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wallet.c
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#include "config.h"
#include <bitcoin/script.h>
#include <ccan/array_size/array_size.h>
#include <ccan/cast/cast.h>
#include <ccan/mem/mem.h>
#include <ccan/tal/str/str.h>
#include <common/blockheight_states.h>
#include <common/fee_states.h>
#include <common/onionreply.h>
#include <common/type_to_string.h>
#include <db/bindings.h>
#include <db/common.h>
#include <db/exec.h>
#include <db/utils.h>
#include <lightningd/chaintopology.h>
#include <lightningd/channel.h>
#include <lightningd/coin_mvts.h>
#include <lightningd/notification.h>
#include <lightningd/peer_control.h>
#include <onchaind/onchaind_wiregen.h>
#include <wallet/invoices.h>
#include <wallet/txfilter.h>
#include <wallet/wallet.h>
#include <wally_bip32.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
/* 12 hours is usually enough reservation time */
#define RESERVATION_INC (6 * 12)
/* Possible channel state */
enum channel_state_bucket {
IN_OFFERED = 0,
IN_FULLFILLED = 1,
OUT_OFFERED = 2,
OUT_FULLFILLED = 3,
};
/* channel state identifier */
struct channel_state_param {
const char *dir_key;
const char *type_key;
const enum channel_state_bucket state;
};
/* Implement db_fatal, as a wrapper around fatal.
* We use a ifndef block so that it can get be
* implemented in a test file first, if necessary */
#ifndef DB_FATAL
#define DB_FATAL
void db_fatal(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
fatal_vfmt(fmt, ap);
va_end(ap);
}
#endif /* DB_FATAL */
static void outpointfilters_init(struct wallet *w)
{
struct db_stmt *stmt;
struct utxo **utxos = wallet_get_utxos(NULL, w, OUTPUT_STATE_ANY);
struct bitcoin_outpoint outpoint;
w->owned_outpoints = outpointfilter_new(w);
for (size_t i = 0; i < tal_count(utxos); i++)
outpointfilter_add(w->owned_outpoints, &utxos[i]->outpoint);
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_col_txid(stmt, "txid", &outpoint.txid);
outpoint.n = db_col_int(stmt, "outnum");
outpointfilter_add(w->utxoset_outpoints, &outpoint);
}
tal_free(stmt);
}
struct wallet *wallet_new(struct lightningd *ld, struct timers *timers,
struct ext_key *bip32_base STEALS)
{
struct wallet *wallet = tal(ld, struct wallet);
wallet->ld = ld;
wallet->log = new_log(wallet, ld->log_book, NULL, "wallet");
wallet->bip32_base = tal_steal(wallet, bip32_base);
wallet->keyscan_gap = 50;
list_head_init(&wallet->unstored_payments);
wallet->db = db_setup(wallet, ld, wallet->bip32_base);
db_begin_transaction(wallet->db);
wallet->invoices = invoices_new(wallet, wallet->db, timers);
outpointfilters_init(wallet);
db_commit_transaction(wallet->db);
return wallet;
}
/**
* wallet_add_utxo - Register an UTXO which we (partially) own
*
* Add an UTXO to the set of outputs we care about.
*
* This can fail if we've already seen UTXO.
*/
static 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->outpoint.txid);
db_bind_int(stmt, 1, utxo->outpoint.n);
db_query_prepared(stmt);
/* If we get a result, that means a clash. */
if (db_step(stmt)) {
db_col_ignore(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"
", option_anchor_outputs"
", confirmation_height"
", spend_height"
", scriptpubkey"
") VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?);"));
db_bind_txid(stmt, 0, &utxo->outpoint.txid);
db_bind_int(stmt, 1, utxo->outpoint.n);
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);
db_bind_int(stmt, 9, utxo->close_info->option_anchor_outputs);
} else {
db_bind_null(stmt, 6);
db_bind_null(stmt, 7);
db_bind_null(stmt, 8);
db_bind_null(stmt, 9);
}
if (utxo->blockheight) {
db_bind_int(stmt, 10, *utxo->blockheight);
} else
db_bind_null(stmt, 10);
if (utxo->spendheight)
db_bind_int(stmt, 11, *utxo->spendheight);
else
db_bind_null(stmt, 11);
db_bind_blob(stmt, 12, utxo->scriptPubkey,
tal_bytelen(utxo->scriptPubkey));
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_col_txid(stmt, "prev_out_tx", &utxo->outpoint.txid);
utxo->outpoint.n = db_col_int(stmt, "prev_out_index");
db_col_amount_sat(stmt, "value", &utxo->amount);
utxo->is_p2sh = db_col_int(stmt, "type") == p2sh_wpkh;
utxo->status = db_col_int(stmt, "status");
utxo->keyindex = db_col_int(stmt, "keyindex");
if (!db_col_is_null(stmt, "channel_id")) {
utxo->close_info = tal(utxo, struct unilateral_close_info);
utxo->close_info->channel_id = db_col_u64(stmt, "channel_id");
db_col_node_id(stmt, "peer_id", &utxo->close_info->peer_id);
if (!db_col_is_null(stmt, "commitment_point")) {
utxo->close_info->commitment_point
= tal(utxo->close_info, struct pubkey);
db_col_pubkey(stmt, "commitment_point",
utxo->close_info->commitment_point);
} else
utxo->close_info->commitment_point = NULL;
utxo->close_info->option_anchor_outputs
= db_col_int(stmt, "option_anchor_outputs");
utxo->close_info->csv = db_col_int(stmt, "csv_lock");
} else {
utxo->close_info = NULL;
db_col_ignore(stmt, "peer_id");
db_col_ignore(stmt, "commitment_point");
db_col_ignore(stmt, "option_anchor_outputs");
db_col_ignore(stmt, "csv_lock");
}
utxo->scriptPubkey = db_col_arr(utxo, stmt, "scriptpubkey", u8);
utxo->blockheight = NULL;
utxo->spendheight = NULL;
if (!db_col_is_null(stmt, "confirmation_height")) {
blockheight = tal(utxo, u32);
*blockheight = db_col_int(stmt, "confirmation_height");
utxo->blockheight = blockheight;
}
if (!db_col_is_null(stmt, "spend_height")) {
spendheight = tal(utxo, u32);
*spendheight = db_col_int(stmt, "spend_height");
utxo->spendheight = spendheight;
}
/* This column can be null if 0.9.1 db or below. */
utxo->reserved_til = db_col_int_or_default(stmt, "reserved_til", 0);
return utxo;
}
bool wallet_update_output_status(struct wallet *w,
const struct bitcoin_outpoint *outpoint,
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, &outpoint->txid);
db_bind_int(stmt, 3, outpoint->n);
} 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, &outpoint->txid);
db_bind_int(stmt, 2, outpoint->n);
}
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"
", option_anchor_outputs"
", confirmation_height"
", spend_height"
", scriptpubkey "
", reserved_til "
", csv_lock "
"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"
", option_anchor_outputs"
", confirmation_height"
", spend_height"
", scriptpubkey "
", reserved_til "
", csv_lock "
"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"
", option_anchor_outputs"
", confirmation_height"
", spend_height"
", scriptpubkey"
", reserved_til"
", csv_lock"
" 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_outpoint *outpoint)
{
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"
", option_anchor_outputs"
", confirmation_height"
", spend_height"
", scriptpubkey"
", reserved_til"
", csv_lock"
" FROM outputs"
" WHERE prev_out_tx = ?"
" AND prev_out_index = ?"));
db_bind_txid(stmt, 0, &outpoint->txid);
db_bind_int(stmt, 1, outpoint->n);
db_query_prepared(stmt);
if (!db_step(stmt)) {
tal_free(stmt);
return NULL;
}
utxo = wallet_stmt2output(ctx, stmt);
tal_free(stmt);
return utxo;
}
static void db_set_utxo(struct db *db, const struct utxo *utxo)
{
struct db_stmt *stmt;
if (utxo->status == OUTPUT_STATE_RESERVED)
assert(utxo->reserved_til);
else
assert(!utxo->reserved_til);
stmt = db_prepare_v2(
db, SQL("UPDATE outputs SET status=?, reserved_til=? "
"WHERE prev_out_tx=? AND prev_out_index=?"));
db_bind_int(stmt, 0, output_status_in_db(utxo->status));
db_bind_int(stmt, 1, utxo->reserved_til);
db_bind_txid(stmt, 2, &utxo->outpoint.txid);
db_bind_int(stmt, 3, utxo->outpoint.n);
db_exec_prepared_v2(take(stmt));
}
bool wallet_reserve_utxo(struct wallet *w, struct utxo *utxo,
u32 current_height,
u32 reserve)
{
switch (utxo->status) {
case OUTPUT_STATE_SPENT:
return false;
case OUTPUT_STATE_AVAILABLE:
case OUTPUT_STATE_RESERVED:
break;
case OUTPUT_STATE_ANY:
abort();
}
/* We simple increase existing reservations, which DTRT if we unreserve */
if (utxo->reserved_til >= current_height)
utxo->reserved_til += reserve;
else
utxo->reserved_til = current_height + reserve;
utxo->status = OUTPUT_STATE_RESERVED;
db_set_utxo(w->db, utxo);
return true;
}
void wallet_unreserve_utxo(struct wallet *w, struct utxo *utxo,
u32 current_height,
u32 unreserve)
{
if (utxo->status != OUTPUT_STATE_RESERVED)
fatal("UTXO %s is not reserved",
type_to_string(tmpctx, struct bitcoin_outpoint,
&utxo->outpoint));
if (utxo->reserved_til <= current_height + unreserve) {
utxo->status = OUTPUT_STATE_AVAILABLE;
utxo->reserved_til = 0;
} else
utxo->reserved_til -= unreserve;
db_set_utxo(w->db, utxo);
}
static bool excluded(const struct utxo **excludes,
const struct utxo *utxo)
{
for (size_t i = 0; i < tal_count(excludes); i++) {
if (bitcoin_outpoint_eq(&excludes[i]->outpoint, &utxo->outpoint))
return true;
}
return false;
}
static bool deep_enough(u32 maxheight, const struct utxo *utxo,
u32 current_blockheight)
{
if (utxo->close_info
&& utxo->close_info->option_anchor_outputs) {
/* All option_anchor_output close_infos
* have a csv of at least 1 */
if (!utxo->blockheight)
return false;
u32 csv_free = *utxo->blockheight + utxo->close_info->csv - 1;
assert(csv_free >= *utxo->blockheight);
if (csv_free > current_blockheight)
return false;
}
/* 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)
return true;
if (!utxo->blockheight)
return false;
return *utxo->blockheight <= maxheight;
}
/* FIXME: Make this wallet_find_utxos, and branch and bound and I've
* left that to @niftynei to do, who actually read the paper! */
struct utxo *wallet_find_utxo(const tal_t *ctx, struct wallet *w,
unsigned current_blockheight,
struct amount_sat *amount_hint,
unsigned feerate_per_kw,
u32 maxheight,
const struct utxo **excludes)
{
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"
", option_anchor_outputs"
", confirmation_height"
", spend_height"
", scriptpubkey "
", reserved_til"
", csv_lock"
" FROM outputs"
" WHERE status = ?"
" OR (status = ? AND reserved_til <= ?)"
"ORDER BY RANDOM();"));
db_bind_int(stmt, 0, output_status_in_db(OUTPUT_STATE_AVAILABLE));
db_bind_int(stmt, 1, output_status_in_db(OUTPUT_STATE_RESERVED));
db_bind_u64(stmt, 2, current_blockheight);
/* FIXME: Use feerate + estimate of input cost to establish
* range for amount_hint */
db_query_prepared(stmt);
utxo = NULL;
while (!utxo && db_step(stmt)) {
utxo = wallet_stmt2output(ctx, stmt);
if (excluded(excludes, utxo)
|| !deep_enough(maxheight, utxo, current_blockheight))
utxo = tal_free(utxo);
}
tal_free(stmt);
return utxo;
}
bool wallet_add_onchaind_utxo(struct wallet *w,
const struct bitcoin_outpoint *outpoint,
const u8 *scriptpubkey,
u32 blockheight,
struct amount_sat amount,
const struct channel *channel,
/* NULL if option_static_remotekey */
const struct pubkey *commitment_point,
u32 csv_lock)
{
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, &outpoint->txid);
db_bind_int(stmt, 1, outpoint->n);
db_query_prepared(stmt);
/* If we get a result, that means a clash. */
if (db_step(stmt)) {
db_col_ignore(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"
", option_anchor_outputs"
", confirmation_height"
", spend_height"
", scriptpubkey"
", csv_lock"
") VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?);"));
db_bind_txid(stmt, 0, &outpoint->txid);
db_bind_int(stmt, 1, outpoint->n);
db_bind_amount_sat(stmt, 2, &amount);
db_bind_int(stmt, 3, wallet_output_type_in_db(p2wpkh));
db_bind_int(stmt, 4, OUTPUT_STATE_AVAILABLE);
db_bind_int(stmt, 5, 0);
db_bind_u64(stmt, 6, channel->dbid);
db_bind_node_id(stmt, 7, &channel->peer->id);
if (commitment_point)
db_bind_pubkey(stmt, 8, commitment_point);
else
db_bind_null(stmt, 8);
db_bind_int(stmt, 9, channel_has(channel, OPT_ANCHOR_OUTPUTS));
db_bind_int(stmt, 10, blockheight);
/* spendheight */
db_bind_null(stmt, 11);
db_bind_blob(stmt, 12, scriptpubkey, tal_bytelen(scriptpubkey));
db_bind_int(stmt, 13, csv_lock);
db_exec_prepared_v2(take(stmt));
return true;
}
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;
}
static 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_col_u64(stmt, "min_index");
chain->chain.num_valid = db_col_u64(stmt, "num_valid");
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_col_int(stmt, "pos");
chain->chain.known[pos].index = db_col_u64(stmt, "idx");
db_col_sha256(stmt, "hash", &chain->chain.known[pos].hash);
}
tal_free(stmt);
return true;
}
static struct peer *wallet_peer_load(struct wallet *w, const u64 dbid)
{
const 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_col_is_null(stmt, "node_id")) {
db_col_ignore(stmt, "address");
db_col_ignore(stmt, "id");
goto done;
}
db_col_node_id(stmt, "node_id", &id);
/* This can happen for peers last seen on Torv2! */
addrstr = db_col_strdup(tmpctx, stmt, "address");
if (!parse_wireaddr_internal(addrstr, &addr, chainparams_get_ln_port(chainparams),
false, false, true, true, NULL)) {
log_unusual(w->log, "Unparsable peer address %s: replacing",
addrstr);
parse_wireaddr_internal("127.0.0.1:1", &addr, chainparams_get_ln_port(chainparams),
false, false, true, true, NULL);
}
/* FIXME: save incoming in db! */
peer = new_peer(w->ld, db_col_u64(stmt, "id"), &id, &addr, false);
done:
tal_free(stmt);
return peer;
}
static struct bitcoin_signature *
wallet_htlc_sigs_load(const tal_t *ctx, struct wallet *w, u64 channelid,
bool option_anchor_outputs)
{
struct db_stmt *stmt;
struct bitcoin_signature *htlc_sigs = tal_arr(ctx, struct bitcoin_signature, 0);
stmt = db_prepare_v2(
w->db, SQL("SELECT signature FROM htlc_sigs WHERE channelid = ?"));
db_bind_u64(stmt, 0, channelid);
db_query_prepared(stmt);
while (db_step(stmt)) {
struct bitcoin_signature sig;
db_col_signature(stmt, "signature", &sig.s);
/* BOLT #3:
* ## HTLC-Timeout and HTLC-Success Transactions
*...
* * if `option_anchors` applies to this commitment
* transaction, `SIGHASH_SINGLE|SIGHASH_ANYONECANPAY` is
* used as described in [BOLT #5]
*/
if (option_anchor_outputs)
sig.sighash_type = SIGHASH_SINGLE|SIGHASH_ANYONECANPAY;
else
sig.sighash_type = SIGHASH_ALL;
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_col_is_null(stmt, "remote_ann_node_sig")
|| db_col_is_null(stmt, "remote_ann_bitcoin_sig")) {
db_col_ignore(stmt, "remote_ann_bitcoin_sig");
*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_col_signature(stmt, "remote_ann_node_sig", *remote_ann_node_sig))
goto fail;
if (!db_col_signature(stmt, "remote_ann_bitcoin_sig", *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 = htlc_state_in_db(db_col_int(stmt, "hstate"));
u32 feerate = db_col_int(stmt, "feerate_per_kw");
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;
}
static struct height_states *wallet_channel_height_states_load(struct wallet *w,
const u64 id,
enum side opener)
{
struct height_states *states;
struct db_stmt *stmt;
stmt = db_prepare_v2(w->db, SQL("SELECT hstate, blockheight FROM channel_blockheights WHERE channel_id = ?"));
db_bind_u64(stmt, 0, id);
db_query_prepared(stmt);
/* Start with blank slate. */
states = new_height_states(w, opener, NULL);
while (db_step(stmt)) {
enum htlc_state hstate = htlc_state_in_db(db_col_int(stmt, "hstate"));
u32 blockheight = db_col_int(stmt, "blockheight");
if (states->height[hstate] != NULL) {
log_broken(w->log,
"duplicate channel_blockheights for %s id %"PRIu64,
htlc_state_name(hstate), id);
states = tal_free(states);
break;
}
states->height[hstate] = tal_dup(states, u32, &blockheight);
}
tal_free(stmt);