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Simplify IsMine logic

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This commit is contained in:
Pieter Wuille 2018-05-01 12:51:30 -07:00
parent 4e91820531
commit b5802a9f5f
1 changed files with 28 additions and 26 deletions
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54
src/script/ismine.cpp
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@ -42,17 +42,20 @@ bool HaveKeys(const std::vector<valtype>& pubkeys, const CKeyStore& keystore)
return true;
}
void Update(isminetype& val, isminetype update)
{
if (val == ISMINE_NO) val = update;
if (val == ISMINE_WATCH_ONLY && update == ISMINE_SPENDABLE) val = update;
}
isminetype IsMineInner(const CKeyStore& keystore, const CScript& scriptPubKey, bool& isInvalid, IsMineSigVersion sigversion)
{
isminetype ret = ISMINE_NO;
isInvalid = false;
std::vector<valtype> vSolutions;
txnouttype whichType;
if (!Solver(scriptPubKey, whichType, vSolutions)) {
if (keystore.HaveWatchOnly(scriptPubKey)) {
return ISMINE_WATCH_ONLY;
}
}
Solver(scriptPubKey, whichType, vSolutions);
CKeyID keyID;
switch (whichType)
@ -67,8 +70,9 @@ isminetype IsMineInner(const CKeyStore& keystore, const CScript& scriptPubKey, b
isInvalid = true;
return ISMINE_NO;
}
if (keystore.HaveKey(keyID))
return ISMINE_SPENDABLE;
if (keystore.HaveKey(keyID)) {
Update(ret, ISMINE_SPENDABLE);
}
break;
case TX_WITNESS_V0_KEYHASH:
{
@ -78,10 +82,7 @@ isminetype IsMineInner(const CKeyStore& keystore, const CScript& scriptPubKey, b
// This also applies to the P2WSH case.
break;
}
isminetype ret = IsMineInner(keystore, GetScriptForDestination(CKeyID(uint160(vSolutions[0]))), isInvalid, IsMineSigVersion::WITNESS_V0);
if (ret == ISMINE_SPENDABLE || ret == ISMINE_WATCH_ONLY || (ret == ISMINE_NO && isInvalid)) {
return ret;
}
Update(ret, IsMineInner(keystore, GetScriptForDestination(CKeyID(uint160(vSolutions[0]))), isInvalid, IsMineSigVersion::WITNESS_V0));
break;
}
case TX_PUBKEYHASH:
@ -93,18 +94,16 @@ isminetype IsMineInner(const CKeyStore& keystore, const CScript& scriptPubKey, b
return ISMINE_NO;
}
}
if (keystore.HaveKey(keyID))
return ISMINE_SPENDABLE;
if (keystore.HaveKey(keyID)) {
Update(ret, ISMINE_SPENDABLE);
}
break;
case TX_SCRIPTHASH:
{
CScriptID scriptID = CScriptID(uint160(vSolutions[0]));
CScript subscript;
if (keystore.GetCScript(scriptID, subscript)) {
isminetype ret = IsMineInner(keystore, subscript, isInvalid, IsMineSigVersion::P2SH);
if (ret == ISMINE_SPENDABLE || ret == ISMINE_WATCH_ONLY || (ret == ISMINE_NO && isInvalid)) {
return ret;
}
Update(ret, IsMineInner(keystore, subscript, isInvalid, IsMineSigVersion::P2SH));
}
break;
}
@ -118,10 +117,7 @@ isminetype IsMineInner(const CKeyStore& keystore, const CScript& scriptPubKey, b
CScriptID scriptID = CScriptID(hash);
CScript subscript;
if (keystore.GetCScript(scriptID, subscript)) {
isminetype ret = IsMineInner(keystore, subscript, isInvalid, IsMineSigVersion::WITNESS_V0);
if (ret == ISMINE_SPENDABLE || ret == ISMINE_WATCH_ONLY || (ret == ISMINE_NO && isInvalid)) {
return ret;
}
Update(ret, IsMineInner(keystore, subscript, isInvalid, IsMineSigVersion::WITNESS_V0));
}
break;
}
@ -129,7 +125,9 @@ isminetype IsMineInner(const CKeyStore& keystore, const CScript& scriptPubKey, b
case TX_MULTISIG:
{
// Never treat bare multisig outputs as ours (they can still be made watchonly-though)
if (sigversion == IsMineSigVersion::TOP) break;
if (sigversion == IsMineSigVersion::TOP) {
break;
}
// Only consider transactions "mine" if we own ALL the
// keys involved. Multi-signature transactions that are
@ -146,23 +144,27 @@ isminetype IsMineInner(const CKeyStore& keystore, const CScript& scriptPubKey, b
}
}
if (HaveKeys(keys, keystore)) {
return ISMINE_SPENDABLE;
Update(ret, ISMINE_SPENDABLE);
}
break;
}
}
if (keystore.HaveWatchOnly(scriptPubKey)) {
if (ret == ISMINE_NO && keystore.HaveWatchOnly(scriptPubKey)) {
return ISMINE_WATCH_ONLY;
}
return ISMINE_NO;
return ret;
}
} // namespace
isminetype IsMine(const CKeyStore& keystore, const CScript& scriptPubKey, bool& isInvalid)
{
return IsMineInner(keystore, scriptPubKey, isInvalid, IsMineSigVersion::TOP);
isminetype ret = IsMineInner(keystore, scriptPubKey, isInvalid, IsMineSigVersion::TOP);
if (isInvalid) {
ret = ISMINE_NO;
}
return ret;
}
isminetype IsMine(const CKeyStore& keystore, const CScript& scriptPubKey)