src/inc.c

   1 /*
   2  * Claws Mail -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2016 Hiroyuki Yamamoto and 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 #ifdef HAVE_CONFIG_H
  20 #  include "config.h"
  21 #include "claws-features.h"
  22 #endif
  23
  24 #include "defs.h"
  25
  26 #include <glib.h>
  27 #include <glib/gi18n.h>
  28 #include <gtk/gtk.h>
  29 #include <stdio.h>
  30 #include <unistd.h>
  31 #include <string.h>
  32
  33 #include "main.h"
  34 #include "inc.h"
  35 #include "mainwindow.h"
  36 #include "folderview.h"
  37 #include "summaryview.h"
  38 #include "prefs_common.h"
  39 #include "prefs_account.h"
  40 #include "account.h"
  41 #include "procmsg.h"
  42 #include "proxy.h"
  43 #include "socket.h"
  44 #include "ssl.h"
  45 #include "pop.h"
  46 #include "recv.h"
  47 #include "mbox.h"
  48 #include "file-utils.h"
  49 #include "utils.h"
  50 #include "gtkutils.h"
  51 #include "statusbar.h"
  52 #include "msgcache.h"
  53 #include "manage_window.h"
  54 #include "stock_pixmap.h"
  55 #include "progressdialog.h"
  56 #include "inputdialog.h"
  57 #include "alertpanel.h"
  58 #include "folder.h"
  59 #include "filtering.h"
  60 #include "log.h"
  61 #include "hooks.h"
  62 #include "logwindow.h"
  63 #include "passwordstore.h"
  64
  65 extern SessionStats session_stats;
  66
  67 static GList *inc_dialog_list = NULL;
  68
  69 static time_t inc_offline_overridden_yes = 0;
  70 static time_t inc_offline_overridden_no  = 0;
  71
  72 guint inc_lock_count = 0;
  73
  74 static GdkPixbuf *currentpix;
  75 static GdkPixbuf *errorpix;
  76 static GdkPixbuf *okpix;
  77
  78 #define MESSAGEBUFSIZE  8192
  79
  80 static void inc_update_stats(gint new_msgs);
  81 static void inc_finished                (MainWindow             *mainwin,
  82                                          gboolean                new_messages,
  83                                          gboolean                autocheck);
  84 static gint inc_account_mail_real       (MainWindow             *mainwin,
  85                                          PrefsAccount           *account);
  86
  87 static IncProgressDialog *inc_progress_dialog_create
  88                                         (gboolean                autocheck);
  89 static void inc_progress_dialog_set_list(IncProgressDialog      *inc_dialog);
  90 static void inc_progress_dialog_destroy (IncProgressDialog      *inc_dialog);
  91
  92 static IncSession *inc_session_new      (PrefsAccount           *account);
  93 static void inc_session_destroy         (IncSession             *session);
  94 static gint inc_start                   (IncProgressDialog      *inc_dialog);
  95 static IncState inc_pop3_session_do     (IncSession             *session);
  96
  97 static void inc_progress_dialog_update  (IncProgressDialog      *inc_dialog,
  98                                          IncSession             *inc_session);
  99
 100 static void inc_progress_dialog_set_label
 101                                         (IncProgressDialog      *inc_dialog,
 102                                          IncSession             *inc_session);
 103 static void inc_progress_dialog_set_progress
 104                                         (IncProgressDialog      *inc_dialog,
 105                                          IncSession             *inc_session);
 106
 107 static void inc_progress_dialog_update_periodic
 108                                         (IncProgressDialog      *inc_dialog,
 109                                          IncSession             *inc_session);
 110
 111 static gint inc_recv_data_progressive   (Session        *session,
 112                                          guint           cur_len,
 113                                          guint           total_len,
 114                                          gpointer        data);
 115 static gint inc_recv_data_finished      (Session        *session,
 116                                          guint           len,
 117                                          gpointer        data);
 118 static gint inc_recv_message            (Session        *session,
 119                                          const gchar    *msg,
 120                                          gpointer        data);
 121 static gint inc_drop_message            (Pop3Session    *session,
 122                                          const gchar    *file);
 123
 124 static void inc_put_error               (IncState        istate,
 125                                          Pop3Session    *session);
 126
 127 static void inc_showlog_cb              (GtkWidget      *widget,
 128                                          gpointer        data);
 129 static void inc_cancel_cb               (GtkWidget      *widget,
 130                                          gpointer        data);
 131 static gint inc_dialog_delete_cb        (GtkWidget      *widget,
 132                                          GdkEventAny    *event,
 133                                          gpointer        data);
 134
 135 static gint get_spool                   (FolderItem     *dest,
 136                                          const gchar    *mbox,
 137                                          PrefsAccount   *account);
 138
 139 static gint inc_spool_account(PrefsAccount *account);
 140 static void inc_autocheck_timer_set_interval    (guint           interval);
 141 static gint inc_autocheck_func                  (gpointer        data);
 142
 143 static void inc_notify_cmd              (gint new_msgs,
 144                                          gboolean notify);
 145
 146 static void inc_update_stats(gint new_msgs)
 147 {
 148         /* update session statistics */
 149         session_stats.received += new_msgs;
 150 }
 151
 152 /**
 153  * inc_finished:
 154  * @mainwin: Main window.
 155  * @new_messages: TRUE if some messages have been received.
 156  *
 157  * Update the folder view and the summary view after receiving
 158  * messages.  If @new_messages is FALSE, this function avoids unneeded
 159  * updating.
 160  **/
 161 static void inc_finished(MainWindow *mainwin, gboolean new_messages, gboolean autocheck)
 162 {
 163         if (prefs_common.scan_all_after_inc)
 164                 folderview_check_new(NULL);
 165
 166         if (!autocheck && new_messages && prefs_common.open_inbox_on_inc) {
 167                 FolderItem *item = NULL;
 168
 169                 if (cur_account && cur_account->inbox)
 170                         item = folder_find_item_from_identifier(cur_account->inbox);
 171                 if (item == NULL && cur_account && cur_account->folder)
 172                         item = cur_account->folder->inbox;
 173                 if (item == NULL)
 174                         item = folder_get_default_inbox();
 175
 176                 folderview_unselect(mainwin->folderview);
 177                 folderview_select(mainwin->folderview, item);
 178         }
 179         statusbar_progress_all(0,0,0);
 180 }
 181
 182 void inc_mail(MainWindow *mainwin, gboolean notify)
 183 {
 184         gint new_msgs = 0;
 185         gint account_new_msgs = 0;
 186
 187         if (inc_lock_count) return;
 188
 189         if (prefs_common.work_offline &&
 190             !inc_offline_should_override(TRUE,
 191                 _("Claws Mail needs network access in order "
 192                   "to get mails.")))
 193                 return;
 194
 195         inc_lock();
 196         inc_autocheck_timer_remove();
 197         main_window_lock(mainwin);
 198
 199         if (prefs_common.use_extinc && prefs_common.extinc_cmd) {
 200                 /* external incorporating program */
 201                 if (execute_command_line(prefs_common.extinc_cmd, FALSE, NULL) < 0) {
 202                         main_window_unlock(mainwin);
 203                         inc_autocheck_timer_set();
 204                         inc_unlock();
 205                         return;
 206                 }
 207         } else {
 208                 account_new_msgs = inc_account_mail_real(mainwin, cur_account);
 209                 if (account_new_msgs > 0)
 210                         new_msgs += account_new_msgs;
 211         }
 212
 213         inc_update_stats(new_msgs);
 214         inc_finished(mainwin, new_msgs > 0, FALSE);
 215         main_window_unlock(mainwin);
 216         inc_notify_cmd(new_msgs, notify);
 217         inc_autocheck_timer_set();
 218         inc_unlock();
 219 }
 220
 221 void inc_pop_before_smtp(PrefsAccount *acc)
 222 {
 223         IncProgressDialog *inc_dialog;
 224         IncSession *session;
 225         MainWindow *mainwin;
 226
 227         mainwin = mainwindow_get_mainwindow();
 228
 229         session = inc_session_new(acc);
 230         if (!session) return;
 231         POP3_SESSION(session->session)->pop_before_smtp = TRUE;
 232
 233         inc_dialog = inc_progress_dialog_create(FALSE);
 234         inc_dialog->queue_list = g_list_append(inc_dialog->queue_list,
 235                                                session);
 236         /* FIXME: assumes to attach to first main window */
 237         inc_dialog->mainwin = mainwin;
 238         inc_progress_dialog_set_list(inc_dialog);
 239
 240         if (mainwin) {
 241                 toolbar_main_set_sensitive(mainwin);
 242                 main_window_set_menu_sensitive(mainwin);
 243         }
 244
 245         inc_start(inc_dialog);
 246 }
 247
 248 static gint inc_account_mail_real(MainWindow *mainwin, PrefsAccount *account)
 249 {
 250         IncProgressDialog *inc_dialog;
 251         IncSession *session;
 252
 253         switch (account->protocol) {
 254         case A_IMAP4:
 255         case A_NNTP:
 256                 /* Melvin: bug [14]
 257                  * FIXME: it should return foldeview_check_new() value.
 258                  * TODO: do it when bug [19] is fixed (IMAP folder sets
 259                  * an incorrect new message count)
 260                  */
 261                 folderview_check_new(FOLDER(account->folder));
 262                 return 0;
 263         case A_POP3:
 264                 session = inc_session_new(account);
 265                 if (!session) return 0;
 266
 267                 inc_dialog = inc_progress_dialog_create(FALSE);
 268                 inc_dialog->queue_list = g_list_append(inc_dialog->queue_list,
 269                                                        session);
 270                 inc_dialog->mainwin = mainwin;
 271                 inc_progress_dialog_set_list(inc_dialog);
 272
 273                 if (mainwin) {
 274                         toolbar_main_set_sensitive(mainwin);
 275                         main_window_set_menu_sensitive(mainwin);
 276                 }
 277
 278                 return inc_start(inc_dialog);
 279
 280         case A_LOCAL:
 281                 return inc_spool_account(account);
 282
 283         default:
 284                 break;
 285         }
 286         return 0;
 287 }
 288
 289 gint inc_account_mail(MainWindow *mainwin, PrefsAccount *account)
 290 {
 291         gint new_msgs;
 292
 293         if (inc_lock_count) return 0;
 294
 295         if (account->receive_in_progress) return 0;
 296
 297         if (prefs_common.work_offline &&
 298             !inc_offline_should_override(TRUE,
 299                 _("Claws Mail needs network access in order "
 300                   "to get mails.")))
 301                 return 0;
 302
 303         inc_autocheck_timer_remove();
 304         main_window_lock(mainwin);
 305
 306         new_msgs = inc_account_mail_real(mainwin, account);
 307
 308         inc_update_stats(new_msgs);
 309         inc_finished(mainwin, new_msgs > 0, FALSE);
 310         main_window_unlock(mainwin);
 311         inc_autocheck_timer_set();
 312
 313         return new_msgs;
 314 }
 315
 316 void inc_account_list_mail(MainWindow *mainwin, GList *account_list, gboolean autocheck,
 317                           gboolean notify)
 318 {
 319         GList *list, *queue_list = NULL;
 320         IncProgressDialog *inc_dialog;
 321         gint new_msgs = 0, num;
 322
 323         if (prefs_common.work_offline &&
 324             !inc_offline_should_override( (autocheck == FALSE),
 325                 _("Claws Mail needs network access in order "
 326                   "to get mails.")))
 327                 return;
 328
 329         if (inc_lock_count) return;
 330
 331         main_window_lock(mainwin);
 332
 333         if (!account_list) {
 334                 inc_update_stats(new_msgs);
 335                 inc_finished(mainwin, new_msgs > 0, autocheck);
 336                 main_window_unlock(mainwin);
 337                 inc_notify_cmd(new_msgs, notify);
 338                 return;
 339         }
 340
 341         if (prefs_common.use_extinc && prefs_common.extinc_cmd) {
 342                 /* external incorporating program */
 343                 if (execute_command_line(prefs_common.extinc_cmd, FALSE, NULL) < 0) {
 344                         log_error(LOG_PROTOCOL, _("%s failed\n"), prefs_common.extinc_cmd);
 345
 346                         main_window_unlock(mainwin);
 347                         return;
 348                 }
 349         }
 350
 351         /* Check all accounts in the list, one by one. */
 352         for (list = account_list; list != NULL; list = list->next) {
 353                 PrefsAccount *account = list->data;
 354
 355                 if (account == NULL) {
 356                         debug_print("INC: Huh? inc_account_list_mail() got a NULL account, this should not happen!\n");
 357                         continue;
 358                 }
 359
 360                 debug_print("INC: checking account %d\n", account->account_id);
 361                 switch (account->protocol) {
 362                         case A_POP3:
 363                                 if (!(account->receive_in_progress)) {
 364                                         IncSession *session = inc_session_new(account);
 365
 366                                         if (session != NULL) {
 367                                                 debug_print("INC: adding POP3 account %d to inc queue\n",
 368                                                                 account->account_id);
 369                                                 queue_list = g_list_append(queue_list, session);
 370                                         }
 371                                 }
 372                                 break;
 373
 374                         case A_IMAP4:
 375                         case A_NNTP:
 376                                 new_msgs += folderview_check_new(FOLDER(account->folder));
 377                                 break;
 378
 379                         case A_LOCAL:
 380                                 num = inc_spool_account(account);
 381                                 if (num > 0)
 382                                         new_msgs += num;
 383                                 break;
 384
 385                         case A_NONE:
 386                                 /* Nothing to do here, it's a SMTP-only account. */
 387                                 break;
 388
 389                         default:
 390                                 debug_print("INC: encountered account %d with unknown protocol %d, ignoring\n",
 391                                                 account->account_id, account->protocol);
 392                                 break;
 393                 }
 394         }
 395
 396
 397
 398         if (queue_list) {
 399                 inc_dialog = inc_progress_dialog_create(autocheck);
 400                 inc_dialog->queue_list = queue_list;
 401                 inc_dialog->mainwin = mainwin;
 402                 inc_progress_dialog_set_list(inc_dialog);
 403
 404                 toolbar_main_set_sensitive(mainwin);
 405                 main_window_set_menu_sensitive(mainwin);
 406                 new_msgs += inc_start(inc_dialog);
 407         }
 408
 409         inc_update_stats(new_msgs);
 410         inc_finished(mainwin, new_msgs > 0, autocheck);
 411         main_window_unlock(mainwin);
 412         inc_notify_cmd(new_msgs, notify);
 413 }
 414
 415 void inc_all_account_mail(MainWindow *mainwin, gboolean autocheck,
 416                           gboolean check_at_startup, gboolean notify)
 417 {
 418         GList *list, *list2 = NULL;
 419         gboolean condition;
 420         gboolean hide_dialog = FALSE;
 421
 422         debug_print("INC: inc_all_account_mail(), autocheck: %s\n",
 423                         autocheck ? "YES" : "NO");
 424
 425         /* Collect list of accounts which use the global autocheck interval. */
 426         for (list = account_get_list(); list != NULL; list = list->next) {
 427                 PrefsAccount *account = list->data;
 428
 429                 /* Nothing to do for SMTP-only accounts. */
 430                 if (account->protocol == A_NONE)
 431                         continue;
 432
 433                 /* Set up condition which decides whether or not to check
 434                  * this account, based on whether we're doing global autocheck
 435                  * or a check at startup or a manual 'Get all' check. */
 436                 if (autocheck)
 437                         condition = prefs_common_get_prefs()->autochk_newmail
 438                                 && account->autochk_use_default;
 439                 else if (check_at_startup || (!check_at_startup && !autocheck))
 440                         condition = account->recv_at_getall;
 441
 442                 if (condition) {
 443                         debug_print("INC: will check account %d\n", account->account_id);
 444                         list2 = g_list_append(list2, account);
 445                 }
 446         }
 447
 448         /* Do the check on the collected accounts. */
 449         if (list2 != NULL) {
 450                 if (autocheck || check_at_startup)
 451                         hide_dialog = TRUE;
 452                 inc_account_list_mail(mainwin, list2, hide_dialog, notify);
 453                 g_list_free(list2);
 454         }
 455 }
 456
 457 static void inc_progress_dialog_size_allocate_cb(GtkWidget *widget,
 458                                          GtkAllocation *allocation)
 459 {
 460         cm_return_if_fail(allocation != NULL);
 461
 462         prefs_common.receivewin_width = allocation->width;
 463         prefs_common.receivewin_height = allocation->height;
 464 }
 465
 466 static IncProgressDialog *inc_progress_dialog_create(gboolean autocheck)
 467 {
 468         IncProgressDialog *dialog;
 469         ProgressDialog *progress;
 470         static GdkGeometry geometry;
 471
 472         dialog = g_new0(IncProgressDialog, 1);
 473
 474         progress = progress_dialog_create();
 475         gtk_window_set_title(GTK_WINDOW(progress->window),
 476                              _("Retrieving new messages"));
 477         g_signal_connect(G_OBJECT(progress->showlog_btn), "clicked",
 478                          G_CALLBACK(inc_showlog_cb), dialog);
 479         g_signal_connect(G_OBJECT(progress->cancel_btn), "clicked",
 480                          G_CALLBACK(inc_cancel_cb), dialog);
 481         g_signal_connect(G_OBJECT(progress->window), "delete_event",
 482                          G_CALLBACK(inc_dialog_delete_cb), dialog);
 483         g_signal_connect(G_OBJECT(progress->window), "size_allocate",
 484                          G_CALLBACK(inc_progress_dialog_size_allocate_cb), NULL);
 485         /* manage_window_set_transient(GTK_WINDOW(progress->window)); */
 486
 487         progress_dialog_get_fraction(progress);
 488
 489         stock_pixbuf_gdk(STOCK_PIXMAP_COMPLETE, &okpix);
 490         stock_pixbuf_gdk(STOCK_PIXMAP_CONTINUE, &currentpix);
 491         stock_pixbuf_gdk(STOCK_PIXMAP_ERROR, &errorpix);
 492
 493         if (!geometry.min_height) {
 494                 geometry.min_width = 460;
 495                 geometry.min_height = 250;
 496         }
 497
 498         gtk_window_set_geometry_hints(GTK_WINDOW(progress->window), NULL, &geometry,
 499                                       GDK_HINT_MIN_SIZE);
 500         gtk_widget_set_size_request(progress->window, prefs_common.receivewin_width,
 501                                     prefs_common.receivewin_height);
 502
 503         if (prefs_common.recv_dialog_mode == RECV_DIALOG_ALWAYS ||
 504             (prefs_common.recv_dialog_mode == RECV_DIALOG_MANUAL &&
 505              !autocheck)) {
 506                 dialog->show_dialog = TRUE;
 507                 gtk_widget_show_now(progress->window);
 508         }
 509
 510         dialog->dialog = progress;
 511         g_get_current_time(&dialog->progress_tv);
 512         g_get_current_time(&dialog->folder_tv);
 513         dialog->queue_list = NULL;
 514         dialog->cur_row = 0;
 515
 516         inc_dialog_list = g_list_append(inc_dialog_list, dialog);
 517
 518         return dialog;
 519 }
 520
 521 static void inc_progress_dialog_set_list(IncProgressDialog *inc_dialog)
 522 {
 523         GList *list;
 524
 525         for (list = inc_dialog->queue_list; list != NULL; list = list->next) {
 526                 IncSession *session = list->data;
 527                 Pop3Session *pop3_session = POP3_SESSION(session->session);
 528
 529                 session->data = inc_dialog;
 530
 531                 progress_dialog_list_set(inc_dialog->dialog,
 532                                          -1, NULL,
 533                                          pop3_session->ac_prefs->account_name,
 534                                          _("Standby"));
 535         }
 536 }
 537
 538 static void inc_progress_dialog_clear(IncProgressDialog *inc_dialog)
 539 {
 540         progress_dialog_get_fraction(inc_dialog->dialog);
 541         progress_dialog_set_label(inc_dialog->dialog, "");
 542         if (inc_dialog->mainwin)
 543                 main_window_progress_off(inc_dialog->mainwin);
 544 }
 545
 546 static void inc_progress_dialog_destroy(IncProgressDialog *inc_dialog)
 547 {
 548         cm_return_if_fail(inc_dialog != NULL);
 549
 550         inc_dialog_list = g_list_remove(inc_dialog_list, inc_dialog);
 551
 552         if (inc_dialog->mainwin)
 553                 main_window_progress_off(inc_dialog->mainwin);
 554         progress_dialog_destroy(inc_dialog->dialog);
 555
 556         g_free(inc_dialog);
 557 }
 558
 559 static IncSession *inc_session_new(PrefsAccount *account)
 560 {
 561         IncSession *session;
 562
 563         cm_return_val_if_fail(account != NULL, NULL);
 564
 565         if (account->protocol != A_POP3)
 566                 return NULL;
 567         if (!account->recv_server || !account->userid)
 568                 return NULL;
 569
 570         session = g_new0(IncSession, 1);
 571
 572         session->session = pop3_session_new(account);
 573         session->session->data = session;
 574         POP3_SESSION(session->session)->drop_message = inc_drop_message;
 575         session_set_recv_message_notify(session->session,
 576                                         inc_recv_message, session);
 577         session_set_recv_data_progressive_notify(session->session,
 578                                                  inc_recv_data_progressive,
 579                                                  session);
 580         session_set_recv_data_notify(session->session,
 581                                      inc_recv_data_finished, session);
 582
 583         return session;
 584 }
 585
 586 static void inc_session_destroy(IncSession *session)
 587 {
 588         cm_return_if_fail(session != NULL);
 589
 590         session_destroy(session->session);
 591         g_free(session);
 592 }
 593
 594 static gint pop3_get_port(Pop3Session *pop3_session)
 595 {
 596 #ifdef USE_GNUTLS
 597         return pop3_session->ac_prefs->set_popport ?
 598                 pop3_session->ac_prefs->popport :
 599                 pop3_session->ac_prefs->ssl_pop == SSL_TUNNEL ? 995 : 110;
 600 #else
 601         return pop3_session->ac_prefs->set_popport ?
 602                 pop3_session->ac_prefs->popport : 110;
 603 #endif
 604 }
 605
 606 static gint inc_start(IncProgressDialog *inc_dialog)
 607 {
 608         IncSession *session;
 609         GList *qlist;
 610         Pop3Session *pop3_session;
 611         IncState inc_state;
 612         gint error_num = 0;
 613         gint new_msgs = 0;
 614         gchar *msg;
 615         gchar *fin_msg;
 616         FolderItem *processing, *inbox;
 617         GSList *msglist, *msglist_element;
 618         gboolean cancelled = FALSE;
 619
 620         qlist = inc_dialog->queue_list;
 621         while (qlist != NULL) {
 622                 GList *next = qlist->next;
 623
 624                 session = qlist->data;
 625                 pop3_session = POP3_SESSION(session->session);
 626                 pop3_session->user = g_strdup(pop3_session->ac_prefs->userid);
 627
 628                 if (inc_dialog->show_dialog)
 629                         manage_window_focus_in
 630                                 (inc_dialog->dialog->window,
 631                                  NULL, NULL);
 632
 633                 if (password_get(pop3_session->user,
 634                                         pop3_session->ac_prefs->recv_server,
 635                                         "pop3", pop3_get_port(pop3_session),
 636                                         &(pop3_session->pass))) {
 637                         /* NOP */;
 638                 } else if ((pop3_session->pass = passwd_store_get_account(
 639                                                 pop3_session->ac_prefs->account_id, PWS_ACCOUNT_RECV)) == NULL) {
 640                         gchar *pass;
 641
 642                         pass = input_dialog_query_password_keep
 643                                 (pop3_session->ac_prefs->recv_server,
 644                                  pop3_session->user,
 645                                  &(pop3_session->ac_prefs->session_passwd));
 646
 647                         if (pass) {
 648                                 pop3_session->pass = pass;
 649                         }
 650                 }
 651
 652                 if (inc_dialog->show_dialog)
 653                         manage_window_focus_out
 654                                 (inc_dialog->dialog->window,
 655                                  NULL, NULL);
 656
 657                 qlist = next;
 658         }
 659
 660 #define SET_PIXMAP_AND_TEXT(pix, str)                                      \
 661 {                                                                          \
 662         progress_dialog_list_set(inc_dialog->dialog,                       \
 663                                  inc_dialog->cur_row,                      \
 664                                  pix,                                      \
 665                                  NULL,                                     \
 666                                  str);                                     \
 667 }
 668
 669         for (; inc_dialog->queue_list != NULL && !cancelled; inc_dialog->cur_row++) {
 670                 session = inc_dialog->queue_list->data;
 671                 pop3_session = POP3_SESSION(session->session);
 672                 GSList *filtered, *unfiltered;
 673
 674                 if (pop3_session->pass == NULL) {
 675                         SET_PIXMAP_AND_TEXT(okpix, _("Cancelled"));
 676                         inc_session_destroy(session);
 677                         inc_dialog->queue_list =
 678                                 g_list_remove(inc_dialog->queue_list, session);
 679                         continue;
 680                 }
 681
 682                 inc_progress_dialog_clear(inc_dialog);
 683                 progress_dialog_scroll_to_row(inc_dialog->dialog,
 684                                               inc_dialog->cur_row);
 685
 686                 SET_PIXMAP_AND_TEXT(currentpix, _("Retrieving"));
 687
 688                 /* begin POP3 session */
 689                 inc_state = inc_pop3_session_do(session);
 690
 691                 switch (inc_state) {
 692                 case INC_SUCCESS:
 693                         if (pop3_session->cur_total_num > 0)
 694                                 msg = g_strdup_printf(
 695                                         ngettext("Done (%d message (%s) received)",
 696                                                  "Done (%d messages (%s) received)",
 697                                          pop3_session->cur_total_num),
 698                                          pop3_session->cur_total_num,
 699                                          to_human_readable((goffset)pop3_session->cur_total_recv_bytes));
 700                         else
 701                                 msg = g_strdup_printf(_("Done (no new messages)"));
 702                         SET_PIXMAP_AND_TEXT(okpix, msg);
 703                         g_free(msg);
 704                         break;
 705                 case INC_CONNECT_ERROR:
 706                         SET_PIXMAP_AND_TEXT(errorpix, _("Connection failed"));
 707                         break;
 708                 case INC_AUTH_FAILED:
 709                         SET_PIXMAP_AND_TEXT(errorpix, _("Auth failed"));
 710                         if (pop3_session->ac_prefs->session_passwd) {
 711                                 g_free(pop3_session->ac_prefs->session_passwd);
 712                                 pop3_session->ac_prefs->session_passwd = NULL;
 713                         }
 714                         break;
 715                 case INC_LOCKED:
 716                         SET_PIXMAP_AND_TEXT(errorpix, _("Locked"));
 717                         break;
 718                 case INC_ERROR:
 719                 case INC_NO_SPACE:
 720                 case INC_IO_ERROR:
 721                 case INC_SOCKET_ERROR:
 722                 case INC_EOF:
 723                         SET_PIXMAP_AND_TEXT(errorpix, _("Error"));
 724                         break;
 725                 case INC_TIMEOUT:
 726                         SET_PIXMAP_AND_TEXT(errorpix, _("Timeout"));
 727                         break;
 728                 case INC_CANCEL:
 729                         SET_PIXMAP_AND_TEXT(okpix, _("Cancelled"));
 730                         if (!inc_dialog->show_dialog)
 731                                 cancelled = TRUE;
 732                         break;
 733                 default:
 734                         break;
 735                 }
 736
 737                 if (pop3_session->error_val == PS_AUTHFAIL) {
 738                         if(!prefs_common.no_recv_err_panel) {
 739                                 if((prefs_common.recv_dialog_mode == RECV_DIALOG_ALWAYS) ||
 740                                     ((prefs_common.recv_dialog_mode == RECV_DIALOG_MANUAL) && focus_window))
 741                                         manage_window_focus_in(inc_dialog->dialog->window, NULL, NULL);
 742                         }
 743                 }
 744
 745                 /* CLAWS: perform filtering actions on dropped message */
 746                 /* CLAWS: get default inbox (perhaps per account) */
 747                 if (pop3_session->ac_prefs->inbox) {
 748                         /* CLAWS: get destination folder / mailbox */
 749                         inbox = folder_find_item_from_identifier(pop3_session->ac_prefs->inbox);
 750                         if (!inbox)
 751                                 inbox = folder_get_default_inbox();
 752                 } else
 753                         inbox = folder_get_default_inbox();
 754
 755                 /* get list of messages in processing */
 756                 processing = folder_get_default_processing(pop3_session->ac_prefs->account_id);
 757                 folder_item_scan(processing);
 758                 msglist = folder_item_get_msg_list(processing);
 759
 760                 /* process messages */
 761                 folder_item_update_freeze();
 762
 763                 procmsg_msglist_filter(msglist, pop3_session->ac_prefs,
 764                                 &filtered, &unfiltered,
 765                                 pop3_session->ac_prefs->filter_on_recv);
 766
 767                 filtering_move_and_copy_msgs(msglist);
 768                 if (unfiltered != NULL)
 769                         folder_item_move_msgs(inbox, unfiltered);
 770
 771                 for(msglist_element = msglist; msglist_element != NULL;
 772                     msglist_element = msglist_element->next) {
 773                         procmsg_msginfo_free((MsgInfo**)&(msglist_element->data));
 774                 }
 775                 folder_item_update_thaw();
 776
 777                 g_slist_free(msglist);
 778                 g_slist_free(filtered);
 779                 g_slist_free(unfiltered);
 780
 781                 statusbar_pop_all();
 782
 783                 new_msgs += pop3_session->cur_total_num;
 784
 785                 pop3_write_uidl_list(pop3_session);
 786
 787                 if (inc_state != INC_SUCCESS && inc_state != INC_CANCEL) {
 788                         error_num++;
 789                         if (inc_dialog->show_dialog)
 790                                 manage_window_focus_in
 791                                         (inc_dialog->dialog->window,
 792                                          NULL, NULL);
 793                         inc_put_error(inc_state, pop3_session);
 794                         if (inc_dialog->show_dialog)
 795                                 manage_window_focus_out
 796                                         (inc_dialog->dialog->window,
 797                                          NULL, NULL);
 798                         if (inc_state == INC_NO_SPACE ||
 799                             inc_state == INC_IO_ERROR)
 800                                 break;
 801                 }
 802                 folder_item_free_cache(processing, TRUE);
 803
 804                 inc_session_destroy(session);
 805                 inc_dialog->queue_list =
 806                         g_list_remove(inc_dialog->queue_list, session);
 807         }
 808
 809 #undef SET_PIXMAP_AND_TEXT
 810
 811         if (new_msgs > 0)
 812                 fin_msg = g_strdup_printf(ngettext("Finished (%d new message)",
 813                                                    "Finished (%d new messages)",
 814                                                    new_msgs), new_msgs);
 815         else
 816                 fin_msg = g_strdup_printf(_("Finished (no new messages)"));
 817
 818         progress_dialog_set_label(inc_dialog->dialog, fin_msg);
 819
 820         while (inc_dialog->queue_list != NULL) {
 821                 session = inc_dialog->queue_list->data;
 822                 inc_session_destroy(session);
 823                 inc_dialog->queue_list =
 824                         g_list_remove(inc_dialog->queue_list, session);
 825         }
 826
 827         if (prefs_common.close_recv_dialog || !inc_dialog->show_dialog)
 828                 inc_progress_dialog_destroy(inc_dialog);
 829         else {
 830                 gtk_window_set_title(GTK_WINDOW(inc_dialog->dialog->window),
 831                                      fin_msg);
 832                 gtk_button_set_label(GTK_BUTTON(inc_dialog->dialog->cancel_btn),
 833                                      GTK_STOCK_CLOSE);
 834         }
 835
 836         g_free(fin_msg);
 837
 838         return new_msgs;
 839 }
 840
 841 static IncState inc_pop3_session_do(IncSession *session)
 842 {
 843         Pop3Session *pop3_session = POP3_SESSION(session->session);
 844         IncProgressDialog *inc_dialog = (IncProgressDialog *)session->data;
 845         PrefsAccount *ac = pop3_session->ac_prefs;
 846         gchar *server;
 847         gchar *account_name;
 848         gushort port;
 849         gchar *buf;
 850         ProxyInfo *proxy_info = NULL;
 851
 852         debug_print("getting new messages of account %s...\n",
 853                     ac->account_name);
 854
 855         ac->last_pop_login_time = time(NULL);
 856
 857         buf = g_strdup_printf(_("%s: Retrieving new messages"),
 858                               ac->recv_server);
 859         gtk_window_set_title(GTK_WINDOW(inc_dialog->dialog->window), buf);
 860         g_free(buf);
 861
 862         server = ac->recv_server;
 863         account_name = ac->account_name;
 864         port = pop3_get_port(pop3_session);
 865
 866 #ifdef USE_GNUTLS
 867         SESSION(pop3_session)->ssl_type = ac->ssl_pop;
 868         if (ac->ssl_pop != SSL_NONE)
 869                 SESSION(pop3_session)->nonblocking =
 870                         ac->use_nonblocking_ssl;
 871 #else
 872         if (ac->ssl_pop != SSL_NONE) {
 873                 if (alertpanel_full(_("Insecure connection"),
 874                         _("This connection is configured to be secured "
 875                           "using SSL/TLS, but SSL/TLS is not available "
 876                           "in this build of Claws Mail. \n\n"
 877                           "Do you want to continue connecting to this "
 878                           "server? The communication would not be "
 879                           "secure."),
 880                           GTK_STOCK_CANCEL, _("Con_tinue connecting"),
 881                           NULL, FALSE, NULL, ALERT_WARNING,
 882                           G_ALERTDEFAULT) != G_ALERTALTERNATE)
 883                         return INC_CANCEL;
 884         }
 885 #endif
 886
 887         buf = g_strdup_printf(_("Account '%s': Connecting to POP3 server: %s:%d..."),
 888                                 account_name, server, port);
 889         statusbar_print_all("%s", buf);
 890         log_message(LOG_PROTOCOL, "%s\n", buf);
 891
 892         progress_dialog_set_label(inc_dialog->dialog, buf);
 893
 894         if (ac->use_proxy) {
 895                 if (ac->use_default_proxy) {
 896                         proxy_info = (ProxyInfo *)&(prefs_common.proxy_info);
 897                         if (proxy_info->use_proxy_auth)
 898                                 proxy_info->proxy_pass = passwd_store_get(PWS_CORE, PWS_CORE_PROXY,
 899                                         PWS_CORE_PROXY_PASS);
 900                 } else {
 901                         proxy_info = (ProxyInfo *)&(ac->proxy_info);
 902                         if (proxy_info->use_proxy_auth)
 903                                 proxy_info->proxy_pass = passwd_store_get_account(ac->account_id,
 904                                         PWS_ACCOUNT_PROXY_PASS);
 905                 }
 906         }
 907         SESSION(pop3_session)->proxy_info = proxy_info;
 908
 909         GTK_EVENTS_FLUSH();
 910         g_free(buf);
 911
 912         session_set_timeout(SESSION(pop3_session),
 913                             prefs_common.io_timeout_secs * 1000);
 914
 915         if (session_connect(SESSION(pop3_session), server, port) < 0) {
 916                 if(!prefs_common.no_recv_err_panel) {
 917                         if((prefs_common.recv_dialog_mode == RECV_DIALOG_ALWAYS) ||
 918                             ((prefs_common.recv_dialog_mode == RECV_DIALOG_MANUAL) && focus_window)) {
 919                                 manage_window_focus_in(inc_dialog->dialog->window, NULL, NULL);
 920                         }
 921                         alertpanel_error(_("Can't connect to POP3 server: %s:%d"),
 922                                          server, port);
 923                         manage_window_focus_out(inc_dialog->dialog->window, NULL, NULL);
 924                 } else {
 925                         log_error(LOG_PROTOCOL, _("Can't connect to POP3 server: %s:%d\n"),
 926                             server, port);
 927                 }
 928                 session->inc_state = INC_CONNECT_ERROR;
 929                 statusbar_pop_all();
 930                 return INC_CONNECT_ERROR;
 931         }
 932
 933         while (session_is_running(SESSION(pop3_session)) &&
 934                session->inc_state != INC_CANCEL)
 935                 gtk_main_iteration();
 936
 937         if (session->inc_state == INC_SUCCESS) {
 938                 switch (pop3_session->error_val) {
 939                 case PS_SUCCESS:
 940                         switch (SESSION(pop3_session)->state) {
 941                         case SESSION_ERROR:
 942                                 if (pop3_session->state == POP3_READY)
 943                                         session->inc_state = INC_CONNECT_ERROR;
 944                                 else
 945                                         session->inc_state = INC_ERROR;
 946                                 break;
 947                         case SESSION_EOF:
 948                                 session->inc_state = INC_EOF;
 949                                 break;
 950                         case SESSION_TIMEOUT:
 951                                 session->inc_state = INC_TIMEOUT;
 952                                 break;
 953                         default:
 954                                 session->inc_state = INC_SUCCESS;
 955                                 break;
 956                         }
 957                         break;
 958                 case PS_AUTHFAIL:
 959                         session->inc_state = INC_AUTH_FAILED;
 960                         break;
 961                 case PS_IOERR:
 962                         session->inc_state = INC_IO_ERROR;
 963                         break;
 964                 case PS_SOCKET:
 965                         session->inc_state = INC_SOCKET_ERROR;
 966                         break;
 967                 case PS_LOCKBUSY:
 968                         session->inc_state = INC_LOCKED;
 969                         break;
 970                 default:
 971                         session->inc_state = INC_ERROR;
 972                         break;
 973                 }
 974         }
 975
 976         session_disconnect(SESSION(pop3_session));
 977         statusbar_pop_all();
 978
 979         return session->inc_state;
 980 }
 981
 982 static void inc_progress_dialog_update(IncProgressDialog *inc_dialog,
 983                                        IncSession *inc_session)
 984 {
 985         inc_progress_dialog_set_label(inc_dialog, inc_session);
 986         inc_progress_dialog_set_progress(inc_dialog, inc_session);
 987 }
 988
 989 static void inc_progress_dialog_set_label(IncProgressDialog *inc_dialog,
 990                                           IncSession *inc_session)
 991 {
 992         ProgressDialog *dialog = inc_dialog->dialog;
 993         Pop3Session *session;
 994
 995         cm_return_if_fail(inc_session != NULL);
 996
 997         session = POP3_SESSION(inc_session->session);
 998
 999         switch (session->state) {
1000         case POP3_GREETING:
1001                 break;
1002         case POP3_GETAUTH_USER:
1003         case POP3_GETAUTH_PASS:
1004         case POP3_GETAUTH_APOP:
1005                 progress_dialog_set_label(dialog, _("Authenticating..."));
1006                 statusbar_pop_all();
1007                 statusbar_print_all(_("Retrieving messages from %s (%s)..."),
1008                                     SESSION(session)->server,
1009                                     session->ac_prefs->account_name);
1010                 break;
1011         case POP3_GETRANGE_STAT:
1012                 progress_dialog_set_label
1013                         (dialog, _("Getting the number of new messages (STAT)..."));
1014                 break;
1015         case POP3_GETRANGE_LAST:
1016                 progress_dialog_set_label
1017                         (dialog, _("Getting the number of new messages (LAST)..."));
1018                 break;
1019         case POP3_GETRANGE_UIDL:
1020                 progress_dialog_set_label
1021                         (dialog, _("Getting the number of new messages (UIDL)..."));
1022                 break;
1023         case POP3_GETSIZE_LIST:
1024                 progress_dialog_set_label
1025                         (dialog, _("Getting the size of messages (LIST)..."));
1026                 break;
1027         case POP3_RETR:
1028         case POP3_RETR_RECV:
1029         case POP3_DELETE:
1030                 break;
1031         case POP3_LOGOUT:
1032                 progress_dialog_set_label(dialog, _("Quitting"));
1033                 break;
1034         default:
1035                 break;
1036         }
1037 }
1038
1039 static void inc_progress_dialog_set_progress(IncProgressDialog *inc_dialog,
1040                                              IncSession *inc_session)
1041 {
1042         gchar buf[MESSAGEBUFSIZE];
1043         Pop3Session *pop3_session = POP3_SESSION(inc_session->session);
1044         gchar *total_size_str;
1045         gint cur_total;
1046         gint total;
1047
1048         if (!pop3_session->new_msg_exist) return;
1049
1050         cur_total = inc_session->cur_total_bytes;
1051         total = pop3_session->total_bytes;
1052         if (pop3_session->state == POP3_RETR ||
1053             pop3_session->state == POP3_RETR_RECV ||
1054             pop3_session->state == POP3_DELETE) {
1055                 Xstrdup_a(total_size_str, to_human_readable((goffset)total), return);
1056                 g_snprintf(buf, sizeof(buf),
1057                            _("Retrieving message (%d / %d) (%s / %s)"),
1058                            pop3_session->cur_msg, pop3_session->count,
1059                            to_human_readable((goffset)cur_total), total_size_str);
1060                 progress_dialog_set_label(inc_dialog->dialog, buf);
1061         }
1062
1063         progress_dialog_set_fraction
1064                 (inc_dialog->dialog, (total == 0) ? 0: (gfloat)cur_total / (gfloat)total);
1065
1066         statusbar_progress_all(pop3_session->cur_msg, pop3_session->count, 1);
1067
1068         if (pop3_session->cur_total_num > 0) {
1069                 g_snprintf(buf, sizeof(buf),
1070                            ngettext("Retrieving (%d message (%s) received)",
1071                                     "Retrieving (%d messages (%s) received)",
1072                                     pop3_session->cur_total_num),
1073                            pop3_session->cur_total_num,
1074                            to_human_readable
1075                            ((goffset)pop3_session->cur_total_recv_bytes));
1076                 progress_dialog_list_set_status(inc_dialog->dialog,
1077                                                 inc_dialog->cur_row,
1078                                                 buf);
1079         }
1080 }
1081
1082 static void inc_progress_dialog_update_periodic(IncProgressDialog *inc_dialog,
1083                                                 IncSession *inc_session)
1084 {
1085         GTimeVal tv_cur;
1086         GTimeVal tv_result;
1087         gint msec;
1088
1089         g_get_current_time(&tv_cur);
1090
1091         tv_result.tv_sec = tv_cur.tv_sec - inc_dialog->progress_tv.tv_sec;
1092         tv_result.tv_usec = tv_cur.tv_usec - inc_dialog->progress_tv.tv_usec;
1093         if (tv_result.tv_usec < 0) {
1094                 tv_result.tv_sec--;
1095                 tv_result.tv_usec += G_USEC_PER_SEC;
1096         }
1097
1098         msec = tv_result.tv_sec * 1000 + tv_result.tv_usec / 1000;
1099         if (msec > PROGRESS_UPDATE_INTERVAL) {
1100                 inc_progress_dialog_update(inc_dialog, inc_session);
1101                 inc_dialog->progress_tv.tv_sec = tv_cur.tv_sec;
1102                 inc_dialog->progress_tv.tv_usec = tv_cur.tv_usec;
1103         }
1104 }
1105
1106 static gint inc_recv_data_progressive(Session *session, guint cur_len,
1107                                       guint total_len, gpointer data)
1108 {
1109         IncSession *inc_session = (IncSession *)data;
1110         Pop3Session *pop3_session = POP3_SESSION(session);
1111         IncProgressDialog *inc_dialog;
1112         gint cur_total;
1113
1114         cm_return_val_if_fail(inc_session != NULL, -1);
1115
1116         if (pop3_session->state != POP3_RETR &&
1117             pop3_session->state != POP3_RETR_RECV &&
1118             pop3_session->state != POP3_DELETE &&
1119             pop3_session->state != POP3_LOGOUT) return 0;
1120
1121         if (!pop3_session->new_msg_exist) return 0;
1122
1123         cur_total = pop3_session->cur_total_bytes + cur_len;
1124         if (cur_total > pop3_session->total_bytes)
1125                 cur_total = pop3_session->total_bytes;
1126         inc_session->cur_total_bytes = cur_total;
1127
1128         inc_dialog = (IncProgressDialog *)inc_session->data;
1129         inc_progress_dialog_update_periodic(inc_dialog, inc_session);
1130
1131         return 0;
1132 }
1133
1134 static gint inc_recv_data_finished(Session *session, guint len, gpointer data)
1135 {
1136         IncSession *inc_session = (IncSession *)data;
1137         IncProgressDialog *inc_dialog;
1138
1139         cm_return_val_if_fail(inc_session != NULL, -1);
1140
1141         inc_dialog = (IncProgressDialog *)inc_session->data;
1142
1143         inc_recv_data_progressive(session, 0, 0, inc_session);
1144
1145         if (POP3_SESSION(session)->state == POP3_LOGOUT) {
1146                 inc_progress_dialog_update(inc_dialog, inc_session);
1147         }
1148
1149         return 0;
1150 }
1151
1152 static gint inc_recv_message(Session *session, const gchar *msg, gpointer data)
1153 {
1154         IncSession *inc_session = (IncSession *)data;
1155         IncProgressDialog *inc_dialog;
1156
1157         cm_return_val_if_fail(inc_session != NULL, -1);
1158
1159         inc_dialog = (IncProgressDialog *)inc_session->data;
1160
1161         switch (POP3_SESSION(session)->state) {
1162         case POP3_GETAUTH_USER:
1163         case POP3_GETAUTH_PASS:
1164         case POP3_GETAUTH_APOP:
1165         case POP3_GETRANGE_STAT:
1166         case POP3_GETRANGE_LAST:
1167         case POP3_GETRANGE_UIDL:
1168         case POP3_GETSIZE_LIST:
1169                 inc_progress_dialog_update(inc_dialog, inc_session);
1170                 break;
1171         case POP3_RETR:
1172                 inc_recv_data_progressive(session, 0, 0, inc_session);
1173                 break;
1174         case POP3_LOGOUT:
1175                 inc_progress_dialog_update(inc_dialog, inc_session);
1176                 break;
1177         default:
1178                 break;
1179         }
1180
1181         return 0;
1182 }
1183
1184 static gint inc_drop_message(Pop3Session *session, const gchar *file)
1185 {
1186         FolderItem *inbox;
1187         FolderItem *dropfolder;
1188         IncSession *inc_session = (IncSession *)(SESSION(session)->data);
1189         gint msgnum;
1190
1191         cm_return_val_if_fail(inc_session != NULL, -1);
1192
1193         if (session->ac_prefs->inbox) {
1194                 inbox = folder_find_item_from_identifier
1195                         (session->ac_prefs->inbox);
1196                 if (!inbox)
1197                         inbox = folder_get_default_inbox();
1198         } else
1199                 inbox = folder_get_default_inbox();
1200         if (!inbox) {
1201                 claws_unlink(file);
1202                 return -1;
1203         }
1204
1205         /* CLAWS: claws uses a global .processing folder for the filtering. */
1206         dropfolder = folder_get_default_processing(session->ac_prefs->account_id);
1207
1208         /* add msg file to drop folder */
1209         if ((msgnum = folder_item_add_msg(
1210                         dropfolder, file, NULL, TRUE)) < 0) {
1211                 claws_unlink(file);
1212                 return -1;
1213         }
1214
1215         return 0;
1216 }
1217
1218 static void inc_put_error(IncState istate, Pop3Session *session)
1219 {
1220         gchar *log_msg = NULL;
1221         gchar *err_msg = NULL;
1222         gboolean fatal_error = FALSE;
1223
1224         switch (istate) {
1225         case INC_CONNECT_ERROR:
1226                 fatal_error = TRUE;
1227                 if (prefs_common.no_recv_err_panel)
1228                         break;
1229                 err_msg = g_strdup_printf(_("Connection to %s:%d failed."),
1230                                           SESSION(session)->server,
1231                                           SESSION(session)->port);
1232                 break;
1233         case INC_ERROR:
1234                 log_msg = _("Error occurred while processing mail.");
1235                 fatal_error = TRUE;
1236                 if (prefs_common.no_recv_err_panel)
1237                         break;
1238                 if (session->error_msg)
1239                         err_msg = g_strdup_printf
1240                                 (_("Error occurred while processing mail:\n%s"),
1241                                  session->error_msg);
1242                 else
1243                         err_msg = g_strdup(log_msg);
1244                 break;
1245         case INC_NO_SPACE:
1246                 log_msg = _("No disk space left.");
1247                 err_msg = g_strdup(log_msg);
1248                 fatal_error = TRUE;
1249                 break;
1250         case INC_IO_ERROR:
1251                 log_msg = _("Can't write file.");
1252                 err_msg = g_strdup(log_msg);
1253                 fatal_error = TRUE;
1254                 break;
1255         case INC_SOCKET_ERROR:
1256                 log_msg = _("Socket error.");
1257                 if (prefs_common.no_recv_err_panel)
1258                         break;
1259                 err_msg = g_strdup_printf(_("Socket error on connection to %s:%d."),
1260                                           SESSION(session)->server,
1261                                           SESSION(session)->port);
1262                 break;
1263         case INC_EOF:
1264                 log_msg = _("Connection closed by the remote host.");
1265                 if (prefs_common.no_recv_err_panel)
1266                         break;
1267                 err_msg = g_strdup_printf(_("Connection to %s:%d closed by the remote host."),
1268                                           SESSION(session)->server,
1269                                           SESSION(session)->port);
1270                 break;
1271         case INC_LOCKED:
1272                 log_msg = _("Mailbox is locked.");
1273                 if (prefs_common.no_recv_err_panel)
1274                         break;
1275                 if (session->error_msg)
1276                         err_msg = g_strdup_printf(_("Mailbox is locked:\n%s"),
1277                                                   session->error_msg);
1278                 else
1279                         err_msg = g_strdup(log_msg);
1280                 break;
1281         case INC_AUTH_FAILED:
1282                 log_msg = _("Authentication failed.");
1283                 fatal_error = TRUE;
1284                 if (prefs_common.no_recv_err_panel)
1285                         break;
1286                 if (session->error_msg)
1287                         err_msg = g_strdup_printf
1288                                 (_("Authentication failed:\n%s"), session->error_msg);
1289                 else
1290                         err_msg = g_strdup(log_msg);
1291                 break;
1292         case INC_TIMEOUT:
1293                 log_msg = _("Session timed out. You may be able to "
1294                             "recover by increasing the timeout value in "
1295                             "Preferences/Other/Miscellaneous.");
1296                 if (prefs_common.no_recv_err_panel)
1297                         break;
1298                 err_msg = g_strdup_printf(_("Connection to %s:%d timed out."),
1299                                           SESSION(session)->server,
1300                                           SESSION(session)->port);
1301                 break;
1302         default:
1303                 break;
1304         }
1305
1306         if (log_msg) {
1307                 if (fatal_error)
1308                         log_error(LOG_PROTOCOL, "%s\n", log_msg);
1309                 else
1310                         log_warning(LOG_PROTOCOL, "%s\n", log_msg);
1311         }
1312         if (prefs_common.no_recv_err_panel && fatal_error)
1313                 mainwindow_show_error();
1314
1315         if (err_msg) {
1316                 alertpanel_error_log("%s", err_msg);
1317                 g_free(err_msg);
1318         }
1319 }
1320
1321 static void inc_cancel(IncProgressDialog *dialog)
1322 {
1323         IncSession *session;
1324
1325         cm_return_if_fail(dialog != NULL);
1326
1327         if (dialog->queue_list == NULL) {
1328                 inc_progress_dialog_destroy(dialog);
1329                 return;
1330         }
1331
1332         session = dialog->queue_list->data;
1333
1334         session->inc_state = INC_CANCEL;
1335
1336         log_message(LOG_PROTOCOL, _("Incorporation cancelled\n"));
1337 }
1338
1339 gboolean inc_is_active(void)
1340 {
1341         return (inc_dialog_list != NULL);
1342 }
1343
1344 void inc_cancel_all(void)
1345 {
1346         GList *cur;
1347
1348         for (cur = inc_dialog_list; cur != NULL; cur = cur->next)
1349                 inc_cancel((IncProgressDialog *)cur->data);
1350 }
1351
1352 static void inc_showlog_cb(GtkWidget *widget, gpointer data)
1353 {
1354         MainWindow *mainwin = mainwindow_get_mainwindow();
1355
1356         log_window_show(mainwin->logwin);
1357 }
1358
1359 static void inc_cancel_cb(GtkWidget *widget, gpointer data)
1360 {
1361         inc_cancel((IncProgressDialog *)data);
1362 }
1363
1364 static gint inc_dialog_delete_cb(GtkWidget *widget, GdkEventAny *event,
1365                                  gpointer data)
1366 {
1367         IncProgressDialog *dialog = (IncProgressDialog *)data;
1368
1369         if (dialog->queue_list == NULL)
1370                 inc_progress_dialog_destroy(dialog);
1371
1372         return TRUE;
1373 }
1374
1375 static gint inc_spool_account(PrefsAccount *account)
1376 {
1377         FolderItem *inbox;
1378         gchar *mbox;
1379         gint result;
1380
1381         if (account->local_inbox) {
1382                 inbox = folder_find_item_from_identifier(account->local_inbox);
1383                 if (!inbox)
1384                         inbox = folder_get_default_inbox();
1385         } else
1386                 inbox = folder_get_default_inbox();
1387
1388         if (account->local_mbox) {
1389                 if (is_file_exist(account->local_mbox))
1390                         mbox = g_strdup(account->local_mbox);
1391                 else if (is_dir_exist(account->local_mbox))
1392                         mbox = g_strconcat(account->local_mbox, G_DIR_SEPARATOR_S,
1393                                            g_get_user_name(), NULL);
1394                 else {
1395                         debug_print("%s: local mailbox not found.\n",
1396                                     account->local_mbox);
1397                         return -1;
1398                 }
1399         } else {
1400                 debug_print("local mailbox not set in account info.\n");
1401                 return -1;
1402         }
1403
1404         result = get_spool(inbox, mbox, account);
1405         g_free(mbox);
1406
1407         statusbar_pop_all();
1408
1409         return result;
1410 }
1411
1412 static gint get_spool(FolderItem *dest, const gchar *mbox, PrefsAccount *account)
1413 {
1414         gint msgs, size;
1415         gint lockfd;
1416         gchar tmp_mbox[MAXPATHLEN + 1];
1417
1418         cm_return_val_if_fail(dest != NULL, -1);
1419         cm_return_val_if_fail(mbox != NULL, -1);
1420         cm_return_val_if_fail(account != NULL, -1);
1421
1422         if (!is_file_exist(mbox) || (size = get_file_size(mbox)) == 0) {
1423                 debug_print("%s: no messages in local mailbox.\n", mbox);
1424                 return 0;
1425         } else if (size < 0)
1426                 return -1;
1427
1428         if ((lockfd = lock_mbox(mbox, LOCK_FLOCK)) < 0)
1429                 return -1;
1430
1431         g_snprintf(tmp_mbox, sizeof(tmp_mbox), "%s%ctmpmbox.%p",
1432                    get_tmp_dir(), G_DIR_SEPARATOR, mbox);
1433
1434         if (copy_mbox(lockfd, tmp_mbox) < 0) {
1435                 unlock_mbox(mbox, lockfd, LOCK_FLOCK);
1436                 return -1;
1437         }
1438
1439         debug_print("Getting new messages from %s into %s...\n",
1440                     mbox, dest->path);
1441
1442         msgs = proc_mbox(dest, tmp_mbox, account->filter_on_recv, account);
1443
1444         claws_unlink(tmp_mbox);
1445         if (msgs >= 0) empty_mbox(mbox);
1446         unlock_mbox(mbox, lockfd, LOCK_FLOCK);
1447
1448         return msgs;
1449 }
1450
1451 void inc_lock_real(void)
1452 {
1453         inc_lock_count++;
1454 }
1455
1456 void inc_unlock_real(void)
1457 {
1458         if (inc_lock_count > 0)
1459                 inc_lock_count--;
1460 }
1461
1462 static guint autocheck_timer = 0;
1463 static gpointer autocheck_data = NULL;
1464
1465 static void inc_notify_cmd(gint new_msgs, gboolean notify)
1466 {
1467         gchar *buf, *numpos, *ret_str;
1468         gssize by_read = 0, by_written = 0;
1469
1470         if (!(new_msgs && notify && prefs_common.newmail_notify_cmd &&
1471             *prefs_common.newmail_notify_cmd))
1472                      return;
1473
1474         buf = g_strdup(prefs_common.newmail_notify_cmd);
1475         if ((numpos = strstr(buf, "%d")) != NULL) {
1476                 gchar *buf2;
1477
1478                 *numpos = '\0';
1479                 buf2 = g_strdup_printf("%s%d%s", buf, new_msgs, numpos + 2);
1480                 g_free(buf);
1481                 buf = buf2;
1482         }
1483
1484         ret_str = g_locale_from_utf8(buf, strlen(buf), &by_read, &by_written,
1485                                      NULL);
1486         if (ret_str && by_written) {
1487                 g_free(buf);
1488                 buf = ret_str;
1489         }
1490         debug_print("executing new mail notification command: %s\n", buf);
1491         execute_command_line(buf, TRUE, NULL);
1492
1493         g_free(buf);
1494 }
1495
1496 void inc_autocheck_timer_init(MainWindow *mainwin)
1497 {
1498         autocheck_data = mainwin;
1499         inc_autocheck_timer_set();
1500 }
1501
1502 static void inc_autocheck_timer_set_interval(guint _interval)
1503 {
1504         guint interval = _interval;
1505
1506         /* Convert the interval to seconds if needed. */
1507         if (_interval % 1000 == 0)
1508                 interval /= 1000;
1509
1510         inc_autocheck_timer_remove();
1511         /* last test is to avoid re-enabling auto_check after modifying
1512            the common preferences */
1513         if (prefs_common.autochk_newmail && autocheck_data
1514             && prefs_common.work_offline == FALSE) {
1515                         autocheck_timer =
1516                                 g_timeout_add_seconds(interval, inc_autocheck_func, autocheck_data);
1517                 debug_print("added global inc timer %d at %u seconds\n",
1518                                 autocheck_timer, interval);
1519         }
1520 }
1521
1522 void inc_autocheck_timer_set(void)
1523 {
1524         inc_autocheck_timer_set_interval(prefs_common.autochk_itv * 1000);
1525 }
1526
1527 void inc_autocheck_timer_remove(void)
1528 {
1529         if (autocheck_timer) {
1530                 debug_print("removed global inc timer %d\n", autocheck_timer);
1531                 g_source_remove(autocheck_timer);
1532                 autocheck_timer = 0;
1533         }
1534 }
1535
1536 static gint inc_autocheck_func(gpointer data)
1537 {
1538         MainWindow *mainwin = (MainWindow *)data;
1539
1540         if (inc_lock_count) {
1541                 debug_print("global inc: autocheck is locked.\n");
1542                 inc_autocheck_timer_set_interval(1000);
1543                 return FALSE;
1544         }
1545
1546         inc_all_account_mail(mainwin, TRUE, FALSE, prefs_common.newmail_notify_auto);
1547         inc_autocheck_timer_set();
1548
1549         return FALSE;
1550 }
1551
1552 static gboolean inc_account_autocheck_func(gpointer data)
1553 {
1554         PrefsAccount *account = (PrefsAccount *)data;
1555         GList *list = NULL;
1556
1557         cm_return_val_if_fail(account != NULL, FALSE);
1558
1559         debug_print("account %d: inc_account_autocheck_func\n",
1560                         account->account_id);
1561
1562         list = g_list_append(list, account);
1563         inc_account_list_mail(mainwindow_get_mainwindow(),
1564                         list, TRUE, prefs_common.newmail_notify_auto);
1565         g_list_free(list);
1566
1567         inc_account_autocheck_timer_set_interval(account);
1568
1569         return FALSE;
1570 }
1571
1572 void inc_account_autocheck_timer_remove(PrefsAccount *account)
1573 {
1574         cm_return_if_fail(account != NULL);
1575
1576         if (account->autocheck_timer != 0) {
1577                 g_source_remove(account->autocheck_timer);
1578                 debug_print("INC: account %d: removed inc timer %d\n", account->account_id,
1579                                 account->autocheck_timer);
1580                 account->autocheck_timer = 0;
1581         }
1582 }
1583
1584 void inc_account_autocheck_timer_set_interval(PrefsAccount *account)
1585 {
1586         cm_return_if_fail(account != NULL);
1587
1588         inc_account_autocheck_timer_remove(account);
1589
1590         if (account->autochk_use_default
1591                         || !account->autochk_use_custom
1592                         || account->autochk_itv == 0)
1593                 return;
1594
1595         account->autocheck_timer = g_timeout_add_seconds(
1596                         account->autochk_itv, inc_account_autocheck_func, account);
1597         debug_print("INC: account %d: added inc timer %d at %u seconds\n",
1598                         account->account_id, account->autocheck_timer, account->autochk_itv);
1599 }
1600
1601 gboolean inc_offline_should_override(gboolean force_ask, const gchar *msg)
1602 {
1603         gint length = 10; /* seconds */
1604         gint answer = G_ALERTDEFAULT;
1605
1606 #ifdef HAVE_NETWORKMANAGER_SUPPORT
1607         /* If no network connection is available, override is not possible */
1608         if(!networkmanager_is_online(NULL))
1609                 return FALSE;
1610 #endif
1611
1612         if (prefs_common.autochk_newmail)
1613                 length = prefs_common.autochk_itv; /* seconds */
1614
1615         if (force_ask) {
1616                 inc_offline_overridden_no = (time_t)0;
1617         }
1618
1619         if (prefs_common.work_offline) {
1620                 gchar *tmp = NULL;
1621
1622                 if (time(NULL) - inc_offline_overridden_yes < length * 60) /* seconds */
1623                          return TRUE;
1624                 else if (time(NULL) - inc_offline_overridden_no < length * 60) /* seconds */
1625                          return FALSE;
1626
1627                 if (!force_ask) {
1628                         gchar *unit = _("seconds");
1629
1630                         /* show the offline override time (length) using the must appropriate unit:
1631                            the biggest unit possible (hours, minutes, seconds), provided that there
1632                            is not inferior unit involved: 1 hour, 150 minutes, 25 minutes, 90 minutes,
1633                            30 seconds, 90 seconds. */
1634                         if ((length / 3600) > 0) { /* hours? */
1635                                 if (((length % 3600) % 60) == 0) { /* no seconds left? */
1636                                         if ((length % 3600) > 0) { /* minutes left? */
1637                                                 length = length / 60;
1638                                                 unit = ngettext("minute", "minutes", length);
1639                                         } else {
1640                                                 length = length / 3600;
1641                                                 unit = ngettext("hour", "hours", length);
1642                                         }
1643                                 } /* else: seconds */
1644                         } else {
1645                                 if ((length / 60) > 0) { /* minutes left? */
1646                                         if ((length % 60) == 0) {
1647                                                 length = length / 60;
1648                                                 unit = ngettext("minute", "minutes", length);
1649                                         }
1650                                 } /* else: seconds */
1651                         }
1652                         tmp = g_strdup_printf(
1653                                 _("%s%sYou're working offline. Override for %d %s?"),
1654                                 msg?msg:"",
1655                                 msg?"\n\n":"",
1656                                 length, unit);
1657                 } else
1658                         tmp = g_strdup_printf(
1659                                 _("%s%sYou're working offline. Override?"),
1660                                 msg?msg:"",
1661                                 msg?"\n\n":"");
1662
1663                 answer = alertpanel(_("Offline warning"),
1664                                tmp,
1665                                GTK_STOCK_NO, GTK_STOCK_YES,
1666                                 !force_ask? _("On_ly once"):NULL, ALERTFOCUS_SECOND);
1667                 g_free(tmp);
1668                 if (answer == G_ALERTALTERNATE) {
1669                         inc_offline_overridden_yes = time(NULL);
1670                         return TRUE;
1671                 } else if (answer == G_ALERTDEFAULT) {
1672                         if (!force_ask)
1673                                 inc_offline_overridden_no  = time(NULL);
1674                         return FALSE;
1675                 } else {
1676                         inc_reset_offline_override_timers();
1677                         return TRUE;
1678                 }
1679         }
1680         return TRUE;
1681 }
1682
1683 void inc_reset_offline_override_timers()
1684 {
1685         debug_print("resetting offline override timers\n");
1686         inc_offline_overridden_yes = (time_t)0;
1687         inc_offline_overridden_no  = (time_t)0;
1688 }