1 /*
2 Copyright (C) 2001-2006, William Joseph.
3 All Rights Reserved.
4
5 This file is part of GtkRadiant.
6
7 GtkRadiant is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
11
12 GtkRadiant is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with GtkRadiant; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #include "environment.h"
23
24 #include "stream/textstream.h"
25 #include "string/string.h"
26 #include "stream/stringstream.h"
27 #include "debugging/debugging.h"
28 #include "os/path.h"
29 #include "cmdlib.h"
30
31
32 int g_argc;
33 char** g_argv;
34
args_init(int argc,char * argv[])35 void args_init(int argc, char* argv[])
36 {
37 int i, j, k;
38
39 for (i = 1; i < argc; i++)
40 {
41 for (k = i; k < argc; k++)
42 if (argv[k] != 0)
43 break;
44
45 if (k > i)
46 {
47 k -= i;
48 for (j = i + k; j < argc; j++)
49 argv[j-k] = argv[j];
50 argc -= k;
51 }
52 }
53
54 g_argc = argc;
55 g_argv = argv;
56 }
57
58 namespace
59 {
60 CopiedString home_path;
61 CopiedString app_path;
62 }
63
environment_get_home_path()64 const char* environment_get_home_path()
65 {
66 return home_path.c_str();
67 }
68
environment_get_app_path()69 const char* environment_get_app_path()
70 {
71 return app_path.c_str();
72 }
73
74
75 #if defined (__linux__) || defined (__APPLE__) || defined (__FreeBSD__)
76
77 #include <stdlib.h>
78 #include <pwd.h>
79 #include <unistd.h>
80
81 #include <glib.h>
82
83 const char* LINK_NAME =
84 #if defined (__linux__)
85 "/proc/self/exe"
86 #else
87 "/proc/curproc/file"
88 #endif
89 ;
90
91 /// brief Returns the filename of the executable belonging to the current process, or 0 if not found.
getexename(char * buf)92 char* getexename(char *buf)
93 {
94 /* Now read the symbolic link */
95 int ret = readlink(LINK_NAME, buf, PATH_MAX);
96
97 if(ret == -1)
98 {
99 globalOutputStream() << "getexename: falling back to argv[0]: " << makeQuoted(g_argv[0]);
100 const char* path = realpath(g_argv[0], buf);
101 if(path == 0)
102 {
103 /* In case of an error, leave the handling up to the caller */
104 return "";
105 }
106 }
107
108 /* Ensure proper NUL termination */
109 buf[ret] = 0;
110
111 /* delete the program name */
112 *(strrchr(buf, '/')) = '\0';
113
114 // NOTE: we build app path with a trailing '/'
115 // it's a general convention in Radiant to have the slash at the end of directories
116 if (buf[strlen(buf)-1] != '/')
117 {
118 strcat(buf, "/");
119 }
120
121 return buf;
122 }
123
environment_init(int argc,char * argv[])124 void environment_init(int argc, char* argv[])
125 {
126 // Give away unnecessary root privileges.
127 // Important: must be done before calling gtk_init().
128 char *loginname;
129 struct passwd *pw;
130 seteuid(getuid());
131 if (geteuid() == 0 && (loginname = getlogin()) != 0 &&
132 (pw = getpwnam(loginname)) != 0)
133 setuid(pw->pw_uid);
134
135 args_init(argc, argv);
136
137 {
138 StringOutputStream home(256);
139 home << DirectoryCleaned(g_get_home_dir()) << ".radiant/";
140 Q_mkdir(home.c_str());
141 home_path = home.c_str();
142 }
143 {
144 char real[PATH_MAX];
145 app_path = getexename(real);
146 ASSERT_MESSAGE(!string_empty(app_path.c_str()), "failed to deduce app path");
147 }
148 }
149
150 #endif
151
152 #ifdef WIN32
153
154 #include <windows.h>
155 #include <shfolder.h>
156
environment_init(int argc,char * argv[])157 void environment_init(int argc, char* argv[])
158 {
159 args_init(argc, argv);
160
161 {
162 char appdata[MAX_PATH+1];
163 SHGetFolderPath(0, CSIDL_APPDATA, 0, 0, appdata);
164
165 StringOutputStream home(256);
166 if(string_empty(appdata))
167 {
168 ERROR_MESSAGE("Application Data folder not available.\n"
169 "Please install shfolder redistributable package.\n"
170 "Radiant will use C:\\ for user preferences.\n");
171 home << "C:";
172 }
173 else
174 {
175 home << PathCleaned(appdata);
176 }
177 home << "/RadiantSettings/";
178 Q_mkdir(home.c_str());
179 home_path = home.c_str();
180 }
181 {
182 // get path to the editor
183 char filename[MAX_PATH+1];
184 GetModuleFileName(0, filename, MAX_PATH);
185 char* last_separator = strrchr(filename, '\\');
186 if(last_separator != 0)
187 {
188 *(last_separator+1) = '\0';
189 }
190 else
191 {
192 filename[0] = '\0';
193 }
194 StringOutputStream app(256);
195 app << PathCleaned(filename);
196 app_path = app.c_str();
197 }
198 }
199
200 #endif
201