/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (C) 2011 Hiroki Sato <hrs@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <sys/queue.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/un.h>
#include <sys/uio.h>
#include <net/if.h>
#include <net/if_dl.h>
#include <netinet/in.h>
#include <netinet/icmp6.h>
#include <fcntl.h>
#include <errno.h>
#include <netdb.h>
#include <unistd.h>
#include <signal.h>
#include <string.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <syslog.h>
#include "pathnames.h"
#include "rtadvd.h"
#include "if.h"
#include "control.h"
#include "control_client.h"
int
cm_handler_client(int fd, int state, char *buf_orig)
{
char buf[CM_MSG_MAXLEN];
struct ctrl_msg_hdr *cm;
struct ctrl_msg_hdr *cm_orig;
int error;
char *msg;
char *msg_orig;
syslog(LOG_DEBUG, "<%s> enter", __func__);
memset(buf, 0, sizeof(buf));
cm = (struct ctrl_msg_hdr *)buf;
cm_orig = (struct ctrl_msg_hdr *)buf_orig;
msg = (char *)buf + sizeof(*cm);
msg_orig = (char *)buf_orig + sizeof(*cm_orig);
if (cm_orig->cm_len > CM_MSG_MAXLEN) {
syslog(LOG_DEBUG, "<%s> msg too long", __func__);
close(fd);
return (-1);
}
cm->cm_type = cm_orig->cm_type;
if (cm_orig->cm_len > sizeof(*cm_orig)) {
memcpy(msg, msg_orig, cm_orig->cm_len - sizeof(*cm));
cm->cm_len = cm_orig->cm_len;
}
while (state != CM_STATE_EOM) {
syslog(LOG_DEBUG, "<%s> state = %d", __func__, state);
switch (state) {
case CM_STATE_INIT:
state = CM_STATE_EOM;
break;
case CM_STATE_MSG_DISPATCH:
cm->cm_version = CM_VERSION;
error = cm_send(fd, buf);
if (error) {
syslog(LOG_WARNING,
"<%s> cm_send()", __func__);
return (-1);
}
state = CM_STATE_ACK_WAIT;
break;
case CM_STATE_ACK_WAIT:
error = cm_recv(fd, buf);
if (error) {
syslog(LOG_ERR,
"<%s> cm_recv()", __func__);
close(fd);
return (-1);
}
switch (cm->cm_type) {
case CM_TYPE_ACK:
syslog(LOG_DEBUG,
"<%s> CM_TYPE_ACK", __func__);
break;
case CM_TYPE_ERR:
syslog(LOG_DEBUG,
"<%s> CM_TYPE_ERR", __func__);
close(fd);
return (-1);
default:
syslog(LOG_DEBUG,
"<%s> unknown status", __func__);
close(fd);
return (-1);
}
memcpy(buf_orig, buf, cm->cm_len);
state = CM_STATE_EOM;
break;
}
}
close(fd);
return (0);
}
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