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 $(sed -ne 's!^/etc/uci-defaults/!!p' "/usr/lib/opkg/info/${pkgname}.list"); do (
 233                         cd /etc/uci-defaults
 234                         [ -f "$i" ] && . ./"$i" && rm -f "$i"
 235                 ) done
 236                 uci commit
 237         fi
 238
 239         [ -n "$root" ] || rm -f /tmp/luci-indexcache 2>/dev/null
 240
 241         local shell="$(which bash)"
 242         for i in $(grep -s "^/etc/init.d/" "$root/usr/lib/opkg/info/${pkgname}.list"); do
 243                 if [ -n "$root" ]; then
 244                         ${shell:-/bin/sh} "$root/etc/rc.common" "$root$i" enable
 245                 else
 246                         if [ "$PKG_UPGRADE" != "1" ]; then
 247                                 "$i" enable
 248                         fi
 249                         "$i" start
 250                 fi
 251         done
 252
 253         return $ret
 254 }
 255
 256 include() {
 257         local file
 258
 259         for file in $(ls $1/*.sh 2>/dev/null); do
 260                 . $file
 261         done
 262 }
 263
 264 find_mtd_index() {
 265         local PART="$(grep "\"$1\"" /proc/mtd | awk -F: '{print $1}')"
 266         local INDEX="${PART##mtd}"
 267
 268         echo ${INDEX}
 269 }
 270
 271 find_mtd_part() {
 272         local INDEX=$(find_mtd_index "$1")
 273         local PREFIX=/dev/mtdblock
 274
 275         [ -d /dev/mtdblock ] && PREFIX=/dev/mtdblock/
 276         echo "${INDEX:+$PREFIX$INDEX}"
 277 }
 278
 279 group_add() {
 280         local name="$1"
 281         local gid="$2"
 282         local rc
 283         [ -f "${IPKG_INSTROOT}/etc/group" ] || return 1
 284         [ -n "$IPKG_INSTROOT" ] || lock /var/lock/group
 285         echo "${name}:x:${gid}:" >> ${IPKG_INSTROOT}/etc/group
 286         [ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/group
 287 }
 288
 289 group_exists() {
 290         grep -qs "^${1}:" ${IPKG_INSTROOT}/etc/group
 291 }
 292
 293 group_add_next() {
 294         local gid gids
 295         gid=$(grep -s "^${1}:" ${IPKG_INSTROOT}/etc/group | cut -d: -f3)
 296         if [ -n "$gid" ]; then
 297                 echo $gid
 298                 return
 299         fi
 300         gids=$(cat ${IPKG_INSTROOT}/etc/group | cut -d: -f3)
 301         gid=65536
 302         while [ -n "$(echo "$gids" | grep "^$gid$")" ] ; do
 303                 gid=$((gid + 1))
 304         done
 305         group_add $1 $gid
 306         echo $gid
 307 }
 308
 309 group_add_user() {
 310         local grp delim=","
 311         grp=$(grep -s "^${1}:" ${IPKG_INSTROOT}/etc/group)
 312         [ -z "$(echo $grp | cut -d: -f4 | grep $2)" ] || return
 313         [ -n "$(echo $grp | grep ":$")" ] && delim=""
 314         [ -n "$IPKG_INSTROOT" ] || lock /var/lock/passwd
 315         sed -i "s/$grp/$grp$delim$2/g" ${IPKG_INSTROOT}/etc/group
 316         [ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/passwd
 317 }
 318
 319 user_add() {
 320         local name="${1}"
 321         local uid="${2}"
 322         local gid="${3}"
 323         local desc="${4:-$1}"
 324         local home="${5:-/var/run/$1}"
 325         local shell="${6:-/bin/false}"
 326         local rc
 327         [ -z "$uid" ] && {
 328                 uids=$(cat ${IPKG_INSTROOT}/etc/passwd | cut -d: -f3)
 329                 uid=65536
 330                 while [ -n "$(echo "$uids" | grep "^$uid$")" ] ; do
 331                         uid=$((uid + 1))
 332                 done
 333         }
 334         [ -z "$gid" ] && gid=$uid
 335         [ -f "${IPKG_INSTROOT}/etc/passwd" ] || return 1
 336         [ -n "$IPKG_INSTROOT" ] || lock /var/lock/passwd
 337         echo "${name}:x:${uid}:${gid}:${desc}:${home}:${shell}" >> ${IPKG_INSTROOT}/etc/passwd
 338         echo "${name}:x:0:0:99999:7:::" >> ${IPKG_INSTROOT}/etc/shadow
 339         [ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/passwd
 340 }
 341
 342 user_exists() {
 343         grep -qs "^${1}:" ${IPKG_INSTROOT}/etc/passwd
 344 }
 345
 346 board_name() {
 347         [ -e /tmp/sysinfo/board_name ] && cat /tmp/sysinfo/board_name || echo "generic"
 348 }
 349
 350 [ -z "$IPKG_INSTROOT" -a -f /lib/config/uci.sh ] && . /lib/config/uci.sh