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/* wptGPGME.cpp - WinPT GPGME interface |
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* Copyright (C) 2001-2005 Timo Schulz |
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* |
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* This file is part of WinPT. |
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* |
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* WinPT is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License |
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* as published by the Free Software Foundation; either version 2 |
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* of the License, or (at your option) any later version. |
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* |
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* WinPT 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 GNU |
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* 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 WinPT; if not, write to the Free Software Foundation, |
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* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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|
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#ifdef HAVE_CONFIG_H |
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#include <config.h> |
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#endif |
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|
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#include <sys/types.h> |
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#include <sys/types.h> |
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#include <windows.h> |
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|
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#include "resource.h" |
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#include "wptNLS.h" |
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#include "wptGPG.h" |
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#include "wptErrors.h" |
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#include "wptTypes.h" |
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#include "wptW32API.h" |
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#include "wptVersion.h" |
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#include "wptCommonCtl.h" |
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#include "wptContext.h" |
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#include "wptRegistry.h" |
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#include "wptDlgs.h" |
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|
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#include "openpgp.h" |
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|
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BOOL CALLBACK keycache_dlg_proc (HWND dlg, UINT msg, WPARAM wparam, LPARAM lparam); |
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void progress_cleanup (progress_filter_s * pfx); |
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|
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static gpg_keycache_t pub = NULL; |
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static gpg_keycache_t sec = NULL; |
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static unsigned int reload = 0; |
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static char *gpg_secring = NULL; |
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|
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|
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/* Reload the key cache. */ |
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void |
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keycache_reload (HWND dlg) |
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{ |
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refresh_cache_s rcs; |
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|
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memset (&rcs, 0, sizeof rcs); |
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rcs.kr_reload = rcs.kr_update = 1; |
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rcs.tr_update = 0; |
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DialogBoxParam (glob_hinst, (LPCSTR)IDD_WINPT_KEYCACHE, dlg, |
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keycache_dlg_proc, (LPARAM)&rcs); |
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} |
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|
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|
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/* Release both key cache objects. If @cleanup is 1, |
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also release other global structs. */ |
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void |
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keycache_release (int cleanup) |
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{ |
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int n = gpg_keycache_get_size (pub); |
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char tmpbuf[64]; |
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|
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/* XXX: update the value when the cache has changed. */ |
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sprintf (tmpbuf, "%d", n); |
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set_reg_key (HKEY_CURRENT_USER, "Software\\WinPT", "nKeys", tmpbuf); |
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|
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if (pub) { |
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gpg_keycache_release (pub); |
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pub = NULL; |
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} |
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if (sec) { |
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gpg_keycache_release (sec); |
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sec = NULL; |
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} |
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if (cleanup) { |
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if (gpg_secring) |
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free (gpg_secring); |
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gpg_secring = NULL; |
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} |
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} |
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|
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|
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/* Update the key with the keyid @keyid in the key cache. |
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If @is_sec is 1, the secret key cache is used. */ |
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gpgme_error_t |
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keycache_update (int is_sec, const char *keyid) |
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{ |
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gpg_keycache_t ctx = pub; |
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gpgme_error_t err; |
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|
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if (is_sec) |
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ctx = sec; |
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err = gpg_keycache_update_key (ctx, is_sec, pub, keyid); |
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if (is_sec) |
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gpg_keycache_prepare_single (ctx, keyid, NULL, gpg_secring); |
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return err; |
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} |
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|
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/* XXX: cache_keyring_names must be called then the GPG homedir changes! */ |
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|
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/* Initialize both cache contexts. Use @pubring for the public |
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keyring and @secring for the secret keyring. */ |
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gpgme_error_t |
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keycache_init (const char *pubring, const char *secring) |
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{ |
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struct progress_filter_s pfx; |
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gpgme_error_t err; |
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int val = 0; |
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char *p; |
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|
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if (secring != NULL) { |
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free_if_alloc (gpg_secring); |
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gpg_secring = get_gnupg_keyring (0, NO_STRICT); |
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} |
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|
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if (reload) { |
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keycache_release (0); |
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reload = 0; |
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} |
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p = get_reg_entry (HKEY_CURRENT_USER, "Software\\WinPT", "nKeys"); |
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if (p && *p != ' ') { |
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val = atoi (p); |
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free_if_alloc (p); |
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memset (&pfx, 0, sizeof (pfx)); |
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} |
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|
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err = gpg_keycache_new (&pub); |
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if (err) |
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return err; |
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if (val != 0) |
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gpg_keycache_set_cb (pub, progress_callback, &pfx, val); |
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err = gpg_keycache_new (&sec); |
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if (!err) |
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err = gpg_keycache_init (pub, NULL, 0); |
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if (!err) |
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err = gpg_keycache_init( sec, NULL, 1 ); |
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if( !err && pubring && *pubring ) |
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err = gpg_keycache_prepare( pub, pubring, NULL ); |
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if( !err && secring && * secring ) |
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err = gpg_keycache_prepare( sec, NULL, secring ); |
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if (!err) |
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gpg_keycache_sync (pub, sec); |
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if (val != 0) |
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progress_cleanup (&pfx); |
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return err; |
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} |
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|
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|
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/* If @val = 1 indicate to reload the cache. */ |
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void |
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keycache_set_reload (int val) |
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{ |
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reload = val; |
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} |
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|
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|
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/* Return the reload cache flag. */ |
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int |
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keycache_get_reload (void) |
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{ |
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return reload; |
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} |
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|
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|
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/* Return the public cache context if @is_pub is set |
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the secre cache context otherwise. */ |
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gpg_keycache_t |
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keycache_get_ctx (int is_pub) |
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{ |
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return is_pub? pub : sec; |
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} |
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|
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|
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/* Get the GPG key with keyid @keyid from the cache. Return it |
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in @r_key on success. */ |
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static int |
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get_key_from_cache (const char *keyid, gpgme_key_t *r_key, |
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struct keycache_s **c, int secret) |
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{ |
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gpg_keycache_t cache; |
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gpgme_error_t err; |
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int mode = secret? KEYCACHE_PRV : KEYCACHE_PUB; |
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|
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if (!keyid) |
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return WPTERR_GENERAL; |
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if (r_key) |
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*r_key = NULL; |
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cache = keycache_get_ctx (mode); |
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if (!cache) |
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BUG( NULL ); |
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if (!c) |
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err = gpg_keycache_find_key (cache, keyid, 0, r_key); |
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else |
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err = gpg_keycache_find_key2 (cache, keyid, 0, r_key, c); |
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return err? WPTERR_GENERAL : 0; |
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} |
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|
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|
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/* Get GPG key with keyid @keyid directly from GPG and return |
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it in @r_key on success. */ |
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static int |
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get_key_directly (const char *keyid, gpgme_key_t *r_key, int secret) |
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{ |
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gpgme_ctx_t ctx; |
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gpgme_error_t err; |
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|
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err = gpgme_new (&ctx); |
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if (err) |
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return WPTERR_GENERAL; |
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err = gpgme_get_key (ctx, keyid, r_key, secret); |
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gpgme_release (ctx); |
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return err? WPTERR_GENERAL : 0; |
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} |
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|
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|
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/* Search the public key with @keyid as the keyid in the cache and |
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return the item in @k. */ |
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int |
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winpt_get_pubkey (const char *keyid, winpt_key_s *k) |
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{ |
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int rc; |
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|
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rc = get_key_from_cache (keyid, &k->ctx, &k->ext, 0); |
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if (rc) |
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return rc; |
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k->is_v3 = k->ctx->subkeys->pubkey_algo == GPGME_PK_RSA && |
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strlen (k->ctx->subkeys->fpr) == 32; |
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k->is_protected = k->ext->gloflags.is_protected; |
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k->keyid = k->ctx->subkeys->keyid; |
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k->uid = k->ctx->uids->uid; |
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return rc; |
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} |
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|
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|
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int |
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winpt_get_seckey (const char *keyid, winpt_key_s *k) |
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{ |
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int rc; |
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rc = get_key_from_cache (keyid, &k->ctx, &k->ext, 1); |
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if (rc) |
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return rc; |
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k->is_v3 = k->ctx->subkeys->pubkey_algo == GPGME_PK_RSA && |
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strlen (k->ctx->subkeys->fpr) == 32; |
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k->is_protected = k->ext->gloflags.is_protected; |
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k->keyid = k->ctx->subkeys->keyid; |
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k->uid = k->ctx->uids->uid; |
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return rc; |
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} |
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|
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|
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int |
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get_pubkey (const char *keyid, gpgme_key_t *ret_key) |
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{ |
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int rc; |
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|
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if (pub && sec) |
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rc = get_key_from_cache (keyid, ret_key, NULL, 0); |
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else |
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rc = get_key_directly (keyid, ret_key, 0); |
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return rc; |
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} |
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|
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|
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int |
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get_seckey (const char *keyid, gpgme_key_t *ret_skey) |
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{ |
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int rc; |
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|
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if (pub && sec) |
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rc = get_key_from_cache (keyid, ret_skey, NULL, 1); |
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else |
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rc = get_key_directly (keyid, ret_skey, 1); |
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return rc; |
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} |
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|
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|
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/* Search for insecure ElGamal keys and return the |
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number of founded keys. */ |
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int |
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count_insecure_elgkeys (void) |
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{ |
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gpg_keycache_t pc; |
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gpgme_key_t key; |
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int n=0; |
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|
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pc = keycache_get_ctx (1); |
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if (!pc) |
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BUG (0); |
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while (!gpg_keycache_next_key (pc, 0, &key)) { |
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if (key->subkeys->pubkey_algo == GPGME_PK_ELG) |
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n++; |
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} |
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gpg_keycache_rewind (pc); |
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return n; |
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} |
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