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/* w32-util.c - Utility functions for the W32 API |
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* Copyright (C) 1999 Free Software Foundation, Inc |
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* Copyright (C) 2001 Werner Koch (dd9jn) |
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* Copyright (C) 2002, 2005 Timo Schulz |
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* |
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* This file is part of MyGPGME. |
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* |
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* MyGPGME is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* MyGPGME is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA |
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*/ |
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|
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <assert.h> |
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#include <errno.h> |
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#include <sys/types.h> |
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#include <windows.h> |
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#include <process.h> |
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#include <io.h> |
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|
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#include "util.h" |
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|
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|
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static char * |
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expand_path (const char *path) |
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{ |
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DWORD len; |
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char *p; |
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|
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len = ExpandEnvironmentStrings (path, NULL, 0); |
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if (!len) |
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return NULL; |
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len += 1; |
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p = calloc (1, len+1); |
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if (!p) |
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return NULL; |
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len = ExpandEnvironmentStrings (path, p, len); |
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if (!len) { |
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free (p); |
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return NULL; |
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} |
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return p; |
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} |
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|
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/**************** |
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* Return a string from the Win32 Registry or NULL in case of |
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* error. Caller must release the return value. A NULL for root |
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* is an alias fro HKEY_CURRENT_USER |
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*/ |
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static char * |
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read_w32_registry_string ( const char *root, |
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const char *dir, const char *name ) |
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{ |
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HKEY root_key, key_handle; |
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DWORD n1, nbytes; |
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DWORD type; |
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char *result = NULL; |
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|
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if( !root ) |
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root_key = HKEY_CURRENT_USER; |
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else if( !strcmp( root, "HKEY_CLASSES_ROOT" ) ) |
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root_key = HKEY_CLASSES_ROOT; |
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else if( !strcmp( root, "HKEY_CURRENT_USER" ) ) |
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root_key = HKEY_CURRENT_USER; |
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else if( !strcmp( root, "HKEY_LOCAL_MACHINE" ) ) |
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root_key = HKEY_LOCAL_MACHINE; |
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else if( !strcmp( root, "HKEY_USERS" ) ) |
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root_key = HKEY_USERS; |
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else if( !strcmp( root, "HKEY_PERFORMANCE_DATA" ) ) |
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root_key = HKEY_PERFORMANCE_DATA; |
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else if( !strcmp( root, "HKEY_CURRENT_CONFIG" ) ) |
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root_key = HKEY_CURRENT_CONFIG; |
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else |
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return NULL; |
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|
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if( RegOpenKeyEx( root_key, dir, 0, KEY_READ, &key_handle ) ) |
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return NULL; /* no need for a RegClose, so return direct */ |
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|
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nbytes = 1; |
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if( RegQueryValueEx (key_handle, name, 0, NULL, NULL, &nbytes)) |
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goto leave; |
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result = calloc (1, (n1=nbytes+1)); |
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if (!result) |
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goto leave; |
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if (RegQueryValueEx (key_handle, name, 0, &type, result, &n1)) { |
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safe_free (result); result = NULL; |
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goto leave; |
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} |
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if (type == REG_EXPAND_SZ && strchr (result, '%')) { |
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char *p = expand_path (result); |
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DEBUG2 ("gpgProgram is expandable: %s -> %s\n", result, p); |
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free (result); |
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result = p; |
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} |
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|
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leave: |
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RegCloseKey (key_handle); |
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return result; |
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} |
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|
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|
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const char * |
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_gpgme_get_gpg_path (int cleanup) |
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{ |
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static char *gpg_program = NULL; |
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|
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if (cleanup) { |
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if (gpg_program) { |
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free (gpg_program); |
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gpg_program = NULL; |
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} |
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return NULL; |
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} |
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|
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if (!gpg_program) { |
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gpg_program = read_w32_registry_string (NULL, |
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"Software\\GNU\\GnuPG", "gpgProgram"); |
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if (gpg_program) { |
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int i; |
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|
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DEBUG1 ("found gpgProgram in registry: `%s'\n", gpg_program ); |
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for (i=0; gpg_program[i]; i++) { |
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if (gpg_program[i] == '/') |
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gpg_program[i] = '\\'; |
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} |
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} |
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else |
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gpg_program = strdup ("C:\\GNUPG\\GPG.EXE"); |
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} |
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|
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return gpg_program; |
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} |
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|
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|
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const char * |
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_gpgme_get_gpg_optfile (int cleanup) |
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{ |
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static char *gpg_optfile = NULL; |
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|
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if (cleanup) { |
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if (gpg_optfile) { |
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free (gpg_optfile); |
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gpg_optfile = NULL; |
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} |
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return NULL; |
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} |
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|
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if (!gpg_optfile) { |
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FILE *fp; |
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gpg_optfile = read_w32_registry_string( |
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NULL, "Software\\GNU\\GnuPG", "OptFile" ); |
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if (gpg_optfile) { |
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int i; |
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for (i = 0; gpg_optfile[i]; i++) { |
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if (gpg_optfile[i] == '/') |
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gpg_optfile[i] = '\\'; |
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} |
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if (!strcmp(gpg_optfile, "")) |
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return NULL; /* Then ignore the file */ |
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fp = fopen (gpg_optfile, "r"); |
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if (fp == NULL) |
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return NULL; |
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fclose (fp); |
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} |
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} |
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|
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return gpg_optfile; |
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} /* _gpgme_get_gpg_optfile */ |
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|
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|
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void |
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util_cleanup (void) |
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{ |
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_gpgme_get_gpg_optfile (1); |
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_gpgme_get_gpg_path (1); |
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} |
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