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- /*
- This file is part of GNUnet.
- Copyright (C) 2012, 2013, 2014, 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 gnunet-namestore.c
- * @brief command line tool to manipulate the local zone
- * @author Christian Grothoff
- *
- * TODO:
- * - test
- */
- #include "platform.h"
- #include <gnunet_util_lib.h>
- #include <gnunet_dnsparser_lib.h>
- #include <gnunet_identity_service.h>
- #include <gnunet_gnsrecord_lib.h>
- #include <gnunet_gns_service.h>
- #include <gnunet_namestore_service.h>
- /**
- * Entry in record set for bulk processing.
- */
- struct RecordSetEntry
- {
- /**
- * Kept in a linked list.
- */
- struct RecordSetEntry *next;
- /**
- * The record to add/remove.
- */
- struct GNUNET_GNSRECORD_Data record;
- };
- /**
- * Handle to the namestore.
- */
- static struct GNUNET_NAMESTORE_Handle *ns;
- /**
- * Private key for the our zone.
- */
- static struct GNUNET_IDENTITY_PrivateKey zone_pkey;
- /**
- * Handle to identity lookup.
- */
- static struct GNUNET_IDENTITY_EgoLookup *el;
- /**
- * Identity service handle
- */
- static struct GNUNET_IDENTITY_Handle *idh;
- /**
- * Obtain default ego
- */
- struct GNUNET_IDENTITY_Operation *get_default;
- /**
- * Name of the ego controlling the zone.
- */
- static char *ego_name;
- /**
- * Desired action is to add a record.
- */
- static int add;
- /**
- * Queue entry for the 'add-uri' operation.
- */
- static struct GNUNET_NAMESTORE_QueueEntry *add_qe_uri;
- /**
- * Queue entry for the 'add' operation.
- */
- static struct GNUNET_NAMESTORE_QueueEntry *add_qe;
- /**
- * Queue entry for the 'lookup' operation.
- */
- static struct GNUNET_NAMESTORE_QueueEntry *get_qe;
- /**
- * Queue entry for the 'reverse lookup' operation (in combination with a name).
- */
- static struct GNUNET_NAMESTORE_QueueEntry *reverse_qe;
- /**
- * Desired action is to list records.
- */
- static int list;
- /**
- * List iterator for the 'list' operation.
- */
- static struct GNUNET_NAMESTORE_ZoneIterator *list_it;
- /**
- * Desired action is to remove a record.
- */
- static int del;
- /**
- * Is record public (opposite of #GNUNET_GNSRECORD_RF_PRIVATE)
- */
- static int is_public;
- /**
- * Is record a shadow record (#GNUNET_GNSRECORD_RF_SHADOW_RECORD)
- */
- static int is_shadow;
- /**
- * Queue entry for the 'del' operation.
- */
- static struct GNUNET_NAMESTORE_QueueEntry *del_qe;
- /**
- * Queue entry for the 'set/replace' operation.
- */
- static struct GNUNET_NAMESTORE_QueueEntry *set_qe;
- /**
- * Name of the records to add/list/remove.
- */
- static char *name;
- /**
- * Value of the record to add/remove.
- */
- static char *value;
- /**
- * URI to import.
- */
- static char *uri;
- /**
- * Reverse lookup to perform.
- */
- static char *reverse_pkey;
- /**
- * Type of the record to add/remove, NULL to remove all.
- */
- static char *typestring;
- /**
- * Desired expiration time.
- */
- static char *expirationstring;
- /**
- * Desired nick name.
- */
- static char *nickstring;
- /**
- * Global return value
- */
- static int ret;
- /**
- * Type string converted to DNS type value.
- */
- static uint32_t type;
- /**
- * Value in binary format.
- */
- static void *data;
- /**
- * Number of bytes in #data.
- */
- static size_t data_size;
- /**
- * Expiration string converted to numeric value.
- */
- static uint64_t etime;
- /**
- * Is expiration time relative or absolute time?
- */
- static int etime_is_rel = GNUNET_SYSERR;
- /**
- * Monitor handle.
- */
- static struct GNUNET_NAMESTORE_ZoneMonitor *zm;
- /**
- * Enables monitor mode.
- */
- static int monitor;
- /**
- * Entry in record set for processing records in bulk.
- */
- static struct RecordSetEntry *recordset;
- /**
- * Task run on shutdown. Cleans up everything.
- *
- * @param cls unused
- */
- static void
- do_shutdown (void *cls)
- {
- (void) cls;
- if (NULL != get_default)
- {
- GNUNET_IDENTITY_cancel (get_default);
- get_default = NULL;
- }
- if (NULL != idh)
- {
- GNUNET_IDENTITY_disconnect (idh);
- idh = NULL;
- }
- if (NULL != el)
- {
- GNUNET_IDENTITY_ego_lookup_cancel (el);
- el = NULL;
- }
- if (NULL != list_it)
- {
- GNUNET_NAMESTORE_zone_iteration_stop (list_it);
- list_it = NULL;
- }
- if (NULL != add_qe)
- {
- GNUNET_NAMESTORE_cancel (add_qe);
- add_qe = NULL;
- }
- if (NULL != set_qe)
- {
- GNUNET_NAMESTORE_cancel (set_qe);
- set_qe = NULL;
- }
- if (NULL != add_qe_uri)
- {
- GNUNET_NAMESTORE_cancel (add_qe_uri);
- add_qe_uri = NULL;
- }
- if (NULL != get_qe)
- {
- GNUNET_NAMESTORE_cancel (get_qe);
- get_qe = NULL;
- }
- if (NULL != del_qe)
- {
- GNUNET_NAMESTORE_cancel (del_qe);
- del_qe = NULL;
- }
- if (NULL != ns)
- {
- GNUNET_NAMESTORE_disconnect (ns);
- ns = NULL;
- }
- memset (&zone_pkey, 0, sizeof(zone_pkey));
- if (NULL != uri)
- {
- GNUNET_free (uri);
- uri = NULL;
- }
- if (NULL != zm)
- {
- GNUNET_NAMESTORE_zone_monitor_stop (zm);
- zm = NULL;
- }
- if (NULL != data)
- {
- GNUNET_free (data);
- data = NULL;
- }
- }
- /**
- * Check if we are finished, and if so, perform shutdown.
- */
- static void
- test_finished ()
- {
- if ((NULL == add_qe) && (NULL == add_qe_uri) && (NULL == get_qe) &&
- (NULL == del_qe) && (NULL == reverse_qe) && (NULL == list_it))
- GNUNET_SCHEDULER_shutdown ();
- }
- /**
- * Continuation called to notify client about result of the
- * operation.
- *
- * @param cls closure, location of the QueueEntry pointer to NULL out
- * @param success #GNUNET_SYSERR on failure (including timeout/queue drop/failure to validate)
- * #GNUNET_NO if content was already there
- * #GNUNET_YES (or other positive value) on success
- * @param emsg NULL on success, otherwise an error message
- */
- static void
- add_continuation (void *cls, int32_t success, const char *emsg)
- {
- struct GNUNET_NAMESTORE_QueueEntry **qe = cls;
- *qe = NULL;
- if (GNUNET_YES != success)
- {
- fprintf (stderr,
- _ ("Adding record failed: %s\n"),
- (GNUNET_NO == success) ? "record exists" : emsg);
- if (GNUNET_NO != success)
- ret = 1;
- }
- ret = 0;
- test_finished ();
- }
- /**
- * Continuation called to notify client about result of the
- * operation.
- *
- * @param cls closure, unused
- * @param success #GNUNET_SYSERR on failure (including timeout/queue drop/failure to validate)
- * #GNUNET_NO if content was already there
- * #GNUNET_YES (or other positive value) on success
- * @param emsg NULL on success, otherwise an error message
- */
- static void
- del_continuation (void *cls, int32_t success, const char *emsg)
- {
- (void) cls;
- del_qe = NULL;
- if (GNUNET_NO == success)
- {
- fprintf (stderr,
- _ ("Deleting record failed, record does not exist%s%s\n"),
- (NULL != emsg) ? ": " : "",
- (NULL != emsg) ? emsg : "");
- }
- if (GNUNET_SYSERR == success)
- {
- fprintf (stderr,
- _ ("Deleting record failed%s%s\n"),
- (NULL != emsg) ? ": " : "",
- (NULL != emsg) ? emsg : "");
- }
- test_finished ();
- }
- /**
- * Function called when we are done with a zone iteration.
- */
- static void
- zone_iteration_finished (void *cls)
- {
- (void) cls;
- list_it = NULL;
- test_finished ();
- }
- /**
- * Function called when we encountered an error in a zone iteration.
- */
- static void
- zone_iteration_error_cb (void *cls)
- {
- (void) cls;
- list_it = NULL;
- fprintf (stderr, "Error iterating over zone\n");
- ret = 1;
- test_finished ();
- }
- /**
- * Process a record that was stored in the namestore.
- *
- * @param rname name that is being mapped (at most 255 characters long)
- * @param rd_len number of entries in @a rd array
- * @param rd array of records with data to store
- */
- static void
- display_record (const char *rname,
- unsigned int rd_len,
- const struct GNUNET_GNSRECORD_Data *rd)
- {
- const char *typestr;
- char *s;
- const char *ets;
- struct GNUNET_TIME_Absolute at;
- struct GNUNET_TIME_Relative rt;
- int have_record;
- if ((NULL != name) && (0 != strcmp (name, rname)))
- {
- GNUNET_NAMESTORE_zone_iterator_next (list_it, 1);
- return;
- }
- have_record = GNUNET_NO;
- for (unsigned int i = 0; i < rd_len; i++)
- {
- if ((GNUNET_GNSRECORD_TYPE_NICK == rd[i].record_type) &&
- (0 != strcmp (rname, GNUNET_GNS_EMPTY_LABEL_AT)))
- continue;
- if ((type != rd[i].record_type) && (GNUNET_GNSRECORD_TYPE_ANY != type))
- continue;
- have_record = GNUNET_YES;
- break;
- }
- if (GNUNET_NO == have_record)
- return;
- fprintf (stdout, "%s:\n", rname);
- if (NULL != typestring)
- type = GNUNET_GNSRECORD_typename_to_number (typestring);
- else
- type = GNUNET_GNSRECORD_TYPE_ANY;
- for (unsigned int i = 0; i < rd_len; i++)
- {
- if ((GNUNET_GNSRECORD_TYPE_NICK == rd[i].record_type) &&
- (0 != strcmp (rname, GNUNET_GNS_EMPTY_LABEL_AT)))
- continue;
- if ((type != rd[i].record_type) && (GNUNET_GNSRECORD_TYPE_ANY != type))
- continue;
- typestr = GNUNET_GNSRECORD_number_to_typename (rd[i].record_type);
- s = GNUNET_GNSRECORD_value_to_string (rd[i].record_type,
- rd[i].data,
- rd[i].data_size);
- if (NULL == s)
- {
- fprintf (stdout,
- _ ("\tCorrupt or unsupported record of type %u\n"),
- (unsigned int) rd[i].record_type);
- continue;
- }
- if (0 != (rd[i].flags & GNUNET_GNSRECORD_RF_RELATIVE_EXPIRATION))
- {
- rt.rel_value_us = rd[i].expiration_time;
- ets = GNUNET_STRINGS_relative_time_to_string (rt, GNUNET_YES);
- }
- else
- {
- at.abs_value_us = rd[i].expiration_time;
- ets = GNUNET_STRINGS_absolute_time_to_string (at);
- }
- fprintf (stdout,
- "\t%s: %s (%s)\t%s\t%s\n",
- typestr,
- s,
- ets,
- (0 != (rd[i].flags & GNUNET_GNSRECORD_RF_PRIVATE)) ? "PRIVATE"
- : "PUBLIC",
- (0 != (rd[i].flags & GNUNET_GNSRECORD_RF_SHADOW_RECORD)) ? "SHADOW"
- : "");
- GNUNET_free (s);
- }
- fprintf (stdout, "%s", "\n");
- }
- /**
- * Process a record that was stored in the namestore.
- *
- * @param cls closure
- * @param zone_key private key of the zone
- * @param rname name that is being mapped (at most 255 characters long)
- * @param rd_len number of entries in @a rd array
- * @param rd array of records with data to store
- */
- static void
- display_record_iterator (void *cls,
- const struct GNUNET_IDENTITY_PrivateKey *zone_key,
- const char *rname,
- unsigned int rd_len,
- const struct GNUNET_GNSRECORD_Data *rd)
- {
- (void) cls;
- (void) zone_key;
- display_record (rname, rd_len, rd);
- GNUNET_NAMESTORE_zone_iterator_next (list_it, 1);
- }
- /**
- * Process a record that was stored in the namestore.
- *
- * @param cls closure
- * @param zone_key private key of the zone
- * @param rname name that is being mapped (at most 255 characters long)
- * @param rd_len number of entries in @a rd array
- * @param rd array of records with data to store
- */
- static void
- display_record_monitor (void *cls,
- const struct GNUNET_IDENTITY_PrivateKey *zone_key,
- const char *rname,
- unsigned int rd_len,
- const struct GNUNET_GNSRECORD_Data *rd)
- {
- (void) cls;
- (void) zone_key;
- display_record (rname, rd_len, rd);
- GNUNET_NAMESTORE_zone_monitor_next (zm, 1);
- }
- /**
- * Process a record that was stored in the namestore.
- *
- * @param cls closure
- * @param zone_key private key of the zone
- * @param rname name that is being mapped (at most 255 characters long)
- * @param rd_len number of entries in @a rd array
- * @param rd array of records with data to store
- */
- static void
- display_record_lookup (void *cls,
- const struct GNUNET_IDENTITY_PrivateKey *zone_key,
- const char *rname,
- unsigned int rd_len,
- const struct GNUNET_GNSRECORD_Data *rd)
- {
- (void) cls;
- (void) zone_key;
- get_qe = NULL;
- display_record (rname, rd_len, rd);
- test_finished ();
- }
- /**
- * Function called once we are in sync in monitor mode.
- *
- * @param cls NULL
- */
- static void
- sync_cb (void *cls)
- {
- (void) cls;
- fprintf (stdout, "%s", "Monitor is now in sync.\n");
- }
- /**
- * Function called on errors while monitoring.
- *
- * @param cls NULL
- */
- static void
- monitor_error_cb (void *cls)
- {
- (void) cls;
- fprintf (stderr, "%s", "Monitor disconnected and out of sync.\n");
- }
- /**
- * Function called on errors while monitoring.
- *
- * @param cls NULL
- */
- static void
- lookup_error_cb (void *cls)
- {
- (void) cls;
- get_qe = NULL;
- fprintf (stderr, "%s", "Failed to lookup record.\n");
- test_finished ();
- }
- /**
- * Function called if lookup fails.
- */
- static void
- add_error_cb (void *cls)
- {
- (void) cls;
- add_qe = NULL;
- GNUNET_break (0);
- ret = 1;
- test_finished ();
- }
- /**
- * We're storing a record; this function is given the existing record
- * so that we can merge the information.
- *
- * @param cls closure, unused
- * @param zone_key private key of the zone
- * @param rec_name name that is being mapped (at most 255 characters long)
- * @param rd_count number of entries in @a rd array
- * @param rd array of records with data to store
- */
- static void
- get_existing_record (void *cls,
- const struct GNUNET_IDENTITY_PrivateKey *zone_key,
- const char *rec_name,
- unsigned int rd_count,
- const struct GNUNET_GNSRECORD_Data *rd)
- {
- struct GNUNET_GNSRECORD_Data rdn[rd_count + 1];
- struct GNUNET_GNSRECORD_Data *rde;
- (void) cls;
- (void) zone_key;
- add_qe = NULL;
- if (0 != strcmp (rec_name, name))
- {
- GNUNET_break (0);
- ret = 1;
- test_finished ();
- return;
- }
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Received %u records for name `%s'\n",
- rd_count,
- rec_name);
- for (unsigned int i = 0; i < rd_count; i++)
- {
- switch (rd[i].record_type)
- {
- case GNUNET_DNSPARSER_TYPE_CNAME:
- fprintf (
- stderr,
- _ (
- "A %s record exists already under `%s', no other records can be added.\n"),
- "CNAME",
- rec_name);
- ret = 1;
- test_finished ();
- return;
- case GNUNET_GNSRECORD_TYPE_PKEY:
- case GNUNET_GNSRECORD_TYPE_EDKEY:
- fprintf (
- stderr,
- _ (
- "A zone key record exists already under `%s', no other records can be added.\n"),
- rec_name);
- ret = 1;
- test_finished ();
- return;
- case GNUNET_DNSPARSER_TYPE_SOA:
- if (GNUNET_DNSPARSER_TYPE_SOA == type)
- {
- fprintf (
- stderr,
- _ (
- "A SOA record exists already under `%s', cannot add a second SOA to the same zone.\n"),
- rec_name);
- ret = 1;
- test_finished ();
- return;
- }
- break;
- }
- }
- switch (type)
- {
- case GNUNET_DNSPARSER_TYPE_CNAME:
- if (0 != rd_count)
- {
- fprintf (stderr,
- _ (
- "Records already exist under `%s', cannot add `%s' record.\n"),
- rec_name,
- "CNAME");
- ret = 1;
- test_finished ();
- return;
- }
- break;
- case GNUNET_GNSRECORD_TYPE_PKEY:
- case GNUNET_GNSRECORD_TYPE_EDKEY:
- if (0 != rd_count)
- {
- fprintf (stderr,
- _ (
- "Records already exist under `%s', cannot add record.\n"),
- rec_name);
- ret = 1;
- test_finished ();
- return;
- }
- break;
- case GNUNET_GNSRECORD_TYPE_GNS2DNS:
- for (unsigned int i = 0; i < rd_count; i++)
- if (GNUNET_GNSRECORD_TYPE_GNS2DNS != rd[i].record_type)
- {
- fprintf (
- stderr,
- _ (
- "Non-GNS2DNS records already exist under `%s', cannot add GNS2DNS record.\n"),
- rec_name);
- ret = 1;
- test_finished ();
- return;
- }
- break;
- }
- memset (rdn, 0, sizeof(struct GNUNET_GNSRECORD_Data));
- GNUNET_memcpy (&rdn[1], rd, rd_count * sizeof(struct GNUNET_GNSRECORD_Data));
- rde = &rdn[0];
- rde->data = data;
- rde->data_size = data_size;
- rde->record_type = type;
- if (1 == is_shadow)
- rde->flags |= GNUNET_GNSRECORD_RF_SHADOW_RECORD;
- if (1 != is_public)
- rde->flags |= GNUNET_GNSRECORD_RF_PRIVATE;
- rde->expiration_time = etime;
- if (GNUNET_YES == etime_is_rel)
- rde->flags |= GNUNET_GNSRECORD_RF_RELATIVE_EXPIRATION;
- else if (GNUNET_NO != etime_is_rel)
- rde->expiration_time = GNUNET_TIME_UNIT_FOREVER_ABS.abs_value_us;
- GNUNET_assert (NULL != name);
- add_qe = GNUNET_NAMESTORE_records_store (ns,
- &zone_pkey,
- name,
- rd_count + 1,
- rde,
- &add_continuation,
- &add_qe);
- }
- /**
- * Function called if we encountered an error in zone-to-name.
- */
- static void
- reverse_error_cb (void *cls)
- {
- (void) cls;
- reverse_qe = NULL;
- fprintf (stdout, "%s.zkey\n", reverse_pkey);
- }
- /**
- * Function called with the result of our attempt to obtain a name for a given
- * public key.
- *
- * @param cls NULL
- * @param zone private key of the zone; NULL on disconnect
- * @param label label of the records; NULL on disconnect
- * @param rd_count number of entries in @a rd array, 0 if label was deleted
- * @param rd array of records with data to store
- */
- static void
- handle_reverse_lookup (void *cls,
- const struct GNUNET_IDENTITY_PrivateKey *zone,
- const char *label,
- unsigned int rd_count,
- const struct GNUNET_GNSRECORD_Data *rd)
- {
- (void) cls;
- (void) zone;
- (void) rd_count;
- (void) rd;
- reverse_qe = NULL;
- if (NULL == label)
- fprintf (stdout, "%s\n", reverse_pkey);
- else
- fprintf (stdout, "%s.%s\n", label, ego_name);
- test_finished ();
- }
- /**
- * Function called if lookup for deletion fails.
- */
- static void
- del_lookup_error_cb (void *cls)
- {
- (void) cls;
- del_qe = NULL;
- GNUNET_break (0);
- ret = 1;
- test_finished ();
- }
- /**
- * We were asked to delete something; this function is called with
- * the existing records. Now we should determine what should be
- * deleted and then issue the deletion operation.
- *
- * @param cls NULL
- * @param zone private key of the zone we are deleting from
- * @param label name of the records we are editing
- * @param rd_count size of the @a rd array
- * @param rd existing records
- */
- static void
- del_monitor (void *cls,
- const struct GNUNET_IDENTITY_PrivateKey *zone,
- const char *label,
- unsigned int rd_count,
- const struct GNUNET_GNSRECORD_Data *rd)
- {
- struct GNUNET_GNSRECORD_Data rdx[rd_count];
- unsigned int rd_left;
- uint32_t type;
- char *vs;
- (void) cls;
- (void) zone;
- del_qe = NULL;
- if (0 == rd_count)
- {
- fprintf (stderr,
- _ (
- "There are no records under label `%s' that could be deleted.\n"),
- label);
- ret = 1;
- test_finished ();
- return;
- }
- if ((NULL == value) && (NULL == typestring))
- {
- /* delete everything */
- del_qe = GNUNET_NAMESTORE_records_store (ns,
- &zone_pkey,
- name,
- 0,
- NULL,
- &del_continuation,
- NULL);
- return;
- }
- rd_left = 0;
- if (NULL != typestring)
- type = GNUNET_GNSRECORD_typename_to_number (typestring);
- else
- type = GNUNET_GNSRECORD_TYPE_ANY;
- for (unsigned int i = 0; i < rd_count; i++)
- {
- vs = NULL;
- if (! (((GNUNET_GNSRECORD_TYPE_ANY == type) ||
- (rd[i].record_type == type)) &&
- ((NULL == value) ||
- (NULL ==
- (vs = (GNUNET_GNSRECORD_value_to_string (rd[i].record_type,
- rd[i].data,
- rd[i].data_size)))) ||
- (0 == strcmp (vs, value)))))
- rdx[rd_left++] = rd[i];
- GNUNET_free (vs);
- }
- if (rd_count == rd_left)
- {
- /* nothing got deleted */
- fprintf (
- stderr,
- _ (
- "There are no records under label `%s' that match the request for deletion.\n"),
- label);
- test_finished ();
- return;
- }
- /* delete everything but what we copied to 'rdx' */
- del_qe = GNUNET_NAMESTORE_records_store (ns,
- &zone_pkey,
- name,
- rd_left,
- rdx,
- &del_continuation,
- NULL);
- }
- /**
- * Parse expiration time.
- *
- * @param expirationstring text to parse
- * @param etime_is_rel[out] set to #GNUNET_YES if time is relative
- * @param etime[out] set to expiration time (abs or rel)
- * @return #GNUNET_OK on success
- */
- static int
- parse_expiration (const char *expirationstring,
- int *etime_is_rel,
- uint64_t *etime)
- {
- struct GNUNET_TIME_Relative etime_rel;
- struct GNUNET_TIME_Absolute etime_abs;
- if (0 == strcmp (expirationstring, "never"))
- {
- *etime = GNUNET_TIME_UNIT_FOREVER_ABS.abs_value_us;
- *etime_is_rel = GNUNET_NO;
- return GNUNET_OK;
- }
- if (GNUNET_OK ==
- GNUNET_STRINGS_fancy_time_to_relative (expirationstring, &etime_rel))
- {
- *etime_is_rel = GNUNET_YES;
- *etime = etime_rel.rel_value_us;
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Storing record with relative expiration time of %s\n",
- GNUNET_STRINGS_relative_time_to_string (etime_rel, GNUNET_NO));
- return GNUNET_OK;
- }
- if (GNUNET_OK ==
- GNUNET_STRINGS_fancy_time_to_absolute (expirationstring, &etime_abs))
- {
- *etime_is_rel = GNUNET_NO;
- *etime = etime_abs.abs_value_us;
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Storing record with absolute expiration time of %s\n",
- GNUNET_STRINGS_absolute_time_to_string (etime_abs));
- return GNUNET_OK;
- }
- return GNUNET_SYSERR;
- }
- /**
- * Function called when namestore is done with the replace
- * operation.
- *
- * @param cls NULL
- * @param success #GNUNET_SYSERR on failure (including timeout/queue drop/failure to validate)
- * #GNUNET_NO if content was already there or not found
- * #GNUNET_YES (or other positive value) on success
- * @param emsg NULL on success, otherwise an error message
- */
- static void
- replace_cont (void *cls, int success, const char *emsg)
- {
- (void) cls;
- set_qe = NULL;
- if (GNUNET_OK != success)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_MESSAGE,
- _ ("Failed to replace records: %s\n"),
- emsg);
- ret = 1; /* fail from 'main' */
- }
- GNUNET_SCHEDULER_shutdown ();
- }
- /**
- * We have obtained the zone's private key, so now process
- * the main commands using it.
- *
- * @param cfg configuration to use
- */
- static void
- run_with_zone_pkey (const struct GNUNET_CONFIGURATION_Handle *cfg)
- {
- struct GNUNET_GNSRECORD_Data rd;
- if (! (add | del | list | (NULL != nickstring) | (NULL != uri)
- | (NULL != reverse_pkey) | (NULL != recordset)))
- {
- /* nothing more to be done */
- fprintf (stderr, _ ("No options given\n"));
- GNUNET_SCHEDULER_shutdown ();
- return;
- }
- ns = GNUNET_NAMESTORE_connect (cfg);
- if (NULL == ns)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _ ("Failed to connect to namestore\n"));
- return;
- }
- if (NULL != recordset)
- {
- /* replace entire record set */
- unsigned int rd_count;
- struct GNUNET_GNSRECORD_Data *rd;
- if (NULL == name)
- {
- fprintf (stderr,
- _ ("Missing option `%s' for operation `%s'\n"),
- "-R",
- _ ("replace"));
- GNUNET_SCHEDULER_shutdown ();
- ret = 1;
- return;
- }
- rd_count = 0;
- for (struct RecordSetEntry *e = recordset; NULL != e; e = e->next)
- rd_count++;
- rd = GNUNET_new_array (rd_count, struct GNUNET_GNSRECORD_Data);
- rd_count = 0;
- for (struct RecordSetEntry *e = recordset; NULL != e; e = e->next)
- {
- rd[rd_count] = e->record;
- rd_count++;
- }
- set_qe = GNUNET_NAMESTORE_records_store (ns,
- &zone_pkey,
- name,
- rd_count,
- rd,
- &replace_cont,
- NULL);
- GNUNET_free (rd);
- return;
- }
- if (NULL != nickstring)
- {
- if (0 == strlen (nickstring))
- {
- fprintf (stderr, _ ("Invalid nick `%s'\n"), nickstring);
- GNUNET_SCHEDULER_shutdown ();
- ret = 1;
- return;
- }
- add = 1;
- typestring = GNUNET_strdup (GNUNET_GNSRECORD_number_to_typename (
- GNUNET_GNSRECORD_TYPE_NICK));
- name = GNUNET_strdup (GNUNET_GNS_EMPTY_LABEL_AT);
- value = GNUNET_strdup (nickstring);
- is_public = 0;
- expirationstring = GNUNET_strdup ("never");
- GNUNET_free (nickstring);
- nickstring = NULL;
- }
- if (add)
- {
- if (NULL == name)
- {
- fprintf (stderr,
- _ ("Missing option `%s' for operation `%s'\n"),
- "-n",
- _ ("add"));
- GNUNET_SCHEDULER_shutdown ();
- ret = 1;
- return;
- }
- if (NULL == typestring)
- {
- fprintf (stderr,
- _ ("Missing option `%s' for operation `%s'\n"),
- "-t",
- _ ("add"));
- GNUNET_SCHEDULER_shutdown ();
- ret = 1;
- return;
- }
- type = GNUNET_GNSRECORD_typename_to_number (typestring);
- if (UINT32_MAX == type)
- {
- fprintf (stderr, _ ("Unsupported type `%s'\n"), typestring);
- GNUNET_SCHEDULER_shutdown ();
- ret = 1;
- return;
- }
- if ((GNUNET_DNSPARSER_TYPE_SRV == type) ||
- (GNUNET_DNSPARSER_TYPE_TLSA == type) ||
- (GNUNET_DNSPARSER_TYPE_OPENPGPKEY == type))
- {
- fprintf (stderr,
- _ ("For DNS record types `SRV', `TLSA' and `OPENPGPKEY'"));
- fprintf (stderr, ", please use a `BOX' record instead\n");
- GNUNET_SCHEDULER_shutdown ();
- ret = 1;
- return;
- }
- if (NULL == value)
- {
- fprintf (stderr,
- _ ("Missing option `%s' for operation `%s'\n"),
- "-V",
- _ ("add"));
- ret = 1;
- GNUNET_SCHEDULER_shutdown ();
- return;
- }
- if (GNUNET_OK !=
- GNUNET_GNSRECORD_string_to_value (type, value, &data, &data_size))
- {
- fprintf (stderr,
- _ ("Value `%s' invalid for record type `%s'\n"),
- value,
- typestring);
- GNUNET_SCHEDULER_shutdown ();
- ret = 1;
- return;
- }
- if (NULL == expirationstring)
- {
- fprintf (stderr,
- _ ("Missing option `%s' for operation `%s'\n"),
- "-e",
- _ ("add"));
- GNUNET_SCHEDULER_shutdown ();
- ret = 1;
- return;
- }
- if (GNUNET_OK != parse_expiration (expirationstring, &etime_is_rel, &etime))
- {
- fprintf (stderr, _ ("Invalid time format `%s'\n"), expirationstring);
- GNUNET_SCHEDULER_shutdown ();
- ret = 1;
- return;
- }
- add_qe = GNUNET_NAMESTORE_records_lookup (ns,
- &zone_pkey,
- name,
- &add_error_cb,
- NULL,
- &get_existing_record,
- NULL);
- }
- if (del)
- {
- if (NULL == name)
- {
- fprintf (stderr,
- _ ("Missing option `%s' for operation `%s'\n"),
- "-n",
- _ ("del"));
- GNUNET_SCHEDULER_shutdown ();
- ret = 1;
- return;
- }
- del_qe = GNUNET_NAMESTORE_records_lookup (ns,
- &zone_pkey,
- name,
- &del_lookup_error_cb,
- NULL,
- &del_monitor,
- NULL);
- }
- if (list)
- {
- if (NULL != name)
- get_qe = GNUNET_NAMESTORE_records_lookup (ns,
- &zone_pkey,
- name,
- &lookup_error_cb,
- NULL,
- &display_record_lookup,
- NULL);
- else
- list_it = GNUNET_NAMESTORE_zone_iteration_start (ns,
- &zone_pkey,
- &zone_iteration_error_cb,
- NULL,
- &display_record_iterator,
- NULL,
- &zone_iteration_finished,
- NULL);
- }
- if (NULL != reverse_pkey)
- {
- struct GNUNET_IDENTITY_PublicKey pubkey;
- if (GNUNET_OK !=
- GNUNET_IDENTITY_public_key_from_string (reverse_pkey,
- &pubkey))
- {
- fprintf (stderr,
- _ ("Invalid public key for reverse lookup `%s'\n"),
- reverse_pkey);
- GNUNET_SCHEDULER_shutdown ();
- }
- reverse_qe = GNUNET_NAMESTORE_zone_to_name (ns,
- &zone_pkey,
- &pubkey,
- &reverse_error_cb,
- NULL,
- &handle_reverse_lookup,
- NULL);
- }
- if (NULL != uri)
- {
- char sh[105];
- char sname[64];
- struct GNUNET_IDENTITY_PublicKey pkey;
- GNUNET_STRINGS_utf8_tolower (uri, uri);
- if ((2 != (sscanf (uri, "gnunet://gns/%52s/%63s", sh, sname))) ||
- (GNUNET_OK !=
- GNUNET_IDENTITY_public_key_from_string (sh, &pkey)))
- {
- fprintf (stderr, _ ("Invalid URI `%s'\n"), uri);
- GNUNET_SCHEDULER_shutdown ();
- ret = 1;
- return;
- }
- if (NULL == expirationstring)
- {
- fprintf (stderr,
- _ ("Missing option `%s' for operation `%s'\n"),
- "-e",
- _ ("add"));
- GNUNET_SCHEDULER_shutdown ();
- ret = 1;
- return;
- }
- if (GNUNET_OK != parse_expiration (expirationstring, &etime_is_rel, &etime))
- {
- fprintf (stderr, _ ("Invalid time format `%s'\n"), expirationstring);
- GNUNET_SCHEDULER_shutdown ();
- ret = 1;
- return;
- }
- memset (&rd, 0, sizeof(rd));
- rd.data = &pkey;
- rd.data_size = GNUNET_IDENTITY_key_get_length (&pkey);
- rd.record_type = ntohl (pkey.type);
- rd.expiration_time = etime;
- if (GNUNET_YES == etime_is_rel)
- rd.flags |= GNUNET_GNSRECORD_RF_RELATIVE_EXPIRATION;
- if (1 == is_shadow)
- rd.flags |= GNUNET_GNSRECORD_RF_SHADOW_RECORD;
- add_qe_uri = GNUNET_NAMESTORE_records_store (ns,
- &zone_pkey,
- sname,
- 1,
- &rd,
- &add_continuation,
- &add_qe_uri);
- }
- if (monitor)
- {
- zm = GNUNET_NAMESTORE_zone_monitor_start (cfg,
- &zone_pkey,
- GNUNET_YES,
- &monitor_error_cb,
- NULL,
- &display_record_monitor,
- NULL,
- &sync_cb,
- NULL);
- }
- }
- /**
- * Callback invoked from identity service with ego information.
- * An @a ego of NULL means the ego was not found.
- *
- * @param cls closure with the configuration
- * @param ego an ego known to identity service, or NULL
- */
- static void
- identity_cb (void *cls, struct GNUNET_IDENTITY_Ego *ego)
- {
- const struct GNUNET_CONFIGURATION_Handle *cfg = cls;
- el = NULL;
- if ((NULL != name) && (0 != strchr (name, '.')))
- {
- fprintf (stderr,
- _ ("Label `%s' contains `.' which is not allowed\n"),
- name);
- GNUNET_SCHEDULER_shutdown ();
- ret = -1;
- return;
- }
- if (NULL == ego)
- {
- if (NULL != ego_name)
- {
- fprintf (stderr,
- _ ("Ego `%s' not known to identity service\n"),
- ego_name);
- }
- GNUNET_SCHEDULER_shutdown ();
- ret = -1;
- return;
- }
- zone_pkey = *GNUNET_IDENTITY_ego_get_private_key (ego);
- GNUNET_free (ego_name);
- ego_name = NULL;
- run_with_zone_pkey (cfg);
- }
- /**
- * Function called with the default ego to be used for GNS
- * operations. Used if the user did not specify a zone via
- * command-line or environment variables.
- *
- * @param cls NULL
- * @param ego default ego, NULL for none
- * @param ctx NULL
- * @param name unused
- */
- static void
- default_ego_cb (void *cls,
- struct GNUNET_IDENTITY_Ego *ego,
- void **ctx,
- const char *name)
- {
- const struct GNUNET_CONFIGURATION_Handle *cfg = cls;
- (void) ctx;
- (void) name;
- get_default = NULL;
- if (NULL == ego)
- {
- fprintf (stderr,
- _ ("No default identity configured for `namestore' subsystem\n"
- "Run gnunet-identity -s namestore -e $NAME to set the default to $NAME\n"
- "Run gnunet-identity -d to get a list of choices for $NAME\n"));
- GNUNET_SCHEDULER_shutdown ();
- ret = -1;
- return;
- }
- else
- {
- identity_cb ((void *) cfg, ego);
- }
- }
- /**
- * Function called with ALL of the egos known to the
- * identity service, used on startup if the user did
- * not specify a zone on the command-line.
- * Once the iteration is done (@a ego is NULL), we
- * ask for the default ego for "namestore".
- *
- * @param cls a `struct GNUNET_CONFIGURATION_Handle`
- * @param ego an ego, NULL for end of iteration
- * @param ctx NULL
- * @param name name associated with @a ego
- */
- static void
- id_connect_cb (void *cls,
- struct GNUNET_IDENTITY_Ego *ego,
- void **ctx,
- const char *name)
- {
- const struct GNUNET_CONFIGURATION_Handle *cfg = cls;
- (void) ctx;
- (void) name;
- if (NULL != ego)
- return;
- get_default =
- GNUNET_IDENTITY_get (idh, "namestore", &default_ego_cb, (void *) cfg);
- }
- /**
- * Main function that will be run.
- *
- * @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)
- {
- const char *pkey_str;
- (void) cls;
- (void) args;
- (void) cfgfile;
- if (NULL != args[0])
- GNUNET_log (
- GNUNET_ERROR_TYPE_WARNING,
- _ ("Superfluous command line arguments (starting with `%s') ignored\n"),
- args[0]);
- if ((NULL != args[0]) && (NULL == uri))
- uri = GNUNET_strdup (args[0]);
- GNUNET_SCHEDULER_add_shutdown (&do_shutdown, (void *) cfg);
- pkey_str = getenv ("GNUNET_NAMESTORE_EGO_PRIVATE_KEY");
- if (NULL != pkey_str)
- {
- if (GNUNET_OK != GNUNET_STRINGS_string_to_data (pkey_str,
- strlen (pkey_str),
- &zone_pkey,
- sizeof(zone_pkey)))
- {
- fprintf (stderr,
- "Malformed private key `%s' in $%s\n",
- pkey_str,
- "GNUNET_NAMESTORE_EGO_PRIVATE_KEY");
- ret = 1;
- GNUNET_SCHEDULER_shutdown ();
- return;
- }
- run_with_zone_pkey (cfg);
- return;
- }
- if (NULL == ego_name)
- {
- idh = GNUNET_IDENTITY_connect (cfg, &id_connect_cb, (void *) cfg);
- if (NULL == idh)
- fprintf (stderr, _ ("Cannot connect to identity service\n"));
- ret = -1;
- return;
- }
- el = GNUNET_IDENTITY_ego_lookup (cfg, ego_name, &identity_cb, (void *) cfg);
- }
- /**
- * Command-line option parser function that allows the user to specify
- * a complete record as one argument for adding/removing. A pointer
- * to the head of the list of record sets must be passed as the "scls"
- * argument.
- *
- * @param ctx command line processor context
- * @param scls must be of type "struct GNUNET_FS_Uri **"
- * @param option name of the option (typically 'R')
- * @param value command line argument given; format is
- * "TTL TYPE FLAGS VALUE" where TTL is an expiration time (rel or abs),
- * always given in seconds (without the unit),
- * TYPE is a DNS/GNS record type, FLAGS is either "n" for no flags or
- * a combination of 's' (shadow) and 'p' (public) and VALUE is the
- * value (in human-readable format)
- * @return #GNUNET_OK on success
- */
- static int
- multirecord_process (struct GNUNET_GETOPT_CommandLineProcessorContext *ctx,
- void *scls,
- const char *option,
- const char *value)
- {
- struct RecordSetEntry **head = scls;
- struct RecordSetEntry *r;
- struct GNUNET_GNSRECORD_Data record;
- char *cp;
- char *tok;
- char *saveptr;
- int etime_is_rel;
- void *raw_data;
- (void) ctx;
- (void) option;
- cp = GNUNET_strdup (value);
- tok = strtok_r (cp, " ", &saveptr);
- if (NULL == tok)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _ ("Empty record line argument is not allowed.\n"));
- GNUNET_free (cp);
- return GNUNET_SYSERR;
- }
- {
- char *etime_in_s;
- GNUNET_asprintf (&etime_in_s, "%s s", tok);
- if (GNUNET_OK !=
- parse_expiration (etime_in_s, &etime_is_rel, &record.expiration_time))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _ ("Invalid expiration time `%s' (must be without unit)\n"),
- tok);
- GNUNET_free (cp);
- GNUNET_free (etime_in_s);
- return GNUNET_SYSERR;
- }
- GNUNET_free (etime_in_s);
- }
- tok = strtok_r (NULL, " ", &saveptr);
- if (NULL == tok)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _ ("Missing entries in record line `%s'.\n"),
- value);
- GNUNET_free (cp);
- return GNUNET_SYSERR;
- }
- record.record_type = GNUNET_GNSRECORD_typename_to_number (tok);
- if (UINT32_MAX == record.record_type)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _ ("Unknown record type `%s'\n"), tok);
- GNUNET_free (cp);
- return GNUNET_SYSERR;
- }
- tok = strtok_r (NULL, " ", &saveptr);
- if (NULL == tok)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _ ("Missing entries in record line `%s'.\n"),
- value);
- GNUNET_free (cp);
- return GNUNET_SYSERR;
- }
- record.flags = GNUNET_GNSRECORD_RF_NONE;
- if (etime_is_rel)
- record.flags |= GNUNET_GNSRECORD_RF_RELATIVE_EXPIRATION;
- if (NULL == strchr (tok, (unsigned char) 'p')) /* p = public */
- record.flags |= GNUNET_GNSRECORD_RF_PRIVATE;
- if (NULL != strchr (tok, (unsigned char) 's'))
- record.flags |= GNUNET_GNSRECORD_RF_SHADOW_RECORD;
- /* find beginning of record value */
- tok = strchr (&value[tok - cp], (unsigned char) ' ');
- if (NULL == tok)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _ ("Missing entries in record line `%s'.\n"),
- value);
- GNUNET_free (cp);
- return GNUNET_SYSERR;
- }
- GNUNET_free (cp);
- tok++; /* skip space */
- if (GNUNET_OK != GNUNET_GNSRECORD_string_to_value (record.record_type,
- tok,
- &raw_data,
- &record.data_size))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _ ("Invalid record data for type %s: `%s'.\n"),
- GNUNET_GNSRECORD_number_to_typename (record.record_type),
- tok);
- return GNUNET_SYSERR;
- }
- r = GNUNET_malloc (sizeof(struct RecordSetEntry) + record.data_size);
- r->next = *head;
- record.data = &r[1];
- memcpy (&r[1], raw_data, record.data_size);
- GNUNET_free (raw_data);
- r->record = record;
- *head = r;
- return GNUNET_OK;
- }
- /**
- * Allow user to specify keywords.
- *
- * @param shortName short name of the option
- * @param name long name of the option
- * @param argumentHelp help text for the option argument
- * @param description long help text for the option
- * @param[out] topKeywords set to the desired value
- */
- struct GNUNET_GETOPT_CommandLineOption
- multirecord_option (char shortName,
- const char *name,
- const char *argumentHelp,
- const char *description,
- struct RecordSetEntry **rs)
- {
- struct GNUNET_GETOPT_CommandLineOption clo = { .shortName = shortName,
- .name = name,
- .argumentHelp = argumentHelp,
- .description = description,
- .require_argument = 1,
- .processor =
- &multirecord_process,
- .scls = (void *) rs };
- return clo;
- }
- /**
- * The main function for gnunet-namestore.
- *
- * @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_flag ('a', "add", gettext_noop ("add record"), &add),
- GNUNET_GETOPT_option_flag ('d',
- "delete",
- gettext_noop ("delete record"),
- &del),
- GNUNET_GETOPT_option_flag ('D',
- "display",
- gettext_noop ("display records"),
- &list),
- GNUNET_GETOPT_option_string (
- 'e',
- "expiration",
- "TIME",
- gettext_noop (
- "expiration time for record to use (for adding only), \"never\" is possible"),
- &expirationstring),
- GNUNET_GETOPT_option_string ('i',
- "nick",
- "NICKNAME",
- gettext_noop (
- "set the desired nick name for the zone"),
- &nickstring),
- GNUNET_GETOPT_option_flag ('m',
- "monitor",
- gettext_noop (
- "monitor changes in the namestore"),
- &monitor),
- GNUNET_GETOPT_option_string ('n',
- "name",
- "NAME",
- gettext_noop (
- "name of the record to add/delete/display"),
- &name),
- GNUNET_GETOPT_option_string ('r',
- "reverse",
- "PKEY",
- gettext_noop (
- "determine our name for the given PKEY"),
- &reverse_pkey),
- multirecord_option (
- 'R',
- "replace",
- "RECORDLINE",
- gettext_noop (
- "set record set to values given by (possibly multiple) RECORDLINES; can be specified multiple times"),
- &recordset),
- GNUNET_GETOPT_option_string ('t',
- "type",
- "TYPE",
- gettext_noop (
- "type of the record to add/delete/display"),
- &typestring),
- GNUNET_GETOPT_option_string ('u',
- "uri",
- "URI",
- gettext_noop ("URI to import into our zone"),
- &uri),
- GNUNET_GETOPT_option_string ('V',
- "value",
- "VALUE",
- gettext_noop (
- "value of the record to add/delete"),
- &value),
- GNUNET_GETOPT_option_flag ('p',
- "public",
- gettext_noop ("create or list public record"),
- &is_public),
- GNUNET_GETOPT_option_flag (
- 's',
- "shadow",
- gettext_noop (
- "create shadow record (only valid if all other records of the same type have expired"),
- &is_shadow),
- GNUNET_GETOPT_option_string ('z',
- "zone",
- "EGO",
- gettext_noop (
- "name of the ego controlling the zone"),
- &ego_name),
- GNUNET_GETOPT_OPTION_END };
- int lret;
- if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
- return 2;
- is_public = -1;
- is_shadow = -1;
- GNUNET_log_setup ("gnunet-namestore", "WARNING", NULL);
- if (GNUNET_OK !=
- (lret = GNUNET_PROGRAM_run (argc,
- argv,
- "gnunet-namestore",
- _ ("GNUnet zone manipulation tool"),
- options,
- &run,
- NULL)))
- {
- GNUNET_free_nz ((void *) argv);
- //FIXME
- //GNUNET_CRYPTO_ecdsa_key_clear (&zone_pkey);
- return lret;
- }
- GNUNET_free_nz ((void *) argv);
- //FIXME
- //GNUNET_CRYPTO_ecdsa_key_clear (&zone_pkey);
- return ret;
- }
- /* end of gnunet-namestore.c */
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