mirror of
https://github.com/reactos/reactos.git
synced 2024-11-10 00:34:39 +00:00
120 lines
2.8 KiB
C
120 lines
2.8 KiB
C
/*
|
|
* PROJECT: ReactOS simple TCP/IP services
|
|
* LICENSE: GPL - See COPYING in the top level directory
|
|
* FILE: /base/services/tcpsvcs/chargen.c
|
|
* PURPOSE: Sends continous lines of chars to the client
|
|
* COPYRIGHT: Copyright 2005 - 2008 Ged Murphy <gedmurphy@reactos.org>
|
|
*
|
|
*/
|
|
|
|
#include "tcpsvcs.h"
|
|
|
|
/* printable ASCII's characters for chargen */
|
|
#define ASCII_START 32
|
|
#define ASCII_END 126
|
|
#define NUM_CHARS ASCII_END - ASCII_START
|
|
|
|
/* number of chars to put on a line */
|
|
#define LINESIZE 74 // 72 + CR + NL
|
|
|
|
static BOOL
|
|
SendLine(SOCKET sock, LPSTR lpLine)
|
|
{
|
|
BOOL bRet = FALSE;
|
|
|
|
/*FIXME: need to establish if peer closes connection, not just report a socket error */
|
|
INT retVal = send(sock, lpLine, LINESIZE, 0);
|
|
if (retVal > 0)
|
|
{
|
|
if (retVal == LINESIZE)
|
|
{
|
|
bRet = TRUE;
|
|
}
|
|
else
|
|
{
|
|
LogEvent(L"Chargen: Not sent enough bytes", 0, 0, LOG_FILE);
|
|
}
|
|
}
|
|
else if (retVal == SOCKET_ERROR)
|
|
{
|
|
LogEvent(L"Chargen: Socket error\n", WSAGetLastError(), 0, LOG_ERROR);
|
|
}
|
|
else
|
|
{
|
|
LogEvent(L"Chargen: unknown error\n", WSAGetLastError(), 0, LOG_ERROR);
|
|
}
|
|
|
|
return bRet;
|
|
}
|
|
|
|
static BOOL
|
|
GenerateChars(SOCKET sock)
|
|
{
|
|
CHAR chars[NUM_CHARS];
|
|
CHAR line[LINESIZE];
|
|
INT charIndex;
|
|
INT loopIndex;
|
|
INT i;
|
|
|
|
/* fill the array with printable characters */
|
|
for (charIndex = 0, i = ASCII_START; i <= ASCII_END; charIndex++, i++)
|
|
chars[charIndex] = (char)i;
|
|
|
|
loopIndex = 0;
|
|
while (!bShutdown)
|
|
{
|
|
/* reset the loop when we hit the last char */
|
|
if (loopIndex == NUM_CHARS)
|
|
loopIndex = 0;
|
|
|
|
/* fill a line array to send */
|
|
charIndex = loopIndex;
|
|
for (i=0; i < LINESIZE - 2; i++)
|
|
{
|
|
line[i] = chars[charIndex];
|
|
|
|
/* if we hit the end char, reset it */
|
|
if (chars[charIndex] == chars[NUM_CHARS - 1])
|
|
charIndex = 0;
|
|
else
|
|
charIndex++;
|
|
}
|
|
line[LINESIZE - 2] = '\r';
|
|
line[LINESIZE - 1] = '\n';
|
|
|
|
if (!SendLine(sock, line))
|
|
break;
|
|
|
|
/* start printing from next char in the array */
|
|
loopIndex++;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
DWORD WINAPI
|
|
ChargenHandler(VOID* sock_)
|
|
{
|
|
INT retVal = 0;
|
|
SOCKET sock = (SOCKET)sock_;
|
|
|
|
if (!GenerateChars(sock))
|
|
{
|
|
LogEvent(L"Chargen: Char generation failed", 0, 0, LOG_FILE);
|
|
retVal = 1;
|
|
}
|
|
|
|
LogEvent(L"Chargen: Shutting connection down...", 0, 0, LOG_FILE);
|
|
if (ShutdownConnection(sock, FALSE))
|
|
{
|
|
LogEvent(L"Chargen: Connection is down", 0, 0, LOG_FILE);
|
|
}
|
|
else
|
|
{
|
|
LogEvent(L"Chargen: Connection shutdown failed", 0, 0, LOG_FILE);
|
|
retVal = 1;
|
|
}
|
|
|
|
LogEvent(L"Chargen: Terminating thread", 0, 0, LOG_FILE);
|
|
ExitThread(retVal);
|
|
}
|