Examples with PwDbOutputException com.keepassdroid.database.exception.PwDbOutputException used on opensource projects

Example 1 with PwDbOutputException

use of com.keepassdroid.database.exception.PwDbOutputException in project KeePassDX by Kunzisoft.

the class Database method SaveData.

public void SaveData(Context ctx, Uri uri) throws IOException, PwDbOutputException {
    if (uri.getScheme().equals("file")) {
        String filename = uri.getPath();
        File tempFile = new File(filename + ".tmp");
        FileOutputStream fos = new FileOutputStream(tempFile);
        // BufferedOutputStream bos = new BufferedOutputStream(fos);
        // PwDbV3Output pmo = new PwDbV3Output(pm, bos, App.getCalendar());
        PwDbOutput pmo = PwDbOutput.getInstance(pm, fos);
        pmo.output();
        // bos.flush();
        // bos.close();
        fos.close();
        // Force data to disk before continuing
        try {
            fos.getFD().sync();
        } catch (SyncFailedException e) {
        // Ignore if fsync fails. We tried.
        }
        File orig = new File(filename);
        if (!tempFile.renameTo(orig)) {
            throw new IOException("Failed to store database.");
        }
    } else {
        OutputStream os;
        try {
            os = ctx.getContentResolver().openOutputStream(uri);
        } catch (Exception e) {
            throw new IOException("Failed to store database.");
        }
        PwDbOutput pmo = PwDbOutput.getInstance(pm, os);
        pmo.output();
        os.close();
    }
    mUri = uri;
}

Example 2 with PwDbOutputException

use of com.keepassdroid.database.exception.PwDbOutputException in project KeePassDX by Kunzisoft.

the class PwDbOutput method setIVs.

protected SecureRandom setIVs(PwDbHeader header) throws PwDbOutputException {
    SecureRandom random;
    try {
        random = SecureRandom.getInstance("SHA1PRNG");
    } catch (NoSuchAlgorithmException e) {
        throw new PwDbOutputException("Does not support secure random number generation.");
    }
    random.nextBytes(header.encryptionIV);
    random.nextBytes(header.masterSeed);
    return random;
}

Example 3 with PwDbOutputException

use of com.keepassdroid.database.exception.PwDbOutputException in project KeePassDX by Kunzisoft.

the class PwDbV3Output method outputHeader.

public PwDbHeaderV3 outputHeader(OutputStream os) throws PwDbOutputException {
    // Build header
    PwDbHeaderV3 header = new PwDbHeaderV3();
    header.signature1 = PwDbHeader.PWM_DBSIG_1;
    header.signature2 = PwDbHeaderV3.DBSIG_2;
    header.flags = PwDbHeaderV3.FLAG_SHA2;
    if (mPM.getEncAlgorithm() == PwEncryptionAlgorithm.Rjindal) {
        header.flags |= PwDbHeaderV3.FLAG_RIJNDAEL;
    } else if (mPM.getEncAlgorithm() == PwEncryptionAlgorithm.Twofish) {
        header.flags |= PwDbHeaderV3.FLAG_TWOFISH;
    } else {
        throw new PwDbOutputException("Unsupported algorithm.");
    }
    header.version = PwDbHeaderV3.DBVER_DW;
    header.numGroups = mPM.getGroups().size();
    header.numEntries = mPM.entries.size();
    header.numKeyEncRounds = mPM.getNumKeyEncRecords();
    setIVs(header);
    // Content checksum
    MessageDigest md = null;
    try {
        md = MessageDigest.getInstance("SHA-256");
    } catch (NoSuchAlgorithmException e) {
        throw new PwDbOutputException("SHA-256 not implemented here.");
    }
    // Header checksum
    MessageDigest headerDigest;
    try {
        headerDigest = MessageDigest.getInstance("SHA-256");
    } catch (NoSuchAlgorithmException e) {
        throw new PwDbOutputException("SHA-256 not implemented here.");
    }
    NullOutputStream nos;
    nos = new NullOutputStream();
    DigestOutputStream headerDos = new DigestOutputStream(nos, headerDigest);
    // Output header for the purpose of calculating the header checksum
    PwDbHeaderOutputV3 pho = new PwDbHeaderOutputV3(header, headerDos);
    try {
        pho.outputStart();
        pho.outputEnd();
        headerDos.flush();
    } catch (IOException e) {
        throw new PwDbOutputException(e);
    }
    byte[] headerHash = headerDigest.digest();
    headerHashBlock = getHeaderHashBuffer(headerHash);
    // Output database for the purpose of calculating the content checksum
    nos = new NullOutputStream();
    DigestOutputStream dos = new DigestOutputStream(nos, md);
    BufferedOutputStream bos = new BufferedOutputStream(dos);
    try {
        outputPlanGroupAndEntries(bos);
        bos.flush();
        bos.close();
    } catch (IOException e) {
        throw new PwDbOutputException("Failed to generate checksum.");
    }
    header.contentsHash = md.digest();
    // Output header for real output, containing content hash
    pho = new PwDbHeaderOutputV3(header, os);
    try {
        pho.outputStart();
        dos.on(false);
        pho.outputContentHash();
        dos.on(true);
        pho.outputEnd();
        dos.flush();
    } catch (IOException e) {
        throw new PwDbOutputException(e);
    }
    return header;
}

Example 4 with PwDbOutputException

use of com.keepassdroid.database.exception.PwDbOutputException in project KeePassDX by Kunzisoft.

the class PwDbV3Output method outputPlanGroupAndEntries.

public void outputPlanGroupAndEntries(OutputStream os) throws PwDbOutputException {
    LEDataOutputStream los = new LEDataOutputStream(os);
    if (useHeaderHash() && headerHashBlock != null) {
        try {
            los.writeUShort(0x0000);
            los.writeInt(headerHashBlock.length);
            los.write(headerHashBlock);
        } catch (IOException e) {
            throw new PwDbOutputException("Failed to output header hash: " + e.getMessage());
        }
    }
    // Groups
    List<PwGroup> groups = mPM.getGroups();
    for (int i = 0; i < groups.size(); i++) {
        PwGroupV3 pg = (PwGroupV3) groups.get(i);
        PwGroupOutputV3 pgo = new PwGroupOutputV3(pg, os);
        try {
            pgo.output();
        } catch (IOException e) {
            throw new PwDbOutputException("Failed to output a tree: " + e.getMessage());
        }
    }
    // Entries
    for (int i = 0; i < mPM.entries.size(); i++) {
        PwEntryV3 pe = (PwEntryV3) mPM.entries.get(i);
        PwEntryOutputV3 peo = new PwEntryOutputV3(pe, os);
        try {
            peo.output();
        } catch (IOException e) {
            throw new PwDbOutputException("Failed to output an entry.");
        }
    }
}

Example 5 with PwDbOutputException

use of com.keepassdroid.database.exception.PwDbOutputException in project KeePassDX by Kunzisoft.

the class PwDbV4Output method output.

@Override
public void output() throws PwDbOutputException {
    try {
        try {
            engine = CipherFactory.getInstance(mPM.dataCipher);
        } catch (NoSuchAlgorithmException e) {
            throw new PwDbOutputException("No such cipher", e);
        }
        header = (PwDbHeaderV4) outputHeader(mOS);
        OutputStream osPlain;
        if (header.version < PwDbHeaderV4.FILE_VERSION_32_4) {
            CipherOutputStream cos = attachStreamEncryptor(header, mOS);
            cos.write(header.streamStartBytes);
            HashedBlockOutputStream hashed = new HashedBlockOutputStream(cos);
            osPlain = hashed;
        } else {
            mOS.write(hashOfHeader);
            mOS.write(headerHmac);
            HmacBlockOutputStream hbos = new HmacBlockOutputStream(mOS, mPM.hmacKey);
            osPlain = attachStreamEncryptor(header, hbos);
        }
        OutputStream osXml;
        try {
            if (mPM.compressionAlgorithm == PwCompressionAlgorithm.Gzip) {
                osXml = new GZIPOutputStream(osPlain);
            } else {
                osXml = osPlain;
            }
            if (header.version >= PwDbHeaderV4.FILE_VERSION_32_4) {
                PwDbInnerHeaderOutputV4 ihOut = new PwDbInnerHeaderOutputV4((PwDatabaseV4) mPM, header, osXml);
                ihOut.output();
            }
            outputDatabase(osXml);
            osXml.close();
        } catch (IllegalArgumentException e) {
            throw new PwDbOutputException(e);
        } catch (IllegalStateException e) {
            throw new PwDbOutputException(e);
        }
    } catch (IOException e) {
        throw new PwDbOutputException(e);
    }
}