| 1 | #!/bin/sh
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| 2 | #
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| 3 | # This file is part of the FreeWRT project. FreeWRT is copyrighted
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| 4 | # material, please see the LICENCE file in the top-level directory
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| 5 | # or at http://www.freewrt.org/licence for details.
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| 6 | #
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| 7 | # Christian Fischer <spaetzle@freewrt.org>
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| 8 | #
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| 9 |
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| 10 | set -u
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| 11 |
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| 12 | builtin() {
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| 13 | local builtin=$1
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| 14 | local alias=$(alias $builtin)
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| 15 | unalias $builtin
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| 16 | alias $(echo $alias|sed 's/'\''//g')
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| 17 | shift
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| 18 | $builtin $@
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| 19 | }
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| 20 |
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| 21 | config() {
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| 22 | [ "$1" != "0" ]
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| 23 | }
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| 24 | __ifupdown() {
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| 25 | local environ=$(cat $ENVFILE)
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| 26 |
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| 27 | IFUPDOWN_ENV=$(echo -n $IFUPDOWN_ENV|sed 's/\(MDENT=\)[^ ]*[[:space:]]*//g';\
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| 28 | echo "PARENT_IFACE_TYPE=$IFACE_TYPE"; \
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| 29 | echo "PARENT_IFACE=$IFACE"; \
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| 30 | echo " MDENT=$MDENT"; \
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| 31 | echo -e " MOFFSET=$MOFFSET") \
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| 32 | busybox $@
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| 33 |
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| 34 | local retval=$?
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| 35 | echo $environ > $ENVFILE
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| 36 | return $retval
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| 37 | }
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| 38 |
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| 39 | __exit() {
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| 40 | [ "$1" != "0" ] && echo "H_ERR=1" >> $ENVFILE
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| 41 | exit $1
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| 42 | }
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| 43 |
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| 44 | iface_exists() {
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| 45 | grep -q "${1:-$IFACE}:" /proc/net/dev
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| 46 | }
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| 47 |
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| 48 | is_up() {
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| 49 | local iface=${1:-$IFACE}
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| 50 |
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| 51 | if iface_exists $iface
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| 52 | then
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| 53 | ip a|grep ${iface}:[[:space:]]|grep -q UP && return
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| 54 |
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| 55 | ### ifupdown netlink bug workaround ###
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| 56 | # suppress "ip: RTNETLINK answers: File exists" message in the case of
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| 57 | # iface is down but an ip address is assigned
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| 58 | ip a|grep ${iface}$|grep -q inet && ip addr flush dev $iface >/dev/null 2>&1
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| 59 | ### end workaround ###
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| 60 | fi
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| 61 | return 1
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| 62 | }
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| 63 |
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| 64 | env_update() {
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| 65 | local lastmatch=""
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| 66 |
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| 67 | # get submode from calling hook script
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| 68 | SUBMODE=$(dirname $0|sed '{ s/\(.*\/\)*//; s/\.d$//}')
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| 69 |
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| 70 | # create env file
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| 71 | if ! [ -f "$ENVFILE" ]
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| 72 | then
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| 73 | [ -d $(dirname $ENVFILE) ] || mkdir -p $(dirname $ENVFILE)
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| 74 | echo "MDENT=0" >> $ENVFILE
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| 75 | echo "LASTLOG=0" >> $ENVFILE
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| 76 |
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| 77 | if [ "$IFACE" != "lo" ]
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| 78 | then
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| 79 | # search for existing lib files end evaluate iface type by using the appropriate
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| 80 | # function from lib file
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| 81 | for lib in ${LIBDIR}/* ${LIBDIR_OVERLAY}/*
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| 82 | do
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| 83 | if [ -f $lib ]
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| 84 | then
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| 85 | if (. $lib; iface_type 2>&-)
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| 86 | then
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| 87 | if [ "$lastmatch" != "" ]
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| 88 | then
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| 89 | if [ "$(basename $lib)" = "$(basename $lastmatch)" ]
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| 90 | then
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| 91 | logger "Warning: $lib overlays $lastmatch"
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| 92 | else
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| 93 | logger "Error: iface type $lib overlays $lastmatch"
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| 94 | fi
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| 95 | fi
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| 96 | lastmatch=$lib
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| 97 | fi
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| 98 | fi
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| 99 | done
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| 100 | fi
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| 101 |
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| 102 | if [ "$lastmatch" != "" ]
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| 103 | then
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| 104 | IFACE_TYPE=$(basename $lastmatch)
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| 105 | else
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| 106 | # if iface type isn't evaluated type "iface" is default
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| 107 | IFACE_TYPE="iface"
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| 108 | fi
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| 109 |
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| 110 | # update env
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| 111 | echo "IFACE_TYPE=${IFACE_TYPE}" >> $ENVFILE
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| 112 | fi
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| 113 |
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| 114 | . $ENVFILE
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| 115 | # expand $IFUPDOWN_ENV
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| 116 | for var in $IFUPDOWN_ENV; do
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| 117 | eval $var
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| 118 | done
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| 119 | pos_update
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| 120 | }
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| 121 |
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| 122 | pos_update() {
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| 123 | if [ "${MDENT:-0}" = "0" ]
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| 124 | then
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| 125 | STARTCOL=""
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| 126 | # MPREFIX=$MP_GOOD
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| 127 | else
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| 128 | STARTCOL="\x1B[$(expr ${MDENT:-0} \* ${TAB})C"
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| 129 | # MPREFIX="\x1B[3C"
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| 130 | fi
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| 131 | sed 's/MDENT=[0-9]*/'MDENT=$MDENT'/' -i $ENVFILE
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| 132 | }
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| 133 |
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| 134 |
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| 135 |
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| 136 |
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| 137 | ### main entry point ###
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| 138 |
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| 139 | CFG_PRINTING_OFF=0
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| 140 | CFG_SYSLOG_OFF=0
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| 141 | CFG_BUSYBOX_COMPAT=0
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| 142 | CFG_PREUP_PRINTING_OFF=0
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| 143 | CFG_UP_PRINTING_OFF=0
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| 144 | CFG_DOWN_PRINTING_OFF=0
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| 145 | CFG_POSTDOWN_PRINTING_OFF=0
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| 146 | CFG_IFUP_CHECK_OFF=0
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| 147 | CFG_IFDOWN_CHECK_OFF=0
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| 148 |
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| 149 | if [ -f /etc/conf.d/ifupdown ]; then
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| 150 | . /etc/conf.d/ifupdown
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| 151 | [ "$CFG_BUSYBOX_COMPAT" = "1" ] && exit 1
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| 152 | else
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| 153 | exit 1
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| 154 | fi
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| 155 |
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| 156 | ENVFILE="/tmp/ifupdown/env"
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| 157 | LIBDIR="/opt/ifupdown/lib"
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| 158 | LIBDIR_OVERLAY="/etc/network/lib"
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| 159 | IFACE_TYPE="none"
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| 160 |
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| 161 | alias exit="__exit"
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| 162 | alias ifup="__ifupdown ifup"
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| 163 | alias ifdown="__ifupdown ifdown"
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| 164 |
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| 165 | . /opt/ifupdown/bin/mfunctions.sh
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| 166 |
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| 167 | env_update
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| 168 |
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| 169 | if [ "$IFACE_TYPE" != "iface" ]
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| 170 | then
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| 171 | if [ -f "${LIBDIR_OVERLAY}/$IFACE_TYPE" ]
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| 172 | then
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| 173 | . ${LIBDIR_OVERLAY}/$IFACE_TYPE
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| 174 | elif [ -f "${LIBDIR}/$IFACE_TYPE" ]
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| 175 | then
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| 176 | . ${LIBDIR}/$IFACE_TYPE
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| 177 | else
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| 178 | logger "Error file not found and abort"
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| 179 | fi
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| 180 | fi
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| 181 |
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| 182 | [ "${H_ERR:=""}" = "1" ] && builtin exit 1
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| 183 |
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| 184 | case $SUBMODE in
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| 185 | if-pre-up)
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| 186 | config $CFG_PREUP_PRINTING_OFF || mstart
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| 187 |
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| 188 | if ! config $CFG_IFUP_CHECK_OFF && is_up
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| 189 | then
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| 190 | if ! config $CFG_PREUP_PRINTING_OFF
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| 191 | then
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| 192 | mup
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| 193 | mstate 1
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| 194 | minfo "Interface already up"
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| 195 | fi
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| 196 | exit 1
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| 197 | fi
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| 198 |
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| 199 | if_preup 2>&-
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| 200 | retval=$?
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| 201 | if [ "$retval" != "0" ]
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| 202 | then
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| 203 | [ $retval != "127" ] && exit 1
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| 204 | fi
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| 205 |
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| 206 | if ! config $CFG_PREUP_PRINTING_OFF
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| 207 | then
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| 208 | if [ "$METHOD" = "manual" ]
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| 209 | then
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| 210 | minfo "Can not bringing up ${IFACE}, method manual is set"
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| 211 | else
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| 212 | mup
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| 213 | fi
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| 214 | fi
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| 215 | ;;
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| 216 | if-up)
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| 217 | if ! config $CFG_UP_PRINTING_OFF
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| 218 | then
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| 219 | is_up
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| 220 | mstate $?
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| 221 | fi
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| 222 |
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| 223 | if_up 2>&-
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| 224 | retval=$?
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| 225 | if [ "$retval" != "0" ]
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| 226 | then
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| 227 | [ $retval != "127" ] && exit 1
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| 228 | fi
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| 229 | if [ -f /tmp/ifupdown/pcode/${IFACE}/postup ]
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| 230 | then
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| 231 | . /tmp/ifupdown/pcode/${IFACE}/postup
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| 232 | #rm /tmp/ifupdown/pcode/${IFACE}/postup
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| 233 | fi
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| 234 | ;;
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| 235 | if-down)
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| 236 | config $CFG_DOWN_PRINTING_OFF || mstop
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| 237 |
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| 238 | if ! config $CFG_IFDOWN_CHECK_OFF && ! is_up
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| 239 | then
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| 240 | if ! config $CFG_DOWN_PRINTING_OFF
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| 241 | then
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| 242 | mdown
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| 243 | mstate 1
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| 244 | minfo "Can not bringing down, interface $IFACE is down."
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| 245 | fi
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| 246 | exit 1
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| 247 | fi
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| 248 |
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| 249 | if [ -f /tmp/ifupdown/pcode/${IFACE}/predown ]
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| 250 | then
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| 251 | . /tmp/ifupdown/pcode/${IFACE}/predown
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| 252 | #rm /tmp/ifupdown/pcode/${IFACE}/predown
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| 253 | fi
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| 254 |
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| 255 | if_down 2>&-
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| 256 | retval=$?
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| 257 | if [ "$retval" != "0" ]
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| 258 | then
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| 259 | [ $retval != "127" ] && exit 1
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| 260 | fi
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| 261 |
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| 262 | if ! config $CFG_DOWN_PRINTING_OFF
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| 263 | then
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| 264 | if [ "$METHOD" = "manual" ]
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| 265 | then
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| 266 | minfo "Can not bringing down ${IFACE}, method manual is set"
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| 267 | else
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| 268 | mdown
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| 269 | fi
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| 270 | fi
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| 271 | ;;
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| 272 | if-post-down)
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| 273 | if ! config $CFG_POSTDOWN_PRINTING_OFF
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| 274 | then
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| 275 | ! is_up
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| 276 | mstate $?
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| 277 | fi
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| 278 |
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| 279 | if_postdown 2>&-
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| 280 | retval=$?
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| 281 | if [ "$retval" != "0" ]
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| 282 | then
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| 283 | [ $retval != "127" ] && exit 1
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| 284 | fi
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| 285 |
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| 286 | ;;
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| 287 | esac
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| 288 |
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| 289 | return 0
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| 290 |
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| 291 | # vim:ts=4
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