1 files changed, 169 insertions, 0 deletions
diff --git a/src/include/gnunet_resolver_service.h b/src/include/gnunet_resolver_service.h
new file mode 100644
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--- /dev/null
+++ b/src/include/gnunet_resolver_service.h
@@ -0,0 +1,169 @@
+/*
+     This file is part of GNUnet.
+     (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2009 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 2, 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 include/gnunet_resolver_service.h
+ * @brief functions related to doing DNS lookups
+ * @author Christian Grothoff
+ */
+
+#ifndef GNUNET_RESOLVER_SERVICE_H
+#define GNUNET_RESOLVER_SERVICE_H
+
+#ifdef __cplusplus
+extern "C"
+{
+#if 0                           /* keep Emacsens' auto-indent happy */
+}
+#endif
+#endif
+
+#include "gnunet_configuration_lib.h"
+#include "gnunet_scheduler_lib.h"
+#include "gnunet_time_lib.h"
+
+
+/**
+ * Function called by the resolver for each address obtained from DNS.
+ *
+ * @param cls closure
+ * @param addr one of the addresses of the host, NULL for the last address
+ * @param addrlen length of the address
+ */
+typedef void (*GNUNET_RESOLVER_AddressCallback) (void *cls,
+                                                 const struct sockaddr * addr,
+                                                 socklen_t addrlen);
+
+
+/**
+ * Handle to a request given to the resolver.  Can be used to cancel
+ * the request prior to the timeout or successful execution.
+ */
+struct GNUNET_RESOLVER_RequestHandle;
+
+/**
+ * Create the connection to the resolver service.
+ *
+ * @param cfg configuration to use
+ */
+void
+GNUNET_RESOLVER_connect (const struct GNUNET_CONFIGURATION_Handle *cfg);
+
+
+/**
+ * Destroy the connection to the resolver service.
+ */
+void
+GNUNET_RESOLVER_disconnect (void);
+
+
+/**
+ * Convert a string to one or more IP addresses.
+ *
+ * @param hostname the hostname to resolve
+ * @param af AF_INET or AF_INET6; use AF_UNSPEC for "any"
+ * @param callback function to call with addresses
+ * @param callback_cls closure for callback
+ * @param timeout how long to try resolving
+ * @return handle that can be used to cancel the request, NULL on error
+ */
+struct GNUNET_RESOLVER_RequestHandle *
+GNUNET_RESOLVER_ip_get (const char *hostname, int af,
+                        struct GNUNET_TIME_Relative timeout,
+                        GNUNET_RESOLVER_AddressCallback callback,
+                        void *callback_cls);
+
+
+/**
+ * Resolve our hostname to an IP address.
+ *
+ * @param af AF_INET or AF_INET6; use AF_UNSPEC for "any"
+ * @param callback function to call with addresses
+ * @param cls closure for callback
+ * @param timeout how long to try resolving
+ * @return handle that can be used to cancel the request, NULL on error
+ */
+struct GNUNET_RESOLVER_RequestHandle *
+GNUNET_RESOLVER_hostname_resolve (int af,
+                                  struct GNUNET_TIME_Relative timeout,
+                                  GNUNET_RESOLVER_AddressCallback callback,
+                                  void *cls);
+
+
+/**
+ * Function called by the resolver for each hostname obtained from DNS.
+ *
+ * @param cls closure
+ * @param hostname one of the names for the host, NULL
+ *        on the last call to the callback
+ */
+typedef void (*GNUNET_RESOLVER_HostnameCallback) (void *cls,
+                                                  const char *hostname);
+
+/**
+ * Get local fully qualified domain name
+ *
+ * @return local hostname, caller must free
+ */
+char *
+GNUNET_RESOLVER_local_fqdn_get (void);
+
+
+/**
+ * Perform a reverse DNS lookup.
+ *
+ * @param sa host address
+ * @param salen length of host address
+ * @param do_resolve use GNUNET_NO to return numeric hostname
+ * @param timeout how long to try resolving
+ * @param callback function to call with hostnames
+ * @param cls closure for callback
+ * @return handle that can be used to cancel the request, NULL on error
+ */
+struct GNUNET_RESOLVER_RequestHandle *
+GNUNET_RESOLVER_hostname_get (const struct sockaddr *sa, socklen_t salen,
+                              int do_resolve,
+                              struct GNUNET_TIME_Relative timeout,
+                              GNUNET_RESOLVER_HostnameCallback callback,
+                              void *cls);
+
+
+/**
+ * Cancel a request that is still pending with the resolver.
+ * Note that a client MUST NOT cancel a request that has
+ * been completed (i.e, the callback has been called to
+ * signal timeout or the final result).
+ *
+ * @param rh handle of request to cancel
+ */
+void
+GNUNET_RESOLVER_request_cancel (struct GNUNET_RESOLVER_RequestHandle *rh);
+
+
+#if 0                           /* keep Emacsens' auto-indent happy */
+{
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+/* ifndef GNUNET_RESOLVER_SERVICE_H */
+#endif
+/* end of gnunet_resolver_service.h */