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

   1 #!/bin/sh
   2 # Copyright (C) 2006-2014 OpenWrt.org
   3 # Copyright (C) 2006 Fokus Fraunhofer <carsten.tittel@fokus.fraunhofer.de>
   4 # Copyright (C) 2010 Vertical Communications
   5
   6
   7 debug () {
   8         ${DEBUG:-:} "$@"
   9 }
  10
  11 # newline
  12 N="
  13 "
  14
  15 _C=0
  16 NO_EXPORT=1
  17 LOAD_STATE=1
  18 LIST_SEP=" "
  19
  20 append() {
  21         local var="$1"
  22         local value="$2"
  23         local sep="${3:- }"
  24
  25         eval "export ${NO_EXPORT:+-n} -- \"$var=\${$var:+\${$var}\${value:+\$sep}}\$value\""
  26 }
  27
  28 list_contains() {
  29         local var="$1"
  30         local str="$2"
  31         local val
  32
  33         eval "val=\" \${$var} \""
  34         [ "${val%% $str *}" != "$val" ]
  35 }
  36
  37 config_load() {
  38         [ -n "$IPKG_INSTROOT" ] && return 0
  39         uci_load "$@"
  40 }
  41
  42 reset_cb() {
  43         config_cb() { return 0; }
  44         option_cb() { return 0; }
  45         list_cb() { return 0; }
  46 }
  47 reset_cb
  48
  49 package() {
  50         return 0
  51 }
  52
  53 config () {
  54         local cfgtype="$1"
  55         local name="$2"
  56
  57         export ${NO_EXPORT:+-n} CONFIG_NUM_SECTIONS=$(($CONFIG_NUM_SECTIONS + 1))
  58         name="${name:-cfg$CONFIG_NUM_SECTIONS}"
  59         append CONFIG_SECTIONS "$name"
  60         [ -n "$NO_CALLBACK" ] || config_cb "$cfgtype" "$name"
  61         export ${NO_EXPORT:+-n} CONFIG_SECTION="$name"
  62         export ${NO_EXPORT:+-n} "CONFIG_${CONFIG_SECTION}_TYPE=$cfgtype"
  63 }
  64
  65 option () {
  66         local varname="$1"; shift
  67         local value="$*"
  68
  69         export ${NO_EXPORT:+-n} "CONFIG_${CONFIG_SECTION}_${varname}=$value"
  70         [ -n "$NO_CALLBACK" ] || option_cb "$varname" "$*"
  71 }
  72
  73 list() {
  74         local varname="$1"; shift
  75         local value="$*"
  76         local len
  77
  78         config_get len "$CONFIG_SECTION" "${varname}_LENGTH" 0
  79         [ $len = 0 ] && append CONFIG_LIST_STATE "${CONFIG_SECTION}_${varname}"
  80         len=$(($len + 1))
  81         config_set "$CONFIG_SECTION" "${varname}_ITEM$len" "$value"
  82         config_set "$CONFIG_SECTION" "${varname}_LENGTH" "$len"
  83         append "CONFIG_${CONFIG_SECTION}_${varname}" "$value" "$LIST_SEP"
  84         list_cb "$varname" "$*"
  85 }
  86
  87 config_unset() {
  88         config_set "$1" "$2" ""
  89 }
  90
  91 # config_get <variable> <section> <option> [<default>]
  92 # config_get <section> <option>
  93 config_get() {
  94         case "$3" in
  95                 "") eval echo "\${CONFIG_${1}_${2}:-\${4}}";;
  96                 *)  eval export ${NO_EXPORT:+-n} -- "${1}=\${CONFIG_${2}_${3}:-\${4}}";;
  97         esac
  98 }
  99
 100 # config_get_bool <variable> <section> <option> [<default>]
 101 config_get_bool() {
 102         local _tmp
 103         config_get _tmp "$2" "$3" "$4"
 104         case "$_tmp" in
 105                 1|on|true|yes|enabled) _tmp=1;;
 106                 0|off|false|no|disabled) _tmp=0;;
 107                 *) _tmp="$4";;
 108         esac
 109         export ${NO_EXPORT:+-n} "$1=$_tmp"
 110 }
 111
 112 config_set() {
 113         local section="$1"
 114         local option="$2"
 115         local value="$3"
 116         local old_section="$CONFIG_SECTION"
 117
 118         CONFIG_SECTION="$section"
 119         option "$option" "$value"
 120         CONFIG_SECTION="$old_section"
 121 }
 122
 123 config_foreach() {
 124         local ___function="$1"
 125         [ "$#" -ge 1 ] && shift
 126         local ___type="$1"
 127         [ "$#" -ge 1 ] && shift
 128         local section cfgtype
 129
 130         [ -z "$CONFIG_SECTIONS" ] && return 0
 131         for section in ${CONFIG_SECTIONS}; do
 132                 config_get cfgtype "$section" TYPE
 133                 [ -n "$___type" -a "x$cfgtype" != "x$___type" ] && continue
 134                 eval "$___function \"\$section\" \"\$@\""
 135         done
 136 }
 137
 138 config_list_foreach() {
 139         [ "$#" -ge 3 ] || return 0
 140         local section="$1"; shift
 141         local option="$1"; shift
 142         local function="$1"; shift
 143         local val
 144         local len
 145         local c=1
 146
 147         config_get len "${section}" "${option}_LENGTH"
 148         [ -z "$len" ] && return 0
 149         while [ $c -le "$len" ]; do
 150                 config_get val "${section}" "${option}_ITEM$c"
 151                 eval "$function \"\$val\" \"\$@\""
 152                 c="$(($c + 1))"
 153         done
 154 }
 155
 156 insert_modules() {
 157         for m in $*; do
 158                 if [ -f /etc/modules.d/$m ]; then
 159                         sed 's/^[^#]/insmod &/' /etc/modules.d/$m | ash 2>&- || :
 160                 else
 161                         modprobe $m
 162                 fi
 163         done
 164 }
 165
 166 default_prerm() {
 167         local name
 168         name=$(basename ${1%.*})
 169         [ -f /usr/lib/opkg/info/${name}.prerm-pkg ] && . /usr/lib/opkg/info/${name}.prerm-pkg
 170         for i in `cat /usr/lib/opkg/info/${name}.list | grep "^/etc/init.d/"`; do
 171                 $i disable
 172                 $i stop
 173         done
 174 }
 175
 176 add_group_and_user() {
 177         local pkgname="$1"
 178         local rusers="$(sed -ne 's/^Require-User: *//p' $root/usr/lib/opkg/info/${pkgname}.control 2>/dev/null)"
 179
 180         if [ -n "$rusers" ]; then
 181                 local tuple oIFS="$IFS"
 182                 for tuple in $rusers; do
 183                         local uid gid uname gname
 184
 185                         IFS=":"
 186                         set -- $tuple; uname="$1"; gname="$2"
 187                         IFS="="
 188                         set -- $uname; uname="$1"; uid="$2"
 189                         set -- $gname; gname="$1"; gid="$2"
 190                         IFS="$oIFS"
 191
 192                         if [ -n "$gname" ] && [ -n "$gid" ]; then
 193                                 group_exists "$gname" || group_add "$gname" "$gid"
 194                         elif [ -n "$gname" ]; then
 195                                 group_add_next "$gname"; gid=$?
 196                         fi
 197
 198                         if [ -n "$uname" ]; then
 199                                 user_exists "$uname" || user_add "$uname" "$uid" "$gid"
 200                         fi
 201
 202                         if [ -n "$uname" ] && [ -n "$gname" ]; then
 203                                 group_add_user "$gname" "$uname"
 204                         fi
 205
 206                         unset uid gid uname gname
 207                 done
 208         fi
 209 }
 210
 211 default_postinst() {
 212         local root="${IPKG_INSTROOT}"
 213         local pkgname="$(basename ${1%.*})"
 214         local ret=0
 215
 216         add_group_and_user "${pkgname}"
 217
 218         if [ -f "$root/usr/lib/opkg/info/${pkgname}.postinst-pkg" ]; then
 219                 ( . "$root/usr/lib/opkg/info/${pkgname}.postinst-pkg" )
 220                 ret=$?
 221         fi
 222
 223         if [ -z "$root" ] && grep -q -s "^/etc/uci-defaults/" "/usr/lib/opkg/info/${pkgname}.list"; then
 224                 . /lib/functions/system.sh
 225                 [ -d /tmp/.uci ] || mkdir -p /tmp/.uci
 226                 for i in $(sed -ne 's!^/etc/uci-defaults/!!p' "/usr/lib/opkg/info/${pkgname}.list"); do (
 227                         cd /etc/uci-defaults
 228                         [ -f "$i" ] && . "$i" && rm -f "$i"
 229                 ) done
 230                 uci commit
 231         fi
 232
 233         [ -n "$root" ] || rm -f /tmp/luci-indexcache 2>/dev/null
 234
 235         if [ "$PKG_UPGRADE" != "1" ]; then
 236                 local shell="$(which bash)"
 237                 for i in $(grep -s "^/etc/init.d/" "$root/usr/lib/opkg/info/${pkgname}.list"); do
 238                         if [ -n "$root" ]; then
 239                                 ${shell:-/bin/sh} "$root/etc/rc.common" "$root$i" enable
 240                         else
 241                                 "$i" enable
 242                                 "$i" start
 243                         fi
 244                 done
 245         fi
 246
 247         return $ret
 248 }
 249
 250 include() {
 251         local file
 252
 253         for file in $(ls $1/*.sh 2>/dev/null); do
 254                 . $file
 255         done
 256 }
 257
 258 find_mtd_index() {
 259         local PART="$(grep "\"$1\"" /proc/mtd | awk -F: '{print $1}')"
 260         local INDEX="${PART##mtd}"
 261
 262         echo ${INDEX}
 263 }
 264
 265 find_mtd_part() {
 266         local INDEX=$(find_mtd_index "$1")
 267         local PREFIX=/dev/mtdblock
 268
 269         [ -d /dev/mtdblock ] && PREFIX=/dev/mtdblock/
 270         echo "${INDEX:+$PREFIX$INDEX}"
 271 }
 272
 273 group_add() {
 274         local name="$1"
 275         local gid="$2"
 276         local rc
 277         [ -f "${IPKG_INSTROOT}/etc/group" ] || return 1
 278         [ -n "$IPKG_INSTROOT" ] || lock /var/lock/group
 279         echo "${name}:x:${gid}:" >> ${IPKG_INSTROOT}/etc/group
 280         rc=$?
 281         [ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/group
 282         return $rc
 283 }
 284
 285 group_exists() {
 286         grep -qs "^${1}:" ${IPKG_INSTROOT}/etc/group
 287 }
 288
 289 group_add_next() {
 290         local gid gids
 291         gid=$(grep -s "^${1}:" ${IPKG_INSTROOT}/etc/group | cut -d: -f3)
 292         [ -n "$gid" ] && return $gid
 293         gids=$(cat ${IPKG_INSTROOT}/etc/group | cut -d: -f3)
 294         gid=100
 295         while [ -n "$(echo $gids | grep $gid)" ] ; do
 296                 gid=$((gid + 1))
 297         done
 298         group_add $1 $gid
 299         return $gid
 300 }
 301
 302 group_add_user() {
 303         local grp delim=","
 304         grp=$(grep -s "^${1}:" ${IPKG_INSTROOT}/etc/group)
 305         [ -z "$(echo $grp | cut -d: -f4 | grep $2)" ] || return
 306         [ -n "$(echo $grp | grep ":$")" ] && delim=""
 307         [ -n "$IPKG_INSTROOT" ] || lock /var/lock/passwd
 308         sed -i "s/$grp/$grp$delim$2/g" ${IPKG_INSTROOT}/etc/group
 309         [ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/passwd
 310 }
 311
 312 user_add() {
 313         local name="${1}"
 314         local uid="${2}"
 315         local gid="${3}"
 316         local desc="${4:-$1}"
 317         local home="${5:-/var/run/$1}"
 318         local shell="${6:-/bin/false}"
 319         local rc
 320         [ -z "$uid" ] && {
 321                 uids=$(cat ${IPKG_INSTROOT}/etc/passwd | cut -d: -f3)
 322                 uid=100
 323                 while [ -n "$(echo $uids | grep $uid)" ] ; do
 324                         uid=$((uid + 1))
 325                 done
 326         }
 327         [ -z "$gid" ] && gid=$uid
 328         [ -f "${IPKG_INSTROOT}/etc/passwd" ] || return 1
 329         [ -n "$IPKG_INSTROOT" ] || lock /var/lock/passwd
 330         echo "${name}:x:${uid}:${gid}:${desc}:${home}:${shell}" >> ${IPKG_INSTROOT}/etc/passwd
 331         echo "${name}:x:0:0:99999:7:::" >> ${IPKG_INSTROOT}/etc/shadow
 332         rc=$?
 333         [ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/passwd
 334         return $rc
 335 }
 336
 337 user_exists() {
 338         grep -qs "^${1}:" ${IPKG_INSTROOT}/etc/passwd
 339 }
 340
 341 [ -z "$IPKG_INSTROOT" -a -f /lib/config/uci.sh ] && . /lib/config/uci.sh