#include "conf.h"
#include "connection.h"
#include "ecdsa.h"
-#include "graph.h"
#include "logger.h"
#include "meshlink_internal.h"
#include "net.h"
#include "route.h"
#include "utils.h"
#include "xalloc.h"
-#include "submesh.h"
/// Helper function to start parsing a host config file
static bool node_get_config(meshlink_handle_t *mesh, node_t *n, config_t *config, packmsg_input_t *in) {
}
}
- time_t last_reachable = packmsg_get_int64(&in);
- time_t last_unreachable = packmsg_get_int64(&in);
-
- if(!n->last_reachable) {
- n->last_reachable = last_reachable;
- }
-
- if(!n->last_unreachable) {
- n->last_unreachable = last_unreachable;
- }
+ packmsg_skip_element(&in); // last_reachable
+ packmsg_skip_element(&in); // last_unreachable
config_free(&config);
return true;
/// Fill in node details from a config blob.
bool node_read_from_config(meshlink_handle_t *mesh, node_t *n, const config_t *config) {
+ (void)mesh;
+
if(n->canonical_address) {
return true;
}
n->name = name;
}
- char *submesh_name = packmsg_get_str_dup(&in);
-
- if(!strcmp(submesh_name, CORE_MESH)) {
- free(submesh_name);
- n->submesh = NULL;
- } else {
- n->submesh = lookup_or_create_submesh(mesh, submesh_name);
- free(submesh_name);
-
- if(!n->submesh) {
- return false;
- }
- }
+ packmsg_skip_element(&in); // submesh_name
n->devclass = packmsg_get_int32(&in);
n->status.blacklisted = packmsg_get_bool(&in);
}
}
- n->last_reachable = packmsg_get_int64(&in);
- n->last_unreachable = packmsg_get_int64(&in);
+ packmsg_skip_element(&in); // last_reachable
+ packmsg_skip_element(&in); // last_unreachable
return packmsg_done(&in);
}
packmsg_add_uint32(&out, MESHLINK_CONFIG_VERSION);
packmsg_add_str(&out, n->name);
- packmsg_add_str(&out, n->submesh ? n->submesh->name : CORE_MESH);
+ packmsg_add_str(&out, CORE_MESH);
packmsg_add_int32(&out, n->devclass);
packmsg_add_bool(&out, n->status.blacklisted);
packmsg_add_sockaddr(&out, &n->recent[i]);
}
- packmsg_add_int64(&out, n->last_reachable);
- packmsg_add_int64(&out, n->last_unreachable);
+ packmsg_add_int64(&out, 0); // last_reachable
+ packmsg_add_int64(&out, 0); // last_unreachable
if(!packmsg_output_ok(&out)) {
meshlink_errno = MESHLINK_EINTERNAL;
return true;
}
-int setup_tcp_listen_socket(meshlink_handle_t *mesh, const struct addrinfo *aip) {
- int nfd = socket(aip->ai_family, SOCK_STREAM, IPPROTO_TCP);
-
- if(nfd == -1) {
- return -1;
- }
-
-#ifdef FD_CLOEXEC
- fcntl(nfd, F_SETFD, FD_CLOEXEC);
-#endif
-
-#ifdef O_NONBLOCK
- int flags = fcntl(nfd, F_GETFL);
-
- if(fcntl(nfd, F_SETFL, flags | O_NONBLOCK) < 0) {
- closesocket(nfd);
- logger(mesh, MESHLINK_ERROR, "System call `%s' failed: %s", "fcntl", strerror(errno));
- return -1;
- }
-
-#elif defined(WIN32)
- unsigned long arg = 1;
-
- if(ioctlsocket(nfd, FIONBIO, &arg) != 0) {
- closesocket(nfd);
- logger(mesh, MESHLINK_ERROR, "Call to `%s' failed: %s", "ioctlsocket", sockstrerror(sockerrno));
- return -1;
- }
-
-#endif
- int option = 1;
- setsockopt(nfd, SOL_SOCKET, SO_REUSEADDR, (void *)&option, sizeof(option));
-
-#if defined(IPV6_V6ONLY)
-
- if(aip->ai_family == AF_INET6) {
- setsockopt(nfd, IPPROTO_IPV6, IPV6_V6ONLY, (void *)&option, sizeof(option));
- }
-
-#else
-#warning IPV6_V6ONLY not defined
-#endif
-
- if(bind(nfd, aip->ai_addr, aip->ai_addrlen)) {
- closesocket(nfd);
- return -1;
- }
-
- if(listen(nfd, 3)) {
- logger(mesh, MESHLINK_ERROR, "System call `%s' failed: %s", "listen", sockstrerror(sockerrno));
- closesocket(nfd);
- return -1;
- }
-
- return nfd;
-}
-
-int setup_udp_listen_socket(meshlink_handle_t *mesh, const struct addrinfo *aip) {
- int nfd = socket(aip->ai_family, SOCK_DGRAM, IPPROTO_UDP);
-
- if(nfd == -1) {
- return -1;
- }
-
-#ifdef FD_CLOEXEC
- fcntl(nfd, F_SETFD, FD_CLOEXEC);
-#endif
-
-#ifdef O_NONBLOCK
- int flags = fcntl(nfd, F_GETFL);
-
- if(fcntl(nfd, F_SETFL, flags | O_NONBLOCK) < 0) {
- closesocket(nfd);
- logger(mesh, MESHLINK_ERROR, "System call `%s' failed: %s", "fcntl", strerror(errno));
- return -1;
- }
-
-#elif defined(WIN32)
- unsigned long arg = 1;
-
- if(ioctlsocket(nfd, FIONBIO, &arg) != 0) {
- closesocket(nfd);
- logger(mesh, MESHLINK_ERROR, "Call to `%s' failed: %s", "ioctlsocket", sockstrerror(sockerrno));
- return -1;
- }
-
-#endif
-
- int option = 1;
- setsockopt(nfd, SOL_SOCKET, SO_REUSEADDR, (void *)&option, sizeof(option));
- setsockopt(nfd, SOL_SOCKET, SO_BROADCAST, (void *)&option, sizeof(option));
-
-#if defined(IPV6_V6ONLY)
-
- if(aip->ai_family == AF_INET6) {
- setsockopt(nfd, IPPROTO_IPV6, IPV6_V6ONLY, (void *)&option, sizeof(option));
- }
-
-#endif
-
-#if defined(IP_DONTFRAG) && !defined(IP_DONTFRAGMENT)
-#define IP_DONTFRAGMENT IP_DONTFRAG
-#endif
-
-#if defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DO)
- option = IP_PMTUDISC_DO;
- setsockopt(nfd, IPPROTO_IP, IP_MTU_DISCOVER, (void *)&option, sizeof(option));
-#elif defined(IP_DONTFRAGMENT)
- option = 1;
- setsockopt(nfd, IPPROTO_IP, IP_DONTFRAGMENT, (void *)&option, sizeof(option));
-#endif
-
- if(aip->ai_family == AF_INET6) {
-#if defined(IPV6_MTU_DISCOVER) && defined(IPV6_PMTUDISC_DO)
- option = IPV6_PMTUDISC_DO;
- setsockopt(nfd, IPPROTO_IPV6, IPV6_MTU_DISCOVER, (void *)&option, sizeof(option));
-#elif defined(IPV6_DONTFRAG)
- option = 1;
- setsockopt(nfd, IPPROTO_IPV6, IPV6_DONTFRAG, (void *)&option, sizeof(option));
-#endif
- }
-
- if(bind(nfd, aip->ai_addr, aip->ai_addrlen)) {
- closesocket(nfd);
- return -1;
- }
-
- return nfd;
-}
-
-/*
- Add listening sockets.
-*/
-static bool add_listen_sockets(meshlink_handle_t *mesh) {
- struct addrinfo *ai;
-
- struct addrinfo hint = {
- .ai_family = AF_UNSPEC,
- .ai_socktype = SOCK_STREAM,
- .ai_protocol = IPPROTO_TCP,
- .ai_flags = AI_PASSIVE | AI_NUMERICSERV,
- };
-
- int err = getaddrinfo(NULL, mesh->myport, &hint, &ai);
-
- if(err || !ai) {
- 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;
-
- for(int i = 0; i < mesh->listen_sockets; i++) {
- if(!memcmp(&mesh->listen_socket[i].sa, aip->ai_addr, aip->ai_addrlen)) {
- found = true;
- break;
- }
- }
-
- if(found) {
- continue;
- }
-
- if(mesh->listen_sockets >= MAXSOCKETS) {
- logger(mesh, MESHLINK_ERROR, "Too many listening sockets");
- return false;
- }
-
- /* Try to bind to TCP */
-
- int tcp_fd = setup_tcp_listen_socket(mesh, aip);
-
- if(tcp_fd == -1) {
- if(errno == EADDRINUSE) {
- /* If this port is in use for any address family, avoid it. */
- success = false;
- break;
- } else {
- continue;
- }
- }
-
- /* If TCP worked, then we require that UDP works as well. */
-
- int udp_fd = setup_udp_listen_socket(mesh, aip);
-
- if(udp_fd == -1) {
- closesocket(tcp_fd);
- success = false;
- break;
- }
-
- 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->log_level <= MESHLINK_INFO) {
- char *hostname = sockaddr2hostname((sockaddr_t *) aip->ai_addr);
- logger(mesh, MESHLINK_INFO, "Listening on %s", hostname);
- free(hostname);
- }
-
- memcpy(&mesh->listen_socket[mesh->listen_sockets].sa, aip->ai_addr, aip->ai_addrlen);
- memcpy(&mesh->listen_socket[mesh->listen_sockets].broadcast_sa, aip->ai_addr, aip->ai_addrlen);
-
- if(aip->ai_family == AF_INET6) {
- mesh->listen_socket[mesh->listen_sockets].broadcast_sa.in6.sin6_addr.s6_addr[0x0] = 0xff;
- mesh->listen_socket[mesh->listen_sockets].broadcast_sa.in6.sin6_addr.s6_addr[0x1] = 0x02;
- mesh->listen_socket[mesh->listen_sockets].broadcast_sa.in6.sin6_addr.s6_addr[0xf] = 0x01;
- } else {
- mesh->listen_socket[mesh->listen_sockets].broadcast_sa.in.sin_addr.s_addr = 0xffffffff;
- }
-
- mesh->listen_sockets++;
- success = true;
- }
-
- freeaddrinfo(ai);
-
- if(!success) {
- for(int i = 0; i < mesh->listen_sockets; i++) {
- io_del(&mesh->loop, &mesh->listen_socket[i].tcp);
- io_del(&mesh->loop, &mesh->listen_socket[i].udp);
- closesocket(mesh->listen_socket[i].tcp.fd);
- closesocket(mesh->listen_socket[i].udp.fd);
- }
-
- mesh->listen_sockets = 0;
- }
-
- return success;
-}
-
/*
Configure node_t mesh->self and set up the local sockets (listen only)
*/
logger(mesh, MESHLINK_WARNING, "Could not scan all host config files");
}
- /* Open sockets */
-
- mesh->listen_sockets = 0;
-
- if(!add_listen_sockets(mesh)) {
- if(strcmp(mesh->myport, "0")) {
- logger(mesh, MESHLINK_WARNING, "Could not bind to port %s, trying to find an alternative port", mesh->myport);
-
- if(!check_port(mesh)) {
- logger(mesh, MESHLINK_WARNING, "Could not bind to any port, trying to bind to port 0");
- free(mesh->myport);
- mesh->myport = xstrdup("0");
- }
-
- if(!add_listen_sockets(mesh)) {
- return false;
- }
- } else {
- return false;
- }
- }
-
- if(!mesh->listen_sockets) {
- logger(mesh, MESHLINK_ERROR, "Unable to create any listening socket!");
- return false;
- }
-
/* Done. */
mesh->last_unreachable = mesh->loop.now.tv_sec;
*/
bool setup_network(meshlink_handle_t *mesh) {
init_connections(mesh);
- init_submeshes(mesh);
init_nodes(mesh);
- init_edges(mesh);
- init_requests(mesh);
if(!setup_myself(mesh)) {
return false;
close all open network connections
*/
void close_network_connections(meshlink_handle_t *mesh) {
- 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->connection) {
+ mesh->connection->outgoing = NULL;
+ terminate_connection(mesh, mesh->connection, false);
}
- for(int i = 0; i < mesh->listen_sockets; i++) {
- io_del(&mesh->loop, &mesh->listen_socket[i].tcp);
- io_del(&mesh->loop, &mesh->listen_socket[i].udp);
- closesocket(mesh->listen_socket[i].tcp.fd);
- closesocket(mesh->listen_socket[i].udp.fd);
- }
-
- exit_requests(mesh);
- exit_edges(mesh);
exit_nodes(mesh);
- exit_submeshes(mesh);
exit_connections(mesh);
free(mesh->myport);
mesh->myport = NULL;
-
mesh->self = NULL;
-
- return;
}
projects / meshlink-tiny / blobdiff