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/* $OpenBSD: printconf.c,v 1.6 2023/11/25 13:00:05 florian Exp $ */
/*
* Copyright (c) 2018 Florian Obser <florian@openbsd.org>
* Copyright (c) 2004, 2005 Esben Norby <norby@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <sys/queue.h>
#include <sys/socket.h>
#include <sys/uio.h>
#include <net/if.h>
#include <netinet/in.h>
#include <netinet/if_ether.h>
#include <arpa/inet.h>
#include <event.h>
#include <imsg.h>
#include <stdio.h>
#include <stdlib.h>
#include <vis.h>
#include "dhcpleased.h"
#include "log.h"
void print_dhcp_options(char *, uint8_t *, int);
void
print_dhcp_options(char *indent, uint8_t *p, int len)
{
static char buf[4 * 1500 + 1];
int rem, i;
uint8_t dho, dho_len;
rem = len;
while (rem > 0) {
dho = *p;
p += 1;
rem -= 1;
if (rem == 0)
fatal("dhcp option too short");
dho_len = *p;
p += 1;
rem -= 1;
if (rem < dho_len)
fatal("dhcp option too short: %d %d", rem, dho_len);
switch (dho) {
case DHO_DHCP_CLASS_IDENTIFIER:
strvisx(buf, p, dho_len, VIS_DQ | VIS_CSTYLE);
p += dho_len;
rem -= dho_len;
printf("%ssend vendor class id \"%s\"\n", indent, buf);
break;
case DHO_DHCP_CLIENT_IDENTIFIER:
if (dho_len < 1)
fatal("dhcp option too short");
switch (*p) {
case HTYPE_ETHER:
printf("%ssend client id \"", indent);
for (i = 0; i < dho_len; i++)
printf("%s%02x", i != 0? ":" : "",
*(p + i));
printf("\"\n");
break;
default:
strvisx(buf, p, dho_len, VIS_DQ | VIS_CSTYLE);
printf("%ssend client id \"%s\"\n",
indent, buf);
break;
}
p += dho_len;
rem -= dho_len;
break;
default:
fatal("unknown dhcp option: %d [%d]", *p, rem);
break;
}
}
}
void
print_config(struct dhcpleased_conf *conf)
{
struct iface_conf *iface;
int i;
char hbuf[INET_ADDRSTRLEN];
SIMPLEQ_FOREACH(iface, &conf->iface_list, entry) {
printf("interface %s {\n", iface->name);
print_dhcp_options("\t", iface->c_id, iface->c_id_len);
if (iface->h_name != NULL) {
if (iface->h_name[0] == '\0')
printf("\tsend no host name\n");
else {
printf("\tsend host name \"%s\"\n",
iface->h_name);
}
}
print_dhcp_options("\t", iface->vc_id, iface->vc_id_len);
if (iface->ignore & IGN_DNS)
printf("\tignore dns\n");
if (iface->ignore & IGN_ROUTES)
printf("\tignore routes\n");
for (i = 0; i < iface->ignore_servers_len; i++) {
if (inet_ntop(AF_INET, &iface->ignore_servers[i],
hbuf, sizeof(hbuf)) == NULL)
continue;
printf("\tignore %s\n", hbuf);
}
if (iface->prefer_ipv6)
printf("\tprefer ipv6\n");
printf("}\n");
}
}
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