/* homedir.c - Setup the home directory. * Copyright (C) 2004, 2006 Free Software Foundation, Inc. * * This file is part of GnuPG. * * GnuPG is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * GnuPG is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, * USA. */ #include #include #include #include #ifdef HAVE_W32_SYSTEM #include #ifndef CSIDL_APPDATA #define CSIDL_APPDATA 0x001a #endif #ifndef CSIDL_LOCAL_APPDATA #define CSIDL_LOCAL_APPDATA 0x001c #endif #ifndef CSIDL_FLAG_CREATE #define CSIDL_FLAG_CREATE 0x8000 #endif #endif /*HAVE_W32_SYSTEM*/ #include "util.h" #include "sysutils.h" /* This is a helper function to load a Windows function from either of one DLLs. */ #ifdef HAVE_W32_SYSTEM static HRESULT w32_shgetfolderpath (HWND a, int b, HANDLE c, DWORD d, LPSTR e) { static int initialized; static HRESULT (WINAPI * func)(HWND,int,HANDLE,DWORD,LPSTR); if (!initialized) { static char *dllnames[] = { "shell32.dll", "shfolder.dll", NULL }; void *handle; int i; initialized = 1; for (i=0, handle = NULL; !handle && dllnames[i]; i++) { handle = dlopen (dllnames[i], RTLD_LAZY); if (handle) { func = dlsym (handle, "SHGetFolderPathA"); if (!func) { dlclose (handle); handle = NULL; } } } } if (func) return func (a,b,c,d,e); else return -1; } #endif /*HAVE_W32_SYSTEM*/ /* Set up the default home directory. The usual --homedir option should be parsed later. */ const char * default_homedir (void) { const char *dir; dir = getenv("GNUPGHOME"); #ifdef HAVE_W32_SYSTEM if (!dir || !*dir) dir = read_w32_registry_string (NULL, "Software\\GNU\\GnuPG", "HomeDir"); if (!dir || !*dir) { char path[MAX_PATH]; /* It might be better to use LOCAL_APPDATA because this is defined as "non roaming" and thus more likely to be kept locally. For private keys this is desired. However, given that many users copy private keys anyway forth and back, using a system roaming services might be better than to let them do it manually. A security conscious user will anyway use the registry entry to have better control. */ if (w32_shgetfolderpath (NULL, CSIDL_APPDATA|CSIDL_FLAG_CREATE, NULL, 0, path) >= 0) { char *tmp = xmalloc (strlen (path) + 6 +1); strcpy (stpcpy (tmp, path), "\\gnupg"); dir = tmp; /* Try to create the directory if it does not yet exists. */ if (access (dir, F_OK)) CreateDirectory (dir, NULL); } } #endif /*HAVE_W32_SYSTEM*/ if (!dir || !*dir) dir = GNUPG_DEFAULT_HOMEDIR; return dir; } /* Return the name of the sysconfdir. This is a static string. This function is required because under Windows we can't simply compile it in. */ const char * gnupg_sysconfdir (void) { #ifdef HAVE_W32_SYSTEM #warning get the sysconfdir from somewhere else return GNUPG_SYSCONFDIR; #else /*!HAVE_W32_SYSTEM*/ return GNUPG_SYSCONFDIR; #endif /*!HAVE_W32_SYSTEM*/ } const char * gnupg_bindir (void) { #ifdef HAVE_W32_SYSTEM return gnupg_libexecdir (); #else /*!HAVE_W32_SYSTEM*/ return GNUPG_BINDIR; #endif /*!HAVE_W32_SYSTEM*/ } /* Return the name of the libexec directory. The name is allocated in a static area on the first use. This function won't fail. */ const char * gnupg_libexecdir (void) { #ifdef HAVE_W32_SYSTEM static int got_dir; static char dir[MAX_PATH+5]; if (!got_dir) { char *p; if ( !GetModuleFileName ( NULL, dir, MAX_PATH) ) { log_debug ("GetModuleFileName failed: %s\n", w32_strerror (0)); *dir = 0; } got_dir = 1; p = strrchr (dir, DIRSEP_C); if (p) *p = 0; else { log_debug ("bad filename `%s' returned for this process\n", dir); *dir = 0; } } if (*dir) return dir; /* Fallback to the hardwired value. */ #endif /*HAVE_W32_SYSTEM*/ return GNUPG_LIBEXECDIR; } const char * gnupg_libdir (void) { #ifdef HAVE_W32_SYSTEM #warning get the libdir from somewhere else return GNUPG_LIBDIR; #else /*!HAVE_W32_SYSTEM*/ return GNUPG_LIBDIR; #endif /*!HAVE_W32_SYSTEM*/ } const char * gnupg_datadir (void) { #ifdef HAVE_W32_SYSTEM #warning get the datadir from somewhere else return GNUPG_DATADIR; #else /*!HAVE_W32_SYSTEM*/ return GNUPG_DATADIR; #endif /*!HAVE_W32_SYSTEM*/ } /* Return the file name of a helper tool. WHICH is one of the GNUPG_MODULE_NAME_foo constants. */ const char * gnupg_module_name (int which) { const char *s, *s2; #define X(a,b) do { \ static char *name; \ if (!name) \ { \ s = gnupg_ ## a (); \ s2 = DIRSEP_S b EXEEXT_S; \ name = xmalloc (strlen (s) + strlen (s2) + 1); \ strcpy (stpcpy (name, s), s2); \ } \ return name; \ } while (0) switch (which) { case GNUPG_MODULE_NAME_AGENT: #ifdef GNUPG_DEFAULT_AGENT return GNUPG_DEFAULT_AGENT; #else X(bindir, "gpg-agent"); #endif case GNUPG_MODULE_NAME_PINENTRY: #ifdef GNUPG_DEFAULT_PINENTRY return GNUPG_DEFAULT_PINENTRY; #else X(bindir, "pinentry"); #endif case GNUPG_MODULE_NAME_SCDAEMON: #ifdef GNUPG_DEFAULT_SCDAEMON return GNUPG_DEFAULT_SCDAEMON; #else X(bindir, "scdaemon"); #endif case GNUPG_MODULE_NAME_DIRMNGR: #ifdef GNUPG_DEFAULT_DIRMNGR return GNUPG_DEFAULT_DIRMNGR; #else X(bindir, "dirmngr"); #endif case GNUPG_MODULE_NAME_PROTECT_TOOL: #ifdef GNUPG_DEFAULT_PROTECT_TOOL return GNUPG_DEFAULT_PROTECT_TOOL; #else X(libexecdir, "gpg-protect-tool"); #endif default: BUG (); } #undef X }