KSG-Netzwerk/Network/Network.cpp

#include "Network.h"
#ifndef WIN32
#    include <iostream>
#    include <netdb.h>
#    include <signal.h>
#endif
#include <Logging.h>
#include <openssl/bio.h>
#include <openssl/err.h>
#include <openssl/ssl.h>
#include <Text.h>

// Start network
void Network::Start(int maxClients)
{
#ifdef WIN32
    WSADATA lpwd;
    lpwd.iMaxSockets = maxClients;
    int error = WSAStartup(MAKEWORD(2, 0), &lpwd);
    if (error != 0)
        Framework::Logging::error()
            << "Could not initialize Win Sock 2.0 WSAStartup: " << error;
#else
    signal(SIGPIPE, SIG_IGN);
#endif
    SSL_library_init();
    SSL_load_error_strings();
    OpenSSL_add_ssl_algorithms();
}

void Network::getHostName(char* name, int bufferLen)
{
    gethostname(name, bufferLen);
}

char* Network::getHostAddress()
{
    char* address;
    char name[255] = "";
    getHostName(name, 255);
    PHOSTENT hostinfo;
    hostinfo = gethostbyname(name);
    if (!hostinfo)
    {
        Framework::Logging::error()
            << "The ip address of host '" << name << "' could not be resolved";
        return 0;
    }
    address = inet_ntoa(*(struct in_addr*)*hostinfo->h_addr_list);
    return address;
}

// Stop network
void Network::Exit()
{
#ifdef WIN32
    WSACleanup();
#endif
}

Network::NetworkReader::NetworkReader(Connection* v)
{
    connection = v;
}

Network::NetworkReader::~NetworkReader() {}

//! Reads from the resource
//! \param bytes An array to be filled with bytes from the resource
//! \param len How many bytes to read from the resource
void Network::NetworkReader::read(char* bytes, int len)
{
    connection->getMessage(bytes, len);
}

//! Reads the next line from the resource
//! \return The read line as text with line break
Framework::Text* Network::NetworkReader::readLine()
{
    int maxLength = 2048;
    char* buffer = new char[maxLength];
    char b;
    int index = 0;
    do
    {
        connection->getMessage(&b, 1);
        buffer[index++] = b;
        if (index == maxLength)
        {
            maxLength += 2048;
            char* tmp = new char[maxLength];
            memcpy(tmp, buffer, (__int64)maxLength - 2048);
            delete[] buffer;
            buffer = tmp;
        }
    } while (b != '\n');
    buffer[index] = 0;
    Framework::Text* result = new Framework::Text(buffer);
    delete[] buffer;
    return result;
}

//! Checks whether the resource has been fully read
//!  return 1 if the resource has been fully read. 0 otherwise
bool Network::NetworkReader::isEnd() const
{
    return 0;
}

Network::NetworkWriter::NetworkWriter(Connection* v)
{
    connection = v;
}

Network::NetworkWriter::~NetworkWriter() {}

//! Writes to the resource
//! \param bytes An array containing the bytes to write to the resource
//! \param len How many bytes to write to the resource
void Network::NetworkWriter::write(const char* bytes, int len)
{
    connection->send(bytes, len);
}

//! Checks whether the resource has been fully written
//!  return 1 if the resource has been fully written. 0 otherwise
bool Network::NetworkWriter::isEnd() const
{
    return 0;
}

Network::EncryptedNetworkReader::EncryptedNetworkReader(EncryptedConnection* v)
{
    connection = v;
}

//! Reads from the resource
//! \param bytes An array to be filled with bytes from the resource
//! \param len How many bytes to read from the resource
void Network::EncryptedNetworkReader::read(char* bytes, int len)
{
    connection->getMessageEncrypted(bytes, len);
}

//! Reads the next line from the resource
//! \return The read line as text with line break
Framework::Text* Network::EncryptedNetworkReader::readLine()
{
    int maxLength = 2048;
    char* buffer = new char[maxLength];
    char b;
    int index = 0;
    do
    {
        connection->getMessageEncrypted(&b, 1);
        buffer[index++] = b;
        if (index == maxLength)
        {
            maxLength += 2048;
            char* tmp = new char[maxLength];
            memcpy(tmp, buffer, (__int64)maxLength - 2048);
            delete[] buffer;
            buffer = tmp;
        }
    } while (b != '\n');
    buffer[index] = 0;
    Framework::Text* result = new Framework::Text(buffer);
    delete[] buffer;
    return result;
}

//! Checks whether the resource has been fully read
//!  return 1 if the resource has been fully read. 0 otherwise
bool Network::EncryptedNetworkReader::isEnd() const
{
    return 0;
}

Network::EncryptedNetworkWriter::EncryptedNetworkWriter(EncryptedConnection* v)
{
    connection = v;
}

//! Writes to the resource
//! \param bytes An array containing the bytes to write to the resource
//! \param len How many bytes to write to the resource
void Network::EncryptedNetworkWriter::write(const char* bytes, int len)
{
    connection->sendEncrypted(bytes, len);
}

//! Checks whether the resource has been fully written
//!  return 1 if the resource has been fully written. 0 otherwise
bool Network::EncryptedNetworkWriter::isEnd() const
{
    return 0;
}