src/plugins/pgpcore/sgpgme.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2006 Hiroyuki Yamamoto & the Sylpheed-Claws 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
  75         return status;
  76 }
  77
  78 SignatureStatus sgpgme_sigstat_gpgme_to_privacy(gpgme_ctx_t ctx, gpgme_verify_result_t status)
  79 {
  80         unsigned long validity = 0;
  81         gpgme_signature_t sig = NULL;
  82
  83         if (GPOINTER_TO_INT(status) == -GPG_ERR_SYSTEM_ERROR) {
  84                 debug_print("system error\n");
  85                 return SIGNATURE_CHECK_FAILED;
  86         }
  87
  88         if (status == NULL) {
  89                 debug_print("status == NULL\n");
  90                 return SIGNATURE_UNCHECKED;
  91         }
  92         sig = status->signatures;
  93
  94         if (sig == NULL) {
  95                 debug_print("sig == NULL\n");
  96                 return SIGNATURE_UNCHECKED;
  97         }
  98         validity = sig->validity;
  99
 100         debug_print("err code %d\n", gpg_err_code(sig->status));
 101         switch (gpg_err_code(sig->status)) {
 102         case GPG_ERR_NO_ERROR:
 103                 switch (gpg_err_code(sig->validity)) {
 104                 case GPGME_VALIDITY_NEVER:
 105                         return SIGNATURE_INVALID;
 106                 case GPGME_VALIDITY_UNKNOWN:
 107                 case GPGME_VALIDITY_UNDEFINED:
 108                 case GPGME_VALIDITY_MARGINAL:
 109                 case GPGME_VALIDITY_FULL:
 110                 case GPGME_VALIDITY_ULTIMATE:
 111                         return SIGNATURE_OK;
 112                 default:
 113                         return SIGNATURE_CHECK_FAILED;
 114                 }
 115         case GPG_ERR_SIG_EXPIRED:
 116         case GPG_ERR_KEY_EXPIRED:
 117                 return SIGNATURE_WARN;
 118         case GPG_ERR_BAD_SIGNATURE:
 119                 return SIGNATURE_INVALID;
 120         case GPG_ERR_NO_PUBKEY:
 121                 return SIGNATURE_CHECK_FAILED;
 122         default:
 123                 return SIGNATURE_CHECK_FAILED;
 124         }
 125         return SIGNATURE_CHECK_FAILED;
 126 }
 127
 128 static const gchar *get_validity_str(unsigned long validity)
 129 {
 130         switch (gpg_err_code(validity)) {
 131         case GPGME_VALIDITY_UNKNOWN:
 132                 return _("Unknown");
 133         case GPGME_VALIDITY_UNDEFINED:
 134                 return _("Undefined");
 135         case GPGME_VALIDITY_NEVER:
 136                 return _("Never");
 137         case GPGME_VALIDITY_MARGINAL:
 138                 return _("Marginal");
 139         case GPGME_VALIDITY_FULL:
 140                 return _("Full");
 141         case GPGME_VALIDITY_ULTIMATE:
 142                 return _("Ultimate");
 143         default:
 144                 return _("Error");
 145         }
 146 }
 147
 148 static gchar *extract_name(const char *uid)
 149 {
 150         if (uid == NULL)
 151                 return NULL;
 152         if (!strncmp(uid, "CN=", 3)) {
 153                 gchar *result = g_strdup(uid+3);
 154                 if (strstr(result, ","))
 155                         *(strstr(result, ",")) = '\0';
 156                 return result;
 157         } else if (strstr(uid, ",CN=")) {
 158                 gchar *result = g_strdup(strstr(uid, ",CN=")+4);
 159                 if (strstr(result, ","))
 160                         *(strstr(result, ",")) = '\0';
 161                 return result;
 162         } else {
 163                 return g_strdup(uid);
 164         }
 165 }
 166 gchar *sgpgme_sigstat_info_short(gpgme_ctx_t ctx, gpgme_verify_result_t status)
 167 {
 168         gpgme_signature_t sig = NULL;
 169         gchar *uname = NULL;
 170         gpgme_key_t key;
 171         gchar *result = NULL;
 172         gpgme_error_t err = 0;
 173         static gboolean warned = FALSE;
 174
 175         if (GPOINTER_TO_INT(status) == -GPG_ERR_SYSTEM_ERROR) {
 176                 return g_strdup_printf(_("The signature can't be checked - %s"), privacy_get_error());
 177         }
 178
 179         if (status == NULL) {
 180                 return g_strdup(_("The signature has not been checked."));
 181         }
 182         sig = status->signatures;
 183         if (sig == NULL) {
 184                 return g_strdup(_("The signature has not been checked."));
 185         }
 186
 187         err = gpgme_get_key(ctx, sig->fpr, &key, 0);
 188         if (gpg_err_code(err) == GPG_ERR_NO_AGENT) {
 189                 if (!warned)
 190                         alertpanel_error(_("PGP Core: Can't get key - no gpg-agent running."));
 191                 else
 192                         g_warning(_("PGP Core: Can't get key - no gpg-agent running."));
 193                 warned = TRUE;
 194         }
 195         if (key)
 196                 uname = extract_name(key->uids->uid);
 197         else
 198                 uname = g_strdup("<?>");
 199         switch (gpg_err_code(sig->status)) {
 200         case GPG_ERR_NO_ERROR:
 201                 switch (gpg_err_code(sig->validity)) {
 202                 case GPGME_VALIDITY_MARGINAL:
 203                 case GPGME_VALIDITY_FULL:
 204                 case GPGME_VALIDITY_ULTIMATE:
 205                         result = g_strdup_printf(_("Good signature from %s."), uname);
 206                         break;
 207                 case GPGME_VALIDITY_UNKNOWN:
 208                 case GPGME_VALIDITY_UNDEFINED:
 209                 case GPGME_VALIDITY_NEVER:
 210                 default:
 211                         result = g_strdup_printf(_("Good signature (untrusted) from %s."), uname);
 212                         break;
 213                 }
 214                 break;
 215         case GPG_ERR_SIG_EXPIRED:
 216                 result = g_strdup_printf(_("Expired signature from %s."), uname);
 217                 break;
 218         case GPG_ERR_KEY_EXPIRED:
 219                 result = g_strdup_printf(_("Expired key from %s."), uname);
 220                 break;
 221         case GPG_ERR_BAD_SIGNATURE:
 222                 result = g_strdup_printf(_("Bad signature from %s."), uname);
 223                 break;
 224         case GPG_ERR_NO_PUBKEY: {
 225                 gchar *id = g_strdup(sig->fpr + strlen(sig->fpr)-8);
 226                 result = g_strdup_printf(_("Key 0x%s not available to verify this signature."), id);
 227                 g_free(id);
 228                 break;
 229                 }
 230         default:
 231                 result = g_strdup(_("The signature has not been checked."));
 232                 break;
 233         }
 234         if (result == NULL)
 235                 result = g_strdup(_("Error"));
 236         g_free(uname);
 237         return result;
 238 }
 239
 240 gchar *sgpgme_sigstat_info_full(gpgme_ctx_t ctx, gpgme_verify_result_t status)
 241 {
 242         gint i = 0;
 243         gchar *ret;
 244         GString *siginfo;
 245         gpgme_signature_t sig = status->signatures;
 246
 247         siginfo = g_string_sized_new(64);
 248         while (sig) {
 249                 gpgme_user_id_t user = NULL;
 250                 gpgme_key_t key;
 251
 252                 const gchar *keytype, *keyid, *uid;
 253
 254                 gpgme_get_key(ctx, sig->fpr, &key, 0);
 255
 256                 if (key) {
 257                         user = key->uids;
 258                         keytype = gpgme_pubkey_algo_name(
 259                                         key->subkeys->pubkey_algo);
 260                         keyid = key->subkeys->keyid;
 261                         uid = user->uid;
 262                 } else {
 263                         keytype = "?";
 264                         keyid = "?";
 265                         uid = "?";
 266                 }
 267                 g_string_append_printf(siginfo,
 268                         _("Signature made using %s key ID %s\n"),
 269                         keytype, keyid);
 270
 271                 switch (gpg_err_code(sig->status)) {
 272                 case GPG_ERR_NO_ERROR:
 273                 case GPG_ERR_KEY_EXPIRED:
 274                         g_string_append_printf(siginfo,
 275                                 _("Good signature from \"%s\" (Trust: %s)\n"),
 276                                 uid, get_validity_str(sig->validity));
 277                         break;
 278                 case GPG_ERR_SIG_EXPIRED:
 279                         g_string_append_printf(siginfo,
 280                                 _("Expired signature from \"%s\"\n"),
 281                                 uid);
 282                         break;
 283                 case GPG_ERR_BAD_SIGNATURE:
 284                         g_string_append_printf(siginfo,
 285                                 _("BAD signature from \"%s\"\n"),
 286                                 uid);
 287                         break;
 288                 default:
 289                         break;
 290                 }
 291                 if (sig->status != GPG_ERR_BAD_SIGNATURE) {
 292                         gint j = 1;
 293                         user = user ? user->next : NULL;
 294                         while (user != NULL) {
 295                                 g_string_append_printf(siginfo,
 296                                         _("                aka \"%s\"\n"),
 297                                         user->uid);
 298                                 j++;
 299                                 user = user->next;
 300                         }
 301                         g_string_append_printf(siginfo,
 302                                 _("Primary key fingerprint: %s\n"),
 303                                 sig ? sig->fpr: "?");
 304 #ifdef HAVE_GPGME_PKA_TRUST
 305                         if (sig->pka_trust == 1 && sig->pka_address) {
 306                                 g_string_append_printf(siginfo,
 307                                    _("WARNING: Signer's address \"%s\" "
 308                                       "does not match DNS entry\n"),
 309                                    sig->pka_address);
 310                         }
 311                         else if (sig->pka_trust == 2 && sig->pka_address) {
 312                                 g_string_append_printf(siginfo,
 313                                    _("Verified signer's address is \"%s\"\n"),
 314                                    sig->pka_address);
 315                                 /* FIXME: Compare the address to the
 316                                  * From: address.  */
 317                         }
 318 #endif /*HAVE_GPGME_PKA_TRUST*/
 319                 }
 320
 321                 g_string_append(siginfo, "\n");
 322                 i++;
 323                 sig = sig->next;
 324         }
 325
 326         ret = siginfo->str;
 327         g_string_free(siginfo, FALSE);
 328         return ret;
 329 }
 330
 331 gpgme_data_t sgpgme_data_from_mimeinfo(MimeInfo *mimeinfo)
 332 {
 333         gpgme_data_t data = NULL;
 334         gpgme_error_t err;
 335         FILE *fp = g_fopen(mimeinfo->data.filename, "rb");
 336         gchar *tmp_file = NULL;
 337
 338         if (!fp)
 339                 return NULL;
 340
 341         tmp_file = get_tmp_file();
 342         copy_file_part(fp, mimeinfo->offset, mimeinfo->length, tmp_file);
 343         fclose(fp);
 344         fp = NULL;
 345         debug_print("tmp file %s\n", tmp_file);
 346
 347         err = gpgme_data_new_from_file(&data, tmp_file, 1);
 348         g_unlink(tmp_file);
 349         g_free(tmp_file);
 350
 351         debug_print("data %p (%d %d)\n", (void *)&data, mimeinfo->offset, mimeinfo->length);
 352         if (err) {
 353                 debug_print ("gpgme_data_new_from_file failed: %s\n",
 354                              gpgme_strerror (err));
 355                 privacy_set_error(_("Couldn't get data from message, %s"), gpgme_strerror(err));
 356                 return NULL;
 357         }
 358         return data;
 359 }
 360
 361 gpgme_data_t sgpgme_decrypt_verify(gpgme_data_t cipher, gpgme_verify_result_t *status, gpgme_ctx_t ctx)
 362 {
 363         struct passphrase_cb_info_s info;
 364         gpgme_data_t plain;
 365         gpgme_error_t err;
 366
 367         memset (&info, 0, sizeof info);
 368
 369         if ((err = gpgme_data_new(&plain)) != GPG_ERR_NO_ERROR) {
 370                 gpgme_release(ctx);
 371                 privacy_set_error(_("Couldn't initialize data, %s"), gpgme_strerror(err));
 372                 return NULL;
 373         }
 374
 375         if (gpgme_get_protocol(ctx) == GPGME_PROTOCOL_OpenPGP) {
 376                 if (!getenv("GPG_AGENT_INFO")) {
 377                         info.c = ctx;
 378                         gpgme_set_passphrase_cb (ctx, gpgmegtk_passphrase_cb, &info);
 379                 }
 380         } else {
 381                 info.c = ctx;
 382                 gpgme_set_passphrase_cb (ctx, NULL, &info);
 383         }
 384
 385
 386         if (gpgme_get_protocol(ctx) == GPGME_PROTOCOL_OpenPGP) {
 387                 err = gpgme_op_decrypt_verify(ctx, cipher, plain);
 388                 if (err != GPG_ERR_NO_ERROR) {
 389                         debug_print("can't decrypt (%s)\n", gpgme_strerror(err));
 390                         privacy_set_error("%s", gpgme_strerror(err));
 391                         gpgmegtk_free_passphrase();
 392                         gpgme_data_release(plain);
 393                         return NULL;
 394                 }
 395
 396                 err = gpgme_data_rewind(plain);
 397                 if (err) {
 398                         debug_print("can't seek (%d %d %s)\n", err, errno, strerror(errno));
 399                 }
 400
 401                 debug_print("decrypted.\n");
 402                 *status = gpgme_op_verify_result (ctx);
 403         } else {
 404                 err = gpgme_op_decrypt(ctx, cipher, plain);
 405                 if (err != GPG_ERR_NO_ERROR) {
 406                         debug_print("can't decrypt (%s)\n", gpgme_strerror(err));
 407                         gpgmegtk_free_passphrase();
 408                         gpgme_data_release(plain);
 409                         return NULL;
 410                 }
 411
 412                 err = gpgme_data_rewind(plain);
 413                 if (err) {
 414                         debug_print("can't seek (%d %d %s)\n", err, errno, strerror(errno));
 415                 }
 416
 417                 debug_print("decrypted.\n");
 418                 *status = gpgme_op_verify_result (ctx);
 419         }
 420         return plain;
 421 }
 422
 423 gchar *sgpgme_get_encrypt_data(GSList *recp_names, gpgme_protocol_t proto)
 424 {
 425         SelectionResult result = KEY_SELECTION_CANCEL;
 426         gpgme_key_t *keys = gpgmegtk_recipient_selection(recp_names, &result,
 427                                 proto);
 428         gchar *ret = NULL;
 429         int i = 0;
 430
 431         if (!keys) {
 432                 if (result == KEY_SELECTION_DONT)
 433                         return g_strdup("_DONT_ENCRYPT_");
 434                 else
 435                         return NULL;
 436         }
 437         while (keys[i]) {
 438                 gpgme_subkey_t skey = keys[i]->subkeys;
 439                 gchar *fpr = skey->fpr;
 440                 gchar *tmp = NULL;
 441                 debug_print("adding %s\n", fpr);
 442                 tmp = g_strconcat(ret?ret:"", fpr, " ", NULL);
 443                 g_free(ret);
 444                 ret = tmp;
 445                 i++;
 446         }
 447         return ret;
 448 }
 449
 450 gboolean sgpgme_setup_signers(gpgme_ctx_t ctx, PrefsAccount *account)
 451 {
 452         GPGAccountConfig *config;
 453
 454         gpgme_signers_clear(ctx);
 455
 456         config = prefs_gpg_account_get_config(account);
 457
 458         switch(config->sign_key) {
 459         case SIGN_KEY_DEFAULT:
 460                 debug_print("using default gnupg key\n");
 461                 break;
 462         case SIGN_KEY_BY_FROM:
 463                 debug_print("using key for %s\n", account->address);
 464                 break;
 465         case SIGN_KEY_CUSTOM:
 466                 debug_print("using key for %s\n", config->sign_key_id);
 467                 break;
 468         }
 469
 470         if (config->sign_key != SIGN_KEY_DEFAULT) {
 471                 gchar *keyid;
 472                 gpgme_key_t key, key2;
 473                 gpgme_error_t err;
 474
 475                 if (config->sign_key == SIGN_KEY_BY_FROM)
 476                         keyid = account->address;
 477                 else if (config->sign_key == SIGN_KEY_CUSTOM)
 478                         keyid = config->sign_key_id;
 479                 else
 480                         goto bail;
 481
 482                 err = gpgme_op_keylist_start(ctx, keyid, 1);
 483                 if (!err)
 484                         err = gpgme_op_keylist_next(ctx, &key);
 485                 if (err) {
 486                         g_warning("setup_signers start: %s", gpgme_strerror(err));
 487                         privacy_set_error(_("Secret key not found (%s)"), gpgme_strerror(err));
 488                         goto bail;
 489                 }
 490
 491                 err = gpgme_op_keylist_next(ctx, &key2);
 492                 if (!err) {
 493                         g_warning("ambiguous specification of secret key '%s'\n",
 494                                 keyid);
 495                         privacy_set_error(_("Secret key specification is ambiguous"));
 496                         goto bail;
 497                 }
 498
 499                 gpgme_op_keylist_end(ctx);
 500                 err = gpgme_signers_add(ctx, key);
 501                 gpgme_key_release(key);
 502
 503                 if (err) {
 504                         g_warning("error adding secret key: %s\n", gpgme_strerror(err));
 505                         privacy_set_error(_("Error setting secret key: %s"), gpgme_strerror(err));
 506                         goto bail;
 507                 }
 508         }
 509
 510         prefs_gpg_account_free_config(config);
 511
 512         return TRUE;
 513 bail:
 514         prefs_gpg_account_free_config(config);
 515         return FALSE;
 516 }
 517
 518 void sgpgme_init()
 519 {
 520         gpgme_engine_info_t engineInfo;
 521         if (gpgme_check_version("1.0.0")) {
 522 #ifdef LC_CTYPE
 523                 gpgme_set_locale(NULL, LC_CTYPE, setlocale(LC_CTYPE, NULL));
 524 #endif
 525 #ifdef LC_MESSAGES
 526                 gpgme_set_locale(NULL, LC_MESSAGES, setlocale(LC_MESSAGES, NULL));
 527 #endif
 528                 if (!gpgme_get_engine_info(&engineInfo)) {
 529                         while (engineInfo) {
 530                                 debug_print("GpgME Protocol: %s\n"
 531                                             "Version: %s (req %s)\n"
 532                                             "Executable: %s\n",
 533                                         gpgme_get_protocol_name(engineInfo->protocol),
 534                                         engineInfo->version ? engineInfo->version:"???",
 535                                         engineInfo->req_version ? engineInfo->req_version:"???",
 536                                         engineInfo->file_name ? engineInfo->file_name:"???");
 537                                 if (engineInfo->protocol == GPGME_PROTOCOL_OpenPGP
 538                                 &&  gpgme_engine_check_version(engineInfo->protocol) !=
 539                                         GPG_ERR_NO_ERROR) {
 540                                         if (engineInfo->file_name && !engineInfo->version) {
 541                                                 alertpanel_error(_("Gpgme protocol '%s' is unusable: "
 542                                                                    "Engine '%s' isn't installed properly."),
 543                                                                    gpgme_get_protocol_name(engineInfo->protocol),
 544                                                                    engineInfo->file_name);
 545                                         } else if (engineInfo->file_name && engineInfo->version
 546                                           && engineInfo->req_version) {
 547                                                 alertpanel_error(_("Gpgme protocol '%s' is unusable: "
 548                                                                    "Engine '%s' version %s is installed, "
 549                                                                    "but version %s is required.\n"),
 550                                                                    gpgme_get_protocol_name(engineInfo->protocol),
 551                                                                    engineInfo->file_name,
 552                                                                    engineInfo->version,
 553                                                                    engineInfo->req_version);
 554                                         } else {
 555                                                 alertpanel_error(_("Gpgme protocol '%s' is unusable "
 556                                                                    "(unknown problem)"),
 557                                                                    gpgme_get_protocol_name(engineInfo->protocol));
 558                                         }
 559                                 }
 560                                 engineInfo = engineInfo->next;
 561                         }
 562                 }
 563         } else {
 564                 sgpgme_disable_all();
 565
 566                 if (prefs_gpg_get_config()->gpg_warning) {
 567                         AlertValue val;
 568
 569                         val = alertpanel_full
 570                                 (_("Warning"),
 571                                  _("GnuPG is not installed properly, or needs "
 572                                  "to be upgraded.\n"
 573                                  "OpenPGP support disabled."),
 574                                  GTK_STOCK_CLOSE, NULL, NULL, TRUE, NULL,
 575                                  ALERT_WARNING, G_ALERTDEFAULT);
 576                         if (val & G_ALERTDISABLE)
 577                                 prefs_gpg_get_config()->gpg_warning = FALSE;
 578                 }
 579         }
 580 }
 581
 582 void sgpgme_done()
 583 {
 584         gpgmegtk_free_passphrase();
 585 }
 586
 587 void sgpgme_create_secret_key(PrefsAccount *account, gboolean ask_create)
 588 {
 589         AlertValue val = G_ALERTDEFAULT;
 590         gchar *key_parms = NULL;
 591         gchar *name = NULL;
 592         gchar *email = NULL;
 593         gchar *passphrase = NULL, *passphrase_second = NULL;
 594         gint prev_bad = 0;
 595         gchar *tmp = NULL;
 596         gpgme_error_t err = 0;
 597         gpgme_ctx_t ctx;
 598         GtkWidget *window = NULL;
 599         gpgme_genkey_result_t key;
 600
 601         if (account == NULL)
 602                 account = account_get_default();
 603
 604         if (account->address == NULL) {
 605                 alertpanel_error(_("You have to save the account's information with \"OK\" "
 606                                    "before being able to generate a key pair.\n"));
 607                 return;
 608         }
 609         if (ask_create) {
 610                 val = alertpanel(_("No PGP key found"),
 611                                 _("Sylpheed-Claws did not find a secret PGP key, "
 612                                   "which means that you won't be able to sign "
 613                                   "emails or receive encrypted emails.\n"
 614                                   "Do you want to create a new key pair now?"),
 615                                   GTK_STOCK_NO, "+" GTK_STOCK_YES, NULL);
 616                 if (val == G_ALERTDEFAULT) {
 617                         prefs_gpg_get_config()->gpg_ask_create_key = FALSE;
 618                         prefs_gpg_save_config();
 619                         return;
 620                 }
 621         }
 622
 623         if (account->name) {
 624                 name = g_strdup(account->name);
 625         } else {
 626                 name = g_strdup(account->address);
 627         }
 628         email = g_strdup(account->address);
 629         tmp = g_strdup_printf("%s <%s>", account->name?account->name:account->address, account->address);
 630 again:
 631         passphrase = passphrase_mbox(tmp, NULL, prev_bad, 1);
 632         if (passphrase == NULL) {
 633                 g_free(tmp);
 634                 g_free(email);
 635                 g_free(name);
 636                 return;
 637         }
 638         passphrase_second = passphrase_mbox(tmp, NULL, 0, 2);
 639         if (passphrase_second == NULL) {
 640                 g_free(tmp);
 641                 g_free(email);
 642                 g_free(passphrase);
 643                 g_free(name);
 644                 return;
 645         }
 646         if (strcmp(passphrase, passphrase_second)) {
 647                 g_free(passphrase);
 648                 g_free(passphrase_second);
 649                 prev_bad = 1;
 650                 goto again;
 651         }
 652
 653         key_parms = g_strdup_printf("<GnupgKeyParms format=\"internal\">\n"
 654                                         "Key-Type: DSA\n"
 655                                         "Key-Length: 1024\n"
 656                                         "Subkey-Type: ELG-E\n"
 657                                         "Subkey-Length: 2048\n"
 658                                         "Name-Real: %s\n"
 659                                         "Name-Email: %s\n"
 660                                         "Expire-Date: 0\n"
 661                                         "%s%s%s"
 662                                         "</GnupgKeyParms>\n",
 663                                         name, email,
 664                                         strlen(passphrase)?"Passphrase: ":"",
 665                                         passphrase,
 666                                         strlen(passphrase)?"\n":"");
 667 #ifndef G_PLATFORM_WIN32
 668         if (mlock(passphrase, strlen(passphrase)) == -1)
 669                 debug_print("couldn't lock passphrase\n");
 670         if (mlock(passphrase_second, strlen(passphrase_second)) == -1)
 671                 debug_print("couldn't lock passphrase2\n");
 672 #endif
 673         g_free(tmp);
 674         g_free(email);
 675         g_free(name);
 676         g_free(passphrase_second);
 677         g_free(passphrase);
 678
 679         err = gpgme_new (&ctx);
 680         if (err) {
 681                 alertpanel_error(_("Couldn't generate a new key pair: %s"),
 682                                  gpgme_strerror(err));
 683                 g_free(key_parms);
 684                 return;
 685         }
 686
 687
 688         window = label_window_create(_("Generating your new key pair... Please move the mouse "
 689                               "around to help generate entropy..."));
 690
 691         err = gpgme_op_genkey(ctx, key_parms, NULL, NULL);
 692         g_free(key_parms);
 693
 694         gtk_widget_destroy(window);
 695
 696         if (err) {
 697                 alertpanel_error(_("Couldn't generate a new key pair: %s"), gpgme_strerror(err));
 698                 gpgme_release(ctx);
 699                 return;
 700         }
 701         key = gpgme_op_genkey_result(ctx);
 702         if (key == NULL) {
 703                 alertpanel_error(_("Couldn't generate a new key pair: unknown error"));
 704                 gpgme_release(ctx);
 705                 return;
 706         } else {
 707                 gchar *buf = g_strdup_printf(_("Your new key pair has been generated. "
 708                                     "Its fingerprint is:\n%s\n\nDo you want to export it "
 709                                     "to a keyserver?"),
 710                                     key->fpr ? key->fpr:"null");
 711                 AlertValue val = alertpanel(_("Key generated"), buf,
 712                                   GTK_STOCK_NO, "+" GTK_STOCK_YES, NULL);
 713                 g_free(buf);
 714                 if (val == G_ALERTALTERNATE) {
 715 #ifndef G_OS_WIN32
 716                         gchar *cmd = g_strdup_printf("gpg --no-tty --send-keys %s", key->fpr);
 717                         int res = 0;
 718                         pid_t pid = 0;
 719                         pid = fork();
 720                         if (pid == -1) {
 721                                 res = -1;
 722                         } else if (pid == 0) {
 723                                 /* son */
 724                                 res = system(cmd);
 725                                 res = WEXITSTATUS(res);
 726                                 _exit(res);
 727                         } else {
 728                                 int status = 0;
 729                                 time_t start_wait = time(NULL);
 730                                 res = -1;
 731                                 do {
 732                                         if (waitpid(pid, &status, WNOHANG) == 0 || !WIFEXITED(status)) {
 733                                                 usleep(200000);
 734                                         } else {
 735                                                 res = WEXITSTATUS(status);
 736                                                 break;
 737                                         }
 738                                         if (time(NULL) - start_wait > 5) {
 739                                                 debug_print("SIGTERM'ing gpg\n");
 740                                                 kill(pid, SIGTERM);
 741                                         }
 742                                         if (time(NULL) - start_wait > 6) {
 743                                                 debug_print("SIGKILL'ing gpg\n");
 744                                                 kill(pid, SIGKILL);
 745                                                 break;
 746                                         }
 747                                 } while(1);
 748                         }
 749                         if (res == 0) {
 750                                 alertpanel_notice(_("Key exported."));
 751                         } else {
 752                                 alertpanel_error(_("Couldn't export key."));
 753                         }
 754                         g_free(cmd);
 755 #else
 756                         alertpanel_error(_("Key export isn't implemented in Windows."));
 757 #endif
 758                 }
 759         }
 760         prefs_gpg_get_config()->gpg_ask_create_key = FALSE;
 761         prefs_gpg_save_config();
 762         gpgme_release(ctx);
 763 }
 764
 765 gboolean sgpgme_has_secret_key(void)
 766 {
 767         gpgme_error_t err = 0;
 768         gpgme_ctx_t ctx;
 769         gpgme_key_t key;
 770
 771         err = gpgme_new (&ctx);
 772         if (err) {
 773                 debug_print("err : %s\n", gpgme_strerror(err));
 774                 return TRUE;
 775         }
 776         err = gpgme_op_keylist_start(ctx, NULL, TRUE);
 777         if (!err)
 778                 err = gpgme_op_keylist_next(ctx, &key);
 779         gpgme_op_keylist_end(ctx);
 780         gpgme_release(ctx);
 781         if (gpg_err_code(err) == GPG_ERR_EOF)
 782                 return FALSE;
 783         else
 784                 return TRUE;
 785 }
 786
 787 void sgpgme_check_create_key(void)
 788 {
 789         if (prefs_gpg_get_config()->gpg_ask_create_key &&
 790             !sgpgme_has_secret_key()) {
 791                 sgpgme_create_secret_key(NULL, TRUE);
 792         } else {
 793                 prefs_gpg_get_config()->gpg_ask_create_key = FALSE;
 794                 prefs_gpg_save_config();
 795         }
 796 }
 797 #endif /* USE_GPGME */