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         export ${NO_EXPORT:+-n} CONFIG_SECTION="$name"
  61         config_set "$CONFIG_SECTION" "TYPE" "${cfgtype}"
  62         [ -n "$NO_CALLBACK" ] || config_cb "$cfgtype" "$name"
  63 }
  64
  65 option () {
  66         local varname="$1"; shift
  67         local value="$*"
  68
  69         config_set "$CONFIG_SECTION" "${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         [ -n "$NO_CALLBACK" ] || list_cb "$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
 117         export ${NO_EXPORT:+-n} "CONFIG_${section}_${option}=${value}"
 118 }
 119
 120 config_foreach() {
 121         local ___function="$1"
 122         [ "$#" -ge 1 ] && shift
 123         local ___type="$1"
 124         [ "$#" -ge 1 ] && shift
 125         local section cfgtype
 126
 127         [ -z "$CONFIG_SECTIONS" ] && return 0
 128         for section in ${CONFIG_SECTIONS}; do
 129                 config_get cfgtype "$section" TYPE
 130                 [ -n "$___type" -a "x$cfgtype" != "x$___type" ] && continue
 131                 eval "$___function \"\$section\" \"\$@\""
 132         done
 133 }
 134
 135 config_list_foreach() {
 136         [ "$#" -ge 3 ] || return 0
 137         local section="$1"; shift
 138         local option="$1"; shift
 139         local function="$1"; shift
 140         local val
 141         local len
 142         local c=1
 143
 144         config_get len "${section}" "${option}_LENGTH"
 145         [ -z "$len" ] && return 0
 146         while [ $c -le "$len" ]; do
 147                 config_get val "${section}" "${option}_ITEM$c"
 148                 eval "$function \"\$val\" \"\$@\""
 149                 c="$(($c + 1))"
 150         done
 151 }
 152
 153 default_prerm() {
 154         local root="${IPKG_INSTROOT}"
 155         local pkgname="$(basename ${1%.*})"
 156         local ret=0
 157
 158         if [ -f "$root/usr/lib/opkg/info/${pkgname}.prerm-pkg" ]; then
 159                 ( . "$root/usr/lib/opkg/info/${pkgname}.prerm-pkg" )
 160                 ret=$?
 161         fi
 162
 163         local shell="$(which bash)"
 164         for i in $(grep -s "^/etc/init.d/" "$root/usr/lib/opkg/info/${pkgname}.list"); do
 165                 if [ -n "$root" ]; then
 166                         ${shell:-/bin/sh} "$root/etc/rc.common" "$root$i" disable
 167                 else
 168                         if [ "$PKG_UPGRADE" != "1" ]; then
 169                                 "$i" disable
 170                         fi
 171                         "$i" stop
 172                 fi
 173         done
 174
 175         return $ret
 176 }
 177
 178 add_group_and_user() {
 179         local pkgname="$1"
 180         local rusers="$(sed -ne 's/^Require-User: *//p' $root/usr/lib/opkg/info/${pkgname}.control 2>/dev/null)"
 181
 182         if [ -n "$rusers" ]; then
 183                 local tuple oIFS="$IFS"
 184                 for tuple in $rusers; do
 185                         local uid gid uname gname
 186
 187                         IFS=":"
 188                         set -- $tuple; uname="$1"; gname="$2"
 189                         IFS="="
 190                         set -- $uname; uname="$1"; uid="$2"
 191                         set -- $gname; gname="$1"; gid="$2"
 192                         IFS="$oIFS"
 193
 194                         if [ -n "$gname" ] && [ -n "$gid" ]; then
 195                                 group_exists "$gname" || group_add "$gname" "$gid"
 196                         elif [ -n "$gname" ]; then
 197                                 gid="$(group_add_next "$gname")"
 198                         fi
 199
 200                         if [ -n "$uname" ]; then
 201                                 user_exists "$uname" || user_add "$uname" "$uid" "$gid"
 202                         fi
 203
 204                         if [ -n "$uname" ] && [ -n "$gname" ]; then
 205                                 group_add_user "$gname" "$uname"
 206                         fi
 207
 208                         unset uid gid uname gname
 209                 done
 210         fi
 211 }
 212
 213 default_postinst() {
 214         local root="${IPKG_INSTROOT}"
 215         local pkgname="$(basename ${1%.*})"
 216         local filelist="/usr/lib/opkg/info/${pkgname}.list"
 217         local ret=0
 218
 219         add_group_and_user "${pkgname}"
 220
 221         if [ -f "$root/usr/lib/opkg/info/${pkgname}.postinst-pkg" ]; then
 222                 ( . "$root/usr/lib/opkg/info/${pkgname}.postinst-pkg" )
 223                 ret=$?
 224         fi
 225
 226         if [ -d "$root/rootfs-overlay" ]; then
 227                 cp -R $root/rootfs-overlay/. $root/
 228                 rm -fR $root/rootfs-overlay/
 229         fi
 230
 231         if [ -z "$root" ]; then
 232                 if grep -m1 -q -s "^/etc/modules.d/" "$filelist"; then
 233                         kmodloader
 234                 fi
 235
 236                 if grep -m1 -q -s "^/etc/sysctl.d/" "$filelist"; then
 237                         /etc/init.d/sysctl restart
 238                 fi
 239
 240                 if grep -m1 -q -s "^/etc/uci-defaults/" "$filelist"; then
 241                         . /lib/functions/system.sh
 242                         [ -d /tmp/.uci ] || mkdir -p /tmp/.uci
 243                         for i in $(grep -s "^/etc/uci-defaults/" "$filelist"); do
 244                                 ( [ -f "$i" ] && cd "$(dirname $i)" && . "$i" ) && rm -f "$i"
 245                         done
 246                         uci commit
 247                 fi
 248
 249                 rm -f /tmp/luci-indexcache
 250         fi
 251
 252         local shell="$(which bash)"
 253         for i in $(grep -s "^/etc/init.d/" "$root$filelist"); do
 254                 if [ -n "$root" ]; then
 255                         ${shell:-/bin/sh} "$root/etc/rc.common" "$root$i" enable
 256                 else
 257                         if [ "$PKG_UPGRADE" != "1" ]; then
 258                                 "$i" enable
 259                         fi
 260                         "$i" start
 261                 fi
 262         done
 263
 264         return $ret
 265 }
 266
 267 include() {
 268         local file
 269
 270         for file in $(ls $1/*.sh 2>/dev/null); do
 271                 . $file
 272         done
 273 }
 274
 275 find_mtd_index() {
 276         local PART="$(grep "\"$1\"" /proc/mtd | awk -F: '{print $1}')"
 277         local INDEX="${PART##mtd}"
 278
 279         echo ${INDEX}
 280 }
 281
 282 find_mtd_part() {
 283         local INDEX=$(find_mtd_index "$1")
 284         local PREFIX=/dev/mtdblock
 285
 286         [ -d /dev/mtdblock ] && PREFIX=/dev/mtdblock/
 287         echo "${INDEX:+$PREFIX$INDEX}"
 288 }
 289
 290 group_add() {
 291         local name="$1"
 292         local gid="$2"
 293         local rc
 294         [ -f "${IPKG_INSTROOT}/etc/group" ] || return 1
 295         [ -n "$IPKG_INSTROOT" ] || lock /var/lock/group
 296         echo "${name}:x:${gid}:" >> ${IPKG_INSTROOT}/etc/group
 297         [ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/group
 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}:" ${IPKG_INSTROOT}/etc/group | cut -d: -f3)
 307         if [ -n "$gid" ]; then
 308                 echo $gid
 309                 return
 310         fi
 311         gids=$(cat ${IPKG_INSTROOT}/etc/group | cut -d: -f3)
 312         gid=65536
 313         while [ -n "$(echo "$gids" | grep "^$gid$")" ] ; do
 314                 gid=$((gid + 1))
 315         done
 316         group_add $1 $gid
 317         echo $gid
 318 }
 319
 320 group_add_user() {
 321         local grp delim=","
 322         grp=$(grep -s "^${1}:" ${IPKG_INSTROOT}/etc/group)
 323         [ -z "$(echo $grp | cut -d: -f4 | grep $2)" ] || return
 324         [ -n "$(echo $grp | grep ":$")" ] && delim=""
 325         [ -n "$IPKG_INSTROOT" ] || lock /var/lock/passwd
 326         sed -i "s/$grp/$grp$delim$2/g" ${IPKG_INSTROOT}/etc/group
 327         [ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/passwd
 328 }
 329
 330 user_add() {
 331         local name="${1}"
 332         local uid="${2}"
 333         local gid="${3}"
 334         local desc="${4:-$1}"
 335         local home="${5:-/var/run/$1}"
 336         local shell="${6:-/bin/false}"
 337         local rc
 338         [ -z "$uid" ] && {
 339                 uids=$(cat ${IPKG_INSTROOT}/etc/passwd | cut -d: -f3)
 340                 uid=65536
 341                 while [ -n "$(echo "$uids" | grep "^$uid$")" ] ; do
 342                         uid=$((uid + 1))
 343                 done
 344         }
 345         [ -z "$gid" ] && gid=$uid
 346         [ -f "${IPKG_INSTROOT}/etc/passwd" ] || return 1
 347         [ -n "$IPKG_INSTROOT" ] || lock /var/lock/passwd
 348         echo "${name}:x:${uid}:${gid}:${desc}:${home}:${shell}" >> ${IPKG_INSTROOT}/etc/passwd
 349         echo "${name}:x:0:0:99999:7:::" >> ${IPKG_INSTROOT}/etc/shadow
 350         [ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/passwd
 351 }
 352
 353 user_exists() {
 354         grep -qs "^${1}:" ${IPKG_INSTROOT}/etc/passwd
 355 }
 356
 357 board_name() {
 358         [ -e /tmp/sysinfo/board_name ] && cat /tmp/sysinfo/board_name || echo "generic"
 359 }
 360
 361 [ -z "$IPKG_INSTROOT" -a -f /lib/config/uci.sh ] && . /lib/config/uci.sh