2 * Claws Mail -- a GTK+ based, lightweight, and fast e-mail client
3 * Copyright (C) 1999-2007 the Claws Mail team
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 3 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
30 #include <glib/gi18n.h>
35 #include <sys/types.h>
37 # include <sys/wait.h>
39 #if (defined(__DragonFly__) || defined(SOLARIS) || defined (__NetBSD__) || defined (__FreeBSD__) || defined (__OpenBSD__))
40 # include <sys/signal.h>
51 #include "prefs_common.h"
53 #include "alertpanel.h"
54 #include "passphrase.h"
55 #include "prefs_gpg.h"
57 #include "select-keys.h"
59 static void sgpgme_disable_all(void)
61 /* FIXME: set a flag, so that we don't bother the user with failed
65 gpgme_verify_result_t sgpgme_verify_signature(gpgme_ctx_t ctx, gpgme_data_t sig,
66 gpgme_data_t plain, gpgme_data_t dummy)
68 gpgme_verify_result_t status = NULL;
71 if ((err = gpgme_op_verify(ctx, sig, plain, dummy)) != GPG_ERR_NO_ERROR) {
72 debug_print("op_verify err %s\n", gpgme_strerror(err));
73 privacy_set_error("%s", gpgme_strerror(err));
74 return GINT_TO_POINTER(-GPG_ERR_SYSTEM_ERROR);
77 status = gpgme_op_verify_result(ctx);
78 if (status && status->signatures == NULL) {
79 debug_print("no signature found\n");
80 privacy_set_error(_("No signature found"));
81 return GINT_TO_POINTER(-GPG_ERR_SYSTEM_ERROR);
86 SignatureStatus sgpgme_sigstat_gpgme_to_privacy(gpgme_ctx_t ctx, gpgme_verify_result_t status)
88 unsigned long validity = 0;
89 gpgme_signature_t sig = NULL;
91 if (GPOINTER_TO_INT(status) == -GPG_ERR_SYSTEM_ERROR) {
92 debug_print("system error\n");
93 return SIGNATURE_CHECK_FAILED;
97 debug_print("status == NULL\n");
98 return SIGNATURE_UNCHECKED;
100 sig = status->signatures;
103 debug_print("sig == NULL\n");
104 return SIGNATURE_UNCHECKED;
106 validity = sig->validity;
108 debug_print("err code %d\n", gpg_err_code(sig->status));
109 switch (gpg_err_code(sig->status)) {
110 case GPG_ERR_NO_ERROR:
111 switch (gpg_err_code(sig->validity)) {
112 case GPGME_VALIDITY_NEVER:
113 return SIGNATURE_INVALID;
114 case GPGME_VALIDITY_UNKNOWN:
115 case GPGME_VALIDITY_UNDEFINED:
116 case GPGME_VALIDITY_MARGINAL:
117 case GPGME_VALIDITY_FULL:
118 case GPGME_VALIDITY_ULTIMATE:
121 return SIGNATURE_CHECK_FAILED;
123 case GPG_ERR_SIG_EXPIRED:
124 case GPG_ERR_CERT_REVOKED:
125 return SIGNATURE_WARN;
126 case GPG_ERR_KEY_EXPIRED:
127 return SIGNATURE_KEY_EXPIRED;
128 case GPG_ERR_BAD_SIGNATURE:
129 return SIGNATURE_INVALID;
130 case GPG_ERR_NO_PUBKEY:
131 return SIGNATURE_CHECK_FAILED;
133 return SIGNATURE_CHECK_FAILED;
135 return SIGNATURE_CHECK_FAILED;
138 static const gchar *get_validity_str(unsigned long validity)
140 switch (gpg_err_code(validity)) {
141 case GPGME_VALIDITY_UNKNOWN:
143 case GPGME_VALIDITY_UNDEFINED:
144 return _("Undefined");
145 case GPGME_VALIDITY_NEVER:
147 case GPGME_VALIDITY_MARGINAL:
148 return _("Marginal");
149 case GPGME_VALIDITY_FULL:
151 case GPGME_VALIDITY_ULTIMATE:
152 return _("Ultimate");
158 static gchar *extract_name(const char *uid)
162 if (!strncmp(uid, "CN=", 3)) {
163 gchar *result = g_strdup(uid+3);
164 if (strstr(result, ","))
165 *(strstr(result, ",")) = '\0';
167 } else if (strstr(uid, ",CN=")) {
168 gchar *result = g_strdup(strstr(uid, ",CN=")+4);
169 if (strstr(result, ","))
170 *(strstr(result, ",")) = '\0';
173 return g_strdup(uid);
176 gchar *sgpgme_sigstat_info_short(gpgme_ctx_t ctx, gpgme_verify_result_t status)
178 gpgme_signature_t sig = NULL;
181 gchar *result = NULL;
182 gpgme_error_t err = 0;
183 static gboolean warned = FALSE;
185 if (GPOINTER_TO_INT(status) == -GPG_ERR_SYSTEM_ERROR) {
186 return g_strdup_printf(_("The signature can't be checked - %s"), privacy_get_error());
189 if (status == NULL) {
190 return g_strdup(_("The signature has not been checked."));
192 sig = status->signatures;
194 return g_strdup(_("The signature has not been checked."));
197 err = gpgme_get_key(ctx, sig->fpr, &key, 0);
198 if (gpg_err_code(err) == GPG_ERR_NO_AGENT) {
200 alertpanel_error(_("PGP Core: Can't get key - no gpg-agent running."));
202 g_warning(_("PGP Core: Can't get key - no gpg-agent running."));
206 uname = extract_name(key->uids->uid);
208 uname = g_strdup("<?>");
209 switch (gpg_err_code(sig->status)) {
210 case GPG_ERR_NO_ERROR:
211 switch (gpg_err_code(sig->validity)) {
212 case GPGME_VALIDITY_MARGINAL:
213 case GPGME_VALIDITY_FULL:
214 case GPGME_VALIDITY_ULTIMATE:
215 result = g_strdup_printf(_("Good signature from %s."), uname);
217 case GPGME_VALIDITY_UNKNOWN:
218 case GPGME_VALIDITY_UNDEFINED:
219 case GPGME_VALIDITY_NEVER:
221 result = g_strdup_printf(_("Good signature (untrusted) from %s."), uname);
225 case GPG_ERR_SIG_EXPIRED:
226 result = g_strdup_printf(_("Expired signature from %s."), uname);
228 case GPG_ERR_KEY_EXPIRED:
229 result = g_strdup_printf(_("Expired key from %s."), uname);
231 case GPG_ERR_BAD_SIGNATURE:
232 result = g_strdup_printf(_("Bad signature from %s."), uname);
234 case GPG_ERR_NO_PUBKEY: {
235 gchar *id = g_strdup(sig->fpr + strlen(sig->fpr)-8);
236 result = g_strdup_printf(_("Key 0x%s not available to verify this signature."), id);
241 result = g_strdup(_("The signature has not been checked."));
245 result = g_strdup(_("Error"));
250 gchar *sgpgme_sigstat_info_full(gpgme_ctx_t ctx, gpgme_verify_result_t status)
255 gpgme_signature_t sig = status->signatures;
257 siginfo = g_string_sized_new(64);
259 gpgme_user_id_t user = NULL;
262 const gchar *keytype, *keyid, *uid;
264 err = gpgme_get_key(ctx, sig->fpr, &key, 0);
266 if (err != GPG_ERR_NO_ERROR) {
268 g_string_append_printf(siginfo,
269 _("Error checking signature: %s\n"),
270 gpgme_strerror(err));
275 keytype = gpgme_pubkey_algo_name(
276 key->subkeys->pubkey_algo);
277 keyid = key->subkeys->keyid;
284 g_string_append_printf(siginfo,
285 _("Signature made using %s key ID %s\n"),
288 switch (gpg_err_code(sig->status)) {
289 case GPG_ERR_NO_ERROR:
290 case GPG_ERR_KEY_EXPIRED:
291 g_string_append_printf(siginfo,
292 _("Good signature from \"%s\" (Trust: %s)\n"),
293 uid, get_validity_str(sig->validity));
295 case GPG_ERR_SIG_EXPIRED:
296 g_string_append_printf(siginfo,
297 _("Expired signature from \"%s\"\n"),
300 case GPG_ERR_BAD_SIGNATURE:
301 g_string_append_printf(siginfo,
302 _("BAD signature from \"%s\"\n"),
308 if (sig->status != GPG_ERR_BAD_SIGNATURE) {
310 user = user ? user->next : NULL;
311 while (user != NULL) {
312 g_string_append_printf(siginfo,
318 g_string_append_printf(siginfo,
319 _("Primary key fingerprint: %s\n"),
320 sig ? sig->fpr: "?");
321 #ifdef HAVE_GPGME_PKA_TRUST
322 if (sig->pka_trust == 1 && sig->pka_address) {
323 g_string_append_printf(siginfo,
324 _("WARNING: Signer's address \"%s\" "
325 "does not match DNS entry\n"),
328 else if (sig->pka_trust == 2 && sig->pka_address) {
329 g_string_append_printf(siginfo,
330 _("Verified signer's address is \"%s\"\n"),
332 /* FIXME: Compare the address to the
335 #endif /*HAVE_GPGME_PKA_TRUST*/
338 g_string_append(siginfo, "\n");
344 g_string_free(siginfo, FALSE);
348 gpgme_data_t sgpgme_data_from_mimeinfo(MimeInfo *mimeinfo)
350 gpgme_data_t data = NULL;
352 FILE *fp = g_fopen(mimeinfo->data.filename, "rb");
353 gchar *tmp_file = NULL;
358 tmp_file = get_tmp_file();
359 copy_file_part(fp, mimeinfo->offset, mimeinfo->length, tmp_file);
362 debug_print("tmp file %s\n", tmp_file);
364 err = gpgme_data_new_from_file(&data, tmp_file, 1);
365 claws_unlink(tmp_file);
368 debug_print("data %p (%d %d)\n", (void *)&data, mimeinfo->offset, mimeinfo->length);
370 debug_print ("gpgme_data_new_from_file failed: %s\n",
371 gpgme_strerror (err));
372 privacy_set_error(_("Couldn't get data from message, %s"), gpgme_strerror(err));
378 gpgme_data_t sgpgme_decrypt_verify(gpgme_data_t cipher, gpgme_verify_result_t *status, gpgme_ctx_t ctx)
380 struct passphrase_cb_info_s info;
384 memset (&info, 0, sizeof info);
386 if ((err = gpgme_data_new(&plain)) != GPG_ERR_NO_ERROR) {
388 privacy_set_error(_("Couldn't initialize data, %s"), gpgme_strerror(err));
392 if (gpgme_get_protocol(ctx) == GPGME_PROTOCOL_OpenPGP) {
393 prefs_gpg_enable_agent(prefs_gpg_get_config()->use_gpg_agent);
394 if (!getenv("GPG_AGENT_INFO") || !prefs_gpg_get_config()->use_gpg_agent) {
396 gpgme_set_passphrase_cb (ctx, gpgmegtk_passphrase_cb, &info);
399 prefs_gpg_enable_agent(TRUE);
401 gpgme_set_passphrase_cb (ctx, NULL, &info);
405 if (gpgme_get_protocol(ctx) == GPGME_PROTOCOL_OpenPGP) {
406 err = gpgme_op_decrypt_verify(ctx, cipher, plain);
407 if (err != GPG_ERR_NO_ERROR) {
408 debug_print("can't decrypt (%s)\n", gpgme_strerror(err));
409 privacy_set_error("%s", gpgme_strerror(err));
410 gpgmegtk_free_passphrase();
411 gpgme_data_release(plain);
415 err = gpgme_data_rewind(plain);
417 debug_print("can't seek (%d %d %s)\n", err, errno, strerror(errno));
420 debug_print("decrypted.\n");
421 *status = gpgme_op_verify_result (ctx);
423 err = gpgme_op_decrypt(ctx, cipher, plain);
424 if (err != GPG_ERR_NO_ERROR) {
425 debug_print("can't decrypt (%s)\n", gpgme_strerror(err));
426 privacy_set_error("%s", gpgme_strerror(err));
427 gpgmegtk_free_passphrase();
428 gpgme_data_release(plain);
432 err = gpgme_data_rewind(plain);
434 debug_print("can't seek (%d %d %s)\n", err, errno, strerror(errno));
437 debug_print("decrypted.\n");
438 *status = gpgme_op_verify_result (ctx);
443 gchar *sgpgme_get_encrypt_data(GSList *recp_names, gpgme_protocol_t proto)
445 SelectionResult result = KEY_SELECTION_CANCEL;
446 gpgme_key_t *keys = gpgmegtk_recipient_selection(recp_names, &result,
452 if (result == KEY_SELECTION_DONT)
453 return g_strdup("_DONT_ENCRYPT_");
458 gpgme_subkey_t skey = keys[i]->subkeys;
459 gchar *fpr = skey->fpr;
461 debug_print("adding %s\n", fpr);
462 tmp = g_strconcat(ret?ret:"", fpr, " ", NULL);
470 gboolean sgpgme_setup_signers(gpgme_ctx_t ctx, PrefsAccount *account)
472 GPGAccountConfig *config;
474 gpgme_signers_clear(ctx);
476 config = prefs_gpg_account_get_config(account);
478 switch(config->sign_key) {
479 case SIGN_KEY_DEFAULT:
480 debug_print("using default gnupg key\n");
482 case SIGN_KEY_BY_FROM:
483 debug_print("using key for %s\n", account->address);
485 case SIGN_KEY_CUSTOM:
486 debug_print("using key for %s\n", config->sign_key_id);
490 if (config->sign_key != SIGN_KEY_DEFAULT) {
492 gpgme_key_t key, key2;
495 if (config->sign_key == SIGN_KEY_BY_FROM)
496 keyid = account->address;
497 else if (config->sign_key == SIGN_KEY_CUSTOM)
498 keyid = config->sign_key_id;
502 err = gpgme_op_keylist_start(ctx, keyid, 1);
504 err = gpgme_op_keylist_next(ctx, &key);
506 g_warning("setup_signers start: %s", gpgme_strerror(err));
507 privacy_set_error(_("Secret key not found (%s)"), gpgme_strerror(err));
511 err = gpgme_op_keylist_next(ctx, &key2);
513 g_warning("ambiguous specification of secret key '%s'\n",
515 privacy_set_error(_("Secret key specification is ambiguous"));
519 gpgme_op_keylist_end(ctx);
520 err = gpgme_signers_add(ctx, key);
521 gpgme_key_release(key);
524 g_warning("error adding secret key: %s\n", gpgme_strerror(err));
525 privacy_set_error(_("Error setting secret key: %s"), gpgme_strerror(err));
530 prefs_gpg_account_free_config(config);
534 prefs_gpg_account_free_config(config);
540 gpgme_engine_info_t engineInfo;
541 if (gpgme_check_version("1.0.0")) {
543 gpgme_set_locale(NULL, LC_CTYPE, setlocale(LC_CTYPE, NULL));
546 gpgme_set_locale(NULL, LC_MESSAGES, setlocale(LC_MESSAGES, NULL));
548 if (!gpgme_get_engine_info(&engineInfo)) {
551 debug_print("GpgME Protocol: %s\n"
552 "Version: %s (req %s)\n"
554 gpgme_get_protocol_name(engineInfo->protocol) ? gpgme_get_protocol_name(engineInfo->protocol):"???",
555 engineInfo->version ? engineInfo->version:"???",
556 engineInfo->req_version ? engineInfo->req_version:"???",
557 engineInfo->file_name ? engineInfo->file_name:"???");
559 if (engineInfo->protocol == GPGME_PROTOCOL_OpenPGP
560 && gpgme_engine_check_version(engineInfo->protocol) !=
562 if (engineInfo->file_name && !engineInfo->version) {
563 alertpanel_error(_("Gpgme protocol '%s' is unusable: "
564 "Engine '%s' isn't installed properly."),
565 gpgme_get_protocol_name(engineInfo->protocol),
566 engineInfo->file_name);
567 } else if (engineInfo->file_name && engineInfo->version
568 && engineInfo->req_version) {
569 alertpanel_error(_("Gpgme protocol '%s' is unusable: "
570 "Engine '%s' version %s is installed, "
571 "but version %s is required.\n"),
572 gpgme_get_protocol_name(engineInfo->protocol),
573 engineInfo->file_name,
575 engineInfo->req_version);
577 alertpanel_error(_("Gpgme protocol '%s' is unusable "
578 "(unknown problem)"),
579 gpgme_get_protocol_name(engineInfo->protocol));
582 engineInfo = engineInfo->next;
586 sgpgme_disable_all();
588 if (prefs_gpg_get_config()->gpg_warning) {
591 val = alertpanel_full
593 _("GnuPG is not installed properly, or needs "
595 "OpenPGP support disabled."),
596 GTK_STOCK_CLOSE, NULL, NULL, TRUE, NULL,
597 ALERT_WARNING, G_ALERTDEFAULT);
598 if (val & G_ALERTDISABLE)
599 prefs_gpg_get_config()->gpg_warning = FALSE;
606 gpgmegtk_free_passphrase();
609 void sgpgme_create_secret_key(PrefsAccount *account, gboolean ask_create)
611 AlertValue val = G_ALERTDEFAULT;
612 gchar *key_parms = NULL;
615 gchar *passphrase = NULL, *passphrase_second = NULL;
618 gpgme_error_t err = 0;
620 GtkWidget *window = NULL;
621 gpgme_genkey_result_t key;
624 account = account_get_default();
626 if (account->address == NULL) {
627 alertpanel_error(_("You have to save the account's information with \"OK\" "
628 "before being able to generate a key pair.\n"));
632 val = alertpanel(_("No PGP key found"),
633 _("Claws Mail did not find a secret PGP key, "
634 "which means that you won't be able to sign "
635 "emails or receive encrypted emails.\n"
636 "Do you want to create a new key pair now?"),
637 GTK_STOCK_NO, "+" GTK_STOCK_YES, NULL);
638 if (val == G_ALERTDEFAULT) {
639 prefs_gpg_get_config()->gpg_ask_create_key = FALSE;
640 prefs_gpg_save_config();
646 name = g_strdup(account->name);
648 name = g_strdup(account->address);
650 email = g_strdup(account->address);
651 tmp = g_strdup_printf("%s <%s>", account->name?account->name:account->address, account->address);
653 passphrase = passphrase_mbox(tmp, NULL, prev_bad, 1);
654 if (passphrase == NULL) {
660 passphrase_second = passphrase_mbox(tmp, NULL, 0, 2);
661 if (passphrase_second == NULL) {
668 if (strcmp(passphrase, passphrase_second)) {
670 g_free(passphrase_second);
675 key_parms = g_strdup_printf("<GnupgKeyParms format=\"internal\">\n"
678 "Subkey-Type: ELG-E\n"
679 "Subkey-Length: 2048\n"
684 "</GnupgKeyParms>\n",
686 strlen(passphrase)?"Passphrase: ":"",
688 strlen(passphrase)?"\n":"");
689 #ifndef G_PLATFORM_WIN32
690 if (mlock(passphrase, strlen(passphrase)) == -1)
691 debug_print("couldn't lock passphrase\n");
692 if (mlock(passphrase_second, strlen(passphrase_second)) == -1)
693 debug_print("couldn't lock passphrase2\n");
698 g_free(passphrase_second);
701 err = gpgme_new (&ctx);
703 alertpanel_error(_("Couldn't generate a new key pair: %s"),
704 gpgme_strerror(err));
710 window = label_window_create(_("Generating your new key pair... Please move the mouse "
711 "around to help generate entropy..."));
713 err = gpgme_op_genkey(ctx, key_parms, NULL, NULL);
716 label_window_destroy(window);
719 alertpanel_error(_("Couldn't generate a new key pair: %s"), gpgme_strerror(err));
723 key = gpgme_op_genkey_result(ctx);
725 alertpanel_error(_("Couldn't generate a new key pair: unknown error"));
729 gchar *buf = g_strdup_printf(_("Your new key pair has been generated. "
730 "Its fingerprint is:\n%s\n\nDo you want to export it "
732 key->fpr ? key->fpr:"null");
733 AlertValue val = alertpanel(_("Key generated"), buf,
734 GTK_STOCK_NO, "+" GTK_STOCK_YES, NULL);
736 if (val == G_ALERTALTERNATE) {
738 gchar *cmd = g_strdup_printf("gpg --no-tty --send-keys %s", key->fpr);
744 } else if (pid == 0) {
747 res = WEXITSTATUS(res);
751 time_t start_wait = time(NULL);
754 if (waitpid(pid, &status, WNOHANG) == 0 || !WIFEXITED(status)) {
757 res = WEXITSTATUS(status);
760 if (time(NULL) - start_wait > 5) {
761 debug_print("SIGTERM'ing gpg\n");
764 if (time(NULL) - start_wait > 6) {
765 debug_print("SIGKILL'ing gpg\n");
772 alertpanel_notice(_("Key exported."));
774 alertpanel_error(_("Couldn't export key."));
778 alertpanel_error(_("Key export isn't implemented in Windows."));
782 prefs_gpg_get_config()->gpg_ask_create_key = FALSE;
783 prefs_gpg_save_config();
787 gboolean sgpgme_has_secret_key(void)
789 gpgme_error_t err = 0;
793 err = gpgme_new (&ctx);
795 debug_print("err : %s\n", gpgme_strerror(err));
798 err = gpgme_op_keylist_start(ctx, NULL, TRUE);
800 err = gpgme_op_keylist_next(ctx, &key);
801 gpgme_op_keylist_end(ctx);
803 if (gpg_err_code(err) == GPG_ERR_EOF)
809 void sgpgme_check_create_key(void)
811 if (prefs_gpg_get_config()->gpg_ask_create_key &&
812 !sgpgme_has_secret_key()) {
813 sgpgme_create_secret_key(NULL, TRUE);
815 prefs_gpg_get_config()->gpg_ask_create_key = FALSE;
816 prefs_gpg_save_config();
820 void *sgpgme_data_release_and_get_mem(gpgme_data_t data, size_t *len)
832 /* I know it's deprecated, but we don't compile with _LARGEFILE */
833 gpgme_data_rewind(data);
834 while ((r = gpgme_data_read(data, buf, BUFSIZ)) > 0) {
835 result = realloc(result, r + w);
836 memcpy(result+w, buf, r);
842 gpgme_data_release(data);
850 #endif /* USE_GPGME */