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="${IPKG_INSTROOT}"
 155         local name
 156
 157         name=$(basename ${1%.*})
 158         [ -f "$root/usr/lib/opkg/info/${name}.prerm-pkg" ] && . "$root/usr/lib/opkg/info/${name}.prerm-pkg"
 159
 160         local shell="$(which bash)"
 161         for i in `cat "$root/usr/lib/opkg/info/${name}.list" | grep "^/etc/init.d/"`; do
 162                 if [ -n "$root" ]; then
 163                         ${shell:-/bin/sh} "$root/etc/rc.common" "$root$i" disable
 164                 else
 165                         if [ "$PKG_UPGRADE" != "1" ]; then
 166                                 "$i" disable
 167                         fi
 168                         "$i" stop || /bin/true
 169                 fi
 170         done
 171 }
 172
 173 add_group_and_user() {
 174         local pkgname="$1"
 175         local rusers="$(sed -ne 's/^Require-User: *//p' $root/usr/lib/opkg/info/${pkgname}.control 2>/dev/null)"
 176
 177         if [ -n "$rusers" ]; then
 178                 local tuple oIFS="$IFS"
 179                 for tuple in $rusers; do
 180                         local uid gid uname gname
 181
 182                         IFS=":"
 183                         set -- $tuple; uname="$1"; gname="$2"
 184                         IFS="="
 185                         set -- $uname; uname="$1"; uid="$2"
 186                         set -- $gname; gname="$1"; gid="$2"
 187                         IFS="$oIFS"
 188
 189                         if [ -n "$gname" ] && [ -n "$gid" ]; then
 190                                 group_exists "$gname" || group_add "$gname" "$gid"
 191                         elif [ -n "$gname" ]; then
 192                                 gid="$(group_add_next "$gname")"
 193                         fi
 194
 195                         if [ -n "$uname" ]; then
 196                                 user_exists "$uname" || user_add "$uname" "$uid" "$gid"
 197                         fi
 198
 199                         if [ -n "$uname" ] && [ -n "$gname" ]; then
 200                                 group_add_user "$gname" "$uname"
 201                         fi
 202
 203                         unset uid gid uname gname
 204                 done
 205         fi
 206 }
 207
 208 default_postinst() {
 209         local root="${IPKG_INSTROOT}"
 210         local pkgname="$(basename ${1%.*})"
 211         local ret=0
 212
 213         add_group_and_user "${pkgname}"
 214
 215         if [ -f "$root/usr/lib/opkg/info/${pkgname}.postinst-pkg" ]; then
 216                 ( . "$root/usr/lib/opkg/info/${pkgname}.postinst-pkg" )
 217                 ret=$?
 218         fi
 219
 220         if [ -d "$root/rootfs-overlay" ]; then
 221                 cp -R $root/rootfs-overlay/. $root/
 222                 rm -fR $root/rootfs-overlay/
 223         fi
 224
 225         if [ -z "$root" ] && grep -q -s "^/etc/modules.d/" "/usr/lib/opkg/info/${pkgname}.list"; then
 226                 kmodloader
 227         fi
 228
 229         if [ -z "$root" ] && grep -q -s "^/etc/uci-defaults/" "/usr/lib/opkg/info/${pkgname}.list"; then
 230                 . /lib/functions/system.sh
 231                 [ -d /tmp/.uci ] || mkdir -p /tmp/.uci
 232                 for i in $(grep -s "^/etc/uci-defaults/" "/usr/lib/opkg/info/${pkgname}.list"); do
 233                         ( [ -f "$i" ] && cd "$(dirname $i)" && . "$i" ) && rm -f "$i"
 234                 done
 235                 uci commit
 236         fi
 237
 238         [ -n "$root" ] || rm -f /tmp/luci-indexcache 2>/dev/null
 239
 240         local shell="$(which bash)"
 241         for i in $(grep -s "^/etc/init.d/" "$root/usr/lib/opkg/info/${pkgname}.list"); do
 242                 if [ -n "$root" ]; then
 243                         ${shell:-/bin/sh} "$root/etc/rc.common" "$root$i" enable
 244                 else
 245                         if [ "$PKG_UPGRADE" != "1" ]; then
 246                                 "$i" enable
 247                         fi
 248                         "$i" start
 249                 fi
 250         done
 251
 252         return $ret
 253 }
 254
 255 include() {
 256         local file
 257
 258         for file in $(ls $1/*.sh 2>/dev/null); do
 259                 . $file
 260         done
 261 }
 262
 263 find_mtd_index() {
 264         local PART="$(grep "\"$1\"" /proc/mtd | awk -F: '{print $1}')"
 265         local INDEX="${PART##mtd}"
 266
 267         echo ${INDEX}
 268 }
 269
 270 find_mtd_part() {
 271         local INDEX=$(find_mtd_index "$1")
 272         local PREFIX=/dev/mtdblock
 273
 274         [ -d /dev/mtdblock ] && PREFIX=/dev/mtdblock/
 275         echo "${INDEX:+$PREFIX$INDEX}"
 276 }
 277
 278 group_add() {
 279         local name="$1"
 280         local gid="$2"
 281         local rc
 282         [ -f "${IPKG_INSTROOT}/etc/group" ] || return 1
 283         [ -n "$IPKG_INSTROOT" ] || lock /var/lock/group
 284         echo "${name}:x:${gid}:" >> ${IPKG_INSTROOT}/etc/group
 285         [ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/group
 286 }
 287
 288 group_exists() {
 289         grep -qs "^${1}:" ${IPKG_INSTROOT}/etc/group
 290 }
 291
 292 group_add_next() {
 293         local gid gids
 294         gid=$(grep -s "^${1}:" ${IPKG_INSTROOT}/etc/group | cut -d: -f3)
 295         if [ -n "$gid" ]; then
 296                 echo $gid
 297                 return
 298         fi
 299         gids=$(cat ${IPKG_INSTROOT}/etc/group | cut -d: -f3)
 300         gid=65536
 301         while [ -n "$(echo "$gids" | grep "^$gid$")" ] ; do
 302                 gid=$((gid + 1))
 303         done
 304         group_add $1 $gid
 305         echo $gid
 306 }
 307
 308 group_add_user() {
 309         local grp delim=","
 310         grp=$(grep -s "^${1}:" ${IPKG_INSTROOT}/etc/group)
 311         [ -z "$(echo $grp | cut -d: -f4 | grep $2)" ] || return
 312         [ -n "$(echo $grp | grep ":$")" ] && delim=""
 313         [ -n "$IPKG_INSTROOT" ] || lock /var/lock/passwd
 314         sed -i "s/$grp/$grp$delim$2/g" ${IPKG_INSTROOT}/etc/group
 315         [ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/passwd
 316 }
 317
 318 user_add() {
 319         local name="${1}"
 320         local uid="${2}"
 321         local gid="${3}"
 322         local desc="${4:-$1}"
 323         local home="${5:-/var/run/$1}"
 324         local shell="${6:-/bin/false}"
 325         local rc
 326         [ -z "$uid" ] && {
 327                 uids=$(cat ${IPKG_INSTROOT}/etc/passwd | cut -d: -f3)
 328                 uid=65536
 329                 while [ -n "$(echo "$uids" | grep "^$uid$")" ] ; do
 330                         uid=$((uid + 1))
 331                 done
 332         }
 333         [ -z "$gid" ] && gid=$uid
 334         [ -f "${IPKG_INSTROOT}/etc/passwd" ] || return 1
 335         [ -n "$IPKG_INSTROOT" ] || lock /var/lock/passwd
 336         echo "${name}:x:${uid}:${gid}:${desc}:${home}:${shell}" >> ${IPKG_INSTROOT}/etc/passwd
 337         echo "${name}:x:0:0:99999:7:::" >> ${IPKG_INSTROOT}/etc/shadow
 338         [ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/passwd
 339 }
 340
 341 user_exists() {
 342         grep -qs "^${1}:" ${IPKG_INSTROOT}/etc/passwd
 343 }
 344
 345 board_name() {
 346         [ -e /tmp/sysinfo/board_name ] && cat /tmp/sysinfo/board_name || echo "generic"
 347 }
 348
 349 [ -z "$IPKG_INSTROOT" -a -f /lib/config/uci.sh ] && . /lib/config/uci.sh