aljaz/lightning
1
0
Fork 0
mirror of https://github.com/aljazceru/lightning.git synced 2026-01-06 23:54:22 +01:00
Code Issues Packages Projects Releases Wiki Activity

features: don't assume we'll always only advertize optional features.

Browse Source 
Generalize things a bit so OPTIONAL_FEATURE() and COMPULSORY_FEATURE()
work with either odd or even features, then explicitly use OPTIONAL_FEATURE
in our internal feature array.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2019-08-28 13:39:04 +09:30
committed by Christian Decker
parent a38131f349
commit 17edcfa24d
2 changed files with 25 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
common/features.c
View File

@@ -4,12 +4,12 @@
#include <wire/peer_wire.h>
static const u32 our_localfeatures[] = {
LOCAL_DATA_LOSS_PROTECT,
LOCAL_INITIAL_ROUTING_SYNC,
LOCAL_UPFRONT_SHUTDOWN_SCRIPT,
LOCAL_GOSSIP_QUERIES,
OPTIONAL_FEATURE(LOCAL_DATA_LOSS_PROTECT),
OPTIONAL_FEATURE(LOCAL_INITIAL_ROUTING_SYNC),
OPTIONAL_FEATURE(LOCAL_UPFRONT_SHUTDOWN_SCRIPT),
OPTIONAL_FEATURE(LOCAL_GOSSIP_QUERIES),
#if EXPERIMENTAL_FEATURES
LOCAL_EXTENDED_GOSSIP_QUERIES
OPTIONAL_FEATURE(LOCAL_GOSSIP_QUERIES_EX)
#endif
};
@@ -40,13 +40,12 @@ static bool test_bit(const u8 *features, size_t byte, unsigned int bit)
return features[tal_count(features) - 1 - byte] & (1 << (bit % 8));
}
/* We don't insist on anything, it's all optional. */
static u8 *mkfeatures(const tal_t *ctx, const u32 *arr, size_t n)
{
u8 *f = tal_arr(ctx, u8, 0);
for (size_t i = 0; i < n; i++)
set_bit(&f, OPTIONAL_FEATURE(arr[i]));
set_bit(&f, arr[i]);
return f;
}
@@ -74,9 +73,7 @@ static bool feature_set(const u8 *features, size_t bit)
bool feature_offered(const u8 *features, size_t f)
{
assert(f % 2 == 0);
return feature_set(features, f)
return feature_set(features, COMPULSORY_FEATURE(f))
|| feature_set(features, OPTIONAL_FEATURE(f));
}
@@ -85,7 +82,8 @@ static bool feature_supported(int feature_bit,
size_t num_supported)
{
for (size_t i = 0; i < num_supported; i++) {
if (supported[i] == feature_bit)
if (OPTIONAL_FEATURE(supported[i])
== OPTIONAL_FEATURE(feature_bit))
return true;
}
return false;