/*
This file is part of GNUnet
- (C) 2012 Christian Grothoff (and other contributing authors)
+ (C) 2012,2013 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
#define BLOOMFILTER_K 16
-/**
- * Check if the regex block is well formed, including all edges
- *
- * @param block The start of the block.
- * @param size The size of the block.
- *
- * @return GNUNET_OK in case it's fine, GNUNET_SYSERR otherwise.
- */
-static int
-check_mesh_regex_block (const struct MeshRegexBlock *block, size_t size)
-{
- struct MeshRegexEdge *edge;
- unsigned int n;
- unsigned int n_token;
- unsigned int i;
- size_t offset;
- char *aux;
-
- offset = sizeof (struct MeshRegexBlock);
- if (offset > size) // Is it safe to access the regex block?
- return GNUNET_SYSERR;
- n = ntohl (block->n_proof);
- offset =+ n;
- if (offset > size) // Is it safe to access the regex proof?
- return GNUNET_SYSERR;
- aux = (char *) &block[1]; // Skip regex block
- aux = &aux[n]; // Skip regex proof
- n = ntohl (block->n_edges);
- for (i = 0; i < n; n++) // aux always points at the end of the previous block
- {
- offset += sizeof (struct MeshRegexEdge);
- if (offset > size) // Is it safe to access the next edge block?
- return GNUNET_SYSERR;
- edge = (struct MeshRegexEdge *) aux;
- n_token = ntohl (edge->n_token);
- offset += n_token;
- if (offset > size) // Is it safe to access the edge token?
- return GNUNET_SYSERR;
- aux = (char *) &edge[1]; // Skip edge block
- aux = &aux[n_token]; // Skip edge token
- }
- // The total size should be exactly the size of (regex + all edges) blocks
- return (offset == size) ? GNUNET_OK : GNUNET_SYSERR;
-}
-
-
/**
* Function called to validate a reply or a request. For
* request evaluation, simply pass "NULL" for the reply_block.
switch (type)
{
- case GNUNET_BLOCK_TYPE_MESH_PEER:
- if (0 != xquery_size)
- {
- GNUNET_break_op (0);
- return GNUNET_BLOCK_EVALUATION_REQUEST_INVALID;
- }
- if (NULL == reply_block)
- return GNUNET_BLOCK_EVALUATION_REQUEST_VALID;
- if (sizeof (struct PBlock) != reply_block_size)
- return GNUNET_BLOCK_EVALUATION_RESULT_INVALID;
- return GNUNET_BLOCK_EVALUATION_OK_LAST;
- case GNUNET_BLOCK_TYPE_MESH_PEER_BY_TYPE:
- /* FIXME: have an xquery? not sure */
- if (0 != xquery_size)
- {
- GNUNET_break_op (0);
- return GNUNET_BLOCK_EVALUATION_REQUEST_INVALID;
- }
- if (NULL == reply_block)
- return GNUNET_BLOCK_EVALUATION_REQUEST_VALID;
- if (sizeof (struct PBlock) != reply_block_size)
- return GNUNET_BLOCK_EVALUATION_RESULT_INVALID;
- if (NULL != bf)
- {
- 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
+ case GNUNET_BLOCK_TYPE_MESH_PEER:
+ if (0 != xquery_size)
{
- *bf = GNUNET_CONTAINER_bloomfilter_init (NULL, 8, BLOOMFILTER_K);
+ GNUNET_break_op (0);
+ return GNUNET_BLOCK_EVALUATION_REQUEST_INVALID;
}
- GNUNET_CONTAINER_bloomfilter_add (*bf, &mhash);
- }
- return GNUNET_BLOCK_EVALUATION_OK_MORE;
- case GNUNET_BLOCK_TYPE_MESH_REGEX:
- if (0 != xquery_size)
- {
- GNUNET_break_op (0);
- return GNUNET_BLOCK_EVALUATION_REQUEST_INVALID;
- }
- if (NULL == reply_block)
- return GNUNET_BLOCK_EVALUATION_REQUEST_VALID;
- if (GNUNET_OK != check_mesh_regex_block (reply_block, reply_block_size))
- return GNUNET_BLOCK_EVALUATION_RESULT_INVALID;
- if (NULL != bf)
- {
- GNUNET_CRYPTO_hash (reply_block, reply_block_size, &chash);
- GNUNET_BLOCK_mingle_hash (&chash, bf_mutator, &mhash);
- if (NULL != *bf)
+ if (NULL == reply_block)
+ return GNUNET_BLOCK_EVALUATION_REQUEST_VALID;
+ if (sizeof (struct PBlock) != reply_block_size)
+ return GNUNET_BLOCK_EVALUATION_RESULT_INVALID;
+ if (NULL != bf)
{
- if (GNUNET_YES == GNUNET_CONTAINER_bloomfilter_test (*bf, &mhash))
- return GNUNET_BLOCK_EVALUATION_OK_DUPLICATE;
+ 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);
}
- else
+
+ return GNUNET_BLOCK_EVALUATION_OK_LAST;
+
+
+ case GNUNET_BLOCK_TYPE_MESH_PEER_BY_TYPE:
+ /* FIXME: have an xquery? not sure */
+ if (0 != xquery_size)
{
- *bf = GNUNET_CONTAINER_bloomfilter_init (NULL, 8, BLOOMFILTER_K);
+ GNUNET_break_op (0);
+ return GNUNET_BLOCK_EVALUATION_REQUEST_INVALID;
}
- GNUNET_CONTAINER_bloomfilter_add (*bf, &mhash);
- }
- return GNUNET_BLOCK_EVALUATION_OK_MORE;
- case GNUNET_BLOCK_TYPE_MESH_REGEX_ACCEPT:
- if (0 != xquery_size)
- {
- GNUNET_break_op (0);
- return GNUNET_BLOCK_EVALUATION_REQUEST_INVALID;
- }
- if (NULL == reply_block)
- return GNUNET_BLOCK_EVALUATION_REQUEST_VALID;
- if (sizeof (struct MeshRegexAccept) != reply_block_size)
- return GNUNET_BLOCK_EVALUATION_RESULT_INVALID;
- if (NULL != bf)
- {
- GNUNET_CRYPTO_hash (reply_block, reply_block_size, &chash);
- GNUNET_BLOCK_mingle_hash (&chash, bf_mutator, &mhash);
- if (NULL != *bf)
+ if (NULL == reply_block)
+ return GNUNET_BLOCK_EVALUATION_REQUEST_VALID;
+ if (sizeof (struct PBlock) != reply_block_size)
{
- if (GNUNET_YES == GNUNET_CONTAINER_bloomfilter_test (*bf, &mhash))
- return GNUNET_BLOCK_EVALUATION_OK_DUPLICATE;
+ GNUNET_break_op(0);
+ return GNUNET_BLOCK_EVALUATION_RESULT_INVALID;
}
- else
+ if (NULL != bf)
{
- *bf = GNUNET_CONTAINER_bloomfilter_init (NULL, 8, BLOOMFILTER_K);
+ 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_CONTAINER_bloomfilter_add (*bf, &mhash);
- }
- return GNUNET_BLOCK_EVALUATION_OK_MORE;
- default:
- return GNUNET_BLOCK_EVALUATION_TYPE_NOT_SUPPORTED;
+ return GNUNET_BLOCK_EVALUATION_OK_MORE;
+
+ default:
+ return GNUNET_BLOCK_EVALUATION_TYPE_NOT_SUPPORTED;
}
}
struct GNUNET_HashCode * key)
{
const struct PBlock *pb;
+ GNUNET_MESH_ApplicationType app_type;
pb = block;
switch (type)
*key = pb->id.hashPubKey;
return GNUNET_OK;
case GNUNET_BLOCK_TYPE_MESH_PEER_BY_TYPE:
- GNUNET_CRYPTO_hash (&pb->type, sizeof(GNUNET_MESH_ApplicationType), key);
+ app_type = ntohl (pb->type);
+ GNUNET_CRYPTO_hash (&app_type, sizeof(GNUNET_MESH_ApplicationType), key);
return GNUNET_OK;
default:
+ GNUNET_break (0);
return GNUNET_SYSERR;
}
}
projects / oweals / gnunet.git / blobdiff