From 6b2fb63de633b086a91e7733ca0dd5591198c20c Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Wed, 18 Jan 2012 19:28:14 +0000
Subject: implementing GNUNET_TESTING_get_peer_identity (addressing #2083)

---
 src/include/gnunet_testing_lib.h | 14 ++++++++
 src/testing/Makefile.am          |  1 +
 src/testing/helper.c             | 75 ++++++++++++++++++++++++++++++++++++++++
 3 files changed, 90 insertions(+)
 create mode 100644 src/testing/helper.c

diff --git a/src/include/gnunet_testing_lib.h b/src/include/gnunet_testing_lib.h
index 711d676a2..03b837668 100644
--- a/src/include/gnunet_testing_lib.h
+++ b/src/include/gnunet_testing_lib.h
@@ -505,6 +505,20 @@ int
 GNUNET_TESTING_test_daemon_running (struct GNUNET_TESTING_Daemon *daemon);
 
 
+/**
+ * Obtain the peer identity of the peer with the given configuration
+ * handle.  This function reads the private key of the peer, obtains
+ * the public key and hashes it.
+ *
+ * @param cfg configuration of the peer
+ * @param pid where to store the peer identity
+ * @return GNUNET_OK on success, GNUNET_SYSERR on failure
+ */
+int
+GNUNET_TESTING_get_peer_identity (const struct GNUNET_CONFIGURATION_Handle *cfg,
+				  struct GNUNET_PeerIdentity *pid);
+
+
 /**
  * Restart (stop and start) a GNUnet daemon.
  *
diff --git a/src/testing/Makefile.am b/src/testing/Makefile.am
index 5432fb0d1..050691d13 100644
--- a/src/testing/Makefile.am
+++ b/src/testing/Makefile.am
@@ -36,6 +36,7 @@ endif
 lib_LTLIBRARIES = libgnunettesting.la
 
 libgnunettesting_la_SOURCES = \
+  helper.c \
   testing.c  \
   testing_group.c \
   testing_peergroup.c
diff --git a/src/testing/helper.c b/src/testing/helper.c
new file mode 100644
index 000000000..ebb37ebe5
--- /dev/null
+++ b/src/testing/helper.c
@@ -0,0 +1,75 @@
+/*
+      This file is part of GNUnet
+      (C) 2012 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 testing/helper.c
+ * @brief helper functions for testing
+ * @author Christian Grothoff
+ *
+ */
+#include "platform.h"
+#include "gnunet_testing_lib.h"
+
+
+
+
+/**
+ * Obtain the peer identity of the peer with the given configuration
+ * handle.  This function reads the private key of the peer, obtains
+ * the public key and hashes it.
+ *
+ * @param cfg configuration of the peer
+ * @param pid where to store the peer identity
+ * @return GNUNET_OK on success, GNUNET_SYSERR on failure
+ */
+int
+GNUNET_TESTING_get_peer_identity (const struct GNUNET_CONFIGURATION_Handle *cfg,
+				  struct GNUNET_PeerIdentity *pid)
+{
+  char *keyfile;
+  struct GNUNET_CRYPTO_RsaPrivateKey *my_private_key;
+  struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded my_public_key;
+
+  if (GNUNET_OK !=
+      GNUNET_CONFIGURATION_get_value_filename (cfg, "GNUNETD", "HOSTKEY",
+                                               &keyfile))
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                _
+                ("Peer is lacking HOSTKEY configuration setting.\n"));
+    return GNUNET_SYSERR;
+  }
+  my_private_key = GNUNET_CRYPTO_rsa_key_create_from_file (keyfile);
+  GNUNET_free (keyfile);
+  if (my_private_key == NULL)
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                _("Could not access hostkey.\n"));
+    return GNUNET_SYSERR;
+  }
+  GNUNET_CRYPTO_rsa_key_get_public (my_private_key, &my_public_key);
+  GNUNET_CRYPTO_rsa_key_free (my_private_key);
+  GNUNET_CRYPTO_hash (&my_public_key, sizeof (my_public_key),
+                      &pid->hashPubKey);
+  return GNUNET_OK;
+}
+
+
+/* end of helper.c */
-- 
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