Show I2P peer addresses

PR #18845.

src/base/bittorrent/peerinfo.cpp

@@ -1,6 +1,6 @@
 /*
  * Bittorrent Client using Qt and libtorrent.
- * Copyright (C) 2015-2022  Vladimir Golovnev <glassez@yandex.ru>
+ * Copyright (C) 2015-2023  Vladimir Golovnev <glassez@yandex.ru>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -33,6 +33,7 @@
 #include "base/bittorrent/ltqbitarray.h"
 #include "base/net/geoipmanager.h"
 #include "base/unicodestrings.h"
+#include "base/utils/bytearray.h"
 #include "peeraddress.h"
 
 using namespace BitTorrent;
@@ -168,6 +169,9 @@ bool PeerInfo::isPlaintextEncrypted() const
 
 PeerAddress PeerInfo::address() const
 {
+    if (useI2PSocket())
+        return {};
+
     // fast path for platforms which boost.asio internal struct maps to `sockaddr`
     return {QHostAddress(m_nativeInfo.ip.data()), m_nativeInfo.ip.port()};
     // slow path for the others
@@ -175,6 +179,23 @@ PeerAddress PeerInfo::address() const
     //    , m_nativeInfo.ip.port()};
 }
 
+QString PeerInfo::I2PAddress() const
+{
+    if (!useI2PSocket())
+        return {};
+
+#ifdef QBT_USES_LIBTORRENT2
+    if (m_I2PAddress.isEmpty())
+    {
+        const lt::sha256_hash destHash = m_nativeInfo.i2p_destination();
+        const QByteArray base32Dest = Utils::ByteArray::toBase32({destHash.data(), destHash.size()}).replace('=', "").toLower();
+        m_I2PAddress = QString::fromLatin1(base32Dest) + u".b32.i2p";
+    }
+#endif
+
+    return m_I2PAddress;
+}
+
 QString PeerInfo::client() const
 {
     return QString::fromStdString(m_nativeInfo.client);

src/base/bittorrent/peerinfo.h

@@ -1,6 +1,6 @@
 /*
  * Bittorrent Client using Qt and libtorrent.
- * Copyright (C) 2015-2022  Vladimir Golovnev <glassez@yandex.ru>
+ * Copyright (C) 2015-2023  Vladimir Golovnev <glassez@yandex.ru>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -76,6 +76,7 @@ namespace BitTorrent
         bool isPlaintextEncrypted() const;
 
         PeerAddress address() const;
+        QString I2PAddress() const;
         QString client() const;
         QString peerIdClient() const;
         qreal progress() const;
@@ -101,5 +102,6 @@ namespace BitTorrent
         QString m_flagsDescription;
 
         mutable QString m_country;
+        mutable QString m_I2PAddress;
     };
 }

src/base/utils/bytearray.cpp

@@ -1,5 +1,6 @@
 /*
  * Bittorrent Client using Qt and libtorrent.
+ * Copyright (C) 2023  Vladimir Golovnev <glassez@yandex.ru>
  * Copyright (C) 2018  Mike Tzou (Chocobo1)
  *
  * This program is free software; you can redistribute it and/or
@@ -68,3 +69,45 @@ const QByteArray Utils::ByteArray::midView(const QByteArray &in, const int pos,
             : len;
     return QByteArray::fromRawData(in.constData() + pos, validLen);
 }
+
+QByteArray Utils::ByteArray::toBase32(const QByteArray &in)
+{
+    const char alphabet[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ234567";
+    const char padchar = '=';
+
+    const qsizetype inSize = in.size();
+
+    auto tmp = QByteArray((inSize + 4) / 5 * 8, Qt::Uninitialized);
+    qsizetype inIndex = 0;
+    char *out = tmp.data();
+    while (inIndex < inSize)
+    {
+        // encode 5 bytes at a time
+        qsizetype inPadLen = 5;
+        int64_t chunk = 0;
+        while (inPadLen > 0)
+        {
+            chunk |= static_cast<int64_t>(static_cast<uchar>(in.data()[inIndex++])) << (--inPadLen * 8);
+            if (inIndex == inSize)
+                break;
+        }
+
+        const int outCharCounts[] = {8, 7, 5, 4, 2};
+        for (int i = 7; i >= 0; --i)
+        {
+            if (i >= (8 - outCharCounts[inPadLen]))
+            {
+                const int shift = (i * 5);
+                const int64_t mask = static_cast<int64_t>(0x1f) << shift;
+                const int charIndex = (chunk & mask) >> shift;
+                *out++ = alphabet[charIndex];
+            }
+            else
+            {
+                *out++ = padchar;
+            }
+        }
+    }
+
+    return tmp;
+}

src/base/utils/bytearray.h

@@ -1,5 +1,6 @@
 /*
  * Bittorrent Client using Qt and libtorrent.
+ * Copyright (C) 2023  Vladimir Golovnev <glassez@yandex.ru>
  * Copyright (C) 2018  Mike Tzou (Chocobo1)
  *
  * This program is free software; you can redistribute it and/or
@@ -41,4 +42,6 @@ namespace Utils::ByteArray
     // Mimic QByteArray::mid(pos, len) but instead of returning a full-copy,
     // we only return a partial view
     const QByteArray midView(const QByteArray &in, int pos, int len = -1);
+
+    QByteArray toBase32(const QByteArray &in);
 }

src/gui/properties/peerlistwidget.cpp

@@ -121,7 +121,7 @@ PeerListWidget::PeerListWidget(PropertiesWidget *parent)
     // List Model
     m_listModel = new QStandardItemModel(0, PeerListColumns::COL_COUNT, this);
     m_listModel->setHeaderData(PeerListColumns::COUNTRY, Qt::Horizontal, tr("Country/Region")); // Country flag column
-    m_listModel->setHeaderData(PeerListColumns::IP, Qt::Horizontal, tr("IP"));
+    m_listModel->setHeaderData(PeerListColumns::IP, Qt::Horizontal, tr("IP/Address"));
     m_listModel->setHeaderData(PeerListColumns::PORT, Qt::Horizontal, tr("Port"));
     m_listModel->setHeaderData(PeerListColumns::FLAGS, Qt::Horizontal, tr("Flags"));
     m_listModel->setHeaderData(PeerListColumns::CONNECTION, Qt::Horizontal, tr("Connection"));
@@ -434,9 +434,6 @@ void PeerListWidget::loadPeers(const BitTorrent::Torrent *torrent)
         const bool hideZeroValues = Preferences::instance()->getHideZeroValues();
         for (const BitTorrent::PeerInfo &peer : peers)
         {
-            if (peer.address().ip.isNull())
-                continue;
-
             const PeerEndpoint peerEndpoint {peer.address(), peer.connectionType()};
 
             auto itemIter = m_peerItems.find(peerEndpoint);
@@ -448,7 +445,7 @@ void PeerListWidget::loadPeers(const BitTorrent::Torrent *torrent)
 
                 const bool useI2PSocket = peer.useI2PSocket();
 
-                const QString peerIPString = useI2PSocket ? tr("N/A") : peerEndpoint.address.ip.toString();
+                const QString peerIPString = useI2PSocket ? peer.I2PAddress() : peerEndpoint.address.ip.toString();
                 setModelData(m_listModel, row, PeerListColumns::IP, peerIPString, peerIPString, {}, peerIPString);
 
                 const QString peerIPHiddenString = useI2PSocket ? QString() : peerEndpoint.address.ip.toString();

test/CMakeLists.txt

@@ -15,6 +15,7 @@ set(testFiles
     testorderedset.cpp
     testpath.cpp
     testutilscompare.cpp
+    testutilsbytearray.cpp
     testutilsgzip.cpp
     testutilsstring.cpp
     testutilsversion.cpp

test/testutilsbytearray.cpp

@@ -0,0 +1,54 @@
+/*
+ * Bittorrent Client using Qt and libtorrent.
+ * Copyright (C) 2023  Vladimir Golovnev <glassez@yandex.ru>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * In addition, as a special exception, the copyright holders give permission to
+ * link this program with the OpenSSL project's "OpenSSL" library (or with
+ * modified versions of it that use the same license as the "OpenSSL" library),
+ * and distribute the linked executables. You must obey the GNU General Public
+ * License in all respects for all of the code used other than "OpenSSL".  If you
+ * modify file(s), you may extend this exception to your version of the file(s),
+ * but you are not obligated to do so. If you do not wish to do so, delete this
+ * exception statement from your version.
+ */
+
+#include <QTest>
+
+#include "base/global.h"
+#include "base/utils/bytearray.h"
+
+class TestUtilsByteArray final : public QObject
+{
+    Q_OBJECT
+    Q_DISABLE_COPY_MOVE(TestUtilsByteArray)
+
+public:
+    TestUtilsByteArray() = default;
+
+private slots:
+    void testBase32Encode() const
+    {
+        QCOMPARE(Utils::ByteArray::toBase32(""), "");
+        QCOMPARE(Utils::ByteArray::toBase32("0123456789"), "GAYTEMZUGU3DOOBZ");
+        QCOMPARE(Utils::ByteArray::toBase32("ABCDE"), "IFBEGRCF");
+        QCOMPARE(Utils::ByteArray::toBase32("0000000000"), "GAYDAMBQGAYDAMBQ");
+        QCOMPARE(Utils::ByteArray::toBase32("1"), "GE======");
+    }
+};
+
+QTEST_APPLESS_MAIN(TestUtilsByteArray)
+#include "testutilsbytearray.moc"