Onion TLV support (EXPERIMENTAL_FEATURE) #3167
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tests/test_pay.py
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| wait_for(lambda: 'alias' in l1.rpc.listnodes(l3.info['id'])['nodes'][0]) | ||
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| inv = l3.rpc.invoice(10000, "test_tlv3", "test_tlv3")['bolt11'] | ||
| print(inv) |
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probably can delete this
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Rebased on top of #3245 |
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Back on top of master again... |
| vsize = bigsize_get(src, 3, &raw_size); | ||
| hop_size = raw_size + vsize + HMAC_SIZE; | ||
| step->type = SPHINX_TLV_PAYLOAD; | ||
| } else { | ||
| step->type = SPHINX_INVALID_PAYLOAD; | ||
| return; |
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Good catch, the src[0] == 1 escape hatch got lost somewhere before.
| /* This should probably be removed, as it's just for testing */ | ||
| case SPHINX_RAW_PAYLOAD: | ||
| abort(); | ||
| } | ||
| abort(); |
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Yes, if you want I can clean it up since it also touches the onion-tool.
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The onion tool actually uses this to make an arbitrary raw payload, so we'll leave it for a bit longer.
| @@ -81,6 +81,7 @@ struct route_step { | |||
| enum sphinx_payload_type type; | |||
| union { | |||
| struct hop_data_legacy v0; | |||
| struct tlv_tlv_payload *tlv; | |||
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Why not make this an instance of the struct tlv_tlv_payload instead of a pointer to it? The struct itself only consists of 3 pointers (fixed size) and we'd be saving 1 allocation.
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Our marshaling/unmarshaling really wants a pointer...
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Hm, ok, I should read the TLV implementation more carefully :-)
devtools/onion.c
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| /* FIXME: Generic realm support, not this hack! */ | ||
| /* FIXME: Multi hop! */ | ||
| /* /<hex> -> raw hopdata. /tlv -> TLV encoding. */ | ||
| if (argv[1 + i][klen] != '\0' && argv[1 + i][klen] != 't') { |
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This seems to undo some of the fixes from #3250 (https://github.com/ElementsProject/lightning/pull/3250/files#diff-6ba0afe5becbb580348286dbd8ca2b5cR63). Which version is the correct one?
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I've just rebased again on master, which fixes this...
This highlights the various places we need to change. Signed-off-by: Rusty Russell <[email protected]>
We add routines to decode the expected fields from both legacy and tlv hop formats. Signed-off-by: Rusty Russell <[email protected]>
Signed-off-by: Rusty Russell <[email protected]> Changelog-changed: JSON API: `htlc_accepted` hook has `type` (currently `legacy` or `tlv`) and other fields directly inside `onion`. Changelog-deprecated: JSON API: `htlc_accepted` hook `per_hop_v0` object deprecated, as is `short_channel_id` for the final hop.
We keep the feature bitmap on disk, so we cache this in the struct explicitly. Signed-off-by: Rusty Russell <[email protected]>
There's only one caller. Signed-off-by: Rusty Russell <[email protected]>
Default is legacy. If we have future styles, new strings can be defined, but for now it's "tlv" or "legacy". Signed-off-by: Rusty Russell <[email protected]>
For legacy, they were the same, but for TLV we care whether it's the final hop or not. Signed-off-by: Rusty Russell <[email protected]>
This means we can make sphinx_add_v0_hop static, too. Signed-off-by: Rusty Russell <[email protected]>
Signed-off-by: Rusty Russell <[email protected]>
Signed-off-by: Rusty Russell <[email protected]>
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