Added more net functions and a generic TCPServer

Makefile

@@ -109,6 +109,7 @@ install:
 	@mkdir -p $(INCLUDEDIR)/language/
 	@mkdir -p $(INCLUDEDIR)/fs/
 	@cp source/utils/*.h $(INCLUDEDIR)/utils/
+	@cp source/utils/*.hpp $(INCLUDEDIR)/utils/
 	@cp source/system/*.h $(INCLUDEDIR)/system/
 	@cp source/language/*.h $(INCLUDEDIR)/language/
 	@cp source/fs/*.h $(INCLUDEDIR)/fs/

source/utils/TCPServer.cpp

@@ -0,0 +1,130 @@
+#include "TCPServer.hpp"
+#include <malloc.h>
+#include <stdio.h>
+#include <string.h>
+#include <dynamic_libs/nn_act_functions.h>
+
+#include "logger.h"
+#include "net.h"
+
+#define wiiu_errno (*__gh_errno_ptr())
+
+TCPServer::TCPServer(s32 port,s32 priority) {
+    this->port = port;
+    this->sockfd = -1;
+    this->clientfd = -1;
+    memset(&(this->sock_addr),0,sizeof(this->sock_addr));
+
+    pThread = CThread::create(TCPServer::DoTCPThread, (void*)this, CThread::eAttributeAffCore2,priority);
+    pThread->resumeThread();
+}
+
+TCPServer::~TCPServer() {
+    CloseSockets();
+    DEBUG_FUNCTION_LINE("Thread will be closed\n");
+    exitThread = 1;
+
+    ICInvalidateRange((void*)&exitThread, 4);
+    DCFlushRange((void*)&exitThread, 4);
+
+    if(pThread != NULL) {
+        DEBUG_FUNCTION_LINE("Deleting it!\n");
+        delete pThread;
+    }
+    DEBUG_FUNCTION_LINE("Thread done\n");
+    pThread = NULL;
+}
+
+void TCPServer::CloseSockets() {
+    if (this->sockfd != -1) {
+        socketclose(this->sockfd);
+    }
+    if (this->clientfd != -1) {
+        socketclose(this->clientfd);
+    }
+    this->sockfd = -1;
+    this->clientfd = -1;
+}
+
+void TCPServer::ErrorHandling() {
+    CloseSockets();
+    os_usleep(1000*1000*2);
+}
+
+void TCPServer::DoTCPThreadInternal() {
+    s32 ret;
+    s32 len;
+    connected = false;
+    while (1) {
+        if(exitThread) {
+            break;
+        }
+        memset(&(this->sock_addr),0,sizeof(sock_addr));
+        sock_addr.sin_family = AF_INET;
+        sock_addr.sin_port = this->port;
+        sock_addr.sin_addr.s_addr = 0;
+
+        this->sockfd = ret = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
+        if(ret == -1) {
+            ErrorHandling();
+            continue;
+        }
+        s32 enable = 1;
+
+        setsockopt(this->sockfd, SOL_SOCKET, SO_REUSEADDR, &enable, sizeof(enable));
+
+        ret = bind(this->sockfd, (sockaddr *)&sock_addr, 16);
+        if(ret < 0) {
+            ErrorHandling();
+            continue;
+        }
+        ret = listen(this->sockfd, 1);
+        if(ret < 0) {
+            ErrorHandling();
+            continue;
+        }
+
+        do {
+            DEBUG_FUNCTION_LINE("Waiting for a connection\n");
+            if(exitThread) {
+                break;
+            }
+            len = 16;
+            clientfd = ret = accept(sockfd, (sockaddr *)&(sock_addr), &len);
+
+            if(ret == -1) {
+                ErrorHandling();
+                break;
+            }
+
+            if(!acceptConnection()) {
+                ErrorHandling();
+                break;
+            }
+
+            connected = true;
+
+            DEBUG_FUNCTION_LINE("Connection accepted\n");
+
+            whileLoop();
+
+            DEBUG_FUNCTION_LINE("Client disconnected\n");
+
+            if(clientfd != -1) {
+                socketclose(clientfd);
+            }
+            clientfd = -1;
+        } while(0);
+        DEBUG_FUNCTION_LINE("Closing TCPServer\n");
+        connected = false;
+        onConnectionClosed();
+        CloseSockets();
+        continue;
+    }
+    DEBUG_FUNCTION_LINE("Ending DoTCPThreadInternal\n");
+}
+
+void TCPServer::DoTCPThread(CThread *thread, void *arg) {
+    TCPServer * args = (TCPServer * )arg;
+    return args->DoTCPThreadInternal();
+}

source/utils/TCPServer.hpp

@@ -0,0 +1,61 @@
+#ifndef _TCPSERVER_H_
+#define _TCPSERVER_H_
+
+#include <dynamic_libs/socket_functions.h>
+#include <dynamic_libs/os_functions.h>
+#include <system/CThread.h>
+
+class TCPServer {
+public:
+    TCPServer(s32 port, s32 priority);
+    virtual ~TCPServer();
+
+    bool isConnected() {
+        return connected;
+    }
+protected:
+    bool shouldExit() {
+        return (exitThread == 1);
+    }
+
+    s32 getClientFD() {
+        return clientfd;
+    }
+
+    s32 getSocketFD() {
+        return sockfd;
+    }
+
+    struct sockaddr_in getSockAddr() {
+        return sock_addr;
+    }
+private:
+    virtual void CloseSockets();
+    virtual void ErrorHandling();
+
+    static void DoTCPThread(CThread *thread, void *arg);
+    virtual void DoTCPThreadInternal();
+
+    virtual bool acceptConnection() = 0;
+
+    virtual void onConnectionClosed(){
+        DEBUG_FUNCTION_LINE("Default onConnectionClosed \n");
+    }
+
+    /**
+        Called when a connection has be accepted.
+    **/
+    virtual bool whileLoop() = 0;
+
+    struct sockaddr_in sock_addr;
+    volatile s32 sockfd = -1;
+    volatile s32 clientfd = -1;
+
+    s32 port = 0;
+    volatile bool connected = false;
+
+    volatile s32 exitThread = 0;
+    CThread *pThread = NULL;
+};
+
+#endif //_TCPSERVER_H_

source/utils/net.c

@@ -1,20 +1,81 @@
-#include "dynamic_libs/socket_functions.h"
+#include "net.h"
+#include <dynamic_libs/os_functions.h>
+#include <dynamic_libs/socket_functions.h>
 
-int recvwait(int sock, unsigned char *buffer, int len)
-{
-    int recvBytes = 0;
+static volatile int socket_lock __attribute__((section(".data"))) = 0;
 
-    while(len)
-    {
-        int ret = recv(sock, buffer, len, 0);
-        if(ret <= 0) {
+s32 recvwait(s32 sock, void *buffer, s32 len) {
+    while(socket_lock) {
+        os_usleep(1000);
+    }
+    s32 ret;
+    while (len > 0) {
+        ret = recv(sock, buffer, len, 0);
+        if(ret < 0) {
+            socket_lock = 0;
             return ret;
         }
-
         len -= ret;
-        buffer += ret;
-        recvBytes += ret;
+        buffer =  (void *)(((char *) buffer) + ret);
     }
-
-    return recvBytes;
+    socket_lock = 0;
+    return 0;
+}
+
+u8 recvbyte(s32 sock) {
+    unsigned char buffer[1];
+    s32 ret;
+
+    ret = recvwait(sock, buffer, 1);
+    if (ret < 0) return ret;
+    return buffer[0];
+}
+
+u32 recvword(s32 sock) {
+    u32 result;
+    s32 ret;
+
+    ret = recvwait(sock, &result, 4);
+    if (ret < 0) return ret;
+    return result;
+}
+
+s32 checkbyte(s32 sock) {
+    while(socket_lock) {
+        os_usleep(1000);
+    }
+    unsigned char buffer[1];
+    s32 ret;
+
+    ret = recv(sock, buffer, 1, MSG_DONTWAIT);
+    socket_lock = 0;
+    if (ret < 0) return ret;
+    if (ret == 0) return -1;
+    return buffer[0];
+}
+
+s32 sendwait(s32 sock, const void *buffer, s32 len) {
+    while(socket_lock) {
+        os_usleep(1000);
+    }
+    s32 ret;
+    while (len > 0) {
+        // For some reason the send blocks/crashes if the buffer is too big..
+        int cur_length = len <= 0x30 ? len : 0x30;
+        ret = send(sock, buffer, cur_length, 0);
+        if(ret < 0) {
+            socket_lock = 0;
+            return ret;
+        }
+        len -= ret;
+        buffer =  (void *)(((char *) buffer) + ret);
+    }
+    socket_lock = 0;
+    return 0;
+}
+
+s32 sendbyte(s32 sock, unsigned char byte) {
+    unsigned char buffer[1];
+    buffer[0] = byte;
+    return sendwait(sock, buffer, 1);
 }

source/utils/net.h

@@ -1,11 +1,18 @@
-#ifndef __NET_H_
-#define __NET_H_
+#ifndef _UTILS_NET_H_
+#define _UTILS_NET_H_
+
+#include <dynamic_libs/os_types.h>
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-int recvwait(int sock, unsigned char *buffer, int len);
+s32 recvwait(s32 sock, void *buffer, s32 len);
+u8 recvbyte(s32 sock);
+u32 recvword(s32 sock);
+s32 checkbyte(s32 sock);
+s32 sendwait(s32 sock, const void *buffer, s32 len);
+s32 sendbyte(s32 sock, unsigned char byte);
 
 #ifdef __cplusplus
 }