79 lines
2.0 KiB
C
79 lines
2.0 KiB
C
#include "jsonrpc.h"
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#include "lightningd.h"
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#include "payment.h"
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#include <ccan/str/hex/hex.h>
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#include <ccan/structeq/structeq.h>
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#include <sodium/randombytes.h>
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struct payment *find_payment(struct lightningd_state *dstate,
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const struct sha256 *rhash)
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{
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struct payment *i;
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list_for_each(&dstate->payments, i, list) {
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if (structeq(rhash, &i->rhash))
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return i;
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}
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return NULL;
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}
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static void json_accept_payment(struct command *cmd,
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const char *buffer, const jsmntok_t *params)
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{
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struct payment *payment;
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jsmntok_t *msatoshis, *r;
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struct json_result *response = new_json_result(cmd);
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if (!json_get_params(buffer, params,
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"amount", &msatoshis,
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"?r", &r,
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NULL)) {
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command_fail(cmd, "Need {amount}");
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return;
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}
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payment = tal(cmd, struct payment);
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if (r) {
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if (!hex_decode(buffer + r->start, r->end - r->start,
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payment->r.r, sizeof(payment->r.r))) {
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command_fail(cmd, "Invalid hex r '%.*s'",
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r->end - r->start, buffer + r->start);
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return;
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}
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} else
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randombytes_buf(payment->r.r, sizeof(payment->r.r));
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sha256(&payment->rhash, payment->r.r, sizeof(payment->r.r));
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if (find_payment(cmd->dstate, &payment->rhash)) {
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command_fail(cmd, "Duplicate r value '%.*s'",
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r->end - r->start, buffer + r->start);
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return;
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}
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if (!json_tok_u64(buffer, msatoshis, &payment->msatoshis)
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|| payment->msatoshis == 0) {
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command_fail(cmd, "'%.*s' is not a valid positive number",
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msatoshis->end - msatoshis->start,
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buffer + msatoshis->start);
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return;
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}
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/* OK, connect it to main state, respond with hash */
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tal_steal(cmd->dstate, payment);
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list_add(&cmd->dstate->payments, &payment->list);
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json_object_start(response, NULL);
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json_add_hex(response, "rhash",
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&payment->rhash, sizeof(payment->rhash));
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json_object_end(response);
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command_success(cmd, response);
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}
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const struct json_command accept_payment_command = {
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"accept-payment",
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json_accept_payment,
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"Accept payment for {amount} (with a set {r}, otherwise generate one)",
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"Returns the {rhash} on success. "
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};
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