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, 7 months ago) by douglas
File size:	5261 byte(s)
Log Message:	Hmm!
#	User	Rev	Content
1	douglas	594	// Douglas Thrift
2			//
3			// CCS Computer Science
4			//
5			// Windows Finger Daemon
6
7			#include <windows.h>
8			#include <tchar.h>
9	douglas	596	#include <signal.h>
10	douglas	608	#include <wtsapi32.h>
11	douglas	594
12	douglas	595	#include <iostream>
13	douglas	608	#include <string>
14	douglas	610	#include <sstream>
15	douglas	609	#include <vector>
16	douglas	595
17	douglas	610	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	douglas	595	LPTSTR name;
72	douglas	594	SERVICE_STATUS status;
73			SERVICE_STATUS_HANDLE handle;
74	douglas	595	HANDLE stop;
75	douglas	594	WSADATA data;
76	douglas	609	std::vector<HANDLE> threads;
77	douglas	594
78	douglas	596	void FingerDaemon();
79	douglas	609	DWORD WINAPI FingerListen(LPVOID server_);
80			DWORD WINAPI FingerDo(LPVOID client_);
81	douglas	596	void FingerStop(int);
82	douglas	595	void WINAPI FingerMain(DWORD argc, LPTSTR *argv);
83			void WINAPI FingerControl(DWORD control);
84	douglas	594
85			int _tmain(int argc, TCHAR *argv[])
86			{
87	douglas	609	SERVICE_TABLE_ENTRY entry[] = { { TEXT("CCS Finger Daemon"), LPSERVICE_MAIN_FUNCTION(FingerMain) }, { NULL, NULL } };
88	douglas	594
89			if (!StartServiceCtrlDispatcher(entry))
90			{
91			DWORD error(GetLastError());
92
93			switch (error)
94			{
95			case ERROR_FAILED_SERVICE_CONTROLLER_CONNECT:
96	douglas	595	goto go;
97	douglas	594
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	douglas	595
117			go:
118	douglas	608	stop = CreateEvent(NULL, TRUE, FALSE, NULL);
119
120	douglas	596	signal(SIGINT, FingerStop);
121	douglas	595
122	douglas	596	try
123			{
124			FingerDaemon();
125			}
126			catch (...) {}
127
128	douglas	609	return 0;
129	douglas	594	}
130
131	douglas	596	void FingerDaemon()
132	douglas	594	{
133			WSAStartup(MAKEWORD(2, 0), &data);
134
135			//
136
137	douglas	608	SOCKET server(socket(PF_INET, SOCK_STREAM, IPPROTO_TCP));
138	douglas	594	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	douglas	608	bind(server, (SOCKADDR *)(&service), sizeof (service));
145			listen(server, SOMAXCONN);
146	douglas	594
147	douglas	609	threads.push_back(CreateThread(NULL, 0, FingerListen, &server, 0, NULL));
148	douglas	608
149	douglas	609	while(WaitForSingleObject(stop, 1000) != WAIT_OBJECT_0);
150	douglas	594
151			//
152
153	douglas	608	closesocket(server);
154
155	douglas	594	WSACleanup();
156	douglas	596	}
157	douglas	594
158	douglas	609	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	douglas	610	char buffer[1024];
176			std::istringstream stream(std::string(buffer, recv(client, buffer, sizeof buffer, 0)));
177			std::string line;
178	douglas	609
179	douglas	610	std::getline(stream, line);
180	douglas	609
181	douglas	610	stream.str(line);
182	douglas	609
183	douglas	610	std::getline(stream, line, '\r');
184	douglas	609
185	douglas	610	stream.str(line);
186	douglas	609
187	douglas	610	std::string name;
188			bool full(false);
189	douglas	609
190	douglas	610	while (stream >> line)
191			if (line == "/W")
192			full = true;
193			else
194			name = line;
195	douglas	609
196	douglas	610	std::string finger(name.empty() ? Finger(full) : Finger(name));
197	douglas	609
198	douglas	610	send(client, finger.data(), int(finger.size()), 0);
199	douglas	609	closesocket(client);
200
201			return 0;
202			}
203
204	douglas	596	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	douglas	595	status.dwCurrentState = SERVICE_STOPPED;
234	douglas	594	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	douglas	595	SetServiceStatus(handle, &status);
258	douglas	594	}