repos/CCSFinger/CCSFinger.cpp

// Douglas Thrift
//
// CCS Computer Science
//
// Windows Finger Daemon

#include <windows.h>
#include <tchar.h>
#include <signal.h>
#include <wtsapi32.h>

#include <iostream>
#include <string>
#include <sstream>
#include <vector>

inline std::string Utf8(const std::wstring &wstring)
{
        std::string string(WideCharToMultiByte(CP_UTF8, 0, wstring.data(), int(wstring.size()), NULL, 0, NULL, NULL), '\0');

        WideCharToMultiByte(CP_UTF8, 0, wstring.data(), int(wstring.size()), const_cast<LPSTR>(string.data()), int(string.size()), NULL, NULL);

        return string;
}

class Finger
{
private:
        std::ostringstream stream;

public:
        Finger(bool full)
        {
                if (!full)
                        stream << "Login\t\tName\t\tTTY\r\n";

                PWTS_SESSION_INFO sessions;
                DWORD count;

                WTSEnumerateSessions(WTS_CURRENT_SERVER_HANDLE, 0, 1, &sessions, &count);

                for (PWTS_SESSION_INFO session = sessions; session != sessions + count; ++session)
                {
                        LPTSTR name;
                        DWORD size;

                        WTSQuerySessionInformation(WTS_CURRENT_SERVER_HANDLE, session->SessionId, WTSUserName, &name, &size);

                        stream << Utf8(name) << "\r\n";

                        WTSFreeMemory(name);

                        //PWTS_CLIENT_ADDRESS address;
                        //WTSQuerySessionInformation(WTS_CURRENT_SERVER_HANDLE, session->SessionId, WTSClientAddress, reinterpret_cast<LPTSTR *>(&address), &size);
                        //WTSFreeMemory(address);
                }

                WTSFreeMemory(sessions);
        }

        Finger(const std::string &name)
        {
        }

        inline operator std::string()
        {
                return stream.str();
        }
};

LPTSTR name;
SERVICE_STATUS status;
SERVICE_STATUS_HANDLE handle;
HANDLE stop;
WSADATA data;
std::vector<HANDLE> threads;

void FingerDaemon();
DWORD WINAPI FingerListen(LPVOID server_);
DWORD WINAPI FingerDo(LPVOID client_);
void FingerStop(int);
void WINAPI FingerMain(DWORD argc, LPTSTR *argv);
void WINAPI FingerControl(DWORD control);

int _tmain(int argc, TCHAR *argv[])
{
        SERVICE_TABLE_ENTRY entry[] = { { TEXT("CCS Finger Daemon"), LPSERVICE_MAIN_FUNCTION(FingerMain) }, { NULL, NULL } };

        if (!StartServiceCtrlDispatcher(entry))
        {
                DWORD error(GetLastError());

                switch (error)
                {
                case ERROR_FAILED_SERVICE_CONTROLLER_CONNECT:
                        goto go;

                case ERROR_INVALID_DATA:
                        std::cerr << "ERROR_INVALID_DATA" << std::endl;

                        break;

                case ERROR_SERVICE_ALREADY_RUNNING:
                        std::cerr << "ERROR_SERVICE_ALREADY_RUNNING" << std::endl;

                        break;

                default:
                        std::cerr << error << std::endl;
                }

                return 1;
        }

        return 0;

go:
        stop = CreateEvent(NULL, TRUE, FALSE, NULL);

        signal(SIGINT, FingerStop);

        try
        {
                FingerDaemon();
        }
        catch (...) {}

        return 0;
}

void FingerDaemon()
{
        WSAStartup(MAKEWORD(2, 0), &data);

        //

        SOCKET server(socket(PF_INET, SOCK_STREAM, IPPROTO_TCP));
        SOCKADDR_IN service;
        
        service.sin_family = AF_INET;
        service.sin_addr.s_addr = inet_addr("0.0.0.0");
        service.sin_port = htons(79);

        bind(server, (SOCKADDR *)(&service), sizeof (service));
        listen(server, SOMAXCONN);

        threads.push_back(CreateThread(NULL, 0, FingerListen, &server, 0, NULL));

        while(WaitForSingleObject(stop, 1000) != WAIT_OBJECT_0);

        //

        closesocket(server);

        WSACleanup();
}

DWORD WINAPI FingerListen(LPVOID server_)
{
        SOCKET &server(*reinterpret_cast<SOCKET *>(server_));

        while (true)
        {
                SOCKET client(accept(server, NULL, NULL));

                threads.push_back(CreateThread(NULL, 0, FingerDo, &client, 0, NULL));
        }

        return 0;
}

DWORD WINAPI FingerDo(LPVOID client_)
{
        SOCKET &client(*reinterpret_cast<SOCKET *>(client_));
        char buffer[1024];
        std::istringstream stream(std::string(buffer, recv(client, buffer, sizeof buffer, 0)));
        std::string line;

        std::getline(stream, line);

        stream.str(line);

        std::getline(stream, line, '\r');

        stream.str(line);

        std::string name;
        bool full(false);

        while (stream >> line)
                if (line == "/W")
                        full = true;
                else
                        name = line;

        std::string finger(name.empty() ? Finger(full) : Finger(name));

        send(client, finger.data(), int(finger.size()), 0);
        closesocket(client);

        return 0;
}

void FingerStop(int)
{
        SetEvent(stop);
}

void WINAPI FingerMain(DWORD argc, LPTSTR *argv)
{
        name = argv[0];
        handle = RegisterServiceCtrlHandler(name, LPHANDLER_FUNCTION(FingerControl));
        stop = CreateEvent(NULL, TRUE, FALSE, NULL);

        //

        status.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN;
        status.dwServiceType = SERVICE_WIN32_OWN_PROCESS;
        status.dwServiceSpecificExitCode = 0;
        status.dwCurrentState = SERVICE_RUNNING;
        status.dwWin32ExitCode = NO_ERROR;
        status.dwCheckPoint = 0;
        status.dwWaitHint = 0;

        SetServiceStatus(handle, &status);

        try
        {
                FingerDaemon();
        }
        catch (...) {}

        status.dwCurrentState = SERVICE_STOPPED;
        status.dwWin32ExitCode = NO_ERROR;
        status.dwCheckPoint = 0;
        status.dwWaitHint = 0;

        SetServiceStatus(handle, &status);
}

void WINAPI FingerControl(DWORD control)
{
        switch (control)
        {
        case SERVICE_CONTROL_STOP:
        case SERVICE_CONTROL_SHUTDOWN:
                status.dwCurrentState = SERVICE_STOP_PENDING;

                SetEvent(stop);

                break;

        case SERVICE_CONTROL_INTERROGATE:
                break;
        }

        SetServiceStatus(handle, &status);
}
Revision:	610
Committed:	2005-12-05T01:05:13-08:00 (19 years, 6 months ago) by douglas
File size:	5261 byte(s)
Log Message:	Hmm!
#	Content
1	// Douglas Thrift
2	//
3	// CCS Computer Science
4	//
5	// Windows Finger Daemon
6
7	#include <windows.h>
8	#include <tchar.h>
9	#include <signal.h>
10	#include <wtsapi32.h>
11
12	#include <iostream>
13	#include <string>
14	#include <sstream>
15	#include <vector>
16
17	inline std::string Utf8(const std::wstring &wstring)
18	{
19	std::string string(WideCharToMultiByte(CP_UTF8, 0, wstring.data(), int(wstring.size()), NULL, 0, NULL, NULL), '\0');
20
21	WideCharToMultiByte(CP_UTF8, 0, wstring.data(), int(wstring.size()), const_cast<LPSTR>(string.data()), int(string.size()), NULL, NULL);
22
23	return string;
24	}
25
26	class Finger
27	{
28	private:
29	std::ostringstream stream;
30
31	public:
32	Finger(bool full)
33	{
34	if (!full)
35	stream << "Login\t\tName\t\tTTY\r\n";
36
37	PWTS_SESSION_INFO sessions;
38	DWORD count;
39
40	WTSEnumerateSessions(WTS_CURRENT_SERVER_HANDLE, 0, 1, &sessions, &count);
41
42	for (PWTS_SESSION_INFO session = sessions; session != sessions + count; ++session)
43	{
44	LPTSTR name;
45	DWORD size;
46
47	WTSQuerySessionInformation(WTS_CURRENT_SERVER_HANDLE, session->SessionId, WTSUserName, &name, &size);
48
49	stream << Utf8(name) << "\r\n";
50
51	WTSFreeMemory(name);
52
53	//PWTS_CLIENT_ADDRESS address;
54	//WTSQuerySessionInformation(WTS_CURRENT_SERVER_HANDLE, session->SessionId, WTSClientAddress, reinterpret_cast<LPTSTR *>(&address), &size);
55	//WTSFreeMemory(address);
56	}
57
58	WTSFreeMemory(sessions);
59	}
60
61	Finger(const std::string &name)
62	{
63	}
64
65	inline operator std::string()
66	{
67	return stream.str();
68	}
69	};
70
71	LPTSTR name;
72	SERVICE_STATUS status;
73	SERVICE_STATUS_HANDLE handle;
74	HANDLE stop;
75	WSADATA data;
76	std::vector<HANDLE> threads;
77
78	void FingerDaemon();
79	DWORD WINAPI FingerListen(LPVOID server_);
80	DWORD WINAPI FingerDo(LPVOID client_);
81	void FingerStop(int);
82	void WINAPI FingerMain(DWORD argc, LPTSTR *argv);
83	void WINAPI FingerControl(DWORD control);
84
85	int _tmain(int argc, TCHAR *argv[])
86	{
87	SERVICE_TABLE_ENTRY entry[] = { { TEXT("CCS Finger Daemon"), LPSERVICE_MAIN_FUNCTION(FingerMain) }, { NULL, NULL } };
88
89	if (!StartServiceCtrlDispatcher(entry))
90	{
91	DWORD error(GetLastError());
92
93	switch (error)
94	{
95	case ERROR_FAILED_SERVICE_CONTROLLER_CONNECT:
96	goto go;
97
98	case ERROR_INVALID_DATA:
99	std::cerr << "ERROR_INVALID_DATA" << std::endl;
100
101	break;
102
103	case ERROR_SERVICE_ALREADY_RUNNING:
104	std::cerr << "ERROR_SERVICE_ALREADY_RUNNING" << std::endl;
105
106	break;
107
108	default:
109	std::cerr << error << std::endl;
110	}
111
112	return 1;
113	}
114
115	return 0;
116
117	go:
118	stop = CreateEvent(NULL, TRUE, FALSE, NULL);
119
120	signal(SIGINT, FingerStop);
121
122	try
123	{
124	FingerDaemon();
125	}
126	catch (...) {}
127
128	return 0;
129	}
130
131	void FingerDaemon()
132	{
133	WSAStartup(MAKEWORD(2, 0), &data);
134
135	//
136
137	SOCKET server(socket(PF_INET, SOCK_STREAM, IPPROTO_TCP));
138	SOCKADDR_IN service;
139
140	service.sin_family = AF_INET;
141	service.sin_addr.s_addr = inet_addr("0.0.0.0");
142	service.sin_port = htons(79);
143
144	bind(server, (SOCKADDR *)(&service), sizeof (service));
145	listen(server, SOMAXCONN);
146
147	threads.push_back(CreateThread(NULL, 0, FingerListen, &server, 0, NULL));
148
149	while(WaitForSingleObject(stop, 1000) != WAIT_OBJECT_0);
150
151	//
152
153	closesocket(server);
154
155	WSACleanup();
156	}
157
158	DWORD WINAPI FingerListen(LPVOID server_)
159	{
160	SOCKET &server(reinterpret_cast<SOCKET >(server_));
161
162	while (true)
163	{
164	SOCKET client(accept(server, NULL, NULL));
165
166	threads.push_back(CreateThread(NULL, 0, FingerDo, &client, 0, NULL));
167	}
168
169	return 0;
170	}
171
172	DWORD WINAPI FingerDo(LPVOID client_)
173	{
174	SOCKET &client(reinterpret_cast<SOCKET >(client_));
175	char buffer[1024];
176	std::istringstream stream(std::string(buffer, recv(client, buffer, sizeof buffer, 0)));
177	std::string line;
178
179	std::getline(stream, line);
180
181	stream.str(line);
182
183	std::getline(stream, line, '\r');
184
185	stream.str(line);
186
187	std::string name;
188	bool full(false);
189
190	while (stream >> line)
191	if (line == "/W")
192	full = true;
193	else
194	name = line;
195
196	std::string finger(name.empty() ? Finger(full) : Finger(name));
197
198	send(client, finger.data(), int(finger.size()), 0);
199	closesocket(client);
200
201	return 0;
202	}
203
204	void FingerStop(int)
205	{
206	SetEvent(stop);
207	}
208
209	void WINAPI FingerMain(DWORD argc, LPTSTR *argv)
210	{
211	name = argv[0];
212	handle = RegisterServiceCtrlHandler(name, LPHANDLER_FUNCTION(FingerControl));
213	stop = CreateEvent(NULL, TRUE, FALSE, NULL);
214
215	//
216
217	status.dwControlsAccepted = SERVICE_ACCEPT_STOP \| SERVICE_ACCEPT_SHUTDOWN;
218	status.dwServiceType = SERVICE_WIN32_OWN_PROCESS;
219	status.dwServiceSpecificExitCode = 0;
220	status.dwCurrentState = SERVICE_RUNNING;
221	status.dwWin32ExitCode = NO_ERROR;
222	status.dwCheckPoint = 0;
223	status.dwWaitHint = 0;
224
225	SetServiceStatus(handle, &status);
226
227	try
228	{
229	FingerDaemon();
230	}
231	catch (...) {}
232
233	status.dwCurrentState = SERVICE_STOPPED;
234	status.dwWin32ExitCode = NO_ERROR;
235	status.dwCheckPoint = 0;
236	status.dwWaitHint = 0;
237
238	SetServiceStatus(handle, &status);
239	}
240
241	void WINAPI FingerControl(DWORD control)
242	{
243	switch (control)
244	{
245	case SERVICE_CONTROL_STOP:
246	case SERVICE_CONTROL_SHUTDOWN:
247	status.dwCurrentState = SERVICE_STOP_PENDING;
248
249	SetEvent(stop);
250
251	break;
252
253	case SERVICE_CONTROL_INTERROGATE:
254	break;
255	}
256
257	SetServiceStatus(handle, &status);
258	}