C++ (Cpp) link_key Examples

Example #1

File: link.c Project: fd/telehash-c

link_t link_keys(mesh_t mesh, lob_t keys)
{
  uint8_t csid;

  if(!mesh || !keys) return LOG("invalid args");
  csid = hashname_id(mesh->keys,keys);
  if(!csid) return LOG("no supported key");
  return link_key(mesh, hashname_im(keys,csid));
}

Example #2

File: link.c Project: cfvaughnii/telehash-c

// process an incoming handshake
link_t link_receive_handshake(link_t link, lob_t inner, pipe_t pipe)
{
  link_t ready;
  uint32_t out, err;
  seen_t seen;
  uint8_t csid = 0;
  char *hexid;
  lob_t attached, outer = lob_linked(inner);

  if(!link || !inner || !outer) return LOG("bad args");
  hexid = lob_get(inner, "csid");
  if(!lob_get(link->mesh->keys, hexid)) return LOG("unsupported csid %s",hexid);
  util_unhex(hexid, 2, &csid);
  attached = lob_parse(inner->body, inner->body_len);
  if(!link->key && link_key(link->mesh, attached, csid) != link) return LOG("invalid/mismatch link handshake");
  if((err = e3x_exchange_verify(link->x,outer))) return LOG("handshake verification fail: %d",err);

  out = e3x_exchange_out(link->x,0);
  ready = link_up(link);

  // if bad at, always send current handshake
  if(e3x_exchange_in(link->x, lob_get_uint(inner,"at")) < out)
  {
    LOG("old/bad at: %s (%d,%d,%d)",lob_json(inner),lob_get_int(inner,"at"),e3x_exchange_in(link->x,0),e3x_exchange_out(link->x,0));
    // just reset pipe seen and call link_sync to resend handshake
    for(seen = link->pipes;pipe && seen;seen = seen->next) if(seen->pipe == pipe) seen->at = 0;
    lob_free(link_sync(link));
    return NULL;
  }

  // trust/add this pipe
  if(pipe) link_pipe(link,pipe);

  // try to sync ephemeral key
  if(!e3x_exchange_sync(link->x,outer)) return LOG("sync failed");
  
  // we may need to re-sync
  if(out != e3x_exchange_out(link->x,0)) lob_free(link_sync(link));
  
  // notify of ready state change
  if(!ready && link_up(link))
  {
    LOG("link ready");
    mesh_link(link->mesh, link);
  }
  
  return link;
}

Example #3

File: link.c Project: fd/telehash-c

// process an incoming handshake
link_t link_handshake(link_t link, lob_t inner, lob_t outer, pipe_t pipe)
{
  link_t ready;
  uint32_t out;

  if(!link || !inner || !outer) return LOG("bad args");
  if(!link->key && link_key(link->mesh,inner) != link) return LOG("invalid/mismatch handshake key");
  out = exchange3_out(link->x,0);
  ready = link_ready(link);

  // if bad at, always send current handshake
  if(exchange3_in(link->x, lob_get_int(inner,"at")) < out)
  {
    LOG("old/bad at: %s (%d,%d,%d)",lob_json(inner),lob_get_int(inner,"at"),exchange3_in(link->x,0),exchange3_out(link->x,0));
    if(pipe) pipe->send(pipe,exchange3_handshake(link->x),link);
    return NULL;
  }

  // trust/add this pipe
  if(pipe) link_pipe(link,pipe);

  // try to sync ephemeral key
  if(!exchange3_sync(link->x,outer)) return LOG("sync failed");
  
  // we may need to re-sync
  if(out != exchange3_out(link->x,0)) link_sync(link);
  
  // notify of ready state change
  if(!ready && link_ready(link))
  {
    LOG("link ready");
    mesh_link(link->mesh, link);
  }
  
  return link;
}