#include "xalloc.h"
#include "ed25519/sha512.h"
-static bool send_proxyrequest(connection_t *c) {
+#include <assert.h>
+
+extern bool node_write_devclass(meshlink_handle_t *mesh, node_t *n);
+
+static bool send_proxyrequest(meshlink_handle_t *mesh, connection_t *c) {
switch(mesh->proxytype) {
- case PROXY_HTTP: {
- char *host;
- char *port;
-
- sockaddr2str(&c->address, &host, &port);
- send_request(c, "CONNECT %s:%s HTTP/1.1\r\n\r", host, port);
- free(host);
- free(port);
- return true;
- }
- case PROXY_SOCKS4: {
- if(c->address.sa.sa_family != AF_INET) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Cannot connect to an IPv6 host through a SOCKS 4 proxy!");
- return false;
- }
- char s4req[9 + (mesh->proxyuser ? strlen(mesh->proxyuser) : 0)];
- s4req[0] = 4;
- s4req[1] = 1;
- memcpy(s4req + 2, &c->address.in.sin_port, 2);
- memcpy(s4req + 4, &c->address.in.sin_addr, 4);
- if(mesh->proxyuser)
- memcpy(s4req + 8, mesh->proxyuser, strlen(mesh->proxyuser));
- s4req[sizeof s4req - 1] = 0;
- c->tcplen = 8;
- return send_meta(c, s4req, sizeof s4req);
+ case PROXY_HTTP: {
+ char *host;
+ char *port;
+
+ sockaddr2str(&c->address, &host, &port);
+ send_request(mesh, c, "CONNECT %s:%s HTTP/1.1\r\n\r", host, port);
+ free(host);
+ free(port);
+ return true;
+ }
+ case PROXY_SOCKS4: {
+ if(c->address.sa.sa_family != AF_INET) {
+ logger(mesh, MESHLINK_ERROR, "Cannot connect to an IPv6 host through a SOCKS 4 proxy!");
+ return false;
}
- case PROXY_SOCKS5: {
- int len = 3 + 6 + (c->address.sa.sa_family == AF_INET ? 4 : 16);
- c->tcplen = 2;
- if(mesh->proxypass)
- len += 3 + strlen(mesh->proxyuser) + strlen(mesh->proxypass);
- char s5req[len];
- int i = 0;
- s5req[i++] = 5;
- s5req[i++] = 1;
- if(mesh->proxypass) {
- s5req[i++] = 2;
- s5req[i++] = 1;
- s5req[i++] = strlen(mesh->proxyuser);
- memcpy(s5req + i, mesh->proxyuser, strlen(mesh->proxyuser));
- i += strlen(mesh->proxyuser);
- s5req[i++] = strlen(mesh->proxypass);
- memcpy(s5req + i, mesh->proxypass, strlen(mesh->proxypass));
- i += strlen(mesh->proxypass);
- c->tcplen += 2;
- } else {
- s5req[i++] = 0;
- }
- s5req[i++] = 5;
+ char s4req[9 + (mesh->proxyuser ? strlen(mesh->proxyuser) : 0)];
+ s4req[0] = 4;
+ s4req[1] = 1;
+ memcpy(s4req + 2, &c->address.in.sin_port, 2);
+ memcpy(s4req + 4, &c->address.in.sin_addr, 4);
+ if(mesh->proxyuser)
+ memcpy(s4req + 8, mesh->proxyuser, strlen(mesh->proxyuser));
+ s4req[sizeof s4req - 1] = 0;
+ c->tcplen = 8;
+ return send_meta(mesh, c, s4req, sizeof s4req);
+ }
+ case PROXY_SOCKS5: {
+ int len = 3 + 6 + (c->address.sa.sa_family == AF_INET ? 4 : 16);
+ c->tcplen = 2;
+ if(mesh->proxypass)
+ len += 3 + strlen(mesh->proxyuser) + strlen(mesh->proxypass);
+ char s5req[len];
+ int i = 0;
+ s5req[i++] = 5;
+ s5req[i++] = 1;
+ if(mesh->proxypass) {
+ s5req[i++] = 2;
s5req[i++] = 1;
+ s5req[i++] = strlen(mesh->proxyuser);
+ memcpy(s5req + i, mesh->proxyuser, strlen(mesh->proxyuser));
+ i += strlen(mesh->proxyuser);
+ s5req[i++] = strlen(mesh->proxypass);
+ memcpy(s5req + i, mesh->proxypass, strlen(mesh->proxypass));
+ i += strlen(mesh->proxypass);
+ c->tcplen += 2;
+ } else
s5req[i++] = 0;
- if(c->address.sa.sa_family == AF_INET) {
- s5req[i++] = 1;
- memcpy(s5req + i, &c->address.in.sin_addr, 4);
- i += 4;
- memcpy(s5req + i, &c->address.in.sin_port, 2);
- i += 2;
- c->tcplen += 10;
- } else if(c->address.sa.sa_family == AF_INET6) {
- s5req[i++] = 3;
- memcpy(s5req + i, &c->address.in6.sin6_addr, 16);
- i += 16;
- memcpy(s5req + i, &c->address.in6.sin6_port, 2);
- i += 2;
- c->tcplen += 22;
- } else {
- logger(DEBUG_ALWAYS, LOG_ERR, "Address family %hx not supported for SOCKS 5 proxies!", c->address.sa.sa_family);
- return false;
- }
- if(i > len)
- abort();
- return send_meta(c, s5req, sizeof s5req);
- }
- case PROXY_SOCKS4A:
- logger(DEBUG_ALWAYS, LOG_ERR, "Proxy type not implemented yet");
- return false;
- case PROXY_EXEC:
- return true;
- default:
- logger(DEBUG_ALWAYS, LOG_ERR, "Unknown proxy type");
+ s5req[i++] = 5;
+ s5req[i++] = 1;
+ s5req[i++] = 0;
+ if(c->address.sa.sa_family == AF_INET) {
+ s5req[i++] = 1;
+ memcpy(s5req + i, &c->address.in.sin_addr, 4);
+ i += 4;
+ memcpy(s5req + i, &c->address.in.sin_port, 2);
+ i += 2;
+ c->tcplen += 10;
+ } else if(c->address.sa.sa_family == AF_INET6) {
+ s5req[i++] = 3;
+ memcpy(s5req + i, &c->address.in6.sin6_addr, 16);
+ i += 16;
+ memcpy(s5req + i, &c->address.in6.sin6_port, 2);
+ i += 2;
+ c->tcplen += 22;
+ } else {
+ logger(mesh, MESHLINK_ERROR, "Address family %hx not supported for SOCKS 5 proxies!", c->address.sa.sa_family);
return false;
+ }
+ if(i > len)
+ abort();
+ return send_meta(mesh, c, s5req, sizeof s5req);
+ }
+ case PROXY_SOCKS4A:
+ logger(mesh, MESHLINK_ERROR, "Proxy type not implemented yet");
+ return false;
+ case PROXY_EXEC:
+ return true;
+ default:
+ logger(mesh, MESHLINK_ERROR, "Unknown proxy type");
+ return false;
}
}
-bool send_id(connection_t *c) {
- gettimeofday(&c->start, NULL);
+bool send_id(meshlink_handle_t *mesh, connection_t *c) {
int minor = mesh->self->connection->protocol_minor;
if(mesh->proxytype && c->outgoing)
- if(!send_proxyrequest(c))
+ if(!send_proxyrequest(mesh, c))
return false;
- return send_request(c, "%d %s %d.%d", ID, mesh->self->connection->name, mesh->self->connection->protocol_major, minor);
+ return send_request(mesh, c, "%d %s %d.%d", ID, mesh->self->connection->name, mesh->self->connection->protocol_major, minor);
}
-static bool finalize_invitation(connection_t *c, const char *data, uint16_t len) {
+static bool finalize_invitation(meshlink_handle_t *mesh, connection_t *c, const void *data, uint16_t len) {
if(strchr(data, '\n')) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Received invalid key from invited node %s (%s)!\n", c->name, c->hostname);
+ logger(mesh, MESHLINK_ERROR, "Received invalid key from invited node %s (%s)!\n", c->name, c->hostname);
return false;
}
char filename[PATH_MAX];
snprintf(filename, sizeof filename, "%s" SLASH "hosts" SLASH "%s", mesh->confbase, c->name);
if(!access(filename, F_OK)) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Host config file for %s (%s) already exists!\n", c->name, c->hostname);
+ logger(mesh, MESHLINK_ERROR, "Host config file for %s (%s) already exists!\n", c->name, c->hostname);
return false;
}
FILE *f = fopen(filename, "w");
if(!f) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Error trying to create %s: %s\n", filename, strerror(errno));
+ logger(mesh, MESHLINK_ERROR, "Error trying to create %s: %s\n", filename, strerror(errno));
return false;
}
- fprintf(f, "ECDSAPublicKey = %s\n", data);
+ fprintf(f, "ECDSAPublicKey = %s\n", (const char *)data);
fclose(f);
- logger(DEBUG_CONNECTIONS, LOG_INFO, "Key succesfully received from %s (%s)", c->name, c->hostname);
+ logger(mesh, MESHLINK_INFO, "Key succesfully received from %s (%s)", c->name, c->hostname);
//TODO: callback to application to inform of an accepted invitation
sptps_send_record(&c->sptps, 2, data, 0);
+
+ load_all_nodes(mesh);
+
return true;
}
-static bool receive_invitation_sptps(void *handle, uint8_t type, const char *data, uint16_t len) {
+static bool receive_invitation_sptps(void *handle, uint8_t type, const void *data, uint16_t len) {
connection_t *c = handle;
+ meshlink_handle_t *mesh = c->mesh;
if(type == 128)
return true;
if(type == 1 && c->status.invitation_used)
- return finalize_invitation(c, data, len);
+ return finalize_invitation(mesh, c, data, len);
if(type != 0 || len != 18 || c->status.invitation_used)
return false;
// Atomically rename the invitation file
if(rename(filename, usedname)) {
if(errno == ENOENT)
- logger(DEBUG_ALWAYS, LOG_ERR, "Peer %s tried to use non-existing invitation %s\n", c->hostname, cookie);
+ logger(mesh, MESHLINK_ERROR, "Peer %s tried to use non-existing invitation %s\n", c->hostname, cookie);
else
- logger(DEBUG_ALWAYS, LOG_ERR, "Error trying to rename invitation %s\n", cookie);
+ logger(mesh, MESHLINK_ERROR, "Error trying to rename invitation %s\n", cookie);
return false;
}
// Open the renamed file
FILE *f = fopen(usedname, "r");
if(!f) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Error trying to open invitation %s\n", cookie);
+ logger(mesh, MESHLINK_ERROR, "Error trying to open invitation %s\n", cookie);
return false;
}
buf[len] = 0;
if(!*buf || !*name || strcasecmp(buf, "Name") || !check_id(name)) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Invalid invitation file %s\n", cookie);
+ logger(mesh, MESHLINK_ERROR, "Invalid invitation file %s\n", cookie);
fclose(f);
return false;
}
c->status.invitation_used = true;
- logger(DEBUG_CONNECTIONS, LOG_INFO, "Invitation %s succesfully sent to %s (%s)", cookie, c->name, c->hostname);
+ logger(mesh, MESHLINK_INFO, "Invitation %s succesfully sent to %s (%s)", cookie, c->name, c->hostname);
return true;
}
-bool id_h(connection_t *c, const char *request) {
+bool id_h(meshlink_handle_t *mesh, connection_t *c, const char *request) {
char name[MAX_STRING_SIZE];
if(sscanf(request, "%*d " MAX_STRING " %d.%d", name, &c->protocol_major, &c->protocol_minor) < 2) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Got bad %s from %s (%s)", "ID", c->name,
- c->hostname);
+ logger(mesh, MESHLINK_ERROR, "Got bad %s from %s (%s)", "ID", c->name,
+ c->hostname);
return false;
}
if(name[0] == '?') {
if(!mesh->invitation_key) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Got invitation from %s but we don't have an invitation key", c->hostname);
+ logger(mesh, MESHLINK_ERROR, "Got invitation from %s but we don't have an invitation key", c->hostname);
return false;
}
c->ecdsa = ecdsa_set_base64_public_key(name + 1);
if(!c->ecdsa) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Got bad invitation from %s", c->hostname);
+ logger(mesh, MESHLINK_ERROR, "Got bad invitation from %s", c->hostname);
return false;
}
char *mykey = ecdsa_get_base64_public_key(mesh->invitation_key);
if(!mykey)
return false;
- if(!send_request(c, "%d %s", ACK, mykey))
+ if(!send_request(mesh, c, "%d %s", ACK, mykey))
return false;
free(mykey);
c->protocol_minor = 2;
+ c->allow_request = 1;
- return sptps_start(&c->sptps, c, false, false, mesh->invitation_key, c->ecdsa, "tinc invitation", 15, send_meta_sptps, receive_invitation_sptps);
+ return sptps_start(&c->sptps, c, false, false, mesh->invitation_key, c->ecdsa, meshlink_invitation_label, sizeof meshlink_invitation_label, send_meta_sptps, receive_invitation_sptps);
}
/* Check if identity is a valid name */
if(!check_id(name)) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Got bad %s from %s (%s): %s", "ID", c->name,
- c->hostname, "invalid name");
+ logger(mesh, MESHLINK_ERROR, "Got bad %s from %s (%s): %s", "ID", c->name,
+ c->hostname, "invalid name");
return false;
}
if(c->outgoing) {
if(strcmp(c->name, name)) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Peer %s is %s instead of %s", c->hostname, name,
- c->name);
+ logger(mesh, MESHLINK_ERROR, "Peer %s is %s instead of %s", c->hostname, name,
+ c->name);
return false;
}
} else {
/* Check if version matches */
if(c->protocol_major != mesh->self->connection->protocol_major) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Peer %s (%s) uses incompatible version %d.%d",
- c->name, c->hostname, c->protocol_major, c->protocol_minor);
+ logger(mesh, MESHLINK_ERROR, "Peer %s (%s) uses incompatible version %d.%d",
+ c->name, c->hostname, c->protocol_major, c->protocol_minor);
return false;
}
if(!c->config_tree) {
init_configuration(&c->config_tree);
- if(!read_host_config(c->config_tree, c->name)) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Peer %s had unknown identity (%s)", c->hostname, c->name);
+ if(!read_host_config(mesh, c->config_tree, c->name)) {
+ logger(mesh, MESHLINK_ERROR, "Peer %s had unknown identity (%s)", c->hostname, c->name);
return false;
}
+ }
- read_ecdsa_public_key(c);
- } else {
- if(c->protocol_minor && !ecdsa_active(c->ecdsa))
- c->protocol_minor = 1;
+ read_ecdsa_public_key(mesh, c);
+
+ if(!ecdsa_active(c->ecdsa)) {
+ logger(mesh, MESHLINK_ERROR, "No key known for peer %s (%s)", c->name, c->hostname);
+
+ node_t *n = lookup_node(mesh, c->name);
+ if(n && !n->status.waitingforkey) {
+ logger(mesh, MESHLINK_INFO, "Requesting key from peer %s (%s)", c->name, c->hostname);
+ send_req_key(mesh, n);
+ }
+
+ return false;
}
/* Forbid version rollback for nodes whose ECDSA key we know */
if(ecdsa_active(c->ecdsa) && c->protocol_minor < 2) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Peer %s (%s) tries to roll back protocol version to %d.%d",
- c->name, c->hostname, c->protocol_major, c->protocol_minor);
+ logger(mesh, MESHLINK_ERROR, "Peer %s (%s) tries to roll back protocol version to %d.%d",
+ c->name, c->hostname, c->protocol_major, c->protocol_minor);
return false;
}
c->allow_request = ACK;
- char label[25 + strlen(mesh->self->name) + strlen(c->name)];
+ char label[sizeof meshlink_tcp_label + strlen(mesh->self->name) + strlen(c->name) + 2];
if(c->outgoing)
- snprintf(label, sizeof label, "tinc TCP key expansion %s %s", mesh->self->name, c->name);
+ snprintf(label, sizeof label, "%s %s %s", meshlink_tcp_label, mesh->self->name, c->name);
else
- snprintf(label, sizeof label, "tinc TCP key expansion %s %s", c->name, mesh->self->name);
+ snprintf(label, sizeof label, "%s %s %s", meshlink_tcp_label, c->name, mesh->self->name);
- return sptps_start(&c->sptps, c, c->outgoing, false, mesh->self->connection->ecdsa, c->ecdsa, label, sizeof label, send_meta_sptps, receive_meta_sptps);
+ return sptps_start(&c->sptps, c, c->outgoing, false, mesh->self->connection->ecdsa, c->ecdsa, label, sizeof label - 1, send_meta_sptps, receive_meta_sptps);
}
-bool send_ack(connection_t *c) {
- /* ACK message contains rest of the information the other end needs
- to create node_t and edge_t structures. */
-
- struct timeval now;
- bool choice;
-
- /* Estimate weight */
-
- gettimeofday(&now, NULL);
- c->estimated_weight = (now.tv_sec - c->start.tv_sec) * 1000 + (now.tv_usec - c->start.tv_usec) / 1000;
+bool send_ack(meshlink_handle_t *mesh, connection_t *c) {
/* Check some options */
if(mesh->self->options & OPTION_PMTU_DISCOVERY)
c->options |= OPTION_PMTU_DISCOVERY;
- return send_request(c, "%d %s %d %x", ACK, mesh->myport, c->estimated_weight, (c->options & 0xffffff) | (PROT_MINOR << 24));
+ return send_request(mesh, c, "%d %s %d %x", ACK, mesh->myport, mesh->devclass, (c->options & 0xffffff) | (PROT_MINOR << 24));
}
-static void send_everything(connection_t *c) {
+static void send_everything(meshlink_handle_t *mesh, connection_t *c) {
/* Send all known subnets and edges */
for splay_each(node_t, n, mesh->nodes) {
for splay_each(edge_t, e, n->edge_tree)
- send_add_edge(c, e);
+ send_add_edge(mesh, c, e);
}
}
-bool ack_h(connection_t *c, const char *request) {
+bool ack_h(meshlink_handle_t *mesh, connection_t *c, const char *request) {
char hisport[MAX_STRING_SIZE];
char *hisaddress;
- int weight, mtu;
+ int devclass;
uint32_t options;
node_t *n;
- bool choice;
- if(sscanf(request, "%*d " MAX_STRING " %d %x", hisport, &weight, &options) != 3) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Got bad %s from %s (%s)", "ACK", c->name,
- c->hostname);
+ if(sscanf(request, "%*d " MAX_STRING " %d %x", hisport, &devclass, &options) != 3) {
+ logger(mesh, MESHLINK_ERROR, "Got bad %s from %s (%s)", "ACK", c->name,
+ c->hostname);
+ return false;
+ }
+
+ if(devclass < 0 || devclass > _DEV_CLASS_MAX) {
+ logger(mesh, MESHLINK_ERROR, "Got bad %s from %s (%s): %s", "ACK", c->name,
+ c->hostname, "devclass invalid");
return false;
}
/* Check if we already have a node_t for him */
- n = lookup_node(c->name);
+ n = lookup_node(mesh, c->name);
if(!n) {
n = new_node();
n->name = xstrdup(c->name);
- node_add(n);
+ node_add(mesh, n);
} else {
if(n->connection) {
/* Oh dear, we already have a connection to this node. */
- logger(DEBUG_CONNECTIONS, LOG_DEBUG, "Established a second connection with %s (%s), closing old connection", n->connection->name, n->connection->hostname);
+ logger(mesh, MESHLINK_DEBUG, "Established a second connection with %s (%s), closing old connection", n->connection->name, n->connection->hostname);
if(n->connection->outgoing) {
if(c->outgoing)
- logger(DEBUG_ALWAYS, LOG_WARNING, "Two outgoing connections to the same node!");
+ logger(mesh, MESHLINK_WARNING, "Two outgoing connections to the same node!");
else
c->outgoing = n->connection->outgoing;
n->connection->outgoing = NULL;
}
- terminate_connection(n->connection, false);
+ terminate_connection(mesh, n->connection, false);
/* Run graph algorithm to keep things in sync */
- graph();
+ graph(mesh);
}
}
+ n->devclass = devclass;
+ node_write_devclass(mesh, n);
+
+ n->last_successfull_connection = time(NULL);
+
n->connection = c;
c->node = n;
if(!(c->options & options & OPTION_PMTU_DISCOVERY)) {
c->allow_request = ALL;
c->status.active = true;
- logger(DEBUG_CONNECTIONS, LOG_NOTICE, "Connection with %s (%s) activated", c->name,
- c->hostname);
+ logger(mesh, MESHLINK_INFO, "Connection with %s (%s) activated", c->name,
+ c->hostname);
/* Send him everything we know */
- send_everything(c);
+ send_everything(mesh, c);
/* Create an edge_t for this connection */
+ assert(devclass >= 0 && devclass <= _DEV_CLASS_MAX);
+
c->edge = new_edge();
c->edge->from = mesh->self;
c->edge->to = n;
sockaddr2str(&c->address, &hisaddress, NULL);
c->edge->address = str2sockaddr(hisaddress, hisport);
free(hisaddress);
- c->edge->weight = (weight + c->estimated_weight) / 2;
+ c->edge->weight = dev_class_traits[devclass].edge_weight;
c->edge->connection = c;
c->edge->options = c->options;
- edge_add(c->edge);
+ edge_add(mesh, c->edge);
/* Notify everyone of the new edge */
- send_add_edge(mesh->everyone, c->edge);
+ send_add_edge(mesh, mesh->everyone, c->edge);
/* Run MST and SSSP algorithms */
- graph();
+ graph(mesh);
return true;
}
projects / meshlink / blobdiff