gio/tests/gtlsconsoleinteraction.c

   1 /* GIO - GLib Input, Output and Streaming Library
   2  *
   3  * Copyright (C) 2011 Collabora, Ltd.
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library 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 GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General
  16  * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * Author: Stef Walter <stefw@collabora.co.uk>
  19  */
  20
  21 #include "config.h"
  22
  23 #include <glib.h>
  24 #include <glib/gprintf.h>
  25 #include <string.h>
  26
  27 #ifdef G_OS_WIN32
  28 #include <conio.h>
  29 #endif
  30
  31 #include "gtlsconsoleinteraction.h"
  32
  33 /*
  34  * WARNING: This is not the example you're looking for [slow hand wave]. This
  35  * is not industrial strength, it's just for testing. It uses embarassing
  36  * functions like getpass() and does lazy things with threads.
  37  */
  38
  39 G_DEFINE_TYPE (GTlsConsoleInteraction, g_tls_console_interaction, G_TYPE_TLS_INTERACTION);
  40
  41 #if defined(G_OS_WIN32) || defined(__BIONIC__)
  42 /* win32 doesn't have getpass() */
  43 #include <stdio.h>
  44 #ifndef BUFSIZ
  45 #define BUFSIZ 8192
  46 #endif
  47 static gchar *
  48 getpass (const gchar *prompt)
  49 {
  50   static gchar buf[BUFSIZ];
  51   gint i;
  52
  53   g_printf ("%s", prompt);
  54   fflush (stdout);
  55
  56   for (i = 0; i < BUFSIZ - 1; ++i)
  57     {
  58 #ifdef __BIONIC__
  59       buf[i] = getc (stdin);
  60 #else
  61       buf[i] = _getch ();
  62 #endif
  63       if (buf[i] == '\r')
  64         break;
  65     }
  66   buf[i] = '\0';
  67
  68   g_printf ("\n");
  69
  70   return &buf[0];
  71 }
  72 #endif
  73
  74 static GTlsInteractionResult
  75 g_tls_console_interaction_ask_password (GTlsInteraction    *interaction,
  76                                         GTlsPassword       *password,
  77                                         GCancellable       *cancellable,
  78                                         GError            **error)
  79 {
  80   const gchar *value;
  81   gchar *prompt;
  82
  83   prompt = g_strdup_printf ("Password \"%s\"': ", g_tls_password_get_description (password));
  84   value = getpass (prompt);
  85   g_free (prompt);
  86
  87   if (g_cancellable_set_error_if_cancelled (cancellable, error))
  88     return G_TLS_INTERACTION_FAILED;
  89
  90   g_tls_password_set_value (password, (guchar *)value, -1);
  91   return G_TLS_INTERACTION_HANDLED;
  92 }
  93
  94 static void
  95 ask_password_with_getpass (GTask        *task,
  96                            gpointer      object,
  97                            gpointer      task_data,
  98                            GCancellable *cancellable)
  99 {
 100   GTlsPassword *password = task_data;
 101   GError *error = NULL;
 102
 103   g_tls_console_interaction_ask_password (G_TLS_INTERACTION (object), password,
 104                                           cancellable, &error);
 105   if (error != NULL)
 106     g_task_return_error (task, error);
 107   else
 108     g_task_return_int (task, G_TLS_INTERACTION_HANDLED);
 109 }
 110
 111 static void
 112 g_tls_console_interaction_ask_password_async (GTlsInteraction    *interaction,
 113                                               GTlsPassword       *password,
 114                                               GCancellable       *cancellable,
 115                                               GAsyncReadyCallback callback,
 116                                               gpointer            user_data)
 117 {
 118   GTask *task;
 119
 120   task = g_task_new (interaction, cancellable, callback, user_data);
 121   g_task_set_task_data (task, g_object_ref (password), g_object_unref);
 122   g_task_run_in_thread (task, ask_password_with_getpass);
 123   g_object_unref (task);
 124 }
 125
 126 static GTlsInteractionResult
 127 g_tls_console_interaction_ask_password_finish (GTlsInteraction    *interaction,
 128                                                GAsyncResult       *result,
 129                                                GError            **error)
 130 {
 131   GTlsInteractionResult ret;
 132
 133   g_return_val_if_fail (g_task_is_valid (result, interaction),
 134                         G_TLS_INTERACTION_FAILED);
 135
 136   ret = g_task_propagate_int (G_TASK (result), error);
 137   if (ret == (GTlsInteractionResult)-1)
 138     return G_TLS_INTERACTION_FAILED;
 139   else
 140     return ret;
 141 }
 142
 143 static void
 144 g_tls_console_interaction_init (GTlsConsoleInteraction *interaction)
 145 {
 146
 147 }
 148
 149 static void
 150 g_tls_console_interaction_class_init (GTlsConsoleInteractionClass *klass)
 151 {
 152   GTlsInteractionClass *interaction_class = G_TLS_INTERACTION_CLASS (klass);
 153   interaction_class->ask_password = g_tls_console_interaction_ask_password;
 154   interaction_class->ask_password_async = g_tls_console_interaction_ask_password_async;
 155   interaction_class->ask_password_finish = g_tls_console_interaction_ask_password_finish;
 156 }
 157
 158 GTlsInteraction *
 159 g_tls_console_interaction_new (void)
 160 {
 161   return g_object_new (G_TYPE_TLS_CONSOLE_INTERACTION, NULL);
 162 }