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peer_wire.c
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peer_wire.c
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#include <wire/peer_wire.h>
static bool unknown_type(enum wire_type t)
{
switch (t) {
case WIRE_INIT:
case WIRE_ERROR:
case WIRE_OPEN_CHANNEL:
case WIRE_ACCEPT_CHANNEL:
case WIRE_FUNDING_CREATED:
case WIRE_FUNDING_SIGNED:
case WIRE_FUNDING_LOCKED:
case WIRE_SHUTDOWN:
case WIRE_CLOSING_SIGNED:
case WIRE_UPDATE_ADD_HTLC:
case WIRE_UPDATE_FULFILL_HTLC:
case WIRE_UPDATE_FAIL_HTLC:
case WIRE_UPDATE_FAIL_MALFORMED_HTLC:
case WIRE_COMMITMENT_SIGNED:
case WIRE_REVOKE_AND_ACK:
case WIRE_UPDATE_FEE:
case WIRE_CHANNEL_REESTABLISH:
case WIRE_ANNOUNCEMENT_SIGNATURES:
case WIRE_CHANNEL_ANNOUNCEMENT:
case WIRE_NODE_ANNOUNCEMENT:
case WIRE_CHANNEL_UPDATE:
case WIRE_PING:
case WIRE_PONG:
case WIRE_QUERY_SHORT_CHANNEL_IDS:
case WIRE_REPLY_SHORT_CHANNEL_IDS_END:
case WIRE_QUERY_CHANNEL_RANGE:
case WIRE_REPLY_CHANNEL_RANGE:
case WIRE_GOSSIP_TIMESTAMP_FILTER:
return false;
}
return true;
}
bool is_msg_for_gossipd(const u8 *cursor)
{
switch ((enum wire_type)fromwire_peektype(cursor)) {
case WIRE_CHANNEL_ANNOUNCEMENT:
case WIRE_NODE_ANNOUNCEMENT:
case WIRE_CHANNEL_UPDATE:
case WIRE_QUERY_SHORT_CHANNEL_IDS:
case WIRE_REPLY_SHORT_CHANNEL_IDS_END:
case WIRE_QUERY_CHANNEL_RANGE:
case WIRE_REPLY_CHANNEL_RANGE:
case WIRE_GOSSIP_TIMESTAMP_FILTER:
case WIRE_PING:
case WIRE_PONG:
return true;
case WIRE_INIT:
case WIRE_ERROR:
case WIRE_OPEN_CHANNEL:
case WIRE_ACCEPT_CHANNEL:
case WIRE_FUNDING_CREATED:
case WIRE_FUNDING_SIGNED:
case WIRE_FUNDING_LOCKED:
case WIRE_SHUTDOWN:
case WIRE_CLOSING_SIGNED:
case WIRE_UPDATE_ADD_HTLC:
case WIRE_UPDATE_FULFILL_HTLC:
case WIRE_UPDATE_FAIL_HTLC:
case WIRE_UPDATE_FAIL_MALFORMED_HTLC:
case WIRE_COMMITMENT_SIGNED:
case WIRE_REVOKE_AND_ACK:
case WIRE_UPDATE_FEE:
case WIRE_CHANNEL_REESTABLISH:
case WIRE_ANNOUNCEMENT_SIGNATURES:
break;
}
return false;
}
/* Return true if it's an unknown ODD message. cursor is a tal ptr. */
bool is_unknown_msg_discardable(const u8 *cursor)
{
enum wire_type t = fromwire_peektype(cursor);
return unknown_type(t) && (t & 1);
}
/* Extract channel_id from various packets, return true if possible. */
bool extract_channel_id(const u8 *in_pkt, struct channel_id *channel_id)
{
u64 ignored_u64;
u32 ignored_u32;
u16 ignored_u16;
u8 ignored_u8;
struct pubkey ignored_pubkey;
struct bitcoin_blkid ignored_chainhash;
if (fromwire_channel_reestablish(in_pkt, channel_id,
&ignored_u64, &ignored_u64))
return true;
if (fromwire_open_channel(in_pkt, &ignored_chainhash,
channel_id, &ignored_u64,
&ignored_u64, &ignored_u64,
&ignored_u64, &ignored_u64,
&ignored_u64, &ignored_u32,
&ignored_u16, &ignored_u16,
&ignored_pubkey, &ignored_pubkey,
&ignored_pubkey, &ignored_pubkey,
&ignored_pubkey, &ignored_pubkey,
&ignored_u8))
return true;
return false;
}