/*
net_setup.c -- Setup.
- Copyright (C) 2014 Guus Sliepen <guus@meshlink.io>
+ Copyright (C) 2014-2017 Guus Sliepen <guus@meshlink.io>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#include "route.h"
#include "utils.h"
#include "xalloc.h"
-
-int autoconnect = 3;
+#include "submesh.h"
bool node_read_ecdsa_public_key(meshlink_handle_t *mesh, node_t *n) {
- if(ecdsa_active(n->ecdsa))
+ if(ecdsa_active(n->ecdsa)) {
return true;
+ }
splay_tree_t *config_tree;
char *p;
init_configuration(&config_tree);
- if(!read_host_config(mesh, config_tree, n->name))
+
+ if(!read_host_config(mesh, config_tree, n->name)) {
goto exit;
+ }
/* First, check for simple ECDSAPublicKey statement */
}
bool read_ecdsa_public_key(meshlink_handle_t *mesh, connection_t *c) {
- if(ecdsa_active(c->ecdsa))
+ if(ecdsa_active(c->ecdsa)) {
return true;
+ }
char *p;
if(!c->config_tree) {
init_configuration(&c->config_tree);
- if(!read_host_config(mesh, c->config_tree, c->name))
+
+ if(!read_host_config(mesh, c->config_tree, c->name)) {
return false;
+ }
}
/* First, check for simple ECDSAPublicKey statement */
return false;
}
-static bool read_ecdsa_private_key(meshlink_handle_t *mesh) {
+bool read_ecdsa_private_key(meshlink_handle_t *mesh) {
FILE *fp;
char filename[PATH_MAX];
- snprintf(filename,PATH_MAX, "%s" SLASH "ecdsa_key.priv", mesh->confbase);
- fp = fopen(filename, "r");
+ snprintf(filename, PATH_MAX, "%s" SLASH "ecdsa_key.priv", mesh->confbase);
+ fp = fopen(filename, "rb");
if(!fp) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Error reading ECDSA private key file: %s", strerror(errno));
+ logger(mesh, MESHLINK_ERROR, "Error reading ECDSA private key file: %s", strerror(errno));
return false;
}
mesh->self->connection->ecdsa = ecdsa_read_pem_private_key(fp);
fclose(fp);
- if(!mesh->self->connection->ecdsa)
- logger(DEBUG_ALWAYS, LOG_ERR, "Reading ECDSA private key file failed: %s", strerror(errno));
+ if(!mesh->self->connection->ecdsa) {
+ logger(mesh, MESHLINK_ERROR, "Reading ECDSA private key file failed: %s", strerror(errno));
+ }
return mesh->self->connection->ecdsa;
}
mesh->invitation_key = NULL;
}
- snprintf(filename,PATH_MAX, "%s" SLASH "invitations" SLASH "ecdsa_key.priv", mesh->confbase);
+ snprintf(filename, PATH_MAX, "%s" SLASH "invitations" SLASH "ecdsa_key.priv", mesh->confbase);
- fp = fopen(filename, "r");
+ fp = fopen(filename, "rb");
if(fp) {
mesh->invitation_key = ecdsa_read_pem_private_key(fp);
fclose(fp);
- if(!mesh->invitation_key)
- logger(DEBUG_ALWAYS, LOG_ERR, "Reading ECDSA private key file `%s' failed: %s", filename, strerror(errno));
+
+ if(!mesh->invitation_key) {
+ logger(mesh, MESHLINK_ERROR, "Reading ECDSA private key file `%s' failed: %s", filename, strerror(errno));
+ }
}
return mesh->invitation_key;
}
-static void load_all_nodes(meshlink_handle_t *mesh) {
+bool node_read_devclass(meshlink_handle_t *mesh, node_t *n) {
+
+ splay_tree_t *config_tree;
+ char *p;
+
+ init_configuration(&config_tree);
+
+ if(!read_host_config(mesh, config_tree, n->name)) {
+ goto exit;
+ }
+
+ if(get_config_string(lookup_config(config_tree, "DeviceClass"), &p)) {
+ n->devclass = atoi(p);
+ free(p);
+ }
+
+ if((int)n->devclass < 0 || n->devclass > _DEV_CLASS_MAX) {
+ n->devclass = _DEV_CLASS_MAX;
+ }
+
+exit:
+ exit_configuration(&config_tree);
+ return n->devclass != 0;
+}
+
+bool node_read_submesh(meshlink_handle_t *mesh, node_t *n) {
+
+ splay_tree_t *config_tree;
+ char *p;
+
+ init_configuration(&config_tree);
+
+ if(!read_host_config(mesh, config_tree, n->name)) {
+ goto exit;
+ }
+
+ if(get_config_string(lookup_config(config_tree, "SubMesh"), &p)) {
+ n->submesh = NULL;
+
+ for list_each(submesh_t, s, mesh->submeshes) {
+ if(!strcmp(p, s->name)) {
+ n->submesh = s;
+ break;
+ }
+ }
+
+ if(!n->submesh) {
+ n->submesh = (submesh_t *)meshlink_submesh_open(mesh, p);
+ }
+
+ free(p);
+ }
+
+exit:
+ exit_configuration(&config_tree);
+ return n->submesh != NULL;
+}
+
+bool node_write_devclass(meshlink_handle_t *mesh, node_t *n) {
+
+ if((int)n->devclass < 0 || n->devclass > _DEV_CLASS_MAX) {
+ return false;
+ }
+
+ bool result = false;
+
+ splay_tree_t *config_tree;
+ init_configuration(&config_tree);
+
+ // ignore read errors; in case the file does not exist we will create it
+ read_host_config(mesh, config_tree, n->name);
+
+ config_t *cnf = lookup_config(config_tree, "DeviceClass");
+
+ if(!cnf) {
+ cnf = new_config();
+ cnf->variable = xstrdup("DeviceClass");
+ config_add(config_tree, cnf);
+ }
+
+ set_config_int(cnf, n->devclass);
+
+ if(!write_host_config(mesh, config_tree, n->name)) {
+ goto fail;
+ }
+
+ result = true;
+
+fail:
+ exit_configuration(&config_tree);
+ return result;
+}
+
+bool node_write_submesh(meshlink_handle_t *mesh, node_t *n) {
+
+ if(!n->submesh) {
+ return false;
+ }
+
+ bool result = false;
+
+ splay_tree_t *config_tree;
+ init_configuration(&config_tree);
+
+ // ignore read errors; in case the file does not exist we will create it
+ read_host_config(mesh, config_tree, n->name);
+
+ config_t *cnf = lookup_config(config_tree, "SubMesh");
+
+ if(!cnf) {
+ cnf = new_config();
+ cnf->variable = xstrdup("SubMesh");
+ config_add(config_tree, cnf);
+ }
+
+ set_config_string(cnf, n->submesh->name);
+
+ if(!write_host_config(mesh, config_tree, n->name)) {
+ goto fail;
+ }
+
+ result = true;
+
+fail:
+ exit_configuration(&config_tree);
+ return result;
+}
+
+void load_all_nodes(meshlink_handle_t *mesh) {
DIR *dir;
struct dirent *ent;
char dname[PATH_MAX];
- snprintf(dname,PATH_MAX, "%s" SLASH "hosts", mesh->confbase);
+ snprintf(dname, PATH_MAX, "%s" SLASH "hosts", mesh->confbase);
dir = opendir(dname);
+
if(!dir) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Could not open %s: %s", dname, strerror(errno));
+ logger(mesh, MESHLINK_ERROR, "Could not open %s: %s", dname, strerror(errno));
return;
}
while((ent = readdir(dir))) {
- if(!check_id(ent->d_name))
+ if(!check_id(ent->d_name)) {
continue;
+ }
+
+ node_t *n = lookup_node(mesh, ent->d_name);
+
+ if(n) {
+ if(n == mesh->self && !n->submesh) {
+ node_read_submesh(mesh, n);
+ }
- node_t *n = lookup_node(ent->d_name);
- if(n)
continue;
+ }
n = new_node();
n->name = xstrdup(ent->d_name);
- node_add(n);
+ node_read_devclass(mesh, n);
+ node_read_submesh(mesh, n);
+ node_add(mesh, n);
}
closedir(dir);
get_config_string(lookup_config(mesh->config, "Name"), &name);
- if(!name)
+ if(!name) {
return NULL;
+ }
if(!check_id(name)) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Invalid name for mesh->self!");
+ logger(mesh, MESHLINK_ERROR, "Invalid name for mesh->self!");
free(name);
return NULL;
}
mesh->localdiscovery = true;
keylifetime = 3600; // TODO: check if this can be removed as well
mesh->maxtimeout = 900;
- autoconnect = 3;
mesh->self->options |= OPTION_PMTU_DISCOVERY;
read_invitation_key(mesh);
if(address) {
char *space = strchr(address, ' ');
+
if(space) {
*space++ = 0;
port = space;
}
- if(!strcmp(address, "*"))
+ if(!strcmp(address, "*")) {
*address = 0;
+ }
}
- struct addrinfo *ai, hint = {0};
- hint.ai_family = addressfamily;
- hint.ai_socktype = SOCK_STREAM;
- hint.ai_protocol = IPPROTO_TCP;
- hint.ai_flags = AI_PASSIVE;
+ struct addrinfo *ai;
+
+ struct addrinfo hint = {
+ .ai_family = addressfamily,
+ .ai_socktype = SOCK_STREAM,
+ .ai_protocol = IPPROTO_TCP,
+ .ai_flags = AI_PASSIVE,
+ };
int err = getaddrinfo(address && *address ? address : NULL, port, &hint, &ai);
+
free(address);
if(err || !ai) {
- logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "getaddrinfo", err == EAI_SYSTEM ? strerror(err) : gai_strerror(err));
+ logger(mesh, MESHLINK_ERROR, "System call `%s' failed: %s", "getaddrinfo", err == EAI_SYSTEM ? strerror(err) : gai_strerror(err));
return false;
}
+ bool success = false;
+
for(struct addrinfo *aip = ai; aip; aip = aip->ai_next) {
// Ignore duplicate addresses
bool found = false;
break;
}
- if(found)
+ if(found) {
continue;
+ }
if(mesh->listen_sockets >= MAXSOCKETS) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Too many listening sockets");
+ logger(mesh, MESHLINK_ERROR, "Too many listening sockets");
return false;
}
int tcp_fd = setup_listen_socket((sockaddr_t *) aip->ai_addr);
- if(tcp_fd < 0)
+ if(tcp_fd < 0) {
continue;
+ }
int udp_fd = setup_vpn_in_socket(mesh, (sockaddr_t *) aip->ai_addr);
- if(tcp_fd < 0) {
+ if(udp_fd < 0) {
close(tcp_fd);
continue;
}
io_add(&mesh->loop, &mesh->listen_socket[mesh->listen_sockets].tcp, handle_new_meta_connection, &mesh->listen_socket[mesh->listen_sockets], tcp_fd, IO_READ);
io_add(&mesh->loop, &mesh->listen_socket[mesh->listen_sockets].udp, handle_incoming_vpn_data, &mesh->listen_socket[mesh->listen_sockets], udp_fd, IO_READ);
- if(mesh->debug_level >= DEBUG_CONNECTIONS) {
+ if(mesh->log_level >= MESHLINK_INFO) {
char *hostname = sockaddr2hostname((sockaddr_t *) aip->ai_addr);
- logger(DEBUG_CONNECTIONS, LOG_NOTICE, "Listening on %s", hostname);
+ logger(mesh, MESHLINK_INFO, "Listening on %s", hostname);
free(hostname);
}
mesh->listen_socket[mesh->listen_sockets].bindto = bindto;
memcpy(&mesh->listen_socket[mesh->listen_sockets].sa, aip->ai_addr, aip->ai_addrlen);
mesh->listen_sockets++;
+ success = true;
}
freeaddrinfo(ai);
- return true;
+ return success;
}
/*
Configure node_t mesh->self and set up the local sockets (listen only)
*/
bool setup_myself(meshlink_handle_t *mesh) {
- char *name, *hostname, *cipher, *digest, *type;
+ char *name;
char *address = NULL;
- bool port_specified = false;
if(!(name = get_name(mesh))) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Name for tinc daemon required!");
+ logger(mesh, MESHLINK_ERROR, "Name for MeshLink instance required!");
return false;
}
mesh->self = new_node();
mesh->self->connection = new_connection();
mesh->self->name = name;
+ mesh->self->devclass = mesh->devclass;
mesh->self->connection->name = xstrdup(name);
read_host_config(mesh, mesh->config, name);
- if(!get_config_string(lookup_config(mesh->config, "Port"), &mesh->myport))
- mesh->myport = xstrdup("655");
- else
- port_specified = true;
+ if(!get_config_string(lookup_config(mesh->config, "Port"), &mesh->myport)) {
+ int port = check_port(mesh);
+
+ if(port == 0) {
+ return false;
+ }
+
+ xasprintf(&mesh->myport, "%d", port);
+ }
mesh->self->connection->options = 0;
mesh->self->connection->protocol_major = PROT_MAJOR;
mesh->self->options |= PROT_MINOR << 24;
- if(!read_ecdsa_private_key(mesh))
+ if(!read_ecdsa_private_key(mesh)) {
return false;
+ }
/* Ensure mesh->myport is numeric */
if(!atoi(mesh->myport)) {
struct addrinfo *ai = str2addrinfo("localhost", mesh->myport, SOCK_DGRAM);
sockaddr_t sa;
- if(!ai || !ai->ai_addr)
+
+ if(!ai || !ai->ai_addr) {
return false;
+ }
+
free(mesh->myport);
memcpy(&sa, ai->ai_addr, ai->ai_addrlen);
sockaddr2str(&sa, NULL, &mesh->myport);
/* Check some options */
- if(!setup_myself_reloadable(mesh))
+ if(!setup_myself_reloadable(mesh)) {
return false;
+ }
/* Compression */
mesh->self->via = mesh->self;
mesh->self->status.reachable = true;
mesh->self->last_state_change = mesh->loop.now.tv_sec;
- node_add(mesh->self);
- graph();
+ node_write_devclass(mesh, mesh->self);
+ node_add(mesh, mesh->self);
+
+ graph(mesh);
- if(autoconnect)
- load_all_nodes(mesh);
+ load_all_nodes(mesh);
/* Open sockets */
mesh->listen_sockets = 0;
- int cfgs = 0;
- if(!add_listen_address(mesh, address, NULL))
- return false;
+ if(!add_listen_address(mesh, address, NULL)) {
+ if(strcmp(mesh->myport, "0")) {
+ logger(mesh, MESHLINK_INFO, "Could not bind to port %s, asking OS to choose one for us", mesh->myport);
+ free(mesh->myport);
+ mesh->myport = strdup("0");
+
+ if(!mesh->myport) {
+ return false;
+ }
+
+ if(!add_listen_address(mesh, address, NULL)) {
+ return false;
+ }
+ } else {
+ return false;
+ }
+ }
if(!mesh->listen_sockets) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Unable to create any listening socket!");
+ logger(mesh, MESHLINK_ERROR, "Unable to create any listening socket!");
return false;
}
- // TODO: require Port to be set? Or use "0" and use getsockname()?
-
- if(!mesh->myport)
- mesh->myport = xstrdup("655");
-
- xasprintf(&mesh->self->hostname, "MYSELF port %s", mesh->myport);
- mesh->self->connection->hostname = xstrdup(mesh->self->hostname);
-
/* Done. */
mesh->last_config_check = mesh->loop.now.tv_sec;
initialize network
*/
bool setup_network(meshlink_handle_t *mesh) {
- init_connections();
- init_nodes();
- init_edges();
- init_requests();
+ init_connections(mesh);
+ init_submeshes(mesh);
+ init_nodes(mesh);
+ init_edges(mesh);
+ init_requests(mesh);
mesh->pinginterval = 60;
mesh->pingtimeout = 5;
maxoutbufsize = 10 * MTU;
- if(!setup_myself(mesh))
+ if(!setup_myself(mesh)) {
return false;
+ }
return true;
}
close all open network connections
*/
void close_network_connections(meshlink_handle_t *mesh) {
- for(list_node_t *node = mesh->connections->head, *next; node; node = next) {
- next = node->next;
- connection_t *c = node->data;
- c->outgoing = NULL;
- terminate_connection(mesh, c, false);
+ if(mesh->connections) {
+ for(list_node_t *node = mesh->connections->head, *next; node; node = next) {
+ next = node->next;
+ connection_t *c = node->data;
+ c->outgoing = NULL;
+ terminate_connection(mesh, c, false);
+ }
}
- if(mesh->outgoings)
+ if(mesh->outgoings) {
list_delete_list(mesh->outgoings);
+ }
if(mesh->self && mesh->self->connection) {
terminate_connection(mesh, mesh->self->connection, false);
close(mesh->listen_socket[i].udp.fd);
}
- exit_requests();
- exit_edges();
- exit_nodes();
- exit_connections();
+ exit_requests(mesh);
+ exit_edges(mesh);
+ exit_nodes(mesh);
+ exit_connections(mesh);
- if(mesh->myport) free(mesh->myport);
+ if(mesh->myport) {
+ free(mesh->myport);
+ }
return;
}
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