Add support for gzip compressed databases.

CMakeLists.txt

@@ -49,6 +49,8 @@ find_package(Automoc4 REQUIRED)
 
 find_package(Libgcrypt REQUIRED)
 
+find_package(ZLIB REQUIRED)
+
 add_subdirectory(src)
 if( WITH_TESTS )
     add_subdirectory(tests)

COPYING

@@ -30,6 +30,10 @@ Files: share/icons/entries/*.png
 Copyright: 2003-2004, David Vignoni <[email protected]>
 License: LGPL-2.1
 
+Files: src/streams/qtiocompressor.*, src/streams/QtIOCompressor
+Copyright: 2009, Nokia Corporation and/or its subsidiary(-ies)
+License: LGPL-2.1 or GPL-3
+
 Files: tests/modeltest.*
 Copyright: 2007, Trolltech ASA
 License: GPL-2

LICENSE.NOKIA-LGPL-EXCEPTION

@@ -0,0 +1,23 @@
+Nokia Qt LGPL Exception version 1.1
+
+As an additional permission to the GNU Lesser General Public License
+version 2.1, the object code form of a "work that uses the Library"
+may incorporate material from a header file that is part of the
+Library.  You may distribute such object code under terms of your
+choice, provided that:
+(i) the header files of the Library have not been modified; and
+(ii) the incorporated material is limited to numerical parameters,
+data structure layouts, accessors, macros, inline functions and
+templates; and
+(iii) you comply with the terms of Section 6 of the GNU
+Lesser General Public License version 2.1.
+
+Moreover, you may apply this exception to a modified version of the
+Library, provided that such modification does not involve copying
+material from the Library into the modified Library?s header files
+unless such material is limited to (i) numerical parameters; (ii) data
+structure layouts; (iii) accessors; and (iv) small macros, templates
+and inline functions of five lines or less in length.
+
+Furthermore, you are not required to apply this additional permission
+to a modified version of the Library.

src/CMakeLists.txt

@@ -43,6 +43,7 @@ set(keepassx_SOURCES
     keys/PasswordKey.cpp
     streams/HashedBlockStream.cpp
     streams/LayeredStream.cpp
+    streams/qtiocompressor.cpp
     streams/SymmetricCipherStream.cpp
 )
 
@@ -55,4 +56,4 @@ qt4_wrap_ui(keepassx_SOURCES ${keepassx_FORMS})
 automoc4_add_library( keepassx_core STATIC ${keepassx_SOURCES} )
 
 automoc4_add_executable( ${PROGNAME} WIN32 MACOSX_BUNDLE main.cpp )
-target_link_libraries( ${PROGNAME} keepassx_core ${QT_QTCORE_LIBRARY} ${QT_QTGUI_LIBRARY} ${LIBGCRYPT_LIBS} )
+target_link_libraries( ${PROGNAME} keepassx_core ${QT_QTCORE_LIBRARY} ${QT_QTGUI_LIBRARY} ${LIBGCRYPT_LIBS} ${ZLIB_LIBRARIES} )

src/format/KeePass2Reader.cpp

@@ -21,10 +21,10 @@
 #include <QtCore/QFile>
 #include <QtCore/QIODevice>
 
-#include "KeePass2.h"
 #include "KeePass2XmlReader.h"
 #include "crypto/CryptoHash.h"
 #include "streams/HashedBlockStream.h"
+#include "streams/QtIOCompressor"
 #include "streams/SymmetricCipherStream.h"
 
 const QSysInfo::Endian KeePass2Reader::BYTEORDER = QSysInfo::LittleEndian;
@@ -80,8 +80,22 @@ Database* KeePass2Reader::readDatabase(QIODevice* device, const CompositeKey& ke
     HashedBlockStream hashedStream(&cipherStream);
     hashedStream.open(QIODevice::ReadOnly);
 
+    QIODevice* xmlDevice;
+    QScopedPointer<QtIOCompressor> ioCompressor;
+
+    if (m_compression == KeePass2::CompressionNone) {
+        xmlDevice = &hashedStream;
+    }
+    else {
+        ioCompressor.reset(new QtIOCompressor(&hashedStream));
+        ioCompressor->setStreamFormat(QtIOCompressor::GzipFormat);
+        ioCompressor->open(QIODevice::ReadOnly);
+        xmlDevice = ioCompressor.data();
+    }
+
     KeePass2XmlReader xmlReader;
-    Database* db = xmlReader.readDatabase(&hashedStream);
+    Database* db = xmlReader.readDatabase(xmlDevice);
+    // TODO forward error messages from xmlReader
     return db;
 }
 
@@ -208,7 +222,7 @@ void KeePass2Reader::setCompressionFlags(const QByteArray& data)
             raiseError("");
         }
         else {
-            m_compression = id;
+            m_compression = static_cast<KeePass2::CompressionAlgorithm>(id);
         }
     }
 }

src/format/KeePass2Reader.h

@@ -23,6 +23,7 @@
 #include "core/Endian.h"
 #include "core/Uuid.h"
 #include "keys/CompositeKey.h"
+#include "format/KeePass2.h"
 
 class Database;
 
@@ -59,7 +60,7 @@ class KeePass2Reader
     bool m_headerEnd;
 
     Uuid m_cipher;
-    int m_compression;
+    KeePass2::CompressionAlgorithm m_compression;
     QByteArray m_masterSeed;
     QByteArray m_transformSeed;
     quint64 m_transformRounds;

src/streams/QtIOCompressor

@@ -0,0 +1 @@
+#include "qtiocompressor.h"