/*
This file is part of GNUnet.
- (C) 2009, 2010 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2009-2013, 2016 GNUnet e.V.
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
- Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
+ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
*/
-
/**
- *
* @file gns/gns_api.c
* @brief library to access the GNS service
* @author Martin Schanzenbach
+ * @author Christian Grothoff
*/
-
#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet_constants.h"
#include "gns.h"
#include "gnunet_gns_service.h"
-/* TODO into gnunet_protocols */
-#define GNUNET_MESSAGE_TYPE_GNS_LOOKUP 23
-#define GNUNET_MESSAGE_TYPE_GNS_LOOKUP_RESULT 24
-#define GNUNET_MESSAGE_TYPE_GNS_SHORTEN 25
-#define GNUNET_MESSAGE_TYPE_GNS_SHORTEN_RESULT 26
-#define GNUNET_MESSAGE_TYPE_GNS_GET_AUTH 27
-#define GNUNET_MESSAGE_TYPE_GNS_GET_AUTH_RESULT 28
+
+#define LOG(kind,...) GNUNET_log_from (kind, "gns-api",__VA_ARGS__)
/**
- * A QueueEntry.
+ * Handle to a lookup request
*/
-struct GNUNET_GNS_QueueEntry
+struct GNUNET_GNS_LookupRequest
{
+
/**
* DLL
*/
- struct GNUNET_GNS_QueueEntry *next;
-
+ struct GNUNET_GNS_LookupRequest *next;
+
/**
* DLL
*/
- struct GNUNET_GNS_QueueEntry *prev;
+ struct GNUNET_GNS_LookupRequest *prev;
- /* request id */
- uint32_t r_id;
-
- /* handle to gns */
+ /**
+ * handle to gns
+ */
struct GNUNET_GNS_Handle *gns_handle;
-
- /* processor to call on shorten result */
- GNUNET_GNS_ShortenResultProcessor shorten_proc;
-
- /* processor to call on lookup result */
- GNUNET_GNS_LookupResultProcessor lookup_proc;
-
- /* processor to call on authority lookup result */
- GNUNET_GNS_GetAuthResultProcessor auth_proc;
-
- /* processor closure */
- void *proc_cls;
-
-};
+ /**
+ * processor to call on lookup result
+ */
+ GNUNET_GNS_LookupResultProcessor lookup_proc;
-/**
- * Entry in our list of messages to be (re-)transmitted.
- */
-struct PendingMessage
-{
/**
- * This is a doubly-linked list.
+ * @e lookup_proc closure
*/
- struct PendingMessage *prev;
+ void *proc_cls;
/**
- * This is a doubly-linked list.
+ * Envelope with the message for this queue entry.
*/
- struct PendingMessage *next;
+ struct GNUNET_MQ_Envelope *env;
/**
- * Size of the message.
+ * request id
*/
- size_t size;
+ uint32_t r_id;
};
const struct GNUNET_CONFIGURATION_Handle *cfg;
/**
- * Socket (if available).
+ * Connection to service (if available).
*/
- struct GNUNET_CLIENT_Connection *client;
+ struct GNUNET_MQ_Handle *mq;
/**
- * Currently pending transmission request (or NULL).
+ * Head of linked list of active lookup requests.
*/
- struct GNUNET_CLIENT_TransmitHandle *th;
-
- uint32_t r_id;
-
- /**
- * Head of linked list of shorten messages we would like to transmit.
- */
- struct PendingMessage *pending_head;
-
- /**
- * Tail of linked list of shorten messages we would like to transmit.
- */
- struct PendingMessage *pending_tail;
-
- /**
- * Head of linked list of shorten messages we would like to transmit.
- */
- struct GNUNET_GNS_QueueEntry *shorten_head;
-
- /**
- * Tail of linked list of shorten messages we would like to transmit.
- */
- struct GNUNET_GNS_QueueEntry *shorten_tail;
-
- /**
- * Head of linked list of lookup messages we would like to transmit.
- */
- struct GNUNET_GNS_QueueEntry *lookup_head;
+ struct GNUNET_GNS_LookupRequest *lookup_head;
/**
- * Tail of linked list of lookup messages we would like to transmit.
- */
- struct GNUNET_GNS_QueueEntry *lookup_tail;
-
- /**
- * Head of linked list of authority lookup messages we would like to transmit.
+ * Tail of linked list of active lookup requests.
*/
- struct GNUNET_GNS_QueueEntry *get_auth_head;
-
- /**
- * Tail of linked list of authority lookup messages we would like to transmit.
- */
- struct GNUNET_GNS_QueueEntry *get_auth_tail;
+ struct GNUNET_GNS_LookupRequest *lookup_tail;
/**
* Reconnect task
*/
- GNUNET_SCHEDULER_TaskIdentifier reconnect_task;
+ struct GNUNET_SCHEDULER_Task *reconnect_task;
/**
- * Did we start our receive loop yet?
+ * How long do we wait until we try to reconnect?
*/
- int in_receive;
+ struct GNUNET_TIME_Relative reconnect_backoff;
/**
- * Reconnect necessary
+ * Request Id generator. Incremented by one for each request.
*/
- int reconnect;
-};
+ uint32_t r_id_gen;
-/**
- * Try to send messages from list of messages to send
- * @param handle GNS_Handle
- */
-static void
-process_pending_messages (struct GNUNET_GNS_Handle *handle);
+};
/**
* Reconnect to GNS service.
*
- * @param h the handle to the namestore service
+ * @param handle the handle to the GNS service
*/
static void
-reconnect (struct GNUNET_GNS_Handle *h)
-{
- GNUNET_assert (NULL == h->client);
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Trying to connect to GNS...\n");
- h->client = GNUNET_CLIENT_connect ("gns", h->cfg);
- GNUNET_assert (NULL != h->client);
-}
+reconnect (struct GNUNET_GNS_Handle *handle);
+
/**
* Reconnect to GNS
*
* @param cls the handle
- * @param tc task context
*/
static void
-reconnect_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+reconnect_task (void *cls)
{
- struct GNUNET_GNS_Handle *h = cls;
+ struct GNUNET_GNS_Handle *handle = cls;
- h->reconnect_task = GNUNET_SCHEDULER_NO_TASK;
- reconnect (h);
+ handle->reconnect_task = NULL;
+ reconnect (handle);
}
/**
* Disconnect from service and then reconnect.
*
- * @param h our handle
+ * @param handle our handle
*/
static void
-force_reconnect (struct GNUNET_GNS_Handle *h)
+force_reconnect (struct GNUNET_GNS_Handle *handle)
{
- h->reconnect = GNUNET_NO;
- GNUNET_CLIENT_disconnect (h->client, GNUNET_NO);
- h->client = NULL;
- h->reconnect_task = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_SECONDS,
- &reconnect_task,
- h);
+ GNUNET_MQ_destroy (handle->mq);
+ handle->mq = NULL;
+ handle->reconnect_backoff
+ = GNUNET_TIME_STD_BACKOFF (handle->reconnect_backoff);
+ handle->reconnect_task
+ = GNUNET_SCHEDULER_add_delayed (handle->reconnect_backoff,
+ &reconnect_task,
+ handle);
}
-/**
- * Transmit the next pending message, called by notify_transmit_ready
- */
-static size_t
-transmit_pending (void *cls, size_t size, void *buf);
/**
- * Handler for messages received from the GNS service
+ * Generic error handler, called with the appropriate error code and
+ * the same closure specified at the creation of the message queue.
+ * Not every message queue implementation supports an error handler.
*
- * @param cls the 'struct GNUNET_GNS_Handle'
- * @param msg the incoming message
- */
-static void
-process_message (void *cls, const struct GNUNET_MessageHeader *msg);
-
-/**
- * Try to send messages from list of messages to send
+ * @param cls closure with the `struct GNUNET_GNS_Handle *`
+ * @param error error code
*/
static void
-process_pending_messages (struct GNUNET_GNS_Handle *handle)
-{
- struct PendingMessage *p;
-
- if (handle->client == NULL)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- "process_pending_messages called, but client is null\n");
- return;
- }
-
- if (handle->th != NULL)
- return;
-
- if (NULL == (p = handle->pending_head))
- return;
-
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Trying to transmit %d bytes...\n", p->size);
-
- handle->th =
- GNUNET_CLIENT_notify_transmit_ready (handle->client,
- p->size,
- GNUNET_TIME_UNIT_FOREVER_REL,
- GNUNET_NO, &transmit_pending,
- handle);
- if (NULL != handle->th)
- return;
-
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- "notify_transmit_ready returned NULL!\n");
-}
-
-
-/**
- * Transmit the next pending message, called by notify_transmit_ready
- */
-static size_t
-transmit_pending (void *cls, size_t size, void *buf)
+mq_error_handler (void *cls,
+ enum GNUNET_MQ_Error error)
{
struct GNUNET_GNS_Handle *handle = cls;
- struct PendingMessage *p;
- size_t tsize;
- char *cbuf;
-
- handle->th = NULL;
-
- if ((size == 0) || (buf == NULL))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Transmission to GNS service failed!\n");
- force_reconnect(handle);
- return 0;
- }
-
- tsize = 0;
- cbuf = buf;
-
- if (NULL == (p = handle->pending_head))
- return 0;
-
- while ((NULL != (p = handle->pending_head)) && (p->size <= size))
- {
- memcpy (&cbuf[tsize], &p[1], p->size);
- tsize += p->size;
- size -= p->size;
- GNUNET_CONTAINER_DLL_remove (handle->pending_head, handle->pending_tail, p);
- if (GNUNET_YES != handle->in_receive)
- {
- GNUNET_CLIENT_receive (handle->client, &process_message, handle,
- GNUNET_TIME_UNIT_FOREVER_REL);
- handle->in_receive = GNUNET_YES;
- }
- GNUNET_free(p);
- }
-
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Sending %d bytes\n", tsize);
- process_pending_messages(handle);
- return tsize;
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "Problem with message queue. error: %i\n",
+ error);
+ force_reconnect (handle);
}
+
/**
- * Process a given reply that might match the given
- * request.
+ * Check validity of message received from the GNS service
*
- * @param cls the 'struct GNUNET_GNS_ClientResultMessage'
- * @param key query of the request
- * @param value the 'struct GNUNET_GNS_LookupHandle' of a request matching the same key
+ * @param cls the `struct GNUNET_GNS_Handle *`
+ * @param loookup_msg the incoming message
*/
-static void
-process_shorten_reply (struct GNUNET_GNS_QueueEntry *qe,
- const struct GNUNET_GNS_ClientShortenResultMessage *msg)
+static int
+check_result (void *cls,
+ const struct LookupResultMessage *lookup_msg)
{
- struct GNUNET_GNS_Handle *h = qe->gns_handle;
- const char *short_name;
-
- GNUNET_CONTAINER_DLL_remove(h->shorten_head, h->shorten_tail, qe);
-
- short_name = (char*)(&msg[1]);
-
- if (ntohs (((struct GNUNET_MessageHeader*)msg)->size) <
- sizeof (struct GNUNET_GNS_ClientShortenResultMessage))
+ size_t mlen = ntohs (lookup_msg->header.size) - sizeof (*lookup_msg);
+ uint32_t rd_count = ntohl (lookup_msg->rd_count);
+ struct GNUNET_GNSRECORD_Data rd[rd_count];
+
+ if (GNUNET_SYSERR ==
+ GNUNET_GNSRECORD_records_deserialize (mlen,
+ (const char*) &lookup_msg[1],
+ rd_count,
+ rd))
{
GNUNET_break (0);
- force_reconnect (h);
- return;
+ return GNUNET_SYSERR;
}
-
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Received shortened reply `%s' from GNS service\n",
- short_name);
-
- qe->shorten_proc(qe->proc_cls, short_name);
-
+ return GNUNET_OK;
}
/**
- * Process a given reply that might match the given
- * request.
+ * Handler for messages received from the GNS service
*
- * @param qe the handle to the request
- * @param msg the message to process
+ * @param cls the `struct GNUNET_GNS_Handle *`
+ * @param loookup_msg the incoming message
*/
static void
-process_get_auth_reply (struct GNUNET_GNS_QueueEntry *qe,
- const struct GNUNET_GNS_ClientGetAuthResultMessage *msg)
+handle_result (void *cls,
+ const struct LookupResultMessage *lookup_msg)
{
- struct GNUNET_GNS_Handle *h = qe->gns_handle;
- const char *auth_name;
-
- GNUNET_CONTAINER_DLL_remove(h->get_auth_head, h->get_auth_tail, qe);
-
- auth_name = (char*)(&msg[1]);
+ struct GNUNET_GNS_Handle *handle = cls;
+ size_t mlen = ntohs (lookup_msg->header.size) - sizeof (*lookup_msg);
+ uint32_t rd_count = ntohl (lookup_msg->rd_count);
+ struct GNUNET_GNSRECORD_Data rd[rd_count];
+ uint32_t r_id = ntohl (lookup_msg->id);
+ struct GNUNET_GNS_LookupRequest *lr;
+ GNUNET_GNS_LookupResultProcessor proc;
+ void *proc_cls;
- if (ntohs (((struct GNUNET_MessageHeader*)msg)->size) <
- sizeof (struct GNUNET_GNS_ClientGetAuthResultMessage))
- {
- GNUNET_break (0);
- force_reconnect (h);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Received lookup reply from GNS service (%u records)\n",
+ (unsigned int) rd_count);
+ for (lr = handle->lookup_head; NULL != lr; lr = lr->next)
+ if (lr->r_id == r_id)
+ break;
+ if (NULL == lr)
return;
- }
-
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Received GET_AUTH reply `%s' from GNS service\n",
- auth_name);
+ proc = lr->lookup_proc;
+ proc_cls = lr->proc_cls;
- qe->auth_proc(qe->proc_cls, auth_name);
-
+ GNUNET_assert (GNUNET_OK ==
+ GNUNET_GNSRECORD_records_deserialize (mlen,
+ (const char*) &lookup_msg[1],
+ rd_count,
+ rd));
+ proc (proc_cls,
+ rd_count,
+ rd);
+ GNUNET_CONTAINER_DLL_remove (handle->lookup_head,
+ handle->lookup_tail,
+ lr);
+ if (NULL != lr->env)
+ GNUNET_MQ_discard (lr->env);
+ GNUNET_free (lr);
}
-/**
- * Process a given reply to the lookup request
- *
- * @param cls the 'struct GNUNET_GNS_ClientResultMessage'
- * @param key query of the request
- * @param value the 'struct GNUNET_GNS_LookupHandle' of a request matching the same key
- * @return GNUNET_YES to continue to iterate over all results,
- * GNUNET_NO if the reply is malformed
- */
-static void
-process_lookup_reply (struct GNUNET_GNS_QueueEntry *qe,
- const struct GNUNET_GNS_ClientLookupResultMessage *msg)
-{
- struct GNUNET_GNS_Handle *h = qe->gns_handle;
- int rd_count = ntohl(msg->rd_count);
- size_t len = ntohs (((struct GNUNET_MessageHeader*)msg)->size);
- struct GNUNET_NAMESTORE_RecordData rd[rd_count];
- GNUNET_CONTAINER_DLL_remove(h->lookup_head, h->lookup_tail, qe);
-
- if (len < sizeof (struct GNUNET_GNS_ClientLookupResultMessage))
- {
- GNUNET_break (0);
- force_reconnect (h);
- return;
- }
-
- len -= sizeof(struct GNUNET_GNS_ClientLookupResultMessage);
-
- GNUNET_NAMESTORE_records_deserialize (len, (char*)&msg[1],
- rd_count,
- rd);
-
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Received lookup reply from GNS service (count=%d)\n",
- ntohl(msg->rd_count));
-
- qe->lookup_proc(qe->proc_cls, rd_count, rd);
-}
/**
- * Handler for messages received from the GNS service
+ * Reconnect to GNS service.
*
- * @param cls the 'struct GNUNET_GNS_Handle'
- * @param msg the incoming message
+ * @param handle the handle to the GNS service
*/
static void
-process_message (void *cls, const struct GNUNET_MessageHeader *msg)
+reconnect (struct GNUNET_GNS_Handle *handle)
{
- struct GNUNET_GNS_Handle *handle = cls;
- struct GNUNET_GNS_QueueEntry *qe;
- const struct GNUNET_GNS_ClientLookupResultMessage *lookup_msg;
- const struct GNUNET_GNS_ClientShortenResultMessage *shorten_msg;
- const struct GNUNET_GNS_ClientGetAuthResultMessage *get_auth_msg;
- uint16_t size;
- uint16_t type;
- uint32_t r_id;
-
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Got message\n");
- if (msg == NULL)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Error receiving data from GNS service, reconnecting\n");
- force_reconnect (handle);
+ struct GNUNET_MQ_MessageHandler handlers[] = {
+ GNUNET_MQ_hd_var_size (result,
+ GNUNET_MESSAGE_TYPE_GNS_LOOKUP_RESULT,
+ struct LookupResultMessage,
+ handle),
+ GNUNET_MQ_handler_end ()
+ };
+ struct GNUNET_GNS_LookupRequest *lh;
+
+ GNUNET_assert (NULL == handle->mq);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Trying to connect to GNS\n");
+ handle->mq = GNUNET_CLIENT_connect (handle->cfg,
+ "gns",
+ handlers,
+ &mq_error_handler,
+ handle);
+ if (NULL == handle->mq)
return;
- }
-
- size = ntohs (msg->size);
- type = ntohs (msg->type);
-
- if (type == GNUNET_MESSAGE_TYPE_GNS_LOOKUP_RESULT)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Got lookup msg\n");
- lookup_msg = (const struct GNUNET_GNS_ClientLookupResultMessage *) msg;
- r_id = ntohl (lookup_msg->id);
-
- if (r_id > handle->r_id)
- {
- /** no request found */
- GNUNET_break_op (0);
- GNUNET_CLIENT_receive (handle->client, &process_message, handle,
- GNUNET_TIME_UNIT_FOREVER_REL);
- }
-
- for (qe = handle->lookup_head; qe != NULL; qe = qe->next)
- {
- if (qe->r_id == r_id)
- break;
- }
- if (qe)
- process_lookup_reply(qe, lookup_msg);
-
-
- }
- else if (type == GNUNET_MESSAGE_TYPE_GNS_SHORTEN_RESULT)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Got SHORTEN_RESULT msg\n");
- shorten_msg = (struct GNUNET_GNS_ClientShortenResultMessage *) msg;
-
- r_id = ntohl (shorten_msg->id);
-
- if (r_id > handle->r_id)
- {
- /** no request found */
- GNUNET_break_op (0);
- GNUNET_CLIENT_receive (handle->client, &process_message, handle,
- GNUNET_TIME_UNIT_FOREVER_REL);
- }
-
- for (qe = handle->shorten_head; qe != NULL; qe = qe->next)
- {
- if (qe->r_id == r_id)
- break;
- }
- if (qe)
- process_shorten_reply(qe, shorten_msg);
- }
- else if (type == GNUNET_MESSAGE_TYPE_GNS_GET_AUTH_RESULT)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Got GET_AUTH_RESULT msg\n");
- get_auth_msg = (struct GNUNET_GNS_ClientGetAuthResultMessage *) msg;
-
- r_id = ntohl (get_auth_msg->id);
-
- if (r_id > handle->r_id)
- {
- /** no request found */
- GNUNET_break_op (0);
- GNUNET_CLIENT_receive (handle->client, &process_message, handle,
- GNUNET_TIME_UNIT_FOREVER_REL);
- }
-
- for (qe = handle->get_auth_head; qe != NULL; qe = qe->next)
- {
- if (qe->r_id == r_id)
- break;
- }
- if (qe)
- process_get_auth_reply(qe, get_auth_msg);
- }
-
- GNUNET_CLIENT_receive (handle->client, &process_message, handle,
- GNUNET_TIME_UNIT_FOREVER_REL);
-
- if (GNUNET_YES == handle->reconnect)
- force_reconnect (handle);
-
+ for (lh = handle->lookup_head; NULL != lh; lh = lh->next)
+ GNUNET_MQ_send_copy (handle->mq,
+ lh->env);
}
* Initialize the connection with the GNS service.
*
* @param cfg configuration to use
- * @param ht_len size of the internal hash table to use for parallel requests
* @return handle to the GNS service, or NULL on error
*/
struct GNUNET_GNS_Handle *
{
struct GNUNET_GNS_Handle *handle;
- handle = GNUNET_malloc (sizeof (struct GNUNET_GNS_Handle));
+ handle = GNUNET_new (struct GNUNET_GNS_Handle);
handle->cfg = cfg;
reconnect (handle);
- //handle->reconnect_task = GNUNET_SCHEDULER_add_now (&reconnect_task, handle);
- handle->r_id = 0;
- handle->in_receive = GNUNET_NO;
+ if (NULL == handle->mq)
+ {
+ GNUNET_free (handle);
+ return NULL;
+ }
return handle;
}
void
GNUNET_GNS_disconnect (struct GNUNET_GNS_Handle *handle)
{
- /* disco from GNS */
+ if (NULL != handle->mq)
+ {
+ GNUNET_MQ_destroy (handle->mq);
+ handle->mq = NULL;
+ }
+ if (NULL != handle->reconnect_task)
+ {
+ GNUNET_SCHEDULER_cancel (handle->reconnect_task);
+ handle->reconnect_task = NULL;
+ }
+ GNUNET_assert (NULL == handle->lookup_head);
+ GNUNET_free (handle);
}
-/*
- * Helper function to generate request ids
- *
- * @param h handle
- * @return a new id
- */
-static uint32_t
-get_request_id (struct GNUNET_GNS_Handle *h)
-{
- uint32_t r_id = h->r_id;
- h->r_id++;
- return r_id;
-}
/**
- * Perform an asynchronous Lookup operation on the GNS.
+ * Cancel pending lookup request
*
- * @param handle handle to the GNS service
- * @param name the name to look up
- * @param iter function to call on each result
- * @param iter_cls closure for iter
- * @return handle to stop the async get
+ * @param lr the lookup request to cancel
*/
-struct GNUNET_GNS_QueueEntry *
-GNUNET_GNS_lookup (struct GNUNET_GNS_Handle *handle,
- const char * name,
- enum GNUNET_GNS_RecordType type,
- GNUNET_GNS_LookupResultProcessor proc,
- void *proc_cls)
+void
+GNUNET_GNS_lookup_cancel (struct GNUNET_GNS_LookupRequest *lr)
{
- /* IPC to shorten gns names, return shorten_handle */
- struct GNUNET_GNS_ClientLookupMessage *lookup_msg;
- struct GNUNET_GNS_QueueEntry *qe;
- size_t msize;
- struct PendingMessage *pending;
-
- if (NULL == name)
- {
- return NULL;
- }
+ struct GNUNET_GNS_Handle *handle = lr->gns_handle;
- msize = sizeof (struct GNUNET_GNS_ClientLookupMessage) + strlen(name) + 1;
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Trying to lookup %s in GNS\n", name);
-
- qe = GNUNET_malloc(sizeof (struct GNUNET_GNS_QueueEntry));
- qe->gns_handle = handle;
- qe->lookup_proc = proc;
- qe->proc_cls = proc_cls;
- qe->r_id = get_request_id(handle);
- GNUNET_CONTAINER_DLL_insert_tail(handle->lookup_head,
- handle->lookup_tail, qe);
-
- pending = GNUNET_malloc (sizeof (struct PendingMessage) + msize);
- memset(pending, 0, (sizeof (struct PendingMessage) + msize));
-
- pending->size = msize;
-
- lookup_msg = (struct GNUNET_GNS_ClientLookupMessage *) &pending[1];
- lookup_msg->header.type = htons (GNUNET_MESSAGE_TYPE_GNS_LOOKUP);
- lookup_msg->header.size = htons (msize);
- lookup_msg->id = htonl(qe->r_id);
- lookup_msg->type = htonl(type);
-
- memcpy(&lookup_msg[1], name, strlen(name));
-
- GNUNET_CONTAINER_DLL_insert (handle->pending_head, handle->pending_tail,
- pending);
-
- process_pending_messages (handle);
- return qe;
+ GNUNET_CONTAINER_DLL_remove (handle->lookup_head,
+ handle->lookup_tail,
+ lr);
+ GNUNET_MQ_discard (lr->env);
+ GNUNET_free (lr);
}
/**
- * Perform a name shortening operation on the GNS.
+ * Perform an asynchronous lookup operation on the GNS.
*
* @param handle handle to the GNS service
* @param name the name to look up
- * @param proc function to call on result
- * @param proc_cls closure for processor
- * @return handle to the operation
+ * @param zone the zone to start the resolution in
+ * @param type the record type to look up
+ * @param options local options for the lookup
+ * @param proc processor to call on result
+ * @param proc_cls closure for @a proc
+ * @return handle to the get request
*/
-struct GNUNET_GNS_QueueEntry *
-GNUNET_GNS_shorten (struct GNUNET_GNS_Handle *handle,
- const char * name,
- GNUNET_GNS_ShortenResultProcessor proc,
- void *proc_cls)
+struct GNUNET_GNS_LookupRequest*
+GNUNET_GNS_lookup (struct GNUNET_GNS_Handle *handle,
+ const char *name,
+ const struct GNUNET_CRYPTO_EcdsaPublicKey *zone,
+ uint32_t type,
+ enum GNUNET_GNS_LocalOptions options,
+ GNUNET_GNS_LookupResultProcessor proc,
+ void *proc_cls)
{
/* IPC to shorten gns names, return shorten_handle */
- struct GNUNET_GNS_ClientShortenMessage *shorten_msg;
- struct GNUNET_GNS_QueueEntry *qe;
- size_t msize;
- struct PendingMessage *pending;
+ struct LookupMessage *lookup_msg;
+ struct GNUNET_GNS_LookupRequest *lr;
+ size_t nlen;
if (NULL == name)
{
+ GNUNET_break (0);
return NULL;
}
-
- msize = sizeof (struct GNUNET_GNS_ClientShortenMessage) + strlen(name) + 1;
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Trying to shorten %s in GNS\n", name);
-
- qe = GNUNET_malloc(sizeof (struct GNUNET_GNS_QueueEntry));
- qe->gns_handle = handle;
- qe->shorten_proc = proc;
- qe->proc_cls = proc_cls;
- qe->r_id = get_request_id(handle);
- GNUNET_CONTAINER_DLL_insert_tail(handle->shorten_head,
- handle->shorten_tail, qe);
-
- pending = GNUNET_malloc (sizeof (struct PendingMessage) + msize);
- memset(pending, 0, (sizeof (struct PendingMessage) + msize));
-
- pending->size = msize;
-
- shorten_msg = (struct GNUNET_GNS_ClientShortenMessage *) &pending[1];
- shorten_msg->header.type = htons (GNUNET_MESSAGE_TYPE_GNS_SHORTEN);
- shorten_msg->header.size = htons (msize);
- shorten_msg->id = htonl(qe->r_id);
-
- memcpy(&shorten_msg[1], name, strlen(name));
-
- GNUNET_CONTAINER_DLL_insert (handle->pending_head, handle->pending_tail,
- pending);
-
- process_pending_messages (handle);
- return qe;
-}
-
-
-/**
- * Perform an authority lookup for a given name.
- *
- * @param handle handle to the GNS service
- * @param name the name to look up authority for
- * @param proc function to call on result
- * @param proc_cls closure for processor
- * @return handle to the operation
- */
-struct GNUNET_GNS_QueueEntry *
-GNUNET_GNS_get_authority (struct GNUNET_GNS_Handle *handle,
- const char * name,
- GNUNET_GNS_GetAuthResultProcessor proc,
- void *proc_cls)
-{
- struct GNUNET_GNS_ClientGetAuthMessage *get_auth_msg;
- struct GNUNET_GNS_QueueEntry *qe;
- size_t msize;
- struct PendingMessage *pending;
-
- if (NULL == name)
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Trying to lookup `%s' in GNS\n",
+ name);
+ nlen = strlen (name) + 1;
+ if (nlen >= GNUNET_MAX_MESSAGE_SIZE - sizeof (*lr))
{
+ GNUNET_break (0);
return NULL;
}
-
- msize = sizeof (struct GNUNET_GNS_ClientGetAuthMessage) + strlen(name) + 1;
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Trying to look up authority for %s in GNS\n", name);
-
- qe = GNUNET_malloc(sizeof (struct GNUNET_GNS_QueueEntry));
- qe->gns_handle = handle;
- qe->auth_proc = proc;
- qe->proc_cls = proc_cls;
- qe->r_id = get_request_id(handle);
- GNUNET_CONTAINER_DLL_insert_tail(handle->get_auth_head,
- handle->get_auth_tail, qe);
-
- pending = GNUNET_malloc (sizeof (struct PendingMessage) + msize);
- memset(pending, 0, (sizeof (struct PendingMessage) + msize));
-
- pending->size = msize;
-
- get_auth_msg = (struct GNUNET_GNS_ClientGetAuthMessage *) &pending[1];
- get_auth_msg->header.type = htons (GNUNET_MESSAGE_TYPE_GNS_GET_AUTH);
- get_auth_msg->header.size = htons (msize);
- get_auth_msg->id = htonl(qe->r_id);
-
- memcpy(&get_auth_msg[1], name, strlen(name));
-
- GNUNET_CONTAINER_DLL_insert (handle->pending_head, handle->pending_tail,
- pending);
-
- process_pending_messages (handle);
- return qe;
+ lr = GNUNET_new (struct GNUNET_GNS_LookupRequest);
+ lr->gns_handle = handle;
+ lr->lookup_proc = proc;
+ lr->proc_cls = proc_cls;
+ lr->r_id = handle->r_id_gen++;
+ lr->env = GNUNET_MQ_msg_extra (lookup_msg,
+ nlen,
+ GNUNET_MESSAGE_TYPE_GNS_LOOKUP);
+ lookup_msg->id = htonl (lr->r_id);
+ lookup_msg->options = htons ((uint16_t) options);
+ lookup_msg->zone = *zone;
+ lookup_msg->type = htonl (type);
+ GNUNET_memcpy (&lookup_msg[1],
+ name,
+ nlen);
+ GNUNET_CONTAINER_DLL_insert (handle->lookup_head,
+ handle->lookup_tail,
+ lr);
+ if (NULL != handle->mq)
+ GNUNET_MQ_send_copy (handle->mq,
+ lr->env);
+ return lr;
}
-
/* end of gns_api.c */
projects / oweals / gnunet.git / blobdiff