_base_msat,
chan_fee_msats->millisatoshis /* Raw: conversion */)) {
return command_fail_badparam(cmd, "channel_fee_max_base_msat",
buffer, tok, "overflow");
}
if (lease_fee_sats) {
policy->rates->lease_fee_base_sat
= lease_fee_sats->satoshis; /* Raw: conversion */
if (policy->rates->lease_fee_base_sat
!= lease_fee_sats->satoshis) /* Raw: comparison */
return command_fail_badparam(cmd, "lease_fee_base_msat",
buffer, tok, "overflow");
}
if (funding_weight) {
policy->rates->funding_weight = *funding_weight;
/* Check for overflow */
if (policy->rates->funding_weight != *funding_weight)
return command_fail_badparam(cmd, "funding_weight",
buffer, tok, "overflow");
}
if (chan_fee_ppt) {
policy->rates->channel_fee_max_proportional_thousandths
= *chan_fee_ppt;
/* Check for overflow */
if (policy->rates->channel_fee_max_proportional_thousandths
!= *chan_fee_ppt)
return command_fail_badparam(cmd, "channel_fee_max_proportional_thousandths",
buffer, tok, "overflow");
}
if (chan_fee_msats) {
policy->rates->channel_fee_max_base_msat
= chan_fee_msats->millisatoshis; /* Raw: conversion */
if (policy->rates->channel_fee_max_base_msat
!= chan_fee_msats->millisatoshis) /* Raw: comparison */
return command_fail_badparam(cmd,
"channel_fee_max_base_msat",
buffer, tok, "overflow");
if (lease_fee_sats
&& !assign_overflow_u32(&policy->rates->lease_fee_base_sat,
lease_fee_sats->satoshis /* Raw: conversion */)) {
return command_fail_badparam(cmd, "lease_fee_base_sat",
buffer, tok, "overflow");
}
return NULL;
@@ -1126,9 +1105,8 @@ static char *option_channel_base(const char *arg, struct funder_policy *policy)
if (!policy->rates)
policy->rates = default_lease_rates(policy);
policy->rates->channel_fee_max_base_msat = amt.millisatoshis; /* Raw: conversion */
if (policy->rates->channel_fee_max_base_msat != amt.millisatoshis) /* Raw: comparison */
if (!assign_overflow_u32(&policy->rates->channel_fee_max_base_msat,
amt.millisatoshis)) /* Raw: conversion */
return tal_fmt(NULL, "channel_fee_max_base_msat overflowed");
return NULL;
@@ -1163,8 +1141,8 @@ static char *option_lease_fee_base(const char *arg,
if (err)
return err;
policy->rates->lease_fee_base_sat = amt.satoshis; /* Raw: conversion */
if (policy->rates->lease_fee_base_sat != amt.satoshis) /* Raw: comparison */
if (!assign_overflow_u32(&policy->rates->lease_fee_base_sat,
amt.satoshis)) /* Raw: conversion */
return tal_fmt(NULL, "lease_fee_base_sat overflowed");
return NULL;