--- /dev/null
+/*
+ This file is part of GNUnet.
+ (C) 2009, 2010 Christian Grothoff (and other contributing authors)
+
+ GNUnet is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published
+ by the Free Software Foundation; either version 3, or (at your
+ option) any later version.
+
+ GNUnet is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ 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.
+*/
+
+/**
+ * @file gns/namestore_stub_api.c
+ * @brief stub library to access the NAMESTORE service
+ * @author Martin Schanzenbach
+ */
+
+#include "platform.h"
+#include "gnunet_util_lib.h"
+#include "gnunet_constants.h"
+#include "gnunet_arm_service.h"
+#include "gnunet_namestore_service.h"
+
+#define DEBUG_GNS_API GNUNET_EXTRA_LOGGING
+
+#define LOG(kind,...) GNUNET_log_from (kind, "gns-api",__VA_ARGS__)
+
+/**
+ * A QueueEntry.
+ */
+struct GNUNET_NAMESTORE_QueueEntry
+{
+ char *data; /*stub data pointer*/
+};
+
+/**
+ * Connection to the NAMESTORE service.
+ */
+struct GNUNET_NAMESTORE_Handle
+{
+
+ /**
+ * Configuration to use.
+ */
+ const struct GNUNET_CONFIGURATION_Handle *cfg;
+
+ /**
+ * Socket (if available).
+ */
+ struct GNUNET_CLIENT_Connection *client;
+
+ /**
+ * Currently pending transmission request (or NULL).
+ */
+ struct GNUNET_CLIENT_TransmitHandle *th;
+
+ /* dll to use for records */
+ struct GNUNET_NAMESTORE_SimpleRecord * records_head;
+ struct GNUNET_NAMESTORE_SimpleRecord * records_tail;
+
+};
+
+struct GNUNET_NAMESTORE_SimpleRecord
+{
+ /**
+ * DLL
+ */
+ struct GNUNET_NAMESTORE_SimpleRecord *next;
+
+ /**
+ * DLL
+ */
+ struct GNUNET_NAMESTORE_SimpleRecord *prev;
+
+ const char *name;
+ const GNUNET_HashCode *zone;
+ uint32_t record_type;
+ struct GNUNET_TIME_Absolute expiration;
+ enum GNUNET_NAMESTORE_RecordFlags flags;
+ size_t data_size;
+ const void *data;
+};
+
+/**
+ * Initialize the connection with the NAMESTORE service.
+ *
+ * @param cfg configuration to use
+ * @return handle to the GNS service, or NULL on error
+ */
+struct GNUNET_NAMESTORE_Handle *
+GNUNET_NAMESTORE_connect (const struct GNUNET_CONFIGURATION_Handle *cfg)
+{
+ struct GNUNET_NAMESTORE_Handle *handle;
+
+ handle = GNUNET_malloc (sizeof (struct GNUNET_NAMESTORE_Handle));
+ handle->cfg = cfg;
+ return handle;
+}
+
+
+/**
+ * Shutdown connection with the NAMESTORE service.
+ *
+ * @param handle handle of the NAMESTORE connection to stop
+ */
+void
+GNUNET_NAMESTORE_disconnect (struct GNUNET_NAMESTORE_Handle *handle, int drop)
+{
+ GNUNET_free(handle);
+}
+
+/**
+ * Sign a record. This function is used by the authority of the zone
+ * to add a record.
+ *
+ * @param h handle to the namestore
+ * @param zone_privkey private key of the zone
+ * @param record_hash hash of the record to be signed
+ * @param cont continuation to call when done
+ * @param cont_cls closure for cont
+ * @return handle to abort the request
+ */
+struct GNUNET_NAMESTORE_QueueEntry *
+GNUNET_NAMESTORE_stree_extend (struct GNUNET_NAMESTORE_Handle *h,
+ const struct GNUNET_CRYPTO_RsaPrivateKey *zone_privkey,
+ const GNUNET_HashCode *record_hash,
+ GNUNET_NAMESTORE_ContinuationWithSignature cont,
+ void *cont_cls)
+{
+ struct GNUNET_NAMESTORE_QueueEntry *qe;
+ qe = GNUNET_malloc(sizeof (struct GNUNET_NAMESTORE_QueueEntry));
+ return qe;
+}
+
+/**
+ * Rebalance the signature tree of our zone. This function should
+ * be called "rarely" to rebalance the tree.
+ *
+ * @param h handle to the namestore
+ * @param zone_privkey private key for the zone to rebalance
+ * @param cont continuation to call when done
+ * @param cont_cls closure for cont
+ * @return handle to abort the request
+ */
+struct GNUNET_NAMESTORE_QueueEntry *
+GNUNET_NAMESTORE_stree_rebalance (struct GNUNET_NAMESTORE_Handle *h,
+ const struct GNUNET_CRYPTO_RsaPrivateKey *zone_privkey,
+ GNUNET_NAMESTORE_ContinuationWithStatus cont,
+ void *cont_cls)
+{
+ struct GNUNET_NAMESTORE_QueueEntry *qe;
+ qe = GNUNET_malloc(sizeof (struct GNUNET_NAMESTORE_QueueEntry));
+ return qe;
+}
+
+/**
+ * Provide the root of a signature tree. This function is
+ * used by non-authorities as the first operation when
+ * adding a foreign zone.
+ *
+ * @param h handle to the namestore
+ * @param zone_key public key of the zone
+ * @param signature signature of the top-level entry of the zone
+ * @param revision revision number of the zone
+ * @param top_hash top-level hash of the zone
+ * @param cont continuation to call when done
+ * @param cont_cls closure for cont
+ * @return handle to abort the request
+ */
+struct GNUNET_NAMESTORE_QueueEntry *
+GNUNET_NAMESTORE_stree_start (struct GNUNET_NAMESTORE_Handle *h,
+ const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
+ const struct GNUNET_CRYPTO_RsaSignature *signature,
+ uint32_t revision,
+ const GNUNET_HashCode *top_hash,
+ GNUNET_NAMESTORE_ContinuationWithSignature cont,
+ void *cont_cls)
+{
+ struct GNUNET_NAMESTORE_QueueEntry *qe;
+ qe = GNUNET_malloc(sizeof (struct GNUNET_NAMESTORE_QueueEntry));
+ return qe;
+}
+
+/**
+ * Store part of a signature B-tree in the namestore. This function
+ * is used by non-authorities to cache parts of a zone's signature tree.
+ * Note that the tree must be build top-down. This function must check
+ * that the nodes being added are valid, and if not refuse the operation.
+ *
+ * @param h handle to the namestore
+ * @param zone_key public key of the zone
+ * @param loc location in the B-tree
+ * @param ploc parent's location in the B-tree (must have depth = loc.depth - 1), NULL for root
+ * @param top_sig signature at the top, NULL if 'loc.depth > 0'
+ * @param num_entries number of entries at this node in the B-tree
+ * @param entries the 'num_entries' entries to store (hashes over the
+ * records)
+ * @param cont continuation to call when done
+ * @param cont_cls closure for cont
+ * @return handle to abort the request
+ */
+struct GNUNET_NAMESTORE_QueueEntry *
+GNUNET_NAMESTORE_stree_put (struct GNUNET_NAMESTORE_Handle *h,
+ const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
+ const struct GNUNET_NAMESTORE_SignatureLocation *loc,
+ const struct GNUNET_NAMESTORE_SignatureLocation *ploc,
+ const struct GNUNET_CRYPTO_RsaSignature *sig,
+ unsigned int num_entries,
+ const GNUNET_HashCode *entries,
+ GNUNET_NAMESTORE_ContinuationWithStatus cont,
+ void *cont_cls)
+{
+ struct GNUNET_NAMESTORE_QueueEntry *qe;
+ qe = GNUNET_malloc(sizeof (struct GNUNET_NAMESTORE_QueueEntry));
+ return qe;
+}
+
+/**
+ * Store an item in the namestore. If the item is already present,
+ * the expiration time is updated to the max of the existing time and
+ * the new time. The operation must fail if there is no matching
+ * entry in the signature tree.
+ *
+ * @param h handle to the namestore
+ * @param zone hash of the public key of the zone
+ * @param name name that is being mapped (at most 255 characters long)
+ * @param record_type type of the record (A, AAAA, PKEY, etc.)
+ * @param expiration expiration time for the content
+ * @param flags flags for the content
+ * @param sig_loc where is the information about the signature for this record stored?
+ * @param data_size number of bytes in data
+ * @param data value, semantics depend on 'record_type' (see RFCs for DNS and
+ * GNS specification for GNS extensions)
+ * @param cont continuation to call when done
+ * @param cont_cls closure for cont
+ * @return handle to abort the request
+ */
+struct GNUNET_NAMESTORE_QueueEntry *
+GNUNET_NAMESTORE_record_put (struct GNUNET_NAMESTORE_Handle *h,
+ const GNUNET_HashCode *zone,
+ const char *name,
+ uint32_t record_type,
+ struct GNUNET_TIME_Absolute expiration,
+ enum GNUNET_NAMESTORE_RecordFlags flags,
+ const struct GNUNET_NAMESTORE_SignatureLocation *sig_loc,
+ size_t data_size,
+ const void *data,
+ GNUNET_NAMESTORE_ContinuationWithStatus cont,
+ void *cont_cls)
+{
+ struct GNUNET_NAMESTORE_QueueEntry *qe;
+ qe = GNUNET_malloc(sizeof (struct GNUNET_NAMESTORE_QueueEntry));
+
+ struct GNUNET_NAMESTORE_SimpleRecord *sr;
+ sr = GNUNET_malloc(sizeof(struct GNUNET_NAMESTORE_SimpleRecord));
+ sr->name = name;
+ sr->record_type = record_type;
+ sr->expiration = expiration;
+ sr->flags = flags;
+ sr->data_size = data_size;
+ sr->data = data;
+ GNUNET_CONTAINER_DLL_insert(h->records_head, h->records_tail, sr);
+ return qe;
+}
+
+/**
+ * Explicitly remove some content from the database. The
+ * "cont"inuation will be called with status "GNUNET_OK" if content
+ * was removed, "GNUNET_NO" if no matching entry was found and
+ * "GNUNET_SYSERR" on all other types of errors.
+ *
+ * @param h handle to the namestore
+ * @param zone hash of the public key of the zone
+ * @param name name that is being mapped (at most 255 characters long)
+ * @param record_type type of the record (A, AAAA, PKEY, etc.)
+ * @param size number of bytes in data
+ * @param data content stored
+ * @param cont continuation to call when done
+ * @param cont_cls closure for cont
+ * @return handle to abort the request
+ */
+struct GNUNET_NAMESTORE_QueueEntry *
+GNUNET_NAMESTORE_record_remove (struct GNUNET_NAMESTORE_Handle *h,
+ const GNUNET_HashCode *zone,
+ const char *name,
+ uint32_t record_type,
+ size_t size,
+ const void *data,
+ GNUNET_NAMESTORE_ContinuationWithStatus cont,
+ void *cont_cls)
+{
+ struct GNUNET_NAMESTORE_QueueEntry *qe;
+ qe = GNUNET_malloc(sizeof (struct GNUNET_NAMESTORE_QueueEntry));
+
+ struct GNUNET_NAMESTORE_SimpleRecord *iter;
+ for (iter=h->records_head; iter != NULL; iter=iter->next)
+ {
+ if (strcmp ( iter->name, name ) &&
+ iter->record_type == record_type &&
+ GNUNET_CRYPTO_hash_cmp (iter->zone, zone))
+ break;
+ }
+ if (iter)
+ GNUNET_CONTAINER_DLL_remove(h->records_head,
+ h->records_tail,
+ iter);
+
+ return qe;
+}
+
+/**
+ * Get a result for a particular key from the namestore. The processor
+ * will only be called once.
+ *
+ * @param h handle to the namestore
+ * @param zone zone to look up a record from
+ * @param name name to look up
+ * @param record_type desired record type
+ * @param proc function to call on each matching value;
+ * will be called once with a NULL value at the end
+ * @param proc_cls closure for proc
+ * @return a handle that can be used to
+ * cancel
+ */
+struct GNUNET_NAMESTORE_QueueEntry *
+GNUNET_NAMESTORE_lookup_name (struct GNUNET_NAMESTORE_Handle *h,
+ const GNUNET_HashCode *zone,
+ const char *name,
+ uint32_t record_type,
+ GNUNET_NAMESTORE_RecordProcessor proc, void *proc_cls)
+{
+ struct GNUNET_NAMESTORE_QueueEntry *qe;
+ qe = GNUNET_malloc(sizeof (struct GNUNET_NAMESTORE_QueueEntry));
+
+ struct GNUNET_NAMESTORE_SimpleRecord *iter;
+ for (iter=h->records_head; iter != NULL; iter=iter->next)
+ {
+ proc(proc_cls, iter->zone, iter->name, iter->record_type,
+ iter->expiration,
+ iter->flags,
+ NULL /*sig loc*/,
+ iter->data_size /*size*/,
+ iter->data /* data */);
+ }
+ proc(proc_cls, zone, name, record_type,
+ GNUNET_TIME_absolute_get_forever(), 0, NULL, 0, NULL); /*TERMINATE*/
+
+ return qe;
+}
+
+
+/**
+ * Get the hash of a record (what will be signed in the Stree for
+ * the record).
+ *
+ * @param zone hash of the public key of the zone
+ * @param name name that is being mapped (at most 255 characters long)
+ * @param record_type type of the record (A, AAAA, PKEY, etc.)
+ * @param expiration expiration time for the content
+ * @param flags flags for the content
+ * @param data_size number of bytes in data
+ * @param data value, semantics depend on 'record_type' (see RFCs for DNS and.
+ * GNS specification for GNS extensions)
+ * @param record_hash hash of the record (set)
+ */
+void
+GNUNET_NAMESTORE_record_hash (struct GNUNET_NAMESTORE_Handle *h,
+ const GNUNET_HashCode *zone,
+ const char *name,
+ uint32_t record_type,
+ struct GNUNET_TIME_Absolute expiration,
+ enum GNUNET_NAMESTORE_RecordFlags flags,
+ size_t data_size,
+ const void *data,
+ GNUNET_HashCode *record_hash)
+{
+ char* teststring = "namestore-stub";
+ GNUNET_CRYPTO_hash(teststring, strlen(teststring), record_hash);
+}
+
+/**
+ * Obtain part of a signature B-tree. The processor
+ * will only be called once.
+ *
+ * @param h handle to the namestore
+ * @param zone zone to look up a record from
+ * @param sig_loc location to look up
+ * @param proc function to call on each matching value;
+ * will be called once with a NULL value at the end
+ * @param proc_cls closure for proc
+ * @return a handle that can be used to
+ * cancel
+ */
+struct GNUNET_NAMESTORE_QueueEntry *
+GNUNET_NAMESTORE_lookup_stree (struct GNUNET_NAMESTORE_Handle *h,
+ const GNUNET_HashCode *zone,
+ const struct GNUNET_NAMESTORE_SignatureLocation *sig_loc,
+ GNUNET_NAMESTORE_StreeProcessor proc, void *proc_cls)
+{
+ struct GNUNET_NAMESTORE_QueueEntry *qe;
+ qe = GNUNET_malloc(sizeof (struct GNUNET_NAMESTORE_QueueEntry));
+ return qe;
+}
+
+
+/**
+ * Get all records of a zone.
+ *
+ * @param h handle to the namestore
+ * @param zone zone to access
+ * @param proc function to call on a random value; it
+ * will be called repeatedly with a value (if available)
+ * and always once at the end with a zone and name of NULL.
+ * @param proc_cls closure for proc
+ * @return a handle that can be used to
+ * cancel
+ */
+struct GNUNET_NAMESTORE_QueueEntry *
+GNUNET_NAMESTORE_zone_transfer (struct GNUNET_NAMESTORE_Handle *h,
+ const GNUNET_HashCode *zone,
+ GNUNET_NAMESTORE_RecordProcessor proc,
+ void *proc_cls)
+{
+ struct GNUNET_NAMESTORE_QueueEntry *qe;
+ qe = GNUNET_malloc(sizeof (struct GNUNET_NAMESTORE_QueueEntry));
+ return qe;
+}
+
+
+
+
+/**
+ * Cancel a namestore operation. The final callback from the
+ * operation must not have been done yet.
+ *
+ * @param qe operation to cancel
+ */
+void
+GNUNET_NAMESTORE_cancel (struct GNUNET_NAMESTORE_QueueEntry *qe)
+{
+ if (qe)
+ GNUNET_free(qe);
+}
+
+
+
+
+/* end of namestore_stub_api.c */
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