Function handle_invoice_request

plugins/offers_invreq_hook.c:837–901

}

struct command_result *handle_invoice_request(struct command *cmd,
					      const u8 *invreqbin,
					      struct tlv_onionmsg_payload_reply_path *reply_path)
{
	size_t len = tal_count(invreqbin);
	struct invreq *ir = tal(cmd, struct invreq);
	struct out_req *req;
	int bad_feature;

	ir->reply_path = tal_steal(ir, reply_path);

	ir->invreq = fromwire_tlv_invoice_request(cmd, &invreqbin, &len);
	if (!ir->invreq) {
		return fail_invreq(cmd, ir,
				   "Invalid invreq %s",
				   tal_hex(tmpctx, invreqbin));
	}

	/* BOLT-offers #12:
	 *
	 * The reader of an invoice_request:
	 *...
	 *   - MUST fail the request if `features` contains unknown even bits.
	 */
	bad_feature = features_unsupported(plugin_feature_set(cmd->plugin),
					   ir->invreq->features,
					   BOLT11_FEATURE);
	if (bad_feature != -1) {
		return fail_invreq(cmd, ir,
				   "Unsupported invreq feature %i",
				   bad_feature);
	}

	/* BOLT-offers #12:
	 *
	 * The reader of an invoice_request:
	 *...
	 *  - if `chain` is not present:
	 *    - MUST fail the request if bitcoin is not a supported chain.
	 *  - otherwise:
	 *    - MUST fail the request if `chain` is not a supported chain.
	 */
	if (!bolt12_chain_matches(ir->invreq->chain, chainparams)) {
		return fail_invreq(cmd, ir,
				   "Wrong chain %s",
				   tal_hex(tmpctx, ir->invreq->chain));
	}

	/* BOLT-offers #12:
	 *
	 * The reader of an invoice_request:
	 *   - MUST fail the request if `payer_key` is not present.
	 */
	if (!ir->invreq->payer_key)
		return fail_invreq(cmd, ir, "Missing payer key");

	if (!ir->invreq->offer_id)
		return handle_offerless_request(cmd, ir);