/*
This file is part of GNUnet.
- (C) 2013 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2013 GNUnet e.V.
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
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.
+ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
*/
/**
* @file regex/gnunet-service-regex.c
- * @brief program that tracks template
+ * @brief service to advertise capabilities described as regex and to
+ * lookup capabilities by regex
* @author Christian Grothoff
*/
#include "platform.h"
#include "gnunet_util_lib.h"
-#include "gnunet_regex_lib.h"
+#include "regex_internal_lib.h"
#include "regex_ipc.h"
/**
* Search handle (if this client is searching).
*/
- struct GNUNET_REGEX_search_handle *sh;
+ struct REGEX_INTERNAL_Search *sh;
/**
* Announcement handle (if this client is announcing).
*/
- struct GNUNET_REGEX_announce_handle *ah;
+ struct REGEX_INTERNAL_Announcement *ah;
/**
* Refresh frequency for announcements.
/**
* Task for re-announcing.
*/
- GNUNET_SCHEDULER_TaskIdentifier refresh_task;
+ struct GNUNET_SCHEDULER_Task * refresh_task;
};
*/
static struct ClientEntry *client_tail;
+/**
+ * Our notification context, used to send back results to the client.
+ */
+static struct GNUNET_SERVER_NotificationContext *nc;
/**
- * Task run during shutdown.
- *
- * @param cls unused
- * @param tc unused
+ * Private key for this peer.
*/
-static void
-cleanup_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
- GNUNET_DHT_disconnect (dht);
- dht = NULL;
- GNUNET_STATISTICS_destroy (stats, GNUNET_NO);
- stats = NULL;
-}
+static struct GNUNET_CRYPTO_EddsaPrivateKey *my_private_key;
/**
* @param client identification of the client
*/
static void
-handle_client_disconnect (void *cls, struct GNUNET_SERVER_Client *client)
+handle_client_disconnect (void *cls,
+ struct GNUNET_SERVER_Client *client)
{
struct ClientEntry *ce;
struct ClientEntry *nx;
nx = ce->next;
if (ce->client == client)
{
- if (GNUNET_SCHEDULER_NO_TASK != ce->refresh_task)
+ if (NULL != ce->refresh_task)
{
GNUNET_SCHEDULER_cancel (ce->refresh_task);
- ce->refresh_task = GNUNET_SCHEDULER_NO_TASK;
+ ce->refresh_task = NULL;
}
if (NULL != ce->ah)
{
- GNUNET_REGEX_announce_cancel (ce->ah);
+ REGEX_INTERNAL_announce_cancel (ce->ah);
ce->ah = NULL;
}
if (NULL != ce->sh)
{
- GNUNET_REGEX_search_cancel (ce->sh);
+ REGEX_INTERNAL_search_cancel (ce->sh);
ce->sh = NULL;
}
- GNUNET_CONTAINER_DLL_remove (client_head, client_tail, ce);
+ GNUNET_CONTAINER_DLL_remove (client_head,
+ client_tail,
+ ce);
GNUNET_free (ce);
}
}
}
+/**
+ * Task run during shutdown.
+ *
+ * @param cls unused
+ */
+static void
+cleanup_task (void *cls)
+{
+ struct ClientEntry *ce;
+
+ while (NULL != (ce = client_head))
+ handle_client_disconnect (NULL,
+ ce->client);
+ GNUNET_DHT_disconnect (dht);
+ dht = NULL;
+ GNUNET_STATISTICS_destroy (stats, GNUNET_NO);
+ stats = NULL;
+ GNUNET_SERVER_notification_context_destroy (nc);
+ nc = NULL;
+ GNUNET_free (my_private_key);
+ my_private_key = NULL;
+}
+
+
/**
* Periodic task to refresh our announcement of the regex.
*
- * @param cls the 'struct ClientEntry' of the client that triggered the
+ * @param cls the `struct ClientEntry *` of the client that triggered the
* announcement
- * @param tc scheduler context
*/
static void
-reannounce (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
+reannounce (void *cls)
{
struct ClientEntry *ce = cls;
- GNUNET_REGEX_reannounce (ce->ah);
+ REGEX_INTERNAL_reannounce (ce->ah);
ce->refresh_task = GNUNET_SCHEDULER_add_delayed (ce->frequency,
&reannounce,
ce);
* @param message the actual message
*/
static void
-handle_announce (void *cls,
+handle_announce (void *cls,
struct GNUNET_SERVER_Client *client,
const struct GNUNET_MessageHeader *message)
{
GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
return;
}
+
ce = GNUNET_new (struct ClientEntry);
ce->client = client;
- ce->ah = GNUNET_REGEX_announce (dht,
- &am->pid,
- regex,
- ntohs (am->compression),
- stats);
+ ce->frequency = GNUNET_TIME_relative_ntoh (am->refresh_delay);
+ ce->refresh_task = GNUNET_SCHEDULER_add_delayed (ce->frequency,
+ &reannounce,
+ ce);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Starting to announce regex `%s' every %s\n",
+ regex,
+ GNUNET_STRINGS_relative_time_to_string (ce->frequency,
+ GNUNET_NO));
+ ce->ah = REGEX_INTERNAL_announce (dht,
+ my_private_key,
+ regex,
+ ntohs (am->compression),
+ stats);
if (NULL == ce->ah)
{
GNUNET_break (0);
+ GNUNET_SCHEDULER_cancel (ce->refresh_task);
GNUNET_free (ce);
GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
return;
}
- ce->frequency = GNUNET_TIME_relative_ntoh (am->refresh_delay);
- ce->refresh_task = GNUNET_SCHEDULER_add_delayed (ce->frequency,
- &reannounce,
- ce);
GNUNET_CONTAINER_DLL_insert (client_head,
- client_tail,
+ client_tail,
ce);
GNUNET_SERVER_receive_done (client, GNUNET_OK);
}
* @param cls the struct ClientEntry of the client searching
* @param id Peer providing a regex that matches the string.
* @param get_path Path of the get request.
- * @param get_path_length Lenght of get_path.
+ * @param get_path_length Lenght of @a get_path.
* @param put_path Path of the put request.
- * @param put_path_length Length of the put_path.
+ * @param put_path_length Length of the @a put_path.
*/
-static void
+static void
handle_search_result (void *cls,
const struct GNUNET_PeerIdentity *id,
const struct GNUNET_PeerIdentity *get_path,
const struct GNUNET_PeerIdentity *put_path,
unsigned int put_path_length)
{
+ struct ClientEntry *ce = cls;
+ struct ResultMessage *result;
+ struct GNUNET_PeerIdentity *gp;
+ uint16_t size;
+ if ( (get_path_length >= 65536) ||
+ (put_path_length >= 65536) ||
+ ( (get_path_length + put_path_length) * sizeof (struct GNUNET_PeerIdentity))
+ + sizeof (struct ResultMessage) >= GNUNET_SERVER_MAX_MESSAGE_SIZE)
+ {
+ GNUNET_break (0);
+ return;
+ }
+ size = (get_path_length + put_path_length) * sizeof (struct GNUNET_PeerIdentity) + sizeof (struct ResultMessage);
+ result = GNUNET_malloc (size);
+ result->header.size = htons (size);
+ result->header.type = htons (GNUNET_MESSAGE_TYPE_REGEX_RESULT);
+ result->get_path_length = htons ((uint16_t) get_path_length);
+ result->put_path_length = htons ((uint16_t) put_path_length);
+ result->id = *id;
+ gp = &result->id;
+ GNUNET_memcpy (&gp[1],
+ get_path,
+ get_path_length * sizeof (struct GNUNET_PeerIdentity));
+ GNUNET_memcpy (&gp[1 + get_path_length],
+ put_path,
+ put_path_length * sizeof (struct GNUNET_PeerIdentity));
+ GNUNET_SERVER_notification_context_unicast (nc,
+ ce->client,
+ &result->header, GNUNET_NO);
+ GNUNET_free (result);
}
* @param message the actual message
*/
static void
-handle_search (void *cls,
+handle_search (void *cls,
struct GNUNET_SERVER_Client *client,
const struct GNUNET_MessageHeader *message)
{
- const struct SearchMessage *sm;
+ const struct RegexSearchMessage *sm;
const char *string;
struct ClientEntry *ce;
uint16_t size;
size = ntohs (message->size);
- sm = (const struct SearchMessage *) message;
+ sm = (const struct RegexSearchMessage *) message;
string = (const char *) &sm[1];
- if ( (size <= sizeof (struct SearchMessage)) ||
- ('\0' != string[size - sizeof (struct SearchMessage) - 1]) )
+ if ( (size <= sizeof (struct RegexSearchMessage)) ||
+ ('\0' != string[size - sizeof (struct RegexSearchMessage) - 1]) )
{
GNUNET_break (0);
GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
return;
}
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Starting to search for `%s'\n",
+ string);
ce = GNUNET_new (struct ClientEntry);
ce->client = client;
- ce->sh = GNUNET_REGEX_search (dht,
- string,
- &handle_search_result,
- ce,
- stats);
+ ce->sh = REGEX_INTERNAL_search (dht,
+ string,
+ &handle_search_result,
+ ce,
+ stats);
if (NULL == ce->sh)
{
GNUNET_break (0);
return;
}
GNUNET_CONTAINER_DLL_insert (client_head,
- client_tail,
+ client_tail,
ce);
+ GNUNET_SERVER_notification_context_add (nc, client);
GNUNET_SERVER_receive_done (client, GNUNET_OK);
}
{&handle_search, NULL, GNUNET_MESSAGE_TYPE_REGEX_SEARCH, 0},
{NULL, NULL, 0, 0}
};
+
+ my_private_key = GNUNET_CRYPTO_eddsa_key_create_from_configuration (cfg);
+ if (NULL == my_private_key)
+ {
+ GNUNET_SCHEDULER_shutdown ();
+ return;
+ }
dht = GNUNET_DHT_connect (cfg, 1024);
if (NULL == dht)
{
+ GNUNET_free (my_private_key);
+ my_private_key = NULL;
GNUNET_SCHEDULER_shutdown ();
return;
}
- GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &cleanup_task,
- NULL);
+ GNUNET_SCHEDULER_add_shutdown (&cleanup_task,
+ NULL);
+ nc = GNUNET_SERVER_notification_context_create (server, 1);
stats = GNUNET_STATISTICS_create ("regex", cfg);
GNUNET_SERVER_add_handlers (server, handlers);
- GNUNET_SERVER_disconnect_notify (server, &handle_client_disconnect, NULL);
+ GNUNET_SERVER_disconnect_notify (server,
+ &handle_client_disconnect,
+ NULL);
}
projects / oweals / gnunet.git / blobdiff