Add a shared ringdb management page - rings and blackballed outputs

LeftPanel.qml

@@ -48,6 +48,7 @@ Rectangle {
     signal transferClicked()
     signal receiveClicked()
     signal txkeyClicked()
+    signal sharedringdbClicked()
     signal settingsClicked()
     signal addressBookClicked()
     signal miningClicked()
@@ -63,6 +64,7 @@ Rectangle {
         else if(pos === "AddressBook") menuColumn.previousButton = addressBookButton
         else if(pos === "Mining") menuColumn.previousButton = miningButton
         else if(pos === "TxKey")  menuColumn.previousButton = txkeyButton
+        else if(pos === "SharedRingDB")  menuColumn.previousButton = sharedringdbButton
         else if(pos === "Sign") menuColumn.previousButton = signButton
         else if(pos === "Settings") menuColumn.previousButton = settingsButton
         else if(pos === "Advanced") menuColumn.previousButton = advancedButton
@@ -456,6 +458,30 @@ Rectangle {
                 color: "#505050"
                 height: 1
             }
+            // ------------- Shared RingDB tab ---------------
+            MenuButton {
+                id: sharedringdbButton
+                anchors.left: parent.left
+                anchors.right: parent.right
+                text: qsTr("Shared RingDB") + translationManager.emptyString
+                symbol: qsTr("S") + translationManager.emptyString
+                dotColor: "#FFD781"
+                under: advancedButton
+                onClicked: {
+                    parent.previousButton.checked = false
+                    parent.previousButton = sharedringdbButton
+                    panel.sharedringdbClicked()
+                }
+            }
+            Rectangle {
+                visible: sharedringdbButton.present
+                anchors.left: parent.left
+                anchors.right: parent.right
+                anchors.leftMargin: 16
+                color: "#505050"
+                height: 1
+            }
+
 
             // ------------- Sign/verify tab ---------------
             MenuButton {

MiddlePanel.qml

@@ -54,6 +54,7 @@ Rectangle {
     property Transfer transferView: Transfer { }
     property Receive receiveView: Receive { }
     property TxKey txkeyView: TxKey { }
+    property SharedRingDB sharedringdbView: SharedRingDB { }
     property History historyView: History { }
     property Sign signView: Sign { }
     property Settings settingsView: Settings { }
@@ -117,6 +118,10 @@ Rectangle {
                name: "TxKey"
                PropertyChanges { target: root; currentView: txkeyView }
                PropertyChanges { target: mainFlickable; contentHeight: minHeight  }
+            }, State {
+               name: "SharedRingDB"
+               PropertyChanges { target: root; currentView: sharedringdbView }
+               PropertyChanges { target: mainFlickable; contentHeight: minHeight  }
             }, State {
                 name: "AddressBook"
                 PropertyChanges {  target: root; currentView: addressBookView  }

components/HistoryTable.qml

@@ -39,7 +39,7 @@ ListView {
     property int rowSpacing: 12
     property var addressBookModel: null
 
-    function buildTxDetailsString(tx_id, paymentId, tx_key,tx_note, destinations) {
+    function buildTxDetailsString(tx_id, paymentId, tx_key,tx_note, destinations, rings) {
         var trStart = '<tr><td width="85" style="padding-top:5px"><b>',
             trMiddle = '</b></td><td style="padding-left:10px;padding-top:5px;">',
             trEnd = "</td></tr>";
@@ -50,6 +50,7 @@ ListView {
             + (tx_key ? trStart + qsTr("Tx key:") + trMiddle + tx_key + trEnd : "")
             + (tx_note ? trStart + qsTr("Tx note:") + trMiddle + tx_note  + trEnd : "")
             + (destinations ? trStart + qsTr("Destinations:") + trMiddle + destinations + trEnd : "")
+            + (rings ? trStart + qsTr("Rings:") + trMiddle + rings + trEnd : "")
             + "</table>"
             + translationManager.emptyString;
     }
@@ -103,8 +104,11 @@ ListView {
             onClicked: {
                 var tx_key = currentWallet.getTxKey(hash)
                 var tx_note = currentWallet.getUserNote(hash)
+                var rings = currentWallet.getRings(hash)
+                if (rings)
+                    rings = rings.replace(/\|/g, '\n')
                 informationPopup.title = "Transaction details";
-                informationPopup.content = buildTxDetailsString(hash,paymentId,tx_key,tx_note,destinations);
+                informationPopup.content = buildTxDetailsString(hash,paymentId,tx_key,tx_note,destinations, rings);
                 informationPopup.onCloseCallback = null
                 informationPopup.open();
             }

components/HistoryTableMobile.qml

@@ -38,7 +38,7 @@ ListView {
     property var previousItem
     property var addressBookModel: null
 
-    function buildTxDetailsString(tx_id, paymentId, tx_key,tx_note, destinations) {
+    function buildTxDetailsString(tx_id, paymentId, tx_key,tx_note, destinations, rings) {
         var trStart = '<tr><td width="85" style="padding-top:5px"><b>',
             trMiddle = '</b></td><td style="padding-left:10px;padding-top:5px;">',
             trEnd = "</td></tr>";
@@ -49,6 +49,7 @@ ListView {
             + (tx_key ? trStart + qsTr("Tx key:") + trMiddle + tx_key + trEnd : "")
             + (tx_note ? trStart + qsTr("Tx note:") + trMiddle + tx_note  + trEnd : "")
             + (destinations ? trStart + qsTr("Destinations:") + trMiddle + destinations + trEnd : "")
+            + (rings ? trStart + qsTr("Rings:") + trMiddle + rings + trEnd : "")
             + "</table>"
             + translationManager.emptyString;
     }
@@ -91,9 +92,11 @@ ListView {
             onClicked: {
                 var tx_key = currentWallet.getTxKey(hash)
                 var tx_note = currentWallet.getUserNote(hash)
-
+                var rings = currentWallet.getRings(hash)
+                if (rings)
+                    rings = rings.replace(/\|/g, '\n')
                 informationPopup.title = "Transaction details";
-                informationPopup.text = buildTxDetailsString(hash,paymentId,tx_key,tx_note,destinations);
+                informationPopup.text = buildTxDetailsString(hash,paymentId,tx_key,tx_note,destinations, rings);
                 informationPopup.open();
                 informationPopup.onCloseCallback = null
             }

get_libwallet_api.sh

@@ -230,6 +230,9 @@ eval make -C $MONERO_DIR/build/$BUILD_TYPE/contrib/epee all install
 # install easylogging
 eval make -C $MONERO_DIR/build/$BUILD_TYPE/external/easylogging++ all install
 
+# install lmdb
+eval make -C $MONERO_DIR/build/$BUILD_TYPE/external/db_drivers/liblmdb all install
+
 # Install libunbound
 echo "Installing libunbound..."
 pushd $MONERO_DIR/build/$BUILD_TYPE/external/unbound

main.qml

@@ -100,6 +100,7 @@ ApplicationWindow {
         if(seq === "Ctrl+S") middlePanel.state = "Transfer"
         else if(seq === "Ctrl+R") middlePanel.state = "Receive"
         else if(seq === "Ctrl+K") middlePanel.state = "TxKey"
+        else if(seq === "Ctrl+S") middlePanel.state = "SharedRingDB"
         else if(seq === "Ctrl+H") middlePanel.state = "History"
         else if(seq === "Ctrl+B") middlePanel.state = "AddressBook"
         else if(seq === "Ctrl+M") middlePanel.state = "Mining"
@@ -111,7 +112,8 @@ ApplicationWindow {
             if(middlePanel.state === "Dashboard") middlePanel.state = "Transfer"
             else if(middlePanel.state === "Transfer") middlePanel.state = "Receive"
             else if(middlePanel.state === "Receive") middlePanel.state = "TxKey"
-            else if(middlePanel.state === "TxKey") middlePanel.state = "History"
+            else if(middlePanel.state === "TxKey") middlePanel.state = "SharedRingDB"
+            else if(middlePanel.state === "SharedRingDB") middlePanel.state = "History"
             else if(middlePanel.state === "History") middlePanel.state = "AddressBook"
             else if(middlePanel.state === "AddressBook") middlePanel.state = "Mining"
             else if(middlePanel.state === "Mining") middlePanel.state = "Sign"
@@ -121,7 +123,8 @@ ApplicationWindow {
             if(middlePanel.state === "Settings") middlePanel.state = "Transfer"
             else if(middlePanel.state === "Transfer") middlePanel.state = "Receive"
             else if(middlePanel.state === "Receive") middlePanel.state = "TxKey"
-            else if(middlePanel.state === "TxKey") middlePanel.state = "History"
+            else if(middlePanel.state === "TxKey") middlePanel.state = "SharedRingDB"
+            else if(middlePanel.state === "SharedRingDB") middlePanel.state = "History"
             else if(middlePanel.state === "History") middlePanel.state = "AddressBook"
             else if(middlePanel.state === "AddressBook") middlePanel.state = "Sign"
             else if(middlePanel.state === "Sign") middlePanel.state = "Settings"
@@ -132,7 +135,8 @@ ApplicationWindow {
             else if(middlePanel.state === "Sign") middlePanel.state = "Mining"
             else if(middlePanel.state === "Mining") middlePanel.state = "AddressBook"
             else if(middlePanel.state === "AddressBook") middlePanel.state = "History"
-            else if(middlePanel.state === "History") middlePanel.state = "TxKey"
+            else if(middlePanel.state === "History") middlePanel.state = "SharedRingDB"
+            else if(middlePanel.state === "SharedRingDB") middlePanel.state = "TxKey"
             else if(middlePanel.state === "TxKey") middlePanel.state = "Receive"
             else if(middlePanel.state === "Receive") middlePanel.state = "Transfer"
             else if(middlePanel.state === "Transfer") middlePanel.state = "Dashboard"
@@ -140,7 +144,8 @@ ApplicationWindow {
             if(middlePanel.state === "Settings") middlePanel.state = "Sign"
             else if(middlePanel.state === "Sign") middlePanel.state = "AddressBook"
             else if(middlePanel.state === "AddressBook") middlePanel.state = "History"
-            else if(middlePanel.state === "History") middlePanel.state = "TxKey"
+            else if(middlePanel.state === "History") middlePanel.state = "SharedRingDB"
+            else if(middlePanel.state === "SharedRingDB") middlePanel.state = "TxKey"
             else if(middlePanel.state === "TxKey") middlePanel.state = "Receive"
             else if(middlePanel.state === "Receive") middlePanel.state = "Transfer"
             else if(middlePanel.state === "Transfer") middlePanel.state = "Settings"
@@ -1280,6 +1285,7 @@ ApplicationWindow {
             onTransferClicked: { middlePanel.state = "Transfer"; if(isMobile) hideMenu(); updateBalance(); }
             onReceiveClicked: { middlePanel.state = "Receive"; if(isMobile) hideMenu(); updateBalance(); }
             onTxkeyClicked: { middlePanel.state = "TxKey"; if(isMobile) hideMenu(); updateBalance(); }
+            onSharedringdbClicked: { middlePanel.state = "SharedRingDB"; if(isMobile) hideMenu(); updateBalance(); }
             onHistoryClicked: { middlePanel.state = "History"; if(isMobile) hideMenu(); updateBalance(); }
             onAddressBookClicked: { middlePanel.state = "AddressBook"; if(isMobile) hideMenu(); updateBalance(); }
             onMiningClicked: { middlePanel.state = "Mining"; if(isMobile) hideMenu(); updateBalance(); }

monero-wallet-gui.pro

@@ -102,6 +102,7 @@ ios:arm64 {
 !ios:!android {
 LIBS += -L$$WALLET_ROOT/lib \
         -lwallet_merged \
+        -llmdb \
         -lepee \
         -lunbound \
         -leasylogging \
@@ -111,6 +112,7 @@ android {
     message("Host is Android")
     LIBS += -L$$WALLET_ROOT/lib \
         -lwallet_merged \
+        -llmdb \
         -lepee \
         -lunbound \
         -leasylogging
@@ -129,6 +131,7 @@ ios {
     CONFIG += arm64
     LIBS += -L$$WALLET_ROOT/lib-ios \
         -lwallet_merged \
+        -llmdb \
         -lepee \
         -lunbound \
         -leasylogging

pages/SharedRingDB.qml

@@ -0,0 +1,364 @@
+// Copyright (c) 2018, The Monero Project
+//
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without modification, are
+// permitted provided that the following conditions are met:
+//
+// 1. Redistributions of source code must retain the above copyright notice, this list of
+//    conditions and the following disclaimer.
+//
+// 2. Redistributions in binary form must reproduce the above copyright notice, this list
+//    of conditions and the following disclaimer in the documentation and/or other
+//    materials provided with the distribution.
+//
+// 3. Neither the name of the copyright holder nor the names of its contributors may be
+//    used to endorse or promote products derived from this software without specific
+//    prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+import QtQuick 2.0
+import QtQuick.Controls 1.4
+import QtQuick.Controls.Styles 1.4
+import QtQuick.Layouts 1.1
+import QtQuick.Dialogs 1.2
+
+import "../components"
+import moneroComponents.Clipboard 1.0
+
+Rectangle {
+
+    color: "#F0EEEE"
+
+    Clipboard { id: clipboard }
+
+    function validHex32(s) {
+        if (s.length != 64)
+            return false
+        for (var i = 0; i < s.length; ++i)
+            if ("0123456789abcdefABCDEF".indexOf(s[i]) == -1)
+                return false
+        return true
+    }
+
+    function validRing(str, relative) {
+        var outs = str.split(" ");
+        if (outs.length == 0)
+            return false
+        for (var i = 1; i < outs.length; ++i) {
+            if (relative) {
+                if (outs[i] <= 0)
+                    return false
+            }
+            else {
+                if (outs[i] <= outs[i-1])
+                    return false
+            }
+        }
+        return true
+    }
+
+    /* main layout */
+    ColumnLayout {
+        id: mainLayout
+        anchors.margins: 40
+        anchors.left: parent.left
+        anchors.top: parent.top
+        anchors.right: parent.right
+
+        spacing: 20
+        property int labelWidth: 120
+        property int editWidth: 400
+        property int lineEditFontSize: 12
+
+        MessageDialog {
+            id: sharedRingDBDialog
+            standardButtons: StandardButton.Ok
+        }
+
+        Text {
+            text: qsTr("This page allows you to interact with the shared ring database.<br>" +
+                       "This database is meant for use by Monero wallets as well as wallets from Monero clones which reuse the Monero keys.") + translationManager.emptyString
+            wrapMode: Text.Wrap
+            Layout.fillWidth: true;
+        }
+
+        Text {
+            textFormat: Text.RichText
+            text: "<style type='text/css'>a {text-decoration: none; color: #FF6C3C; font-size: 14px;}</style>" +
+                  "<font size='+2'>" + qsTr("Blackballed outputs") + "</font>" + "<font size='2'> (</font><a href='#'>" + qsTr("help") + "</a><font size='2'>)</font><br>" +
+                  qsTr("This sets which outputs are known to be spent, and thus not to be used as privacy placeholders in ring signatures.<br>") +
+                  qsTr("You should only have to load a file when you want to refresh the list. Manual adding/removing is possible if needed.") + translationManager.emptyString
+            wrapMode: Text.Wrap
+            Layout.fillWidth: true;
+            onLinkActivated: {
+                sharedRingDBDialog.title  = qsTr("Blackballed outputs") + translationManager.emptyString;
+                sharedRingDBDialog.text = qsTr(
+                    "In order to obscure which inputs in a Monero transaction are being spent, a third party should not be able " +
+                    "to tell which inputs in a ring are already known to be spent. Being able to do so would weaken the protection " +
+                    "afforded by ring signatures. If all but one of the inputs are known to be already spent, then the input being " +
+                    "actually spent becomes apparent, thereby nullifying the effect of ring signatures, one of the three main layers " +
+                    "of privacy protection Monero uses.<br>" +
+                    "To help transactions avoid those inputs, a list of known spent ones can be used to avoid using them in new " +
+                    "transactions. Such a list is maintained by the Monero project and is available on the getmonero.org website, " +
+                    "and you can import this list here.<br>" +
+                    "Alternatively, you can scan the blockchain (and the blockchain of key-reusing Monero clones) yourself " +
+                    "using the monero-blockchain-blackball tool to create a list of known spent outputs.<br>"
+                )
+                sharedRingDBDialog.icon = StandardIcon.Information
+                sharedRingDBDialog.open()
+            }
+        }
+
+        RowLayout {
+            id: loadBlackballFileRow
+            anchors.topMargin: 17
+            anchors.left: parent.left
+            anchors.right: parent.right
+
+            FileDialog {
+                id: loadBlackballFileDialog
+                title: qsTr("Please choose a file to load blackballed outputs from") + translationManager.emptyString;
+                folder: "file://"
+                nameFilters: [ "*"]
+
+                onAccepted: {
+                    loadBlackballFileLine.text = walletManager.urlToLocalPath(loadBlackballFileDialog.fileUrl)
+                }
+            }
+
+            StandardButton {
+                id: selectBlackballFileButton
+                anchors.rightMargin: 17 * scaleRatio
+                text: qsTr("Select") + translationManager.emptyString
+                shadowReleasedColor: "#FF4304"
+                shadowPressedColor: "#B32D00"
+                releasedColor: "#FF6C3C"
+                pressedColor: "#FF4304"
+                enabled: true
+                onClicked: {
+                  loadBlackballFileDialog.open()
+                }
+            }
+
+            LineEdit {
+                id: loadBlackballFileLine
+                anchors.left: selectBlackballFileButton.right
+                anchors.right: loadBlackballFileButton.left
+                placeholderText: qsTr("Filename with outputs to blackball") + translationManager.emptyString;
+                readOnly: false
+                Layout.fillWidth: true
+
+                IconButton {
+                    imageSource: "../images/copyToClipboard.png"
+                    onClicked: {
+                        if (loadBlackballFileLine.text.length > 0) {
+                            clipboard.setText(loadBlackballFileLine.text)
+                        }
+                    }
+                }
+            }
+
+            StandardButton {
+                id: loadBlackballFileButton
+                anchors.right: parent.right
+                text: qsTr("Load") + translationManager.emptyString
+                shadowReleasedColor: "#FF4304"
+                shadowPressedColor: "#B32D00"
+                releasedColor: "#FF6C3C"
+                pressedColor: "#FF4304"
+                enabled: !!appWindow.currentWallet
+                onClicked: appWindow.currentWallet.blackballOutputs(walletManager.urlToLocalPath(loadBlackballFileDialog.fileUrl), true)
+            }
+        }
+
+        Label {
+            fontSize: 14
+            text: qsTr("Or manually blackball or unblackball a single output:") + translationManager.emptyString
+            width: mainLayout.labelWidth
+        }
+
+        RowLayout {
+            LineEdit {
+                id: blackballOutputLine
+                fontSize: mainLayout.lineEditFontSize
+                placeholderText: qsTr("Paste output public key") + translationManager.emptyString
+                readOnly: false
+                width: mainLayout.editWidth
+                Layout.fillWidth: true
+
+                IconButton {
+                    imageSource: "../images/copyToClipboard.png"
+                    onClicked: {
+                        if (blackballOutputLine.text.length > 0) {
+                            clipboard.setText(blackballOutputLine.text)
+                        }
+                    }
+                }
+            }
+
+            StandardButton {
+                id: blackballButton
+                text: qsTr("Blackball") + translationManager.emptyString
+                shadowReleasedColor: "#FF4304"
+                shadowPressedColor: "#B32D00"
+                releasedColor: "#FF6C3C"
+                pressedColor: "#FF4304"
+                enabled: !!appWindow.currentWallet && validHex32(blackballOutputLine.text)
+                onClicked: appWindow.currentWallet.blackballOutput(blackballOutputLine.text)
+            }
+
+            StandardButton {
+                id: unblackballButton
+                anchors.right: parent.right
+                text: qsTr("Unblackball") + translationManager.emptyString
+                shadowReleasedColor: "#FF4304"
+                shadowPressedColor: "#B32D00"
+                releasedColor: "#FF6C3C"
+                pressedColor: "#FF4304"
+                enabled: !!appWindow.currentWallet && validHex32(blackballOutputLine.text)
+                onClicked: appWindow.currentWallet.unblackballOutput(blackballOutputLine.text)
+            }
+        }
+
+        Text {
+            textFormat: Text.RichText
+            text: "<style type='text/css'>a {text-decoration: none; color: #FF6C3C; font-size: 14px;}</style>" +
+                  "<font size='+2'>" + qsTr("Rings") + "</font>" + "<font size='2'> (</font><a href='#'>" + qsTr("help") + "</a><font size='2'>)</font><br>" +
+                  qsTr("This records rings used by outputs spent on Monero on a key reusing chain, so that the same ring may be reused to avoid privacy issues.") + translationManager.emptyString
+            wrapMode: Text.Wrap
+            Layout.fillWidth: true;
+            onLinkActivated: {
+                sharedRingDBDialog.title  = qsTr("Rings") + translationManager.emptyString;
+                sharedRingDBDialog.text = qsTr(
+                    "In order to avoid nullifying the protection afforded by Monero's ring signatures, an output should not " +
+                    "be spent with different rings on different blockchains. While this is normally not a concern, it can become one " +
+                    "when a key-reusing Monero clone allows you do spend existing outputs. In this case, you need to ensure this " +
+                    "existing outputs uses the same ring on both chains.<br>" +
+                    "This will be done automatically by Monero and any key-reusing software which is not trying to actively strip " +
+                    "you of your privacy.<br>" +
+                    "If you are using a key-reusing Monero clone too, and this clone does not include this protection, you can still " +
+                    "ensure your transactions are protected by spending on the clone first, then manually adding the ring on this page, " +
+                    "which allows you to then spend your Monero safely.<br>" +
+                    "If you do not use a key-reusing Monero clone without these safety features, then you do not need to do anything " +
+                    "as it is all automated.<br>"
+                )
+                sharedRingDBDialog.icon = StandardIcon.Information
+                sharedRingDBDialog.open()
+            }
+        }
+
+        RowLayout {
+            LineEdit {
+                id: keyImageLine
+                fontSize: mainLayout.lineEditFontSize
+                placeholderText: qsTr("Paste key image") + translationManager.emptyString
+                readOnly: false
+                width: mainLayout.editWidth
+                Layout.fillWidth: true
+
+                IconButton {
+                    imageSource: "../images/copyToClipboard.png"
+                    onClicked: {
+                        if (keyImageLine.text.length > 0) {
+                            clipboard.setText(keyImageLine.text)
+                        }
+                    }
+                }
+            }
+        }
+
+        RowLayout {
+            StandardButton {
+                id: getRingButton
+                text: qsTr("Get Ring") + translationManager.emptyString
+                shadowReleasedColor: "#FF4304"
+                shadowPressedColor: "#B32D00"
+                releasedColor: "#FF6C3C"
+                pressedColor: "#FF4304"
+                enabled: !!appWindow.currentWallet && validHex32(keyImageLine.text)
+                onClicked: {
+                    var ring = appWindow.currentWallet.getRing(keyImageLine.text)
+                    if (ring === "")
+                    {
+                        getRingLine.text = qsTr("No ring found");
+                    }
+                    else
+                    {
+                        getRingLine.text = ring;
+                    }
+                }
+            }
+            LineEdit {
+                id: getRingLine
+                fontSize: mainLayout.lineEditFontSize
+                placeholderText: qsTr("") + translationManager.emptyString
+                readOnly: true
+                width: mainLayout.editWidth
+                Layout.fillWidth: true
+
+                IconButton {
+                    imageSource: "../images/copyToClipboard.png"
+                    onClicked: {
+                        if (getRingLine.text.length > 0) {
+                            clipboard.setText(getRingLine.text)
+                        }
+                    }
+                }
+            }
+        }
+
+        RowLayout {
+            CheckBox {
+                id: setRingRelative
+                checked: true
+                text: qsTr("Relative") + translationManager.emptyString
+                checkedIcon: "../images/checkedVioletIcon.png"
+                uncheckedIcon: "../images/uncheckedIcon.png"
+            }
+            LineEdit {
+                id: setRingLine
+                fontSize: mainLayout.lineEditFontSize
+                placeholderText: qsTr("") + translationManager.emptyString
+                readOnly: false
+                width: mainLayout.editWidth
+
+                IconButton {
+                    imageSource: "../images/copyToClipboard.png"
+                    onClicked: {
+                        if (getRingLine.text.length > 0) {
+                            clipboard.setText(getRingLine.text)
+                        }
+                    }
+                }
+            }
+            StandardButton {
+                id: setRingButton
+                text: qsTr("Set Ring") + translationManager.emptyString
+                shadowReleasedColor: "#FF4304"
+                shadowPressedColor: "#B32D00"
+                releasedColor: "#FF6C3C"
+                pressedColor: "#FF4304"
+                enabled: !!appWindow.currentWallet && validHex32(keyImageLine.text) && validRing(setRingLine.text.trim(), setRingRelative.checked)
+                onClicked: {
+                    var outs = setRingLine.text.trim()
+                    appWindow.currentWallet.setRing(keyImageLine.text, outs, setRingRelative.checked)
+                }
+            }
+        }
+    }
+
+    function onPageCompleted() {
+        console.log("RingDB page loaded");
+    }
+
+}

qml.qrc

@@ -140,6 +140,7 @@
         <file>wizard/utils.js</file>
         <file>pages/Receive.qml</file>
         <file>pages/TxKey.qml</file>
+        <file>pages/SharedRingDB.qml</file>
         <file>components/IconButton.qml</file>
         <file>components/PasswordDialog.qml</file>
         <file>components/NewPasswordDialog.qml</file>

src/libwalletqt/Wallet.cpp

@@ -733,6 +733,102 @@ QString Wallet::getWalletLogPath() const
 #endif
 }
 
+bool Wallet::blackballOutput(const QString &pubkey)
+{
+    QList<QString> list;
+    list.push_back(pubkey);
+    return blackballOutputs(list, true);
+}
+
+bool Wallet::blackballOutputs(const QList<QString> &pubkeys, bool add)
+{
+    std::vector<std::string> std_pubkeys;
+    foreach (const QString &pubkey, pubkeys) {
+        std_pubkeys.push_back(pubkey.toStdString());
+    }
+    return m_walletImpl->blackballOutputs(std_pubkeys, add);
+}
+
+bool Wallet::blackballOutputs(const QString &filename, bool add)
+{
+    QFile file(filename);
+
+    try {
+        if (!file.open(QIODevice::ReadOnly))
+            return false;
+        QList<QString> outputs;
+        QTextStream in(&file);
+        while (!in.atEnd()) {
+            outputs.push_back(in.readLine());
+        }
+        file.close();
+        return blackballOutputs(outputs, add);
+    }
+    catch (const std::exception &e) {
+        file.close();
+        return false;
+    }
+}
+
+bool Wallet::unblackballOutput(const QString &pubkey)
+{
+    return m_walletImpl->unblackballOutput(pubkey.toStdString());
+}
+
+QString Wallet::getRing(const QString &key_image)
+{
+    std::vector<uint64_t> cring;
+    if (!m_walletImpl->getRing(key_image.toStdString(), cring))
+        return "";
+    QString ring = "";
+    for (uint64_t out: cring)
+    {
+        if (!ring.isEmpty())
+            ring = ring + " ";
+	QString s;
+	s.setNum(out);
+        ring = ring + s;
+    }
+    return ring;
+}
+
+QString Wallet::getRings(const QString &txid)
+{
+    std::vector<std::pair<std::string, std::vector<uint64_t>>> crings;
+    if (!m_walletImpl->getRings(txid.toStdString(), crings))
+        return "";
+    QString ring = "";
+    for (const auto &cring: crings)
+    {
+        if (!ring.isEmpty())
+            ring = ring + "|";
+        ring = ring + QString::fromStdString(cring.first) + " absolute";
+        for (uint64_t out: cring.second)
+        {
+            ring = ring + " ";
+	    QString s;
+	    s.setNum(out);
+            ring = ring + s;
+        }
+    }
+    return ring;
+}
+
+bool Wallet::setRing(const QString &key_image, const QString &ring, bool relative)
+{
+    std::vector<uint64_t> cring;
+    QStringList strOuts = ring.split(" ");
+    foreach(QString str, strOuts)
+    {
+        uint64_t out;
+	bool ok;
+	out = str.toULong(&ok);
+	if (ok)
+            cring.push_back(out);
+    }
+    return m_walletImpl->setRing(key_image.toStdString(), cring, relative);
+}
+
 Wallet::Wallet(Monero::Wallet *w, QObject *parent)
     : QObject(parent)
     , m_walletImpl(w)

src/libwalletqt/Wallet.h

@@ -4,6 +4,7 @@
 #include <QObject>
 #include <QTime>
 #include <QMutex>
+#include <QList>
 #include <QtConcurrent/QtConcurrent>
 
 #include "wallet/api/wallet2_api.h" // we need to have an access to the Monero::Wallet::Status enum here;
@@ -276,6 +277,17 @@ public:
     QString getDaemonLogPath() const;
     QString getWalletLogPath() const;
 
+    // Blackalled outputs
+    Q_INVOKABLE bool blackballOutput(const QString &pubkey);
+    Q_INVOKABLE bool blackballOutputs(const QList<QString> &pubkeys, bool add);
+    Q_INVOKABLE bool blackballOutputs(const QString &filename, bool add);
+    Q_INVOKABLE bool unblackballOutput(const QString &pubkey);
+
+    // Rings
+    Q_INVOKABLE QString getRing(const QString &key_image);
+    Q_INVOKABLE QString getRings(const QString &txid);
+    Q_INVOKABLE bool setRing(const QString &key_image, const QString &ring, bool relative);
+
     // TODO: setListenter() when it implemented in API
 signals:
     // emitted on every event happened with wallet