1 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
2 /* dbus-launch-win.c dbus-launch utility
3 *
4 * Copyright (C) 2007 Ralf Habacker <ralf.habacker@freenet.de>
5 *
6 * Licensed under the Academic Free License version 2.1
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 *
22 */
23
24 #include <config.h>
25 #ifndef UNICODE
26 #define UNICODE 1
27 #endif
28 #include <windows.h>
29 #include <stdio.h>
30 #include <string.h>
31 #include <assert.h>
32
33 /* Save string functions. Instead of figuring out the exact _MSC_VER
34 that work, override for everybody. */
35
36 #define errno_t int
37 #define wcscat_s my_wcscat_s
38 #define wcscpy_s my_wcscpy_s
39
40 static errno_t
wcscat_s(wchar_t * dest,size_t size,wchar_t * src)41 wcscat_s (wchar_t *dest, size_t size, wchar_t *src)
42 {
43 assert (sizeof (wchar_t) * (wcslen (dest) + wcslen (src) + 1) <= size);
44 wcscat (dest, src);
45 return 0;
46 }
47
48
49 static errno_t
wcscpy_s(wchar_t * dest,size_t size,wchar_t * src)50 wcscpy_s (wchar_t *dest, size_t size, wchar_t *src)
51 {
52 assert (sizeof (wchar_t) * (wcslen (src) + 1) <= size);
53 wcscpy (dest, src);
54 return 0;
55 }
56
57 /* TODO (tl): This Windows version of dbus-launch is curretly rather
58 * pointless as it doesn't take the same command-line options as the
59 * UNIX dbus-launch does. A main point of the dbus-launch command is
60 * to pass it for instance a --config-file option to make the started
61 * dbus-daemon use that config file.
62 *
63 * This version also doesn't print out any information, which is a
64 * main point of the UNIX one. It should at least support the
65 * --sh-syntax option, and maybe also a --cmd-syntax to print out the
66 * variable settings in cmd.exe syntax?
67 *
68 * NOTE (rh): The main task of dbus-launch is (from the man page) to start
69 * a session bus and this is archieved by the current implemention.
70 *
71 * Additional on windows the session bus starting in not integrated
72 * into the logon process, so there is no need for any --syntax option.
73 * In fact (at least for kde on windows) the session bus is autostarted
74 * with the first application requesting a session bus.
75 *
76 */
77
78 #define AUTO_ACTIVATE_CONSOLE_WHEN_VERBOSE_MODE 1
79
80 #define DIM(x) (sizeof(x) / sizeof(x[0]))
81 #define WCSTRINGIFY_(x) L ## x
82 #define WCSTRINGIFY(x) WCSTRINGIFY_(x)
83
84 int
main(int argc,char ** argv)85 main (int argc, char **argv)
86 {
87 wchar_t dbusDaemonPath[MAX_PATH * 2 + 1];
88 wchar_t command[MAX_PATH * 2 + 1];
89 wchar_t *p;
90 wchar_t *daemon_name;
91 int result;
92 int showConsole = 0;
93 #ifdef DBUS_WINCE
94 char *s = NULL;
95 #else
96 char *s = getenv("DBUS_VERBOSE");
97 #endif
98 int verbose = s && *s != '\0' ? 1 : 0;
99
100 PROCESS_INFORMATION pi;
101 STARTUPINFOW si;
102 BOOL inherit = TRUE;
103 DWORD flags = 0;
104
105 #ifdef AUTO_ACTIVATE_CONSOLE_WHEN_VERBOSE_MODE
106 if (verbose)
107 showConsole = 1;
108 #endif
109 GetModuleFileNameW (NULL, dbusDaemonPath, DIM (dbusDaemonPath));
110
111 daemon_name = WCSTRINGIFY(DBUS_DAEMON_NAME) L".exe";
112
113 if ((p = wcsrchr (dbusDaemonPath, L'\\')))
114 {
115 p[1] = L'\0';
116 wcscat_s (dbusDaemonPath, sizeof (dbusDaemonPath), daemon_name);
117 }
118 else
119 {
120 if (verbose)
121 fprintf (stderr, "error: could not extract path from current "
122 "applications module filename\n");
123 return 1;
124 }
125
126 #ifdef DBUS_WINCE
127 /* Windows CE has a different interpretation of cmdline: Start with argv[1]. */
128 wcscpy_s (command, sizeof (command), L"--session");
129 if (verbose)
130 fprintf (stderr, "%ls %ls\n", dbusDaemonPath, command);
131 #else
132 command[0] = L'\0';
133 /* Windows cmdline starts with path, which can contain spaces. */
134 wcscpy_s (command, sizeof (command), L"\"");
135 wcscat_s (command, sizeof (command), dbusDaemonPath);
136 wcscat_s (command, sizeof (command), L"\" --session");
137 if (verbose)
138 fprintf (stderr, "%ls\n", command);
139 #endif
140
141 memset (&si, 0, sizeof (si));
142 memset (&pi, 0, sizeof (pi));
143 si.cb = sizeof (si);
144
145 if (verbose)
146 flags |= CREATE_NEW_CONSOLE;
147
148 #ifdef DBUS_WINCE
149 inherit = FALSE;
150 #else
151 flags |= NORMAL_PRIORITY_CLASS;
152 if (!verbose)
153 flags |= DETACHED_PROCESS;
154 #endif
155
156 result = CreateProcessW (dbusDaemonPath, command, 0, 0,
157 inherit, flags, 0, 0, &si, &pi);
158
159 if (result == 0)
160 {
161 if (verbose)
162 fprintf (stderr, "Could not start " DBUS_DAEMON_NAME ". error=%d\n",
163 GetLastError ());
164 return 4;
165 }
166
167 CloseHandle (pi.hProcess);
168 CloseHandle (pi.hThread);
169
170 return 0;
171 }
172