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/* wptGPGME.cpp - WinPT GPGME interface |
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* Copyright (C) 2001-2006 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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#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 <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, |
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LPARAM lparam); |
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void progress_cleanup (progress_filter_s * pfx); |
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|
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/* Global GPG key cache contexts. */ |
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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 char *gpg_secring = NULL; |
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|
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struct keycache_s *key_list = NULL; |
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|
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|
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/* Return 1 if no cache is available. |
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This can be the case if WinPT were run in command line mode. */ |
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int |
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keycache_not_available (void) |
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{ |
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return pub == NULL; |
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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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char tmpbuf[64]; |
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int n = gpg_keycache_get_size (pub); |
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|
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/* XXX: update the value when the cache has changed. */ |
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_snprintf (tmpbuf, DIM (tmpbuf)-1, "%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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safe_free (gpg_secring); |
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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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|
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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; |
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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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log_debug ("keycache_init: secring path '%s'\r\n", gpg_secring); |
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} |
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|
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val = 0; |
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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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} |
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|
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memset (&pfx, 0, sizeof (pfx)); |
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keycache_release (0); /* Release old contexts first. */ |
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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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|
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return err; |
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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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gpg_keycache_t ctx; |
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|
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ctx = is_pub? pub : sec; |
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if (!ctx) |
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BUG (0); |
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return ctx; |
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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 gpgme_error_t |
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get_key_from_cache (const char *keyid, int secret, gpgme_key_t *r_key, |
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struct keycache_s **c) |
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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 gpg_error (GPG_ERR_INV_VALUE); |
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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 (!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; |
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} |
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|
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|
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/* Release the internal key structure. |
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If allocated is 0, assume fixed cache item. */ |
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void |
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winpt_release_pubkey (winpt_key_s *k) |
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{ |
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/*log_box ("debug", 0, "alloc %d", k->allocated);*/ |
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if (!k->allocated) |
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return; |
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gpg_keycache_item_release (k->ext); |
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k->ext = NULL; |
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k->allocated = 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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gpgme_error_t |
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winpt_get_pubkey (const char *keyid, winpt_key_s *k) |
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{ |
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gpgme_error_t err = gpg_error (GPG_ERR_NO_ERROR); |
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|
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if (pub) |
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err = get_key_from_cache (keyid, 0, &k->ctx, &k->ext); |
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else |
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err = gpg_keycache_fetch_key (keyid, 0, &k->ctx, &k->ext); |
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if (err) |
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return err; |
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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+8; |
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k->uid = k->ext->uids->uid; |
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k->allocated = pub? 0 : 1; |
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return 0; |
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} |
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|
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|
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gpgme_error_t |
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winpt_get_seckey (const char *keyid, winpt_key_s *k) |
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{ |
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gpgme_error_t err; |
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|
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if (sec) |
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err = get_key_from_cache (keyid, 1, &k->ctx, &k->ext); |
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else |
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err = gpg_keycache_fetch_key (keyid, 1, &k->ctx, &k->ext); |
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if (err) |
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return err; |
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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+8; |
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k->uid = k->ext->uids->uid; |
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k->allocated = sec? 0 : 1; |
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return 0; |
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} |
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|
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|
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gpgme_error_t |
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get_pubkey (const char *keyid, gpgme_key_t *ret_key) |
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{ |
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return get_key_from_cache (keyid, 0, ret_key, NULL); |
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} |
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|
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|
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gpgme_error_t |
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get_seckey (const char *keyid, gpgme_key_t *ret_skey) |
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{ |
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return get_key_from_cache (keyid, 1, ret_skey, NULL); |
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} |
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|
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|
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/* Map the signature summary in @sum to signature status table index. |
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Return value: index to table. */ |
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static int |
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sigsum_to_index (gpgme_sigsum_t sum) |
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{ |
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if (sum & GPGME_SIGSUM_RED) |
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return 2; |
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else if (sum & GPGME_SIGSUM_SIG_EXPIRED) |
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return 8; |
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else if (sum & GPGME_SIGSUM_KEY_REVOKED) |
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return 7; |
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else if (sum & GPGME_SIGSUM_KEY_EXPIRED) |
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return 6; |
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else if (sum & GPGME_SIGSUM_GREEN) |
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return 1; |
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else if (sum & GPGME_SIGSUM_KEY_MISSING) |
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return 3; |
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return 0; |
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} |
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|
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|
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/* Return a humand readable description for the signature status @sum. |
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Warning: this function does not consider the validity of the key. */ |
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const char* |
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get_gpg_sigstat (gpgme_sigsum_t sum) |
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{ |
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const char *gpg_sigstat[] = { |
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_("Error during verification process"), |
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_("The signature is good"), |
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_("The signature is BAD!"), |
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_("The signature could not be checked due to a missing key"), |
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_("No valid OpenPGP signature"), |
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_("Signature Error"), |
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_("Good signature (Expired Key)"), |
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_("Good signature (Revoked Key)"), |
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_("Good signature (Expired)"), |
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NULL |
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}; |
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const unsigned int mask = 9; |
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|
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return gpg_sigstat[sigsum_to_index (sum) % mask]; |
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} |
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|
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|
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/* Return true if at least one secret key is available. */ |
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bool |
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secret_key_available (void) |
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{ |
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if (!sec || gpg_keycache_get_size (sec) == 0) |
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return false; |
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return true; |
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} |
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