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script: add helper for checking if a 'known type'

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To be used for verifying remote inputs' validity
This commit is contained in:
lisa neigut 2019-09-18 19:02:20 -05:00 committed by Rusty Russell
parent 6f85088b2b
commit cb2cad8c94
2 changed files with 9 additions and 0 deletions
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6
bitcoin/script.c
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@ -436,6 +436,12 @@ bool is_p2wpkh(const u8 *script, struct bitcoin_address *addr)
return true;
}
bool is_known_scripttype(const u8 *script)
{
return is_p2wpkh(script, NULL) || is_p2wsh(script, NULL)
|| is_p2sh(script, NULL) || is_p2pkh(script, NULL);
}
u8 **bitcoin_witness_sig_and_element(const tal_t *ctx,
const struct bitcoin_signature *sig,
const void *elem, size_t elemsize,

3
bitcoin/script.h
View File

@ -135,6 +135,9 @@ bool is_p2wsh(const u8 *script, struct sha256 *addr);
/* Is this (version 0) pay to witness pubkey hash? (extract addr if not NULL) */
bool is_p2wpkh(const u8 *script, struct bitcoin_address *addr);
/* Is this one of the four above script types? */
bool is_known_scripttype(const u8 *script);
/* Are these two scripts equal? */
bool scripteq(const u8 *s1, const u8 *s2);