#include "msg.h" namespace client_msg { int driver_read; int driver_write; auto call_driver(client_msg_t msg) -> bool { int is_success = write(driver_write, &msg, sizeof(client_msg_t)); if (is_success == 0) { ERROR("Failed to write message to safe_duck device"); return false; } return true; } auto dispath_kernel_msg_i(_msg_type type, kernel_msg_t msg) -> void { switch (type) { case _msg_type::SD_MSG_TYPE_NEW_IP_CONNECT: case _msg_type::SD_MSG_TYPE_SYN_ATTACK: case _msg_type::SD_MSG_TYPE_SSH_BF_ATTACK: { network_event::on_event(type, msg); } break; default: LOG("Unknown message type: %d\n", msg.type); break; } } auto dispath_kernel_msg() -> void { int fd = driver_read; while (1) { struct pollfd fds[1]; fds[0].fd = fd; fds[0].events = POLLIN; LOG("Waiting for message from safe_duck device...\n"); int ret = poll(fds, 1, -1); if (ret < 0) { ERROR("poll failed"); close(fd); return; } LOG("Got message from safe_duck device\n"); if (fds[0].revents & POLLIN) { kernel_msg_t msg; int is_success = read(fd, &msg, sizeof(kernel_msg_t)); if (is_success == 0 && msg.check_sum == MSG_CHECK_SUM) { dispath_kernel_msg_i((_msg_type)msg.type, msg); } else { ERROR("Failed to read message from safe_duck device"); } } } } auto init() -> bool { driver_read = open("/dev/safe_duck", O_RDWR); if (driver_read < 0) { ERROR("Failed to open safe_duck device"); return false; } driver_write = open("/dev/safe_duck", O_RDWR); if (driver_write < 0) { ERROR("Failed to open safe_duck device"); return false; } return true; } auto uninstall() -> void { if (driver_write) { close(driver_write); driver_write = 0; } if (driver_read) { close(driver_read); driver_read = 0; } } } // namespace client_msg