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script: enhance is_p2sh/is_p2pkh/is_p2wsh/is_p2wpkh to extract addr.

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Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2017-10-26 13:28:19 +10:30
parent 58604a0497
commit 9ec5cb7ba2
5 changed files with 25 additions and 17 deletions
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16
bitcoin/script.c
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@@ -368,7 +368,7 @@ u8 *p2wpkh_scriptcode(const tal_t *ctx, const struct pubkey *key)
return script;
}
bool is_p2pkh(const u8 *script)
bool is_p2pkh(const u8 *script, struct bitcoin_address *addr)
{
size_t script_len = tal_len(script);
@@ -384,10 +384,12 @@ bool is_p2pkh(const u8 *script)
return false;
if (script[24] != OP_CHECKSIG)
return false;
if (addr)
memcpy(addr, script+3, 20);
return true;
}
bool is_p2sh(const u8 *script)
bool is_p2sh(const u8 *script, struct ripemd160 *addr)
{
size_t script_len = tal_len(script);
@@ -399,10 +401,12 @@ bool is_p2sh(const u8 *script)
return false;
if (script[22] != OP_EQUAL)
return false;
if (addr)
memcpy(addr, script+2, 20);
return true;
}
bool is_p2wsh(const u8 *script)
bool is_p2wsh(const u8 *script, struct sha256 *addr)
{
size_t script_len = tal_len(script);
@@ -412,10 +416,12 @@ bool is_p2wsh(const u8 *script)
return false;
if (script[1] != OP_PUSHBYTES(sizeof(struct sha256)))
return false;
if (addr)
memcpy(addr, script+2, sizeof(struct sha256));
return true;
}
bool is_p2wpkh(const u8 *script)
bool is_p2wpkh(const u8 *script, struct bitcoin_address *addr)
{
size_t script_len = tal_len(script);
@@ -425,6 +431,8 @@ bool is_p2wpkh(const u8 *script)
return false;
if (script[1] != OP_PUSHBYTES(sizeof(struct ripemd160)))
return false;
if (addr)
memcpy(addr, script+2, sizeof(*addr));
return true;
}