Annotation of src/etc/netstart, Revision 1.193
1.1 deraadt 1: #!/bin/sh -
2: #
1.193 ! rpe 3: # $OpenBSD: netstart,v 1.192 2018/02/17 13:11:03 rpe Exp $
1.153 rpe 4:
5: # Turn off Strict Bourne shell mode.
6: set +o sh
1.101 millert 7:
1.173 rpe 8: # Echo file $1 to stdout. Skip comment lines and delete everything
9: # after the first '#' from other lines. Strip leading and trailing
10: # whitespace if IFS is set.
1.160 rpe 11: # Usage: stripcom /path/to/file
1.101 millert 12: stripcom() {
1.160 rpe 13: local _file=$1 _line
14:
15: [[ -f $_file ]] || return
16:
17: while read _line; do
18: [[ -n ${_line%%#*} ]] && print -r -- "$_line"
19: done <$_file
1.101 millert 20: }
1.45 millert 21:
1.177 rpe 22: # Parse and "unpack" a hostname.if(5) line given as positional parameters.
23: # Fill the _cmds array with the resulting interface configuration commands.
24: parse_hn_line() {
25: local _af=0 _name=1 _mask=2 _bc=3 _prefix=2 _c _cmd _prev _daddr
26: set -A _c -- "$@"
27: set -o noglob
28:
29: case ${_c[_af]} in
30: ''|*([[:blank:]])'#'*)
31: return
32: ;;
33: inet) ((${#_c[*]} > 1)) || return
34: [[ ${_c[_name]} == alias ]] && _mask=3 _bc=4
35: [[ -n ${_c[_mask]} ]] && _c[_mask]="netmask ${_c[_mask]}"
36: if [[ -n ${_c[_bc]} ]]; then
37: _c[_bc]="broadcast ${_c[_bc]}"
38: [[ ${_c[_bc]} == *NONE ]] && _c[_bc]=
39: fi
40: _cmds[${#_cmds[*]}]="ifconfig $_if ${_c[@]}"
41: ;;
42: inet6) ((${#_c[*]} > 1)) || return
43: if [[ ${_c[_name]} == autoconf ]]; then
44: _cmds[${#_cmds[*]}]="ifconfig $_if ${_c[@]}"
1.180 rpe 45: V6_AUTOCONF=true
1.177 rpe 46: return
47: fi
48: [[ ${_c[_name]} == alias ]] && _prefix=3
49: [[ -n ${_c[_prefix]} ]] && _c[_prefix]="prefixlen ${_c[_prefix]}"
50: _cmds[${#_cmds[*]}]="ifconfig $_if ${_c[@]}"
51: ;;
52: dest) ((${#_c[*]} == 2)) && _daddr=${_c[1]} || return
53: _prev=$((${#_cmds[*]} - 1))
54: ((_prev >= 0)) || return
55: set -A _c -- ${_cmds[_prev]}
56: _name=3
57: [[ ${_c[_name]} == alias ]] && _name=4
58: _c[_name]="${_c[_name]} $_daddr"
59: _cmds[$_prev]="${_c[@]}"
60: ;;
61: dhcp) _c[0]=
62: _cmds[${#_cmds[*]}]="ifconfig $_if ${_c[@]} down;dhclient $_if"
1.180 rpe 63: V4_DHCPCONF=true
1.177 rpe 64: ;;
65: '!'*) _cmd=$(print -- "${_c[@]}" | sed 's/\$if/'$_if'/g')
66: _cmds[${#_cmds[*]}]="${_cmd#!}"
67: ;;
68: *) _cmds[${#_cmds[*]}]="ifconfig $_if ${_c[@]}"
69: ;;
70: esac
71: unset _c
1.178 rpe 72: set +o noglob
1.177 rpe 73: }
74:
1.192 rpe 75: # Create interface $1 if it does not yet exist.
1.191 dlg 76: ifcreate() {
77: local _if=$1
78:
1.192 rpe 79: { ifconfig $_if || ifconfig $_if create; } >/dev/null 2>&1
1.191 dlg 80: }
81:
1.192 rpe 82: # Create interfaces for network pseudo-devices referred to by hostname.if files.
1.191 dlg 83: vifscreate() {
1.192 rpe 84: local _vif _hn _if
1.191 dlg 85:
1.192 rpe 86: for _vif in $(ifconfig -C); do
1.193 ! rpe 87: for _hn in /etc/hostname.${_vif}+([[:digit:]]); do
1.191 dlg 88: [[ -f $_hn ]] || continue
89: _if=${_hn#/etc/hostname.}
90:
1.193 ! rpe 91: if ! ifcreate $_if; then
! 92: echo "${0##*/}: create for '$_if' failed."
! 93: fi
1.191 dlg 94: done
95: done
96: }
97:
1.160 rpe 98: # Start a single interface.
99: # Usage: ifstart if1
1.83 miod 100: ifstart() {
1.187 tb 101: local _if=$1 _hn=/etc/hostname.$1 _cmds _i=0 _line _stat
1.177 rpe 102: set -A _cmds
1.174 rpe 103:
1.83 miod 104: # Interface names must be alphanumeric only. We check to avoid
105: # configuring backup or temp files, and to catch the "*" case.
1.177 rpe 106: [[ $_if != +([[:alpha:]])+([[:digit:]]) ]] && return
1.83 miod 107:
1.185 rpe 108: if [[ ! -f $_hn ]]; then
109: echo "${0##*/}: $_hn: No such file or directory"
1.121 todd 110: return
111: fi
1.177 rpe 112:
1.146 rpe 113: # Not using stat(1), we can't rely on having /usr yet.
1.185 rpe 114: set -A _stat -- $(ls -nL $_hn)
1.183 rpe 115: if [[ "${_stat[0]}${_stat[2]}${_stat[3]}" != *---00 ]]; then
1.185 rpe 116: echo "WARNING: $_hn is insecure, fixing permissions"
117: chmod -LR o-rwx $_hn
118: chown -LR root:wheel $_hn
1.119 deraadt 119: fi
1.83 miod 120:
1.177 rpe 121: # Check for ifconfig'able interface, except if -n option is specified.
122: if ! $PRINT_ONLY; then
1.191 dlg 123: ifcreate $_if || return
1.177 rpe 124: fi
125:
126: # Parse the hostname.if(5) file and fill _cmds array with interface
127: # configuration commands.
128: set -o noglob
129: while IFS= read -- _line; do
130: parse_hn_line $_line
1.185 rpe 131: done <$_hn
1.177 rpe 132:
133: # Apply the interface configuration commands stored in _cmds array.
134: while ((_i < ${#_cmds[*]})); do
135: if $PRINT_ONLY; then
136: print -r -- "${_cmds[_i]}"
1.83 miod 137: else
1.177 rpe 138: eval "${_cmds[_i]}"
1.83 miod 139: fi
1.177 rpe 140: ((_i++))
141: done
142: unset _cmds
1.178 rpe 143: set +o noglob
1.83 miod 144: }
145:
1.161 rpe 146: # Start multiple interfaces by driver name.
147: # Usage: ifmstart "em iwm" "trunk vlan"
1.146 rpe 148: # Start "$1" interfaces in order or all interfaces if empty.
1.161 rpe 149: # Don't start "$2" interfaces. "$2" is optional.
1.105 todd 150: ifmstart() {
1.161 rpe 151: local _sifs=$1 _xifs=$2 _hn _if _sif _xif
152:
153: for _sif in ${_sifs:-ALL}; do
1.193 ! rpe 154: for _hn in /etc/hostname.+([[:alpha:]])+([[:digit:]]); do
! 155: [[ -f $_hn ]] || continue
1.161 rpe 156: _if=${_hn#/etc/hostname.}
1.113 david 157:
1.146 rpe 158: # Skip unwanted ifs.
1.161 rpe 159: for _xif in $_xifs; do
160: [[ $_xif == ${_if%%[0-9]*} ]] && continue 2
1.105 todd 161: done
162:
1.146 rpe 163: # Start wanted ifs.
1.161 rpe 164: [[ $_sif == @(ALL|${_if%%[0-9]*}) ]] && ifstart $_if
1.105 todd 165: done
166: done
167: }
168:
1.172 mpi 169: # Parse /etc/mygate and add default routes for IPv4 and IPv6
170: # Usage: defaultroute
171: defaultroute() {
1.188 tb 172: local _cmd;
173:
1.180 rpe 174: ! $V4_DHCPCONF && stripcom /etc/mygate |
175: while read gw; do
176: [[ $gw == @(*:*) ]] && continue
1.188 tb 177: _cmd="route -qn add -host default $gw"
178: if $PRINT_ONLY; then
179: print -r -- "$_cmd" && break
180: else
181: $_cmd && break
182: fi
1.172 mpi 183: done
1.180 rpe 184: ! $V6_AUTOCONF && stripcom /etc/mygate |
185: while read gw; do
186: [[ $gw == !(*:*) ]] && continue
1.188 tb 187: _cmd="route -qn add -host -inet6 default $gw"
188: if $PRINT_ONLY; then
189: print -r -- "$_cmd" && break
190: else
191: $_cmd && break
192: fi
1.172 mpi 193: done
194: }
1.154 sthen 195:
1.151 rpe 196: # Get network related vars from rc.conf using the parsing routine from rc.subr.
197: FUNCS_ONLY=1 . /etc/rc.d/rc.subr
1.150 ajacouto 198: _rc_parse_conf
1.177 rpe 199:
200: PRINT_ONLY=false
201: USAGE="USAGE: ${0##*/} [-n] [interface ...]"
1.180 rpe 202: V4_DHCPCONF=false
203: V6_AUTOCONF=false
204:
1.177 rpe 205: while getopts ":n" opt; do
206: case $opt in
207: n) PRINT_ONLY=true;;
208: *) print -u2 "$USAGE"; exit 1;;
209: esac
210: done
211: shift $((OPTIND-1))
212:
213: # Option -n is only supported if interface names are specified as parameters.
214: if $PRINT_ONLY && (($# == 0)); then
215: print -u2 "Missing parameters.\n$USAGE"
216: exit 1
217: fi
1.189 florian 218:
219: $PRINT_ONLY || [[ ! -f /etc/soii.key ]] ||
220: sysctl -q "net.inet6.ip6.soiikey=$(</etc/soii.key)"
1.1 deraadt 221:
1.83 miod 222: # If we were invoked with a list of interface names, just reconfigure these
1.172 mpi 223: # interfaces (or bridges), add default routes and return.
1.159 rpe 224: if (($# > 0)); then
225: for _if; do ifstart $_if; done
1.172 mpi 226: defaultroute
1.83 miod 227: return
228: fi
229:
230: # Otherwise, process with the complete network initialization.
231:
1.146 rpe 232: # /etc/myname contains my symbolic name.
1.159 rpe 233: [[ -f /etc/myname ]] && hostname "$(stripcom /etc/myname)"
1.4 dm 234:
1.131 sobrado 235: # Set the address for the loopback interface. Bringing the interface up,
236: # automatically invokes the IPv6 address ::1.
1.129 henning 237: ifconfig lo0 inet 127.0.0.1/8
1.24 kstailey 238:
1.54 itojun 239: if ifconfig lo0 inet6 >/dev/null 2>&1; then
240: # IPv6 configurations.
241: ip6kernel=YES
242:
1.83 miod 243: # Disallow link-local unicast dest without outgoing scope identifiers.
1.147 rpe 244: route -qn add -inet6 fe80:: -prefixlen 10 ::1 -reject >/dev/null
1.66 itojun 245:
1.83 miod 246: # Disallow site-local unicast dest without outgoing scope identifiers.
1.66 itojun 247: # If you configure site-locals without scope id (it is permissible
248: # config for routers that are not on scope boundary), you may want
249: # to comment the line out.
1.147 rpe 250: route -qn add -inet6 fec0:: -prefixlen 10 ::1 -reject >/dev/null
1.66 itojun 251:
1.83 miod 252: # Disallow "internal" addresses to appear on the wire.
1.147 rpe 253: route -qn add -inet6 ::ffff:0.0.0.0 -prefixlen 96 ::1 -reject >/dev/null
1.66 itojun 254:
1.83 miod 255: # Disallow packets to malicious 6to4 prefix.
1.147 rpe 256: route -qn add -inet6 2002:e000:: -prefixlen 20 ::1 -reject >/dev/null
257: route -qn add -inet6 2002:7f00:: -prefixlen 24 ::1 -reject >/dev/null
258: route -qn add -inet6 2002:0000:: -prefixlen 24 ::1 -reject >/dev/null
259: route -qn add -inet6 2002:ff00:: -prefixlen 24 ::1 -reject >/dev/null
1.115 itojun 260:
261: # Disallow packets without scope identifier.
1.147 rpe 262: route -qn add -inet6 ff01:: -prefixlen 16 ::1 -reject >/dev/null
263: route -qn add -inet6 ff02:: -prefixlen 16 ::1 -reject >/dev/null
1.66 itojun 264:
265: # Completely disallow packets to IPv4 compatible prefix.
1.146 rpe 266: #
1.66 itojun 267: # This may conflict with RFC1933 under following circumstances:
268: # (1) An IPv6-only KAME node tries to originate packets to IPv4
1.77 deraadt 269: # compatible destination. The KAME node has no IPv4 compatible
1.66 itojun 270: # support. Under RFC1933, it should transmit native IPv6
271: # packets toward IPv4 compatible destination, hoping it would
272: # reach a router that forwards the packet toward auto-tunnel
273: # interface.
1.77 deraadt 274: # (2) An IPv6-only node originates a packet to an IPv4 compatible
1.66 itojun 275: # destination. A KAME node is acting as an IPv6 router, and
276: # asked to forward it.
1.146 rpe 277: #
1.77 deraadt 278: # Due to rare use of IPv4 compatible addresses, and security issues
1.66 itojun 279: # with it, we disable it by default.
1.147 rpe 280: route -qn add -inet6 ::0.0.0.0 -prefixlen 96 ::1 -reject >/dev/null
1.54 itojun 281: else
282: ip6kernel=NO
283: fi
284:
1.191 dlg 285: # Create all the pseudo interfaces up front
286: vifscreate
1.105 todd 287:
288: # Configure all the non-loopback interfaces which we know about, but
1.127 deraadt 289: # do not start interfaces which must be delayed. Refer to hostname.if(5)
1.191 dlg 290: ifmstart "" "trunk svlan vlan carp pppoe tun tap gif etherip gre egre mobileip pflow"
1.56 itojun 291:
1.118 brad 292: # The trunk interfaces need to come up first in this list.
1.132 mpf 293: # The (s)vlan interfaces need to come up after trunk.
1.118 brad 294: # Configure all the carp interfaces which we know about before default route.
1.191 dlg 295: ifmstart "trunk svlan vlan carp pppoe"
1.102 mcbride 296:
1.138 todd 297: # Look for default routes in /etc/mygate.
1.172 mpi 298: defaultroute
1.44 deraadt 299:
1.48 niklas 300: # Multicast routing.
1.168 sthen 301: if [[ $multicast != YES ]]; then
302: route -qn delete 224.0.0.0/4 >/dev/null 2>&1
1.147 rpe 303: route -qn add -net 224.0.0.0/4 -interface 127.0.0.1 -reject >/dev/null
1.168 sthen 304: fi
1.105 todd 305:
1.146 rpe 306: # Reject 127/8 other than 127.0.0.1.
1.147 rpe 307: route -qn add -net 127 127.0.0.1 -reject >/dev/null
1.191 dlg 308:
309: # Configure interfaces that rely on routing
310: ifmstart "tun tap gif etherip gre egre mobileip pflow"
1.116 david 311:
1.159 rpe 312: if [[ $ip6kernel == YES ]]; then
1.146 rpe 313: # This is to make sure DAD is completed before going further.
1.124 markus 314: count=0
1.159 rpe 315: while ((count++ < 10 && $(sysctl -n net.inet6.ip6.dad_pending) != 0)); do
1.124 markus 316: sleep 1
317: done
1.116 david 318: fi
![[BACK]](/icons/back.gif){kind=icon}
Return to netstart CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / etc