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