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
 421         debug_print("INC: inc_all_account_mail(), autocheck: %s\n",
 422                         autocheck ? "YES" : "NO");
 423
 424         /* Collect list of accounts which use the global autocheck interval. */
 425         for (list = account_get_list(); list != NULL; list = list->next) {
 426                 PrefsAccount *account = list->data;
 427
 428                 /* Nothing to do for SMTP-only accounts. */
 429                 if (account->protocol == A_NONE)
 430                         continue;
 431
 432                 /* Set up condition which decides whether or not to check
 433                  * this account, based on whether we're doing global autocheck
 434                  * or a check at startup or a manual 'Get all' check. */
 435                 if (autocheck)
 436                         condition = prefs_common_get_prefs()->autochk_newmail
 437                                 && account->autochk_use_default;
 438                 else if (check_at_startup || (!check_at_startup && !autocheck))
 439                         condition = account->recv_at_getall;
 440
 441                 if (condition) {
 442                         debug_print("INC: will check account %d\n", account->account_id);
 443                         list2 = g_list_append(list2, account);
 444                 }
 445         }
 446
 447         /* Do the check on the collected accounts. */
 448         if (list2 != NULL) {
 449                 inc_account_list_mail(mainwin, list2, autocheck, notify);
 450                 g_list_free(list2);
 451         }
 452 }
 453
 454 static void inc_progress_dialog_size_allocate_cb(GtkWidget *widget,
 455                                          GtkAllocation *allocation)
 456 {
 457         cm_return_if_fail(allocation != NULL);
 458
 459         prefs_common.receivewin_width = allocation->width;
 460         prefs_common.receivewin_height = allocation->height;
 461 }
 462
 463 static IncProgressDialog *inc_progress_dialog_create(gboolean autocheck)
 464 {
 465         IncProgressDialog *dialog;
 466         ProgressDialog *progress;
 467         static GdkGeometry geometry;
 468
 469         dialog = g_new0(IncProgressDialog, 1);
 470
 471         progress = progress_dialog_create();
 472         gtk_window_set_title(GTK_WINDOW(progress->window),
 473                              _("Retrieving new messages"));
 474         g_signal_connect(G_OBJECT(progress->showlog_btn), "clicked",
 475                          G_CALLBACK(inc_showlog_cb), dialog);
 476         g_signal_connect(G_OBJECT(progress->cancel_btn), "clicked",
 477                          G_CALLBACK(inc_cancel_cb), dialog);
 478         g_signal_connect(G_OBJECT(progress->window), "delete_event",
 479                          G_CALLBACK(inc_dialog_delete_cb), dialog);
 480         g_signal_connect(G_OBJECT(progress->window), "size_allocate",
 481                          G_CALLBACK(inc_progress_dialog_size_allocate_cb), NULL);
 482         /* manage_window_set_transient(GTK_WINDOW(progress->window)); */
 483
 484         progress_dialog_get_fraction(progress);
 485
 486         stock_pixbuf_gdk(STOCK_PIXMAP_COMPLETE, &okpix);
 487         stock_pixbuf_gdk(STOCK_PIXMAP_CONTINUE, &currentpix);
 488         stock_pixbuf_gdk(STOCK_PIXMAP_ERROR, &errorpix);
 489
 490         if (!geometry.min_height) {
 491                 geometry.min_width = 460;
 492                 geometry.min_height = 250;
 493         }
 494
 495         gtk_window_set_geometry_hints(GTK_WINDOW(progress->window), NULL, &geometry,
 496                                       GDK_HINT_MIN_SIZE);
 497         gtk_widget_set_size_request(progress->window, prefs_common.receivewin_width,
 498                                     prefs_common.receivewin_height);
 499
 500         if (prefs_common.recv_dialog_mode == RECV_DIALOG_ALWAYS ||
 501             (prefs_common.recv_dialog_mode == RECV_DIALOG_MANUAL &&
 502              !autocheck)) {
 503                 dialog->show_dialog = TRUE;
 504                 gtk_widget_show_now(progress->window);
 505         }
 506
 507         dialog->dialog = progress;
 508         g_get_current_time(&dialog->progress_tv);
 509         g_get_current_time(&dialog->folder_tv);
 510         dialog->queue_list = NULL;
 511         dialog->cur_row = 0;
 512
 513         inc_dialog_list = g_list_append(inc_dialog_list, dialog);
 514
 515         return dialog;
 516 }
 517
 518 static void inc_progress_dialog_set_list(IncProgressDialog *inc_dialog)
 519 {
 520         GList *list;
 521
 522         for (list = inc_dialog->queue_list; list != NULL; list = list->next) {
 523                 IncSession *session = list->data;
 524                 Pop3Session *pop3_session = POP3_SESSION(session->session);
 525
 526                 session->data = inc_dialog;
 527
 528                 progress_dialog_list_set(inc_dialog->dialog,
 529                                          -1, NULL,
 530                                          pop3_session->ac_prefs->account_name,
 531                                          _("Standby"));
 532         }
 533 }
 534
 535 static void inc_progress_dialog_clear(IncProgressDialog *inc_dialog)
 536 {
 537         progress_dialog_get_fraction(inc_dialog->dialog);
 538         progress_dialog_set_label(inc_dialog->dialog, "");
 539         if (inc_dialog->mainwin)
 540                 main_window_progress_off(inc_dialog->mainwin);
 541 }
 542
 543 static void inc_progress_dialog_destroy(IncProgressDialog *inc_dialog)
 544 {
 545         cm_return_if_fail(inc_dialog != NULL);
 546
 547         inc_dialog_list = g_list_remove(inc_dialog_list, inc_dialog);
 548
 549         if (inc_dialog->mainwin)
 550                 main_window_progress_off(inc_dialog->mainwin);
 551         progress_dialog_destroy(inc_dialog->dialog);
 552
 553         g_free(inc_dialog);
 554 }
 555
 556 static IncSession *inc_session_new(PrefsAccount *account)
 557 {
 558         IncSession *session;
 559
 560         cm_return_val_if_fail(account != NULL, NULL);
 561
 562         if (account->protocol != A_POP3)
 563                 return NULL;
 564         if (!account->recv_server || !account->userid)
 565                 return NULL;
 566
 567         session = g_new0(IncSession, 1);
 568
 569         session->session = pop3_session_new(account);
 570         session->session->data = session;
 571         POP3_SESSION(session->session)->drop_message = inc_drop_message;
 572         session_set_recv_message_notify(session->session,
 573                                         inc_recv_message, session);
 574         session_set_recv_data_progressive_notify(session->session,
 575                                                  inc_recv_data_progressive,
 576                                                  session);
 577         session_set_recv_data_notify(session->session,
 578                                      inc_recv_data_finished, session);
 579
 580         return session;
 581 }
 582
 583 static void inc_session_destroy(IncSession *session)
 584 {
 585         cm_return_if_fail(session != NULL);
 586
 587         session_destroy(session->session);
 588         g_free(session);
 589 }
 590
 591 static gint pop3_get_port(Pop3Session *pop3_session)
 592 {
 593 #ifdef USE_GNUTLS
 594         return pop3_session->ac_prefs->set_popport ?
 595                 pop3_session->ac_prefs->popport :
 596                 pop3_session->ac_prefs->ssl_pop == SSL_TUNNEL ? 995 : 110;
 597 #else
 598         return pop3_session->ac_prefs->set_popport ?
 599                 pop3_session->ac_prefs->popport : 110;
 600 #endif
 601 }
 602
 603 static gint inc_start(IncProgressDialog *inc_dialog)
 604 {
 605         IncSession *session;
 606         GList *qlist;
 607         Pop3Session *pop3_session;
 608         IncState inc_state;
 609         gint error_num = 0;
 610         gint new_msgs = 0;
 611         gchar *msg;
 612         gchar *fin_msg;
 613         FolderItem *processing, *inbox;
 614         GSList *msglist, *msglist_element;
 615         gboolean cancelled = FALSE;
 616
 617         qlist = inc_dialog->queue_list;
 618         while (qlist != NULL) {
 619                 GList *next = qlist->next;
 620
 621                 session = qlist->data;
 622                 pop3_session = POP3_SESSION(session->session);
 623                 pop3_session->user = g_strdup(pop3_session->ac_prefs->userid);
 624
 625                 if (inc_dialog->show_dialog)
 626                         manage_window_focus_in
 627                                 (inc_dialog->dialog->window,
 628                                  NULL, NULL);
 629
 630                 if (password_get(pop3_session->user,
 631                                         pop3_session->ac_prefs->recv_server,
 632                                         "pop3", pop3_get_port(pop3_session),
 633                                         &(pop3_session->pass))) {
 634                         /* NOP */;
 635                 } else if ((pop3_session->pass = passwd_store_get_account(
 636                                                 pop3_session->ac_prefs->account_id, PWS_ACCOUNT_RECV)) == NULL) {
 637                         gchar *pass;
 638
 639                         pass = input_dialog_query_password_keep
 640                                 (pop3_session->ac_prefs->recv_server,
 641                                  pop3_session->user,
 642                                  &(pop3_session->ac_prefs->session_passwd));
 643
 644                         if (pass) {
 645                                 pop3_session->pass = pass;
 646                         }
 647                 }
 648
 649                 if (inc_dialog->show_dialog)
 650                         manage_window_focus_out
 651                                 (inc_dialog->dialog->window,
 652                                  NULL, NULL);
 653
 654                 qlist = next;
 655         }
 656
 657 #define SET_PIXMAP_AND_TEXT(pix, str)                                      \
 658 {                                                                          \
 659         progress_dialog_list_set(inc_dialog->dialog,                       \
 660                                  inc_dialog->cur_row,                      \
 661                                  pix,                                      \
 662                                  NULL,                                     \
 663                                  str);                                     \
 664 }
 665
 666         for (; inc_dialog->queue_list != NULL && !cancelled; inc_dialog->cur_row++) {
 667                 session = inc_dialog->queue_list->data;
 668                 pop3_session = POP3_SESSION(session->session);
 669                 GSList *filtered, *unfiltered;
 670
 671                 if (pop3_session->pass == NULL) {
 672                         SET_PIXMAP_AND_TEXT(okpix, _("Cancelled"));
 673                         inc_session_destroy(session);
 674                         inc_dialog->queue_list =
 675                                 g_list_remove(inc_dialog->queue_list, session);
 676                         continue;
 677                 }
 678
 679                 inc_progress_dialog_clear(inc_dialog);
 680                 progress_dialog_scroll_to_row(inc_dialog->dialog,
 681                                               inc_dialog->cur_row);
 682
 683                 SET_PIXMAP_AND_TEXT(currentpix, _("Retrieving"));
 684
 685                 /* begin POP3 session */
 686                 inc_state = inc_pop3_session_do(session);
 687
 688                 switch (inc_state) {
 689                 case INC_SUCCESS:
 690                         if (pop3_session->cur_total_num > 0)
 691                                 msg = g_strdup_printf(
 692                                         ngettext("Done (%d message (%s) received)",
 693                                                  "Done (%d messages (%s) received)",
 694                                          pop3_session->cur_total_num),
 695                                          pop3_session->cur_total_num,
 696                                          to_human_readable((goffset)pop3_session->cur_total_recv_bytes));
 697                         else
 698                                 msg = g_strdup_printf(_("Done (no new messages)"));
 699                         SET_PIXMAP_AND_TEXT(okpix, msg);
 700                         g_free(msg);
 701                         break;
 702                 case INC_CONNECT_ERROR:
 703                         SET_PIXMAP_AND_TEXT(errorpix, _("Connection failed"));
 704                         break;
 705                 case INC_AUTH_FAILED:
 706                         SET_PIXMAP_AND_TEXT(errorpix, _("Auth failed"));
 707                         if (pop3_session->ac_prefs->session_passwd) {
 708                                 g_free(pop3_session->ac_prefs->session_passwd);
 709                                 pop3_session->ac_prefs->session_passwd = NULL;
 710                         }
 711                         break;
 712                 case INC_LOCKED:
 713                         SET_PIXMAP_AND_TEXT(errorpix, _("Locked"));
 714                         break;
 715                 case INC_ERROR:
 716                 case INC_NO_SPACE:
 717                 case INC_IO_ERROR:
 718                 case INC_SOCKET_ERROR:
 719                 case INC_EOF:
 720                         SET_PIXMAP_AND_TEXT(errorpix, _("Error"));
 721                         break;
 722                 case INC_TIMEOUT:
 723                         SET_PIXMAP_AND_TEXT(errorpix, _("Timeout"));
 724                         break;
 725                 case INC_CANCEL:
 726                         SET_PIXMAP_AND_TEXT(okpix, _("Cancelled"));
 727                         if (!inc_dialog->show_dialog)
 728                                 cancelled = TRUE;
 729                         break;
 730                 default:
 731                         break;
 732                 }
 733
 734                 if (pop3_session->error_val == PS_AUTHFAIL) {
 735                         if(!prefs_common.no_recv_err_panel) {
 736                                 if((prefs_common.recv_dialog_mode == RECV_DIALOG_ALWAYS) ||
 737                                     ((prefs_common.recv_dialog_mode == RECV_DIALOG_MANUAL) && focus_window))
 738                                         manage_window_focus_in(inc_dialog->dialog->window, NULL, NULL);
 739                         }
 740                 }
 741
 742                 /* CLAWS: perform filtering actions on dropped message */
 743                 /* CLAWS: get default inbox (perhaps per account) */
 744                 if (pop3_session->ac_prefs->inbox) {
 745                         /* CLAWS: get destination folder / mailbox */
 746                         inbox = folder_find_item_from_identifier(pop3_session->ac_prefs->inbox);
 747                         if (!inbox)
 748                                 inbox = folder_get_default_inbox();
 749                 } else
 750                         inbox = folder_get_default_inbox();
 751
 752                 /* get list of messages in processing */
 753                 processing = folder_get_default_processing(pop3_session->ac_prefs->account_id);
 754                 folder_item_scan(processing);
 755                 msglist = folder_item_get_msg_list(processing);
 756
 757                 /* process messages */
 758                 folder_item_update_freeze();
 759
 760                 procmsg_msglist_filter(msglist, pop3_session->ac_prefs,
 761                                 &filtered, &unfiltered,
 762                                 pop3_session->ac_prefs->filter_on_recv);
 763
 764                 filtering_move_and_copy_msgs(msglist);
 765                 if (unfiltered != NULL)
 766                         folder_item_move_msgs(inbox, unfiltered);
 767
 768                 for(msglist_element = msglist; msglist_element != NULL;
 769                     msglist_element = msglist_element->next) {
 770                         procmsg_msginfo_free((MsgInfo**)&(msglist_element->data));
 771                 }
 772                 folder_item_update_thaw();
 773
 774                 g_slist_free(msglist);
 775                 g_slist_free(filtered);
 776                 g_slist_free(unfiltered);
 777
 778                 statusbar_pop_all();
 779
 780                 new_msgs += pop3_session->cur_total_num;
 781
 782                 pop3_write_uidl_list(pop3_session);
 783
 784                 if (inc_state != INC_SUCCESS && inc_state != INC_CANCEL) {
 785                         error_num++;
 786                         if (inc_dialog->show_dialog)
 787                                 manage_window_focus_in
 788                                         (inc_dialog->dialog->window,
 789                                          NULL, NULL);
 790                         inc_put_error(inc_state, pop3_session);
 791                         if (inc_dialog->show_dialog)
 792                                 manage_window_focus_out
 793                                         (inc_dialog->dialog->window,
 794                                          NULL, NULL);
 795                         if (inc_state == INC_NO_SPACE ||
 796                             inc_state == INC_IO_ERROR)
 797                                 break;
 798                 }
 799                 folder_item_free_cache(processing, TRUE);
 800
 801                 inc_session_destroy(session);
 802                 inc_dialog->queue_list =
 803                         g_list_remove(inc_dialog->queue_list, session);
 804         }
 805
 806 #undef SET_PIXMAP_AND_TEXT
 807
 808         if (new_msgs > 0)
 809                 fin_msg = g_strdup_printf(ngettext("Finished (%d new message)",
 810                                                    "Finished (%d new messages)",
 811                                                    new_msgs), new_msgs);
 812         else
 813                 fin_msg = g_strdup_printf(_("Finished (no new messages)"));
 814
 815         progress_dialog_set_label(inc_dialog->dialog, fin_msg);
 816
 817         while (inc_dialog->queue_list != NULL) {
 818                 session = inc_dialog->queue_list->data;
 819                 inc_session_destroy(session);
 820                 inc_dialog->queue_list =
 821                         g_list_remove(inc_dialog->queue_list, session);
 822         }
 823
 824         if (prefs_common.close_recv_dialog || !inc_dialog->show_dialog)
 825                 inc_progress_dialog_destroy(inc_dialog);
 826         else {
 827                 gtk_window_set_title(GTK_WINDOW(inc_dialog->dialog->window),
 828                                      fin_msg);
 829                 gtk_button_set_label(GTK_BUTTON(inc_dialog->dialog->cancel_btn),
 830                                      GTK_STOCK_CLOSE);
 831         }
 832
 833         g_free(fin_msg);
 834
 835         return new_msgs;
 836 }
 837
 838 static IncState inc_pop3_session_do(IncSession *session)
 839 {
 840         Pop3Session *pop3_session = POP3_SESSION(session->session);
 841         IncProgressDialog *inc_dialog = (IncProgressDialog *)session->data;
 842         PrefsAccount *ac = pop3_session->ac_prefs;
 843         gchar *server;
 844         gchar *account_name;
 845         gushort port;
 846         gchar *buf;
 847         ProxyInfo *proxy_info = NULL;
 848
 849         debug_print("getting new messages of account %s...\n",
 850                     ac->account_name);
 851
 852         ac->last_pop_login_time = time(NULL);
 853
 854         buf = g_strdup_printf(_("%s: Retrieving new messages"),
 855                               ac->recv_server);
 856         gtk_window_set_title(GTK_WINDOW(inc_dialog->dialog->window), buf);
 857         g_free(buf);
 858
 859         server = ac->recv_server;
 860         account_name = ac->account_name;
 861         port = pop3_get_port(pop3_session);
 862
 863 #ifdef USE_GNUTLS
 864         SESSION(pop3_session)->ssl_type = ac->ssl_pop;
 865         if (ac->ssl_pop != SSL_NONE)
 866                 SESSION(pop3_session)->nonblocking =
 867                         ac->use_nonblocking_ssl;
 868 #else
 869         if (ac->ssl_pop != SSL_NONE) {
 870                 if (alertpanel_full(_("Insecure connection"),
 871                         _("This connection is configured to be secured "
 872                           "using SSL/TLS, but SSL/TLS is not available "
 873                           "in this build of Claws Mail. \n\n"
 874                           "Do you want to continue connecting to this "
 875                           "server? The communication would not be "
 876                           "secure."),
 877                           GTK_STOCK_CANCEL, _("Con_tinue connecting"),
 878                           NULL, FALSE, NULL, ALERT_WARNING,
 879                           G_ALERTDEFAULT) != G_ALERTALTERNATE)
 880                         return INC_CANCEL;
 881         }
 882 #endif
 883
 884         buf = g_strdup_printf(_("Account '%s': Connecting to POP3 server: %s:%d..."),
 885                                 account_name, server, port);
 886         statusbar_print_all("%s", buf);
 887         log_message(LOG_PROTOCOL, "%s\n", buf);
 888
 889         progress_dialog_set_label(inc_dialog->dialog, buf);
 890
 891         if (ac->use_proxy) {
 892                 if (ac->use_default_proxy) {
 893                         proxy_info = (ProxyInfo *)&(prefs_common.proxy_info);
 894                         if (proxy_info->use_proxy_auth)
 895                                 proxy_info->proxy_pass = passwd_store_get(PWS_CORE, PWS_CORE_PROXY,
 896                                         PWS_CORE_PROXY_PASS);
 897                 } else {
 898                         proxy_info = (ProxyInfo *)&(ac->proxy_info);
 899                         if (proxy_info->use_proxy_auth)
 900                                 proxy_info->proxy_pass = passwd_store_get_account(ac->account_id,
 901                                         PWS_ACCOUNT_PROXY_PASS);
 902                 }
 903         }
 904         SESSION(pop3_session)->proxy_info = proxy_info;
 905
 906         GTK_EVENTS_FLUSH();
 907         g_free(buf);
 908
 909         session_set_timeout(SESSION(pop3_session),
 910                             prefs_common.io_timeout_secs * 1000);
 911
 912         if (session_connect(SESSION(pop3_session), server, port) < 0) {
 913                 if(!prefs_common.no_recv_err_panel) {
 914                         if((prefs_common.recv_dialog_mode == RECV_DIALOG_ALWAYS) ||
 915                             ((prefs_common.recv_dialog_mode == RECV_DIALOG_MANUAL) && focus_window)) {
 916                                 manage_window_focus_in(inc_dialog->dialog->window, NULL, NULL);
 917                         }
 918                         alertpanel_error(_("Can't connect to POP3 server: %s:%d"),
 919                                          server, port);
 920                         manage_window_focus_out(inc_dialog->dialog->window, NULL, NULL);
 921                 } else {
 922                         log_error(LOG_PROTOCOL, _("Can't connect to POP3 server: %s:%d\n"),
 923                             server, port);
 924                 }
 925                 session->inc_state = INC_CONNECT_ERROR;
 926                 statusbar_pop_all();
 927                 return INC_CONNECT_ERROR;
 928         }
 929
 930         while (session_is_running(SESSION(pop3_session)) &&
 931                session->inc_state != INC_CANCEL)
 932                 gtk_main_iteration();
 933
 934         if (session->inc_state == INC_SUCCESS) {
 935                 switch (pop3_session->error_val) {
 936                 case PS_SUCCESS:
 937                         switch (SESSION(pop3_session)->state) {
 938                         case SESSION_ERROR:
 939                                 if (pop3_session->state == POP3_READY)
 940                                         session->inc_state = INC_CONNECT_ERROR;
 941                                 else
 942                                         session->inc_state = INC_ERROR;
 943                                 break;
 944                         case SESSION_EOF:
 945                                 session->inc_state = INC_EOF;
 946                                 break;
 947                         case SESSION_TIMEOUT:
 948                                 session->inc_state = INC_TIMEOUT;
 949                                 break;
 950                         default:
 951                                 session->inc_state = INC_SUCCESS;
 952                                 break;
 953                         }
 954                         break;
 955                 case PS_AUTHFAIL:
 956                         session->inc_state = INC_AUTH_FAILED;
 957                         break;
 958                 case PS_IOERR:
 959                         session->inc_state = INC_IO_ERROR;
 960                         break;
 961                 case PS_SOCKET:
 962                         session->inc_state = INC_SOCKET_ERROR;
 963                         break;
 964                 case PS_LOCKBUSY:
 965                         session->inc_state = INC_LOCKED;
 966                         break;
 967                 default:
 968                         session->inc_state = INC_ERROR;
 969                         break;
 970                 }
 971         }
 972
 973         session_disconnect(SESSION(pop3_session));
 974         statusbar_pop_all();
 975
 976         return session->inc_state;
 977 }
 978
 979 static void inc_progress_dialog_update(IncProgressDialog *inc_dialog,
 980                                        IncSession *inc_session)
 981 {
 982         inc_progress_dialog_set_label(inc_dialog, inc_session);
 983         inc_progress_dialog_set_progress(inc_dialog, inc_session);
 984 }
 985
 986 static void inc_progress_dialog_set_label(IncProgressDialog *inc_dialog,
 987                                           IncSession *inc_session)
 988 {
 989         ProgressDialog *dialog = inc_dialog->dialog;
 990         Pop3Session *session;
 991
 992         cm_return_if_fail(inc_session != NULL);
 993
 994         session = POP3_SESSION(inc_session->session);
 995
 996         switch (session->state) {
 997         case POP3_GREETING:
 998                 break;
 999         case POP3_GETAUTH_USER:
1000         case POP3_GETAUTH_PASS:
1001         case POP3_GETAUTH_APOP:
1002                 progress_dialog_set_label(dialog, _("Authenticating..."));
1003                 statusbar_pop_all();
1004                 statusbar_print_all(_("Retrieving messages from %s (%s)..."),
1005                                     SESSION(session)->server,
1006                                     session->ac_prefs->account_name);
1007                 break;
1008         case POP3_GETRANGE_STAT:
1009                 progress_dialog_set_label
1010                         (dialog, _("Getting the number of new messages (STAT)..."));
1011                 break;
1012         case POP3_GETRANGE_LAST:
1013                 progress_dialog_set_label
1014                         (dialog, _("Getting the number of new messages (LAST)..."));
1015                 break;
1016         case POP3_GETRANGE_UIDL:
1017                 progress_dialog_set_label
1018                         (dialog, _("Getting the number of new messages (UIDL)..."));
1019                 break;
1020         case POP3_GETSIZE_LIST:
1021                 progress_dialog_set_label
1022                         (dialog, _("Getting the size of messages (LIST)..."));
1023                 break;
1024         case POP3_RETR:
1025         case POP3_RETR_RECV:
1026         case POP3_DELETE:
1027                 break;
1028         case POP3_LOGOUT:
1029                 progress_dialog_set_label(dialog, _("Quitting"));
1030                 break;
1031         default:
1032                 break;
1033         }
1034 }
1035
1036 static void inc_progress_dialog_set_progress(IncProgressDialog *inc_dialog,
1037                                              IncSession *inc_session)
1038 {
1039         gchar buf[MESSAGEBUFSIZE];
1040         Pop3Session *pop3_session = POP3_SESSION(inc_session->session);
1041         gchar *total_size_str;
1042         gint cur_total;
1043         gint total;
1044
1045         if (!pop3_session->new_msg_exist) return;
1046
1047         cur_total = inc_session->cur_total_bytes;
1048         total = pop3_session->total_bytes;
1049         if (pop3_session->state == POP3_RETR ||
1050             pop3_session->state == POP3_RETR_RECV ||
1051             pop3_session->state == POP3_DELETE) {
1052                 Xstrdup_a(total_size_str, to_human_readable((goffset)total), return);
1053                 g_snprintf(buf, sizeof(buf),
1054                            _("Retrieving message (%d / %d) (%s / %s)"),
1055                            pop3_session->cur_msg, pop3_session->count,
1056                            to_human_readable((goffset)cur_total), total_size_str);
1057                 progress_dialog_set_label(inc_dialog->dialog, buf);
1058         }
1059
1060         progress_dialog_set_fraction
1061                 (inc_dialog->dialog, (total == 0) ? 0: (gfloat)cur_total / (gfloat)total);
1062
1063         statusbar_progress_all(pop3_session->cur_msg, pop3_session->count, 1);
1064
1065         if (pop3_session->cur_total_num > 0) {
1066                 g_snprintf(buf, sizeof(buf),
1067                            ngettext("Retrieving (%d message (%s) received)",
1068                                     "Retrieving (%d messages (%s) received)",
1069                                     pop3_session->cur_total_num),
1070                            pop3_session->cur_total_num,
1071                            to_human_readable
1072                            ((goffset)pop3_session->cur_total_recv_bytes));
1073                 progress_dialog_list_set_status(inc_dialog->dialog,
1074                                                 inc_dialog->cur_row,
1075                                                 buf);
1076         }
1077 }
1078
1079 static void inc_progress_dialog_update_periodic(IncProgressDialog *inc_dialog,
1080                                                 IncSession *inc_session)
1081 {
1082         GTimeVal tv_cur;
1083         GTimeVal tv_result;
1084         gint msec;
1085
1086         g_get_current_time(&tv_cur);
1087
1088         tv_result.tv_sec = tv_cur.tv_sec - inc_dialog->progress_tv.tv_sec;
1089         tv_result.tv_usec = tv_cur.tv_usec - inc_dialog->progress_tv.tv_usec;
1090         if (tv_result.tv_usec < 0) {
1091                 tv_result.tv_sec--;
1092                 tv_result.tv_usec += G_USEC_PER_SEC;
1093         }
1094
1095         msec = tv_result.tv_sec * 1000 + tv_result.tv_usec / 1000;
1096         if (msec > PROGRESS_UPDATE_INTERVAL) {
1097                 inc_progress_dialog_update(inc_dialog, inc_session);
1098                 inc_dialog->progress_tv.tv_sec = tv_cur.tv_sec;
1099                 inc_dialog->progress_tv.tv_usec = tv_cur.tv_usec;
1100         }
1101 }
1102
1103 static gint inc_recv_data_progressive(Session *session, guint cur_len,
1104                                       guint total_len, gpointer data)
1105 {
1106         IncSession *inc_session = (IncSession *)data;
1107         Pop3Session *pop3_session = POP3_SESSION(session);
1108         IncProgressDialog *inc_dialog;
1109         gint cur_total;
1110
1111         cm_return_val_if_fail(inc_session != NULL, -1);
1112
1113         if (pop3_session->state != POP3_RETR &&
1114             pop3_session->state != POP3_RETR_RECV &&
1115             pop3_session->state != POP3_DELETE &&
1116             pop3_session->state != POP3_LOGOUT) return 0;
1117
1118         if (!pop3_session->new_msg_exist) return 0;
1119
1120         cur_total = pop3_session->cur_total_bytes + cur_len;
1121         if (cur_total > pop3_session->total_bytes)
1122                 cur_total = pop3_session->total_bytes;
1123         inc_session->cur_total_bytes = cur_total;
1124
1125         inc_dialog = (IncProgressDialog *)inc_session->data;
1126         inc_progress_dialog_update_periodic(inc_dialog, inc_session);
1127
1128         return 0;
1129 }
1130
1131 static gint inc_recv_data_finished(Session *session, guint len, gpointer data)
1132 {
1133         IncSession *inc_session = (IncSession *)data;
1134         IncProgressDialog *inc_dialog;
1135
1136         cm_return_val_if_fail(inc_session != NULL, -1);
1137
1138         inc_dialog = (IncProgressDialog *)inc_session->data;
1139
1140         inc_recv_data_progressive(session, 0, 0, inc_session);
1141
1142         if (POP3_SESSION(session)->state == POP3_LOGOUT) {
1143                 inc_progress_dialog_update(inc_dialog, inc_session);
1144         }
1145
1146         return 0;
1147 }
1148
1149 static gint inc_recv_message(Session *session, const gchar *msg, gpointer data)
1150 {
1151         IncSession *inc_session = (IncSession *)data;
1152         IncProgressDialog *inc_dialog;
1153
1154         cm_return_val_if_fail(inc_session != NULL, -1);
1155
1156         inc_dialog = (IncProgressDialog *)inc_session->data;
1157
1158         switch (POP3_SESSION(session)->state) {
1159         case POP3_GETAUTH_USER:
1160         case POP3_GETAUTH_PASS:
1161         case POP3_GETAUTH_APOP:
1162         case POP3_GETRANGE_STAT:
1163         case POP3_GETRANGE_LAST:
1164         case POP3_GETRANGE_UIDL:
1165         case POP3_GETSIZE_LIST:
1166                 inc_progress_dialog_update(inc_dialog, inc_session);
1167                 break;
1168         case POP3_RETR:
1169                 inc_recv_data_progressive(session, 0, 0, inc_session);
1170                 break;
1171         case POP3_LOGOUT:
1172                 inc_progress_dialog_update(inc_dialog, inc_session);
1173                 break;
1174         default:
1175                 break;
1176         }
1177
1178         return 0;
1179 }
1180
1181 static gint inc_drop_message(Pop3Session *session, const gchar *file)
1182 {
1183         FolderItem *inbox;
1184         FolderItem *dropfolder;
1185         IncSession *inc_session = (IncSession *)(SESSION(session)->data);
1186         gint msgnum;
1187
1188         cm_return_val_if_fail(inc_session != NULL, -1);
1189
1190         if (session->ac_prefs->inbox) {
1191                 inbox = folder_find_item_from_identifier
1192                         (session->ac_prefs->inbox);
1193                 if (!inbox)
1194                         inbox = folder_get_default_inbox();
1195         } else
1196                 inbox = folder_get_default_inbox();
1197         if (!inbox) {
1198                 claws_unlink(file);
1199                 return -1;
1200         }
1201
1202         /* CLAWS: claws uses a global .processing folder for the filtering. */
1203         dropfolder = folder_get_default_processing(session->ac_prefs->account_id);
1204
1205         /* add msg file to drop folder */
1206         if ((msgnum = folder_item_add_msg(
1207                         dropfolder, file, NULL, TRUE)) < 0) {
1208                 claws_unlink(file);
1209                 return -1;
1210         }
1211
1212         return 0;
1213 }
1214
1215 static void inc_put_error(IncState istate, Pop3Session *session)
1216 {
1217         gchar *log_msg = NULL;
1218         gchar *err_msg = NULL;
1219         gboolean fatal_error = FALSE;
1220
1221         switch (istate) {
1222         case INC_CONNECT_ERROR:
1223                 fatal_error = TRUE;
1224                 if (prefs_common.no_recv_err_panel)
1225                         break;
1226                 err_msg = g_strdup_printf(_("Connection to %s:%d failed."),
1227                                           SESSION(session)->server,
1228                                           SESSION(session)->port);
1229                 break;
1230         case INC_ERROR:
1231                 log_msg = _("Error occurred while processing mail.");
1232                 fatal_error = TRUE;
1233                 if (prefs_common.no_recv_err_panel)
1234                         break;
1235                 if (session->error_msg)
1236                         err_msg = g_strdup_printf
1237                                 (_("Error occurred while processing mail:\n%s"),
1238                                  session->error_msg);
1239                 else
1240                         err_msg = g_strdup(log_msg);
1241                 break;
1242         case INC_NO_SPACE:
1243                 log_msg = _("No disk space left.");
1244                 err_msg = g_strdup(log_msg);
1245                 fatal_error = TRUE;
1246                 break;
1247         case INC_IO_ERROR:
1248                 log_msg = _("Can't write file.");
1249                 err_msg = g_strdup(log_msg);
1250                 fatal_error = TRUE;
1251                 break;
1252         case INC_SOCKET_ERROR:
1253                 log_msg = _("Socket error.");
1254                 if (prefs_common.no_recv_err_panel)
1255                         break;
1256                 err_msg = g_strdup_printf(_("Socket error on connection to %s:%d."),
1257                                           SESSION(session)->server,
1258                                           SESSION(session)->port);
1259                 break;
1260         case INC_EOF:
1261                 log_msg = _("Connection closed by the remote host.");
1262                 if (prefs_common.no_recv_err_panel)
1263                         break;
1264                 err_msg = g_strdup_printf(_("Connection to %s:%d closed by the remote host."),
1265                                           SESSION(session)->server,
1266                                           SESSION(session)->port);
1267                 break;
1268         case INC_LOCKED:
1269                 log_msg = _("Mailbox is locked.");
1270                 if (prefs_common.no_recv_err_panel)
1271                         break;
1272                 if (session->error_msg)
1273                         err_msg = g_strdup_printf(_("Mailbox is locked:\n%s"),
1274                                                   session->error_msg);
1275                 else
1276                         err_msg = g_strdup(log_msg);
1277                 break;
1278         case INC_AUTH_FAILED:
1279                 log_msg = _("Authentication failed.");
1280                 fatal_error = TRUE;
1281                 if (prefs_common.no_recv_err_panel)
1282                         break;
1283                 if (session->error_msg)
1284                         err_msg = g_strdup_printf
1285                                 (_("Authentication failed:\n%s"), session->error_msg);
1286                 else
1287                         err_msg = g_strdup(log_msg);
1288                 break;
1289         case INC_TIMEOUT:
1290                 log_msg = _("Session timed out. You may be able to "
1291                             "recover by increasing the timeout value in "
1292                             "Preferences/Other/Miscellaneous.");
1293                 if (prefs_common.no_recv_err_panel)
1294                         break;
1295                 err_msg = g_strdup_printf(_("Connection to %s:%d timed out."),
1296                                           SESSION(session)->server,
1297                                           SESSION(session)->port);
1298                 break;
1299         default:
1300                 break;
1301         }
1302
1303         if (log_msg) {
1304                 if (fatal_error)
1305                         log_error(LOG_PROTOCOL, "%s\n", log_msg);
1306                 else
1307                         log_warning(LOG_PROTOCOL, "%s\n", log_msg);
1308         }
1309         if (prefs_common.no_recv_err_panel && fatal_error)
1310                 mainwindow_show_error();
1311
1312         if (err_msg) {
1313                 alertpanel_error_log("%s", err_msg);
1314                 g_free(err_msg);
1315         }
1316 }
1317
1318 static void inc_cancel(IncProgressDialog *dialog)
1319 {
1320         IncSession *session;
1321
1322         cm_return_if_fail(dialog != NULL);
1323
1324         if (dialog->queue_list == NULL) {
1325                 inc_progress_dialog_destroy(dialog);
1326                 return;
1327         }
1328
1329         session = dialog->queue_list->data;
1330
1331         session->inc_state = INC_CANCEL;
1332
1333         log_message(LOG_PROTOCOL, _("Incorporation cancelled\n"));
1334 }
1335
1336 gboolean inc_is_active(void)
1337 {
1338         return (inc_dialog_list != NULL);
1339 }
1340
1341 void inc_cancel_all(void)
1342 {
1343         GList *cur;
1344
1345         for (cur = inc_dialog_list; cur != NULL; cur = cur->next)
1346                 inc_cancel((IncProgressDialog *)cur->data);
1347 }
1348
1349 static void inc_showlog_cb(GtkWidget *widget, gpointer data)
1350 {
1351         MainWindow *mainwin = mainwindow_get_mainwindow();
1352
1353         log_window_show(mainwin->logwin);
1354 }
1355
1356 static void inc_cancel_cb(GtkWidget *widget, gpointer data)
1357 {
1358         inc_cancel((IncProgressDialog *)data);
1359 }
1360
1361 static gint inc_dialog_delete_cb(GtkWidget *widget, GdkEventAny *event,
1362                                  gpointer data)
1363 {
1364         IncProgressDialog *dialog = (IncProgressDialog *)data;
1365
1366         if (dialog->queue_list == NULL)
1367                 inc_progress_dialog_destroy(dialog);
1368
1369         return TRUE;
1370 }
1371
1372 static gint inc_spool_account(PrefsAccount *account)
1373 {
1374         FolderItem *inbox;
1375         gchar *mbox;
1376         gint result;
1377
1378         if (account->local_inbox) {
1379                 inbox = folder_find_item_from_identifier(account->local_inbox);
1380                 if (!inbox)
1381                         inbox = folder_get_default_inbox();
1382         } else
1383                 inbox = folder_get_default_inbox();
1384
1385         if (account->local_mbox) {
1386                 if (is_file_exist(account->local_mbox))
1387                         mbox = g_strdup(account->local_mbox);
1388                 else if (is_dir_exist(account->local_mbox))
1389                         mbox = g_strconcat(account->local_mbox, G_DIR_SEPARATOR_S,
1390                                            g_get_user_name(), NULL);
1391                 else {
1392                         debug_print("%s: local mailbox not found.\n",
1393                                     account->local_mbox);
1394                         return -1;
1395                 }
1396         } else {
1397                 debug_print("local mailbox not set in account info.\n");
1398                 return -1;
1399         }
1400
1401         result = get_spool(inbox, mbox, account);
1402         g_free(mbox);
1403
1404         statusbar_pop_all();
1405
1406         return result;
1407 }
1408
1409 static gint get_spool(FolderItem *dest, const gchar *mbox, PrefsAccount *account)
1410 {
1411         gint msgs, size;
1412         gint lockfd;
1413         gchar tmp_mbox[MAXPATHLEN + 1];
1414
1415         cm_return_val_if_fail(dest != NULL, -1);
1416         cm_return_val_if_fail(mbox != NULL, -1);
1417         cm_return_val_if_fail(account != NULL, -1);
1418
1419         if (!is_file_exist(mbox) || (size = get_file_size(mbox)) == 0) {
1420                 debug_print("%s: no messages in local mailbox.\n", mbox);
1421                 return 0;
1422         } else if (size < 0)
1423                 return -1;
1424
1425         if ((lockfd = lock_mbox(mbox, LOCK_FLOCK)) < 0)
1426                 return -1;
1427
1428         g_snprintf(tmp_mbox, sizeof(tmp_mbox), "%s%ctmpmbox.%p",
1429                    get_tmp_dir(), G_DIR_SEPARATOR, mbox);
1430
1431         if (copy_mbox(lockfd, tmp_mbox) < 0) {
1432                 unlock_mbox(mbox, lockfd, LOCK_FLOCK);
1433                 return -1;
1434         }
1435
1436         debug_print("Getting new messages from %s into %s...\n",
1437                     mbox, dest->path);
1438
1439         msgs = proc_mbox(dest, tmp_mbox, account->filter_on_recv, account);
1440
1441         claws_unlink(tmp_mbox);
1442         if (msgs >= 0) empty_mbox(mbox);
1443         unlock_mbox(mbox, lockfd, LOCK_FLOCK);
1444
1445         return msgs;
1446 }
1447
1448 void inc_lock_real(void)
1449 {
1450         inc_lock_count++;
1451 }
1452
1453 void inc_unlock_real(void)
1454 {
1455         if (inc_lock_count > 0)
1456                 inc_lock_count--;
1457 }
1458
1459 static guint autocheck_timer = 0;
1460 static gpointer autocheck_data = NULL;
1461
1462 static void inc_notify_cmd(gint new_msgs, gboolean notify)
1463 {
1464         gchar *buf, *numpos, *ret_str;
1465         gssize by_read = 0, by_written = 0;
1466
1467         if (!(new_msgs && notify && prefs_common.newmail_notify_cmd &&
1468             *prefs_common.newmail_notify_cmd))
1469                      return;
1470
1471         buf = g_strdup(prefs_common.newmail_notify_cmd);
1472         if ((numpos = strstr(buf, "%d")) != NULL) {
1473                 gchar *buf2;
1474
1475                 *numpos = '\0';
1476                 buf2 = g_strdup_printf("%s%d%s", buf, new_msgs, numpos + 2);
1477                 g_free(buf);
1478                 buf = buf2;
1479         }
1480
1481         ret_str = g_locale_from_utf8(buf, strlen(buf), &by_read, &by_written,
1482                                      NULL);
1483         if (ret_str && by_written) {
1484                 g_free(buf);
1485                 buf = ret_str;
1486         }
1487         debug_print("executing new mail notification command: %s\n", buf);
1488         execute_command_line(buf, TRUE, NULL);
1489
1490         g_free(buf);
1491 }
1492
1493 void inc_autocheck_timer_init(MainWindow *mainwin)
1494 {
1495         autocheck_data = mainwin;
1496         inc_autocheck_timer_set();
1497 }
1498
1499 static void inc_autocheck_timer_set_interval(guint _interval)
1500 {
1501         guint interval = _interval;
1502
1503         /* Convert the interval to seconds if needed. */
1504         if (_interval % 1000 == 0)
1505                 interval /= 1000;
1506
1507         inc_autocheck_timer_remove();
1508         /* last test is to avoid re-enabling auto_check after modifying
1509            the common preferences */
1510         if (prefs_common.autochk_newmail && autocheck_data
1511             && prefs_common.work_offline == FALSE) {
1512                         autocheck_timer =
1513                                 g_timeout_add_seconds(interval, inc_autocheck_func, autocheck_data);
1514                 debug_print("added global inc timer %d at %u seconds\n",
1515                                 autocheck_timer, interval);
1516         }
1517 }
1518
1519 void inc_autocheck_timer_set(void)
1520 {
1521         inc_autocheck_timer_set_interval(prefs_common.autochk_itv * 1000);
1522 }
1523
1524 void inc_autocheck_timer_remove(void)
1525 {
1526         if (autocheck_timer) {
1527                 debug_print("removed global inc timer %d\n", autocheck_timer);
1528                 g_source_remove(autocheck_timer);
1529                 autocheck_timer = 0;
1530         }
1531 }
1532
1533 static gint inc_autocheck_func(gpointer data)
1534 {
1535         MainWindow *mainwin = (MainWindow *)data;
1536
1537         if (inc_lock_count) {
1538                 debug_print("global inc: autocheck is locked.\n");
1539                 inc_autocheck_timer_set_interval(1000);
1540                 return FALSE;
1541         }
1542
1543         inc_all_account_mail(mainwin, TRUE, FALSE, prefs_common.newmail_notify_auto);
1544         inc_autocheck_timer_set();
1545
1546         return FALSE;
1547 }
1548
1549 static gboolean inc_account_autocheck_func(gpointer data)
1550 {
1551         PrefsAccount *account = (PrefsAccount *)data;
1552         GList *list = NULL;
1553
1554         cm_return_val_if_fail(account != NULL, FALSE);
1555
1556         debug_print("account %d: inc_account_autocheck_func\n",
1557                         account->account_id);
1558
1559         list = g_list_append(list, account);
1560         inc_account_list_mail(mainwindow_get_mainwindow(),
1561                         list, TRUE, prefs_common.newmail_notify_auto);
1562         g_list_free(list);
1563
1564         inc_account_autocheck_timer_set_interval(account);
1565
1566         return FALSE;
1567 }
1568
1569 void inc_account_autocheck_timer_remove(PrefsAccount *account)
1570 {
1571         cm_return_if_fail(account != NULL);
1572
1573         if (account->autocheck_timer != 0) {
1574                 g_source_remove(account->autocheck_timer);
1575                 debug_print("INC: account %d: removed inc timer %d\n", account->account_id,
1576                                 account->autocheck_timer);
1577                 account->autocheck_timer = 0;
1578         }
1579 }
1580
1581 void inc_account_autocheck_timer_set_interval(PrefsAccount *account)
1582 {
1583         cm_return_if_fail(account != NULL);
1584
1585         inc_account_autocheck_timer_remove(account);
1586
1587         if (account->autochk_use_default
1588                         || !account->autochk_use_custom
1589                         || account->autochk_itv == 0)
1590                 return;
1591
1592         account->autocheck_timer = g_timeout_add_seconds(
1593                         account->autochk_itv, inc_account_autocheck_func, account);
1594         debug_print("INC: account %d: added inc timer %d at %u seconds\n",
1595                         account->account_id, account->autocheck_timer, account->autochk_itv);
1596 }
1597
1598 gboolean inc_offline_should_override(gboolean force_ask, const gchar *msg)
1599 {
1600         gint length = 10; /* seconds */
1601         gint answer = G_ALERTDEFAULT;
1602
1603 #ifdef HAVE_NETWORKMANAGER_SUPPORT
1604         /* If no network connection is available, override is not possible */
1605         if(!networkmanager_is_online(NULL))
1606                 return FALSE;
1607 #endif
1608
1609         if (prefs_common.autochk_newmail)
1610                 length = prefs_common.autochk_itv; /* seconds */
1611
1612         if (force_ask) {
1613                 inc_offline_overridden_no = (time_t)0;
1614         }
1615
1616         if (prefs_common.work_offline) {
1617                 gchar *tmp = NULL;
1618
1619                 if (time(NULL) - inc_offline_overridden_yes < length * 60) /* seconds */
1620                          return TRUE;
1621                 else if (time(NULL) - inc_offline_overridden_no < length * 60) /* seconds */
1622                          return FALSE;
1623
1624                 if (!force_ask) {
1625                         gchar *unit = _("seconds");
1626
1627                         /* show the offline override time (length) using the must appropriate unit:
1628                            the biggest unit possible (hours, minutes, seconds), provided that there
1629                            is not inferior unit involved: 1 hour, 150 minutes, 25 minutes, 90 minutes,
1630                            30 seconds, 90 seconds. */
1631                         if ((length / 3600) > 0) { /* hours? */
1632                                 if (((length % 3600) % 60) == 0) { /* no seconds left? */
1633                                         if ((length % 3600) > 0) { /* minutes left? */
1634                                                 length = length / 60;
1635                                                 unit = ngettext("minute", "minutes", length);
1636                                         } else {
1637                                                 length = length / 3600;
1638                                                 unit = ngettext("hour", "hours", length);
1639                                         }
1640                                 } /* else: seconds */
1641                         } else {
1642                                 if ((length / 60) > 0) { /* minutes left? */
1643                                         if ((length % 60) == 0) {
1644                                                 length = length / 60;
1645                                                 unit = ngettext("minute", "minutes", length);
1646                                         }
1647                                 } /* else: seconds */
1648                         }
1649                         tmp = g_strdup_printf(
1650                                 _("%s%sYou're working offline. Override for %d %s?"),
1651                                 msg?msg:"",
1652                                 msg?"\n\n":"",
1653                                 length, unit);
1654                 } else
1655                         tmp = g_strdup_printf(
1656                                 _("%s%sYou're working offline. Override?"),
1657                                 msg?msg:"",
1658                                 msg?"\n\n":"");
1659
1660                 answer = alertpanel(_("Offline warning"),
1661                                tmp,
1662                                GTK_STOCK_NO, GTK_STOCK_YES,
1663                                 !force_ask? _("On_ly once"):NULL, ALERTFOCUS_SECOND);
1664                 g_free(tmp);
1665                 if (answer == G_ALERTALTERNATE) {
1666                         inc_offline_overridden_yes = time(NULL);
1667                         return TRUE;
1668                 } else if (answer == G_ALERTDEFAULT) {
1669                         if (!force_ask)
1670                                 inc_offline_overridden_no  = time(NULL);
1671                         return FALSE;
1672                 } else {
1673                         inc_reset_offline_override_timers();
1674                         return TRUE;
1675                 }
1676         }
1677         return TRUE;
1678 }
1679
1680 void inc_reset_offline_override_timers()
1681 {
1682         debug_print("resetting offline override timers\n");
1683         inc_offline_overridden_yes = (time_t)0;
1684         inc_offline_overridden_no  = (time_t)0;
1685 }