Dmitry Shmidt | e86eee1 | 2011-01-24 16:27:51 -0800 | [diff] [blame] | 1 | /* |
| 2 | * dhcpcd - DHCP client daemon |
Dmitry Shmidt | a3a2260 | 2012-07-23 16:45:46 -0700 | [diff] [blame] | 3 | * Copyright (c) 2006-2012 Roy Marples <roy@marples.name> |
Dmitry Shmidt | e86eee1 | 2011-01-24 16:27:51 -0800 | [diff] [blame] | 4 | * All rights reserved |
| 5 | |
| 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions |
| 8 | * are met: |
| 9 | * 1. Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * 2. Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
| 14 | * |
| 15 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 16 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 17 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 18 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 19 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 20 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 21 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 22 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 23 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 24 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 25 | * SUCH DAMAGE. |
| 26 | */ |
| 27 | |
| 28 | #include <sys/param.h> |
Dmitry Shmidt | a3a2260 | 2012-07-23 16:45:46 -0700 | [diff] [blame] | 29 | #include <sys/socket.h> |
Dmitry Shmidt | e86eee1 | 2011-01-24 16:27:51 -0800 | [diff] [blame] | 30 | #include <sys/sysctl.h> |
| 31 | #include <sys/utsname.h> |
Dmitry Shmidt | a3a2260 | 2012-07-23 16:45:46 -0700 | [diff] [blame] | 32 | #include <netinet/in.h> |
| 33 | |
| 34 | #include <syslog.h> |
Dmitry Shmidt | e86eee1 | 2011-01-24 16:27:51 -0800 | [diff] [blame] | 35 | |
| 36 | #include "platform.h" |
| 37 | |
| 38 | #ifndef SYS_NMLN /* OSX */ |
| 39 | # define SYS_NMLN 256 |
| 40 | #endif |
| 41 | |
| 42 | static char march[SYS_NMLN]; |
| 43 | |
| 44 | char * |
| 45 | hardware_platform(void) |
| 46 | { |
| 47 | int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; |
| 48 | size_t len = sizeof(march); |
| 49 | |
| 50 | if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), |
| 51 | march, &len, NULL, 0) != 0) |
| 52 | return NULL; |
| 53 | return march; |
| 54 | } |
Dmitry Shmidt | a3a2260 | 2012-07-23 16:45:46 -0700 | [diff] [blame] | 55 | |
| 56 | static int |
| 57 | inet6_sysctl(int code) |
| 58 | { |
| 59 | int mib[] = { CTL_NET, PF_INET6, IPPROTO_IPV6, 0 }; |
| 60 | int val; |
| 61 | size_t size; |
| 62 | |
| 63 | mib[3] = code; |
| 64 | size = sizeof(val); |
| 65 | if (sysctl(mib, sizeof(mib)/sizeof(mib[0]), &val, &size, NULL, 0) == -1) |
| 66 | return -1; |
| 67 | return val; |
| 68 | } |
| 69 | |
| 70 | int |
| 71 | check_ipv6(const char *ifname) |
| 72 | { |
| 73 | |
| 74 | /* BSD doesn't support these values per iface, so just reutrn 1 */ |
| 75 | if (ifname) |
| 76 | return 1; |
| 77 | |
| 78 | if (inet6_sysctl(IPV6CTL_ACCEPT_RTADV) != 1) { |
| 79 | syslog(LOG_WARNING, |
| 80 | "Kernel is not configured to accept IPv6 RAs"); |
| 81 | return 0; |
| 82 | } |
| 83 | if (inet6_sysctl(IPV6CTL_FORWARDING) != 0) { |
| 84 | syslog(LOG_WARNING, |
| 85 | "Kernel is configured as a router, not a host"); |
| 86 | return 0; |
| 87 | } |
| 88 | return 1; |
| 89 | } |