Line data Source code
1 : /* homedir.c - Setup the home directory.
2 : * Copyright (C) 2004, 2006, 2007, 2010 Free Software Foundation, Inc.
3 : * Copyright (C) 2013, 2016 Werner Koch
4 : *
5 : * This file is part of GnuPG.
6 : *
7 : * This file is free software; you can redistribute it and/or modify
8 : * it under the terms of either
9 : *
10 : * - the GNU Lesser General Public License as published by the Free
11 : * Software Foundation; either version 3 of the License, or (at
12 : * your option) any later version.
13 : *
14 : * or
15 : *
16 : * - the GNU General Public License as published by the Free
17 : * Software Foundation; either version 2 of the License, or (at
18 : * your option) any later version.
19 : *
20 : * or both in parallel, as here.
21 : *
22 : * This file is distributed in the hope that it will be useful,
23 : * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 : * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 : * GNU General Public License for more details.
26 : *
27 : * You should have received a copy of the GNU General Public License
28 : * along with this program; if not, see <https://www.gnu.org/licenses/>.
29 : */
30 :
31 : #include <config.h>
32 : #include <stdlib.h>
33 : #include <errno.h>
34 : #include <fcntl.h>
35 : #include <unistd.h>
36 :
37 : #ifdef HAVE_W32_SYSTEM
38 : #include <winsock2.h> /* Due to the stupid mingw64 requirement to
39 : include this header before windows.h which
40 : is often implicitly included. */
41 : #include <shlobj.h>
42 : #ifndef CSIDL_APPDATA
43 : #define CSIDL_APPDATA 0x001a
44 : #endif
45 : #ifndef CSIDL_LOCAL_APPDATA
46 : #define CSIDL_LOCAL_APPDATA 0x001c
47 : #endif
48 : #ifndef CSIDL_COMMON_APPDATA
49 : #define CSIDL_COMMON_APPDATA 0x0023
50 : #endif
51 : #ifndef CSIDL_FLAG_CREATE
52 : #define CSIDL_FLAG_CREATE 0x8000
53 : #endif
54 : #endif /*HAVE_W32_SYSTEM*/
55 :
56 : #ifdef HAVE_STAT
57 : #include <sys/stat.h> /* for stat() */
58 : #endif
59 :
60 :
61 :
62 : #include "util.h"
63 : #include "sysutils.h"
64 : #include "zb32.h"
65 :
66 : /* The GnuPG homedir. This is only accessed by the functions
67 : * gnupg_homedir and gnupg_set_homedir. Malloced. */
68 : static char *the_gnupg_homedir;
69 :
70 : /* Flag indicating that home directory is not the default one. */
71 : static byte non_default_homedir;
72 :
73 :
74 : #ifdef HAVE_W32_SYSTEM
75 : /* A flag used to indicate that a control file for gpgconf has been
76 : detected. Under Windows the presence of this file indicates a
77 : portable installations and triggers several changes:
78 :
79 : - The GNUGHOME directory is fixed relative to installation
80 : directory. All other means to set the home directory are ignore.
81 :
82 : - All registry variables will be ignored.
83 :
84 : This flag is not used on Unix systems.
85 : */
86 : static byte w32_portable_app;
87 : #endif /*HAVE_W32_SYSTEM*/
88 :
89 : #ifdef HAVE_W32_SYSTEM
90 : /* This flag is true if this process' binary has been installed under
91 : bin and not in the root directory as often used before GnuPG 2.1. */
92 : static byte w32_bin_is_bin;
93 : #endif /*HAVE_W32_SYSTEM*/
94 :
95 :
96 : #ifdef HAVE_W32_SYSTEM
97 : static const char *w32_rootdir (void);
98 : #endif
99 :
100 :
101 :
102 : #ifdef HAVE_W32_SYSTEM
103 : static void
104 : w32_try_mkdir (const char *dir)
105 : {
106 : #ifdef HAVE_W32CE_SYSTEM
107 : wchar_t *wdir = utf8_to_wchar (dir);
108 : if (wdir)
109 : {
110 : CreateDirectory (wdir, NULL);
111 : xfree (wdir);
112 : }
113 : #else
114 : CreateDirectory (dir, NULL);
115 : #endif
116 : }
117 : #endif
118 :
119 :
120 : /* This is a helper function to load a Windows function from either of
121 : one DLLs. */
122 : #ifdef HAVE_W32_SYSTEM
123 : static HRESULT
124 : w32_shgetfolderpath (HWND a, int b, HANDLE c, DWORD d, LPSTR e)
125 : {
126 : static int initialized;
127 : static HRESULT (WINAPI * func)(HWND,int,HANDLE,DWORD,LPSTR);
128 :
129 : if (!initialized)
130 : {
131 : static char *dllnames[] = { "shell32.dll", "shfolder.dll", NULL };
132 : void *handle;
133 : int i;
134 :
135 : initialized = 1;
136 :
137 : for (i=0, handle = NULL; !handle && dllnames[i]; i++)
138 : {
139 : handle = dlopen (dllnames[i], RTLD_LAZY);
140 : if (handle)
141 : {
142 : func = dlsym (handle, "SHGetFolderPathA");
143 : if (!func)
144 : {
145 : dlclose (handle);
146 : handle = NULL;
147 : }
148 : }
149 : }
150 : }
151 :
152 : if (func)
153 : return func (a,b,c,d,e);
154 : else
155 : return -1;
156 : }
157 : #endif /*HAVE_W32_SYSTEM*/
158 :
159 :
160 : /* Check whether DIR is the default homedir. */
161 : static int
162 1600 : is_gnupg_default_homedir (const char *dir)
163 : {
164 : int result;
165 1600 : char *a = make_absfilename (dir, NULL);
166 1600 : char *b = make_absfilename (GNUPG_DEFAULT_HOMEDIR, NULL);
167 1600 : result = !compare_filenames (a, b);
168 1600 : xfree (b);
169 1600 : xfree (a);
170 1600 : return result;
171 : }
172 :
173 :
174 : /* Get the standard home directory. In general this function should
175 : not be used as it does not consider a registry value (under W32) or
176 : the GNUPGHOME environment variable. It is better to use
177 : default_homedir(). */
178 : const char *
179 50 : standard_homedir (void)
180 : {
181 : #ifdef HAVE_W32_SYSTEM
182 : static const char *dir;
183 :
184 : if (!dir)
185 : {
186 : const char *rdir;
187 :
188 : rdir = w32_rootdir ();
189 : if (w32_portable_app)
190 : {
191 : dir = xstrconcat (rdir, DIRSEP_S "home", NULL);
192 : }
193 : else
194 : {
195 : char path[MAX_PATH];
196 :
197 : /* It might be better to use LOCAL_APPDATA because this is
198 : defined as "non roaming" and thus more likely to be kept
199 : locally. For private keys this is desired. However,
200 : given that many users copy private keys anyway forth and
201 : back, using a system roaming services might be better
202 : than to let them do it manually. A security conscious
203 : user will anyway use the registry entry to have better
204 : control. */
205 : if (w32_shgetfolderpath (NULL, CSIDL_APPDATA|CSIDL_FLAG_CREATE,
206 : NULL, 0, path) >= 0)
207 : {
208 : char *tmp = xmalloc (strlen (path) + 6 +1);
209 : strcpy (stpcpy (tmp, path), "\\gnupg");
210 : dir = tmp;
211 :
212 : /* Try to create the directory if it does not yet exists. */
213 : if (access (dir, F_OK))
214 : w32_try_mkdir (dir);
215 : }
216 : else
217 : dir = GNUPG_DEFAULT_HOMEDIR;
218 : }
219 : }
220 : return dir;
221 : #else/*!HAVE_W32_SYSTEM*/
222 50 : return GNUPG_DEFAULT_HOMEDIR;
223 : #endif /*!HAVE_W32_SYSTEM*/
224 : }
225 :
226 : /* Set up the default home directory. The usual --homedir option
227 : should be parsed later. */
228 : const char *
229 1549 : default_homedir (void)
230 : {
231 : const char *dir;
232 :
233 : #ifdef HAVE_W32_SYSTEM
234 : /* For a portable application we only use the standard homedir. */
235 : w32_rootdir ();
236 : if (w32_portable_app)
237 : return standard_homedir ();
238 : #endif /*HAVE_W32_SYSTEM*/
239 :
240 1549 : dir = getenv ("GNUPGHOME");
241 : #ifdef HAVE_W32_SYSTEM
242 : if (!dir || !*dir)
243 : {
244 : static const char *saved_dir;
245 :
246 : if (!saved_dir)
247 : {
248 : if (!dir || !*dir)
249 : {
250 : char *tmp;
251 :
252 : tmp = read_w32_registry_string (NULL,
253 : GNUPG_REGISTRY_DIR,
254 : "HomeDir");
255 : if (tmp && !*tmp)
256 : {
257 : xfree (tmp);
258 : tmp = NULL;
259 : }
260 : if (tmp)
261 : saved_dir = tmp;
262 : }
263 :
264 : if (!saved_dir)
265 : saved_dir = standard_homedir ();
266 : }
267 : dir = saved_dir;
268 : }
269 : #endif /*HAVE_W32_SYSTEM*/
270 1549 : if (!dir || !*dir)
271 49 : dir = GNUPG_DEFAULT_HOMEDIR;
272 1500 : else if (!is_gnupg_default_homedir (dir))
273 1500 : non_default_homedir = 1;
274 :
275 1549 : return dir;
276 : }
277 :
278 :
279 : #ifdef HAVE_W32_SYSTEM
280 : /* Check whether gpgconf is installed and if so read the gpgconf.ctl
281 : file. */
282 : static void
283 : check_portable_app (const char *dir)
284 : {
285 : char *fname;
286 :
287 : fname = xstrconcat (dir, DIRSEP_S "gpgconf.exe", NULL);
288 : if (!access (fname, F_OK))
289 : {
290 : strcpy (fname + strlen (fname) - 3, "ctl");
291 : if (!access (fname, F_OK))
292 : {
293 : /* gpgconf.ctl file found. Record this fact. */
294 : w32_portable_app = 1;
295 : {
296 : unsigned int flags;
297 : log_get_prefix (&flags);
298 : log_set_prefix (NULL, (flags | GPGRT_LOG_NO_REGISTRY));
299 : }
300 : /* FIXME: We should read the file to detect special flags
301 : and print a warning if we don't understand them */
302 : }
303 : }
304 : xfree (fname);
305 : }
306 :
307 :
308 : /* Determine the root directory of the gnupg installation on Windows. */
309 : static const char *
310 : w32_rootdir (void)
311 : {
312 : static int got_dir;
313 : static char dir[MAX_PATH+5];
314 :
315 : if (!got_dir)
316 : {
317 : char *p;
318 : int rc;
319 : wchar_t wdir [MAX_PATH+5];
320 :
321 : rc = GetModuleFileNameW (NULL, wdir, MAX_PATH);
322 : if (rc && WideCharToMultiByte (CP_UTF8, 0, wdir, -1, dir, MAX_PATH-4,
323 : NULL, NULL) < 0)
324 : rc = 0;
325 : if (!rc)
326 : {
327 : log_debug ("GetModuleFileName failed: %s\n", w32_strerror (-1));
328 : *dir = 0;
329 : }
330 : got_dir = 1;
331 : p = strrchr (dir, DIRSEP_C);
332 : if (p)
333 : {
334 : *p = 0;
335 :
336 : check_portable_app (dir);
337 :
338 : /* If we are installed below "bin" we strip that and use
339 : the top directory instead. */
340 : p = strrchr (dir, DIRSEP_C);
341 : if (p && !strcmp (p+1, "bin"))
342 : {
343 : *p = 0;
344 : w32_bin_is_bin = 1;
345 : }
346 : }
347 : if (!p)
348 : {
349 : log_debug ("bad filename '%s' returned for this process\n", dir);
350 : *dir = 0;
351 : }
352 : }
353 :
354 : if (*dir)
355 : return dir;
356 : /* Fallback to the hardwired value. */
357 : return GNUPG_LIBEXECDIR;
358 : }
359 :
360 : static const char *
361 : w32_commondir (void)
362 : {
363 : static char *dir;
364 :
365 : if (!dir)
366 : {
367 : const char *rdir;
368 : char path[MAX_PATH];
369 :
370 : /* Make sure that w32_rootdir has been called so that we are
371 : able to check the portable application flag. The common dir
372 : is the identical to the rootdir. In that case there is also
373 : no need to strdup its value. */
374 : rdir = w32_rootdir ();
375 : if (w32_portable_app)
376 : return rdir;
377 :
378 : if (w32_shgetfolderpath (NULL, CSIDL_COMMON_APPDATA,
379 : NULL, 0, path) >= 0)
380 : {
381 : char *tmp = xmalloc (strlen (path) + 4 +1);
382 : strcpy (stpcpy (tmp, path), "\\GNU");
383 : dir = tmp;
384 : /* No auto create of the directory. Either the installer or
385 : the admin has to create these directories. */
386 : }
387 : else
388 : {
389 : /* Ooops: Not defined - probably an old Windows version.
390 : Use the installation directory instead. */
391 : dir = xstrdup (rdir);
392 : }
393 : }
394 :
395 : return dir;
396 : }
397 : #endif /*HAVE_W32_SYSTEM*/
398 :
399 :
400 : /* Change the homedir. Some care must be taken to set this early
401 : * enough because previous calls to gnupg_homedir may else return a
402 : * different string. */
403 : void
404 1327 : gnupg_set_homedir (const char *newdir)
405 : {
406 1327 : if (!newdir || !*newdir)
407 1227 : newdir = default_homedir ();
408 100 : else if (!is_gnupg_default_homedir (newdir))
409 100 : non_default_homedir = 1;
410 1327 : xfree (the_gnupg_homedir);
411 1327 : the_gnupg_homedir = make_absfilename (newdir, NULL);;
412 1327 : }
413 :
414 :
415 : /* Return the homedir. The returned string is valid until another
416 : * gnupg-set-homedir call. This is always an absolute directory name.
417 : * The function replaces the former global var opt.homedir. */
418 : const char *
419 14589 : gnupg_homedir (void)
420 : {
421 : /* If a homedir has not been set, set it to the default. */
422 14589 : if (!the_gnupg_homedir)
423 322 : the_gnupg_homedir = make_absfilename (default_homedir (), NULL);
424 14589 : return the_gnupg_homedir;
425 : }
426 :
427 :
428 : /* Return whether the home dir is the default one. */
429 : int
430 5 : gnupg_default_homedir_p (void)
431 : {
432 5 : return !non_default_homedir;
433 : }
434 :
435 :
436 : /* Helper for gnupg-socketdir. This is a global function, so that
437 : * gpgconf can use it for its --create-socketdir command. If
438 : * SKIP_CHECKS is set permission checks etc. are not done. The
439 : * function always returns a malloced directory name and stores these
440 : * bit flags at R_INFO:
441 : *
442 : * 1 := Internal error, stat failed, out of core, etc.
443 : * 2 := No /run/user directory.
444 : * 4 := Directory not owned by the user, not a directory
445 : * or wrong permissions.
446 : * 8 := Same as 4 but for the subdir.
447 : * 16 := mkdir failed
448 : * 32 := Non default homedir; checking subdir.
449 : * 64 := Subdir does not exist.
450 : * 128 := Using homedir as fallback.
451 : */
452 : char *
453 991 : _gnupg_socketdir_internal (int skip_checks, unsigned *r_info)
454 : {
455 : #if defined(HAVE_W32_SYSTEM) || !defined(HAVE_STAT)
456 :
457 : char *name;
458 :
459 : (void)skip_checks;
460 : *r_info = 0;
461 : name = xstrdup (gnupg_homedir ());
462 :
463 : #else /* Unix and stat(2) available. */
464 :
465 : static const char * const bases[] = { "/run", "/var/run", NULL};
466 : int i;
467 : struct stat sb;
468 : char prefix[13 + 1 + 20 + 6 + 1];
469 : const char *s;
470 991 : char *name = NULL;
471 :
472 991 : *r_info = 0;
473 :
474 : /* First make sure that non_default_homedir can be set. */
475 991 : gnupg_homedir ();
476 :
477 : /* It has been suggested to first check XDG_RUNTIME_DIR envvar.
478 : * However, the specs state that the lifetime of the directory MUST
479 : * be bound to the user being logged in. Now GnuPG may also be run
480 : * as a background process with no (desktop) user logged in. Thus
481 : * we better don't do that. */
482 :
483 : /* Check whether we have a /run/user dir. */
484 991 : for (i=0; bases[i]; i++)
485 : {
486 991 : snprintf (prefix, sizeof prefix, "%s/user/%u",
487 : bases[i], (unsigned int)getuid ());
488 991 : if (!stat (prefix, &sb) && S_ISDIR(sb.st_mode))
489 991 : break;
490 : }
491 991 : if (!bases[i])
492 : {
493 0 : *r_info |= 2; /* No /run/user directory. */
494 0 : goto leave;
495 : }
496 :
497 991 : if (sb.st_uid != getuid ())
498 : {
499 0 : *r_info |= 4; /* Not owned by the user. */
500 0 : if (!skip_checks)
501 0 : goto leave;
502 : }
503 :
504 991 : if (strlen (prefix) + 7 >= sizeof prefix)
505 : {
506 0 : *r_info |= 1; /* Ooops: Buffer too short to append "/gnupg". */
507 0 : goto leave;
508 : }
509 991 : strcat (prefix, "/gnupg");
510 :
511 : /* Check whether the gnupg sub directory has proper permissions. */
512 991 : if (stat (prefix, &sb))
513 : {
514 0 : if (errno != ENOENT)
515 : {
516 0 : *r_info |= 1; /* stat failed. */
517 0 : goto leave;
518 : }
519 :
520 : /* Try to create the directory and check again. */
521 0 : if (gnupg_mkdir (prefix, "-rwx"))
522 : {
523 0 : *r_info |= 16; /* mkdir failed. */
524 0 : goto leave;
525 : }
526 0 : if (stat (prefix, &sb))
527 : {
528 0 : *r_info |= 1; /* stat failed. */
529 0 : goto leave;
530 : }
531 : }
532 : /* Check that it is a directory, owned by the user, and only the
533 : * user has permissions to use it. */
534 991 : if (!S_ISDIR(sb.st_mode)
535 991 : || sb.st_uid != getuid ()
536 991 : || (sb.st_mode & (S_IRWXG|S_IRWXO)))
537 : {
538 0 : *r_info |= 4; /* Bad permissions or not a directory. */
539 0 : if (!skip_checks)
540 0 : goto leave;
541 : }
542 :
543 : /* If a non default homedir is used, we check whether an
544 : * corresponding sub directory below the socket dir is available
545 : * and use that. We has the non default homedir to keep the new
546 : * subdir short enough. */
547 991 : if (non_default_homedir)
548 : {
549 : char sha1buf[20];
550 : char *suffix;
551 :
552 991 : *r_info |= 32; /* Testing subdir. */
553 991 : s = gnupg_homedir ();
554 991 : gcry_md_hash_buffer (GCRY_MD_SHA1, sha1buf, s, strlen (s));
555 991 : suffix = zb32_encode (sha1buf, 8*15);
556 991 : if (!suffix)
557 : {
558 0 : *r_info |= 1; /* Out of core etc. */
559 69 : goto leave;
560 : }
561 991 : name = strconcat (prefix, "/d.", suffix, NULL);
562 991 : xfree (suffix);
563 991 : if (!name)
564 : {
565 0 : *r_info |= 1; /* Out of core etc. */
566 0 : goto leave;
567 : }
568 :
569 : /* Stat that directory and check constraints. Note that we
570 : * do not auto create such a directory because we would not
571 : * have a way to remove it. Thus the directory needs to be
572 : * pre-created. The command
573 : * gpgconf --create-socketdir
574 : * can be used tocreate that directory. */
575 991 : if (stat (name, &sb))
576 : {
577 115 : if (errno != ENOENT)
578 0 : *r_info |= 1; /* stat failed. */
579 : else
580 115 : *r_info |= 64; /* Subdir does not exist. */
581 115 : if (!skip_checks)
582 : {
583 69 : xfree (name);
584 69 : name = NULL;
585 69 : goto leave;
586 : }
587 : }
588 876 : else if (!S_ISDIR(sb.st_mode)
589 876 : || sb.st_uid != getuid ()
590 876 : || (sb.st_mode & (S_IRWXG|S_IRWXO)))
591 : {
592 0 : *r_info |= 8; /* Bad permissions or subdir is not a directory. */
593 0 : if (!skip_checks)
594 : {
595 0 : xfree (name);
596 0 : name = NULL;
597 0 : goto leave;
598 : }
599 : }
600 : }
601 : else
602 0 : name = xstrdup (prefix);
603 :
604 : leave:
605 : /* If nothing works fall back to the homedir. */
606 991 : if (!name)
607 : {
608 69 : *r_info |= 128; /* Fallback. */
609 69 : name = xstrdup (gnupg_homedir ());
610 : }
611 :
612 : #endif /* Unix */
613 :
614 991 : return name;
615 : }
616 :
617 :
618 : /*
619 : * Return the name of the socket dir. That is the directory used for
620 : * the IPC local sockets. This is an absolute directory name.
621 : */
622 : const char *
623 1010 : gnupg_socketdir (void)
624 : {
625 : static char *name;
626 :
627 1010 : if (!name)
628 : {
629 : unsigned int dummy;
630 855 : name = _gnupg_socketdir_internal (0, &dummy);
631 : }
632 :
633 1010 : return name;
634 : }
635 :
636 :
637 : /* Return the name of the sysconfdir. This is a static string. This
638 : function is required because under Windows we can't simply compile
639 : it in. */
640 : const char *
641 2 : gnupg_sysconfdir (void)
642 : {
643 : #ifdef HAVE_W32_SYSTEM
644 : static char *name;
645 :
646 : if (!name)
647 : {
648 : const char *s1, *s2;
649 : s1 = w32_commondir ();
650 : s2 = DIRSEP_S "etc" DIRSEP_S "gnupg";
651 : name = xmalloc (strlen (s1) + strlen (s2) + 1);
652 : strcpy (stpcpy (name, s1), s2);
653 : }
654 : return name;
655 : #else /*!HAVE_W32_SYSTEM*/
656 2 : return GNUPG_SYSCONFDIR;
657 : #endif /*!HAVE_W32_SYSTEM*/
658 : }
659 :
660 :
661 : const char *
662 39 : gnupg_bindir (void)
663 : {
664 : #if defined (HAVE_W32CE_SYSTEM)
665 : static char *name;
666 :
667 : if (!name)
668 : name = xstrconcat (w32_rootdir (), DIRSEP_S "bin", NULL);
669 : return name;
670 : #elif defined(HAVE_W32_SYSTEM)
671 : const char *rdir;
672 :
673 : rdir = w32_rootdir ();
674 : if (w32_bin_is_bin)
675 : {
676 : static char *name;
677 :
678 : if (!name)
679 : name = xstrconcat (rdir, DIRSEP_S "bin", NULL);
680 : return name;
681 : }
682 : else
683 : return rdir;
684 : #else /*!HAVE_W32_SYSTEM*/
685 39 : return GNUPG_BINDIR;
686 : #endif /*!HAVE_W32_SYSTEM*/
687 : }
688 :
689 :
690 : /* Return the name of the libexec directory. The name is allocated in
691 : a static area on the first use. This function won't fail. */
692 : const char *
693 2 : gnupg_libexecdir (void)
694 : {
695 : #ifdef HAVE_W32_SYSTEM
696 : return gnupg_bindir ();
697 : #else /*!HAVE_W32_SYSTEM*/
698 2 : return GNUPG_LIBEXECDIR;
699 : #endif /*!HAVE_W32_SYSTEM*/
700 : }
701 :
702 : const char *
703 1 : gnupg_libdir (void)
704 : {
705 : #ifdef HAVE_W32_SYSTEM
706 : static char *name;
707 :
708 : if (!name)
709 : name = xstrconcat (w32_rootdir (), DIRSEP_S "lib" DIRSEP_S "gnupg", NULL);
710 : return name;
711 : #else /*!HAVE_W32_SYSTEM*/
712 1 : return GNUPG_LIBDIR;
713 : #endif /*!HAVE_W32_SYSTEM*/
714 : }
715 :
716 : const char *
717 3 : gnupg_datadir (void)
718 : {
719 : #ifdef HAVE_W32_SYSTEM
720 : static char *name;
721 :
722 : if (!name)
723 : name = xstrconcat (w32_rootdir (), DIRSEP_S "share" DIRSEP_S "gnupg", NULL);
724 : return name;
725 : #else /*!HAVE_W32_SYSTEM*/
726 3 : return GNUPG_DATADIR;
727 : #endif /*!HAVE_W32_SYSTEM*/
728 : }
729 :
730 :
731 : const char *
732 1 : gnupg_localedir (void)
733 : {
734 : #ifdef HAVE_W32_SYSTEM
735 : static char *name;
736 :
737 : if (!name)
738 : name = xstrconcat (w32_rootdir (), DIRSEP_S "share" DIRSEP_S "locale",
739 : NULL);
740 : return name;
741 : #else /*!HAVE_W32_SYSTEM*/
742 1 : return LOCALEDIR;
743 : #endif /*!HAVE_W32_SYSTEM*/
744 : }
745 :
746 :
747 : /* Return the name of the cache directory. The name is allocated in a
748 : static area on the first use. Windows only: If the directory does
749 : not exist it is created. */
750 : const char *
751 0 : gnupg_cachedir (void)
752 : {
753 : #ifdef HAVE_W32_SYSTEM
754 : static const char *dir;
755 :
756 : if (!dir)
757 : {
758 : const char *rdir;
759 :
760 : rdir = w32_rootdir ();
761 : if (w32_portable_app)
762 : {
763 : dir = xstrconcat (rdir,
764 : DIRSEP_S, "var",
765 : DIRSEP_S, "cache",
766 : DIRSEP_S, "gnupg", NULL);
767 : }
768 : else
769 : {
770 : char path[MAX_PATH];
771 : const char *s1[] = { "GNU", "cache", "gnupg", NULL };
772 : int s1_len;
773 : const char **comp;
774 :
775 : s1_len = 0;
776 : for (comp = s1; *comp; comp++)
777 : s1_len += 1 + strlen (*comp);
778 :
779 : if (w32_shgetfolderpath (NULL, CSIDL_LOCAL_APPDATA|CSIDL_FLAG_CREATE,
780 : NULL, 0, path) >= 0)
781 : {
782 : char *tmp = xmalloc (strlen (path) + s1_len + 1);
783 : char *p;
784 :
785 : p = stpcpy (tmp, path);
786 : for (comp = s1; *comp; comp++)
787 : {
788 : p = stpcpy (p, "\\");
789 : p = stpcpy (p, *comp);
790 :
791 : if (access (tmp, F_OK))
792 : w32_try_mkdir (tmp);
793 : }
794 :
795 : dir = tmp;
796 : }
797 : else
798 : {
799 : dir = "c:\\temp\\cache\\gnupg";
800 : #ifdef HAVE_W32CE_SYSTEM
801 : dir += 2;
802 : w32_try_mkdir ("\\temp\\cache");
803 : w32_try_mkdir ("\\temp\\cache\\gnupg");
804 : #endif
805 : }
806 : }
807 : }
808 : return dir;
809 : #else /*!HAVE_W32_SYSTEM*/
810 0 : return GNUPG_LOCALSTATEDIR "/cache/" PACKAGE_NAME;
811 : #endif /*!HAVE_W32_SYSTEM*/
812 : }
813 :
814 :
815 : /* Return the user socket name used by DirMngr. */
816 : const char *
817 1 : dirmngr_socket_name (void)
818 : {
819 : static char *name;
820 :
821 1 : if (!name)
822 1 : name = make_filename (gnupg_socketdir (), DIRMNGR_SOCK_NAME, NULL);
823 1 : return name;
824 : }
825 :
826 :
827 : /* Return the default pinentry name. If RESET is true the internal
828 : cache is first flushed. */
829 : static const char *
830 0 : get_default_pinentry_name (int reset)
831 : {
832 : static struct {
833 : const char *(*rfnc)(void);
834 : const char *name;
835 : } names[] = {
836 : /* The first entry is what we return in case we found no
837 : other pinentry. */
838 : { gnupg_bindir, DIRSEP_S "pinentry" EXEEXT_S },
839 : #ifdef HAVE_W32_SYSTEM
840 : /* Try Gpg4win directory (with bin and without.) */
841 : { w32_rootdir, "\\..\\Gpg4win\\bin\\pinentry.exe" },
842 : { w32_rootdir, "\\..\\Gpg4win\\pinentry.exe" },
843 : /* Try old Gpgwin directory. */
844 : { w32_rootdir, "\\..\\GNU\\GnuPG\\pinentry.exe" },
845 : /* Try a Pinentry from the common GNU dir. */
846 : { w32_rootdir, "\\..\\GNU\\bin\\pinentry.exe" },
847 : #endif
848 : /* Last chance is a pinentry-basic (which comes with the
849 : GnuPG 2.1 Windows installer). */
850 : { gnupg_bindir, DIRSEP_S "pinentry-basic" EXEEXT_S }
851 : };
852 : static char *name;
853 :
854 0 : if (reset)
855 : {
856 0 : xfree (name);
857 0 : name = NULL;
858 : }
859 :
860 0 : if (!name)
861 : {
862 : int i;
863 :
864 0 : for (i=0; i < DIM(names); i++)
865 : {
866 : char *name2;
867 :
868 0 : name2 = xstrconcat (names[i].rfnc (), names[i].name, NULL);
869 0 : if (!access (name2, F_OK))
870 : {
871 : /* Use that pinentry. */
872 0 : xfree (name);
873 0 : name = name2;
874 0 : break;
875 : }
876 0 : if (!i) /* Store the first as fallback return. */
877 0 : name = name2;
878 : else
879 0 : xfree (name2);
880 : }
881 : }
882 :
883 0 : return name;
884 : }
885 :
886 :
887 : /* Return the file name of a helper tool. WHICH is one of the
888 : GNUPG_MODULE_NAME_foo constants. */
889 : const char *
890 39 : gnupg_module_name (int which)
891 : {
892 : #define X(a,b) do { \
893 : static char *name; \
894 : if (!name) \
895 : name = xstrconcat (gnupg_ ## a (), DIRSEP_S b EXEEXT_S, NULL); \
896 : return name; \
897 : } while (0)
898 :
899 39 : switch (which)
900 : {
901 : case GNUPG_MODULE_NAME_AGENT:
902 : #ifdef GNUPG_DEFAULT_AGENT
903 : return GNUPG_DEFAULT_AGENT;
904 : #else
905 0 : X(bindir, "gpg-agent");
906 : #endif
907 :
908 : case GNUPG_MODULE_NAME_PINENTRY:
909 : #ifdef GNUPG_DEFAULT_PINENTRY
910 : return GNUPG_DEFAULT_PINENTRY; /* (Set by a configure option) */
911 : #else
912 0 : return get_default_pinentry_name (0);
913 : #endif
914 :
915 : case GNUPG_MODULE_NAME_SCDAEMON:
916 : #ifdef GNUPG_DEFAULT_SCDAEMON
917 : return GNUPG_DEFAULT_SCDAEMON;
918 : #else
919 1 : X(libexecdir, "scdaemon");
920 : #endif
921 :
922 : case GNUPG_MODULE_NAME_DIRMNGR:
923 : #ifdef GNUPG_DEFAULT_DIRMNGR
924 : return GNUPG_DEFAULT_DIRMNGR;
925 : #else
926 0 : X(bindir, DIRMNGR_NAME);
927 : #endif
928 :
929 : case GNUPG_MODULE_NAME_PROTECT_TOOL:
930 : #ifdef GNUPG_DEFAULT_PROTECT_TOOL
931 : return GNUPG_DEFAULT_PROTECT_TOOL;
932 : #else
933 0 : X(libexecdir, "gpg-protect-tool");
934 : #endif
935 :
936 : case GNUPG_MODULE_NAME_DIRMNGR_LDAP:
937 : #ifdef GNUPG_DEFAULT_DIRMNGR_LDAP
938 : return GNUPG_DEFAULT_DIRMNGR_LDAP;
939 : #else
940 0 : X(libexecdir, "dirmngr_ldap");
941 : #endif
942 :
943 : case GNUPG_MODULE_NAME_CHECK_PATTERN:
944 0 : X(libexecdir, "gpg-check-pattern");
945 :
946 : case GNUPG_MODULE_NAME_GPGSM:
947 0 : X(bindir, "gpgsm");
948 :
949 : case GNUPG_MODULE_NAME_GPG:
950 : #if USE_GPG2_HACK
951 38 : X(bindir, GPG_NAME "2");
952 : #else
953 : X(bindir, GPG_NAME);
954 : #endif
955 :
956 : case GNUPG_MODULE_NAME_GPGV:
957 : #if USE_GPG2_HACK
958 0 : X(bindir, GPG_NAME "v2");
959 : #else
960 : X(bindir, GPG_NAME "v");
961 : #endif
962 :
963 : case GNUPG_MODULE_NAME_CONNECT_AGENT:
964 0 : X(bindir, "gpg-connect-agent");
965 :
966 : case GNUPG_MODULE_NAME_GPGCONF:
967 0 : X(bindir, "gpgconf");
968 :
969 : default:
970 0 : BUG ();
971 : }
972 : #undef X
973 : }
974 :
975 :
976 : /* Flush some of the cached module names. This is for example used by
977 : gpg-agent to allow configuring a different pinentry. */
978 : void
979 0 : gnupg_module_name_flush_some (void)
980 : {
981 0 : (void)get_default_pinentry_name (1);
982 0 : }
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