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 <purple.h>
  23
  24 #define PLUGIN_ID "core-one_time_password"
  25 #define PREF_NAME PLUGIN_ID "_enabled"
  26
  27 static void
  28 signed_on_cb(PurpleConnection *conn, void *data)
  29 {
  30         PurpleAccount *account = purple_connection_get_account(conn);
  31
  32         if (purple_account_get_bool(account, PREF_NAME, FALSE)) {
  33                 if(purple_account_get_remember_password(account))
  34                         purple_debug_error("One Time Password",
  35                                            "Unable to enforce one time password for account %s (%s).\n"
  36                                            "Account is set to remember the password.\n",
  37                                            purple_account_get_username(account),
  38                                            purple_account_get_protocol_name(account));
  39                 else {
  40
  41                         purple_debug_info("One Time Password", "Clearing password for account %s (%s).\n",
  42                                           purple_account_get_username(account),
  43                                           purple_account_get_protocol_name(account));
  44
  45                         purple_account_set_password(account, NULL, NULL, NULL);
  46                         /* TODO: Do we need to somehow clear conn->password ? */
  47                 }
  48         }
  49 }
  50
  51 static PurplePluginInfo *
  52 plugin_query(GError **error)
  53 {
  54         const gchar * const authors[] = {
  55                 "Daniel Atallah <datallah@pidgin.im>",
  56                 NULL
  57         };
  58
  59         return purple_plugin_info_new(
  60                 "id",           PLUGIN_ID,
  61                 "name",         N_("One Time Password Support"),
  62                 "version",      DISPLAY_VERSION,
  63                 "category",     N_("Security"),
  64                 "summary",      N_("Enforce that passwords are used only once."),
  65                 "description",  N_("Allows you to enforce on a per-account basis that "
  66                                    "passwords not being saved are only used in a "
  67                                    "single successful connection.\n"
  68                                    "Note: The account password must not be saved for "
  69                                    "this to work."),
  70                 "authors",      authors,
  71                 "website",      PURPLE_WEBSITE,
  72                 "abi-version",  PURPLE_ABI_VERSION,
  73                 NULL
  74         );
  75 }
  76
  77 static gboolean
  78 plugin_load(PurplePlugin *plugin, GError **error)
  79 {
  80         PurpleProtocol *protocol;
  81         PurpleAccountOption *option;
  82         GList *list, *l;
  83
  84         list = purple_protocols_get_all();
  85
  86         /* Register protocol preference. */
  87         for (l = list; l != NULL; l = l->next) {
  88                 protocol = PURPLE_PROTOCOL(l->data);
  89                 if (protocol != NULL && !(purple_protocol_get_options(protocol) & OPT_PROTO_NO_PASSWORD)) {
  90                         option = purple_account_option_bool_new(_("One Time Password"),
  91                                                                 PREF_NAME, FALSE);
  92                         protocol->account_options = g_list_append(protocol->account_options, option);
  93                 }
  94         }
  95         g_list_free(list);
  96
  97         /* Register callback. */
  98         purple_signal_connect(purple_connections_get_handle(), "signed-on",
  99                               plugin, PURPLE_CALLBACK(signed_on_cb), NULL);
 100
 101         return TRUE;
 102 }
 103
 104 static gboolean
 105 plugin_unload(PurplePlugin *plugin, GError **error)
 106 {
 107         PurpleProtocol *protocol;
 108         PurpleAccountOption *option;
 109         GList *list, *l, *options;
 110
 111         list = purple_protocols_get_all();
 112
 113         /* Remove protocol preference. */
 114         for (l = list; l != NULL; l = l->next) {
 115                 protocol = PURPLE_PROTOCOL(l->data);
 116                 if (protocol != NULL && !(purple_protocol_get_options(protocol) & OPT_PROTO_NO_PASSWORD)) {
 117                         options = purple_protocol_get_account_options(protocol);
 118                         while (options != NULL) {
 119                                 option = (PurpleAccountOption *) options->data;
 120                                 if (purple_strequal(PREF_NAME, purple_account_option_get_setting(option))) {
 121                                         protocol->account_options = g_list_delete_link(protocol->account_options, options);
 122                                         purple_account_option_destroy(option);
 123                                         break;
 124                                 }
 125                                 options = options->next;
 126                         }
 127                 }
 128         }
 129         g_list_free(list);
 130
 131         /* Callback will be automagically unregistered */
 132
 133         return TRUE;
 134 }
 135
 136 PURPLE_PLUGIN_INIT(one_time_password, plugin_query, plugin_load, plugin_unload);