Finally add support for watch-only addresses

src/keystore.cpp

@@ -59,3 +59,15 @@ bool CBasicKeyStore::GetCScript(const CScriptID &hash, CScript& redeemScriptOut)
     return false;
 }
 
+bool CBasicKeyStore::AddWatchOnly(const CScript &dest)
+{
+    LOCK(cs_KeyStore);
+    setWatchOnly.insert(dest);
+    return true;
+}
+
+bool CBasicKeyStore::HaveWatchOnly(const CScript &dest) const
+{
+    LOCK(cs_KeyStore);
+    return setWatchOnly.count(dest) > 0;
+}

src/keystore.h

@@ -8,11 +8,21 @@
 
 #include "key.h"
 #include "sync.h"
+#include "script.h"     // for CNoDestination
 
 #include <boost/signals2/signal.hpp>
+#include <boost/variant.hpp>
 
 class CScript;
 
+/** A txout script template with a specific destination. It is either:
+ *  * CNoDestination: no destination set
+ *  * CKeyID: TX_PUBKEYHASH destination
+ *  * CScriptID: TX_SCRIPTHASH destination
+ *  A CTxDestination is the internal data type encoded in a CBitcoinAddress
+ */
+typedef boost::variant<CNoDestination, CKeyID, CScriptID> CTxDestination;
+
 /** A virtual base class for key stores */
 class CKeyStore
 {
@@ -36,17 +46,23 @@ class CKeyStore
     virtual bool AddCScript(const CScript& redeemScript) =0;
     virtual bool HaveCScript(const CScriptID &hash) const =0;
     virtual bool GetCScript(const CScriptID &hash, CScript& redeemScriptOut) const =0;
+
+    // Support for Watch-only addresses
+    virtual bool AddWatchOnly(const CScript &dest) =0;
+    virtual bool HaveWatchOnly(const CScript &dest) const =0;
 };
 
 typedef std::map<CKeyID, CKey> KeyMap;
 typedef std::map<CScriptID, CScript > ScriptMap;
+typedef std::set<CScript> WatchOnlySet;
 
 /** Basic key store, that keeps keys in an address->secret map */
 class CBasicKeyStore : public CKeyStore
 {
 protected:
     KeyMap mapKeys;
     ScriptMap mapScripts;
+    WatchOnlySet setWatchOnly;
 
 public:
     bool AddKeyPubKey(const CKey& key, const CPubKey &pubkey);
@@ -88,6 +104,9 @@ class CBasicKeyStore : public CKeyStore
     virtual bool AddCScript(const CScript& redeemScript);
     virtual bool HaveCScript(const CScriptID &hash) const;
     virtual bool GetCScript(const CScriptID &hash, CScript& redeemScriptOut) const;
+
+    virtual bool AddWatchOnly(const CScript &dest);
+    virtual bool HaveWatchOnly(const CScript &dest) const;
 };
 
 typedef std::vector<unsigned char, secure_allocator<unsigned char> > CKeyingMaterial;