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621bfe370e
This is now permitted in the offers PR, so we should support it. But we can't just look up in the gossmap, since the "short_channel_id" could be an alias. So we get lightningd to tell us all scid->peer mappings, and look up in that. Changelog-Added: Protocol: onion messages can now be forwarded by short_channel_id. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
36 lines
1.3 KiB
C
36 lines
1.3 KiB
C
#ifndef LIGHTNING_COMMON_ONION_MESSAGE_PARSE_H
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#define LIGHTNING_COMMON_ONION_MESSAGE_PARSE_H
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#include "config.h"
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#include <bitcoin/privkey.h>
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#include <common/amount.h>
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struct tlv_onionmsg_tlv;
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struct sciddir_or_pubkey;
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struct pubkey;
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/**
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* onion_message_parse: core routine to check onion_message
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* @ctx: context to allocate @next_onion_msg or @final_om/@path_id off
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* @onion_message_packet: Sphinx-encrypted onion
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* @blinding: Blinding we were given for @onion_message_packet
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* @me: my pubkey
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* @next_onion_msg (out): set if we should forward, otherwise NULL.
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* @next_node (out): set to node id or scid to fwd to, iff *@next_onion_msg.
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* @final_om (out): set if we're the final hop, otherwise NULL.
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* @final_alias (out): our alias (if *@final_om), or our own ID
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* @final_path_id (out): secret enclosed, if any (iff *@final_om).
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*
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* Returns NULL if it was valid, otherwise an error string.
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*/
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const char *onion_message_parse(const tal_t *ctx,
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const u8 *onion_message_packet,
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const struct pubkey *blinding,
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const struct pubkey *me,
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u8 **next_onion_msg,
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struct sciddir_or_pubkey *next_node,
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struct tlv_onionmsg_tlv **final_om,
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struct pubkey *final_alias,
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struct secret **final_path_id);
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#endif /* LIGHTNING_COMMON_ONION_MESSAGE_PARSE_H */
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