#include "ed25519/sha512.h"
#include "discovery.h"
#include "devtools.h"
+#include "graph.h"
#ifndef MSG_NOSIGNAL
#define MSG_NOSIGNAL 0
// Find out what local address a socket would use if we connect to the given address.
// We do this using connect() on a UDP socket, so the kernel has to resolve the address
// of both endpoints, but this will actually not send any UDP packet.
-static bool getlocaladdr(char *destaddr, struct sockaddr *sn, socklen_t *sl, int netns) {
+static bool getlocaladdr(char *destaddr, sockaddr_t *sa, socklen_t *salen, int netns) {
struct addrinfo *rai = NULL;
const struct addrinfo hint = {
.ai_family = AF_UNSPEC,
freeaddrinfo(rai);
- if(getsockname(sock, sn, sl)) {
+ if(getsockname(sock, &sa->sa, salen)) {
closesocket(sock);
return false;
}
}
static bool getlocaladdrname(char *destaddr, char *host, socklen_t hostlen, int netns) {
- struct sockaddr_storage sn;
- socklen_t sl = sizeof(sn);
+ sockaddr_t sa;
+ socklen_t salen = sizeof(sa);
- if(!getlocaladdr(destaddr, (struct sockaddr *)&sn, &sl, netns)) {
+ if(!getlocaladdr(destaddr, &sa, &salen, netns)) {
return false;
}
- if(getnameinfo((struct sockaddr *)&sn, sl, host, hostlen, NULL, 0, NI_NUMERICHOST | NI_NUMERICSERV)) {
+ if(getnameinfo(&sa.sa, salen, host, hostlen, NULL, 0, NI_NUMERICHOST | NI_NUMERICSERV)) {
return false;
}
break;
}
- if(found) {
+ if(found || !is_valid_hostname(host[i])) {
free(host[i]);
free(port[i]);
host[i] = NULL;
remove_duplicate_hostnames(hostname, port, 4);
- if(!(flags & MESHLINK_INVITE_NUMERIC)) {
- for(int i = 0; i < 4; i++) {
- if(!hostname[i]) {
- continue;
- }
+ // Resolve the hostnames
+ for(int i = 0; i < 4; i++) {
+ if(!hostname[i]) {
+ continue;
+ }
- // Convert what we have to a sockaddr
- struct addrinfo *ai_in, *ai_out;
- struct addrinfo hint = {
- .ai_family = AF_UNSPEC,
- .ai_flags = AI_NUMERICSERV,
- .ai_socktype = SOCK_STREAM,
- };
- int err = getaddrinfo(hostname[i], port[i], &hint, &ai_in);
+ // Convert what we have to a sockaddr
+ struct addrinfo *ai_in, *ai_out;
+ struct addrinfo hint = {
+ .ai_family = AF_UNSPEC,
+ .ai_flags = AI_NUMERICSERV,
+ .ai_socktype = SOCK_STREAM,
+ };
+ int err = getaddrinfo(hostname[i], port[i], &hint, &ai_in);
- if(err || !ai_in) {
- continue;
- }
+ if(err || !ai_in) {
+ continue;
+ }
- // Convert it to a hostname
- char resolved_host[NI_MAXHOST];
- char resolved_port[NI_MAXSERV];
- err = getnameinfo(ai_in->ai_addr, ai_in->ai_addrlen, resolved_host, sizeof resolved_host, resolved_port, sizeof resolved_port, NI_NUMERICSERV);
+ // Remember the address
+ node_add_recent_address(mesh, mesh->self, (sockaddr_t *)ai_in->ai_addr);
- if(err) {
- freeaddrinfo(ai_in);
- continue;
- }
+ if(flags & MESHLINK_INVITE_NUMERIC) {
+ // We don't need to do any further conversion
+ freeaddrinfo(ai_in);
+ continue;
+ }
- // Convert the hostname back to a sockaddr
- hint.ai_family = ai_in->ai_family;
- err = getaddrinfo(resolved_host, resolved_port, &hint, &ai_out);
+ // Convert it to a hostname
+ char resolved_host[NI_MAXHOST];
+ char resolved_port[NI_MAXSERV];
+ err = getnameinfo(ai_in->ai_addr, ai_in->ai_addrlen, resolved_host, sizeof resolved_host, resolved_port, sizeof resolved_port, NI_NUMERICSERV);
- if(err || !ai_out) {
- freeaddrinfo(ai_in);
- continue;
- }
+ if(err || !is_valid_hostname(resolved_host)) {
+ freeaddrinfo(ai_in);
+ continue;
+ }
- // Check if it's still the same sockaddr
- if(ai_in->ai_addrlen != ai_out->ai_addrlen || memcmp(ai_in->ai_addr, ai_out->ai_addr, ai_in->ai_addrlen)) {
- freeaddrinfo(ai_in);
- freeaddrinfo(ai_out);
- continue;
- }
+ // Convert the hostname back to a sockaddr
+ hint.ai_family = ai_in->ai_family;
+ err = getaddrinfo(resolved_host, resolved_port, &hint, &ai_out);
- // Yes: replace the hostname with the resolved one
- free(hostname[i]);
- hostname[i] = xstrdup(resolved_host);
+ if(err || !ai_out) {
+ freeaddrinfo(ai_in);
+ continue;
+ }
+ // Check if it's still the same sockaddr
+ if(ai_in->ai_addrlen != ai_out->ai_addrlen || memcmp(ai_in->ai_addr, ai_out->ai_addr, ai_in->ai_addrlen)) {
freeaddrinfo(ai_in);
freeaddrinfo(ai_out);
+ continue;
}
+
+ // Yes: replace the hostname with the resolved one
+ free(hostname[i]);
+ hostname[i] = xstrdup(resolved_host);
+
+ freeaddrinfo(ai_in);
+ freeaddrinfo(ai_out);
}
// Remove duplicates again, since IPv4 and IPv6 addresses might map to the same hostname
continue;
}
- // Ensure we have the same addresses in our own host config file.
- char *tmphostport;
- xasprintf(&tmphostport, "%s %s", hostname[i], port[i]);
- /// TODO: FIX
- //config_add_string(&mesh->config, "Address", tmphostport);
- free(tmphostport);
-
// Append the address to the hostport string
char *newhostport;
xasprintf(&newhostport, (strchr(hostname[i], ':') ? "%s%s[%s]:%s" : "%s%s%s:%s"), hostport ? hostport : "", hostport ? "," : "", hostname[i], port[i]);
return true;
}
-int check_port(meshlink_handle_t *mesh) {
+static int check_port(meshlink_handle_t *mesh) {
for(int i = 0; i < 1000; i++) {
- int port = 0x1000 + (rand() & 0x7fff);
+ int port = 0x1000 + prng(mesh, 0x8000);
if(try_bind(port)) {
free(mesh->myport);
}
// Write host config files
- while(count--) {
+ for(uint32_t i = 0; i < count; i++) {
const void *data;
uint32_t len = packmsg_get_bin_raw(&in, &data);
return false;
}
- node_add(mesh, n);
+ if(i == 0) {
+ /* The first host config file is of the inviter itself;
+ * remember the address we are currently using for the invitation connection.
+ */
+ sockaddr_t sa;
+ socklen_t salen = sizeof(sa);
- if(!config_write(mesh, "current", n->name, &config, mesh->config_key)) {
+ if(getpeername(mesh->sock, &sa.sa, &salen) == 0) {
+ node_add_recent_address(mesh, n, &sa);
+ }
+ }
+
+ if(!node_write_config(mesh, n)) {
+ free_node(n);
return false;
}
+
+ node_add(mesh, n);
}
/* Ensure the configuration directory metadata is on disk */
- if(!config_sync(mesh, "current")) {
+ if(!config_sync(mesh, "current") || !sync_path(mesh->confbase)) {
return false;
}
- sptps_send_record(&(mesh->sptps), 1, ecdsa_get_public_key(mesh->private_key), 32);
+ sptps_send_record(&mesh->sptps, 1, ecdsa_get_public_key(mesh->private_key), 32);
logger(mesh, MESHLINK_DEBUG, "Configuration stored in: %s\n", mesh->confbase);
switch(type) {
case SPTPS_HANDSHAKE:
- return sptps_send_record(&(mesh->sptps), 0, mesh->cookie, sizeof(mesh)->cookie);
+ return sptps_send_record(&mesh->sptps, 0, mesh->cookie, sizeof(mesh)->cookie);
case 0:
return finalize_join(mesh, msg, len);
case 1:
- logger(mesh, MESHLINK_DEBUG, "Invitation succesfully accepted.\n");
+ logger(mesh, MESHLINK_DEBUG, "Invitation successfully accepted.\n");
shutdown(mesh->sock, SHUT_RDWR);
mesh->success = true;
break;
[MESHLINK_EPEER] = "Error communicating with peer",
[MESHLINK_ENOTSUP] = "Operation not supported",
[MESHLINK_EBUSY] = "MeshLink instance already in use",
+ [MESHLINK_EBLACKLISTED] = "Node is blacklisted",
};
const char *meshlink_strerror(meshlink_errno_t err) {
// Get our local address(es) by simulating connecting to an Internet host.
static void add_local_addresses(meshlink_handle_t *mesh) {
- struct sockaddr_storage sn;
- socklen_t sl = sizeof(sn);
+ sockaddr_t sa;
+ sa.storage.ss_family = AF_UNKNOWN;
+ socklen_t salen = sizeof(sa);
// IPv4 example.org
- if(getlocaladdr("93.184.216.34", (struct sockaddr *)&sn, &sl, mesh->netns)) {
- ((struct sockaddr_in *)&sn)->sin_port = ntohs(atoi(mesh->myport));
- meshlink_hint_address(mesh, (meshlink_node_t *)mesh->self, (struct sockaddr *)&sn);
+ if(getlocaladdr("93.184.216.34", &sa, &salen, mesh->netns)) {
+ sa.in.sin_port = ntohs(atoi(mesh->myport));
+ node_add_recent_address(mesh, mesh->self, &sa);
}
// IPv6 example.org
- sl = sizeof(sn);
+ salen = sizeof(sa);
- if(getlocaladdr("2606:2800:220:1:248:1893:25c8:1946", (struct sockaddr *)&sn, &sl, mesh->netns)) {
- ((struct sockaddr_in6 *)&sn)->sin6_port = ntohs(atoi(mesh->myport));
- meshlink_hint_address(mesh, (meshlink_node_t *)mesh->self, (struct sockaddr *)&sn);
+ if(getlocaladdr("2606:2800:220:1:248:1893:25c8:1946", &sa, &salen, mesh->netns)) {
+ sa.in6.sin6_port = ntohs(atoi(mesh->myport));
+ node_add_recent_address(mesh, mesh->self, &sa);
}
}
static bool meshlink_setup(meshlink_handle_t *mesh) {
+ if(!config_destroy(mesh->confbase, "new")) {
+ logger(mesh, MESHLINK_ERROR, "Could not delete configuration in %s/new: %s\n", mesh->confbase, strerror(errno));
+ meshlink_errno = MESHLINK_ESTORAGE;
+ return false;
+ }
+
+ if(!config_destroy(mesh->confbase, "old")) {
+ logger(mesh, MESHLINK_ERROR, "Could not delete configuration in %s/old: %s\n", mesh->confbase, strerror(errno));
+ meshlink_errno = MESHLINK_ESTORAGE;
+ return false;
+ }
+
if(!config_init(mesh, "current")) {
logger(mesh, MESHLINK_ERROR, "Could not set up configuration in %s/current: %s\n", mesh->confbase, strerror(errno));
meshlink_errno = MESHLINK_ESTORAGE;
mesh->self->name = xstrdup(mesh->name);
mesh->self->devclass = mesh->devclass;
mesh->self->ecdsa = ecdsa_set_public_key(ecdsa_get_public_key(mesh->private_key));
+ mesh->self->session_id = mesh->session_id;
if(!write_main_config_files(mesh)) {
logger(mesh, MESHLINK_ERROR, "Could not write main config files into %s/current: %s\n", mesh->confbase, strerror(errno));
return false;
}
- if(!main_config_lock(mesh)) {
- logger(NULL, MESHLINK_ERROR, "Cannot lock main config file\n");
- meshlink_errno = MESHLINK_ESTORAGE;
- return false;
- }
-
return true;
}
static bool meshlink_read_config(meshlink_handle_t *mesh) {
- // Open the configuration file and lock it
- if(!main_config_lock(mesh)) {
- logger(NULL, MESHLINK_ERROR, "Cannot lock main config file\n");
- meshlink_errno = MESHLINK_ESTORAGE;
- return false;
- }
-
config_t config;
if(!main_config_read(mesh, "current", &config, mesh->config_key)) {
mesh->self = new_node();
mesh->self->name = xstrdup(name);
mesh->self->devclass = mesh->devclass;
+ mesh->self->session_id = mesh->session_id;
if(!node_read_public_key(mesh, mesh->self)) {
logger(NULL, MESHLINK_ERROR, "Could not read our host configuration file!");
if(!name || !*name) {
logger(NULL, MESHLINK_ERROR, "No name given!\n");
- //return NULL;
- } else { //check name only if there is a name != NULL
- if(!check_id(name)) {
- logger(NULL, MESHLINK_ERROR, "Invalid name given!\n");
- meshlink_errno = MESHLINK_EINVAL;
- return NULL;
- }
+ meshlink_errno = MESHLINK_EINVAL;
+ return NULL;
+ };
+
+ if(!check_id(name)) {
+ logger(NULL, MESHLINK_ERROR, "Invalid name given!\n");
+ meshlink_errno = MESHLINK_EINVAL;
+ return NULL;
}
if(devclass < 0 || devclass >= DEV_CLASS_COUNT) {
return false;
}
- pthread_mutex_lock(&(mesh->mesh_mutex));
+ pthread_mutex_lock(&mesh->mutex);
// Create hash for the new key
void *new_config_key;
if(!prf(new_key, new_keylen, "MeshLink configuration key", 26, new_config_key, CHACHA_POLY1305_KEYLEN)) {
logger(mesh, MESHLINK_ERROR, "Error creating new configuration key!\n");
meshlink_errno = MESHLINK_EINTERNAL;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return false;
}
if(!config_copy(mesh, "current", mesh->config_key, "new", new_config_key)) {
logger(mesh, MESHLINK_ERROR, "Could not set up configuration in %s/old: %s\n", mesh->confbase, strerror(errno));
meshlink_errno = MESHLINK_ESTORAGE;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return false;
}
devtool_keyrotate_probe(1);
- main_config_unlock(mesh);
-
// Rename confbase/current/ to confbase/old
if(!config_rename(mesh, "current", "old")) {
logger(mesh, MESHLINK_ERROR, "Cannot rename %s/current to %s/old\n", mesh->confbase, mesh->confbase);
meshlink_errno = MESHLINK_ESTORAGE;
- main_config_lock(mesh);
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return false;
}
if(!config_rename(mesh, "new", "current")) {
logger(mesh, MESHLINK_ERROR, "Cannot rename %s/new to %s/current\n", mesh->confbase, mesh->confbase);
meshlink_errno = MESHLINK_ESTORAGE;
- main_config_lock(mesh);
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return false;
}
devtool_keyrotate_probe(3);
- if(!main_config_lock(mesh)) {
- pthread_mutex_unlock(&(mesh->mesh_mutex));
- return false;
- }
-
// Cleanup the "old" confbase sub-directory
if(!config_destroy(mesh->confbase, "old")) {
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return false;
}
free(mesh->config_key);
mesh->config_key = new_config_key;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return true;
}
mesh->log_cb = global_log_cb;
mesh->log_level = global_log_level;
+ randomize(&mesh->prng_state, sizeof(mesh->prng_state));
+
+ do {
+ randomize(&mesh->session_id, sizeof(mesh->session_id));
+ } while(mesh->session_id == 0);
+
memcpy(mesh->dev_class_traits, default_class_traits, sizeof(default_class_traits));
if(usingname) {
pthread_mutexattr_t attr;
pthread_mutexattr_init(&attr);
pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
- pthread_mutex_init(&(mesh->mesh_mutex), &attr);
+ pthread_mutex_init(&mesh->mutex, &attr);
mesh->threadstarted = false;
event_loop_init(&mesh->loop);
meshlink_queue_init(&mesh->outpacketqueue);
+ // Atomically lock the configuration directory.
+ if(!main_config_lock(mesh)) {
+ meshlink_close(mesh);
+ return NULL;
+ }
+
// If no configuration exists yet, create it.
if(!meshlink_confbase_exists(mesh)) {
}
add_local_addresses(mesh);
- node_write_config(mesh, mesh->self);
+
+ if(!node_write_config(mesh, mesh->self)) {
+ logger(NULL, MESHLINK_ERROR, "Cannot update configuration\n");
+ return NULL;
+ }
idle_set(&mesh->loop, idle, mesh);
}
//lock mesh->nodes
- pthread_mutex_lock(&(mesh->mesh_mutex));
+ pthread_mutex_lock(&mesh->mutex);
s = (meshlink_submesh_t *)create_submesh(mesh, submesh);
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return s;
}
#endif
- pthread_mutex_lock(&(mesh->mesh_mutex));
+ pthread_mutex_lock(&mesh->mutex);
logger(mesh, MESHLINK_DEBUG, "Starting main_loop...\n");
pthread_cond_broadcast(&mesh->cond);
main_loop(mesh);
logger(mesh, MESHLINK_DEBUG, "main_loop returned.\n");
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
#if HAVE_CATTA
logger(mesh, MESHLINK_DEBUG, "meshlink_start called\n");
- pthread_mutex_lock(&(mesh->mesh_mutex));
+ pthread_mutex_lock(&mesh->mutex);
assert(mesh->self->ecdsa);
assert(!memcmp((uint8_t *)mesh->self->ecdsa + 64, (uint8_t *)mesh->private_key + 64, 32));
if(mesh->threadstarted) {
logger(mesh, MESHLINK_DEBUG, "thread was already running\n");
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return true;
}
if(!mesh->name) {
logger(mesh, MESHLINK_DEBUG, "No name given!\n");
meshlink_errno = MESHLINK_EINVAL;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return false;
}
memset(&mesh->thread, 0, sizeof(mesh)->thread);
meshlink_errno = MESHLINK_EINTERNAL;
event_loop_stop(&mesh->loop);
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return false;
}
- pthread_cond_wait(&mesh->cond, &mesh->mesh_mutex);
+ pthread_cond_wait(&mesh->cond, &mesh->mutex);
mesh->threadstarted = true;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ // Ensure we are considered reachable
+ graph(mesh);
+
+ pthread_mutex_unlock(&mesh->mutex);
return true;
}
return;
}
- pthread_mutex_lock(&(mesh->mesh_mutex));
+ pthread_mutex_lock(&mesh->mutex);
logger(mesh, MESHLINK_DEBUG, "meshlink_stop called\n");
// Shut down the main thread
// Send ourselves a UDP packet to kick the event loop
for(int i = 0; i < mesh->listen_sockets; i++) {
sockaddr_t sa;
- socklen_t salen = sizeof(sa.sa);
+ socklen_t salen = sizeof(sa);
if(getsockname(mesh->listen_socket[i].udp.fd, &sa.sa, &salen) == -1) {
logger(mesh, MESHLINK_ERROR, "System call `%s' failed: %s", "getsockname", sockstrerror(sockerrno));
if(mesh->threadstarted) {
// Wait for the main thread to finish
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
pthread_join(mesh->thread, NULL);
- pthread_mutex_lock(&(mesh->mesh_mutex));
+ pthread_mutex_lock(&mesh->mutex);
mesh->threadstarted = false;
}
exit_outgoings(mesh);
- // Write out any changed node config files
+ // Ensure we are considered unreachable
+ if(mesh->nodes) {
+ graph(mesh);
+ }
+
+ // Try to write out any changed node config files, ignore errors at this point.
if(mesh->nodes) {
for splay_each(node_t, n, mesh->nodes) {
if(n->status.dirty) {
- node_write_config(mesh, n);
- n->status.dirty = false;
+ n->status.dirty = !node_write_config(mesh, n);
}
}
}
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
}
void meshlink_close(meshlink_handle_t *mesh) {
meshlink_stop(mesh);
// lock is not released after this
- pthread_mutex_lock(&(mesh->mesh_mutex));
+ pthread_mutex_lock(&mesh->mutex);
// Close and free all resources used.
close(mesh->netns);
}
+ for(vpn_packet_t *packet; (packet = meshlink_queue_pop(&mesh->outpacketqueue));) {
+ free(packet);
+ }
+
+ meshlink_queue_exit(&mesh->outpacketqueue);
+
free(mesh->name);
free(mesh->appname);
free(mesh->confbase);
free(mesh->config_key);
ecdsa_free(mesh->private_key);
- pthread_mutex_destroy(&(mesh->mesh_mutex));
main_config_unlock(mesh);
+ pthread_mutex_unlock(&mesh->mutex);
+ pthread_mutex_destroy(&mesh->mutex);
+
memset(mesh, 0, sizeof(*mesh));
free(mesh);
return false;
}
- if(!config_destroy(confbase, "current")) {
- logger(NULL, MESHLINK_ERROR, "Cannot remove confbase sub-directories %s: %s\n", confbase, strerror(errno));
+ /* Exit early if the confbase directory itself doesn't exist */
+ if(access(confbase, F_OK) && errno == ENOENT) {
+ return true;
+ }
+
+ /* Take the lock the same way meshlink_open() would. */
+ char lockfilename[PATH_MAX];
+ snprintf(lockfilename, sizeof(lockfilename), "%s" SLASH "meshlink.lock", confbase);
+
+ FILE *lockfile = fopen(lockfilename, "w+");
+
+ if(!lockfile) {
+ logger(NULL, MESHLINK_ERROR, "Could not open lock file %s: %s", lockfilename, strerror(errno));
+ meshlink_errno = MESHLINK_ESTORAGE;
+ return false;
+ }
+
+#ifdef FD_CLOEXEC
+ fcntl(fileno(lockfile), F_SETFD, FD_CLOEXEC);
+#endif
+
+#ifdef HAVE_MINGW
+ // TODO: use _locking()?
+#else
+
+ if(flock(fileno(lockfile), LOCK_EX | LOCK_NB) != 0) {
+ logger(NULL, MESHLINK_ERROR, "Configuration directory %s still in use\n", lockfilename);
+ fclose(lockfile);
+ meshlink_errno = MESHLINK_EBUSY;
+ return false;
+ }
+
+#endif
+
+ if(!config_destroy(confbase, "current") || !config_destroy(confbase, "new") || !config_destroy(confbase, "old")) {
+ logger(NULL, MESHLINK_ERROR, "Cannot remove sub-directories in %s: %s\n", confbase, strerror(errno));
+ return false;
+ }
+
+ if(unlink(lockfilename)) {
+ logger(NULL, MESHLINK_ERROR, "Cannot remove lock file %s: %s\n", lockfilename, strerror(errno));
+ fclose(lockfile);
+ meshlink_errno = MESHLINK_ESTORAGE;
return false;
}
- config_destroy(confbase, "new");
- config_destroy(confbase, "old");
+ fclose(lockfile);
- if(rmdir(confbase) && errno != ENOENT) {
- logger(NULL, MESHLINK_ERROR, "Cannot remove directory %s: %s\n", confbase, strerror(errno));
+ if(!sync_path(confbase)) {
+ logger(NULL, MESHLINK_ERROR, "Cannot sync directory %s: %s\n", confbase, strerror(errno));
meshlink_errno = MESHLINK_ESTORAGE;
return false;
}
return;
}
- pthread_mutex_lock(&(mesh->mesh_mutex));
+ pthread_mutex_lock(&mesh->mutex);
mesh->receive_cb = cb;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
}
void meshlink_set_connection_try_cb(meshlink_handle_t *mesh, meshlink_connection_try_cb_t cb) {
return;
}
- pthread_mutex_lock(&(mesh->mesh_mutex));
+ pthread_mutex_lock(&mesh->mutex);
mesh->connection_try_cb = cb;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
}
void meshlink_set_node_status_cb(meshlink_handle_t *mesh, meshlink_node_status_cb_t cb) {
return;
}
- pthread_mutex_lock(&(mesh->mesh_mutex));
+ pthread_mutex_lock(&mesh->mutex);
mesh->node_status_cb = cb;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
}
void meshlink_set_node_pmtu_cb(meshlink_handle_t *mesh, meshlink_node_pmtu_cb_t cb) {
return;
}
- pthread_mutex_lock(&(mesh->mesh_mutex));
+ pthread_mutex_lock(&mesh->mutex);
mesh->node_pmtu_cb = cb;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
}
void meshlink_set_node_duplicate_cb(meshlink_handle_t *mesh, meshlink_node_duplicate_cb_t cb) {
return;
}
- pthread_mutex_lock(&(mesh->mesh_mutex));
+ pthread_mutex_lock(&mesh->mutex);
mesh->node_duplicate_cb = cb;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
}
void meshlink_set_log_cb(meshlink_handle_t *mesh, meshlink_log_level_t level, meshlink_log_cb_t cb) {
if(mesh) {
- pthread_mutex_lock(&(mesh->mesh_mutex));
+ pthread_mutex_lock(&mesh->mutex);
mesh->log_cb = cb;
mesh->log_level = cb ? level : 0;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
} else {
global_log_cb = cb;
global_log_level = cb ? level : 0;
}
}
+void meshlink_set_error_cb(struct meshlink_handle *mesh, meshlink_error_cb_t cb) {
+ if(!mesh) {
+ meshlink_errno = MESHLINK_EINVAL;
+ return;
+ }
+
+ pthread_mutex_lock(&mesh->mutex);
+ mesh->error_cb = cb;
+ pthread_mutex_unlock(&mesh->mutex);
+}
+
bool meshlink_send(meshlink_handle_t *mesh, meshlink_node_t *destination, const void *data, size_t len) {
meshlink_packethdr_t *hdr;
if(n->status.blacklisted) {
logger(mesh, MESHLINK_ERROR, "Node %s blacklisted, dropping packet\n", n->name);
+ meshlink_errno = MESHLINK_EBLACKLISTED;
return false;
}
}
// Notify event loop
- signal_trigger(&(mesh->loop), &(mesh->datafromapp));
+ signal_trigger(&mesh->loop, &mesh->datafromapp);
return true;
}
-void meshlink_send_from_queue(event_loop_t *loop, meshlink_handle_t *mesh) {
+void meshlink_send_from_queue(event_loop_t *loop, void *data) {
(void)loop;
+ meshlink_handle_t *mesh = data;
vpn_packet_t *packet = meshlink_queue_pop(&mesh->outpacketqueue);
if(!packet) {
mesh->self->in_packets++;
mesh->self->in_bytes += packet->len;
route(mesh, mesh->self, packet);
+
+ free(packet);
}
ssize_t meshlink_get_pmtu(meshlink_handle_t *mesh, meshlink_node_t *destination) {
return -1;
}
- pthread_mutex_lock(&(mesh->mesh_mutex));
+ pthread_mutex_lock(&mesh->mutex);
node_t *n = (node_t *)destination;
if(!n->status.reachable) {
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return 0;
} else if(n->mtuprobes > 30 && n->minmtu) {
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return n->minmtu;
} else {
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return MTU;
}
}
return NULL;
}
- pthread_mutex_lock(&(mesh->mesh_mutex));
+ pthread_mutex_lock(&mesh->mutex);
node_t *n = (node_t *)node;
if(!node_read_public_key(mesh, n) || !n->ecdsa) {
meshlink_errno = MESHLINK_EINTERNAL;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return false;
}
meshlink_errno = MESHLINK_EINTERNAL;
}
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return fingerprint;
}
return NULL;
}
- meshlink_node_t *node = NULL;
+ node_t *n = NULL;
- pthread_mutex_lock(&(mesh->mesh_mutex));
- node = (meshlink_node_t *)lookup_node(mesh, (char *)name); // TODO: make lookup_node() use const
- pthread_mutex_unlock(&(mesh->mesh_mutex));
- return node;
+ pthread_mutex_lock(&mesh->mutex);
+ n = lookup_node(mesh, (char *)name); // TODO: make lookup_node() use const
+ pthread_mutex_unlock(&mesh->mutex);
+
+ if(!n) {
+ meshlink_errno = MESHLINK_ENOENT;
+ }
+
+ return (meshlink_node_t *)n;
}
meshlink_submesh_t *meshlink_get_submesh(meshlink_handle_t *mesh, const char *name) {
meshlink_submesh_t *submesh = NULL;
- pthread_mutex_lock(&(mesh->mesh_mutex));
+ pthread_mutex_lock(&mesh->mutex);
submesh = (meshlink_submesh_t *)lookup_submesh(mesh, name);
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
+
+ if(!submesh) {
+ meshlink_errno = MESHLINK_ENOENT;
+ }
+
return submesh;
}
meshlink_node_t **result;
//lock mesh->nodes
- pthread_mutex_lock(&(mesh->mesh_mutex));
+ pthread_mutex_lock(&mesh->mutex);
*nmemb = mesh->nodes->count;
result = realloc(nodes, *nmemb * sizeof(*nodes));
meshlink_errno = MESHLINK_ENOMEM;
}
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return result;
}
static meshlink_node_t **meshlink_get_all_nodes_by_condition(meshlink_handle_t *mesh, const void *condition, meshlink_node_t **nodes, size_t *nmemb, search_node_by_condition_t search_node) {
meshlink_node_t **result;
- pthread_mutex_lock(&(mesh->mesh_mutex));
+ pthread_mutex_lock(&mesh->mutex);
*nmemb = 0;
for splay_each(node_t, n, mesh->nodes) {
- if(true == search_node(n, condition)) {
- *nmemb = *nmemb + 1;
+ if(search_node(n, condition)) {
+ ++*nmemb;
}
}
if(*nmemb == 0) {
free(nodes);
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return NULL;
}
meshlink_node_t **p = result;
for splay_each(node_t, n, mesh->nodes) {
- if(true == search_node(n, condition)) {
+ if(search_node(n, condition)) {
*p++ = (meshlink_node_t *)n;
}
}
meshlink_errno = MESHLINK_ENOMEM;
}
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return result;
}
return false;
}
+struct time_range {
+ time_t start;
+ time_t end;
+};
+
+static bool search_node_by_last_reachable(const node_t *node, const void *condition) {
+ const struct time_range *range = condition;
+ time_t start = node->last_reachable;
+ time_t end = node->last_unreachable;
+
+ if(end < start) {
+ end = time(NULL);
+
+ if(end < start) {
+ start = end;
+ }
+ }
+
+ if(range->end >= range->start) {
+ return start <= range->end && end >= range->start;
+ } else {
+ return start > range->start || end < range->end;
+ }
+}
+
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 || devclass < 0 || devclass >= DEV_CLASS_COUNT || !nmemb) {
meshlink_errno = MESHLINK_EINVAL;
return meshlink_get_all_nodes_by_condition(mesh, submesh, nodes, nmemb, search_node_by_submesh);
}
+meshlink_node_t **meshlink_get_all_nodes_by_last_reachable(meshlink_handle_t *mesh, time_t start, time_t end, meshlink_node_t **nodes, size_t *nmemb) {
+ if(!mesh || !nmemb) {
+ meshlink_errno = MESHLINK_EINVAL;
+ return NULL;
+ }
+
+ struct time_range range = {start, end};
+
+ return meshlink_get_all_nodes_by_condition(mesh, &range, nodes, nmemb, search_node_by_last_reachable);
+}
+
dev_class_t meshlink_get_node_dev_class(meshlink_handle_t *mesh, meshlink_node_t *node) {
if(!mesh || !node) {
meshlink_errno = MESHLINK_EINVAL;
dev_class_t devclass;
- pthread_mutex_lock(&(mesh->mesh_mutex));
+ pthread_mutex_lock(&mesh->mutex);
devclass = ((node_t *)node)->devclass;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return devclass;
}
return s;
}
+bool meshlink_get_node_reachability(struct meshlink_handle *mesh, struct meshlink_node *node, time_t *last_reachable, time_t *last_unreachable) {
+ if(!mesh || !node) {
+ meshlink_errno = MESHLINK_EINVAL;
+ return NULL;
+ }
+
+ node_t *n = (node_t *)node;
+ bool reachable;
+
+ pthread_mutex_lock(&mesh->mutex);
+ reachable = n->status.reachable && !n->status.blacklisted;
+
+ if(last_reachable) {
+ *last_reachable = n->last_reachable;
+ }
+
+ if(last_unreachable) {
+ *last_unreachable = n->last_unreachable;
+ }
+
+ pthread_mutex_unlock(&mesh->mutex);
+
+ return reachable;
+}
+
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;
return false;
}
- pthread_mutex_lock(&(mesh->mesh_mutex));
+ pthread_mutex_lock(&mesh->mutex);
if(!ecdsa_sign(mesh->private_key, data, len, signature)) {
meshlink_errno = MESHLINK_EINTERNAL;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return false;
}
*siglen = MESHLINK_SIGLEN;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return true;
}
return false;
}
- pthread_mutex_lock(&(mesh->mesh_mutex));
+ pthread_mutex_lock(&mesh->mutex);
bool rval = false;
rval = ecdsa_verify(((struct node_t *)source)->ecdsa, data, len, signature);
}
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return rval;
}
static bool refresh_invitation_key(meshlink_handle_t *mesh) {
- pthread_mutex_lock(&(mesh->mesh_mutex));
+ pthread_mutex_lock(&mesh->mutex);
size_t count = invitation_purge_old(mesh, time(NULL) - mesh->invitation_timeout);
// TODO: Update invitation key if necessary?
}
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return mesh->invitation_key;
}
canonical_address = xstrdup(address);
}
- pthread_mutex_lock(&(mesh->mesh_mutex));
+ pthread_mutex_lock(&mesh->mutex);
node_t *n = (node_t *)node;
free(n->canonical_address);
n->canonical_address = canonical_address;
- node_write_config(mesh, n);
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ if(!node_write_config(mesh, n)) {
+ pthread_mutex_unlock(&mesh->mutex);
+ return false;
+ }
+
+ pthread_mutex_unlock(&mesh->mutex);
- return true;
+ return config_sync(mesh, "current");
}
bool meshlink_add_address(meshlink_handle_t *mesh, const char *address) {
return -1;
}
- return atoi(mesh->myport);
+ int port;
+
+ pthread_mutex_lock(&mesh->mutex);
+ port = atoi(mesh->myport);
+ pthread_mutex_unlock(&mesh->mutex);
+
+ return port;
}
bool meshlink_set_port(meshlink_handle_t *mesh, int port) {
bool rval = false;
- pthread_mutex_lock(&(mesh->mesh_mutex));
+ pthread_mutex_lock(&mesh->mutex);
if(mesh->threadstarted) {
meshlink_errno = MESHLINK_EINVAL;
mesh->self = new_node();
mesh->self->name = xstrdup(mesh->name);
mesh->self->devclass = mesh->devclass;
+ mesh->self->session_id = mesh->session_id;
xasprintf(&mesh->myport, "%d", port);
if(!node_read_public_key(mesh, mesh->self)) {
meshlink_errno = MESHLINK_ESTORAGE;
free_node(mesh->self);
mesh->self = NULL;
+ goto done;
} else if(!setup_network(mesh)) {
meshlink_errno = MESHLINK_ENETWORK;
- } else {
- rval = true;
+ goto done;
}
/* Rebuild our own list of recent addresses */
/* Write meshlink.conf with the updated port number */
write_main_config_files(mesh);
- if(!config_sync(mesh, "current")) {
- return false;
- }
+ rval = config_sync(mesh, "current");
done:
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return rval && meshlink_get_port(mesh) == port;
}
s = (meshlink_submesh_t *)mesh->self->submesh;
}
- pthread_mutex_lock(&(mesh->mesh_mutex));
+ pthread_mutex_lock(&mesh->mutex);
// Check validity of the new node's name
if(!check_id(name)) {
- logger(mesh, MESHLINK_DEBUG, "Invalid name for node.\n");
+ logger(mesh, MESHLINK_ERROR, "Invalid name for node.\n");
meshlink_errno = MESHLINK_EINVAL;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return NULL;
}
// Ensure no host configuration file with that name exists
if(config_exists(mesh, "current", name)) {
- logger(mesh, MESHLINK_DEBUG, "A host config file for %s already exists!\n", name);
+ logger(mesh, MESHLINK_ERROR, "A host config file for %s already exists!\n", name);
meshlink_errno = MESHLINK_EEXIST;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return NULL;
}
// Ensure no other nodes know about this name
if(meshlink_get_node(mesh, name)) {
- logger(mesh, MESHLINK_DEBUG, "A node with name %s is already known!\n", name);
+ logger(mesh, MESHLINK_ERROR, "A node with name %s is already known!\n", name);
meshlink_errno = MESHLINK_EEXIST;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return NULL;
}
char *address = get_my_hostname(mesh, flags);
if(!address) {
- logger(mesh, MESHLINK_DEBUG, "No Address known for ourselves!\n");
+ logger(mesh, MESHLINK_ERROR, "No Address known for ourselves!\n");
meshlink_errno = MESHLINK_ERESOLV;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return NULL;
}
if(!refresh_invitation_key(mesh)) {
meshlink_errno = MESHLINK_EINTERNAL;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return NULL;
}
+ // If we changed our own host config file, write it out now
+ if(mesh->self->status.dirty) {
+ if(!node_write_config(mesh, mesh->self)) {
+ logger(mesh, MESHLINK_ERROR, "Could not write our own host config file!\n");
+ pthread_mutex_unlock(&mesh->mutex);
+ return NULL;
+ }
+ }
+
char hash[64];
// Create a hash of the key.
if(!invitation_write(mesh, "current", cookiehash, &config, mesh->config_key)) {
logger(mesh, MESHLINK_DEBUG, "Could not create invitation file %s: %s\n", cookiehash, strerror(errno));
meshlink_errno = MESHLINK_ESTORAGE;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return NULL;
}
xasprintf(&url, "%s/%s%s", address, hash, cookie);
free(address);
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return url;
}
return false;
}
- pthread_mutex_lock(&(mesh->mesh_mutex));
+ pthread_mutex_lock(&mesh->mutex);
//Before doing meshlink_join make sure we are not connected to another mesh
if(mesh->threadstarted) {
logger(mesh, MESHLINK_ERROR, "Cannot join while started\n");
meshlink_errno = MESHLINK_EINVAL;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return false;
}
if(mesh->nodes->count > 1) {
logger(mesh, MESHLINK_ERROR, "Already part of an existing mesh\n");
meshlink_errno = MESHLINK_EINVAL;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return false;
}
if(!key) {
meshlink_errno = MESHLINK_EINTERNAL;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return false;
}
}
if(mesh->sock == -1) {
- pthread_mutex_unlock(&mesh->mesh_mutex);
+ pthread_mutex_unlock(&mesh->mutex);
return false;
}
logger(mesh, MESHLINK_DEBUG, "Error sending request to %s port %s: %s\n", address, port, strerror(errno));
closesocket(mesh->sock);
meshlink_errno = MESHLINK_ENETWORK;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return false;
}
logger(mesh, MESHLINK_DEBUG, "Cannot read greeting from peer\n");
closesocket(mesh->sock);
meshlink_errno = MESHLINK_ENETWORK;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return false;
}
if(sha512(fingerprint, strlen(fingerprint), hishash)) {
logger(mesh, MESHLINK_DEBUG, "Could not create hash\n%s\n", mesh->line + 2);
meshlink_errno = MESHLINK_EINTERNAL;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return false;
}
if(memcmp(hishash, mesh->hash, 18)) {
logger(mesh, MESHLINK_DEBUG, "Peer has an invalid key!\n%s\n", mesh->line + 2);
meshlink_errno = MESHLINK_EPEER;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return false;
}
if(!hiskey) {
meshlink_errno = MESHLINK_EINTERNAL;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return false;
}
// Start an SPTPS session
if(!sptps_start(&mesh->sptps, mesh, true, false, key, hiskey, meshlink_invitation_label, sizeof(meshlink_invitation_label), invitation_send, invitation_receive)) {
meshlink_errno = MESHLINK_EINTERNAL;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return false;
}
// Feed rest of input buffer to SPTPS
if(!sptps_receive_data(&mesh->sptps, mesh->buffer, mesh->blen)) {
meshlink_errno = MESHLINK_EPEER;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return false;
}
logger(mesh, MESHLINK_DEBUG, "Error reading data from %s port %s: %s\n", address, port, strerror(errno));
meshlink_errno = MESHLINK_ENETWORK;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return false;
}
if(!sptps_receive_data(&mesh->sptps, mesh->line, len)) {
meshlink_errno = MESHLINK_EPEER;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return false;
}
}
if(!mesh->success) {
logger(mesh, MESHLINK_DEBUG, "Connection closed by peer, invitation cancelled.\n");
meshlink_errno = MESHLINK_EPEER;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return false;
}
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return true;
invalid:
logger(mesh, MESHLINK_DEBUG, "Invalid invitation URL\n");
meshlink_errno = MESHLINK_EINVAL;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
return false;
}
packmsg_add_str(&out, mesh->name);
packmsg_add_str(&out, CORE_MESH);
- pthread_mutex_lock(&(mesh->mesh_mutex));
+ pthread_mutex_lock(&mesh->mutex);
packmsg_add_int32(&out, mesh->self->devclass);
packmsg_add_bool(&out, mesh->self->status.blacklisted);
uint32_t count = 0;
- for(uint32_t i = 0; i < 5; i++) {
+ for(uint32_t i = 0; i < MAX_RECENT; i++) {
if(mesh->self->recent[i].sa.sa_family) {
count++;
} else {
packmsg_add_sockaddr(&out, &mesh->self->recent[i]);
}
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ packmsg_add_int64(&out, 0);
+ packmsg_add_int64(&out, 0);
+
+ pthread_mutex_unlock(&mesh->mutex);
if(!packmsg_output_ok(&out)) {
logger(mesh, MESHLINK_DEBUG, "Error creating export data\n");
return false;
}
- pthread_mutex_lock(&(mesh->mesh_mutex));
+ pthread_mutex_lock(&mesh->mutex);
while(count--) {
const void *data;
break;
}
- config_write(mesh, "current", n->name, &config, mesh->config_key);
+ if(!config_write(mesh, "current", n->name, &config, mesh->config_key)) {
+ free_node(n);
+ return false;
+ }
+
node_add(mesh, n);
}
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ pthread_mutex_unlock(&mesh->mutex);
+
+ free(buf);
if(!packmsg_done(&in)) {
logger(mesh, MESHLINK_ERROR, "Invalid data\n");
return true;
}
-void meshlink_blacklist(meshlink_handle_t *mesh, meshlink_node_t *node) {
- if(!mesh || !node) {
- meshlink_errno = MESHLINK_EINVAL;
- return;
- }
-
- pthread_mutex_lock(&(mesh->mesh_mutex));
-
- node_t *n;
- n = (node_t *)node;
-
+static bool blacklist(meshlink_handle_t *mesh, node_t *n) {
if(n == mesh->self) {
- logger(mesh, MESHLINK_ERROR, "%s blacklisting itself?\n", node->name);
+ logger(mesh, MESHLINK_ERROR, "%s blacklisting itself?\n", n->name);
meshlink_errno = MESHLINK_EINVAL;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
- return;
+ return false;
}
if(n->status.blacklisted) {
- logger(mesh, MESHLINK_DEBUG, "Node %s already blacklisted\n", node->name);
- pthread_mutex_unlock(&(mesh->mesh_mutex));
- return;
+ logger(mesh, MESHLINK_DEBUG, "Node %s already blacklisted\n", n->name);
+ return true;
}
n->status.blacklisted = true;
- node_write_config(mesh, n);
- config_sync(mesh, "current");
-
- logger(mesh, MESHLINK_DEBUG, "Blacklisted %s.\n", node->name);
- //Immediately terminate any connections we have with the blacklisted node
+ /* Immediately shut down any connections we have with the blacklisted node.
+ * We can't call terminate_connection(), because we might be called from a callback function.
+ */
for list_each(connection_t, c, mesh->connections) {
if(c->node == n) {
- terminate_connection(mesh, c, c->status.active);
+ shutdown(c->socket, SHUT_RDWR);
}
}
n->status.udp_confirmed = false;
if(n->status.reachable) {
- update_node_status(mesh, n);
+ n->last_unreachable = mesh->loop.now.tv_sec;
+ }
+
+ /* Graph updates will suppress status updates for blacklisted nodes, so we need to
+ * manually call the status callback if necessary.
+ */
+ if(n->status.reachable && mesh->node_status_cb) {
+ mesh->node_status_cb(mesh, (meshlink_node_t *)n, false);
}
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ return node_write_config(mesh, n) && config_sync(mesh, "current");
}
-void meshlink_whitelist(meshlink_handle_t *mesh, meshlink_node_t *node) {
+bool meshlink_blacklist(meshlink_handle_t *mesh, meshlink_node_t *node) {
if(!mesh || !node) {
meshlink_errno = MESHLINK_EINVAL;
- return;
+ return false;
}
- pthread_mutex_lock(&(mesh->mesh_mutex));
+ pthread_mutex_lock(&mesh->mutex);
- node_t *n = (node_t *)node;
+ if(!blacklist(mesh, (node_t *)node)) {
+ pthread_mutex_unlock(&mesh->mutex);
+ return false;
+ }
- if(!n->status.blacklisted) {
- logger(mesh, MESHLINK_DEBUG, "Node %s was already whitelisted\n", node->name);
+ pthread_mutex_unlock(&mesh->mutex);
+
+ logger(mesh, MESHLINK_DEBUG, "Blacklisted %s.\n", node->name);
+ return true;
+}
+
+bool meshlink_blacklist_by_name(meshlink_handle_t *mesh, const char *name) {
+ if(!mesh || !name) {
meshlink_errno = MESHLINK_EINVAL;
- pthread_mutex_unlock(&(mesh->mesh_mutex));
- return;
+ return false;
+ }
+
+ pthread_mutex_lock(&mesh->mutex);
+
+ node_t *n = lookup_node(mesh, (char *)name);
+
+ if(!n) {
+ n = new_node();
+ n->name = xstrdup(name);
+ node_add(mesh, n);
+ }
+
+ if(!blacklist(mesh, (node_t *)n)) {
+ pthread_mutex_unlock(&mesh->mutex);
+ return false;
+ }
+
+ pthread_mutex_unlock(&mesh->mutex);
+
+ logger(mesh, MESHLINK_DEBUG, "Blacklisted %s.\n", name);
+ return true;
+}
+
+static bool whitelist(meshlink_handle_t *mesh, node_t *n) {
+ if(n == mesh->self) {
+ logger(mesh, MESHLINK_ERROR, "%s whitelisting itself?\n", n->name);
+ meshlink_errno = MESHLINK_EINVAL;
+ return false;
+ }
+
+ if(!n->status.blacklisted) {
+ logger(mesh, MESHLINK_DEBUG, "Node %s was already whitelisted\n", n->name);
+ return true;
}
n->status.blacklisted = false;
- node_write_config(mesh, n);
- config_sync(mesh, "current");
if(n->status.reachable) {
+ n->last_reachable = mesh->loop.now.tv_sec;
update_node_status(mesh, n);
}
- pthread_mutex_unlock(&(mesh->mesh_mutex));
- return;
+ return node_write_config(mesh, n) && config_sync(mesh, "current");
+}
+
+bool meshlink_whitelist(meshlink_handle_t *mesh, meshlink_node_t *node) {
+ if(!mesh || !node) {
+ meshlink_errno = MESHLINK_EINVAL;
+ return false;
+ }
+
+ pthread_mutex_lock(&mesh->mutex);
+
+ if(!whitelist(mesh, (node_t *)node)) {
+ pthread_mutex_unlock(&mesh->mutex);
+ return false;
+ }
+
+ pthread_mutex_unlock(&mesh->mutex);
+
+ logger(mesh, MESHLINK_DEBUG, "Whitelisted %s.\n", node->name);
+ return true;
+}
+
+bool meshlink_whitelist_by_name(meshlink_handle_t *mesh, const char *name) {
+ if(!mesh || !name) {
+ meshlink_errno = MESHLINK_EINVAL;
+ return false;
+ }
+
+ pthread_mutex_lock(&mesh->mutex);
+
+ node_t *n = lookup_node(mesh, (char *)name);
+
+ if(!n) {
+ n = new_node();
+ n->name = xstrdup(name);
+ node_add(mesh, n);
+ }
+
+ if(!whitelist(mesh, (node_t *)n)) {
+ pthread_mutex_unlock(&mesh->mutex);
+ return false;
+ }
+
+ pthread_mutex_unlock(&mesh->mutex);
+
+ logger(mesh, MESHLINK_DEBUG, "Whitelisted %s.\n", name);
+ return true;
}
void meshlink_set_default_blacklist(meshlink_handle_t *mesh, bool blacklist) {
mesh->default_blacklist = blacklist;
}
+bool meshlink_forget_node(meshlink_handle_t *mesh, meshlink_node_t *node) {
+ if(!mesh || !node) {
+ meshlink_errno = MESHLINK_EINVAL;
+ return false;
+ }
+
+ node_t *n = (node_t *)node;
+
+ pthread_mutex_lock(&mesh->mutex);
+
+ /* Check that the node is not reachable */
+ if(n->status.reachable || n->connection) {
+ pthread_mutex_unlock(&mesh->mutex);
+ logger(mesh, MESHLINK_WARNING, "Could not forget %s: still reachable", n->name);
+ return false;
+ }
+
+ /* Check that we don't have any active UTCP connections */
+ if(n->utcp && utcp_is_active(n->utcp)) {
+ pthread_mutex_unlock(&mesh->mutex);
+ logger(mesh, MESHLINK_WARNING, "Could not forget %s: active UTCP connections", n->name);
+ return false;
+ }
+
+ /* Check that we have no active connections to this node */
+ for list_each(connection_t, c, mesh->connections) {
+ if(c->node == n) {
+ pthread_mutex_unlock(&mesh->mutex);
+ logger(mesh, MESHLINK_WARNING, "Could not forget %s: active connection", n->name);
+ return false;
+ }
+ }
+
+ /* Remove any pending outgoings to this node */
+ if(mesh->outgoings) {
+ for list_each(outgoing_t, outgoing, mesh->outgoings) {
+ if(outgoing->node == n) {
+ list_delete_node(mesh->outgoings, node);
+ }
+ }
+ }
+
+ /* Delete the config file for this node */
+ if(!config_delete(mesh, "current", n->name)) {
+ pthread_mutex_unlock(&mesh->mutex);
+ return false;
+ }
+
+ /* Delete the node struct and any remaining edges referencing this node */
+ node_del(mesh, n);
+
+ pthread_mutex_unlock(&mesh->mutex);
+
+ return config_sync(mesh, "current");
+}
+
/* Hint that a hostname may be found at an address
* See header file for detailed comment.
*/
return;
}
- pthread_mutex_lock(&(mesh->mesh_mutex));
+ pthread_mutex_lock(&mesh->mutex);
node_t *n = (node_t *)node;
- memmove(n->recent + 1, n->recent, 4 * sizeof(*n->recent));
- memcpy(n->recent, addr, SALEN(*addr));
- node_write_config(mesh, n);
- pthread_mutex_unlock(&(mesh->mesh_mutex));
+ if(node_add_recent_address(mesh, n, (sockaddr_t *)addr)) {
+ if(!node_write_config(mesh, n)) {
+ logger(mesh, MESHLINK_DEBUG, "Could not update %s\n", n->name);
+ }
+ }
+
+ pthread_mutex_unlock(&mesh->mutex);
// @TODO do we want to fire off a connection attempt right away?
}
}
void meshlink_set_channel_poll_cb(meshlink_handle_t *mesh, meshlink_channel_t *channel, meshlink_channel_poll_cb_t cb) {
- (void)mesh;
+ if(!mesh || !channel) {
+ meshlink_errno = MESHLINK_EINVAL;
+ return;
+ }
+
+ pthread_mutex_lock(&mesh->mutex);
channel->poll_cb = cb;
utcp_set_poll_cb(channel->c, (cb || channel->aio_send) ? channel_poll : NULL);
+ pthread_mutex_unlock(&mesh->mutex);
}
void meshlink_set_channel_accept_cb(meshlink_handle_t *mesh, meshlink_channel_accept_cb_t cb) {
return;
}
- pthread_mutex_lock(&mesh->mesh_mutex);
+ pthread_mutex_lock(&mesh->mutex);
mesh->channel_accept_cb = cb;
mesh->receive_cb = channel_receive;
}
}
- pthread_mutex_unlock(&mesh->mesh_mutex);
+ pthread_mutex_unlock(&mesh->mutex);
}
void meshlink_set_channel_sndbuf(meshlink_handle_t *mesh, meshlink_channel_t *channel, size_t size) {
return;
}
- pthread_mutex_lock(&mesh->mesh_mutex);
+ pthread_mutex_lock(&mesh->mutex);
utcp_set_sndbuf(channel->c, size);
- pthread_mutex_unlock(&mesh->mesh_mutex);
+ pthread_mutex_unlock(&mesh->mutex);
}
void meshlink_set_channel_rcvbuf(meshlink_handle_t *mesh, meshlink_channel_t *channel, size_t size) {
return;
}
- pthread_mutex_lock(&mesh->mesh_mutex);
+ pthread_mutex_lock(&mesh->mutex);
utcp_set_rcvbuf(channel->c, size);
- pthread_mutex_unlock(&mesh->mesh_mutex);
+ pthread_mutex_unlock(&mesh->mutex);
}
meshlink_channel_t *meshlink_channel_open_ex(meshlink_handle_t *mesh, meshlink_node_t *node, uint16_t port, meshlink_channel_receive_cb_t cb, const void *data, size_t len, uint32_t flags) {
- if(data || len) {
+ if(data && len) {
abort(); // TODO: handle non-NULL data
}
return NULL;
}
+ pthread_mutex_lock(&mesh->mutex);
+
node_t *n = (node_t *)node;
if(!n->utcp) {
if(!n->utcp) {
meshlink_errno = errno == ENOMEM ? MESHLINK_ENOMEM : MESHLINK_EINTERNAL;
+ pthread_mutex_unlock(&mesh->mutex);
return NULL;
}
}
if(n->status.blacklisted) {
logger(mesh, MESHLINK_ERROR, "Cannot open a channel with blacklisted node\n");
+ meshlink_errno = MESHLINK_EBLACKLISTED;
+ pthread_mutex_unlock(&mesh->mutex);
return NULL;
}
meshlink_channel_t *channel = xzalloc(sizeof(*channel));
channel->node = n;
channel->receive_cb = cb;
+
+ if(data && !len) {
+ channel->priv = (void *)data;
+ }
+
channel->c = utcp_connect_ex(n->utcp, port, channel_recv, channel, flags);
+ pthread_mutex_unlock(&mesh->mutex);
+
if(!channel->c) {
meshlink_errno = errno == ENOMEM ? MESHLINK_ENOMEM : MESHLINK_EINTERNAL;
free(channel);
return;
}
- pthread_mutex_lock(&mesh->mesh_mutex);
+ pthread_mutex_lock(&mesh->mutex);
utcp_shutdown(channel->c, direction);
- pthread_mutex_unlock(&mesh->mesh_mutex);
+ pthread_mutex_unlock(&mesh->mutex);
}
void meshlink_channel_close(meshlink_handle_t *mesh, meshlink_channel_t *channel) {
return;
}
- pthread_mutex_lock(&mesh->mesh_mutex);
+ pthread_mutex_lock(&mesh->mutex);
utcp_close(channel->c);
free(aio);
}
- pthread_mutex_unlock(&mesh->mesh_mutex);
+ pthread_mutex_unlock(&mesh->mutex);
free(channel);
}
ssize_t retval;
- pthread_mutex_lock(&mesh->mesh_mutex);
+ pthread_mutex_lock(&mesh->mutex);
/* Disallow direct calls to utcp_send() while we still have AIO active. */
if(channel->aio_send) {
retval = utcp_send(channel->c, data, len);
}
- pthread_mutex_unlock(&mesh->mesh_mutex);
+ pthread_mutex_unlock(&mesh->mutex);
if(retval < 0) {
meshlink_errno = MESHLINK_ENETWORK;
aio->cb.buffer = cb;
aio->priv = priv;
- pthread_mutex_lock(&mesh->mesh_mutex);
+ pthread_mutex_lock(&mesh->mutex);
/* Append the AIO buffer descriptor to the end of the chain */
meshlink_aio_buffer_t **p = &channel->aio_send;
utcp_set_poll_cb(channel->c, channel_poll);
channel_poll(channel->c, len);
- pthread_mutex_unlock(&mesh->mesh_mutex);
+ pthread_mutex_unlock(&mesh->mutex);
return true;
}
aio->cb.fd = cb;
aio->priv = priv;
- pthread_mutex_lock(&mesh->mesh_mutex);
+ pthread_mutex_lock(&mesh->mutex);
/* Append the AIO buffer descriptor to the end of the chain */
meshlink_aio_buffer_t **p = &channel->aio_send;
utcp_set_poll_cb(channel->c, channel_poll);
channel_poll(channel->c, len);
- pthread_mutex_unlock(&mesh->mesh_mutex);
+ pthread_mutex_unlock(&mesh->mutex);
return true;
}
aio->cb.buffer = cb;
aio->priv = priv;
- pthread_mutex_lock(&mesh->mesh_mutex);
+ pthread_mutex_lock(&mesh->mutex);
/* Append the AIO buffer descriptor to the end of the chain */
meshlink_aio_buffer_t **p = &channel->aio_receive;
*p = aio;
- pthread_mutex_unlock(&mesh->mesh_mutex);
+ pthread_mutex_unlock(&mesh->mutex);
return true;
}
aio->cb.fd = cb;
aio->priv = priv;
- pthread_mutex_lock(&mesh->mesh_mutex);
+ pthread_mutex_lock(&mesh->mutex);
/* Append the AIO buffer descriptor to the end of the chain */
meshlink_aio_buffer_t **p = &channel->aio_receive;
*p = aio;
- pthread_mutex_unlock(&mesh->mesh_mutex);
+ pthread_mutex_unlock(&mesh->mutex);
return true;
}
return utcp_get_recvq(channel->c);
}
+void meshlink_set_node_channel_timeout(meshlink_handle_t *mesh, meshlink_node_t *node, int timeout) {
+ if(!mesh || !node) {
+ meshlink_errno = MESHLINK_EINVAL;
+ return;
+ }
+
+ node_t *n = (node_t *)node;
+
+ pthread_mutex_lock(&mesh->mutex);
+
+ if(!n->utcp) {
+ n->utcp = utcp_init(channel_accept, channel_pre_accept, channel_send, n);
+ }
+
+ utcp_set_user_timeout(n->utcp, timeout);
+
+ pthread_mutex_unlock(&mesh->mutex);
+}
+
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);
return;
}
- pthread_mutex_lock(&mesh->mesh_mutex);
+ pthread_mutex_lock(&mesh->mutex);
if(mesh->discovery == enable) {
goto end;
mesh->discovery = enable;
end:
- pthread_mutex_unlock(&mesh->mesh_mutex);
+ pthread_mutex_unlock(&mesh->mutex);
#else
(void)mesh;
(void)enable;
return;
}
- pthread_mutex_lock(&mesh->mesh_mutex);
+ pthread_mutex_lock(&mesh->mutex);
mesh->dev_class_traits[devclass].pinginterval = pinginterval;
mesh->dev_class_traits[devclass].pingtimeout = pingtimeout;
- pthread_mutex_unlock(&mesh->mesh_mutex);
+ pthread_mutex_unlock(&mesh->mutex);
+}
+
+void meshlink_set_dev_class_fast_retry_period(meshlink_handle_t *mesh, dev_class_t devclass, int fast_retry_period) {
+ if(!mesh || devclass < 0 || devclass >= DEV_CLASS_COUNT) {
+ meshlink_errno = EINVAL;
+ return;
+ }
+
+ if(fast_retry_period < 0) {
+ meshlink_errno = EINVAL;
+ return;
+ }
+
+ pthread_mutex_lock(&mesh->mutex);
+ mesh->dev_class_traits[devclass].fast_retry_period = fast_retry_period;
+ pthread_mutex_unlock(&mesh->mutex);
}
void handle_network_change(meshlink_handle_t *mesh, bool online) {
(void)online;
- if(!mesh->connections) {
+ if(!mesh->connections || !mesh->loop.running) {
return;
}
retry(mesh);
}
+void call_error_cb(meshlink_handle_t *mesh, meshlink_errno_t meshlink_errno) {
+ // We should only call the callback function if we are in the background thread.
+ if(!mesh->error_cb) {
+ return;
+ }
+
+ if(!mesh->threadstarted) {
+ return;
+ }
+
+ if(mesh->thread == pthread_self()) {
+ mesh->error_cb(mesh, meshlink_errno);
+ }
+}
+
+
static void __attribute__((constructor)) meshlink_init(void) {
crypto_init();
- unsigned int seed;
- randomize(&seed, sizeof(seed));
- srand(seed);
}
static void __attribute__((destructor)) meshlink_exit(void) {
projects / meshlink / blobdiff