static int WatchCallback(IntPtr ccns, IntPtr lhash, IntPtr rhash, IntPtr pname)
{
print("WatchCallback...");
IntPtr uri = Egal.ccn_charbuf_create();
Egal.ccn_charbuf Name = (Egal.ccn_charbuf)Marshal.PtrToStructure(pname, typeof(Egal.ccn_charbuf));
Egal.ccn_uri_append(uri, Name.buf, Name.length, 1);
IntPtr temp = Egal.ccn_charbuf_as_string(uri);
String PlayerName = Marshal.PtrToStringAnsi(temp);
String ShortPlayerName = NameTrim(PlayerName);
if (KnownCar(ShortPlayerName) == false && ShortPlayerName != me)
{
print("New Player Joined.");
}
else
{
print("Known Player.");
}
Egal.ccn_charbuf_destroy(ref uri);
return(0);
}
void OnApplicationQuit()
{
print("quitting...");
print("killing thread...");
Egal.ccn_set_run_timeout(h, 0);
oThread.Abort();
oThread.Join();
}
public void run()
{
Thread t = Thread.CurrentThread;
// print (t.IsAlive);
while (t.IsAlive == true)
{
while (counter_for_run > 0)
{
;
}
Egal.ccn_run(h, -1);
}
}
IntPtr GetHandle()
{
// this is a C# expansion of Egal.GetHandle()
IntPtr ccn = Egal.ccn_create();
if (Egal.ccn_connect(ccn, "") == -1)
{
print("could not connect to ccnd.\n");
}
else
{
print("a handle is connected to ccnd.");
}
return(ccn);
}
int WatchOverRepo(IntPtr h, string p, string t)
{
// this is a C# expansion of Egal.WatchOverRepo
int res;
IntPtr prefix = Egal.ccn_charbuf_create();
IntPtr topo = Egal.ccn_charbuf_create();
Egal.ccn_name_init(prefix);
Egal.ccn_name_init(topo);
res = Egal.ccn_name_from_uri(prefix, p);
if (res < 0)
{
print("Prefix not right");
return(res);
}
res = Egal.ccn_name_from_uri(topo, t);
if (res < 0)
{
print("Topo not right");
return(res);
}
int timeout = TIMEOUT;
if (timeout < -1)
{
print("Timeout cannot be less than -1");
return(-1);
}
timeout *= 1000;
IntPtr slice = Egal.ccns_slice_create();
Egal.ccns_slice_set_topo_prefix(slice, topo, prefix);
IntPtr ccns = Egal.ccns_open(h, slice, WatchCallback, IntPtr.Zero, IntPtr.Zero);
// ccns_close(&ccns, NULL, NULL);
Egal.ccns_slice_destroy(ref slice);
return(res);
}
int WriteSlice(IntPtr h, System.String p, System.String t)
{
// this is a C# expansion of Egal.WriteSlice
int res;
IntPtr prefix = Egal.ccn_charbuf_create();
IntPtr topo = Egal.ccn_charbuf_create();
Egal.ccn_name_init(prefix);
Egal.ccn_name_init(topo);
res = Egal.ccn_name_from_uri(prefix, p);
if (res < 0)
{
print("Prefix not right");
return(res);
}
res = Egal.ccn_name_from_uri(topo, t);
if (res < 0)
{
print("Topo not right");
return(res);
}
int timeout = TIMEOUT;
if (timeout < -1)
{
print("Timeout cannot be less than -1");
return(-1);
}
timeout *= 1000;
IntPtr slice = Egal.ccns_slice_create();
Egal.ccns_slice_set_topo_prefix(slice, topo, prefix);
res = Egal.ccns_write_slice(h, slice, prefix);
Egal.ccns_slice_destroy(ref slice); // after this, slice == 0
return(res);
}
void WriteToRepo(IntPtr h, System.String name, System.String content)
{
print("Writing " + name + " to repo: " + content);
int res;
IntPtr cb = Egal.ccn_charbuf_create();
IntPtr nm = Egal.ccn_charbuf_create();
IntPtr cmd = Egal.ccn_charbuf_create();
Egal.ccn_name_from_uri(nm, name);
Egal.ccn_create_version(h, nm, VersioningFlags.CCN_V_NOW, 0, 0);
NormalStruct Data = new NormalStruct(nm, cb, h, content.Length, content);
IntPtr pData = Marshal.AllocHGlobal(Marshal.SizeOf(Data));
Marshal.StructureToPtr(Data, pData, true);
IntPtr template = Egal.SyncGenInterest(IntPtr.Zero, 1, 4, -1, -1, IntPtr.Zero);
Egal.ccn_closure Action = new Egal.ccn_closure(WriteCallback, pData, 0);
IntPtr pnt = Marshal.AllocHGlobal(Marshal.SizeOf(Action));
Marshal.StructureToPtr(Action, pnt, true);
res = Egal.ccn_set_interest_filter(h, nm, pnt); // listen: interest
res = Egal.ccn_charbuf_append_charbuf(cmd, nm);
res = Egal.ccn_name_from_uri(cmd, "%C1.R.sw");
Egal.ccn_name_append_nonce(cmd);
counter_for_run++;
res = Egal.ccn_set_run_timeout(h, 0);
Egal.ccn_express_interest(h, cmd, pnt, template); // express interest
counter_for_run--;
return;
}
int RegisterInterestFilter(IntPtr h, string name)
{
int res = 0;
IntPtr nm = Egal.ccn_charbuf_create();
res = Egal.ccn_name_from_uri(nm, name);
if (res < 0)
{
return(res);
}
NormalStruct State = new NormalStruct(nm, IntPtr.Zero, h, 0, "");
IntPtr pState = Marshal.AllocHGlobal(Marshal.SizeOf(State));
Marshal.StructureToPtr(State, pState, true);
Egal.ccn_closure Action = new Egal.ccn_closure(PublishState, pState, 0);
IntPtr pAction = Marshal.AllocHGlobal(Marshal.SizeOf(Action));
Marshal.StructureToPtr(Action, pAction, true);
res = Egal.ccn_set_interest_filter(h, nm, pAction);
return(res);
}
int PutContent(IntPtr h, NormalStruct Data)
{
int res = 0;
Egal.ccn_charbuf Nm = new Egal.ccn_charbuf();
Nm = (Egal.ccn_charbuf)Marshal.PtrToStructure(Data.nm, typeof(Egal.ccn_charbuf));
IntPtr uri = Egal.ccn_charbuf_create();
Egal.ccn_uri_append(uri, Nm.buf, Nm.length, 0);
IntPtr name = Egal.SyncCopyName(Data.nm);
IntPtr cb = Egal.ccn_charbuf_create();
IntPtr cob = Egal.ccn_charbuf_create();
Egal.ccn_charbuf_append(cb, Data.value, Data.vSize);
Egal.ccn_charbuf Cb = new Egal.ccn_charbuf();
Cb = (Egal.ccn_charbuf)Marshal.PtrToStructure(cb, typeof(Egal.ccn_charbuf));
Egal.ccn_signing_params Sp = new Egal.ccn_signing_params(CCN.CCN_API_VERSION);
Sp.sp_flags |= SP.signingparameters.CCN_SP_FINAL_BLOCK;
IntPtr pSp = Marshal.AllocHGlobal(Marshal.SizeOf(Sp));
Marshal.StructureToPtr(Sp, pSp, true);
/*
* // test zone
* Egal.ccn_signing_params Test = new Egal.ccn_signing_params(CCN.CCN_API_VERSION);
* IntPtr pTest = Marshal.AllocHGlobal(Marshal.SizeOf(Test));
* Marshal.StructureToPtr(Test, pTest, true);
* IntPtr a = IntPtr.Zero;
* IntPtr b = IntPtr.Zero;
* IntPtr c = IntPtr.Zero;
* res = Egal.ccn_chk_signing_params(h, pSp, pTest, ref a, ref b, ref c);
* print ("check result: " + res);
* // test zone end
*/
// Data.ccn, Cb.buf, Data.vSize is correct
res |= Egal.ccn_sign_content(h, cob, name, pSp, Cb.buf, Data.vSize);
if (res < 0)
{
print("sign content error.");
}
Egal.ccn_charbuf Cob = new Egal.ccn_charbuf();
Cob = (Egal.ccn_charbuf)Marshal.PtrToStructure(cob, typeof(Egal.ccn_charbuf));
res |= Egal.ccn_put(Data.ccn, Cob.buf, Cob.length);
if (res < 0)
{
print("ccn_put error.");
}
// cleanup
Egal.ccn_charbuf_destroy(ref uri);
Egal.ccn_charbuf_destroy(ref name);
Egal.ccn_charbuf_destroy(ref cb);
Egal.ccn_charbuf_destroy(ref cob);
Marshal.FreeHGlobal(pSp);
return(res);
}
// ExpressInterest()
// takes handle, name, callback and template
public static int ExpressInterest(IntPtr ccn, string name, Egal.ccn_handler callback, IntPtr pData, IntPtr template)
{
IntPtr nm = Egal.ccn_charbuf_create();
Egal.ccn_name_from_uri(nm,name);
Egal.ccn_closure Action = new Egal.ccn_closure(callback, pData, 0);
IntPtr pnt = Marshal.AllocHGlobal(Marshal.SizeOf(Action));
Marshal.StructureToPtr(Action, pnt, true);
Egal.ccn_express_interest(ccn,nm,pnt,template);
return 0;
}