/*
This file is part of GNUnet
- (C) 2012 Christian Grothoff (and other contributing authors)
+ (C) 2012-2014 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
* @file include/gnunet_gns_service.h
* @brief API to the GNS service
* @author Martin Schanzenbach
- *
- * TODO:
- * - decide what goes into storage API and what into GNS-service API
- * - decide where to pass/expose/check keys / signatures
- * - are GNS private keys per peer or per user?
*/
-
-
#ifndef GNUNET_GNS_SERVICE_H
#define GNUNET_GNS_SERVICE_H
/**
- * Connection to the GNS service.
+ * String we use to indicate the local master zone or a
+ * root entry in the current zone.
*/
-struct GNUNET_GNS_Handle;
+#define GNUNET_GNS_MASTERZONE_STR "+"
/**
- * Handle to control a get operation.
+ * Connection to the GNS service.
*/
-struct GNUNET_GNS_LookupHandle;
+struct GNUNET_GNS_Handle;
/**
- * Handle to control a shorten operation
+ * Handle to control a lookup operation.
*/
+struct GNUNET_GNS_LookupRequest;
-/**
- * Record types
- * Based on GNUNET_DNSPARSER_TYPEs (standard DNS)
- */
-enum GNUNET_GNS_RecordType
-{
- /* Standard DNS */
- GNUNET_GNS_RECORD_TYPE_A = GNUNET_DNSPARSER_TYPE_A,
- GNUNET_GNS_RECORD_TYPE_NS = GNUNET_DNSPARSER_TYPE_NS,
- GNUNET_GNS_RECORD_TYPE_CNAME = GNUNET_DNSPARSER_TYPE_CNAME,
- GNUNET_GNS_RECORD_TYPE_SOA = GNUNET_DNSPARSER_TYPE_SOA,
- GNUNET_GNS_RECORD_TYPE_PTR = GNUNET_DNSPARSER_TYPE_PTR,
- GNUNET_GNS_RECORD_MX = GNUNET_DNSPARSER_TYPE_MX,
- GNUNET_GNS_RECORD_TXT = GNUNET_DNSPARSER_TYPE_TXT,
- GNUNET_GNS_RECORD_AAAA = GNUNET_DNSPARSER_TYPE_AAAA,
-
- /* GNS specific */
- GNUNET_GNS_RECORD_PKEY = GNUNET_NAMESTORE_TYPE_PKEY,
- GNUNET_GNS_RECORD_PSEU = GNUNET_NAMESTORE_TYPE_PSEU
-};
/**
* Initialize the connection with the GNS service.
- * FIXME: Do we need the ht_len?
*
* @param cfg configuration to use
- * @param ht_len size of the internal hash table to use for parallel lookups
- * @return NULL on error
+ * @return handle to the GNS service, or NULL on error
*/
struct GNUNET_GNS_Handle *
-GNUNET_GNS_connect (const struct GNUNET_CONFIGURATION_Handle *cfg,
- unsigned int ht_len);
+GNUNET_GNS_connect (const struct GNUNET_CONFIGURATION_Handle *cfg);
/**
GNUNET_GNS_disconnect (struct GNUNET_GNS_Handle *handle);
-/* *************** Standard API: lookup ******************* */
-
/**
- * Iterator called on each result obtained for a GNS
- * lookup
+ * Iterator called on obtained result for a GNS lookup.
*
* @param cls closure
- * @param name "name" of the original lookup
- * @param rd_count number of records
+ * @param rd_count number of records in @a rd
* @param rd the records in reply
*/
-typedef void (*GNUNET_GNS_LookupIterator) (void *cls,
- const char * name,
- uint32_t rd_count,
- const struct GNUNET_NAMESTORE_RecordData *rd);
+typedef void (*GNUNET_GNS_LookupResultProcessor) (void *cls,
+ uint32_t rd_count,
+ const struct GNUNET_GNSRECORD_Data *rd);
+
+
+/**
+ * Options for the GNS lookup.
+ */
+enum GNUNET_GNS_LocalOptions
+{
+ /**
+ * Defaults, look in cache, then in DHT.
+ */
+ GNUNET_GNS_LO_DEFAULT = 0,
+
+ /**
+ * Never look in the DHT, keep request to local cache.
+ */
+ GNUNET_GNS_LO_NO_DHT = 1,
+
+ /**
+ * For the rightmost label, only look in the cache (it
+ * is our master zone), for the others, the DHT is OK.
+ */
+ GNUNET_GNS_LO_LOCAL_MASTER = 2
+};
/**
*
* @param handle handle to the GNS service
* @param name the name to look up
- * @param type the GNUNET_GNS_RecordType to look for
- * @param iter function to call on each result
- * @param iter_cls closure for iter
- *
- * @return handle to stop the async lookup
+ * @param zone zone to look in
+ * @param type the GNS record type to look for
+ * @param options local options for the lookup
+ * @param shorten_zone_key the private key of the shorten zone (can be NULL);
+ * specify to enable automatic shortening (given a PSEU
+ * record, if a given pseudonym is not yet used in the
+ * shorten zone, we automatically add the respective zone
+ * under that name)
+ * @param proc function to call on result
+ * @param proc_cls closure for processor
+ * @return handle to the queued request
*/
-struct GNUNET_GNS_LookupHandle *
-GNUNET_GNS_lookup_start (struct GNUNET_GNS_Handle *handle,
- const char * name,
- enum GNUNET_GNS_RecordType type,
- GNUNET_GNS_LookupIterator iter,
- void *iter_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,
+ const struct GNUNET_CRYPTO_EcdsaPrivateKey *shorten_zone_key,
+ GNUNET_GNS_LookupResultProcessor proc,
+ void *proc_cls);
/**
- * Stop async GNS lookup. Frees associated resources.
- *
- * @param lookup_handle lookup operation to stop.
+ * Cancel pending lookup request
*
- * On return lookup_handle will no longer be valid, caller
- * must not use again!!!
+ * @param lr the lookup request to cancel
*/
void
-GNUNET_GNS_lookup_stop (struct GNUNET_GNS_LookupHandle *lookup_handle);
-
-/* *************** Standard API: shorten ******************* */
-
-
-/**
- * Processor called on for a name shortening result
- * called only once
- *
- * @param cls closure
- * @param name "name" of the original lookup
- * @param short_name the shortened name or NULL if no result
- */
-typedef void (*GNUNET_GNS_ShortenResultProcessor) (void *cls,
- const char * name,
- const char* short_name);
+GNUNET_GNS_lookup_cancel (struct GNUNET_GNS_LookupRequest *lr);
-/**
- * Perform a shorten operation on name using the GNS.
- *
- * @param handle handle to the GNS service
- * @param name the name to shorten
- * @param proc processor to call on result
- * @param iter_cls closure for processor
- *
- * @return handle to the shorten operation
- */
-struct GNUNET_GNS_ShortenHandle *
-GNUNET_GNS_shorten (struct GNUNET_GNS_Handle *handle,
- const char * name,
- GNUNET_GNS_ShortenResultProcessor proc,
- void *iter_cls);
#if 0 /* keep Emacsens' auto-indent happy */
{
#endif