1 | /**********************************************************************
|
---|
2 | *
|
---|
3 | * os_process_windows.c -- Windows version of osprocess. See os_process.h
|
---|
4 | * for more details
|
---|
5 | *
|
---|
6 | * Copyright (C) 2010 The New Zealand Digital Library Project
|
---|
7 | *
|
---|
8 | * A component of the Greenstone digital library software
|
---|
9 | * from the New Zealand Digital Library Project at the
|
---|
10 | * University of Waikato, New Zealand.
|
---|
11 | *
|
---|
12 | * This program is free software; you can redistribute it and/or modify
|
---|
13 | * it under the terms of the GNU General Public License as published by
|
---|
14 | * the Free Software Foundation; either version 2 of the License, or
|
---|
15 | * (at your option) any later version.
|
---|
16 | *
|
---|
17 | * This program is distributed in the hope that it will be useful,
|
---|
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
---|
20 | * GNU General Public License for more details.
|
---|
21 | *
|
---|
22 | * You should have received a copy of the GNU General Public License
|
---|
23 | * along with this program; if not, write to the Free Software
|
---|
24 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
---|
25 | *
|
---|
26 | *********************************************************************/
|
---|
27 |
|
---|
28 | #ifdef __WIN32__
|
---|
29 |
|
---|
30 | #if defined(GSDL_USE_OBJECTSPACE)
|
---|
31 | # include <ospace/std/iostream>
|
---|
32 | #elif defined(GSDL_USE_IOS_H)
|
---|
33 | # include <iostream.h>
|
---|
34 | #else
|
---|
35 | # include <iostream>
|
---|
36 | using namespace std;
|
---|
37 | #endif
|
---|
38 |
|
---|
39 | #include "os_process_windows.h"
|
---|
40 |
|
---|
41 | //#include <stdio.h>
|
---|
42 |
|
---|
43 | osprocesswindows::osprocesswindows(char* cmdline)
|
---|
44 | : osprocess(cmdline)
|
---|
45 | {}
|
---|
46 |
|
---|
47 | osprocesswindows::osprocesswindows(char* cmdline, OSProcessPipeMode mode)
|
---|
48 | : child_stdout_read_(NULL), child_stdin_write_(NULL),
|
---|
49 | osprocess(cmdline,mode)
|
---|
50 | {
|
---|
51 | HANDLE child_stdin_read = NULL;
|
---|
52 | HANDLE child_stdout_write = NULL;
|
---|
53 |
|
---|
54 | SECURITY_ATTRIBUTES saAttr;
|
---|
55 | saAttr.nLength = sizeof(SECURITY_ATTRIBUTES);
|
---|
56 | saAttr.bInheritHandle = TRUE;
|
---|
57 | saAttr.lpSecurityDescriptor = NULL;
|
---|
58 |
|
---|
59 | // Create a pipe for the child process's STDOUT.
|
---|
60 | if (!CreatePipe(&child_stdout_read_, &child_stdout_write, &saAttr, 0)) {
|
---|
61 | cerr << "osprocesswindows::osprocesswindows(): Failed to create stdout pipe for child process" << endl;
|
---|
62 | }
|
---|
63 |
|
---|
64 | // Ensure the read handle to the pipe for STDOUT is not inherited.
|
---|
65 | if (!SetHandleInformation(child_stdout_read_, HANDLE_FLAG_INHERIT, 0)) {
|
---|
66 | cerr << "osprocesswindows::osprocesswindows(): Failed to set handle information for stdout pipe for child process" << endl;
|
---|
67 | }
|
---|
68 |
|
---|
69 | // Create a pipe for the child process's STDIN.
|
---|
70 | if (!CreatePipe(&child_stdin_read, &child_stdin_write_, &saAttr, 0)) {
|
---|
71 | cerr << "osprocesswindows::osprocesswindows(): Failed to create stdin pipe for child process" << endl;
|
---|
72 | }
|
---|
73 |
|
---|
74 | // Ensure the write handle to the pipe for STDIN is not inherited.
|
---|
75 | if (!SetHandleInformation(child_stdin_write_, HANDLE_FLAG_INHERIT, 0)) {
|
---|
76 | cerr << "osprocesswindows::osprocesswindows(): Failed to set handle information for stdin pipe for child process" << endl;
|
---|
77 | }
|
---|
78 |
|
---|
79 | STARTUPINFOA si;
|
---|
80 | memset(&si, 0, sizeof(si));
|
---|
81 | memset(&pi_, 0, sizeof(pi_));
|
---|
82 |
|
---|
83 | si.cb = sizeof(si);
|
---|
84 |
|
---|
85 | // These two lines help prevent a DOS window popping up
|
---|
86 | // when the process is created
|
---|
87 | si.dwFlags |= STARTF_USESHOWWINDOW;
|
---|
88 | si.wShowWindow = SW_HIDE;
|
---|
89 |
|
---|
90 | si.dwFlags |= STARTF_USESTDHANDLES;
|
---|
91 |
|
---|
92 | // any error messages in child process to to same place as parent process
|
---|
93 | // e.g. in the case of running as a CGI script, the Web server error log
|
---|
94 | si.hStdError = GetStdHandle(STD_ERROR_HANDLE);
|
---|
95 |
|
---|
96 | // Output from the child process comes to the parent process, down the
|
---|
97 | // OUT pipe
|
---|
98 | si.hStdOutput = child_stdout_write;
|
---|
99 |
|
---|
100 | // Input to the child process can be sent from the parent process, down the
|
---|
101 | // In pipe
|
---|
102 | si.hStdInput = child_stdin_read;
|
---|
103 |
|
---|
104 | int rv = CreateProcess(NULL, // no application name
|
---|
105 | cmdline,
|
---|
106 | NULL,
|
---|
107 | NULL, // no process or thread security attribues
|
---|
108 | TRUE, // Inherit handles
|
---|
109 | 0, // Creation flag
|
---|
110 | NULL, // No environment block
|
---|
111 | ".", // current working directory
|
---|
112 | &si,
|
---|
113 | &pi_); // process info filled out as a result
|
---|
114 | if (!rv) {
|
---|
115 | cerr << "os_process_windows(): Error creating process" << endl;
|
---|
116 | }
|
---|
117 |
|
---|
118 | // close the handles that aren't used by the parent process
|
---|
119 |
|
---|
120 | if (!CloseHandle(child_stdout_write)) {
|
---|
121 | cerr << "os_process_windows(): Error closing StdOutWr Handle" << endl;
|
---|
122 | }
|
---|
123 |
|
---|
124 | if (!CloseHandle(child_stdin_read)) {
|
---|
125 | cerr << "os_process_windows(): Error closing StdInRd Handle" << endl;
|
---|
126 | }
|
---|
127 | }
|
---|
128 |
|
---|
129 |
|
---|
130 | osprocesswindows::~osprocesswindows()
|
---|
131 | {
|
---|
132 | // close any file handles that are still open
|
---|
133 | close();
|
---|
134 |
|
---|
135 | // Close process and thread handles
|
---|
136 | CloseHandle( pi_.hProcess );
|
---|
137 | pi_.hProcess = NULL;
|
---|
138 |
|
---|
139 | CloseHandle( pi_.hThread );
|
---|
140 | pi_.hThread = NULL;
|
---|
141 | }
|
---|
142 |
|
---|
143 |
|
---|
144 |
|
---|
145 | int osprocesswindows::write(const char* buffer, const int buffer_len)
|
---|
146 | {
|
---|
147 | DWORD actual_write_len;
|
---|
148 |
|
---|
149 | bool write_ok
|
---|
150 | = WriteFile(child_stdin_write_, buffer, buffer_len, &actual_write_len, NULL);
|
---|
151 | if (!write_ok) {
|
---|
152 | cerr << "osproesswindows::write() Error: failed to write data" << endl;
|
---|
153 | }
|
---|
154 | return actual_write_len;
|
---|
155 | }
|
---|
156 |
|
---|
157 |
|
---|
158 | int osprocesswindows::read(char* buffer, const int buffer_len)
|
---|
159 | {
|
---|
160 | DWORD actual_read_len;
|
---|
161 |
|
---|
162 | bool read_ok
|
---|
163 | = ReadFile(child_stdout_read_, buffer, buffer_len, &actual_read_len, NULL);
|
---|
164 | if (!read_ok) {
|
---|
165 | cerr << "osproesswindows::read() Error: failed to read data" << endl;
|
---|
166 | }
|
---|
167 |
|
---|
168 | return actual_read_len;
|
---|
169 | }
|
---|
170 |
|
---|
171 |
|
---|
172 |
|
---|
173 |
|
---|
174 | bool osprocessunix::close_write_pipe(OSProcessWarnStatus warn_status)
|
---|
175 | {
|
---|
176 | bool write_close_ok = true;
|
---|
177 |
|
---|
178 | if (child_stdout_read_ != NULL) {
|
---|
179 |
|
---|
180 | write_close_ok = CloseHandle(child_stdin_write_);
|
---|
181 |
|
---|
182 | if (write_close_ok) {
|
---|
183 | child_stdin_write_ = NULL;
|
---|
184 | }
|
---|
185 | else {
|
---|
186 | // not OK
|
---|
187 | cerr << "osprocesswindows::close(): Error - Failed to close stdin write handle on pipe to child process" << endl;
|
---|
188 | }
|
---|
189 | }
|
---|
190 | else if (warning_status == withWarning) {
|
---|
191 | cerr << "osprocesswindows::close_write_pipe(): Warning - Tried to close already closed pipe" << endl;
|
---|
192 | }
|
---|
193 |
|
---|
194 | return write_close_ok;
|
---|
195 | }
|
---|
196 |
|
---|
197 |
|
---|
198 | bool osprocessunix::close_read_pipe(OSProcessWarnStatus warn_status)
|
---|
199 | {
|
---|
200 | bool read_close_ok = true;
|
---|
201 |
|
---|
202 | if (child_stdout_read_ != NULL) {
|
---|
203 |
|
---|
204 | read_close_ok = CloseHandle(child_stdout_read_);
|
---|
205 |
|
---|
206 | if (read_close_ok) {
|
---|
207 | child_stdout_read_ = NULL;
|
---|
208 | }
|
---|
209 | else {
|
---|
210 | cerr << "osprocesswindows::close(): Error - Failed to close handle stdout read on pipe to chlild process" << endl;
|
---|
211 | }
|
---|
212 | }
|
---|
213 | else if (warn_status == withWarning) {
|
---|
214 | cerr << "osprocesswindows::close_read_pipe(): Warning - Tried to close already closed pipe" << endl;
|
---|
215 | }
|
---|
216 |
|
---|
217 | return read_close_ok;
|
---|
218 | }
|
---|
219 |
|
---|
220 |
|
---|
221 |
|
---|
222 |
|
---|
223 |
|
---|
224 |
|
---|
225 |
|
---|
226 |
|
---|
227 | #endif
|
---|