-large cleanup and bugfixes

1 files changed, 226 insertions, 0 deletions

diff --git a/src/gns/gnunet-service-gns_resolver.h b/src/gns/gnunet-service-gns_resolver.h
new file mode 100644
index 000000000..2b0c4755d
--- /dev/null
+++ b/src/gns/gnunet-service-gns_resolver.h
@@ -0,0 +1,226 @@
+#ifndef GNS_RESOLVER_H
+#define GNS_RESOLVER_H
+
+#include "gns.h"
+
+#define DHT_OPERATION_TIMEOUT  GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 3)
+#define DHT_LOOKUP_TIMEOUT DHT_OPERATION_TIMEOUT
+#define DHT_GNS_REPLICATION_LEVEL 5
+#define MAX_DNS_LABEL_LENGTH 63
+
+/*
+ * DLL to hold the authority chain
+ * we had to pass in the resolution process
+ */
+struct AuthorityChain
+{
+  struct AuthorityChain *prev;
+
+  struct AuthorityChain *next;
+  
+  /* the zone hash of the authority */
+  GNUNET_HashCode zone;
+
+  /* (local) name of the authority */
+  char* name;
+
+  /* was the ns entry fresh */
+  int fresh;
+};
+
+/* handle to a resolution process */
+struct ResolverHandle;
+
+/**
+ * processor for a resultion result
+ *
+ * @param cls the closure
+ * @param rh the resolution handle
+ * @param rd_count number of results
+ * @pram rd resukt data
+ */
+typedef void (*RecordLookupProcessor) (void *cls,
+                                  uint32_t rd_count,
+                                  const struct GNUNET_NAMESTORE_RecordData *rd);
+
+
+/**
+ * processor for a shorten result
+ *
+ * @param cls the closure
+ * @param name shortened name
+ */
+typedef void (*ShortenResultProcessor) (void *cls, const char* name);
+
+
+/**
+ * processor for an authority result
+ *
+ * @param cls the closure
+ * @param name name
+ */
+typedef void (*GetAuthorityResultProcessor) (void *cls, const char* name);
+
+/**
+ * processor for a resultion result
+ *
+ * @param cls the closure
+ * @param rh the resolution handle
+ * @param rd_count number of results
+ * @param rd result data
+ */
+typedef void (*ResolutionResultProcessor) (void *cls,
+                                  struct ResolverHandle *rh,
+                                  uint32_t rd_count,
+                                  const struct GNUNET_NAMESTORE_RecordData *rd);
+
+
+/**
+ * Resoltion status indicator
+ * EXISTS: the name to lookup exists
+ * EXPIRED: the name in the record expired
+ */
+enum ResolutionStatus
+{
+  EXISTS = 1,
+  EXPIRED = 2
+};
+
+/**
+ * Handle to a currenty pending resolution
+ */
+struct ResolverHandle
+{
+  /* The name to resolve */
+  char *name;
+
+  /* has this query been answered? how many matches */
+  int answered;
+
+  /* the authoritative zone to query */
+  GNUNET_HashCode authority;
+
+  /* the name of the authoritative zone to query */
+  char *authority_name;
+
+  /**
+   * we have an authority in namestore that
+   * may be able to resolve
+   */
+  int authority_found;
+
+  /* a handle for dht lookups. should be NULL if no lookups are in progress */
+  struct GNUNET_DHT_GetHandle *get_handle;
+
+  /* timeout task for dht lookups */
+  GNUNET_SCHEDULER_TaskIdentifier dht_timeout_task;
+
+  /* called when resolution phase finishes */
+  ResolutionResultProcessor proc;
+  
+  /* closure passed to proc */
+  void* proc_cls;
+
+  /* DLL to store the authority chain */
+  struct AuthorityChain *authority_chain_head;
+
+  /* DLL to store the authority chain */
+  struct AuthorityChain *authority_chain_tail;
+  
+  /* status of the resolution result */
+  enum ResolutionStatus status;
+
+};
+
+
+/**
+ * Handle to a record lookup
+ */
+struct RecordLookupHandle
+{
+  /* the record type to look up */
+  enum GNUNET_GNS_RecordType record_type;
+
+  /* the name to look up */
+  char *name;
+
+  /* Method to call on record resolution result */
+  RecordLookupProcessor proc;
+
+  /* closure to pass to proc */
+  void* proc_cls;
+
+};
+
+
+/**
+ * Handle to a shorten context
+ */
+struct NameShortenHandle
+{
+
+
+  /* Method to call on shorten result */
+  ShortenResultProcessor proc;
+
+  /* closure to pass to proc */
+  void* proc_cls;
+
+};
+
+/**
+ * Handle to a get authority context
+ */
+struct GetNameAuthorityHandle
+{
+  
+  /* the name to look up authority for */
+  char* name;
+  
+  /* Method to call on result */
+  GetAuthorityResultProcessor proc;
+
+  /* closure to pass to proc */
+  void* proc_cls;
+
+};
+
+
+/**
+ * Lookup of a record in a specific zone
+ * calls lookup result processor on result
+ *
+ * @param zone the root zone
+ * @param record_type the record type to look up
+ * @param proc the processor to call
+ * @param cls the closure to pass to proc
+ */
+void
+gns_resolver_lookup_record(GNUNET_HashCode zone,
+                           uint32_t record_type,
+                           const char* name,
+                           RecordLookupProcessor proc,
+                           void* cls);
+
+void
+gns_resolver_shorten_name(GNUNET_HashCode zone,
+                          const char* name,
+                          ShortenResultProcessor proc,
+                          void* cls);
+
+/**
+ * Tries to resolve the authority for name
+ * in our namestore
+ *
+ * @param zone the root zone to look up for
+ * @param name the name to lookup up
+ * @param proc the processor to call when finished
+ * @param cls the closure to pass to the processor
+ */
+void
+gns_resolver_get_authority(GNUNET_HashCode zone,
+                           const char* name,
+                           GetAuthorityResultProcessor proc,
+                           void* cls);
+
+#endif