src/plugins/pgpcore/prefs_gpg.c

   1 /*
   2  * Claws Mail -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 2004-2011 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 "gtk/gtkutils.h"
  26 #include "utils.h"
  27 #include "prefs.h"
  28 #include "prefs_gtk.h"
  29 #include "prefs_gpg.h"
  30 #include "sgpgme.h"
  31
  32 struct GPGConfig prefs_gpg;
  33
  34 static PrefParam param[] = {
  35         /* Privacy */
  36         {"auto_check_signatures", "FALSE",
  37          &prefs_gpg.auto_check_signatures, P_BOOL,
  38          NULL, NULL, NULL},
  39         {"use_gpg_agent", "TRUE", &prefs_gpg.use_gpg_agent, P_BOOL,
  40          NULL, NULL, NULL},
  41         {"store_passphrase", "FALSE", &prefs_gpg.store_passphrase, P_BOOL,
  42          NULL, NULL, NULL},
  43         {"store_passphrase_timeout", "0",
  44          &prefs_gpg.store_passphrase_timeout, P_INT,
  45          NULL, NULL, NULL},
  46         {"passphrase_grab", "FALSE", &prefs_gpg.passphrase_grab, P_BOOL,
  47          NULL, NULL, NULL},
  48         {"gpg_warning", "TRUE", &prefs_gpg.gpg_warning, P_BOOL,
  49          NULL, NULL, NULL},
  50         {"gpg_ask_create_key", "TRUE", &prefs_gpg.gpg_ask_create_key, P_BOOL,
  51          NULL, NULL, NULL},
  52         {"skip_encryption_warning", "", &prefs_gpg.skip_encryption_warning, P_STRING,
  53          NULL, NULL, NULL},
  54
  55         {NULL, NULL, NULL, P_OTHER, NULL, NULL, NULL}
  56 };
  57
  58 static gchar *saved_gpg_agent_info = NULL;
  59
  60 struct GPGPage
  61 {
  62         PrefsPage page;
  63
  64         GtkWidget *checkbtn_auto_check_signatures;
  65         GtkWidget *checkbtn_use_gpg_agent;
  66         GtkWidget *checkbtn_store_passphrase;
  67         GtkWidget *spinbtn_store_passphrase;
  68         GtkWidget *checkbtn_passphrase_grab;
  69         GtkWidget *checkbtn_gpg_warning;
  70 };
  71
  72 static void prefs_gpg_create_widget_func(PrefsPage *_page,
  73                                          GtkWindow *window,
  74                                          gpointer data)
  75 {
  76         struct GPGPage *page = (struct GPGPage *) _page;
  77         struct GPGConfig *config;
  78
  79         GtkWidget *checkbtn_use_gpg_agent;
  80         GtkWidget *checkbtn_passphrase_grab;
  81         GtkWidget *checkbtn_store_passphrase;
  82         GtkWidget *checkbtn_auto_check_signatures;
  83         GtkWidget *checkbtn_gpg_warning;
  84         GtkWidget *hbox1;
  85         GtkWidget *vbox1, *vbox2;
  86         GtkWidget *label_expire1;
  87         GtkAdjustment *spinbtn_store_passphrase_adj;
  88         GtkWidget *spinbtn_store_passphrase;
  89         GtkWidget *label_expire2;
  90         GtkWidget *frame_passphrase;
  91
  92         vbox1 = gtk_vbox_new (FALSE, VSPACING);
  93         gtk_widget_show (vbox1);
  94         gtk_container_set_border_width (GTK_CONTAINER (vbox1), VBOX_BORDER);
  95
  96         vbox2 = gtk_vbox_new (FALSE, 0);
  97         gtk_widget_show (vbox2);
  98         gtk_box_pack_start (GTK_BOX (vbox1), vbox2, FALSE, FALSE, 0);
  99
 100         PACK_CHECK_BUTTON (vbox2, checkbtn_auto_check_signatures,
 101                         _("Automatically check signatures"));
 102
 103         vbox2 = gtkut_get_options_frame(vbox1, &frame_passphrase, _("Passphrase"));
 104
 105         PACK_CHECK_BUTTON (vbox2, checkbtn_use_gpg_agent,
 106                         _("Use gpg-agent to manage passwords"));
 107         if (saved_gpg_agent_info == NULL)
 108                 gtk_widget_set_sensitive(checkbtn_use_gpg_agent, FALSE);
 109
 110         PACK_CHECK_BUTTON (vbox2, checkbtn_store_passphrase,
 111                         _("Store passphrase in memory"));
 112
 113         SET_TOGGLE_SENSITIVITY_REVERSE(checkbtn_use_gpg_agent, checkbtn_store_passphrase);
 114
 115         hbox1 = gtk_hbox_new (FALSE, 8);
 116         gtk_widget_show (hbox1);
 117         gtk_box_pack_start (GTK_BOX (vbox2), hbox1, FALSE, FALSE, 0);
 118
 119         SET_TOGGLE_SENSITIVITY_REVERSE(checkbtn_use_gpg_agent, hbox1);
 120
 121         label_expire1 = gtk_label_new(_("Expire after"));
 122         gtk_widget_show (label_expire1);
 123         gtk_box_pack_start (GTK_BOX (hbox1), label_expire1, FALSE, FALSE, 0);
 124
 125         spinbtn_store_passphrase_adj =
 126             gtk_adjustment_new(1, 0, 1440, 1, 10, 0);
 127         spinbtn_store_passphrase =
 128             gtk_spin_button_new(GTK_ADJUSTMENT
 129                                 (spinbtn_store_passphrase_adj), 1, 0);
 130         gtk_widget_show(spinbtn_store_passphrase);
 131         gtk_box_pack_start(GTK_BOX(hbox1), spinbtn_store_passphrase, FALSE,
 132                            FALSE, 0);
 133         gtk_widget_set_size_request(spinbtn_store_passphrase, 64, -1);
 134         CLAWS_SET_TIP(spinbtn_store_passphrase,
 135                              _
 136                              ("Setting to '0' will store the passphrase for the whole session"));
 137         gtk_spin_button_set_numeric(GTK_SPIN_BUTTON
 138                                     (spinbtn_store_passphrase), TRUE);
 139
 140         label_expire2 = gtk_label_new(_("minute(s)"));
 141         gtk_widget_show(label_expire2);
 142         gtk_box_pack_start(GTK_BOX(hbox1), label_expire2, FALSE, FALSE, 0);
 143         gtk_misc_set_alignment(GTK_MISC(label_expire2), 0.0, 0.5);
 144
 145         SET_TOGGLE_SENSITIVITY (checkbtn_store_passphrase, label_expire1);
 146         SET_TOGGLE_SENSITIVITY (checkbtn_store_passphrase, spinbtn_store_passphrase);
 147         SET_TOGGLE_SENSITIVITY (checkbtn_store_passphrase, label_expire2);
 148
 149         PACK_CHECK_BUTTON (vbox2, checkbtn_passphrase_grab,
 150                         _("Grab input while entering a passphrase"));
 151
 152         vbox2 = gtk_vbox_new (FALSE, 0);
 153         gtk_widget_show (vbox2);
 154         gtk_box_pack_start (GTK_BOX (vbox1), vbox2, FALSE, FALSE, 0);
 155
 156         PACK_CHECK_BUTTON (vbox2, checkbtn_gpg_warning,
 157                         _("Display warning on start-up if GnuPG doesn't work"));
 158
 159         config = prefs_gpg_get_config();
 160
 161         gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(checkbtn_auto_check_signatures), config->auto_check_signatures);
 162         if (!getenv("GPG_AGENT_INFO"))
 163                 gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(checkbtn_use_gpg_agent), FALSE);
 164         else
 165                 gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(checkbtn_use_gpg_agent), config->use_gpg_agent);
 166         if (!gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(checkbtn_use_gpg_agent)))
 167                 gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(checkbtn_store_passphrase), config->store_passphrase);
 168         gtk_spin_button_set_value(GTK_SPIN_BUTTON(spinbtn_store_passphrase), (float) config->store_passphrase_timeout);
 169         gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(checkbtn_passphrase_grab), config->passphrase_grab);
 170         gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(checkbtn_gpg_warning), config->gpg_warning);
 171
 172         page->checkbtn_auto_check_signatures = checkbtn_auto_check_signatures;
 173         page->checkbtn_store_passphrase = checkbtn_store_passphrase;
 174         page->spinbtn_store_passphrase = spinbtn_store_passphrase;
 175         page->checkbtn_passphrase_grab = checkbtn_passphrase_grab;
 176         page->checkbtn_gpg_warning = checkbtn_gpg_warning;
 177         page->checkbtn_use_gpg_agent = checkbtn_use_gpg_agent;
 178         page->page.widget = vbox1;
 179 }
 180
 181 static void prefs_gpg_destroy_widget_func(PrefsPage *_page)
 182 {
 183 }
 184
 185 static void prefs_gpg_save_func(PrefsPage *_page)
 186 {
 187         struct GPGPage *page = (struct GPGPage *) _page;
 188         GPGConfig *config = prefs_gpg_get_config();
 189
 190         config->auto_check_signatures =
 191                 gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(page->checkbtn_auto_check_signatures));
 192         config->use_gpg_agent =
 193                 gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(page->checkbtn_use_gpg_agent));
 194         config->store_passphrase =
 195                 gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(page->checkbtn_store_passphrase));
 196         config->store_passphrase_timeout =
 197                 gtk_spin_button_get_value_as_int(GTK_SPIN_BUTTON(page->spinbtn_store_passphrase));
 198         config->passphrase_grab =
 199                 gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(page->checkbtn_passphrase_grab));
 200         config->gpg_warning =
 201                 gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(page->checkbtn_gpg_warning));
 202
 203         prefs_gpg_enable_agent(config->use_gpg_agent);
 204
 205         prefs_gpg_save_config();
 206 }
 207
 208 struct GPGAccountPage
 209 {
 210         PrefsPage page;
 211
 212         GtkWidget *key_default;
 213         GtkWidget *key_by_from;
 214         GtkWidget *key_custom;
 215         GtkWidget *keyid;
 216         GtkWidget *keyid_label;
 217         GtkWidget *new_key_label;
 218         GtkWidget *new_key_btn;
 219         GtkWidget *new_key_box;
 220
 221         PrefsAccount *account;
 222 };
 223
 224 void key_custom_toggled(GtkToggleButton *togglebutton, gpointer user_data)
 225 {
 226         struct GPGAccountPage *page = (struct GPGAccountPage *) user_data;
 227         gboolean active;
 228
 229         active = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(page->key_custom));
 230         gtk_widget_set_sensitive(GTK_WIDGET(page->keyid_label), active);
 231         gtk_widget_set_sensitive(GTK_WIDGET(page->keyid), active);
 232         if (!active)
 233                 gtk_editable_delete_text(GTK_EDITABLE(page->keyid), 0, -1);
 234 }
 235
 236 static void prefs_gpg_update_sens(struct GPGAccountPage *page)
 237 {
 238         gboolean active;
 239         active = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(page->key_custom));
 240         if (sgpgme_has_secret_key()) {
 241                 gtk_widget_hide(page->new_key_box);
 242                 gtk_widget_set_sensitive(page->key_default, TRUE);
 243                 gtk_widget_set_sensitive(page->key_by_from, TRUE);
 244                 gtk_widget_set_sensitive(page->key_custom, TRUE);
 245                 gtk_widget_set_sensitive(page->keyid, active);
 246                 gtk_widget_set_sensitive(page->keyid_label, active);
 247         } else {
 248                 gtk_widget_show(page->new_key_box);
 249                 gtk_widget_set_sensitive(page->key_default, FALSE);
 250                 gtk_widget_set_sensitive(page->key_by_from, FALSE);
 251                 gtk_widget_set_sensitive(page->key_custom, FALSE);
 252                 gtk_widget_set_sensitive(page->keyid, FALSE);
 253                 gtk_widget_set_sensitive(page->keyid_label, FALSE);
 254         }
 255 }
 256
 257 static void new_key_clicked(GtkWidget *widget, gpointer user_data)
 258 {
 259         struct GPGAccountPage *page = (struct GPGAccountPage *) user_data;
 260         sgpgme_create_secret_key(page->account, FALSE);
 261         prefs_gpg_update_sens(page);
 262 }
 263
 264 static void prefs_gpg_account_create_widget_func(PrefsPage *_page,
 265                                                  GtkWindow *window,
 266                                                  gpointer data)
 267 {
 268         struct GPGAccountPage *page = (struct GPGAccountPage *) _page;
 269         PrefsAccount *account = (PrefsAccount *) data;
 270         GPGAccountConfig *config;
 271
 272         GtkWidget *vbox;
 273         GtkWidget *frame1;
 274         GtkWidget *vbox2;
 275         GtkWidget *hbox;
 276         GSList *key_group = NULL;
 277         GtkWidget *key_default;
 278         GtkWidget *key_by_from;
 279         GtkWidget *key_custom;
 280         GtkWidget *keyid_label;
 281         GtkWidget *keyid;
 282         GtkWidget *image;
 283         GtkWidget *new_key_label;
 284         GtkWidget *new_key_btn;
 285         GtkWidget *new_key_box;
 286
 287         vbox = gtk_vbox_new(FALSE, VSPACING);
 288         gtk_container_set_border_width (GTK_CONTAINER (vbox), VBOX_BORDER);
 289         gtk_widget_show(vbox);
 290
 291         vbox2 = gtkut_get_options_frame(vbox, &frame1, _("Sign key"));
 292
 293         hbox = gtk_hbox_new (FALSE, 5);
 294         gtk_widget_show (hbox);
 295         gtk_box_pack_start (GTK_BOX (vbox2), hbox, FALSE, FALSE, 0);
 296         gtk_container_set_border_width (GTK_CONTAINER (hbox), 0);
 297
 298         key_default = gtk_radio_button_new_with_label(key_group,
 299                         _("Use default GnuPG key"));
 300         key_group = gtk_radio_button_get_group(GTK_RADIO_BUTTON(key_default));
 301         gtk_widget_show(key_default);
 302         gtk_box_pack_start(GTK_BOX(hbox), key_default, FALSE, FALSE, 0);
 303
 304         hbox = gtk_hbox_new (FALSE, 5);
 305         gtk_widget_show (hbox);
 306         gtk_box_pack_start (GTK_BOX (vbox2), hbox, FALSE, FALSE, 0);
 307         gtk_container_set_border_width (GTK_CONTAINER (hbox), 0);
 308
 309         key_by_from = gtk_radio_button_new_with_label(key_group,
 310                 _("Select key by your email address"));
 311         key_group = gtk_radio_button_get_group(GTK_RADIO_BUTTON(key_by_from));
 312         gtk_widget_show(key_by_from);
 313         gtk_box_pack_start(GTK_BOX(hbox), key_by_from, FALSE, FALSE, 0);
 314
 315         hbox = gtk_hbox_new (FALSE, 5);
 316         gtk_widget_show (hbox);
 317         gtk_box_pack_start (GTK_BOX (vbox2), hbox, FALSE, FALSE, 0);
 318         gtk_container_set_border_width (GTK_CONTAINER (hbox), 0);
 319
 320         key_custom = gtk_radio_button_new_with_label(key_group,
 321                 _("Specify key manually"));
 322         key_group = gtk_radio_button_get_group(GTK_RADIO_BUTTON(key_custom));
 323         gtk_widget_show(key_custom);
 324         gtk_box_pack_start(GTK_BOX(hbox), key_custom, FALSE, FALSE, 0);
 325
 326         hbox = gtk_hbox_new (FALSE, 5);
 327         gtk_widget_show (hbox);
 328         gtk_box_pack_start (GTK_BOX (vbox2), hbox, FALSE, FALSE, 0);
 329         gtk_container_set_border_width (GTK_CONTAINER (hbox), 0);
 330
 331         keyid_label = gtk_label_new(_("User or key ID:"));
 332         gtk_widget_show(keyid_label);
 333         gtk_label_set_justify(GTK_LABEL(keyid_label), GTK_JUSTIFY_LEFT);
 334         gtk_box_pack_start(GTK_BOX(hbox), keyid_label, FALSE, FALSE, 0);
 335
 336         keyid = gtk_entry_new();
 337         gtk_widget_show(keyid);
 338         gtk_box_pack_start(GTK_BOX(hbox), keyid, FALSE, FALSE, 0);
 339
 340         config = prefs_gpg_account_get_config(account);
 341         switch (config->sign_key) {
 342         case SIGN_KEY_DEFAULT:
 343                 gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(key_default), TRUE);
 344                 gtk_widget_set_sensitive(GTK_WIDGET(keyid_label), FALSE);
 345                 gtk_widget_set_sensitive(GTK_WIDGET(keyid), FALSE);
 346                 break;
 347         case SIGN_KEY_BY_FROM:
 348                 gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(key_by_from), TRUE);
 349                 gtk_widget_set_sensitive(GTK_WIDGET(keyid_label), FALSE);
 350                 gtk_widget_set_sensitive(GTK_WIDGET(keyid), FALSE);
 351                 break;
 352         case SIGN_KEY_CUSTOM:
 353                 gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(key_custom), TRUE);
 354                 gtk_widget_set_sensitive(GTK_WIDGET(keyid_label), TRUE);
 355                 gtk_widget_set_sensitive(GTK_WIDGET(keyid), TRUE);
 356                 break;
 357         }
 358
 359         hbox = gtk_hbox_new (FALSE, 5);
 360         gtk_widget_show (hbox);
 361         gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
 362
 363         new_key_box = gtk_hbox_new(FALSE, 6);
 364         gtk_widget_show(new_key_box);
 365         gtk_box_pack_start(GTK_BOX(hbox), new_key_box, FALSE, FALSE, 0);
 366
 367         image = gtk_image_new_from_stock(GTK_STOCK_DIALOG_WARNING,
 368                         GTK_ICON_SIZE_SMALL_TOOLBAR);
 369
 370         gtk_box_pack_start(GTK_BOX(new_key_box), image, FALSE, FALSE, 0);
 371         new_key_label = gtk_label_new(
 372                         _("No secret key found."));
 373         gtk_box_pack_start(GTK_BOX(new_key_box), new_key_label, FALSE, FALSE, 0);
 374
 375         new_key_btn = gtk_button_new_with_label(_("Generate a new key pair"));
 376         gtk_widget_show(new_key_btn);
 377         gtk_box_pack_start(GTK_BOX(hbox), new_key_btn, FALSE, FALSE, 0);
 378
 379         if (config->sign_key_id != NULL)
 380                 gtk_entry_set_text(GTK_ENTRY(keyid), config->sign_key_id);
 381
 382         g_signal_connect(G_OBJECT(key_custom), "toggled", G_CALLBACK(key_custom_toggled), page);
 383         g_signal_connect(G_OBJECT(new_key_btn), "clicked", G_CALLBACK(new_key_clicked), page);
 384
 385         page->key_default = key_default;
 386         page->key_by_from = key_by_from;
 387         page->key_custom = key_custom;
 388         page->keyid = keyid;
 389         page->keyid_label = keyid_label;
 390         page->new_key_box = new_key_box;
 391
 392         page->page.widget = vbox;
 393         page->account = account;
 394         prefs_gpg_update_sens(page);
 395 }
 396
 397 static void prefs_gpg_account_destroy_widget_func(PrefsPage *_page)
 398 {
 399         /* nothing to do here */
 400 }
 401
 402 static void prefs_gpg_account_save_func(PrefsPage *_page)
 403 {
 404         struct GPGAccountPage *page = (struct GPGAccountPage *) _page;
 405         GPGAccountConfig *config;
 406
 407         config = prefs_gpg_account_get_config(page->account);
 408
 409         if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(page->key_default)))
 410                 config->sign_key = SIGN_KEY_DEFAULT;
 411         else if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(page->key_by_from)))
 412                 config->sign_key = SIGN_KEY_BY_FROM;
 413         else if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(page->key_custom))) {
 414                 config->sign_key = SIGN_KEY_CUSTOM;
 415                 g_free(config->sign_key_id);
 416                 config->sign_key_id = gtk_editable_get_chars(GTK_EDITABLE(page->keyid), 0, -1);
 417         }
 418
 419         prefs_gpg_account_set_config(page->account, config);
 420         prefs_gpg_account_free_config(config);
 421 }
 422
 423 GPGConfig *prefs_gpg_get_config(void)
 424 {
 425         return &prefs_gpg;
 426 }
 427
 428 void prefs_gpg_save_config(void)
 429 {
 430         PrefFile *pfile;
 431         gchar *rcpath;
 432
 433         debug_print("Saving GPG config\n");
 434
 435         rcpath = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S, COMMON_RC, NULL);
 436         pfile = prefs_write_open(rcpath);
 437         g_free(rcpath);
 438         if (!pfile || (prefs_set_block_label(pfile, "GPG") < 0))
 439                 return;
 440
 441         if (prefs_write_param(param, pfile->fp) < 0) {
 442                 g_warning("failed to write GPG configuration to file\n");
 443                 prefs_file_close_revert(pfile);
 444                 return;
 445         }
 446         if (fprintf(pfile->fp, "\n") < 0) {
 447                 FILE_OP_ERROR(rcpath, "fprintf");
 448                 prefs_file_close_revert(pfile);
 449         } else
 450                 prefs_file_close(pfile);
 451 }
 452
 453 struct GPGAccountConfig *prefs_gpg_account_get_config(PrefsAccount *account)
 454 {
 455         GPGAccountConfig *config;
 456         const gchar *confstr;
 457         gchar **strv;
 458
 459         config = g_new0(GPGAccountConfig, 1);
 460         config->sign_key = SIGN_KEY_DEFAULT;
 461         config->sign_key_id = NULL;
 462
 463         confstr = prefs_account_get_privacy_prefs(account, "gpg");
 464         if (confstr == NULL)
 465                 return config;
 466
 467         strv = g_strsplit(confstr, ";", 0);
 468         if (strv[0] != NULL) {
 469                 if (!strcmp(strv[0], "DEFAULT"))
 470                         config->sign_key = SIGN_KEY_DEFAULT;
 471                 if (!strcmp(strv[0], "BY_FROM"))
 472                         config->sign_key = SIGN_KEY_BY_FROM;
 473                 if (!strcmp(strv[0], "CUSTOM")) {
 474                         if (strv[1] != NULL) {
 475                                 config->sign_key = SIGN_KEY_CUSTOM;
 476                                 config->sign_key_id = g_strdup(strv[1]);
 477                         } else
 478                                 config->sign_key = SIGN_KEY_DEFAULT;
 479                 }
 480         }
 481         g_strfreev(strv);
 482
 483         return config;
 484 }
 485
 486 void prefs_gpg_account_set_config(PrefsAccount *account, GPGAccountConfig *config)
 487 {
 488         gchar *confstr = NULL;
 489
 490         switch (config->sign_key) {
 491         case SIGN_KEY_DEFAULT:
 492                 confstr = g_strdup("DEFAULT");
 493                 break;
 494         case SIGN_KEY_BY_FROM:
 495                 confstr = g_strdup("BY_FROM");
 496                 break;
 497         case SIGN_KEY_CUSTOM:
 498                 confstr = g_strdup_printf("CUSTOM;%s", config->sign_key_id);
 499                 break;
 500         default:
 501                 confstr = g_strdup("");
 502                 g_warning("prefs_gpg_account_set_config: bad sign_key val\n");
 503         }
 504
 505         prefs_account_set_privacy_prefs(account, "gpg", confstr);
 506
 507         g_free(confstr);
 508 }
 509
 510 void prefs_gpg_account_free_config(GPGAccountConfig *config)
 511 {
 512         g_free(config->sign_key_id);
 513         g_free(config);
 514 }
 515
 516 static struct GPGPage gpg_page;
 517 static struct GPGAccountPage gpg_account_page;
 518
 519 void prefs_gpg_enable_agent(gboolean enable)
 520 {
 521         if (enable) {
 522                 if (saved_gpg_agent_info) {
 523                         g_setenv("GPG_AGENT_INFO",
 524                                  saved_gpg_agent_info, TRUE);
 525                         debug_print("set GPG_AGENT_INFO=%s\n",
 526                                 saved_gpg_agent_info);
 527                 } else {
 528                         debug_print("Can't enable gpg agent (no GPG_AGENT_INFO)\n");
 529                 }
 530         } else {
 531                 if (saved_gpg_agent_info) {
 532                         g_unsetenv("GPG_AGENT_INFO");
 533                         debug_print("unset GPG_AGENT_INFO=%s\n",
 534                                 saved_gpg_agent_info);
 535                 } else {
 536                         debug_print("Can't disable gpg agent (no GPG_AGENT_INFO)\n");
 537                 }
 538         }
 539 }
 540
 541 void prefs_gpg_init()
 542 {
 543         static gchar *path[3];
 544         gchar *rcpath;
 545         const gchar *tmp = NULL;
 546
 547         prefs_set_default(param);
 548         rcpath = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S, COMMON_RC, NULL);
 549         prefs_read_config(param, "GPG", rcpath, NULL);
 550         g_free(rcpath);
 551
 552         path[0] = _("Plugins");
 553         path[1] = _("GPG");
 554         path[2] = NULL;
 555
 556         gpg_page.page.path = path;
 557         gpg_page.page.create_widget = prefs_gpg_create_widget_func;
 558         gpg_page.page.destroy_widget = prefs_gpg_destroy_widget_func;
 559         gpg_page.page.save_page = prefs_gpg_save_func;
 560         gpg_page.page.weight = 30.0;
 561
 562         prefs_gtk_register_page((PrefsPage *) &gpg_page);
 563
 564         gpg_account_page.page.path = path;
 565         gpg_account_page.page.create_widget = prefs_gpg_account_create_widget_func;
 566         gpg_account_page.page.destroy_widget = prefs_gpg_account_destroy_widget_func;
 567         gpg_account_page.page.save_page = prefs_gpg_account_save_func;
 568         gpg_account_page.page.weight = 30.0;
 569
 570         prefs_account_register_page((PrefsPage *) &gpg_account_page);
 571
 572         tmp = g_getenv("GPG_AGENT_INFO");
 573         if (tmp)
 574                 saved_gpg_agent_info = g_strdup(tmp);
 575
 576         prefs_gpg_enable_agent(prefs_gpg_get_config()->use_gpg_agent);
 577 }
 578
 579 void prefs_gpg_done()
 580 {
 581         prefs_gtk_unregister_page((PrefsPage *) &gpg_page);
 582         prefs_account_unregister_page((PrefsPage *) &gpg_account_page);
 583         prefs_gpg_enable_agent(TRUE);
 584 }
 585
 586 gboolean prefs_gpg_should_skip_encryption_warning(const gchar *systemid)
 587 {
 588         gchar **systems = NULL;
 589         int i = 0;
 590         if (prefs_gpg_get_config()->skip_encryption_warning == NULL)
 591                 return FALSE;
 592         systems = g_strsplit(prefs_gpg_get_config()->skip_encryption_warning,
 593                                 ",", -1);
 594         while (systems && systems[i]) {
 595                 debug_print(" cmp %s %s\n", systems[i], systemid);
 596                 if (!strcmp(systems[i],systemid)) {
 597                         g_strfreev(systems);
 598                         return TRUE;
 599                 }
 600                 i++;
 601         }
 602         g_strfreev(systems);
 603         return FALSE;
 604 }
 605
 606 void prefs_gpg_add_skip_encryption_warning(const gchar *systemid)
 607 {
 608         gchar *tmp = NULL;
 609         if (prefs_gpg_get_config()->skip_encryption_warning == NULL)
 610                 prefs_gpg_get_config()->skip_encryption_warning =
 611                         g_strdup_printf("%s,", systemid);
 612         else if (!prefs_gpg_should_skip_encryption_warning(systemid)) {
 613                 tmp = g_strdup_printf("%s%s,",
 614                         prefs_gpg_get_config()->skip_encryption_warning,
 615                         systemid);
 616                 g_free(prefs_gpg_get_config()->skip_encryption_warning);
 617                 prefs_gpg_get_config()->skip_encryption_warning = tmp;
 618         }
 619         prefs_gpg_save_config();
 620 }
 621
 622 void prefs_gpg_remove_skip_encryption_warning(const gchar *systemid)
 623 {
 624         gchar **systems = NULL;
 625         int i = 0;
 626         if (prefs_gpg_get_config()->skip_encryption_warning == NULL)
 627                 return;
 628
 629         if (prefs_gpg_should_skip_encryption_warning(systemid)) {
 630                 systems = g_strsplit(prefs_gpg_get_config()->skip_encryption_warning,
 631                                 ",", -1);
 632                 g_free(prefs_gpg_get_config()->skip_encryption_warning);
 633                 prefs_gpg_get_config()->skip_encryption_warning = NULL;
 634
 635                 while (systems && systems[i]) {
 636                         if (!strcmp(systems[i],systemid)) {
 637                                 i++;
 638                                 continue;
 639                         }
 640                         prefs_gpg_add_skip_encryption_warning(systems[i]);
 641                         i++;
 642                 }
 643
 644                 g_strfreev(systems);
 645         }
 646         prefs_gpg_save_config();
 647 }