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common/sphinx: make onionpacket.routinginfo a dynamic member.

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Still asserts that it's the standard size, but makes it a dynamic
member.  For simpliciy, changes the parse_onionpacket API (it must be
a tal object now, so we might as well allocate it here to catch all
the callers).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2020-12-08 21:05:32 +10:30
committed by Christian Decker
parent 3776af4a35
commit 32c7c133f4
13 changed files with 118 additions and 95 deletions
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14
devtools/onion.c
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@@ -102,7 +102,7 @@ static void do_generate(int argc, char **argv,
}
}
packet = create_onionpacket(ctx, sp, &shared_secrets);
packet = create_onionpacket(ctx, sp, ROUTING_INFO_SIZE, &shared_secrets);
if (rvnode_id != NULL) {
comp = sphinx_compress(ctx, packet, sp);
@@ -123,21 +123,21 @@ static struct route_step *decode_with_privkey(const tal_t *ctx, const u8 *onion,
{
struct privkey seckey;
struct route_step *step;
struct onionpacket packet;
struct onionpacket *packet;
enum onion_wire why_bad;
struct secret shared_secret;
if (!hex_decode(hexprivkey, strlen(hexprivkey), &seckey, sizeof(seckey)))
errx(1, "Invalid private key hex '%s'", hexprivkey);
why_bad = parse_onionpacket(onion, TOTAL_PACKET_SIZE(ROUTING_INFO_SIZE), &packet);
packet = parse_onionpacket(tmpctx, onion, TOTAL_PACKET_SIZE(ROUTING_INFO_SIZE), &why_bad);
if (why_bad != 0)
if (!packet)
errx(1, "Error parsing message: %s", onion_wire_name(why_bad));
if (!onion_shared_secret(&shared_secret, &packet, &seckey))
if (!onion_shared_secret(&shared_secret, packet, &seckey))
errx(1, "Error creating shared secret.");
step = process_onionpacket(ctx, &packet, &shared_secret, assocdata,
step = process_onionpacket(ctx, packet, &shared_secret, assocdata,
tal_bytelen(assocdata), true);
return step;
@@ -257,7 +257,7 @@ static void runtest(const char *filename)
}
sphinx_add_hop(path, &pubkey, full);
}
res = create_onionpacket(ctx, path, &shared_secrets);
res = create_onionpacket(ctx, path, ROUTING_INFO_SIZE, &shared_secrets);
serialized = serialize_onionpacket(ctx, res);
if (!serialized)