/*
This file is part of GNUnet
- (C) 2010 Christian Grothoff (and other contributing authors)
+ (C) 2010, 2013 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 block/plugin_block_fs.c
+ * @file fs/plugin_block_fs.c
* @brief blocks used for file-sharing
* @author Christian Grothoff
*/
#include "platform.h"
#include "gnunet_block_plugin.h"
+#include "gnunet_fs_service.h"
#include "block_fs.h"
#include "gnunet_signatures.h"
-#define DEBUG_FS_BLOCK GNUNET_EXTRA_LOGGING
/**
* Number of bits we set per entry in the bloomfilter.
*/
static enum GNUNET_BLOCK_EvaluationResult
block_plugin_fs_evaluate (void *cls, enum GNUNET_BLOCK_Type type,
- const GNUNET_HashCode * query,
+ const struct 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)
{
- const struct SBlock *sb;
- GNUNET_HashCode chash;
- GNUNET_HashCode mhash;
- const GNUNET_HashCode *nsid;
- GNUNET_HashCode sh;
+ const struct UBlock *ub;
+ struct GNUNET_HashCode hc;
+ struct GNUNET_HashCode chash;
+ struct GNUNET_HashCode mhash;
switch (type)
{
case GNUNET_BLOCK_TYPE_FS_DBLOCK:
case GNUNET_BLOCK_TYPE_FS_IBLOCK:
- if (xquery_size != 0)
+ if (0 != xquery_size)
{
GNUNET_break_op (0);
return GNUNET_BLOCK_EVALUATION_REQUEST_INVALID;
}
- if (reply_block == NULL)
+ if (NULL == reply_block)
return GNUNET_BLOCK_EVALUATION_REQUEST_VALID;
return GNUNET_BLOCK_EVALUATION_OK_LAST;
- case GNUNET_BLOCK_TYPE_FS_KBLOCK:
- case GNUNET_BLOCK_TYPE_FS_NBLOCK:
- if (xquery_size != 0)
+ case GNUNET_BLOCK_TYPE_FS_UBLOCK:
+ if (0 != xquery_size)
{
GNUNET_break_op (0);
return GNUNET_BLOCK_EVALUATION_REQUEST_INVALID;
}
- if (reply_block == NULL)
+ if (NULL == reply_block)
return GNUNET_BLOCK_EVALUATION_REQUEST_VALID;
- if (NULL != bf)
+
+ if (reply_block_size < sizeof (struct UBlock))
{
- 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);
+ GNUNET_break_op (0);
+ return GNUNET_BLOCK_EVALUATION_RESULT_INVALID;
}
- return GNUNET_BLOCK_EVALUATION_OK_MORE;
- case GNUNET_BLOCK_TYPE_FS_SBLOCK:
- if (xquery_size != sizeof (GNUNET_HashCode))
+ ub = reply_block;
+ GNUNET_CRYPTO_hash (&ub->verification_key,
+ sizeof (ub->verification_key),
+ &hc);
+ if (0 != memcmp (&hc,
+ query,
+ sizeof (struct GNUNET_HashCode)))
{
GNUNET_break_op (0);
- return GNUNET_BLOCK_EVALUATION_REQUEST_INVALID;
+ return GNUNET_BLOCK_EVALUATION_RESULT_INVALID;
}
- if (reply_block == NULL)
- return GNUNET_BLOCK_EVALUATION_REQUEST_VALID;
- nsid = xquery;
- if (reply_block_size < sizeof (struct SBlock))
+ if (reply_block_size != ntohl (ub->purpose.size) + sizeof (struct GNUNET_CRYPTO_EcdsaSignature))
{
GNUNET_break_op (0);
return GNUNET_BLOCK_EVALUATION_RESULT_INVALID;
}
- sb = reply_block;
- GNUNET_CRYPTO_hash (&sb->subspace,
- sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
- &sh);
- if (0 != memcmp (nsid, &sh, sizeof (GNUNET_HashCode)))
+ if (GNUNET_OK !=
+ GNUNET_CRYPTO_ecdsa_verify (GNUNET_SIGNATURE_PURPOSE_FS_UBLOCK,
+ &ub->purpose,
+ &ub->signature,
+ &ub->verification_key))
{
- GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, "block-fs",
- _
- ("Reply mismatched in terms of namespace. Discarded.\n"));
+ GNUNET_break_op (0);
return GNUNET_BLOCK_EVALUATION_RESULT_INVALID;
}
if (NULL != bf)
static int
block_plugin_fs_get_key (void *cls, enum GNUNET_BLOCK_Type type,
const void *block, size_t block_size,
- GNUNET_HashCode * key)
+ struct GNUNET_HashCode *key)
{
- const struct KBlock *kb;
- const struct SBlock *sb;
- const struct NBlock *nb;
+ const struct UBlock *ub;
switch (type)
{
case GNUNET_BLOCK_TYPE_FS_IBLOCK:
GNUNET_CRYPTO_hash (block, block_size, key);
return GNUNET_OK;
- case GNUNET_BLOCK_TYPE_FS_KBLOCK:
- if (block_size < sizeof (struct KBlock))
+ case GNUNET_BLOCK_TYPE_FS_UBLOCK:
+ if (block_size < sizeof (struct UBlock))
{
- GNUNET_break_op (0);
- return GNUNET_NO;
- }
- kb = block;
- if (block_size - sizeof (struct KBlock) !=
- ntohl (kb->purpose.size) -
- sizeof (struct GNUNET_CRYPTO_RsaSignaturePurpose) -
- sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded))
- {
- GNUNET_break_op (0);
- return GNUNET_NO;
- }
- if (GNUNET_OK !=
- GNUNET_CRYPTO_rsa_verify (GNUNET_SIGNATURE_PURPOSE_FS_KBLOCK,
- &kb->purpose, &kb->signature, &kb->keyspace))
- {
- GNUNET_break_op (0);
- return GNUNET_NO;
- }
- if (key != NULL)
- GNUNET_CRYPTO_hash (&kb->keyspace,
- sizeof (struct
- GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
- key);
- return GNUNET_OK;
- case GNUNET_BLOCK_TYPE_FS_SBLOCK:
- if (block_size < sizeof (struct SBlock))
- {
- GNUNET_break_op (0);
- return GNUNET_NO;
- }
- sb = block;
- if (block_size !=
- ntohl (sb->purpose.size) + sizeof (struct GNUNET_CRYPTO_RsaSignature))
- {
- GNUNET_break_op (0);
- return GNUNET_NO;
- }
- if (GNUNET_OK !=
- GNUNET_CRYPTO_rsa_verify (GNUNET_SIGNATURE_PURPOSE_FS_SBLOCK,
- &sb->purpose, &sb->signature, &sb->subspace))
- {
- GNUNET_break_op (0);
- return GNUNET_NO;
- }
- if (key != NULL)
- *key = sb->identifier;
- return GNUNET_OK;
- case GNUNET_BLOCK_TYPE_FS_NBLOCK:
- if (block_size < sizeof (struct NBlock))
- {
- GNUNET_break_op (0);
- return GNUNET_NO;
- }
- nb = block;
- if (block_size - sizeof (struct NBlock) !=
- ntohl (nb->ns_purpose.size) -
- sizeof (struct GNUNET_CRYPTO_RsaSignaturePurpose) -
- sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded))
- {
- GNUNET_break_op (0);
- return GNUNET_NO;
- }
- if (block_size !=
- ntohl (nb->ksk_purpose.size) +
- sizeof (struct GNUNET_CRYPTO_RsaSignature))
- {
- GNUNET_break_op (0);
- return GNUNET_NO;
- }
- if (GNUNET_OK !=
- GNUNET_CRYPTO_rsa_verify (GNUNET_SIGNATURE_PURPOSE_FS_NBLOCK_KSIG,
- &nb->ksk_purpose, &nb->ksk_signature,
- &nb->keyspace))
- {
- GNUNET_break_op (0);
- return GNUNET_NO;
- }
- if (GNUNET_OK !=
- GNUNET_CRYPTO_rsa_verify (GNUNET_SIGNATURE_PURPOSE_FS_NBLOCK,
- &nb->ns_purpose, &nb->ns_signature,
- &nb->subspace))
- {
- GNUNET_break_op (0);
- return GNUNET_NO;
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
}
- /* FIXME: we used to xor ID with NSID,
- * why not here? */
- if (key != NULL)
- GNUNET_CRYPTO_hash (&nb->keyspace,
- sizeof (struct
- GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
- key);
+ ub = block;
+ GNUNET_CRYPTO_hash (&ub->verification_key,
+ sizeof (ub->verification_key),
+ key);
return GNUNET_OK;
default:
+ GNUNET_break (0);
return GNUNET_SYSERR;
}
}
{
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_FS_UBLOCK,
GNUNET_BLOCK_TYPE_ANY /* end of list */
};
struct GNUNET_BLOCK_PluginFunctions *api;
- api = GNUNET_malloc (sizeof (struct GNUNET_BLOCK_PluginFunctions));
+ api = GNUNET_new (struct GNUNET_BLOCK_PluginFunctions);
api->evaluate = &block_plugin_fs_evaluate;
api->get_key = &block_plugin_fs_get_key;
api->types = types;
projects / oweals / gnunet.git / blobdiff