'--verify-update', shasum support, OpenPGP signatures verification

src/qt/updater.h

@@ -0,0 +1,55 @@
+// Copyright (c) 2020, 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.
+
+#pragma once
+
+#include <QPair>
+
+#include <openpgp/openpgp.h>
+
+class Updater
+{
+public:
+    Updater();
+
+    QPair<QString, QString> verifySignaturesAndHashSum(
+        const QByteArray &armoredSignedHashes,
+        const QByteArray &secondDetachedSignature,
+        const QString &binaryFilename,
+        const void *binaryData,
+        size_t binarySize) const;
+
+private:
+    QByteArray getHash(const void *data, size_t size) const;
+    QString verifySignature(const QByteArray &armoredSignedMessage, QString &signer) const;
+    QString verifySignature(const epee::span<const uint8_t> data, const openpgp::signature_rsa &signature) const;
+    QByteArray parseShasumOutput(const QString &message, const QString &filename) const;
+
+private:
+    std::vector<openpgp::public_key_rsa> m_maintainers;
+};