Merge pull request #143 from louib/feature/merge_databases_script

Feature : merge databases program

utils/CMakeLists.txt

@@ -25,6 +25,13 @@ target_link_libraries(kdbx-extract
                       ${GCRYPT_LIBRARIES}
                       ${ZLIB_LIBRARIES})
 
+add_executable(kdbx-merge kdbx-merge.cpp)
+target_link_libraries(kdbx-merge
+                      keepassx_core
+                      Qt5::Core
+                      ${GCRYPT_LIBRARIES}
+                      ${ZLIB_LIBRARIES})
+
 
 add_executable(entropy-meter entropy-meter.cpp)
 target_link_libraries(entropy-meter zxcvbn)

utils/kdbx-merge.cpp

@@ -0,0 +1,163 @@
+/*
+ *  Copyright (C) 2010 Felix Geyer <debfx@fobos.de>
+ *
+ *  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 or (at your option)
+ *  version 3 of the License.
+ *
+ *  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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdio.h>
+
+#include <QCommandLineParser>
+#include <QCoreApplication>
+#include <QFile>
+#include <QSaveFile>
+#include <QStringList>
+#include <QTextStream>
+
+#include "core/Database.h"
+#include "crypto/Crypto.h"
+#include "format/KeePass2Reader.h"
+#include "format/KeePass2Writer.h"
+#include "keys/CompositeKey.h"
+#include "keys/FileKey.h"
+#include "keys/PasswordKey.h"
+
+/*
+ * Read a key from a line of input.
+ * If the line references a valid file
+ * path, the key is loaded from file.
+ */
+CompositeKey readKeyFromLine(QString line)
+{
+
+  CompositeKey key;
+  if (QFile::exists(line)) {
+      FileKey fileKey;
+      fileKey.load(line);
+      key.addKey(fileKey);
+  }
+  else {
+      PasswordKey password;
+      password.setPassword(line);
+      key.addKey(password);
+  }
+  return key;
+
+}
+
+int main(int argc, char **argv)
+{
+
+    QCoreApplication app(argc, argv);
+
+    QCommandLineParser parser;
+    parser.setApplicationDescription(QCoreApplication::translate("main", "Merge 2 KeePassXC database files."));
+    parser.addPositionalArgument("database1", QCoreApplication::translate("main", "path of the database to merge into."));
+    parser.addPositionalArgument("database2", QCoreApplication::translate("main", "path of the database to merge from."));
+
+    QCommandLineOption samePasswordOption(QStringList() << "s" << "same-password",
+                                          QCoreApplication::translate("main", "use the same password for both database files."));
+
+    parser.addHelpOption();
+    parser.addOption(samePasswordOption);
+    parser.process(app);
+
+    const QStringList args = parser.positionalArguments();
+    if (args.size() != 2) {
+        parser.showHelp();
+        return 1;
+    }
+
+    if (!Crypto::init()) {
+        qFatal("Fatal error while testing the cryptographic functions:\n%s", qPrintable(Crypto::errorString()));
+    }
+
+    static QTextStream inputTextStream(stdin, QIODevice::ReadOnly);
+
+    QString line1 = inputTextStream.readLine();
+    CompositeKey key1 = readKeyFromLine(line1);
+
+    CompositeKey key2;
+    if (parser.isSet("same-password")) {
+      key2 = *key1.clone();
+    }
+    else {
+      QString line2 = inputTextStream.readLine();
+      key2 = readKeyFromLine(line2);
+    }
+
+
+    QString databaseFilename1 = args.at(0);
+    QFile dbFile1(databaseFilename1);
+    if (!dbFile1.exists()) {
+        qCritical("File %s does not exist.", qPrintable(databaseFilename1));
+        return 1;
+    }
+    if (!dbFile1.open(QIODevice::ReadOnly)) {
+        qCritical("Unable to open file %s.", qPrintable(databaseFilename1));
+        return 1;
+    }
+
+    KeePass2Reader reader1;
+    Database* db1 = reader1.readDatabase(&dbFile1, key1);
+
+    if (reader1.hasError()) {
+        qCritical("Error while parsing the database:\n%s\n", qPrintable(reader1.errorString()));
+        return 1;
+    }
+
+
+    QString databaseFilename2 = args.at(1);
+    QFile dbFile2(databaseFilename2);
+    if (!dbFile2.exists()) {
+        qCritical("File %s does not exist.", qPrintable(databaseFilename2));
+        return 1;
+    }
+    if (!dbFile2.open(QIODevice::ReadOnly)) {
+        qCritical("Unable to open file %s.", qPrintable(databaseFilename2));
+        return 1;
+    }
+
+    KeePass2Reader reader2;
+    Database* db2 = reader2.readDatabase(&dbFile2, key2);
+
+    if (reader2.hasError()) {
+        qCritical("Error while parsing the database:\n%s\n", qPrintable(reader2.errorString()));
+        return 1;
+    }
+
+    db1->merge(db2);
+
+    QSaveFile saveFile(databaseFilename1);
+    if (!saveFile.open(QIODevice::WriteOnly)) {
+        qCritical("Unable to open file %s for writing.", qPrintable(databaseFilename1));
+        return 1;
+    }
+
+    KeePass2Writer writer;
+    writer.writeDatabase(&saveFile, db1);
+
+    if (writer.hasError()) {
+        qCritical("Error while updating the database:\n%s\n", qPrintable(writer.errorString()));
+        return 1;
+    }
+
+    if (!saveFile.commit()) {
+        qCritical("Error while updating the database:\n%s\n", qPrintable(writer.errorString()));
+        return 0;
+    }
+
+    qDebug("Successfully merged the database files.\n");
+    return 1;
+
+}