1 /*
2 * Copyright (c) 2014, 2020, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 #include "Platform.h"
27
28 #include "JavaVirtualMachine.h"
29 #include "WindowsPlatform.h"
30 #include "Package.h"
31 #include "Helpers.h"
32 #include "PlatformString.h"
33 #include "Macros.h"
34
35 #include <map>
36 #include <vector>
37 #include <regex>
38 #include <fstream>
39 #include <locale>
40 #include <codecvt>
41
42 using namespace std;
43
44 #define WINDOWS_JPACKAGE_TMP_DIR \
45 L"\\AppData\\Local\\Java\\JPackage\\tmp"
46
47 class Registry {
48 private:
49 HKEY FKey;
50 HKEY FOpenKey;
51 bool FOpen;
52
53 public:
54
55 Registry(HKEY Key) {
56 FOpen = false;
57 FKey = Key;
58 }
59
60 ~Registry() {
61 Close();
62 }
63
64 void Close() {
65 if (FOpen == true) {
66 RegCloseKey(FOpenKey);
67 }
68 }
69
70 bool Open(TString SubKey) {
71 bool result = false;
72 Close();
73
74 if (RegOpenKeyEx(FKey, SubKey.data(), 0, KEY_READ, &FOpenKey) ==
75 ERROR_SUCCESS) {
76 result = true;
77 }
78
79 return result;
80 }
81
82 std::list<TString> GetKeys() {
83 std::list<TString> result;
84 DWORD count;
85
86 if (RegQueryInfoKey(FOpenKey, NULL, NULL, NULL, NULL, NULL, NULL,
87 &count, NULL, NULL, NULL, NULL) == ERROR_SUCCESS) {
88
89 DWORD length = 255;
90 DynamicBuffer<TCHAR> buffer(length);
91 if (buffer.GetData() == NULL) {
92 return result;
93 }
94
95 for (unsigned int index = 0; index < count; index++) {
96 buffer.Zero();
97 DWORD status = RegEnumValue(FOpenKey, index, buffer.GetData(),
98 &length, NULL, NULL, NULL, NULL);
99
100 while (status == ERROR_MORE_DATA) {
101 length = length * 2;
102 if (!buffer.Resize(length)) {
103 return result;
104 }
105 status = RegEnumValue(FOpenKey, index, buffer.GetData(),
106 &length, NULL, NULL, NULL, NULL);
107 }
108
109 if (status == ERROR_SUCCESS) {
110 TString value = buffer.GetData();
111 result.push_back(value);
112 }
113 }
114 }
115
116 return result;
117 }
118
119 TString ReadString(TString Name) {
120 TString result;
121 DWORD length;
122 DWORD dwRet;
123 DynamicBuffer<wchar_t> buffer(0);
124 length = 0;
125
126 dwRet = RegQueryValueEx(FOpenKey, Name.data(), NULL, NULL, NULL,
127 &length);
128 if (dwRet == ERROR_MORE_DATA || dwRet == 0) {
129 if (!buffer.Resize(length + 1)) {
130 return result;
131 }
132 dwRet = RegQueryValueEx(FOpenKey, Name.data(), NULL, NULL,
133 (LPBYTE) buffer.GetData(), &length);
134 result = buffer.GetData();
135 }
136
137 return result;
138 }
139 };
140
141 WindowsPlatform::WindowsPlatform(void) : Platform() {
142 FMainThread = ::GetCurrentThreadId();
143 }
144
145 WindowsPlatform::~WindowsPlatform(void) {
146 }
147
148 TString WindowsPlatform::GetPackageAppDirectory() {
149 return FilePath::IncludeTrailingSeparator(
150 GetPackageRootDirectory()) + _T("app");
151 }
152
153 TString WindowsPlatform::GetPackageLauncherDirectory() {
154 return GetPackageRootDirectory();
155 }
156
157 TString WindowsPlatform::GetPackageRuntimeBinDirectory() {
158 return FilePath::IncludeTrailingSeparator(GetPackageRootDirectory()) + _T("runtime\\bin");
159 }
160
161 TCHAR* WindowsPlatform::ConvertStringToFileSystemString(TCHAR* Source,
162 bool &release) {
163 // Not Implemented.
164 return NULL;
165 }
166
167 TCHAR* WindowsPlatform::ConvertFileSystemStringToString(TCHAR* Source,
168 bool &release) {
169 // Not Implemented.
170 return NULL;
171 }
172
173 TString WindowsPlatform::GetPackageRootDirectory() {
174 TString result;
175 TString filename = GetModuleFileName();
176 return FilePath::ExtractFilePath(filename);
177 }
178
179 TString WindowsPlatform::GetAppDataDirectory() {
180 TString result;
181 TCHAR path[MAX_PATH];
182
183 if (SHGetFolderPath(NULL, CSIDL_APPDATA, NULL, 0, path) == S_OK) {
184 result = path;
185 }
186
187 return result;
188 }
189
190 TString WindowsPlatform::GetAppName() {
191 TString result = GetModuleFileName();
192 result = FilePath::ExtractFileName(result);
193 result = FilePath::ChangeFileExt(result, _T(""));
194 return result;
195 }
196
197 void WindowsPlatform::ShowMessage(TString title, TString description) {
198 MessageBox(NULL, description.data(),
199 !title.empty() ? title.data() : description.data(),
200 MB_ICONERROR | MB_OK);
201 }
202
203 void WindowsPlatform::ShowMessage(TString description) {
204 TString appname = GetModuleFileName();
205 appname = FilePath::ExtractFileName(appname);
206 MessageBox(NULL, description.data(), appname.data(), MB_ICONERROR | MB_OK);
207 }
208
209 MessageResponse WindowsPlatform::ShowResponseMessage(TString title,
210 TString description) {
211 MessageResponse result = mrCancel;
212
213 if (::MessageBox(NULL, description.data(), title.data(), MB_OKCANCEL) ==
214 IDOK) {
215 result = mrOK;
216 }
217
218 return result;
219 }
220
221 TString WindowsPlatform::GetBundledJavaLibraryFileName(TString RuntimePath) {
222 TString result = FilePath::IncludeTrailingSeparator(RuntimePath) +
223 _T("jre\\bin\\jli.dll");
224
225 if (FilePath::FileExists(result) == false) {
226 result = FilePath::IncludeTrailingSeparator(RuntimePath) +
227 _T("bin\\jli.dll");
228 }
229
230 return result;
231 }
232
233 ISectionalPropertyContainer* WindowsPlatform::GetConfigFile(TString FileName) {
234 IniFile *result = new IniFile();
235 if (result == NULL) {
236 return NULL;
237 }
238
239 result->LoadFromFile(FileName);
240
241 return result;
242 }
243
244 TString WindowsPlatform::GetModuleFileName() {
245 TString result;
246 DynamicBuffer<wchar_t> buffer(MAX_PATH);
247 if (buffer.GetData() == NULL) {
248 return result;
249 }
250
251 ::GetModuleFileName(NULL, buffer.GetData(),
252 static_cast<DWORD> (buffer.GetSize()));
253
254 while (ERROR_INSUFFICIENT_BUFFER == GetLastError()) {
255 if (!buffer.Resize(buffer.GetSize() * 2)) {
256 return result;
257 }
258 ::GetModuleFileName(NULL, buffer.GetData(),
259 static_cast<DWORD> (buffer.GetSize()));
260 }
261
262 result = buffer.GetData();
263 return result;
264 }
265
266 Module WindowsPlatform::LoadLibrary(TString FileName) {
267 return ::LoadLibrary(FileName.data());
268 }
269
270 void WindowsPlatform::FreeLibrary(Module AModule) {
271 ::FreeLibrary((HMODULE) AModule);
272 }
273
274 Procedure WindowsPlatform::GetProcAddress(Module AModule,
275 std::string MethodName) {
276 return ::GetProcAddress((HMODULE) AModule, MethodName.c_str());
277 }
278
279 bool WindowsPlatform::IsMainThread() {
280 bool result = (FMainThread == ::GetCurrentThreadId());
281 return result;
282 }
283
284 TString WindowsPlatform::GetTempDirectory() {
285 TString result;
286 PWSTR userDir = 0;
287
288 if (SUCCEEDED(SHGetKnownFolderPath(
289 FOLDERID_Profile,
290 0,
291 NULL,
292 &userDir))) {
293 result = userDir;
294 result += WINDOWS_JPACKAGE_TMP_DIR;
295 CoTaskMemFree(userDir);
296 }
297
298 return result;
299 }
300
301 static BOOL CALLBACK enumWindows(HWND winHandle, LPARAM lParam) {
302 DWORD pid = (DWORD) lParam, wPid = 0;
303 GetWindowThreadProcessId(winHandle, &wPid);
304 if (pid == wPid) {
305 SetForegroundWindow(winHandle);
306 return FALSE;
307 }
308 return TRUE;
309 }
310
311 TPlatformNumber WindowsPlatform::GetMemorySize() {
312 SYSTEM_INFO si;
313 GetSystemInfo(&si);
314 size_t result = (size_t) si.lpMaximumApplicationAddress;
315 result = result / 1048576; // Convert from bytes to megabytes.
316 return result;
317 }
318
319 std::vector<TString> FilterList(std::vector<TString> &Items,
320 std::wregex Pattern) {
321 std::vector<TString> result;
322
323 for (std::vector<TString>::iterator it = Items.begin();
324 it != Items.end(); ++it) {
325 TString item = *it;
326 std::wsmatch match;
327
328 if (std::regex_search(item, match, Pattern)) {
329 result.push_back(item);
330 }
331 }
332 return result;
333 }
334
335 Process* WindowsPlatform::CreateProcess() {
336 return new WindowsProcess();
337 }
338
339 void WindowsPlatform::InitStreamLocale(wios *stream) {
340 const std::locale empty_locale = std::locale::empty();
341 const std::locale utf8_locale =
342 std::locale(empty_locale, new std::codecvt_utf8<wchar_t>());
343 stream->imbue(utf8_locale);
344 }
345
346 void WindowsPlatform::addPlatformDependencies(JavaLibrary *pJavaLibrary) {
347 if (pJavaLibrary == NULL) {
348 return;
349 }
350
351 if (FilePath::FileExists(_T("msvcr100.dll")) == true) {
352 pJavaLibrary->AddDependency(_T("msvcr100.dll"));
353 }
354
355 TString runtimeBin = GetPackageRuntimeBinDirectory();
356 SetDllDirectory(runtimeBin.c_str());
357 }
358
359 void Platform::CopyString(char *Destination,
360 size_t NumberOfElements, const char *Source) {
361 strcpy_s(Destination, NumberOfElements, Source);
362
363 if (NumberOfElements > 0) {
364 Destination[NumberOfElements - 1] = '\0';
365 }
366 }
367
368 void Platform::CopyString(wchar_t *Destination,
369 size_t NumberOfElements, const wchar_t *Source) {
370 wcscpy_s(Destination, NumberOfElements, Source);
371
372 if (NumberOfElements > 0) {
373 Destination[NumberOfElements - 1] = '\0';
374 }
375 }
376
377 // Owner must free the return value.
378 MultibyteString Platform::WideStringToMultibyteString(
379 const wchar_t* value) {
380 MultibyteString result;
381 size_t count = 0;
382
383 if (value == NULL) {
384 return result;
385 }
386
387 count = WideCharToMultiByte(CP_UTF8, 0, value, -1, NULL, 0, NULL, NULL);
388
389 if (count > 0) {
390 result.data = new char[count + 1];
391 result.length = WideCharToMultiByte(CP_UTF8, 0, value, -1,
392 result.data, (int)count, NULL, NULL);
393 }
394
395 return result;
396 }
397
398 // Owner must free the return value.
399 WideString Platform::MultibyteStringToWideString(const char* value) {
400 WideString result;
401 size_t count = 0;
402
403 if (value == NULL) {
404 return result;
405 }
406
407 count = MultiByteToWideChar(CP_THREAD_ACP, MB_ERR_INVALID_CHARS,
408 value, -1, NULL, 0);
409
410 if (count > 0) {
411 result.data = new wchar_t[count];
412 result.length = MultiByteToWideChar(CP_THREAD_ACP, MB_ERR_INVALID_CHARS,
413 value, -1, result.data, (int)count);
414 }
415
416 return result;
417 }
418
419 FileHandle::FileHandle(std::wstring FileName) {
420 FHandle = ::CreateFile(FileName.data(), GENERIC_READ, FILE_SHARE_READ,
421 NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
422 }
423
424 FileHandle::~FileHandle() {
425 if (IsValid() == true) {
426 ::CloseHandle(FHandle);
427 }
428 }
429
430 bool FileHandle::IsValid() {
431 return FHandle != INVALID_HANDLE_VALUE;
432 }
433
434 HANDLE FileHandle::GetHandle() {
435 return FHandle;
436 }
437
438 FileMappingHandle::FileMappingHandle(HANDLE FileHandle) {
439 FHandle = ::CreateFileMapping(FileHandle, NULL, PAGE_READONLY, 0, 0, NULL);
440 }
441
442 bool FileMappingHandle::IsValid() {
443 return FHandle != NULL;
444 }
445
446 FileMappingHandle::~FileMappingHandle() {
447 if (IsValid() == true) {
448 ::CloseHandle(FHandle);
449 }
450 }
451
452 HANDLE FileMappingHandle::GetHandle() {
453 return FHandle;
454 }
455
456 FileData::FileData(HANDLE Handle) {
457 FBaseAddress = ::MapViewOfFile(Handle, FILE_MAP_READ, 0, 0, 0);
458 }
459
460 FileData::~FileData() {
461 if (IsValid() == true) {
462 ::UnmapViewOfFile(FBaseAddress);
463 }
464 }
465
466 bool FileData::IsValid() {
467 return FBaseAddress != NULL;
468 }
469
470 LPVOID FileData::GetBaseAddress() {
471 return FBaseAddress;
472 }
473
474 WindowsLibrary::WindowsLibrary(std::wstring FileName) {
475 FFileName = FileName;
476 }
477
478 std::vector<TString> WindowsLibrary::GetImports() {
479 std::vector<TString> result;
480 FileHandle library(FFileName);
481
482 if (library.IsValid() == true) {
483 FileMappingHandle mapping(library.GetHandle());
484
485 if (mapping.IsValid() == true) {
486 FileData fileData(mapping.GetHandle());
487
488 if (fileData.IsValid() == true) {
489 PIMAGE_DOS_HEADER dosHeader =
490 (PIMAGE_DOS_HEADER) fileData.GetBaseAddress();
491 PIMAGE_FILE_HEADER pImgFileHdr =
492 (PIMAGE_FILE_HEADER) fileData.GetBaseAddress();
493 if (dosHeader->e_magic == IMAGE_DOS_SIGNATURE) {
494 result = DumpPEFile(dosHeader);
495 }
496 }
497 }
498 }
499
500 return result;
501 }
502
503 // Given an RVA, look up the section header that encloses it and return a
504 // pointer to its IMAGE_SECTION_HEADER
505
506 PIMAGE_SECTION_HEADER WindowsLibrary::GetEnclosingSectionHeader(DWORD rva,
507 PIMAGE_NT_HEADERS pNTHeader) {
508 PIMAGE_SECTION_HEADER result = 0;
509 PIMAGE_SECTION_HEADER section = IMAGE_FIRST_SECTION(pNTHeader);
510
511 for (unsigned index = 0; index < pNTHeader->FileHeader.NumberOfSections;
512 index++, section++) {
513 // Is the RVA is within this section?
514 if ((rva >= section->VirtualAddress) &&
515 (rva < (section->VirtualAddress + section->Misc.VirtualSize))) {
516 result = section;
517 }
518 }
519
520 return result;
521 }
522
523 LPVOID WindowsLibrary::GetPtrFromRVA(DWORD rva, PIMAGE_NT_HEADERS pNTHeader,
524 DWORD imageBase) {
525 LPVOID result = 0;
526 PIMAGE_SECTION_HEADER pSectionHdr = GetEnclosingSectionHeader(rva,
527 pNTHeader);
528
529 if (pSectionHdr != NULL) {
530 INT delta = (INT) (
531 pSectionHdr->VirtualAddress - pSectionHdr->PointerToRawData);
532 DWORD_PTR dwp = (DWORD_PTR) (imageBase + rva - delta);
533 result = reinterpret_cast<LPVOID> (dwp); // VS2017 - FIXME
534 }
535
536 return result;
537 }
538
539 std::vector<TString> WindowsLibrary::GetImportsSection(DWORD base,
540 PIMAGE_NT_HEADERS pNTHeader) {
541 std::vector<TString> result;
542
543 // Look up where the imports section is located. Normally in
544 // the .idata section,
545 // but not necessarily so. Therefore, grab the RVA from the data dir.
546 DWORD importsStartRVA = pNTHeader->OptionalHeader.DataDirectory[
547 IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress;
548
549 if (importsStartRVA != NULL) {
550 // Get the IMAGE_SECTION_HEADER that contains the imports. This is
551 // usually the .idata section, but doesn't have to be.
552 PIMAGE_SECTION_HEADER pSection =
553 GetEnclosingSectionHeader(importsStartRVA, pNTHeader);
554
555 if (pSection != NULL) {
556 PIMAGE_IMPORT_DESCRIPTOR importDesc =
557 (PIMAGE_IMPORT_DESCRIPTOR) GetPtrFromRVA(
558 importsStartRVA, pNTHeader, base);
559
560 if (importDesc != NULL) {
561 while (true) {
562 // See if we've reached an empty IMAGE_IMPORT_DESCRIPTOR
563 if ((importDesc->TimeDateStamp == 0) &&
564 (importDesc->Name == 0)) {
565 break;
566 }
567
568 std::string filename = (char*) GetPtrFromRVA(
569 importDesc->Name, pNTHeader, base);
570 result.push_back(PlatformString(filename));
571 importDesc++; // advance to next IMAGE_IMPORT_DESCRIPTOR
572 }
573 }
574 }
575 }
576
577 return result;
578 }
579
580 std::vector<TString> WindowsLibrary::DumpPEFile(PIMAGE_DOS_HEADER dosHeader) {
581 std::vector<TString> result;
582 // all of this is VS2017 - FIXME
583 DWORD_PTR dwDosHeaders = reinterpret_cast<DWORD_PTR> (dosHeader);
584 DWORD_PTR dwPIHeaders = dwDosHeaders + (DWORD) (dosHeader->e_lfanew);
585
586 PIMAGE_NT_HEADERS pNTHeader =
587 reinterpret_cast<PIMAGE_NT_HEADERS> (dwPIHeaders);
588
589 // Verify that the e_lfanew field gave us a reasonable
590 // pointer and the PE signature.
591 // TODO: To really fix JDK-8131321 this condition needs to be changed.
592 // There is a matching change
593 // in JavaVirtualMachine.cpp that also needs to be changed.
594 if (pNTHeader->Signature == IMAGE_NT_SIGNATURE) {
595 DWORD base = (DWORD) (dwDosHeaders);
596 result = GetImportsSection(base, pNTHeader);
597 }
598
599 return result;
600 }
601
602 #include <TlHelp32.h>
603
604 WindowsJob::WindowsJob() {
605 FHandle = NULL;
606 }
607
608 WindowsJob::~WindowsJob() {
609 if (FHandle != NULL) {
610 CloseHandle(FHandle);
611 }
612 }
613
614 HANDLE WindowsJob::GetHandle() {
615 if (FHandle == NULL) {
616 FHandle = CreateJobObject(NULL, NULL); // GLOBAL
617
618 if (FHandle == NULL) {
619 ::MessageBox(0, _T("Could not create job object"),
620 _T("TEST"), MB_OK);
621 } else {
622 JOBOBJECT_EXTENDED_LIMIT_INFORMATION jeli = {0};
623
624 // Configure all child processes associated with
625 // the job to terminate when the
626 jeli.BasicLimitInformation.LimitFlags =
627 JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE;
628 if (0 == SetInformationJobObject(FHandle,
629 JobObjectExtendedLimitInformation, &jeli, sizeof (jeli))) {
630 ::MessageBox(0, _T("Could not SetInformationJobObject"),
631 _T("TEST"), MB_OK);
632 }
633 }
634 }
635
636 return FHandle;
637 }
638
639 // Initialize static member of WindowsProcess
640 WindowsJob WindowsProcess::FJob;
641
642 WindowsProcess::WindowsProcess() : Process() {
643 FRunning = false;
644 }
645
646 WindowsProcess::~WindowsProcess() {
647 Terminate();
648 }
649
650 void WindowsProcess::Cleanup() {
651 CloseHandle(FProcessInfo.hProcess);
652 CloseHandle(FProcessInfo.hThread);
653 }
654
655 bool WindowsProcess::IsRunning() {
656 bool result = false;
657
658 HANDLE handle = ::CreateToolhelp32Snapshot(TH32CS_SNAPALL, 0);
659 if (handle == INVALID_HANDLE_VALUE) {
660 return false;
661 }
662
663 PROCESSENTRY32 process = {0};
664 process.dwSize = sizeof (process);
665
666 if (::Process32First(handle, &process)) {
667 do {
668 if (process.th32ProcessID == FProcessInfo.dwProcessId) {
669 result = true;
670 break;
671 }
672 } while (::Process32Next(handle, &process));
673 }
674
675 CloseHandle(handle);
676
677 return result;
678 }
679
680 bool WindowsProcess::Terminate() {
681 bool result = false;
682
683 if (IsRunning() == true && FRunning == true) {
684 FRunning = false;
685 }
686
687 return result;
688 }
689
690 bool WindowsProcess::Execute(const TString Application,
691 const std::vector<TString> Arguments, bool AWait) {
692 bool result = false;
693
694 if (FRunning == false) {
695 FRunning = true;
696
697 STARTUPINFO startupInfo;
698 ZeroMemory(&startupInfo, sizeof (startupInfo));
699 startupInfo.cb = sizeof (startupInfo);
700 ZeroMemory(&FProcessInfo, sizeof (FProcessInfo));
701
702 TString command = Application;
703
704 for (std::vector<TString>::const_iterator iterator = Arguments.begin();
705 iterator != Arguments.end(); iterator++) {
706 command += TString(_T(" ")) + *iterator;
707 }
708
709 if (::CreateProcess(Application.data(), (wchar_t*)command.data(), NULL,
710 NULL, FALSE, 0, NULL, NULL, &startupInfo, &FProcessInfo)
711 == FALSE) {
712 TString message = PlatformString::Format(
713 _T("Error: Unable to create process %s"),
714 Application.data());
715 throw Exception(message);
716 } else {
717 if (FJob.GetHandle() != NULL) {
718 if (::AssignProcessToJobObject(FJob.GetHandle(),
719 FProcessInfo.hProcess) == 0) {
720 // Failed to assign process to job. It doesn't prevent
721 // anything from continuing so continue.
722 }
723 }
724
725 // Wait until child process exits.
726 if (AWait == true) {
727 Wait();
728 // Close process and thread handles.
729 Cleanup();
730 }
731 }
732 }
733
734 return result;
735 }
736
737 bool WindowsProcess::Wait() {
738 bool result = false;
739
740 WaitForSingleObject(FProcessInfo.hProcess, INFINITE);
741 return result;
742 }
743
744 TProcessID WindowsProcess::GetProcessID() {
745 return FProcessInfo.dwProcessId;
746 }
747
748 bool WindowsProcess::ReadOutput() {
749 bool result = false;
750 // TODO implement
751 return result;
752 }
753
754 void WindowsProcess::SetInput(TString Value) {
755 // TODO implement
756 }
757
758 std::list<TString> WindowsProcess::GetOutput() {
759 ReadOutput();
760 return Process::GetOutput();
761 }