1 /*
2 _________ __ __
3 / _____// |_____________ _/ |______ ____ __ __ ______
4 \_____ \\ __\_ __ \__ \\ __\__ \ / ___\| | \/ ___/
5 / \| | | | \// __ \| | / __ \_/ /_/ > | /\___ |
6 /_______ /|__| |__| (____ /__| (____ /\___ /|____//____ >
7 \/ \/ \//_____/ \/
8 ______________________ ______________________
9 T H E W A R B E G I N S
10 Stratagus - A free fantasy real time strategy game engine
11
12 stratagus-game-launcher.h - Stratagus Game Launcher
13 Copyright (C) 2010-2011 Pali Rohár <pali.rohar@gmail.com>
14
15 This program is free software: you can redistribute it and/or modify
16 it under the terms of the GNU General Public License as published by
17 the Free Software Foundation, either version 2 of the License, or
18 (at your option) any later version.
19
20 This program is distributed in the hope that it will be useful,
21 but WITHOUT ANY WARRANTY; without even the implied warranty of
22 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 GNU General Public License for more details.
24
25 You should have received a copy of the GNU General Public License
26 along with this program. If not, see <http://www.gnu.org/licenses/>.
27
28 */
29
30 /**
31 * @page GameLauncher Stratagus Game Launcher
32 *
33 * Stratagus Game Launcher is C code for generating launcher for any Stratagus game.
34 * Game launcher for concrete game check if game data exists in default Stratagus
35 * location and spawn Stratagus process with correct game data location. If does not
36 * exist it show GUI or console error message.
37 *
38 * Before including this header, you need to define:
39 *
40 * ::GAME_NAME
41 *
42 * ::GAME_CD
43 *
44 * ::GAME
45 *
46 * On Non Windows system you need to specify also paths:
47 *
48 * ::DATA_PATH
49 *
50 * ::SCRIPTS_PATH
51 *
52 * ::STRATAGUS_BIN
53 *
54 * On Windows paths are reading from InstallLocation key in Uninstall section:
55 * Software\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\Stratagus
56 *
57 * Example use of code:
58 *
59 * @code
60 *
61 * #define GAME_NAME "My Game Name"
62 * #define GAME_CD "Original Game CD Name"
63 * #define GAME "my_game"
64 *
65 * #ifndef WIN32
66 * #define DATA_PATH "/usr/share/games/stratagus/my_game"
67 * #define SCRIPTS_PATH "/usr/share/games/stratagus/my_game"
68 * #define STRATAGUS_BIN "/usr/games/stratagus"
69 * #endif
70 *
71 * #include <stratagus-game-launcher.h>
72 *
73 * @endcode
74 **/
75
76 /**
77 * \def GAME_NAME
78 * Full name of your Game
79 **/
80
81 /**
82 * \def GAME_CD
83 * Full name of data CD
84 **/
85
86 /**
87 * \def GAME
88 * Short name of game (lower ascii chars without space)
89 **/
90
91 /**
92 * \def DATA_PATH
93 * Path to game data directory
94 **/
95
96 /**
97 * \def SCRIPTS_PATH
98 * Path to game scripts directory
99 **/
100
101 /**
102 * \def STRATAGUS_BIN
103 * Path to stratagus executable binary
104 **/
105
106 /* Fake definitions for Doxygen */
107 #ifdef DOXYGEN
108 #define GAME_NAME
109 #define GAME_CD
110 #define GAME
111 #define DATA_PATH
112 #define SCRIPTS_PATH
113 #define STRATAGUS_BIN
114 #endif
115
116 #if ! defined (GAME_NAME) || ! defined (GAME_CD) || ! defined (GAME)
117 #error You need to define all Game macros, see stratagus-game-launcher.h
118 #endif
119
120 #if ( defined (_MSC_VER) || defined (_WIN32) || defined (_WIN64) ) && ! defined (WIN32)
121 #define WIN32
122 #endif
123
124 /**
125 * \def TITLE_PNG
126 * OPTIONAL: Path to title screen (for testing if data was extracted)
127 **/
128 #ifndef TITLE_PNG
129 #ifdef WIN32
130 #define TITLE_PNG "%s\\graphics\\ui\\title.png"
131 #else
132 #define TITLE_PNG "%s/graphics/ui/title.png"
133 #endif
134 #endif
135
136 #ifndef WIN32
137 #if ! defined (DATA_PATH) || ! defined (SCRIPTS_PATH) || ! defined (STRATAGUS_BIN)
138 #error You need to define paths, see stratagus-game-launcher.h
139 #endif
140 #endif
141
142 #ifdef WIN32
143 #define WINVER 0x0501
144 #include <windows.h>
145 #include <wincon.h>
146 #include <process.h>
147 #include <errno.h>
148 #endif
149
150 #include <stdio.h>
151 #include <stdlib.h>
152 #include <string.h>
153
154 #include <sys/stat.h>
155 #include <sys/types.h>
156
157 #if defined(_MSC_VER) || defined(__MINGW32__)
158 #include <direct.h>
159 #define inline __inline
160 #define chdir _chdir
161 #define getcwd _getcwd
162 #define spawnvp _spawnvp
163 #define stat _stat
164 #endif
165
166 #ifdef _MSC_VER
167 #pragma comment(linker, "/SUBSYSTEM:WINDOWS /ENTRY:mainCRTStartup")
168 #endif
169
170 #ifndef WIN32
171 #include <unistd.h>
172 #include <X11/Xlib.h>
173 #ifndef NOGTK
174 #include <gtk/gtk.h>
175 #endif
176 #endif
177
178 #ifdef _WIN64
179 #define REGKEY "Software\\Wow6432Node\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\Stratagus (64 bit)"
180 #elif defined (WIN32)
181 #define REGKEY "Software\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\Stratagus"
182 #endif
183
184 #define TITLE GAME_NAME
185 #define STRATAGUS_NOT_FOUND "Stratagus is not installed.\nYou need Stratagus to run " GAME_NAME "!\nFirst install Stratagus from https://launchpad.net/stratagus"
186 #define DATA_NOT_EXTRACTED GAME_NAME " data was not extracted yet.\nYou need extract data from original " GAME_CD " first!"
187 #define NO_X_DISPLAY "Cannot open X Display"
188 #define CONSOLE_MODE_NOT_ROOT "You must be root to run " GAME_NAME " in console framebuffer mode"
189
190 #define BUFF_SIZE 1024
191
192 #ifndef WIN32
193 int ConsoleMode = 0;
194 #endif
195
error(char * title,char * text)196 static void error(char * title, char * text) {
197
198 #ifdef WIN32
199 MessageBox(NULL, text, title, MB_OK | MB_ICONERROR);
200 #else
201 #ifdef NOGTK
202 {
203 #else
204 if ( ! ConsoleMode ) {
205 GtkWidget * window = NULL;
206 GtkWidget * dialog = NULL;
207
208 dialog = gtk_message_dialog_new(GTK_WINDOW(window), GTK_DIALOG_DESTROY_WITH_PARENT, GTK_MESSAGE_ERROR, GTK_BUTTONS_OK, "%s", text);
209 gtk_window_set_title(GTK_WINDOW(dialog), title);
210 gtk_window_set_skip_pager_hint(GTK_WINDOW(dialog), 0);
211 gtk_window_set_skip_taskbar_hint(GTK_WINDOW(dialog), 0);
212 gtk_label_set_selectable(GTK_LABEL(GTK_MESSAGE_DIALOG(dialog)->label), 0);
213 gtk_dialog_run(GTK_DIALOG(dialog));
214 gtk_widget_destroy(dialog);
215
216 } else {
217 #endif
218 fprintf(stderr, "%s -- Error: %s\n", title, text);
219 }
220 #endif
221 exit(1);
222 }
223
224 int main(int argc, char * argv[]) {
225
226 #ifndef WIN32
227 if ( ! XOpenDisplay(NULL) ) {
228 ConsoleMode = 1;
229 }
230 if ( ConsoleMode ) {
231 if ( getuid() != 0 ) {
232 error(TITLE, CONSOLE_MODE_NOT_ROOT);
233 }
234 } else {
235 #ifndef NOGTK
236 gtk_init(&argc, &argv);
237 #endif
238 }
239 #endif
240
241 struct stat st;
242 char data_path[BUFF_SIZE];
243 char scripts_path[BUFF_SIZE];
244 char stratagus_bin[BUFF_SIZE];
245 char title_path[BUFF_SIZE];
246
247 #ifdef WIN32
248 char executable_path[BUFF_SIZE];
249 memset(executable_path, 0, sizeof(executable_path));
250 GetModuleFileName(NULL, executable_path, sizeof(executable_path)-1);
251
252 char executable_drive[_MAX_DRIVE];
253 char executable_dir[_MAX_DIR];
254 memset(executable_drive, 0, sizeof(executable_drive));
255 memset(executable_dir, 0, sizeof(executable_dir));
256 _splitpath(executable_path, executable_drive, executable_dir, NULL, NULL);
257
258 size_t data_path_size = sizeof(data_path);
259 memset(data_path, 0, data_path_size);
260
261 if (executable_path[0] && executable_drive[0] && executable_dir[0]) {
262 strcpy(data_path, executable_drive);
263 strcpy(data_path+strlen(executable_drive), executable_dir);
264 } else {
265 getcwd(data_path, data_path_size);
266 }
267 const size_t data_path_length = strlen(data_path);
268 if (data_path_length != 0 && data_path[data_path_length - 1] == '\\') {
269 data_path[data_path_length - 1] = '\0';
270 }
271 sprintf(scripts_path, "\"%s\"", data_path);
272
273 char stratagus_path[BUFF_SIZE];
274
275 // Try to use stratagus.exe from data (install) directory first
276 sprintf(stratagus_bin, "%s\\stratagus.exe", data_path);
277 if (stat(stratagus_bin, &st) != 0) {
278 // If no local stratagus.exe is present, look for a globally installed version
279 DWORD stratagus_path_size = sizeof(stratagus_path);
280 memset(stratagus_path, 0, stratagus_path_size);
281 HKEY key;
282
283 if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, REGKEY, 0, KEY_QUERY_VALUE, &key) == ERROR_SUCCESS) {
284 if (RegQueryValueEx(key, "InstallLocation", NULL, NULL, (LPBYTE)stratagus_path, &stratagus_path_size) == ERROR_SUCCESS) {
285 if (stratagus_path_size == 0 || strlen(stratagus_path) == 0) {
286 error(TITLE, STRATAGUS_NOT_FOUND);
287 }
288 }
289 RegCloseKey(key);
290 }
291
292 if (chdir(stratagus_path) != 0) {
293 error(TITLE, STRATAGUS_NOT_FOUND);
294 }
295 sprintf(stratagus_bin, "%s\\stratagus.exe", stratagus_path);
296 }
297 #else
298 strcpy(data_path, DATA_PATH);
299 strcpy(scripts_path, SCRIPTS_PATH);
300 strcpy(stratagus_bin, STRATAGUS_BIN);
301 #endif
302
303 if ( stat(stratagus_bin, &st) != 0 ) {
304 error(TITLE, STRATAGUS_NOT_FOUND);
305 }
306 if ( stat(data_path, &st) != 0 ) {
307 error(TITLE, DATA_NOT_EXTRACTED);
308 }
309 sprintf(title_path, TITLE_PNG, data_path);
310 #ifdef WIN32
311 int data_path_len = strlen(data_path);
312
313 for (int i = data_path_len - 1; i >= 0; --i) {
314 data_path[i + 1] = data_path[i];
315 }
316 data_path[0] = '"';
317 data_path[data_path_len + 1] = '"';
318 data_path[data_path_len + 2] = 0;
319 #endif
320
321 if ( stat(title_path, &st) != 0 ) {
322 error(TITLE, DATA_NOT_EXTRACTED);
323 }
324 #ifndef WIN32
325 if ( strcmp(data_path, scripts_path) != 0 ) {
326 if ( chdir(data_path) != 0 ) {
327 error(TITLE, DATA_NOT_EXTRACTED);
328 }
329 }
330 #endif
331
332 #ifdef _MSC_VER
333 char** stratagus_argv;
334 stratagus_argv = (char**) malloc((argc + 3) * sizeof (*stratagus_argv));
335 #else
336 char * stratagus_argv[argc + 3];
337 #endif
338
339 #ifdef WIN32
340 char stratagus_argv0_esc[BUFF_SIZE];
341 memset(stratagus_argv0_esc, 0, sizeof(stratagus_argv0_esc));
342 strcpy(stratagus_argv0_esc + 1, argv[0]);
343 stratagus_argv0_esc[0] = '"';
344 stratagus_argv0_esc[strlen(argv[0]) + 1] = '"';
345 stratagus_argv0_esc[strlen(argv[0]) + 2] = 0;
346 stratagus_argv[0] = stratagus_argv0_esc;
347 #else
348 stratagus_argv[0] = argv[0];
349 #endif
350
351 stratagus_argv[1] = "-d";
352 stratagus_argv[2] = scripts_path;
353
354 for (int i = 3; i < argc + 2; ++i ) {
355 stratagus_argv[i] = argv[i - 2];
356 }
357 stratagus_argv[argc + 2] = NULL;
358
359 #ifdef WIN32
360 AttachConsole(ATTACH_PARENT_PROCESS);
361
362 errno = 0;
363 int ret = spawnvp(_P_WAIT, stratagus_bin, stratagus_argv);
364 #ifdef _MSC_VER
365 free (stratagus_argv);
366 #endif
367 if ( errno == 0 ) {
368 return ret;
369 }
370 #else
371 execvp(stratagus_bin, stratagus_argv);
372 #endif
373
374 error(TITLE, STRATAGUS_NOT_FOUND);
375 return 1;
376 }
377
