libpurple/plugins/one_time_password.c

   1 /*
   2  * One Time Password support plugin for libpurple
   3  *
   4  * Copyright (C) 2009, Daniel Atallah <datallah@pidgin.im>
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation; either version 2 of the
   9  * License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19  * 02111-1301, USA.
  20  */
  21 #include "internal.h"
  22 #include "debug.h"
  23 #include "plugins.h"
  24 #include "version.h"
  25 #include "account.h"
  26 #include "accountopt.h"
  27
  28 #define PLUGIN_ID "core-one_time_password"
  29 #define PREF_NAME PLUGIN_ID "_enabled"
  30
  31 static void
  32 signed_on_cb(PurpleConnection *conn, void *data)
  33 {
  34         PurpleAccount *account = purple_connection_get_account(conn);
  35
  36         if (purple_account_get_bool(account, PREF_NAME, FALSE)) {
  37                 if(purple_account_get_remember_password(account))
  38                         purple_debug_error("One Time Password",
  39                                            "Unable to enforce one time password for account %s (%s).\n"
  40                                            "Account is set to remember the password.\n",
  41                                            purple_account_get_username(account),
  42                                            purple_account_get_protocol_name(account));
  43                 else {
  44
  45                         purple_debug_info("One Time Password", "Clearing password for account %s (%s).\n",
  46                                           purple_account_get_username(account),
  47                                           purple_account_get_protocol_name(account));
  48
  49                         purple_account_set_password(account, NULL, NULL, NULL);
  50                         /* TODO: Do we need to somehow clear conn->password ? */
  51                 }
  52         }
  53 }
  54
  55 static PurplePluginInfo *
  56 plugin_query(GError **error)
  57 {
  58         const gchar * const authors[] = {
  59                 "Daniel Atallah <datallah@pidgin.im>",
  60                 NULL
  61         };
  62
  63         return purple_plugin_info_new(
  64                 "id",           PLUGIN_ID,
  65                 "name",         N_("One Time Password Support"),
  66                 "version",      DISPLAY_VERSION,
  67                 "category",     N_("Security"),
  68                 "summary",      N_("Enforce that passwords are used only once."),
  69                 "description",  N_("Allows you to enforce on a per-account basis that "
  70                                    "passwords not being saved are only used in a "
  71                                    "single successful connection.\n"
  72                                    "Note: The account password must not be saved for "
  73                                    "this to work."),
  74                 "authors",      authors,
  75                 "website",      PURPLE_WEBSITE,
  76                 "abi-version",  PURPLE_ABI_VERSION,
  77                 NULL
  78         );
  79 }
  80
  81 static gboolean
  82 plugin_load(PurplePlugin *plugin, GError **error)
  83 {
  84         PurpleProtocol *protocol;
  85         PurpleAccountOption *option;
  86         GList *list, *l;
  87
  88         list = purple_protocols_get_all();
  89
  90         /* Register protocol preference. */
  91         for (l = list; l != NULL; l = l->next) {
  92                 protocol = PURPLE_PROTOCOL(l->data);
  93                 if (protocol != NULL && !(purple_protocol_get_options(protocol) & OPT_PROTO_NO_PASSWORD)) {
  94                         option = purple_account_option_bool_new(_("One Time Password"),
  95                                                                 PREF_NAME, FALSE);
  96                         protocol->account_options = g_list_append(protocol->account_options, option);
  97                 }
  98         }
  99         g_list_free(list);
 100
 101         /* Register callback. */
 102         purple_signal_connect(purple_connections_get_handle(), "signed-on",
 103                               plugin, PURPLE_CALLBACK(signed_on_cb), NULL);
 104
 105         return TRUE;
 106 }
 107
 108 static gboolean
 109 plugin_unload(PurplePlugin *plugin, GError **error)
 110 {
 111         PurpleProtocol *protocol;
 112         PurpleAccountOption *option;
 113         GList *list, *l, *options;
 114
 115         list = purple_protocols_get_all();
 116
 117         /* Remove protocol preference. */
 118         for (l = list; l != NULL; l = l->next) {
 119                 protocol = PURPLE_PROTOCOL(l->data);
 120                 if (protocol != NULL && !(purple_protocol_get_options(protocol) & OPT_PROTO_NO_PASSWORD)) {
 121                         options = purple_protocol_get_account_options(protocol);
 122                         while (options != NULL) {
 123                                 option = (PurpleAccountOption *) options->data;
 124                                 if (strcmp(PREF_NAME, purple_account_option_get_setting(option)) == 0) {
 125                                         protocol->account_options = g_list_delete_link(protocol->account_options, options);
 126                                         purple_account_option_destroy(option);
 127                                         break;
 128                                 }
 129                                 options = options->next;
 130                         }
 131                 }
 132         }
 133         g_list_free(list);
 134
 135         /* Callback will be automagically unregistered */
 136
 137         return TRUE;
 138 }
 139
 140 PURPLE_PLUGIN_INIT(one_time_password, plugin_query, plugin_load, plugin_unload);