ConnectLog.cpp

extern "C" MOZ_EXPORT int
connect(int sockfd, const struct sockaddr* addr, socklen_t addrlen)
{
  static auto sRealFunc =
    (int (*)(int, const struct sockaddr*, socklen_t))
    dlsym(RTLD_NEXT, "connect");

  auto pid = getpid();
  if (addr == nullptr) {
    SANDBOX_LOG_ERROR("connect[%d]: %d to nullptr", pid, sockfd);
  } else {
    if (addr->sa_family != AF_UNIX) {
      SANDBOX_LOG_ERROR("connect[%d]: %d to family %d", pid, sockfd, addr->sa_family);
    } else {
      auto sun = reinterpret_cast<const struct sockaddr_un*>(addr);
      if (sun->sun_path[0] == '\0') {
        SANDBOX_LOG_ERROR("connect[%d]: %d to abstract %s", pid, sockfd, sun->sun_path + 1);
      } else {
        SANDBOX_LOG_ERROR("connect[%d]: %d to path %s", pid, sockfd, sun->sun_path);
      }
    }
  }

  return sRealFunc(sockfd, addr, addrlen);
}