Implement a password get hooklist, allowing plugins to
[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, FALSE, FALSE);
235         fseek(fp, fp_pos, SEEK_SET);
236         
237         if (tmp_msginfo && tmp_msginfo->from) {
238                 strncpy2(spec_from, tmp_msginfo->from, BUFFSIZE-1);
239                 extract_address(spec_from);
240         } else {
241                 strncpy2(spec_from, ac_prefs->address, BUFFSIZE-1);
242         }
243         if (tmp_msginfo) {
244                 procmsg_msginfo_free(tmp_msginfo);
245         }
246
247         if (!ac_prefs->session) {
248                 /* we can't reuse a previously initialised session */
249                 session = smtp_session_new(ac_prefs);
250                 smtp_session = SMTP_SESSION(session);
251
252                 if (ac_prefs->set_domain && ac_prefs->domain && strlen(ac_prefs->domain)) {
253                         smtp_session->hostname = g_strdup(ac_prefs->domain);
254                 } else {
255                         smtp_session->hostname = NULL;
256                 }
257
258 #ifdef USE_GNUTLS
259                 port = ac_prefs->set_smtpport ? ac_prefs->smtpport :
260                         ac_prefs->ssl_smtp == SSL_TUNNEL ? SSMTP_PORT : SMTP_PORT;
261                 session->ssl_type = ac_prefs->ssl_smtp;
262                 if (ac_prefs->ssl_smtp != SSL_NONE)
263                         session->nonblocking = ac_prefs->use_nonblocking_ssl;
264                 if (ac_prefs->set_gnutls_priority && ac_prefs->gnutls_priority &&
265                     strlen(ac_prefs->gnutls_priority))
266                         session->gnutls_priority = g_strdup(ac_prefs->gnutls_priority);
267 #else
268                 if (ac_prefs->ssl_smtp != SSL_NONE) {
269                         if (alertpanel_full(_("Insecure connection"),
270                                 _("This connection is configured to be secured "
271                                   "using SSL, but SSL is not available in this "
272                                   "build of Claws Mail. \n\n"
273                                   "Do you want to continue connecting to this "
274                                   "server? The communication would not be "
275                                   "secure."),
276                                   GTK_STOCK_CANCEL, _("Con_tinue connecting"),
277                                   NULL, FALSE, NULL, ALERT_WARNING,
278                                   G_ALERTDEFAULT) != G_ALERTALTERNATE) {
279                                 session_destroy(session);
280                                 return -1;
281                         }
282                 }
283                 port = ac_prefs->set_smtpport ? ac_prefs->smtpport : SMTP_PORT;
284 #endif
285
286                 if (ac_prefs->use_smtp_auth) {
287                         smtp_session->forced_auth_type = ac_prefs->smtp_auth_type;
288                         if (ac_prefs->smtp_userid && strlen(ac_prefs->smtp_userid)) {
289                                 smtp_session->user = g_strdup(ac_prefs->smtp_userid);
290                                 if (password_get(smtp_session->user,
291                                                         ac_prefs->smtp_server, "smtp", port,
292                                                         &(smtp_session->pass))) {
293                                         /* NOP */;
294                                 } else if (ac_prefs->smtp_passwd)
295                                         smtp_session->pass =
296                                                 g_strdup(ac_prefs->smtp_passwd);
297                                 else {
298                                         smtp_session->pass =
299                                                 input_dialog_query_password_keep
300                                                         (ac_prefs->smtp_server,
301                                                          smtp_session->user,
302                                                          &(ac_prefs->session_smtp_passwd));
303                                         if (!smtp_session->pass) {
304                                                 session_destroy(session);
305                                                 return -1;
306                                         }
307                                 }
308                         } else {
309                                 smtp_session->user = g_strdup(ac_prefs->userid);
310                                 if (password_get(smtp_session->user,
311                                                         ac_prefs->smtp_server, "smtp", port,
312                                                         &(smtp_session->pass))) {
313                                         /* NOP */;
314                                 } else if (ac_prefs->passwd)
315                                         smtp_session->pass = g_strdup(ac_prefs->passwd);
316                                 else {
317                                         smtp_session->pass =
318                                                 input_dialog_query_password_keep
319                                                         (ac_prefs->smtp_server,
320                                                          smtp_session->user,
321                                                          &(ac_prefs->session_smtp_passwd));
322                                         if (!smtp_session->pass) {
323                                                 session_destroy(session);
324                                                 return -1;
325                                         }
326                                 }
327                         }
328                 } else {
329                         smtp_session->user = NULL;
330                         smtp_session->pass = NULL;
331                 }
332
333                 send_dialog = send_progress_dialog_create();
334                 send_dialog->session = session;
335                 smtp_session->dialog = send_dialog;
336
337                 progress_dialog_list_set(send_dialog->dialog, 0, NULL, 
338                                          ac_prefs->smtp_server, 
339                                          _("Connecting"));
340
341                 if (ac_prefs->pop_before_smtp
342                     && (ac_prefs->protocol == A_APOP || ac_prefs->protocol == A_POP3)
343                     && (time(NULL) - ac_prefs->last_pop_login_time) > (60 * ac_prefs->pop_before_smtp_timeout)) {
344                         g_snprintf(buf, sizeof(buf), _("Doing POP before SMTP..."));
345                         log_message(LOG_PROTOCOL, "%s\n", buf);
346                         progress_dialog_set_label(send_dialog->dialog, buf);
347                         progress_dialog_list_set_status(send_dialog->dialog, 0, _("POP before SMTP"));
348                         GTK_EVENTS_FLUSH();
349                         inc_pop_before_smtp(ac_prefs);
350                 }
351
352                 g_snprintf(buf, sizeof(buf), _("Account '%s': Connecting to SMTP server: %s:%d..."),
353                                 ac_prefs->account_name, ac_prefs->smtp_server, port);
354                 progress_dialog_set_label(send_dialog->dialog, buf);
355                 log_message(LOG_PROTOCOL, "%s\n", buf);
356
357                 session_set_recv_message_notify(session, send_recv_message, send_dialog);
358                 session_set_send_data_progressive_notify
359                         (session, send_send_data_progressive, send_dialog);
360                 session_set_send_data_notify(session, send_send_data_finished, send_dialog);
361
362         } else {
363                 /* everything is ready to start at MAIL FROM:, just
364                  * reinit useful variables. 
365                  */
366                 session = SESSION(ac_prefs->session);
367                 ac_prefs->session = NULL;
368                 smtp_session = SMTP_SESSION(session);
369                 smtp_session->state = SMTP_HELO;
370                 send_dialog = (SendProgressDialog *)smtp_session->dialog;
371                 was_inited = TRUE;
372         }
373
374         /* This has to be initialised for every mail sent */
375         smtp_session->from = g_strdup(spec_from);
376         smtp_session->to_list = to_list;
377         smtp_session->cur_to = to_list;
378         smtp_session->send_data = (guchar *)get_outgoing_rfc2822_str(fp);
379         smtp_session->send_data_len = strlen((gchar *)smtp_session->send_data);
380
381         session_set_timeout(session,
382                             prefs_common.io_timeout_secs * 1000);
383         /* connect if necessary */
384         if (!was_inited && session_connect(session, ac_prefs->smtp_server, port) < 0) {
385                 session_destroy(session);
386                 send_progress_dialog_destroy(send_dialog);
387                 ac_prefs->session = NULL;
388                 return -1;
389         }
390
391         debug_print("send_message_smtp(): begin event loop\n");
392
393         if (was_inited) {
394                 /* as the server is quiet, start sending ourselves */
395                 smtp_from(smtp_session);
396         }
397
398         while (session_is_running(session) && send_dialog->cancelled == FALSE
399                 && SMTP_SESSION(session)->state != SMTP_MAIL_SENT_OK)
400                 gtk_main_iteration();
401
402         if (SMTP_SESSION(session)->error_val == SM_AUTHFAIL) {
403                 if (ac_prefs->session_smtp_passwd) {
404                         g_free(ac_prefs->session_smtp_passwd);
405                         ac_prefs->session_smtp_passwd = NULL;
406                 }
407                 ret = -1;
408         } else if (SMTP_SESSION(session)->state == SMTP_MAIL_SENT_OK) {
409                 log_message(LOG_PROTOCOL, "%s\n", _("Mail sent successfully."));
410                 ret = 0;
411         } else if (session->state == SESSION_EOF &&
412                    SMTP_SESSION(session)->state == SMTP_QUIT) {
413                 /* consider EOF right after QUIT successful */
414                 log_warning(LOG_PROTOCOL, "%s\n", _("Connection closed by the remote host."));
415                 ret = 0;
416         } else if (session->state == SESSION_ERROR ||
417                    session->state == SESSION_EOF ||
418                    session->state == SESSION_TIMEOUT ||
419                    SMTP_SESSION(session)->state == SMTP_ERROR ||
420                    SMTP_SESSION(session)->error_val != SM_OK)
421                 ret = -1;
422         else if (send_dialog->cancelled == TRUE)
423                 ret = -1;
424
425         if (ret == -1) {
426                 manage_window_focus_in(send_dialog->dialog->window, NULL, NULL);
427                 send_put_error(session);
428                 manage_window_focus_out(send_dialog->dialog->window, NULL, NULL);
429         }
430
431         /* if we should close the connection, let's do it.
432          * Close it in case of error, too, as it helps reinitializing things
433          * easier.
434          */
435         if (!keep_session || ret != 0) {
436                 if (session_is_connected(session))
437                         smtp_quit(smtp_session);
438                 while (session_is_connected(session) && !send_dialog->cancelled)
439                         gtk_main_iteration();
440                 session_destroy(session);
441                 ac_prefs->session = NULL;
442                 send_progress_dialog_destroy(send_dialog);
443         } else {
444                 g_free(smtp_session->from);
445                 g_free(smtp_session->send_data);
446                 g_free(smtp_session->error_msg);
447         }
448         if (keep_session && ret == 0 && ac_prefs->session == NULL)
449                 ac_prefs->session = SMTP_SESSION(session);
450
451
452         statuswindow_pop_all();
453         statusbar_verbosity_set(FALSE);
454         return ret;
455 }
456
457 gint send_message_smtp(PrefsAccount *ac_prefs, GSList *to_list, FILE *fp)
458 {
459         return send_message_smtp_full(ac_prefs, to_list, fp, FALSE);
460 }
461
462 static gint send_recv_message(Session *session, const gchar *msg, gpointer data)
463 {
464         gchar buf[BUFFSIZE];
465         SMTPSession *smtp_session = SMTP_SESSION(session);
466         SendProgressDialog *dialog = (SendProgressDialog *)data;
467         gchar *state_str = NULL;
468
469         cm_return_val_if_fail(dialog != NULL, -1);
470
471         switch (smtp_session->state) {
472         case SMTP_READY:
473         case SMTP_CONNECTED:
474                 return 0;
475         case SMTP_HELO:
476                 g_snprintf(buf, sizeof(buf), _("Sending HELO..."));
477                 state_str = _("Authenticating");
478                 statuswindow_print_all(_("Sending message..."));
479                 break;
480         case SMTP_EHLO:
481                 g_snprintf(buf, sizeof(buf), _("Sending EHLO..."));
482                 state_str = _("Authenticating");
483                 statuswindow_print_all(_("Sending message..."));
484                 break;
485         case SMTP_AUTH:
486                 g_snprintf(buf, sizeof(buf), _("Authenticating..."));
487                 state_str = _("Authenticating");
488                 break;
489         case SMTP_FROM:
490                 g_snprintf(buf, sizeof(buf), _("Sending MAIL FROM..."));
491                 state_str = _("Sending");
492                 break;
493         case SMTP_RCPT:
494                 g_snprintf(buf, sizeof(buf), _("Sending RCPT TO..."));
495                 state_str = _("Sending");
496                 break;
497         case SMTP_DATA:
498         case SMTP_EOM:
499                 g_snprintf(buf, sizeof(buf), _("Sending DATA..."));
500                 state_str = _("Sending");
501                 break;
502         case SMTP_QUIT:
503                 g_snprintf(buf, sizeof(buf), _("Quitting..."));
504                 state_str = _("Quitting");
505                 break;
506         case SMTP_ERROR:
507                 g_warning("send: error: %s\n", msg);
508                 return 0;
509         default:
510                 return 0;
511         }
512
513         progress_dialog_set_label(dialog->dialog, buf);
514         progress_dialog_list_set_status(dialog->dialog, 0, state_str);
515
516         return 0;
517 }
518
519 static gint send_send_data_progressive(Session *session, guint cur_len,
520                                        guint total_len, gpointer data)
521 {
522         gchar buf[BUFFSIZE];
523         SendProgressDialog *dialog = (SendProgressDialog *)data;
524         MainWindow *mainwin = mainwindow_get_mainwindow();
525         
526         cm_return_val_if_fail(dialog != NULL, -1);
527
528         if (SMTP_SESSION(session)->state != SMTP_SEND_DATA &&
529             SMTP_SESSION(session)->state != SMTP_EOM)
530                 return 0;
531
532         g_snprintf(buf, sizeof(buf), _("Sending message (%d / %d bytes)"),
533                    cur_len, total_len);
534         progress_dialog_set_label(dialog->dialog, buf);
535         progress_dialog_set_fraction
536                 (dialog->dialog, (total_len == 0) ? 0 : (gfloat)cur_len / (gfloat)total_len);
537
538         if (mainwin) {
539                 if (!gtk_widget_get_visible(mainwin->progressbar))      
540                         gtk_widget_show(mainwin->progressbar);
541                 gtk_progress_bar_set_fraction
542                         (GTK_PROGRESS_BAR(mainwin->progressbar),
543                          (total_len == 0) ? 0 : (gfloat)cur_len / (gfloat)total_len);
544         }
545
546         return 0;
547 }
548
549 static gint send_send_data_finished(Session *session, guint len, gpointer data)
550 {
551         SendProgressDialog *dialog = (SendProgressDialog *)data;
552         MainWindow *mainwin = mainwindow_get_mainwindow();
553
554         cm_return_val_if_fail(dialog != NULL, -1);
555
556         send_send_data_progressive(session, len, len, dialog);
557         if (mainwin) {
558                 gtk_widget_hide(mainwin->progressbar);
559                 gtk_progress_bar_set_fraction
560                         (GTK_PROGRESS_BAR(mainwin->progressbar),(gfloat)0);
561         }
562
563         return 0;
564 }
565
566 static void send_progress_dialog_size_allocate_cb(GtkWidget *widget,
567                                          GtkAllocation *allocation)
568 {
569         cm_return_if_fail(allocation != NULL);
570
571         prefs_common.sendwin_width = allocation->width;
572         prefs_common.sendwin_height = allocation->height;
573 }
574
575 static SendProgressDialog *send_progress_dialog_create(void)
576 {
577         SendProgressDialog *dialog;
578         ProgressDialog *progress;
579         static GdkGeometry geometry;
580
581         dialog = g_new0(SendProgressDialog, 1);
582
583         progress = progress_dialog_create();
584         gtk_window_set_title(GTK_WINDOW(progress->window),
585                              _("Sending message"));
586         g_signal_connect(G_OBJECT(progress->showlog_btn), "clicked",
587                          G_CALLBACK(send_showlog_button_cb), dialog);
588         g_signal_connect(G_OBJECT(progress->cancel_btn), "clicked",
589                          G_CALLBACK(send_cancel_button_cb), dialog);
590         g_signal_connect(G_OBJECT(progress->window), "delete_event",
591                          G_CALLBACK(gtk_true), NULL);
592         gtk_window_set_modal(GTK_WINDOW(progress->window), TRUE);
593         g_signal_connect(G_OBJECT(progress->window), "size_allocate",
594                          G_CALLBACK(send_progress_dialog_size_allocate_cb), NULL);
595         manage_window_set_transient(GTK_WINDOW(progress->window));
596
597         progress_dialog_get_fraction(progress);
598
599         if (!geometry.min_height) {
600                 geometry.min_width = 460;
601                 geometry.min_height = 250;
602         }
603
604         gtk_window_set_geometry_hints(GTK_WINDOW(progress->window), NULL, &geometry,
605                                       GDK_HINT_MIN_SIZE);
606         gtk_widget_set_size_request(progress->window, prefs_common.sendwin_width,
607                                     prefs_common.sendwin_height);
608
609         if (!prefs_common.send_dialog_invisible) {
610                 gtk_widget_show_now(progress->window);
611         }
612         
613         dialog->dialog = progress;
614
615         return dialog;
616 }
617
618 static void send_progress_dialog_destroy(SendProgressDialog *dialog)
619 {
620         cm_return_if_fail(dialog != NULL);
621         if (!prefs_common.send_dialog_invisible) {
622                 progress_dialog_destroy(dialog->dialog);
623         }
624         g_free(dialog);
625         send_dialog = NULL;
626 }
627
628 static void send_showlog_button_cb(GtkWidget *widget, gpointer data)
629 {
630         MainWindow *mainwin = mainwindow_get_mainwindow();
631
632         log_window_show(mainwin->logwin);
633 }
634
635 static void send_cancel_button_cb(GtkWidget *widget, gpointer data)
636 {
637         SendProgressDialog *dialog = (SendProgressDialog *)data;
638         statusbar_progress_all(0,0,0);
639
640         dialog->cancelled = TRUE;
641 }
642
643 static void send_put_error(Session *session)
644 {
645         gchar *msg;
646         gchar *log_msg = NULL;
647         gchar *err_msg = NULL;
648
649         msg = SMTP_SESSION(session)->error_msg;
650
651         switch (SMTP_SESSION(session)->error_val) {
652         case SM_ERROR:
653         case SM_UNRECOVERABLE:
654                 log_msg = _("Error occurred while sending the message.");
655                 if (msg)
656                         err_msg = g_strdup_printf
657                                 (_("Error occurred while sending the message:\n%s"),
658                                  msg);
659                 else
660                         err_msg = g_strdup(log_msg);
661                 break;
662         case SM_AUTHFAIL:
663                 log_msg = _("Authentication failed.");
664                 if (msg)
665                         err_msg = g_strdup_printf
666                                 (_("Authentication failed:\n%s"), msg);
667                 else
668                         err_msg = g_strdup(log_msg);
669                 break;
670         default:
671                 switch (session->state) {
672                 case SESSION_ERROR:
673                         log_msg =
674                                 _("Error occurred while sending the message.");
675                         err_msg = g_strdup(log_msg);
676                         break;
677                 case SESSION_EOF:
678                         log_msg = _("Connection closed by the remote host.");
679                         err_msg = g_strdup(log_msg);
680                         break;
681                 case SESSION_TIMEOUT:
682                         log_msg = _("Session timed out. You may be able to "
683                                     "recover by increasing the timeout value in "
684                                     "Preferences/Other/Miscellaneous.");
685                         err_msg = g_strdup(log_msg);
686                         break;
687                 default:
688                         break;
689                 }
690                 break;
691         }
692
693         if (err_msg) {
694                 log_error(LOG_PROTOCOL, "%s\n", err_msg);
695                 g_free(err_msg);
696         } else {
697                 if (log_msg)
698                         log_warning(LOG_PROTOCOL, "%s\n", log_msg);
699         }
700 }
701