88 lines
2.4 KiB
C
88 lines
2.4 KiB
C
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#include <channeld/gen_channel_wire.h>
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#include <lightningd/channel.h>
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#include <lightningd/lightningd.h>
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#include <lightningd/onion_message.h>
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#include <lightningd/peer_control.h>
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#include <lightningd/subd.h>
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#if EXPERIMENTAL_FEATURES
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/* Returns false if we can't tell it */
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static bool make_peer_send(struct lightningd *ld,
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struct channel *dst, const u8 *msg TAKES)
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{
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/* Take ownership of msg (noop if it's taken) */
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msg = tal_dup_talarr(tmpctx, u8, msg);
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if (!dst) {
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log_debug(ld->log, "Can't send %s: no channel",
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channel_wire_type_name(fromwire_peektype(msg)));
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return false;
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}
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if (!dst->owner) {
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log_debug(ld->log, "Can't send %s: not connected",
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channel_wire_type_name(fromwire_peektype(msg)));
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return false;
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}
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/* FIXME: We should allow this for closingd too, and we should
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* allow incoming via openingd!. */
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if (!streq(dst->owner->name, "channeld")) {
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log_debug(ld->log, "Can't send %s: owned by %s",
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channel_wire_type_name(fromwire_peektype(msg)),
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dst->owner->name);
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return false;
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}
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subd_send_msg(dst->owner, take(msg));
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return true;
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}
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void handle_onionmsg_to_us(struct channel *channel, const u8 *msg)
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{
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struct pubkey *reply_blinding;
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struct onionmsg_path **reply_path;
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if (!fromwire_got_onionmsg_to_us(msg, msg,
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&reply_blinding, &reply_path)) {
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channel_internal_error(channel, "bad got_onionmsg_tous: %s",
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tal_hex(tmpctx, msg));
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return;
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}
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log_info(channel->log, "Got onionmsg%s%s",
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reply_blinding ? " reply_blinding": "",
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reply_path ? " reply_path": "");
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}
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void handle_onionmsg_forward(struct channel *channel, const u8 *msg)
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{
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struct lightningd *ld = channel->peer->ld;
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struct short_channel_id *next_scid;
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struct node_id *next_node;
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struct pubkey *next_blinding;
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u8 onion[TOTAL_PACKET_SIZE];
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struct channel *outchan;
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if (!fromwire_got_onionmsg_forward(msg, msg, &next_scid, &next_node,
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&next_blinding, onion)) {
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channel_internal_error(channel, "bad got_onionmsg_forward: %s",
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tal_hex(tmpctx, msg));
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return;
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}
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if (next_scid)
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outchan = active_channel_by_scid(ld, next_scid);
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else if (next_node) {
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struct peer *p = peer_by_id(ld, next_node);
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if (p)
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outchan = peer_active_channel(p);
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else
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outchan = NULL;
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} else
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outchan = NULL;
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make_peer_send(ld, outchan,
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take(towire_send_onionmsg(NULL, onion, next_blinding)));
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}
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#endif /* EXPERIMENTAL_FEATURES */
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