ReactOS 0.4.15-dev-7931-gfd331f1
chargen.c
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1/*
2 * PROJECT: ReactOS simple TCP/IP services
3 * LICENSE: GPL - See COPYING in the top level directory
4 * FILE: base/services/tcpsvcs/chargen.c
5 * PURPOSE: Sends continuous lines of chars to the client
6 * COPYRIGHT: Copyright 2005 - 2008 Ged Murphy <gedmurphy@reactos.org>
7 *
8 */
9
10#include "tcpsvcs.h"
11
12/* printable ASCII's characters for chargen */
13#define ASCII_START 32
14#define ASCII_END 126
15#define NUM_CHARS ASCII_END - ASCII_START + 1
16
17/* number of chars to put on a line */
18#define LINESIZE 74 // 72 + CR + NL
19
20static BOOL
22{
23 BOOL bRet = FALSE;
24
25 /*FIXME: need to establish if peer closes connection, not just report a socket error */
26 INT retVal = send(sock, lpLine, LINESIZE, 0);
27 if (retVal > 0)
28 {
29 if (retVal == LINESIZE)
30 {
31 bRet = TRUE;
32 }
33 else
34 {
35 LogEvent(L"Chargen: Not sent enough bytes", 0, 0, LOG_FILE);
36 }
37 }
38 else if (retVal == SOCKET_ERROR)
39 {
40 LogEvent(L"Chargen: Socket error\n", WSAGetLastError(), 0, LOG_ERROR);
41 }
42 else
43 {
44 LogEvent(L"Chargen: unknown error\n", WSAGetLastError(), 0, LOG_ERROR);
45 }
46
47 return bRet;
48}
49
50static BOOL
52{
53 CHAR chars[NUM_CHARS];
55 INT charIndex;
56 INT loopIndex;
57 INT i;
58
59 /* fill the array with printable characters */
60 for (charIndex = 0, i = ASCII_START; i <= ASCII_END; charIndex++, i++)
61 chars[charIndex] = (CHAR)i;
62
63 loopIndex = 0;
64 while (!bShutdown)
65 {
66 /* reset the loop when we hit the last char */
67 if (loopIndex == NUM_CHARS)
68 loopIndex = 0;
69
70 /* fill a line array to send */
71 charIndex = loopIndex;
72 for (i=0; i < LINESIZE - 2; i++)
73 {
74 line[i] = chars[charIndex];
75
76 /* if we hit the end char, reset it */
77 if (chars[charIndex] == chars[NUM_CHARS - 1])
78 charIndex = 0;
79 else
80 charIndex++;
81 }
82 line[LINESIZE - 2] = '\r';
83 line[LINESIZE - 1] = '\n';
84
85 if (!SendLine(sock, line))
86 break;
87
88 /* start printing from next char in the array */
89 loopIndex++;
90 }
91
92 return TRUE;
93}
94
97{
98 INT retVal = 0;
99 SOCKET sock = (SOCKET)sock_;
100
101 if (!GenerateChars(sock))
102 {
103 LogEvent(L"Chargen: Char generation failed", 0, 0, LOG_FILE);
104 retVal = 1;
105 }
106
107 LogEvent(L"Chargen: Shutting connection down...", 0, 0, LOG_FILE);
109 {
110 LogEvent(L"Chargen: Connection is down", 0, 0, LOG_FILE);
111 }
112 else
113 {
114 LogEvent(L"Chargen: Connection shutdown failed", 0, 0, LOG_FILE);
115 retVal = 1;
116 }
117
118 LogEvent(L"Chargen: Terminating thread", 0, 0, LOG_FILE);
119 ExitThread(retVal);
120}
VOID LogEvent(LPCWSTR lpMsg, DWORD errNum, DWORD exitCode, UINT flags)
Definition: log.c:196
#define LINESIZE
Definition: chargen.c:18
#define NUM_CHARS
Definition: chargen.c:15
static BOOL GenerateChars(SOCKET sock)
Definition: chargen.c:51
#define ASCII_START
Definition: chargen.c:13
DWORD WINAPI ChargenHandler(VOID *sock_)
Definition: chargen.c:96
#define ASCII_END
Definition: chargen.c:14
static BOOL SendLine(SOCKET sock, LPSTR lpLine)
Definition: chargen.c:21
#define TRUE
Definition: types.h:120
#define FALSE
Definition: types.h:117
VOID WINAPI ExitThread(IN DWORD uExitCode)
Definition: thread.c:365
INT WSAAPI send(IN SOCKET s, IN CONST CHAR FAR *buf, IN INT len, IN INT flags)
Definition: send.c:23
unsigned int BOOL
Definition: ntddk_ex.h:94
unsigned long DWORD
Definition: ntddk_ex.h:95
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
#define L(x)
Definition: ntvdm.h:50
BOOL ShutdownConnection(SOCKET sock, BOOL bRec)
Definition: skelserver.c:126
Definition: parser.c:49
Definition: tcpcore.h:1455
volatile BOOL bShutdown
Definition: tcpsvcs.c:16
#define LOG_ERROR
Definition: tcpsvcs.h:16
int32_t INT
Definition: typedefs.h:58
#define WINAPI
Definition: msvc.h:6
int PASCAL FAR WSAGetLastError(void)
Definition: dllmain.c:112
UINT_PTR SOCKET
Definition: winsock.h:47
#define SOCKET_ERROR
Definition: winsock.h:333
char * LPSTR
Definition: xmlstorage.h:182
char CHAR
Definition: xmlstorage.h:175