return true;
}
+static struct timeval idle(event_loop_t *loop, void *data) {
+ meshlink_handle_t *mesh = data;
+ int t, tmin = -1;
+ for splay_each(node_t, n, mesh->nodes) {
+ if(!n->utcp)
+ continue;
+ t = utcp_timeout(n->utcp);
+ if(t >= 0 && t < tmin)
+ tmin = t;
+ }
+ struct timeval tv = {.tv_sec = t};
+ return tv;
+}
+
static bool meshlink_setup(meshlink_handle_t *mesh) {
if(mkdir(mesh->confbase, 0777) && errno != EEXIST) {
logger(mesh, MESHLINK_DEBUG, "Could not create directory %s: %s\n", mesh->confbase, strerror(errno));
}
meshlink_handle_t *meshlink_open(const char *confbase, const char *name, const char* appname, dev_class_t devclass) {
- return meshlink_open_with_size(confbase, name, appname, devclass, sizeof(meshlink_handle_t));
-}
-
-meshlink_handle_t *meshlink_open_with_size(const char *confbase, const char *name, const char* appname, dev_class_t devclass, size_t size) {
-
// Validate arguments provided by the application
bool usingname = false;
return NULL;
}
- meshlink_handle_t *mesh = xzalloc(size);
+ meshlink_handle_t *mesh = xzalloc(sizeof(meshlink_handle_t));
mesh->confbase = xstrdup(confbase);
mesh->appname = xstrdup(appname);
mesh->devclass = devclass;
return NULL;
}
+ idle_set(&mesh->loop, idle, mesh);
+
logger(NULL, MESHLINK_DEBUG, "meshlink_open returning\n");
return mesh;
}
return;
}
+void meshlink_set_default_blacklist(meshlink_handle_t *mesh, bool blacklist) {
+ mesh->default_blacklist = blacklist;
+}
+
/* Hint that a hostname may be found at an address
* See header file for detailed comment.
*/
static bool channel_pre_accept(struct utcp *utcp, uint16_t port) {
//TODO: implement
- return false;
-}
-
-static void channel_accept(struct utcp_connection *utcp_connection, uint16_t port) {
- //TODO: implement
+ return true;
}
-static int channel_recv(struct utcp_connection *connection, const void *data, size_t len) {
+static ssize_t channel_recv(struct utcp_connection *connection, const void *data, size_t len) {
meshlink_channel_t *channel = connection->priv;
+ if(!channel)
+ abort();
node_t *n = channel->node;
meshlink_handle_t *mesh = n->mesh;
if(!channel->receive_cb)
return -1;
else {
channel->receive_cb(mesh, channel, data, len);
- return 0;
+ return len;
}
}
-static int channel_send(struct utcp *utcp, const void *data, size_t len) {
- node_t *n = utcp->priv;
+static void channel_accept(struct utcp_connection *utcp_connection, uint16_t port) {
+ node_t *n = utcp_connection->utcp->priv;
+ if(!n)
+ abort();
meshlink_handle_t *mesh = n->mesh;
- return meshlink_send(mesh, (meshlink_node_t *)n, data, len) ? len : -1;
+ if(!mesh->channel_accept_cb)
+ return;
+ meshlink_channel_t *channel = xzalloc(sizeof *channel);
+ channel->node = n;
+ channel->c = utcp_connection;
+ if(mesh->channel_accept_cb(mesh, channel, port, NULL, 0))
+ utcp_accept(utcp_connection, channel_recv, channel);
+ else
+ free(channel);
}
-void meshlink_set_channel_accept_cb(meshlink_handle_t *mesh, meshlink_channel_accept_cb_t cb) {
- mesh->channel_accept_cb = cb;
+static ssize_t channel_send(struct utcp *utcp, const void *data, size_t len) {
+ node_t *n = utcp->priv;
+ meshlink_handle_t *mesh = n->mesh;
+ char hex[len * 2 + 1];
+ bin2hex(data, hex, len);
+ logger(mesh, MESHLINK_WARNING, "channel_send(%p, %p, %zu): %s\n", utcp, data, len, hex);
+ return meshlink_send(mesh, (meshlink_node_t *)n, data, len) ? len : -1;
}
void meshlink_set_channel_receive_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, meshlink_channel_receive_cb_t cb) {
+ if(!mesh || !channel) {
+ meshlink_errno = MESHLINK_EINVAL;
+ return;
+ }
+
channel->receive_cb = cb;
}
+static void channel_receive(meshlink_handle_t *mesh, meshlink_node_t *source, const void *data, size_t len) {
+ node_t *n = (node_t *)source;
+ if(!n->utcp)
+ abort();
+ char hex[len * 2 + 1];
+ bin2hex(data, hex, len);
+ logger(mesh, MESHLINK_WARNING, "channel_receive(%p, %p, %zu): %s\n", n->utcp, data, len, hex);
+ utcp_recv(n->utcp, data, len);
+}
+
+static void channel_poll(struct utcp_connection *connection, size_t len) {
+ meshlink_channel_t *channel = connection->priv;
+ if(!channel)
+ abort();
+ node_t *n = channel->node;
+ meshlink_handle_t *mesh = n->mesh;
+ if(channel->poll_cb)
+ channel->poll_cb(mesh, channel, len);
+}
+
+void meshlink_set_channel_poll_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, meshlink_channel_poll_cb_t cb) {
+ channel->poll_cb = cb;
+ utcp_set_poll_cb(channel->c, cb ? channel_poll : NULL);
+}
+
+void meshlink_set_channel_accept_cb(meshlink_handle_t *mesh, meshlink_channel_accept_cb_t cb) {
+ if(!mesh) {
+ meshlink_errno = MESHLINK_EINVAL;
+ return;
+ }
+
+ pthread_mutex_lock(&mesh->mesh_mutex);
+ mesh->channel_accept_cb = cb;
+ mesh->receive_cb = channel_receive;
+ for splay_each(node_t, n, mesh->nodes) {
+ if(!n->utcp && n != mesh->self) {
+ logger(mesh, MESHLINK_WARNING, "utcp_init on node %s", n->name);
+ n->utcp = utcp_init(channel_accept, channel_pre_accept, channel_send, n);
+ }
+ }
+ pthread_mutex_unlock(&mesh->mesh_mutex);
+}
+
meshlink_channel_t *meshlink_channel_open(meshlink_handle_t *mesh, meshlink_node_t *node, uint16_t port, meshlink_channel_receive_cb_t cb, const void *data, size_t len) {
+ if(!mesh || !node) {
+ meshlink_errno = MESHLINK_EINVAL;
+ return NULL;
+ }
+
+ logger(mesh, MESHLINK_WARNING, "meshlink_channel_open(%p, %s, %u, %p, %p, %zu)\n", mesh, node->name, port, cb, data, len);
node_t *n = (node_t *)node;
if(!n->utcp) {
n->utcp = utcp_init(channel_accept, channel_pre_accept, channel_send, n);
- if(!n->utcp)
+ mesh->receive_cb = channel_receive;
+ if(!n->utcp) {
+ meshlink_errno = errno == ENOMEM ? MESHLINK_ENOMEM : MESHLINK_EINTERNAL;
return NULL;
+ }
}
meshlink_channel_t *channel = xzalloc(sizeof *channel);
channel->node = n;
channel->receive_cb = cb;
channel->c = utcp_connect(n->utcp, port, channel_recv, channel);
if(!channel->c) {
+ meshlink_errno = errno == ENOMEM ? MESHLINK_ENOMEM : MESHLINK_EINTERNAL;
free(channel);
return NULL;
}
}
void meshlink_channel_shutdown(meshlink_handle_t *mesh, meshlink_channel_t *channel, int direction) {
+ if(!mesh || !channel) {
+ meshlink_errno = MESHLINK_EINVAL;
+ return;
+ }
+
utcp_shutdown(channel->c, direction);
}
void meshlink_channel_close(meshlink_handle_t *mesh, meshlink_channel_t *channel) {
+ if(!mesh || !channel) {
+ meshlink_errno = MESHLINK_EINVAL;
+ return;
+ }
+
utcp_close(channel->c);
free(channel);
}
ssize_t meshlink_channel_send(meshlink_handle_t *mesh, meshlink_channel_t *channel, const void *data, size_t len) {
- // TODO: locking.
+ if(!mesh || !channel) {
+ meshlink_errno = MESHLINK_EINVAL;
+ return -1;
+ }
+
+ if(!len)
+ return 0;
+
+ if(!data) {
+ meshlink_errno = MESHLINK_EINVAL;
+ return -1;
+ }
+
+ // TODO: more finegrained locking.
// Ideally we want to put the data into the UTCP connection's send buffer.
// Then, preferrably only if there is room in the receiver window,
// kick the meshlink thread to go send packets.
- return utcp_send(channel->c, data, len);
+
+ pthread_mutex_lock(&mesh->mesh_mutex);
+ ssize_t retval = utcp_send(channel->c, data, len);
+ pthread_mutex_unlock(&mesh->mesh_mutex);
+
+ if(retval < 0)
+ meshlink_errno = MESHLINK_ENETWORK;
+ return retval;
+}
+
+void update_node_status(meshlink_handle_t *mesh, node_t *n) {
+ if(n->status.reachable && mesh->channel_accept_cb && !n->utcp)
+ n->utcp = utcp_init(channel_accept, channel_pre_accept, channel_send, n);
+ if(mesh->node_status_cb)
+ mesh->node_status_cb(mesh, (meshlink_node_t *)n, n->status.reachable);
}
static void __attribute__((constructor)) meshlink_init(void) {
crypto_exit();
}
-
/// Device class traits
dev_class_traits_t dev_class_traits[_DEV_CLASS_MAX +1] = {
{ .min_connects = 3, .max_connects = 10000, .edge_weight = 1 }, // DEV_CLASS_BACKBONE
projects / meshlink / blobdiff