Imported Upstream version 0.9.2upstream/0.9.2

1 files changed, 392 insertions, 0 deletions

diff --git a/src/arm/gnunet-arm.c b/src/arm/gnunet-arm.c
new file mode 100644
index 0000000..65700ee
--- /dev/null
+++ b/src/arm/gnunet-arm.c
@@ -0,0 +1,392 @@
+/*
+     This file is part of GNUnet.
+     (C) 2009 Christian Grothoff (and other contributing authors)
+
+     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, Inc., 59 Temple Place - Suite 330,
+     Boston, MA 02111-1307, USA.
+*/
+
+/**
+ * @file arm/gnunet-arm.c
+ * @brief arm for writing a tool
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include "gnunet_arm_service.h"
+#include "gnunet_client_lib.h"
+#include "gnunet_constants.h"
+#include "gnunet_getopt_lib.h"
+#include "gnunet_program_lib.h"
+#include "gnunet_time_lib.h"
+
+/**
+ * Timeout for stopping services.  Long to give some services a real chance.
+ */
+#define STOP_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, 1)
+
+/**
+ * Timeout for stopping ARM.  Extra-long since ARM needs to stop everyone else.
+ */
+#define STOP_TIMEOUT_ARM GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, 2)
+
+/**
+ * Timeout for starting services, very short because of the strange way start works
+ * (by checking if running before starting, so really this time is always waited on
+ * startup (annoying)).
+ */
+#define START_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 1)
+
+/**
+ * Set if we are to shutdown all services (including ARM).
+ */
+static int end;
+
+/**
+ * Set if we are to start default services (including ARM).
+ */
+static int start;
+
+/**
+ * Set if we are to stop/start default services (including ARM).
+ */
+static int restart;
+
+/**
+ * Set if we should delete configuration and temp directory on exit.
+ */
+static int delete;
+
+/**
+ * Set if we should not print status messages.
+ */
+static int quiet;
+
+/**
+ * Set to the name of a service to start.
+ */
+static char *init;
+
+/**
+ * Set to the name of a service to kill.
+ */
+static char *term;
+
+/**
+ * Set to the name of the config file used.
+ */
+static const char *config_file;
+
+/**
+ * Set to the directory where runtime files are stored.
+ */
+static char *dir;
+
+/**
+ * Final status code.
+ */
+static int ret;
+
+/**
+ * Connection with ARM.
+ */
+static struct GNUNET_ARM_Handle *h;
+
+/**
+ * Our configuration.
+ */
+static const struct GNUNET_CONFIGURATION_Handle *cfg;
+
+/**
+ * Processing stage that we are in.  Simple counter.
+ */
+static unsigned int phase;
+
+/**
+ * User defined timestamp for completing operations.
+ */
+static struct GNUNET_TIME_Relative timeout;
+
+
+/**
+ * Main continuation-passing-style loop.  Runs the various
+ * jobs that we've been asked to do in order.
+ *
+ * @param cls closure, unused
+ * @param tc context, unused
+ */
+static void
+cps_loop (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
+
+
+/**
+ * Callback invoked with the status of the last operation.  Reports to the
+ * user and then runs the next phase in the FSM.
+ *
+ * @param cls pointer to "const char*" identifying service that was manipulated
+ * @param result result of the operation
+ */
+static void
+confirm_cb (void *cls, 
+	    enum GNUNET_ARM_ProcessStatus result)
+{
+  const char *service = cls;
+
+  switch (result)
+  {
+  case GNUNET_ARM_PROCESS_UNKNOWN:
+    FPRINTF (stderr, _("Service `%s' is unknown to ARM.\n"), service);
+    ret = 1;
+    break;
+  case GNUNET_ARM_PROCESS_DOWN:
+    if (quiet != GNUNET_YES)
+      FPRINTF (stdout, _("Service `%s' has been stopped.\n"), service);
+    break;
+  case GNUNET_ARM_PROCESS_ALREADY_RUNNING:
+    FPRINTF (stderr, _("Service `%s' was already running.\n"), service);
+    ret = 1;
+    break;
+  case GNUNET_ARM_PROCESS_STARTING:
+    if (quiet != GNUNET_YES)
+      FPRINTF (stdout, _("Service `%s' has been started.\n"), service);
+    break;
+  case GNUNET_ARM_PROCESS_ALREADY_STOPPING:
+    FPRINTF (stderr, _("Service `%s' was already being stopped.\n"), service);
+    ret = 1;
+    break;
+  case GNUNET_ARM_PROCESS_ALREADY_DOWN:
+    FPRINTF (stderr, _("Service `%s' was already not running.\n"), service);
+    ret = 1;
+    break;
+  case GNUNET_ARM_PROCESS_SHUTDOWN:
+    FPRINTF (stderr, "%s", _("Request ignored as ARM is shutting down.\n"));
+    ret = 1;
+    break;
+  case GNUNET_ARM_PROCESS_COMMUNICATION_ERROR:
+    FPRINTF (stderr, "%s", _("Error communicating with ARM service.\n"));
+    ret = 1;
+    break;
+  case GNUNET_ARM_PROCESS_COMMUNICATION_TIMEOUT:
+    FPRINTF (stderr, "%s",  _("Timeout communicating with ARM service.\n"));
+    ret = 1;
+    break;
+  case GNUNET_ARM_PROCESS_FAILURE:
+    FPRINTF (stderr, "%s",  _("Operation failed.\n"));
+    ret = 1;
+    break;
+  default:
+    FPRINTF (stderr, "%s",  _("Unknown response code from ARM.\n"));
+    break;
+  }
+  GNUNET_SCHEDULER_add_continuation (&cps_loop, NULL,
+				     GNUNET_SCHEDULER_REASON_PREREQ_DONE);
+}
+
+
+/**
+ * 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)
+{
+  cfg = c;
+  config_file = cfgfile;
+  if (GNUNET_CONFIGURATION_get_value_string
+      (cfg, "PATHS", "SERVICEHOME", &dir) != GNUNET_OK)
+    {
+      GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+		  _
+		  ("Fatal configuration error: `%s' option in section `%s' missing.\n"),
+		  "SERVICEHOME", "PATHS");
+      return;
+    }
+  h = GNUNET_ARM_connect (cfg, NULL);
+  if (h == NULL)
+    {
+      GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+		  _("Fatal error initializing ARM API.\n"));
+      ret = 1;
+      return;
+    }
+  GNUNET_SCHEDULER_add_continuation (&cps_loop, NULL,
+				     GNUNET_SCHEDULER_REASON_PREREQ_DONE);
+}
+
+/**
+ * Attempts to delete configuration file and SERVICEHOME
+ * on arm shutdown provided the end and delete options
+ * were specified when gnunet-arm was run.
+ */
+static void
+delete_files ()
+{
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+	      "Will attempt to remove configuration file %s and service directory %s\n",
+	      config_file, dir);
+
+  if (UNLINK (config_file) != 0)
+    {
+      GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+		  _("Failed to remove configuration file %s\n"), config_file);
+    }
+
+  if (GNUNET_DISK_directory_remove (dir) != GNUNET_OK)
+    {
+      GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+		  _("Failed to remove servicehome directory %s\n"), dir);
+
+    }
+}
+
+/**
+ * Main continuation-passing-style loop.  Runs the various
+ * jobs that we've been asked to do in order.
+ *
+ * @param cls closure, unused
+ * @param tc context, unused
+ */
+static void
+cps_loop (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+  while (1)
+    {
+      switch (phase++)
+	{
+	case 0:
+	  if (term != NULL)
+	    {
+	      GNUNET_ARM_stop_service (h, term,
+				       (0 ==
+					timeout.rel_value) ? STOP_TIMEOUT :
+				       timeout, &confirm_cb, term);
+	      return;
+	    }
+	  break;
+	case 1:
+	  if ((end) || (restart))
+	    {
+	      GNUNET_ARM_stop_service (h, "arm",
+				       (0 ==
+					timeout.rel_value) ? STOP_TIMEOUT_ARM
+				       : timeout, &confirm_cb, "arm");
+	      return;
+	    }
+	  break;
+	case 2:
+	  if (start)
+	    {
+	      GNUNET_ARM_start_service (h, "arm",
+					(0 ==
+					 timeout.rel_value) ? START_TIMEOUT :
+					timeout, &confirm_cb, "arm");
+	      return;
+	    }
+	  break;
+	case 3:
+	  if (init != NULL)
+	    {
+	      GNUNET_ARM_start_service (h, init,
+					(0 ==
+					 timeout.rel_value) ? START_TIMEOUT :
+					timeout, &confirm_cb, init);
+	      return;
+	    }
+	  break;
+	case 4:
+	  if (restart)
+	    {
+	      GNUNET_ARM_disconnect (h);
+	      phase = 0;
+	      end = 0;
+	      start = 1;
+	      restart = 0;
+	      h = GNUNET_ARM_connect (cfg, NULL);
+	      if (h == NULL)
+		{
+		  GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+			      _("Fatal error initializing ARM API.\n"));
+		  ret = 1;
+		  return;
+		}
+	      GNUNET_SCHEDULER_add_now (&cps_loop, NULL);
+	      return;
+	    }
+	  /* Fall through */
+	default:		/* last phase */
+	  GNUNET_ARM_disconnect (h);
+	  if ((end == GNUNET_YES) && (delete == GNUNET_YES))
+	    delete_files ();
+	  return;
+	}
+    }
+}
+
+
+/**
+ * The main function to obtain arm from gnunetd.
+ *
+ * @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 unsigned long long temp_timeout_ms;
+
+  static const struct GNUNET_GETOPT_CommandLineOption options[] = {
+    {'e', "end", NULL, gettext_noop ("stop all GNUnet services"),
+     GNUNET_NO, &GNUNET_GETOPT_set_one, &end},
+    {'i', "init", "SERVICE", gettext_noop ("start a particular service"),
+     GNUNET_YES, &GNUNET_GETOPT_set_string, &init},
+    {'k', "kill", "SERVICE", gettext_noop ("stop a particular service"),
+     GNUNET_YES, &GNUNET_GETOPT_set_string, &term},
+    {'s', "start", NULL, gettext_noop ("start all GNUnet default services"),
+     GNUNET_NO, &GNUNET_GETOPT_set_one, &start},
+    {'r', "restart", NULL,
+     gettext_noop ("stop and start all GNUnet default services"),
+     GNUNET_NO, &GNUNET_GETOPT_set_one, &restart},
+    {'d', "delete", NULL,
+     gettext_noop ("delete config file and directory on exit"),
+     GNUNET_NO, &GNUNET_GETOPT_set_one, &delete},
+    {'q', "quiet", NULL, gettext_noop ("don't print status messages"),
+     GNUNET_NO, &GNUNET_GETOPT_set_one, &quiet},
+    {'T', "timeout", NULL,
+     gettext_noop ("timeout for completing current operation"),
+     GNUNET_YES, &GNUNET_GETOPT_set_ulong, &temp_timeout_ms},
+    GNUNET_GETOPT_OPTION_END
+  };
+
+  if (temp_timeout_ms > 0)
+    timeout.rel_value = temp_timeout_ms;
+
+  if (GNUNET_OK ==
+      GNUNET_PROGRAM_run (argc, argv, "gnunet-arm",
+			  gettext_noop
+			  ("Control services and the Automated Restart Manager (ARM)"),
+			  options, &run, NULL))
+    {
+      return ret;
+    }
+
+  return 1;
+}
+
+/* end of gnunet-arm.c */