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