1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
|
/*
* QEMU Guest Agent helpers for win32 service management
*
* Copyright IBM Corp. 2012
*
* Authors:
* Gal Hammer <ghammer@redhat.com>
* Michael Roth <mdroth@linux.vnet.ibm.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#include <stdlib.h>
#include <stdio.h>
#include <glib.h>
#include <windows.h>
#include "qga/service-win32.h"
static int printf_win_error(const char *text)
{
DWORD err = GetLastError();
char *message;
int n;
FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
err,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(char *)&message, 0,
NULL);
n = fprintf(stderr, "%s. (Error: %d) %s", text, (int)err, message);
LocalFree(message);
return n;
}
/* Windows command line escaping. Based on
* <http://blogs.msdn.com/b/oldnewthing/archive/2010/09/17/10063629.aspx> and
* <http://msdn.microsoft.com/en-us/library/windows/desktop/17w5ykft%28v=vs.85%29.aspx>.
*
* The caller is responsible for initializing @buffer; prior contents are lost.
*/
static const char *win_escape_arg(const char *to_escape, GString *buffer)
{
size_t backslash_count;
const char *c;
/* open with a double quote */
g_string_assign(buffer, "\"");
backslash_count = 0;
for (c = to_escape; *c != '\0'; ++c) {
switch (*c) {
case '\\':
/* The meaning depends on the first non-backslash character coming
* up.
*/
++backslash_count;
break;
case '"':
/* We must escape each pending backslash, then escape the double
* quote. This creates a case of "odd number of backslashes [...]
* followed by a double quotation mark".
*/
while (backslash_count) {
--backslash_count;
g_string_append(buffer, "\\\\");
}
g_string_append(buffer, "\\\"");
break;
default:
/* Any pending backslashes are without special meaning, flush them.
* "Backslashes are interpreted literally, unless they immediately
* precede a double quotation mark."
*/
while (backslash_count) {
--backslash_count;
g_string_append_c(buffer, '\\');
}
g_string_append_c(buffer, *c);
}
}
/* We're about to close with a double quote in string delimiter role.
* Double all pending backslashes, creating a case of "even number of
* backslashes [...] followed by a double quotation mark".
*/
while (backslash_count) {
--backslash_count;
g_string_append(buffer, "\\\\");
}
g_string_append_c(buffer, '"');
return buffer->str;
}
int ga_install_service(const char *path, const char *logfile,
const char *state_dir)
{
int ret = EXIT_FAILURE;
SC_HANDLE manager;
SC_HANDLE service;
TCHAR module_fname[MAX_PATH];
GString *esc;
GString *cmdline;
SERVICE_DESCRIPTION desc = { (char *)QGA_SERVICE_DESCRIPTION };
if (GetModuleFileName(NULL, module_fname, MAX_PATH) == 0) {
printf_win_error("No full path to service's executable");
return EXIT_FAILURE;
}
esc = g_string_new("");
cmdline = g_string_new("");
g_string_append_printf(cmdline, "%s -d",
win_escape_arg(module_fname, esc));
if (path) {
g_string_append_printf(cmdline, " -p %s", win_escape_arg(path, esc));
}
if (logfile) {
g_string_append_printf(cmdline, " -l %s -v",
win_escape_arg(logfile, esc));
}
if (state_dir) {
g_string_append_printf(cmdline, " -t %s",
win_escape_arg(state_dir, esc));
}
g_debug("service's cmdline: %s", cmdline->str);
manager = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
if (manager == NULL) {
printf_win_error("No handle to service control manager");
goto out_strings;
}
service = CreateService(manager, QGA_SERVICE_NAME, QGA_SERVICE_DISPLAY_NAME,
SERVICE_ALL_ACCESS, SERVICE_WIN32_OWN_PROCESS, SERVICE_AUTO_START,
SERVICE_ERROR_NORMAL, cmdline->str, NULL, NULL, NULL, NULL, NULL);
if (service == NULL) {
printf_win_error("Failed to install service");
goto out_manager;
}
ChangeServiceConfig2(service, SERVICE_CONFIG_DESCRIPTION, &desc);
fprintf(stderr, "Service was installed successfully.\n");
ret = EXIT_SUCCESS;
CloseServiceHandle(service);
out_manager:
CloseServiceHandle(manager);
out_strings:
g_string_free(cmdline, TRUE);
g_string_free(esc, TRUE);
return ret;
}
int ga_uninstall_service(void)
{
SC_HANDLE manager;
SC_HANDLE service;
manager = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
if (manager == NULL) {
printf_win_error("No handle to service control manager");
return EXIT_FAILURE;
}
service = OpenService(manager, QGA_SERVICE_NAME, DELETE);
if (service == NULL) {
printf_win_error("No handle to service");
CloseServiceHandle(manager);
return EXIT_FAILURE;
}
if (DeleteService(service) == FALSE) {
printf_win_error("Failed to delete service");
} else {
fprintf(stderr, "Service was deleted successfully.\n");
}
CloseServiceHandle(service);
CloseServiceHandle(manager);
return EXIT_SUCCESS;
}
|
