plane hacking

5 files changed, 359 insertions, 22 deletions

diff --git a/src/block/Makefile.am b/src/block/Makefile.am
index 2fc0c0081..b37c7705e 100644
--- a/src/block/Makefile.am
+++ b/src/block/Makefile.am
@@ -13,8 +13,19 @@ endif
 lib_LTLIBRARIES = libgnunetblock.la
 
 plugin_LTLIBRARIES = \
+  libgnunet_plugin_block_dht.la \
   libgnunet_plugin_block_fs.la \
-  libgnunet_plugin_block_template.la 
+  libgnunet_plugin_block_template.la \
+  libgnunet_plugin_block_test.la 
+
+libgnunet_plugin_block_dht_la_SOURCES = \
+  plugin_block_dht.c
+libgnunet_plugin_block_dht_la_LIBADD = \
+  $(top_builddir)/src/hello/libgnunethello.la \
+  $(top_builddir)/src/block/libgnunetblock.la \
+  $(top_builddir)/src/util/libgnunetutil.la 
+libgnunet_plugin_block_dht_la_LDFLAGS = \
+ $(GN_PLUGIN_LDFLAGS)
 
 libgnunet_plugin_block_fs_la_SOURCES = \
   plugin_block_fs.c
@@ -31,6 +42,14 @@ libgnunet_plugin_block_template_la_LIBADD = \
 libgnunet_plugin_block_template_la_LDFLAGS = \
  $(GN_PLUGIN_LDFLAGS)
 
+libgnunet_plugin_block_test_la_SOURCES = \
+  plugin_block_test.c
+libgnunet_plugin_block_test_la_LIBADD = \
+  $(top_builddir)/src/block/libgnunetblock.la \
+  $(top_builddir)/src/util/libgnunetutil.la 
+libgnunet_plugin_block_test_la_LDFLAGS = \
+ $(GN_PLUGIN_LDFLAGS)
+
 
 libgnunetblock_la_SOURCES = \
   block.c plugin_block.h
diff --git a/src/block/plugin_block_dht.c b/src/block/plugin_block_dht.c
new file mode 100644
index 000000000..8312a69b5
--- /dev/null
+++ b/src/block/plugin_block_dht.c
@@ -0,0 +1,163 @@
+/*
+     This file is part of GNUnet
+     (C) 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 block/plugin_block_dht.c
+ * @brief block plugin for DHT internals (right now, find-peer requests only);
+ *        other plugins should be used to store "useful" data in the
+ *        DHT (see fs block plugin)
+ * @author Christian Grothoff
+ */
+
+#include "platform.h"
+#include "gnunet_hello_lib.h"
+#include "plugin_block.h"
+
+#define DEBUG_DHT GNUNET_NO
+
+
+/**
+ * Function called to validate a reply or a request.  For
+ * request evaluation, simply pass "NULL" for the reply_block.
+ *
+ * @param cls closure
+ * @param type block type
+ * @param query original query (hash)
+ * @param bf pointer to bloom filter associated with query; possibly updated (!)
+ * @param bf_mutator mutation value for bf
+ * @param xquery extrended query data (can be NULL, depending on type)
+ * @param xquery_size number of bytes in xquery
+ * @param reply_block response to validate
+ * @param reply_block_size number of bytes in reply block
+ * @return characterization of result
+ */
+static enum GNUNET_BLOCK_EvaluationResult
+block_plugin_dht_evaluate (void *cls,
+                           enum GNUNET_BLOCK_Type type,
+                           const GNUNET_HashCode *query,
+                           struct GNUNET_CONTAINER_BloomFilter **bf,
+                           int32_t bf_mutator,
+                           const void *xquery,
+                           size_t xquery_size,
+                           const void *reply_block,
+                           size_t reply_block_size)
+{
+  if (type != GNUNET_BLOCK_TYPE_DHT_HELLO)  
+    return GNUNET_BLOCK_EVALUATION_TYPE_NOT_SUPPORTED;
+  if (xquery_size != 0)
+    return GNUNET_BLOCK_EVALUATION_REQUEST_INVALID;
+  if (reply_block_size == 0)
+    return GNUNET_BLOCK_EVALUATION_REQUEST_VALID;
+  GNUNET_break (NULL == *bf);
+  return GNUNET_BLOCK_EVALUATION_OK_LAST;
+}
+
+
+/**
+ * Function called to obtain the key for a block.
+ *
+ * @param cls closure
+ * @param type block type
+ * @param block block to get the key for
+ * @param block_size number of bytes in block
+ * @param key set to the key (query) for the given block
+ * @return GNUNET_OK on success, GNUNET_SYSERR if type not supported
+ *         (or if extracting a key from a block of this type does not work)
+ */
+static int
+block_plugin_dht_get_key (void *cls,
+                          enum GNUNET_BLOCK_Type type,
+                          const void *block,
+                          size_t block_size,
+                          GNUNET_HashCode *key)
+{
+  const struct GNUNET_MessageHeader *msg;
+  const struct GNUNET_HELLO_Message *hello;
+  struct GNUNET_PeerIdentity *pid;
+
+  if (type != GNUNET_BLOCK_TYPE_DHT_HELLO)
+    return GNUNET_SYSERR;
+  if (block_size < sizeof (struct GNUNET_MessageHeader))
+    {
+      GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
+                       "block-dht",
+                       _("Block not of type %u\n"),
+                       GNUNET_BLOCK_TYPE_DHT_HELLO);
+      return GNUNET_SYSERR;
+    }
+  msg = block;
+  if (block_size != ntohs (msg->size))
+    {
+      GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
+                       "block-dht",
+                       _("Size mismatch for block\n"),
+                       GNUNET_BLOCK_TYPE_DHT_HELLO);
+      return GNUNET_SYSERR;
+    }
+  hello = block;
+  pid = (struct GNUNET_PeerIdentity*) key;
+  if (GNUNET_OK !=
+      GNUNET_HELLO_get_id (hello,
+                           pid))
+    {
+      GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
+                       "block-dht",
+                       _("Block of type %u is malformed\n"),
+                       GNUNET_BLOCK_TYPE_DHT_HELLO);
+      return GNUNET_SYSERR;
+    }
+  return GNUNET_OK;
+}
+                                  
+
+/**
+ * Entry point for the plugin.
+ */
+void *
+gnunet_plugin_block_dht_init (void *cls)
+{
+  static enum GNUNET_BLOCK_Type types[] = 
+    {
+      GNUNET_BLOCK_TYPE_DHT_HELLO,
+      GNUNET_BLOCK_TYPE_ANY /* end of list */
+    };
+  struct GNUNET_BLOCK_PluginFunctions *api;
+
+  api = GNUNET_malloc (sizeof (struct GNUNET_BLOCK_PluginFunctions));
+  api->evaluate = &block_plugin_dht_evaluate;
+  api->get_key = &block_plugin_dht_get_key;
+  api->types = types;
+  return api;
+}
+
+
+/**
+ * Exit point from the plugin.
+ */
+void *
+gnunet_plugin_block_dht_done (void *cls)
+{
+  struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
+
+  GNUNET_free (api);
+  return NULL;
+}
+
+/* end of plugin_block_dht.c */
diff --git a/src/block/plugin_block_fs.c b/src/block/plugin_block_fs.c
index 3ad15a0c6..d4e510abe 100644
--- a/src/block/plugin_block_fs.c
+++ b/src/block/plugin_block_fs.c
@@ -74,8 +74,8 @@ block_plugin_fs_evaluate (void *cls,
 
   switch (type)
     {
-    case GNUNET_BLOCK_TYPE_DBLOCK:
-    case GNUNET_BLOCK_TYPE_IBLOCK:
+    case GNUNET_BLOCK_TYPE_FS_DBLOCK:
+    case GNUNET_BLOCK_TYPE_FS_IBLOCK:
       if (xquery_size != 0) 
         {
           GNUNET_break_op (0);
@@ -84,8 +84,8 @@ block_plugin_fs_evaluate (void *cls,
       if (reply_block == NULL)
         return GNUNET_BLOCK_EVALUATION_REQUEST_VALID;
       return GNUNET_BLOCK_EVALUATION_OK_LAST;
-    case GNUNET_BLOCK_TYPE_KBLOCK:
-    case GNUNET_BLOCK_TYPE_NBLOCK:
+    case GNUNET_BLOCK_TYPE_FS_KBLOCK:
+    case GNUNET_BLOCK_TYPE_FS_NBLOCK:
       if (xquery_size != 0) 
         {
           GNUNET_break_op (0);
@@ -111,7 +111,7 @@ block_plugin_fs_evaluate (void *cls,
         }
       GNUNET_CONTAINER_bloomfilter_add (*bf, &mhash);
       return GNUNET_BLOCK_EVALUATION_OK_MORE;
-    case GNUNET_BLOCK_TYPE_SBLOCK:
+    case GNUNET_BLOCK_TYPE_FS_SBLOCK:
       if (xquery_size != sizeof (GNUNET_HashCode)) 
         {
           GNUNET_break_op (0);
@@ -133,8 +133,9 @@ block_plugin_fs_evaluate (void *cls,
                        &sh,
                        sizeof (GNUNET_HashCode)))
         {
-          GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
-                      _("Reply mismatched in terms of namespace.  Discarded.\n"));
+          GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING,
+                           "block-fs",
+                           _("Reply mismatched in terms of namespace.  Discarded.\n"));
           return GNUNET_BLOCK_EVALUATION_RESULT_INVALID;
         }
       GNUNET_CRYPTO_hash (reply_block,
@@ -185,11 +186,11 @@ block_plugin_fs_get_key (void *cls,
 
   switch (type)
     {
-    case GNUNET_BLOCK_TYPE_DBLOCK:
-    case GNUNET_BLOCK_TYPE_IBLOCK:
+    case GNUNET_BLOCK_TYPE_FS_DBLOCK:
+    case GNUNET_BLOCK_TYPE_FS_IBLOCK:
       GNUNET_CRYPTO_hash (block, block_size, key);
       return GNUNET_OK;
-    case GNUNET_BLOCK_TYPE_KBLOCK:
+    case GNUNET_BLOCK_TYPE_FS_KBLOCK:
       if (block_size < sizeof (struct KBlock))
         {
           GNUNET_break_op (0);
@@ -218,7 +219,7 @@ block_plugin_fs_get_key (void *cls,
                             sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
                             key);
       return GNUNET_OK;
-    case GNUNET_BLOCK_TYPE_SBLOCK:
+    case GNUNET_BLOCK_TYPE_FS_SBLOCK:
       if (block_size < sizeof (struct SBlock))
         {
           GNUNET_break_op (0);
@@ -243,7 +244,7 @@ block_plugin_fs_get_key (void *cls,
       if (key != NULL)
         *key = sb->identifier;
       return GNUNET_OK;
-    case GNUNET_BLOCK_TYPE_NBLOCK:
+    case GNUNET_BLOCK_TYPE_FS_NBLOCK:
       if (block_size < sizeof (struct NBlock))
         {
           GNUNET_break_op (0);
@@ -303,11 +304,11 @@ libgnunet_plugin_block_fs_init (void *cls)
 {
   static enum GNUNET_BLOCK_Type types[] = 
     {
-      GNUNET_BLOCK_TYPE_DBLOCK,
-      GNUNET_BLOCK_TYPE_IBLOCK,
-      GNUNET_BLOCK_TYPE_KBLOCK,
-      GNUNET_BLOCK_TYPE_SBLOCK,
-      GNUNET_BLOCK_TYPE_NBLOCK,
+      GNUNET_BLOCK_TYPE_FS_DBLOCK,
+      GNUNET_BLOCK_TYPE_FS_IBLOCK,
+      GNUNET_BLOCK_TYPE_FS_KBLOCK,
+      GNUNET_BLOCK_TYPE_FS_SBLOCK,
+      GNUNET_BLOCK_TYPE_FS_NBLOCK,
       GNUNET_BLOCK_TYPE_ANY /* end of list */
     };
   struct GNUNET_BLOCK_PluginFunctions *api;
diff --git a/src/block/plugin_block_test.c b/src/block/plugin_block_test.c
new file mode 100644
index 000000000..1cf8c701d
--- /dev/null
+++ b/src/block/plugin_block_test.c
@@ -0,0 +1,154 @@
+/*
+     This file is part of GNUnet
+     (C) 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 block/plugin_block_test.c
+ * @brief block plugin to test the DHT as a simple key-value store;
+ *        this plugin simply accepts any (new) response for any key
+ * @author Christian Grothoff
+ */
+
+#include "platform.h"
+#include "plugin_block.h"
+
+#define DEBUG_TEST GNUNET_NO
+
+
+/**
+ * Number of bits we set per entry in the bloomfilter.
+ * Do not change!
+ */
+#define BLOOMFILTER_K 16
+
+/**
+ * Function called to validate a reply or a request.  For
+ * request evaluation, simply pass "NULL" for the reply_block.
+ *
+ * @param cls closure
+ * @param type block type
+ * @param query original query (hash)
+ * @param bf pointer to bloom filter associated with query; possibly updated (!)
+ * @param bf_mutator mutation value for bf
+ * @param xquery extrended query data (can be NULL, depending on type)
+ * @param xquery_size number of bytes in xquery
+ * @param reply_block response to validate
+ * @param reply_block_size number of bytes in reply block
+ * @return characterization of result
+ */
+static enum GNUNET_BLOCK_EvaluationResult
+block_plugin_test_evaluate (void *cls,
+                           enum GNUNET_BLOCK_Type type,
+                           const GNUNET_HashCode *query,
+                           struct GNUNET_CONTAINER_BloomFilter **bf,
+                           int32_t bf_mutator,
+                           const void *xquery,
+                           size_t xquery_size,
+                           const void *reply_block,
+                           size_t reply_block_size)
+{
+  GNUNET_HashCode chash;
+  GNUNET_HashCode mhash;
+
+  if (type != GNUNET_BLOCK_TYPE_TEST)  
+    return GNUNET_BLOCK_EVALUATION_TYPE_NOT_SUPPORTED;
+  if (xquery_size != 0)
+    GNUNET_BLOCK_EVALUATION_REQUEST_INVALID;
+  if (reply_block_size == 0)
+    GNUNET_BLOCK_EVALUATION_REQUEST_VALID;
+
+  GNUNET_CRYPTO_hash (reply_block,
+                      reply_block_size,
+                      &chash);
+  GNUNET_BLOCK_mingle_hash (&chash, bf_mutator, &mhash);
+  if (NULL != *bf)
+    {
+      if (GNUNET_YES == GNUNET_CONTAINER_bloomfilter_test (*bf,
+                                                           &mhash))
+        return GNUNET_BLOCK_EVALUATION_OK_DUPLICATE;
+    }
+  else
+    {
+      *bf = GNUNET_CONTAINER_bloomfilter_init (NULL, 
+                                               8,
+                                               BLOOMFILTER_K);
+    }
+  GNUNET_CONTAINER_bloomfilter_add (*bf, &mhash);  
+  return GNUNET_BLOCK_EVALUATION_OK_MORE;
+}
+
+
+/**
+ * Function called to obtain the key for a block.
+ *
+ * @param cls closure
+ * @param type block type
+ * @param block block to get the key for
+ * @param block_size number of bytes in block
+ * @param key set to the key (query) for the given block
+ * @return GNUNET_OK on success, GNUNET_SYSERR if type not supported
+ *         (or if extracting a key from a block of this type does not work)
+ */
+static int
+block_plugin_test_get_key (void *cls,
+                          enum GNUNET_BLOCK_Type type,
+                          const void *block,
+                          size_t block_size,
+                          GNUNET_HashCode *key)
+{
+  /* always fails since there is no fixed relationship between
+     keys and values for test values */
+  return GNUNET_SYSERR;
+}
+                                  
+
+/**
+ * Entry point for the plugin.
+ */
+void *
+gnunet_plugin_block_test_init (void *cls)
+{
+  static enum GNUNET_BLOCK_Type types[] = 
+    {
+      GNUNET_BLOCK_TYPE_TEST,
+      GNUNET_BLOCK_TYPE_ANY /* end of list */
+    };
+  struct GNUNET_BLOCK_PluginFunctions *api;
+
+  api = GNUNET_malloc (sizeof (struct GNUNET_BLOCK_PluginFunctions));
+  api->evaluate = &block_plugin_test_evaluate;
+  api->get_key = &block_plugin_test_get_key;
+  api->types = types;
+  return api;
+}
+
+
+/**
+ * Exit point from the plugin.
+ */
+void *
+gnunet_plugin_block_test_done (void *cls)
+{
+  struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
+
+  GNUNET_free (api);
+  return NULL;
+}
+
+/* end of plugin_block_test.c */
diff --git a/src/block/test_block.c b/src/block/test_block.c
index 02719e5aa..bb9a1f01b 100644
--- a/src/block/test_block.c
+++ b/src/block/test_block.c
@@ -38,14 +38,14 @@ test_fs (struct GNUNET_BLOCK_Context *ctx)
   memset (block, 1, sizeof (block));
   if (GNUNET_OK !=
       GNUNET_BLOCK_get_key (ctx,
-                            GNUNET_BLOCK_TYPE_DBLOCK,
+                            GNUNET_BLOCK_TYPE_FS_DBLOCK,
                             block,
                             sizeof (block),
                             &key))
     return 1;
   if (GNUNET_BLOCK_EVALUATION_OK_LAST !=
       GNUNET_BLOCK_evaluate (ctx,
-                             GNUNET_BLOCK_TYPE_DBLOCK,
+                             GNUNET_BLOCK_TYPE_FS_DBLOCK,
                              &key,
                              NULL, 0,
                              NULL, 0,
@@ -53,7 +53,7 @@ test_fs (struct GNUNET_BLOCK_Context *ctx)
     return 2;
   if (GNUNET_BLOCK_EVALUATION_REQUEST_VALID !=
       GNUNET_BLOCK_evaluate (ctx,
-                             GNUNET_BLOCK_TYPE_DBLOCK,
+                             GNUNET_BLOCK_TYPE_FS_DBLOCK,
                              &key,
                              NULL, 0,
                              NULL, 0,
@@ -62,7 +62,7 @@ test_fs (struct GNUNET_BLOCK_Context *ctx)
   GNUNET_log_skip (1, GNUNET_NO);
   if (GNUNET_BLOCK_EVALUATION_REQUEST_INVALID  !=
       GNUNET_BLOCK_evaluate (ctx,
-                             GNUNET_BLOCK_TYPE_DBLOCK,
+                             GNUNET_BLOCK_TYPE_FS_DBLOCK,
                              &key,
                              NULL, 0,
                              "bogus", 5,