src/plugins/pgpcore/sgpgme.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2007 Hiroyuki Yamamoto & the Claws Mail team
   4  *
   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.
   9  *
  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.
  14  *
  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.
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #ifdef USE_GPGME
  25
  26 #include <time.h>
  27 #include <gtk/gtk.h>
  28 #include <gpgme.h>
  29 #include <glib.h>
  30 #include <glib/gi18n.h>
  31 #include <stdio.h>
  32 #include <errno.h>
  33 #include <sys/types.h>
  34 #include <sys/wait.h>
  35 #if (defined(__DragonFly__) || defined (__NetBSD__) || defined (__FreeBSD__) || defined (__OpenBSD__))
  36 #  include <sys/signal.h>
  37 #endif
  38 #ifndef G_OS_WIN32
  39 #include <sys/mman.h>
  40 #endif
  41 #if HAVE_LOCALE_H
  42 #  include <locale.h>
  43 #endif
  44
  45 #include "sgpgme.h"
  46 #include "privacy.h"
  47 #include "prefs_common.h"
  48 #include "utils.h"
  49 #include "alertpanel.h"
  50 #include "passphrase.h"
  51 #include "prefs_gpg.h"
  52 #include "account.h"
  53 #include "select-keys.h"
  54
  55 static void sgpgme_disable_all(void)
  56 {
  57     /* FIXME: set a flag, so that we don't bother the user with failed
  58      * gpgme messages */
  59 }
  60
  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)
  63 {
  64         gpgme_verify_result_t status = NULL;
  65         gpgme_error_t err;
  66
  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);
  71
  72         }
  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);
  78         }
  79         return status;
  80 }
  81
  82 SignatureStatus sgpgme_sigstat_gpgme_to_privacy(gpgme_ctx_t ctx, gpgme_verify_result_t status)
  83 {
  84         unsigned long validity = 0;
  85         gpgme_signature_t sig = NULL;
  86
  87         if (GPOINTER_TO_INT(status) == -GPG_ERR_SYSTEM_ERROR) {
  88                 debug_print("system error\n");
  89                 return SIGNATURE_CHECK_FAILED;
  90         }
  91
  92         if (status == NULL) {
  93                 debug_print("status == NULL\n");
  94                 return SIGNATURE_UNCHECKED;
  95         }
  96         sig = status->signatures;
  97
  98         if (sig == NULL) {
  99                 debug_print("sig == NULL\n");
 100                 return SIGNATURE_UNCHECKED;
 101         }
 102         validity = sig->validity;
 103
 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:
 115                         return SIGNATURE_OK;
 116                 default:
 117                         return SIGNATURE_CHECK_FAILED;
 118                 }
 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;
 126         default:
 127                 return SIGNATURE_CHECK_FAILED;
 128         }
 129         return SIGNATURE_CHECK_FAILED;
 130 }
 131
 132 static const gchar *get_validity_str(unsigned long validity)
 133 {
 134         switch (gpg_err_code(validity)) {
 135         case GPGME_VALIDITY_UNKNOWN:
 136                 return _("Unknown");
 137         case GPGME_VALIDITY_UNDEFINED:
 138                 return _("Undefined");
 139         case GPGME_VALIDITY_NEVER:
 140                 return _("Never");
 141         case GPGME_VALIDITY_MARGINAL:
 142                 return _("Marginal");
 143         case GPGME_VALIDITY_FULL:
 144                 return _("Full");
 145         case GPGME_VALIDITY_ULTIMATE:
 146                 return _("Ultimate");
 147         default:
 148                 return _("Error");
 149         }
 150 }
 151
 152 static gchar *extract_name(const char *uid)
 153 {
 154         if (uid == NULL)
 155                 return NULL;
 156         if (!strncmp(uid, "CN=", 3)) {
 157                 gchar *result = g_strdup(uid+3);
 158                 if (strstr(result, ","))
 159                         *(strstr(result, ",")) = '\0';
 160                 return result;
 161         } else if (strstr(uid, ",CN=")) {
 162                 gchar *result = g_strdup(strstr(uid, ",CN=")+4);
 163                 if (strstr(result, ","))
 164                         *(strstr(result, ",")) = '\0';
 165                 return result;
 166         } else {
 167                 return g_strdup(uid);
 168         }
 169 }
 170 gchar *sgpgme_sigstat_info_short(gpgme_ctx_t ctx, gpgme_verify_result_t status)
 171 {
 172         gpgme_signature_t sig = NULL;
 173         gchar *uname = NULL;
 174         gpgme_key_t key;
 175         gchar *result = NULL;
 176         gpgme_error_t err = 0;
 177         static gboolean warned = FALSE;
 178
 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());
 181         }
 182
 183         if (status == NULL) {
 184                 return g_strdup(_("The signature has not been checked."));
 185         }
 186         sig = status->signatures;
 187         if (sig == NULL) {
 188                 return g_strdup(_("The signature has not been checked."));
 189         }
 190
 191         err = gpgme_get_key(ctx, sig->fpr, &key, 0);
 192         if (gpg_err_code(err) == GPG_ERR_NO_AGENT) {
 193                 if (!warned)
 194                         alertpanel_error(_("PGP Core: Can't get key - no gpg-agent running."));
 195                 else
 196                         g_warning(_("PGP Core: Can't get key - no gpg-agent running."));
 197                 warned = TRUE;
 198         }
 199         if (key)
 200                 uname = extract_name(key->uids->uid);
 201         else
 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);
 210                         break;
 211                 case GPGME_VALIDITY_UNKNOWN:
 212                 case GPGME_VALIDITY_UNDEFINED:
 213                 case GPGME_VALIDITY_NEVER:
 214                 default:
 215                         result = g_strdup_printf(_("Good signature (untrusted) from %s."), uname);
 216                         break;
 217                 }
 218                 break;
 219         case GPG_ERR_SIG_EXPIRED:
 220                 result = g_strdup_printf(_("Expired signature from %s."), uname);
 221                 break;
 222         case GPG_ERR_KEY_EXPIRED:
 223                 result = g_strdup_printf(_("Expired key from %s."), uname);
 224                 break;
 225         case GPG_ERR_BAD_SIGNATURE:
 226                 result = g_strdup_printf(_("Bad signature from %s."), uname);
 227                 break;
 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);
 231                 g_free(id);
 232                 break;
 233                 }
 234         default:
 235                 result = g_strdup(_("The signature has not been checked."));
 236                 break;
 237         }
 238         if (result == NULL)
 239                 result = g_strdup(_("Error"));
 240         g_free(uname);
 241         return result;
 242 }
 243
 244 gchar *sgpgme_sigstat_info_full(gpgme_ctx_t ctx, gpgme_verify_result_t status)
 245 {
 246         gint i = 0;
 247         gchar *ret;
 248         GString *siginfo;
 249         gpgme_signature_t sig = status->signatures;
 250
 251         siginfo = g_string_sized_new(64);
 252         while (sig) {
 253                 gpgme_user_id_t user = NULL;
 254                 gpgme_key_t key;
 255
 256                 const gchar *keytype, *keyid, *uid;
 257
 258                 gpgme_get_key(ctx, sig->fpr, &key, 0);
 259
 260                 if (key) {
 261                         user = key->uids;
 262                         keytype = gpgme_pubkey_algo_name(
 263                                         key->subkeys->pubkey_algo);
 264                         keyid = key->subkeys->keyid;
 265                         uid = user->uid;
 266                 } else {
 267                         keytype = "?";
 268                         keyid = "?";
 269                         uid = "?";
 270                 }
 271                 g_string_append_printf(siginfo,
 272                         _("Signature made using %s key ID %s\n"),
 273                         keytype, keyid);
 274
 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));
 281                         break;
 282                 case GPG_ERR_SIG_EXPIRED:
 283                         g_string_append_printf(siginfo,
 284                                 _("Expired signature from \"%s\"\n"),
 285                                 uid);
 286                         break;
 287                 case GPG_ERR_BAD_SIGNATURE:
 288                         g_string_append_printf(siginfo,
 289                                 _("BAD signature from \"%s\"\n"),
 290                                 uid);
 291                         break;
 292                 default:
 293                         break;
 294                 }
 295                 if (sig->status != GPG_ERR_BAD_SIGNATURE) {
 296                         gint j = 1;
 297                         user = user ? user->next : NULL;
 298                         while (user != NULL) {
 299                                 g_string_append_printf(siginfo,
 300                                         _("                aka \"%s\"\n"),
 301                                         user->uid);
 302                                 j++;
 303                                 user = user->next;
 304                         }
 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"),
 313                                    sig->pka_address);
 314                         }
 315                         else if (sig->pka_trust == 2 && sig->pka_address) {
 316                                 g_string_append_printf(siginfo,
 317                                    _("Verified signer's address is \"%s\"\n"),
 318                                    sig->pka_address);
 319                                 /* FIXME: Compare the address to the
 320                                  * From: address.  */
 321                         }
 322 #endif /*HAVE_GPGME_PKA_TRUST*/
 323                 }
 324
 325                 g_string_append(siginfo, "\n");
 326                 i++;
 327                 sig = sig->next;
 328         }
 329
 330         ret = siginfo->str;
 331         g_string_free(siginfo, FALSE);
 332         return ret;
 333 }
 334
 335 gpgme_data_t sgpgme_data_from_mimeinfo(MimeInfo *mimeinfo)
 336 {
 337         gpgme_data_t data = NULL;
 338         gpgme_error_t err;
 339         FILE *fp = g_fopen(mimeinfo->data.filename, "rb");
 340         gchar *tmp_file = NULL;
 341
 342         if (!fp)
 343                 return NULL;
 344
 345         tmp_file = get_tmp_file();
 346         copy_file_part(fp, mimeinfo->offset, mimeinfo->length, tmp_file);
 347         fclose(fp);
 348         fp = NULL;
 349         debug_print("tmp file %s\n", tmp_file);
 350
 351         err = gpgme_data_new_from_file(&data, tmp_file, 1);
 352         g_unlink(tmp_file);
 353         g_free(tmp_file);
 354
 355         debug_print("data %p (%d %d)\n", (void *)&data, mimeinfo->offset, mimeinfo->length);
 356         if (err) {
 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));
 360                 return NULL;
 361         }
 362         return data;
 363 }
 364
 365 gpgme_data_t sgpgme_decrypt_verify(gpgme_data_t cipher, gpgme_verify_result_t *status, gpgme_ctx_t ctx)
 366 {
 367         struct passphrase_cb_info_s info;
 368         gpgme_data_t plain;
 369         gpgme_error_t err;
 370
 371         memset (&info, 0, sizeof info);
 372
 373         if ((err = gpgme_data_new(&plain)) != GPG_ERR_NO_ERROR) {
 374                 gpgme_release(ctx);
 375                 privacy_set_error(_("Couldn't initialize data, %s"), gpgme_strerror(err));
 376                 return NULL;
 377         }
 378
 379         if (gpgme_get_protocol(ctx) == GPGME_PROTOCOL_OpenPGP) {
 380                 if (!getenv("GPG_AGENT_INFO") || !prefs_gpg_get_config()->use_gpg_agent) {
 381                         info.c = ctx;
 382                         gpgme_set_passphrase_cb (ctx, gpgmegtk_passphrase_cb, &info);
 383                 }
 384         } else {
 385                 info.c = ctx;
 386                 gpgme_set_passphrase_cb (ctx, NULL, &info);
 387         }
 388
 389
 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);
 397                         return NULL;
 398                 }
 399
 400                 err = gpgme_data_rewind(plain);
 401                 if (err) {
 402                         debug_print("can't seek (%d %d %s)\n", err, errno, strerror(errno));
 403                 }
 404
 405                 debug_print("decrypted.\n");
 406                 *status = gpgme_op_verify_result (ctx);
 407         } else {
 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                         privacy_set_error("%s", gpgme_strerror(err));
 412                         gpgmegtk_free_passphrase();
 413                         gpgme_data_release(plain);
 414                         return NULL;
 415                 }
 416
 417                 err = gpgme_data_rewind(plain);
 418                 if (err) {
 419                         debug_print("can't seek (%d %d %s)\n", err, errno, strerror(errno));
 420                 }
 421
 422                 debug_print("decrypted.\n");
 423                 *status = gpgme_op_verify_result (ctx);
 424         }
 425         return plain;
 426 }
 427
 428 gchar *sgpgme_get_encrypt_data(GSList *recp_names, gpgme_protocol_t proto)
 429 {
 430         SelectionResult result = KEY_SELECTION_CANCEL;
 431         gpgme_key_t *keys = gpgmegtk_recipient_selection(recp_names, &result,
 432                                 proto);
 433         gchar *ret = NULL;
 434         int i = 0;
 435
 436         if (!keys) {
 437                 if (result == KEY_SELECTION_DONT)
 438                         return g_strdup("_DONT_ENCRYPT_");
 439                 else
 440                         return NULL;
 441         }
 442         while (keys[i]) {
 443                 gpgme_subkey_t skey = keys[i]->subkeys;
 444                 gchar *fpr = skey->fpr;
 445                 gchar *tmp = NULL;
 446                 debug_print("adding %s\n", fpr);
 447                 tmp = g_strconcat(ret?ret:"", fpr, " ", NULL);
 448                 g_free(ret);
 449                 ret = tmp;
 450                 i++;
 451         }
 452         return ret;
 453 }
 454
 455 gboolean sgpgme_setup_signers(gpgme_ctx_t ctx, PrefsAccount *account)
 456 {
 457         GPGAccountConfig *config;
 458
 459         gpgme_signers_clear(ctx);
 460
 461         config = prefs_gpg_account_get_config(account);
 462
 463         switch(config->sign_key) {
 464         case SIGN_KEY_DEFAULT:
 465                 debug_print("using default gnupg key\n");
 466                 break;
 467         case SIGN_KEY_BY_FROM:
 468                 debug_print("using key for %s\n", account->address);
 469                 break;
 470         case SIGN_KEY_CUSTOM:
 471                 debug_print("using key for %s\n", config->sign_key_id);
 472                 break;
 473         }
 474
 475         if (config->sign_key != SIGN_KEY_DEFAULT) {
 476                 gchar *keyid;
 477                 gpgme_key_t key, key2;
 478                 gpgme_error_t err;
 479
 480                 if (config->sign_key == SIGN_KEY_BY_FROM)
 481                         keyid = account->address;
 482                 else if (config->sign_key == SIGN_KEY_CUSTOM)
 483                         keyid = config->sign_key_id;
 484                 else
 485                         goto bail;
 486
 487                 err = gpgme_op_keylist_start(ctx, keyid, 1);
 488                 if (!err)
 489                         err = gpgme_op_keylist_next(ctx, &key);
 490                 if (err) {
 491                         g_warning("setup_signers start: %s", gpgme_strerror(err));
 492                         privacy_set_error(_("Secret key not found (%s)"), gpgme_strerror(err));
 493                         goto bail;
 494                 }
 495
 496                 err = gpgme_op_keylist_next(ctx, &key2);
 497                 if (!err) {
 498                         g_warning("ambiguous specification of secret key '%s'\n",
 499                                 keyid);
 500                         privacy_set_error(_("Secret key specification is ambiguous"));
 501                         goto bail;
 502                 }
 503
 504                 gpgme_op_keylist_end(ctx);
 505                 err = gpgme_signers_add(ctx, key);
 506                 gpgme_key_release(key);
 507
 508                 if (err) {
 509                         g_warning("error adding secret key: %s\n", gpgme_strerror(err));
 510                         privacy_set_error(_("Error setting secret key: %s"), gpgme_strerror(err));
 511                         goto bail;
 512                 }
 513         }
 514
 515         prefs_gpg_account_free_config(config);
 516
 517         return TRUE;
 518 bail:
 519         prefs_gpg_account_free_config(config);
 520         return FALSE;
 521 }
 522
 523 void sgpgme_init()
 524 {
 525         gpgme_engine_info_t engineInfo;
 526         if (gpgme_check_version("1.0.0")) {
 527 #ifdef LC_CTYPE
 528                 gpgme_set_locale(NULL, LC_CTYPE, setlocale(LC_CTYPE, NULL));
 529 #endif
 530 #ifdef LC_MESSAGES
 531                 gpgme_set_locale(NULL, LC_MESSAGES, setlocale(LC_MESSAGES, NULL));
 532 #endif
 533                 if (!gpgme_get_engine_info(&engineInfo)) {
 534                         while (engineInfo) {
 535                                 debug_print("GpgME Protocol: %s\n"
 536                                             "Version: %s (req %s)\n"
 537                                             "Executable: %s\n",
 538                                         gpgme_get_protocol_name(engineInfo->protocol),
 539                                         engineInfo->version ? engineInfo->version:"???",
 540                                         engineInfo->req_version ? engineInfo->req_version:"???",
 541                                         engineInfo->file_name ? engineInfo->file_name:"???");
 542                                 if (engineInfo->protocol == GPGME_PROTOCOL_OpenPGP
 543                                 &&  gpgme_engine_check_version(engineInfo->protocol) !=
 544                                         GPG_ERR_NO_ERROR) {
 545                                         if (engineInfo->file_name && !engineInfo->version) {
 546                                                 alertpanel_error(_("Gpgme protocol '%s' is unusable: "
 547                                                                    "Engine '%s' isn't installed properly."),
 548                                                                    gpgme_get_protocol_name(engineInfo->protocol),
 549                                                                    engineInfo->file_name);
 550                                         } else if (engineInfo->file_name && engineInfo->version
 551                                           && engineInfo->req_version) {
 552                                                 alertpanel_error(_("Gpgme protocol '%s' is unusable: "
 553                                                                    "Engine '%s' version %s is installed, "
 554                                                                    "but version %s is required.\n"),
 555                                                                    gpgme_get_protocol_name(engineInfo->protocol),
 556                                                                    engineInfo->file_name,
 557                                                                    engineInfo->version,
 558                                                                    engineInfo->req_version);
 559                                         } else {
 560                                                 alertpanel_error(_("Gpgme protocol '%s' is unusable "
 561                                                                    "(unknown problem)"),
 562                                                                    gpgme_get_protocol_name(engineInfo->protocol));
 563                                         }
 564                                 }
 565                                 engineInfo = engineInfo->next;
 566                         }
 567                 }
 568         } else {
 569                 sgpgme_disable_all();
 570
 571                 if (prefs_gpg_get_config()->gpg_warning) {
 572                         AlertValue val;
 573
 574                         val = alertpanel_full
 575                                 (_("Warning"),
 576                                  _("GnuPG is not installed properly, or needs "
 577                                  "to be upgraded.\n"
 578                                  "OpenPGP support disabled."),
 579                                  GTK_STOCK_CLOSE, NULL, NULL, TRUE, NULL,
 580                                  ALERT_WARNING, G_ALERTDEFAULT);
 581                         if (val & G_ALERTDISABLE)
 582                                 prefs_gpg_get_config()->gpg_warning = FALSE;
 583                 }
 584         }
 585 }
 586
 587 void sgpgme_done()
 588 {
 589         gpgmegtk_free_passphrase();
 590 }
 591
 592 void sgpgme_create_secret_key(PrefsAccount *account, gboolean ask_create)
 593 {
 594         AlertValue val = G_ALERTDEFAULT;
 595         gchar *key_parms = NULL;
 596         gchar *name = NULL;
 597         gchar *email = NULL;
 598         gchar *passphrase = NULL, *passphrase_second = NULL;
 599         gint prev_bad = 0;
 600         gchar *tmp = NULL;
 601         gpgme_error_t err = 0;
 602         gpgme_ctx_t ctx;
 603         GtkWidget *window = NULL;
 604         gpgme_genkey_result_t key;
 605
 606         if (account == NULL)
 607                 account = account_get_default();
 608
 609         if (account->address == NULL) {
 610                 alertpanel_error(_("You have to save the account's information with \"OK\" "
 611                                    "before being able to generate a key pair.\n"));
 612                 return;
 613         }
 614         if (ask_create) {
 615                 val = alertpanel(_("No PGP key found"),
 616                                 _("Claws Mail did not find a secret PGP key, "
 617                                   "which means that you won't be able to sign "
 618                                   "emails or receive encrypted emails.\n"
 619                                   "Do you want to create a new key pair now?"),
 620                                   GTK_STOCK_NO, "+" GTK_STOCK_YES, NULL);
 621                 if (val == G_ALERTDEFAULT) {
 622                         prefs_gpg_get_config()->gpg_ask_create_key = FALSE;
 623                         prefs_gpg_save_config();
 624                         return;
 625                 }
 626         }
 627
 628         if (account->name) {
 629                 name = g_strdup(account->name);
 630         } else {
 631                 name = g_strdup(account->address);
 632         }
 633         email = g_strdup(account->address);
 634         tmp = g_strdup_printf("%s <%s>", account->name?account->name:account->address, account->address);
 635 again:
 636         passphrase = passphrase_mbox(tmp, NULL, prev_bad, 1);
 637         if (passphrase == NULL) {
 638                 g_free(tmp);
 639                 g_free(email);
 640                 g_free(name);
 641                 return;
 642         }
 643         passphrase_second = passphrase_mbox(tmp, NULL, 0, 2);
 644         if (passphrase_second == NULL) {
 645                 g_free(tmp);
 646                 g_free(email);
 647                 g_free(passphrase);
 648                 g_free(name);
 649                 return;
 650         }
 651         if (strcmp(passphrase, passphrase_second)) {
 652                 g_free(passphrase);
 653                 g_free(passphrase_second);
 654                 prev_bad = 1;
 655                 goto again;
 656         }
 657
 658         key_parms = g_strdup_printf("<GnupgKeyParms format=\"internal\">\n"
 659                                         "Key-Type: DSA\n"
 660                                         "Key-Length: 1024\n"
 661                                         "Subkey-Type: ELG-E\n"
 662                                         "Subkey-Length: 2048\n"
 663                                         "Name-Real: %s\n"
 664                                         "Name-Email: %s\n"
 665                                         "Expire-Date: 0\n"
 666                                         "%s%s%s"
 667                                         "</GnupgKeyParms>\n",
 668                                         name, email,
 669                                         strlen(passphrase)?"Passphrase: ":"",
 670                                         passphrase,
 671                                         strlen(passphrase)?"\n":"");
 672 #ifndef G_PLATFORM_WIN32
 673         if (mlock(passphrase, strlen(passphrase)) == -1)
 674                 debug_print("couldn't lock passphrase\n");
 675         if (mlock(passphrase_second, strlen(passphrase_second)) == -1)
 676                 debug_print("couldn't lock passphrase2\n");
 677 #endif
 678         g_free(tmp);
 679         g_free(email);
 680         g_free(name);
 681         g_free(passphrase_second);
 682         g_free(passphrase);
 683
 684         err = gpgme_new (&ctx);
 685         if (err) {
 686                 alertpanel_error(_("Couldn't generate a new key pair: %s"),
 687                                  gpgme_strerror(err));
 688                 g_free(key_parms);
 689                 return;
 690         }
 691
 692
 693         window = label_window_create(_("Generating your new key pair... Please move the mouse "
 694                               "around to help generate entropy..."));
 695
 696         err = gpgme_op_genkey(ctx, key_parms, NULL, NULL);
 697         g_free(key_parms);
 698
 699         gtk_widget_destroy(window);
 700
 701         if (err) {
 702                 alertpanel_error(_("Couldn't generate a new key pair: %s"), gpgme_strerror(err));
 703                 gpgme_release(ctx);
 704                 return;
 705         }
 706         key = gpgme_op_genkey_result(ctx);
 707         if (key == NULL) {
 708                 alertpanel_error(_("Couldn't generate a new key pair: unknown error"));
 709                 gpgme_release(ctx);
 710                 return;
 711         } else {
 712                 gchar *buf = g_strdup_printf(_("Your new key pair has been generated. "
 713                                     "Its fingerprint is:\n%s\n\nDo you want to export it "
 714                                     "to a keyserver?"),
 715                                     key->fpr ? key->fpr:"null");
 716                 AlertValue val = alertpanel(_("Key generated"), buf,
 717                                   GTK_STOCK_NO, "+" GTK_STOCK_YES, NULL);
 718                 g_free(buf);
 719                 if (val == G_ALERTALTERNATE) {
 720 #ifndef G_OS_WIN32
 721                         gchar *cmd = g_strdup_printf("gpg --no-tty --send-keys %s", key->fpr);
 722                         int res = 0;
 723                         pid_t pid = 0;
 724                         pid = fork();
 725                         if (pid == -1) {
 726                                 res = -1;
 727                         } else if (pid == 0) {
 728                                 /* son */
 729                                 res = system(cmd);
 730                                 res = WEXITSTATUS(res);
 731                                 _exit(res);
 732                         } else {
 733                                 int status = 0;
 734                                 time_t start_wait = time(NULL);
 735                                 res = -1;
 736                                 do {
 737                                         if (waitpid(pid, &status, WNOHANG) == 0 || !WIFEXITED(status)) {
 738                                                 usleep(200000);
 739                                         } else {
 740                                                 res = WEXITSTATUS(status);
 741                                                 break;
 742                                         }
 743                                         if (time(NULL) - start_wait > 5) {
 744                                                 debug_print("SIGTERM'ing gpg\n");
 745                                                 kill(pid, SIGTERM);
 746                                         }
 747                                         if (time(NULL) - start_wait > 6) {
 748                                                 debug_print("SIGKILL'ing gpg\n");
 749                                                 kill(pid, SIGKILL);
 750                                                 break;
 751                                         }
 752                                 } while(1);
 753                         }
 754                         if (res == 0) {
 755                                 alertpanel_notice(_("Key exported."));
 756                         } else {
 757                                 alertpanel_error(_("Couldn't export key."));
 758                         }
 759                         g_free(cmd);
 760 #else
 761                         alertpanel_error(_("Key export isn't implemented in Windows."));
 762 #endif
 763                 }
 764         }
 765         prefs_gpg_get_config()->gpg_ask_create_key = FALSE;
 766         prefs_gpg_save_config();
 767         gpgme_release(ctx);
 768 }
 769
 770 gboolean sgpgme_has_secret_key(void)
 771 {
 772         gpgme_error_t err = 0;
 773         gpgme_ctx_t ctx;
 774         gpgme_key_t key;
 775
 776         err = gpgme_new (&ctx);
 777         if (err) {
 778                 debug_print("err : %s\n", gpgme_strerror(err));
 779                 return TRUE;
 780         }
 781         err = gpgme_op_keylist_start(ctx, NULL, TRUE);
 782         if (!err)
 783                 err = gpgme_op_keylist_next(ctx, &key);
 784         gpgme_op_keylist_end(ctx);
 785         gpgme_release(ctx);
 786         if (gpg_err_code(err) == GPG_ERR_EOF)
 787                 return FALSE;
 788         else
 789                 return TRUE;
 790 }
 791
 792 void sgpgme_check_create_key(void)
 793 {
 794         if (prefs_gpg_get_config()->gpg_ask_create_key &&
 795             !sgpgme_has_secret_key()) {
 796                 sgpgme_create_secret_key(NULL, TRUE);
 797         } else {
 798                 prefs_gpg_get_config()->gpg_ask_create_key = FALSE;
 799                 prefs_gpg_save_config();
 800         }
 801 }
 802 #endif /* USE_GPGME */