Initial conversation (experimental) commit

1 files changed, 419 insertions, 0 deletions

diff --git a/src/conversation/gnunet-conversation.c b/src/conversation/gnunet-conversation.c
new file mode 100644
index 000000000..9570737f4
--- /dev/null
+++ b/src/conversation/gnunet-conversation.c
@@ -0,0 +1,419 @@
+/*
+                 This file is part of GNUnet.
+                 (C)
+
+                 GNUnet is free software; you can redistribute it and/or modify
+                 it under the terms of the GNU General Public License as published
+                 by the Free Software Foundation; either version 3, or (at your
+                 option) any later version.
+
+                 GNUnet is distributed in the hope that it will be useful, but
+                 WITHOUT ANY WARRANTY; without even the implied warranty of
+                 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+                 General Public License for more details.
+
+                 You should have received a copy of the GNU General Public License
+                 along with GNUnet; see the file COPYING.  If not, write to the
+                 Free Software Foundation, InGNUNET_SERVERc., 59 Temple Place - Suite 330,
+                 Boston, MA 02111-1307, USA.
+*/
+
+/**
+ * @file conversation/gnunet-conversation.c
+ * @brief conversation implementation
+ * @author Simon Dieterle
+ * @author Andreas Fuchs
+ */
+#include <gnunet/platform.h>
+#include <gnunet/gnunet_constants.h>
+#include <gnunet/gnunet_util_lib.h>
+#include "gnunet_conversation_service.h"
+#include <fcntl.h>
+
+#define MAX_MESSAGE_LENGTH   (32 * 1024)
+
+/**
+* CONVERSATION handle
+*/
+struct GNUNET_CONVERSATION_Handle *conversation = NULL;
+
+/**
+* Task which handles the commands
+*/
+static GNUNET_SCHEDULER_TaskIdentifier handle_cmd_task;
+
+/**
+* Function declareation for executing a action
+*/
+typedef int (*ActionFunction) (const char *argumetns, const void *xtra);
+
+/**
+* Structure which defines a command
+*/
+struct VoipCommand
+{
+  const char *command;
+  ActionFunction Action;
+  const char *helptext;
+};
+
+/******************************************************************************/
+/***********************         DECLARATIONS         *************************/
+/******************************************************************************/
+
+static int do_help (const char *args, const void *xtra);
+
+/******************************************************************************/
+/***********************         Functions            *************************/
+/******************************************************************************/
+
+
+/**
+ * Method called whenever a call is incoming
+ *
+ * @param cls closure
+ * @param handle to the conversation session
+ * @param caller peer that calls you
+ */
+void
+call_handler (void *cls, struct GNUNET_CONVERSATION_Handle *handle,
+              const struct GNUNET_PeerIdentity *caller)
+{
+  FPRINTF (stdout, _("Incoming call from peer: %s\n"),
+           GNUNET_i2s_full (caller));
+}
+
+/**
+ * Method called whenever a call is rejected
+ *
+ * @param cls closure
+ * @param handle to the conversation session
+ * @param peer peer that rejected your call
+ */
+void
+reject_handler (void *cls, struct GNUNET_CONVERSATION_Handle *handle, int reason,
+                const struct GNUNET_PeerIdentity *peer)
+{
+  FPRINTF (stdout, _("Peer %s rejected your call. Reason: %d\n"),
+           GNUNET_i2s_full (peer), reason);
+}
+
+/**
+ * Method called whenever a notification is there
+ *
+ * @param cls closure
+ * @param handle to the conversation session
+ * @param type the type of the notification
+ * @param peer peer that the notification is about
+ */
+void
+notification_handler (void *cls, struct GNUNET_CONVERSATION_Handle *handle, int type,
+                      const struct GNUNET_PeerIdentity *peer)
+{
+  switch (type)
+    {
+    case NotificationType_SERVICE_BLOCKED:
+      FPRINTF (stdout, _("The service is already in use. Try again later."));
+
+      break;
+
+    case NotificationType_NO_PEER:
+      FPRINTF (stdout, _("The Peer you were calling is no correct peer.\n"));
+
+      break;
+
+    case NotificationType_NO_ANSWER:
+      FPRINTF (stdout, _("Peer %s did not answer your call.\n"),
+               GNUNET_i2s_full (peer));
+
+      break;
+
+    case NotificationType_AVAILABLE_AGAIN:
+      FPRINTF (stdout, _("Peer %s is now available.\n"),
+               GNUNET_i2s_full (peer));
+
+      break;
+
+    case NotificationType_CALL_ACCEPTED:
+      FPRINTF (stdout, _("Peer %s has accepted your call.\n"),
+               GNUNET_i2s_full (peer));
+
+      break;
+
+    case NotificationType_CALL_TERMINATED:
+      FPRINTF (stdout, _("Peer %s has terminated the call.\n"),
+               GNUNET_i2s_full (peer));
+      break;
+    }
+
+}
+
+/**
+ * Method called whenever a notification for missed calls is there
+ *
+ * @param cls closure
+ * @param handle to the conversation session
+ * @param missed_calls a list of missed calls
+ */
+void
+missed_call_handler (void *cls, struct GNUNET_CONVERSATION_Handle *handle,
+                     struct GNUNET_CONVERSATION_MissedCallNotification *missed_calls)
+{
+  FPRINTF (stdout, _("You have missed calls.\n"));
+}
+
+/**
+* Terminating the client
+*/
+static int
+do_quit (const char *args, const void *xtra)
+{
+  return GNUNET_SYSERR;
+}
+
+/**
+*
+*/
+static int
+do_unknown (const char *msg, const void *xtra)
+{
+  FPRINTF (stderr, _("Unknown command `%s'\n"), msg);
+  return GNUNET_OK;
+}
+
+/**
+* Initiating a new call
+*/
+static int
+do_call (const char *arg, const void *xtra)
+{
+  char *callee = GNUNET_strdup (arg);
+  FPRINTF (stdout, _("Initiating call to: %s\n"), callee);
+  GNUNET_CONVERSATION_call (conversation, callee, GNUNET_YES);
+
+  return GNUNET_OK;
+}
+
+/**
+* Initiating a new call
+*/
+static int
+do_call_peer (const char *arg, const void *xtra)
+{
+  char *callee = GNUNET_strdup (arg);
+  FPRINTF (stdout, _("Initiating call to: %s\n"), callee);
+  GNUNET_CONVERSATION_call (conversation, callee, GNUNET_NO);
+
+  return GNUNET_OK;
+}
+
+/**
+* Accepting an incoming call
+*/
+static int
+do_accept (const char *args, const void *xtra)
+{
+  FPRINTF (stdout, _("Accepting the call\n"));
+  GNUNET_CONVERSATION_accept (conversation);
+
+  return GNUNET_OK;
+}
+
+/**
+* Rejecting a call
+*/
+static int
+do_reject (const char *args, const void *xtra)
+{
+  FPRINTF (stdout, _("Rejecting the call\n"));
+  GNUNET_CONVERSATION_reject (conversation);
+
+  return GNUNET_OK;
+}
+
+/**
+* Terminating a call
+*/
+static int
+do_hang_up (const char *args, const void *xtra)
+{
+  FPRINTF (stdout, _("Terminating the call\n"));
+  GNUNET_CONVERSATION_hangup (conversation);
+
+  return GNUNET_OK;
+}
+
+/**
+ * List of supported commands.
+ */
+static struct VoipCommand commands[] = {
+  {"/call ", &do_call, gettext_noop ("Use `/call gads_record'")},
+  {"/callpeer ", &do_call_peer,
+   gettext_noop ("Use `/call private_key' to call a person")},
+  {"/accept", &do_accept,
+   gettext_noop ("Use `/accept' to accept an incoming call")},
+  {"/terminate", &do_hang_up,
+   gettext_noop ("Use `/terminate' to end a call")},
+  {"/reject", &do_reject,
+   gettext_noop ("Use `/rejet' to reject an incoming call")},
+  {"/quit", &do_quit, gettext_noop ("Use `/quit' to terminate gnunet-conversation")},
+  {"/help", &do_help,
+   gettext_noop ("Use `/help command' to get help for a specific command")},
+  {"/", &do_unknown, NULL},
+  {"", &do_unknown, NULL},
+  {NULL, NULL, NULL},
+};
+
+/**
+*
+*/
+static int
+do_help (const char *args, const void *xtra)
+{
+  int i;
+
+  i = 0;
+  while ((NULL != args) && (0 != strlen (args)) &&
+         (commands[i].Action != &do_help))
+    {
+      if (0 ==
+          strncasecmp (&args[1], &commands[i].command[1], strlen (args) - 1))
+        {
+          FPRINTF (stdout, "%s\n", gettext (commands[i].helptext));
+          return GNUNET_OK;
+        }
+      i++;
+    }
+  i = 0;
+  FPRINTF (stdout, "%s", "Available commands:");
+  while (commands[i].Action != &do_help)
+    {
+      FPRINTF (stdout, " %s", gettext (commands[i].command));
+      i++;
+    }
+  FPRINTF (stdout, "%s", "\n");
+  FPRINTF (stdout, "%s\n", gettext (commands[i].helptext));
+  return GNUNET_OK;
+}
+
+/**
+*
+*/
+static void
+do_stop_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+  GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Running shutdown task\n");
+  GNUNET_CONVERSATION_disconnect (conversation);
+
+  if (handle_cmd_task != GNUNET_SCHEDULER_NO_TASK)
+    {
+      GNUNET_SCHEDULER_cancel (handle_cmd_task);
+      handle_cmd_task = GNUNET_SCHEDULER_NO_TASK;
+    }
+
+  GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Running shutdown task finished\n");
+}
+
+/**
+*
+*/
+void
+handle_command (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+  char message[MAX_MESSAGE_LENGTH + 1];
+  int i;
+
+  /* read message from command line and handle it */
+  memset (message, 0, MAX_MESSAGE_LENGTH + 1);
+  if (NULL == fgets (message, MAX_MESSAGE_LENGTH, stdin))
+    goto next;
+  if (strlen (message) == 0)
+    goto next;
+  if (message[strlen (message) - 1] == '\n')
+    message[strlen (message) - 1] = '\0';
+  if (strlen (message) == 0)
+    goto next;
+  i = 0;
+  while ((NULL != commands[i].command) &&
+         (0 !=
+          strncasecmp (commands[i].command, message,
+                       strlen (commands[i].command))))
+    i++;
+  if (GNUNET_OK !=
+      commands[i].Action (&message[strlen (commands[i].command)], NULL))
+    goto out;
+
+next:
+  handle_cmd_task =
+    GNUNET_SCHEDULER_add_delayed_with_priority (GNUNET_TIME_relative_multiply
+                                                (GNUNET_TIME_UNIT_MILLISECONDS,
+                                                 100),
+                                                GNUNET_SCHEDULER_PRIORITY_UI,
+                                                &handle_command, NULL);
+  return;
+
+out:
+  handle_cmd_task = GNUNET_SCHEDULER_NO_TASK;
+  GNUNET_SCHEDULER_shutdown ();
+}
+
+/**
+ * Main function that will be run by the scheduler.
+ *
+ * @param cls closure
+ * @param args remaining command-line arguments
+ * @param cfgfile name of the configuration file used (for saving, can be NULL!)
+ * @param c configuration
+ */
+static void
+run (void *cls, char *const *args, const char *cfgfile,
+     const struct GNUNET_CONFIGURATION_Handle *c)
+{
+  if (NULL ==
+      (conversation =
+       GNUNET_CONVERSATION_connect (c, NULL, &call_handler, &reject_handler,
+                            &notification_handler, &missed_call_handler)))
+    {
+      FPRINTF (stderr, "%s", _("Could not access CONVERSATION service.  Exiting.\n"));
+      return;
+    }
+
+  handle_cmd_task =
+    GNUNET_SCHEDULER_add_with_priority (GNUNET_SCHEDULER_PRIORITY_UI,
+                                        &handle_command, NULL);
+  GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &do_stop_task,
+                                NULL);
+}
+
+/** * The main function to conversation.
+ *
+ * @param argc number of arguments from the command line
+ * @param argv command line arguments
+ * @return 0 ok, 1 on error
+ */
+int
+main (int argc, char *const *argv)
+{
+  static const struct GNUNET_GETOPT_CommandLineOption options[] = {
+    GNUNET_GETOPT_OPTION_END
+  };
+
+  int flags;
+  int ret;
+
+  flags = fcntl (0, F_GETFL, 0);
+  flags |= O_NONBLOCK;
+  fcntl (0, F_SETFL, flags);
+
+  if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
+    return 2;
+
+  ret = GNUNET_PROGRAM_run (argc, argv, "gnunet-conversation",
+                            gettext_noop ("Print information about conversation."),
+                            options, &run, NULL);
+  GNUNET_free ((void *) argv);
+
+  return ret;
+}
+
+/* end of gnunet-conversation.c */