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 $m
 162                 fi
 163         done
 164 }
 165
 166 default_prerm() {
 167         local root="${IPKG_INSTROOT}"
 168         local name
 169
 170         name=$(basename ${1%.*})
 171         [ -f "$root/usr/lib/opkg/info/${name}.prerm-pkg" ] && . "$root/usr/lib/opkg/info/${name}.prerm-pkg"
 172
 173         local shell="$(which bash)"
 174         for i in `cat "$root/usr/lib/opkg/info/${name}.list" | grep "^/etc/init.d/"`; do
 175                 if [ -n "$root" ]; then
 176                         ${shell:-/bin/sh} "$root/etc/rc.common" "$root$i" disable
 177                 else
 178                         if [ "$PKG_UPGRADE" != "1" ]; then
 179                                 "$i" disable
 180                         fi
 181                         "$i" stop || /bin/true
 182                 fi
 183         done
 184 }
 185
 186 add_group_and_user() {
 187         local pkgname="$1"
 188         local rusers="$(sed -ne 's/^Require-User: *//p' $root/usr/lib/opkg/info/${pkgname}.control 2>/dev/null)"
 189
 190         if [ -n "$rusers" ]; then
 191                 local tuple oIFS="$IFS"
 192                 for tuple in $rusers; do
 193                         local uid gid uname gname
 194
 195                         IFS=":"
 196                         set -- $tuple; uname="$1"; gname="$2"
 197                         IFS="="
 198                         set -- $uname; uname="$1"; uid="$2"
 199                         set -- $gname; gname="$1"; gid="$2"
 200                         IFS="$oIFS"
 201
 202                         if [ -n "$gname" ] && [ -n "$gid" ]; then
 203                                 group_exists "$gname" || group_add "$gname" "$gid"
 204                         elif [ -n "$gname" ]; then
 205                                 group_add_next "$gname"; gid=$?
 206                         fi
 207
 208                         if [ -n "$uname" ]; then
 209                                 user_exists "$uname" || user_add "$uname" "$uid" "$gid"
 210                         fi
 211
 212                         if [ -n "$uname" ] && [ -n "$gname" ]; then
 213                                 group_add_user "$gname" "$uname"
 214                         fi
 215
 216                         unset uid gid uname gname
 217                 done
 218         fi
 219 }
 220
 221 default_postinst() {
 222         local root="${IPKG_INSTROOT}"
 223         local pkgname="$(basename ${1%.*})"
 224         local ret=0
 225
 226         add_group_and_user "${pkgname}"
 227
 228         if [ -f "$root/usr/lib/opkg/info/${pkgname}.postinst-pkg" ]; then
 229                 ( . "$root/usr/lib/opkg/info/${pkgname}.postinst-pkg" )
 230                 ret=$?
 231         fi
 232
 233         if [ -d "$root/rootfs-overlay" ]; then
 234                 cp -R $root/rootfs-overlay/. $root/
 235                 rm -fR $root/rootfs-overlay/
 236         fi
 237
 238         if [ -z "$root" ] && grep -q -s "^/etc/uci-defaults/" "/usr/lib/opkg/info/${pkgname}.list"; then
 239                 . /lib/functions/system.sh
 240                 [ -d /tmp/.uci ] || mkdir -p /tmp/.uci
 241                 for i in $(sed -ne 's!^/etc/uci-defaults/!!p' "/usr/lib/opkg/info/${pkgname}.list"); do (
 242                         cd /etc/uci-defaults
 243                         [ -f "$i" ] && . "$i" && rm -f "$i"
 244                 ) done
 245                 uci commit
 246         fi
 247
 248         [ -n "$root" ] || rm -f /tmp/luci-indexcache 2>/dev/null
 249
 250         local shell="$(which bash)"
 251         for i in $(grep -s "^/etc/init.d/" "$root/usr/lib/opkg/info/${pkgname}.list"); do
 252                 if [ -n "$root" ]; then
 253                         ${shell:-/bin/sh} "$root/etc/rc.common" "$root$i" enable
 254                 else
 255                         if [ "$PKG_UPGRADE" != "1" ]; then
 256                                 "$i" enable
 257                         fi
 258                         "$i" start
 259                 fi
 260         done
 261
 262         return $ret
 263 }
 264
 265 include() {
 266         local file
 267
 268         for file in $(ls $1/*.sh 2>/dev/null); do
 269                 . $file
 270         done
 271 }
 272
 273 find_mtd_index() {
 274         local PART="$(grep "\"$1\"" /proc/mtd | awk -F: '{print $1}')"
 275         local INDEX="${PART##mtd}"
 276
 277         echo ${INDEX}
 278 }
 279
 280 find_mtd_part() {
 281         local INDEX=$(find_mtd_index "$1")
 282         local PREFIX=/dev/mtdblock
 283
 284         [ -d /dev/mtdblock ] && PREFIX=/dev/mtdblock/
 285         echo "${INDEX:+$PREFIX$INDEX}"
 286 }
 287
 288 group_add() {
 289         local name="$1"
 290         local gid="$2"
 291         local rc
 292         [ -f "${IPKG_INSTROOT}/etc/group" ] || return 1
 293         [ -n "$IPKG_INSTROOT" ] || lock /var/lock/group
 294         echo "${name}:x:${gid}:" >> ${IPKG_INSTROOT}/etc/group
 295         rc=$?
 296         [ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/group
 297         return $rc
 298 }
 299
 300 group_exists() {
 301         grep -qs "^${1}:" ${IPKG_INSTROOT}/etc/group
 302 }
 303
 304 group_add_next() {
 305         local gid gids
 306         gid=$(grep -s "^${1}:" ${IPKG_INSTROOT}/etc/group | cut -d: -f3)
 307         [ -n "$gid" ] && return $gid
 308         gids=$(cat ${IPKG_INSTROOT}/etc/group | cut -d: -f3)
 309         gid=100
 310         while [ -n "$(echo $gids | grep $gid)" ] ; do
 311                 gid=$((gid + 1))
 312         done
 313         group_add $1 $gid
 314         return $gid
 315 }
 316
 317 group_add_user() {
 318         local grp delim=","
 319         grp=$(grep -s "^${1}:" ${IPKG_INSTROOT}/etc/group)
 320         [ -z "$(echo $grp | cut -d: -f4 | grep $2)" ] || return
 321         [ -n "$(echo $grp | grep ":$")" ] && delim=""
 322         [ -n "$IPKG_INSTROOT" ] || lock /var/lock/passwd
 323         sed -i "s/$grp/$grp$delim$2/g" ${IPKG_INSTROOT}/etc/group
 324         [ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/passwd
 325 }
 326
 327 user_add() {
 328         local name="${1}"
 329         local uid="${2}"
 330         local gid="${3}"
 331         local desc="${4:-$1}"
 332         local home="${5:-/var/run/$1}"
 333         local shell="${6:-/bin/false}"
 334         local rc
 335         [ -z "$uid" ] && {
 336                 uids=$(cat ${IPKG_INSTROOT}/etc/passwd | cut -d: -f3)
 337                 uid=100
 338                 while [ -n "$(echo $uids | grep $uid)" ] ; do
 339                         uid=$((uid + 1))
 340                 done
 341         }
 342         [ -z "$gid" ] && gid=$uid
 343         [ -f "${IPKG_INSTROOT}/etc/passwd" ] || return 1
 344         [ -n "$IPKG_INSTROOT" ] || lock /var/lock/passwd
 345         echo "${name}:x:${uid}:${gid}:${desc}:${home}:${shell}" >> ${IPKG_INSTROOT}/etc/passwd
 346         echo "${name}:x:0:0:99999:7:::" >> ${IPKG_INSTROOT}/etc/shadow
 347         rc=$?
 348         [ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/passwd
 349         return $rc
 350 }
 351
 352 user_exists() {
 353         grep -qs "^${1}:" ${IPKG_INSTROOT}/etc/passwd
 354 }
 355
 356 [ -z "$IPKG_INSTROOT" -a -f /lib/config/uci.sh ] && . /lib/config/uci.sh