/*
This file is part of GNUnet
- Copyright (C) 2013, 2014, 2017 GNUnet e.V.
+ Copyright (C) 2013-2017 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
*/
#define INCOMING_CHANNEL_TIMEOUT GNUNET_TIME_UNIT_MINUTES
+
+/**
+ * Lazy copy requests made by a client.
+ */
+struct LazyCopyRequest
+{
+ /**
+ * Kept in a DLL.
+ */
+ struct LazyCopyRequest *prev;
+
+ /**
+ * Kept in a DLL.
+ */
+ struct LazyCopyRequest *next;
+
+ /**
+ * Which set are we supposed to copy?
+ */
+ struct Set *source_set;
+
+ /**
+ * Cookie identifying the request.
+ */
+ uint32_t cookie;
+
+};
+
+
/**
* A listener is inhabited by a client, and waits for evaluation
* requests from remote peers.
struct Listener *prev;
/**
- * Client that owns the listener.
- * Only one client may own a listener.
+ * Head of DLL of operations this listener is responsible for.
+ * Once the client has accepted/declined the operation, the
+ * operation is moved to the respective set's operation DLLS.
*/
- struct GNUNET_SERVICE_Client *client;
+ struct Operation *op_head;
/**
- * Message queue for the client
+ * Tail of DLL of operations this listener is responsible for.
+ * Once the client has accepted/declined the operation, the
+ * operation is moved to the respective set's operation DLLS.
*/
- struct GNUNET_MQ_Handle *client_mq;
+ struct Operation *op_tail;
/**
- * Application ID for the operation, used to distinguish
- * multiple operations of the same type with the same peer.
+ * Client that owns the listener.
+ * Only one client may own a listener.
*/
- struct GNUNET_HashCode app_id;
+ struct ClientState *cs;
/**
* The port we are listening on with CADET.
*/
struct GNUNET_CADET_Port *open_port;
+ /**
+ * Application ID for the operation, used to distinguish
+ * multiple operations of the same type with the same peer.
+ */
+ struct GNUNET_HashCode app_id;
+
/**
* The type of the operation.
*/
};
-struct LazyCopyRequest
-{
- struct Set *source_set;
- uint32_t cookie;
-
- struct LazyCopyRequest *prev;
- struct LazyCopyRequest *next;
-};
-
-
-/**
- * Configuration of our local peer.
- */
-static const struct GNUNET_CONFIGURATION_Handle *configuration;
-
/**
* Handle to the cadet service, used to listen for and connect to
* remote peers.
static struct GNUNET_CADET_Handle *cadet;
/**
- * Sets are held in a doubly linked list.
+ * DLL of lazy copy requests by this client.
*/
-static struct Set *sets_head;
+static struct LazyCopyRequest *lazy_copy_head;
/**
- * Sets are held in a doubly linked list.
+ * DLL of lazy copy requests by this client.
*/
-static struct Set *sets_tail;
+static struct LazyCopyRequest *lazy_copy_tail;
/**
- * Listeners are held in a doubly linked list.
+ * Generator for unique cookie we set per lazy copy request.
*/
-static struct Listener *listeners_head;
+static uint32_t lazy_copy_cookie;
/**
- * Listeners are held in a doubly linked list.
+ * Statistics handle.
*/
-static struct Listener *listeners_tail;
+struct GNUNET_STATISTICS_Handle *_GSS_statistics;
/**
- * Incoming sockets from remote peers are held in a doubly linked
- * list.
+ * Listeners are held in a doubly linked list.
*/
-static struct Operation *incoming_head;
+static struct Listener *listener_head;
/**
- * Incoming sockets from remote peers are held in a doubly linked
- * list.
+ * Listeners are held in a doubly linked list.
*/
-static struct Operation *incoming_tail;
-
-static struct LazyCopyRequest *lazy_copy_head;
-static struct LazyCopyRequest *lazy_copy_tail;
-
-static uint32_t lazy_copy_cookie = 1;
+static struct Listener *listener_tail;
/**
* Counter for allocating unique IDs for clients, used to identify
* incoming operation requests from remote peers, that the client can
- * choose to accept or refuse.
- */
-static uint32_t suggest_id = 1;
-
-/**
- * Statistics handle.
+ * choose to accept or refuse. 0 must not be used (reserved for
+ * uninitialized).
*/
-struct GNUNET_STATISTICS_Handle *_GSS_statistics;
-
-
-/**
- * Get set that is owned by the given client, if any.
- *
- * @param client client to look for
- * @return set that the client owns, NULL if the client
- * does not own a set
- */
-static struct Set *
-set_get (struct GNUNET_SERVICE_Client *client)
-{
- for (struct Set *set = sets_head; NULL != set; set = set->next)
- if (set->client == client)
- return set;
- return NULL;
-}
-
-
-/**
- * Get the listener associated with the given client, if any.
- *
- * @param client the client
- * @return listener associated with the client, NULL
- * if there isn't any
- */
-static struct Listener *
-listener_get (struct GNUNET_SERVICE_Client *client)
-{
- for (struct Listener *listener = listeners_head;
- NULL != listener;
- listener = listener->next)
- if (listener->client == client)
- return listener;
- return NULL;
-}
+static uint32_t suggest_id;
/**
* Get the incoming socket associated with the given id.
*
+ * @param listener the listener to look in
* @param id id to look for
* @return the incoming socket associated with the id,
* or NULL if there is none
static struct Operation *
get_incoming (uint32_t id)
{
- for (struct Operation *op = incoming_head; NULL != op; op = op->next)
- if (op->suggest_id == id)
- {
- GNUNET_assert (GNUNET_YES == op->is_incoming);
- return op;
- }
+ for (struct Listener *listener = listener_head;
+ NULL != listener;
+ listener = listener->next)
+ {
+ for (struct Operation *op = listener->op_head; NULL != op; op = op->next)
+ if (op->suggest_id == id)
+ return op;
+ }
return NULL;
}
/**
- * Destroy a listener, free all resources associated with it.
+ * Destroy an incoming request from a remote peer
*
- * @param listener listener to destroy
+ * @param op remote request to destroy
*/
static void
-listener_destroy (struct Listener *listener)
+incoming_destroy (struct Operation *op)
{
- /* If the client is not dead yet, destroy it.
- * The client's destroy callback will destroy the listener again. */
- if (NULL != listener->client)
- {
- struct GNUNET_SERVICE_Client *client = listener->client;
-
- GNUNET_MQ_destroy (listener->client_mq);
- listener->client_mq = NULL;
+ struct Listener *listener;
+ struct GNUNET_CADET_Channel *channel;
- listener->client = NULL;
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Disconnecting listener client\n");
- GNUNET_SERVICE_client_drop (client);
- return;
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Destroying incoming operation %p\n",
+ op);
+ if (NULL != (listener = op->listener))
+ {
+ GNUNET_CONTAINER_DLL_remove (listener->op_head,
+ listener->op_tail,
+ op);
+ op->listener = NULL;
+ }
+ if (NULL != op->timeout_task)
+ {
+ GNUNET_SCHEDULER_cancel (op->timeout_task);
+ op->timeout_task = NULL;
+ }
+ if (NULL != (channel = op->channel))
+ {
+ op->channel = NULL;
+ GNUNET_CADET_channel_destroy (channel);
}
- GNUNET_CADET_close_port (listener->open_port);
- GNUNET_CONTAINER_DLL_remove (listeners_head,
- listeners_tail,
- listener);
- GNUNET_free (listener);
}
static void
collect_generation_garbage (struct Set *set)
{
- struct Operation *op;
struct GarbageContext gc;
gc.min_op_generation = UINT_MAX;
gc.max_op_generation = 0;
- for (op = set->ops_head; NULL != op; op = op->next)
+ for (struct Operation *op = set->ops_head; NULL != op; op = op->next)
{
gc.min_op_generation = GNUNET_MIN (gc.min_op_generation,
op->generation_created);
}
+/**
+ * Is @a generation in the range of exclusions?
+ *
+ * @param generation generation to query
+ * @param excluded array of generations where the element is excluded
+ * @param excluded_size length of the @a excluded array
+ * @return #GNUNET_YES if @a generation is in any of the ranges
+ */
static int
is_excluded_generation (unsigned int generation,
struct GenerationRange *excluded,
unsigned int excluded_size)
{
- unsigned int i;
-
- for (i = 0; i < excluded_size; i++)
- {
- if ( (generation >= excluded[i].start) && (generation < excluded[i].end) )
+ for (unsigned int i = 0; i < excluded_size; i++)
+ if ( (generation >= excluded[i].start) &&
+ (generation < excluded[i].end) )
return GNUNET_YES;
- }
-
return GNUNET_NO;
}
+/**
+ * Is element @a ee part of the set during @a query_generation?
+ *
+ * @param ee element to test
+ * @param query_generation generation to query
+ * @param excluded array of generations where the element is excluded
+ * @param excluded_size length of the @a excluded array
+ * @return #GNUNET_YES if the element is in the set, #GNUNET_NO if not
+ */
static int
is_element_of_generation (struct ElementEntry *ee,
unsigned int query_generation,
{
struct MutationEvent *mut;
int is_present;
- unsigned int i;
GNUNET_assert (NULL != ee->mutations);
-
- if (GNUNET_YES == is_excluded_generation (query_generation, excluded, excluded_size))
+ if (GNUNET_YES ==
+ is_excluded_generation (query_generation,
+ excluded,
+ excluded_size))
{
GNUNET_break (0);
return GNUNET_NO;
/* Could be made faster with binary search, but lists
are small, so why bother. */
- for (i = 0; i < ee->mutations_size; i++)
+ for (unsigned int i = 0; i < ee->mutations_size; i++)
{
mut = &ee->mutations[i];
continue;
}
- if (GNUNET_YES == is_excluded_generation (mut->generation, excluded, excluded_size))
+ if (GNUNET_YES ==
+ is_excluded_generation (mut->generation,
+ excluded,
+ excluded_size))
{
/* The generation is excluded (because it belongs to another
fork via a lazy copy) and thus mutations aren't considered
}
/* This would be an inconsistency in how we manage mutations. */
- if ( (GNUNET_YES == is_present) && (GNUNET_YES == mut->added) )
+ if ( (GNUNET_YES == is_present) &&
+ (GNUNET_YES == mut->added) )
GNUNET_assert (0);
-
/* Likewise. */
- if ( (GNUNET_NO == is_present) && (GNUNET_NO == mut->added) )
+ if ( (GNUNET_NO == is_present) &&
+ (GNUNET_NO == mut->added) )
GNUNET_assert (0);
is_present = mut->added;
}
-int
-_GSS_is_element_of_set (struct ElementEntry *ee,
- struct Set *set)
-{
- return is_element_of_generation (ee,
- set->current_generation,
- set->excluded_generations,
- set->excluded_generations_size);
-}
-
-
-static int
-is_element_of_iteration (struct ElementEntry *ee,
- struct Set *set)
-{
- return is_element_of_generation (ee,
- set->iter_generation,
- set->excluded_generations,
- set->excluded_generations_size);
-}
-
-
+/**
+ * Is element @a ee part of the set used by @a op?
+ *
+ * @param ee element to test
+ * @param op operation the defines the set and its generation
+ * @return #GNUNET_YES if the element is in the set, #GNUNET_NO if not
+ */
int
_GSS_is_element_of_operation (struct ElementEntry *ee,
struct Operation *op)
{
return is_element_of_generation (ee,
op->generation_created,
- op->spec->set->excluded_generations,
- op->spec->set->excluded_generations_size);
+ op->set->excluded_generations,
+ op->set->excluded_generations_size);
}
/**
- * Destroy the given operation. Call the implementation-specific
- * cancel function of the operation. Disconnects from the remote
- * peer. Does not disconnect the client, as there may be multiple
- * operations per set.
+ * Destroy the given operation. Used for any operation where both
+ * peers were known and that thus actually had a vt and channel. Must
+ * not be used for operations where 'listener' is still set and we do
+ * not know the other peer.
+ *
+ * Call the implementation-specific cancel function of the operation.
+ * Disconnects from the remote peer. Does not disconnect the client,
+ * as there may be multiple operations per set.
*
* @param op operation to destroy
* @param gc #GNUNET_YES to perform garbage collection on the set
_GSS_operation_destroy (struct Operation *op,
int gc)
{
- struct Set *set;
+ struct Set *set = op->set;
struct GNUNET_CADET_Channel *channel;
- if (NULL == op->vt)
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Destroying operation %p\n",
+ op);
+ GNUNET_assert (NULL == op->listener);
+ if (NULL != op->state)
{
- /* already in #_GSS_operation_destroy() */
- return;
+ set->vt->cancel (op);
+ op->state = NULL;
}
- GNUNET_assert (GNUNET_NO == op->is_incoming);
- GNUNET_assert (NULL != op->spec);
- set = op->spec->set;
- GNUNET_CONTAINER_DLL_remove (set->ops_head,
- set->ops_tail,
- op);
- op->vt->cancel (op);
- op->vt = NULL;
- if (NULL != op->spec)
+ if (NULL != set)
{
- if (NULL != op->spec->context_msg)
- {
- GNUNET_free (op->spec->context_msg);
- op->spec->context_msg = NULL;
- }
- GNUNET_free (op->spec);
- op->spec = NULL;
+ GNUNET_CONTAINER_DLL_remove (set->ops_head,
+ set->ops_tail,
+ op);
+ op->set = NULL;
+ }
+ if (NULL != op->context_msg)
+ {
+ GNUNET_free (op->context_msg);
+ op->context_msg = NULL;
}
if (NULL != (channel = op->channel))
{
+ /* This will free op; called conditionally as this helper function
+ is also called from within the channel disconnect handler. */
op->channel = NULL;
GNUNET_CADET_channel_destroy (channel);
}
-
- if (GNUNET_YES == gc)
+ if ( (NULL != set) &&
+ (GNUNET_YES == gc) )
collect_generation_garbage (set);
/* We rely on the channel end handler to free 'op'. When 'op->channel' was NULL,
* there was a channel end handler that will free 'op' on the call stack. */
}
+/**
+ * Callback called when a client connects to the service.
+ *
+ * @param cls closure for the service
+ * @param c the new client that connected to the service
+ * @param mq the message queue used to send messages to the client
+ * @return @a `struct ClientState`
+ */
+static void *
+client_connect_cb (void *cls,
+ struct GNUNET_SERVICE_Client *c,
+ struct GNUNET_MQ_Handle *mq)
+{
+ struct ClientState *cs;
+
+ cs = GNUNET_new (struct ClientState);
+ cs->client = c;
+ cs->mq = mq;
+ return cs;
+}
+
+
/**
* Iterator over hash map entries to free element entries.
*
struct ElementEntry *ee = value;
GNUNET_free_non_null (ee->mutations);
-
GNUNET_free (ee);
return GNUNET_YES;
}
/**
- * Destroy a set, and free all resources and operations associated with it.
+ * Clean up after a client has disconnected
*
- * @param set the set to destroy
+ * @param cls closure, unused
+ * @param client the client to clean up after
+ * @param internal_cls the `struct ClientState`
*/
static void
-set_destroy (struct Set *set)
+client_disconnect_cb (void *cls,
+ struct GNUNET_SERVICE_Client *client,
+ void *internal_cls)
{
- if (NULL != set->client)
- {
- /* If the client is not dead yet, destroy it. The client's destroy
- * callback will call `set_destroy()` again in this case. We do
- * this so that the channel end handler still has a valid set handle
- * to destroy. */
- struct GNUNET_SERVICE_Client *client = set->client;
-
- set->client = NULL;
- GNUNET_SERVICE_client_drop (client);
- return;
- }
- GNUNET_assert (NULL != set->state);
- while (NULL != set->ops_head)
- _GSS_operation_destroy (set->ops_head, GNUNET_NO);
- set->vt->destroy_set (set->state);
- set->state = NULL;
- if (NULL != set->iter)
- {
- GNUNET_CONTAINER_multihashmap_iterator_destroy (set->iter);
- set->iter = NULL;
- set->iteration_id++;
- }
+ struct ClientState *cs = internal_cls;
+ struct Operation *op;
+ struct Listener *listener;
+ struct Set *set;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Client disconnected, cleaning up\n");
+ if (NULL != (set = cs->set))
{
- struct SetContent *content;
+ struct SetContent *content = set->content;
struct PendingMutation *pm;
struct PendingMutation *pm_current;
+ struct LazyCopyRequest *lcr;
- content = set->content;
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Destroying client's set\n");
+ /* Destroy pending set operations */
+ while (NULL != set->ops_head)
+ _GSS_operation_destroy (set->ops_head,
+ GNUNET_NO);
+
+ /* Destroy operation-specific state */
+ GNUNET_assert (NULL != set->state);
+ set->vt->destroy_set (set->state);
+ set->state = NULL;
+
+ /* Clean up ongoing iterations */
+ if (NULL != set->iter)
+ {
+ GNUNET_CONTAINER_multihashmap_iterator_destroy (set->iter);
+ set->iter = NULL;
+ set->iteration_id++;
+ }
- // discard any pending mutations that reference this set
+ /* discard any pending mutations that reference this set */
pm = content->pending_mutations_head;
while (NULL != pm)
{
pm_current = pm;
pm = pm->next;
- if (pm_current-> set == set)
+ if (pm_current->set == set)
+ {
GNUNET_CONTAINER_DLL_remove (content->pending_mutations_head,
content->pending_mutations_tail,
pm_current);
-
+ GNUNET_free (pm_current);
+ }
}
+ /* free set content (or at least decrement RC) */
set->content = NULL;
GNUNET_assert (0 != content->refcount);
- content->refcount -= 1;
+ content->refcount--;
if (0 == content->refcount)
{
GNUNET_assert (NULL != content->elements);
content->elements = NULL;
GNUNET_free (content);
}
- }
- GNUNET_free_non_null (set->excluded_generations);
- set->excluded_generations = NULL;
- GNUNET_CONTAINER_DLL_remove (sets_head,
- sets_tail,
- set);
+ GNUNET_free_non_null (set->excluded_generations);
+ set->excluded_generations = NULL;
- // remove set from pending copy requests
- {
- struct LazyCopyRequest *lcr;
+ /* remove set from pending copy requests */
lcr = lazy_copy_head;
while (NULL != lcr)
{
- struct LazyCopyRequest *lcr_current;
- lcr_current = lcr;
+ struct LazyCopyRequest *lcr_current = lcr;
+
lcr = lcr->next;
if (lcr_current->source_set == set)
+ {
GNUNET_CONTAINER_DLL_remove (lazy_copy_head,
lazy_copy_tail,
lcr_current);
+ GNUNET_free (lcr_current);
+ }
}
+ GNUNET_free (set);
}
- GNUNET_free (set);
-}
-
-
-/**
- * Callback called when a client connects to the service.
- *
- * @param cls closure for the service
- * @param c the new client that connected to the service
- * @param mq the message queue used to send messages to the client
- * @return @a c
- */
-static void *
-client_connect_cb (void *cls,
- struct GNUNET_SERVICE_Client *c,
- struct GNUNET_MQ_Handle *mq)
-{
- return c;
-}
-
-
-/**
- * Destroy an incoming request from a remote peer
- *
- * @param incoming remote request to destroy
- */
-static void
-incoming_destroy (struct Operation *incoming)
-{
- struct GNUNET_CADET_Channel *channel;
-
- GNUNET_assert (GNUNET_YES == incoming->is_incoming);
- GNUNET_CONTAINER_DLL_remove (incoming_head,
- incoming_tail,
- incoming);
- if (NULL != incoming->timeout_task)
- {
- GNUNET_SCHEDULER_cancel (incoming->timeout_task);
- incoming->timeout_task = NULL;
- }
- /* make sure that the tunnel end handler will not destroy us again */
- incoming->vt = NULL;
- if (NULL != incoming->spec)
- {
- GNUNET_free (incoming->spec);
- incoming->spec = NULL;
- }
- if (NULL != (channel = incoming->channel))
- {
- incoming->channel = NULL;
- GNUNET_CADET_channel_destroy (channel);
- }
-}
-
-
-/**
- * Clean up after a client has disconnected
- *
- * @param cls closure, unused
- * @param client the client to clean up after
- * @param internal_cls our client-specific internal data structure
- */
-static void
-client_disconnect_cb (void *cls,
- struct GNUNET_SERVICE_Client *client,
- void *internal_cls)
-{
- struct Set *set;
-
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "client disconnected, cleaning up\n");
- set = set_get (client);
- if (NULL != set)
+ if (NULL != (listener = cs->listener))
{
- set->client = NULL;
- set_destroy (set);
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Client's set destroyed\n");
- }
- struct Listener *listener = listener_get (client);
- if (NULL != listener)
- {
- /* destroy all incoming operations whose client just
- * got destroyed */
- //struct Operation *op = incoming_head;
- /*
- while (NULL != op)
- {
- struct Operation *curr = op;
- op = op->next;
- if ( (GNUNET_YES == curr->is_incoming) &&
- (curr->listener == listener) )
- incoming_destroy (curr);
- }
- */
- listener->client = NULL;
- listener_destroy (listener);
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Client's listener destroyed\n");
+ "Destroying client's listener\n");
+ GNUNET_CADET_close_port (listener->open_port);
+ listener->open_port = NULL;
+ while (NULL != (op = listener->op_head))
+ incoming_destroy (op);
+ GNUNET_CONTAINER_DLL_remove (listener_head,
+ listener_tail,
+ listener);
+ GNUNET_free (listener);
}
-}
-
-
-/**
- * Suggest the given request to the listener. The listening client can
- * then accept or reject the remote request.
- *
- * @param incoming the incoming peer with the request to suggest
- * @param listener the listener to suggest the request to
- */
-static void
-incoming_suggest (struct Operation *incoming,
- struct Listener *listener)
-{
- struct GNUNET_MQ_Envelope *mqm;
- struct GNUNET_SET_RequestMessage *cmsg;
-
- GNUNET_assert (GNUNET_YES == incoming->is_incoming);
- GNUNET_assert (NULL != incoming->spec);
- GNUNET_assert (0 == incoming->suggest_id);
- incoming->suggest_id = suggest_id++;
- if (0 == suggest_id)
- suggest_id++;
- GNUNET_assert (NULL != incoming->timeout_task);
- GNUNET_SCHEDULER_cancel (incoming->timeout_task);
- incoming->timeout_task = NULL;
- mqm = GNUNET_MQ_msg_nested_mh (cmsg,
- GNUNET_MESSAGE_TYPE_SET_REQUEST,
- incoming->spec->context_msg);
- GNUNET_assert (NULL != mqm);
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Suggesting incoming request with accept id %u to listener\n",
- incoming->suggest_id);
- cmsg->accept_id = htonl (incoming->suggest_id);
- cmsg->peer_id = incoming->spec->peer;
- GNUNET_MQ_send (listener->client_mq,
- mqm);
+ GNUNET_free (cs);
}
const struct OperationRequestMessage *msg)
{
struct Operation *op = cls;
+ struct Listener *listener = op->listener;
const struct GNUNET_MessageHeader *nested_context;
/* double operation request */
- if (NULL != op->spec)
+ if (0 != op->suggest_id)
+ {
+ GNUNET_break_op (0);
+ return GNUNET_SYSERR;
+ }
+ /* This should be equivalent to the previous condition, but can't hurt to check twice */
+ if (NULL == op->listener)
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ if (listener->operation != (enum GNUNET_SET_OperationType) ntohl (msg->operation))
{
GNUNET_break_op (0);
return GNUNET_SYSERR;
{
struct Operation *op = cls;
struct Listener *listener = op->listener;
- struct OperationSpecification *spec;
const struct GNUNET_MessageHeader *nested_context;
+ struct GNUNET_MQ_Envelope *env;
+ struct GNUNET_SET_RequestMessage *cmsg;
- GNUNET_assert (GNUNET_YES == op->is_incoming);
- spec = GNUNET_new (struct OperationSpecification);
nested_context = GNUNET_MQ_extract_nested_mh (msg);
/* Make a copy of the nested_context (application-specific context
information that is opaque to set) so we can pass it to the
listener later on */
if (NULL != nested_context)
- spec->context_msg = GNUNET_copy_message (nested_context);
- spec->operation = ntohl (msg->operation);
- spec->app_id = listener->app_id;
- spec->salt = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_NONCE,
- UINT32_MAX);
- spec->peer = op->peer;
- spec->remote_element_count = ntohl (msg->element_count);
- op->spec = spec;
- listener = op->listener;
+ op->context_msg = GNUNET_copy_message (nested_context);
+ op->remote_element_count = ntohl (msg->element_count);
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Received P2P operation request (op %u, port %s) for active listener\n",
(uint32_t) ntohl (msg->operation),
- GNUNET_h2s (&listener->app_id));
- incoming_suggest (op,
- listener);
+ GNUNET_h2s (&op->listener->app_id));
+ GNUNET_assert (0 == op->suggest_id);
+ if (0 == suggest_id)
+ suggest_id++;
+ op->suggest_id = suggest_id++;
+ GNUNET_assert (NULL != op->timeout_task);
+ GNUNET_SCHEDULER_cancel (op->timeout_task);
+ op->timeout_task = NULL;
+ env = GNUNET_MQ_msg_nested_mh (cmsg,
+ GNUNET_MESSAGE_TYPE_SET_REQUEST,
+ op->context_msg);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Suggesting incoming request with accept id %u to listener %p of client %p\n",
+ op->suggest_id,
+ listener,
+ listener->cs);
+ cmsg->accept_id = htonl (op->suggest_id);
+ cmsg->peer_id = op->peer;
+ GNUNET_MQ_send (listener->cs->mq,
+ env);
+ /* NOTE: GNUNET_CADET_receive_done() will be called in
+ #handle_client_accept() */
}
+/**
+ * Add an element to @a set as specified by @a msg
+ *
+ * @param set set to manipulate
+ * @param msg message specifying the change
+ */
static void
execute_add (struct Set *set,
- const struct GNUNET_MessageHeader *m)
+ const struct GNUNET_SET_ElementMessage *msg)
{
- const struct GNUNET_SET_ElementMessage *msg;
struct GNUNET_SET_Element el;
struct ElementEntry *ee;
struct GNUNET_HashCode hash;
- GNUNET_assert (GNUNET_MESSAGE_TYPE_SET_ADD == ntohs (m->type));
-
- msg = (const struct GNUNET_SET_ElementMessage *) m;
- el.size = ntohs (m->size) - sizeof *msg;
+ GNUNET_assert (GNUNET_MESSAGE_TYPE_SET_ADD == ntohs (msg->header.type));
+ el.size = ntohs (msg->header.size) - sizeof (*msg);
el.data = &msg[1];
el.element_type = ntohs (msg->element_type);
- GNUNET_SET_element_hash (&el, &hash);
-
+ GNUNET_SET_element_hash (&el,
+ &hash);
ee = GNUNET_CONTAINER_multihashmap_get (set->content->elements,
&hash);
-
if (NULL == ee)
{
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Client inserts element %s of size %u\n",
GNUNET_h2s (&hash),
el.size);
- ee = GNUNET_malloc (el.size + sizeof *ee);
+ ee = GNUNET_malloc (el.size + sizeof (*ee));
ee->element.size = el.size;
GNUNET_memcpy (&ee[1],
el.data,
ee,
GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
}
- else if (GNUNET_YES == _GSS_is_element_of_set (ee, set))
+ else if (GNUNET_YES ==
+ is_element_of_generation (ee,
+ set->current_generation,
+ set->excluded_generations,
+ set->excluded_generations_size))
{
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Client inserted element %s of size %u twice (ignored)\n",
ee->mutations_size,
mut);
}
-
- set->vt->add (set->state, ee);
+ set->vt->add (set->state,
+ ee);
}
+/**
+ * Remove an element from @a set as specified by @a msg
+ *
+ * @param set set to manipulate
+ * @param msg message specifying the change
+ */
static void
execute_remove (struct Set *set,
- const struct GNUNET_MessageHeader *m)
+ const struct GNUNET_SET_ElementMessage *msg)
{
- const struct GNUNET_SET_ElementMessage *msg;
struct GNUNET_SET_Element el;
struct ElementEntry *ee;
struct GNUNET_HashCode hash;
- GNUNET_assert (GNUNET_MESSAGE_TYPE_SET_REMOVE == ntohs (m->type));
-
- msg = (const struct GNUNET_SET_ElementMessage *) m;
- el.size = ntohs (m->size) - sizeof *msg;
+ GNUNET_assert (GNUNET_MESSAGE_TYPE_SET_REMOVE == ntohs (msg->header.type));
+ el.size = ntohs (msg->header.size) - sizeof (*msg);
el.data = &msg[1];
el.element_type = ntohs (msg->element_type);
GNUNET_SET_element_hash (&el, &hash);
el.size);
return;
}
- if (GNUNET_NO == _GSS_is_element_of_set (ee, set))
+ if (GNUNET_NO ==
+ is_element_of_generation (ee,
+ set->current_generation,
+ set->excluded_generations,
+ set->excluded_generations_size))
{
/* Client tried to remove element twice */
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
ee->mutations_size,
mut);
}
- set->vt->remove (set->state, ee);
+ set->vt->remove (set->state,
+ ee);
}
-
+/**
+ * Perform a mutation on a set as specified by the @a msg
+ *
+ * @param set the set to mutate
+ * @param msg specification of what to change
+ */
static void
execute_mutation (struct Set *set,
- const struct GNUNET_MessageHeader *m)
+ const struct GNUNET_SET_ElementMessage *msg)
{
- switch (ntohs (m->type))
+ switch (ntohs (msg->header.type))
{
case GNUNET_MESSAGE_TYPE_SET_ADD:
- execute_add (set, m);
+ execute_add (set, msg);
break;
case GNUNET_MESSAGE_TYPE_SET_REMOVE:
- execute_remove (set, m);
+ execute_remove (set, msg);
break;
default:
GNUNET_break (0);
}
+/**
+ * Execute mutations that were delayed on a set because of
+ * pending operations.
+ *
+ * @param set the set to execute mutations on
+ */
+static void
+execute_delayed_mutations (struct Set *set)
+{
+ struct PendingMutation *pm;
+
+ if (0 != set->content->iterator_count)
+ return; /* still cannot do this */
+ while (NULL != (pm = set->content->pending_mutations_head))
+ {
+ GNUNET_CONTAINER_DLL_remove (set->content->pending_mutations_head,
+ set->content->pending_mutations_tail,
+ pm);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Executing pending mutation on %p.\n",
+ pm->set);
+ execute_mutation (pm->set,
+ pm->msg);
+ GNUNET_free (pm->msg);
+ GNUNET_free (pm);
+ }
+}
+
/**
* Send the next element of a set to the set's client. The next element is given by
struct GNUNET_SET_IterResponseMessage *msg;
GNUNET_assert (NULL != set->iter);
-
-again:
-
- ret = GNUNET_CONTAINER_multihashmap_iterator_next (set->iter,
- NULL,
- (const void **) &ee);
- if (GNUNET_NO == ret)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Iteration on %p done.\n",
- (void *) set);
- ev = GNUNET_MQ_msg_header (GNUNET_MESSAGE_TYPE_SET_ITER_DONE);
- GNUNET_CONTAINER_multihashmap_iterator_destroy (set->iter);
- set->iter = NULL;
- set->iteration_id++;
-
- GNUNET_assert (set->content->iterator_count > 0);
- set->content->iterator_count -= 1;
-
- if (0 == set->content->iterator_count)
+ do {
+ ret = GNUNET_CONTAINER_multihashmap_iterator_next (set->iter,
+ NULL,
+ (const void **) &ee);
+ if (GNUNET_NO == ret)
{
- while (NULL != set->content->pending_mutations_head)
- {
- struct PendingMutation *pm;
-
- pm = set->content->pending_mutations_head;
- GNUNET_CONTAINER_DLL_remove (set->content->pending_mutations_head,
- set->content->pending_mutations_tail,
- pm);
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Executing pending mutation on %p.\n",
- (void *) pm->set);
- execute_mutation (pm->set, pm->mutation_message);
- GNUNET_free (pm->mutation_message);
- GNUNET_free (pm);
- }
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Iteration on %p done.\n",
+ set);
+ ev = GNUNET_MQ_msg_header (GNUNET_MESSAGE_TYPE_SET_ITER_DONE);
+ GNUNET_CONTAINER_multihashmap_iterator_destroy (set->iter);
+ set->iter = NULL;
+ set->iteration_id++;
+ GNUNET_assert (set->content->iterator_count > 0);
+ set->content->iterator_count--;
+ execute_delayed_mutations (set);
+ GNUNET_MQ_send (set->cs->mq,
+ ev);
+ return;
}
-
- }
- else
- {
GNUNET_assert (NULL != ee);
-
- if (GNUNET_NO == is_element_of_iteration (ee, set))
- goto again;
-
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Sending iteration element on %p.\n",
- (void *) set);
- ev = GNUNET_MQ_msg_extra (msg,
- ee->element.size,
- GNUNET_MESSAGE_TYPE_SET_ITER_ELEMENT);
- GNUNET_memcpy (&msg[1],
- ee->element.data,
- ee->element.size);
- msg->element_type = htons (ee->element.element_type);
- msg->iteration_id = htons (set->iteration_id);
- }
- GNUNET_MQ_send (set->client_mq, ev);
+ } while (GNUNET_NO ==
+ is_element_of_generation (ee,
+ set->iter_generation,
+ set->excluded_generations,
+ set->excluded_generations_size));
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Sending iteration element on %p.\n",
+ set);
+ ev = GNUNET_MQ_msg_extra (msg,
+ ee->element.size,
+ GNUNET_MESSAGE_TYPE_SET_ITER_ELEMENT);
+ GNUNET_memcpy (&msg[1],
+ ee->element.data,
+ ee->element.size);
+ msg->element_type = htons (ee->element.element_type);
+ msg->iteration_id = htons (set->iteration_id);
+ GNUNET_MQ_send (set->cs->mq,
+ ev);
}
handle_client_iterate (void *cls,
const struct GNUNET_MessageHeader *m)
{
- struct GNUNET_SERVICE_Client *client = cls;
+ struct ClientState *cs = cls;
struct Set *set;
- set = set_get (client);
- if (NULL == set)
+ if (NULL == (set = cs->set))
{
/* attempt to iterate over a non existing set */
GNUNET_break (0);
- GNUNET_SERVICE_client_drop (client);
+ GNUNET_SERVICE_client_drop (cs->client);
return;
}
if (NULL != set->iter)
{
/* Only one concurrent iterate-action allowed per set */
GNUNET_break (0);
- GNUNET_SERVICE_client_drop (client);
+ GNUNET_SERVICE_client_drop (cs->client);
return;
}
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
(void *) set,
set->current_generation,
GNUNET_CONTAINER_multihashmap_size (set->content->elements));
- GNUNET_SERVICE_client_continue (client);
- set->content->iterator_count += 1;
+ GNUNET_SERVICE_client_continue (cs->client);
+ set->content->iterator_count++;
set->iter = GNUNET_CONTAINER_multihashmap_iterator_create (set->content->elements);
set->iter_generation = set->current_generation;
send_client_element (set);
handle_client_create_set (void *cls,
const struct GNUNET_SET_CreateMessage *msg)
{
- struct GNUNET_SERVICE_Client *client = cls;
+ struct ClientState *cs = cls;
struct Set *set;
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Client created new set (operation %u)\n",
(uint32_t) ntohl (msg->operation));
- if (NULL != set_get (client))
+ if (NULL != cs->set)
{
/* There can only be one set per client */
GNUNET_break (0);
- GNUNET_SERVICE_client_drop (client);
+ GNUNET_SERVICE_client_drop (cs->client);
return;
}
set = GNUNET_new (struct Set);
default:
GNUNET_free (set);
GNUNET_break (0);
- GNUNET_SERVICE_client_drop (client);
+ GNUNET_SERVICE_client_drop (cs->client);
return;
}
set->operation = (enum GNUNET_SET_OperationType) ntohl (msg->operation);
{
/* initialization failed (i.e. out of memory) */
GNUNET_free (set);
- GNUNET_SERVICE_client_drop (client);
+ GNUNET_SERVICE_client_drop (cs->client);
return;
}
set->content = GNUNET_new (struct SetContent);
set->content->refcount = 1;
- set->content->elements = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_YES);
- set->client = client;
- set->client_mq = GNUNET_SERVICE_client_get_mq (client);
- GNUNET_CONTAINER_DLL_insert (sets_head,
- sets_tail,
- set);
- GNUNET_SERVICE_client_continue (client);
+ set->content->elements = GNUNET_CONTAINER_multihashmap_create (1,
+ GNUNET_YES);
+ set->cs = cs;
+ cs->set = set;
+ GNUNET_SERVICE_client_continue (cs->client);
}
static void
incoming_timeout_cb (void *cls)
{
- struct Operation *incoming = cls;
+ struct Operation *op = cls;
- incoming->timeout_task = NULL;
- GNUNET_assert (GNUNET_YES == incoming->is_incoming);
+ op->timeout_task = NULL;
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Remote peer's incoming request timed out\n");
- incoming_destroy (incoming);
-}
-
-
-/**
- * Terminates an incoming operation in case we have not yet received an
- * operation request. Called by the channel destruction handler.
- *
- * @param op the channel context
- */
-static void
-handle_incoming_disconnect (struct Operation *op)
-{
- GNUNET_assert (GNUNET_YES == op->is_incoming);
- /* channel is already dead, incoming_destroy must not
- * destroy it ... */
- op->channel = NULL;
incoming_destroy (op);
- op->vt = NULL;
}
struct GNUNET_CADET_Channel *channel,
const struct GNUNET_PeerIdentity *source)
{
- static const struct SetVT incoming_vt = {
- .peer_disconnect = &handle_incoming_disconnect
- };
struct Listener *listener = cls;
- struct Operation *incoming;
+ struct Operation *op;
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"New incoming channel\n");
- incoming = GNUNET_new (struct Operation);
- incoming->listener = listener;
- incoming->is_incoming = GNUNET_YES;
- incoming->peer = *source;
- incoming->channel = channel;
- incoming->mq = GNUNET_CADET_get_mq (incoming->channel);
- incoming->vt = &incoming_vt;
- incoming->timeout_task
+ op = GNUNET_new (struct Operation);
+ op->listener = listener;
+ op->peer = *source;
+ op->channel = channel;
+ op->mq = GNUNET_CADET_get_mq (op->channel);
+ op->salt = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_NONCE,
+ UINT32_MAX);
+ op->timeout_task
= GNUNET_SCHEDULER_add_delayed (INCOMING_CHANNEL_TIMEOUT,
&incoming_timeout_cb,
- incoming);
- GNUNET_CONTAINER_DLL_insert_tail (incoming_head,
- incoming_tail,
- incoming);
- // incoming_suggest (incoming,
- // listener);
- return incoming;
+ op);
+ GNUNET_CONTAINER_DLL_insert (listener->op_head,
+ listener->op_tail,
+ op);
+ return op;
}
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"channel_end_cb called\n");
op->channel = NULL;
- op->keep++;
- /* the vt can be null if a client already requested canceling op. */
- if (NULL != op->vt)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "calling peer disconnect due to channel end\n");
- op->vt->peer_disconnect (op);
- }
- op->keep--;
- if (0 == op->keep)
- {
- /* cadet will never call us with the context again! */
- GNUNET_free (op);
- }
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "channel_end_cb finished\n");
+ if (NULL != op->listener)
+ incoming_destroy (op);
+ else if (NULL != op->set)
+ op->set->vt->channel_death (op);
+ else
+ _GSS_operation_destroy (op,
+ GNUNET_YES);
+ GNUNET_free (op);
}
handle_client_listen (void *cls,
const struct GNUNET_SET_ListenMessage *msg)
{
- struct GNUNET_SERVICE_Client *client = cls;
+ struct ClientState *cs = cls;
struct GNUNET_MQ_MessageHandler cadet_handlers[] = {
GNUNET_MQ_hd_var_size (incoming_msg,
GNUNET_MESSAGE_TYPE_SET_P2P_OPERATION_REQUEST,
};
struct Listener *listener;
- if (NULL != listener_get (client))
+ if (NULL != cs->listener)
{
/* max. one active listener per client! */
GNUNET_break (0);
- GNUNET_SERVICE_client_drop (client);
+ GNUNET_SERVICE_client_drop (cs->client);
return;
}
listener = GNUNET_new (struct Listener);
- listener->client = client;
- listener->client_mq = GNUNET_SERVICE_client_get_mq (client);
+ listener->cs = cs;
listener->app_id = msg->app_id;
- listener->operation = ntohl (msg->operation);
- GNUNET_CONTAINER_DLL_insert_tail (listeners_head,
- listeners_tail,
- listener);
+ listener->operation = (enum GNUNET_SET_OperationType) ntohl (msg->operation);
+ GNUNET_CONTAINER_DLL_insert (listener_head,
+ listener_tail,
+ listener);
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"New listener created (op %u, port %s)\n",
listener->operation,
GNUNET_h2s (&listener->app_id));
- listener->open_port = GNUNET_CADET_open_porT (cadet,
- &msg->app_id,
- &channel_new_cb,
- listener,
- &channel_window_cb,
- &channel_end_cb,
- cadet_handlers);
- /* check for existing incoming requests the listener might be interested in */
- for (struct Operation *op = incoming_head; NULL != op; op = op->next)
- {
- if (NULL == op->spec)
- continue; /* no details available yet */
- if (0 != op->suggest_id)
- continue; /* this one has been already suggested to a listener */
- if (listener->operation != op->spec->operation)
- continue; /* incompatible operation */
- if (0 != GNUNET_CRYPTO_hash_cmp (&listener->app_id,
- &op->spec->app_id))
- continue; /* incompatible appliation */
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Found matching existing request\n");
- incoming_suggest (op,
- listener);
- }
- GNUNET_SERVICE_client_continue (client);
+ listener->open_port
+ = GNUNET_CADET_open_porT (cadet,
+ &msg->app_id,
+ &channel_new_cb,
+ listener,
+ &channel_window_cb,
+ &channel_end_cb,
+ cadet_handlers);
+ GNUNET_SERVICE_client_continue (cs->client);
}
handle_client_reject (void *cls,
const struct GNUNET_SET_RejectMessage *msg)
{
- struct GNUNET_SERVICE_Client *client = cls;
- struct Operation *incoming;
+ struct ClientState *cs = cls;
+ struct Operation *op;
- incoming = get_incoming (ntohl (msg->accept_reject_id));
- if (NULL == incoming)
+ op = get_incoming (ntohl (msg->accept_reject_id));
+ if (NULL == op)
{
/* no matching incoming operation for this reject;
could be that the other peer already disconnected... */
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
"Client rejected unknown operation %u\n",
(unsigned int) ntohl (msg->accept_reject_id));
- GNUNET_SERVICE_client_continue (client);
+ GNUNET_SERVICE_client_continue (cs->client);
return;
}
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Peer request (op %u, app %s) rejected by client\n",
- incoming->spec->operation,
- GNUNET_h2s (&incoming->spec->app_id));
- GNUNET_CADET_channel_destroy (incoming->channel);
- GNUNET_SERVICE_client_continue (client);
+ op->listener->operation,
+ GNUNET_h2s (&cs->listener->app_id));
+ GNUNET_CADET_channel_destroy (op->channel);
+ GNUNET_SERVICE_client_continue (cs->client);
}
* Called when a client wants to add or remove an element to a set it inhabits.
*
* @param cls client that sent the message
- * @param m message sent by the client
+ * @param msg message sent by the client
*/
static int
check_client_mutation (void *cls,
- const struct GNUNET_MessageHeader *m)
+ const struct GNUNET_SET_ElementMessage *msg)
{
- /* FIXME: any check we might want to do here? */
+ /* NOTE: Technically, we should probably check with the
+ block library whether the element we are given is well-formed */
return GNUNET_OK;
}
* Called when a client wants to add or remove an element to a set it inhabits.
*
* @param cls client that sent the message
- * @param m message sent by the client
+ * @param msg message sent by the client
*/
static void
handle_client_mutation (void *cls,
- const struct GNUNET_MessageHeader *m)
+ const struct GNUNET_SET_ElementMessage *msg)
{
- struct GNUNET_SERVICE_Client *client = cls;
+ struct ClientState *cs = cls;
struct Set *set;
- set = set_get (client);
- if (NULL == set)
+ if (NULL == (set = cs->set))
{
/* client without a set requested an operation */
GNUNET_break (0);
- GNUNET_SERVICE_client_drop (client);
+ GNUNET_SERVICE_client_drop (cs->client);
return;
}
- GNUNET_SERVICE_client_continue (client);
+ GNUNET_SERVICE_client_continue (cs->client);
if (0 != set->content->iterator_count)
{
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Scheduling mutation on set\n");
pm = GNUNET_new (struct PendingMutation);
- pm->mutation_message = GNUNET_copy_message (m);
+ pm->msg = (struct GNUNET_SET_ElementMessage *) GNUNET_copy_message (&msg->header);
pm->set = set;
GNUNET_CONTAINER_DLL_insert_tail (set->content->pending_mutations_head,
set->content->pending_mutations_tail,
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Executing mutation on set\n");
execute_mutation (set,
- m);
+ msg);
}
handle_client_evaluate (void *cls,
const struct GNUNET_SET_EvaluateMessage *msg)
{
- struct GNUNET_SERVICE_Client *client = cls;
+ struct ClientState *cs = cls;
struct Operation *op = GNUNET_new (struct Operation);
const struct GNUNET_MQ_MessageHandler cadet_handlers[] = {
GNUNET_MQ_hd_var_size (incoming_msg,
GNUNET_MQ_handler_end ()
};
struct Set *set;
- struct OperationSpecification *spec;
const struct GNUNET_MessageHeader *context;
- set = set_get (client);
- if (NULL == set)
+ if (NULL == (set = cs->set))
{
GNUNET_break (0);
GNUNET_free (op);
- GNUNET_SERVICE_client_drop (client);
+ GNUNET_SERVICE_client_drop (cs->client);
return;
}
- spec = GNUNET_new (struct OperationSpecification);
- spec->operation = set->operation;
- spec->app_id = msg->app_id;
- spec->salt = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_NONCE,
- UINT32_MAX);
- spec->peer = msg->target_peer;
- spec->set = set;
- spec->result_mode = ntohl (msg->result_mode);
- spec->client_request_id = ntohl (msg->request_id);
- spec->byzantine = msg->byzantine;
- spec->byzantine_lower_bound = msg->byzantine_lower_bound;
- spec->force_full = msg->force_full;
- spec->force_delta = msg->force_delta;
+ op->salt = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_NONCE,
+ UINT32_MAX);
+ op->peer = msg->target_peer;
+ op->result_mode = ntohl (msg->result_mode);
+ op->client_request_id = ntohl (msg->request_id);
+ op->byzantine = msg->byzantine;
+ op->byzantine_lower_bound = msg->byzantine_lower_bound;
+ op->force_full = msg->force_full;
+ op->force_delta = msg->force_delta;
context = GNUNET_MQ_extract_nested_mh (msg);
- op->spec = spec;
- // Advance generation values, so that
- // mutations won't interfer with the running operation.
+ /* Advance generation values, so that
+ mutations won't interfer with the running operation. */
+ op->set = set;
op->generation_created = set->current_generation;
advance_generation (set);
- op->operation = set->operation;
- op->vt = set->vt;
GNUNET_CONTAINER_DLL_insert (set->ops_head,
set->ops_tail,
op);
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Creating new CADET channel to port %s\n",
- GNUNET_h2s (&msg->app_id));
+ "Creating new CADET channel to port %s for set operation type %u\n",
+ GNUNET_h2s (&msg->app_id),
+ set->operation);
op->channel = GNUNET_CADET_channel_creatE (cadet,
op,
&msg->target_peer,
&channel_end_cb,
cadet_handlers);
op->mq = GNUNET_CADET_get_mq (op->channel);
- set->vt->evaluate (op,
- context);
- GNUNET_SERVICE_client_continue (client);
+ op->state = set->vt->evaluate (op,
+ context);
+ if (NULL == op->state)
+ {
+ GNUNET_break (0);
+ GNUNET_SERVICE_client_drop (cs->client);
+ return;
+ }
+ GNUNET_SERVICE_client_continue (cs->client);
}
handle_client_iter_ack (void *cls,
const struct GNUNET_SET_IterAckMessage *ack)
{
- struct GNUNET_SERVICE_Client *client = cls;
+ struct ClientState *cs = cls;
struct Set *set;
- set = set_get (client);
- if (NULL == set)
+ if (NULL == (set = cs->set))
{
/* client without a set acknowledged receiving a value */
GNUNET_break (0);
- GNUNET_SERVICE_client_drop (client);
+ GNUNET_SERVICE_client_drop (cs->client);
return;
}
if (NULL == set->iter)
/* client sent an ack, but we were not expecting one (as
set iteration has finished) */
GNUNET_break (0);
- GNUNET_SERVICE_client_drop (client);
+ GNUNET_SERVICE_client_drop (cs->client);
return;
}
- GNUNET_SERVICE_client_continue (client);
+ GNUNET_SERVICE_client_continue (cs->client);
if (ntohl (ack->send_more))
{
send_client_element (set);
handle_client_copy_lazy_prepare (void *cls,
const struct GNUNET_MessageHeader *mh)
{
- struct GNUNET_SERVICE_Client *client = cls;
+ struct ClientState *cs = cls;
struct Set *set;
struct LazyCopyRequest *cr;
struct GNUNET_MQ_Envelope *ev;
struct GNUNET_SET_CopyLazyResponseMessage *resp_msg;
- set = set_get (client);
- if (NULL == set)
+ if (NULL == (set = cs->set))
{
/* client without a set requested an operation */
GNUNET_break (0);
- GNUNET_SERVICE_client_drop (client);
+ GNUNET_SERVICE_client_drop (cs->client);
return;
}
-
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Client requested creation of lazy copy\n");
cr = GNUNET_new (struct LazyCopyRequest);
-
- cr->cookie = lazy_copy_cookie;
- lazy_copy_cookie += 1;
+ cr->cookie = ++lazy_copy_cookie;
cr->source_set = set;
-
GNUNET_CONTAINER_DLL_insert (lazy_copy_head,
lazy_copy_tail,
cr);
-
-
ev = GNUNET_MQ_msg (resp_msg,
GNUNET_MESSAGE_TYPE_SET_COPY_LAZY_RESPONSE);
resp_msg->cookie = cr->cookie;
- GNUNET_MQ_send (set->client_mq, ev);
-
-
- GNUNET_SERVICE_client_continue (client);
-
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Client requested lazy copy\n");
+ GNUNET_MQ_send (set->cs->mq,
+ ev);
+ GNUNET_SERVICE_client_continue (cs->client);
}
handle_client_copy_lazy_connect (void *cls,
const struct GNUNET_SET_CopyLazyConnectMessage *msg)
{
- struct GNUNET_SERVICE_Client *client = cls;
+ struct ClientState *cs = cls;
struct LazyCopyRequest *cr;
struct Set *set;
int found;
- if (NULL != set_get (client))
+ if (NULL != cs->set)
{
/* There can only be one set per client */
GNUNET_break (0);
- GNUNET_SERVICE_client_drop (client);
+ GNUNET_SERVICE_client_drop (cs->client);
return;
}
-
found = GNUNET_NO;
-
for (cr = lazy_copy_head; NULL != cr; cr = cr->next)
{
if (cr->cookie == msg->cookie)
break;
}
}
-
if (GNUNET_NO == found)
{
/* client asked for copy with cookie we don't know */
GNUNET_break (0);
- GNUNET_SERVICE_client_drop (client);
+ GNUNET_SERVICE_client_drop (cs->client);
return;
}
-
GNUNET_CONTAINER_DLL_remove (lazy_copy_head,
lazy_copy_tail,
cr);
-
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Client %p requested use of lazy copy\n",
+ cs);
set = GNUNET_new (struct Set);
-
switch (cr->source_set->operation)
{
case GNUNET_SET_OPERATION_INTERSECTION:
GNUNET_break (0);
GNUNET_free (set);
GNUNET_free (cr);
- GNUNET_SERVICE_client_drop (client);
+ GNUNET_SERVICE_client_drop (cs->client);
return;
}
set->operation = cr->source_set->operation;
- set->state = set->vt->copy_state (cr->source_set);
+ set->state = set->vt->copy_state (cr->source_set->state);
set->content = cr->source_set->content;
- set->content->refcount += 1;
+ set->content->refcount++;
set->current_generation = cr->source_set->current_generation;
set->excluded_generations_size = cr->source_set->excluded_generations_size;
- set->excluded_generations = GNUNET_memdup (cr->source_set->excluded_generations,
- set->excluded_generations_size * sizeof (struct GenerationRange));
+ set->excluded_generations
+ = GNUNET_memdup (cr->source_set->excluded_generations,
+ set->excluded_generations_size * sizeof (struct GenerationRange));
/* Advance the generation of the new set, so that mutations to the
of the cloned set and the source set are independent. */
advance_generation (set);
-
-
- set->client = client;
- set->client_mq = GNUNET_SERVICE_client_get_mq (client);
- GNUNET_CONTAINER_DLL_insert (sets_head,
- sets_tail,
- set);
-
+ set->cs = cs;
+ cs->set = set;
GNUNET_free (cr);
-
- GNUNET_SERVICE_client_continue (client);
-
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Client connected to lazy set\n");
+ GNUNET_SERVICE_client_continue (cs->client);
}
handle_client_cancel (void *cls,
const struct GNUNET_SET_CancelMessage *msg)
{
- struct GNUNET_SERVICE_Client *client = cls;
+ struct ClientState *cs = cls;
struct Set *set;
struct Operation *op;
int found;
- set = set_get (client);
- if (NULL == set)
+ if (NULL == (set = cs->set))
{
/* client without a set requested an operation */
GNUNET_break (0);
- GNUNET_SERVICE_client_drop (client);
+ GNUNET_SERVICE_client_drop (cs->client);
return;
}
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Client requested cancel for op %u\n",
- (uint32_t) ntohl (msg->request_id));
found = GNUNET_NO;
for (op = set->ops_head; NULL != op; op = op->next)
{
- if (op->spec->client_request_id == ntohl (msg->request_id))
+ if (op->client_request_id == ntohl (msg->request_id))
{
found = GNUNET_YES;
break;
* yet and try to cancel the (just barely non-existent) operation.
* So this is not a hard error.
*/
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Client canceled non-existent op\n");
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "Client canceled non-existent op %u\n",
+ (uint32_t) ntohl (msg->request_id));
}
else
{
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Client requested cancel for op %u\n",
+ (uint32_t) ntohl (msg->request_id));
_GSS_operation_destroy (op,
GNUNET_YES);
}
- GNUNET_SERVICE_client_continue (client);
+ GNUNET_SERVICE_client_continue (cs->client);
}
handle_client_accept (void *cls,
const struct GNUNET_SET_AcceptMessage *msg)
{
- struct GNUNET_SERVICE_Client *client = cls;
+ struct ClientState *cs = cls;
struct Set *set;
struct Operation *op;
struct GNUNET_SET_ResultMessage *result_message;
struct GNUNET_MQ_Envelope *ev;
+ struct Listener *listener;
- set = set_get (client);
- if (NULL == set)
+ if (NULL == (set = cs->set))
{
/* client without a set requested to accept */
GNUNET_break (0);
- GNUNET_SERVICE_client_drop (client);
+ GNUNET_SERVICE_client_drop (cs->client);
return;
}
op = get_incoming (ntohl (msg->accept_reject_id));
{
/* It is not an error if the set op does not exist -- it may
* have been destroyed when the partner peer disconnected. */
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Client accepted request that is no longer active\n");
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "Client %p accepted request %u of listener %p that is no longer active\n",
+ cs,
+ ntohl (msg->accept_reject_id),
+ cs->listener);
ev = GNUNET_MQ_msg (result_message,
GNUNET_MESSAGE_TYPE_SET_RESULT);
result_message->request_id = msg->request_id;
- result_message->element_type = 0;
result_message->result_status = htons (GNUNET_SET_STATUS_FAILURE);
- GNUNET_MQ_send (set->client_mq, ev);
- GNUNET_SERVICE_client_continue (client);
+ GNUNET_MQ_send (set->cs->mq,
+ ev);
+ GNUNET_SERVICE_client_continue (cs->client);
return;
}
-
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Client accepting request %u\n",
(uint32_t) ntohl (msg->accept_reject_id));
- GNUNET_assert (GNUNET_YES == op->is_incoming);
- op->is_incoming = GNUNET_NO;
- GNUNET_CONTAINER_DLL_remove (incoming_head,
- incoming_tail,
+ listener = op->listener;
+ op->listener = NULL;
+ GNUNET_CONTAINER_DLL_remove (listener->op_head,
+ listener->op_tail,
op);
- op->spec->set = set;
+ op->set = set;
GNUNET_CONTAINER_DLL_insert (set->ops_head,
set->ops_tail,
op);
- op->spec->client_request_id = ntohl (msg->request_id);
- op->spec->result_mode = ntohl (msg->result_mode);
- op->spec->byzantine = msg->byzantine;
- op->spec->byzantine_lower_bound = msg->byzantine_lower_bound;
- op->spec->force_full = msg->force_full;
- op->spec->force_delta = msg->force_delta;
-
- // Advance generation values, so that
- // mutations won't interfer with the running operation.
+ op->client_request_id = ntohl (msg->request_id);
+ op->result_mode = ntohl (msg->result_mode);
+ op->byzantine = msg->byzantine;
+ op->byzantine_lower_bound = msg->byzantine_lower_bound;
+ op->force_full = msg->force_full;
+ op->force_delta = msg->force_delta;
+
+ /* Advance generation values, so that future mutations do not
+ interfer with the running operation. */
op->generation_created = set->current_generation;
advance_generation (set);
-
- op->vt = set->vt;
- op->operation = set->operation;
- op->vt->accept (op);
- GNUNET_SERVICE_client_continue (client);
+ GNUNET_assert (NULL == op->state);
+ op->state = set->vt->accept (op);
+ if (NULL == op->state)
+ {
+ GNUNET_break (0);
+ GNUNET_SERVICE_client_drop (cs->client);
+ return;
+ }
+ /* Now allow CADET to continue, as we did not do this in
+ #handle_incoming_msg (as we wanted to first see if the
+ local client would accept the request). */
+ GNUNET_CADET_receive_done (op->channel);
+ GNUNET_SERVICE_client_continue (cs->client);
}
/**
* Called to clean up, after a shutdown has been requested.
*
- * @param cls closure
+ * @param cls closure, NULL
*/
static void
shutdown_task (void *cls)
{
- while (NULL != incoming_head)
- incoming_destroy (incoming_head);
- while (NULL != listeners_head)
- listener_destroy (listeners_head);
- while (NULL != sets_head)
- set_destroy (sets_head);
-
- /* it's important to destroy cadet at the end, as all channels
- * must be destroyed before the cadet handle! */
+ /* Delay actual shutdown to allow service to disconnect clients */
if (NULL != cadet)
{
GNUNET_CADET_disconnect (cadet);
cadet = NULL;
}
- GNUNET_STATISTICS_destroy (_GSS_statistics, GNUNET_YES);
+ GNUNET_STATISTICS_destroy (_GSS_statistics,
+ GNUNET_YES);
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"handled shutdown request\n");
}
const struct GNUNET_CONFIGURATION_Handle *cfg,
struct GNUNET_SERVICE_Handle *service)
{
- configuration = cfg;
+ /* FIXME: need to modify SERVICE (!) API to allow
+ us to run a shutdown task *after* clients were
+ forcefully disconnected! */
GNUNET_SCHEDULER_add_shutdown (&shutdown_task,
NULL);
- _GSS_statistics = GNUNET_STATISTICS_create ("set", cfg);
+ _GSS_statistics = GNUNET_STATISTICS_create ("set",
+ cfg);
cadet = GNUNET_CADET_connecT (cfg);
if (NULL == cadet)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
_("Could not connect to CADET service\n"));
+ GNUNET_SCHEDULER_shutdown ();
return;
}
}
NULL),
GNUNET_MQ_hd_var_size (client_mutation,
GNUNET_MESSAGE_TYPE_SET_ADD,
- struct GNUNET_MessageHeader,
+ struct GNUNET_SET_ElementMessage,
NULL),
GNUNET_MQ_hd_fixed_size (client_create_set,
GNUNET_MESSAGE_TYPE_SET_CREATE,
NULL),
GNUNET_MQ_hd_var_size (client_mutation,
GNUNET_MESSAGE_TYPE_SET_REMOVE,
- struct GNUNET_MessageHeader,
+ struct GNUNET_SET_ElementMessage,
NULL),
GNUNET_MQ_hd_fixed_size (client_cancel,
GNUNET_MESSAGE_TYPE_SET_CANCEL,
/*
This file is part of GNUnet
- Copyright (C) 2013, 2014 GNUnet e.V.
+ Copyright (C) 2013-2017 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
struct Operation;
-/**
- * Detail information about an operation.
- */
-struct OperationSpecification
-{
-
- /**
- * The remove peer we evaluate the operation with.
- */
- struct GNUNET_PeerIdentity peer;
-
- /**
- * Application ID for the operation, used to distinguish
- * multiple operations of the same type with the same peer.
- */
- struct GNUNET_HashCode app_id;
-
- /**
- * Context message, may be NULL.
- */
- struct GNUNET_MessageHeader *context_msg;
-
- /**
- * Set associated with the operation, NULL until the spec has been
- * associated with a set.
- */
- struct Set *set;
-
- /**
- * Salt to use for the operation.
- */
- uint32_t salt;
-
- /**
- * Remote peers element count
- */
- uint32_t remote_element_count;
-
- /**
- * ID used to identify an operation between service and client
- */
- uint32_t client_request_id;
-
- /**
- * The type of the operation.
- */
- enum GNUNET_SET_OperationType operation;
-
- /**
- * When are elements sent to the client, and which elements are sent?
- */
- enum GNUNET_SET_ResultMode result_mode;
-
- /**
- * Always use delta operation instead of sending full sets,
- * even it it's less efficient.
- */
- int force_delta;
-
- /**
- * Always send full sets, even if delta operations would
- * be more efficient.
- */
- int force_full;
-
- /**
- * #GNUNET_YES to fail operations where Byzantine faults
- * are suspected
- */
- int byzantine;
-
- /**
- * Lower bound for the set size, used only when
- * byzantine mode is enabled.
- */
- int byzantine_lower_bound;
-};
-
-
/**
* Signature of functions that create the implementation-specific
* state for a set supporting a specific operation.
* @return a set state specific to the supported operation, NULL on error
*/
typedef struct SetState *
-(*CreateImpl) (void);
+(*SetCreateImpl) (void);
/**
* @param ee element message from the client
*/
typedef void
-(*AddRemoveImpl) (struct SetState *state,
+(*SetAddRemoveImpl) (struct SetState *state,
struct ElementEntry *ee);
/**
- * Signature of functions that handle disconnection of the remote
- * peer.
+ * Make a copy of a set's internal state.
*
- * @param op the set operation, contains implementation-specific data
+ * @param state set state to copy
+ * @return copy of the internal state
*/
-typedef void
-(*PeerDisconnectImpl) (struct Operation *op);
+typedef struct SetState *
+(*SetCopyStateImpl) (struct SetState *state);
/**
* @param state the set state, contains implementation-specific data
*/
typedef void
-(*DestroySetImpl) (struct SetState *state);
+(*SetDestroyImpl) (struct SetState *state);
/**
*
* @param op operation that is created by accepting the operation,
* should be initialized by the implementation
+ * @return operation-specific state to keep in @a op
*/
-typedef void
+typedef struct OperationState *
(*OpAcceptImpl) (struct Operation *op);
* begin the evaluation
* @param opaque_context message to be transmitted to the listener
* to convince him to accept, may be NULL
+ * @return operation-specific state to keep in @a op
*/
-typedef void
+typedef struct OperationState *
(*OpEvaluateImpl) (struct Operation *op,
const struct GNUNET_MessageHeader *opaque_context);
-
/**
- * Signature of functions that implement operation cancellation
+ * Signature of functions that implement operation cancelation.
+ * This includes notifying the client about the operation's final
+ * state.
*
* @param op operation state
*/
typedef void
-(*CancelImpl) (struct Operation *op);
+(*OpCancelImpl) (struct Operation *op);
-typedef struct SetState *
-(*CopyStateImpl) (struct Set *op);
+/**
+ * Signature of functions called when the CADET channel died.
+ *
+ * @param op operation state
+ */
+typedef void
+(*OpChannelDeathImpl) (struct Operation *op);
+
/**
/**
* Callback for the set creation.
*/
- CreateImpl create;
+ SetCreateImpl create;
/**
* Callback for element insertion
*/
- AddRemoveImpl add;
+ SetAddRemoveImpl add;
/**
* Callback for element removal.
*/
- AddRemoveImpl remove;
+ SetAddRemoveImpl remove;
+
+ /**
+ * Callback for making a copy of a set's internal state.
+ */
+ SetCopyStateImpl copy_state;
+
+ /**
+ * Callback for destruction of the set state.
+ */
+ SetDestroyImpl destroy_set;
/**
* Callback for accepting a set operation request
OpEvaluateImpl evaluate;
/**
- * Callback for destruction of the set state.
- */
- DestroySetImpl destroy_set;
-
- /**
- * Callback for handling the remote peer's disconnect.
+ * Callback for canceling an operation.
*/
- PeerDisconnectImpl peer_disconnect;
+ OpCancelImpl cancel;
/**
- * Callback for canceling an operation by its ID.
+ * Callback called in case the CADET channel died.
*/
- CancelImpl cancel;
+ OpChannelDeathImpl channel_death;
- CopyStateImpl copy_state;
};
};
+/**
+ * A listener is inhabited by a client, and waits for evaluation
+ * requests from remote peers.
+ */
struct Listener;
+/**
+ * State we keep per client.
+ */
+struct ClientState
+{
+ /**
+ * Set, if associated with the client, otherwise NULL.
+ */
+ struct Set *set;
+
+ /**
+ * Listener, if associated with the client, otherwise NULL.
+ */
+ struct Listener *listener;
+
+ /**
+ * Client handle.
+ */
+ struct GNUNET_SERVICE_Client *client;
+
+ /**
+ * Message queue.
+ */
+ struct GNUNET_MQ_Handle *mq;
+
+};
+
+
/**
* Operation context used to execute a set operation.
*/
struct Operation
{
+
/**
- * V-Table for the operation belonging to the tunnel contest.
- *
- * Used for all operation specific operations after receiving the ops request
+ * Kept in a DLL of the listener, if @e listener is non-NULL.
*/
- const struct SetVT *vt;
+ struct Operation *next;
+
+ /**
+ * Kept in a DLL of the listener, if @e listener is non-NULL.
+ */
+ struct Operation *prev;
/**
* Channel to the peer.
struct GNUNET_MQ_Handle *mq;
/**
- * Detail information about the set operation, including the set to
- * use. When 'spec' is NULL, the operation is not yet entirely
- * initialized.
+ * Context message, may be NULL.
+ */
+ struct GNUNET_MessageHeader *context_msg;
+
+ /**
+ * Set associated with the operation, NULL until the spec has been
+ * associated with a set.
*/
- struct OperationSpecification *spec;
+ struct Set *set;
/**
* Operation-specific operation state. Note that the exact
*/
struct OperationState *state;
- /**
- * Evaluate operations are held in a linked list.
- */
- struct Operation *next;
-
- /**
- * Evaluate operations are held in a linked list.
- */
- struct Operation *prev;
-
/**
* The identity of the requesting peer. Needs to
* be stored here as the op spec might not have been created yet.
struct GNUNET_SCHEDULER_Task *timeout_task;
/**
- * The type of the operation.
+ * Salt to use for the operation.
*/
- enum GNUNET_SET_OperationType operation;
+ uint32_t salt;
+
+ /**
+ * Remote peers element count
+ */
+ uint32_t remote_element_count;
+
+ /**
+ * ID used to identify an operation between service and client
+ */
+ uint32_t client_request_id;
+
+ /**
+ * When are elements sent to the client, and which elements are sent?
+ */
+ enum GNUNET_SET_ResultMode result_mode;
+
+ /**
+ * Always use delta operation instead of sending full sets,
+ * even it it's less efficient.
+ */
+ int force_delta;
+
+ /**
+ * Always send full sets, even if delta operations would
+ * be more efficient.
+ */
+ int force_full;
+
+ /**
+ * #GNUNET_YES to fail operations where Byzantine faults
+ * are suspected
+ */
+ int byzantine;
+
+ /**
+ * Lower bound for the set size, used only when
+ * byzantine mode is enabled.
+ */
+ int byzantine_lower_bound;
/**
* Unique request id for the request from a remote peer, sent to the
*/
uint32_t suggest_id;
- /**
- * #GNUNET_YES if this is not a "real" set operation yet, and we still
- * need to wait for the other peer to give us more details.
- */
- int is_incoming;
-
/**
* Generation in which the operation handle
* was created.
*/
unsigned int generation_created;
- /**
- * Incremented whenever (during shutdown) some component still
- * needs to do something with this before the operation is freed.
- * (Used as a reference counter, but only during termination.)
- */
- unsigned int keep;
};
/**
- * SetContent stores the actual set elements,
- * which may be shared by multiple generations derived
- * from one set.
+ * SetContent stores the actual set elements, which may be shared by
+ * multiple generations derived from one set.
*/
struct SetContent
{
- /**
- * Number of references to the content.
- */
- unsigned int refcount;
/**
* Maps `struct GNUNET_HashCode *` to `struct ElementEntry *`.
*/
struct GNUNET_CONTAINER_MultiHashMap *elements;
- unsigned int latest_generation;
-
/**
* Mutations requested by the client that we're
* unable to execute right now because we're iterating
*/
struct PendingMutation *pending_mutations_tail;
+ /**
+ * Number of references to the content.
+ */
+ unsigned int refcount;
+
+ /**
+ * FIXME: document!
+ */
+ unsigned int latest_generation;
+
/**
* Number of concurrently active iterators.
*/
};
+/**
+ * Information about a mutation to apply to a set.
+ */
struct PendingMutation
{
+ /**
+ * Mutations are kept in a DLL.
+ */
struct PendingMutation *prev;
+
+ /**
+ * Mutations are kept in a DLL.
+ */
struct PendingMutation *next;
+ /**
+ * Set this mutation is about.
+ */
struct Set *set;
/**
* May only be a #GNUNET_MESSAGE_TYPE_SET_ADD or
* #GNUNET_MESSAGE_TYPE_SET_REMOVE.
*/
- struct GNUNET_MessageHeader *mutation_message;
+ struct GNUNET_SET_ElementMessage *msg;
};
* Client that owns the set. Only one client may own a set,
* and there can only be one set per client.
*/
- struct GNUNET_SERVICE_Client *client;
+ struct ClientState *cs;
/**
- * Message queue for the client.
+ * Content, possibly shared by multiple sets,
+ * and thus reference counted.
*/
- struct GNUNET_MQ_Handle *client_mq;
+ struct SetContent *content;
/**
* Virtual table for this set. Determined by the operation type of
struct Operation *ops_tail;
/**
- * Current generation, that is, number of previously executed
- * operations and lazy copies on the underlying set content.
+ * List of generations we have to exclude, due to lazy copies.
*/
- unsigned int current_generation;
+ struct GenerationRange *excluded_generations;
/**
- * List of generations we have to exclude, due to lazy copies.
+ * Current generation, that is, number of previously executed
+ * operations and lazy copies on the underlying set content.
*/
- struct GenerationRange *excluded_generations;
+ unsigned int current_generation;
/**
* Number of elements in array @a excluded_generations.
*/
enum GNUNET_SET_OperationType operation;
- /**
- * Each @e iter is assigned a unique number, so that the client
- * can distinguish iterations.
- */
- uint16_t iteration_id;
-
/**
* Generation we're currently iteration over.
*/
unsigned int iter_generation;
/**
- * Content, possibly shared by multiple sets,
- * and thus reference counted.
+ * Each @e iter is assigned a unique number, so that the client
+ * can distinguish iterations.
*/
- struct SetContent *content;
+ uint16_t iteration_id;
+
};
/**
- * Destroy the given operation. Call the implementation-specific
- * cancel function of the operation. Disconnects from the remote
- * peer. Does not disconnect the client, as there may be multiple
- * operations per set.
+ * Destroy the given operation. Used for any operation where both
+ * peers were known and that thus actually had a vt and channel. Must
+ * not be used for operations where 'listener' is still set and we do
+ * not know the other peer.
+ *
+ * Call the implementation-specific cancel function of the operation.
+ * Disconnects from the remote peer. Does not disconnect the client,
+ * as there may be multiple operations per set.
*
* @param op operation to destroy
* @param gc #GNUNET_YES to perform garbage collection on the set
_GSS_intersection_vt (void);
-int
-_GSS_is_element_of_set (struct ElementEntry *ee,
- struct Set *set);
-
+/**
+ * Is element @a ee part of the set used by @a op?
+ *
+ * @param ee element to test
+ * @param op operation the defines the set and its generation
+ * @return #GNUNET_YES if the element is in the set, #GNUNET_NO if not
+ */
int
_GSS_is_element_of_operation (struct ElementEntry *ee,
struct Operation *op);
*/
PHASE_BF_EXCHANGE,
+ /**
+ * We must next send the P2P DONE message (after finishing mostly
+ * with the local client). Then we will wait for the channel to close.
+ */
+ PHASE_MUST_SEND_DONE,
+
+ /**
+ * We have received the P2P DONE message, and must finish with the
+ * local client before terminating the channel.
+ */
+ PHASE_DONE_RECEIVED,
+
/**
* The protocol is over. Results may still have to be sent to the
* client.
* Did we send the client that we are done?
*/
int client_done_sent;
+
+ /**
+ * Set whenever we reach the state where the death of the
+ * channel is perfectly find and should NOT result in the
+ * operation being cancelled.
+ */
+ int channel_death_expected;
};
struct GNUNET_MQ_Envelope *ev;
struct GNUNET_SET_ResultMessage *rm;
- if (GNUNET_SET_RESULT_REMOVED != op->spec->result_mode)
+ if (GNUNET_SET_RESULT_REMOVED != op->result_mode)
return; /* Wrong mode for transmitting removed elements */
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Sending removed element (size %u) to client\n",
element->size);
- GNUNET_assert (0 != op->spec->client_request_id);
+ GNUNET_assert (0 != op->client_request_id);
ev = GNUNET_MQ_msg_extra (rm,
element->size,
GNUNET_MESSAGE_TYPE_SET_RESULT);
return;
}
rm->result_status = htons (GNUNET_SET_STATUS_OK);
- rm->request_id = htonl (op->spec->client_request_id);
+ rm->request_id = htonl (op->client_request_id);
rm->element_type = element->element_type;
GNUNET_memcpy (&rm[1],
- element->data,
- element->size);
- GNUNET_MQ_send (op->spec->set->client_mq,
+ element->data,
+ element->size);
+ GNUNET_MQ_send (op->set->cs->mq,
ev);
}
ev = GNUNET_MQ_msg (msg,
GNUNET_MESSAGE_TYPE_SET_RESULT);
msg->result_status = htons (GNUNET_SET_STATUS_FAILURE);
- msg->request_id = htonl (op->spec->client_request_id);
+ msg->request_id = htonl (op->client_request_id);
msg->element_type = htons (0);
- GNUNET_MQ_send (op->spec->set->client_mq,
+ GNUNET_MQ_send (op->set->cs->mq,
ev);
_GSS_operation_destroy (op,
GNUNET_YES);
should use more bits to maximize its set reduction
potential and minimize overall bandwidth consumption. */
bf_elementbits = 2 + ceil (log2((double)
- (op->spec->remote_element_count /
- (double) op->state->my_element_count)));
+ (op->remote_element_count /
+ (double) op->state->my_element_count)));
if (bf_elementbits < 1)
bf_elementbits = 1; /* make sure k is not 0 */
/* optimize BF-size to ~50% of bits set */
struct GNUNET_MQ_Envelope *ev;
struct GNUNET_SET_ResultMessage *rm;
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Intersection succeeded, sending DONE to local client\n");
ev = GNUNET_MQ_msg (rm,
GNUNET_MESSAGE_TYPE_SET_RESULT);
- rm->request_id = htonl (op->spec->client_request_id);
+ rm->request_id = htonl (op->client_request_id);
rm->result_status = htons (GNUNET_SET_STATUS_DONE);
rm->element_type = htons (0);
- GNUNET_MQ_send (op->spec->set->client_mq,
+ GNUNET_MQ_send (op->set->cs->mq,
ev);
_GSS_operation_destroy (op,
GNUNET_YES);
}
+/**
+ * Remember that we are done dealing with the local client
+ * AND have sent the other peer our message that we are done,
+ * so we are not just waiting for the channel to die before
+ * telling the local client that we are done as our last act.
+ *
+ * @param cls the `struct Operation`.
+ */
+static void
+finished_local_operations (void *cls)
+{
+ struct Operation *op = cls;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "DONE sent to other peer, now waiting for other end to close the channel\n");
+ op->state->phase = PHASE_FINISHED;
+ op->state->channel_death_expected = GNUNET_YES;
+}
+
+
+/**
+ * Notify the other peer that we are done. Once this message
+ * is out, we still need to notify the local client that we
+ * are done.
+ *
+ * @param op operation to notify for.
+ */
+static void
+send_p2p_done (struct Operation *op)
+{
+ struct GNUNET_MQ_Envelope *ev;
+ struct IntersectionDoneMessage *idm;
+
+ GNUNET_assert (PHASE_MUST_SEND_DONE == op->state->phase);
+ GNUNET_assert (GNUNET_NO == op->state->channel_death_expected);
+ ev = GNUNET_MQ_msg (idm,
+ GNUNET_MESSAGE_TYPE_SET_INTERSECTION_P2P_DONE);
+ idm->final_element_count = htonl (op->state->my_element_count);
+ idm->element_xor_hash = op->state->my_xor;
+ GNUNET_MQ_notify_sent (ev,
+ &finished_local_operations,
+ op);
+ GNUNET_MQ_send (op->mq,
+ ev);
+}
+
+
/**
* Send all elements in the full result iterator.
*
{
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Sending done and destroy because iterator ran out\n");
- op->keep--;
GNUNET_CONTAINER_multihashmap_iterator_destroy (op->state->full_result_iter);
op->state->full_result_iter = NULL;
- send_client_done_and_destroy (op);
+ if (PHASE_DONE_RECEIVED == op->state->phase)
+ {
+ op->state->phase = PHASE_FINISHED;
+ send_client_done_and_destroy (op);
+ }
+ else if (PHASE_MUST_SEND_DONE == op->state->phase)
+ {
+ send_p2p_done (op);
+ }
+ else
+ {
+ GNUNET_assert (0);
+ }
return;
}
ee = nxt;
"Sending element %s:%u to client (full set)\n",
GNUNET_h2s (&ee->element_hash),
element->size);
- GNUNET_assert (0 != op->spec->client_request_id);
+ GNUNET_assert (0 != op->client_request_id);
ev = GNUNET_MQ_msg_extra (rm,
element->size,
GNUNET_MESSAGE_TYPE_SET_RESULT);
GNUNET_assert (NULL != ev);
rm->result_status = htons (GNUNET_SET_STATUS_OK);
- rm->request_id = htonl (op->spec->client_request_id);
+ rm->request_id = htonl (op->client_request_id);
rm->element_type = element->element_type;
GNUNET_memcpy (&rm[1],
- element->data,
- element->size);
+ element->data,
+ element->size);
GNUNET_MQ_notify_sent (ev,
&send_remaining_elements,
op);
- GNUNET_MQ_send (op->spec->set->client_mq,
+ GNUNET_MQ_send (op->set->cs->mq,
ev);
}
/**
- * Inform the peer that this operation is complete.
+ * Fills the "my_elements" hashmap with the initial set of
+ * (non-deleted) elements from the set of the specification.
*
- * @param op the intersection operation to fail
+ * @param cls closure with the `struct Operation *`
+ * @param key current key code for the element
+ * @param value value in the hash map with the `struct ElementEntry *`
+ * @return #GNUNET_YES (we should continue to iterate)
+ */
+static int
+initialize_map_unfiltered (void *cls,
+ const struct GNUNET_HashCode *key,
+ void *value)
+{
+ struct ElementEntry *ee = value;
+ struct Operation *op = cls;
+
+ if (GNUNET_NO == _GSS_is_element_of_operation (ee, op))
+ return GNUNET_YES; /* element not live in operation's generation */
+ GNUNET_CRYPTO_hash_xor (&op->state->my_xor,
+ &ee->element_hash,
+ &op->state->my_xor);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Initial full initialization of my_elements, adding %s:%u\n",
+ GNUNET_h2s (&ee->element_hash),
+ ee->element.size);
+ GNUNET_break (GNUNET_YES ==
+ GNUNET_CONTAINER_multihashmap_put (op->state->my_elements,
+ &ee->element_hash,
+ ee,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
+ return GNUNET_YES;
+}
+
+
+/**
+ * Send our element count to the peer, in case our element count is
+ * lower than his.
+ *
+ * @param op intersection operation
*/
static void
-send_peer_done (struct Operation *op)
+send_element_count (struct Operation *op)
{
struct GNUNET_MQ_Envelope *ev;
- struct IntersectionDoneMessage *idm;
+ struct IntersectionElementInfoMessage *msg;
- op->state->phase = PHASE_FINISHED;
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Intersection succeeded, sending DONE\n");
- GNUNET_CONTAINER_bloomfilter_free (op->state->local_bf);
- op->state->local_bf = NULL;
+ "Sending our element count (%u)\n",
+ op->state->my_element_count);
+ ev = GNUNET_MQ_msg (msg,
+ GNUNET_MESSAGE_TYPE_SET_INTERSECTION_P2P_ELEMENT_INFO);
+ msg->sender_element_count = htonl (op->state->my_element_count);
+ GNUNET_MQ_send (op->mq, ev);
+}
- ev = GNUNET_MQ_msg (idm,
- GNUNET_MESSAGE_TYPE_SET_INTERSECTION_P2P_DONE);
- idm->final_element_count = htonl (op->state->my_element_count);
- idm->element_xor_hash = op->state->my_xor;
- GNUNET_MQ_send (op->mq,
- ev);
+
+/**
+ * We go first, initialize our map with all elements and
+ * send the first Bloom filter.
+ *
+ * @param op operation to start exchange for
+ */
+static void
+begin_bf_exchange (struct Operation *op)
+{
+ op->state->phase = PHASE_BF_EXCHANGE;
+ GNUNET_CONTAINER_multihashmap_iterate (op->set->content->elements,
+ &initialize_map_unfiltered,
+ op);
+ send_bloomfilter (op);
+}
+
+
+/**
+ * Handle the initial `struct IntersectionElementInfoMessage` from a
+ * remote peer.
+ *
+ * @param cls the intersection operation
+ * @param mh the header of the message
+ */
+void
+handle_intersection_p2p_element_info (void *cls,
+ const struct IntersectionElementInfoMessage *msg)
+{
+ struct Operation *op = cls;
+
+ if (GNUNET_SET_OPERATION_INTERSECTION != op->set->operation)
+ {
+ GNUNET_break_op (0);
+ fail_intersection_operation(op);
+ return;
+ }
+ op->remote_element_count = ntohl (msg->sender_element_count);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Received remote element count (%u), I have %u\n",
+ op->remote_element_count,
+ op->state->my_element_count);
+ if ( ( (PHASE_INITIAL != op->state->phase) &&
+ (PHASE_COUNT_SENT != op->state->phase) ) ||
+ (op->state->my_element_count > op->remote_element_count) ||
+ (0 == op->state->my_element_count) ||
+ (0 == op->remote_element_count) )
+ {
+ GNUNET_break_op (0);
+ fail_intersection_operation(op);
+ return;
+ }
+ GNUNET_break (NULL == op->state->remote_bf);
+ begin_bf_exchange (op);
+ GNUNET_CADET_receive_done (op->channel);
}
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Received BF in phase %u, foreign count is %u, my element count is %u/%u\n",
op->state->phase,
- op->spec->remote_element_count,
+ op->remote_element_count,
op->state->my_element_count,
- GNUNET_CONTAINER_multihashmap_size (op->spec->set->content->elements));
+ GNUNET_CONTAINER_multihashmap_size (op->set->content->elements));
switch (op->state->phase)
{
case PHASE_INITIAL:
/* This is the first BF being sent, build our initial map with
filtering in place */
op->state->my_element_count = 0;
- GNUNET_CONTAINER_multihashmap_iterate (op->spec->set->content->elements,
+ GNUNET_CONTAINER_multihashmap_iterate (op->set->content->elements,
&filtered_map_initialization,
op);
break;
&iterator_bf_reduce,
op);
break;
+ case PHASE_MUST_SEND_DONE:
+ GNUNET_break_op (0);
+ fail_intersection_operation(op);
+ return;
+ case PHASE_DONE_RECEIVED:
+ GNUNET_break_op (0);
+ fail_intersection_operation(op);
+ return;
case PHASE_FINISHED:
GNUNET_break_op (0);
fail_intersection_operation(op);
op->state->remote_bf = NULL;
if ( (0 == op->state->my_element_count) || /* fully disjoint */
- ( (op->state->my_element_count == op->spec->remote_element_count) &&
+ ( (op->state->my_element_count == op->remote_element_count) &&
(0 == memcmp (&op->state->my_xor,
&op->state->other_xor,
sizeof (struct GNUNET_HashCode))) ) )
{
/* we are done */
- send_peer_done (op);
+ op->state->phase = PHASE_MUST_SEND_DONE;
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Intersection succeeded, sending DONE to other peer\n");
+ GNUNET_CONTAINER_bloomfilter_free (op->state->local_bf);
+ op->state->local_bf = NULL;
+ if (GNUNET_SET_RESULT_FULL == op->result_mode)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Sending full result set (%u elements)\n",
+ GNUNET_CONTAINER_multihashmap_size (op->state->my_elements));
+ op->state->full_result_iter
+ = GNUNET_CONTAINER_multihashmap_iterator_create (op->state->my_elements);
+ send_remaining_elements (op);
+ return;
+ }
+ send_p2p_done (op);
return;
}
op->state->phase = PHASE_BF_EXCHANGE;
{
struct Operation *op = cls;
- if (GNUNET_SET_OPERATION_INTERSECTION != op->operation)
+ if (GNUNET_SET_OPERATION_INTERSECTION != op->set->operation)
{
GNUNET_break_op (0);
return GNUNET_SYSERR;
bf_size,
bf_bits_per_element);
op->state->salt = ntohl (msg->sender_mutator);
- op->spec->remote_element_count = ntohl (msg->sender_element_count);
+ op->remote_element_count = ntohl (msg->sender_element_count);
process_bf (op);
break;
}
op->state->bf_bits_per_element = bf_bits_per_element;
op->state->bf_data_offset = 0;
op->state->salt = ntohl (msg->sender_mutator);
- op->spec->remote_element_count = ntohl (msg->sender_element_count);
+ op->remote_element_count = ntohl (msg->sender_element_count);
}
else
{
(op->state->bf_bits_per_element != bf_bits_per_element) ||
(op->state->bf_data_offset + chunk_size > bf_size) ||
(op->state->salt != ntohl (msg->sender_mutator)) ||
- (op->spec->remote_element_count != ntohl (msg->sender_element_count)) )
+ (op->remote_element_count != ntohl (msg->sender_element_count)) )
{
GNUNET_break_op (0);
fail_intersection_operation (op);
}
-/**
- * Fills the "my_elements" hashmap with the initial set of
- * (non-deleted) elements from the set of the specification.
- *
- * @param cls closure with the `struct Operation *`
- * @param key current key code for the element
- * @param value value in the hash map with the `struct ElementEntry *`
- * @return #GNUNET_YES (we should continue to iterate)
- */
-static int
-initialize_map_unfiltered (void *cls,
- const struct GNUNET_HashCode *key,
- void *value)
-{
- struct ElementEntry *ee = value;
- struct Operation *op = cls;
-
- if (GNUNET_NO == _GSS_is_element_of_operation (ee, op))
- return GNUNET_YES; /* element not live in operation's generation */
- GNUNET_CRYPTO_hash_xor (&op->state->my_xor,
- &ee->element_hash,
- &op->state->my_xor);
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Initial full initialization of my_elements, adding %s:%u\n",
- GNUNET_h2s (&ee->element_hash),
- ee->element.size);
- GNUNET_break (GNUNET_YES ==
- GNUNET_CONTAINER_multihashmap_put (op->state->my_elements,
- &ee->element_hash,
- ee,
- GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
- return GNUNET_YES;
-}
-
-
-/**
- * Send our element count to the peer, in case our element count is
- * lower than his.
- *
- * @param op intersection operation
- */
-static void
-send_element_count (struct Operation *op)
-{
- struct GNUNET_MQ_Envelope *ev;
- struct IntersectionElementInfoMessage *msg;
-
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Sending our element count (%u)\n",
- op->state->my_element_count);
- ev = GNUNET_MQ_msg (msg,
- GNUNET_MESSAGE_TYPE_SET_INTERSECTION_P2P_ELEMENT_INFO);
- msg->sender_element_count = htonl (op->state->my_element_count);
- GNUNET_MQ_send (op->mq, ev);
-}
-
-
-/**
- * We go first, initialize our map with all elements and
- * send the first Bloom filter.
- *
- * @param op operation to start exchange for
- */
-static void
-begin_bf_exchange (struct Operation *op)
-{
- op->state->phase = PHASE_BF_EXCHANGE;
- GNUNET_CONTAINER_multihashmap_iterate (op->spec->set->content->elements,
- &initialize_map_unfiltered,
- op);
- send_bloomfilter (op);
-}
-
-
-/**
- * Handle the initial `struct IntersectionElementInfoMessage` from a
- * remote peer.
- *
- * @param cls the intersection operation
- * @param mh the header of the message
- */
-void
-handle_intersection_p2p_element_info (void *cls,
- const struct IntersectionElementInfoMessage *msg)
-{
- struct Operation *op = cls;
-
- if (GNUNET_SET_OPERATION_INTERSECTION != op->operation)
- {
- GNUNET_break_op (0);
- fail_intersection_operation(op);
- return;
- }
- op->spec->remote_element_count = ntohl (msg->sender_element_count);
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Received remote element count (%u), I have %u\n",
- op->spec->remote_element_count,
- op->state->my_element_count);
- if ( ( (PHASE_INITIAL != op->state->phase) &&
- (PHASE_COUNT_SENT != op->state->phase) ) ||
- (op->state->my_element_count > op->spec->remote_element_count) ||
- (0 == op->state->my_element_count) ||
- (0 == op->spec->remote_element_count) )
- {
- GNUNET_break_op (0);
- fail_intersection_operation(op);
- return;
- }
- GNUNET_break (NULL == op->state->remote_bf);
- begin_bf_exchange (op);
- GNUNET_CADET_receive_done (op->channel);
-}
-
-
-/**
- * Send a result message to the client indicating that the operation
- * is over. After the result done message has been sent to the
- * client, destroy the evaluate operation.
- *
- * @param op intersection operation
- */
-static void
-finish_and_destroy (struct Operation *op)
-{
- GNUNET_assert (GNUNET_NO == op->state->client_done_sent);
-
- if (GNUNET_SET_RESULT_FULL == op->spec->result_mode)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Sending full result set (%u elements)\n",
- GNUNET_CONTAINER_multihashmap_size (op->state->my_elements));
- op->state->full_result_iter
- = GNUNET_CONTAINER_multihashmap_iterator_create (op->state->my_elements);
- op->keep++;
- send_remaining_elements (op);
- return;
- }
- send_client_done_and_destroy (op);
-}
-
-
/**
* Remove all elements from our hashmap.
*
{
struct Operation *op = cls;
- if (GNUNET_SET_OPERATION_INTERSECTION != op->operation)
+ if (GNUNET_SET_OPERATION_INTERSECTION != op->set->operation)
{
GNUNET_break_op (0);
- fail_intersection_operation(op);
+ fail_intersection_operation (op);
return;
}
if (PHASE_BF_EXCHANGE != op->state->phase)
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Got IntersectionDoneMessage, have %u elements in intersection\n",
op->state->my_element_count);
- op->state->phase = PHASE_FINISHED;
- finish_and_destroy (op);
+ op->state->phase = PHASE_DONE_RECEIVED;
GNUNET_CADET_receive_done (op->channel);
+
+ GNUNET_assert (GNUNET_NO == op->state->client_done_sent);
+ if (GNUNET_SET_RESULT_FULL == op->result_mode)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Sending full result set to client (%u elements)\n",
+ GNUNET_CONTAINER_multihashmap_size (op->state->my_elements));
+ op->state->full_result_iter
+ = GNUNET_CONTAINER_multihashmap_iterator_create (op->state->my_elements);
+ send_remaining_elements (op);
+ return;
+ }
+ op->state->phase = PHASE_FINISHED;
+ send_client_done_and_destroy (op);
}
* begin the evaluation
* @param opaque_context message to be transmitted to the listener
* to convince him to accept, may be NULL
+ * @return operation-specific state to keep in @a op
*/
-static void
+static struct OperationState *
intersection_evaluate (struct Operation *op,
const struct GNUNET_MessageHeader *opaque_context)
{
+ struct OperationState *state;
struct GNUNET_MQ_Envelope *ev;
struct OperationRequestMessage *msg;
- op->state = GNUNET_new (struct OperationState);
- /* we started the operation, thus we have to send the operation request */
- op->state->phase = PHASE_INITIAL;
- op->state->my_element_count = op->spec->set->state->current_set_element_count;
- op->state->my_elements
- = GNUNET_CONTAINER_multihashmap_create (op->state->my_element_count,
- GNUNET_YES);
-
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Initiating intersection operation evaluation\n");
ev = GNUNET_MQ_msg_nested_mh (msg,
GNUNET_MESSAGE_TYPE_SET_P2P_OPERATION_REQUEST,
opaque_context);
{
/* the context message is too large!? */
GNUNET_break (0);
- GNUNET_SERVICE_client_drop (op->spec->set->client);
- return;
+ return NULL;
}
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Initiating intersection operation evaluation\n");
+ state = GNUNET_new (struct OperationState);
+ /* we started the operation, thus we have to send the operation request */
+ state->phase = PHASE_INITIAL;
+ state->my_element_count = op->set->state->current_set_element_count;
+ state->my_elements
+ = GNUNET_CONTAINER_multihashmap_create (state->my_element_count,
+ GNUNET_YES);
+
msg->operation = htonl (GNUNET_SET_OPERATION_INTERSECTION);
- msg->element_count = htonl (op->state->my_element_count);
+ msg->element_count = htonl (state->my_element_count);
GNUNET_MQ_send (op->mq,
ev);
- op->state->phase = PHASE_COUNT_SENT;
+ state->phase = PHASE_COUNT_SENT;
if (NULL != opaque_context)
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Sent op request with context message\n");
else
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Sent op request without context message\n");
+ return state;
}
*
* @param op operation that will be accepted as an intersection operation
*/
-static void
+static struct OperationState *
intersection_accept (struct Operation *op)
{
+ struct OperationState *state;
+
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Accepting set intersection operation\n");
- op->state = GNUNET_new (struct OperationState);
- op->state->phase = PHASE_INITIAL;
- op->state->my_element_count
- = op->spec->set->state->current_set_element_count;
- GNUNET_assert (NULL == op->state->my_elements);
- op->state->my_elements
- = GNUNET_CONTAINER_multihashmap_create (GNUNET_MIN (op->state->my_element_count,
- op->spec->remote_element_count),
+ state = GNUNET_new (struct OperationState);
+ state->phase = PHASE_INITIAL;
+ state->my_element_count
+ = op->set->state->current_set_element_count;
+ state->my_elements
+ = GNUNET_CONTAINER_multihashmap_create (GNUNET_MIN (state->my_element_count,
+ op->remote_element_count),
GNUNET_YES);
- if (op->spec->remote_element_count < op->state->my_element_count)
+ op->state = state;
+ if (op->remote_element_count < state->my_element_count)
{
/* If the other peer (Alice) has fewer elements than us (Bob),
we just send the count as Alice should send the first BF */
send_element_count (op);
- op->state->phase = PHASE_COUNT_SENT;
- return;
+ state->phase = PHASE_COUNT_SENT;
+ return state;
}
/* We have fewer elements, so we start with the BF */
begin_bf_exchange (op);
-}
-
-
-/**
- * Handler for peer-disconnects, notifies the client about the aborted
- * operation. If we did not expect anything from the other peer, we
- * gracefully terminate the operation.
- *
- * @param op the destroyed operation
- */
-static void
-intersection_peer_disconnect (struct Operation *op)
-{
- if (PHASE_FINISHED != op->state->phase)
- {
- fail_intersection_operation (op);
- return;
- }
- /* the session has already been concluded */
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Other peer disconnected (finished)\n");
- if (GNUNET_NO == op->state->client_done_sent)
- finish_and_destroy (op);
+ return state;
}
}
+/**
+ * Callback for channel death for the intersection operation.
+ *
+ * @param op operation that lost the channel
+ */
+static void
+intersection_channel_death (struct Operation *op)
+{
+ if (GNUNET_YES == op->state->channel_death_expected)
+ {
+ /* oh goodie, we are done! */
+ send_client_done_and_destroy (op);
+ }
+ else
+ {
+ /* sorry, channel went down early, too bad. */
+ _GSS_operation_destroy (op,
+ GNUNET_YES);
+ }
+}
+
+
/**
* Get the table with implementing functions for set intersection.
*
.destroy_set = &intersection_set_destroy,
.evaluate = &intersection_evaluate,
.accept = &intersection_accept,
- .peer_disconnect = &intersection_peer_disconnect,
.cancel = &intersection_op_cancel,
+ .channel_death = &intersection_channel_death,
};
return &intersection_vt;
"union operation failed\n");
ev = GNUNET_MQ_msg (msg, GNUNET_MESSAGE_TYPE_SET_RESULT);
msg->result_status = htons (GNUNET_SET_STATUS_FAILURE);
- msg->request_id = htonl (op->spec->client_request_id);
+ msg->request_id = htonl (op->client_request_id);
msg->element_type = htons (0);
- GNUNET_MQ_send (op->spec->set->client_mq, ev);
+ GNUNET_MQ_send (op->set->cs->mq,
+ ev);
_GSS_operation_destroy (op, GNUNET_YES);
}
*/
struct GetElementContext
{
+ /**
+ * FIXME.
+ */
struct GNUNET_HashCode hash;
+
+ /**
+ * FIXME.
+ */
struct KeyEntry *k;
};
}
+/**
+ * FIXME.
+ */
static void
salt_key (const struct IBF_Key *k_in,
uint32_t salt,
}
+/**
+ * FIXME.
+ */
static void
unsalt_key (const struct IBF_Key *k_in,
uint32_t salt,
(void *) op,
(unsigned long) ke->ibf_key.key_val,
GNUNET_h2s (&ke->element->element_hash));
- salt_key (&ke->ibf_key, op->state->salt_send, &salted_key);
+ salt_key (&ke->ibf_key,
+ op->state->salt_send,
+ &salted_key);
ibf_insert (op->state->local_ibf, salted_key);
return GNUNET_YES;
}
/* make sure that the element belongs to the set at the time
* of creating the operation */
- if (GNUNET_NO == _GSS_is_element_of_operation (ee, op))
+ if (GNUNET_NO ==
+ _GSS_is_element_of_operation (ee,
+ op))
return GNUNET_YES;
-
GNUNET_assert (GNUNET_NO == ee->remote);
-
- op_register_element (op, ee, GNUNET_NO);
+ op_register_element (op,
+ ee,
+ GNUNET_NO);
return GNUNET_YES;
}
unsigned int len;
GNUNET_assert (NULL == op->state->key_to_element);
- len = GNUNET_CONTAINER_multihashmap_size (op->spec->set->content->elements);
+ len = GNUNET_CONTAINER_multihashmap_size (op->set->content->elements);
op->state->key_to_element = GNUNET_CONTAINER_multihashmap32_create (len + 1);
- GNUNET_CONTAINER_multihashmap_iterate (op->spec->set->content->elements, init_key_to_element_iterator, op);
+ GNUNET_CONTAINER_multihashmap_iterate (op->set->content->elements,
+ &init_key_to_element_iterator,
+ op);
}
}
-/**
- * Send a strata estimator to the remote peer.
- *
- * @param op the union operation with the remote peer
- */
-static void
-send_strata_estimator (struct Operation *op)
-{
- const struct StrataEstimator *se = op->state->se;
- struct GNUNET_MQ_Envelope *ev;
- struct StrataEstimatorMessage *strata_msg;
- char *buf;
- size_t len;
- uint16_t type;
-
- buf = GNUNET_malloc (se->strata_count * IBF_BUCKET_SIZE * se->ibf_size);
- len = strata_estimator_write (op->state->se,
- buf);
- if (len < se->strata_count * IBF_BUCKET_SIZE * se->ibf_size)
- type = GNUNET_MESSAGE_TYPE_SET_UNION_P2P_SEC;
- else
- type = GNUNET_MESSAGE_TYPE_SET_UNION_P2P_SE;
- ev = GNUNET_MQ_msg_extra (strata_msg,
- len,
- type);
- GNUNET_memcpy (&strata_msg[1],
- buf,
- len);
- GNUNET_free (buf);
- strata_msg->set_size = GNUNET_htonll (GNUNET_CONTAINER_multihashmap_size (op->spec->set->content->elements));
- GNUNET_MQ_send (op->mq,
- ev);
- op->state->phase = PHASE_EXPECT_IBF;
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "sent SE, expecting IBF\n");
-}
-
-
/**
* Compute the necessary order of an ibf
* from the size of the symmetric set difference.
* @return #GNUNET_YES (to continue iterating)
*/
static int
-send_element_iterator (void *cls,
+send_full_element_iterator (void *cls,
const struct GNUNET_HashCode *key,
void *value)
{
}
+/**
+ * Switch to full set transmission for @a op.
+ *
+ * @param op operation to switch to full set transmission.
+ */
static void
send_full_set (struct Operation *op)
{
struct GNUNET_MQ_Envelope *ev;
op->state->phase = PHASE_FULL_SENDING;
+ LOG (GNUNET_ERROR_TYPE_INFO,
+ "Dedicing to transmit the full set\n");
/* FIXME: use a more memory-friendly way of doing this with an
iterator, just as we do in the non-full case! */
- (void) GNUNET_CONTAINER_multihashmap_iterate (op->spec->set->content->elements,
- &send_element_iterator,
+ (void) GNUNET_CONTAINER_multihashmap_iterate (op->set->content->elements,
+ &send_full_element_iterator,
op);
ev = GNUNET_MQ_msg_header (GNUNET_MESSAGE_TYPE_SET_UNION_P2P_FULL_DONE);
GNUNET_MQ_send (op->mq,
}
}
- if ( (GNUNET_YES == op->spec->byzantine) &&
- (other_size < op->spec->byzantine_lower_bound) )
+ if ( (GNUNET_YES == op->byzantine) &&
+ (other_size < op->byzantine_lower_bound) )
{
GNUNET_break (0);
fail_union_operation (op);
return;
}
- if ( (GNUNET_YES == op->spec->force_full) ||
+ if ( (GNUNET_YES == op->force_full) ||
(diff > op->state->initial_size / 4) ||
(0 == other_size) )
{
GNUNET_assert (PHASE_INVENTORY_ACTIVE == op->state->phase);
if (GNUNET_OK !=
- prepare_ibf (op, op->state->remote_ibf->size))
+ prepare_ibf (op,
+ op->state->remote_ibf->size))
{
GNUNET_break (0);
/* allocation failed */
return GNUNET_SYSERR;
}
diff_ibf = ibf_dup (op->state->local_ibf);
- ibf_subtract (diff_ibf, op->state->remote_ibf);
+ ibf_subtract (diff_ibf,
+ op->state->remote_ibf);
ibf_destroy (op->state->remote_ibf);
op->state->remote_ibf = NULL;
if (1 == side)
{
struct IBF_Key unsalted_key;
- unsalt_key (&key, op->state->salt_receive, &unsalted_key);
- send_offers_for_key (op, unsalted_key);
+
+ unsalt_key (&key,
+ op->state->salt_receive,
+ &unsalted_key);
+ send_offers_for_key (op,
+ unsalted_key);
}
else if (-1 == side)
{
struct Operation *op = cls;
unsigned int buckets_in_message;
- if (GNUNET_SET_OPERATION_UNION != op->operation)
+ if (GNUNET_SET_OPERATION_UNION != op->set->operation)
{
GNUNET_break_op (0);
return GNUNET_SYSERR;
else
{
GNUNET_assert (op->state->phase == PHASE_EXPECT_IBF_CONT);
+ LOG (GNUNET_ERROR_TYPE_INFO,
+ "Received more of IBF\n");
}
GNUNET_assert (NULL != op->state->remote_ibf);
LOG (GNUNET_ERROR_TYPE_DEBUG,
"sending element (size %u) to client\n",
element->size);
- GNUNET_assert (0 != op->spec->client_request_id);
+ GNUNET_assert (0 != op->client_request_id);
ev = GNUNET_MQ_msg_extra (rm, element->size, GNUNET_MESSAGE_TYPE_SET_RESULT);
if (NULL == ev)
{
return;
}
rm->result_status = htons (status);
- rm->request_id = htonl (op->spec->client_request_id);
+ rm->request_id = htonl (op->client_request_id);
rm->element_type = htons (element->element_type);
rm->current_size = GNUNET_htonll (GNUNET_CONTAINER_multihashmap32_size (op->state->key_to_element));
- GNUNET_memcpy (&rm[1], element->data, element->size);
- GNUNET_MQ_send (op->spec->set->client_mq, ev);
+ GNUNET_memcpy (&rm[1],
+ element->data,
+ element->size);
+ GNUNET_MQ_send (op->set->cs->mq,
+ ev);
}
struct GNUNET_MQ_Envelope *ev;
struct GNUNET_SET_ResultMessage *rm;
- ev = GNUNET_MQ_msg (rm, GNUNET_MESSAGE_TYPE_SET_RESULT);
- rm->request_id = htonl (op->spec->client_request_id);
+ LOG (GNUNET_ERROR_TYPE_INFO,
+ "Signalling client that union operation is done\n");
+ ev = GNUNET_MQ_msg (rm,
+ GNUNET_MESSAGE_TYPE_SET_RESULT);
+ rm->request_id = htonl (op->client_request_id);
rm->result_status = htons (GNUNET_SET_STATUS_DONE);
rm->element_type = htons (0);
rm->current_size = GNUNET_htonll (GNUNET_CONTAINER_multihashmap32_size (op->state->key_to_element));
- GNUNET_MQ_send (op->spec->set->client_mq, ev);
+ GNUNET_MQ_send (op->set->cs->mq,
+ ev);
/* Will also call the union-specific cancel function. */
- _GSS_operation_destroy (op, GNUNET_YES);
+ _GSS_operation_destroy (op,
+ GNUNET_YES);
}
op->state->phase = PHASE_DONE;
ev = GNUNET_MQ_msg_header (GNUNET_MESSAGE_TYPE_SET_UNION_P2P_DONE);
- GNUNET_MQ_send (op->mq, ev);
-
+ GNUNET_MQ_send (op->mq,
+ ev);
/* We now wait until the other peer closes the channel
* after it got all elements from us. */
}
{
struct Operation *op = cls;
- if (GNUNET_SET_OPERATION_UNION != op->operation)
+ if (GNUNET_SET_OPERATION_UNION != op->set->operation)
{
GNUNET_break_op (0);
return GNUNET_SYSERR;
op->state->received_fresh++;
op_register_element (op, ee, GNUNET_YES);
/* only send results immediately if the client wants it */
- switch (op->spec->result_mode)
+ switch (op->result_mode)
{
case GNUNET_SET_RESULT_ADDED:
send_client_element (op, &ee->element, GNUNET_SET_STATUS_OK);
{
struct Operation *op = cls;
- if (GNUNET_SET_OPERATION_UNION != op->operation)
+ if (GNUNET_SET_OPERATION_UNION != op->set->operation)
{
GNUNET_break_op (0);
return GNUNET_SYSERR;
op->state->received_fresh++;
op_register_element (op, ee, GNUNET_YES);
/* only send results immediately if the client wants it */
- switch (op->spec->result_mode)
+ switch (op->result_mode)
{
case GNUNET_SET_RESULT_ADDED:
send_client_element (op, &ee->element, GNUNET_SET_STATUS_OK);
}
}
- if ( (GNUNET_YES == op->spec->byzantine) &&
+ if ( (GNUNET_YES == op->byzantine) &&
(op->state->received_total > 384 + op->state->received_fresh * 4) &&
(op->state->received_fresh < op->state->received_total / 6) )
{
struct Operation *op = cls;
unsigned int num_keys;
- if (GNUNET_SET_OPERATION_UNION != op->operation)
+ if (GNUNET_SET_OPERATION_UNION != op->set->operation)
{
GNUNET_break_op (0);
return GNUNET_SYSERR;
const struct IBF_Key *ibf_key;
unsigned int num_keys;
+ LOG (GNUNET_ERROR_TYPE_INFO,
+ "Received union inquiry\n");
num_keys = (ntohs (msg->header.size) - sizeof (struct InquiryMessage))
/ sizeof (struct IBF_Key);
ibf_key = (const struct IBF_Key *) &msg[1];
{
struct IBF_Key unsalted_key;
- unsalt_key (ibf_key, ntohl (msg->salt), &unsalted_key);
- send_offers_for_key (op, unsalted_key);
+ unsalt_key (ibf_key,
+ ntohl (msg->salt),
+ &unsalted_key);
+ send_offers_for_key (op,
+ unsalted_key);
ibf_key++;
}
GNUNET_CADET_receive_done (op->channel);
* #GNUNET_NO if not.
*/
static int
-send_missing_elements_iter (void *cls,
- uint32_t key,
- void *value)
+send_missing_full_elements_iter (void *cls,
+ uint32_t key,
+ void *value)
{
struct Operation *op = cls;
struct KeyEntry *ke = value;
if (GNUNET_YES == ke->received)
return GNUNET_YES;
-
- ev = GNUNET_MQ_msg_extra (emsg, ee->element.size, GNUNET_MESSAGE_TYPE_SET_UNION_P2P_FULL_ELEMENT);
- GNUNET_memcpy (&emsg[1], ee->element.data, ee->element.size);
- emsg->reserved = htons (0);
+ ev = GNUNET_MQ_msg_extra (emsg,
+ ee->element.size,
+ GNUNET_MESSAGE_TYPE_SET_UNION_P2P_FULL_ELEMENT);
+ GNUNET_memcpy (&emsg[1],
+ ee->element.data,
+ ee->element.size);
emsg->element_type = htons (ee->element.element_type);
- GNUNET_MQ_send (op->mq, ev);
-
+ GNUNET_MQ_send (op->mq,
+ ev);
return GNUNET_YES;
}
LOG (GNUNET_ERROR_TYPE_INFO,
"Received request for full set transmission\n");
- if (GNUNET_SET_OPERATION_UNION != op->operation)
+ if (GNUNET_SET_OPERATION_UNION != op->set->operation)
{
GNUNET_break_op (0);
fail_union_operation (op);
/* send all the elements that did not come from the remote peer */
GNUNET_CONTAINER_multihashmap32_iterate (op->state->key_to_element,
- &send_missing_elements_iter,
+ &send_missing_full_elements_iter,
op);
ev = GNUNET_MQ_msg_header (GNUNET_MESSAGE_TYPE_SET_UNION_P2P_FULL_DONE);
- GNUNET_MQ_send (op->mq, ev);
+ GNUNET_MQ_notify_sent (ev,
+ &send_done_and_destroy,
+ op);
+ GNUNET_MQ_send (op->mq,
+ ev);
op->state->phase = PHASE_DONE;
/* we now wait until the other peer shuts the tunnel down*/
}
struct Operation *op = cls;
unsigned int num_hashes;
- if (GNUNET_SET_OPERATION_UNION != op->operation)
+ if (GNUNET_SET_OPERATION_UNION != op->set->operation)
{
GNUNET_break_op (0);
return GNUNET_SYSERR;
num_hashes > 0;
hash++, num_hashes--)
{
- ee = GNUNET_CONTAINER_multihashmap_get (op->spec->set->content->elements,
+ ee = GNUNET_CONTAINER_multihashmap_get (op->set->content->elements,
hash);
if (NULL == ee)
{
1,
GNUNET_NO);
- switch (op->spec->result_mode)
+ switch (op->result_mode)
{
case GNUNET_SET_RESULT_ADDED:
/* Nothing to do. */
struct Operation *op = cls;
unsigned int num_hashes;
- if (GNUNET_SET_OPERATION_UNION != op->operation)
+ if (GNUNET_SET_OPERATION_UNION != op->set->operation)
{
GNUNET_break_op (0);
return GNUNET_SYSERR;
}
num_hashes = (ntohs (mh->size) - sizeof (struct GNUNET_MessageHeader))
/ sizeof (struct GNUNET_HashCode);
- if ((ntohs (mh->size) - sizeof (struct GNUNET_MessageHeader))
- != num_hashes * sizeof (struct GNUNET_HashCode))
+ if ((ntohs (mh->size) - sizeof (struct GNUNET_MessageHeader)) !=
+ num_hashes * sizeof (struct GNUNET_HashCode))
{
GNUNET_break_op (0);
return GNUNET_SYSERR;
struct GNUNET_MessageHeader *demands;
struct GNUNET_MQ_Envelope *ev;
- ee = GNUNET_CONTAINER_multihashmap_get (op->spec->set->content->elements,
+ ee = GNUNET_CONTAINER_multihashmap_get (op->set->content->elements,
hash);
if (NULL != ee)
if (GNUNET_YES == _GSS_is_element_of_operation (ee, op))
ev = GNUNET_MQ_msg_header_extra (demands,
sizeof (struct GNUNET_HashCode),
GNUNET_MESSAGE_TYPE_SET_UNION_P2P_DEMAND);
- *(struct GNUNET_HashCode *) &demands[1] = *hash;
+ GNUNET_memcpy (&demands[1],
+ hash,
+ sizeof (struct GNUNET_HashCode));
GNUNET_MQ_send (op->mq, ev);
}
GNUNET_CADET_receive_done (op->channel);
{
struct Operation *op = cls;
- if (GNUNET_SET_OPERATION_UNION != op->operation)
+ if (GNUNET_SET_OPERATION_UNION != op->set->operation)
{
GNUNET_break_op (0);
fail_union_operation (op);
* @param opaque_context message to be transmitted to the listener
* to convince him to accept, may be NULL
*/
-static void
+static struct OperationState *
union_evaluate (struct Operation *op,
const struct GNUNET_MessageHeader *opaque_context)
{
+ struct OperationState *state;
struct GNUNET_MQ_Envelope *ev;
struct OperationRequestMessage *msg;
- GNUNET_assert (NULL == op->state);
- op->state = GNUNET_new (struct OperationState);
- op->state->demanded_hashes = GNUNET_CONTAINER_multihashmap_create (32, GNUNET_NO);
+ ev = GNUNET_MQ_msg_nested_mh (msg,
+ GNUNET_MESSAGE_TYPE_SET_P2P_OPERATION_REQUEST,
+ opaque_context);
+ if (NULL == ev)
+ {
+ /* the context message is too large */
+ GNUNET_break (0);
+ return NULL;
+ }
+ state = GNUNET_new (struct OperationState);
+ state->demanded_hashes = GNUNET_CONTAINER_multihashmap_create (32,
+ GNUNET_NO);
/* copy the current generation's strata estimator for this operation */
- op->state->se = strata_estimator_dup (op->spec->set->state->se);
+ state->se = strata_estimator_dup (op->set->state->se);
/* we started the operation, thus we have to send the operation request */
- op->state->phase = PHASE_EXPECT_SE;
- op->state->salt_receive = op->state->salt_send = 42;
+ state->phase = PHASE_EXPECT_SE;
+ state->salt_receive = state->salt_send = 42; // FIXME?????
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Initiating union operation evaluation\n");
GNUNET_STATISTICS_update (_GSS_statistics,
"# of initiated union operations",
1,
GNUNET_NO);
- ev = GNUNET_MQ_msg_nested_mh (msg,
- GNUNET_MESSAGE_TYPE_SET_P2P_OPERATION_REQUEST,
- opaque_context);
- if (NULL == ev)
- {
- /* the context message is too large */
- GNUNET_break (0);
- GNUNET_SERVICE_client_drop (op->spec->set->client);
- return;
- }
msg->operation = htonl (GNUNET_SET_OPERATION_UNION);
GNUNET_MQ_send (op->mq,
ev);
LOG (GNUNET_ERROR_TYPE_DEBUG,
"sent op request without context message\n");
+ op->state = state;
initialize_key_to_element (op);
- op->state->initial_size = GNUNET_CONTAINER_multihashmap32_size (op->state->key_to_element);
+ state->initial_size = GNUNET_CONTAINER_multihashmap32_size (state->key_to_element);
+ return state;
}
*
* @param op operation that will be accepted as a union operation
*/
-static void
+static struct OperationState *
union_accept (struct Operation *op)
{
+ struct OperationState *state;
+ const struct StrataEstimator *se;
+ struct GNUNET_MQ_Envelope *ev;
+ struct StrataEstimatorMessage *strata_msg;
+ char *buf;
+ size_t len;
+ uint16_t type;
+
LOG (GNUNET_ERROR_TYPE_DEBUG,
"accepting set union operation\n");
- GNUNET_assert (NULL == op->state);
-
GNUNET_STATISTICS_update (_GSS_statistics,
"# of accepted union operations",
1,
1,
GNUNET_NO);
- op->state = GNUNET_new (struct OperationState);
- op->state->se = strata_estimator_dup (op->spec->set->state->se);
- op->state->demanded_hashes = GNUNET_CONTAINER_multihashmap_create (32, GNUNET_NO);
- op->state->salt_receive = op->state->salt_send = 42;
+ state = GNUNET_new (struct OperationState);
+ state->se = strata_estimator_dup (op->set->state->se);
+ state->demanded_hashes = GNUNET_CONTAINER_multihashmap_create (32,
+ GNUNET_NO);
+ state->salt_receive = state->salt_send = 42; // FIXME?????
+ op->state = state;
initialize_key_to_element (op);
- op->state->initial_size = GNUNET_CONTAINER_multihashmap32_size (op->state->key_to_element);
+ state->initial_size = GNUNET_CONTAINER_multihashmap32_size (state->key_to_element);
+
/* kick off the operation */
- send_strata_estimator (op);
+ se = state->se;
+ buf = GNUNET_malloc (se->strata_count * IBF_BUCKET_SIZE * se->ibf_size);
+ len = strata_estimator_write (se,
+ buf);
+ if (len < se->strata_count * IBF_BUCKET_SIZE * se->ibf_size)
+ type = GNUNET_MESSAGE_TYPE_SET_UNION_P2P_SEC;
+ else
+ type = GNUNET_MESSAGE_TYPE_SET_UNION_P2P_SE;
+ ev = GNUNET_MQ_msg_extra (strata_msg,
+ len,
+ type);
+ GNUNET_memcpy (&strata_msg[1],
+ buf,
+ len);
+ GNUNET_free (buf);
+ strata_msg->set_size
+ = GNUNET_htonll (GNUNET_CONTAINER_multihashmap_size (op->set->content->elements));
+ GNUNET_MQ_send (op->mq,
+ ev);
+ state->phase = PHASE_EXPECT_IBF;
+ return state;
}
* @param ee the element to add to the set
*/
static void
-union_add (struct SetState *set_state, struct ElementEntry *ee)
+union_add (struct SetState *set_state,
+ struct ElementEntry *ee)
{
strata_estimator_insert (set_state->se,
get_ibf_key (&ee->element_hash));
* @param ee set element to remove
*/
static void
-union_remove (struct SetState *set_state, struct ElementEntry *ee)
+union_remove (struct SetState *set_state,
+ struct ElementEntry *ee)
{
strata_estimator_remove (set_state->se,
get_ibf_key (&ee->element_hash));
}
-/**
- * Handler for peer-disconnects, notifies the client
- * about the aborted operation in case the op was not concluded.
- *
- * @param op the destroyed operation
- */
-static void
-union_peer_disconnect (struct Operation *op)
-{
- if (PHASE_DONE != op->state->phase)
- {
- struct GNUNET_MQ_Envelope *ev;
- struct GNUNET_SET_ResultMessage *msg;
-
- ev = GNUNET_MQ_msg (msg,
- GNUNET_MESSAGE_TYPE_SET_RESULT);
- msg->request_id = htonl (op->spec->client_request_id);
- msg->result_status = htons (GNUNET_SET_STATUS_FAILURE);
- msg->element_type = htons (0);
- GNUNET_MQ_send (op->spec->set->client_mq,
- ev);
- LOG (GNUNET_ERROR_TYPE_WARNING,
- "other peer disconnected prematurely, phase %u\n",
- op->state->phase);
- _GSS_operation_destroy (op,
- GNUNET_YES);
- return;
- }
- // else: the session has already been concluded
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "other peer disconnected (finished)\n");
- if (GNUNET_NO == op->state->client_done_sent)
- send_done_and_destroy (op);
-}
-
-
/**
* Copy union-specific set state.
*
- * @param set source set for copying the union state
+ * @param state source state for copying the union state
* @return a copy of the union-specific set state
*/
static struct SetState *
-union_copy_state (struct Set *set)
+union_copy_state (struct SetState *state)
{
struct SetState *new_state;
+ GNUNET_assert ( (NULL != state) &&
+ (NULL != state->se) );
new_state = GNUNET_new (struct SetState);
- GNUNET_assert ( (NULL != set->state) && (NULL != set->state->se) );
- new_state->se = strata_estimator_dup (set->state->se);
+ new_state->se = strata_estimator_dup (state->se);
return new_state;
}
+/**
+ * Handle case where channel went down for an operation.
+ *
+ * @param op operation that lost the channel
+ */
+static void
+union_channel_death (struct Operation *op)
+{
+ _GSS_operation_destroy (op,
+ GNUNET_YES);
+}
+
+
/**
* Get the table with implementing functions for
* set union.
.destroy_set = &union_set_destroy,
.evaluate = &union_evaluate,
.accept = &union_accept,
- .peer_disconnect = &union_peer_disconnect,
.cancel = &union_op_cancel,
.copy_state = &union_copy_state,
+ .channel_death = &union_channel_death
};
return &union_vt;
projects / oweals / gnunet.git / commitdiff