src/prefs_migration.c

   1 /*
   2  * Claws Mail -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 2016 the Claws Mail team
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 3 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #ifdef HAVE_CONFIG_H
  20 #include "config.h"
  21 #include "claws-features.h"
  22 #endif
  23
  24 #ifdef ENABLE_NLS
  25 #include <glib/gi18n.h>
  26 #else
  27 #define _(a) (a)
  28 #define N_(a) (a)
  29 #endif
  30
  31 #include "defs.h"
  32 #include "account.h"
  33 #include "prefs_account.h"
  34 #include "prefs_common.h"
  35 #include "alertpanel.h"
  36
  37 static void _update_config(gint version)
  38 {
  39         GList *cur;
  40         PrefsAccount *ac_prefs;
  41
  42         debug_print("Updating config version %d to %d.\n", version, version + 1);
  43
  44         switch (version) {
  45                 case 0:
  46
  47                         /* Removing A_APOP and A_RPOP from RecvProtocol enum,
  48                          * protocol numbers above A_POP3 need to be adjusted.
  49                          *
  50                          * In config_version=0:
  51                          * A_POP3 is 0,
  52                          * A_APOP is 1,
  53                          * A_RPOP is 2,
  54                          * A_IMAP and the rest are from 3 up.
  55                          * We can't use the macros, since they may change in the
  56                          * future. Numbers do not change. :) */
  57                         for (cur = account_get_list(); cur != NULL; cur = cur->next) {
  58                                 ac_prefs = (PrefsAccount *)cur->data;
  59                                 if (ac_prefs->protocol == 1) {
  60                                         ac_prefs->protocol = 0;
  61                                 } else if (ac_prefs->protocol > 2) {
  62                                         /* A_IMAP and above gets bumped down by 2. */
  63                                         ac_prefs->protocol -= 2;
  64                                 }
  65                         }
  66
  67                         break;
  68
  69                 case 1:
  70
  71                         /* The autochk_interval preference is now
  72                          * interpreted as seconds instead of minutes */
  73                         prefs_common.autochk_itv *= 60;
  74
  75                         break;
  76
  77                 default:
  78                         break;
  79         }
  80 }
  81
  82 int prefs_update_config_version()
  83 {
  84         gint ver = prefs_common_get_prefs()->config_version;
  85
  86         if (ver > CLAWS_CONFIG_VERSION) {
  87                 gchar *msg;
  88                 gchar *markup;
  89                 AlertValue av;
  90
  91                 markup = g_strdup_printf(
  92                         "<a href=\"%s\"><span underline=\"none\">",
  93                         CONFIG_VERSIONS_URI);
  94                 msg = g_strdup_printf(
  95                         _("Your Claws Mail configuration is from a newer "
  96                           "version than the version which you are currently "
  97                           "using.\n\n"
  98                           "This is not recommended.\n\n"
  99                           "For further information see the %sClaws Mail "
 100                           "website%s.\n\n"
 101                           "Do you want to exit now?"),
 102                           markup, "</span></a>");
 103                 g_free(markup);
 104                 av = alertpanel_full(_("Configuration warning"), msg,
 105                                         GTK_STOCK_NO, GTK_STOCK_YES, NULL,
 106                                         FALSE, NULL,
 107                                         ALERT_ERROR, G_ALERTALTERNATE);
 108                 g_free(msg);
 109
 110                 if (av != G_ALERTDEFAULT)
 111                         return -1; /* abort startup */
 112
 113                 return 0; /* hic sunt dracones */
 114         }
 115
 116         debug_print("Starting config update at config_version %d.\n", ver);
 117         if (ver == CLAWS_CONFIG_VERSION) {
 118                 debug_print("No update necessary, already at latest config_version.\n");
 119                 return 0; /* nothing to do */
 120         }
 121
 122         while (ver < CLAWS_CONFIG_VERSION) {
 123                 _update_config(ver++);
 124                 prefs_common_get_prefs()->config_version = ver;
 125         }
 126
 127         debug_print("Config update done.\n");
 128         return 1; /* update done */
 129 }