Add purpose arg to Wallet::getAddress

Also make all arguments to getAddress required and document args at call sites.

src/interfaces/wallet.cpp

@@ -152,7 +152,10 @@ public:
     {
         return m_wallet.DelAddressBook(dest);
     }
-    bool getAddress(const CTxDestination& dest, std::string* name, isminetype* is_mine) override
+    bool getAddress(const CTxDestination& dest,
+        std::string* name,
+        isminetype* is_mine,
+        std::string* purpose) override
     {
         LOCK(m_wallet.cs_wallet);
         auto it = m_wallet.mapAddressBook.find(dest);
@@ -165,6 +168,9 @@ public:
         if (is_mine) {
             *is_mine = IsMine(m_wallet, dest);
         }
+        if (purpose) {
+            *purpose = it->second.purpose;
+        }
         return true;
     }
     std::vector<WalletAddress> getAddresses() override

src/interfaces/wallet.h

@@ -99,8 +99,9 @@ public:
 
     //! Look up address in wallet, return whether exists.
     virtual bool getAddress(const CTxDestination& dest,
-        std::string* name = nullptr,
+        std::string* name,
-        isminetype* is_mine = nullptr) = 0;
+        isminetype* is_mine,
+        std::string* purpose) = 0;
 
     //! Get wallet address list.
     virtual std::vector<WalletAddress> getAddresses() = 0;

src/qt/addresstablemodel.cpp

@@ -266,7 +266,8 @@ bool AddressTableModel::setData(const QModelIndex &index, const QVariant &value,
             }
             // Check for duplicate addresses to prevent accidental deletion of addresses, if you try
             // to paste an existing address over another address (with a different label)
-            if (walletModel->wallet().getAddress(newAddress))
+            if (walletModel->wallet().getAddress(
+                    newAddress, /* name= */ nullptr, /* is_mine= */ nullptr, /* purpose= */ nullptr))
             {
                 editStatus = DUPLICATE_ADDRESS;
                 return false;
@@ -351,7 +352,8 @@ QString AddressTableModel::addRow(const QString &type, const QString &label, con
         }
         // Check for duplicate addresses
         {
-            if(walletModel->wallet().getAddress(DecodeDestination(strAddress)))
+            if (walletModel->wallet().getAddress(
+                    DecodeDestination(strAddress), /* name= */ nullptr, /* is_mine= */ nullptr, /* purpose= */ nullptr))
             {
                 editStatus = DUPLICATE_ADDRESS;
                 return QString();

src/qt/transactiondesc.cpp

@@ -102,7 +102,7 @@ QString TransactionDesc::toHTML(interfaces::Node& node, interfaces::Wallet& wall
             if (IsValidDestination(address)) {
                 std::string name;
                 isminetype ismine;
-                if (wallet.getAddress(address, &name, &ismine))
+                if (wallet.getAddress(address, &name, &ismine, /* purpose= */ nullptr))
                 {
                     strHTML += "<b>" + tr("From") + ":</b> " + tr("unknown") + "<br>";
                     strHTML += "<b>" + tr("To") + ":</b> ";
@@ -128,7 +128,8 @@ QString TransactionDesc::toHTML(interfaces::Node& node, interfaces::Wallet& wall
         strHTML += "<b>" + tr("To") + ":</b> ";
         CTxDestination dest = DecodeDestination(strAddress);
         std::string name;
-        if (wallet.getAddress(dest, &name) && !name.empty())
+        if (wallet.getAddress(
+                dest, &name, /* is_mine= */ nullptr, /* purpose= */ nullptr) && !name.empty())
             strHTML += GUIUtil::HtmlEscape(name) + " ";
         strHTML += GUIUtil::HtmlEscape(strAddress) + "<br>";
     }
@@ -196,7 +197,8 @@ QString TransactionDesc::toHTML(interfaces::Node& node, interfaces::Wallet& wall
                     {
                         strHTML += "<b>" + tr("To") + ":</b> ";
                         std::string name;
-                        if (wallet.getAddress(address, &name) && !name.empty())
+                        if (wallet.getAddress(
+                                address, &name, /* is_mine= */ nullptr, /* purpose= */ nullptr) && !name.empty())
                             strHTML += GUIUtil::HtmlEscape(name) + " ";
                         strHTML += GUIUtil::HtmlEscape(EncodeDestination(address));
                         if(toSelf == ISMINE_SPENDABLE)
@@ -319,7 +321,7 @@ QString TransactionDesc::toHTML(interfaces::Node& node, interfaces::Wallet& wall
                     if (ExtractDestination(vout.scriptPubKey, address))
                     {
                         std::string name;
-                        if (wallet.getAddress(address, &name) && !name.empty())
+                        if (wallet.getAddress(address, &name, /* is_mine= */ nullptr, /* purpose= */ nullptr) && !name.empty())
                             strHTML += GUIUtil::HtmlEscape(name) + " ";
                         strHTML += QString::fromStdString(EncodeDestination(address));
                     }

src/qt/walletmodel.cpp

@@ -274,7 +274,8 @@ WalletModel::SendCoinsReturn WalletModel::sendCoins(WalletModelTransaction &tran
             {
                 // Check if we have a new address or an updated label
                 std::string name;
-                if (!m_wallet->getAddress(dest, &name))
+                if (!m_wallet->getAddress(
+                     dest, &name, /* is_mine= */ nullptr, /* purpose= */ nullptr))
                 {
                     m_wallet->setAddressBook(dest, strLabel, "send");
                 }