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wallet.c
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wallet.c
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#include "invoices.h"
#include "wallet.h"
#include <bitcoin/psbt.h>
#include <bitcoin/script.h>
#include <ccan/array_size/array_size.h>
#include <ccan/mem/mem.h>
#include <ccan/tal/str/str.h>
#include <common/fee_states.h>
#include <common/key_derive.h>
#include <common/memleak.h>
#include <common/onionreply.h>
#include <common/wireaddr.h>
#include <inttypes.h>
#include <lightningd/coin_mvts.h>
#include <lightningd/lightningd.h>
#include <lightningd/notification.h>
#include <lightningd/peer_control.h>
#include <lightningd/peer_htlcs.h>
#include <onchaind/gen_onchain_wire.h>
#include <string.h>
#include <wallet/db_common.h>
#define SQLITE_MAX_UINT 0x7FFFFFFFFFFFFFFF
#define DIRECTION_INCOMING 0
#define DIRECTION_OUTGOING 1
/* How many blocks must a UTXO entry be buried under to be considered old enough
* to prune? */
#define UTXO_PRUNE_DEPTH 144
static void outpointfilters_init(struct wallet *w)
{
struct db_stmt *stmt;
struct utxo **utxos = wallet_get_utxos(NULL, w, output_state_any);
struct bitcoin_txid txid;
u32 outnum;
w->owned_outpoints = outpointfilter_new(w);
for (size_t i = 0; i < tal_count(utxos); i++)
outpointfilter_add(w->owned_outpoints, &utxos[i]->txid, utxos[i]->outnum);
tal_free(utxos);
w->utxoset_outpoints = outpointfilter_new(w);
stmt = db_prepare_v2(
w->db,
SQL("SELECT txid, outnum FROM utxoset WHERE spendheight is NULL"));
db_query_prepared(stmt);
while (db_step(stmt)) {
db_column_sha256d(stmt, 0, &txid.shad);
outnum = db_column_int(stmt, 1);
outpointfilter_add(w->utxoset_outpoints, &txid, outnum);
}
tal_free(stmt);
}
struct wallet *wallet_new(struct lightningd *ld, struct timers *timers)
{
struct wallet *wallet = tal(ld, struct wallet);
wallet->ld = ld;
wallet->db = db_setup(wallet, ld);
wallet->log = new_log(wallet, ld->log_book, NULL, "wallet");
wallet->bip32_base = NULL;
wallet->keyscan_gap = 50;
list_head_init(&wallet->unstored_payments);
list_head_init(&wallet->unreleased_txs);
db_begin_transaction(wallet->db);
wallet->invoices = invoices_new(wallet, wallet->db, timers);
outpointfilters_init(wallet);
db_commit_transaction(wallet->db);
return wallet;
}
/* This can fail if we've already seen UTXO. */
bool wallet_add_utxo(struct wallet *w, struct utxo *utxo,
enum wallet_output_type type)
{
struct db_stmt *stmt;
stmt = db_prepare_v2(w->db, SQL("SELECT * from outputs WHERE "
"prev_out_tx=? AND prev_out_index=?"));
db_bind_txid(stmt, 0, &utxo->txid);
db_bind_int(stmt, 1, utxo->outnum);
db_query_prepared(stmt);
/* If we get a result, that means a clash. */
if (db_step(stmt)) {
tal_free(stmt);
return false;
}
tal_free(stmt);
stmt = db_prepare_v2(
w->db, SQL("INSERT INTO outputs ("
" prev_out_tx"
", prev_out_index"
", value"
", type"
", status"
", keyindex"
", channel_id"
", peer_id"
", commitment_point"
", confirmation_height"
", spend_height"
", scriptpubkey"
") VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?);"));
db_bind_txid(stmt, 0, &utxo->txid);
db_bind_int(stmt, 1, utxo->outnum);
db_bind_amount_sat(stmt, 2, &utxo->amount);
db_bind_int(stmt, 3, wallet_output_type_in_db(type));
db_bind_int(stmt, 4, output_state_available);
db_bind_int(stmt, 5, utxo->keyindex);
if (utxo->close_info) {
db_bind_u64(stmt, 6, utxo->close_info->channel_id);
db_bind_node_id(stmt, 7, &utxo->close_info->peer_id);
if (utxo->close_info->commitment_point)
db_bind_pubkey(stmt, 8, utxo->close_info->commitment_point);
else
db_bind_null(stmt, 8);
} else {
db_bind_null(stmt, 6);
db_bind_null(stmt, 7);
db_bind_null(stmt, 8);
}
if (utxo->blockheight) {
db_bind_int(stmt, 9, *utxo->blockheight);
} else
db_bind_null(stmt, 9);
if (utxo->spendheight)
db_bind_int(stmt, 10, *utxo->spendheight);
else
db_bind_null(stmt, 10);
if (utxo->scriptPubkey)
db_bind_blob(stmt, 11, utxo->scriptPubkey,
tal_bytelen(utxo->scriptPubkey));
else
db_bind_null(stmt, 11);
db_exec_prepared_v2(take(stmt));
return true;
}
/**
* wallet_stmt2output - Extract data from stmt and fill an UTXO
*/
static struct utxo *wallet_stmt2output(const tal_t *ctx, struct db_stmt *stmt)
{
struct utxo *utxo = tal(ctx, struct utxo);
u32 *blockheight, *spendheight;
db_column_txid(stmt, 0, &utxo->txid);
utxo->outnum = db_column_int(stmt, 1);
db_column_amount_sat(stmt, 2, &utxo->amount);
utxo->is_p2sh = db_column_int(stmt, 3) == p2sh_wpkh;
utxo->status = db_column_int(stmt, 4);
utxo->keyindex = db_column_int(stmt, 5);
if (!db_column_is_null(stmt, 6)) {
utxo->close_info = tal(utxo, struct unilateral_close_info);
utxo->close_info->channel_id = db_column_u64(stmt, 6);
db_column_node_id(stmt, 7, &utxo->close_info->peer_id);
if (!db_column_is_null(stmt, 8)) {
utxo->close_info->commitment_point
= tal(utxo->close_info, struct pubkey);
db_column_pubkey(stmt, 8,
utxo->close_info->commitment_point);
} else
utxo->close_info->commitment_point = NULL;
} else {
utxo->close_info = NULL;
}
utxo->blockheight = NULL;
utxo->spendheight = NULL;
utxo->scriptPubkey = NULL;
utxo->scriptSig = NULL;
if (!db_column_is_null(stmt, 9)) {
blockheight = tal(utxo, u32);
*blockheight = db_column_int(stmt, 9);
utxo->blockheight = blockheight;
}
if (!db_column_is_null(stmt, 10)) {
spendheight = tal(utxo, u32);
*spendheight = db_column_int(stmt, 10);
utxo->spendheight = spendheight;
}
if (!db_column_is_null(stmt, 11)) {
utxo->scriptPubkey =
tal_dup_arr(utxo, u8, db_column_blob(stmt, 11),
db_column_bytes(stmt, 11), 0);
}
return utxo;
}
bool wallet_update_output_status(struct wallet *w,
const struct bitcoin_txid *txid,
const u32 outnum, enum output_status oldstatus,
enum output_status newstatus)
{
struct db_stmt *stmt;
size_t changes;
if (oldstatus != output_state_any) {
stmt = db_prepare_v2(
w->db, SQL("UPDATE outputs SET status=? WHERE status=? AND "
"prev_out_tx=? AND prev_out_index=?"));
db_bind_int(stmt, 0, output_status_in_db(newstatus));
db_bind_int(stmt, 1, output_status_in_db(oldstatus));
db_bind_txid(stmt, 2, txid);
db_bind_int(stmt, 3, outnum);
} else {
stmt = db_prepare_v2(w->db,
SQL("UPDATE outputs SET status=? WHERE "
"prev_out_tx=? AND prev_out_index=?"));
db_bind_int(stmt, 0, output_status_in_db(newstatus));
db_bind_txid(stmt, 1, txid);
db_bind_int(stmt, 2, outnum);
}
db_exec_prepared_v2(stmt);
changes = db_count_changes(stmt);
tal_free(stmt);
return changes > 0;
}
struct utxo **wallet_get_utxos(const tal_t *ctx, struct wallet *w, const enum output_status state)
{
struct utxo **results;
int i;
struct db_stmt *stmt;
if (state == output_state_any) {
stmt = db_prepare_v2(w->db, SQL("SELECT"
" prev_out_tx"
", prev_out_index"
", value"
", type"
", status"
", keyindex"
", channel_id"
", peer_id"
", commitment_point"
", confirmation_height"
", spend_height"
", scriptpubkey "
"FROM outputs"));
} else {
stmt = db_prepare_v2(w->db, SQL("SELECT"
" prev_out_tx"
", prev_out_index"
", value"
", type"
", status"
", keyindex"
", channel_id"
", peer_id"
", commitment_point"
", confirmation_height"
", spend_height"
", scriptpubkey "
"FROM outputs "
"WHERE status= ? "));
db_bind_int(stmt, 0, output_status_in_db(state));
}
db_query_prepared(stmt);
results = tal_arr(ctx, struct utxo*, 0);
for (i=0; db_step(stmt); i++) {
struct utxo *u = wallet_stmt2output(results, stmt);
tal_arr_expand(&results, u);
}
tal_free(stmt);
return results;
}
struct utxo **wallet_get_unconfirmed_closeinfo_utxos(const tal_t *ctx,
struct wallet *w)
{
struct db_stmt *stmt;
struct utxo **results;
int i;
stmt = db_prepare_v2(w->db, SQL("SELECT"
" prev_out_tx"
", prev_out_index"
", value"
", type"
", status"
", keyindex"
", channel_id"
", peer_id"
", commitment_point"
", confirmation_height"
", spend_height"
", scriptpubkey"
" FROM outputs"
" WHERE channel_id IS NOT NULL AND "
"confirmation_height IS NULL"));
db_query_prepared(stmt);
results = tal_arr(ctx, struct utxo *, 0);
for (i = 0; db_step(stmt); i++) {
struct utxo *u = wallet_stmt2output(results, stmt);
tal_arr_expand(&results, u);
}
tal_free(stmt);
return results;
}
struct utxo *wallet_utxo_get(const tal_t *ctx, struct wallet *w,
const struct bitcoin_txid *txid,
u32 outnum)
{
struct db_stmt *stmt;
struct utxo *utxo;
stmt = db_prepare_v2(w->db, SQL("SELECT"
" prev_out_tx"
", prev_out_index"
", value"
", type"
", status"
", keyindex"
", channel_id"
", peer_id"
", commitment_point"
", confirmation_height"
", spend_height"
", scriptpubkey"
" FROM outputs"
" WHERE prev_out_tx = ?"
" AND prev_out_index = ?"));
db_bind_sha256d(stmt, 0, &txid->shad);
db_bind_int(stmt, 1, outnum);
db_query_prepared(stmt);
if (!db_step(stmt)) {
tal_free(stmt);
return NULL;
}
utxo = wallet_stmt2output(ctx, stmt);
tal_free(stmt);
return utxo;
}
/**
* unreserve_utxo - Mark a reserved UTXO as available again
*/
static void unreserve_utxo(struct wallet *w, const struct utxo *unres)
{
if (!wallet_update_output_status(w, &unres->txid, unres->outnum,
output_state_reserved,
output_state_available)) {
fatal("Unable to unreserve output");
}
}
/**
* destroy_utxos - Destructor for an array of pointers to utxo
*/
static void destroy_utxos(const struct utxo **utxos, struct wallet *w)
{
for (size_t i = 0; i < tal_count(utxos); i++)
unreserve_utxo(w, utxos[i]);
}
void wallet_confirm_utxos(struct wallet *w, const struct utxo **utxos)
{
tal_del_destructor2(utxos, destroy_utxos, w);
for (size_t i = 0; i < tal_count(utxos); i++) {
if (!wallet_update_output_status(
w, &utxos[i]->txid, utxos[i]->outnum,
output_state_reserved, output_state_spent)) {
fatal("Unable to mark output as spent");
}
}
}
static const struct utxo **wallet_select(const tal_t *ctx, struct wallet *w,
struct amount_sat sat,
const u32 feerate_per_kw,
size_t outscriptlen,
bool may_have_change,
u32 maxheight,
struct amount_sat *satoshi_in,
struct amount_sat *fee_estimate)
{
size_t i = 0;
struct utxo **available;
u64 weight;
size_t num_outputs = may_have_change ? 2 : 1;
const struct utxo **utxos = tal_arr(ctx, const struct utxo *, 0);
tal_add_destructor2(utxos, destroy_utxos, w);
/* version, input count, output count, locktime */
weight = (4 + 1 + 1 + 4) * 4;
/* Add segwit fields: marker + flag */
weight += 1 + 1;
/* The main output: amount, len, scriptpubkey */
weight += (8 + 1 + outscriptlen) * 4;
/* Change output will be P2WPKH */
if (may_have_change)
weight += (8 + 1 + BITCOIN_SCRIPTPUBKEY_P2WPKH_LEN) * 4;
/* A couple of things need to change for elements: */
if (chainparams->is_elements) {
/* Each transaction has surjection and rangeproof (both empty
* for us as long as we use unblinded L-BTC transactions). */
weight += 2 * 4;
/* Each output additionally has an asset_tag (1 + 32), value
* is prefixed by a version (1 byte), an empty nonce (1
* byte), two empty proofs (2 bytes). */
weight += (32 + 1 + 1 + 1) * 4 * num_outputs;
/* An elements transaction has 1 additional output for fees */
weight += (8 + 1) * 4; /* Bitcoin style output */
weight += (32 + 1 + 1 + 1) * 4; /* Elements added fields */
}
*fee_estimate = AMOUNT_SAT(0);
*satoshi_in = AMOUNT_SAT(0);
available = wallet_get_utxos(ctx, w, output_state_available);
for (i = 0; i < tal_count(available); i++) {
size_t input_weight;
struct amount_sat needed;
struct utxo *u = tal_steal(utxos, available[i]);
/* If we require confirmations check that we have a
* confirmation height and that it is below the required
* maxheight (current_height - minconf) */
if (maxheight != 0 &&
(!u->blockheight || *u->blockheight > maxheight)) {
tal_free(u);
continue;
}
tal_arr_expand(&utxos, u);
if (!wallet_update_output_status(
w, &available[i]->txid, available[i]->outnum,
output_state_available, output_state_reserved))
fatal("Unable to reserve output");
/* Input weight: txid + index + sequence */
input_weight = (32 + 4 + 4) * 4;
/* We always encode the length of the script, even if empty */
input_weight += 1 * 4;
/* P2SH variants include push of <0 <20-byte-key-hash>> */
if (u->is_p2sh)
input_weight += 23 * 4;
/* Account for witness (1 byte count + sig + key) */
input_weight += 1 + (1 + 73 + 1 + 33);
/* Elements inputs have 6 bytes of blank proofs attached. */
if (chainparams->is_elements)
input_weight += 6;
weight += input_weight;
if (!amount_sat_add(satoshi_in, *satoshi_in, u->amount))
fatal("Overflow in available satoshis %zu/%zu %s + %s",
i, tal_count(available),
type_to_string(tmpctx, struct amount_sat,
satoshi_in),
type_to_string(tmpctx, struct amount_sat,
&u->amount));
*fee_estimate = amount_tx_fee(feerate_per_kw, weight);
if (!amount_sat_add(&needed, sat, *fee_estimate))
fatal("Overflow in fee estimate %zu/%zu %s + %s",
i, tal_count(available),
type_to_string(tmpctx, struct amount_sat, &sat),
type_to_string(tmpctx, struct amount_sat,
fee_estimate));
if (amount_sat_greater_eq(*satoshi_in, needed))
break;
}
tal_free(available);
return utxos;
}
const struct utxo **wallet_select_coins(const tal_t *ctx, struct wallet *w,
bool with_change,
struct amount_sat sat,
const u32 feerate_per_kw,
size_t outscriptlen,
u32 maxheight,
struct amount_sat *fee_estimate,
struct amount_sat *change)
{
struct amount_sat satoshi_in;
const struct utxo **utxo;
utxo = wallet_select(ctx, w, sat, feerate_per_kw,
outscriptlen, with_change, maxheight,
&satoshi_in, fee_estimate);
/* Couldn't afford it? */
if (!amount_sat_sub(change, satoshi_in, sat)
|| !amount_sat_sub(change, *change, *fee_estimate))
return tal_free(utxo);
if (!with_change)
*change = AMOUNT_SAT(0);
return utxo;
}
const struct utxo **wallet_select_specific(const tal_t *ctx, struct wallet *w,
struct bitcoin_txid **txids,
u32 **outnums)
{
size_t i, j;
struct utxo **available;
const struct utxo **utxos = tal_arr(ctx, const struct utxo*, 0);
tal_add_destructor2(utxos, destroy_utxos, w);
available = wallet_get_utxos(ctx, w, output_state_available);
for (i = 0; i < tal_count(txids); i++) {
for (j = 0; j < tal_count(available); j++) {
if (bitcoin_txid_eq(&available[j]->txid, txids[i])
&& available[j]->outnum == *outnums[i]) {
struct utxo *u = tal_steal(utxos, available[j]);
tal_arr_expand(&utxos, u);
if (!wallet_update_output_status(
w, &available[j]->txid, available[j]->outnum,
output_state_available, output_state_reserved))
fatal("Unable to reserve output");
}
}
}
tal_free(available);
return utxos;
}
const struct utxo **wallet_select_all(const tal_t *ctx, struct wallet *w,
const u32 feerate_per_kw,
size_t outscriptlen,
u32 maxheight,
struct amount_sat *value,
struct amount_sat *fee_estimate)
{
struct amount_sat satoshi_in;
const struct utxo **utxo;
/* Huge value, but won't overflow on addition */
utxo = wallet_select(ctx, w, AMOUNT_SAT(1ULL << 56), feerate_per_kw,
outscriptlen, false, maxheight,
&satoshi_in, fee_estimate);
/* Can't afford fees? */
if (!amount_sat_sub(value, satoshi_in, *fee_estimate))
return tal_free(utxo);
return utxo;
}
u8 *derive_redeem_scriptsig(const tal_t *ctx, struct wallet *w, u32 keyindex)
{
struct ext_key ext;
struct pubkey key;
if (bip32_key_from_parent(w->bip32_base, keyindex,
BIP32_FLAG_KEY_PUBLIC, &ext) != WALLY_OK) {
fatal("Unable to derive pubkey");
}
if (!pubkey_from_der(ext.pub_key, PUBKEY_CMPR_LEN, &key))
fatal("Unble to derive pubkey from DER");
return bitcoin_scriptsig_p2sh_p2wpkh(ctx, &key);
}
bool wallet_can_spend(struct wallet *w, const u8 *script,
u32 *index, bool *output_is_p2sh)
{
struct ext_key ext;
u64 bip32_max_index = db_get_intvar(w->db, "bip32_max_index", 0);
u32 i;
/* If not one of these, can't be for us. */
if (is_p2sh(script, NULL))
*output_is_p2sh = true;
else if (is_p2wpkh(script, NULL))
*output_is_p2sh = false;
else
return false;
for (i = 0; i <= bip32_max_index + w->keyscan_gap; i++) {
u8 *s;
if (bip32_key_from_parent(w->bip32_base, i,
BIP32_FLAG_KEY_PUBLIC, &ext)
!= WALLY_OK) {
abort();
}
s = scriptpubkey_p2wpkh_derkey(w, ext.pub_key);
if (*output_is_p2sh) {
u8 *p2sh = scriptpubkey_p2sh(w, s);
tal_free(s);
s = p2sh;
}
if (scripteq(s, script)) {
/* If we found a used key in the keyscan_gap we should
* remember that. */
if (i > bip32_max_index)
db_set_intvar(w->db, "bip32_max_index", i);
tal_free(s);
*index = i;
return true;
}
tal_free(s);
}
return false;
}
s64 wallet_get_newindex(struct lightningd *ld)
{
u64 newidx = db_get_intvar(ld->wallet->db, "bip32_max_index", 0) + 1;
if (newidx == BIP32_INITIAL_HARDENED_CHILD)
return -1;
db_set_intvar(ld->wallet->db, "bip32_max_index", newidx);
return newidx;
}
static void wallet_shachain_init(struct wallet *wallet,
struct wallet_shachain *chain)
{
struct db_stmt *stmt;
assert(chain->id == 0);
/* Create shachain */
shachain_init(&chain->chain);
stmt = db_prepare_v2(
wallet->db,
SQL("INSERT INTO shachains (min_index, num_valid) VALUES (?, 0);"));
db_bind_u64(stmt, 0, chain->chain.min_index);
db_exec_prepared_v2(stmt);
chain->id = db_last_insert_id_v2(stmt);
tal_free(stmt);
}
/* TODO(cdecker) Stolen from shachain, move to some appropriate location */
static unsigned int count_trailing_zeroes(uint64_t index)
{
#if HAVE_BUILTIN_CTZLL
return index ? (unsigned int)__builtin_ctzll(index) : SHACHAIN_BITS;
#else
unsigned int i;
for (i = 0; i < SHACHAIN_BITS; i++) {
if (index & (1ULL << i))
break;
}
return i;
#endif
}
bool wallet_shachain_add_hash(struct wallet *wallet,
struct wallet_shachain *chain,
uint64_t index,
const struct secret *hash)
{
struct db_stmt *stmt;
u32 pos = count_trailing_zeroes(index);
struct sha256 s;
bool updated;
BUILD_ASSERT(sizeof(s) == sizeof(*hash));
memcpy(&s, hash, sizeof(s));
assert(index < SQLITE_MAX_UINT);
if (!shachain_add_hash(&chain->chain, index, &s)) {
return false;
}
stmt = db_prepare_v2(
wallet->db,
SQL("UPDATE shachains SET num_valid=?, min_index=? WHERE id=?"));
db_bind_int(stmt, 0, chain->chain.num_valid);
db_bind_u64(stmt, 1, index);
db_bind_u64(stmt, 2, chain->id);
db_exec_prepared_v2(take(stmt));
stmt = db_prepare_v2(wallet->db,
SQL("UPDATE shachain_known SET idx=?, hash=? "
"WHERE shachain_id=? AND pos=?"));
db_bind_u64(stmt, 0, index);
db_bind_secret(stmt, 1, hash);
db_bind_u64(stmt, 2, chain->id);
db_bind_int(stmt, 3, pos);
db_exec_prepared_v2(stmt);
updated = db_count_changes(stmt) == 1;
tal_free(stmt);
if (!updated) {
stmt = db_prepare_v2(
wallet->db, SQL("INSERT INTO shachain_known (shachain_id, "
"pos, idx, hash) VALUES (?, ?, ?, ?);"));
db_bind_u64(stmt, 0, chain->id);
db_bind_int(stmt, 1, pos);
db_bind_u64(stmt, 2, index);
db_bind_secret(stmt, 3, hash);
db_exec_prepared_v2(take(stmt));
}
return true;
}
bool wallet_shachain_load(struct wallet *wallet, u64 id,
struct wallet_shachain *chain)
{
struct db_stmt *stmt;
chain->id = id;
shachain_init(&chain->chain);
/* Load shachain metadata */
stmt = db_prepare_v2(
wallet->db,
SQL("SELECT min_index, num_valid FROM shachains WHERE id=?"));
db_bind_u64(stmt, 0, id);
db_query_prepared(stmt);
if (!db_step(stmt)) {
tal_free(stmt);
return false;
}
chain->chain.min_index = db_column_u64(stmt, 0);
chain->chain.num_valid = db_column_u64(stmt, 1);
tal_free(stmt);
/* Load shachain known entries */
stmt = db_prepare_v2(wallet->db,
SQL("SELECT idx, hash, pos FROM shachain_known "
"WHERE shachain_id=?"));
db_bind_u64(stmt, 0, id);
db_query_prepared(stmt);
while (db_step(stmt)) {
int pos = db_column_int(stmt, 2);
chain->chain.known[pos].index = db_column_u64(stmt, 0);
db_column_sha256(stmt, 1, &chain->chain.known[pos].hash);
}
tal_free(stmt);
return true;
}
static struct peer *wallet_peer_load(struct wallet *w, const u64 dbid)
{
const unsigned char *addrstr;
struct peer *peer = NULL;
struct node_id id;
struct wireaddr_internal addr;
struct db_stmt *stmt;
stmt = db_prepare_v2(
w->db, SQL("SELECT id, node_id, address FROM peers WHERE id=?;"));
db_bind_u64(stmt, 0, dbid);
db_query_prepared(stmt);
if (!db_step(stmt))
goto done;
if (db_column_is_null(stmt, 1))
goto done;
db_column_node_id(stmt, 1, &id);
addrstr = db_column_text(stmt, 2);
if (!parse_wireaddr_internal((const char*)addrstr, &addr, DEFAULT_PORT, false, false, true, NULL))
goto done;
peer = new_peer(w->ld, db_column_u64(stmt, 0), &id, &addr);
done:
tal_free(stmt);
return peer;
}
static secp256k1_ecdsa_signature *
wallet_htlc_sigs_load(const tal_t *ctx, struct wallet *w, u64 channelid)
{
struct db_stmt *stmt;
stmt = db_prepare_v2(
w->db, SQL("SELECT signature FROM htlc_sigs WHERE channelid = ?"));
secp256k1_ecdsa_signature *htlc_sigs = tal_arr(ctx, secp256k1_ecdsa_signature, 0);
db_bind_u64(stmt, 0, channelid);
db_query_prepared(stmt);
while (db_step(stmt)) {
secp256k1_ecdsa_signature sig;
db_column_signature(stmt, 0, &sig);
tal_arr_expand(&htlc_sigs, sig);
}
tal_free(stmt);
log_debug(w->log, "Loaded %zu HTLC signatures from DB",
tal_count(htlc_sigs));
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)
{
struct db_stmt *stmt;
bool res;
stmt = db_prepare_v2(
w->db, SQL("SELECT remote_ann_node_sig, remote_ann_bitcoin_sig"
" FROM channels WHERE id = ?"));
db_bind_u64(stmt, 0, id);
db_query_prepared(stmt);
res = db_step(stmt);
/* This must succeed, since we know the channel exists */
assert(res);
/* if only one sig exists, forget the sig and hope peer send new ones*/
if (db_column_is_null(stmt, 0) || db_column_is_null(stmt, 1)) {
*remote_ann_node_sig = *remote_ann_bitcoin_sig = NULL;
tal_free(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 (!db_column_signature(stmt, 0, *remote_ann_node_sig))
goto fail;
if (!db_column_signature(stmt, 1, *remote_ann_bitcoin_sig))
goto fail;
tal_free(stmt);
return true;
fail:
*remote_ann_node_sig = tal_free(*remote_ann_node_sig);
*remote_ann_bitcoin_sig = tal_free(*remote_ann_bitcoin_sig);
tal_free(stmt);
return false;
}
static struct fee_states *wallet_channel_fee_states_load(struct wallet *w,
const u64 id,
enum side opener)
{
struct fee_states *fee_states;
struct db_stmt *stmt;
stmt = db_prepare_v2(w->db, SQL("SELECT hstate, feerate_per_kw FROM channel_feerates WHERE channel_id = ?"));
db_bind_u64(stmt, 0, id);
db_query_prepared(stmt);
/* Start with blank slate. */
fee_states = new_fee_states(w, opener, NULL);
while (db_step(stmt)) {
enum htlc_state hstate = db_column_int(stmt, 0);
u32 feerate = db_column_int(stmt, 1);
if (fee_states->feerate[hstate] != NULL) {
log_broken(w->log,
"duplicate channel_feerates for %s id %"PRIu64,
htlc_state_name(hstate), id);
fee_states = tal_free(fee_states);
break;
}
fee_states->feerate[hstate] = tal_dup(fee_states, u32, &feerate);
}
tal_free(stmt);
if (fee_states && !fee_states_valid(fee_states, opener)) {
log_broken(w->log,
"invalid channel_feerates for id %"PRIu64, id);
fee_states = tal_free(fee_states);
}
return fee_states;
}
/**
* wallet_stmt2channel - Helper to populate a wallet_channel from a `db_stmt`
*/
static struct channel *wallet_stmt2channel(struct wallet *w, struct db_stmt *stmt)
{
bool ok = true;
struct channel_info channel_info;
struct short_channel_id *scid;
struct channel *chan;
u64 peer_dbid;
struct peer *peer;
struct wallet_shachain wshachain;
struct channel_config our_config;
struct bitcoin_txid funding_txid;
struct bitcoin_signature last_sig;
u8 *remote_shutdown_scriptpubkey;
u8 *local_shutdown_scriptpubkey;
struct changed_htlc *last_sent_commit;
s64 final_key_idx, channel_config_id;
struct basepoints local_basepoints;
struct pubkey local_funding_pubkey;
struct pubkey *future_per_commitment_point;
struct amount_sat funding_sat, our_funding_sat;
struct amount_msat push_msat, our_msat, msat_to_us_min, msat_to_us_max;
peer_dbid = db_column_u64(stmt, 1);
peer = find_peer_by_dbid(w->ld, peer_dbid);
if (!peer) {
peer = wallet_peer_load(w, peer_dbid);
if (!peer) {
return NULL;
}
}
if (!db_column_is_null(stmt, 2)) {
scid = tal(tmpctx, struct short_channel_id);
if (!db_column_short_channel_id(stmt, 2, scid))
return NULL;
} else {
scid = NULL;
}
ok &= wallet_shachain_load(w, db_column_u64(stmt, 28), &wshachain);
remote_shutdown_scriptpubkey = db_column_arr(tmpctx, stmt, 29, u8);
local_shutdown_scriptpubkey = db_column_arr(tmpctx, stmt, 47, u8);
/* Do we have a last_sent_commit, if yes, populate */
if (!db_column_is_null(stmt, 42)) {
const u8 *cursor = db_column_blob(stmt, 42);
size_t len = db_column_bytes(stmt, 42);
size_t n = 0;
last_sent_commit = tal_arr(tmpctx, struct changed_htlc, n);
while (len) {
tal_resize(&last_sent_commit, n+1);
fromwire_changed_htlc(&cursor, &len,
&last_sent_commit[n++]);
}
} else
last_sent_commit = NULL;
#ifdef COMPAT_V060
if (!last_sent_commit && !db_column_is_null(stmt, 31)) {
last_sent_commit = tal(tmpctx, struct changed_htlc);
last_sent_commit->newstate = db_column_u64(stmt, 31);
last_sent_commit->id = db_column_u64(stmt, 32);
}
#endif
if (!db_column_is_null(stmt, 41)) {
future_per_commitment_point = tal(tmpctx, struct pubkey);
db_column_pubkey(stmt, 41, future_per_commitment_point);
} else
future_per_commitment_point = NULL;
channel_config_id = db_column_u64(stmt, 3);
ok &= wallet_channel_config_load(w, channel_config_id, &our_config);
db_column_sha256d(stmt, 12, &funding_txid.shad);
ok &= db_column_signature(stmt, 34, &last_sig.s);
last_sig.sighash_type = SIGHASH_ALL;
/* Populate channel_info */
db_column_pubkey(stmt, 19, &channel_info.remote_fundingkey);
db_column_pubkey(stmt, 20, &channel_info.theirbase.revocation);
db_column_pubkey(stmt, 21, &channel_info.theirbase.payment);
db_column_pubkey(stmt, 22, &channel_info.theirbase.htlc);
db_column_pubkey(stmt, 23, &channel_info.theirbase.delayed_payment);
db_column_pubkey(stmt, 24, &channel_info.remote_per_commit);