]> git.meshlink.io Git - meshlink/blobdiff - src/devtools.c
Avoid allocating packet buffers unnecessarily.
[meshlink] / src / devtools.c
index c1578e65532eceb6d2e5f8c543c24719b9797507..5a49e3a860296a66ad049bd7d238946424ef1b2d 100644 (file)
 #include "logger.h"
 #include "meshlink_internal.h"
 #include "node.h"
+#include "submesh.h"
 #include "splay_tree.h"
 #include "netutl.h"
 #include "xalloc.h"
 
 #include "devtools.h"
 
+static void trybind_nop_probe(void) {
+       return;
+}
+
+static void keyrotate_nop_probe(int stage) {
+       (void)stage;
+       return;
+}
+
+static void inviter_commits_first_nop_probe(bool stage) {
+       (void)stage;
+       return;
+}
+
+void (*devtool_trybind_probe)(void) = trybind_nop_probe;
+void (*devtool_keyrotate_probe)(int stage) = keyrotate_nop_probe;
+void (*devtool_set_inviter_commits_first)(bool inviter_commited_first) = inviter_commits_first_nop_probe;
+
 /* Return an array of edges in the current network graph.
  * Data captures the current state and will not be updated.
  * Caller must deallocate data when done.
@@ -39,38 +58,40 @@ devtool_edge_t *devtool_get_all_edges(meshlink_handle_t *mesh, devtool_edge_t *e
                return NULL;
        }
 
-       pthread_mutex_lock(&(mesh->mesh_mutex));
+       pthread_mutex_lock(&mesh->mutex);
 
        devtool_edge_t *result = NULL;
-       int result_size = 0;
+       unsigned int result_size = 0;
 
        result_size = mesh->edges->count / 2;
 
        // if result is smaller than edges, we have to dealloc all the excess devtool_edge_t
-       if(result_size > *nmemb)
-               result = realloc(edges, result_size * sizeof(*result));
-       else
+       if((size_t)result_size > *nmemb) {
+               result = xrealloc(edges, result_size * sizeof(*result));
+       } else {
                result = edges;
+       }
 
        if(result) {
                devtool_edge_t *p = result;
-               int n = 0;
+               unsigned int n = 0;
 
                for splay_each(edge_t, e, mesh->edges) {
                        // skip edges that do not represent a two-directional connection
-                       if((!e->reverse) || (e->reverse->to != e->from))
+                       if(!e->reverse || e->reverse->to != e->from) {
                                continue;
+                       }
 
                        // don't count edges twice
-                       if(e->to < e->from)
+                       if(e->to < e->from) {
                                continue;
+                       }
 
                        assert(n < result_size);
 
                        p->from = (meshlink_node_t *)e->from;
                        p->to = (meshlink_node_t *)e->to;
                        p->address = e->address.storage;
-                       p->options = e->options;
                        p->weight = e->weight;
 
                        n++;
@@ -78,40 +99,36 @@ devtool_edge_t *devtool_get_all_edges(meshlink_handle_t *mesh, devtool_edge_t *e
                }
 
                // shrink result to the actual amount of memory used
-               result = realloc(result, n * sizeof(*result));
+               result = xrealloc(result, n * sizeof(*result));
                *nmemb = n;
        } else {
                *nmemb = 0;
                meshlink_errno = MESHLINK_ENOMEM;
        }
 
-       pthread_mutex_unlock(&(mesh->mesh_mutex));
+       pthread_mutex_unlock(&mesh->mutex);
 
        return result;
 }
 
 static bool fstrwrite(const char *str, FILE *stream) {
+       assert(stream);
+
        size_t len = strlen(str);
 
-       if(fwrite((void *)str, 1, len, stream) != len)
+       if(fwrite((void *)str, 1, len, stream) != len) {
                return false;
+       }
 
        return true;
 }
 
-static const char *__itoa(int value) {
-       static char buffer[sizeof(int) * 8 + 1];        // not thread safe
-
-       if(snprintf(buffer, sizeof(buffer), "%d", value) == -1)
-               return "";
-
-       return buffer;
-}
-
 bool devtool_export_json_all_edges_state(meshlink_handle_t *mesh, FILE *stream) {
+       assert(stream);
+
        bool result = true;
 
-       pthread_mutex_lock(&(mesh->mesh_mutex));
+       pthread_mutex_lock(&mesh->mutex);
 
        // export edges and nodes
        size_t node_count = 0;
@@ -120,57 +137,71 @@ bool devtool_export_json_all_edges_state(meshlink_handle_t *mesh, FILE *stream)
        meshlink_node_t **nodes = meshlink_get_all_nodes(mesh, NULL, &node_count);
        devtool_edge_t *edges = devtool_get_all_edges(mesh, NULL, &edge_count);
 
-       if((!nodes && node_count != 0) || (!edges && edge_count != 0))
+       if((!nodes && node_count != 0) || (!edges && edge_count != 0)) {
                goto fail;
+       }
 
        // export begin
-       if(!fstrwrite("{\n", stream))
+       if(!fstrwrite("{\n", stream)) {
                goto fail;
+       }
 
        // export nodes
-       if(!fstrwrite("\t\"nodes\": {\n", stream))
+       if(!fstrwrite("\t\"nodes\": {\n", stream)) {
                goto fail;
+       }
+
+       char buf[16];
 
        for(size_t i = 0; i < node_count; ++i) {
-               if(!fstrwrite("\t\t\"", stream) || !fstrwrite(((node_t *)nodes[i])->name, stream) || !fstrwrite("\": {\n", stream))
+               if(!fstrwrite("\t\t\"", stream) || !fstrwrite(((node_t *)nodes[i])->name, stream) || !fstrwrite("\": {\n", stream)) {
                        goto fail;
+               }
 
-               if(!fstrwrite("\t\t\t\"name\": \"", stream) || !fstrwrite(((node_t *)nodes[i])->name, stream) || !fstrwrite("\",\n", stream))
+               if(!fstrwrite("\t\t\t\"name\": \"", stream) || !fstrwrite(((node_t *)nodes[i])->name, stream) || !fstrwrite("\",\n", stream)) {
                        goto fail;
+               }
 
-               if(!fstrwrite("\t\t\t\"options\": ", stream) || !fstrwrite(__itoa(((node_t *)nodes[i])->options), stream) || !fstrwrite(",\n", stream))
-                       goto fail;
+               snprintf(buf, sizeof(buf), "%d", ((node_t *)nodes[i])->devclass);
 
-               if(!fstrwrite("\t\t\t\"devclass\": ", stream) || !fstrwrite(__itoa(((node_t *)nodes[i])->devclass), stream) || !fstrwrite("\n", stream))
+               if(!fstrwrite("\t\t\t\"devclass\": ", stream) || !fstrwrite(buf, stream) || !fstrwrite("\n", stream)) {
                        goto fail;
+               }
 
-               if(!fstrwrite((i + 1) != node_count ? "\t\t},\n" : "\t\t}\n", stream))
+               if(!fstrwrite((i + 1) != node_count ? "\t\t},\n" : "\t\t}\n", stream)) {
                        goto fail;
+               }
        }
 
-       if(!fstrwrite("\t},\n", stream))
+       if(!fstrwrite("\t},\n", stream)) {
                goto fail;
+       }
 
        // export edges
 
-       if(!fstrwrite("\t\"edges\": {\n", stream))
+       if(!fstrwrite("\t\"edges\": {\n", stream)) {
                goto fail;
+       }
 
        for(size_t i = 0; i < edge_count; ++i) {
-               if(!fstrwrite("\t\t\"", stream) || !fstrwrite(edges[i].from->name, stream) || !fstrwrite("_to_", stream) || !fstrwrite(edges[i].to->name, stream) || !fstrwrite("\": {\n", stream))
+               if(!fstrwrite("\t\t\"", stream) || !fstrwrite(edges[i].from->name, stream) || !fstrwrite("_to_", stream) || !fstrwrite(edges[i].to->name, stream) || !fstrwrite("\": {\n", stream)) {
                        goto fail;
+               }
 
-               if(!fstrwrite("\t\t\t\"from\": \"", stream) || !fstrwrite(edges[i].from->name, stream) || !fstrwrite("\",\n", stream))
+               if(!fstrwrite("\t\t\t\"from\": \"", stream) || !fstrwrite(edges[i].from->name, stream) || !fstrwrite("\",\n", stream)) {
                        goto fail;
+               }
 
-               if(!fstrwrite("\t\t\t\"to\": \"", stream) || !fstrwrite(edges[i].to->name, stream) || !fstrwrite("\",\n", stream))
+               if(!fstrwrite("\t\t\t\"to\": \"", stream) || !fstrwrite(edges[i].to->name, stream) || !fstrwrite("\",\n", stream)) {
                        goto fail;
+               }
 
                char *host = NULL, *port = NULL, *address = NULL;
-               sockaddr2str((const sockaddr_t *) & (edges[i].address), &host, &port);
+               sockaddr2str((const sockaddr_t *)&edges[i].address, &host, &port);
 
-               if(host && port)
+               if(host && port) {
                        xasprintf(&address, "{ \"host\": \"%s\", \"port\": %s }", host, port);
+               }
 
                free(host);
                free(port);
@@ -182,23 +213,26 @@ bool devtool_export_json_all_edges_state(meshlink_handle_t *mesh, FILE *stream)
 
                free(address);
 
-               if(!fstrwrite("\t\t\t\"options\": ", stream) || !fstrwrite(__itoa(edges[i].options), stream) || !fstrwrite(",\n", stream))
-                       goto fail;
+               snprintf(buf, sizeof(buf), "%d", edges[i].weight);
 
-               if(!fstrwrite("\t\t\t\"weight\": ", stream) || !fstrwrite(__itoa(edges[i].weight), stream) || !fstrwrite("\n", stream))
+               if(!fstrwrite("\t\t\t\"weight\": ", stream) || !fstrwrite(buf, stream) || !fstrwrite("\n", stream)) {
                        goto fail;
+               }
 
-               if(!fstrwrite((i + 1) != edge_count ? "\t\t},\n" : "\t\t}\n", stream))
+               if(!fstrwrite((i + 1) != edge_count ? "\t\t},\n" : "\t\t}\n", stream)) {
                        goto fail;
+               }
        }
 
-       if(!fstrwrite("\t}\n", stream))
+       if(!fstrwrite("\t}\n", stream)) {
                goto fail;
+       }
 
        // DONE!
 
-       if(!fstrwrite("}", stream))
+       if(!fstrwrite("}", stream)) {
                goto fail;
+       }
 
        goto done;
 
@@ -209,7 +243,96 @@ done:
        free(nodes);
        free(edges);
 
-       pthread_mutex_unlock(&(mesh->mesh_mutex));
+       pthread_mutex_unlock(&mesh->mutex);
 
        return result;
 }
+
+void devtool_get_node_status(meshlink_handle_t *mesh, meshlink_node_t *node, devtool_node_status_t *status) {
+       if(!mesh || !node || !status) {
+               meshlink_errno = MESHLINK_EINVAL;
+               return;
+       }
+
+       node_t *internal = (node_t *)node;
+
+       pthread_mutex_lock(&mesh->mutex);
+
+       memcpy(&status->status, &internal->status, sizeof status->status);
+       memcpy(&status->address, &internal->address, sizeof status->address);
+       status->mtu = internal->mtu;
+       status->minmtu = internal->minmtu;
+       status->maxmtu = internal->maxmtu;
+       status->mtuprobes = internal->mtuprobes;
+       status->in_packets = internal->in_packets;
+       status->in_bytes = internal->in_bytes;
+       status->out_packets = internal->out_packets;
+       status->out_bytes = internal->out_bytes;
+
+       // Derive UDP connection status
+       if(internal == mesh->self) {
+               status->udp_status = DEVTOOL_UDP_WORKING;
+       } else if(!internal->status.reachable) {
+               status->udp_status = DEVTOOL_UDP_IMPOSSIBLE;
+       } else if(!internal->status.validkey) {
+               status->udp_status = DEVTOOL_UDP_UNKNOWN;
+       } else if(internal->status.udp_confirmed) {
+               status->udp_status = DEVTOOL_UDP_WORKING;
+       } else if(internal->mtuprobes > 30) {
+               status->udp_status = DEVTOOL_UDP_FAILED;
+       } else if(internal->mtuprobes > 0) {
+               status->udp_status = DEVTOOL_UDP_TRYING;
+       } else {
+               status->udp_status = DEVTOOL_UDP_UNKNOWN;
+       }
+
+       pthread_mutex_unlock(&mesh->mutex);
+}
+
+meshlink_submesh_t **devtool_get_all_submeshes(meshlink_handle_t *mesh, meshlink_submesh_t **submeshes, size_t *nmemb) {
+       if(!mesh || !nmemb || (*nmemb && !submeshes)) {
+               meshlink_errno = MESHLINK_EINVAL;
+               return NULL;
+       }
+
+       meshlink_submesh_t **result;
+
+       //lock mesh->nodes
+       pthread_mutex_lock(&mesh->mutex);
+
+       *nmemb = mesh->submeshes->count;
+       result = realloc(submeshes, *nmemb * sizeof(*submeshes));
+
+       if(result) {
+               meshlink_submesh_t **p = result;
+
+               for list_each(submesh_t, s, mesh->submeshes) {
+                       *p++ = (meshlink_submesh_t *)s;
+               }
+       } else {
+               *nmemb = 0;
+               free(submeshes);
+               meshlink_errno = MESHLINK_ENOMEM;
+       }
+
+       pthread_mutex_unlock(&mesh->mutex);
+
+       return result;
+}
+
+meshlink_handle_t *devtool_open_in_netns(const char *confbase, const char *name, const char *appname, dev_class_t devclass, int netns) {
+       meshlink_open_params_t *params = meshlink_open_params_init(confbase, name, appname, devclass);
+       params->netns = dup(netns);
+       meshlink_handle_t *handle;
+
+       if(params->netns == -1) {
+               handle = NULL;
+               meshlink_errno = MESHLINK_EINVAL;
+       } else {
+               handle = meshlink_open_ex(params);
+       }
+
+       meshlink_open_params_free(params);
+
+       return handle;
+}