71eb04064c
Since we included the spec for it, this is a good time to implement it. I also asked chatgpt to write some unit tests. I had to mangle them a bit, but it probably saved me a few minutes. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
32 lines
1.2 KiB
C
32 lines
1.2 KiB
C
#ifndef LIGHTNING_COMMON_SHUTDOWN_SCRIPTPUBKEY_H
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#define LIGHTNING_COMMON_SHUTDOWN_SCRIPTPUBKEY_H
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#include "config.h"
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#include <ccan/short_types/short_types.h>
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/* BOLT #2:
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*
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* 1. `OP_0` `20` 20-bytes (version 0 pay to witness pubkey hash), OR
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* 2. `OP_0` `32` 32-bytes (version 0 pay to witness script hash), OR
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* 3. if (and only if) `option_shutdown_anysegwit` is negotiated:
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* * `OP_1` through `OP_16` inclusive, followed by a single push of 2 to 40 bytes
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* (witness program versions 1 through 16)
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* 4. if (and only if) `option_simple_close` is negotiated:
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* * `OP_RETURN` followed by one of:
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* * `6` to `75` inclusive followed by exactly that many bytes
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* * `76` followed by `76` to `80` followed by exactly that many bytes
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*
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* A receiving node:
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*...
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* - if the `scriptpubkey` is not in one of the above forms:
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* - SHOULD send a `warning`
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*/
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/* We still allow them to specify an old-style P2PKH or P2SH (though we
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* never will send such a thing!) if they're not using anchors. */
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bool valid_shutdown_scriptpubkey(const u8 *scriptpubkey,
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bool anysegwit,
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bool allow_oldstyle,
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bool option_simple_close);
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#endif /* LIGHTNING_COMMON_SHUTDOWN_SCRIPTPUBKEY_H */
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