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 <lm.h>

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

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:
        struct Login
        {
                std::string login, name, session;
                Login(const std::wstring &login, const std::wstring &session) : login(Utf8(login)), session(Utf8(session))
                {
                        USER_INFO_11 *info;

                        ::NetUserGetInfo(NULL, login.c_str(), 11, reinterpret_cast<LPBYTE *>(&info));

                        name = Utf8(std::wstring(info->usri11_full_name).substr(0, 20));

                        ::NetApiBufferFree(info);
                }
                bool operator<(const Login &login) const
                {
                        if (this->login == login.login)
                                return session < login.session;
                        else
                                return this->login < login.login;
                }
        };
        std::ostringstream stream;
        std::set<Login> logins;

public:
        Finger(bool full)
        {
                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);

                        if (!std::wstring(name).empty())
                        {
                                LPTSTR session_;

                                ::WTSQuerySessionInformation(WTS_CURRENT_SERVER_HANDLE, session->SessionId, WTSWinStationName, &session_, &size);

                                Login login(name, session_);

                                ::WTSFreeMemory(session_);

                                logins.insert(login);
                        }

                        ::WTSFreeMemory(name);
                }

                ::WTSFreeMemory(sessions);

                if (!full)
                {
                        stream << "Login\t\tName" << std::string(17, ' ') << "Session\r\n";

                        for (std::set<Login>::const_iterator login(logins.begin()); login != logins.end(); ++login)
                                stream << login->login << std::string(16 - login->login.size(), ' ') << login->name << std::string(21 - login->name.size(), ' ') << login->session << "\r\n";
                }
        }

        Finger(const std::string &name)
        {
                //NetQueryDisplayInformation
                //NetUserGetInfo
        }

        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:	614
Committed:	2005-12-12T18:47:20-08:00 (19 years, 6 months ago) by douglas
File size:	6339 byte(s)
Log Message:	Eep!
#	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	#include <lm.h>
12
13	#include <iostream>
14	#include <string>
15	#include <sstream>
16	#include <vector>
17	#include <set>
18
19	inline std::string Utf8(const std::wstring &wstring)
20	{
21	std::string string(::WideCharToMultiByte(CP_UTF8, 0, wstring.data(), int(wstring.size()), NULL, 0, NULL, NULL), '\0');
22
23	::WideCharToMultiByte(CP_UTF8, 0, wstring.data(), int(wstring.size()), const_cast<LPSTR>(string.data()), int(string.size()), NULL, NULL);
24
25	return string;
26	}
27
28	class Finger
29	{
30	private:
31	struct Login
32	{
33	std::string login, name, session;
34	Login(const std::wstring &login, const std::wstring &session) : login(Utf8(login)), session(Utf8(session))
35	{
36	USER_INFO_11 *info;
37
38	::NetUserGetInfo(NULL, login.c_str(), 11, reinterpret_cast<LPBYTE *>(&info));
39
40	name = Utf8(std::wstring(info->usri11_full_name).substr(0, 20));
41
42	::NetApiBufferFree(info);
43	}
44	bool operator<(const Login &login) const
45	{
46	if (this->login == login.login)
47	return session < login.session;
48	else
49	return this->login < login.login;
50	}
51	};
52	std::ostringstream stream;
53	std::set<Login> logins;
54
55	public:
56	Finger(bool full)
57	{
58	PWTS_SESSION_INFO sessions;
59	DWORD count;
60
61	::WTSEnumerateSessions(WTS_CURRENT_SERVER_HANDLE, 0, 1, &sessions, &count);
62
63	for (PWTS_SESSION_INFO session(sessions); session != sessions + count; ++session)
64	{
65	LPTSTR name;
66	DWORD size;
67
68	::WTSQuerySessionInformation(WTS_CURRENT_SERVER_HANDLE, session->SessionId, WTSUserName, &name, &size);
69
70	if (!std::wstring(name).empty())
71	{
72	LPTSTR session_;
73
74	::WTSQuerySessionInformation(WTS_CURRENT_SERVER_HANDLE, session->SessionId, WTSWinStationName, &session_, &size);
75
76	Login login(name, session_);
77
78	::WTSFreeMemory(session_);
79
80	logins.insert(login);
81	}
82
83	::WTSFreeMemory(name);
84	}
85
86	::WTSFreeMemory(sessions);
87
88	if (!full)
89	{
90	stream << "Login\t\tName" << std::string(17, ' ') << "Session\r\n";
91
92	for (std::set<Login>::const_iterator login(logins.begin()); login != logins.end(); ++login)
93	stream << login->login << std::string(16 - login->login.size(), ' ') << login->name << std::string(21 - login->name.size(), ' ') << login->session << "\r\n";
94	}
95	}
96
97	Finger(const std::string &name)
98	{
99	//NetQueryDisplayInformation
100	//NetUserGetInfo
101	}
102
103	inline operator std::string()
104	{
105	return stream.str();
106	}
107	};
108
109	LPTSTR name;
110	SERVICE_STATUS status;
111	SERVICE_STATUS_HANDLE handle;
112	HANDLE stop;
113	WSADATA data;
114	std::vector<HANDLE> threads;
115
116	void FingerDaemon();
117	DWORD WINAPI FingerListen(LPVOID server_);
118	DWORD WINAPI FingerDo(LPVOID client_);
119	void FingerStop(int);
120	void WINAPI FingerMain(DWORD argc, LPTSTR *argv);
121	void WINAPI FingerControl(DWORD control);
122
123	int _tmain(int argc, TCHAR *argv[])
124	{
125	SERVICE_TABLE_ENTRY entry[] = { { TEXT("CCS Finger Daemon"), LPSERVICE_MAIN_FUNCTION(FingerMain) }, { NULL, NULL } };
126
127	if (!::StartServiceCtrlDispatcher(entry))
128	{
129	DWORD error(::GetLastError());
130
131	switch (error)
132	{
133	case ERROR_FAILED_SERVICE_CONTROLLER_CONNECT:
134	goto go;
135
136	case ERROR_INVALID_DATA:
137	std::cerr << "ERROR_INVALID_DATA" << std::endl;
138
139	break;
140
141	case ERROR_SERVICE_ALREADY_RUNNING:
142	std::cerr << "ERROR_SERVICE_ALREADY_RUNNING" << std::endl;
143
144	break;
145
146	default:
147	std::cerr << error << std::endl;
148	}
149
150	return 1;
151	}
152
153	return 0;
154
155	go:
156	stop = ::CreateEvent(NULL, TRUE, FALSE, NULL);
157
158	::signal(SIGINT, FingerStop);
159
160	try
161	{
162	FingerDaemon();
163	}
164	catch (...) {}
165
166	return 0;
167	}
168
169	void FingerDaemon()
170	{
171	::WSAStartup(MAKEWORD(2, 0), &data);
172
173	//
174
175	SOCKET server(::socket(PF_INET, SOCK_STREAM, IPPROTO_TCP));
176	SOCKADDR_IN service;
177
178	service.sin_family = AF_INET;
179	service.sin_addr.s_addr = inet_addr("0.0.0.0");
180	service.sin_port = htons(79);
181
182	::bind(server, (SOCKADDR *)(&service), sizeof (service));
183	::listen(server, SOMAXCONN);
184
185	threads.push_back(::CreateThread(NULL, 0, FingerListen, &server, 0, NULL));
186
187	while(::WaitForSingleObject(stop, 1000) != WAIT_OBJECT_0);
188
189	//
190
191	::closesocket(server);
192
193	::WSACleanup();
194	}
195
196	DWORD WINAPI FingerListen(LPVOID server_)
197	{
198	SOCKET &server(reinterpret_cast<SOCKET >(server_));
199
200	while (true)
201	{
202	SOCKET client(accept(server, NULL, NULL));
203
204	threads.push_back(::CreateThread(NULL, 0, FingerDo, &client, 0, NULL));
205	}
206
207	return 0;
208	}
209
210	DWORD WINAPI FingerDo(LPVOID client_)
211	{
212	SOCKET &client(reinterpret_cast<SOCKET >(client_));
213	char buffer[1024];
214	std::istringstream stream(std::string(buffer, ::recv(client, buffer, sizeof buffer, 0)));
215	std::string line;
216
217	std::getline(stream, line);
218
219	stream.str(line);
220
221	std::getline(stream, line, '\r');
222
223	stream.str(line);
224
225	std::string name;
226	bool full(false);
227
228	while (stream >> line)
229	if (line == "/W")
230	full = true;
231	else
232	name = line;
233
234	std::string finger(name.empty() ? Finger(full) : Finger(name));
235
236	::send(client, finger.data(), int(finger.size()), 0);
237	::closesocket(client);
238
239	return 0;
240	}
241
242	void FingerStop(int)
243	{
244	::SetEvent(stop);
245	}
246
247	void WINAPI FingerMain(DWORD argc, LPTSTR *argv)
248	{
249	name = argv[0];
250	handle = RegisterServiceCtrlHandler(name, LPHANDLER_FUNCTION(FingerControl));
251	stop = ::CreateEvent(NULL, TRUE, FALSE, NULL);
252
253	//
254
255	status.dwControlsAccepted = SERVICE_ACCEPT_STOP \| SERVICE_ACCEPT_SHUTDOWN;
256	status.dwServiceType = SERVICE_WIN32_OWN_PROCESS;
257	status.dwServiceSpecificExitCode = 0;
258	status.dwCurrentState = SERVICE_RUNNING;
259	status.dwWin32ExitCode = NO_ERROR;
260	status.dwCheckPoint = 0;
261	status.dwWaitHint = 0;
262
263	::SetServiceStatus(handle, &status);
264
265	try
266	{
267	FingerDaemon();
268	}
269	catch (...) {}
270
271	status.dwCurrentState = SERVICE_STOPPED;
272	status.dwWin32ExitCode = NO_ERROR;
273	status.dwCheckPoint = 0;
274	status.dwWaitHint = 0;
275
276	::SetServiceStatus(handle, &status);
277	}
278
279	void WINAPI FingerControl(DWORD control)
280	{
281	switch (control)
282	{
283	case SERVICE_CONTROL_STOP:
284	case SERVICE_CONTROL_SHUTDOWN:
285	status.dwCurrentState = SERVICE_STOP_PENDING;
286
287	::SetEvent(stop);
288
289	break;
290
291	case SERVICE_CONTROL_INTERROGATE:
292	break;
293	}
294
295	::SetServiceStatus(handle, &status);
296	}