2012-11-30 [wwp] 3.9.0cvs31
[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                 if (ac_prefs->use_smtp_auth) {
259                         smtp_session->forced_auth_type = ac_prefs->smtp_auth_type;
260                         if (ac_prefs->smtp_userid && strlen(ac_prefs->smtp_userid)) {
261                                 smtp_session->user = g_strdup(ac_prefs->smtp_userid);
262                                 if (ac_prefs->smtp_passwd)
263                                         smtp_session->pass =
264                                                 g_strdup(ac_prefs->smtp_passwd);
265                                 else {
266                                         smtp_session->pass =
267                                                 input_dialog_query_password_keep
268                                                         (ac_prefs->smtp_server,
269                                                          smtp_session->user,
270                                                          &(ac_prefs->session_smtp_passwd));
271                                         if (!smtp_session->pass) {
272                                                 session_destroy(session);
273                                                 return -1;
274                                         }
275                                 }
276                         } else {
277                                 smtp_session->user = g_strdup(ac_prefs->userid);
278                                 if (ac_prefs->passwd)
279                                         smtp_session->pass = g_strdup(ac_prefs->passwd);
280                                 else {
281                                         smtp_session->pass =
282                                                 input_dialog_query_password_keep
283                                                         (ac_prefs->smtp_server,
284                                                          smtp_session->user,
285                                                          &(ac_prefs->session_smtp_passwd));
286                                         if (!smtp_session->pass) {
287                                                 session_destroy(session);
288                                                 return -1;
289                                         }
290                                 }
291                         }
292                 } else {
293                         smtp_session->user = NULL;
294                         smtp_session->pass = NULL;
295                 }
296
297 #ifdef USE_GNUTLS
298                 port = ac_prefs->set_smtpport ? ac_prefs->smtpport :
299                         ac_prefs->ssl_smtp == SSL_TUNNEL ? SSMTP_PORT : SMTP_PORT;
300                 session->ssl_type = ac_prefs->ssl_smtp;
301                 if (ac_prefs->ssl_smtp != SSL_NONE)
302                         session->nonblocking = ac_prefs->use_nonblocking_ssl;
303 #else
304                 if (ac_prefs->ssl_smtp != SSL_NONE) {
305                         if (alertpanel_full(_("Insecure connection"),
306                                 _("This connection is configured to be secured "
307                                   "using SSL, but SSL is not available in this "
308                                   "build of Claws Mail. \n\n"
309                                   "Do you want to continue connecting to this "
310                                   "server? The communication would not be "
311                                   "secure."),
312                                   GTK_STOCK_CANCEL, _("Con_tinue connecting"),
313                                   NULL, FALSE, NULL, ALERT_WARNING,
314                                   G_ALERTDEFAULT) != G_ALERTALTERNATE) {
315                                 session_destroy(session);
316                                 return -1;
317                         }
318                 }
319                 port = ac_prefs->set_smtpport ? ac_prefs->smtpport : SMTP_PORT;
320 #endif
321
322                 send_dialog = send_progress_dialog_create();
323                 send_dialog->session = session;
324                 smtp_session->dialog = send_dialog;
325
326                 progress_dialog_list_set(send_dialog->dialog, 0, NULL, 
327                                          ac_prefs->smtp_server, 
328                                          _("Connecting"));
329
330                 if (ac_prefs->pop_before_smtp
331                     && (ac_prefs->protocol == A_APOP || ac_prefs->protocol == A_POP3)
332                     && (time(NULL) - ac_prefs->last_pop_login_time) > (60 * ac_prefs->pop_before_smtp_timeout)) {
333                         g_snprintf(buf, sizeof(buf), _("Doing POP before SMTP..."));
334                         log_message(LOG_PROTOCOL, "%s\n", buf);
335                         progress_dialog_set_label(send_dialog->dialog, buf);
336                         progress_dialog_list_set_status(send_dialog->dialog, 0, _("POP before SMTP"));
337                         GTK_EVENTS_FLUSH();
338                         inc_pop_before_smtp(ac_prefs);
339                 }
340
341                 g_snprintf(buf, sizeof(buf), _("Account '%s': Connecting to SMTP server: %s:%d..."),
342                                 ac_prefs->account_name, ac_prefs->smtp_server, port);
343                 progress_dialog_set_label(send_dialog->dialog, buf);
344                 log_message(LOG_PROTOCOL, "%s\n", buf);
345
346                 session_set_recv_message_notify(session, send_recv_message, send_dialog);
347                 session_set_send_data_progressive_notify
348                         (session, send_send_data_progressive, send_dialog);
349                 session_set_send_data_notify(session, send_send_data_finished, send_dialog);
350
351         } else {
352                 /* everything is ready to start at MAIL FROM:, just
353                  * reinit useful variables. 
354                  */
355                 session = SESSION(ac_prefs->session);
356                 ac_prefs->session = NULL;
357                 smtp_session = SMTP_SESSION(session);
358                 smtp_session->state = SMTP_HELO;
359                 send_dialog = (SendProgressDialog *)smtp_session->dialog;
360                 was_inited = TRUE;
361         }
362
363         /* This has to be initialised for every mail sent */
364         smtp_session->from = g_strdup(spec_from);
365         smtp_session->to_list = to_list;
366         smtp_session->cur_to = to_list;
367         smtp_session->send_data = (guchar *)get_outgoing_rfc2822_str(fp);
368         smtp_session->send_data_len = strlen((gchar *)smtp_session->send_data);
369
370         session_set_timeout(session,
371                             prefs_common.io_timeout_secs * 1000);
372         /* connect if necessary */
373         if (!was_inited && session_connect(session, ac_prefs->smtp_server, port) < 0) {
374                 session_destroy(session);
375                 send_progress_dialog_destroy(send_dialog);
376                 ac_prefs->session = NULL;
377                 return -1;
378         }
379
380         debug_print("send_message_smtp(): begin event loop\n");
381
382         if (was_inited) {
383                 /* as the server is quiet, start sending ourselves */
384                 smtp_from(smtp_session);
385         }
386
387         while (session_is_running(session) && send_dialog->cancelled == FALSE
388                 && SMTP_SESSION(session)->state != SMTP_MAIL_SENT_OK)
389                 gtk_main_iteration();
390
391         if (SMTP_SESSION(session)->error_val == SM_AUTHFAIL) {
392                 if (ac_prefs->session_smtp_passwd) {
393                         g_free(ac_prefs->session_smtp_passwd);
394                         ac_prefs->session_smtp_passwd = NULL;
395                 }
396                 ret = -1;
397         } else if (SMTP_SESSION(session)->state == SMTP_MAIL_SENT_OK) {
398                 log_message(LOG_PROTOCOL, "%s\n", _("Mail sent successfully."));
399                 ret = 0;
400         } else if (session->state == SESSION_EOF &&
401                    SMTP_SESSION(session)->state == SMTP_QUIT) {
402                 /* consider EOF right after QUIT successful */
403                 log_warning(LOG_PROTOCOL, "%s\n", _("Connection closed by the remote host."));
404                 ret = 0;
405         } else if (session->state == SESSION_ERROR ||
406                    session->state == SESSION_EOF ||
407                    session->state == SESSION_TIMEOUT ||
408                    SMTP_SESSION(session)->state == SMTP_ERROR ||
409                    SMTP_SESSION(session)->error_val != SM_OK)
410                 ret = -1;
411         else if (send_dialog->cancelled == TRUE)
412                 ret = -1;
413
414         if (ret == -1) {
415                 manage_window_focus_in(send_dialog->dialog->window, NULL, NULL);
416                 send_put_error(session);
417                 manage_window_focus_out(send_dialog->dialog->window, NULL, NULL);
418         }
419
420         /* if we should close the connection, let's do it.
421          * Close it in case of error, too, as it helps reinitializing things
422          * easier.
423          */
424         if (!keep_session || ret != 0) {
425                 if (session_is_connected(session))
426                         smtp_quit(smtp_session);
427                 while (session_is_connected(session) && !send_dialog->cancelled)
428                         gtk_main_iteration();
429                 session_destroy(session);
430                 ac_prefs->session = NULL;
431                 send_progress_dialog_destroy(send_dialog);
432         } else {
433                 g_free(smtp_session->from);
434                 g_free(smtp_session->send_data);
435                 g_free(smtp_session->error_msg);
436         }
437         if (keep_session && ret == 0 && ac_prefs->session == NULL)
438                 ac_prefs->session = SMTP_SESSION(session);
439
440
441         statuswindow_pop_all();
442         statusbar_verbosity_set(FALSE);
443         return ret;
444 }
445
446 gint send_message_smtp(PrefsAccount *ac_prefs, GSList *to_list, FILE *fp)
447 {
448         return send_message_smtp_full(ac_prefs, to_list, fp, FALSE);
449 }
450
451 static gint send_recv_message(Session *session, const gchar *msg, gpointer data)
452 {
453         gchar buf[BUFFSIZE];
454         SMTPSession *smtp_session = SMTP_SESSION(session);
455         SendProgressDialog *dialog = (SendProgressDialog *)data;
456         gchar *state_str = NULL;
457
458         cm_return_val_if_fail(dialog != NULL, -1);
459
460         switch (smtp_session->state) {
461         case SMTP_READY:
462         case SMTP_CONNECTED:
463                 return 0;
464         case SMTP_HELO:
465                 g_snprintf(buf, sizeof(buf), _("Sending HELO..."));
466                 state_str = _("Authenticating");
467                 statuswindow_print_all(_("Sending message..."));
468                 break;
469         case SMTP_EHLO:
470                 g_snprintf(buf, sizeof(buf), _("Sending EHLO..."));
471                 state_str = _("Authenticating");
472                 statuswindow_print_all(_("Sending message..."));
473                 break;
474         case SMTP_AUTH:
475                 g_snprintf(buf, sizeof(buf), _("Authenticating..."));
476                 state_str = _("Authenticating");
477                 break;
478         case SMTP_FROM:
479                 g_snprintf(buf, sizeof(buf), _("Sending MAIL FROM..."));
480                 state_str = _("Sending");
481                 break;
482         case SMTP_RCPT:
483                 g_snprintf(buf, sizeof(buf), _("Sending RCPT TO..."));
484                 state_str = _("Sending");
485                 break;
486         case SMTP_DATA:
487         case SMTP_EOM:
488                 g_snprintf(buf, sizeof(buf), _("Sending DATA..."));
489                 state_str = _("Sending");
490                 break;
491         case SMTP_QUIT:
492                 g_snprintf(buf, sizeof(buf), _("Quitting..."));
493                 state_str = _("Quitting");
494                 break;
495         case SMTP_ERROR:
496                 g_warning("send: error: %s\n", msg);
497                 return 0;
498         default:
499                 return 0;
500         }
501
502         progress_dialog_set_label(dialog->dialog, buf);
503         progress_dialog_list_set_status(dialog->dialog, 0, state_str);
504
505         return 0;
506 }
507
508 static gint send_send_data_progressive(Session *session, guint cur_len,
509                                        guint total_len, gpointer data)
510 {
511         gchar buf[BUFFSIZE];
512         SendProgressDialog *dialog = (SendProgressDialog *)data;
513         MainWindow *mainwin = mainwindow_get_mainwindow();
514         
515         cm_return_val_if_fail(dialog != NULL, -1);
516
517         if (SMTP_SESSION(session)->state != SMTP_SEND_DATA &&
518             SMTP_SESSION(session)->state != SMTP_EOM)
519                 return 0;
520
521         g_snprintf(buf, sizeof(buf), _("Sending message (%d / %d bytes)"),
522                    cur_len, total_len);
523         progress_dialog_set_label(dialog->dialog, buf);
524         progress_dialog_set_fraction
525                 (dialog->dialog, (total_len == 0) ? 0 : (gfloat)cur_len / (gfloat)total_len);
526
527         if (mainwin) {
528                 if (!gtk_widget_get_visible(mainwin->progressbar))      
529                         gtk_widget_show(mainwin->progressbar);
530                 gtk_progress_bar_set_fraction
531                         (GTK_PROGRESS_BAR(mainwin->progressbar),
532                          (total_len == 0) ? 0 : (gfloat)cur_len / (gfloat)total_len);
533         }
534
535         return 0;
536 }
537
538 static gint send_send_data_finished(Session *session, guint len, gpointer data)
539 {
540         SendProgressDialog *dialog = (SendProgressDialog *)data;
541         MainWindow *mainwin = mainwindow_get_mainwindow();
542
543         cm_return_val_if_fail(dialog != NULL, -1);
544
545         send_send_data_progressive(session, len, len, dialog);
546         if (mainwin) {
547                 gtk_widget_hide(mainwin->progressbar);
548                 gtk_progress_bar_set_fraction
549                         (GTK_PROGRESS_BAR(mainwin->progressbar),(gfloat)0);
550         }
551
552         return 0;
553 }
554
555 static void send_progress_dialog_size_allocate_cb(GtkWidget *widget,
556                                          GtkAllocation *allocation)
557 {
558         cm_return_if_fail(allocation != NULL);
559
560         prefs_common.sendwin_width = allocation->width;
561         prefs_common.sendwin_height = allocation->height;
562 }
563
564 static SendProgressDialog *send_progress_dialog_create(void)
565 {
566         SendProgressDialog *dialog;
567         ProgressDialog *progress;
568         static GdkGeometry geometry;
569
570         dialog = g_new0(SendProgressDialog, 1);
571
572         progress = progress_dialog_create();
573         gtk_window_set_title(GTK_WINDOW(progress->window),
574                              _("Sending message"));
575         g_signal_connect(G_OBJECT(progress->showlog_btn), "clicked",
576                          G_CALLBACK(send_showlog_button_cb), dialog);
577         g_signal_connect(G_OBJECT(progress->cancel_btn), "clicked",
578                          G_CALLBACK(send_cancel_button_cb), dialog);
579         g_signal_connect(G_OBJECT(progress->window), "delete_event",
580                          G_CALLBACK(gtk_true), NULL);
581         gtk_window_set_modal(GTK_WINDOW(progress->window), TRUE);
582         g_signal_connect(G_OBJECT(progress->window), "size_allocate",
583                          G_CALLBACK(send_progress_dialog_size_allocate_cb), NULL);
584         manage_window_set_transient(GTK_WINDOW(progress->window));
585
586         progress_dialog_get_fraction(progress);
587
588         if (!geometry.min_height) {
589                 geometry.min_width = 460;
590                 geometry.min_height = 250;
591         }
592
593         gtk_window_set_geometry_hints(GTK_WINDOW(progress->window), NULL, &geometry,
594                                       GDK_HINT_MIN_SIZE);
595         gtk_widget_set_size_request(progress->window, prefs_common.sendwin_width,
596                                     prefs_common.sendwin_height);
597
598         if (!prefs_common.send_dialog_invisible) {
599                 gtk_widget_show_now(progress->window);
600         }
601         
602         dialog->dialog = progress;
603
604         return dialog;
605 }
606
607 static void send_progress_dialog_destroy(SendProgressDialog *dialog)
608 {
609         cm_return_if_fail(dialog != NULL);
610         if (!prefs_common.send_dialog_invisible) {
611                 progress_dialog_destroy(dialog->dialog);
612         }
613         g_free(dialog);
614         send_dialog = NULL;
615 }
616
617 static void send_showlog_button_cb(GtkWidget *widget, gpointer data)
618 {
619         MainWindow *mainwin = mainwindow_get_mainwindow();
620
621         log_window_show(mainwin->logwin);
622 }
623
624 static void send_cancel_button_cb(GtkWidget *widget, gpointer data)
625 {
626         SendProgressDialog *dialog = (SendProgressDialog *)data;
627         statusbar_progress_all(0,0,0);
628
629         dialog->cancelled = TRUE;
630 }
631
632 static void send_put_error(Session *session)
633 {
634         gchar *msg;
635         gchar *log_msg = NULL;
636         gchar *err_msg = NULL;
637
638         msg = SMTP_SESSION(session)->error_msg;
639
640         switch (SMTP_SESSION(session)->error_val) {
641         case SM_ERROR:
642         case SM_UNRECOVERABLE:
643                 log_msg = _("Error occurred while sending the message.");
644                 if (msg)
645                         err_msg = g_strdup_printf
646                                 (_("Error occurred while sending the message:\n%s"),
647                                  msg);
648                 else
649                         err_msg = g_strdup(log_msg);
650                 break;
651         case SM_AUTHFAIL:
652                 log_msg = _("Authentication failed.");
653                 if (msg)
654                         err_msg = g_strdup_printf
655                                 (_("Authentication failed:\n%s"), msg);
656                 else
657                         err_msg = g_strdup(log_msg);
658                 break;
659         default:
660                 switch (session->state) {
661                 case SESSION_ERROR:
662                         log_msg =
663                                 _("Error occurred while sending the message.");
664                         err_msg = g_strdup(log_msg);
665                         break;
666                 case SESSION_EOF:
667                         log_msg = _("Connection closed by the remote host.");
668                         err_msg = g_strdup(log_msg);
669                         break;
670                 case SESSION_TIMEOUT:
671                         log_msg = _("Session timed out. You may be able to "
672                                     "recover by increasing the timeout value in "
673                                     "Preferences/Other/Miscellaneous.");
674                         err_msg = g_strdup(log_msg);
675                         break;
676                 default:
677                         break;
678                 }
679                 break;
680         }
681
682         if (err_msg) {
683                 log_error(LOG_PROTOCOL, "%s\n", err_msg);
684                 g_free(err_msg);
685         } else {
686                 if (log_msg)
687                         log_warning(LOG_PROTOCOL, "%s\n", log_msg);
688         }
689 }
690