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Move WatchOnly stuff from SigningProvider to CWallet

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This commit is contained in:
Andrew Chow 2019-06-17 17:46:52 -04:00
parent 8f5b81e6ed
commit 93ce4a0b6f
4 changed files with 84 additions and 79 deletions
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61
src/script/signingprovider.cpp
View file

@ -73,8 +73,6 @@ void FillableSigningProvider::ImplicitlyLearnRelatedKeyScripts(const CPubKey& pu
{
AssertLockHeld(cs_KeyStore);
CKeyID key_id = pubkey.GetID();
// We must actually know about this key already.
assert(HaveKey(key_id) || mapWatchKeys.count(key_id));
// This adds the redeemscripts necessary to detect P2WPKH and P2SH-P2WPKH
// outputs. Technically P2WPKH outputs don't have a redeemscript to be
// spent. However, our current IsMine logic requires the corresponding
@ -98,12 +96,6 @@ bool FillableSigningProvider::GetPubKey(const CKeyID &address, CPubKey &vchPubKe
{
CKey key;
if (!GetKey(address, key)) {
LOCK(cs_KeyStore);
WatchKeyMap::const_iterator it = mapWatchKeys.find(address);
if (it != mapWatchKeys.end()) {
vchPubKeyOut = it->second;
return true;
}
return false;
}
vchPubKeyOut = key.GetPubKey();
@ -183,59 +175,6 @@ bool FillableSigningProvider::GetCScript(const CScriptID &hash, CScript& redeemS
return false;
}
static bool ExtractPubKey(const CScript &dest, CPubKey& pubKeyOut)
{
//TODO: Use Solver to extract this?
CScript::const_iterator pc = dest.begin();
opcodetype opcode;
std::vector<unsigned char> vch;
if (!dest.GetOp(pc, opcode, vch) || !CPubKey::ValidSize(vch))
return false;
pubKeyOut = CPubKey(vch);
if (!pubKeyOut.IsFullyValid())
return false;
if (!dest.GetOp(pc, opcode, vch) || opcode != OP_CHECKSIG || dest.GetOp(pc, opcode, vch))
return false;
return true;
}
bool FillableSigningProvider::AddWatchOnly(const CScript &dest)
{
LOCK(cs_KeyStore);
setWatchOnly.insert(dest);
CPubKey pubKey;
if (ExtractPubKey(dest, pubKey)) {
mapWatchKeys[pubKey.GetID()] = pubKey;
ImplicitlyLearnRelatedKeyScripts(pubKey);
}
return true;
}
bool FillableSigningProvider::RemoveWatchOnly(const CScript &dest)
{
LOCK(cs_KeyStore);
setWatchOnly.erase(dest);
CPubKey pubKey;
if (ExtractPubKey(dest, pubKey)) {
mapWatchKeys.erase(pubKey.GetID());
}
// Related CScripts are not removed; having superfluous scripts around is
// harmless (see comment in ImplicitlyLearnRelatedKeyScripts).
return true;
}
bool FillableSigningProvider::HaveWatchOnly(const CScript &dest) const
{
LOCK(cs_KeyStore);
return setWatchOnly.count(dest) > 0;
}
bool FillableSigningProvider::HaveWatchOnly() const
{
LOCK(cs_KeyStore);
return (!setWatchOnly.empty());
}
CKeyID GetKeyForDestination(const SigningProvider& store, const CTxDestination& dest)
{
// Only supports destinations which map to single public keys, i.e. P2PKH,

9
src/script/signingprovider.h
View file

@ -66,14 +66,10 @@ protected:
mutable CCriticalSection cs_KeyStore;
using KeyMap = std::map<CKeyID, CKey>;
using WatchKeyMap = std::map<CKeyID, CPubKey>;
using ScriptMap = std::map<CScriptID, CScript>;
using WatchOnlySet = std::set<CScript>;
KeyMap mapKeys GUARDED_BY(cs_KeyStore);
WatchKeyMap mapWatchKeys GUARDED_BY(cs_KeyStore);
ScriptMap mapScripts GUARDED_BY(cs_KeyStore);
WatchOnlySet setWatchOnly GUARDED_BY(cs_KeyStore);
void ImplicitlyLearnRelatedKeyScripts(const CPubKey& pubkey) EXCLUSIVE_LOCKS_REQUIRED(cs_KeyStore);
@ -88,11 +84,6 @@ public:
virtual bool HaveCScript(const CScriptID &hash) const override;
virtual std::set<CScriptID> GetCScripts() const;
virtual bool GetCScript(const CScriptID &hash, CScript& redeemScriptOut) const override;
virtual bool AddWatchOnly(const CScript &dest);
virtual bool RemoveWatchOnly(const CScript &dest);
virtual bool HaveWatchOnly(const CScript &dest) const;
virtual bool HaveWatchOnly() const;
};
/** Return the CKeyID of the key involved in a script (if there is a unique one). */

78
src/wallet/wallet.cpp
View file

@ -455,9 +455,37 @@ bool CWallet::LoadCScript(const CScript& redeemScript)
return FillableSigningProvider::AddCScript(redeemScript);
}
static bool ExtractPubKey(const CScript &dest, CPubKey& pubKeyOut)
{
//TODO: Use Solver to extract this?
CScript::const_iterator pc = dest.begin();
opcodetype opcode;
std::vector<unsigned char> vch;
if (!dest.GetOp(pc, opcode, vch) || !CPubKey::ValidSize(vch))
return false;
pubKeyOut = CPubKey(vch);
if (!pubKeyOut.IsFullyValid())
return false;
if (!dest.GetOp(pc, opcode, vch) || opcode != OP_CHECKSIG || dest.GetOp(pc, opcode, vch))
return false;
return true;
}
bool CWallet::AddWatchOnlyInMem(const CScript &dest)
{
LOCK(cs_KeyStore);
setWatchOnly.insert(dest);
CPubKey pubKey;
if (ExtractPubKey(dest, pubKey)) {
mapWatchKeys[pubKey.GetID()] = pubKey;
ImplicitlyLearnRelatedKeyScripts(pubKey);
}
return true;
}
bool CWallet::AddWatchOnlyWithDB(WalletBatch &batch, const CScript& dest)
{
if (!FillableSigningProvider::AddWatchOnly(dest))
if (!AddWatchOnlyInMem(dest))
return false;
const CKeyMetadata& meta = m_script_metadata[CScriptID(dest)];
UpdateTimeFirstKey(meta.nCreateTime);
@ -490,8 +518,17 @@ bool CWallet::AddWatchOnly(const CScript& dest, int64_t nCreateTime)
bool CWallet::RemoveWatchOnly(const CScript &dest)
{
AssertLockHeld(cs_wallet);
if (!FillableSigningProvider::RemoveWatchOnly(dest))
return false;
{
LOCK(cs_KeyStore);
setWatchOnly.erase(dest);
CPubKey pubKey;
if (ExtractPubKey(dest, pubKey)) {
mapWatchKeys.erase(pubKey.GetID());
}
// Related CScripts are not removed; having superfluous scripts around is
// harmless (see comment in ImplicitlyLearnRelatedKeyScripts).
}
if (!HaveWatchOnly())
NotifyWatchonlyChanged(false);
if (!WalletBatch(*database).EraseWatchOnly(dest))
@ -502,7 +539,19 @@ bool CWallet::RemoveWatchOnly(const CScript &dest)
bool CWallet::LoadWatchOnly(const CScript &dest)
{
return FillableSigningProvider::AddWatchOnly(dest);
return AddWatchOnlyInMem(dest);
}
bool CWallet::HaveWatchOnly(const CScript &dest) const
{
LOCK(cs_KeyStore);
return setWatchOnly.count(dest) > 0;
}
bool CWallet::HaveWatchOnly() const
{
LOCK(cs_KeyStore);
return (!setWatchOnly.empty());
}
bool CWallet::Unlock(const SecureString& strWalletPassphrase, bool accept_no_keys)
@ -4687,11 +4736,26 @@ bool CWallet::GetKey(const CKeyID &address, CKey& keyOut) const
return false;
}
bool CWallet::GetWatchPubKey(const CKeyID &address, CPubKey &pubkey_out) const
{
LOCK(cs_KeyStore);
WatchKeyMap::const_iterator it = mapWatchKeys.find(address);
if (it != mapWatchKeys.end()) {
pubkey_out = it->second;
return true;
}
return false;
}
bool CWallet::GetPubKey(const CKeyID &address, CPubKey& vchPubKeyOut) const
{
LOCK(cs_KeyStore);
if (!IsCrypted())
return FillableSigningProvider::GetPubKey(address, vchPubKeyOut);
if (!IsCrypted()) {
if (!FillableSigningProvider::GetPubKey(address, vchPubKeyOut)) {
return GetWatchPubKey(address, vchPubKeyOut);
}
return true;
}
CryptedKeyMap::const_iterator mi = mapCryptedKeys.find(address);
if (mi != mapCryptedKeys.end())
@ -4700,7 +4764,7 @@ bool CWallet::GetPubKey(const CKeyID &address, CPubKey& vchPubKeyOut) const
return true;
}
// Check for watch-only pubkeys
return FillableSigningProvider::GetPubKey(address, vchPubKeyOut);
return GetWatchPubKey(address, vchPubKeyOut);
}
std::set<CKeyID> CWallet::GetKeys() const

15
src/wallet/wallet.h
View file

@ -724,6 +724,8 @@ private:
bool fDecryptionThoroughlyChecked;
using CryptedKeyMap = std::map<CKeyID, std::pair<CPubKey, std::vector<unsigned char>>>;
using WatchOnlySet = std::set<CScript>;
using WatchKeyMap = std::map<CKeyID, CPubKey>;
bool SetCrypted();
@ -732,6 +734,8 @@ private:
bool Unlock(const CKeyingMaterial& vMasterKeyIn, bool accept_no_keys = false);
CryptedKeyMap mapCryptedKeys GUARDED_BY(cs_KeyStore);
WatchOnlySet setWatchOnly GUARDED_BY(cs_KeyStore);
WatchKeyMap mapWatchKeys GUARDED_BY(cs_KeyStore);
bool AddCryptedKeyInner(const CPubKey &vchPubKey, const std::vector<unsigned char> &vchCryptedSecret);
bool AddKeyPubKeyInner(const CKey& key, const CPubKey &pubkey);
@ -818,8 +822,9 @@ private:
* of the other AddWatchOnly which accepts a timestamp and sets
* nTimeFirstKey more intelligently for more efficient rescans.
*/
bool AddWatchOnly(const CScript& dest) override EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
bool AddWatchOnly(const CScript& dest) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
bool AddWatchOnlyWithDB(WalletBatch &batch, const CScript& dest) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
bool AddWatchOnlyInMem(const CScript &dest);
/** Add a KeyOriginInfo to the wallet */
bool AddKeyOriginWithDB(WalletBatch& batch, const CPubKey& pubkey, const KeyOriginInfo& info);
@ -1039,9 +1044,15 @@ public:
//! Adds a watch-only address to the store, and saves it to disk.
bool AddWatchOnly(const CScript& dest, int64_t nCreateTime) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
bool RemoveWatchOnly(const CScript &dest) override EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
bool RemoveWatchOnly(const CScript &dest) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
//! Adds a watch-only address to the store, without saving it to disk (used by LoadWallet)
bool LoadWatchOnly(const CScript &dest);
//! Returns whether the watch-only script is in the wallet
bool HaveWatchOnly(const CScript &dest) const;
//! Returns whether there are any watch-only things in the wallet
bool HaveWatchOnly() const;
//! Fetches a pubkey from mapWatchKeys if it exists there
bool GetWatchPubKey(const CKeyID &address, CPubKey &pubkey_out) const;
//! Holds a timestamp at which point the wallet is scheduled (externally) to be relocked. Caller must arrange for actual relocking to occur via Lock().
int64_t nRelockTime = 0;