public CacheItem(WebCache cache)
{
Original = cache;
Cache = new WebCache();
Cache.Address = cache.Address;
Cache.AccessKey = cache.AccessKey;
}
public CacheSetup(OpCore core, WebCache cache)
: base(core)
{
InitializeComponent();
Core = core;
Profile = Core.User;
Cache = cache;
AddressBox.Text = cache.Address;
KeyBox.Text = (cache.AccessKey != null) ? Convert.ToBase64String(cache.AccessKey) : "";
OpBox.Text = core.Network.OpID.ToString();
}
private void TestLink_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
{
try
{
WebCache test = new WebCache();
test.Address = AddressBox.Text;
test.AccessKey = Convert.FromBase64String(KeyBox.Text);
string response = Core.Network.Cache.MakeWebCacheRequest(test, "ping:" + Core.Network.OpID.ToString());
if (response.StartsWith("pong"))
MessageBox.Show("Success");
else
MessageBox.Show(response);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
public static WebCache Decode(G2Header root)
{
WebCache cache = new WebCache();
G2Header child = new G2Header(root.Data);
while (G2Protocol.ReadNextChild(root, child) == G2ReadResult.PACKET_GOOD)
{
if (!G2Protocol.ReadPayload(child))
continue;
switch (child.Name)
{
case Packet_Address:
cache.Address = UTF8Encoding.UTF8.GetString(child.Data, child.PayloadPos, child.PayloadSize);
break;
case Packet_AccessKey:
cache.AccessKey = Utilities.ExtractBytes(child.Data, child.PayloadPos, child.PayloadSize);
break;
case Packet_LastSeen:
cache.LastSeen = DateTime.FromBinary(BitConverter.ToInt64(child.Data, child.PayloadPos));
break;
case Packet_LastTried:
cache.LastTried = DateTime.FromBinary(BitConverter.ToInt64(child.Data, child.PayloadPos));
break;
}
}
return cache;
}
// caches sent in trust / invite packets
public WebCache(WebCache cache, byte type)
{
Address = cache.Address;
AccessKey = cache.AccessKey;
PacketType = type;
SaveTimeInfo = false;
}
private void WebQueryResponse(WebCache cache, string response)
{
double timeout = 0;
bool low = false;
foreach (string line in response.Split('\n'))
{
// add to node cache
if (line.StartsWith("node:"))
{
string[] parts = line.Substring(5).Split('/');
DhtContact contact = new DhtContact(ulong.Parse(parts[0]), 0, IPAddress.Parse(parts[1]), ushort.Parse(parts[2]), ushort.Parse(parts[3]));
contact.LastSeen = Core.TimeNow; // set this so its put at front of list, and is the first to be attempted
AddContact(contact);
}
// for use with publishing back to cache, dont set our local IP with it in case on
// network with LAN nodes and web cache active, dont want to reset until we find nodes on external network
else if (line.StartsWith("remoteip:"))
cache.RemoteIP = IPAddress.Parse(line.Substring(9));
// set next publish time
else if (line.StartsWith("timeout:"))
timeout = double.Parse(line.Substring(8));
else if (line.StartsWith("load:low"))
low = true;
}
cache.NextPublish = Core.TimeNow.AddMinutes(Math.Max(timeout, 15)); // dont change to min
// if cache low auto publish to low cache so that network can be initialized
if (low)
new Thread(WebPublish).Start(cache);
// more caches will be queried by the bootstrap if network not responsive
}
private void WebPublishResponse(WebCache cache, string response)
{
bool low = false;
double timeout = 0;
foreach (string line in response.Split('\n'))
{
if (line.StartsWith("timeout:"))
timeout = double.Parse(line.Substring(8));
else if (line.StartsWith("load:low"))
low = true;
}
cache.NextPublish = Core.TimeNow.AddMinutes(Math.Max(timeout, 15)); // dont change to math.min!
// if this cache is low, immediately try to re-publish at an active cache
if (low)
NextPublishAny = Core.TimeNow;
}
public string MakeWebCacheRequest(WebCache cache, string request)
{
try
{
RijndaelManaged crypt = new RijndaelManaged();
crypt.BlockSize = 256;
crypt.Padding = PaddingMode.Zeros;
crypt.GenerateIV();
crypt.Key = cache.AccessKey;
byte[] data = ASCIIEncoding.ASCII.GetBytes(request);
byte[] encrypted = crypt.CreateEncryptor().TransformFinalBlock(data, 0, data.Length);
// php decode requests
byte[] ivEnc = Utilities.CombineArrays(crypt.IV, encrypted);
string get = Convert.ToBase64String(ivEnc);
string response = Utilities.WebDownloadString(cache.Address + "?get=" + Uri.EscapeDataString(get));
if (response == null || response == "")
throw new Exception("Access key not accepted");
// php encode response
byte[] decoded = Convert.FromBase64String(response);
// decode response
crypt.IV = Utilities.ExtractBytes(decoded, 0, 32);
data = Utilities.ExtractBytes(decoded, 32, decoded.Length - 32);
byte[] decrypted = crypt.CreateDecryptor().TransformFinalBlock(data, 0, data.Length);
response = ASCIIEncoding.ASCII.GetString(decrypted);
response = response.Trim('\0');
return response;
}
catch (Exception ex)
{
return "error: " + ex.Message;
}
}
public void AddWebCache(WebCache add)
{
// look for exact match
foreach (WebCache cache in WebCaches)
if (cache.Equals(add))
return;
// cache is pinged in minute timer
add.NextPublish = Core.TimeNow.AddMinutes(60); // default timeout to publish is 1 hour
add.PacketType = Network.IsLookup ? IdentityPacket.LookupCachedWeb : IdentityPacket.OpCachedWeb;
WebCaches.Add(add);
}