Add API functions to query nodes by device class.

[meshlink] / src / meshlink.c

diff --git a/src/meshlink.c b/src/meshlink.c
index 520176232d6f05beb68fa2eeb11caa60116e9b61..815acdeadd60f40e6e8691a2f5e779a849e5f9e2 100644 (file)
--- a/src/meshlink.c
+++ b/src/meshlink.c
@@ -1847,6 +1847,68 @@ meshlink_node_t **meshlink_get_all_nodes(meshlink_handle_t *mesh, meshlink_node_
        return result;
 }
 
+meshlink_node_t **meshlink_get_all_nodes_by_dev_class(meshlink_handle_t *mesh, dev_class_t devclass, meshlink_node_t **nodes, size_t *nmemb) {
+       if(!mesh || ((int)devclass < 0) || (devclass > _DEV_CLASS_MAX) || !nmemb) {
+               meshlink_errno = MESHLINK_EINVAL;
+               return NULL;
+       }
+
+       meshlink_node_t **result;
+
+       pthread_mutex_lock(&(mesh->mesh_mutex));
+
+       *nmemb = 0;
+
+       for splay_each(node_t, n, mesh->nodes) {
+               if(n->devclass == devclass) {
+                       *nmemb = *nmemb + 1;
+               }
+       }
+
+       if(*nmemb == 0) {
+               free(nodes);
+               pthread_mutex_unlock(&(mesh->mesh_mutex));
+               return NULL;
+       }
+
+       result = realloc(nodes, *nmemb * sizeof(*nodes));
+
+       if(result) {
+               meshlink_node_t **p = result;
+
+               for splay_each(node_t, n, mesh->nodes) {
+                       if(n->devclass == devclass) {
+                               *p++ = (meshlink_node_t *)n;
+                       }
+               }
+       } else {
+               *nmemb = 0;
+               free(nodes);
+               meshlink_errno = MESHLINK_ENOMEM;
+       }
+
+       pthread_mutex_unlock(&(mesh->mesh_mutex));
+
+       return result;
+}
+
+dev_class_t meshlink_get_node_dev_class(meshlink_handle_t *mesh, meshlink_node_t *node) {
+       if(!mesh || !node) {
+               meshlink_errno = MESHLINK_EINVAL;
+               return -1;
+       }
+
+       dev_class_t devclass;
+
+       pthread_mutex_lock(&(mesh->mesh_mutex));
+
+       devclass = ((node_t *)node)->devclass;
+
+       pthread_mutex_unlock(&(mesh->mesh_mutex));
+
+       return devclass;
+}
+
 bool meshlink_sign(meshlink_handle_t *mesh, const void *data, size_t len, void *signature, size_t *siglen) {
        if(!mesh || !data || !len || !signature || !siglen) {
                meshlink_errno = MESHLINK_EINVAL;