Diff: Socket.cpp

Revision:

4:b94984a20500

Parent:

2:0118da9e5169

Child:

5:378c208637e3

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Socket.cpp	Sun May 08 18:30:10 2011 +0000
@@ -0,0 +1,227 @@
+/*
+Copyright (c) 2010 Peter Barrett
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "Utils.h"
+#include "Socket.h"
+
+#define MAX_SOCKET_HANDLERS 4
+#define MAX_SOCKETS 16
+
+class SocketInternalPad
+{
+    public:
+    SocketInternal si;
+    u8  pad[8];
+};
+
+class SocketManager
+{
+    SocketHandler*  _handlers[MAX_SOCKET_HANDLERS];
+    SocketInternalPad  _sockets[MAX_SOCKETS];
+
+    public:
+    SocketManager()
+    {
+        memset(_handlers,0,sizeof(_handlers));
+        memset(_sockets,0,sizeof(_sockets));
+    }
+
+    SocketHandler* GetHandler(int type)
+    {
+        if (type < 1 || type > MAX_SOCKET_HANDLERS)
+            return 0;
+        return _handlers[type - 1];
+    }
+
+    SocketInternal* GetInternal(int s)
+    {
+        if (s < 1 || s > MAX_SOCKETS)
+            return 0;
+        return &_sockets[s - 1].si;
+    }
+
+    int RegisterSocketHandler(int type, SocketHandler* handler)
+    {
+       if (type < 1 || type > MAX_SOCKET_HANDLERS)
+            return ERR_SOCKET_TYPE_NOT_FOUND;
+        _handlers[type - 1] = handler;
+        return 0;
+    }
+
+    int Create(int type, SocketCallback callback, void* userData)
+    {
+        SocketHandler* h = GetHandler(type);
+        if (!h)
+            return ERR_SOCKET_TYPE_NOT_FOUND;
+        
+        for (int i = 0; i < MAX_SOCKETS; i++)
+        {
+            SocketInternal* si = (SocketInternal*)(_sockets+i);
+            if (si->ID == 0)
+            {
+                si->ID = i+1;
+                si->Type = type;
+                si->Callback = callback;
+                si->userData = userData;
+                printf("Creating socket %d for type %d, invoking 'Open' on %p (=%s)\n", si->ID, type, h, h->Name());
+                return h->Create(si);
+            }
+        }
+        return ERR_SOCKET_NONE_LEFT;
+    }
+
+    int Open(int type, SocketAddrHdr* addr, SocketCallback callback, void* userData)
+    {
+        SocketHandler* h = GetHandler(type);
+        if (!h)
+            return ERR_SOCKET_TYPE_NOT_FOUND;
+        
+        for (int i = 0; i < MAX_SOCKETS; i++)
+        {
+            SocketInternal* si = (SocketInternal*)(_sockets+i);
+            if (si->ID == 0)
+            {
+                si->ID = i+1;
+                si->Type = type;
+                si->Callback = callback;
+                si->userData = userData;
+                printf("Opening socket %d for type %d, invoking 'Open' on %p (=%s)\n", si->ID, type, h, h->Name());
+                return h->Open(si,addr);
+            }
+        }
+        return ERR_SOCKET_NONE_LEFT;
+    }
+
+    int Listen(int type, int channel, SocketCallback callback, void* userData)
+    {
+        SocketHandler* h = GetHandler(type);
+        if (!h)
+            return ERR_SOCKET_TYPE_NOT_FOUND;
+        
+        for (int i = 0; i < MAX_SOCKETS; i++)
+        {
+            SocketInternal* si = (SocketInternal*)(_sockets+i);
+            if (si->ID == 0)
+            {
+                si->ID = i+1;
+                si->Type = type;
+                si->Callback = callback;
+                si->userData = userData;
+                printf("Passively opening socket %d for type %d, invoking 'Listen' on %p (=%s)\n", si->ID, type, h, h->Name());
+                int sn = h->Listen(si, channel);
+                if (sn < 0)
+                  si->ID = 0;//free the socket when error
+                return sn;
+            }
+        }
+        return ERR_SOCKET_NONE_LEFT;
+    }
+
+    int Accept(int type, int scid, int rxid, SocketCallback callback, void* userData)
+    {
+        SocketHandler* h = GetHandler(type);
+        if (!h)
+            return ERR_SOCKET_TYPE_NOT_FOUND;
+        
+        for (int i = 0; i < MAX_SOCKETS; i++)
+        {
+            SocketInternal* si = (SocketInternal*)(_sockets+i);
+            if (si->ID == 0)
+            {
+                si->ID = i+1;
+                si->Type = type;
+                si->Callback = callback;
+                si->userData = userData;
+                printf("Accepting socket %d for type %d, invoking 'Accept' on %p (=%s)\n", si->ID, type, h, h->Name());
+                return h->Accept(si, scid, rxid);
+            }
+        }
+        return ERR_SOCKET_NONE_LEFT;
+    }
+
+    int Send(int socket, const u8* data, int len)
+    {
+        SocketInternal* si = GetInternal(socket);
+        if (!si || si->ID != socket)
+            return ERR_SOCKET_NOT_FOUND;
+           // printf("sending %d bytes to socket %d (ID=%d)\n", len, socket, si->ID);
+        return GetHandler(si->Type)->Send(si,data,len);
+    }
+
+    int Close(int socket)
+    {
+        SocketInternal* si = GetInternal(socket);
+        if (!si || si->ID != socket){
+            printf("Close: socket %d not found\n");
+            return ERR_SOCKET_NOT_FOUND;
+        }
+        printf("Close: socket %d (type=%d)\n", socket, si->Type);
+        si->SetState(SocketState_Closing);
+        int retval = GetHandler(si->Type)->Close(si);
+        //si->SetState(Socket_Closed);
+        //si->ID = 0;
+        return retval;
+    }
+};
+
+SocketManager gSocketManager;
+
+int Socket_Open(int type, SocketAddrHdr* addr, SocketCallback callback, void* userData)
+{
+    return gSocketManager.Open(type,addr,callback,userData);
+}
+
+int Socket_Listen(int type, int channel, SocketCallback callback, void* userData)  // Open a socket for listening
+{
+    return gSocketManager.Listen(type,channel,callback,userData);
+}
+
+int Socket_Accept(int type, int scid, int rxid, SocketCallback callback, void* userData)  // Open a socket for an incoming connection
+{
+    return gSocketManager.Accept(type,scid,rxid,callback,userData);
+}
+
+int Socket_Send(int socket, const u8* data, int len)
+{
+    return gSocketManager.Send(socket,data,len);
+}
+
+int Socket_Close(int socket)
+{
+    return gSocketManager.Close(socket);
+}
+
+int RegisterSocketHandler(int type, SocketHandler* handler)
+{
+    return gSocketManager.RegisterSocketHandler(type,handler);
+}
+
+SocketInternal* GetSocketInternal(int socket)
+{
+    return gSocketManager.GetInternal(socket);
+}
+