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#include <bitcoin/address.h>
#include <bitcoin/base58.h>
#include <bitcoin/chainparams.h>
#include <bitcoin/feerate.h>
#include <bitcoin/psbt.h>
#include <bitcoin/script.h>
#include <ccan/crypto/sha256/sha256.h>
#include <ccan/json_escape/json_escape.h>
#include <ccan/str/hex/hex.h>
#include <ccan/tal/str/str.h>
#include <common/amount.h>
#include <common/bech32.h>
#include <common/channel_id.h>
#include <common/json_command.h>
#include <common/json_helpers.h>
#include <common/json_tok.h>
#include <common/jsonrpc_errors.h>
#include <common/param.h>
struct command_result *param_array(struct command *cmd, const char *name,
const char *buffer, const jsmntok_t *tok,
const jsmntok_t **arr)
{
if (tok->type == JSMN_ARRAY) {
*arr = tok;
return NULL;
}
return command_fail_badparam(cmd, name, buffer, tok, "should be an array");
}
struct command_result *param_bool(struct command *cmd, const char *name,
const char *buffer, const jsmntok_t *tok,
bool **b)
{
*b = tal(cmd, bool);
if (json_to_bool(buffer, tok, *b))
return NULL;
return command_fail_badparam(cmd, name, buffer, tok,
"should be 'true' or 'false'");
}
struct command_result *param_millionths(struct command *cmd, const char *name,
const char *buffer,
const jsmntok_t *tok, uint64_t **num)
{
*num = tal(cmd, uint64_t);
if (json_to_millionths(buffer, tok, *num))
return NULL;
return command_fail_badparam(cmd, name, buffer, tok,
"should be a non-negative floating-point number");
}
struct command_result *param_escaped_string(struct command *cmd,
const char *name,
const char * buffer,
const jsmntok_t *tok,
const char **str)
{
if (tok->type == JSMN_STRING) {
struct json_escape *esc;
/* jsmn always gives us ~ well-formed strings. */
esc = json_escape_string_(cmd, buffer + tok->start,
tok->end - tok->start);
*str = json_escape_unescape(cmd, esc);
if (*str)
return NULL;
}
return command_fail_badparam(cmd, name, buffer, tok,
"should be a string (without \\u)");
}
struct command_result *param_string(struct command *cmd, const char *name,
const char * buffer, const jsmntok_t *tok,
const char **str)
{
*str = tal_strndup(cmd, buffer + tok->start,
tok->end - tok->start);
return NULL;
}
struct command_result *param_ignore(struct command *cmd, const char *name,
const char *buffer, const jsmntok_t *tok,
const void *unused)
{
return NULL;
}
struct command_result *param_label(struct command *cmd, const char *name,
const char * buffer, const jsmntok_t *tok,
struct json_escape **label)
{
/* We accept both strings and number literals here. */
*label = json_escape_string_(cmd, buffer + tok->start, tok->end - tok->start);
if (*label && (tok->type == JSMN_STRING || json_tok_is_num(buffer, tok)))
return NULL;
return command_fail_badparam(cmd, name, buffer, tok,
"should be a string or number");
}
struct command_result *param_number(struct command *cmd, const char *name,
const char *buffer, const jsmntok_t *tok,
unsigned int **num)
{
*num = tal(cmd, unsigned int);
if (json_to_number(buffer, tok, *num))
return NULL;
return command_fail_badparam(cmd, name, buffer, tok,
"should be an integer");
}
struct command_result *param_sha256(struct command *cmd, const char *name,
const char *buffer, const jsmntok_t *tok,
struct sha256 **hash)
{
*hash = tal(cmd, struct sha256);
if (hex_decode(buffer + tok->start,
tok->end - tok->start,
*hash, sizeof(**hash)))
return NULL;
return command_fail_badparam(cmd, name, buffer, tok,
"should be a 32 byte hex value");
}
struct command_result *param_u64(struct command *cmd, const char *name,
const char *buffer, const jsmntok_t *tok,
uint64_t **num)
{
*num = tal(cmd, uint64_t);
if (json_to_u64(buffer, tok, *num))
return NULL;
return command_fail_badparam(cmd, name, buffer, tok,
"should be an unsigned 64 bit integer");
}
struct command_result *param_tok(struct command *cmd, const char *name,
const char *buffer, const jsmntok_t * tok,
const jsmntok_t **out)
{
*out = tok;
return NULL;
}
struct command_result *param_msat(struct command *cmd, const char *name,
const char *buffer, const jsmntok_t *tok,
struct amount_msat **msat)
{
*msat = tal(cmd, struct amount_msat);
if (parse_amount_msat(*msat, buffer + tok->start, tok->end - tok->start))
return NULL;
return command_fail_badparam(cmd, name, buffer, tok,
"should be a millisatoshi amount");
}
struct command_result *param_sat(struct command *cmd, const char *name,
const char *buffer, const jsmntok_t *tok,
struct amount_sat **sat)
{
*sat = tal(cmd, struct amount_sat);
if (parse_amount_sat(*sat, buffer + tok->start, tok->end - tok->start))
return NULL;
return command_fail_badparam(cmd, name, buffer, tok,
"should be a satoshi amount");
}
struct command_result *param_sat_or_all(struct command *cmd, const char *name,
const char *buffer, const jsmntok_t *tok,
struct amount_sat **sat)
{
if (json_tok_streq(buffer, tok, "all")) {
*sat = tal(cmd, struct amount_sat);
**sat = AMOUNT_SAT(-1ULL);
return NULL;
}
return param_sat(cmd, name, buffer, tok, sat);
}
struct command_result *param_node_id(struct command *cmd, const char *name,
const char *buffer, const jsmntok_t *tok,
struct node_id **id)
{
*id = tal(cmd, struct node_id);
if (json_to_node_id(buffer, tok, *id))
return NULL;
return command_fail_badparam(cmd, name, buffer, tok,
"should be a node id");
}
struct command_result *param_channel_id(struct command *cmd, const char *name,
const char *buffer, const jsmntok_t *tok,
struct channel_id **cid)
{
*cid = tal(cmd, struct channel_id);
if (json_to_channel_id(buffer, tok, *cid))
return NULL;
return command_fail_badparam(cmd, name, buffer, tok,
"should be a channel id");
}
struct command_result *param_secret(struct command *cmd, const char *name,
const char *buffer, const jsmntok_t *tok,
struct secret **secret)
{
*secret = tal(cmd, struct secret);
if (hex_decode(buffer + tok->start,
tok->end - tok->start,
*secret, sizeof(**secret)))
return NULL;
return command_fail_badparam(cmd, name, buffer, tok,
"should be a 32 byte hex value");
}
struct command_result *param_bin_from_hex(struct command *cmd, const char *name,
const char *buffer, const jsmntok_t *tok,
u8 **bin)
{
*bin = json_tok_bin_from_hex(cmd, buffer, tok);
if (bin != NULL)
return NULL;
return command_fail_badparam(cmd, name, buffer, tok,
"should be a hex value");
}
struct command_result *param_hops_array(struct command *cmd, const char *name,
const char *buffer, const jsmntok_t *tok,
struct sphinx_hop **hops)
{
const jsmntok_t *hop, *payloadtok, *pubkeytok;
struct sphinx_hop h;
size_t i;
if (tok->type != JSMN_ARRAY) {
return command_fail_badparam(cmd, name, buffer, tok,
"should be an array of hops");
}
*hops = tal_arr(cmd, struct sphinx_hop, 0);
json_for_each_arr(i, hop, tok) {
payloadtok = json_get_member(buffer, hop, "payload");
pubkeytok = json_get_member(buffer, hop, "pubkey");
if (!pubkeytok)
return command_fail(cmd, JSONRPC2_INVALID_PARAMS,
"Hop %zu does not have a pubkey", i);
if (!payloadtok)
return command_fail(cmd, JSONRPC2_INVALID_PARAMS,
"Hop %zu does not have a payload", i);
h.raw_payload = json_tok_bin_from_hex(*hops, buffer, payloadtok);
if (!json_to_pubkey(buffer, pubkeytok, &h.pubkey))
return command_fail_badparam(cmd, name, buffer, pubkeytok,
"should be a pubkey");
if (!h.raw_payload)
return command_fail_badparam(cmd, name, buffer,
payloadtok,
"should be hex");
tal_arr_expand(hops, h);
}
if (tal_count(*hops) == 0) {
return command_fail(cmd, JSONRPC2_INVALID_PARAMS,
"At least one hop must be specified.");
}
return NULL;
}
struct command_result *param_secrets_array(struct command *cmd,
const char *name, const char *buffer,
const jsmntok_t *tok,
struct secret **secrets)
{
size_t i;
const jsmntok_t *s;
struct secret secret;
if (tok->type != JSMN_ARRAY) {
return command_fail_badparam(cmd, name, buffer, tok,
"should be an array of secrets");
}
*secrets = tal_arr(cmd, struct secret, 0);
json_for_each_arr(i, s, tok) {
if (!hex_decode(buffer + s->start, s->end - s->start, &secret,
sizeof(secret)))
return command_fail(cmd, JSONRPC2_INVALID_PARAMS,
"'%s[%zu]' should be a 32 byte hex "
"value, not '%.*s'",
name, i, s->end - s->start,
buffer + s->start);
tal_arr_expand(secrets, secret);
}
return NULL;
}
struct command_result *param_feerate_val(struct command *cmd,
const char *name, const char *buffer,
const jsmntok_t *tok,
u32 **feerate_per_kw)
{
jsmntok_t base = *tok;
enum feerate_style style;
unsigned int num;
if (json_tok_endswith(buffer, tok,
feerate_style_name(FEERATE_PER_KBYTE))) {
style = FEERATE_PER_KBYTE;
base.end -= strlen(feerate_style_name(FEERATE_PER_KBYTE));
} else if (json_tok_endswith(buffer, tok,
feerate_style_name(FEERATE_PER_KSIPA))) {
style = FEERATE_PER_KSIPA;
base.end -= strlen(feerate_style_name(FEERATE_PER_KSIPA));
} else
style = FEERATE_PER_KBYTE;
if (!json_to_number(buffer, &base, &num)) {
return command_fail(cmd, JSONRPC2_INVALID_PARAMS,
"'%s' should be an integer with optional perkw/perkb, not '%.*s'",
name, base.end - base.start,
buffer + base.start);
}
*feerate_per_kw = tal(cmd, u32);
**feerate_per_kw = feerate_from_style(num, style);
if (**feerate_per_kw < FEERATE_FLOOR)
**feerate_per_kw = FEERATE_FLOOR;
return NULL;
}
/**
* segwit_addr_net_decode - Try to decode a Bech32 address and detect
* testnet/mainnet/regtest/signet
*
* This processes the address and returns a string if it is a Bech32
* address specified by BIP173. The string is set whether it is
* testnet or signet (both "tb"), mainnet ("bc"), regtest ("bcrt")
* It does not check, witness version and program size restrictions.
*
* Out: witness_version: Pointer to an int that will be updated to contain
* the witness program version (between 0 and 16 inclusive).
* witness_program: Pointer to a buffer of size 40 that will be updated
* to contain the witness program bytes.
* witness_program_len: Pointer to a size_t that will be updated to
* contain the length of bytes in witness_program.
* In: addrz: Pointer to the null-terminated address.
* Returns string containing the human readable segment of bech32 address
*/
static const char *segwit_addr_net_decode(int *witness_version,
uint8_t *witness_program,
size_t *witness_program_len,
const char *addrz,
const struct chainparams *chainparams)
{
if (segwit_addr_decode(witness_version, witness_program,
witness_program_len, chainparams->bip173_name,
addrz))
return chainparams->bip173_name;
else
return NULL;
}
enum address_parse_result
json_to_address_scriptpubkey(const tal_t *ctx,
const struct chainparams *chainparams,
const char *buffer,
const jsmntok_t *tok, const u8 **scriptpubkey)
{
struct bitcoin_address destination;
int witness_version;
/* segwit_addr_net_decode requires a buffer of size 40, and will
* not write to the buffer if the address is too long, so a buffer
* of fixed size 40 will not overflow. */
uint8_t witness_program[40];
size_t witness_program_len;
char *addrz;
const char *bip173;
bool parsed;
bool right_network;
u8 addr_version;
parsed =
ripemd160_from_base58(&addr_version, &destination.addr,
buffer + tok->start, tok->end - tok->start);
if (parsed) {
if (addr_version == chainparams->p2pkh_version) {
*scriptpubkey = scriptpubkey_p2pkh(ctx, &destination);
return ADDRESS_PARSE_SUCCESS;
} else if (addr_version == chainparams->p2sh_version) {
*scriptpubkey =
scriptpubkey_p2sh_hash(ctx, &destination.addr);
return ADDRESS_PARSE_SUCCESS;
} else {
return ADDRESS_PARSE_WRONG_NETWORK;
}
/* Insert other parsers that accept pointer+len here. */
}
/* Generate null-terminated address. */
addrz = tal_dup_arr(ctx, char, buffer + tok->start, tok->end - tok->start, 1);
addrz[tok->end - tok->start] = '\0';
bip173 = segwit_addr_net_decode(&witness_version, witness_program,
&witness_program_len, addrz, chainparams);
if (bip173) {
bool witness_ok = false;
if (witness_version == 0 && (witness_program_len == 20 ||
witness_program_len == 32)) {
witness_ok = true;
}
/* Insert other witness versions here. */
if (witness_ok) {
*scriptpubkey = scriptpubkey_witness_raw(ctx, witness_version,
witness_program, witness_program_len);
parsed = true;
right_network = streq(bip173, chainparams->bip173_name);
}
}
/* Insert other parsers that accept null-terminated string here. */
tal_free(addrz);
if (parsed) {
if (right_network)
return ADDRESS_PARSE_SUCCESS;
else
return ADDRESS_PARSE_WRONG_NETWORK;
}
return ADDRESS_PARSE_UNRECOGNIZED;
}
struct command_result *param_txid(struct command *cmd,
const char *name,
const char *buffer,
const jsmntok_t *tok,
struct bitcoin_txid **txid)
{
*txid = tal(cmd, struct bitcoin_txid);
if (json_to_txid(buffer, tok, *txid))
return NULL;
return command_fail_badparam(cmd, name, buffer, tok,
"should be a txid");
}
struct command_result *param_bitcoin_address(struct command *cmd,
const char *name,
const char *buffer,
const jsmntok_t *tok,
const u8 **scriptpubkey)
{
/* Parse address. */
switch (json_to_address_scriptpubkey(cmd,
chainparams,
buffer, tok,
scriptpubkey)) {
case ADDRESS_PARSE_UNRECOGNIZED:
return command_fail(cmd, LIGHTNINGD,
"Could not parse destination address, "
"%s should be a valid address",
name ? name : "address field");
case ADDRESS_PARSE_WRONG_NETWORK:
return command_fail(cmd, LIGHTNINGD,
"Destination address is not on network %s",
chainparams->network_name);
case ADDRESS_PARSE_SUCCESS:
return NULL;
}
abort();
}
struct command_result *param_psbt(struct command *cmd,
const char *name,
const char *buffer,
const jsmntok_t *tok,
struct wally_psbt **psbt)
{
*psbt = psbt_from_b64(cmd, buffer + tok->start, tok->end - tok->start);
if (*psbt)
return NULL;
return command_fail_badparam(cmd, name, buffer, tok,
"Expected a PSBT");
}
struct command_result *param_outpoint_arr(struct command *cmd,
const char *name,
const char *buffer,
const jsmntok_t *tok,
struct bitcoin_outpoint **outpoints)
{
size_t i;
const jsmntok_t *curr;
if (tok->type != JSMN_ARRAY) {
return command_fail(cmd, JSONRPC2_INVALID_PARAMS,
"Could not decode the outpoint array for %s: "
"\"%s\" is not a valid outpoint array.",
name, json_strdup(tmpctx, buffer, tok));
}
*outpoints = tal_arr(cmd, struct bitcoin_outpoint, tok->size);
json_for_each_arr(i, curr, tok) {
if (!json_to_outpoint(buffer, curr, &(*outpoints)[i]))
return command_fail(cmd, JSONRPC2_INVALID_PARAMS,
"Could not decode outpoint \"%.*s\", "
"expected format: txid:output",
json_tok_full_len(curr), json_tok_full(buffer, curr));
}
return NULL;
}