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- /*
- This file is part of GNUnet.
- Copyright (C) 2013, 2018, 2019 GNUnet e.V.
- GNUnet is free software: you can redistribute it and/or modify it
- under the terms of the GNU Affero General Public License as published
- by the Free Software Foundation, either version 3 of the License,
- 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
- Affero General Public License for more details.
- You should have received a copy of the GNU Affero General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
- SPDX-License-Identifier: AGPL3.0-or-later
- */
- /**
- * @file identity/gnunet-identity.c
- * @brief IDENTITY management command line tool
- * @author Christian Grothoff
- *
- * Todo:
- * - add options to get default egos
- */
- #include "platform.h"
- #include "gnunet_util_lib.h"
- #include "gnunet_identity_service.h"
- /**
- * Return value from main on timeout.
- */
- #define TIMEOUT_STATUS_CODE 40
- /**
- * Handle to IDENTITY service.
- */
- static struct GNUNET_IDENTITY_Handle *sh;
- /**
- * Was "list" specified?
- */
- static int list;
- /**
- * Was "monitor" specified?
- */
- static int monitor;
- /**
- * Was "private" specified?
- */
- static int private_keys;
- /**
- * Was "verbose" specified?
- */
- static unsigned int verbose;
- /**
- * Was "quiet" specified?
- */
- static int quiet;
- /**
- * -C option
- */
- static char *create_ego;
- /**
- * -D option
- */
- static char *delete_ego;
- /**
- * -s option.
- */
- static char *set_ego;
- /**
- * -S option.
- */
- static char *set_subsystem;
- /**
- * Operation handle for set operation.
- */
- static struct GNUNET_IDENTITY_Operation *set_op;
- /**
- * Handle for create operation.
- */
- static struct GNUNET_IDENTITY_Operation *create_op;
- /**
- * Handle for delete operation.
- */
- static struct GNUNET_IDENTITY_Operation *delete_op;
- /**
- * Value to return from #main().
- */
- static int global_ret;
- /**
- * Task run on shutdown.
- *
- * @param cls NULL
- */
- static void
- shutdown_task (void *cls)
- {
- if (NULL != set_op)
- {
- GNUNET_IDENTITY_cancel (set_op);
- set_op = NULL;
- }
- if (NULL != create_op)
- {
- GNUNET_IDENTITY_cancel (create_op);
- create_op = NULL;
- }
- if (NULL != delete_op)
- {
- GNUNET_IDENTITY_cancel (delete_op);
- delete_op = NULL;
- }
- if (NULL != set_ego)
- {
- GNUNET_free (set_ego);
- set_ego = NULL;
- }
- GNUNET_IDENTITY_disconnect (sh);
- sh = NULL;
- }
- /**
- * Test if we are finished yet.
- */
- static void
- test_finished ()
- {
- if ((NULL == create_op) && (NULL == delete_op) && (NULL == set_op) &&
- (NULL == set_subsystem) && (! list) && (! monitor))
- {
- if (TIMEOUT_STATUS_CODE == global_ret)
- global_ret = 0;
- GNUNET_SCHEDULER_shutdown ();
- }
- }
- /**
- * Deletion operation finished.
- *
- * @param cls pointer to operation handle
- * @param emsg NULL on success, otherwise an error message
- */
- static void
- delete_finished (void *cls, const char *emsg)
- {
- struct GNUNET_IDENTITY_Operation **op = cls;
- *op = NULL;
- if (NULL != emsg)
- fprintf (stderr, "%s\n", gettext (emsg));
- test_finished ();
- }
- /**
- * Creation operation finished.
- *
- * @param cls pointer to operation handle
- * @param pk private key of the ego, or NULL on error
- * @param emsg error message, NULL on success
- */
- static void
- create_finished (void *cls,
- const struct GNUNET_CRYPTO_EcdsaPrivateKey *pk,
- const char *emsg)
- {
- struct GNUNET_IDENTITY_Operation **op = cls;
- *op = NULL;
- if (NULL == pk)
- {
- fprintf (stderr, _ ("Failed to create ego: %s\n"), emsg);
- global_ret = 1;
- }
- else if (verbose)
- {
- struct GNUNET_CRYPTO_EcdsaPublicKey pub;
- char *pubs;
- GNUNET_CRYPTO_ecdsa_key_get_public (pk, &pub);
- pubs = GNUNET_CRYPTO_ecdsa_public_key_to_string (&pub);
- if (private_keys)
- {
- char *privs;
- privs = GNUNET_CRYPTO_ecdsa_private_key_to_string (pk);
- fprintf (stdout, "%s - %s\n", pubs, privs);
- GNUNET_free (privs);
- }
- else
- {
- fprintf (stdout, "%s\n", pubs);
- }
- GNUNET_free (pubs);
- }
- test_finished ();
- }
- /**
- * Function called by #GNUNET_IDENTITY_set up on completion.
- *
- * @param cls NULL
- * @param emsg error message (NULL on success)
- */
- static void
- set_done (void *cls, const char *emsg)
- {
- set_op = NULL;
- if (NULL != emsg)
- {
- fprintf (stderr, _ ("Failed to set default ego: %s\n"), emsg);
- global_ret = 1;
- }
- test_finished ();
- }
- /**
- * If listing is enabled, prints information about the egos.
- *
- * This function is initially called for all egos and then again
- * whenever a ego's identifier changes or if it is deleted. At the
- * end of the initial pass over all egos, the function is once called
- * with 'NULL' for 'ego'. That does NOT mean that the callback won't
- * be invoked in the future or that there was an error.
- *
- * When used with 'GNUNET_IDENTITY_create' or 'GNUNET_IDENTITY_get',
- * this function is only called ONCE, and 'NULL' being passed in
- * 'ego' does indicate an error (i.e. name is taken or no default
- * value is known). If 'ego' is non-NULL and if '*ctx'
- * is set in those callbacks, the value WILL be passed to a subsequent
- * call to the identity callback of 'GNUNET_IDENTITY_connect' (if
- * that one was not NULL).
- *
- * When an identity is renamed, this function is called with the
- * (known) ego but the NEW identifier.
- *
- * When an identity is deleted, this function is called with the
- * (known) ego and "NULL" for the 'identifier'. In this case,
- * the 'ego' is henceforth invalid (and the 'ctx' should also be
- * cleaned up).
- *
- * @param cls closure
- * @param ego ego handle
- * @param ctx context for application to store data for this ego
- * (during the lifetime of this process, initially NULL)
- * @param identifier identifier assigned by the user for this ego,
- * NULL if the user just deleted the ego and it
- * must thus no longer be used
- */
- static void
- print_ego (void *cls,
- struct GNUNET_IDENTITY_Ego *ego,
- void **ctx,
- const char *identifier)
- {
- struct GNUNET_CRYPTO_EcdsaPublicKey pk;
- char *s;
- char *privs;
- if ((NULL != set_ego) && (NULL != set_subsystem) && (NULL != ego) &&
- (NULL != identifier) && (0 == strcmp (identifier, set_ego)))
- {
- set_op = GNUNET_IDENTITY_set (sh, set_subsystem, ego, &set_done, NULL);
- GNUNET_free (set_subsystem);
- set_subsystem = NULL;
- GNUNET_free (set_ego);
- set_ego = NULL;
- }
- if ((NULL == ego) && (NULL != set_ego) && (NULL != set_subsystem))
- {
- fprintf (stderr,
- "Could not set ego to `%s' for subsystem `%s', ego not known\n",
- set_ego,
- set_subsystem);
- GNUNET_free (set_subsystem);
- set_subsystem = NULL;
- GNUNET_free (set_ego);
- set_ego = NULL;
- }
- if ((NULL == ego) && (! monitor))
- {
- list = 0;
- test_finished ();
- return;
- }
- if (! (list | monitor))
- return;
- if ((NULL == ego) || (NULL == identifier))
- return;
- if ((NULL != set_ego) && (0 != strcmp (identifier, set_ego)))
- return;
- GNUNET_IDENTITY_ego_get_public_key (ego, &pk);
- s = GNUNET_CRYPTO_ecdsa_public_key_to_string (&pk);
- privs = GNUNET_CRYPTO_ecdsa_private_key_to_string (
- GNUNET_IDENTITY_ego_get_private_key (ego));
- if ((monitor) || (NULL != identifier))
- {
- if (quiet)
- {
- if (private_keys)
- fprintf (stdout, "%s - %s\n", s, privs);
- else
- fprintf (stdout, "%s\n", s);
- }
- else
- {
- if (private_keys)
- fprintf (stdout, "%s - %s - %s\n", identifier, s, privs);
- else
- fprintf (stdout, "%s - %s\n", identifier, s);
- }
- }
- GNUNET_free (privs);
- GNUNET_free (s);
- }
- /**
- * 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 cfg configuration
- */
- static void
- run (void *cls,
- char *const *args,
- const char *cfgfile,
- const struct GNUNET_CONFIGURATION_Handle *cfg)
- {
- if ((NULL != set_subsystem) && (NULL == set_ego))
- {
- fprintf (stderr, "Option -s requires option -e to be specified as well.\n");
- return;
- }
- sh = GNUNET_IDENTITY_connect (cfg,
- (monitor | list) || (NULL != set_ego) ||
- (NULL != set_subsystem)
- ? &print_ego
- : NULL,
- NULL);
- if (NULL != delete_ego)
- delete_op =
- GNUNET_IDENTITY_delete (sh, delete_ego, &delete_finished, &delete_op);
- if (NULL != create_ego)
- create_op =
- GNUNET_IDENTITY_create (sh, create_ego, &create_finished, &create_op);
- GNUNET_SCHEDULER_add_shutdown (&shutdown_task, NULL);
- test_finished ();
- }
- /**
- * The main function.
- *
- * @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)
- {
- struct GNUNET_GETOPT_CommandLineOption options[] =
- {GNUNET_GETOPT_option_string ('C',
- "create",
- "NAME",
- gettext_noop ("create ego NAME"),
- &create_ego),
- GNUNET_GETOPT_option_string ('D',
- "delete",
- "NAME",
- gettext_noop ("delete ego NAME "),
- &delete_ego),
- GNUNET_GETOPT_option_flag ('d',
- "display",
- gettext_noop ("display all egos"),
- &list),
- GNUNET_GETOPT_option_flag ('q',
- "quiet",
- gettext_noop ("reduce output"),
- &quiet),
- GNUNET_GETOPT_option_string (
- 'e',
- "ego",
- "NAME",
- gettext_noop (
- "set default identity to NAME for a subsystem SUBSYSTEM (use together with -s) or restrict results to NAME (use together with -d)"),
- &set_ego),
- GNUNET_GETOPT_option_flag ('m',
- "monitor",
- gettext_noop ("run in monitor mode egos"),
- &monitor),
- GNUNET_GETOPT_option_flag ('p',
- "private-keys",
- gettext_noop ("display private keys as well"),
- &private_keys),
- GNUNET_GETOPT_option_string (
- 's',
- "set",
- "SUBSYSTEM",
- gettext_noop (
- "set default identity to EGO for a subsystem SUBSYSTEM (use together with -e)"),
- &set_subsystem),
- GNUNET_GETOPT_option_verbose (&verbose),
- GNUNET_GETOPT_OPTION_END};
- int res;
- if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
- return 4;
- global_ret = TIMEOUT_STATUS_CODE; /* timeout */
- res = GNUNET_PROGRAM_run (argc,
- argv,
- "gnunet-identity",
- gettext_noop ("Maintain egos"),
- options,
- &run,
- NULL);
- GNUNET_free ((void *) argv);
- if (GNUNET_OK != res)
- return 3;
- return global_ret;
- }
- /* end of gnunet-identity.c */
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