/*
 * Unit tests for 32-bit socket functions in Wine
 *
 * Copyright (c) 2005 Thomas Kho, Fredy Garcia, Douglas Rosenberg
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <stdio.h>

#include <windows.h>
#include <winsock.h>
#include <wtypes.h>
#include <winerror.h>
#include <string.h>

#ifndef STANDALONE
#include "wine/test.h"
#else
#include <assert.h>
#define START_TEST(name) main(int argc, char **argv)
#define ok(condition, msg) \
	do { \
		if(!(condition)) \
		{ \
			fprintf(stderr,"failed at %d\n",__LINE__); \
			exit(0); \
		} \
	} while(0)

#define todo_wine
#endif

// clients threads to create
#define NUM_CLIENTS 1500

// amount of data to transfer from each client to server
#define TEST_DATA_SIZE 145243

// tracks number of clients that have successfull transferred data
volatile int clientsDone = 0;

// we often pass this size by reference
int sizeofSOCKADDR_IN = sizeof(SOCKADDR_IN);

// global test data; server sends it to client, then client verifies it
char *testData;

struct TestParams {
	int serverSock;
	int serverType;
	int serverPort;
	int clientPort[NUM_CLIENTS];
};

struct ClientParams {
	struct TestParams *test;
	int clientNum; // 1...NUM_CLIENTS
};

struct MyThread {
	HANDLE Handle;
	DWORD ID;
};

struct ServerThread {
	HANDLE ServerThread;
	DWORD ServerThreadID;
	SOCKET ConnectedSocket; // socket to communicate with client
	SOCKADDR_IN Client; // client info
};

static void test_Startup(void);
void BlockingClient(volatile int *serverPort);
void BlockingServer(volatile int *port);
static void test_ClientServerBlocking_1(void);
static void test_Startup(void);

// StartNetworkApp creates socket sock of type type and returns assigned port number in addr.
void StartNetworkApp(int type, SOCKET *sock, SOCKADDR_IN *addr)
{
	SOCKADDR_IN tmpAddr;
	int tmpAddrSize;
	int bindOK;

	// create socket
	*sock = socket(AF_INET, type, 0);
	ok( *sock != INVALID_SOCKET , "Error in socket()");
	if (*sock == INVALID_SOCKET) {
		WSACleanup();
		exit(0);
	}

	addr->sin_family = AF_INET;
	addr->sin_addr.s_addr = INADDR_ANY;
	addr->sin_port = htons(0);

	// bind socket to port
	bindOK = !bind(*sock, (const SOCKADDR *) addr, sizeof(*addr));
	ok( bindOK , "Error binding client to socket");
	if( !bindOK ) {
		WSACleanup();
		exit(0);
	}

	// get port number
	tmpAddrSize = sizeof(tmpAddr);
	getsockname(*sock, (SOCKADDR *) &tmpAddr, &tmpAddrSize);
	addr->sin_port = tmpAddr.sin_port;
}

void BlockingClient(volatile int *serverPort)
{
	SOCKET sock;
	SOCKADDR_IN client, server;
	HOSTENT *hp;
	int connectError;
	int totCharsReceived = 0;
	int numCharsReceived;
	int memSame;
	int yieldCounter = 0;
	char buf[1001];

	StartNetworkApp(SOCK_STREAM, &sock, &client);

	//trace("client port %d\n",ntohs(client.sin_port));

	hp = gethostbyname("localhost");

	// yield until server determines its random port number
	while(*serverPort == 0)
		SwitchToThread();

	server.sin_family = AF_INET;
	server.sin_addr = *(struct in_addr *) hp->h_addr;
	server.sin_port = *serverPort;

	// connect to server
	connectError = connect(sock, (struct sockaddr *)&server, sizeof(struct sockaddr));
	ok( !connectError , "client cannot connect to host\n");
	if(connectError) {
		WSACleanup();
		exit(0);
	}

	// start receiving data from server
	while( totCharsReceived < TEST_DATA_SIZE ) {
		numCharsReceived = recv(sock, buf, 1000, 0);
		ok( numCharsReceived > 0, "socket was closed unexpectedly" );
		
		// check received data againt global test data
		memSame = ! memcmp(buf,testData+totCharsReceived,numCharsReceived);
		ok( memSame, "data integrity lost during transfer" );
		totCharsReceived += numCharsReceived;

		// yield to our other threads
		if(yieldCounter % 20 == 0) {
			//SwitchToThread();
		}
		yieldCounter++;
	}

	trace("client done\n");
	clientsDone++;
}

void ProcessConnection(struct ServerThread *t)
{
	// this will handle all connections to the server, it's in its own function to allow for multithreading
	int bClosed;
	int totCharsSent = 0;
	int numCharsSent;
	int yieldCounter = 0;
	const int charsPerSend = 2000;

	// loop and send data
	while( totCharsSent < TEST_DATA_SIZE ) {
		numCharsSent = send(t->ConnectedSocket, testData+totCharsSent, (totCharsSent + charsPerSend <= TEST_DATA_SIZE) ? charsPerSend : TEST_DATA_SIZE - totCharsSent, 0);
		ok( numCharsSent != SOCKET_ERROR, "socket error" );
		if(numCharsSent == SOCKET_ERROR) {
			printf("error code: %d",WSAGetLastError());
		}
		totCharsSent += numCharsSent;

		// yield to our other threads
		if(yieldCounter % 20 == 0) {
			//SwitchToThread();
		}
		yieldCounter++;
	}

	bClosed = !closesocket(t->ConnectedSocket);
	ok(bClosed,"Error closing socket");
}

void BlockingServer(volatile int *port) // listens for incoming connections and accepts up to NUM_CLIENTS connections at once
{
	struct ServerThread *Threads;
	int ThreadIndex = 0;

	SOCKET sock;
	SOCKADDR_IN server;
	int ListenReturn;

	StartNetworkApp(SOCK_STREAM, &sock, &server);

	// allocate enough space to keep track of NUM_CLIENTS connections
	Threads = malloc(sizeof(struct ServerThread) * NUM_CLIENTS);
	memset(Threads, 0, sizeof(struct ServerThread) * NUM_CLIENTS);

	// listen on port
	ListenReturn = listen(sock, NUM_CLIENTS);
	ok(ListenReturn != SOCKET_ERROR, "error listening on socket");

	// set the port parameter; clients now know we're ready to accept connections
	*port = server.sin_port;

	// we require one connection from each client thread
	for (ThreadIndex = 0; ThreadIndex < NUM_CLIENTS; ThreadIndex++) {
			// accept connection
			Threads[ThreadIndex].ConnectedSocket = accept(sock, (SOCKADDR *) &Threads[ThreadIndex].Client, &sizeofSOCKADDR_IN); // this can be modified to include the address of the remote socket
			ok(Threads[ThreadIndex].ConnectedSocket != INVALID_SOCKET, "error accepting socket");

			// spawn thread to handle sending data
			Threads[ThreadIndex].ServerThread = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE) &ProcessConnection, &Threads[ThreadIndex], 0, &Threads[ThreadIndex].ServerThreadID);
	}

	// wait for all clients to receive data before cleaning up
	while (clientsDone != NUM_CLIENTS)
		SwitchToThread();

	free(Threads);
}

static void test_ClientServerBlocking_1(void)
{
	int ThreadIndex = 0;
	// tell the compiler not to optimize code relating to serverPort
	volatile int serverPort = 0;
	struct MyThread ServerThread;
	struct MyThread *ClientThreads;

	ClientThreads = malloc(sizeof(struct MyThread) * NUM_CLIENTS);
	memset(ClientThreads, 0, sizeof(struct MyThread) * NUM_CLIENTS);
	
	trace("starting main server thread\n");
	ClientThreads[ThreadIndex].Handle = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE) &BlockingServer, (void *) &serverPort, 0, &ClientThreads[ThreadIndex].ID);

	for(ThreadIndex = 0; ThreadIndex < NUM_CLIENTS; ThreadIndex++) {
		ServerThread.Handle = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE) &BlockingClient, (void *) &serverPort, 0, &ServerThread.ID);
	}
	trace("%d clients started\n", NUM_CLIENTS);

	// wait for all clients to receive data before cleaning up
	while (clientsDone != NUM_CLIENTS)
		SwitchToThread();

	free(ClientThreads);

	trace("test_ClientServerBlocking_1 done\n");
}

static void test_Startup(void)
{
	// initialize application
	WSADATA wsaData;
  int wsastartup_result;
	int versionOK;

	// check for compatible winsock version
	wsastartup_result = WSAStartup(MAKEWORD(1,1), &wsaData);
	versionOK = (LOBYTE(wsaData.wVersion) == 1) && (HIBYTE(wsaData.wVersion) == 1);

	ok( versionOK , "WSAStartup returns an incompatible sockets version");
	if ( !versionOK ) {
		WSACleanup();
		exit(0);
	}

   ok((wsastartup_result == NO_ERROR), "Error in WSAStartup()");
	 trace("startup ok\n");
}

START_TEST(wsock32_main)
{
	testData = malloc(TEST_DATA_SIZE);
  trace("test 1 of 2:\n");
  test_Startup();
  trace("test 2 of 2:\n");
  test_ClientServerBlocking_1();
  trace("all tests done\n");

	// wait for all clients to receive data before cleaning up
	while (clientsDone != NUM_CLIENTS)
		SwitchToThread();

	free(testData);
}