#include #include #include static bool print_superverbose; #define SUPERVERBOSE(...) \ do { if (print_superverbose) printf(__VA_ARGS__); } while(0) #define PRINT_ACTUAL_FEE #include "../commit_tx.c" #include #include #include #include #include #include #include #include #include /* Turn this on to brute-force fee values */ /*#define DEBUG */ /* AUTOGENERATED MOCKS START */ /* Generated stub for status_fmt */ void status_fmt(enum log_level level UNNEEDED, const char *fmt UNNEEDED, ...) { fprintf(stderr, "status_fmt called!\n"); abort(); } /* AUTOGENERATED MOCKS END */ /* bitcoind loves its backwards txids! */ static struct bitcoin_txid txid_from_hex(const char *hex) { struct bitcoin_txid txid; if (!bitcoin_txid_from_hex(hex, strlen(hex), &txid)) abort(); return txid; } static struct secret secret_from_hex(const char *hex) { struct secret s; size_t len; if (strstarts(hex, "0x")) hex += 2; len = strlen(hex); /* BOLT #3: * * - Private keys are displayed as 32 bytes plus a trailing 1 * (Bitcoin's convention for "compressed" private keys, i.e. keys * for which the public key is compressed). */ if (len == 66 && strends(hex, "01")) len -= 2; if (!hex_decode(hex, len, &s, sizeof(s))) abort(); return s; } static void tx_must_be_eq(const struct bitcoin_tx *a, const struct bitcoin_tx *b) { u8 *lina, *linb; size_t i; lina = linearize_tx(tmpctx, a); linb = linearize_tx(tmpctx, b); for (i = 0; i < tal_count(lina); i++) { if (i >= tal_count(linb)) errx(1, "Second tx is truncated:\n" "%s\n" "%s", tal_hex(tmpctx, lina), tal_hex(tmpctx, linb)); if (lina[i] != linb[i]) errx(1, "tx differ at offset %zu:\n" "%s\n" "%s", i, tal_hex(tmpctx, lina), tal_hex(tmpctx, linb)); } if (i != tal_count(linb)) errx(1, "First tx is truncated:\n" "%s\n" "%s", tal_hex(tmpctx, lina), tal_hex(tmpctx, linb)); } /* BOLT #3: * * htlc 0 direction: remote->local * htlc 0 amount_msat: 1000000 * htlc 0 expiry: 500 * htlc 0 payment_preimage: 0000000000000000000000000000000000000000000000000000000000000000 * htlc 1 direction: remote->local * htlc 1 amount_msat: 2000000 * htlc 1 expiry: 501 * htlc 1 payment_preimage: 0101010101010101010101010101010101010101010101010101010101010101 * htlc 2 direction: local->remote * htlc 2 amount_msat: 2000000 * htlc 2 expiry: 502 * htlc 2 payment_preimage: 0202020202020202020202020202020202020202020202020202020202020202 * htlc 3 direction: local->remote * htlc 3 amount_msat: 3000000 * htlc 3 expiry: 503 * htlc 3 payment_preimage: 0303030303030303030303030303030303030303030303030303030303030303 * htlc 4 direction: remote->local * htlc 4 amount_msat: 4000000 * htlc 4 expiry: 504 * htlc 4 payment_preimage: 0404040404040404040404040404040404040404040404040404040404040404 */ static const struct htlc **setup_htlcs(const tal_t *ctx) { const struct htlc **htlcs = tal_arr(ctx, const struct htlc *, 5); int i; for (i = 0; i < 5; i++) { struct htlc *htlc = tal(htlcs, struct htlc); htlc->id = i; switch (i) { case 0: htlc->state = RCVD_ADD_ACK_REVOCATION; htlc->msatoshi = 1000000; break; case 1: htlc->state = RCVD_ADD_ACK_REVOCATION; htlc->msatoshi = 2000000; break; case 2: htlc->state = SENT_ADD_ACK_REVOCATION; htlc->msatoshi = 2000000; break; case 3: htlc->state = SENT_ADD_ACK_REVOCATION; htlc->msatoshi = 3000000; break; case 4: htlc->state = RCVD_ADD_ACK_REVOCATION; htlc->msatoshi = 4000000; break; } if (i == 0 || i == 1 || i == 4) { /* direction: remote->local */ } else { /* direction: local->remote */ htlc->state = SENT_ADD_ACK_REVOCATION; } htlc->expiry.locktime = 500 + i; htlc->r = tal(htlc, struct preimage); memset(htlc->r, i, sizeof(*htlc->r)); sha256(&htlc->rhash, htlc->r, sizeof(*htlc->r)); htlcs[i] = htlc; } return htlcs; } #if 0 static struct pubkey pubkey_from_hex(const char *hex) { struct pubkey pubkey; if (strstarts(hex, "0x")) hex += 2; if (!pubkey_from_hexstr(hex, strlen(hex), &pubkey)) abort(); return pubkey; } #endif static void report_htlcs(const struct bitcoin_tx *tx, const struct htlc **htlc_map, u16 to_self_delay, const struct privkey *local_htlcsecretkey, const struct pubkey *localkey, const struct pubkey *local_htlckey, const struct pubkey *local_delayedkey, const struct privkey *x_remote_htlcsecretkey, const struct pubkey *remotekey, const struct pubkey *remote_htlckey, const struct pubkey *remote_revocation_key, u32 feerate_per_kw) { size_t i, n; struct bitcoin_txid txid; struct bitcoin_tx **htlc_tx; struct bitcoin_signature *remotehtlcsig; struct keyset keyset; u8 **wscript; htlc_tx = tal_arrz(tmpctx, struct bitcoin_tx *, tal_count(htlc_map)); remotehtlcsig = tal_arr(tmpctx, struct bitcoin_signature, tal_count(htlc_map)); wscript = tal_arr(tmpctx, u8 *, tal_count(htlc_map)); bitcoin_txid(tx, &txid); /* First report remote signatures, in order we would receive them. */ n = 0; for (i = 0; i < tal_count(htlc_map); i++) n += (htlc_map[i] != NULL); printf("num_htlcs: %zu\n", n); /* FIXME: naming here is kind of backwards: local revocation key * is derived from remote revocation basepoint, but it's local */ keyset.self_revocation_key = *remote_revocation_key; keyset.self_delayed_payment_key = *local_delayedkey; keyset.self_payment_key = *localkey; keyset.other_payment_key = *remotekey; keyset.self_htlc_key = *local_htlckey; keyset.other_htlc_key = *remote_htlckey; for (i = 0; i < tal_count(htlc_map); i++) { const struct htlc *htlc = htlc_map[i]; struct amount_msat htlc_amount; if (!htlc) continue; htlc_amount.millisatoshis = htlc->msatoshi; if (htlc_owner(htlc) == LOCAL) { htlc_tx[i] = htlc_timeout_tx(htlc_tx, &txid, i, htlc_amount, htlc->expiry.locktime, to_self_delay, feerate_per_kw, &keyset); wscript[i] = bitcoin_wscript_htlc_offer(tmpctx, local_htlckey, remote_htlckey, &htlc->rhash, remote_revocation_key); } else { htlc_tx[i] = htlc_success_tx(htlc_tx, &txid, i, htlc_amount, to_self_delay, feerate_per_kw, &keyset); wscript[i] = bitcoin_wscript_htlc_receive(tmpctx, &htlc->expiry, local_htlckey, remote_htlckey, &htlc->rhash, remote_revocation_key); } sign_tx_input(htlc_tx[i], 0, NULL, wscript[i], x_remote_htlcsecretkey, remote_htlckey, SIGHASH_ALL, &remotehtlcsig[i]); printf("# signature for output %zi (htlc %"PRIu64")\n", i, htlc->id); printf("remote_htlc_signature = %s\n", type_to_string(tmpctx, struct bitcoin_signature, &remotehtlcsig[i])); } /* For any HTLC outputs, produce htlc_tx */ for (i = 0; i < tal_count(htlc_map); i++) { struct bitcoin_signature localhtlcsig; const struct htlc *htlc = htlc_map[i]; if (!htlc) continue; sign_tx_input(htlc_tx[i], 0, NULL, wscript[i], local_htlcsecretkey, local_htlckey, SIGHASH_ALL, &localhtlcsig); printf("# local_signature = %s\n", type_to_string(tmpctx, struct bitcoin_signature, &localhtlcsig)); if (htlc_owner(htlc) == LOCAL) { htlc_timeout_tx_add_witness(htlc_tx[i], local_htlckey, remote_htlckey, &htlc->rhash, remote_revocation_key, &localhtlcsig, &remotehtlcsig[i]); } else { htlc_success_tx_add_witness(htlc_tx[i], &htlc->expiry, local_htlckey, remote_htlckey, &localhtlcsig, &remotehtlcsig[i], htlc->r, remote_revocation_key); } printf("output htlc_%s_tx %"PRIu64": %s\n", htlc_owner(htlc) == LOCAL ? "timeout" : "success", htlc->id, tal_hex(tmpctx, linearize_tx(tmpctx, htlc_tx[i]))); } } static void report(struct bitcoin_tx *tx, const u8 *wscript, const struct privkey *x_remote_funding_privkey, const struct pubkey *remote_funding_pubkey, const struct privkey *local_funding_privkey, const struct pubkey *local_funding_pubkey, u16 to_self_delay, const struct privkey *local_htlcsecretkey, const struct pubkey *localkey, const struct pubkey *local_htlckey, const struct pubkey *local_delayedkey, const struct privkey *x_remote_htlcsecretkey, const struct pubkey *remotekey, const struct pubkey *remote_htlckey, const struct pubkey *remote_revocation_key, u32 feerate_per_kw, const struct htlc **htlc_map) { char *txhex; struct bitcoin_signature localsig, remotesig; sign_tx_input(tx, 0, NULL, wscript, x_remote_funding_privkey, remote_funding_pubkey, SIGHASH_ALL, &remotesig); printf("remote_signature = %s\n", type_to_string(tmpctx, struct bitcoin_signature, &remotesig)); sign_tx_input(tx, 0, NULL, wscript, local_funding_privkey, local_funding_pubkey, SIGHASH_ALL, &localsig); printf("# local_signature = %s\n", type_to_string(tmpctx, struct bitcoin_signature, &localsig)); tx->input[0].witness = bitcoin_witness_2of2(tx->input, &localsig, &remotesig, local_funding_pubkey, remote_funding_pubkey); txhex = tal_hex(tmpctx, linearize_tx(tx, tx)); printf("output commit_tx: %s\n", txhex); report_htlcs(tx, htlc_map, to_self_delay, local_htlcsecretkey, localkey, local_htlckey, local_delayedkey, x_remote_htlcsecretkey, remotekey, remote_htlckey, remote_revocation_key, feerate_per_kw); } #ifdef DEBUG static struct amount_sat calc_fee(const struct bitcoin_tx *tx, struct amount_sat input) { size_t i; struct amount_sat output = AMOUNT_SAT(0), fee; for (i = 0; i < tal_count(tx->output); i++) output.satoshis += tx->output[i].amount; if (!amount_sub_sat(&fee, input, output)) abort(); return fee; } /* For debugging, we do brute-force increase to find thresholds */ static u32 increase(u32 feerate_per_kw) { return feerate_per_kw + 1; } #else static u64 increase(u32 feerate_per_kw) { /* BOLT #3: * * local_feerate_per_kw: 0 * ... * local_feerate_per_kw: 648 * ... * local_feerate_per_kw: 2070 * ... * local_feerate_per_kw: 2195 * ... * local_feerate_per_kw: 3703 * ... * local_feerate_per_kw: 4915 * ... * local_feerate_per_kw: 9651181 */ const u64 rates[] = { 0, 648, 2070, 2195, 3703, 4915, 9651181 }; size_t i; for (i = 0; i < ARRAY_SIZE(rates) - 1; i++) if (rates[i] == feerate_per_kw) return rates[i+1]; abort(); } #endif /* HTLCs as seen from other side. */ static const struct htlc **invert_htlcs(const struct htlc **htlcs) { size_t i, n = tal_count(htlcs); const struct htlc **inv = tal_arr(htlcs, const struct htlc *, n); for (i = 0; i < n; i++) { struct htlc *htlc; inv[i] = htlc = tal_dup(inv, struct htlc, htlcs[i]); if (inv[i]->state == RCVD_ADD_ACK_REVOCATION) htlc->state = SENT_ADD_ACK_REVOCATION; else { assert(inv[i]->state == SENT_ADD_ACK_REVOCATION); htlc->state = RCVD_ADD_ACK_REVOCATION; } } return inv; } int main(void) { setup_locale(); struct bitcoin_txid funding_txid; struct amount_sat funding_amount, dust_limit; u32 feerate_per_kw; u16 to_self_delay; /* x_ prefix means internal vars we used to derive spec */ struct privkey local_funding_privkey, x_remote_funding_privkey; struct secret x_local_payment_basepoint_secret, x_remote_payment_basepoint_secret; struct secret x_local_htlc_basepoint_secret, x_remote_htlc_basepoint_secret; struct secret x_local_per_commitment_secret; struct secret x_local_delayed_payment_basepoint_secret; struct secret x_remote_revocation_basepoint_secret; struct privkey local_htlcsecretkey, x_remote_htlcsecretkey; struct privkey x_local_delayed_secretkey; struct pubkey local_funding_pubkey, remote_funding_pubkey; struct pubkey local_payment_basepoint, remote_payment_basepoint; struct pubkey local_htlc_basepoint, remote_htlc_basepoint; struct pubkey x_local_delayed_payment_basepoint; struct pubkey x_remote_revocation_basepoint; struct pubkey x_local_per_commitment_point; struct pubkey localkey, remotekey, tmpkey; struct pubkey local_htlckey, remote_htlckey; struct pubkey local_delayedkey; struct pubkey remote_revocation_key; struct bitcoin_tx *tx, *tx2; struct keyset keyset; u8 *wscript; unsigned int funding_output_index; u64 commitment_number, cn_obscurer; struct amount_msat to_local, to_remote; const struct htlc **htlcs, **htlc_map, **htlc_map2, **inv_htlcs; secp256k1_ctx = secp256k1_context_create(SECP256K1_CONTEXT_VERIFY | SECP256K1_CONTEXT_SIGN); setup_tmpctx(); htlcs = setup_htlcs(tmpctx); inv_htlcs = invert_htlcs(htlcs); /* BOLT #3: * * # Appendix C: Commitment and HTLC Transaction Test Vectors * * In the following: * - *local* transactions are considered, which implies that all * payments to *local* are delayed. * - It's assumed that *local* is the funder. * - Private keys are displayed as 32 bytes plus a trailing 1 * (Bitcoin's convention for "compressed" private keys, i.e. keys for * which the public key is compressed). * - Transaction signatures are all deterministic, using RFC6979 (using * HMAC-SHA256). * * To start, common basic parameters for each test vector are defined: * the HTLCs are not used for the first "simple commitment tx with no * HTLCs" test. * * funding_tx_id: 8984484a580b825b9972d7adb15050b3ab624ccd731946b3eeddb92f4e7ef6be * funding_output_index: 0 * funding_amount_satoshi: 10000000 * commitment_number: 42 * local_delay: 144 * local_dust_limit_satoshi: 546 */ funding_txid = txid_from_hex("8984484a580b825b9972d7adb15050b3ab624ccd731946b3eeddb92f4e7ef6be"); funding_output_index = 0; funding_amount.satoshis = 10000000; commitment_number = 42; to_self_delay = 144; dust_limit.satoshis = 546; #ifdef DEBUG print_superverbose = true; #endif /* BOLT #3: * * */ local_funding_privkey.secret = secret_from_hex("30ff4956bbdd3222d44cc5e8a1261dab1e07957bdac5ae88fe3261ef321f374901"); x_remote_funding_privkey.secret = secret_from_hex("1552dfba4f6cf29a62a0af13c8d6981d36d0ef8d61ba10fb0fe90da7634d7e1301"); SUPERVERBOSE("INTERNAL: remote_funding_privkey: %s01\n", type_to_string(tmpctx, struct privkey, &x_remote_funding_privkey)); x_local_payment_basepoint_secret = secret_from_hex("1111111111111111111111111111111111111111111111111111111111111111"); SUPERVERBOSE("INTERNAL: local_payment_basepoint_secret: %s\n", type_to_string(tmpctx, struct secret, &x_local_payment_basepoint_secret)); x_remote_revocation_basepoint_secret = secret_from_hex("2222222222222222222222222222222222222222222222222222222222222222"); SUPERVERBOSE("INTERNAL: remote_revocation_basepoint_secret: %s\n", type_to_string(tmpctx, struct secret, &x_remote_revocation_basepoint_secret)); x_local_delayed_payment_basepoint_secret = secret_from_hex("3333333333333333333333333333333333333333333333333333333333333333"); SUPERVERBOSE("INTERNAL: local_delayed_payment_basepoint_secret: %s\n", type_to_string(tmpctx, struct secret, &x_local_delayed_payment_basepoint_secret)); x_remote_payment_basepoint_secret = secret_from_hex("4444444444444444444444444444444444444444444444444444444444444444"); SUPERVERBOSE("INTERNAL: remote_payment_basepoint_secret: %s\n", type_to_string(tmpctx, struct secret, &x_remote_payment_basepoint_secret)); x_local_per_commitment_secret = secret_from_hex("0x1f1e1d1c1b1a191817161514131211100f0e0d0c0b0a09080706050403020100"); SUPERVERBOSE("x_local_per_commitment_secret: %s\n", type_to_string(tmpctx, struct secret, &x_local_per_commitment_secret)); if (!pubkey_from_secret(&x_remote_revocation_basepoint_secret, &x_remote_revocation_basepoint)) abort(); SUPERVERBOSE("# From remote_revocation_basepoint_secret\n" "INTERNAL: remote_revocation_basepoint: %s\n", type_to_string(tmpctx, struct pubkey, &x_remote_revocation_basepoint)); if (!pubkey_from_secret(&x_local_delayed_payment_basepoint_secret, &x_local_delayed_payment_basepoint)) abort(); SUPERVERBOSE("# From local_delayed_payment_basepoint_secret\n" "INTERNAL: local_delayed_payment_basepoint: %s\n", type_to_string(tmpctx, struct pubkey, &x_local_delayed_payment_basepoint)); if (!pubkey_from_secret(&x_local_per_commitment_secret, &x_local_per_commitment_point)) abort(); SUPERVERBOSE("INTERNAL: local_per_commitment_point: %s\n", type_to_string(tmpctx, struct pubkey, &x_local_per_commitment_point)); if (!pubkey_from_secret(&x_local_payment_basepoint_secret, &local_payment_basepoint)) abort(); if (!pubkey_from_secret(&x_remote_payment_basepoint_secret, &remote_payment_basepoint)) abort(); /* FIXME: BOLT should include separate HTLC keys */ local_htlc_basepoint = local_payment_basepoint; remote_htlc_basepoint = remote_payment_basepoint; x_local_htlc_basepoint_secret = x_local_payment_basepoint_secret; x_remote_htlc_basepoint_secret = x_remote_payment_basepoint_secret; if (!derive_simple_privkey(&x_remote_htlc_basepoint_secret, &remote_htlc_basepoint, &x_local_per_commitment_point, &x_remote_htlcsecretkey)) abort(); SUPERVERBOSE("INTERNAL: remote_secretkey: %s\n", type_to_string(tmpctx, struct privkey, &x_remote_htlcsecretkey)); if (!derive_simple_privkey(&x_local_delayed_payment_basepoint_secret, &x_local_delayed_payment_basepoint, &x_local_per_commitment_point, &x_local_delayed_secretkey)) abort(); SUPERVERBOSE("# From local_delayed_payment_basepoint_secret, local_per_commitment_point and local_delayed_payment_basepoint\n" "INTERNAL: local_delayed_secretkey: %s\n", type_to_string(tmpctx, struct privkey, &x_local_delayed_secretkey)); /* These two needed to calculate obscuring factor */ printf("local_payment_basepoint: %s\n", type_to_string(tmpctx, struct pubkey, &local_payment_basepoint)); printf("remote_payment_basepoint: %s\n", type_to_string(tmpctx, struct pubkey,&remote_payment_basepoint)); cn_obscurer = commit_number_obscurer(&local_payment_basepoint, &remote_payment_basepoint); printf("# obscured commitment transaction number = 0x%"PRIx64" ^ %"PRIu64"\n", cn_obscurer, commitment_number); printf("local_funding_privkey: %s01\n", type_to_string(tmpctx, struct privkey, &local_funding_privkey)); if (!pubkey_from_privkey(&local_funding_privkey, &local_funding_pubkey)) abort(); printf("local_funding_pubkey: %s\n", type_to_string(tmpctx, struct pubkey, &local_funding_pubkey)); if (!pubkey_from_privkey(&x_remote_funding_privkey, &remote_funding_pubkey)) abort(); printf("remote_funding_pubkey: %s\n", type_to_string(tmpctx, struct pubkey, &remote_funding_pubkey)); if (!derive_simple_privkey(&x_local_htlc_basepoint_secret, &local_payment_basepoint, &x_local_per_commitment_point, &local_htlcsecretkey)) abort(); printf("local_secretkey: %s\n", type_to_string(tmpctx, struct privkey, &local_htlcsecretkey)); if (!derive_simple_key(&local_payment_basepoint, &x_local_per_commitment_point, &localkey)) abort(); printf("localkey: %s\n", type_to_string(tmpctx, struct pubkey, &localkey)); if (!derive_simple_key(&remote_payment_basepoint, &x_local_per_commitment_point, &remotekey)) abort(); printf("remotekey: %s\n", type_to_string(tmpctx, struct pubkey, &remotekey)); if (!pubkey_from_privkey(&local_htlcsecretkey, &local_htlckey)) abort(); if (!derive_simple_key(&local_htlc_basepoint, &x_local_per_commitment_point, &tmpkey)) abort(); assert(pubkey_eq(&tmpkey, &local_htlckey)); printf("local_htlckey: %s\n", type_to_string(tmpctx, struct pubkey, &local_htlckey)); if (!derive_simple_key(&remote_htlc_basepoint, &x_local_per_commitment_point, &remote_htlckey)) abort(); printf("remote_htlckey: %s\n", type_to_string(tmpctx, struct pubkey, &remote_htlckey)); if (!pubkey_from_privkey(&x_local_delayed_secretkey, &local_delayedkey)) abort(); if (!derive_simple_key(&x_local_delayed_payment_basepoint, &x_local_per_commitment_point, &tmpkey)) abort(); assert(pubkey_eq(&tmpkey, &local_delayedkey)); printf("local_delayedkey: %s\n", type_to_string(tmpctx, struct pubkey, &local_delayedkey)); if (!derive_revocation_key(&x_remote_revocation_basepoint, &x_local_per_commitment_point, &remote_revocation_key)) abort(); printf("remote_revocation_key: %s\n", type_to_string(tmpctx, struct pubkey, &remote_revocation_key)); wscript = bitcoin_redeem_2of2(tmpctx, &local_funding_pubkey, &remote_funding_pubkey); printf("# funding wscript = %s\n", tal_hex(tmpctx, wscript)); /* BOLT #3: * * name: simple commitment tx with no HTLCs * to_local_msat: 7000000000 * to_remote_msat: 3000000000 * local_feerate_per_kw: 15000 */ to_local.millisatoshis = 7000000000; to_remote.millisatoshis = 3000000000; feerate_per_kw = 15000; printf("\n" "name: simple commitment tx with no HTLCs\n" "to_local_msat: %"PRIu64"\n" "to_remote_msat: %"PRIu64"\n" "local_feerate_per_kw: %u\n", to_local.millisatoshis, to_remote.millisatoshis, feerate_per_kw); keyset.self_revocation_key = remote_revocation_key; keyset.self_delayed_payment_key = local_delayedkey; keyset.self_payment_key = localkey; keyset.other_payment_key = remotekey; keyset.self_htlc_key = local_htlckey; keyset.other_htlc_key = remote_htlckey; print_superverbose = true; tx = commit_tx(tmpctx, &funding_txid, funding_output_index, funding_amount, LOCAL, to_self_delay, &keyset, feerate_per_kw, dust_limit, to_local, to_remote, NULL, &htlc_map, commitment_number ^ cn_obscurer, LOCAL); print_superverbose = false; tx2 = commit_tx(tmpctx, &funding_txid, funding_output_index, funding_amount, REMOTE, to_self_delay, &keyset, feerate_per_kw, dust_limit, to_local, to_remote, NULL, &htlc_map2, commitment_number ^ cn_obscurer, REMOTE); tx_must_be_eq(tx, tx2); report(tx, wscript, &x_remote_funding_privkey, &remote_funding_pubkey, &local_funding_privkey, &local_funding_pubkey, to_self_delay, &local_htlcsecretkey, &localkey, &local_htlckey, &local_delayedkey, &x_remote_htlcsecretkey, &remotekey, &remote_htlckey, &remote_revocation_key, feerate_per_kw, htlc_map); /* BOLT #3: * * name: commitment tx with all five HTLCs untrimmed (minimum feerate) * to_local_msat: 6988000000 * to_remote_msat: 3000000000 * local_feerate_per_kw: 0 */ to_local.millisatoshis = 6988000000; to_remote.millisatoshis = 3000000000; feerate_per_kw = 0; printf("\n" "name: commitment tx with all 5 htlcs untrimmed (minimum feerate)\n" "to_local_msat: %"PRIu64"\n" "to_remote_msat: %"PRIu64"\n" "local_feerate_per_kw: %u\n", to_local.millisatoshis, to_remote.millisatoshis, feerate_per_kw); print_superverbose = true; tx = commit_tx(tmpctx, &funding_txid, funding_output_index, funding_amount, LOCAL, to_self_delay, &keyset, feerate_per_kw, dust_limit, to_local, to_remote, htlcs, &htlc_map, commitment_number ^ cn_obscurer, LOCAL); print_superverbose = false; tx2 = commit_tx(tmpctx, &funding_txid, funding_output_index, funding_amount, REMOTE, to_self_delay, &keyset, feerate_per_kw, dust_limit, to_local, to_remote, inv_htlcs, &htlc_map2, commitment_number ^ cn_obscurer, REMOTE); tx_must_be_eq(tx, tx2); report(tx, wscript, &x_remote_funding_privkey, &remote_funding_pubkey, &local_funding_privkey, &local_funding_pubkey, to_self_delay, &local_htlcsecretkey, &localkey, &local_htlckey, &local_delayedkey, &x_remote_htlcsecretkey, &remotekey, &remote_htlckey, &remote_revocation_key, feerate_per_kw, htlc_map); do { struct bitcoin_tx *newtx; feerate_per_kw = increase(feerate_per_kw); print_superverbose = false; newtx = commit_tx(tmpctx, &funding_txid, funding_output_index, funding_amount, LOCAL, to_self_delay, &keyset, feerate_per_kw, dust_limit, to_local, to_remote, htlcs, &htlc_map, commitment_number ^ cn_obscurer, LOCAL); /* This is what it would look like for peer generating it! */ tx2 = commit_tx(tmpctx, &funding_txid, funding_output_index, funding_amount, REMOTE, to_self_delay, &keyset, feerate_per_kw, dust_limit, to_local, to_remote, inv_htlcs, &htlc_map2, commitment_number ^ cn_obscurer, REMOTE); tx_must_be_eq(newtx, tx2); #ifdef DEBUG if (feerate_per_kw % 100000 == 0) printf("feerate_per_kw = %u, fees = %"PRIu64"\n", feerate_per_kw, calc_fee(newtx, funding_amount)); if (tal_count(newtx->output) == tal_count(tx->output)) { tal_free(newtx); continue; } #endif printf("\n" "name: commitment tx with %zu output%s untrimmed (maximum feerate)\n" "to_local_msat: %"PRIu64"\n" "to_remote_msat: %"PRIu64"\n" "local_feerate_per_kw: %u\n", tal_count(tx->output), tal_count(tx->output) > 1 ? "s" : "", to_local.millisatoshis, to_remote.millisatoshis, feerate_per_kw-1); /* Recalc with verbosity on */ print_superverbose = true; tx = commit_tx(tmpctx, &funding_txid, funding_output_index, funding_amount, LOCAL, to_self_delay, &keyset, feerate_per_kw-1, dust_limit, to_local, to_remote, htlcs, &htlc_map, commitment_number ^ cn_obscurer, LOCAL); report(tx, wscript, &x_remote_funding_privkey, &remote_funding_pubkey, &local_funding_privkey, &local_funding_pubkey, to_self_delay, &local_htlcsecretkey, &localkey, &local_htlckey, &local_delayedkey, &x_remote_htlcsecretkey, &remotekey, &remote_htlckey, &remote_revocation_key, feerate_per_kw-1, htlc_map); printf("\n" "name: commitment tx with %zu output%s untrimmed (minimum feerate)\n" "to_local_msat: %"PRIu64"\n" "to_remote_msat: %"PRIu64"\n" "local_feerate_per_kw: %u\n", tal_count(newtx->output), tal_count(newtx->output) > 1 ? "s" : "", to_local.millisatoshis, to_remote.millisatoshis, feerate_per_kw); /* Recalc with verbosity on */ print_superverbose = true; newtx = commit_tx(tmpctx, &funding_txid, funding_output_index, funding_amount, LOCAL, to_self_delay, &keyset, feerate_per_kw, dust_limit, to_local, to_remote, htlcs, &htlc_map, commitment_number ^ cn_obscurer, LOCAL); report(newtx, wscript, &x_remote_funding_privkey, &remote_funding_pubkey, &local_funding_privkey, &local_funding_pubkey, to_self_delay, &local_htlcsecretkey, &localkey, &local_htlckey, &local_delayedkey, &x_remote_htlcsecretkey, &remotekey, &remote_htlckey, &remote_revocation_key, feerate_per_kw, htlc_map); assert(tal_count(newtx->output) != tal_count(tx->output)); tal_free(tx); tx = newtx; } while (tal_count(tx->output) > 1); /* Now make sure we cover case where funder can't afford the fee; * its output cannot go negative! */ for (;;) { struct amount_sat base_fee = commit_tx_base_fee(feerate_per_kw, 0); if (amount_msat_greater_eq_sat(to_local, base_fee)) { feerate_per_kw++; continue; } /* BOLT #3: * * name: commitment tx with fee greater than funder amount * to_local_msat: 6988000000 * to_remote_msat: 3000000000 * local_feerate_per_kw: 9651936 */ assert(feerate_per_kw == 9651936); printf("\n" "name: commitment tx with fee greater than funder amount\n" "to_local_msat: %"PRIu64"\n" "to_remote_msat: %"PRIu64"\n" "local_feerate_per_kw: %u\n", to_local.millisatoshis, to_remote.millisatoshis, feerate_per_kw); tx = commit_tx(tmpctx, &funding_txid, funding_output_index, funding_amount, LOCAL, to_self_delay, &keyset, feerate_per_kw, dust_limit, to_local, to_remote, htlcs, &htlc_map, commitment_number ^ cn_obscurer, LOCAL); report(tx, wscript, &x_remote_funding_privkey, &remote_funding_pubkey, &local_funding_privkey, &local_funding_pubkey, to_self_delay, &local_htlcsecretkey, &localkey, &local_htlckey, &local_delayedkey, &x_remote_htlcsecretkey, &remotekey, &remote_htlckey, &remote_revocation_key, feerate_per_kw, htlc_map); break; } /* No memory leaks please */ secp256k1_context_destroy(secp256k1_ctx); tal_free(tmpctx); /* FIXME: Do BOLT comparison! */ return 0; }