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Implemented loading of Keepass 1 (kdb) files. First test passed!

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This commit is contained in:
Philipp Crocoll
2014-01-26 03:51:55 -08:00
parent 12dbe597ce
commit 8bbd18d3f8
15 changed files with 210 additions and 74 deletions
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9
src/Kp2aBusinessLogic/Kp2aBusinessLogic.csproj
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@@ -20,7 +20,7 @@
<DebugType>full</DebugType>
<Optimize>false</Optimize>
<OutputPath>bin\Debug\</OutputPath>
<DefineConstants>TRACE;DEBUG;EXCLUDE_TWOFISH;EXCLUDE_KEYBOARD;EXCLUDE_KEYTRANSFORM;INCLUDE_FILECHOOSER;INCLUDE_JAVAFILESTORAGE</DefineConstants>
<DefineConstants>TRACE;DEBUG;EXCLUDE_TWOFISH;EXCLUDE_KEYBOARD;EXCLUDE_KEYTRANSFORM;EXCLUDE_FILECHOOSER;EXCLUDE_JAVAFILESTORAGE</DefineConstants>
<ErrorReport>prompt</ErrorReport>
<WarningLevel>4</WarningLevel>
</PropertyGroup>
@@ -55,6 +55,9 @@
<Compile Include="database\CheckDatabaseForChanges.cs" />
<Compile Include="database\edit\EditGroup.cs" />
<Compile Include="database\edit\MoveElement.cs" />
<Compile Include="database\DatabaseV1.cs" />
<Compile Include="database\KdbDatabaseLoader.cs" />
<Compile Include="database\KdbxDatabaseLoader.cs" />
<Compile Include="database\SynchronizeCachedDatabase.cs" />
<Compile Include="Io\BuiltInFileStorage.cs" />
<Compile Include="Io\CachingFileStorage.cs" />
@@ -112,6 +115,10 @@
<Project>{545b4a6b-8bba-4fbe-92fc-4ac060122a54}</Project>
<Name>KeePassLib2Android</Name>
</ProjectReference>
<ProjectReference Include="..\KP2AKdbLibraryBinding\KP2AKdbLibraryBinding.csproj">
<Project>{70d3844a-d9fa-4a64-b205-a84c6a822196}</Project>
<Name>KP2AKdbLibraryBinding</Name>
</ProjectReference>
</ItemGroup>
<Import Project="$(MSBuildExtensionsPath)\Xamarin\Android\Xamarin.Android.CSharp.targets" />
<!-- To modify your build process, add your task inside one of the targets below and uncomment it.

7
src/Kp2aBusinessLogic/database/Database.cs
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@@ -112,8 +112,15 @@ namespace keepass2android
Loaded = true;
KpDatabase = pwDatabase;
SearchHelper = new SearchDbHelper(app);
CanWrite = databaseLoader.CanWrite;
}
/// <summary>
/// Indicates whether it is possible to make changes to this database
/// </summary>
public bool CanWrite { get; set; }
protected virtual void PopulateDatabaseFromStream(PwDatabase pwDatabase, Stream s, IOConnectionInfo iocInfo, CompositeKey compositeKey, ProgressDialogStatusLogger status, IDatabaseLoader databaseLoader)
{
IFileStorage fileStorage = _app.GetFileStorage(iocInfo);

108
src/Kp2aBusinessLogic/database/KdbDatabaseLoader.cs
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@@ -1,27 +1,23 @@
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Security.Cryptography;
using Android.Content;
using Com.Keepassdroid.Database;
using Com.Keepassdroid.Database.Exception;
using Java.Lang;
using KeePassLib;
using KeePassLib.Cryptography;
using KeePassLib.Cryptography.Cipher;
using KeePassLib.Interfaces;
using KeePassLib.Keys;
using KeePassLib.Security;
using Exception = System.Exception;
using PwIcon = KeePassLib.PwIcon;
namespace keepass2android
{
class KdbDatabaseLoader: IDatabaseLoader
{
private Context _ctx;
public KdbDatabaseLoader(Context ctx)
{
_ctx = ctx;
}
private Dictionary<PwUuid, AdditionalGroupData> _groupData = new Dictionary<PwUuid, AdditionalGroupData>();
public void PopulateDatabaseFromStream(PwDatabase db, CompositeKey key, Stream s, IStatusLogger slLogger)
{
@@ -49,6 +45,8 @@ namespace keepass2android
var dbv3 = importer.OpenDatabase(hashingStream, password, keyfile);
db.Name = dbv3.Name;
db.RootGroup = ConvertGroup(dbv3.RootGroup);
}
catch (InvalidPasswordException e) {
@@ -71,6 +69,98 @@ namespace keepass2android
throw new Exception("hashing didn't work"); //todo remove
}
private PwGroup ConvertGroup(PwGroupV3 groupV3)
{
PwGroup pwGroup = new PwGroup(true, false);
pwGroup.Name = groupV3.Name;
pwGroup.CreationTime = ConvertTime(groupV3.TCreation);
pwGroup.LastAccessTime = ConvertTime(groupV3.TLastAccess);
pwGroup.LastModificationTime = ConvertTime(groupV3.TLastMod);
pwGroup.Expires = !PwGroupV3.NeverExpire.Equals(groupV3.TExpire);
if (pwGroup.Expires)
pwGroup.ExpiryTime = ConvertTime(groupV3.TExpire);
if (groupV3.Icon != null)
pwGroup.IconId = (PwIcon) groupV3.Icon.IconId;
_groupData.Add(pwGroup.Uuid, new AdditionalGroupData
{
Flags = groupV3.Flags,
Id = groupV3.Id.Id
});
for (int i = 0; i < groupV3.ChildGroups.Count;i++)
{
pwGroup.AddGroup(ConvertGroup(groupV3.GetGroupAt(i)), true);
}
for (int i = 0; i < groupV3.ChildEntries.Count; i++)
{
var entry = groupV3.GetEntryAt(i);
if (entry.IsMetaStream)
continue;
pwGroup.AddEntry(ConvertEntry(entry), true);
}
return pwGroup;
}
private PwEntry ConvertEntry(PwEntryV3 entryV3)
{
PwEntry pwEntry = new PwEntry(false, false);
pwEntry.Uuid = new PwUuid(entryV3.Uuid.ToArray());
pwEntry.CreationTime = ConvertTime(entryV3.TCreation);
pwEntry.LastAccessTime = ConvertTime(entryV3.TLastAccess);
pwEntry.LastModificationTime = ConvertTime(entryV3.TLastMod);
pwEntry.Expires = entryV3.Expires();
if (pwEntry.Expires)
pwEntry.ExpiryTime = ConvertTime(entryV3.TExpire);
if (entryV3.Icon != null)
pwEntry.IconId = (PwIcon) entryV3.Icon.IconId;
SetFieldIfAvailable(pwEntry, PwDefs.TitleField, false, entryV3.Title);
SetFieldIfAvailable(pwEntry, PwDefs.UserNameField, false, entryV3.Username);
SetFieldIfAvailable(pwEntry, PwDefs.UrlField, false, entryV3.Url);
SetFieldIfAvailable(pwEntry, PwDefs.PasswordField, true, entryV3.Password);
SetFieldIfAvailable(pwEntry, PwDefs.NotesField, true, entryV3.Additional);
if (entryV3.GetBinaryData() != null)
{
pwEntry.Binaries.Set(entryV3.BinaryDesc, new ProtectedBinary(true, entryV3.GetBinaryData()));
}
return pwEntry;
}
private void SetFieldIfAvailable(PwEntry pwEntry, string fieldName, bool makeProtected, string value)
{
if (value != null)
{
pwEntry.Strings.Set(fieldName, new ProtectedString(makeProtected, value));
}
}
private DateTime ConvertTime(PwDate date)
{
if (date == null)
return PwDefs.DtDefaultNow;
return JavaTimeToCSharp(date.JDate.Time);
}
private DateTime JavaTimeToCSharp(long javatime)
{
return new DateTime(1970, 1, 1).AddMilliseconds(javatime);
}
public byte[] HashOfLastStream { get; private set; }
public bool CanWrite { get { return false; } }
}
internal class AdditionalGroupData
{
public int Id { get; set; }
public int Flags { get; set; }
}
}

1
src/Kp2aBusinessLogic/database/KdbxDatabaseLoader.cs
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@@ -27,5 +27,6 @@ namespace keepass2android
}
public byte[] HashOfLastStream { get; private set; }
public bool CanWrite { get { return true; } }
}
}

15
src/Kp2aBusinessLogic/database/edit/LoadDB.cs
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@@ -19,7 +19,6 @@ using System;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using Android.App;
using KeePassLib;
using KeePassLib.Keys;
using KeePassLib.Serialization;
@@ -33,6 +32,7 @@ namespace keepass2android
private readonly string _keyfileOrProvider;
private readonly IKp2aApp _app;
private readonly bool _rememberKeyfile;
IDatabaseLoader _loader;
public LoadDb(IKp2aApp app, IOConnectionInfo ioc, Task<MemoryStream> databaseData, CompositeKey compositeKey, String keyfileOrProvider, OnFinish finish): base(finish)
{
@@ -68,8 +68,8 @@ namespace keepass2android
}
//ok, try to load the database. Let's start with Kdbx format and retry later if that is the wrong guess:
IDatabaseLoader loader = new KdbxDatabaseLoader(KdbpFile.GetFormatToUse(_ioc));
TryLoad(databaseStream, loader);
_loader = new KdbxDatabaseLoader(KdbpFile.GetFormatToUse(_ioc));
TryLoad(databaseStream);
}
catch (KeyFileException)
{
@@ -99,7 +99,7 @@ namespace keepass2android
}
private void TryLoad(MemoryStream databaseStream, IDatabaseLoader loader)
private void TryLoad(MemoryStream databaseStream)
{
//create a copy of the stream so we can try again if we get an exception which indicates we should change parameters
//This is not optimal in terms of (short-time) memory usage but is hard to avoid because the Keepass library closes streams also in case of errors.
@@ -112,14 +112,15 @@ namespace keepass2android
//now let's go:
try
{
_app.LoadDatabase(_ioc, workingCopy, _compositeKey, StatusLogger, loader);
_app.LoadDatabase(_ioc, workingCopy, _compositeKey, StatusLogger, _loader);
SaveFileData(_ioc, _keyfileOrProvider);
Kp2aLog.Log("LoadDB OK");
Finish(true);
}
catch (OldFormatException)
{
TryLoad(databaseStream, new KdbDatabaseLoader(Application.Context));
_loader = new KdbDatabaseLoader();
TryLoad(databaseStream);
}
catch (InvalidCompositeKeyException)
{
@@ -131,7 +132,7 @@ namespace keepass2android
//retry without password:
_compositeKey.RemoveUserKey(passwordKey);
//retry:
TryLoad(databaseStream, loader);
TryLoad(databaseStream);
}
else throw;
}