Agent effective user and group can be set in configuration file
[public/netxms.git] / src / agent / core / nxagentd.cpp
1 /*
2 ** NetXMS multiplatform core agent
3 ** Copyright (C) 2003-2016 Victor Kirhenshtein
4 **
5 ** This program is free software; you can redistribute it and/or modify
6 ** it under the terms of the GNU General Public License as published by
7 ** the Free Software Foundation; either version 2 of the License, or
8 ** (at your option) any later version.
9 **
10 ** This program is distributed in the hope that it will be useful,
11 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
12 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 ** GNU General Public License for more details.
14 **
15 ** You should have received a copy of the GNU General Public License
16 ** along with this program; if not, write to the Free Software
17 ** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 **
19 ** File: nxagentd.cpp
20 **
21 **/
22
23 #include "nxagentd.h"
24
25 #if defined(_WIN32)
26 #include <shlobj.h>
27 #include <conio.h>
28 #else
29 #include <signal.h>
30 #include <sys/wait.h>
31 #endif
32
33 #if HAVE_LOCALE_H
34 #include <locale.h>
35 #endif
36
37 #if HAVE_SYS_UTSNAME_H
38 #include <sys/utsname.h>
39 #endif
40
41 #if HAVE_SYS_SYSCTL_H
42 #include <sys/sysctl.h>
43 #endif
44
45 #ifdef _WITH_ENCRYPTION
46 #include <openssl/ssl.h>
47 #endif
48
49 #if HAVE_GRP_H
50 #include <grp.h>
51 #endif
52
53 #if HAVE_PWD_H
54 #include <pwd.h>
55 #endif
56
57 /**
58 * Externals
59 */
60 THREAD_RESULT THREAD_CALL ListenerThread(void *);
61 THREAD_RESULT THREAD_CALL SessionWatchdog(void *);
62 THREAD_RESULT THREAD_CALL TrapSender(void *);
63 THREAD_RESULT THREAD_CALL MasterAgentListener(void *arg);
64 THREAD_RESULT THREAD_CALL SNMPTrapReceiver(void *);
65 THREAD_RESULT THREAD_CALL SNMPTrapSender(void *);
66 THREAD_RESULT THREAD_CALL SyslogReceiver(void *);
67 THREAD_RESULT THREAD_CALL SyslogSender(void *);
68 THREAD_RESULT THREAD_CALL TunnelManager(void *);
69
70 void ShutdownTrapSender();
71 void ShutdownSNMPTrapSender();
72
73 void ShutdownSyslogSender();
74
75 void StartLocalDataCollector();
76 void ShutdownLocalDataCollector();
77
78 void StartWatchdog();
79 void StopWatchdog();
80 int WatchdogMain(DWORD pid);
81
82 void InitSessionList();
83 void DestroySessionList();
84
85 BOOL RegisterOnServer(const TCHAR *pszServer);
86
87 void UpdatePolicyInventory();
88
89 void ParseTunnelList(TCHAR *list);
90
91 #if !defined(_WIN32)
92 void InitStaticSubagents();
93 #endif
94
95 #ifdef _WIN32
96 extern TCHAR g_windowsServiceName[];
97 extern TCHAR g_windowsServiceDisplayName[];
98 #endif
99
100 void LIBNXAGENT_EXPORTABLE InitSubAgentAPI(void (* writeLog)(int, int, const TCHAR *),
101 void (* sendTrap1)(UINT32, const TCHAR *, const char *, va_list),
102 void (* sendTrap2)(UINT32, const TCHAR *, int, TCHAR **),
103 bool (* enumerateSessions)(EnumerationCallbackResult (*)(AbstractCommSession *, void *), void*),
104 AbstractCommSession *(* findServerSession)(UINT64),
105 bool (* sendFile)(void *, UINT32, const TCHAR *, long),
106 bool (* pushData)(const TCHAR *, const TCHAR *, UINT32, time_t),
107 DB_HANDLE (* getLocalDatabaseHandle)(),
108 CONDITION shutdownCondition, const TCHAR *dataDirectory);
109
110 /**
111 * Messages generated by mc.pl (for UNIX version only)
112 */
113 #ifndef _WIN32
114 extern unsigned int g_dwNumMessages;
115 extern const TCHAR *g_szMessages[];
116 #endif
117
118 /**
119 * Valid options for getopt()
120 */
121 #if defined(_WIN32)
122 #define VALID_OPTIONS "c:CdD:e:EfhHiIKM:n:N:P:r:RsSUvX:W:Z:"
123 #else
124 #define VALID_OPTIONS "c:CdD:fg:hKM:p:P:r:u:vX:W:Z:"
125 #endif
126
127 /**
128 * Actions
129 */
130 #define ACTION_NONE 0
131 #define ACTION_RUN_AGENT 1
132 #define ACTION_INSTALL_SERVICE 2
133 #define ACTION_REMOVE_SERVICE 3
134 #define ACTION_START_SERVICE 4
135 #define ACTION_STOP_SERVICE 5
136 #define ACTION_CHECK_CONFIG 6
137 #define ACTION_INSTALL_EVENT_SOURCE 7
138 #define ACTION_REMOVE_EVENT_SOURCE 8
139 #define ACTION_CREATE_CONFIG 9
140 #define ACTION_HELP 10
141 #define ACTION_RUN_WATCHDOG 11
142 #define ACTION_SHUTDOWN_EXT_AGENTS 12
143
144 /**
145 * Global variables
146 */
147 UINT32 g_dwFlags = AF_ENABLE_ACTIONS | AF_ENABLE_AUTOLOAD;
148 UINT32 g_failFlags = 0;
149 TCHAR g_szLogFile[MAX_PATH] = AGENT_DEFAULT_LOG;
150 TCHAR g_szSharedSecret[MAX_SECRET_LENGTH] = _T("admin");
151 TCHAR g_szConfigFile[MAX_PATH] = AGENT_DEFAULT_CONFIG;
152 TCHAR g_szFileStore[MAX_PATH] = AGENT_DEFAULT_FILE_STORE;
153 TCHAR g_szDataDirectory[MAX_PATH] = AGENT_DEFAULT_DATA_DIR;
154 TCHAR g_szPlatformSuffix[MAX_PSUFFIX_LENGTH] = _T("");
155 TCHAR g_szConfigServer[MAX_DB_STRING] = _T("not_set");
156 TCHAR g_szRegistrar[MAX_DB_STRING] = _T("not_set");
157 TCHAR g_szListenAddress[MAX_PATH] = _T("*");
158 TCHAR g_szConfigIncludeDir[MAX_PATH] = AGENT_DEFAULT_CONFIG_D;
159 TCHAR g_szConfigPolicyDir[MAX_PATH] = AGENT_DEFAULT_CONFIG_D;
160 TCHAR g_szLogParserDirectory[MAX_PATH] = _T("");
161 TCHAR g_masterAgent[MAX_PATH] = _T("not_set");
162 TCHAR g_szSNMPTrapListenAddress[MAX_PATH] = _T("*");
163 UINT16 g_wListenPort = AGENT_LISTEN_PORT;
164 ObjectArray<ServerInfo> g_serverList(8, 8, true);
165 UINT32 g_dwServerCount = 0;
166 UINT32 g_dwExecTimeout = 2000; // External process execution timeout in milliseconds
167 UINT32 g_dwSNMPTimeout = 1500;
168 time_t g_tmAgentStartTime;
169 UINT32 g_dwStartupDelay = 0;
170 UINT32 g_dwMaxSessions = 32;
171 UINT32 g_dwSNMPTrapPort = 162;
172 UINT32 g_longRunningQueryThreshold = 250;
173 UINT32 g_dcReconciliationBlockSize = 1024;
174 UINT32 g_dcReconciliationTimeout = 15000;
175 UINT32 g_dcMaxCollectorPoolSize = 64;
176 UINT32 g_zoneId = 0;
177 UINT16 g_syslogListenPort = 514;
178 #ifdef _WIN32
179 UINT16 g_sessionAgentPort = 28180;
180 #else
181 UINT16 g_sessionAgentPort = 0;
182 #endif
183 Config *g_config = NULL;
184 #ifdef _WIN32
185 UINT32 g_dwIdleTimeout = 60; // Session idle timeout
186 #else
187 UINT32 g_dwIdleTimeout = 120; // Session idle timeout
188 #endif
189
190 #if !defined(_WIN32)
191 TCHAR g_szPidFile[MAX_PATH] = _T("/var/run/nxagentd.pid");
192 #endif
193
194 /**
195 * Static variables
196 */
197 static TCHAR *m_pszActionList = NULL;
198 static TCHAR *m_pszShellActionList = NULL;
199 static TCHAR *m_pszServerList = NULL;
200 static TCHAR *m_pszControlServerList = NULL;
201 static TCHAR *m_pszMasterServerList = NULL;
202 static TCHAR *m_pszSubagentList = NULL;
203 static TCHAR *m_pszExtParamList = NULL;
204 static TCHAR *m_pszExtListsList = NULL;
205 static TCHAR *m_pszShExtParamList = NULL;
206 static TCHAR *m_pszParamProviderList = NULL;
207 static TCHAR *m_pszExtSubagentList = NULL;
208 static TCHAR *m_pszAppAgentList = NULL;
209 static TCHAR *s_serverConnectionList = NULL;
210 static UINT32 s_enabledCiphers = 0xFFFF;
211 static THREAD s_sessionWatchdogThread = INVALID_THREAD_HANDLE;
212 static THREAD s_listenerThread = INVALID_THREAD_HANDLE;
213 static THREAD s_eventSenderThread = INVALID_THREAD_HANDLE;
214 static THREAD s_snmpTrapReceiverThread = INVALID_THREAD_HANDLE;
215 static THREAD s_snmpTrapSenderThread = INVALID_THREAD_HANDLE;
216 static THREAD s_syslogReceiverThread = INVALID_THREAD_HANDLE;
217 static THREAD s_syslogSenderThread = INVALID_THREAD_HANDLE;
218 static THREAD s_masterAgentListenerThread = INVALID_THREAD_HANDLE;
219 static THREAD s_tunnelManagerThread = INVALID_THREAD_HANDLE;
220 static TCHAR s_processToWaitFor[MAX_PATH] = _T("");
221 static TCHAR s_dumpDir[MAX_PATH] = _T("C:\\");
222 static UINT64 s_maxLogSize = 16384 * 1024;
223 static UINT32 s_logHistorySize = 4;
224 static UINT32 s_logRotationMode = NXLOG_ROTATION_BY_SIZE;
225 static TCHAR s_dailyLogFileSuffix[64] = _T("");
226 static TCHAR s_executableName[MAX_PATH];
227 static UINT32 s_debugLevel = (UINT32)NXCONFIG_UNINITIALIZED_VALUE;
228
229 static CONDITION s_subAgentsStopCondition = INVALID_CONDITION_HANDLE;
230 #if defined(_WIN32)
231 static CONDITION s_shutdownCondition = INVALID_CONDITION_HANDLE;
232 #endif
233
234 #if !defined(_WIN32)
235 static pid_t s_pid;
236 #endif
237
238 /**
239 * Configuration file template
240 */
241 static NX_CFG_TEMPLATE m_cfgTemplate[] =
242 {
243 { _T("Action"), CT_STRING_LIST, '\n', 0, 0, 0, &m_pszActionList, NULL },
244 { _T("ActionShellExec"), CT_STRING_LIST, '\n', 0, 0, 0, &m_pszShellActionList, NULL },
245 { _T("AppAgent"), CT_STRING_LIST, '\n', 0, 0, 0, &m_pszAppAgentList, NULL },
246 { _T("BackgroundLogWriter"), CT_BOOLEAN, 0, 0, AF_BACKGROUND_LOG_WRITER, 0, &g_dwFlags, NULL },
247 { _T("ControlServers"), CT_STRING_LIST, ',', 0, 0, 0, &m_pszControlServerList, NULL },
248 { _T("CreateCrashDumps"), CT_BOOLEAN, 0, 0, AF_CATCH_EXCEPTIONS, 0, &g_dwFlags, NULL },
249 { _T("DataCollectionThreadPoolSize"), CT_LONG, 0, 0, 0, 0, &g_dcMaxCollectorPoolSize, NULL },
250 { _T("DataDirectory"), CT_STRING, 0, 0, MAX_PATH, 0, g_szDataDirectory, NULL },
251 { _T("DataReconciliationBlockSize"), CT_LONG, 0, 0, 0, 0, &g_dcReconciliationBlockSize, NULL },
252 { _T("DataReconciliationTimeout"), CT_LONG, 0, 0, 0, 0, &g_dcReconciliationTimeout, NULL },
253 { _T("DailyLogFileSuffix"), CT_STRING, 0, 0, 64, 0, s_dailyLogFileSuffix, NULL },
254 { _T("DebugLevel"), CT_LONG, 0, 0, 0, 0, &s_debugLevel, &s_debugLevel },
255 { _T("DisableIPv4"), CT_BOOLEAN, 0, 0, AF_DISABLE_IPV4, 0, &g_dwFlags, NULL },
256 { _T("DisableIPv6"), CT_BOOLEAN, 0, 0, AF_DISABLE_IPV6, 0, &g_dwFlags, NULL },
257 { _T("DumpDirectory"), CT_STRING, 0, 0, MAX_PATH, 0, s_dumpDir, NULL },
258 { _T("EnableActions"), CT_BOOLEAN, 0, 0, AF_ENABLE_ACTIONS, 0, &g_dwFlags, NULL },
259 { _T("EnabledCiphers"), CT_LONG, 0, 0, 0, 0, &s_enabledCiphers, NULL },
260 { _T("EnableControlConnector"), CT_BOOLEAN, 0, 0, AF_ENABLE_CONTROL_CONNECTOR, 0, &g_dwFlags, NULL },
261 { _T("EnableProxy"), CT_BOOLEAN, 0, 0, AF_ENABLE_PROXY, 0, &g_dwFlags, NULL },
262 { _T("EnableSNMPProxy"), CT_BOOLEAN, 0, 0, AF_ENABLE_SNMP_PROXY, 0, &g_dwFlags, NULL },
263 { _T("EnableSNMPTrapProxy"), CT_BOOLEAN, 0, 0, AF_ENABLE_SNMP_TRAP_PROXY, 0, &g_dwFlags, NULL },
264 { _T("EnableSyslogProxy"), CT_BOOLEAN, 0, 0, AF_ENABLE_SYSLOG_PROXY, 0, &g_dwFlags, NULL },
265 { _T("EnableSubagentAutoload"), CT_BOOLEAN, 0, 0, AF_ENABLE_AUTOLOAD, 0, &g_dwFlags, NULL },
266 { _T("EnableWatchdog"), CT_BOOLEAN, 0, 0, AF_ENABLE_WATCHDOG, 0, &g_dwFlags, NULL },
267 { _T("EncryptedSharedSecret"), CT_STRING, 0, 0, MAX_SECRET_LENGTH, 0, g_szSharedSecret, NULL },
268 { _T("ExecTimeout"), CT_LONG, 0, 0, 0, 0, &g_dwExecTimeout, NULL },
269 { _T("ExternalList"), CT_STRING_LIST, '\n', 0, 0, 0, &m_pszExtListsList, NULL },
270 { _T("ExternalMasterAgent"), CT_STRING, 0, 0, MAX_PATH, 0, g_masterAgent, NULL },
271 { _T("ExternalParameter"), CT_STRING_LIST, '\n', 0, 0, 0, &m_pszExtParamList, NULL },
272 { _T("ExternalParameterShellExec"), CT_STRING_LIST, '\n', 0, 0, 0, &m_pszShExtParamList, NULL },
273 { _T("ExternalParametersProvider"), CT_STRING_LIST, '\n', 0, 0, 0, &m_pszParamProviderList, NULL },
274 { _T("ExternalSubagent"), CT_STRING_LIST, '\n', 0, 0, 0, &m_pszExtSubagentList, NULL },
275 { _T("FileStore"), CT_STRING, 0, 0, MAX_PATH, 0, g_szFileStore, NULL },
276 { _T("FullCrashDumps"), CT_BOOLEAN, 0, 0, AF_WRITE_FULL_DUMP, 0, &g_dwFlags, NULL },
277 { _T("ListenAddress"), CT_STRING, 0, 0, MAX_PATH, 0, g_szListenAddress, NULL },
278 { _T("ListenPort"), CT_WORD, 0, 0, 0, 0, &g_wListenPort, NULL },
279 { _T("LogFile"), CT_STRING, 0, 0, MAX_PATH, 0, g_szLogFile, NULL },
280 { _T("LogHistorySize"), CT_LONG, 0, 0, 0, 0, &s_logHistorySize, NULL },
281 { _T("LogRotationMode"), CT_LONG, 0, 0, 0, 0, &s_logRotationMode, NULL },
282 { _T("LogUnresolvedSymbols"), CT_BOOLEAN, 0, 0, AF_LOG_UNRESOLVED_SYMBOLS, 0, &g_dwFlags, NULL },
283 { _T("LongRunningQueryThreshold"), CT_LONG, 0, 0, 0, 0, &g_longRunningQueryThreshold, NULL },
284 { _T("MasterServers"), CT_STRING_LIST, ',', 0, 0, 0, &m_pszMasterServerList, NULL },
285 { _T("MaxLogSize"), CT_SIZE_BYTES, 0, 0, 0, 0, &s_maxLogSize, NULL },
286 { _T("MaxSessions"), CT_LONG, 0, 0, 0, 0, &g_dwMaxSessions, NULL },
287 { _T("PlatformSuffix"), CT_STRING, 0, 0, MAX_PSUFFIX_LENGTH, 0, g_szPlatformSuffix, NULL },
288 { _T("RequireAuthentication"), CT_BOOLEAN, 0, 0, AF_REQUIRE_AUTH, 0, &g_dwFlags, NULL },
289 { _T("RequireEncryption"), CT_BOOLEAN, 0, 0, AF_REQUIRE_ENCRYPTION, 0, &g_dwFlags, NULL },
290 { _T("ServerConnection"), CT_STRING_LIST, '\n', 0, 0, 0, &s_serverConnectionList, NULL },
291 { _T("Servers"), CT_STRING_LIST, ',', 0, 0, 0, &m_pszServerList, NULL },
292 { _T("SessionIdleTimeout"), CT_LONG, 0, 0, 0, 0, &g_dwIdleTimeout, NULL },
293 { _T("SessionAgentPort"), CT_WORD, 0, 0, 0, 0, &g_sessionAgentPort, NULL },
294 { _T("SharedSecret"), CT_STRING, 0, 0, MAX_SECRET_LENGTH, 0, g_szSharedSecret, NULL },
295 { _T("SNMPTimeout"), CT_LONG, 0, 0, 0, 0, &g_dwSNMPTimeout, NULL },
296 { _T("SNMPTrapListenAddress"), CT_STRING, 0, 0, MAX_PATH, 0, &g_szSNMPTrapListenAddress, NULL },
297 { _T("SNMPTrapPort"), CT_LONG, 0, 0, 0, 0, &g_dwSNMPTrapPort, NULL },
298 { _T("StartupDelay"), CT_LONG, 0, 0, 0, 0, &g_dwStartupDelay, NULL },
299 { _T("SubAgent"), CT_STRING_LIST, '\n', 0, 0, 0, &m_pszSubagentList, NULL },
300 { _T("SyslogListenPort"), CT_WORD, 0, 0, 0, 0, &g_syslogListenPort, NULL },
301 { _T("TimeOut"), CT_IGNORE, 0, 0, 0, 0, NULL, NULL },
302 { _T("WaitForProcess"), CT_STRING, 0, 0, MAX_PATH, 0, s_processToWaitFor, NULL },
303 { _T("ZoneId"), CT_LONG, 0, 0, 0, 0, &g_zoneId, NULL },
304 { _T(""), CT_END_OF_LIST, 0, 0, 0, 0, NULL, NULL }
305 };
306
307 /**
308 * Help text
309 */
310 static TCHAR m_szHelpText[] =
311 _T("Usage: nxagentd [options]\n")
312 _T("Where valid options are:\n")
313 _T(" -c <file> : Use configuration file <file> (default ") AGENT_DEFAULT_CONFIG _T(")\n")
314 _T(" -C : Load configuration file, dump resulting configuration, and exit\n")
315 _T(" -d : Run as daemon/service\n")
316 _T(" -D <level> : Set debug level (0..9)\n")
317 #ifdef _WIN32
318 _T(" -e <name> : Windows event source name\n")
319 #endif
320 _T(" -f : Run in foreground\n")
321 #if !defined(_WIN32)
322 _T(" -g <gid> : Chhange group ID to <gid> after start\n")
323 #endif
324 _T(" -h : Display help and exit\n")
325 #ifdef _WIN32
326 _T(" -H : Hide agent's window when in standalone mode\n")
327 _T(" -i : Installed Windows service must be interactive\n")
328 _T(" -I : Install Windows service\n")
329 #endif
330 _T(" -K : Shutdown all connected external sub-agents\n")
331 _T(" -M <addr> : Download config from management server <addr>\n")
332 #ifdef _WIN32
333 _T(" -n <name> : Service name\n")
334 _T(" -N <name> : Service display name\n")
335 #endif
336 #if !defined(_WIN32)
337 _T(" -p : Path to pid file (default: /var/run/nxagentd.pid)\n")
338 #endif
339 _T(" -P <text> : Set platform suffix to <text>\n")
340 _T(" -r <addr> : Register agent on management server <addr>\n")
341 #ifdef _WIN32
342 _T(" -R : Remove Windows service\n")
343 _T(" -s : Start Windows servive\n")
344 _T(" -S : Stop Windows service\n")
345 #endif
346 #if !defined(_WIN32)
347 _T(" -u <uid> : Chhange user ID to <uid> after start\n")
348 #endif
349 _T(" -v : Display version and exit\n")
350 _T("\n");
351
352 /**
353 * Server info: constructor
354 */
355 ServerInfo::ServerInfo(const TCHAR *name, bool control, bool master)
356 {
357 #ifdef UNICODE
358 m_name = MBStringFromWideString(name);
359 #else
360 m_name = strdup(name);
361 #endif
362
363 char *p = strchr(m_name, '/');
364 if (p != NULL)
365 {
366 *p = 0;
367 p++;
368 m_address = InetAddress::resolveHostName(m_name);
369 if (m_address.isValid())
370 {
371 int bits = strtol(p, NULL, 10);
372 if ((bits >= 0) && (bits <= ((m_address.getFamily() == AF_INET) ? 32 : 128)))
373 m_address.setMaskBits(bits);
374 }
375 m_redoResolve = false;
376 }
377 else
378 {
379 m_address = InetAddress::resolveHostName(m_name);
380 m_redoResolve = true;
381 }
382
383 m_control = control;
384 m_master = master;
385 m_lastResolveTime = time(NULL);
386 m_mutex = MutexCreate();
387 }
388
389 /**
390 * Server info: destructor
391 */
392 ServerInfo::~ServerInfo()
393 {
394 safe_free(m_name);
395 MutexDestroy(m_mutex);
396 }
397
398 /**
399 * Server info: resolve hostname if needed
400 */
401 void ServerInfo::resolve()
402 {
403 time_t now = time(NULL);
404 time_t age = now - m_lastResolveTime;
405 if ((age >= 3600) || ((age > 300) && !m_address.isValid()))
406 {
407 m_address = InetAddress::resolveHostName(m_name);
408 m_lastResolveTime = now;
409 }
410 }
411
412 /**
413 * Server info: match address
414 */
415 bool ServerInfo::match(const InetAddress &addr)
416 {
417 MutexLock(m_mutex);
418 if (m_redoResolve)
419 resolve();
420 bool result = m_address.isValid() ? m_address.contain(addr) : false;
421 MutexUnlock(m_mutex);
422 return result;
423 }
424
425 #ifdef _WIN32
426
427 /**
428 * Get our own console window handle (an alternative to Microsoft's GetConsoleWindow)
429 */
430 static HWND GetConsoleHWND()
431 {
432 HWND hWnd;
433 DWORD wpid, cpid;
434
435 cpid = GetCurrentProcessId();
436 while(1)
437 {
438 hWnd = FindWindowEx(NULL, NULL, _T("ConsoleWindowClass"), NULL);
439 if (hWnd == NULL)
440 break;
441
442 GetWindowThreadProcessId(hWnd, &wpid);
443 if (cpid == wpid)
444 break;
445 }
446
447 return hWnd;
448 }
449
450 /**
451 * Get proc address and write log file
452 */
453 static FARPROC GetProcAddressAndLog(HMODULE hModule, LPCSTR procName)
454 {
455 FARPROC ptr;
456
457 ptr = GetProcAddress(hModule, procName);
458 if ((ptr == NULL) && (g_dwFlags & AF_LOG_UNRESOLVED_SYMBOLS))
459 nxlog_write(MSG_NO_FUNCTION, EVENTLOG_WARNING_TYPE, "s", procName);
460 return ptr;
461 }
462
463 /**
464 * Shutdown thread (created by H_RestartAgent)
465 */
466 static THREAD_RESULT THREAD_CALL ShutdownThread(void *pArg)
467 {
468 DebugPrintf(INVALID_INDEX, 1, _T("Shutdown thread started"));
469 Shutdown();
470 ExitProcess(0);
471 return THREAD_OK; // Never reached
472 }
473
474 #endif /* _WIN32 */
475
476
477 /**
478 * Restart agent
479 */
480 static LONG H_RestartAgent(const TCHAR *action, StringList *args, const TCHAR *data, AbstractCommSession *session)
481 {
482 DebugPrintf(INVALID_INDEX, 1, _T("H_RestartAgent() called"));
483
484 TCHAR szCmdLine[4096], szPlatformSuffixOption[MAX_PSUFFIX_LENGTH + 16];
485
486 if (g_szPlatformSuffix[0] != 0)
487 {
488 _sntprintf(szPlatformSuffixOption, MAX_PSUFFIX_LENGTH + 16, _T("-P \"%s\" "), g_szPlatformSuffix);
489 }
490 else
491 {
492 szPlatformSuffixOption[0] = 0;
493 }
494
495 #ifdef _WIN32
496 _sntprintf(szCmdLine, 4096, _T("\"%s\" -c \"%s\" -n \"%s\" -e \"%s\" %s%s%s%s%s-D %d %s-X %u"), s_executableName,
497 g_szConfigFile, g_windowsServiceName, g_windowsEventSourceName,
498 (g_dwFlags & AF_DAEMON) ? _T("-d ") : _T(""),
499 (g_dwFlags & AF_HIDE_WINDOW) ? _T("-H ") : _T(""),
500 (g_dwFlags & AF_CENTRAL_CONFIG) ? _T("-M ") : _T(""),
501 (g_dwFlags & AF_CENTRAL_CONFIG) ? g_szConfigServer : _T(""),
502 (g_dwFlags & AF_CENTRAL_CONFIG) ? _T(" ") : _T(""),
503 s_debugLevel, szPlatformSuffixOption,
504 (g_dwFlags & AF_DAEMON) ? 0 : GetCurrentProcessId());
505 DebugPrintf(INVALID_INDEX, 1, _T("Restarting agent with command line '%s'"), szCmdLine);
506
507 DWORD dwResult;
508 STARTUPINFO si;
509 PROCESS_INFORMATION pi;
510
511 // Fill in process startup info structure
512 memset(&si, 0, sizeof(STARTUPINFO));
513 si.cb = sizeof(STARTUPINFO);
514
515 // Create new process
516 if (!CreateProcess(NULL, szCmdLine, NULL, NULL, FALSE,
517 (g_dwFlags & AF_DAEMON) ? (CREATE_NO_WINDOW | DETACHED_PROCESS) : (CREATE_NEW_CONSOLE),
518 NULL, NULL, &si, &pi))
519 {
520 nxlog_write(MSG_CREATE_PROCESS_FAILED, EVENTLOG_ERROR_TYPE, "se", szCmdLine, GetLastError());
521 dwResult = ERR_EXEC_FAILED;
522 }
523 else
524 {
525 // Close all handles
526 CloseHandle(pi.hThread);
527 CloseHandle(pi.hProcess);
528 dwResult = ERR_SUCCESS;
529 }
530 if ((dwResult == ERR_SUCCESS) && (!(g_dwFlags & AF_DAEMON)))
531 {
532 if (g_dwFlags & AF_HIDE_WINDOW)
533 {
534 ConditionSet(s_shutdownCondition);
535 }
536 else
537 {
538 ThreadCreate(ShutdownThread, 0, NULL);
539 }
540 }
541 return dwResult;
542 #else
543 _sntprintf(szCmdLine, 4096, _T("\"%s\" -c \"%s\" %s%s%s%s-D %d %s-X %lu"), s_executableName,
544 g_szConfigFile, (g_dwFlags & AF_DAEMON) ? _T("-d ") : _T(""),
545 (g_dwFlags & AF_CENTRAL_CONFIG) ? _T("-M ") : _T(""),
546 (g_dwFlags & AF_CENTRAL_CONFIG) ? g_szConfigServer : _T(""),
547 (g_dwFlags & AF_CENTRAL_CONFIG) ? _T(" ") : _T(""),
548 (int)s_debugLevel, szPlatformSuffixOption,
549 (unsigned long)s_pid);
550 DebugPrintf(INVALID_INDEX, 1, _T("Restarting agent with command line '%s'"), szCmdLine);
551 return ExecuteCommand(szCmdLine, NULL, NULL);
552 #endif
553 }
554
555 /**
556 * This function writes message from subagent to agent's log
557 */
558 static void WriteSubAgentMsg(int logLevel, int debugLevel, const TCHAR *pszMsg)
559 {
560 if (logLevel == EVENTLOG_DEBUG_TYPE)
561 {
562 if (debugLevel <= (int)s_debugLevel)
563 nxlog_write(MSG_DEBUG, EVENTLOG_DEBUG_TYPE, "s", pszMsg);
564 }
565 else
566 {
567 nxlog_write(MSG_SUBAGENT_MSG, logLevel, "s", pszMsg);
568 }
569 }
570
571 /**
572 * Signal handler for UNIX platforms
573 */
574 #if !defined(_WIN32)
575
576 static THREAD_RESULT THREAD_CALL SignalHandler(void *pArg)
577 {
578 sigset_t signals;
579 int nSignal;
580
581 sigemptyset(&signals);
582 sigaddset(&signals, SIGTERM);
583 sigaddset(&signals, SIGINT);
584 sigaddset(&signals, SIGSEGV);
585 sigaddset(&signals, SIGHUP);
586 sigaddset(&signals, SIGUSR1);
587 sigaddset(&signals, SIGUSR2);
588 #if !defined(__sun) && !defined(_AIX) && !defined(__hpux)
589 sigaddset(&signals, SIGPIPE);
590 #endif
591
592 sigprocmask(SIG_BLOCK, &signals, NULL);
593
594 while(1)
595 {
596 if (sigwait(&signals, &nSignal) == 0)
597 {
598 switch(nSignal)
599 {
600 case SIGTERM:
601 case SIGINT:
602 goto stop_handler;
603 case SIGSEGV:
604 abort();
605 break;
606 default:
607 break;
608 }
609 }
610 else
611 {
612 ThreadSleepMs(100);
613 }
614 }
615
616 stop_handler:
617 sigprocmask(SIG_UNBLOCK, &signals, NULL);
618 return THREAD_OK;
619 }
620
621 #endif
622
623 /**
624 * Load platform subagent
625 */
626 static void LoadPlatformSubagent()
627 {
628 #ifdef _WIN32
629 LoadSubAgent(_T("WINNT.NSM"));
630 #else
631 #if HAVE_SYS_UTSNAME_H && !defined(_STATIC_AGENT)
632 struct utsname un;
633 TCHAR szName[MAX_PATH];
634 int i;
635
636 if (uname(&un) != -1)
637 {
638 // Convert system name to lowercase
639 for(i = 0; un.sysname[i] != 0; i++)
640 un.sysname[i] = tolower(un.sysname[i]);
641 if (!strcmp(un.sysname, "hp-ux"))
642 strcpy(un.sysname, "hpux");
643 _sntprintf(szName, MAX_PATH, _T("%hs.nsm"), un.sysname);
644 LoadSubAgent(szName);
645 }
646 #endif
647 #endif
648 }
649
650 /**
651 * Send file to server (subagent API)
652 */
653 static bool SendFileToServer(void *session, UINT32 requestId, const TCHAR *file, long offset)
654 {
655 if (session == NULL)
656 return false;
657 return ((CommSession *)session)->sendFile(requestId, file, offset);
658 }
659
660 /**
661 * Parser server list
662 */
663 static void ParseServerList(TCHAR *serverList, bool isControl, bool isMaster)
664 {
665 TCHAR *pItem, *pEnd;
666
667 for(pItem = pEnd = serverList; pEnd != NULL && *pItem != 0; pItem = pEnd + 1)
668 {
669 pEnd = _tcschr(pItem, _T(','));
670 if (pEnd != NULL)
671 *pEnd = 0;
672 StrStrip(pItem);
673
674 g_serverList.add(new ServerInfo(pItem, isControl, isMaster));
675 }
676 free(serverList);
677 }
678
679 /**
680 * Agent initialization
681 */
682 BOOL Initialize()
683 {
684 TCHAR *pItem, *pEnd;
685
686 if (s_debugLevel == (UINT32)NXCONFIG_UNINITIALIZED_VALUE)
687 s_debugLevel = 0;
688
689 if (!_tcscmp(g_szDataDirectory, _T("{default}")))
690 {
691 GetNetXMSDirectory(nxDirData, g_szDataDirectory);
692 }
693
694 //Initialize config policy folder
695 TCHAR tail = g_szDataDirectory[_tcslen(g_szDataDirectory) - 1];
696 _sntprintf(g_szConfigPolicyDir, MAX_PATH, _T("%s%s%s"), g_szDataDirectory,
697 ((tail != '\\') && (tail != '/')) ? FS_PATH_SEPARATOR : _T(""),
698 CONFIG_AP_FOLDER FS_PATH_SEPARATOR);
699 CreateFolder(g_szConfigPolicyDir);
700
701 // Load configuration
702 g_config->loadConfigDirectory(g_szConfigPolicyDir, _T("agent"));
703 g_config->parseTemplate(_T("agent"), m_cfgTemplate);
704
705 // Open log file
706 if (!nxlog_open((g_dwFlags & AF_USE_SYSLOG) ? NXAGENTD_SYSLOG_NAME : g_szLogFile,
707 ((g_dwFlags & AF_USE_SYSLOG) ? NXLOG_USE_SYSLOG : 0) |
708 ((g_dwFlags & AF_BACKGROUND_LOG_WRITER) ? NXLOG_BACKGROUND_WRITER : 0) |
709 ((g_dwFlags & AF_DAEMON) ? 0 : NXLOG_PRINT_TO_STDOUT),
710 _T("NXAGENTD.EXE"),
711 #ifdef _WIN32
712 0, NULL, MSG_DEBUG))
713 #else
714 g_dwNumMessages, g_szMessages, MSG_DEBUG))
715 #endif
716 {
717 //TODO: set flag that log have been opened with errors
718 s_debugLevel = 1;
719 g_failFlags |= FAIL_OPEN_LOG;
720 nxlog_open(NXAGENTD_SYSLOG_NAME, NXLOG_USE_SYSLOG |
721 ((g_dwFlags & AF_BACKGROUND_LOG_WRITER) ? NXLOG_BACKGROUND_WRITER : 0) |
722 ((g_dwFlags & AF_DAEMON) ? 0 : NXLOG_PRINT_TO_STDOUT),
723 _T("NXAGENTD.EXE"),
724 #ifdef _WIN32
725 0, NULL, MSG_DEBUG);
726 #else
727 g_dwNumMessages, g_szMessages, MSG_DEBUG);
728 #endif
729 _ftprintf(stderr, _T("ERROR: Cannot open log file, logs will be written to syslog with debug level 1\n"));
730
731 }
732 else
733 {
734 if (!(g_dwFlags & AF_USE_SYSLOG))
735 {
736 if (!nxlog_set_rotation_policy((int)s_logRotationMode, s_maxLogSize, (int)s_logHistorySize, s_dailyLogFileSuffix))
737 if (!(g_dwFlags & AF_DAEMON))
738 _tprintf(_T("WARNING: cannot set log rotation policy; using default values\n"));
739 }
740 }
741 nxlog_write(MSG_USE_CONFIG_D, NXLOG_INFO, "s", g_szConfigIncludeDir);
742 nxlog_write(MSG_DEBUG_LEVEL, NXLOG_INFO, "d", s_debugLevel);
743 nxlog_set_debug_level(s_debugLevel);
744
745 if (_tcscmp(g_masterAgent, _T("not_set")))
746 {
747 g_dwFlags |= AF_SUBAGENT_LOADER;
748 DebugPrintf(INVALID_INDEX, 1, _T("Switched to external subagent loader mode, master agent address is %s"), g_masterAgent);
749 }
750
751 DebugPrintf(INVALID_INDEX, 1, _T("Data directory: %s"), g_szDataDirectory);
752 CreateFolder(g_szDataDirectory);
753
754 #ifndef _WIN32
755 nxlog_debug(2, _T("Effective user ID %d"), (int)geteuid());
756 nxlog_debug(2, _T("Effective group ID %d"), (int)getegid());
757 #endif
758
759 //Initialize log parser policy folder
760 tail = g_szDataDirectory[_tcslen(g_szDataDirectory) - 1];
761 _sntprintf(g_szLogParserDirectory, MAX_PATH, _T("%s%s%s"), g_szDataDirectory,
762 ((tail != '\\') && (tail != '/')) ? FS_PATH_SEPARATOR : _T(""),
763 LOGPARSER_AP_FOLDER FS_PATH_SEPARATOR);
764 DebugPrintf(INVALID_INDEX, 6, _T("Log parser policy directory: %s"), g_szLogParserDirectory);
765 CreateFolder(g_szLogParserDirectory);
766 DebugPrintf(INVALID_INDEX, 6, _T("Configuration policy directory: %s"), g_szConfigPolicyDir);
767 CreateFolder(g_szFileStore);
768
769 #ifdef _WIN32
770 WSADATA wsaData;
771 int wrc = WSAStartup(MAKEWORD(2, 2), &wsaData);
772 if (wrc != 0)
773 {
774 nxlog_write(MSG_WSASTARTUP_FAILED, NXLOG_ERROR, "e", wrc);
775 return FALSE;
776 }
777 #endif
778
779 // Initialize API for subagents
780 s_subAgentsStopCondition = ConditionCreate(TRUE);
781 InitSubAgentAPI(WriteSubAgentMsg, SendTrap, SendTrap, EnumerateSessions, FindServerSession,
782 SendFileToServer, PushData, GetLocalDatabaseHandle, s_subAgentsStopCondition, g_szDataDirectory);
783 DebugPrintf(INVALID_INDEX, 1, _T("Subagent API initialized"));
784
785 // Initialize cryptografy
786 if (!InitCryptoLib(s_enabledCiphers))
787 {
788 nxlog_write(MSG_INIT_CRYPTO_FAILED, EVENTLOG_ERROR_TYPE, "e", WSAGetLastError());
789 return FALSE;
790 }
791
792 // Initialize libssl - it is not used by core agent
793 // but may be needed by some subagents. Allowing first load of libssl by
794 // subagent via dlopen() may lead to undesired side effects
795 #ifdef _WITH_ENCRYPTION
796 SSL_library_init();
797 SSL_load_error_strings();
798 #endif
799
800 DBInit(MSG_DB_LIBRARY, MSG_SQL_ERROR);
801
802 if (!OpenLocalDatabase())
803 {
804 nxlog_write(MSG_LOCAL_DB_OPEN_FAILED, NXLOG_ERROR, NULL);
805 }
806
807 if (!(g_dwFlags & AF_SUBAGENT_LOADER))
808 {
809 if (g_dwFlags & AF_ENABLE_SNMP_PROXY)
810 {
811 g_snmpProxyThreadPool = ThreadPoolCreate(2, 128, _T("SNMPPROXY"));
812 }
813 InitSessionList();
814
815 // Initialize built-in parameters
816 if (!InitParameterList())
817 return FALSE;
818
819 // Parse outgoing server connection (tunnel) list
820 if (s_serverConnectionList != NULL)
821 ParseTunnelList(s_serverConnectionList);
822
823 // Parse server lists
824 if (m_pszMasterServerList != NULL)
825 ParseServerList(m_pszMasterServerList, true, true);
826 if (m_pszControlServerList != NULL)
827 ParseServerList(m_pszControlServerList, true, false);
828 if (m_pszServerList != NULL)
829 ParseServerList(m_pszServerList, false, false);
830
831 // Add built-in actions
832 AddAction(_T("Agent.Restart"), AGENT_ACTION_SUBAGENT, NULL, H_RestartAgent, _T("CORE"), _T("Restart agent"));
833
834 // Load platform subagents
835 #if !defined(_WIN32)
836 InitStaticSubagents();
837 #endif
838 if (g_dwFlags & AF_ENABLE_AUTOLOAD)
839 {
840 LoadPlatformSubagent();
841 }
842 }
843
844 // Wait for external process if requested
845 if (s_processToWaitFor[0] != 0)
846 {
847 DebugPrintf(INVALID_INDEX, 1, _T("Waiting for process %s"), s_processToWaitFor);
848 if (!WaitForProcess(s_processToWaitFor))
849 nxlog_write(MSG_WAITFORPROCESS_FAILED, EVENTLOG_ERROR_TYPE, "s", s_processToWaitFor);
850 }
851
852 // Load other subagents
853 if (m_pszSubagentList != NULL)
854 {
855 for(pItem = pEnd = m_pszSubagentList; pEnd != NULL && *pItem != 0; pItem = pEnd + 1)
856 {
857 pEnd = _tcschr(pItem, _T('\n'));
858 if (pEnd != NULL)
859 *pEnd = 0;
860 StrStrip(pItem);
861 LoadSubAgent(pItem);
862 }
863 free(m_pszSubagentList);
864 }
865
866 // Parse action list
867 if (m_pszActionList != NULL)
868 {
869 for(pItem = pEnd = m_pszActionList; pEnd != NULL && *pItem != 0; pItem = pEnd + 1)
870 {
871 pEnd = _tcschr(pItem, _T('\n'));
872 if (pEnd != NULL)
873 *pEnd = 0;
874 StrStrip(pItem);
875 if (!AddActionFromConfig(pItem, FALSE))
876 nxlog_write(MSG_ADD_ACTION_FAILED, EVENTLOG_WARNING_TYPE, "s", pItem);
877 }
878 free(m_pszActionList);
879 }
880 if (m_pszShellActionList != NULL)
881 {
882 for(pItem = pEnd = m_pszShellActionList; pEnd != NULL && *pItem != 0; pItem = pEnd + 1)
883 {
884 pEnd = _tcschr(pItem, _T('\n'));
885
886 if (pEnd != NULL)
887 *pEnd = 0;
888 StrStrip(pItem);
889 if (!AddActionFromConfig(pItem, TRUE))
890 nxlog_write(MSG_ADD_ACTION_FAILED, EVENTLOG_WARNING_TYPE, "s", pItem);
891 }
892 free(m_pszShellActionList);
893 }
894
895 // Parse external parameters list
896 if (m_pszExtParamList != NULL)
897 {
898 for(pItem = pEnd = m_pszExtParamList; pEnd != NULL && *pItem != 0; pItem = pEnd + 1)
899 {
900 pEnd = _tcschr(pItem, _T('\n'));
901 if (pEnd != NULL)
902 *pEnd = 0;
903 StrStrip(pItem);
904 if (!AddExternalParameter(pItem, FALSE, FALSE))
905 nxlog_write(MSG_ADD_EXT_PARAM_FAILED, EVENTLOG_WARNING_TYPE, "s", pItem);
906 }
907 free(m_pszExtParamList);
908 }
909 if (m_pszShExtParamList != NULL)
910 {
911 for(pItem = pEnd = m_pszShExtParamList; pEnd != NULL && *pItem != 0; pItem = pEnd + 1)
912 {
913 pEnd = _tcschr(pItem, _T('\n'));
914 if (pEnd != NULL)
915 *pEnd = 0;
916 StrStrip(pItem);
917 if (!AddExternalParameter(pItem, TRUE, FALSE))
918 nxlog_write(MSG_ADD_EXT_PARAM_FAILED, EVENTLOG_WARNING_TYPE, "s", pItem);
919 }
920 free(m_pszShExtParamList);
921 }
922
923 // Parse external lists
924 if (m_pszExtListsList != NULL)
925 {
926 for(pItem = pEnd = m_pszExtListsList; pEnd != NULL && *pItem != 0; pItem = pEnd + 1)
927 {
928 pEnd = _tcschr(pItem, _T('\n'));
929 if (pEnd != NULL)
930 *pEnd = 0;
931 StrStrip(pItem);
932 if (!AddExternalParameter(pItem, FALSE, TRUE))
933 nxlog_write(MSG_ADD_EXT_PARAM_FAILED, EVENTLOG_WARNING_TYPE, "s", pItem);
934 }
935 free(m_pszExtListsList);
936 }
937
938 // Parse external parameters providers list
939 if (m_pszParamProviderList != NULL)
940 {
941 for(pItem = pEnd = m_pszParamProviderList; pEnd != NULL && *pItem != 0; pItem = pEnd + 1)
942 {
943 pEnd = _tcschr(pItem, _T('\n'));
944 if (pEnd != NULL)
945 *pEnd = 0;
946 StrStrip(pItem);
947 if (!AddParametersProvider(pItem))
948 nxlog_write(MSG_ADD_PARAM_PROVIDER_FAILED, EVENTLOG_WARNING_TYPE, "s", pItem);
949 }
950 free(m_pszParamProviderList);
951 }
952
953 // Parse external subagents list
954 if (!(g_dwFlags & AF_SUBAGENT_LOADER) && (m_pszExtSubagentList != NULL))
955 {
956 for(pItem = pEnd = m_pszExtSubagentList; pEnd != NULL && *pItem != 0; pItem = pEnd + 1)
957 {
958 pEnd = _tcschr(pItem, _T('\n'));
959 if (pEnd != NULL)
960 *pEnd = 0;
961 StrStrip(pItem);
962 if (!AddExternalSubagent(pItem))
963 nxlog_write(MSG_ADD_EXTERNAL_SUBAGENT_FAILED, EVENTLOG_WARNING_TYPE, "s", pItem);
964 }
965 free(m_pszExtSubagentList);
966 }
967
968 // Parse application agents list
969 if (!(g_dwFlags & AF_SUBAGENT_LOADER) && (m_pszAppAgentList != NULL))
970 {
971 for(pItem = pEnd = m_pszAppAgentList; pEnd != NULL && *pItem != 0; pItem = pEnd + 1)
972 {
973 pEnd = _tcschr(pItem, _T('\n'));
974 if (pEnd != NULL)
975 *pEnd = 0;
976 StrStrip(pItem);
977 RegisterApplicationAgent(pItem);
978 }
979 free(m_pszAppAgentList);
980 }
981
982 ThreadSleep(1);
983
984 // If StartupDelay is greater than zero, then wait
985 if (g_dwStartupDelay > 0)
986 {
987 if (g_dwFlags & AF_DAEMON)
988 {
989 ThreadSleep(g_dwStartupDelay);
990 }
991 else
992 {
993 UINT32 i;
994
995 _tprintf(_T("XXXXXX%*s]\rWAIT ["), g_dwStartupDelay, _T(" "));
996 fflush(stdout);
997 for(i = 0; i < g_dwStartupDelay; i++)
998 {
999 ThreadSleep(1);
1000 _puttc(_T('.'), stdout);
1001 fflush(stdout);
1002 }
1003 _tprintf(_T("\n"));
1004 }
1005 }
1006
1007 StartParamProvidersPoller();
1008
1009 // Agent start time
1010 g_tmAgentStartTime = time(NULL);
1011
1012 s_eventSenderThread = ThreadCreateEx(TrapSender, 0, NULL);
1013
1014 if (g_dwFlags & AF_ENABLE_SNMP_TRAP_PROXY)
1015 {
1016 s_snmpTrapSenderThread = ThreadCreateEx(SNMPTrapSender, 0, NULL);
1017 s_snmpTrapReceiverThread = ThreadCreateEx(SNMPTrapReceiver, 0, NULL);
1018 }
1019
1020 if (g_dwFlags & AF_ENABLE_SYSLOG_PROXY)
1021 {
1022 s_syslogSenderThread = ThreadCreateEx(SyslogSender, 0, NULL);
1023 s_syslogReceiverThread = ThreadCreateEx(SyslogReceiver, 0, NULL);
1024 }
1025
1026 if (g_dwFlags & AF_SUBAGENT_LOADER)
1027 {
1028 s_masterAgentListenerThread = ThreadCreateEx(MasterAgentListener, 0, NULL);
1029 }
1030 else
1031 {
1032 // Start network listener and session watchdog
1033 StartLocalDataCollector();
1034 s_listenerThread = ThreadCreateEx(ListenerThread, 0, NULL);
1035 s_sessionWatchdogThread = ThreadCreateEx(SessionWatchdog, 0, NULL);
1036 StartPushConnector();
1037 StartStorageDiscoveryConnector();
1038 StartSessionAgentConnector();
1039 if (g_dwFlags & AF_ENABLE_CONTROL_CONNECTOR)
1040 {
1041 StartControlConnector();
1042 }
1043
1044 if (g_dwFlags & AF_REGISTER)
1045 {
1046 RegisterOnServer(g_szRegistrar);
1047 }
1048
1049 s_tunnelManagerThread = ThreadCreateEx(TunnelManager, 0, NULL);
1050 }
1051
1052 #if defined(_WIN32)
1053 s_shutdownCondition = ConditionCreate(TRUE);
1054 #endif
1055 ThreadSleep(1);
1056
1057 // Start watchdog process
1058 if (!(g_dwFlags & AF_SUBAGENT_LOADER))
1059 {
1060 if (g_dwFlags & AF_ENABLE_WATCHDOG)
1061 StartWatchdog();
1062 }
1063
1064 // Delete file used for upgrade if exists
1065 TCHAR upgradeFileName[MAX_PATH];
1066 ReadRegistryAsString(_T("upgrade.file"), upgradeFileName, MAX_PATH, _T(""));
1067 if(upgradeFileName[0] != 0)
1068 {
1069 _tremove(upgradeFileName);
1070 DeleteRegistryEntry(_T("upgrade.file"));
1071 }
1072
1073 //Update policy inventory according to files that exist on file system
1074 UpdatePolicyInventory();
1075
1076 return TRUE;
1077 }
1078
1079 /**
1080 * Shutdown agent
1081 */
1082 void Shutdown()
1083 {
1084 DebugPrintf(INVALID_INDEX, 2, _T("Shutdown() called"));
1085 if (g_dwFlags & AF_ENABLE_WATCHDOG)
1086 StopWatchdog();
1087
1088 g_dwFlags |= AF_SHUTDOWN;
1089 ConditionSet(s_subAgentsStopCondition);
1090
1091 if (g_dwFlags & AF_SUBAGENT_LOADER)
1092 {
1093 // TODO: shall we inform master agent listener about shutdown?
1094 //ThreadJoin(s_masterAgentListenerThread);
1095 }
1096 else
1097 {
1098 ShutdownLocalDataCollector();
1099 ShutdownTrapSender();
1100 ThreadJoin(s_sessionWatchdogThread);
1101 ThreadJoin(s_listenerThread);
1102 ThreadJoin(s_tunnelManagerThread);
1103 }
1104 ThreadJoin(s_eventSenderThread);
1105 if (g_dwFlags & AF_ENABLE_SNMP_TRAP_PROXY)
1106 {
1107 ShutdownSNMPTrapSender();
1108 ThreadJoin(s_snmpTrapReceiverThread);
1109 ThreadJoin(s_snmpTrapSenderThread);
1110 }
1111 if (g_dwFlags & AF_ENABLE_SYSLOG_PROXY)
1112 {
1113 ShutdownSyslogSender();
1114 ThreadJoin(s_syslogReceiverThread);
1115 ThreadJoin(s_syslogSenderThread);
1116 }
1117
1118 DestroySessionList();
1119 MsgWaitQueue::shutdown();
1120
1121 if (g_dwFlags & AF_ENABLE_SNMP_PROXY)
1122 {
1123 ThreadPoolDestroy(g_snmpProxyThreadPool);
1124 }
1125
1126 UnloadAllSubAgents();
1127 CloseLocalDatabase();
1128 nxlog_write(MSG_AGENT_STOPPED, EVENTLOG_INFORMATION_TYPE, NULL);
1129 nxlog_close();
1130
1131 delete g_config;
1132
1133 // Notify main thread about shutdown
1134 #ifdef _WIN32
1135 ConditionSet(s_shutdownCondition);
1136 #endif
1137
1138 // Remove PID file
1139 #if !defined(_WIN32)
1140 _tremove(g_szPidFile);
1141 #endif
1142 }
1143
1144 /**
1145 * Common Main()
1146 */
1147 void Main()
1148 {
1149 nxlog_write(MSG_AGENT_STARTED, NXLOG_INFO, NULL);
1150
1151 if (g_dwFlags & AF_DAEMON)
1152 {
1153 #if defined(_WIN32)
1154 ConditionWait(s_shutdownCondition, INFINITE);
1155 #else
1156 StartMainLoop(SignalHandler, NULL);
1157 #endif
1158 }
1159 else
1160 {
1161 #if defined(_WIN32)
1162 if (g_dwFlags & AF_HIDE_WINDOW)
1163 {
1164 HWND hWnd;
1165
1166 hWnd = GetConsoleHWND();
1167 if (hWnd != NULL)
1168 ShowWindow(hWnd, SW_HIDE);
1169 ConditionWait(s_shutdownCondition, INFINITE);
1170 ThreadSleep(1);
1171 }
1172 else
1173 {
1174 _tprintf(_T("Agent running. Press ESC to shutdown.\n"));
1175 while(1)
1176 {
1177 if (_getch() == 27)
1178 break;
1179 }
1180 _tprintf(_T("Agent shutting down...\n"));
1181 Shutdown();
1182 }
1183 #else
1184 _tprintf(_T("Agent running. Press Ctrl+C to shutdown.\n"));
1185 StartMainLoop(SignalHandler, NULL);
1186 _tprintf(_T("\nStopping agent...\n"));
1187 #endif
1188 }
1189 }
1190
1191 /**
1192 * Do necessary actions on agent restart
1193 */
1194 static void DoRestartActions(UINT32 dwOldPID)
1195 {
1196 #if defined(_WIN32)
1197 if (dwOldPID == 0)
1198 {
1199 // Service
1200 StopAgentService();
1201 WaitForService(SERVICE_STOPPED);
1202 StartAgentService();
1203 ExitProcess(0);
1204 }
1205 else
1206 {
1207 HANDLE hProcess;
1208
1209 hProcess = OpenProcess(SYNCHRONIZE | PROCESS_TERMINATE, FALSE, dwOldPID);
1210 if (hProcess != NULL)
1211 {
1212 if (WaitForSingleObject(hProcess, 60000) == WAIT_TIMEOUT)
1213 {
1214 TerminateProcess(hProcess, 0);
1215 }
1216 CloseHandle(hProcess);
1217 }
1218 }
1219 #else
1220 int i;
1221
1222 kill(dwOldPID, SIGTERM);
1223 for(i = 0; i < 30; i++)
1224 {
1225 sleep(2);
1226 if (kill(dwOldPID, SIGCONT) == -1)
1227 break;
1228 }
1229
1230 // Kill previous instance of agent if it's still running
1231 if (i == 30)
1232 kill(dwOldPID, SIGKILL);
1233 #endif
1234 }
1235
1236 /**
1237 * Create configuration file
1238 */
1239 static int CreateConfig(const char *pszServer, const char *pszLogFile, const char *pszFileStore,
1240 const char *configIncludeDir, int iNumSubAgents, char **ppszSubAgentList)
1241 {
1242 FILE *fp;
1243 time_t currTime;
1244 int i;
1245
1246 if (_taccess(g_szConfigFile, 0) == 0)
1247 return 0; // File already exist, we shouldn't overwrite it
1248
1249 fp = _tfopen(g_szConfigFile, _T("w"));
1250 if (fp != NULL)
1251 {
1252 currTime = time(NULL);
1253 _ftprintf(fp, _T("#\n# NetXMS agent configuration file\n# Created by agent installer at %s#\n\n"),
1254 _tctime(&currTime));
1255 _ftprintf(fp, _T("MasterServers = %hs\nConfigIncludeDir = %hs\nLogFile = %hs\nFileStore = %hs\n"),
1256 pszServer, configIncludeDir, pszLogFile, pszFileStore);
1257 for(i = 0; i < iNumSubAgents; i++)
1258 _ftprintf(fp, _T("SubAgent = %hs\n"), ppszSubAgentList[i]);
1259 fclose(fp);
1260 }
1261 return (fp != NULL) ? 0 : 2;
1262 }
1263
1264 /**
1265 * Init config
1266 */
1267 static void InitConfig()
1268 {
1269 g_config = new Config();
1270 g_config->setTopLevelTag(_T("config"));
1271
1272 // Set default data directory on Windows
1273 #ifdef _WIN32
1274 if (SHGetFolderPath(NULL, CSIDL_LOCAL_APPDATA, NULL, SHGFP_TYPE_CURRENT, g_szDataDirectory) == S_OK)
1275 {
1276 _tcscat(g_szDataDirectory, _T("\\nxagentd"));
1277 }
1278 #endif
1279 }
1280
1281 /**
1282 * Initiate shutdown of connected external subagents
1283 */
1284 static void InitiateExtSubagentShutdown()
1285 {
1286 NXCPMessage msg;
1287 msg.setCode(CMD_SHUTDOWN);
1288 if (SendControlMessage(&msg))
1289 _tprintf(_T("Control message sent successfully to master agent\n"));
1290 else
1291 _tprintf(_T("ERROR: Unable to send control message to master agent\n"));
1292 }
1293
1294 #ifndef _WIN32
1295
1296 /**
1297 * Get user ID
1298 */
1299 static int GetUserId(char *name)
1300 {
1301 char *eptr;
1302 int id = (int)strtol(name, &eptr, 10);
1303 if (*eptr == 0)
1304 return id;
1305
1306 #if HAVE_GETPWNAM
1307 struct passwd *p = getpwnam(name);
1308 if (p == NULL)
1309 {
1310 _tprintf(_T("Invalid user ID \"%hs\"\n"), name);
1311 return 0;
1312 }
1313 return p->pw_uid;
1314 #else
1315 _tprintf(_T("Invalid user ID \"%hs\"\n"), name);
1316 return 0;
1317 #endif
1318 }
1319
1320 /**
1321 * Get group ID
1322 */
1323 static int GetGroupId(char *name)
1324 {
1325 char *eptr;
1326 int id = (int)strtol(name, &eptr, 10);
1327 if (*eptr == 0)
1328 return id;
1329
1330 #if HAVE_GETGRNAM
1331 struct group *g = getgrnam(name);
1332 if (g == NULL)
1333 {
1334 _tprintf(_T("Invalid group ID \"%hs\"\n"), name);
1335 return 0;
1336 }
1337 return g->gr_gid;
1338 #else
1339 _tprintf(_T("Invalid group ID \"%hs\"\n"), name);
1340 return 0;
1341 #endif
1342 }
1343
1344 #endif
1345
1346 /**
1347 * Application entry point
1348 */
1349 int main(int argc, char *argv[])
1350 {
1351 int ch, iExitCode = 0, iAction = ACTION_RUN_AGENT;
1352 BOOL bRestart = FALSE;
1353 UINT32 dwOldPID, dwMainPID;
1354 char *eptr;
1355 #ifdef _WIN32
1356 TCHAR szModuleName[MAX_PATH];
1357 HKEY hKey;
1358 DWORD dwSize;
1359 #else
1360 TCHAR *pszEnv;
1361 int uid = 0, gid = 0;
1362 #endif
1363
1364 InitNetXMSProcess();
1365
1366 #if defined(__sun) || defined(_AIX) || defined(__hpux)
1367 signal(SIGPIPE, SIG_IGN);
1368 signal(SIGHUP, SIG_IGN);
1369 signal(SIGQUIT, SIG_IGN);
1370 signal(SIGUSR1, SIG_IGN);
1371 signal(SIGUSR2, SIG_IGN);
1372 #endif
1373
1374 // Check for alternate config file location
1375 #ifdef _WIN32
1376 if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, _T("Software\\NetXMS\\Agent"), 0, KEY_QUERY_VALUE, &hKey) == ERROR_SUCCESS)
1377 {
1378 dwSize = MAX_PATH * sizeof(TCHAR);
1379 RegQueryValueEx(hKey, _T("ConfigFile"), NULL, NULL, (BYTE *)g_szConfigFile, &dwSize);
1380 dwSize = MAX_PATH * sizeof(TCHAR);
1381 RegQueryValueEx(hKey, _T("ConfigIncludeDir"), NULL, NULL, (BYTE *)g_szConfigIncludeDir, &dwSize);
1382 RegCloseKey(hKey);
1383 }
1384 #else
1385 pszEnv = _tgetenv(_T("NXAGENTD_CONFIG"));
1386 if (pszEnv != NULL)
1387 nx_strncpy(g_szConfigFile, pszEnv, MAX_PATH);
1388
1389 pszEnv = _tgetenv(_T("NXAGENTD_CONFIG_D"));
1390 if (pszEnv != NULL)
1391 nx_strncpy(g_szConfigIncludeDir, pszEnv, MAX_PATH);
1392 #endif
1393
1394 // Parse command line
1395 if (argc == 1)
1396 iAction = ACTION_HELP;
1397 opterr = 1;
1398 while((ch = getopt(argc, argv, VALID_OPTIONS)) != -1)
1399 {
1400 switch(ch)
1401 {
1402 case 'c': // Configuration file
1403 #ifdef UNICODE
1404 MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, optarg, -1, g_szConfigFile, MAX_PATH);
1405 g_szConfigFile[MAX_PATH - 1] = 0;
1406 #else
1407 nx_strncpy(g_szConfigFile, optarg, MAX_PATH);
1408 #endif
1409 break;
1410 case 'C': // Configuration check only
1411 iAction = ACTION_CHECK_CONFIG;
1412 break;
1413 case 'd': // Run as daemon
1414 g_dwFlags |= AF_DAEMON;
1415 break;
1416 case 'D': // Turn on debug output
1417 s_debugLevel = strtoul(optarg, &eptr, 0);
1418 if ((*eptr != 0) || (s_debugLevel > 9))
1419 {
1420 fprintf(stderr, "Invalid debug level: %s\n", optarg);
1421 iAction = -1;
1422 iExitCode = 1;
1423 }
1424 break;
1425 case 'f': // Run in foreground
1426 g_dwFlags &= ~AF_DAEMON;
1427 break;
1428 #ifndef _WIN32
1429 case 'g': // set group ID
1430 gid = GetGroupId(optarg);
1431 break;
1432 #endif
1433 case 'h': // Display help and exit
1434 iAction = ACTION_HELP;
1435 break;
1436 #ifdef _WIN32
1437 case 'H': // Hide window
1438 g_dwFlags |= AF_HIDE_WINDOW;
1439 break;
1440 #endif
1441 case 'K': // Shutdown external sub-agents
1442 iAction = ACTION_SHUTDOWN_EXT_AGENTS;
1443 break;
1444 #ifndef _WIN32
1445 case 'p': // PID file
1446 #ifdef UNICODE
1447 MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, optarg, -1, g_szPidFile, MAX_PATH);
1448 g_szPidFile[MAX_PATH - 1] = 0;
1449 #else
1450 nx_strncpy(g_szPidFile, optarg, MAX_PATH);
1451 #endif
1452 break;
1453 #endif
1454 case 'M':
1455 g_dwFlags |= AF_CENTRAL_CONFIG;
1456 #ifdef UNICODE
1457 MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, optarg, -1, g_szConfigServer, MAX_DB_STRING);
1458 g_szConfigServer[MAX_DB_STRING - 1] = 0;
1459 #else
1460 nx_strncpy(g_szConfigServer, optarg, MAX_DB_STRING);
1461 #endif
1462 break;
1463 case 'r':
1464 g_dwFlags |= AF_REGISTER;
1465 #ifdef UNICODE
1466 MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, optarg, -1, g_szRegistrar, MAX_DB_STRING);
1467 g_szRegistrar[MAX_DB_STRING - 1] = 0;
1468 #else
1469 nx_strncpy(g_szRegistrar, optarg, MAX_DB_STRING);
1470 #endif
1471 break;
1472 case 'P': // Platform suffix
1473 #ifdef UNICODE
1474 MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, optarg, -1, g_szPlatformSuffix, MAX_PSUFFIX_LENGTH);
1475 g_szPlatformSuffix[MAX_PSUFFIX_LENGTH - 1] = 0;
1476 #else
1477 nx_strncpy(g_szPlatformSuffix, optarg, MAX_PSUFFIX_LENGTH);
1478 #endif
1479 break;
1480 #ifndef _WIN32
1481 case 'u': // set user ID
1482 uid = GetUserId(optarg);
1483 break;
1484 #endif
1485 case 'v': // Print version and exit
1486 _tprintf(_T("NetXMS Core Agent Version ") AGENT_VERSION_STRING _T(" Build ") NETXMS_VERSION_BUILD_STRING _T(" (") NETXMS_BUILD_TAG _T(")") IS_UNICODE_BUILD_STRING _T("\n"));
1487 iAction = ACTION_NONE;
1488 break;
1489 case 'W': // Watchdog process
1490 iAction = ACTION_RUN_WATCHDOG;
1491 dwMainPID = strtoul(optarg, NULL, 10);
1492 break;
1493 case 'X': // Agent is being restarted
1494 bRestart = TRUE;
1495 dwOldPID = strtoul(optarg, NULL, 10);
1496 break;
1497 case 'Z': // Create configuration file
1498 iAction = ACTION_CREATE_CONFIG;
1499 #ifdef UNICODE
1500 MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, optarg, -1, g_szConfigFile, MAX_PATH);
1501 g_szConfigFile[MAX_PATH - 1] = 0;
1502 #else
1503 nx_strncpy(g_szConfigFile, optarg, MAX_PATH);
1504 #endif
1505 break;
1506 #ifdef _WIN32
1507 case 'i':
1508 g_dwFlags |= AF_INTERACTIVE_SERVICE;
1509 break;
1510 case 'I': // Install Windows service
1511 iAction = ACTION_INSTALL_SERVICE;
1512 break;
1513 case 'R': // Remove Windows service
1514 iAction = ACTION_REMOVE_SERVICE;
1515 break;
1516 case 's': // Start Windows service
1517 iAction = ACTION_START_SERVICE;
1518 break;
1519 case 'S': // Stop Windows service
1520 iAction = ACTION_STOP_SERVICE;
1521 break;
1522 case 'E': // Install Windows event source
1523 iAction = ACTION_INSTALL_EVENT_SOURCE;
1524 break;
1525 case 'U': // Remove Windows event source
1526 iAction = ACTION_REMOVE_EVENT_SOURCE;
1527 break;
1528 case 'e': // Event source name
1529 #ifdef UNICODE
1530 MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, optarg, -1, g_windowsEventSourceName, MAX_PATH);
1531 g_windowsEventSourceName[MAX_PATH - 1] = 0;
1532 #else
1533 nx_strncpy(g_windowsEventSourceName, optarg, MAX_PATH);
1534 #endif
1535 break;
1536 case 'n': // Service name
1537 #ifdef UNICODE
1538 MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, optarg, -1, g_windowsServiceName, MAX_PATH);
1539 g_windowsServiceName[MAX_PATH - 1] = 0;
1540 #else
1541 nx_strncpy(g_windowsServiceName, optarg, MAX_PATH);
1542 #endif
1543 break;
1544 case 'N': // Service display name
1545 #ifdef UNICODE
1546 MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, optarg, -1, g_windowsServiceDisplayName, MAX_PATH);
1547 g_windowsServiceDisplayName[MAX_PATH - 1] = 0;
1548 #else
1549 nx_strncpy(g_windowsServiceDisplayName, optarg, MAX_PATH);
1550 #endif
1551 break;
1552 #endif
1553 case '?':
1554 iAction = ACTION_HELP;
1555 iExitCode = 1;
1556 break;
1557 default:
1558 break;
1559 }
1560 }
1561
1562 #if !defined(_WIN32)
1563 if (!_tcscmp(g_szConfigFile, _T("{search}")))
1564 {
1565 TCHAR path[MAX_PATH] = _T("");
1566 const TCHAR *homeDir = _tgetenv(_T("NETXMS_HOME"));
1567 if (homeDir != NULL)
1568 {
1569 _sntprintf(path, MAX_PATH, _T("%s/etc/nxagentd.conf"), homeDir);
1570 }
1571 if ((path[0] != 0) && (_taccess(path, 4) == 0))
1572 {
1573 _tcscpy(g_szConfigFile, path);
1574 }
1575 else if (_taccess(PREFIX _T("/etc/nxagentd.conf"), 4) == 0)
1576 {
1577 _tcscpy(g_szConfigFile, PREFIX _T("/etc/nxagentd.conf"));
1578 }
1579 else if (_taccess(_T("/Database/etc/nxagentd.conf"), 4) == 0) // for ZeroShell
1580 {
1581 _tcscpy(g_szConfigFile, _T("/Database/etc/nxagentd.conf"));
1582 }
1583 else if (_taccess(_T("/usr/etc/nxagentd.conf"), 4) == 0)
1584 {
1585 _tcscpy(g_szConfigFile, _T("/usr/etc/nxagentd.conf"));
1586 }
1587 else
1588 {
1589 _tcscpy(g_szConfigFile, _T("/etc/nxagentd.conf"));
1590 }
1591 }
1592 if (!_tcscmp(g_szConfigIncludeDir, _T("{search}")))
1593 {
1594 TCHAR path[MAX_PATH] = _T("");
1595 const TCHAR *homeDir = _tgetenv(_T("NETXMS_HOME"));
1596 if (homeDir != NULL)
1597 {
1598 _sntprintf(path, MAX_PATH, _T("%s/etc/nxagentd.conf.d"), homeDir);
1599 }
1600 if ((path[0] != 0) && (_taccess(path, 4) == 0))
1601 {
1602 _tcscpy(g_szConfigIncludeDir, path);
1603 }
1604 else if (_taccess(PREFIX _T("/etc/nxagentd.conf.d"), 4) == 0)
1605 {
1606 _tcscpy(g_szConfigIncludeDir, PREFIX _T("/etc/nxagentd.conf.d"));
1607 }
1608 else if (_taccess(_T("/Database/etc/nxagentd.conf.d"), 4) == 0)
1609 {
1610 _tcscpy(g_szConfigIncludeDir, _T("/Database/etc/nxagentd.conf.d"));
1611 }
1612 else if (_taccess(_T("/usr/etc/nxagentd.conf.d"), 4) == 0)
1613 {
1614 _tcscpy(g_szConfigIncludeDir, _T("/usr/etc/nxagentd.conf.d"));
1615 }
1616 else
1617 {
1618 _tcscpy(g_szConfigIncludeDir, _T("/etc/nxagentd.conf.d"));
1619 }
1620 }
1621 #else
1622 if (!_tcscmp(g_szConfigFile, _T("{search}")))
1623 {
1624 TCHAR path[MAX_PATH];
1625 GetNetXMSDirectory(nxDirEtc, path);
1626 _tcscat(path, _T("\\nxagentd.conf"));
1627 if (_taccess(path, 4) == 0)
1628 {
1629 _tcscpy(g_szConfigFile, path);
1630 }
1631 else
1632 {
1633 _tcscpy(g_szConfigFile, _T("C:\\nxagentd.conf"));
1634 }
1635 }
1636 if (!_tcscmp(g_szConfigIncludeDir, _T("{search}")))
1637 {
1638 TCHAR path[MAX_PATH];
1639 GetNetXMSDirectory(nxDirEtc, path);
1640 _tcscat(path, _T("\\nxagentd.conf.d"));
1641 if (_taccess(path, 4) == 0)
1642 {
1643 _tcscpy(g_szConfigIncludeDir, path);
1644 }
1645 else
1646 {
1647 _tcscpy(g_szConfigIncludeDir, _T("C:\\nxagentd.conf.d"));
1648 }
1649 }
1650 #endif
1651
1652 if (bRestart)
1653 DoRestartActions(dwOldPID);
1654
1655 InitConfig();
1656
1657 // Do requested action
1658 switch(iAction)
1659 {
1660 case ACTION_RUN_AGENT:
1661 // Set default value for session idle timeout based on
1662 // connect() timeout, if possible
1663 #if HAVE_SYSCTLBYNAME && !defined(_IPSO)
1664 {
1665 LONG nVal;
1666 size_t nSize;
1667
1668 nSize = sizeof(nVal);
1669 if (sysctlbyname("net.inet.tcp.keepinit", &nVal, &nSize, NULL, 0) == 0)
1670 {
1671 g_dwIdleTimeout = nVal / 1000 + 15;
1672 }
1673 }
1674 #endif
1675
1676 if (g_dwFlags & AF_CENTRAL_CONFIG)
1677 {
1678 if (s_debugLevel > 0)
1679 _tprintf(_T("Downloading configuration from %s...\n"), g_szConfigServer);
1680 if (DownloadConfig(g_szConfigServer))
1681 {
1682 if (s_debugLevel > 0)
1683 _tprintf(_T("Configuration downloaded successfully\n"));
1684 }
1685 else
1686 {
1687 if (s_debugLevel > 0)
1688 _tprintf(_T("Configuration download failed\n"));
1689 }
1690 }
1691
1692 if (g_config->loadConfig(g_szConfigFile, _T("agent")))
1693 {
1694 const TCHAR *dir = g_config->getValue(_T("/agent/ConfigIncludeDir"));
1695 if (dir != NULL)
1696 nx_strncpy(g_szConfigIncludeDir, dir, MAX_PATH);
1697 g_config->loadConfigDirectory(g_szConfigIncludeDir, _T("agent"));
1698 if (g_config->parseTemplate(_T("agent"), m_cfgTemplate))
1699 {
1700 DecryptPassword(_T("netxms"), g_szSharedSecret, g_szSharedSecret, MAX_SECRET_LENGTH);
1701
1702 // try to guess executable path
1703 #ifdef _WIN32
1704 GetModuleFileName(GetModuleHandle(NULL), s_executableName, MAX_PATH);
1705 #else
1706 #ifdef UNICODE
1707 char __buffer[PATH_MAX];
1708 #else
1709 #define __buffer s_executableName
1710 #endif
1711 if (realpath(argv[0], __buffer) == NULL)
1712 {
1713 // fallback
1714 TCHAR *path = _tgetenv(_T("NETXMS_HOME"));
1715 if (path != NULL)
1716 {
1717 nx_strncpy(s_executableName, path, sizeof(s_executableName) / sizeof(s_executableName[0]));
1718 }
1719 else
1720 {
1721 nx_strncpy(s_executableName, PREFIX, sizeof(s_executableName) / sizeof(s_executableName[0]));
1722 }
1723 _tcsncat(s_executableName, _T("/bin/nxagentd"), sizeof(s_executableName) / sizeof(s_executableName[0]));
1724 }
1725 else
1726 {
1727 #ifdef UNICODE
1728 int len = strlen(__buffer);
1729 MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, __buffer, len, s_executableName, len);
1730 #endif
1731 }
1732 #endif
1733
1734 // Set exception handler
1735 #ifdef _WIN32
1736 if (g_dwFlags & AF_CATCH_EXCEPTIONS)
1737 SetExceptionHandler(SEHServiceExceptionHandler, SEHServiceExceptionDataWriter, s_dumpDir,
1738 _T("nxagentd"), MSG_EXCEPTION, g_dwFlags & AF_WRITE_FULL_DUMP, !(g_dwFlags & AF_DAEMON));
1739 __try {
1740 #endif
1741 if ((!_tcsicmp(g_szLogFile, _T("{syslog}"))) ||
1742 (!_tcsicmp(g_szLogFile, _T("{eventlog}"))))
1743 g_dwFlags |= AF_USE_SYSLOG;
1744
1745 #ifdef _WIN32
1746 if (g_dwFlags & AF_DAEMON)
1747 {
1748 InitService();
1749 }
1750 else
1751 {
1752 if (Initialize())
1753 {
1754 Main();
1755 }
1756 else
1757 {
1758 ConsolePrintf(_T("Agent initialization failed\n"));
1759 nxlog_close();
1760 iExitCode = 3;
1761 }
1762 }
1763 #else /* _WIN32 */
1764 if (g_dwFlags & AF_DAEMON)
1765 {
1766 if (daemon(0, 0) == -1)
1767 {
1768 perror("Unable to setup itself as a daemon");
1769 iExitCode = 4;
1770 }
1771 }
1772 if (iExitCode == 0)
1773 {
1774 #ifndef _WIN32
1775 if (gid == 0)
1776 {
1777 const TCHAR *v = g_config->getValue(_T("/agent/GroupId"));
1778 if (v != NULL)
1779 {
1780 #ifdef UNICODE
1781 char vmb[64];
1782 WideCharToMultiByte(CP_ACP, WC_DEFAULTCHAR | WC_COMPOSITECHECK, v, -1, vmb, 64, NULL, NULL);
1783 vmb[63] = 0;
1784 gid = GetGroupId(vmb);
1785 #else
1786 gid = GetGroupId(v);
1787 #endif
1788 }
1789 }
1790 if (uid == 0)
1791 {
1792 const TCHAR *v = g_config->getValue(_T("/agent/UserId"));
1793 if (v != NULL)
1794 {
1795 #ifdef UNICODE
1796 char vmb[64];
1797 WideCharToMultiByte(CP_ACP, WC_DEFAULTCHAR | WC_COMPOSITECHECK, v, -1, vmb, 64, NULL, NULL);
1798 vmb[63] = 0;
1799 uid = GetUserId(vmb);
1800 #else
1801 uid = GetUserId(v);
1802 #endif
1803 }
1804 }
1805
1806 if (gid > 0)
1807 {
1808 if (setgid(gid) != 0)
1809 _tprintf(_T("setgid(%d) call failed (%s)\n"), gid, _tcserror(errno));
1810 }
1811 if (uid > 0)
1812 {
1813 if (setuid(uid) != 0)
1814 _tprintf(_T("setuid(%d) call failed (%s)\n"), uid, _tcserror(errno));
1815 }
1816 #endif
1817
1818 s_pid = getpid();
1819 if (Initialize())
1820 {
1821 FILE *fp;
1822
1823 // Write PID file
1824 fp = _tfopen(g_szPidFile, _T("w"));
1825 if (fp != NULL)
1826 {
1827 _ftprintf(fp, _T("%d"), s_pid);
1828 fclose(fp);
1829 }
1830 Main();
1831 Shutdown();
1832 }
1833 else
1834 {
1835 ConsolePrintf(_T("Agent initialization failed\n"));
1836 nxlog_close();
1837 iExitCode = 3;
1838 }
1839 }
1840 #endif /* _WIN32 */
1841
1842 #if defined(_WIN32)
1843 if (s_shutdownCondition != INVALID_CONDITION_HANDLE)
1844 ConditionDestroy(s_shutdownCondition);
1845 #endif
1846 #ifdef _WIN32
1847 LIBNETXMS_EXCEPTION_HANDLER
1848 #endif
1849 }
1850 else
1851 {
1852 ConsolePrintf(_T("Error parsing configuration file\n"));
1853 iExitCode = 2;
1854 }
1855 }
1856 else
1857 {
1858 ConsolePrintf(_T("Error loading configuration file\n"));
1859 iExitCode = 2;
1860 }
1861 break;
1862 case ACTION_CHECK_CONFIG:
1863 {
1864 bool validConfig = g_config->loadConfig(g_szConfigFile, _T("agent"), false);
1865 if (validConfig)
1866 {
1867 const TCHAR *dir = g_config->getValue(_T("/agent/ConfigIncludeDir"));
1868 if (dir != NULL)
1869 {
1870 validConfig = g_config->loadConfigDirectory(dir, _T("agent"), false);
1871 if (!validConfig)
1872 {
1873 ConsolePrintf(_T("Error reading additional configuration files from \"%s\"\n"), dir);
1874 }
1875 }
1876 }
1877
1878 if (validConfig)
1879 {
1880 g_config->print(stdout);
1881 validConfig = g_config->parseTemplate(_T("agent"), m_cfgTemplate);
1882 }
1883
1884 if (!validConfig)
1885 {
1886 ConsolePrintf(_T("Configuration file check failed\n"));
1887 iExitCode = 2;
1888 }
1889 }
1890 break;
1891 case ACTION_RUN_WATCHDOG:
1892 iExitCode = WatchdogMain(dwMainPID);
1893 break;
1894 case ACTION_CREATE_CONFIG:
1895 iExitCode = CreateConfig(CHECK_NULL_A(argv[optind]), CHECK_NULL_A(argv[optind + 1]),
1896 CHECK_NULL_A(argv[optind + 2]), CHECK_NULL_A(argv[optind + 3]),
1897 argc - optind - 4, &argv[optind + 4]);
1898 break;
1899 case ACTION_SHUTDOWN_EXT_AGENTS:
1900 InitiateExtSubagentShutdown();
1901 iExitCode = 0;
1902 break;
1903 #ifdef _WIN32
1904 case ACTION_INSTALL_SERVICE:
1905 GetModuleFileName(GetModuleHandle(NULL), szModuleName, MAX_PATH);
1906 InstallService(szModuleName, g_szConfigFile, s_debugLevel);
1907 break;
1908 case ACTION_REMOVE_SERVICE:
1909 RemoveService();
1910 break;
1911 case ACTION_INSTALL_EVENT_SOURCE:
1912 GetModuleFileName(GetModuleHandle(NULL), szModuleName, MAX_PATH);
1913 InstallEventSource(szModuleName);
1914 break;
1915 case ACTION_REMOVE_EVENT_SOURCE:
1916 RemoveEventSource();
1917 break;
1918 case ACTION_START_SERVICE:
1919 StartAgentService();
1920 break;
1921 case ACTION_STOP_SERVICE:
1922 StopAgentService();
1923 break;
1924 #endif
1925 case ACTION_HELP:
1926 _fputts(m_szHelpText, stdout);
1927 break;
1928 default:
1929 break;
1930 }
1931
1932 return iExitCode;
1933 }