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- /*
- 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_SECONDS, 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_SECONDS, 3)
- /**
- * 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_MILLISECONDS, 1000)
- /**
- * 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 TEST_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 2)
- /**
- * 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 a service to test.
- */
- static char *test;
- /**
- * 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.
- */
- 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 success GNUNET_OK if service is now running, GNUNET_NO if not, GNUNET_SYSERR on error
- */
- static void
- confirm_cb (void *cls, int success)
- {
- const char *service = cls;
- switch (success)
- {
- case GNUNET_OK:
- if (quiet != GNUNET_YES)
- fprintf(stdout, _("Service `%s' has been started.\n"), service);
- if ((phase - 1 != 2) && (phase - 1 != 3))
- {
- if (quiet != GNUNET_YES)
- fprintf(stdout, _("Failed to stop service `%s'!\n"), service);
- ret = 1;
- }
- break;
- case GNUNET_NO:
- if (quiet != GNUNET_YES)
- fprintf(stdout, _("Service `%s' has been stopped.\n"), service);
- if ((phase - 1 != 0) && (phase - 1 != 1))
- {
- if (quiet != GNUNET_YES)
- fprintf(stdout, _("Failed to start service `%s'!\n"), service);
- ret = 1;
- }
- break;
- case GNUNET_SYSERR:
- if (quiet != GNUNET_YES)
- fprintf(stdout,
- _("Some error communicating with service `%s'.\n"), service);
- ret = 1;
- break;
- }
- GNUNET_SCHEDULER_add_continuation (&cps_loop,
- NULL,
- GNUNET_SCHEDULER_REASON_PREREQ_DONE);
- }
- /**
- * Function called to confirm that a service is running (or that
- * it is not running).
- *
- * @param cls pointer to "const char*" identifying service that was manipulated
- * @param tc reason determines if service is now running
- */
- static void
- confirm_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
- {
- const char *service = cls;
- if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_PREREQ_DONE))
- {
- if (quiet != GNUNET_YES)
- fprintf(stdout, _("Service `%s' is running.\n"), service);
- }
- else
- {
- if (quiet != GNUNET_YES)
- fprintf(stdout, _("Service `%s' is not running.\n"), service);
- }
- 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 (test != NULL)
- {
- GNUNET_CLIENT_service_test (test, cfg, (0 == timeout.rel_value) ? TEST_TIMEOUT : timeout, &confirm_task, test);
- return;
- }
- break;
- case 5:
- 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},
- {'t', "test", "SERVICE",
- gettext_noop ("test if a particular service is running"),
- GNUNET_YES, &GNUNET_GETOPT_set_string, &test},
- {'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 */
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