90 lines
2.5 KiB
C
90 lines
2.5 KiB
C
/*
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* dhcpcd - DHCP client daemon
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* Copyright (c) 2006-2012 Roy Marples <roy@marples.name>
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* All rights reserved
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <sys/sysctl.h>
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#include <sys/utsname.h>
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#include <netinet/in.h>
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#include <syslog.h>
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#include "platform.h"
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#ifndef SYS_NMLN /* OSX */
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# define SYS_NMLN 256
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#endif
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static char march[SYS_NMLN];
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char *
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hardware_platform(void)
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{
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int mib[2] = { CTL_HW, HW_MACHINE_ARCH };
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size_t len = sizeof(march);
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if (sysctl(mib, sizeof(mib) / sizeof(mib[0]),
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march, &len, NULL, 0) != 0)
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return NULL;
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return march;
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}
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static int
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inet6_sysctl(int code)
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{
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int mib[] = { CTL_NET, PF_INET6, IPPROTO_IPV6, 0 };
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int val;
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size_t size;
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mib[3] = code;
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size = sizeof(val);
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if (sysctl(mib, sizeof(mib)/sizeof(mib[0]), &val, &size, NULL, 0) == -1)
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return -1;
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return val;
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}
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int
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check_ipv6(const char *ifname)
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{
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/* BSD doesn't support these values per iface, so just reutrn 1 */
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if (ifname)
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return 1;
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if (inet6_sysctl(IPV6CTL_ACCEPT_RTADV) != 1) {
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syslog(LOG_WARNING,
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"Kernel is not configured to accept IPv6 RAs");
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return 0;
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}
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if (inet6_sysctl(IPV6CTL_FORWARDING) != 0) {
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syslog(LOG_WARNING,
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"Kernel is configured as a router, not a host");
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return 0;
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}
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return 1;
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}
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