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;
}
+
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)
+
+ 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)
+
+ 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;
memcpy(s5req + i, mesh->proxypass, strlen(mesh->proxypass));
i += strlen(mesh->proxypass);
c->tcplen += 2;
- } else
+ } else {
s5req[i++] = 0;
+ }
+
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);
logger(mesh, MESHLINK_ERROR, "Address family %hx not supported for SOCKS 5 proxies!", c->address.sa.sa_family);
return false;
}
- if(i > len)
+
+ 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;
int minor = mesh->self->connection->protocol_minor;
if(mesh->proxytype && c->outgoing)
- if(!send_proxyrequest(mesh, c))
+ if(!send_proxyrequest(mesh, c)) {
return false;
+ }
return send_request(mesh, c, "%d %s %d.%d", ID, mesh->self->connection->name, mesh->self->connection->protocol_major, minor);
}
static bool finalize_invitation(meshlink_handle_t *mesh, connection_t *c, const void *data, uint16_t len) {
(void)len;
+
if(strchr(data, '\n')) {
logger(mesh, MESHLINK_ERROR, "Received invalid key from invited node %s!\n", c->name);
return false;
// Create a new host config file
char filename[PATH_MAX];
snprintf(filename, sizeof(filename), "%s" SLASH "hosts" SLASH "%s", mesh->confbase, c->name);
+
if(!access(filename, F_OK)) {
logger(mesh, MESHLINK_ERROR, "Host config file for %s already exists!\n", c->name);
return false;
}
FILE *f = fopen(filename, "w");
+
if(!f) {
logger(mesh, MESHLINK_ERROR, "Error trying to create %s: %s\n", filename, strerror(errno));
return false;
connection_t *c = handle;
meshlink_handle_t *mesh = c->mesh;
- if(type == 128)
+ if(type == 128) {
return true;
+ }
- if(type == 1 && c->status.invitation_used)
+ if(type == 1 && c->status.invitation_used) {
return finalize_invitation(mesh, c, data, len);
+ }
- if(type != 0 || len != 18 || c->status.invitation_used)
+ if(type != 0 || len != 18 || c->status.invitation_used) {
return false;
+ }
// Recover the filename from the cookie and the key
char *fingerprint = ecdsa_get_base64_public_key(mesh->invitation_key);
// Atomically rename the invitation file
if(rename(filename, usedname)) {
- if(errno == ENOENT)
+ if(errno == ENOENT) {
logger(mesh, MESHLINK_ERROR, "Peer %s tried to use non-existing invitation %s\n", c->name, cookie);
- else
+ } else {
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(mesh, MESHLINK_ERROR, "Error trying to open invitation %s\n", cookie);
return false;
// Read the new node's Name from the file
char buf[1024];
fgets(buf, sizeof(buf), f);
- if(*buf)
+
+ if(*buf) {
buf[strlen(buf) - 1] = 0;
+ }
len = strcspn(buf, " \t=");
char *name = buf + len;
name += strspn(name, " \t");
+
if(*name == '=') {
name++;
name += strspn(name, " \t");
}
+
buf[len] = 0;
if(!*buf || !*name || strcasecmp(buf, "Name") || !check_id(name)) {
// Send the node the contents of the invitation file
rewind(f);
size_t result;
- while((result = fread(buf, 1, sizeof(buf), f)))
+
+ while((result = fread(buf, 1, sizeof(buf), f))) {
sptps_send_record(&c->sptps, 0, buf, result);
+ }
+
sptps_send_record(&c->sptps, 1, buf, 0);
fclose(f);
unlink(usedname);
}
c->ecdsa = ecdsa_set_base64_public_key(name + 1);
+
if(!c->ecdsa) {
logger(mesh, MESHLINK_ERROR, "Got bad invitation from %s", c->name);
return false;
c->status.invitation = true;
char *mykey = ecdsa_get_base64_public_key(mesh->invitation_key);
- if(!mykey)
+
+ if(!mykey) {
return false;
- if(!send_request(mesh, c, "%d %s", ACK, mykey))
+ }
+
+ if(!send_request(mesh, c, "%d %s", ACK, mykey)) {
return false;
+ }
+
free(mykey);
c->protocol_minor = 2;
return false;
}
} else {
- if(c->name)
+ if(c->name) {
free(c->name);
+ }
+
c->name = xstrdup(name);
}
logger(mesh, MESHLINK_ERROR, "No key known for peer %s", c->name);
node_t *n = lookup_node(mesh, c->name);
+
if(n && !n->status.waitingforkey) {
logger(mesh, MESHLINK_INFO, "Requesting key from peer %s", c->name);
send_req_key(mesh, n);
c->allow_request = ACK;
char label[sizeof(meshlink_tcp_label) + strlen(mesh->self->name) + strlen(c->name) + 2];
- if(c->outgoing)
+ if(c->outgoing) {
snprintf(label, sizeof(label), "%s %s %s", meshlink_tcp_label, mesh->self->name, c->name);
- else
+ } else {
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) - 1, send_meta_sptps, receive_meta_sptps);
}
/* Check some options */
- if(mesh->self->options & OPTION_PMTU_DISCOVERY)
+ if(mesh->self->options & OPTION_PMTU_DISCOVERY) {
c->options |= OPTION_PMTU_DISCOVERY;
+ }
return send_request(mesh, c, "%d %s %d %x", ACK, mesh->myport, mesh->devclass, (c->options & 0xffffff) | (PROT_MINOR << 24));
}
/* Send all known subnets and edges */
for splay_each(node_t, n, mesh->nodes) {
- for splay_each(edge_t, e, n->edge_tree)
+ for splay_each(edge_t, e, n->edge_tree) {
send_add_edge(mesh, c, e);
+ }
}
}
logger(mesh, MESHLINK_DEBUG, "Established a second connection with %s, closing old connection", n->connection->name);
if(n->connection->outgoing) {
- if(c->outgoing)
+ if(c->outgoing) {
logger(mesh, MESHLINK_WARNING, "Two outgoing connections to the same node!");
- else
+ } else {
c->outgoing = n->connection->outgoing;
+ }
n->connection->outgoing = NULL;
}
n->connection = c;
c->node = n;
+
if(!(c->options & options & OPTION_PMTU_DISCOVERY)) {
c->options &= ~OPTION_PMTU_DISCOVERY;
options &= ~OPTION_PMTU_DISCOVERY;
}
+
c->options |= options;
/* Activate this connection */
projects / meshlink / blobdiff