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Diffstat (limited to 'src/script/signingprovider.h')
-rw-r--r-- | src/script/signingprovider.h | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/src/script/signingprovider.h b/src/script/signingprovider.h new file mode 100644 index 0000000000..5ead763826 --- /dev/null +++ b/src/script/signingprovider.h @@ -0,0 +1,101 @@ +// Copyright (c) 2009-2010 Satoshi Nakamoto +// Copyright (c) 2009-2019 The Bitcoin Core developers +// Distributed under the MIT software license, see the accompanying +// file COPYING or http://www.opensource.org/licenses/mit-license.php. + +#ifndef BITCOIN_SCRIPT_SIGNINGPROVIDER_H +#define BITCOIN_SCRIPT_SIGNINGPROVIDER_H + +#include <key.h> +#include <pubkey.h> +#include <script/script.h> +#include <script/standard.h> +#include <sync.h> + +struct KeyOriginInfo; + +/** An interface to be implemented by keystores that support signing. */ +class SigningProvider +{ +public: + virtual ~SigningProvider() {} + virtual bool GetCScript(const CScriptID &scriptid, CScript& script) const { return false; } + virtual bool HaveCScript(const CScriptID &scriptid) const { return false; } + virtual bool GetPubKey(const CKeyID &address, CPubKey& pubkey) const { return false; } + virtual bool GetKey(const CKeyID &address, CKey& key) const { return false; } + virtual bool HaveKey(const CKeyID &address) const { return false; } + virtual bool GetKeyOrigin(const CKeyID& keyid, KeyOriginInfo& info) const { return false; } +}; + +extern const SigningProvider& DUMMY_SIGNING_PROVIDER; + +class HidingSigningProvider : public SigningProvider +{ +private: + const bool m_hide_secret; + const bool m_hide_origin; + const SigningProvider* m_provider; + +public: + HidingSigningProvider(const SigningProvider* provider, bool hide_secret, bool hide_origin) : m_hide_secret(hide_secret), m_hide_origin(hide_origin), m_provider(provider) {} + bool GetCScript(const CScriptID& scriptid, CScript& script) const override; + bool GetPubKey(const CKeyID& keyid, CPubKey& pubkey) const override; + bool GetKey(const CKeyID& keyid, CKey& key) const override; + bool GetKeyOrigin(const CKeyID& keyid, KeyOriginInfo& info) const override; +}; + +struct FlatSigningProvider final : public SigningProvider +{ + std::map<CScriptID, CScript> scripts; + std::map<CKeyID, CPubKey> pubkeys; + std::map<CKeyID, std::pair<CPubKey, KeyOriginInfo>> origins; + std::map<CKeyID, CKey> keys; + + bool GetCScript(const CScriptID& scriptid, CScript& script) const override; + bool GetPubKey(const CKeyID& keyid, CPubKey& pubkey) const override; + bool GetKeyOrigin(const CKeyID& keyid, KeyOriginInfo& info) const override; + bool GetKey(const CKeyID& keyid, CKey& key) const override; +}; + +FlatSigningProvider Merge(const FlatSigningProvider& a, const FlatSigningProvider& b); + +/** Fillable signing provider that keeps keys in an address->secret map */ +class FillableSigningProvider : public SigningProvider +{ +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); + +public: + virtual bool AddKeyPubKey(const CKey& key, const CPubKey &pubkey); + virtual bool AddKey(const CKey &key) { return AddKeyPubKey(key, key.GetPubKey()); } + virtual bool GetPubKey(const CKeyID &address, CPubKey& vchPubKeyOut) const override; + virtual bool HaveKey(const CKeyID &address) const override; + virtual std::set<CKeyID> GetKeys() const; + virtual bool GetKey(const CKeyID &address, CKey &keyOut) const override; + virtual bool AddCScript(const CScript& redeemScript); + 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). */ +CKeyID GetKeyForDestination(const SigningProvider& store, const CTxDestination& dest); + +#endif // BITCOIN_SCRIPT_SIGNINGPROVIDER_H |