src/plugins/pgpcore/prefs_gpg.c

   1 /*
   2  * Claws Mail -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 2004-2007 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 3 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, see <http://www.gnu.org/licenses/>.
  17  *
  18  */
  19
  20 #include <gtk/gtk.h>
  21 #include <glib.h>
  22 #include <glib/gi18n.h>
  23
  24 #include "defs.h"
  25 #include "utils.h"
  26 #include "prefs.h"
  27 #include "prefs_gtk.h"
  28 #include "prefs_gpg.h"
  29 #include "sgpgme.h"
  30
  31 struct GPGConfig prefs_gpg;
  32
  33 static PrefParam param[] = {
  34         /* Privacy */
  35         {"auto_check_signatures", "FALSE",
  36          &prefs_gpg.auto_check_signatures, P_BOOL,
  37          NULL, NULL, NULL},
  38         {"use_gpg_agent", "TRUE", &prefs_gpg.use_gpg_agent, P_BOOL,
  39          NULL, NULL, NULL},
  40         {"store_passphrase", "FALSE", &prefs_gpg.store_passphrase, P_BOOL,
  41          NULL, NULL, NULL},
  42         {"store_passphrase_timeout", "0",
  43          &prefs_gpg.store_passphrase_timeout, P_INT,
  44          NULL, NULL, NULL},
  45         {"passphrase_grab", "FALSE", &prefs_gpg.passphrase_grab, P_BOOL,
  46          NULL, NULL, NULL},
  47         {"gpg_warning", "TRUE", &prefs_gpg.gpg_warning, P_BOOL,
  48          NULL, NULL, NULL},
  49         {"gpg_ask_create_key", "TRUE", &prefs_gpg.gpg_ask_create_key, P_BOOL,
  50          NULL, NULL, NULL},
  51         {"skip_encryption_warning", "", &prefs_gpg.skip_encryption_warning, P_STRING,
  52          NULL, NULL, NULL},
  53
  54         {NULL, NULL, NULL, P_OTHER, NULL, NULL, NULL}
  55 };
  56
  57 static gchar *saved_gpg_agent_info = NULL;
  58
  59 struct GPGPage
  60 {
  61         PrefsPage page;
  62
  63         GtkWidget *checkbtn_auto_check_signatures;
  64         GtkWidget *checkbtn_use_gpg_agent;
  65         GtkWidget *checkbtn_store_passphrase;
  66         GtkWidget *spinbtn_store_passphrase;
  67         GtkWidget *checkbtn_passphrase_grab;
  68         GtkWidget *checkbtn_gpg_warning;
  69 };
  70
  71 static void prefs_gpg_create_widget_func(PrefsPage *_page,
  72                                          GtkWindow *window,
  73                                          gpointer data)
  74 {
  75         struct GPGPage *page = (struct GPGPage *) _page;
  76         struct GPGConfig *config;
  77
  78         GtkWidget *checkbtn_use_gpg_agent;
  79         GtkWidget *checkbtn_passphrase_grab;
  80         GtkWidget *checkbtn_store_passphrase;
  81         GtkWidget *checkbtn_auto_check_signatures;
  82         GtkWidget *checkbtn_gpg_warning;
  83         GtkWidget *hbox1;
  84         GtkWidget *vbox1, *vbox2;
  85         GtkWidget *label_expire1;
  86         GtkObject *spinbtn_store_passphrase_adj;
  87         GtkWidget *spinbtn_store_passphrase;
  88         GtkWidget *label_expire2;
  89         GtkWidget *frame_passphrase;
  90         GtkTooltips *tooltips;
  91
  92         tooltips = gtk_tooltips_new();
  93
  94         vbox1 = gtk_vbox_new (FALSE, VSPACING);
  95         gtk_widget_show (vbox1);
  96         gtk_container_set_border_width (GTK_CONTAINER (vbox1), VBOX_BORDER);
  97
  98         vbox2 = gtk_vbox_new (FALSE, 0);
  99         gtk_widget_show (vbox2);
 100         gtk_box_pack_start (GTK_BOX (vbox1), vbox2, FALSE, FALSE, 0);
 101
 102         PACK_CHECK_BUTTON (vbox2, checkbtn_auto_check_signatures,
 103                         _("Automatically check signatures"));
 104
 105         vbox2 = gtkut_get_options_frame(vbox1, &frame_passphrase, _("Passphrase"));
 106
 107         PACK_CHECK_BUTTON (vbox2, checkbtn_use_gpg_agent,
 108                         _("Use gpg-agent to manage passwords"));
 109         if (saved_gpg_agent_info == NULL)
 110                 gtk_widget_set_sensitive(checkbtn_use_gpg_agent, FALSE);
 111
 112         PACK_CHECK_BUTTON (vbox2, checkbtn_store_passphrase,
 113                         _("Store passphrase in memory"));
 114
 115         SET_TOGGLE_SENSITIVITY_REVERSE(checkbtn_use_gpg_agent, checkbtn_store_passphrase);
 116
 117         hbox1 = gtk_hbox_new (FALSE, 8);
 118         gtk_widget_show (hbox1);
 119         gtk_box_pack_start (GTK_BOX (vbox2), hbox1, FALSE, FALSE, 0);
 120
 121         SET_TOGGLE_SENSITIVITY_REVERSE(checkbtn_use_gpg_agent, hbox1);
 122
 123         label_expire1 = gtk_label_new(_("Expire after"));
 124         gtk_widget_show (label_expire1);
 125         gtk_box_pack_start (GTK_BOX (hbox1), label_expire1, FALSE, FALSE, 0);
 126
 127         spinbtn_store_passphrase_adj =
 128             gtk_adjustment_new(1, 0, 1440, 1, 10, 10);
 129         spinbtn_store_passphrase =
 130             gtk_spin_button_new(GTK_ADJUSTMENT
 131                                 (spinbtn_store_passphrase_adj), 1, 0);
 132         gtk_widget_show(spinbtn_store_passphrase);
 133         gtk_box_pack_start(GTK_BOX(hbox1), spinbtn_store_passphrase, FALSE,
 134                            FALSE, 0);
 135         gtk_widget_set_size_request(spinbtn_store_passphrase, 64, -1);
 136         gtk_tooltips_set_tip(tooltips, spinbtn_store_passphrase,
 137                              _
 138                              ("Setting to '0' will store the passphrase for the whole session"),
 139                              NULL);
 140         gtk_spin_button_set_numeric(GTK_SPIN_BUTTON
 141                                     (spinbtn_store_passphrase), TRUE);
 142
 143         label_expire2 = gtk_label_new(_("minute(s)"));
 144         gtk_widget_show(label_expire2);
 145         gtk_box_pack_start(GTK_BOX(hbox1), label_expire2, FALSE, FALSE, 0);
 146         gtk_misc_set_alignment(GTK_MISC(label_expire2), 0.0, 0.5);
 147
 148         SET_TOGGLE_SENSITIVITY (checkbtn_store_passphrase, label_expire1);
 149         SET_TOGGLE_SENSITIVITY (checkbtn_store_passphrase, spinbtn_store_passphrase);
 150         SET_TOGGLE_SENSITIVITY (checkbtn_store_passphrase, label_expire2);
 151
 152         PACK_CHECK_BUTTON (vbox2, checkbtn_passphrase_grab,
 153                         _("Grab input while entering a passphrase"));
 154
 155         vbox2 = gtk_vbox_new (FALSE, 0);
 156         gtk_widget_show (vbox2);
 157         gtk_box_pack_start (GTK_BOX (vbox1), vbox2, FALSE, FALSE, 0);
 158
 159         PACK_CHECK_BUTTON (vbox2, checkbtn_gpg_warning,
 160                         _("Display warning on start-up if GnuPG doesn't work"));
 161
 162         config = prefs_gpg_get_config();
 163
 164         gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(checkbtn_auto_check_signatures), config->auto_check_signatures);
 165         if (!getenv("GPG_AGENT_INFO"))
 166                 gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(checkbtn_use_gpg_agent), FALSE);
 167         else
 168                 gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(checkbtn_use_gpg_agent), config->use_gpg_agent);
 169         if (!gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(checkbtn_use_gpg_agent)))
 170                 gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(checkbtn_store_passphrase), config->store_passphrase);
 171         gtk_spin_button_set_value(GTK_SPIN_BUTTON(spinbtn_store_passphrase), (float) config->store_passphrase_timeout);
 172         gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(checkbtn_passphrase_grab), config->passphrase_grab);
 173         gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(checkbtn_gpg_warning), config->gpg_warning);
 174
 175         page->checkbtn_auto_check_signatures = checkbtn_auto_check_signatures;
 176         page->checkbtn_store_passphrase = checkbtn_store_passphrase;
 177         page->spinbtn_store_passphrase = spinbtn_store_passphrase;
 178         page->checkbtn_passphrase_grab = checkbtn_passphrase_grab;
 179         page->checkbtn_gpg_warning = checkbtn_gpg_warning;
 180         page->checkbtn_use_gpg_agent = checkbtn_use_gpg_agent;
 181         page->page.widget = vbox1;
 182 }
 183
 184 static void prefs_gpg_destroy_widget_func(PrefsPage *_page)
 185 {
 186 }
 187
 188 static void prefs_gpg_save_func(PrefsPage *_page)
 189 {
 190         struct GPGPage *page = (struct GPGPage *) _page;
 191         GPGConfig *config = prefs_gpg_get_config();
 192
 193         config->auto_check_signatures =
 194                 gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(page->checkbtn_auto_check_signatures));
 195         config->use_gpg_agent =
 196                 gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(page->checkbtn_use_gpg_agent));
 197         config->store_passphrase =
 198                 gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(page->checkbtn_store_passphrase));
 199         config->store_passphrase_timeout =
 200                 gtk_spin_button_get_value_as_int(GTK_SPIN_BUTTON(page->spinbtn_store_passphrase));
 201         config->passphrase_grab =
 202                 gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(page->checkbtn_passphrase_grab));
 203         config->gpg_warning =
 204                 gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(page->checkbtn_gpg_warning));
 205
 206         prefs_gpg_enable_agent(config->use_gpg_agent);
 207
 208         prefs_gpg_save_config();
 209 }
 210
 211 struct GPGAccountPage
 212 {
 213         PrefsPage page;
 214
 215         GtkWidget *key_default;
 216         GtkWidget *key_by_from;
 217         GtkWidget *key_custom;
 218         GtkWidget *keyid;
 219         GtkWidget *keyid_label;
 220         GtkWidget *new_key_label;
 221         GtkWidget *new_key_btn;
 222         GtkWidget *new_key_box;
 223
 224         PrefsAccount *account;
 225 };
 226
 227 void key_custom_toggled(GtkToggleButton *togglebutton, gpointer user_data)
 228 {
 229         struct GPGAccountPage *page = (struct GPGAccountPage *) user_data;
 230         gboolean active;
 231
 232         active = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(page->key_custom));
 233         gtk_widget_set_sensitive(GTK_WIDGET(page->keyid_label), active);
 234         gtk_widget_set_sensitive(GTK_WIDGET(page->keyid), active);
 235         if (!active)
 236                 gtk_editable_delete_text(GTK_EDITABLE(page->keyid), 0, -1);
 237 }
 238
 239 static void prefs_gpg_update_sens(struct GPGAccountPage *page)
 240 {
 241         gboolean active;
 242         active = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(page->key_custom));
 243         if (sgpgme_has_secret_key()) {
 244                 gtk_widget_hide(page->new_key_box);
 245                 gtk_widget_set_sensitive(page->key_default, TRUE);
 246                 gtk_widget_set_sensitive(page->key_by_from, TRUE);
 247                 gtk_widget_set_sensitive(page->key_custom, TRUE);
 248                 gtk_widget_set_sensitive(page->keyid, active);
 249                 gtk_widget_set_sensitive(page->keyid_label, active);
 250         } else {
 251                 gtk_widget_show(page->new_key_box);
 252                 gtk_widget_set_sensitive(page->key_default, FALSE);
 253                 gtk_widget_set_sensitive(page->key_by_from, FALSE);
 254                 gtk_widget_set_sensitive(page->key_custom, FALSE);
 255                 gtk_widget_set_sensitive(page->keyid, FALSE);
 256                 gtk_widget_set_sensitive(page->keyid_label, FALSE);
 257         }
 258 }
 259
 260 static void new_key_clicked(GtkWidget *widget, gpointer user_data)
 261 {
 262         struct GPGAccountPage *page = (struct GPGAccountPage *) user_data;
 263         sgpgme_create_secret_key(page->account, FALSE);
 264         prefs_gpg_update_sens(page);
 265 }
 266
 267 static void prefs_gpg_account_create_widget_func(PrefsPage *_page,
 268                                                  GtkWindow *window,
 269                                                  gpointer data)
 270 {
 271         struct GPGAccountPage *page = (struct GPGAccountPage *) _page;
 272         PrefsAccount *account = (PrefsAccount *) data;
 273         GPGAccountConfig *config;
 274
 275         GtkWidget *vbox;
 276         GtkWidget *frame1;
 277         GtkWidget *vbox2;
 278         GtkWidget *hbox;
 279         GSList *key_group = NULL;
 280         GtkWidget *key_default;
 281         GtkWidget *key_by_from;
 282         GtkWidget *key_custom;
 283         GtkWidget *keyid_label;
 284         GtkWidget *keyid;
 285         GtkWidget *image;
 286         GtkWidget *new_key_label;
 287         GtkWidget *new_key_btn;
 288         GtkWidget *new_key_box;
 289
 290         vbox = gtk_vbox_new(FALSE, VSPACING);
 291         gtk_container_set_border_width (GTK_CONTAINER (vbox), VBOX_BORDER);
 292         gtk_widget_show(vbox);
 293
 294         vbox2 = gtkut_get_options_frame(vbox, &frame1, _("Sign key"));
 295
 296         hbox = gtk_hbox_new (FALSE, 5);
 297         gtk_widget_show (hbox);
 298         gtk_box_pack_start (GTK_BOX (vbox2), hbox, FALSE, FALSE, 0);
 299         gtk_container_set_border_width (GTK_CONTAINER (hbox), 0);
 300
 301         key_default = gtk_radio_button_new_with_label(key_group,
 302                         _("Use default GnuPG key"));
 303         key_group = gtk_radio_button_get_group(GTK_RADIO_BUTTON(key_default));
 304         gtk_widget_show(key_default);
 305         gtk_box_pack_start(GTK_BOX(hbox), key_default, FALSE, FALSE, 0);
 306
 307         hbox = gtk_hbox_new (FALSE, 5);
 308         gtk_widget_show (hbox);
 309         gtk_box_pack_start (GTK_BOX (vbox2), hbox, FALSE, FALSE, 0);
 310         gtk_container_set_border_width (GTK_CONTAINER (hbox), 0);
 311
 312         key_by_from = gtk_radio_button_new_with_label(key_group,
 313                 _("Select key by your email address"));
 314         key_group = gtk_radio_button_get_group(GTK_RADIO_BUTTON(key_by_from));
 315         gtk_widget_show(key_by_from);
 316         gtk_box_pack_start(GTK_BOX(hbox), key_by_from, FALSE, FALSE, 0);
 317
 318         hbox = gtk_hbox_new (FALSE, 5);
 319         gtk_widget_show (hbox);
 320         gtk_box_pack_start (GTK_BOX (vbox2), hbox, FALSE, FALSE, 0);
 321         gtk_container_set_border_width (GTK_CONTAINER (hbox), 0);
 322
 323         key_custom = gtk_radio_button_new_with_label(key_group,
 324                 _("Specify key manually"));
 325         key_group = gtk_radio_button_get_group(GTK_RADIO_BUTTON(key_custom));
 326         gtk_widget_show(key_custom);
 327         gtk_box_pack_start(GTK_BOX(hbox), key_custom, FALSE, FALSE, 0);
 328
 329         hbox = gtk_hbox_new (FALSE, 5);
 330         gtk_widget_show (hbox);
 331         gtk_box_pack_start (GTK_BOX (vbox2), hbox, FALSE, FALSE, 0);
 332         gtk_container_set_border_width (GTK_CONTAINER (hbox), 0);
 333
 334         keyid_label = gtk_label_new(_("User or key ID:"));
 335         gtk_widget_show(keyid_label);
 336         gtk_label_set_justify(GTK_LABEL(keyid_label), GTK_JUSTIFY_LEFT);
 337         gtk_box_pack_start(GTK_BOX(hbox), keyid_label, FALSE, FALSE, 0);
 338
 339         keyid = gtk_entry_new();
 340         gtk_widget_show(keyid);
 341         gtk_box_pack_start(GTK_BOX(hbox), keyid, FALSE, FALSE, 0);
 342
 343         config = prefs_gpg_account_get_config(account);
 344         switch (config->sign_key) {
 345         case SIGN_KEY_DEFAULT:
 346                 gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(key_default), TRUE);
 347                 gtk_widget_set_sensitive(GTK_WIDGET(keyid_label), FALSE);
 348                 gtk_widget_set_sensitive(GTK_WIDGET(keyid), FALSE);
 349                 break;
 350         case SIGN_KEY_BY_FROM:
 351                 gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(key_by_from), TRUE);
 352                 gtk_widget_set_sensitive(GTK_WIDGET(keyid_label), FALSE);
 353                 gtk_widget_set_sensitive(GTK_WIDGET(keyid), FALSE);
 354                 break;
 355         case SIGN_KEY_CUSTOM:
 356                 gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(key_custom), TRUE);
 357                 gtk_widget_set_sensitive(GTK_WIDGET(keyid_label), TRUE);
 358                 gtk_widget_set_sensitive(GTK_WIDGET(keyid), TRUE);
 359                 break;
 360         }
 361
 362         hbox = gtk_hbox_new (FALSE, 5);
 363         gtk_widget_show (hbox);
 364         gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
 365
 366         new_key_box = gtk_hbox_new(FALSE, 6);
 367         gtk_widget_show(new_key_box);
 368         gtk_box_pack_start(GTK_BOX(hbox), new_key_box, FALSE, FALSE, 0);
 369
 370         image = gtk_image_new_from_stock(GTK_STOCK_DIALOG_WARNING,
 371                         GTK_ICON_SIZE_SMALL_TOOLBAR);
 372
 373         gtk_box_pack_start(GTK_BOX(new_key_box), image, FALSE, FALSE, 0);
 374         new_key_label = gtk_label_new(
 375                         _("No secret key found."));
 376         gtk_box_pack_start(GTK_BOX(new_key_box), new_key_label, FALSE, FALSE, 0);
 377
 378         new_key_btn = gtk_button_new_with_label(_("Generate a new key pair"));
 379         gtk_widget_show(new_key_btn);
 380         gtk_box_pack_start(GTK_BOX(hbox), new_key_btn, FALSE, FALSE, 0);
 381
 382         if (config->sign_key_id != NULL)
 383                 gtk_entry_set_text(GTK_ENTRY(keyid), config->sign_key_id);
 384
 385         g_signal_connect(G_OBJECT(key_custom), "toggled", G_CALLBACK(key_custom_toggled), page);
 386         g_signal_connect(G_OBJECT(new_key_btn), "clicked", G_CALLBACK(new_key_clicked), page);
 387
 388         page->key_default = key_default;
 389         page->key_by_from = key_by_from;
 390         page->key_custom = key_custom;
 391         page->keyid = keyid;
 392         page->keyid_label = keyid_label;
 393         page->new_key_box = new_key_box;
 394
 395         page->page.widget = vbox;
 396         page->account = account;
 397         prefs_gpg_update_sens(page);
 398 }
 399
 400 static void prefs_gpg_account_destroy_widget_func(PrefsPage *_page)
 401 {
 402         /* nothing to do here */
 403 }
 404
 405 static void prefs_gpg_account_save_func(PrefsPage *_page)
 406 {
 407         struct GPGAccountPage *page = (struct GPGAccountPage *) _page;
 408         GPGAccountConfig *config;
 409
 410         config = prefs_gpg_account_get_config(page->account);
 411
 412         if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(page->key_default)))
 413                 config->sign_key = SIGN_KEY_DEFAULT;
 414         else if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(page->key_by_from)))
 415                 config->sign_key = SIGN_KEY_BY_FROM;
 416         else if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(page->key_custom))) {
 417                 config->sign_key = SIGN_KEY_CUSTOM;
 418                 g_free(config->sign_key_id);
 419                 config->sign_key_id = gtk_editable_get_chars(GTK_EDITABLE(page->keyid), 0, -1);
 420         }
 421
 422         prefs_gpg_account_set_config(page->account, config);
 423         prefs_gpg_account_free_config(config);
 424 }
 425
 426 GPGConfig *prefs_gpg_get_config(void)
 427 {
 428         return &prefs_gpg;
 429 }
 430
 431 void prefs_gpg_save_config(void)
 432 {
 433         PrefFile *pfile;
 434         gchar *rcpath;
 435
 436         debug_print("Saving GPG config\n");
 437
 438         rcpath = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S, COMMON_RC, NULL);
 439         pfile = prefs_write_open(rcpath);
 440         g_free(rcpath);
 441         if (!pfile || (prefs_set_block_label(pfile, "GPG") < 0))
 442                 return;
 443
 444         if (prefs_write_param(param, pfile->fp) < 0) {
 445                 g_warning("failed to write GPG configuration to file\n");
 446                 prefs_file_close_revert(pfile);
 447                 return;
 448         }
 449         if (fprintf(pfile->fp, "\n") < 0) {
 450                 FILE_OP_ERROR(rcpath, "fprintf");
 451                 prefs_file_close_revert(pfile);
 452         } else
 453                 prefs_file_close(pfile);
 454 }
 455
 456 struct GPGAccountConfig *prefs_gpg_account_get_config(PrefsAccount *account)
 457 {
 458         GPGAccountConfig *config;
 459         const gchar *confstr;
 460         gchar **strv;
 461
 462         config = g_new0(GPGAccountConfig, 1);
 463         config->sign_key = SIGN_KEY_DEFAULT;
 464         config->sign_key_id = NULL;
 465
 466         confstr = prefs_account_get_privacy_prefs(account, "gpg");
 467         if (confstr == NULL)
 468                 return config;
 469
 470         strv = g_strsplit(confstr, ";", 0);
 471         if (strv[0] != NULL) {
 472                 if (!strcmp(strv[0], "DEFAULT"))
 473                         config->sign_key = SIGN_KEY_DEFAULT;
 474                 if (!strcmp(strv[0], "BY_FROM"))
 475                         config->sign_key = SIGN_KEY_BY_FROM;
 476                 if (!strcmp(strv[0], "CUSTOM")) {
 477                         if (strv[1] != NULL) {
 478                                 config->sign_key = SIGN_KEY_CUSTOM;
 479                                 config->sign_key_id = g_strdup(strv[1]);
 480                         } else
 481                                 config->sign_key = SIGN_KEY_DEFAULT;
 482                 }
 483         }
 484         g_strfreev(strv);
 485
 486         return config;
 487 }
 488
 489 void prefs_gpg_account_set_config(PrefsAccount *account, GPGAccountConfig *config)
 490 {
 491         gchar *confstr = NULL;
 492
 493         switch (config->sign_key) {
 494         case SIGN_KEY_DEFAULT:
 495                 confstr = g_strdup("DEFAULT");
 496                 break;
 497         case SIGN_KEY_BY_FROM:
 498                 confstr = g_strdup("BY_FROM");
 499                 break;
 500         case SIGN_KEY_CUSTOM:
 501                 confstr = g_strdup_printf("CUSTOM;%s", config->sign_key_id);
 502                 break;
 503         default:
 504                 confstr = g_strdup("");
 505                 g_warning("prefs_gpg_account_set_config: bad sign_key val\n");
 506         }
 507
 508         prefs_account_set_privacy_prefs(account, "gpg", confstr);
 509
 510         g_free(confstr);
 511 }
 512
 513 void prefs_gpg_account_free_config(GPGAccountConfig *config)
 514 {
 515         g_free(config->sign_key_id);
 516         g_free(config);
 517 }
 518
 519 static struct GPGPage gpg_page;
 520 static struct GPGAccountPage gpg_account_page;
 521
 522 void prefs_gpg_enable_agent(gboolean enable)
 523 {
 524         if (enable) {
 525                 if (saved_gpg_agent_info) {
 526                         g_setenv("GPG_AGENT_INFO",
 527                                  saved_gpg_agent_info, TRUE);
 528                         debug_print("set GPG_AGENT_INFO=%s\n",
 529                                 saved_gpg_agent_info);
 530                 } else {
 531                         debug_print("Can't enable gpg agent (no GPG_AGENT_INFO)\n");
 532                 }
 533         } else {
 534                 if (saved_gpg_agent_info) {
 535                         g_unsetenv("GPG_AGENT_INFO");
 536                         debug_print("unset GPG_AGENT_INFO=%s\n",
 537                                 saved_gpg_agent_info);
 538                 } else {
 539                         debug_print("Can't disable gpg agent (no GPG_AGENT_INFO)\n");
 540                 }
 541         }
 542 }
 543
 544 void prefs_gpg_init()
 545 {
 546         static gchar *path[3];
 547         gchar *rcpath;
 548         const gchar *tmp = NULL;
 549
 550         prefs_set_default(param);
 551         rcpath = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S, COMMON_RC, NULL);
 552         prefs_read_config(param, "GPG", rcpath, NULL);
 553         g_free(rcpath);
 554
 555         path[0] = _("Plugins");
 556         path[1] = _("GPG");
 557         path[2] = NULL;
 558
 559         gpg_page.page.path = path;
 560         gpg_page.page.create_widget = prefs_gpg_create_widget_func;
 561         gpg_page.page.destroy_widget = prefs_gpg_destroy_widget_func;
 562         gpg_page.page.save_page = prefs_gpg_save_func;
 563         gpg_page.page.weight = 30.0;
 564
 565         prefs_gtk_register_page((PrefsPage *) &gpg_page);
 566
 567         gpg_account_page.page.path = path;
 568         gpg_account_page.page.create_widget = prefs_gpg_account_create_widget_func;
 569         gpg_account_page.page.destroy_widget = prefs_gpg_account_destroy_widget_func;
 570         gpg_account_page.page.save_page = prefs_gpg_account_save_func;
 571         gpg_account_page.page.weight = 30.0;
 572
 573         prefs_account_register_page((PrefsPage *) &gpg_account_page);
 574
 575         tmp = g_getenv("GPG_AGENT_INFO");
 576         if (tmp)
 577                 saved_gpg_agent_info = g_strdup(tmp);
 578
 579         prefs_gpg_enable_agent(prefs_gpg_get_config()->use_gpg_agent);
 580 }
 581
 582 void prefs_gpg_done()
 583 {
 584         prefs_gtk_unregister_page((PrefsPage *) &gpg_page);
 585         prefs_account_unregister_page((PrefsPage *) &gpg_account_page);
 586         prefs_gpg_enable_agent(TRUE);
 587 }
 588
 589 gboolean prefs_gpg_should_skip_encryption_warning(const gchar *systemid)
 590 {
 591         gchar **systems = NULL;
 592         int i = 0;
 593         if (prefs_gpg_get_config()->skip_encryption_warning == NULL)
 594                 return FALSE;
 595         systems = g_strsplit(prefs_gpg_get_config()->skip_encryption_warning,
 596                                 ",", -1);
 597         while (systems && systems[i]) {
 598                 debug_print(" cmp %s %s\n", systems[i], systemid);
 599                 if (!strcmp(systems[i],systemid)) {
 600                         g_strfreev(systems);
 601                         return TRUE;
 602                 }
 603                 i++;
 604         }
 605         g_strfreev(systems);
 606         return FALSE;
 607 }
 608
 609 void prefs_gpg_add_skip_encryption_warning(const gchar *systemid)
 610 {
 611         gchar *tmp = NULL;
 612         if (prefs_gpg_get_config()->skip_encryption_warning == NULL)
 613                 prefs_gpg_get_config()->skip_encryption_warning =
 614                         g_strdup_printf("%s,", systemid);
 615         else if (!prefs_gpg_should_skip_encryption_warning(systemid)) {
 616                 tmp = g_strdup_printf("%s%s,",
 617                         prefs_gpg_get_config()->skip_encryption_warning,
 618                         systemid);
 619                 g_free(prefs_gpg_get_config()->skip_encryption_warning);
 620                 prefs_gpg_get_config()->skip_encryption_warning = tmp;
 621         }
 622         prefs_gpg_save_config();
 623 }
 624
 625 void prefs_gpg_remove_skip_encryption_warning(const gchar *systemid)
 626 {
 627         gchar **systems = NULL;
 628         int i = 0;
 629         if (prefs_gpg_get_config()->skip_encryption_warning == NULL)
 630                 return;
 631
 632         if (prefs_gpg_should_skip_encryption_warning(systemid)) {
 633                 systems = g_strsplit(prefs_gpg_get_config()->skip_encryption_warning,
 634                                 ",", -1);
 635                 g_free(prefs_gpg_get_config()->skip_encryption_warning);
 636                 prefs_gpg_get_config()->skip_encryption_warning = NULL;
 637
 638                 while (systems && systems[i]) {
 639                         if (!strcmp(systems[i],systemid)) {
 640                                 i++;
 641                                 continue;
 642                         }
 643                         prefs_gpg_add_skip_encryption_warning(systems[i]);
 644                         i++;
 645                 }
 646
 647                 g_strfreev(systems);
 648         }
 649         prefs_gpg_save_config();
 650 }