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-rw-r--r--src/script/signingprovider.h92
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diff --git a/src/script/signingprovider.h b/src/script/signingprovider.h
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+// 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 ScriptMap = std::map<CScriptID, CScript>;
+
+ KeyMap mapKeys GUARDED_BY(cs_KeyStore);
+ ScriptMap mapScripts 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;
+};
+
+/** 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