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 <string.h>
  33 #include <stdlib.h>
  34 #include <errno.h>
  35 #include <sys/types.h>
  36 #include <sys/wait.h>
  37 #if (defined(__DragonFly__) || defined (__NetBSD__) || defined (__FreeBSD__) || defined (__OpenBSD__))
  38 #  include <sys/signal.h>
  39 #endif
  40 #ifndef G_OS_WIN32
  41 #include <sys/mman.h>
  42 #endif
  43 #if HAVE_LOCALE_H
  44 #  include <locale.h>
  45 #endif
  46
  47 #include "sgpgme.h"
  48 #include "privacy.h"
  49 #include "prefs_common.h"
  50 #include "utils.h"
  51 #include "alertpanel.h"
  52 #include "passphrase.h"
  53 #include "prefs_gpg.h"
  54 #include "account.h"
  55 #include "select-keys.h"
  56
  57 static void sgpgme_disable_all(void)
  58 {
  59     /* FIXME: set a flag, so that we don't bother the user with failed
  60      * gpgme messages */
  61 }
  62
  63 gpgme_verify_result_t sgpgme_verify_signature(gpgme_ctx_t ctx, gpgme_data_t sig,
  64                                         gpgme_data_t plain, gpgme_data_t dummy)
  65 {
  66         gpgme_verify_result_t status = NULL;
  67         gpgme_error_t err;
  68
  69         if ((err = gpgme_op_verify(ctx, sig, plain, dummy)) != GPG_ERR_NO_ERROR) {
  70                 debug_print("op_verify err %s\n", gpgme_strerror(err));
  71                 privacy_set_error(gpgme_strerror(err));
  72                 return GINT_TO_POINTER(-GPG_ERR_SYSTEM_ERROR);
  73
  74         }
  75         status = gpgme_op_verify_result(ctx);
  76         if (status && status->signatures == NULL) {
  77                 debug_print("no signature found\n");
  78                 privacy_set_error(_("No signature found"));
  79                 return GINT_TO_POINTER(-GPG_ERR_SYSTEM_ERROR);
  80         }
  81         return status;
  82 }
  83
  84 SignatureStatus sgpgme_sigstat_gpgme_to_privacy(gpgme_ctx_t ctx, gpgme_verify_result_t status)
  85 {
  86         unsigned long validity = 0;
  87         gpgme_signature_t sig = NULL;
  88
  89         if (GPOINTER_TO_INT(status) == -GPG_ERR_SYSTEM_ERROR) {
  90                 debug_print("system error\n");
  91                 return SIGNATURE_CHECK_FAILED;
  92         }
  93
  94         if (status == NULL) {
  95                 debug_print("status == NULL\n");
  96                 return SIGNATURE_UNCHECKED;
  97         }
  98         sig = status->signatures;
  99
 100         if (sig == NULL) {
 101                 debug_print("sig == NULL\n");
 102                 return SIGNATURE_UNCHECKED;
 103         }
 104         validity = sig->validity;
 105
 106         debug_print("err code %d\n", gpg_err_code(sig->status));
 107         switch (gpg_err_code(sig->status)) {
 108         case GPG_ERR_NO_ERROR:
 109                 switch (gpg_err_code(sig->validity)) {
 110                 case GPGME_VALIDITY_NEVER:
 111                         return SIGNATURE_INVALID;
 112                 case GPGME_VALIDITY_UNKNOWN:
 113                 case GPGME_VALIDITY_UNDEFINED:
 114                 case GPGME_VALIDITY_MARGINAL:
 115                 case GPGME_VALIDITY_FULL:
 116                 case GPGME_VALIDITY_ULTIMATE:
 117                         return SIGNATURE_OK;
 118                 default:
 119                         return SIGNATURE_CHECK_FAILED;
 120                 }
 121         case GPG_ERR_SIG_EXPIRED:
 122         case GPG_ERR_KEY_EXPIRED:
 123                 return SIGNATURE_WARN;
 124         case GPG_ERR_BAD_SIGNATURE:
 125                 return SIGNATURE_INVALID;
 126         case GPG_ERR_NO_PUBKEY:
 127                 return SIGNATURE_CHECK_FAILED;
 128         default:
 129                 return SIGNATURE_CHECK_FAILED;
 130         }
 131         return SIGNATURE_CHECK_FAILED;
 132 }
 133
 134 static const gchar *get_validity_str(unsigned long validity)
 135 {
 136         switch (gpg_err_code(validity)) {
 137         case GPGME_VALIDITY_UNKNOWN:
 138                 return _("Unknown");
 139         case GPGME_VALIDITY_UNDEFINED:
 140                 return _("Undefined");
 141         case GPGME_VALIDITY_NEVER:
 142                 return _("Never");
 143         case GPGME_VALIDITY_MARGINAL:
 144                 return _("Marginal");
 145         case GPGME_VALIDITY_FULL:
 146                 return _("Full");
 147         case GPGME_VALIDITY_ULTIMATE:
 148                 return _("Ultimate");
 149         default:
 150                 return _("Error");
 151         }
 152 }
 153
 154 static gchar *extract_name(const char *uid)
 155 {
 156         if (uid == NULL)
 157                 return NULL;
 158         if (!strncmp(uid, "CN=", 3)) {
 159                 gchar *result = g_strdup(uid+3);
 160                 if (strstr(result, ","))
 161                         *(strstr(result, ",")) = '\0';
 162                 return result;
 163         } else if (strstr(uid, ",CN=")) {
 164                 gchar *result = g_strdup(strstr(uid, ",CN=")+4);
 165                 if (strstr(result, ","))
 166                         *(strstr(result, ",")) = '\0';
 167                 return result;
 168         } else {
 169                 return g_strdup(uid);
 170         }
 171 }
 172 gchar *sgpgme_sigstat_info_short(gpgme_ctx_t ctx, gpgme_verify_result_t status)
 173 {
 174         gpgme_signature_t sig = NULL;
 175         gchar *uname = NULL;
 176         gpgme_key_t key;
 177         gchar *result = NULL;
 178         gpgme_error_t err = 0;
 179         static gboolean warned = FALSE;
 180
 181         if (GPOINTER_TO_INT(status) == -GPG_ERR_SYSTEM_ERROR) {
 182                 return g_strdup_printf(_("The signature can't be checked - %s"), privacy_get_error());
 183         }
 184
 185         if (status == NULL) {
 186                 return g_strdup(_("The signature has not been checked."));
 187         }
 188         sig = status->signatures;
 189         if (sig == NULL) {
 190                 return g_strdup(_("The signature has not been checked."));
 191         }
 192
 193         err = gpgme_get_key(ctx, sig->fpr, &key, 0);
 194         if (gpg_err_code(err) == GPG_ERR_NO_AGENT) {
 195                 if (!warned)
 196                         alertpanel_error(_("PGP Core: Can't get key - no gpg-agent running."));
 197                 else
 198                         g_warning(_("PGP Core: Can't get key - no gpg-agent running."));
 199                 warned = TRUE;
 200         }
 201         if (key)
 202                 uname = extract_name(key->uids->uid);
 203         else
 204                 uname = g_strdup("<?>");
 205         switch (gpg_err_code(sig->status)) {
 206         case GPG_ERR_NO_ERROR:
 207                 switch (gpg_err_code(sig->validity)) {
 208                 case GPGME_VALIDITY_MARGINAL:
 209                 case GPGME_VALIDITY_FULL:
 210                 case GPGME_VALIDITY_ULTIMATE:
 211                         result = g_strdup_printf(_("Good signature from %s."), uname);
 212                         break;
 213                 case GPGME_VALIDITY_UNKNOWN:
 214                 case GPGME_VALIDITY_UNDEFINED:
 215                 case GPGME_VALIDITY_NEVER:
 216                 default:
 217                         result = g_strdup_printf(_("Good signature (untrusted) from %s."), uname);
 218                         break;
 219                 }
 220                 break;
 221         case GPG_ERR_SIG_EXPIRED:
 222                 result = g_strdup_printf(_("Expired signature from %s."), uname);
 223                 break;
 224         case GPG_ERR_KEY_EXPIRED:
 225                 result = g_strdup_printf(_("Expired key from %s."), uname);
 226                 break;
 227         case GPG_ERR_BAD_SIGNATURE:
 228                 result = g_strdup_printf(_("Bad signature from %s."), uname);
 229                 break;
 230         case GPG_ERR_NO_PUBKEY: {
 231                 gchar *id = g_strdup(sig->fpr + strlen(sig->fpr)-8);
 232                 result = g_strdup_printf(_("Key 0x%s not available to verify this signature."), id);
 233                 g_free(id);
 234                 break;
 235                 }
 236         default:
 237                 result = g_strdup(_("The signature has not been checked."));
 238                 break;
 239         }
 240         if (result == NULL)
 241                 result = g_strdup(_("Error"));
 242         g_free(uname);
 243         return result;
 244 }
 245
 246 gchar *sgpgme_sigstat_info_full(gpgme_ctx_t ctx, gpgme_verify_result_t status)
 247 {
 248         gint i = 0;
 249         gchar *ret;
 250         GString *siginfo;
 251         gpgme_signature_t sig = status->signatures;
 252
 253         siginfo = g_string_sized_new(64);
 254         while (sig) {
 255                 gpgme_user_id_t user = NULL;
 256                 gpgme_key_t key;
 257
 258                 const gchar *keytype, *keyid, *uid;
 259
 260                 gpgme_get_key(ctx, sig->fpr, &key, 0);
 261
 262                 if (key) {
 263                         user = key->uids;
 264                         keytype = gpgme_pubkey_algo_name(
 265                                         key->subkeys->pubkey_algo);
 266                         keyid = key->subkeys->keyid;
 267                         uid = user->uid;
 268                 } else {
 269                         keytype = "?";
 270                         keyid = "?";
 271                         uid = "?";
 272                 }
 273                 g_string_append_printf(siginfo,
 274                         _("Signature made using %s key ID %s\n"),
 275                         keytype, keyid);
 276
 277                 switch (gpg_err_code(sig->status)) {
 278                 case GPG_ERR_NO_ERROR:
 279                 case GPG_ERR_KEY_EXPIRED:
 280                         g_string_append_printf(siginfo,
 281                                 _("Good signature from \"%s\" (Trust: %s)\n"),
 282                                 uid, get_validity_str(sig->validity));
 283                         break;
 284                 case GPG_ERR_SIG_EXPIRED:
 285                         g_string_append_printf(siginfo,
 286                                 _("Expired signature from \"%s\"\n"),
 287                                 uid);
 288                         break;
 289                 case GPG_ERR_BAD_SIGNATURE:
 290                         g_string_append_printf(siginfo,
 291                                 _("BAD signature from \"%s\"\n"),
 292                                 uid);
 293                         break;
 294                 default:
 295                         break;
 296                 }
 297                 if (sig->status != GPG_ERR_BAD_SIGNATURE) {
 298                         gint j = 1;
 299                         user = user ? user->next : NULL;
 300                         while (user != NULL) {
 301                                 g_string_append_printf(siginfo,
 302                                         _("                aka \"%s\"\n"),
 303                                         user->uid);
 304                                 j++;
 305                                 user = user->next;
 306                         }
 307                         g_string_append_printf(siginfo,
 308                                 _("Primary key fingerprint: %s\n"),
 309                                 sig ? sig->fpr: "?");
 310 #ifdef HAVE_GPGME_PKA_TRUST
 311                         if (sig->pka_trust == 1 && sig->pka_address) {
 312                                 g_string_append_printf(siginfo,
 313                                    _("WARNING: Signer's address \"%s\" "
 314                                       "does not match DNS entry\n"),
 315                                    sig->pka_address);
 316                         }
 317                         else if (sig->pka_trust == 2 && sig->pka_address) {
 318                                 g_string_append_printf(siginfo,
 319                                    _("Verified signer's address is \"%s\"\n"),
 320                                    sig->pka_address);
 321                                 /* FIXME: Compare the address to the
 322                                  * From: address.  */
 323                         }
 324 #endif /*HAVE_GPGME_PKA_TRUST*/
 325                 }
 326
 327                 g_string_append(siginfo, "\n");
 328                 i++;
 329                 sig = sig->next;
 330         }
 331
 332         ret = siginfo->str;
 333         g_string_free(siginfo, FALSE);
 334         return ret;
 335 }
 336
 337 gpgme_data_t sgpgme_data_from_mimeinfo(MimeInfo *mimeinfo)
 338 {
 339         gpgme_data_t data = NULL;
 340         gpgme_error_t err;
 341         FILE *fp = g_fopen(mimeinfo->data.filename, "rb");
 342         gchar *tmp_file = NULL;
 343
 344         if (!fp)
 345                 return NULL;
 346
 347         tmp_file = get_tmp_file();
 348         copy_file_part(fp, mimeinfo->offset, mimeinfo->length, tmp_file);
 349         fclose(fp);
 350         fp = NULL;
 351         debug_print("tmp file %s\n", tmp_file);
 352
 353         err = gpgme_data_new_from_file(&data, tmp_file, 1);
 354         g_unlink(tmp_file);
 355         g_free(tmp_file);
 356
 357         debug_print("data %p (%d %d)\n", (void *)&data, mimeinfo->offset, mimeinfo->length);
 358         if (err) {
 359                 debug_print ("gpgme_data_new_from_file failed: %s\n",
 360                              gpgme_strerror (err));
 361                 privacy_set_error(_("Couldn't get data from message, %s"), gpgme_strerror(err));
 362                 return NULL;
 363         }
 364         return data;
 365 }
 366
 367 gpgme_data_t sgpgme_decrypt_verify(gpgme_data_t cipher, gpgme_verify_result_t *status, gpgme_ctx_t ctx)
 368 {
 369         struct passphrase_cb_info_s info;
 370         gpgme_data_t plain;
 371         gpgme_error_t err;
 372
 373         memset (&info, 0, sizeof info);
 374
 375         if ((err = gpgme_data_new(&plain)) != GPG_ERR_NO_ERROR) {
 376                 gpgme_release(ctx);
 377                 privacy_set_error(_("Couldn't initialize data, %s"), gpgme_strerror(err));
 378                 return NULL;
 379         }
 380
 381         if (gpgme_get_protocol(ctx) == GPGME_PROTOCOL_OpenPGP) {
 382                 prefs_gpg_enable_agent(prefs_gpg_get_config()->use_gpg_agent);
 383                 if (!getenv("GPG_AGENT_INFO") || !prefs_gpg_get_config()->use_gpg_agent) {
 384                         info.c = ctx;
 385                         gpgme_set_passphrase_cb (ctx, gpgmegtk_passphrase_cb, &info);
 386                 }
 387         } else {
 388                 prefs_gpg_enable_agent(TRUE);
 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                         privacy_set_error("%s", gpgme_strerror(err));
 416                         gpgmegtk_free_passphrase();
 417                         gpgme_data_release(plain);
 418                         return NULL;
 419                 }
 420
 421                 err = gpgme_data_rewind(plain);
 422                 if (err) {
 423                         debug_print("can't seek (%d %d %s)\n", err, errno, strerror(errno));
 424                 }
 425
 426                 debug_print("decrypted.\n");
 427                 *status = gpgme_op_verify_result (ctx);
 428         }
 429         return plain;
 430 }
 431
 432 gchar *sgpgme_get_encrypt_data(GSList *recp_names, gpgme_protocol_t proto)
 433 {
 434         SelectionResult result = KEY_SELECTION_CANCEL;
 435         gpgme_key_t *keys = gpgmegtk_recipient_selection(recp_names, &result,
 436                                 proto);
 437         gchar *ret = NULL;
 438         int i = 0;
 439
 440         if (!keys) {
 441                 if (result == KEY_SELECTION_DONT)
 442                         return g_strdup("_DONT_ENCRYPT_");
 443                 else
 444                         return NULL;
 445         }
 446         while (keys[i]) {
 447                 gpgme_subkey_t skey = keys[i]->subkeys;
 448                 gchar *fpr = skey->fpr;
 449                 gchar *tmp = NULL;
 450                 debug_print("adding %s\n", fpr);
 451                 tmp = g_strconcat(ret?ret:"", fpr, " ", NULL);
 452                 g_free(ret);
 453                 ret = tmp;
 454                 i++;
 455         }
 456         return ret;
 457 }
 458
 459 gboolean sgpgme_setup_signers(gpgme_ctx_t ctx, PrefsAccount *account)
 460 {
 461         GPGAccountConfig *config;
 462
 463         gpgme_signers_clear(ctx);
 464
 465         config = prefs_gpg_account_get_config(account);
 466
 467         switch(config->sign_key) {
 468         case SIGN_KEY_DEFAULT:
 469                 debug_print("using default gnupg key\n");
 470                 break;
 471         case SIGN_KEY_BY_FROM:
 472                 debug_print("using key for %s\n", account->address);
 473                 break;
 474         case SIGN_KEY_CUSTOM:
 475                 debug_print("using key for %s\n", config->sign_key_id);
 476                 break;
 477         }
 478
 479         if (config->sign_key != SIGN_KEY_DEFAULT) {
 480                 gchar *keyid;
 481                 gpgme_key_t key, key2;
 482                 gpgme_error_t err;
 483
 484                 if (config->sign_key == SIGN_KEY_BY_FROM)
 485                         keyid = account->address;
 486                 else if (config->sign_key == SIGN_KEY_CUSTOM)
 487                         keyid = config->sign_key_id;
 488                 else
 489                         goto bail;
 490
 491                 err = gpgme_op_keylist_start(ctx, keyid, 1);
 492                 if (!err)
 493                         err = gpgme_op_keylist_next(ctx, &key);
 494                 if (err) {
 495                         g_warning("setup_signers start: %s", gpgme_strerror(err));
 496                         privacy_set_error(_("Secret key not found (%s)"), gpgme_strerror(err));
 497                         goto bail;
 498                 }
 499
 500                 err = gpgme_op_keylist_next(ctx, &key2);
 501                 if (!err) {
 502                         g_warning("ambiguous specification of secret key '%s'\n",
 503                                 keyid);
 504                         privacy_set_error(_("Secret key specification is ambiguous"));
 505                         goto bail;
 506                 }
 507
 508                 gpgme_op_keylist_end(ctx);
 509                 err = gpgme_signers_add(ctx, key);
 510                 gpgme_key_release(key);
 511
 512                 if (err) {
 513                         g_warning("error adding secret key: %s\n", gpgme_strerror(err));
 514                         privacy_set_error(_("Error setting secret key: %s"), gpgme_strerror(err));
 515                         goto bail;
 516                 }
 517         }
 518
 519         prefs_gpg_account_free_config(config);
 520
 521         return TRUE;
 522 bail:
 523         prefs_gpg_account_free_config(config);
 524         return FALSE;
 525 }
 526
 527 void sgpgme_init()
 528 {
 529         gpgme_engine_info_t engineInfo;
 530         if (gpgme_check_version("1.0.0")) {
 531 #ifdef LC_CTYPE
 532                 gpgme_set_locale(NULL, LC_CTYPE, setlocale(LC_CTYPE, NULL));
 533 #endif
 534 #ifdef LC_MESSAGES
 535                 gpgme_set_locale(NULL, LC_MESSAGES, setlocale(LC_MESSAGES, NULL));
 536 #endif
 537                 if (!gpgme_get_engine_info(&engineInfo)) {
 538                         while (engineInfo) {
 539                                 debug_print("GpgME Protocol: %s\n"
 540                                             "Version: %s (req %s)\n"
 541                                             "Executable: %s\n",
 542                                         gpgme_get_protocol_name(engineInfo->protocol),
 543                                         engineInfo->version ? engineInfo->version:"???",
 544                                         engineInfo->req_version ? engineInfo->req_version:"???",
 545                                         engineInfo->file_name ? engineInfo->file_name:"???");
 546                                 if (engineInfo->protocol == GPGME_PROTOCOL_OpenPGP
 547                                 &&  gpgme_engine_check_version(engineInfo->protocol) !=
 548                                         GPG_ERR_NO_ERROR) {
 549                                         if (engineInfo->file_name && !engineInfo->version) {
 550                                                 alertpanel_error(_("Gpgme protocol '%s' is unusable: "
 551                                                                    "Engine '%s' isn't installed properly."),
 552                                                                    gpgme_get_protocol_name(engineInfo->protocol),
 553                                                                    engineInfo->file_name);
 554                                         } else if (engineInfo->file_name && engineInfo->version
 555                                           && engineInfo->req_version) {
 556                                                 alertpanel_error(_("Gpgme protocol '%s' is unusable: "
 557                                                                    "Engine '%s' version %s is installed, "
 558                                                                    "but version %s is required.\n"),
 559                                                                    gpgme_get_protocol_name(engineInfo->protocol),
 560                                                                    engineInfo->file_name,
 561                                                                    engineInfo->version,
 562                                                                    engineInfo->req_version);
 563                                         } else {
 564                                                 alertpanel_error(_("Gpgme protocol '%s' is unusable "
 565                                                                    "(unknown problem)"),
 566                                                                    gpgme_get_protocol_name(engineInfo->protocol));
 567                                         }
 568                                 }
 569                                 engineInfo = engineInfo->next;
 570                         }
 571                 }
 572         } else {
 573                 sgpgme_disable_all();
 574
 575                 if (prefs_gpg_get_config()->gpg_warning) {
 576                         AlertValue val;
 577
 578                         val = alertpanel_full
 579                                 (_("Warning"),
 580                                  _("GnuPG is not installed properly, or needs "
 581                                  "to be upgraded.\n"
 582                                  "OpenPGP support disabled."),
 583                                  GTK_STOCK_CLOSE, NULL, NULL, TRUE, NULL,
 584                                  ALERT_WARNING, G_ALERTDEFAULT);
 585                         if (val & G_ALERTDISABLE)
 586                                 prefs_gpg_get_config()->gpg_warning = FALSE;
 587                 }
 588         }
 589 }
 590
 591 void sgpgme_done()
 592 {
 593         gpgmegtk_free_passphrase();
 594 }
 595
 596 void sgpgme_create_secret_key(PrefsAccount *account, gboolean ask_create)
 597 {
 598         AlertValue val = G_ALERTDEFAULT;
 599         gchar *key_parms = NULL;
 600         gchar *name = NULL;
 601         gchar *email = NULL;
 602         gchar *passphrase = NULL, *passphrase_second = NULL;
 603         gint prev_bad = 0;
 604         gchar *tmp = NULL;
 605         gpgme_error_t err = 0;
 606         gpgme_ctx_t ctx;
 607         GtkWidget *window = NULL;
 608         gpgme_genkey_result_t key;
 609
 610         if (account == NULL)
 611                 account = account_get_default();
 612
 613         if (account->address == NULL) {
 614                 alertpanel_error(_("You have to save the account's information with \"OK\" "
 615                                    "before being able to generate a key pair.\n"));
 616                 return;
 617         }
 618         if (ask_create) {
 619                 val = alertpanel(_("No PGP key found"),
 620                                 _("Claws Mail did not find a secret PGP key, "
 621                                   "which means that you won't be able to sign "
 622                                   "emails or receive encrypted emails.\n"
 623                                   "Do you want to create a new key pair now?"),
 624                                   GTK_STOCK_NO, "+" GTK_STOCK_YES, NULL);
 625                 if (val == G_ALERTDEFAULT) {
 626                         prefs_gpg_get_config()->gpg_ask_create_key = FALSE;
 627                         prefs_gpg_save_config();
 628                         return;
 629                 }
 630         }
 631
 632         if (account->name) {
 633                 name = g_strdup(account->name);
 634         } else {
 635                 name = g_strdup(account->address);
 636         }
 637         email = g_strdup(account->address);
 638         tmp = g_strdup_printf("%s <%s>", account->name?account->name:account->address, account->address);
 639 again:
 640         passphrase = passphrase_mbox(tmp, NULL, prev_bad, 1);
 641         if (passphrase == NULL) {
 642                 g_free(tmp);
 643                 g_free(email);
 644                 g_free(name);
 645                 return;
 646         }
 647         passphrase_second = passphrase_mbox(tmp, NULL, 0, 2);
 648         if (passphrase_second == NULL) {
 649                 g_free(tmp);
 650                 g_free(email);
 651                 g_free(passphrase);
 652                 g_free(name);
 653                 return;
 654         }
 655         if (strcmp(passphrase, passphrase_second)) {
 656                 g_free(passphrase);
 657                 g_free(passphrase_second);
 658                 prev_bad = 1;
 659                 goto again;
 660         }
 661
 662         key_parms = g_strdup_printf("<GnupgKeyParms format=\"internal\">\n"
 663                                         "Key-Type: DSA\n"
 664                                         "Key-Length: 1024\n"
 665                                         "Subkey-Type: ELG-E\n"
 666                                         "Subkey-Length: 2048\n"
 667                                         "Name-Real: %s\n"
 668                                         "Name-Email: %s\n"
 669                                         "Expire-Date: 0\n"
 670                                         "%s%s%s"
 671                                         "</GnupgKeyParms>\n",
 672                                         name, email,
 673                                         strlen(passphrase)?"Passphrase: ":"",
 674                                         passphrase,
 675                                         strlen(passphrase)?"\n":"");
 676 #ifndef G_PLATFORM_WIN32
 677         if (mlock(passphrase, strlen(passphrase)) == -1)
 678                 debug_print("couldn't lock passphrase\n");
 679         if (mlock(passphrase_second, strlen(passphrase_second)) == -1)
 680                 debug_print("couldn't lock passphrase2\n");
 681 #endif
 682         g_free(tmp);
 683         g_free(email);
 684         g_free(name);
 685         g_free(passphrase_second);
 686         g_free(passphrase);
 687
 688         err = gpgme_new (&ctx);
 689         if (err) {
 690                 alertpanel_error(_("Couldn't generate a new key pair: %s"),
 691                                  gpgme_strerror(err));
 692                 g_free(key_parms);
 693                 return;
 694         }
 695
 696
 697         window = label_window_create(_("Generating your new key pair... Please move the mouse "
 698                               "around to help generate entropy..."));
 699
 700         err = gpgme_op_genkey(ctx, key_parms, NULL, NULL);
 701         g_free(key_parms);
 702
 703         label_window_destroy(window);
 704
 705         if (err) {
 706                 alertpanel_error(_("Couldn't generate a new key pair: %s"), gpgme_strerror(err));
 707                 gpgme_release(ctx);
 708                 return;
 709         }
 710         key = gpgme_op_genkey_result(ctx);
 711         if (key == NULL) {
 712                 alertpanel_error(_("Couldn't generate a new key pair: unknown error"));
 713                 gpgme_release(ctx);
 714                 return;
 715         } else {
 716                 gchar *buf = g_strdup_printf(_("Your new key pair has been generated. "
 717                                     "Its fingerprint is:\n%s\n\nDo you want to export it "
 718                                     "to a keyserver?"),
 719                                     key->fpr ? key->fpr:"null");
 720                 AlertValue val = alertpanel(_("Key generated"), buf,
 721                                   GTK_STOCK_NO, "+" GTK_STOCK_YES, NULL);
 722                 g_free(buf);
 723                 if (val == G_ALERTALTERNATE) {
 724 #ifndef G_OS_WIN32
 725                         gchar *cmd = g_strdup_printf("gpg --no-tty --send-keys %s", key->fpr);
 726                         int res = 0;
 727                         pid_t pid = 0;
 728                         pid = fork();
 729                         if (pid == -1) {
 730                                 res = -1;
 731                         } else if (pid == 0) {
 732                                 /* son */
 733                                 res = system(cmd);
 734                                 res = WEXITSTATUS(res);
 735                                 _exit(res);
 736                         } else {
 737                                 int status = 0;
 738                                 time_t start_wait = time(NULL);
 739                                 res = -1;
 740                                 do {
 741                                         if (waitpid(pid, &status, WNOHANG) == 0 || !WIFEXITED(status)) {
 742                                                 usleep(200000);
 743                                         } else {
 744                                                 res = WEXITSTATUS(status);
 745                                                 break;
 746                                         }
 747                                         if (time(NULL) - start_wait > 5) {
 748                                                 debug_print("SIGTERM'ing gpg\n");
 749                                                 kill(pid, SIGTERM);
 750                                         }
 751                                         if (time(NULL) - start_wait > 6) {
 752                                                 debug_print("SIGKILL'ing gpg\n");
 753                                                 kill(pid, SIGKILL);
 754                                                 break;
 755                                         }
 756                                 } while(1);
 757                         }
 758                         if (res == 0) {
 759                                 alertpanel_notice(_("Key exported."));
 760                         } else {
 761                                 alertpanel_error(_("Couldn't export key."));
 762                         }
 763                         g_free(cmd);
 764 #else
 765                         alertpanel_error(_("Key export isn't implemented in Windows."));
 766 #endif
 767                 }
 768         }
 769         prefs_gpg_get_config()->gpg_ask_create_key = FALSE;
 770         prefs_gpg_save_config();
 771         gpgme_release(ctx);
 772 }
 773
 774 gboolean sgpgme_has_secret_key(void)
 775 {
 776         gpgme_error_t err = 0;
 777         gpgme_ctx_t ctx;
 778         gpgme_key_t key;
 779
 780         err = gpgme_new (&ctx);
 781         if (err) {
 782                 debug_print("err : %s\n", gpgme_strerror(err));
 783                 return TRUE;
 784         }
 785         err = gpgme_op_keylist_start(ctx, NULL, TRUE);
 786         if (!err)
 787                 err = gpgme_op_keylist_next(ctx, &key);
 788         gpgme_op_keylist_end(ctx);
 789         gpgme_release(ctx);
 790         if (gpg_err_code(err) == GPG_ERR_EOF)
 791                 return FALSE;
 792         else
 793                 return TRUE;
 794 }
 795
 796 void sgpgme_check_create_key(void)
 797 {
 798         if (prefs_gpg_get_config()->gpg_ask_create_key &&
 799             !sgpgme_has_secret_key()) {
 800                 sgpgme_create_secret_key(NULL, TRUE);
 801         } else {
 802                 prefs_gpg_get_config()->gpg_ask_create_key = FALSE;
 803                 prefs_gpg_save_config();
 804         }
 805 }
 806
 807 void *sgpgme_data_release_and_get_mem(gpgme_data_t data, size_t *len)
 808 {
 809         char buf[BUFSIZ];
 810         void *result = NULL;
 811         ssize_t r = 0;
 812         size_t w = 0;
 813
 814         if (data == NULL)
 815                 return NULL;
 816         if (len == NULL)
 817                 return NULL;
 818
 819         /* I know it's deprecated, but we don't compile with _LARGEFILE */
 820         gpgme_data_rewind(data);
 821         while ((r = gpgme_data_read(data, buf, BUFSIZ)) > 0) {
 822                 result = realloc(result, r + w);
 823                 memcpy(result+w, buf, r);
 824                 w += r;
 825         }
 826
 827         *len = w;
 828
 829         gpgme_data_release(data);
 830         if (r < 0) {
 831                 free(result);
 832                 *len = 0;
 833                 return NULL;
 834         }
 835         return result;
 836 }
 837 #endif /* USE_GPGME */