1 /* Execute a C# program.
2 Copyright (C) 2003-2023 Free Software Foundation, Inc.
3 Written by Bruno Haible <bruno@clisp.org>, 2003.
4
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation, either version 3 of the License, or
8 (at your option) any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <https://www.gnu.org/licenses/>. */
17
18 #include <config.h>
19 #include <alloca.h>
20
21 /* Specification. */
22 #include "csharpexec.h"
23
24 #include <stdio.h>
25 #include <stdlib.h>
26
27 #include "execute.h"
28 #include "sh-quote.h"
29 #include "xmalloca.h"
30 #include "error.h"
31 #include "gettext.h"
32
33 /* Handling of MONO_PATH is just like Java CLASSPATH. */
34 #define CLASSPATHVAR "MONO_PATH"
35 #define new_classpath new_monopath
36 #define set_classpath set_monopath
37 #define reset_classpath reset_monopath
38 #include "classpath.h"
39 #include "classpath.c"
40 #undef reset_classpath
41 #undef set_classpath
42 #undef new_classpath
43 #undef CLASSPATHVAR
44
45 /* Handling of clix' PATH variable is just like Java CLASSPATH. */
46 #if defined _WIN32 || defined __CYGWIN__
47 /* Native Windows, Cygwin */
48 #define CLASSPATHVAR "PATH"
49 #elif defined __APPLE__ && defined __MACH__
50 /* Mac OS X */
51 #define CLASSPATHVAR "DYLD_LIBRARY_PATH"
52 #else
53 /* Normal Unix */
54 #define CLASSPATHVAR "LD_LIBRARY_PATH"
55 #endif
56 #define new_classpath new_clixpath
57 #define set_classpath set_clixpath
58 #define reset_classpath reset_clixpath
59 #include "classpath.h"
60 #include "classpath.c"
61 #undef reset_classpath
62 #undef set_classpath
63 #undef new_classpath
64 #undef CLASSPATHVAR
65
66 #define _(str) gettext (str)
67
68
69 /* Survey of CIL interpreters.
70
71 Program from
72
73 mono mono
74 clix sscli
75
76 With Mono, the MONO_PATH is a colon separated list of pathnames. (On
77 Windows: semicolon separated list of pathnames.)
78
79 We try the CIL interpreters in the following order:
80 1. "mono", because it is a partially free system but doesn't integrate
81 well with Unix.
82 2. "clix", although it is not free, because it is a kind of "reference
83 implementation" of C#.
84 But the order can be changed through the --enable-csharp configuration
85 option.
86 */
87
88 static int
89 execute_csharp_using_mono (const char *assembly_path,
90 const char * const *libdirs,
91 unsigned int libdirs_count,
92 const char * const *args, unsigned int nargs,
93 bool verbose, bool quiet,
94 execute_fn *executer, void *private_data)
95 {
96 static bool mono_tested;
97 static bool mono_present;
98
99 if (!mono_tested)
100 {
101 /* Test for presence of mono:
102 "mono --version >/dev/null 2>/dev/null" */
103 const char *argv[3];
104 int exitstatus;
105
106 argv[0] = "mono";
107 argv[1] = "--version";
108 argv[2] = NULL;
109 exitstatus = execute ("mono", "mono", argv, NULL,
110 false, false, true, true,
111 true, false, NULL);
112 mono_present = (exitstatus == 0);
113 mono_tested = true;
114 }
115
116 if (mono_present)
117 {
118 char *old_monopath;
119 const char **argv =
120 (const char **) xmalloca ((2 + nargs + 1) * sizeof (const char *));
121 unsigned int i;
122 bool err;
123
124 /* Set MONO_PATH. */
125 old_monopath = set_monopath (libdirs, libdirs_count, false, verbose);
126
127 argv[0] = "mono";
128 argv[1] = assembly_path;
129 for (i = 0; i <= nargs; i++)
130 argv[2 + i] = args[i];
131
132 if (verbose)
133 {
134 char *command = shell_quote_argv (argv);
135 printf ("%s\n", command);
136 free (command);
137 }
138
139 err = executer ("mono", "mono", argv, private_data);
140
141 /* Reset MONO_PATH. */
142 reset_monopath (old_monopath);
143
144 freea (argv);
145
146 return err;
147 }
148 else
149 return -1;
150 }
151
152 static int
153 execute_csharp_using_sscli (const char *assembly_path,
154 const char * const *libdirs,
155 unsigned int libdirs_count,
156 const char * const *args, unsigned int nargs,
157 bool verbose, bool quiet,
158 execute_fn *executer, void *private_data)
159 {
160 static bool clix_tested;
161 static bool clix_present;
162
163 if (!clix_tested)
164 {
165 /* Test for presence of clix:
166 "clix >/dev/null 2>/dev/null ; test $? = 1" */
167 const char *argv[2];
168 int exitstatus;
169
170 argv[0] = "clix";
171 argv[1] = NULL;
172 exitstatus = execute ("clix", "clix", argv, NULL,
173 false, false, true, true,
174 true, false, NULL);
175 clix_present = (exitstatus == 0 || exitstatus == 1);
176 clix_tested = true;
177 }
178
179 if (clix_present)
180 {
181 char *old_clixpath;
182 const char **argv =
183 (const char **) xmalloca ((2 + nargs + 1) * sizeof (const char *));
184 unsigned int i;
185 bool err;
186
187 /* Set clix' PATH variable. */
188 old_clixpath = set_clixpath (libdirs, libdirs_count, false, verbose);
189
190 argv[0] = "clix";
191 argv[1] = assembly_path;
192 for (i = 0; i <= nargs; i++)
193 argv[2 + i] = args[i];
194
195 if (verbose)
196 {
197 char *command = shell_quote_argv (argv);
198 printf ("%s\n", command);
199 free (command);
200 }
201
202 err = executer ("clix", "clix", argv, private_data);
203
204 /* Reset clix' PATH variable. */
205 reset_clixpath (old_clixpath);
206
207 freea (argv);
208
209 return err;
210 }
211 else
212 return -1;
213 }
214
215 bool
216 execute_csharp_program (const char *assembly_path,
217 const char * const *libdirs,
218 unsigned int libdirs_count,
219 const char * const *args,
220 bool verbose, bool quiet,
221 execute_fn *executer, void *private_data)
222 {
223 unsigned int nargs;
224 int result;
225
226 /* Count args. */
227 {
228 const char * const *arg;
229
230 for (nargs = 0, arg = args; *arg != NULL; nargs++, arg++)
231 ;
232 }
233
234 /* First try the C# implementation specified through --enable-csharp. */
235 #if CSHARP_CHOICE_MONO
236 result = execute_csharp_using_mono (assembly_path, libdirs, libdirs_count,
237 args, nargs, verbose, quiet,
238 executer, private_data);
239 if (result >= 0)
240 return (bool) result;
241 #endif
242
243 /* Then try the remaining C# implementations in our standard order. */
244 #if !CSHARP_CHOICE_MONO
245 result = execute_csharp_using_mono (assembly_path, libdirs, libdirs_count,
246 args, nargs, verbose, quiet,
247 executer, private_data);
248 if (result >= 0)
249 return (bool) result;
250 #endif
251
252 result = execute_csharp_using_sscli (assembly_path, libdirs, libdirs_count,
253 args, nargs, verbose, quiet,
254 executer, private_data);
255 if (result >= 0)
256 return (bool) result;
257
258 if (!quiet)
259 error (0, 0, _("C# virtual machine not found, try installing mono"));
260 return true;
261 }