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DB: Store the remote channel announcement signatures into DB

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1. Add the fields of remote channel announcement signatures into TABLE channels
2. Add the related function
This commit is contained in:
trueptolemy 2019-05-15 23:21:26 +08:00 committed by Christian Decker
parent 22600faed7
commit b41d529b28
3 changed files with 93 additions and 0 deletions
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3
wallet/db.c
View File

@ -382,6 +382,9 @@ static struct migration dbmigrations[] = {
{ "ALTER TABLE channels ADD remote_upfront_shutdown_script BLOB;", NULL },
/* PR #2524: Add failcode into forward_payment */
{ "ALTER TABLE forwarded_payments ADD failcode INTEGER;", NULL },
/* remote signatures for channel announcement */
{ "ALTER TABLE channels ADD remote_ann_node_sig BLOB;", NULL },
{ "ALTER TABLE channels ADD remote_ann_bitcoin_sig BLOB;", NULL },
};
/* Leak tracking. */

62
wallet/wallet.c
View File

@ -595,6 +595,50 @@ wallet_htlc_sigs_load(const tal_t *ctx, struct wallet *w, u64 channelid)
return htlc_sigs;
}
bool wallet_remote_ann_sigs_load(const tal_t *ctx, struct wallet *w, u64 id,
secp256k1_ecdsa_signature **remote_ann_node_sig,
secp256k1_ecdsa_signature **remote_ann_bitcoin_sig)
{
sqlite3_stmt *stmt;
int res;
stmt = db_select_prepare(w->db,
"remote_ann_node_sig, remote_ann_bitcoin_sig"
" FROM channels WHERE id = ?");
sqlite3_bind_int64(stmt, 1, id);
res = sqlite3_step(stmt);
/* This must succeed, since we know the channel exists */
assert(res == SQLITE_ROW);
/* if only one sig exists, forget the sig and hope peer send new ones*/
if(sqlite3_column_type(stmt, 0) == SQLITE_NULL ||
sqlite3_column_type(stmt, 1) == SQLITE_NULL) {
*remote_ann_node_sig = *remote_ann_bitcoin_sig = NULL;
db_stmt_done(stmt);
return true;
}
/* the case left over is both sigs exist */
*remote_ann_node_sig = tal(ctx, secp256k1_ecdsa_signature);
*remote_ann_bitcoin_sig = tal(ctx, secp256k1_ecdsa_signature);
if (!sqlite3_column_signature(stmt, 0, *remote_ann_node_sig))
goto fail;
if (!sqlite3_column_signature(stmt, 1, *remote_ann_bitcoin_sig))
goto fail;
db_stmt_done(stmt);
return true;
fail:
*remote_ann_node_sig = tal_free(*remote_ann_node_sig);
*remote_ann_bitcoin_sig = tal_free(*remote_ann_bitcoin_sig);
db_stmt_done(stmt);
return false;
}
/**
* wallet_stmt2channel - Helper to populate a wallet_channel from a sqlite3_stmt
*/
@ -951,6 +995,24 @@ u64 wallet_get_channel_dbid(struct wallet *wallet)
return ++wallet->max_channel_dbid;
}
/* When we receive the remote announcement message, we will also call this function */
void wallet_announcement_save(struct wallet *w, u64 id,
secp256k1_ecdsa_signature *remote_ann_node_sig,
secp256k1_ecdsa_signature *remote_ann_bitcoin_sig)
{
sqlite3_stmt *stmt;
stmt = db_prepare(w->db, "UPDATE channels SET"
" remote_ann_node_sig=?,"
" remote_ann_bitcoin_sig=?"
" WHERE id=?");
sqlite3_bind_signature(stmt, 1, remote_ann_node_sig);
sqlite3_bind_signature(stmt, 2, remote_ann_bitcoin_sig);
sqlite3_bind_int64(stmt, 3, id);
db_exec_prepared(w->db, stmt);
}
void wallet_channel_save(struct wallet *w, struct channel *chan)
{
sqlite3_stmt *stmt;

28
wallet/wallet.h
View File

@ -555,6 +555,21 @@ bool wallet_htlcs_load_for_channel(struct wallet *wallet,
struct htlc_in_map *htlcs_in,
struct htlc_out_map *htlcs_out);
/**
* wallet_announcement_save - Save remote announcement information with channel.
*
* @wallet: wallet to load from
* @id: channel database id
* @remote_ann_node_sig: location to load remote_ann_node_sig to
* @remote_ann_bitcoin_sig: location to load remote_ann_bitcoin_sig to
*
* This function is only used to save REMOTE announcement information into DB
* when the channel has set the announce_channel bit and don't send the shutdown
* message(BOLT#7).
*/
void wallet_announcement_save(struct wallet *wallet, u64 id,
secp256k1_ecdsa_signature *remote_ann_node_sig,
secp256k1_ecdsa_signature *remote_ann_bitcoin_sig);
/* /!\ This is a DB ENUM, please do not change the numbering of any
* already defined elements (adding is ok) /!\ */
@ -1052,4 +1067,17 @@ struct amount_msat wallet_total_forward_fees(struct wallet *w);
*/
const struct forwarding *wallet_forwarded_payments_get(struct wallet *w,
const tal_t *ctx);
/**
* Load remote_ann_node_sig and remote_ann_bitcoin_sig
*
* @ctx: allocation context for the return value
* @w: wallet containing the channel
* @id: channel database id
* @remote_ann_node_sig: location to load remote_ann_node_sig to
* @remote_ann_bitcoin_sig: location to load remote_ann_bitcoin_sig to
*/
bool wallet_remote_ann_sigs_load(const tal_t *ctx, struct wallet *w, u64 id,
secp256k1_ecdsa_signature **remote_ann_node_sig,
secp256k1_ecdsa_signature **remote_ann_bitcoin_sig);
#endif /* LIGHTNING_WALLET_WALLET_H */