/**
* Create a new path
*
- * @param lenght How many hops will the path have.
+ * @param length How many hops will the path have.
*
* @return A newly allocated path with a peer array of the specified length.
*/
{
struct MeshPeerPath *p;
- p = GNUNET_malloc (sizeof(struct MeshPeerPath));
+ p = GNUNET_malloc (sizeof (struct MeshPeerPath));
if (length > 0)
{
p->length = length;
- p->peers = GNUNET_malloc (length * sizeof(GNUNET_PEER_Id));
+ p->peers = GNUNET_malloc (length * sizeof (GNUNET_PEER_Id));
}
return p;
}
/**
* Invert the path
*
- * @param p the path to invert
+ * @param path the path to invert
*/
void
path_invert (struct MeshPeerPath *path)
/**
* Duplicate a path, incrementing short peer's rc.
*
- * @param p The path to duplicate.
+ * @param path The path to duplicate.
*/
struct MeshPeerPath *
path_duplicate (struct MeshPeerPath *path)
struct MeshPeerPath *aux;
unsigned int i;
- aux = path_new(path->length);
- memcpy (aux->peers, path->peers, path->length * sizeof(GNUNET_PEER_Id));
+ aux = path_new (path->length);
+ memcpy (aux->peers, path->peers, path->length * sizeof (GNUNET_PEER_Id));
for (i = 0; i < path->length; i++)
- GNUNET_PEER_change_rc(path->peers[i], 1);
+ GNUNET_PEER_change_rc (path->peers[i], 1);
return aux;
}
* Recusively update the info about what is the first hop to reach the node
*
* @param tree Tree this nodes belongs to.
- * @param parent_id Short ID from node form which to start updating.
+ * @param parent The node form which to start updating.
* @param hop If known, ID of the first hop.
* If not known, NULL to find out and pass on children.
*/
struct MeshTunnelTreeNode *parent,
struct GNUNET_PeerIdentity *hop);
-/**
- * Find the first peer whom to send a packet to go down this path
- *
- * @param t The tunnel tree to use
- * @param peer The peerinfo of the peer we are trying to reach
- *
- * @return peerinfo of the peer who is the first hop in the tunnel
- * NULL on error
- */
-struct GNUNET_PeerIdentity *
-path_get_first_hop (struct MeshTunnelTree *t, GNUNET_PEER_Id peer)
-{
- struct GNUNET_PeerIdentity id;
- struct GNUNET_PeerIdentity *r;
-
- GNUNET_PEER_resolve (peer, &id);
- r = GNUNET_CONTAINER_multihashmap_get (t->first_hops, &id.hashPubKey);
- if (NULL == r)
- {
- struct MeshTunnelTreeNode *n;
-
- n = tree_find_peer(t, peer);
- if (NULL != t->me && NULL != n)
- {
- tree_node_update_first_hops(t, n, NULL);
- r = GNUNET_CONTAINER_multihashmap_get (t->first_hops, &id.hashPubKey);
- GNUNET_assert (NULL != r);
- }
- else
- {
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
- "Tree structure inconsistent! me: %p, n: %p",
- t->me, n);
- GNUNET_break (0);
- }
- }
-
- return r;
-}
-
/**
- * Get the length of a path
+ * Get the length of a path.
*
- * @param path The path to measure, with the local peer at any point of it
+ * @param path The path to measure, with the local peer at any point of it.
*
- * @return Number of hops to reach destination
- * UINT_MAX in case the peer is not in the path
+ * @return Number of hops to reach destination.
+ * UINT_MAX in case the peer is not in the path.
*/
unsigned int
path_get_length (struct MeshPeerPath *path)
}
-/**
- * Get the cost of the path relative to the already built tunnel tree
- *
- * @param t The tunnel tree to which compare
- * @param path The individual path to reach a peer
- *
- * @return Number of hops to reach destination, UINT_MAX in case the peer is not
- * in the path
- *
- * TODO: remove dummy implementation, look into the tunnel tree
- */
-unsigned int
-path_get_cost (struct MeshTunnelTree *t, struct MeshPeerPath *path)
-{
- return path_get_length (path);
-}
-
-
/**
* Destroy the path and free any allocated resources linked to it
*
if (NULL == p)
return GNUNET_OK;
GNUNET_PEER_decrement_rcs (p->peers, p->length);
- GNUNET_free (p->peers);
+ GNUNET_free_non_null (p->peers);
GNUNET_free (p);
return GNUNET_OK;
}
* @return Newly allocated node
*/
static struct MeshTunnelTreeNode *
-tree_node_new(struct MeshTunnelTreeNode *parent, GNUNET_PEER_Id peer)
+tree_node_new (struct MeshTunnelTreeNode *parent, GNUNET_PEER_Id peer)
{
struct MeshTunnelTreeNode *node;
- node = GNUNET_malloc(sizeof(struct MeshTunnelTreeNode));
+ node = GNUNET_malloc (sizeof (struct MeshTunnelTreeNode));
node->peer = peer;
- GNUNET_PEER_change_rc(peer, 1);
+ GNUNET_PEER_change_rc (peer, 1);
node->parent = parent;
if (NULL != parent)
- GNUNET_CONTAINER_DLL_insert(parent->children_head,
- parent->children_tail,
- node);
+ GNUNET_CONTAINER_DLL_insert (parent->children_head, parent->children_tail,
+ node);
return node;
}
* Recursively find the given peer.
*
* @param parent Node where to start looking.
- * @param peer Peer to find.
+ * @param peer_id Short ID of the peer to find.
*
* @return Pointer to the node of the peer. NULL if not found.
*/
static struct MeshTunnelTreeNode *
-tree_node_find_peer (struct MeshTunnelTreeNode *parent,
- GNUNET_PEER_Id peer_id)
+tree_node_find_peer (struct MeshTunnelTreeNode *parent, GNUNET_PEER_Id peer_id)
{
struct MeshTunnelTreeNode *n;
struct MeshTunnelTreeNode *r;
* Recusively update the info about what is the first hop to reach the node
*
* @param tree Tree this nodes belongs to.
- * @param parent_id Short ID from node form which to start updating.
+ * @param parent ID from node form which to start updating.
* @param hop If known, ID of the first hop.
* If not known, NULL to find out and pass on children.
*/
struct MeshTunnelTreeNode *n;
#if MESH_TREE_DEBUG
- GNUNET_PEER_resolve(parent->peer, &id);
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "tree: Finding first hop for %s.\n",
- GNUNET_i2s (&id));
+ GNUNET_PEER_resolve (parent->peer, &id);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "tree: Finding first hop for %s.\n",
+ GNUNET_i2s (&id));
#endif
if (NULL == hop)
{
while (aux != tree->me)
{
#if MESH_TREE_DEBUG
- GNUNET_PEER_resolve(old->peer, &id);
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "tree: ... its not %s.\n",
- GNUNET_i2s (&id));
+ GNUNET_PEER_resolve (aux->peer, &id);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "tree: ... checking %s.\n",
+ GNUNET_i2s (&id));
#endif
old = aux;
aux = aux->parent;
- GNUNET_assert(NULL != aux);
+ GNUNET_assert (NULL != aux);
}
#if MESH_TREE_DEBUG
- GNUNET_PEER_resolve(old->peer, &id);
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "tree: It's %s!\n",
- GNUNET_i2s (&id));
+ GNUNET_PEER_resolve (old->peer, &id);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "tree: It's %s!\n",
+ GNUNET_i2s (&id));
#endif
hop = π
- GNUNET_PEER_resolve(old->peer, hop);
+ GNUNET_PEER_resolve (old->peer, hop);
}
- GNUNET_PEER_resolve(parent->peer, &id);
+ GNUNET_PEER_resolve (parent->peer, &id);
copy = GNUNET_CONTAINER_multihashmap_get (tree->first_hops, &id.hashPubKey);
if (NULL == copy)
- copy = GNUNET_malloc(sizeof(struct GNUNET_PeerIdentity));
+ copy = GNUNET_malloc (sizeof (struct GNUNET_PeerIdentity));
*copy = *hop;
- (void) GNUNET_CONTAINER_multihashmap_put(
- tree->first_hops,
- &id.hashPubKey,
- copy,
- GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE);
+ (void) GNUNET_CONTAINER_multihashmap_put (tree->first_hops, &id.hashPubKey,
+ copy,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE);
for (n = parent->children_head; NULL != n; n = n->next)
{
static void
-tree_node_debug(struct MeshTunnelTreeNode *n, uint16_t level)
+tree_node_debug (struct MeshTunnelTreeNode *n, uint16_t level)
{
struct MeshTunnelTreeNode *c;
struct GNUNET_PeerIdentity id;;
uint16_t i;
for (i = 0; i < level; i++)
- fprintf(stderr, " ");
+ fprintf (stderr, " ");
if (n->status == MESH_PEER_READY)
- fprintf(stderr, "#");
+ fprintf (stderr, "#");
if (n->status == MESH_PEER_SEARCHING)
- fprintf(stderr, "+");
+ fprintf (stderr, "+");
if (n->status == MESH_PEER_RELAY)
- fprintf(stderr, "-");
+ fprintf (stderr, "-");
if (n->status == MESH_PEER_RECONNECTING)
- fprintf(stderr, "*");
+ fprintf (stderr, "*");
- GNUNET_PEER_resolve(n->peer, &id);
- fprintf(stderr, "%s, [%u, %p] ", GNUNET_i2s (&id), n->peer, n);
+ GNUNET_PEER_resolve (n->peer, &id);
+ fprintf (stderr, "%s, [%u, %p] ", GNUNET_i2s (&id), n->peer, n);
if (NULL != n->parent)
{
- GNUNET_PEER_resolve(n->parent->peer, &id);
- fprintf(stderr, "(-> %s [%u])\n", GNUNET_i2s(&id), n->parent->peer);
+ GNUNET_PEER_resolve (n->parent->peer, &id);
+ fprintf (stderr, "(-> %s [%u])\n", GNUNET_i2s (&id), n->parent->peer);
}
else
- fprintf(stderr, "(root)\n");
+ fprintf (stderr, "(root)\n");
for (c = n->children_head; NULL != c; c = c->next)
- tree_node_debug(c, level + 1);
+ tree_node_debug (c, level + 1);
}
/**
* Destroys and frees the node and all children
*
- * @param n Parent node to be destroyed
+ * @param parent Parent node to be destroyed
*/
static void
tree_node_destroy (struct MeshTunnelTreeNode *parent)
{
struct MeshTunnelTreeNode *n;
struct MeshTunnelTreeNode *next;
+
#if MESH_TREE_DEBUG
struct GNUNET_PeerIdentity id;
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "tree: Destroying node %u\n",
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "tree: Destroying node %u\n",
parent->peer);
GNUNET_PEER_resolve (parent->peer, &id);
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "tree: (%s)\n",
- GNUNET_i2s (&id));
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "tree: (%s)\n", GNUNET_i2s (&id));
#endif
n = parent->children_head;
while (NULL != n)
{
next = n->next;
- tree_node_destroy(n);
+ tree_node_destroy (n);
n = next;
}
- GNUNET_PEER_change_rc(parent->peer, -1);
+ GNUNET_PEER_change_rc (parent->peer, -1);
if (NULL != parent->parent)
- GNUNET_CONTAINER_DLL_remove(parent->parent->children_head,
- parent->parent->children_tail,
- parent);
- GNUNET_free(parent);
+ GNUNET_CONTAINER_DLL_remove (parent->parent->children_head,
+ parent->parent->children_tail, parent);
+ GNUNET_free (parent);
}
/**
- * Create a new tunnel tree associated to a tunnel
+ * Create a new tree.
*
- * @param t Tunnel this tree will represent
- * @param peer A short peer id of the root of the tree
+ * @param peer A short peer id of the root of the tree.
*
- * @return A newly allocated and initialized tunnel tree
+ * @return A newly allocated and initialized tunnel tree.
*/
struct MeshTunnelTree *
tree_new (GNUNET_PEER_Id peer)
{
struct MeshTunnelTree *tree;
- tree = GNUNET_malloc(sizeof (struct MeshTunnelTree));
- tree->first_hops = GNUNET_CONTAINER_multihashmap_create(32);
- tree->root = tree_node_new(NULL, peer);
+ tree = GNUNET_malloc (sizeof (struct MeshTunnelTree));
+ tree->first_hops = GNUNET_CONTAINER_multihashmap_create (32);
+ tree->root = tree_node_new (NULL, peer);
tree->root->status = MESH_PEER_ROOT;
- return tree;
-}
-
+ if (1 == peer)
+ {
+ tree->me = tree->root;
+ }
-/**
- * Set own identity in the tree
- *
- * @param tree Tree.
- * @param peer A short peer id of local peer.
- */
-void
-tree_set_me (struct MeshTunnelTree *tree, GNUNET_PEER_Id peer)
-{
- tree->me = tree_find_peer(tree, peer);
+ return tree;
}
-/**
- * Get the id of the local node of the tree.
- *
- * @param tree Tree whose local id we want to now.
- *
- * @return Short peer id of local peer.
- */
-GNUNET_PEER_Id
-tree_get_me (struct MeshTunnelTree *tree)
-{
- if (NULL != tree->me)
- return tree->me->peer;
- else
- return (GNUNET_PEER_Id) 0;
-}
-
/**
* Set the status of a node.
*
* @param tree Tree.
- * @param peer A short peer id of local peer.
+ * @param peer A short peer id of the node.
+ * @param status New status to set.
*/
void
-tree_set_status (struct MeshTunnelTree *tree,
- GNUNET_PEER_Id peer,
+tree_set_status (struct MeshTunnelTree *tree, GNUNET_PEER_Id peer,
enum MeshPeerState status)
{
struct MeshTunnelTreeNode *n;
- n = tree_find_peer(tree, peer);
+ n = tree_find_peer (tree, peer);
if (NULL == n)
return;
n->status = status;
/**
* Get the status of a node.
*
- * @param tree Tree whose local id we want to now.
+ * @param tree Tree whose node's status we want to now.
+ * @param peer A short peer id of the node.
*
- * @return Short peer id of local peer.
+ * @return Status of the peer.
*/
enum MeshPeerState
tree_get_status (struct MeshTunnelTree *tree, GNUNET_PEER_Id peer)
{
struct MeshTunnelTreeNode *n;
- n = tree_find_peer(tree, peer);
+ n = tree_find_peer (tree, peer);
if (NULL == n)
return MESH_PEER_INVALID;
return n->status;
}
+/**
+ * Find the first peer whom to send a packet to go down this path
+ *
+ * @param t The tunnel tree to use
+ * @param peer The peerinfo of the peer we are trying to reach
+ *
+ * @return peerinfo of the peer who is the first hop in the tunnel
+ * NULL on error
+ */
+struct GNUNET_PeerIdentity *
+tree_get_first_hop (struct MeshTunnelTree *t, GNUNET_PEER_Id peer)
+{
+ struct GNUNET_PeerIdentity id;
+ struct GNUNET_PeerIdentity *r;
+
+ GNUNET_PEER_resolve (peer, &id);
+ r = GNUNET_CONTAINER_multihashmap_get (t->first_hops, &id.hashPubKey);
+ if (NULL == r)
+ {
+ struct MeshTunnelTreeNode *n;
+
+ n = tree_find_peer (t, peer);
+ if (NULL != t->me && NULL != n)
+ {
+ tree_node_update_first_hops (t, n, NULL);
+ r = GNUNET_CONTAINER_multihashmap_get (t->first_hops, &id.hashPubKey);
+ GNUNET_assert (NULL != r);
+ }
+ else
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ "Tree structure inconsistent! me: %p, n: %p", t->me, n);
+ GNUNET_break (0);
+ }
+ }
+
+ return r;
+}
+
+
/**
* Find the given peer in the tree.
*
* @param tree Tree where to look for the peer.
- * @param peer Peer to find.
+ * @param peer_id Short ID of the peer to find.
*
* @return Pointer to the node of the peer. NULL if not found.
*/
struct MeshTunnelTreeNode *
tree_find_peer (struct MeshTunnelTree *tree, GNUNET_PEER_Id peer_id)
{
- return tree_node_find_peer(tree->root, peer_id);
+ return tree_node_find_peer (tree->root, peer_id);
}
* @param tree Tree this node belongs to
* @param parent Node to be clean, potentially with children
* @param cb Callback to use to notify about disconnected peers.
+ * @param cbcls Closure for cb.
*/
static void
tree_mark_peers_disconnected (struct MeshTunnelTree *tree,
struct MeshTunnelTreeNode *parent,
- MeshTreeCallback cb,
- void *cbcls)
+ MeshTreeCallback cb, void *cbcls)
{
struct GNUNET_PeerIdentity *pi;
struct GNUNET_PeerIdentity id;
}
/* Remove and free info about first hop */
- GNUNET_PEER_resolve(parent->peer, &id);
- pi = GNUNET_CONTAINER_multihashmap_get(tree->first_hops, &id.hashPubKey);
- GNUNET_CONTAINER_multihashmap_remove_all(tree->first_hops, &id.hashPubKey);
+ GNUNET_PEER_resolve (parent->peer, &id);
+ pi = GNUNET_CONTAINER_multihashmap_get (tree->first_hops, &id.hashPubKey);
+ GNUNET_CONTAINER_multihashmap_remove_all (tree->first_hops, &id.hashPubKey);
if (NULL != pi)
- GNUNET_free(pi);
+ GNUNET_free (pi);
}
/**
* Iterate over all children of the local node.
- *
+ *
* @param tree Tree to use. Must have "me" set.
* @param cb Callback to call over each child.
* @param cls Closure.
*/
void
-tree_iterate_children (struct MeshTunnelTree *tree,
- MeshTreeCallback cb,
+tree_iterate_children (struct MeshTunnelTree *tree, MeshTreeCallback cb,
void *cls)
{
struct MeshTunnelTreeNode *n;
* If not known, NULL to find out and pass on children.
*/
void
-tree_update_first_hops (struct MeshTunnelTree *tree,
- GNUNET_PEER_Id parent_id,
+tree_update_first_hops (struct MeshTunnelTree *tree, GNUNET_PEER_Id parent_id,
struct GNUNET_PeerIdentity *hop)
{
- tree_node_update_first_hops(tree,
- tree_find_peer(tree, parent_id),
- hop);
+ tree_node_update_first_hops (tree, tree_find_peer (tree, parent_id), hop);
}
* a new path to it or destroy it explicitly, taking care of it's child nodes.
*
* @param t Tunnel tree where to delete the path from.
- * @param peer Destination peer whose path we want to remove.
+ * @param peer_id Short ID of the destination peer whose path we want to remove.
* @param cb Callback to use to notify about disconnected peers.
* @param cbcls Closure for cb.
*
* NULL when not found
*/
struct MeshTunnelTreeNode *
-tree_del_path (struct MeshTunnelTree *t,
- GNUNET_PEER_Id peer_id,
- MeshTreeCallback cb,
- void *cbcls)
+tree_del_path (struct MeshTunnelTree *t, GNUNET_PEER_Id peer_id,
+ MeshTreeCallback cb, void *cbcls)
{
struct MeshTunnelTreeNode *parent;
struct MeshTunnelTreeNode *node;
#if MESH_TREE_DEBUG
struct GNUNET_PeerIdentity id;
- GNUNET_PEER_resolve(peer_id, &id);
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "tree: Deleting path to %s.\n",
- GNUNET_i2s (&id));
+
+ GNUNET_PEER_resolve (peer_id, &id);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "tree: Deleting path to %s.\n",
+ GNUNET_i2s (&id));
#endif
if (peer_id == t->root->peer)
return NULL;
if (n->peer == peer_id)
{
/* Was already pathless, waiting for reconnection */
- GNUNET_CONTAINER_DLL_remove (t->disconnected_head,
- t->disconnected_tail,
+ GNUNET_CONTAINER_DLL_remove (t->disconnected_head, t->disconnected_tail,
n);
return n;
}
node = n;
parent = n->parent;
- GNUNET_CONTAINER_DLL_remove(parent->children_head, parent->children_tail, n);
+ GNUNET_CONTAINER_DLL_remove (parent->children_head, parent->children_tail, n);
n->parent = NULL;
while (MESH_PEER_RELAY == parent->status && NULL == parent->children_head)
{
#if MESH_TREE_DEBUG
- GNUNET_PEER_resolve(parent->peer, &id);
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "tree: Deleting node %s.\n",
- GNUNET_i2s (&id));
+ GNUNET_PEER_resolve (parent->peer, &id);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "tree: Deleting node %s.\n",
+ GNUNET_i2s (&id));
#endif
n = parent->parent;
- tree_node_destroy(parent);
+ tree_node_destroy (parent);
parent = n;
}
#if MESH_TREE_DEBUG
- GNUNET_PEER_resolve(parent->peer, &id);
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "tree: Not deleted peer %s.\n",
- GNUNET_i2s (&id));
+ GNUNET_PEER_resolve (parent->peer, &id);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "tree: Not deleted peer %s.\n",
+ GNUNET_i2s (&id));
#endif
tree_mark_peers_disconnected (t, node, cb, cbcls);
* Return a newly allocated individual path to reach a peer from the local peer,
* according to the path tree of some tunnel.
*
- * @param t Tunnel from which to read the path tree
- * @param peer_info Destination peer to whom we want a path
+ * @param t Tunnel from which to read the path tree.
+ * @param peer Short ID of the destination peer to whom we want a path.
*
* @return A newly allocated individual path to reach the destination peer.
* Path must be destroyed afterwards.
*/
struct MeshPeerPath *
-tree_get_path_to_peer(struct MeshTunnelTree *t, GNUNET_PEER_Id peer)
+tree_get_path_to_peer (struct MeshTunnelTree *t, GNUNET_PEER_Id peer)
{
struct MeshTunnelTreeNode *n;
struct MeshPeerPath *p;
- GNUNET_PEER_Id myid = t->me->peer;
- n = tree_find_peer(t, peer);
+ n = tree_find_peer (t, peer);
if (NULL == n)
+ {
+ GNUNET_break (0);
return NULL;
- p = path_new(0);
+ }
+ p = path_new (0);
/* Building the path (inverted!) */
- while (n->peer != myid)
+ while (n->peer != 1)
{
- GNUNET_array_append(p->peers, p->length, n->peer);
- GNUNET_PEER_change_rc(n->peer, 1);
+ GNUNET_array_append (p->peers, p->length, n->peer);
+ GNUNET_PEER_change_rc (n->peer, 1);
n = n->parent;
if (NULL == n)
+ {
+ GNUNET_break (0);
+ path_destroy (p);
return NULL;
+ }
}
- GNUNET_array_append(p->peers, p->length, myid);
- GNUNET_PEER_change_rc(myid, 1);
+ GNUNET_array_append (p->peers, p->length, 1);
+ GNUNET_PEER_change_rc (1, 1);
- path_invert(p);
+ path_invert (p);
return p;
}
* - do not disconnect peers until new path is created & connected
*/
int
-tree_add_path (struct MeshTunnelTree *t,
- const struct MeshPeerPath *p,
- MeshTreeCallback cb,
- void *cbcls)
+tree_add_path (struct MeshTunnelTree *t, const struct MeshPeerPath *p,
+ MeshTreeCallback cb, void *cbcls)
{
struct MeshTunnelTreeNode *parent;
struct MeshTunnelTreeNode *oldnode;
struct MeshTunnelTreeNode *n;
struct MeshTunnelTreeNode *c;
struct GNUNET_PeerIdentity id;
- GNUNET_PEER_Id myid;
int me;
unsigned int i;
#if MESH_TREE_DEBUG
- GNUNET_PEER_resolve(p->peers[p->length - 1], &id);
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "tree: Adding path [%u] towards peer %s.\n",
- p->length,
- GNUNET_i2s (&id));
+ GNUNET_PEER_resolve (p->peers[p->length - 1], &id);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "tree: Adding path [%u] towards peer %s.\n", p->length,
+ GNUNET_i2s (&id));
#endif
- if (NULL != t->me)
- myid = t->me->peer;
- else
- myid = 0;
- GNUNET_assert(0 != p->length);
+ GNUNET_assert (0 != p->length);
parent = n = t->root;
if (n->peer != p->peers[0])
{
* - Length of the path is expected to be log N (size of whole network).
* - Each level of the tree is expected to have log n children (size of tree).
*/
- me = t->root->peer == myid ? 0 : -1;
+ me = t->root->peer == 1 ? 0 : -1;
for (i = 1; i < p->length; i++)
{
#if MESH_TREE_DEBUG
- GNUNET_PEER_resolve(p->peers[i], &id);
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "tree: Looking for peer %s.\n",
- GNUNET_i2s (&id));
+ GNUNET_PEER_resolve (p->peers[i], &id);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "tree: Looking for peer %s.\n",
+ GNUNET_i2s (&id));
#endif
parent = n;
- if (p->peers[i] == myid)
+ if (p->peers[i] == 1)
me = i;
for (c = n->children_head; NULL != c; c = c->next)
{
if (c->peer == p->peers[i])
{
#if MESH_TREE_DEBUG
- GNUNET_PEER_resolve(parent->peer, &id);
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "tree: Found in children of %s.\n",
- GNUNET_i2s (&id));
+ GNUNET_PEER_resolve (parent->peer, &id);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "tree: Found in children of %s.\n", GNUNET_i2s (&id));
#endif
n = c;
break;
break;
}
#if MESH_TREE_DEBUG
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "tree: All childen visited.\n");
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "tree: All childen visited.\n");
#endif
/* Add the rest of the path as a branch from parent. */
while (i < p->length)
{
#if MESH_TREE_DEBUG
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "tree: Adding peer %u to %u.\n",
- p->peers[i], parent->peer);
- GNUNET_PEER_resolve(p->peers[i], &id);
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "tree: Adding peer %s.\n",
- GNUNET_i2s (&id));
- GNUNET_PEER_resolve(parent->peer, &id);
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "tree: to %s.\n",
- GNUNET_i2s (&id));
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "tree: Adding peer %u to %u.\n",
+ p->peers[i], parent->peer);
+ GNUNET_PEER_resolve (p->peers[i], &id);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "tree: Adding peer %s.\n",
+ GNUNET_i2s (&id));
+ GNUNET_PEER_resolve (parent->peer, &id);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "tree: to %s.\n",
+ GNUNET_i2s (&id));
#endif
if (i == p->length - 1 && NULL != oldnode)
{
#if MESH_TREE_DEBUG
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "tree: Putting old node into place.\n");
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "tree: Putting old node into place.\n");
#endif
oldnode->parent = parent;
- GNUNET_CONTAINER_DLL_insert(parent->children_head,
- parent->children_tail,
- oldnode);
+ GNUNET_CONTAINER_DLL_insert (parent->children_head, parent->children_tail,
+ oldnode);
tree_node_update_first_hops (t, oldnode, NULL);
n = oldnode;
}
else
{
#if MESH_TREE_DEBUG
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "tree: Creating new node.\n");
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "tree: Creating new node.\n");
#endif
- n = tree_node_new(parent, p->peers[i]);
+ n = tree_node_new (parent, p->peers[i]);
n->status = MESH_PEER_RELAY;
- if (n->peer == myid)
+ if (n->peer == 1)
+ {
t->me = n;
+ me = i;
+ }
}
i++;
parent = n;
}
n->status = MESH_PEER_SEARCHING;
+ GNUNET_break (-1 != me);
+
/* Add info about first hop into hashmap. */
if (-1 != me && me < p->length - 1)
{
#if MESH_TREE_DEBUG
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "MESH: finding first hop (own pos %d/%u)\n",
- me, p->length - 1);
+ "MESH: finding first hop (own pos %d/%u)\n", me,
+ p->length - 1);
#endif
GNUNET_PEER_resolve (p->peers[me + 1], &id);
- tree_update_first_hops(t,
- p->peers[p->length - 1],
- &id);
+ tree_update_first_hops (t, p->peers[me + 1], &id);
}
#if MESH_TREE_DEBUG
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "tree: New node added.\n");
+ else
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "MESH: was last in path, not updating first hops (%d/%u)\n",
+ me, p->length - 1);
+ }
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "tree: New node added.\n");
#endif
+ if (NULL == t->me)
+ t->me = tree_find_peer (t, 1);
return GNUNET_OK;
}
* @return Short ID of the first disconnected peer in the tree.
*/
GNUNET_PEER_Id
-tree_notify_connection_broken (struct MeshTunnelTree *t,
- GNUNET_PEER_Id p1,
- GNUNET_PEER_Id p2,
- MeshTreeCallback cb,
+tree_notify_connection_broken (struct MeshTunnelTree *t, GNUNET_PEER_Id p1,
+ GNUNET_PEER_Id p2, MeshTreeCallback cb,
void *cbcls)
{
struct MeshTunnelTreeNode *n;
struct MeshTunnelTreeNode *c;
- n = tree_find_peer(t, p1);
+ n = tree_find_peer (t, p1);
if (NULL == n)
return 0;
if (NULL != n->parent && n->parent->peer == p2)
{
- tree_mark_peers_disconnected(t, n, cb, cbcls);
- GNUNET_CONTAINER_DLL_remove(n->parent->children_head,
- n->parent->children_tail,
- n);
- GNUNET_CONTAINER_DLL_insert(t->disconnected_head,
- t->disconnected_tail,
- n);
+ tree_mark_peers_disconnected (t, n, cb, cbcls);
+ GNUNET_CONTAINER_DLL_remove (n->parent->children_head,
+ n->parent->children_tail, n);
+ GNUNET_CONTAINER_DLL_insert (t->disconnected_head, t->disconnected_tail, n);
return p1;
}
for (c = n->children_head; NULL != c; c = c->next)
{
if (c->peer == p2)
{
- tree_mark_peers_disconnected(t, c, cb, cbcls);
- GNUNET_CONTAINER_DLL_remove(n->children_head,
- n->children_tail,
- c);
- GNUNET_CONTAINER_DLL_insert(t->disconnected_head,
- t->disconnected_tail,
- c);
+ tree_mark_peers_disconnected (t, c, cb, cbcls);
+ GNUNET_CONTAINER_DLL_remove (n->children_head, n->children_tail, c);
+ GNUNET_CONTAINER_DLL_insert (t->disconnected_head, t->disconnected_tail,
+ c);
return p2;
}
}
* @return GNUNET_OK or GNUNET_SYSERR
*/
int
-tree_del_peer (struct MeshTunnelTree *t,
- GNUNET_PEER_Id peer,
- MeshTreeCallback cb,
- void *cbcls)
+tree_del_peer (struct MeshTunnelTree *t, GNUNET_PEER_Id peer,
+ MeshTreeCallback cb, void *cbcls)
{
struct MeshTunnelTreeNode *n;
- n = tree_del_path(t, peer, cb, cbcls);
+ n = tree_del_path (t, peer, cb, cbcls);
if (NULL == n)
{
GNUNET_break (0);
return GNUNET_YES;
}
GNUNET_break_op (NULL == n->children_head);
- tree_node_destroy(n);
+ tree_node_destroy (n);
if (NULL == t->root->children_head && t->me != t->root)
{
tree_node_destroy (t->root);
}
+
+/**
+ * Get the cost of the path relative to the already built tunnel tree.
+ *
+ * @param t The tunnel tree to which compare.
+ * @param path The individual path to reach a peer. It has to start at the
+ * root of the tree to be comparable.
+ *
+ * @return Number of hops to reach destination, UINT_MAX in case the peer is not
+ * in the path.
+ *
+ * TODO: adapt to allow any start / root combination
+ * TODO: take in account state of the nodes
+ */
+unsigned int
+tree_get_path_cost (struct MeshTunnelTree *t, struct MeshPeerPath *path)
+{
+ struct MeshTunnelTreeNode *n;
+ struct MeshTunnelTreeNode *p;
+ unsigned int i;
+ unsigned int l;
+
+ l = path_get_length (path);
+ p = t->root;
+ if (t->root->peer != path->peers[0])
+ {
+ GNUNET_break (0);
+ return UINT_MAX;
+ }
+ for (i = 1; i < l; i++)
+ {
+ for (n = p->children_head; NULL != n; n = n->next)
+ {
+ if (path->peers[i] == n->peer)
+ {
+ break;
+ }
+ }
+ if (NULL == n)
+ return l - i;
+ p = n;
+ }
+ return l - i;
+}
+
+
/**
* Print the tree on stderr
*
* @param t The tree
*/
void
-tree_debug(struct MeshTunnelTree *t)
+tree_debug (struct MeshTunnelTree *t)
{
- tree_node_debug(t->root, 0);
+ tree_node_debug (t->root, 0);
}
static int
iterate_free (void *cls, const GNUNET_HashCode * key, void *value)
{
- GNUNET_free(value);
+ GNUNET_free (value);
return GNUNET_YES;
}
/**
* Destroy the whole tree and free all used memory and Peer_Ids
- *
+ *
* @param t Tree to be destroyed
*/
void
#if MESH_TREE_DEBUG
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "tree: Destroying tree\n");
#endif
- tree_node_destroy(t->root);
- GNUNET_CONTAINER_multihashmap_iterate(t->first_hops, &iterate_free, NULL);
- GNUNET_CONTAINER_multihashmap_destroy(t->first_hops);
- GNUNET_free(t);
+ tree_node_destroy (t->root);
+ GNUNET_CONTAINER_multihashmap_iterate (t->first_hops, &iterate_free, NULL);
+ GNUNET_CONTAINER_multihashmap_destroy (t->first_hops);
+ GNUNET_free (t);
}
projects / oweals / gnunet.git / blobdiff