Add a per-account preference to allow automatically accepting unknown
[claws.git] / src / send_message.c
1 /*
2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
3  * Copyright (C) 1999-2012 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
20 #ifdef HAVE_CONFIG_H
21 #  include "config.h"
22 #include "claws-features.h"
23 #endif
24
25 #include "defs.h"
26
27 #include <glib.h>
28 #include <glib/gi18n.h>
29 #include <gtk/gtk.h>
30 #include <stdio.h>
31 #include <string.h>
32 #include <signal.h>
33 #include <sys/types.h>
34 #ifndef G_OS_WIN32
35 #include <sys/wait.h>
36 #endif
37
38 #include "send_message.h"
39 #include "session.h"
40 #include "ssl.h"
41 #include "smtp.h"
42 #include "prefs_common.h"
43 #include "prefs_account.h"
44 #include "procheader.h"
45 #include "account.h"
46 #include "progressdialog.h"
47 #include "statusbar.h"
48 #include "inputdialog.h"
49 #include "alertpanel.h"
50 #include "manage_window.h"
51 #include "logwindow.h"
52 #include "socket.h"
53 #include "utils.h"
54 #include "gtkutils.h"
55 #include "inc.h"
56 #include "log.h"
57
58 typedef struct _SendProgressDialog      SendProgressDialog;
59
60 struct _SendProgressDialog
61 {
62         ProgressDialog *dialog;
63         Session *session;
64         gboolean cancelled;
65 };
66
67 static SendProgressDialog *send_dialog = NULL;
68
69 static gint send_recv_message           (Session                *session,
70                                          const gchar            *msg,
71                                          gpointer                data);
72 static gint send_send_data_progressive  (Session                *session,
73                                          guint                   cur_len,
74                                          guint                   total_len,
75                                          gpointer                data);
76 static gint send_send_data_finished     (Session                *session,
77                                          guint                   len,
78                                          gpointer                data);
79
80 static SendProgressDialog *send_progress_dialog_create(void);
81 static void send_progress_dialog_destroy(SendProgressDialog *dialog);
82
83 static void send_showlog_button_cb      (GtkWidget      *widget,
84                                          gpointer        data);
85 static void send_cancel_button_cb       (GtkWidget      *widget,
86                                          gpointer        data);
87
88 static void send_put_error              (Session        *session);
89
90
91 void send_cancel(void)
92 {
93         if (send_dialog)
94                 send_cancel_button_cb(NULL, send_dialog);
95 }
96
97 gboolean send_is_active(void)
98 {
99         return (send_dialog != NULL);
100 }
101
102 gint send_message(const gchar *file, PrefsAccount *ac_prefs, GSList *to_list)
103 {
104         FILE *fp;
105         gint val;
106
107         cm_return_val_if_fail(file != NULL, -1);
108         cm_return_val_if_fail(ac_prefs != NULL, -1);
109         cm_return_val_if_fail(to_list != NULL, -1);
110
111         if ((fp = g_fopen(file, "rb")) == NULL) {
112                 FILE_OP_ERROR(file, "fopen");
113                 return -1;
114         }
115
116         inc_lock();
117         if (ac_prefs->use_mail_command && ac_prefs->mail_command &&
118             (*ac_prefs->mail_command)) {
119                 val = send_message_local(ac_prefs->mail_command, fp);
120                 fclose(fp);
121                 inc_unlock();
122                 return val;
123         } else {
124                 val = send_message_smtp(ac_prefs, to_list, fp);
125                 
126                 fclose(fp);
127                 inc_unlock();
128                 return val;
129         }
130 }
131
132 enum
133 {
134         Q_SENDER     = 0,
135         Q_SMTPSERVER = 1,
136         Q_RECIPIENTS = 2,
137         Q_ACCOUNT_ID = 3
138 };
139
140 gint send_message_local(const gchar *command, FILE *fp)
141 {
142         gchar **argv;
143         GPid pid;
144         gint child_stdin;
145         gchar buf[BUFFSIZE];
146         gboolean err = FALSE;
147         gint status;
148
149         cm_return_val_if_fail(command != NULL, -1);
150         cm_return_val_if_fail(fp != NULL, -1);
151
152         log_message(LOG_PROTOCOL, _("Sending message using command: %s\n"), command);
153
154         argv = strsplit_with_quote(command, " ", 0);
155
156         if (g_spawn_async_with_pipes(NULL, argv, NULL,
157 #ifdef G_OS_WIN32
158                                      0,
159 #else
160                                      G_SPAWN_DO_NOT_REAP_CHILD,
161 #endif
162                                      NULL, NULL,
163                                      &pid, &child_stdin, NULL, NULL,
164                                      NULL) == FALSE) {
165                 g_snprintf(buf, sizeof(buf),
166                            _("Couldn't execute command: %s"), command);
167                 log_warning(LOG_PROTOCOL, "%s\n", buf);
168                 alertpanel_error("%s", buf);
169                 g_strfreev(argv);
170                 return -1;
171         }
172         g_strfreev(argv);
173
174         while (fgets(buf, sizeof(buf), fp) != NULL) {
175                 strretchomp(buf);
176                 if (buf[0] == '.' && buf[1] == '\0') {
177                         if (fd_write_all(child_stdin, ".", 1) < 0) {
178                                 err = TRUE;
179                                 break;
180                         }
181                 }
182                 if (fd_write_all(child_stdin, buf, strlen(buf)) < 0 ||
183                     fd_write_all(child_stdin, "\n", 1) < 0) {
184                         err = TRUE;
185                         break;
186                 }
187         }
188
189         fd_close(child_stdin);
190
191 #ifndef G_OS_WIN32
192         waitpid(pid, &status, 0);
193         if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
194                 err = TRUE;
195 #endif
196
197         g_spawn_close_pid(pid);
198
199         if (err) {
200                 g_snprintf(buf, sizeof(buf),
201                            _("Error occurred while executing command: %s"),
202                            command);
203                 log_warning(LOG_PROTOCOL, "%s\n", buf);
204                 alertpanel_error("%s", buf);
205                 return -1;
206         }
207
208         return 0;
209 }
210
211 gint send_message_smtp_full(PrefsAccount *ac_prefs, GSList *to_list, FILE *fp, gboolean keep_session)
212 {
213         Session *session;
214         SMTPSession *smtp_session;
215         gushort port = 0;
216         gchar buf[BUFFSIZE];
217         gint ret = 0;
218         gboolean was_inited = FALSE;
219         MsgInfo *tmp_msginfo = NULL;
220         MsgFlags flags = {0, 0};
221         long fp_pos = 0;
222         gchar spec_from[BUFFSIZE];
223
224         cm_return_val_if_fail(ac_prefs != NULL, -1);
225         cm_return_val_if_fail(ac_prefs->address != NULL, -1);
226         cm_return_val_if_fail(ac_prefs->smtp_server != NULL, -1);
227         cm_return_val_if_fail(to_list != NULL, -1);
228         cm_return_val_if_fail(fp != NULL, -1);
229
230         /* get the From address used, not necessarily the ac_prefs',
231          * because it's editable. */
232
233         fp_pos = ftell(fp);
234         tmp_msginfo = procheader_parse_stream(fp, flags, TRUE, FALSE);
235         fseek(fp, fp_pos, SEEK_SET);
236
237         if (tmp_msginfo && tmp_msginfo->extradata && tmp_msginfo->extradata->resent_from) {
238                 strncpy2(spec_from, tmp_msginfo->extradata->resent_from, BUFFSIZE-1);
239                 extract_address(spec_from);
240         } else if (tmp_msginfo && tmp_msginfo->from) {
241                 strncpy2(spec_from, tmp_msginfo->from, BUFFSIZE-1);
242                 extract_address(spec_from);
243         } else {
244                 strncpy2(spec_from, ac_prefs->address, BUFFSIZE-1);
245         }
246         if (tmp_msginfo) {
247                 procmsg_msginfo_free(tmp_msginfo);
248         }
249
250         if (!ac_prefs->session) {
251                 /* we can't reuse a previously initialised session */
252                 session = smtp_session_new(ac_prefs);
253                 session->ssl_cert_auto_accept = ac_prefs->ssl_certs_auto_accept;
254
255                 smtp_session = SMTP_SESSION(session);
256
257                 if (ac_prefs->set_domain && ac_prefs->domain && strlen(ac_prefs->domain)) {
258                         smtp_session->hostname = g_strdup(ac_prefs->domain);
259                 } else {
260                         smtp_session->hostname = NULL;
261                 }
262
263 #ifdef USE_GNUTLS
264                 port = ac_prefs->set_smtpport ? ac_prefs->smtpport :
265                         ac_prefs->ssl_smtp == SSL_TUNNEL ? SSMTP_PORT : SMTP_PORT;
266                 session->ssl_type = ac_prefs->ssl_smtp;
267                 if (ac_prefs->ssl_smtp != SSL_NONE)
268                         session->nonblocking = ac_prefs->use_nonblocking_ssl;
269                 if (ac_prefs->set_gnutls_priority && ac_prefs->gnutls_priority &&
270                     strlen(ac_prefs->gnutls_priority))
271                         session->gnutls_priority = g_strdup(ac_prefs->gnutls_priority);
272 #else
273                 if (ac_prefs->ssl_smtp != SSL_NONE) {
274                         if (alertpanel_full(_("Insecure connection"),
275                                 _("This connection is configured to be secured "
276                                   "using SSL, but SSL is not available in this "
277                                   "build of Claws Mail. \n\n"
278                                   "Do you want to continue connecting to this "
279                                   "server? The communication would not be "
280                                   "secure."),
281                                   GTK_STOCK_CANCEL, _("Con_tinue connecting"),
282                                   NULL, FALSE, NULL, ALERT_WARNING,
283                                   G_ALERTDEFAULT) != G_ALERTALTERNATE) {
284                                 session_destroy(session);
285                                 return -1;
286                         }
287                 }
288                 port = ac_prefs->set_smtpport ? ac_prefs->smtpport : SMTP_PORT;
289 #endif
290
291                 if (ac_prefs->use_smtp_auth) {
292                         smtp_session->forced_auth_type = ac_prefs->smtp_auth_type;
293                         if (ac_prefs->smtp_userid && strlen(ac_prefs->smtp_userid)) {
294                                 smtp_session->user = g_strdup(ac_prefs->smtp_userid);
295                                 if (password_get(smtp_session->user,
296                                                         ac_prefs->smtp_server, "smtp", port,
297                                                         &(smtp_session->pass))) {
298                                         /* NOP */;
299                                 } else if (ac_prefs->smtp_passwd)
300                                         smtp_session->pass =
301                                                 g_strdup(ac_prefs->smtp_passwd);
302                                 else {
303                                         smtp_session->pass =
304                                                 input_dialog_query_password_keep
305                                                         (ac_prefs->smtp_server,
306                                                          smtp_session->user,
307                                                          &(ac_prefs->session_smtp_passwd));
308                                         if (!smtp_session->pass) {
309                                                 session_destroy(session);
310                                                 return -1;
311                                         }
312                                 }
313                         } else {
314                                 smtp_session->user = g_strdup(ac_prefs->userid);
315                                 if (password_get(smtp_session->user,
316                                                         ac_prefs->smtp_server, "smtp", port,
317                                                         &(smtp_session->pass))) {
318                                         /* NOP */;
319                                 } else if (ac_prefs->passwd)
320                                         smtp_session->pass = g_strdup(ac_prefs->passwd);
321                                 else {
322                                         smtp_session->pass =
323                                                 input_dialog_query_password_keep
324                                                         (ac_prefs->smtp_server,
325                                                          smtp_session->user,
326                                                          &(ac_prefs->session_smtp_passwd));
327                                         if (!smtp_session->pass) {
328                                                 session_destroy(session);
329                                                 return -1;
330                                         }
331                                 }
332                         }
333                 } else {
334                         smtp_session->user = NULL;
335                         smtp_session->pass = NULL;
336                 }
337
338                 send_dialog = send_progress_dialog_create();
339                 send_dialog->session = session;
340                 smtp_session->dialog = send_dialog;
341
342                 progress_dialog_list_set(send_dialog->dialog, 0, NULL, 
343                                          ac_prefs->smtp_server, 
344                                          _("Connecting"));
345
346                 if (ac_prefs->pop_before_smtp
347                     && (ac_prefs->protocol == A_APOP || ac_prefs->protocol == A_POP3)
348                     && (time(NULL) - ac_prefs->last_pop_login_time) > (60 * ac_prefs->pop_before_smtp_timeout)) {
349                         g_snprintf(buf, sizeof(buf), _("Doing POP before SMTP..."));
350                         log_message(LOG_PROTOCOL, "%s\n", buf);
351                         progress_dialog_set_label(send_dialog->dialog, buf);
352                         progress_dialog_list_set_status(send_dialog->dialog, 0, _("POP before SMTP"));
353                         GTK_EVENTS_FLUSH();
354                         inc_pop_before_smtp(ac_prefs);
355                 }
356
357                 g_snprintf(buf, sizeof(buf), _("Account '%s': Connecting to SMTP server: %s:%d..."),
358                                 ac_prefs->account_name, ac_prefs->smtp_server, port);
359                 progress_dialog_set_label(send_dialog->dialog, buf);
360                 log_message(LOG_PROTOCOL, "%s\n", buf);
361
362                 session_set_recv_message_notify(session, send_recv_message, send_dialog);
363                 session_set_send_data_progressive_notify
364                         (session, send_send_data_progressive, send_dialog);
365                 session_set_send_data_notify(session, send_send_data_finished, send_dialog);
366
367         } else {
368                 /* everything is ready to start at MAIL FROM:, just
369                  * reinit useful variables. 
370                  */
371                 session = SESSION(ac_prefs->session);
372                 ac_prefs->session = NULL;
373                 smtp_session = SMTP_SESSION(session);
374                 smtp_session->state = SMTP_HELO;
375                 send_dialog = (SendProgressDialog *)smtp_session->dialog;
376                 was_inited = TRUE;
377         }
378
379         /* This has to be initialised for every mail sent */
380         smtp_session->from = g_strdup(spec_from);
381         smtp_session->to_list = to_list;
382         smtp_session->cur_to = to_list;
383         smtp_session->send_data = (guchar *)get_outgoing_rfc2822_str(fp);
384         smtp_session->send_data_len = strlen((gchar *)smtp_session->send_data);
385
386         session_set_timeout(session,
387                             prefs_common.io_timeout_secs * 1000);
388         /* connect if necessary */
389         if (!was_inited && session_connect(session, ac_prefs->smtp_server, port) < 0) {
390                 session_destroy(session);
391                 send_progress_dialog_destroy(send_dialog);
392                 ac_prefs->session = NULL;
393                 return -1;
394         }
395
396         debug_print("send_message_smtp(): begin event loop\n");
397
398         if (was_inited) {
399                 /* as the server is quiet, start sending ourselves */
400                 smtp_from(smtp_session);
401         }
402
403         while (session_is_running(session) && send_dialog->cancelled == FALSE
404                 && SMTP_SESSION(session)->state != SMTP_MAIL_SENT_OK)
405                 gtk_main_iteration();
406
407         if (SMTP_SESSION(session)->error_val == SM_AUTHFAIL) {
408                 if (ac_prefs->session_smtp_passwd) {
409                         g_free(ac_prefs->session_smtp_passwd);
410                         ac_prefs->session_smtp_passwd = NULL;
411                 }
412                 ret = -1;
413         } else if (SMTP_SESSION(session)->state == SMTP_MAIL_SENT_OK) {
414                 log_message(LOG_PROTOCOL, "%s\n", _("Mail sent successfully."));
415                 ret = 0;
416         } else if (session->state == SESSION_EOF &&
417                    SMTP_SESSION(session)->state == SMTP_QUIT) {
418                 /* consider EOF right after QUIT successful */
419                 log_warning(LOG_PROTOCOL, "%s\n", _("Connection closed by the remote host."));
420                 ret = 0;
421         } else if (session->state == SESSION_ERROR ||
422                    session->state == SESSION_EOF ||
423                    session->state == SESSION_TIMEOUT ||
424                    SMTP_SESSION(session)->state == SMTP_ERROR ||
425                    SMTP_SESSION(session)->error_val != SM_OK)
426                 ret = -1;
427         else if (send_dialog->cancelled == TRUE)
428                 ret = -1;
429
430         if (ret == -1) {
431                 manage_window_focus_in(send_dialog->dialog->window, NULL, NULL);
432                 send_put_error(session);
433                 manage_window_focus_out(send_dialog->dialog->window, NULL, NULL);
434         }
435
436         /* if we should close the connection, let's do it.
437          * Close it in case of error, too, as it helps reinitializing things
438          * easier.
439          */
440         if (!keep_session || ret != 0) {
441                 if (session_is_connected(session))
442                         smtp_quit(smtp_session);
443                 while (session_is_connected(session) && !send_dialog->cancelled)
444                         gtk_main_iteration();
445                 session_destroy(session);
446                 ac_prefs->session = NULL;
447                 send_progress_dialog_destroy(send_dialog);
448         } else {
449                 g_free(smtp_session->from);
450                 g_free(smtp_session->send_data);
451                 g_free(smtp_session->error_msg);
452         }
453         if (keep_session && ret == 0 && ac_prefs->session == NULL)
454                 ac_prefs->session = SMTP_SESSION(session);
455
456
457         statuswindow_pop_all();
458         statusbar_verbosity_set(FALSE);
459         return ret;
460 }
461
462 gint send_message_smtp(PrefsAccount *ac_prefs, GSList *to_list, FILE *fp)
463 {
464         return send_message_smtp_full(ac_prefs, to_list, fp, FALSE);
465 }
466
467 static gint send_recv_message(Session *session, const gchar *msg, gpointer data)
468 {
469         gchar buf[BUFFSIZE];
470         SMTPSession *smtp_session = SMTP_SESSION(session);
471         SendProgressDialog *dialog = (SendProgressDialog *)data;
472         gchar *state_str = NULL;
473
474         cm_return_val_if_fail(dialog != NULL, -1);
475
476         switch (smtp_session->state) {
477         case SMTP_READY:
478         case SMTP_CONNECTED:
479                 return 0;
480         case SMTP_HELO:
481                 g_snprintf(buf, sizeof(buf), _("Sending HELO..."));
482                 state_str = _("Authenticating");
483                 statuswindow_print_all(_("Sending message..."));
484                 break;
485         case SMTP_EHLO:
486                 g_snprintf(buf, sizeof(buf), _("Sending EHLO..."));
487                 state_str = _("Authenticating");
488                 statuswindow_print_all(_("Sending message..."));
489                 break;
490         case SMTP_AUTH:
491                 g_snprintf(buf, sizeof(buf), _("Authenticating..."));
492                 state_str = _("Authenticating");
493                 break;
494         case SMTP_FROM:
495                 g_snprintf(buf, sizeof(buf), _("Sending MAIL FROM..."));
496                 state_str = _("Sending");
497                 break;
498         case SMTP_RCPT:
499                 g_snprintf(buf, sizeof(buf), _("Sending RCPT TO..."));
500                 state_str = _("Sending");
501                 break;
502         case SMTP_DATA:
503         case SMTP_EOM:
504                 g_snprintf(buf, sizeof(buf), _("Sending DATA..."));
505                 state_str = _("Sending");
506                 break;
507         case SMTP_QUIT:
508                 g_snprintf(buf, sizeof(buf), _("Quitting..."));
509                 state_str = _("Quitting");
510                 break;
511         case SMTP_ERROR:
512                 g_warning("send: error: %s\n", msg);
513                 return 0;
514         default:
515                 return 0;
516         }
517
518         progress_dialog_set_label(dialog->dialog, buf);
519         progress_dialog_list_set_status(dialog->dialog, 0, state_str);
520
521         return 0;
522 }
523
524 static gint send_send_data_progressive(Session *session, guint cur_len,
525                                        guint total_len, gpointer data)
526 {
527         gchar buf[BUFFSIZE];
528         SendProgressDialog *dialog = (SendProgressDialog *)data;
529         MainWindow *mainwin = mainwindow_get_mainwindow();
530         
531         cm_return_val_if_fail(dialog != NULL, -1);
532
533         if (SMTP_SESSION(session)->state != SMTP_SEND_DATA &&
534             SMTP_SESSION(session)->state != SMTP_EOM)
535                 return 0;
536
537         g_snprintf(buf, sizeof(buf), _("Sending message (%d / %d bytes)"),
538                    cur_len, total_len);
539         progress_dialog_set_label(dialog->dialog, buf);
540         progress_dialog_set_fraction
541                 (dialog->dialog, (total_len == 0) ? 0 : (gfloat)cur_len / (gfloat)total_len);
542
543         if (mainwin) {
544                 if (!gtk_widget_get_visible(mainwin->progressbar))      
545                         gtk_widget_show(mainwin->progressbar);
546                 gtk_progress_bar_set_fraction
547                         (GTK_PROGRESS_BAR(mainwin->progressbar),
548                          (total_len == 0) ? 0 : (gfloat)cur_len / (gfloat)total_len);
549         }
550
551         return 0;
552 }
553
554 static gint send_send_data_finished(Session *session, guint len, gpointer data)
555 {
556         SendProgressDialog *dialog = (SendProgressDialog *)data;
557         MainWindow *mainwin = mainwindow_get_mainwindow();
558
559         cm_return_val_if_fail(dialog != NULL, -1);
560
561         send_send_data_progressive(session, len, len, dialog);
562         if (mainwin) {
563                 gtk_widget_hide(mainwin->progressbar);
564                 gtk_progress_bar_set_fraction
565                         (GTK_PROGRESS_BAR(mainwin->progressbar),(gfloat)0);
566         }
567
568         return 0;
569 }
570
571 static void send_progress_dialog_size_allocate_cb(GtkWidget *widget,
572                                          GtkAllocation *allocation)
573 {
574         cm_return_if_fail(allocation != NULL);
575
576         prefs_common.sendwin_width = allocation->width;
577         prefs_common.sendwin_height = allocation->height;
578 }
579
580 static SendProgressDialog *send_progress_dialog_create(void)
581 {
582         SendProgressDialog *dialog;
583         ProgressDialog *progress;
584         static GdkGeometry geometry;
585
586         dialog = g_new0(SendProgressDialog, 1);
587
588         progress = progress_dialog_create();
589         gtk_window_set_title(GTK_WINDOW(progress->window),
590                              _("Sending message"));
591         g_signal_connect(G_OBJECT(progress->showlog_btn), "clicked",
592                          G_CALLBACK(send_showlog_button_cb), dialog);
593         g_signal_connect(G_OBJECT(progress->cancel_btn), "clicked",
594                          G_CALLBACK(send_cancel_button_cb), dialog);
595         g_signal_connect(G_OBJECT(progress->window), "delete_event",
596                          G_CALLBACK(gtk_true), NULL);
597         gtk_window_set_modal(GTK_WINDOW(progress->window), TRUE);
598         g_signal_connect(G_OBJECT(progress->window), "size_allocate",
599                          G_CALLBACK(send_progress_dialog_size_allocate_cb), NULL);
600         manage_window_set_transient(GTK_WINDOW(progress->window));
601
602         progress_dialog_get_fraction(progress);
603
604         if (!geometry.min_height) {
605                 geometry.min_width = 460;
606                 geometry.min_height = 250;
607         }
608
609         gtk_window_set_geometry_hints(GTK_WINDOW(progress->window), NULL, &geometry,
610                                       GDK_HINT_MIN_SIZE);
611         gtk_widget_set_size_request(progress->window, prefs_common.sendwin_width,
612                                     prefs_common.sendwin_height);
613
614         if (!prefs_common.send_dialog_invisible) {
615                 gtk_widget_show_now(progress->window);
616         }
617         
618         dialog->dialog = progress;
619
620         return dialog;
621 }
622
623 static void send_progress_dialog_destroy(SendProgressDialog *dialog)
624 {
625         cm_return_if_fail(dialog != NULL);
626         if (!prefs_common.send_dialog_invisible) {
627                 progress_dialog_destroy(dialog->dialog);
628         }
629         g_free(dialog);
630         send_dialog = NULL;
631 }
632
633 static void send_showlog_button_cb(GtkWidget *widget, gpointer data)
634 {
635         MainWindow *mainwin = mainwindow_get_mainwindow();
636
637         log_window_show(mainwin->logwin);
638 }
639
640 static void send_cancel_button_cb(GtkWidget *widget, gpointer data)
641 {
642         SendProgressDialog *dialog = (SendProgressDialog *)data;
643         statusbar_progress_all(0,0,0);
644
645         dialog->cancelled = TRUE;
646 }
647
648 static void send_put_error(Session *session)
649 {
650         gchar *msg;
651         gchar *log_msg = NULL;
652         gchar *err_msg = NULL;
653
654         msg = SMTP_SESSION(session)->error_msg;
655
656         switch (SMTP_SESSION(session)->error_val) {
657         case SM_ERROR:
658         case SM_UNRECOVERABLE:
659                 log_msg = _("Error occurred while sending the message.");
660                 if (msg)
661                         err_msg = g_strdup_printf
662                                 (_("Error occurred while sending the message:\n%s"),
663                                  msg);
664                 else
665                         err_msg = g_strdup(log_msg);
666                 break;
667         case SM_AUTHFAIL:
668                 log_msg = _("Authentication failed.");
669                 if (msg)
670                         err_msg = g_strdup_printf
671                                 (_("Authentication failed:\n%s"), msg);
672                 else
673                         err_msg = g_strdup(log_msg);
674                 break;
675         default:
676                 switch (session->state) {
677                 case SESSION_ERROR:
678                         log_msg =
679                                 _("Error occurred while sending the message.");
680                         err_msg = g_strdup(log_msg);
681                         break;
682                 case SESSION_EOF:
683                         log_msg = _("Connection closed by the remote host.");
684                         err_msg = g_strdup(log_msg);
685                         break;
686                 case SESSION_TIMEOUT:
687                         log_msg = _("Session timed out. You may be able to "
688                                     "recover by increasing the timeout value in "
689                                     "Preferences/Other/Miscellaneous.");
690                         err_msg = g_strdup(log_msg);
691                         break;
692                 default:
693                         break;
694                 }
695                 break;
696         }
697
698         if (err_msg) {
699                 log_error(LOG_PROTOCOL, "%s\n", err_msg);
700                 g_free(err_msg);
701         } else {
702                 if (log_msg)
703                         log_warning(LOG_PROTOCOL, "%s\n", log_msg);
704         }
705 }
706