1224006Shrs/*- 2224006Shrs * Copyright (C) 2011 Hiroki Sato <hrs@FreeBSD.org> 3224006Shrs * All rights reserved. 4224006Shrs * 5224006Shrs * Redistribution and use in source and binary forms, with or without 6224006Shrs * modification, are permitted provided that the following conditions 7224006Shrs * are met: 8224006Shrs * 1. Redistributions of source code must retain the above copyright 9224006Shrs * notice, this list of conditions and the following disclaimer. 10224006Shrs * 2. Redistributions in binary form must reproduce the above copyright 11224006Shrs * notice, this list of conditions and the following disclaimer in the 12224006Shrs * documentation and/or other materials provided with the distribution. 13224006Shrs * 14224006Shrs * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 15224006Shrs * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16224006Shrs * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 17224006Shrs * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS 18224006Shrs * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 19224006Shrs * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 20224006Shrs * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 21224006Shrs * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 22224006Shrs * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 23224006Shrs * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 24224006Shrs * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25224006Shrs * 26224006Shrs * $FreeBSD$ 27224006Shrs * 28224006Shrs */ 29224006Shrs 30224006Shrs#include <sys/queue.h> 31224006Shrs#include <sys/types.h> 32224006Shrs#include <sys/socket.h> 33224006Shrs#include <sys/stat.h> 34224006Shrs#include <sys/un.h> 35224006Shrs#include <sys/uio.h> 36224006Shrs#include <net/if.h> 37224006Shrs#include <net/if_dl.h> 38224006Shrs#include <netinet/in.h> 39224006Shrs#include <netinet/icmp6.h> 40224006Shrs#include <fcntl.h> 41224006Shrs#include <errno.h> 42224006Shrs#include <netdb.h> 43224006Shrs#include <unistd.h> 44224006Shrs#include <signal.h> 45224006Shrs#include <string.h> 46224006Shrs#include <stdarg.h> 47224006Shrs#include <stdio.h> 48224006Shrs#include <stdlib.h> 49224006Shrs#include <syslog.h> 50224006Shrs 51224006Shrs#include "pathnames.h" 52224006Shrs#include "rtadvd.h" 53224006Shrs#include "if.h" 54224006Shrs#include "control.h" 55224006Shrs#include "control_client.h" 56224006Shrs 57224006Shrsint 58225519Shrscm_handler_client(int fd, int state, char *buf_orig) 59224006Shrs{ 60224006Shrs char buf[CM_MSG_MAXLEN]; 61224006Shrs struct ctrl_msg_hdr *cm; 62224006Shrs struct ctrl_msg_hdr *cm_orig; 63224006Shrs int error; 64224006Shrs char *msg; 65224006Shrs char *msg_orig; 66224006Shrs 67224006Shrs syslog(LOG_DEBUG, "<%s> enter", __func__); 68224006Shrs 69224006Shrs memset(buf, 0, sizeof(buf)); 70224006Shrs cm = (struct ctrl_msg_hdr *)buf; 71224006Shrs cm_orig = (struct ctrl_msg_hdr *)buf_orig; 72224006Shrs msg = (char *)buf + sizeof(*cm); 73224006Shrs msg_orig = (char *)buf_orig + sizeof(*cm_orig); 74224006Shrs 75224006Shrs if (cm_orig->cm_len > CM_MSG_MAXLEN) { 76224006Shrs syslog(LOG_DEBUG, "<%s> msg too long", __func__); 77224006Shrs close(fd); 78224006Shrs return (-1); 79224006Shrs } 80224006Shrs cm->cm_type = cm_orig->cm_type; 81224006Shrs if (cm_orig->cm_len > sizeof(*cm_orig)) { 82224006Shrs memcpy(msg, msg_orig, cm_orig->cm_len - sizeof(*cm)); 83224006Shrs cm->cm_len = cm_orig->cm_len; 84224006Shrs } 85224006Shrs while (state != CM_STATE_EOM) { 86224006Shrs syslog(LOG_DEBUG, "<%s> state = %d", __func__, state); 87224006Shrs 88224006Shrs switch (state) { 89224006Shrs case CM_STATE_INIT: 90224006Shrs state = CM_STATE_EOM; 91224006Shrs break; 92224006Shrs case CM_STATE_MSG_DISPATCH: 93224006Shrs cm->cm_version = CM_VERSION; 94225519Shrs error = cm_send(fd, buf); 95301809Sngie if (error) { 96224006Shrs syslog(LOG_WARNING, 97225519Shrs "<%s> cm_send()", __func__); 98301809Sngie return (-1); 99301809Sngie } 100224006Shrs state = CM_STATE_ACK_WAIT; 101224006Shrs break; 102224006Shrs case CM_STATE_ACK_WAIT: 103225519Shrs error = cm_recv(fd, buf); 104224006Shrs if (error) { 105224006Shrs syslog(LOG_ERR, 106225519Shrs "<%s> cm_recv()", __func__); 107224006Shrs close(fd); 108224006Shrs return (-1); 109224006Shrs } 110224006Shrs switch (cm->cm_type) { 111224006Shrs case CM_TYPE_ACK: 112224006Shrs syslog(LOG_DEBUG, 113224006Shrs "<%s> CM_TYPE_ACK", __func__); 114224006Shrs break; 115224006Shrs case CM_TYPE_ERR: 116224006Shrs syslog(LOG_DEBUG, 117224006Shrs "<%s> CM_TYPE_ERR", __func__); 118224006Shrs close(fd); 119224006Shrs return (-1); 120224006Shrs default: 121224006Shrs syslog(LOG_DEBUG, 122224006Shrs "<%s> unknown status", __func__); 123224006Shrs close(fd); 124224006Shrs return (-1); 125224006Shrs } 126224006Shrs memcpy(buf_orig, buf, cm->cm_len); 127224006Shrs state = CM_STATE_EOM; 128224006Shrs break; 129224006Shrs } 130224006Shrs } 131224006Shrs close(fd); 132224006Shrs return (0); 133224006Shrs} 134