6 Try to set up function pointers.
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7 In this first implementation it is not an error if we can't load them
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8 because we aren't currently trying to load any functions which we
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9 absolutely need. If we later add some indispensible imports we can
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10 return non-zero here to force an application exit.
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12 HMODULE get_dll(const TCHAR *dll, unsigned long *error) {
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15 HMODULE ret = LoadLibrary(dll);
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17 *error = GetLastError();
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18 log_event(EVENTLOG_WARNING_TYPE, NSSM_EVENT_LOADLIBRARY_FAILED, dll, error_string(*error), 0);
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24 FARPROC get_import(HMODULE library, const char *function, unsigned long *error) {
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27 FARPROC ret = GetProcAddress(library, function);
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29 *error = GetLastError();
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30 TCHAR *function_name;
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33 mbstowcs_s(&buflen, NULL, 0, function, _TRUNCATE);
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34 function_name = (TCHAR *) HeapAlloc(GetProcessHeap(), 0, buflen * sizeof(TCHAR));
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35 if (function_name) mbstowcs_s(&buflen, function_name, buflen * sizeof(TCHAR), function, _TRUNCATE);
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37 function_name = (TCHAR *) function;
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39 if (*error != ERROR_PROC_NOT_FOUND) log_event(EVENTLOG_WARNING_TYPE, NSSM_EVENT_GETPROCADDRESS_FAILED, function_name, error_string(*error), 0);
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41 if (function_name) HeapFree(GetProcessHeap(), 0, function_name);
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49 unsigned long error;
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51 ZeroMemory(&imports, sizeof(imports));
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53 imports.kernel32 = get_dll(_T("kernel32.dll"), &error);
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54 if (imports.kernel32) {
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55 imports.AttachConsole = (AttachConsole_ptr) get_import(imports.kernel32, "AttachConsole", &error);
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56 if (! imports.AttachConsole) {
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57 if (error != ERROR_PROC_NOT_FOUND) return 2;
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60 imports.SleepConditionVariableCS = (SleepConditionVariableCS_ptr) get_import(imports.kernel32, "SleepConditionVariableCS", &error);
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61 if (! imports.SleepConditionVariableCS) {
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62 if (error != ERROR_PROC_NOT_FOUND) return 3;
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65 imports.WakeConditionVariable = (WakeConditionVariable_ptr) get_import(imports.kernel32, "WakeConditionVariable", &error);
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66 if (! imports.WakeConditionVariable) {
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67 if (error != ERROR_PROC_NOT_FOUND) return 4;
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70 else if (error != ERROR_MOD_NOT_FOUND) return 1;
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72 imports.advapi32 = get_dll(_T("advapi32.dll"), &error);
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73 if (imports.advapi32) {
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74 imports.CreateWellKnownSid = (CreateWellKnownSid_ptr) get_import(imports.advapi32, "CreateWellKnownSid", &error);
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75 if (! imports.CreateWellKnownSid) {
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76 if (error != ERROR_PROC_NOT_FOUND) return 6;
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78 imports.IsWellKnownSid = (IsWellKnownSid_ptr) get_import(imports.advapi32, "IsWellKnownSid", &error);
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79 if (! imports.IsWellKnownSid) {
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80 if (error != ERROR_PROC_NOT_FOUND) return 7;
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83 else if (error != ERROR_MOD_NOT_FOUND) return 5;
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88 void free_imports() {
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89 if (imports.kernel32) FreeLibrary(imports.kernel32);
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90 if (imports.advapi32) FreeLibrary(imports.advapi32);
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91 ZeroMemory(&imports, sizeof(imports));
\r