openwrt/package/base-files/files/lib/functions.sh

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# Copyright (C) 2006-2014 OpenWrt.org
# Copyright (C) 2006 Fokus Fraunhofer <carsten.tittel@fokus.fraunhofer.de>
# Copyright (C) 2010 Vertical Communications
debug () {
${DEBUG:-:} "$@"
}
# newline
N="
"
_C=0
NO_EXPORT=1
LOAD_STATE=1
LIST_SEP=" "
# xor multiple hex values of the same length
xor() {
local val
local ret="0x$1"
local retlen=${#1}
shift
while [ -n "$1" ]; do
val="0x$1"
ret=$((ret ^ val))
shift
done
printf "%0${retlen}x" "$ret"
}
data_2bin() {
local data=$1
local len=${#1}
local bin_data
for i in $(seq 0 2 $(($len - 1))); do
bin_data="${bin_data}\x${data:i:2}"
done
echo -ne $bin_data
}
data_2xor_val() {
local data=$1
local len=${#1}
local xor_data
for i in $(seq 0 4 $(($len - 1))); do
xor_data="${xor_data}${data:i:4} "
done
echo -n ${xor_data:0:-1}
}
append() {
local var="$1"
local value="$2"
local sep="${3:- }"
eval "export ${NO_EXPORT:+-n} -- \"$var=\${$var:+\${$var}\${value:+\$sep}}\$value\""
}
prepend() {
local var="$1"
local value="$2"
local sep="${3:- }"
eval "export ${NO_EXPORT:+-n} -- \"$var=\$value\${$var:+\${sep}\${$var}}\""
}
list_contains() {
local var="$1"
local str="$2"
local val
eval "val=\" \${$var} \""
[ "${val%% $str *}" != "$val" ]
}
config_load() {
[ -n "$IPKG_INSTROOT" ] && return 0
uci_load "$@"
}
reset_cb() {
config_cb() { return 0; }
option_cb() { return 0; }
list_cb() { return 0; }
}
reset_cb
package() {
return 0
}
config () {
local cfgtype="$1"
local name="$2"
export ${NO_EXPORT:+-n} CONFIG_NUM_SECTIONS=$((CONFIG_NUM_SECTIONS + 1))
name="${name:-cfg$CONFIG_NUM_SECTIONS}"
append CONFIG_SECTIONS "$name"
export ${NO_EXPORT:+-n} CONFIG_SECTION="$name"
config_set "$CONFIG_SECTION" "TYPE" "${cfgtype}"
[ -n "$NO_CALLBACK" ] || config_cb "$cfgtype" "$name"
}
option () {
local varname="$1"; shift
local value="$*"
config_set "$CONFIG_SECTION" "${varname}" "${value}"
[ -n "$NO_CALLBACK" ] || option_cb "$varname" "$*"
}
list() {
local varname="$1"; shift
local value="$*"
local len
config_get len "$CONFIG_SECTION" "${varname}_LENGTH" 0
[ $len = 0 ] && append CONFIG_LIST_STATE "${CONFIG_SECTION}_${varname}"
len=$((len + 1))
config_set "$CONFIG_SECTION" "${varname}_ITEM$len" "$value"
config_set "$CONFIG_SECTION" "${varname}_LENGTH" "$len"
append "CONFIG_${CONFIG_SECTION}_${varname}" "$value" "$LIST_SEP"
[ -n "$NO_CALLBACK" ] || list_cb "$varname" "$*"
}
config_unset() {
config_set "$1" "$2" ""
}
# config_get <variable> <section> <option> [<default>]
# config_get <section> <option>
config_get() {
case "$2${3:-$1}" in
*[!A-Za-z0-9_]*) : ;;
*)
case "$3" in
"") eval echo "\"\${CONFIG_${1}_${2}:-\${4}}\"";;
*) eval export ${NO_EXPORT:+-n} -- "${1}=\${CONFIG_${2}_${3}:-\${4}}";;
esac
;;
esac
}
# get_bool <value> [<default>]
get_bool() {
local _tmp="$1"
case "$_tmp" in
1|on|true|yes|enabled) _tmp=1;;
0|off|false|no|disabled) _tmp=0;;
*) _tmp="$2";;
esac
echo -n "$_tmp"
}
# config_get_bool <variable> <section> <option> [<default>]
config_get_bool() {
local _tmp
config_get _tmp "$2" "$3" "$4"
_tmp="$(get_bool "$_tmp" "$4")"
export ${NO_EXPORT:+-n} "$1=$_tmp"
}
config_set() {
local section="$1"
local option="$2"
local value="$3"
export ${NO_EXPORT:+-n} "CONFIG_${section}_${option}=${value}"
}
config_foreach() {
local ___function="$1"
[ "$#" -ge 1 ] && shift
local ___type="$1"
[ "$#" -ge 1 ] && shift
local section cfgtype
[ -z "$CONFIG_SECTIONS" ] && return 0
for section in ${CONFIG_SECTIONS}; do
config_get cfgtype "$section" TYPE
[ -n "$___type" ] && [ "x$cfgtype" != "x$___type" ] && continue
eval "$___function \"\$section\" \"\$@\""
done
}
config_list_foreach() {
[ "$#" -ge 3 ] || return 0
local section="$1"; shift
local option="$1"; shift
local function="$1"; shift
local val
local len
local c=1
config_get len "${section}" "${option}_LENGTH"
[ -z "$len" ] && return 0
while [ $c -le "$len" ]; do
config_get val "${section}" "${option}_ITEM$c"
eval "$function \"\$val\" \"\$@\""
c="$((c + 1))"
done
}
default_prerm() {
local root="${IPKG_INSTROOT}"
[ -z "$pkgname" ] && local pkgname="$(basename ${1%.*})"
local ret=0
local filelist="${root}/usr/lib/opkg/info/${pkgname}.list"
[ -f "$root/lib/apk/packages/${pkgname}.list" ] && filelist="$root/lib/apk/packages/${pkgname}.list"
if [ -f "$root/usr/lib/opkg/info/${pkgname}.prerm-pkg" ]; then
( . "$root/usr/lib/opkg/info/${pkgname}.prerm-pkg" )
ret=$?
fi
local shell="$(command -v bash)"
for i in $(grep -s "^/etc/init.d/" "$filelist"); do
if [ -n "$root" ]; then
${shell:-/bin/sh} "$root/etc/rc.common" "$root$i" disable
else
if [ "$PKG_UPGRADE" != "1" ]; then
"$i" disable
fi
"$i" stop
fi
done
return $ret
}
add_group_and_user() {
[ -z "$pkgname" ] && local pkgname="$(basename ${1%.*})"
local rusers="$(sed -ne 's/^Require-User: *//p' $root/usr/lib/opkg/info/${pkgname}.control 2>/dev/null)"
if [ -f "$root/lib/apk/packages/${pkgname}.rusers" ]; then
local rusers="$(cat $root/lib/apk/packages/${pkgname}.rusers)"
fi
if [ -n "$rusers" ]; then
local tuple oIFS="$IFS"
for tuple in $rusers; do
local uid gid uname gname addngroups addngroup addngname addngid
IFS=":"
set -- $tuple; uname="$1"; gname="$2"; addngroups="$3"
IFS="="
set -- $uname; uname="$1"; uid="$2"
set -- $gname; gname="$1"; gid="$2"
IFS="$oIFS"
if [ -n "$gname" ] && [ -n "$gid" ]; then
group_exists "$gname" || group_add "$gname" "$gid"
elif [ -n "$gname" ]; then
gid="$(group_add_next "$gname")"
fi
if [ -n "$uname" ]; then
user_exists "$uname" || user_add "$uname" "$uid" "$gid"
fi
if [ -n "$uname" ] && [ -n "$gname" ]; then
group_add_user "$gname" "$uname"
fi
if [ -n "$uname" ] && [ -n "$addngroups" ]; then
oIFS="$IFS"
IFS=","
for addngroup in $addngroups ; do
IFS="="
set -- $addngroup; addngname="$1"; addngid="$2"
if [ -n "$addngid" ]; then
group_exists "$addngname" || group_add "$addngname" "$addngid"
else
group_add_next "$addngname"
fi
group_add_user "$addngname" "$uname"
done
IFS="$oIFS"
fi
unset uid gid uname gname addngroups addngroup addngname addngid
done
fi
}
update_alternatives() {
local root="${IPKG_INSTROOT}"
local action="$1"
local pkgname="$2"
if [ -f "$root/lib/apk/packages/${pkgname}.alternatives" ]; then
for pkg_alt in $(cat $root/lib/apk/packages/${pkgname}.alternatives); do
local best_prio=0;
local best_src="/bin/busybox";
pkg_prio=${pkg_alt%%:*};
pkg_target=${pkg_alt#*:};
pkg_target=${pkg_target%:*};
pkg_src=${pkg_alt##*:};
if [ -e "$root/$target" ]; then
for alts in $root/lib/apk/packages/*.alternatives; do
for alt in $(cat $alts); do
prio=${alt%%:*};
target=${alt#*:};
target=${target%:*};
src=${alt##*:};
if [ "$target" = "$pkg_target" ] &&
[ "$src" != "$pkg_src" ] &&
[ "$best_prio" -lt "$prio" ]; then
best_prio=$prio;
best_src=$src;
fi
done
done
fi
case "$action" in
install)
if [ "$best_prio" -lt "$pkg_prio" ]; then
ln -sf "$pkg_src" "$root/$pkg_target"
echo "add alternative: $pkg_target -> $pkg_src"
fi
;;
remove)
if [ "$best_prio" -lt "$pkg_prio" ]; then
ln -sf "$best_src" "$root/$pkg_target"
echo "add alternative: $pkg_target -> $best_src"
fi
;;
esac
done
fi
}
default_postinst() {
local root="${IPKG_INSTROOT}"
[ -z "$pkgname" ] && local pkgname="$(basename ${1%.*})"
local filelist="${root}/usr/lib/opkg/info/${pkgname}.list"
[ -f "$root/lib/apk/packages/${pkgname}.list" ] && filelist="$root/lib/apk/packages/${pkgname}.list"
local ret=0
if [ -e "${root}/usr/lib/opkg/info/${pkgname}.list" ]; then
filelist="${root}/usr/lib/opkg/info/${pkgname}.list"
add_group_and_user "${pkgname}"
fi
if [ -e "${root}/lib/apk/packages/${pkgname}.list" ]; then
filelist="${root}/lib/apk/packages/${pkgname}.list"
update_alternatives install "${pkgname}"
fi
if [ -d "$root/rootfs-overlay" ]; then
cp -R $root/rootfs-overlay/. $root/
rm -fR $root/rootfs-overlay/
fi
if [ -z "$root" ]; then
if grep -m1 -q -s "^/etc/modules.d/" "$filelist"; then
kmodloader
fi
if grep -m1 -q -s "^/etc/sysctl.d/" "$filelist"; then
/etc/init.d/sysctl restart
fi
if grep -m1 -q -s "^/etc/uci-defaults/" "$filelist"; then
[ -d /tmp/.uci ] || mkdir -p /tmp/.uci
for i in $(grep -s "^/etc/uci-defaults/" "$filelist"); do
( [ -f "$i" ] && cd "$(dirname $i)" && . "$i" ) && rm -f "$i"
done
uci commit
fi
rm -f /tmp/luci-indexcache
fi
if [ -f "$root/usr/lib/opkg/info/${pkgname}.postinst-pkg" ]; then
( . "$root/usr/lib/opkg/info/${pkgname}.postinst-pkg" )
ret=$?
fi
local shell="$(command -v bash)"
for i in $(grep -s "^/etc/init.d/" "$filelist"); do
if [ -n "$root" ]; then
${shell:-/bin/sh} "$root/etc/rc.common" "$root$i" enable
else
if [ "$PKG_UPGRADE" != "1" ]; then
"$i" enable
fi
"$i" start
fi
done
return $ret
}
include() {
local file
for file in $(ls $1/*.sh 2>/dev/null); do
. $file
done
}
ipcalc() {
set -- $(ipcalc.sh "$@")
[ $? -eq 0 ] && export -- "$@"
}
find_mtd_index() {
local PART="$(grep "\"$1\"" /proc/mtd | awk -F: '{print $1}')"
local INDEX="${PART##mtd}"
echo ${INDEX}
}
find_mtd_part() {
local INDEX=$(find_mtd_index "$1")
local PREFIX=/dev/mtdblock
[ -d /dev/mtdblock ] && PREFIX=/dev/mtdblock/
echo "${INDEX:+$PREFIX$INDEX}"
}
find_mmc_part() {
local DEVNAME PARTNAME ROOTDEV
if grep -q "$1" /proc/mtd; then
echo "" && return 0
fi
if [ -n "$2" ]; then
ROOTDEV="$2"
else
ROOTDEV="mmcblk*"
fi
for DEVNAME in /sys/block/$ROOTDEV/mmcblk*p*; do
PARTNAME="$(grep PARTNAME ${DEVNAME}/uevent | cut -f2 -d'=')"
[ "$PARTNAME" = "$1" ] && echo "/dev/$(basename $DEVNAME)" && return 0
done
}
group_add() {
local name="$1"
local gid="$2"
local rc
[ -f "${IPKG_INSTROOT}/etc/group" ] || return 1
[ -n "$IPKG_INSTROOT" ] || lock /var/lock/group
echo "${name}:x:${gid}:" >> ${IPKG_INSTROOT}/etc/group
[ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/group
}
group_exists() {
grep -qs "^${1}:" ${IPKG_INSTROOT}/etc/group
}
group_add_next() {
local gid gids
gid=$(grep -s "^${1}:" ${IPKG_INSTROOT}/etc/group | cut -d: -f3)
if [ -n "$gid" ]; then
echo $gid
return
fi
gids=$(cut -d: -f3 ${IPKG_INSTROOT}/etc/group)
gid=32768
while echo "$gids" | grep -q "^$gid$"; do
gid=$((gid + 1))
done
group_add $1 $gid
echo $gid
}
group_add_user() {
local grp delim=","
grp=$(grep -s "^${1}:" ${IPKG_INSTROOT}/etc/group)
echo "$grp" | cut -d: -f4 | grep -q $2 && return
echo "$grp" | grep -q ":$" && delim=""
[ -n "$IPKG_INSTROOT" ] || lock /var/lock/passwd
sed -i "s/$grp/$grp$delim$2/g" ${IPKG_INSTROOT}/etc/group
if [ -z "$IPKG_INSTROOT" ] && [ -x /usr/sbin/selinuxenabled ] && selinuxenabled; then
restorecon /etc/group
fi
[ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/passwd
}
user_add() {
local name="${1}"
local uid="${2}"
local gid="${3}"
local desc="${4:-$1}"
local home="${5:-/var/run/$1}"
local shell="${6:-/bin/false}"
local rc
[ -z "$uid" ] && {
uids=$(cut -d: -f3 ${IPKG_INSTROOT}/etc/passwd)
uid=32768
while echo "$uids" | grep -q "^$uid$"; do
uid=$((uid + 1))
done
}
[ -z "$gid" ] && gid=$uid
[ -f "${IPKG_INSTROOT}/etc/passwd" ] || return 1
[ -n "$IPKG_INSTROOT" ] || lock /var/lock/passwd
echo "${name}:x:${uid}:${gid}:${desc}:${home}:${shell}" >> ${IPKG_INSTROOT}/etc/passwd
echo "${name}:x:0:0:99999:7:::" >> ${IPKG_INSTROOT}/etc/shadow
[ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/passwd
}
user_exists() {
grep -qs "^${1}:" ${IPKG_INSTROOT}/etc/passwd
}
board_name() {
[ -e /tmp/sysinfo/board_name ] && cat /tmp/sysinfo/board_name || echo "generic"
}
cmdline_get_var() {
local var=$1
local cmdlinevar tmp
for cmdlinevar in $(cat /proc/cmdline); do
tmp=${cmdlinevar##${var}}
[ "=" = "${tmp:0:1}" ] && echo ${tmp:1}
done
}
[ -z "$IPKG_INSTROOT" ] && [ -f /lib/config/uci.sh ] && . /lib/config/uci.sh || true