2 * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
3 * Copyright (C) 1999-2006 Hiroyuki Yamamoto & 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 2 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, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
30 #include <glib/gi18n.h>
33 #include <sys/types.h>
35 #if (defined(__DragonFly__) || defined (__NetBSD__) || defined (__FreeBSD__) || defined (__OpenBSD__))
36 # include <sys/signal.h>
47 #include "prefs_common.h"
49 #include "alertpanel.h"
50 #include "passphrase.h"
51 #include "prefs_gpg.h"
53 #include "select-keys.h"
55 static void sgpgme_disable_all(void)
57 /* FIXME: set a flag, so that we don't bother the user with failed
61 gpgme_verify_result_t sgpgme_verify_signature(gpgme_ctx_t ctx, gpgme_data_t sig,
62 gpgme_data_t plain, gpgme_data_t dummy)
64 gpgme_verify_result_t status = NULL;
67 if ((err = gpgme_op_verify(ctx, sig, plain, dummy)) != GPG_ERR_NO_ERROR) {
68 debug_print("op_verify err %s\n", gpgme_strerror(err));
69 privacy_set_error(gpgme_strerror(err));
70 return GINT_TO_POINTER(-GPG_ERR_SYSTEM_ERROR);
73 status = gpgme_op_verify_result(ctx);
74 if (status && status->signatures == NULL) {
75 debug_print("no signature found\n");
76 privacy_set_error(_("No signature found"));
77 return GINT_TO_POINTER(-GPG_ERR_SYSTEM_ERROR);
82 SignatureStatus sgpgme_sigstat_gpgme_to_privacy(gpgme_ctx_t ctx, gpgme_verify_result_t status)
84 unsigned long validity = 0;
85 gpgme_signature_t sig = NULL;
87 if (GPOINTER_TO_INT(status) == -GPG_ERR_SYSTEM_ERROR) {
88 debug_print("system error\n");
89 return SIGNATURE_CHECK_FAILED;
93 debug_print("status == NULL\n");
94 return SIGNATURE_UNCHECKED;
96 sig = status->signatures;
99 debug_print("sig == NULL\n");
100 return SIGNATURE_UNCHECKED;
102 validity = sig->validity;
104 debug_print("err code %d\n", gpg_err_code(sig->status));
105 switch (gpg_err_code(sig->status)) {
106 case GPG_ERR_NO_ERROR:
107 switch (gpg_err_code(sig->validity)) {
108 case GPGME_VALIDITY_NEVER:
109 return SIGNATURE_INVALID;
110 case GPGME_VALIDITY_UNKNOWN:
111 case GPGME_VALIDITY_UNDEFINED:
112 case GPGME_VALIDITY_MARGINAL:
113 case GPGME_VALIDITY_FULL:
114 case GPGME_VALIDITY_ULTIMATE:
117 return SIGNATURE_CHECK_FAILED;
119 case GPG_ERR_SIG_EXPIRED:
120 case GPG_ERR_KEY_EXPIRED:
121 return SIGNATURE_WARN;
122 case GPG_ERR_BAD_SIGNATURE:
123 return SIGNATURE_INVALID;
124 case GPG_ERR_NO_PUBKEY:
125 return SIGNATURE_CHECK_FAILED;
127 return SIGNATURE_CHECK_FAILED;
129 return SIGNATURE_CHECK_FAILED;
132 static const gchar *get_validity_str(unsigned long validity)
134 switch (gpg_err_code(validity)) {
135 case GPGME_VALIDITY_UNKNOWN:
137 case GPGME_VALIDITY_UNDEFINED:
138 return _("Undefined");
139 case GPGME_VALIDITY_NEVER:
141 case GPGME_VALIDITY_MARGINAL:
142 return _("Marginal");
143 case GPGME_VALIDITY_FULL:
145 case GPGME_VALIDITY_ULTIMATE:
146 return _("Ultimate");
152 static gchar *extract_name(const char *uid)
156 if (!strncmp(uid, "CN=", 3)) {
157 gchar *result = g_strdup(uid+3);
158 if (strstr(result, ","))
159 *(strstr(result, ",")) = '\0';
161 } else if (strstr(uid, ",CN=")) {
162 gchar *result = g_strdup(strstr(uid, ",CN=")+4);
163 if (strstr(result, ","))
164 *(strstr(result, ",")) = '\0';
167 return g_strdup(uid);
170 gchar *sgpgme_sigstat_info_short(gpgme_ctx_t ctx, gpgme_verify_result_t status)
172 gpgme_signature_t sig = NULL;
175 gchar *result = NULL;
176 gpgme_error_t err = 0;
177 static gboolean warned = FALSE;
179 if (GPOINTER_TO_INT(status) == -GPG_ERR_SYSTEM_ERROR) {
180 return g_strdup_printf(_("The signature can't be checked - %s"), privacy_get_error());
183 if (status == NULL) {
184 return g_strdup(_("The signature has not been checked."));
186 sig = status->signatures;
188 return g_strdup(_("The signature has not been checked."));
191 err = gpgme_get_key(ctx, sig->fpr, &key, 0);
192 if (gpg_err_code(err) == GPG_ERR_NO_AGENT) {
194 alertpanel_error(_("PGP Core: Can't get key - no gpg-agent running."));
196 g_warning(_("PGP Core: Can't get key - no gpg-agent running."));
200 uname = extract_name(key->uids->uid);
202 uname = g_strdup("<?>");
203 switch (gpg_err_code(sig->status)) {
204 case GPG_ERR_NO_ERROR:
205 switch (gpg_err_code(sig->validity)) {
206 case GPGME_VALIDITY_MARGINAL:
207 case GPGME_VALIDITY_FULL:
208 case GPGME_VALIDITY_ULTIMATE:
209 result = g_strdup_printf(_("Good signature from %s."), uname);
211 case GPGME_VALIDITY_UNKNOWN:
212 case GPGME_VALIDITY_UNDEFINED:
213 case GPGME_VALIDITY_NEVER:
215 result = g_strdup_printf(_("Good signature (untrusted) from %s."), uname);
219 case GPG_ERR_SIG_EXPIRED:
220 result = g_strdup_printf(_("Expired signature from %s."), uname);
222 case GPG_ERR_KEY_EXPIRED:
223 result = g_strdup_printf(_("Expired key from %s."), uname);
225 case GPG_ERR_BAD_SIGNATURE:
226 result = g_strdup_printf(_("Bad signature from %s."), uname);
228 case GPG_ERR_NO_PUBKEY: {
229 gchar *id = g_strdup(sig->fpr + strlen(sig->fpr)-8);
230 result = g_strdup_printf(_("Key 0x%s not available to verify this signature."), id);
235 result = g_strdup(_("The signature has not been checked."));
239 result = g_strdup(_("Error"));
244 gchar *sgpgme_sigstat_info_full(gpgme_ctx_t ctx, gpgme_verify_result_t status)
249 gpgme_signature_t sig = status->signatures;
251 siginfo = g_string_sized_new(64);
253 gpgme_user_id_t user = NULL;
256 const gchar *keytype, *keyid, *uid;
258 gpgme_get_key(ctx, sig->fpr, &key, 0);
262 keytype = gpgme_pubkey_algo_name(
263 key->subkeys->pubkey_algo);
264 keyid = key->subkeys->keyid;
271 g_string_append_printf(siginfo,
272 _("Signature made using %s key ID %s\n"),
275 switch (gpg_err_code(sig->status)) {
276 case GPG_ERR_NO_ERROR:
277 case GPG_ERR_KEY_EXPIRED:
278 g_string_append_printf(siginfo,
279 _("Good signature from \"%s\" (Trust: %s)\n"),
280 uid, get_validity_str(sig->validity));
282 case GPG_ERR_SIG_EXPIRED:
283 g_string_append_printf(siginfo,
284 _("Expired signature from \"%s\"\n"),
287 case GPG_ERR_BAD_SIGNATURE:
288 g_string_append_printf(siginfo,
289 _("BAD signature from \"%s\"\n"),
295 if (sig->status != GPG_ERR_BAD_SIGNATURE) {
297 user = user ? user->next : NULL;
298 while (user != NULL) {
299 g_string_append_printf(siginfo,
305 g_string_append_printf(siginfo,
306 _("Primary key fingerprint: %s\n"),
307 sig ? sig->fpr: "?");
308 #ifdef HAVE_GPGME_PKA_TRUST
309 if (sig->pka_trust == 1 && sig->pka_address) {
310 g_string_append_printf(siginfo,
311 _("WARNING: Signer's address \"%s\" "
312 "does not match DNS entry\n"),
315 else if (sig->pka_trust == 2 && sig->pka_address) {
316 g_string_append_printf(siginfo,
317 _("Verified signer's address is \"%s\"\n"),
319 /* FIXME: Compare the address to the
322 #endif /*HAVE_GPGME_PKA_TRUST*/
325 g_string_append(siginfo, "\n");
331 g_string_free(siginfo, FALSE);
335 gpgme_data_t sgpgme_data_from_mimeinfo(MimeInfo *mimeinfo)
337 gpgme_data_t data = NULL;
339 FILE *fp = g_fopen(mimeinfo->data.filename, "rb");
340 gchar *tmp_file = NULL;
345 tmp_file = get_tmp_file();
346 copy_file_part(fp, mimeinfo->offset, mimeinfo->length, tmp_file);
349 debug_print("tmp file %s\n", tmp_file);
351 err = gpgme_data_new_from_file(&data, tmp_file, 1);
355 debug_print("data %p (%d %d)\n", (void *)&data, mimeinfo->offset, mimeinfo->length);
357 debug_print ("gpgme_data_new_from_file failed: %s\n",
358 gpgme_strerror (err));
359 privacy_set_error(_("Couldn't get data from message, %s"), gpgme_strerror(err));
365 gpgme_data_t sgpgme_decrypt_verify(gpgme_data_t cipher, gpgme_verify_result_t *status, gpgme_ctx_t ctx)
367 struct passphrase_cb_info_s info;
371 memset (&info, 0, sizeof info);
373 if ((err = gpgme_data_new(&plain)) != GPG_ERR_NO_ERROR) {
375 privacy_set_error(_("Couldn't initialize data, %s"), gpgme_strerror(err));
379 if (gpgme_get_protocol(ctx) == GPGME_PROTOCOL_OpenPGP) {
380 if (!getenv("GPG_AGENT_INFO")) {
382 gpgme_set_passphrase_cb (ctx, gpgmegtk_passphrase_cb, &info);
386 gpgme_set_passphrase_cb (ctx, NULL, &info);
390 if (gpgme_get_protocol(ctx) == GPGME_PROTOCOL_OpenPGP) {
391 err = gpgme_op_decrypt_verify(ctx, cipher, plain);
392 if (err != GPG_ERR_NO_ERROR) {
393 debug_print("can't decrypt (%s)\n", gpgme_strerror(err));
394 privacy_set_error("%s", gpgme_strerror(err));
395 gpgmegtk_free_passphrase();
396 gpgme_data_release(plain);
400 err = gpgme_data_rewind(plain);
402 debug_print("can't seek (%d %d %s)\n", err, errno, strerror(errno));
405 debug_print("decrypted.\n");
406 *status = gpgme_op_verify_result (ctx);
408 err = gpgme_op_decrypt(ctx, cipher, plain);
409 if (err != GPG_ERR_NO_ERROR) {
410 debug_print("can't decrypt (%s)\n", gpgme_strerror(err));
411 gpgmegtk_free_passphrase();
412 gpgme_data_release(plain);
416 err = gpgme_data_rewind(plain);
418 debug_print("can't seek (%d %d %s)\n", err, errno, strerror(errno));
421 debug_print("decrypted.\n");
422 *status = gpgme_op_verify_result (ctx);
427 gchar *sgpgme_get_encrypt_data(GSList *recp_names, gpgme_protocol_t proto)
429 SelectionResult result = KEY_SELECTION_CANCEL;
430 gpgme_key_t *keys = gpgmegtk_recipient_selection(recp_names, &result,
436 if (result == KEY_SELECTION_DONT)
437 return g_strdup("_DONT_ENCRYPT_");
442 gpgme_subkey_t skey = keys[i]->subkeys;
443 gchar *fpr = skey->fpr;
445 debug_print("adding %s\n", fpr);
446 tmp = g_strconcat(ret?ret:"", fpr, " ", NULL);
454 gboolean sgpgme_setup_signers(gpgme_ctx_t ctx, PrefsAccount *account)
456 GPGAccountConfig *config;
458 gpgme_signers_clear(ctx);
460 config = prefs_gpg_account_get_config(account);
462 switch(config->sign_key) {
463 case SIGN_KEY_DEFAULT:
464 debug_print("using default gnupg key\n");
466 case SIGN_KEY_BY_FROM:
467 debug_print("using key for %s\n", account->address);
469 case SIGN_KEY_CUSTOM:
470 debug_print("using key for %s\n", config->sign_key_id);
474 if (config->sign_key != SIGN_KEY_DEFAULT) {
476 gpgme_key_t key, key2;
479 if (config->sign_key == SIGN_KEY_BY_FROM)
480 keyid = account->address;
481 else if (config->sign_key == SIGN_KEY_CUSTOM)
482 keyid = config->sign_key_id;
486 err = gpgme_op_keylist_start(ctx, keyid, 1);
488 err = gpgme_op_keylist_next(ctx, &key);
490 g_warning("setup_signers start: %s", gpgme_strerror(err));
491 privacy_set_error(_("Secret key not found (%s)"), gpgme_strerror(err));
495 err = gpgme_op_keylist_next(ctx, &key2);
497 g_warning("ambiguous specification of secret key '%s'\n",
499 privacy_set_error(_("Secret key specification is ambiguous"));
503 gpgme_op_keylist_end(ctx);
504 err = gpgme_signers_add(ctx, key);
505 gpgme_key_release(key);
508 g_warning("error adding secret key: %s\n", gpgme_strerror(err));
509 privacy_set_error(_("Error setting secret key: %s"), gpgme_strerror(err));
514 prefs_gpg_account_free_config(config);
518 prefs_gpg_account_free_config(config);
524 gpgme_engine_info_t engineInfo;
525 if (gpgme_check_version("1.0.0")) {
527 gpgme_set_locale(NULL, LC_CTYPE, setlocale(LC_CTYPE, NULL));
530 gpgme_set_locale(NULL, LC_MESSAGES, setlocale(LC_MESSAGES, NULL));
532 if (!gpgme_get_engine_info(&engineInfo)) {
534 debug_print("GpgME Protocol: %s\n"
535 "Version: %s (req %s)\n"
537 gpgme_get_protocol_name(engineInfo->protocol),
538 engineInfo->version ? engineInfo->version:"???",
539 engineInfo->req_version ? engineInfo->req_version:"???",
540 engineInfo->file_name ? engineInfo->file_name:"???");
541 if (engineInfo->protocol == GPGME_PROTOCOL_OpenPGP
542 && gpgme_engine_check_version(engineInfo->protocol) !=
544 if (engineInfo->file_name && !engineInfo->version) {
545 alertpanel_error(_("Gpgme protocol '%s' is unusable: "
546 "Engine '%s' isn't installed properly."),
547 gpgme_get_protocol_name(engineInfo->protocol),
548 engineInfo->file_name);
549 } else if (engineInfo->file_name && engineInfo->version
550 && engineInfo->req_version) {
551 alertpanel_error(_("Gpgme protocol '%s' is unusable: "
552 "Engine '%s' version %s is installed, "
553 "but version %s is required.\n"),
554 gpgme_get_protocol_name(engineInfo->protocol),
555 engineInfo->file_name,
557 engineInfo->req_version);
559 alertpanel_error(_("Gpgme protocol '%s' is unusable "
560 "(unknown problem)"),
561 gpgme_get_protocol_name(engineInfo->protocol));
564 engineInfo = engineInfo->next;
568 sgpgme_disable_all();
570 if (prefs_gpg_get_config()->gpg_warning) {
573 val = alertpanel_full
575 _("GnuPG is not installed properly, or needs "
577 "OpenPGP support disabled."),
578 GTK_STOCK_CLOSE, NULL, NULL, TRUE, NULL,
579 ALERT_WARNING, G_ALERTDEFAULT);
580 if (val & G_ALERTDISABLE)
581 prefs_gpg_get_config()->gpg_warning = FALSE;
588 gpgmegtk_free_passphrase();
591 void sgpgme_create_secret_key(PrefsAccount *account, gboolean ask_create)
593 AlertValue val = G_ALERTDEFAULT;
594 gchar *key_parms = NULL;
597 gchar *passphrase = NULL, *passphrase_second = NULL;
600 gpgme_error_t err = 0;
602 GtkWidget *window = NULL;
603 gpgme_genkey_result_t key;
606 account = account_get_default();
608 if (account->address == NULL) {
609 alertpanel_error(_("You have to save the account's information with \"OK\" "
610 "before being able to generate a key pair.\n"));
614 val = alertpanel(_("No PGP key found"),
615 _("Claws Mail did not find a secret PGP key, "
616 "which means that you won't be able to sign "
617 "emails or receive encrypted emails.\n"
618 "Do you want to create a new key pair now?"),
619 GTK_STOCK_NO, "+" GTK_STOCK_YES, NULL);
620 if (val == G_ALERTDEFAULT) {
621 prefs_gpg_get_config()->gpg_ask_create_key = FALSE;
622 prefs_gpg_save_config();
628 name = g_strdup(account->name);
630 name = g_strdup(account->address);
632 email = g_strdup(account->address);
633 tmp = g_strdup_printf("%s <%s>", account->name?account->name:account->address, account->address);
635 passphrase = passphrase_mbox(tmp, NULL, prev_bad, 1);
636 if (passphrase == NULL) {
642 passphrase_second = passphrase_mbox(tmp, NULL, 0, 2);
643 if (passphrase_second == NULL) {
650 if (strcmp(passphrase, passphrase_second)) {
652 g_free(passphrase_second);
657 key_parms = g_strdup_printf("<GnupgKeyParms format=\"internal\">\n"
660 "Subkey-Type: ELG-E\n"
661 "Subkey-Length: 2048\n"
666 "</GnupgKeyParms>\n",
668 strlen(passphrase)?"Passphrase: ":"",
670 strlen(passphrase)?"\n":"");
671 #ifndef G_PLATFORM_WIN32
672 if (mlock(passphrase, strlen(passphrase)) == -1)
673 debug_print("couldn't lock passphrase\n");
674 if (mlock(passphrase_second, strlen(passphrase_second)) == -1)
675 debug_print("couldn't lock passphrase2\n");
680 g_free(passphrase_second);
683 err = gpgme_new (&ctx);
685 alertpanel_error(_("Couldn't generate a new key pair: %s"),
686 gpgme_strerror(err));
692 window = label_window_create(_("Generating your new key pair... Please move the mouse "
693 "around to help generate entropy..."));
695 err = gpgme_op_genkey(ctx, key_parms, NULL, NULL);
698 gtk_widget_destroy(window);
701 alertpanel_error(_("Couldn't generate a new key pair: %s"), gpgme_strerror(err));
705 key = gpgme_op_genkey_result(ctx);
707 alertpanel_error(_("Couldn't generate a new key pair: unknown error"));
711 gchar *buf = g_strdup_printf(_("Your new key pair has been generated. "
712 "Its fingerprint is:\n%s\n\nDo you want to export it "
714 key->fpr ? key->fpr:"null");
715 AlertValue val = alertpanel(_("Key generated"), buf,
716 GTK_STOCK_NO, "+" GTK_STOCK_YES, NULL);
718 if (val == G_ALERTALTERNATE) {
720 gchar *cmd = g_strdup_printf("gpg --no-tty --send-keys %s", key->fpr);
726 } else if (pid == 0) {
729 res = WEXITSTATUS(res);
733 time_t start_wait = time(NULL);
736 if (waitpid(pid, &status, WNOHANG) == 0 || !WIFEXITED(status)) {
739 res = WEXITSTATUS(status);
742 if (time(NULL) - start_wait > 5) {
743 debug_print("SIGTERM'ing gpg\n");
746 if (time(NULL) - start_wait > 6) {
747 debug_print("SIGKILL'ing gpg\n");
754 alertpanel_notice(_("Key exported."));
756 alertpanel_error(_("Couldn't export key."));
760 alertpanel_error(_("Key export isn't implemented in Windows."));
764 prefs_gpg_get_config()->gpg_ask_create_key = FALSE;
765 prefs_gpg_save_config();
769 gboolean sgpgme_has_secret_key(void)
771 gpgme_error_t err = 0;
775 err = gpgme_new (&ctx);
777 debug_print("err : %s\n", gpgme_strerror(err));
780 err = gpgme_op_keylist_start(ctx, NULL, TRUE);
782 err = gpgme_op_keylist_next(ctx, &key);
783 gpgme_op_keylist_end(ctx);
785 if (gpg_err_code(err) == GPG_ERR_EOF)
791 void sgpgme_check_create_key(void)
793 if (prefs_gpg_get_config()->gpg_ask_create_key &&
794 !sgpgme_has_secret_key()) {
795 sgpgme_create_secret_key(NULL, TRUE);
797 prefs_gpg_get_config()->gpg_ask_create_key = FALSE;
798 prefs_gpg_save_config();
801 #endif /* USE_GPGME */