/// <summary>
/// Converts the notification information into a packet of data to be sent
/// to the Growl receiving application.
/// </summary>
/// <returns>byte array</returns>
private byte[] PrepareData()
{
ByteBuilder nb = new ByteBuilder();
ByteBuilder db = new ByteBuilder();
int index = 0;
int notificationTypeCount = 0;
int notificationTypeEnabledCount = 0;
foreach (NotificationType notificationType in this.notificationTypes)
{
nb.Append(notificationType.Name.Length);
nb.Append(notificationType.Name);
notificationTypeCount++;
if (notificationType.Enabled)
{
notificationTypeEnabledCount++;
db.Append((byte)index);
}
index++;
}
ByteBuilder bb = new ByteBuilder();
bb.Append((byte)this.protocolVersion);
bb.Append((byte)this.packetType);
bb.Append(ByteBuilder.GetStringLengthAsShort(this.applicationName));
bb.Append((byte)notificationTypeCount);
bb.Append((byte)notificationTypeEnabledCount);
bb.Append(this.applicationName);
bb.Append(nb.GetBytes());
bb.Append(db.GetBytes());
// handle the password
ByteBuilder pb = new ByteBuilder();
pb.Append(this.password);
ByteBuilder bpb = new ByteBuilder();
bpb.Append(bb.GetBytes());
bpb.Append(pb.GetBytes());
byte[] checksum = Cryptography.ComputeHash(bpb.GetBytes(), Cryptography.HashAlgorithmType.MD5);
ByteBuilder fb = new ByteBuilder();
fb.Append(bb.GetBytes());
fb.Append(checksum);
byte[] data = fb.GetBytes();
return(data);
}
/// <summary>
/// Checks to see if a given packets data matches a password
/// provided by the receiving client and returns the matching password if found.
/// </summary>
/// <param name="bytes">The packets data</param>
/// <param name="passwordManager">The receiving client's list of passwords</param>
/// <param name="passwordRequired">Indicates if the request must supply a valid password</param>
/// <param name="password">Returns the matching password if found; null otherwise</param>
/// <returns><c>true</c> if the password matches, <c>false</c> otherwise</returns>
protected static bool IsPasswordValid(byte[] bytes, PasswordManager passwordManager, bool passwordRequired, out string password)
{
password = null;
byte[] packetWithoutPassword = new byte[bytes.Length - 16];
Array.Copy(bytes, 0, packetWithoutPassword, 0, packetWithoutPassword.Length);
byte[] thatChecksum = new byte[16];
Array.Copy(bytes, bytes.Length - 16, thatChecksum, 0, 16);
string thatChecksumString = Encoding.UTF8.GetString(thatChecksum);
ByteBuilder bpb = new ByteBuilder();
bpb.Append(packetWithoutPassword);
Queue <string> validPasswords = new Queue <string>();
foreach (KeyValuePair <string, Password> item in passwordManager.Passwords)
{
validPasswords.Enqueue(item.Key);
}
// if the request does not require a password, then
// we can also try no (blank) password
if (!passwordRequired)
{
validPasswords.Enqueue(String.Empty);
}
while (validPasswords.Count > 0)
{
string p = validPasswords.Dequeue();
ByteBuilder pb = new ByteBuilder();
pb.Append(bpb.GetBytes());
pb.Append(p);
byte[] thisChecksum = Cryptography.ComputeHash(pb.GetBytes(), Cryptography.HashAlgorithmType.MD5);
string thisChecksumString = Encoding.UTF8.GetString(thisChecksum);
if (thisChecksumString == thatChecksumString)
{
password = p;
return(true);
}
}
return(false);
}
/// <summary>
/// Converts the notification information into a packet of data to be sent
/// to the Growl receiving application.
/// </summary>
/// <returns>byte array</returns>
private byte[] PrepareData()
{
int flags = ConvertPriorityToFlag(this.priority);
if (this.sticky)
{
flags = flags | 1;
}
ByteBuilder bb = new ByteBuilder();
bb.Append((byte)this.protocolVersion);
bb.Append((byte)this.packetType);
bb.Append((short)flags);
bb.Append(ByteBuilder.GetStringLengthAsShort(this.notificationType.Name));
bb.Append(ByteBuilder.GetStringLengthAsShort(this.title));
bb.Append(ByteBuilder.GetStringLengthAsShort(this.description));
bb.Append(ByteBuilder.GetStringLengthAsShort(this.applicationName));
bb.Append(this.notificationType.Name);
bb.Append(this.title);
bb.Append(this.description);
bb.Append(this.applicationName);
// handle the password
ByteBuilder pb = new ByteBuilder();
pb.Append(this.password);
ByteBuilder bpb = new ByteBuilder();
bpb.Append(bb.GetBytes());
bpb.Append(pb.GetBytes());
byte[] checksum = Cryptography.ComputeHash(bpb.GetBytes(), Cryptography.HashAlgorithmType.MD5);
ByteBuilder fb = new ByteBuilder();
fb.Append(bb.GetBytes());
fb.Append(checksum);
byte[] data = fb.GetBytes();
return(data);
}