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