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 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         if (sig->fpr == NULL) {
 191                 g_warning(_("PGP Core: Can't get key fingerprint."));
 192                 return g_strdup(_("PGP Core: Can't get key fingerprint."));
 193         }
 194
 195         err = gpgme_get_key(ctx, sig->fpr, &key, 0);
 196         if (gpg_err_code(err) == GPG_ERR_NO_AGENT) {
 197                 if (!warned)
 198                         alertpanel_error(_("PGP Core: Can't get key - no gpg-agent running."));
 199                 else
 200                         g_warning(_("PGP Core: Can't get key - no gpg-agent running."));
 201                 warned = TRUE;
 202         }
 203         if (key)
 204                 uname = extract_name(key->uids->uid);
 205         else
 206                 uname = g_strdup("<?>");
 207         switch (gpg_err_code(sig->status)) {
 208         case GPG_ERR_NO_ERROR:
 209                 switch (gpg_err_code(sig->validity)) {
 210                 case GPGME_VALIDITY_MARGINAL:
 211                 case GPGME_VALIDITY_FULL:
 212                 case GPGME_VALIDITY_ULTIMATE:
 213                         result = g_strdup_printf(_("Good signature from %s."), uname);
 214                         break;
 215                 case GPGME_VALIDITY_UNKNOWN:
 216                 case GPGME_VALIDITY_UNDEFINED:
 217                 case GPGME_VALIDITY_NEVER:
 218                 default:
 219                         result = g_strdup_printf(_("Good signature (untrusted) from %s."), uname);
 220                         break;
 221                 }
 222                 break;
 223         case GPG_ERR_SIG_EXPIRED:
 224                 result = g_strdup_printf(_("Expired signature from %s."), uname);
 225                 break;
 226         case GPG_ERR_KEY_EXPIRED:
 227                 result = g_strdup_printf(_("Expired key from %s."), uname);
 228                 break;
 229         case GPG_ERR_BAD_SIGNATURE:
 230                 result = g_strdup_printf(_("Bad signature from %s."), uname);
 231                 break;
 232         case GPG_ERR_NO_PUBKEY: {
 233                 gchar *id = g_strdup(sig->fpr + strlen(sig->fpr)-8);
 234                 result = g_strdup_printf(_("Key 0x%s not available to verify this signature."), id);
 235                 g_free(id);
 236                 break;
 237                 }
 238         default:
 239                 result = g_strdup(_("The signature has not been checked."));
 240                 break;
 241         }
 242         if (result == NULL)
 243                 result = g_strdup(_("Error"));
 244         g_free(uname);
 245         return result;
 246 }
 247
 248 gchar *sgpgme_sigstat_info_full(gpgme_ctx_t ctx, gpgme_verify_result_t status)
 249 {
 250         gint i = 0;
 251         gchar *ret;
 252         GString *siginfo;
 253         gpgme_signature_t sig = status->signatures;
 254
 255         siginfo = g_string_sized_new(64);
 256         while (sig) {
 257                 gpgme_user_id_t user = NULL;
 258                 gpgme_key_t key;
 259
 260                 const gchar *keytype, *keyid, *uid;
 261
 262                 gpgme_get_key(ctx, sig->fpr, &key, 0);
 263
 264                 if (key) {
 265                         user = key->uids;
 266                         keytype = gpgme_pubkey_algo_name(
 267                                         key->subkeys->pubkey_algo);
 268                         keyid = key->subkeys->keyid;
 269                         uid = user->uid;
 270                 } else {
 271                         keytype = "?";
 272                         keyid = "?";
 273                         uid = "?";
 274                 }
 275                 g_string_append_printf(siginfo,
 276                         _("Signature made using %s key ID %s\n"),
 277                         keytype, keyid);
 278
 279                 switch (gpg_err_code(sig->status)) {
 280                 case GPG_ERR_NO_ERROR:
 281                 case GPG_ERR_KEY_EXPIRED:
 282                         g_string_append_printf(siginfo,
 283                                 _("Good signature from \"%s\" (Trust: %s)\n"),
 284                                 uid, get_validity_str(sig->validity));
 285                         break;
 286                 case GPG_ERR_SIG_EXPIRED:
 287                         g_string_append_printf(siginfo,
 288                                 _("Expired signature from \"%s\"\n"),
 289                                 uid);
 290                         break;
 291                 case GPG_ERR_BAD_SIGNATURE:
 292                         g_string_append_printf(siginfo,
 293                                 _("BAD signature from \"%s\"\n"),
 294                                 uid);
 295                         break;
 296                 default:
 297                         break;
 298                 }
 299                 if (sig->status != GPG_ERR_BAD_SIGNATURE) {
 300                         gint j = 1;
 301                         user = user ? user->next : NULL;
 302                         while (user != NULL) {
 303                                 g_string_append_printf(siginfo,
 304                                         _("                aka \"%s\"\n"),
 305                                         user->uid);
 306                                 j++;
 307                                 user = user->next;
 308                         }
 309                         g_string_append_printf(siginfo,
 310                                 _("Primary key fingerprint: %s\n"),
 311                                 sig ? sig->fpr: "?");
 312 #ifdef HAVE_GPGME_PKA_TRUST
 313                         if (sig->pka_trust == 1 && sig->pka_address) {
 314                                 g_string_append_printf(siginfo,
 315                                    _("WARNING: Signer's address \"%s\" "
 316                                       "does not match DNS entry\n"),
 317                                    sig->pka_address);
 318                         }
 319                         else if (sig->pka_trust == 2 && sig->pka_address) {
 320                                 g_string_append_printf(siginfo,
 321                                    _("Verified signer's address is \"%s\"\n"),
 322                                    sig->pka_address);
 323                                 /* FIXME: Compare the address to the
 324                                  * From: address.  */
 325                         }
 326 #endif /*HAVE_GPGME_PKA_TRUST*/
 327                 }
 328
 329                 g_string_append(siginfo, "\n");
 330                 i++;
 331                 sig = sig->next;
 332         }
 333
 334         ret = siginfo->str;
 335         g_string_free(siginfo, FALSE);
 336         return ret;
 337 }
 338
 339 gpgme_data_t sgpgme_data_from_mimeinfo(MimeInfo *mimeinfo)
 340 {
 341         gpgme_data_t data = NULL;
 342         gpgme_error_t err;
 343         FILE *fp = g_fopen(mimeinfo->data.filename, "rb");
 344         gchar *tmp_file = NULL;
 345
 346         if (!fp)
 347                 return NULL;
 348
 349         tmp_file = get_tmp_file();
 350         copy_file_part(fp, mimeinfo->offset, mimeinfo->length, tmp_file);
 351         fclose(fp);
 352         fp = NULL;
 353         debug_print("tmp file %s\n", tmp_file);
 354
 355         err = gpgme_data_new_from_file(&data, tmp_file, 1);
 356         g_unlink(tmp_file);
 357         g_free(tmp_file);
 358
 359         debug_print("data %p (%d %d)\n", (void *)&data, mimeinfo->offset, mimeinfo->length);
 360         if (err) {
 361                 debug_print ("gpgme_data_new_from_file failed: %s\n",
 362                              gpgme_strerror (err));
 363                 privacy_set_error(_("Couldn't get data from message, %s"), gpgme_strerror(err));
 364                 return NULL;
 365         }
 366         return data;
 367 }
 368
 369 gpgme_data_t sgpgme_decrypt_verify(gpgme_data_t cipher, gpgme_verify_result_t *status, gpgme_ctx_t ctx)
 370 {
 371         struct passphrase_cb_info_s info;
 372         gpgme_data_t plain;
 373         gpgme_error_t err;
 374
 375         memset (&info, 0, sizeof info);
 376
 377         if ((err = gpgme_data_new(&plain)) != GPG_ERR_NO_ERROR) {
 378                 gpgme_release(ctx);
 379                 privacy_set_error(_("Couldn't initialize data, %s"), gpgme_strerror(err));
 380                 return NULL;
 381         }
 382
 383         if (gpgme_get_protocol(ctx) == GPGME_PROTOCOL_OpenPGP) {
 384                 if (!getenv("GPG_AGENT_INFO")) {
 385                         info.c = ctx;
 386                         gpgme_set_passphrase_cb (ctx, gpgmegtk_passphrase_cb, &info);
 387                 }
 388         } else {
 389                 info.c = ctx;
 390                 gpgme_set_passphrase_cb (ctx, NULL, &info);
 391         }
 392
 393
 394         if (gpgme_get_protocol(ctx) == GPGME_PROTOCOL_OpenPGP) {
 395                 err = gpgme_op_decrypt_verify(ctx, cipher, plain);
 396                 if (err != GPG_ERR_NO_ERROR) {
 397                         debug_print("can't decrypt (%s)\n", gpgme_strerror(err));
 398                         privacy_set_error("%s", gpgme_strerror(err));
 399                         gpgmegtk_free_passphrase();
 400                         gpgme_data_release(plain);
 401                         return NULL;
 402                 }
 403
 404                 err = gpgme_data_rewind(plain);
 405                 if (err) {
 406                         debug_print("can't seek (%d %d %s)\n", err, errno, strerror(errno));
 407                 }
 408
 409                 debug_print("decrypted.\n");
 410                 *status = gpgme_op_verify_result (ctx);
 411         } else {
 412                 err = gpgme_op_decrypt(ctx, cipher, plain);
 413                 if (err != GPG_ERR_NO_ERROR) {
 414                         debug_print("can't decrypt (%s)\n", gpgme_strerror(err));
 415                         gpgmegtk_free_passphrase();
 416                         gpgme_data_release(plain);
 417                         return NULL;
 418                 }
 419
 420                 err = gpgme_data_rewind(plain);
 421                 if (err) {
 422                         debug_print("can't seek (%d %d %s)\n", err, errno, strerror(errno));
 423                 }
 424
 425                 debug_print("decrypted.\n");
 426                 *status = gpgme_op_verify_result (ctx);
 427         }
 428         return plain;
 429 }
 430
 431 gchar *sgpgme_get_encrypt_data(GSList *recp_names, gpgme_protocol_t proto)
 432 {
 433         SelectionResult result = KEY_SELECTION_CANCEL;
 434         gpgme_key_t *keys = gpgmegtk_recipient_selection(recp_names, &result,
 435                                 proto);
 436         gchar *ret = NULL;
 437         int i = 0;
 438
 439         if (!keys) {
 440                 if (result == KEY_SELECTION_DONT)
 441                         return g_strdup("_DONT_ENCRYPT_");
 442                 else
 443                         return NULL;
 444         }
 445         while (keys[i]) {
 446                 gpgme_subkey_t skey = keys[i]->subkeys;
 447                 gchar *fpr = skey->fpr;
 448                 gchar *tmp = NULL;
 449                 debug_print("adding %s\n", fpr);
 450                 tmp = g_strconcat(ret?ret:"", fpr, " ", NULL);
 451                 g_free(ret);
 452                 ret = tmp;
 453                 i++;
 454         }
 455         return ret;
 456 }
 457
 458 gboolean sgpgme_setup_signers(gpgme_ctx_t ctx, PrefsAccount *account)
 459 {
 460         GPGAccountConfig *config;
 461
 462         gpgme_signers_clear(ctx);
 463
 464         config = prefs_gpg_account_get_config(account);
 465
 466         switch(config->sign_key) {
 467         case SIGN_KEY_DEFAULT:
 468                 debug_print("using default gnupg key\n");
 469                 break;
 470         case SIGN_KEY_BY_FROM:
 471                 debug_print("using key for %s\n", account->address);
 472                 break;
 473         case SIGN_KEY_CUSTOM:
 474                 debug_print("using key for %s\n", config->sign_key_id);
 475                 break;
 476         }
 477
 478         if (config->sign_key != SIGN_KEY_DEFAULT) {
 479                 gchar *keyid;
 480                 gpgme_key_t key, key2;
 481                 gpgme_error_t err;
 482
 483                 if (config->sign_key == SIGN_KEY_BY_FROM)
 484                         keyid = account->address;
 485                 else if (config->sign_key == SIGN_KEY_CUSTOM)
 486                         keyid = config->sign_key_id;
 487                 else
 488                         goto bail;
 489
 490                 err = gpgme_op_keylist_start(ctx, keyid, 1);
 491                 if (!err)
 492                         err = gpgme_op_keylist_next(ctx, &key);
 493                 if (err) {
 494                         g_warning("setup_signers start: %s", gpgme_strerror(err));
 495                         privacy_set_error(_("Secret key not found (%s)"), gpgme_strerror(err));
 496                         goto bail;
 497                 }
 498
 499                 err = gpgme_op_keylist_next(ctx, &key2);
 500                 if (!err) {
 501                         g_warning("ambiguous specification of secret key '%s'\n",
 502                                 keyid);
 503                         privacy_set_error(_("Secret key specification is ambiguous"));
 504                         goto bail;
 505                 }
 506
 507                 gpgme_op_keylist_end(ctx);
 508                 err = gpgme_signers_add(ctx, key);
 509                 gpgme_key_release(key);
 510
 511                 if (err) {
 512                         g_warning("error adding secret key: %s\n", gpgme_strerror(err));
 513                         privacy_set_error(_("Error setting secret key: %s"), gpgme_strerror(err));
 514                         goto bail;
 515                 }
 516         }
 517
 518         prefs_gpg_account_free_config(config);
 519
 520         return TRUE;
 521 bail:
 522         prefs_gpg_account_free_config(config);
 523         return FALSE;
 524 }
 525
 526 void sgpgme_init()
 527 {
 528         gpgme_engine_info_t engineInfo;
 529         if (gpgme_check_version("1.0.0")) {
 530 #ifdef LC_CTYPE
 531                 gpgme_set_locale(NULL, LC_CTYPE, setlocale(LC_CTYPE, NULL));
 532 #endif
 533 #ifdef LC_MESSAGES
 534                 gpgme_set_locale(NULL, LC_MESSAGES, setlocale(LC_MESSAGES, NULL));
 535 #endif
 536                 if (!gpgme_get_engine_info(&engineInfo)) {
 537                         while (engineInfo) {
 538                                 debug_print("GpgME Protocol: %s\n"
 539                                             "Version: %s (req %s)\n"
 540                                             "Executable: %s\n",
 541                                         gpgme_get_protocol_name(engineInfo->protocol),
 542                                         engineInfo->version ? engineInfo->version:"???",
 543                                         engineInfo->req_version ? engineInfo->req_version:"???",
 544                                         engineInfo->file_name ? engineInfo->file_name:"???");
 545                                 if (engineInfo->protocol == GPGME_PROTOCOL_OpenPGP
 546                                 &&  gpgme_engine_check_version(engineInfo->protocol) !=
 547                                         GPG_ERR_NO_ERROR) {
 548                                         if (engineInfo->file_name && !engineInfo->version) {
 549                                                 alertpanel_error(_("Gpgme protocol '%s' is unusable: "
 550                                                                    "Engine '%s' isn't installed properly."),
 551                                                                    gpgme_get_protocol_name(engineInfo->protocol),
 552                                                                    engineInfo->file_name);
 553                                         } else if (engineInfo->file_name && engineInfo->version
 554                                           && engineInfo->req_version) {
 555                                                 alertpanel_error(_("Gpgme protocol '%s' is unusable: "
 556                                                                    "Engine '%s' version %s is installed, "
 557                                                                    "but version %s is required.\n"),
 558                                                                    gpgme_get_protocol_name(engineInfo->protocol),
 559                                                                    engineInfo->file_name,
 560                                                                    engineInfo->version,
 561                                                                    engineInfo->req_version);
 562                                         } else {
 563                                                 alertpanel_error(_("Gpgme protocol '%s' is unusable "
 564                                                                    "(unknown problem)"),
 565                                                                    gpgme_get_protocol_name(engineInfo->protocol));
 566                                         }
 567                                 }
 568                                 engineInfo = engineInfo->next;
 569                         }
 570                 }
 571         } else {
 572                 sgpgme_disable_all();
 573
 574                 if (prefs_gpg_get_config()->gpg_warning) {
 575                         AlertValue val;
 576
 577                         val = alertpanel_full
 578                                 (_("Warning"),
 579                                  _("GnuPG is not installed properly, or needs "
 580                                  "to be upgraded.\n"
 581                                  "OpenPGP support disabled."),
 582                                  GTK_STOCK_CLOSE, NULL, NULL, TRUE, NULL,
 583                                  ALERT_WARNING, G_ALERTDEFAULT);
 584                         if (val & G_ALERTDISABLE)
 585                                 prefs_gpg_get_config()->gpg_warning = FALSE;
 586                 }
 587         }
 588 }
 589
 590 void sgpgme_done()
 591 {
 592         gpgmegtk_free_passphrase();
 593 }
 594
 595 void sgpgme_create_secret_key(PrefsAccount *account, gboolean ask_create)
 596 {
 597         AlertValue val = G_ALERTDEFAULT;
 598         gchar *key_parms = NULL;
 599         gchar *name = NULL;
 600         gchar *email = NULL;
 601         gchar *passphrase = NULL, *passphrase_second = NULL;
 602         gint prev_bad = 0;
 603         gchar *tmp = NULL;
 604         gpgme_error_t err = 0;
 605         gpgme_ctx_t ctx;
 606         GtkWidget *window = NULL;
 607         gpgme_genkey_result_t key;
 608
 609         if (account == NULL)
 610                 account = account_get_default();
 611
 612         if (account->address == NULL) {
 613                 alertpanel_error(_("You have to save the account's information with \"OK\" "
 614                                    "before being able to generate a key pair.\n"));
 615                 return;
 616         }
 617         if (ask_create) {
 618                 val = alertpanel(_("No PGP key found"),
 619                                 _("Claws Mail did not find a secret PGP key, "
 620                                   "which means that you won't be able to sign "
 621                                   "emails or receive encrypted emails.\n"
 622                                   "Do you want to create a new key pair now?"),
 623                                   GTK_STOCK_NO, "+" GTK_STOCK_YES, NULL);
 624                 if (val == G_ALERTDEFAULT) {
 625                         prefs_gpg_get_config()->gpg_ask_create_key = FALSE;
 626                         prefs_gpg_save_config();
 627                         return;
 628                 }
 629         }
 630
 631         if (account->name) {
 632                 name = g_strdup(account->name);
 633         } else {
 634                 name = g_strdup(account->address);
 635         }
 636         email = g_strdup(account->address);
 637         tmp = g_strdup_printf("%s <%s>", account->name?account->name:account->address, account->address);
 638 again:
 639         passphrase = passphrase_mbox(tmp, NULL, prev_bad, 1);
 640         if (passphrase == NULL) {
 641                 g_free(tmp);
 642                 g_free(email);
 643                 g_free(name);
 644                 return;
 645         }
 646         passphrase_second = passphrase_mbox(tmp, NULL, 0, 2);
 647         if (passphrase_second == NULL) {
 648                 g_free(tmp);
 649                 g_free(email);
 650                 g_free(passphrase);
 651                 g_free(name);
 652                 return;
 653         }
 654         if (strcmp(passphrase, passphrase_second)) {
 655                 g_free(passphrase);
 656                 g_free(passphrase_second);
 657                 prev_bad = 1;
 658                 goto again;
 659         }
 660
 661         key_parms = g_strdup_printf("<GnupgKeyParms format=\"internal\">\n"
 662                                         "Key-Type: DSA\n"
 663                                         "Key-Length: 1024\n"
 664                                         "Subkey-Type: ELG-E\n"
 665                                         "Subkey-Length: 2048\n"
 666                                         "Name-Real: %s\n"
 667                                         "Name-Email: %s\n"
 668                                         "Expire-Date: 0\n"
 669                                         "%s%s%s"
 670                                         "</GnupgKeyParms>\n",
 671                                         name, email,
 672                                         strlen(passphrase)?"Passphrase: ":"",
 673                                         passphrase,
 674                                         strlen(passphrase)?"\n":"");
 675 #ifndef G_PLATFORM_WIN32
 676         if (mlock(passphrase, strlen(passphrase)) == -1)
 677                 debug_print("couldn't lock passphrase\n");
 678         if (mlock(passphrase_second, strlen(passphrase_second)) == -1)
 679                 debug_print("couldn't lock passphrase2\n");
 680 #endif
 681         g_free(tmp);
 682         g_free(email);
 683         g_free(name);
 684         g_free(passphrase_second);
 685         g_free(passphrase);
 686
 687         err = gpgme_new (&ctx);
 688         if (err) {
 689                 alertpanel_error(_("Couldn't generate a new key pair: %s"),
 690                                  gpgme_strerror(err));
 691                 g_free(key_parms);
 692                 return;
 693         }
 694
 695
 696         window = label_window_create(_("Generating your new key pair... Please move the mouse "
 697                               "around to help generate entropy..."));
 698
 699         err = gpgme_op_genkey(ctx, key_parms, NULL, NULL);
 700         g_free(key_parms);
 701
 702         gtk_widget_destroy(window);
 703
 704         if (err) {
 705                 alertpanel_error(_("Couldn't generate a new key pair: %s"), gpgme_strerror(err));
 706                 gpgme_release(ctx);
 707                 return;
 708         }
 709         key = gpgme_op_genkey_result(ctx);
 710         if (key == NULL) {
 711                 alertpanel_error(_("Couldn't generate a new key pair: unknown error"));
 712                 gpgme_release(ctx);
 713                 return;
 714         } else {
 715                 gchar *buf = g_strdup_printf(_("Your new key pair has been generated. "
 716                                     "Its fingerprint is:\n%s\n\nDo you want to export it "
 717                                     "to a keyserver?"),
 718                                     key->fpr ? key->fpr:"null");
 719                 AlertValue val = alertpanel(_("Key generated"), buf,
 720                                   GTK_STOCK_NO, "+" GTK_STOCK_YES, NULL);
 721                 g_free(buf);
 722                 if (val == G_ALERTALTERNATE) {
 723 #ifndef G_OS_WIN32
 724                         gchar *cmd = g_strdup_printf("gpg --no-tty --send-keys %s", key->fpr);
 725                         int res = 0;
 726                         pid_t pid = 0;
 727                         pid = fork();
 728                         if (pid == -1) {
 729                                 res = -1;
 730                         } else if (pid == 0) {
 731                                 /* son */
 732                                 res = system(cmd);
 733                                 res = WEXITSTATUS(res);
 734                                 _exit(res);
 735                         } else {
 736                                 int status = 0;
 737                                 time_t start_wait = time(NULL);
 738                                 res = -1;
 739                                 do {
 740                                         if (waitpid(pid, &status, WNOHANG) == 0 || !WIFEXITED(status)) {
 741                                                 usleep(200000);
 742                                         } else {
 743                                                 res = WEXITSTATUS(status);
 744                                                 break;
 745                                         }
 746                                         if (time(NULL) - start_wait > 5) {
 747                                                 debug_print("SIGTERM'ing gpg\n");
 748                                                 kill(pid, SIGTERM);
 749                                         }
 750                                         if (time(NULL) - start_wait > 6) {
 751                                                 debug_print("SIGKILL'ing gpg\n");
 752                                                 kill(pid, SIGKILL);
 753                                                 break;
 754                                         }
 755                                 } while(1);
 756                         }
 757                         if (res == 0) {
 758                                 alertpanel_notice(_("Key exported."));
 759                         } else {
 760                                 alertpanel_error(_("Couldn't export key."));
 761                         }
 762                         g_free(cmd);
 763 #else
 764                         alertpanel_error(_("Key export isn't implemented in Windows."));
 765 #endif
 766                 }
 767         }
 768         prefs_gpg_get_config()->gpg_ask_create_key = FALSE;
 769         prefs_gpg_save_config();
 770         gpgme_release(ctx);
 771 }
 772
 773 gboolean sgpgme_has_secret_key(void)
 774 {
 775         gpgme_error_t err = 0;
 776         gpgme_ctx_t ctx;
 777         gpgme_key_t key;
 778
 779         err = gpgme_new (&ctx);
 780         if (err) {
 781                 debug_print("err : %s\n", gpgme_strerror(err));
 782                 return TRUE;
 783         }
 784         err = gpgme_op_keylist_start(ctx, NULL, TRUE);
 785         if (!err)
 786                 err = gpgme_op_keylist_next(ctx, &key);
 787         gpgme_op_keylist_end(ctx);
 788         gpgme_release(ctx);
 789         if (gpg_err_code(err) == GPG_ERR_EOF)
 790                 return FALSE;
 791         else
 792                 return TRUE;
 793 }
 794
 795 void sgpgme_check_create_key(void)
 796 {
 797         if (prefs_gpg_get_config()->gpg_ask_create_key &&
 798             !sgpgme_has_secret_key()) {
 799                 sgpgme_create_secret_key(NULL, TRUE);
 800         } else {
 801                 prefs_gpg_get_config()->gpg_ask_create_key = FALSE;
 802                 prefs_gpg_save_config();
 803         }
 804 }
 805 #endif /* USE_GPGME */