Make procmsg_msginfo_free() zero out pointers to freed memory.
[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         if (fp_pos < 0) {
235                 perror("ftell");
236                 return -1;
237         }
238         tmp_msginfo = procheader_parse_stream(fp, flags, TRUE, FALSE);
239         if (fseek(fp, fp_pos, SEEK_SET) < 0) {
240                 perror("fseek");
241                 return -1;
242         }
243
244         if (tmp_msginfo && tmp_msginfo->extradata && tmp_msginfo->extradata->resent_from) {
245                 strncpy2(spec_from, tmp_msginfo->extradata->resent_from, BUFFSIZE-1);
246                 extract_address(spec_from);
247         } else if (tmp_msginfo && tmp_msginfo->from) {
248                 strncpy2(spec_from, tmp_msginfo->from, BUFFSIZE-1);
249                 extract_address(spec_from);
250         } else {
251                 strncpy2(spec_from, ac_prefs->address, BUFFSIZE-1);
252         }
253         if (tmp_msginfo) {
254                 procmsg_msginfo_free(&tmp_msginfo);
255         }
256
257         if (!ac_prefs->session) {
258                 /* we can't reuse a previously initialised session */
259                 session = smtp_session_new(ac_prefs);
260                 session->ssl_cert_auto_accept = ac_prefs->ssl_certs_auto_accept;
261
262                 smtp_session = SMTP_SESSION(session);
263
264                 if (ac_prefs->set_domain && ac_prefs->domain && strlen(ac_prefs->domain)) {
265                         smtp_session->hostname = g_strdup(ac_prefs->domain);
266                 } else {
267                         smtp_session->hostname = NULL;
268                 }
269
270 #ifdef USE_GNUTLS
271                 port = ac_prefs->set_smtpport ? ac_prefs->smtpport :
272                         ac_prefs->ssl_smtp == SSL_TUNNEL ? SSMTP_PORT : SMTP_PORT;
273                 session->ssl_type = ac_prefs->ssl_smtp;
274                 if (ac_prefs->ssl_smtp != SSL_NONE)
275                         session->nonblocking = ac_prefs->use_nonblocking_ssl;
276                 if (ac_prefs->set_gnutls_priority && ac_prefs->gnutls_priority &&
277                     strlen(ac_prefs->gnutls_priority))
278                         session->gnutls_priority = g_strdup(ac_prefs->gnutls_priority);
279 #else
280                 if (ac_prefs->ssl_smtp != SSL_NONE) {
281                         if (alertpanel_full(_("Insecure connection"),
282                                 _("This connection is configured to be secured "
283                                   "using SSL, but SSL is not available in this "
284                                   "build of Claws Mail. \n\n"
285                                   "Do you want to continue connecting to this "
286                                   "server? The communication would not be "
287                                   "secure."),
288                                   GTK_STOCK_CANCEL, _("Con_tinue connecting"),
289                                   NULL, FALSE, NULL, ALERT_WARNING,
290                                   G_ALERTDEFAULT) != G_ALERTALTERNATE) {
291                                 session_destroy(session);
292                                 return -1;
293                         }
294                 }
295                 port = ac_prefs->set_smtpport ? ac_prefs->smtpport : SMTP_PORT;
296 #endif
297
298                 if (ac_prefs->use_smtp_auth) {
299                         smtp_session->forced_auth_type = ac_prefs->smtp_auth_type;
300                         if (ac_prefs->smtp_userid && strlen(ac_prefs->smtp_userid)) {
301                                 smtp_session->user = g_strdup(ac_prefs->smtp_userid);
302                                 if (password_get(smtp_session->user,
303                                                         ac_prefs->smtp_server, "smtp", port,
304                                                         &(smtp_session->pass))) {
305                                         /* NOP */;
306                                 } else if (ac_prefs->smtp_passwd)
307                                         smtp_session->pass =
308                                                 g_strdup(ac_prefs->smtp_passwd);
309                                 else {
310                                         smtp_session->pass =
311                                                 input_dialog_query_password_keep
312                                                         (ac_prefs->smtp_server,
313                                                          smtp_session->user,
314                                                          &(ac_prefs->session_smtp_passwd));
315                                         if (!smtp_session->pass) {
316                                                 session_destroy(session);
317                                                 return -1;
318                                         }
319                                 }
320                         } else {
321                                 smtp_session->user = g_strdup(ac_prefs->userid);
322                                 if (password_get(smtp_session->user,
323                                                         ac_prefs->smtp_server, "smtp", port,
324                                                         &(smtp_session->pass))) {
325                                         /* NOP */;
326                                 } else if (ac_prefs->passwd)
327                                         smtp_session->pass = g_strdup(ac_prefs->passwd);
328                                 else {
329                                         smtp_session->pass =
330                                                 input_dialog_query_password_keep
331                                                         (ac_prefs->smtp_server,
332                                                          smtp_session->user,
333                                                          &(ac_prefs->session_smtp_passwd));
334                                         if (!smtp_session->pass) {
335                                                 session_destroy(session);
336                                                 return -1;
337                                         }
338                                 }
339                         }
340                 } else {
341                         smtp_session->user = NULL;
342                         smtp_session->pass = NULL;
343                 }
344
345                 send_dialog = send_progress_dialog_create();
346                 send_dialog->session = session;
347                 smtp_session->dialog = send_dialog;
348
349                 progress_dialog_list_set(send_dialog->dialog, 0, NULL, 
350                                          ac_prefs->smtp_server, 
351                                          _("Connecting"));
352
353                 if (ac_prefs->pop_before_smtp
354                     && (ac_prefs->protocol == A_APOP || ac_prefs->protocol == A_POP3)
355                     && (time(NULL) - ac_prefs->last_pop_login_time) > (60 * ac_prefs->pop_before_smtp_timeout)) {
356                         g_snprintf(buf, sizeof(buf), _("Doing POP before SMTP..."));
357                         log_message(LOG_PROTOCOL, "%s\n", buf);
358                         progress_dialog_set_label(send_dialog->dialog, buf);
359                         progress_dialog_list_set_status(send_dialog->dialog, 0, _("POP before SMTP"));
360                         GTK_EVENTS_FLUSH();
361                         inc_pop_before_smtp(ac_prefs);
362                 }
363
364                 g_snprintf(buf, sizeof(buf), _("Account '%s': Connecting to SMTP server: %s:%d..."),
365                                 ac_prefs->account_name, ac_prefs->smtp_server, port);
366                 progress_dialog_set_label(send_dialog->dialog, buf);
367                 log_message(LOG_PROTOCOL, "%s\n", buf);
368
369                 session_set_recv_message_notify(session, send_recv_message, send_dialog);
370                 session_set_send_data_progressive_notify
371                         (session, send_send_data_progressive, send_dialog);
372                 session_set_send_data_notify(session, send_send_data_finished, send_dialog);
373
374         } else {
375                 /* everything is ready to start at MAIL FROM:, just
376                  * reinit useful variables. 
377                  */
378                 session = SESSION(ac_prefs->session);
379                 ac_prefs->session = NULL;
380                 smtp_session = SMTP_SESSION(session);
381                 smtp_session->state = SMTP_HELO;
382                 send_dialog = (SendProgressDialog *)smtp_session->dialog;
383                 was_inited = TRUE;
384         }
385
386         /* This has to be initialised for every mail sent */
387         smtp_session->from = g_strdup(spec_from);
388         smtp_session->to_list = to_list;
389         smtp_session->cur_to = to_list;
390         smtp_session->send_data = (guchar *)get_outgoing_rfc2822_str(fp);
391         smtp_session->send_data_len = strlen((gchar *)smtp_session->send_data);
392
393         session_set_timeout(session,
394                             prefs_common.io_timeout_secs * 1000);
395         /* connect if necessary */
396         if (!was_inited && session_connect(session, ac_prefs->smtp_server, port) < 0) {
397                 session_destroy(session);
398                 send_progress_dialog_destroy(send_dialog);
399                 ac_prefs->session = NULL;
400                 return -1;
401         }
402
403         debug_print("send_message_smtp(): begin event loop\n");
404
405         if (was_inited) {
406                 /* as the server is quiet, start sending ourselves */
407                 smtp_from(smtp_session);
408         }
409
410         while (session_is_running(session) && send_dialog->cancelled == FALSE
411                 && SMTP_SESSION(session)->state != SMTP_MAIL_SENT_OK)
412                 gtk_main_iteration();
413
414         if (SMTP_SESSION(session)->error_val == SM_AUTHFAIL) {
415                 if (ac_prefs->session_smtp_passwd) {
416                         g_free(ac_prefs->session_smtp_passwd);
417                         ac_prefs->session_smtp_passwd = NULL;
418                 }
419                 ret = -1;
420         } else if (SMTP_SESSION(session)->state == SMTP_MAIL_SENT_OK) {
421                 log_message(LOG_PROTOCOL, "%s\n", _("Mail sent successfully."));
422                 ret = 0;
423         } else if (session->state == SESSION_EOF &&
424                    SMTP_SESSION(session)->state == SMTP_QUIT) {
425                 /* consider EOF right after QUIT successful */
426                 log_warning(LOG_PROTOCOL, "%s\n", _("Connection closed by the remote host."));
427                 ret = 0;
428         } else if (session->state == SESSION_ERROR ||
429                    session->state == SESSION_EOF ||
430                    session->state == SESSION_TIMEOUT ||
431                    SMTP_SESSION(session)->state == SMTP_ERROR ||
432                    SMTP_SESSION(session)->error_val != SM_OK)
433                 ret = -1;
434         else if (send_dialog->cancelled == TRUE)
435                 ret = -1;
436
437         if (ret == -1) {
438                 manage_window_focus_in(send_dialog->dialog->window, NULL, NULL);
439                 send_put_error(session);
440                 manage_window_focus_out(send_dialog->dialog->window, NULL, NULL);
441         }
442
443         /* if we should close the connection, let's do it.
444          * Close it in case of error, too, as it helps reinitializing things
445          * easier.
446          */
447         if (!keep_session || ret != 0) {
448                 if (session_is_connected(session))
449                         smtp_quit(smtp_session);
450                 while (session_is_connected(session) && !send_dialog->cancelled)
451                         gtk_main_iteration();
452                 session_destroy(session);
453                 ac_prefs->session = NULL;
454                 send_progress_dialog_destroy(send_dialog);
455         } else {
456                 g_free(smtp_session->from);
457                 g_free(smtp_session->send_data);
458                 g_free(smtp_session->error_msg);
459         }
460         if (keep_session && ret == 0 && ac_prefs->session == NULL)
461                 ac_prefs->session = SMTP_SESSION(session);
462
463
464         statuswindow_pop_all();
465         statusbar_verbosity_set(FALSE);
466         return ret;
467 }
468
469 gint send_message_smtp(PrefsAccount *ac_prefs, GSList *to_list, FILE *fp)
470 {
471         return send_message_smtp_full(ac_prefs, to_list, fp, FALSE);
472 }
473
474 static gint send_recv_message(Session *session, const gchar *msg, gpointer data)
475 {
476         gchar buf[BUFFSIZE];
477         SMTPSession *smtp_session = SMTP_SESSION(session);
478         SendProgressDialog *dialog = (SendProgressDialog *)data;
479         gchar *state_str = NULL;
480
481         cm_return_val_if_fail(dialog != NULL, -1);
482
483         switch (smtp_session->state) {
484         case SMTP_READY:
485                 return 0;
486         case SMTP_HELO:
487                 g_snprintf(buf, sizeof(buf), _("Sending HELO..."));
488                 state_str = _("Authenticating");
489                 statuswindow_print_all(_("Sending message..."));
490                 break;
491         case SMTP_EHLO:
492                 g_snprintf(buf, sizeof(buf), _("Sending EHLO..."));
493                 state_str = _("Authenticating");
494                 statuswindow_print_all(_("Sending message..."));
495                 break;
496         case SMTP_AUTH:
497                 g_snprintf(buf, sizeof(buf), _("Authenticating..."));
498                 state_str = _("Authenticating");
499                 break;
500         case SMTP_FROM:
501                 g_snprintf(buf, sizeof(buf), _("Sending MAIL FROM..."));
502                 state_str = _("Sending");
503                 break;
504         case SMTP_RCPT:
505                 g_snprintf(buf, sizeof(buf), _("Sending RCPT TO..."));
506                 state_str = _("Sending");
507                 break;
508         case SMTP_DATA:
509         case SMTP_EOM:
510                 g_snprintf(buf, sizeof(buf), _("Sending DATA..."));
511                 state_str = _("Sending");
512                 break;
513         case SMTP_QUIT:
514                 g_snprintf(buf, sizeof(buf), _("Quitting..."));
515                 state_str = _("Quitting");
516                 break;
517         case SMTP_ERROR:
518                 g_warning("send: error: %s", msg);
519                 return 0;
520         default:
521                 return 0;
522         }
523
524         progress_dialog_set_label(dialog->dialog, buf);
525         progress_dialog_list_set_status(dialog->dialog, 0, state_str);
526
527         return 0;
528 }
529
530 static gint send_send_data_progressive(Session *session, guint cur_len,
531                                        guint total_len, gpointer data)
532 {
533         gchar buf[BUFFSIZE];
534         SendProgressDialog *dialog = (SendProgressDialog *)data;
535         MainWindow *mainwin = mainwindow_get_mainwindow();
536         
537         cm_return_val_if_fail(dialog != NULL, -1);
538
539         if (SMTP_SESSION(session)->state != SMTP_SEND_DATA &&
540             SMTP_SESSION(session)->state != SMTP_EOM)
541                 return 0;
542
543         g_snprintf(buf, sizeof(buf), _("Sending message (%d / %d bytes)"),
544                    cur_len, total_len);
545         progress_dialog_set_label(dialog->dialog, buf);
546         progress_dialog_set_fraction
547                 (dialog->dialog, (total_len == 0) ? 0 : (gfloat)cur_len / (gfloat)total_len);
548
549         if (mainwin) {
550                 if (!gtk_widget_get_visible(mainwin->progressbar))      
551                         gtk_widget_show(mainwin->progressbar);
552                 gtk_progress_bar_set_fraction
553                         (GTK_PROGRESS_BAR(mainwin->progressbar),
554                          (total_len == 0) ? 0 : (gfloat)cur_len / (gfloat)total_len);
555         }
556
557         return 0;
558 }
559
560 static gint send_send_data_finished(Session *session, guint len, gpointer data)
561 {
562         SendProgressDialog *dialog = (SendProgressDialog *)data;
563         MainWindow *mainwin = mainwindow_get_mainwindow();
564
565         cm_return_val_if_fail(dialog != NULL, -1);
566
567         send_send_data_progressive(session, len, len, dialog);
568         if (mainwin) {
569                 gtk_widget_hide(mainwin->progressbar);
570                 gtk_progress_bar_set_fraction
571                         (GTK_PROGRESS_BAR(mainwin->progressbar),(gfloat)0);
572         }
573
574         return 0;
575 }
576
577 static void send_progress_dialog_size_allocate_cb(GtkWidget *widget,
578                                          GtkAllocation *allocation)
579 {
580         cm_return_if_fail(allocation != NULL);
581
582         prefs_common.sendwin_width = allocation->width;
583         prefs_common.sendwin_height = allocation->height;
584 }
585
586 static SendProgressDialog *send_progress_dialog_create(void)
587 {
588         SendProgressDialog *dialog;
589         ProgressDialog *progress;
590         static GdkGeometry geometry;
591
592         dialog = g_new0(SendProgressDialog, 1);
593
594         progress = progress_dialog_create();
595         gtk_window_set_title(GTK_WINDOW(progress->window),
596                              _("Sending message"));
597         g_signal_connect(G_OBJECT(progress->showlog_btn), "clicked",
598                          G_CALLBACK(send_showlog_button_cb), dialog);
599         g_signal_connect(G_OBJECT(progress->cancel_btn), "clicked",
600                          G_CALLBACK(send_cancel_button_cb), dialog);
601         g_signal_connect(G_OBJECT(progress->window), "delete_event",
602                          G_CALLBACK(gtk_true), NULL);
603         gtk_window_set_modal(GTK_WINDOW(progress->window), TRUE);
604         g_signal_connect(G_OBJECT(progress->window), "size_allocate",
605                          G_CALLBACK(send_progress_dialog_size_allocate_cb), NULL);
606         manage_window_set_transient(GTK_WINDOW(progress->window));
607
608         progress_dialog_get_fraction(progress);
609
610         if (!geometry.min_height) {
611                 geometry.min_width = 460;
612                 geometry.min_height = 250;
613         }
614
615         gtk_window_set_geometry_hints(GTK_WINDOW(progress->window), NULL, &geometry,
616                                       GDK_HINT_MIN_SIZE);
617         gtk_widget_set_size_request(progress->window, prefs_common.sendwin_width,
618                                     prefs_common.sendwin_height);
619
620         if (!prefs_common.send_dialog_invisible) {
621                 gtk_widget_show_now(progress->window);
622         }
623         
624         dialog->dialog = progress;
625
626         return dialog;
627 }
628
629 static void send_progress_dialog_destroy(SendProgressDialog *dialog)
630 {
631         cm_return_if_fail(dialog != NULL);
632         if (!prefs_common.send_dialog_invisible) {
633                 progress_dialog_destroy(dialog->dialog);
634         }
635         g_free(dialog);
636         send_dialog = NULL;
637 }
638
639 static void send_showlog_button_cb(GtkWidget *widget, gpointer data)
640 {
641         MainWindow *mainwin = mainwindow_get_mainwindow();
642
643         log_window_show(mainwin->logwin);
644 }
645
646 static void send_cancel_button_cb(GtkWidget *widget, gpointer data)
647 {
648         SendProgressDialog *dialog = (SendProgressDialog *)data;
649         statusbar_progress_all(0,0,0);
650
651         dialog->cancelled = TRUE;
652 }
653
654 static void send_put_error(Session *session)
655 {
656         gchar *msg;
657         gchar *log_msg = NULL;
658         gchar *err_msg = NULL;
659
660         msg = SMTP_SESSION(session)->error_msg;
661
662         switch (SMTP_SESSION(session)->error_val) {
663         case SM_ERROR:
664         case SM_UNRECOVERABLE:
665                 log_msg = _("Error occurred while sending the message.");
666                 if (msg)
667                         err_msg = g_strdup_printf
668                                 (_("Error occurred while sending the message:\n%s"),
669                                  msg);
670                 else
671                         err_msg = g_strdup(log_msg);
672                 break;
673         case SM_AUTHFAIL:
674                 log_msg = _("Authentication failed.");
675                 if (msg)
676                         err_msg = g_strdup_printf
677                                 (_("Authentication failed:\n%s"), msg);
678                 else
679                         err_msg = g_strdup(log_msg);
680                 break;
681         default:
682                 switch (session->state) {
683                 case SESSION_ERROR:
684                         log_msg =
685                                 _("Error occurred while sending the message.");
686                         err_msg = g_strdup(log_msg);
687                         break;
688                 case SESSION_EOF:
689                         log_msg = _("Connection closed by the remote host.");
690                         err_msg = g_strdup(log_msg);
691                         break;
692                 case SESSION_TIMEOUT:
693                         log_msg = _("Session timed out. You may be able to "
694                                     "recover by increasing the timeout value in "
695                                     "Preferences/Other/Miscellaneous.");
696                         err_msg = g_strdup(log_msg);
697                         break;
698                 default:
699                         break;
700                 }
701                 break;
702         }
703
704         if (err_msg) {
705                 log_error(LOG_PROTOCOL, "%s\n", err_msg);
706                 g_free(err_msg);
707         } else {
708                 if (log_msg)
709                         log_warning(LOG_PROTOCOL, "%s\n", log_msg);
710         }
711 }
712