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#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/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(cmd, JSONRPC2_INVALID_PARAMS,
"'%s' should be an array, not '%.*s'",
name, tok->end - tok->start, buffer + tok->start);
}
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(cmd, JSONRPC2_INVALID_PARAMS,
"'%s' should be 'true' or 'false', not '%.*s'",
name, tok->end - tok->start, buffer + tok->start);
}
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(
cmd, JSONRPC2_INVALID_PARAMS,
"'%s' should be a non-negative floating-point number, not '%.*s'",
name, tok->end - tok->start, buffer + tok->start);
}
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(cmd, JSONRPC2_INVALID_PARAMS,
"'%s' should be a string, not '%.*s'"
" (note, we don't allow \\u)",
name,
tok->end - tok->start, buffer + tok->start);
}
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(cmd, JSONRPC2_INVALID_PARAMS,
"'%s' should be a string or number, not '%.*s'",
name, tok->end - tok->start, buffer + tok->start);
}
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(cmd, JSONRPC2_INVALID_PARAMS,
"'%s' should be an integer, not '%.*s'",
name, tok->end - tok->start, buffer + tok->start);
}
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(cmd, JSONRPC2_INVALID_PARAMS,
"'%s' should be a 32 byte hex value, not '%.*s'",
name, tok->end - tok->start, buffer + tok->start);
}
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(cmd, JSONRPC2_INVALID_PARAMS,
"'%s' should be an unsigned 64 bit integer, not '%.*s'",
name, tok->end - tok->start, buffer + tok->start);
}
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(cmd, JSONRPC2_INVALID_PARAMS,
"'%s' should be a millisatoshi amount, not '%.*s'",
name, tok->end - tok->start, buffer + tok->start);
}
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(cmd, JSONRPC2_INVALID_PARAMS,
"%s should be a satoshi amount, not '%.*s'",
name ? name : "amount field",
tok->end - tok->start, buffer + tok->start);
}
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(cmd, JSONRPC2_INVALID_PARAMS,
"'%s' should be a node id, not '%.*s'",
name, json_tok_full_len(tok),
json_tok_full(buffer, tok));
}
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(cmd, JSONRPC2_INVALID_PARAMS,
"'%s' should be a channel id, not '%.*s'",
name, json_tok_full_len(tok),
json_tok_full(buffer, tok));
}
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(cmd, JSONRPC2_INVALID_PARAMS,
"'%s' should be a 32 byte hex value, not '%.*s'",
name, tok->end - tok->start, buffer + tok->start);
}
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;
else
return command_fail(cmd, JSONRPC2_INVALID_PARAMS,
"'%s' should be a hex value, not '%.*s'",
name, tok->end - tok->start, buffer + tok->start);
}
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(
cmd, JSONRPC2_INVALID_PARAMS,
"'%s' should be an array of hops, got '%.*s'", name,
tok->end - tok->start, buffer + tok->start);
}
*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(
cmd, JSONRPC2_INVALID_PARAMS,
"'pubkey' should be a pubkey, not '%.*s'",
pubkeytok->end - pubkeytok->start,
buffer + pubkeytok->start);
if (!h.raw_payload)
return command_fail(
cmd, JSONRPC2_INVALID_PARAMS,
"'payload' should be a hex encoded binary, not '%.*s'",
pubkeytok->end - pubkeytok->start,
buffer + pubkeytok->start);
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(
cmd, JSONRPC2_INVALID_PARAMS,
"'%s' should be an array of secrets, got '%.*s'", name,
tok->end - tok->start, buffer + tok->start);
}
*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;
}