summaryrefslogtreecommitdiff
path: root/win/win32service.cpp
blob: 0f8a2010806f8eac9edaf137c79d31a1412b4691 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
/*       +------------------------------------+
 *       | Inspire Internet Relay Chat Daemon |
 *       +------------------------------------+
 *
 *  InspIRCd: (C) 2002-2008 InspIRCd Development Team
 * See: http://www.inspircd.org/wiki/index.php/Credits
 *
 * This program is free but copyrighted software; see
 *	    the file COPYING for details.
 *
 * ---------------------------------------------------
 */

#include <windows.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>

extern int smain(int argc, char** argv);
extern const char* dlerror();

static SERVICE_STATUS_HANDLE serviceStatusHandle;
static HANDLE hThreadEvent;
static HANDLE killServiceEvent;
static int serviceCurrentStatus;

// This is used to define ChangeServiceConf2() as we can't link
// directly against this symbol (see below where it is used)
typedef BOOL (CALLBACK* SETSERVDESC)(SC_HANDLE,DWORD,LPVOID);

/* A commandline parameter handler for service specific commandline parameters */
typedef void (*CommandlineParameterHandler)(void);

/* Represents a commandline and its handler */
struct Commandline
{
	const char* Switch;
	CommandlineParameterHandler Handler;
};


SETSERVDESC ChangeServiceConf;		// A function pointer for dynamic linking tricks


void KillService()
{
	/* FIXME: This should set a flag in the mainloop for shutting down */
	SetEvent(hThreadEvent);
	Sleep(2000);
	SetEvent(killServiceEvent);
}

DWORD WINAPI WorkerThread(LPDWORD param)
{
	// *** REAL MAIN HERE ***
	char modname[MAX_PATH];
	GetModuleFileName(NULL, modname, sizeof(modname));
	char* argv[] = { modname, "--nofork", "--debug" };
	smain(3, argv);
	KillService();
	return 0;
}

void StartServiceThread()
{
	DWORD dwd;
	CreateThread(NULL,0,(LPTHREAD_START_ROUTINE)WorkerThread,NULL,0,&dwd);
}


BOOL UpdateSCMStatus (DWORD dwCurrentState, DWORD dwWin32ExitCode, DWORD dwServiceSpecificExitCode, DWORD dwCheckPoint, DWORD dwWaitHint)
{
	BOOL success;
	SERVICE_STATUS serviceStatus;
	serviceStatus.dwServiceType = SERVICE_WIN32_OWN_PROCESS;
	serviceStatus.dwCurrentState = dwCurrentState;

	if (dwCurrentState == SERVICE_START_PENDING)
	{
		serviceStatus.dwControlsAccepted = 0;
	}
	else
	{
		serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN;
	}

	if (dwServiceSpecificExitCode == 0)
	{
		serviceStatus.dwWin32ExitCode = dwWin32ExitCode;
	}
	else
	{
		serviceStatus.dwWin32ExitCode = ERROR_SERVICE_SPECIFIC_ERROR;
	}
	serviceStatus.dwServiceSpecificExitCode =   dwServiceSpecificExitCode;
	serviceStatus.dwCheckPoint = dwCheckPoint;
	serviceStatus.dwWaitHint = dwWaitHint;

	success = SetServiceStatus (serviceStatusHandle, &serviceStatus);
	if (!success)
	{
		KillService();
	}
	return success;
}


void terminateService (int code, int wincode)
{
	UpdateSCMStatus(SERVICE_STOPPED,wincode?wincode:ERROR_SERVICE_SPECIFIC_ERROR,(wincode)?0:code,0,0);
	return;
}


VOID ServiceCtrlHandler (DWORD controlCode)
{
	switch(controlCode)
	{
		case SERVICE_CONTROL_INTERROGATE:
		break;
		case SERVICE_CONTROL_SHUTDOWN:
		case SERVICE_CONTROL_STOP:
			serviceCurrentStatus = SERVICE_STOP_PENDING;
			UpdateSCMStatus(SERVICE_STOP_PENDING, NO_ERROR, 0, 1, 5000);
			KillService();
			UpdateSCMStatus(SERVICE_STOPPED, NO_ERROR, 0, 0, 0);
			return;
		default:
		break;
	}
	UpdateSCMStatus(serviceCurrentStatus, NO_ERROR, 0, 0, 0);
}


VOID ServiceMain(DWORD argc, LPTSTR *argv)
{
	BOOL success;
	DWORD type=0, size=0;

	serviceStatusHandle = RegisterServiceCtrlHandler("InspIRCd", (LPHANDLER_FUNCTION)ServiceCtrlHandler);
	if (!serviceStatusHandle)
	{
		terminateService(1, GetLastError());
		return;
	}

	success = UpdateSCMStatus(SERVICE_START_PENDING, NO_ERROR, 0, 1, 1000);
	if (!success)
	{
		terminateService(2, GetLastError());
		return;
	}

	killServiceEvent = CreateEvent(NULL,true,false,NULL);
	hThreadEvent = CreateEvent(NULL,true,false,NULL);

	if (!killServiceEvent || !hThreadEvent)
	{
		terminateService(99, GetLastError());
		return;
	}

	success = UpdateSCMStatus(SERVICE_START_PENDING, NO_ERROR, 0, 2, 1000);
	if (!success)
	{
		terminateService(2, GetLastError());
		return;
	}

	StartServiceThread();
	serviceCurrentStatus = SERVICE_RUNNING;
	success = UpdateSCMStatus(SERVICE_RUNNING, NO_ERROR, 0, 0, 0);
	if (!success)
	{
		terminateService(6, GetLastError());
		return;
	}
	WaitForSingleObject (killServiceEvent, INFINITE);
}

void InstallService()
{
	SC_HANDLE myService, scm;
	SERVICE_DESCRIPTION svDesc;
	HINSTANCE advapi32;

	char modname[MAX_PATH];
	GetModuleFileName(NULL, modname, sizeof(modname));

	scm = OpenSCManager(0,0,SC_MANAGER_CREATE_SERVICE);
	if (!scm)
	{
		printf("Unable to open service control manager: %s\n", dlerror());
		return;
	}

	myService = CreateService(scm,"InspIRCd","Inspire IRC Daemon", SERVICE_ALL_ACCESS, SERVICE_WIN32_OWN_PROCESS,
		SERVICE_AUTO_START, SERVICE_ERROR_NORMAL, modname, 0, 0, 0, NULL, NULL);

	if (!myService)
	{
		printf("Unable to create service: %s\n", dlerror());
		CloseServiceHandle(scm);
		return;
	}

	// *** Set service description ***
	// this is supported from 5.0 (win2k) onwards only, so we can't link to the definition of
	// this function in advapi32.lib, otherwise the program will not run on windows NT 4. We
	// must use LoadLibrary and GetProcAddress to export the function name from advapi32.dll
	advapi32 = LoadLibrary("advapi32.dll");
	if (advapi32)
	{
		ChangeServiceConf = (SETSERVDESC)GetProcAddress(advapi32,"ChangeServiceConfig2A");
		if (ChangeServiceConf)
		{
			char desc[] = "The Inspire Internet Relay Chat Daemon hosts IRC channels and conversations.\
 If this service is stopped, the IRC server will not run.";
			svDesc.lpDescription = desc;
			BOOL success = ChangeServiceConf(myService,SERVICE_CONFIG_DESCRIPTION, &svDesc);
			if (!success)
			{
				printf("Unable to set service description: %s\n", dlerror());
				CloseServiceHandle(myService);
				CloseServiceHandle(scm);
				return;
			}
		}
		FreeLibrary(advapi32);
	}

	printf("Service installed.\n");
	CloseServiceHandle(myService);
	CloseServiceHandle(scm);
}

void RemoveService()
{
	SC_HANDLE myService, scm;

	scm = OpenSCManager(0,0,SC_MANAGER_CREATE_SERVICE);
	if (!scm)
	{
		printf("Unable to open service control manager: %s\n", dlerror());
		return;
	}

	myService = OpenService(scm,"InspIRCd",SERVICE_ALL_ACCESS);
	if (!myService)
	{
		printf("Unable to open service: %s\n", dlerror());
		CloseServiceHandle(scm);
		return;
	}

	if (!DeleteService(myService))
	{
		printf("Unable to delete service: %s\n", dlerror());
		CloseServiceHandle(myService);
		CloseServiceHandle(scm);
		return;
	}

	printf("Service removed.\n");
	CloseServiceHandle(myService);
	CloseServiceHandle(scm);
}

/* In windows, our main() flows through here, before calling the 'real' main, smain() in inspircd.cpp */
int main(int argc, char** argv)
{

	Commandline params[] = {
		{ "--installservice", InstallService },
		{ "--removeservice", RemoveService },
		{ NULL }
	};

	/* Check for parameters */
	if (argc > 1)
	{
		for (int z = 0; params[z].Switch; ++z)
		{
			if (!_stricmp(argv[1], params[z].Switch))
			{
				params[z].Handler();
				return 0;
			}
		}
	}

	/* First, check if the service is installed.
	 * if it is not, or we're starting as non-administrator,
	 * just call smain() and start as normal non-service
	 * process.
	 */
	SC_HANDLE myService, scm;
	scm = OpenSCManager(0,0,SC_MANAGER_CREATE_SERVICE);
	if (scm)
	{
		myService = OpenService(scm,"InspIRCd",SERVICE_ALL_ACCESS);
		if (!myService)
		{
			/* Service not installed or no permission to modify it */
			CloseServiceHandle(scm);
			return smain(argc, argv);
		}
	}
	else
	{
		/* Not enough privileges to open the SCM */
		return smain(argc, argv);
	}

	CloseServiceHandle(myService);
	CloseServiceHandle(scm);

	/* Check if the process is running interactively. InspIRCd does not run interactively
	 * as a service so if this is true, we just run the non-service inspircd.
	 */
	USEROBJECTFLAGS uoflags;
	HWINSTA winstation = GetProcessWindowStation();
	if (GetUserObjectInformation(winstation, UOI_FLAGS, &uoflags, sizeof(uoflags), NULL))
	{
		if (uoflags.dwFlags == WSF_VISIBLE)
			return smain(argc, argv);
	}

	/* If we get here, we know the service is installed so we can start it */

	SERVICE_TABLE_ENTRY serviceTable[] =
	{
		{"InspIRCd", (LPSERVICE_MAIN_FUNCTION) ServiceMain },
		{NULL, NULL}
	};

	StartServiceCtrlDispatcher(serviceTable);
	return 0;
}