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         uci_load "$@"
  39 }
  40
  41 reset_cb() {
  42         config_cb() { return 0; }
  43         option_cb() { return 0; }
  44         list_cb() { return 0; }
  45 }
  46 reset_cb
  47
  48 package() {
  49         return 0
  50 }
  51
  52 config () {
  53         local cfgtype="$1"
  54         local name="$2"
  55
  56         export ${NO_EXPORT:+-n} CONFIG_NUM_SECTIONS=$(($CONFIG_NUM_SECTIONS + 1))
  57         name="${name:-cfg$CONFIG_NUM_SECTIONS}"
  58         append CONFIG_SECTIONS "$name"
  59         [ -n "$NO_CALLBACK" ] || config_cb "$cfgtype" "$name"
  60         export ${NO_EXPORT:+-n} CONFIG_SECTION="$name"
  61         export ${NO_EXPORT:+-n} "CONFIG_${CONFIG_SECTION}_TYPE=$cfgtype"
  62 }
  63
  64 option () {
  65         local varname="$1"; shift
  66         local value="$*"
  67
  68         export ${NO_EXPORT:+-n} "CONFIG_${CONFIG_SECTION}_${varname}=$value"
  69         [ -n "$NO_CALLBACK" ] || option_cb "$varname" "$*"
  70 }
  71
  72 list() {
  73         local varname="$1"; shift
  74         local value="$*"
  75         local len
  76
  77         config_get len "$CONFIG_SECTION" "${varname}_LENGTH" 0
  78         [ $len = 0 ] && append CONFIG_LIST_STATE "${CONFIG_SECTION}_${varname}"
  79         len=$(($len + 1))
  80         config_set "$CONFIG_SECTION" "${varname}_ITEM$len" "$value"
  81         config_set "$CONFIG_SECTION" "${varname}_LENGTH" "$len"
  82         append "CONFIG_${CONFIG_SECTION}_${varname}" "$value" "$LIST_SEP"
  83         list_cb "$varname" "$*"
  84 }
  85
  86 config_unset() {
  87         config_set "$1" "$2" ""
  88 }
  89
  90 # config_get <variable> <section> <option> [<default>]
  91 # config_get <section> <option>
  92 config_get() {
  93         case "$3" in
  94                 "") eval echo "\${CONFIG_${1}_${2}:-\${4}}";;
  95                 *)  eval export ${NO_EXPORT:+-n} -- "${1}=\${CONFIG_${2}_${3}:-\${4}}";;
  96         esac
  97 }
  98
  99 # config_get_bool <variable> <section> <option> [<default>]
 100 config_get_bool() {
 101         local _tmp
 102         config_get _tmp "$2" "$3" "$4"
 103         case "$_tmp" in
 104                 1|on|true|yes|enabled) _tmp=1;;
 105                 0|off|false|no|disabled) _tmp=0;;
 106                 *) _tmp="$4";;
 107         esac
 108         export ${NO_EXPORT:+-n} "$1=$_tmp"
 109 }
 110
 111 config_set() {
 112         local section="$1"
 113         local option="$2"
 114         local value="$3"
 115         local old_section="$CONFIG_SECTION"
 116
 117         CONFIG_SECTION="$section"
 118         option "$option" "$value"
 119         CONFIG_SECTION="$old_section"
 120 }
 121
 122 config_foreach() {
 123         local ___function="$1"
 124         [ "$#" -ge 1 ] && shift
 125         local ___type="$1"
 126         [ "$#" -ge 1 ] && shift
 127         local section cfgtype
 128
 129         [ -z "$CONFIG_SECTIONS" ] && return 0
 130         for section in ${CONFIG_SECTIONS}; do
 131                 config_get cfgtype "$section" TYPE
 132                 [ -n "$___type" -a "x$cfgtype" != "x$___type" ] && continue
 133                 eval "$___function \"\$section\" \"\$@\""
 134         done
 135 }
 136
 137 config_list_foreach() {
 138         [ "$#" -ge 3 ] || return 0
 139         local section="$1"; shift
 140         local option="$1"; shift
 141         local function="$1"; shift
 142         local val
 143         local len
 144         local c=1
 145
 146         config_get len "${section}" "${option}_LENGTH"
 147         [ -z "$len" ] && return 0
 148         while [ $c -le "$len" ]; do
 149                 config_get val "${section}" "${option}_ITEM$c"
 150                 eval "$function \"\$val\" \"\$@\""
 151                 c="$(($c + 1))"
 152         done
 153 }
 154
 155 insert_modules() {
 156         for m in $*; do
 157                 if [ -f /etc/modules.d/$m ]; then
 158                         sed 's/^[^#]/insmod &/' /etc/modules.d/$m | ash 2>&- || :
 159                 else
 160                         modprobe $m
 161                 fi
 162         done
 163 }
 164
 165 default_prerm() {
 166         local root="${IPKG_INSTROOT}"
 167         local name
 168
 169         name=$(basename ${1%.*})
 170         [ -f "$root/usr/lib/opkg/info/${name}.prerm-pkg" ] && . "$root/usr/lib/opkg/info/${name}.prerm-pkg"
 171         check_update_alternatives remove "${name}"
 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 check_update_alternatives() {
 222         local cmd="$1"
 223         local pkgname="$2"
 224         local altspecs="$(sed -ne 's/^Alternatives: *//p' $root/usr/lib/opkg/info/${pkgname}.control 2>/dev/null)"
 225         local spec
 226         local oIFS
 227         local shell="$(which bash)"
 228
 229         shell="${shell:-/bin/sh}"
 230         oIFS="$IFS"; IFS=", "
 231         for spec in $altspecs; do
 232                 $shell ${IPKG_INSTROOT}/usr/sbin/update-alternatives "$cmd" --spec "$spec"
 233         done
 234         IFS="$oIFS"
 235 }
 236
 237 default_postinst() {
 238         local root="${IPKG_INSTROOT}"
 239         local pkgname="$(basename ${1%.*})"
 240         local ret=0
 241
 242         add_group_and_user "${pkgname}"
 243         check_update_alternatives update "${pkgname}"
 244
 245         if [ -f "$root/usr/lib/opkg/info/${pkgname}.postinst-pkg" ]; then
 246                 ( . "$root/usr/lib/opkg/info/${pkgname}.postinst-pkg" )
 247                 ret=$?
 248         fi
 249
 250         if [ -d "$root/rootfs-overlay" ]; then
 251                 cp -R $root/rootfs-overlay/. $root/
 252                 rm -fR $root/rootfs-overlay/
 253         fi
 254
 255         if [ -z "$root" ] && grep -q -s "^/etc/uci-defaults/" "/usr/lib/opkg/info/${pkgname}.list"; then
 256                 . /lib/functions/system.sh
 257                 [ -d /tmp/.uci ] || mkdir -p /tmp/.uci
 258                 for i in $(sed -ne 's!^/etc/uci-defaults/!!p' "/usr/lib/opkg/info/${pkgname}.list"); do (
 259                         cd /etc/uci-defaults
 260                         [ -f "$i" ] && . "$i" && rm -f "$i"
 261                 ) done
 262                 uci commit
 263         fi
 264
 265         [ -n "$root" ] || rm -f /tmp/luci-indexcache 2>/dev/null
 266
 267         local shell="$(which bash)"
 268         for i in $(grep -s "^/etc/init.d/" "$root/usr/lib/opkg/info/${pkgname}.list"); do
 269                 if [ -n "$root" ]; then
 270                         ${shell:-/bin/sh} "$root/etc/rc.common" "$root$i" enable
 271                 else
 272                         if [ "$PKG_UPGRADE" != "1" ]; then
 273                                 "$i" enable
 274                         fi
 275                         "$i" start
 276                 fi
 277         done
 278
 279         return $ret
 280 }
 281
 282 include() {
 283         local file
 284
 285         for file in $(ls $1/*.sh 2>/dev/null); do
 286                 . $file
 287         done
 288 }
 289
 290 find_mtd_index() {
 291         local PART="$(grep "\"$1\"" /proc/mtd | awk -F: '{print $1}')"
 292         local INDEX="${PART##mtd}"
 293
 294         echo ${INDEX}
 295 }
 296
 297 find_mtd_part() {
 298         local INDEX=$(find_mtd_index "$1")
 299         local PREFIX=/dev/mtdblock
 300
 301         [ -d /dev/mtdblock ] && PREFIX=/dev/mtdblock/
 302         echo "${INDEX:+$PREFIX$INDEX}"
 303 }
 304
 305 group_add() {
 306         local name="$1"
 307         local gid="$2"
 308         local rc
 309         [ -f "${IPKG_INSTROOT}/etc/group" ] || return 1
 310         [ -n "$IPKG_INSTROOT" ] || lock /var/lock/group
 311         echo "${name}:x:${gid}:" >> ${IPKG_INSTROOT}/etc/group
 312         rc=$?
 313         [ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/group
 314         return $rc
 315 }
 316
 317 group_exists() {
 318         grep -qs "^${1}:" ${IPKG_INSTROOT}/etc/group
 319 }
 320
 321 group_add_next() {
 322         local gid gids
 323         gid=$(grep -s "^${1}:" ${IPKG_INSTROOT}/etc/group | cut -d: -f3)
 324         [ -n "$gid" ] && return $gid
 325         gids=$(cat ${IPKG_INSTROOT}/etc/group | cut -d: -f3)
 326         gid=100
 327         while [ -n "$(echo $gids | grep $gid)" ] ; do
 328                 gid=$((gid + 1))
 329         done
 330         group_add $1 $gid
 331         return $gid
 332 }
 333
 334 group_add_user() {
 335         local grp delim=","
 336         grp=$(grep -s "^${1}:" ${IPKG_INSTROOT}/etc/group)
 337         [ -z "$(echo $grp | cut -d: -f4 | grep $2)" ] || return
 338         [ -n "$(echo $grp | grep ":$")" ] && delim=""
 339         [ -n "$IPKG_INSTROOT" ] || lock /var/lock/passwd
 340         sed -i "s/$grp/$grp$delim$2/g" ${IPKG_INSTROOT}/etc/group
 341         [ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/passwd
 342 }
 343
 344 user_add() {
 345         local name="${1}"
 346         local uid="${2}"
 347         local gid="${3}"
 348         local desc="${4:-$1}"
 349         local home="${5:-/var/run/$1}"
 350         local shell="${6:-/bin/false}"
 351         local rc
 352         [ -z "$uid" ] && {
 353                 uids=$(cat ${IPKG_INSTROOT}/etc/passwd | cut -d: -f3)
 354                 uid=100
 355                 while [ -n "$(echo $uids | grep $uid)" ] ; do
 356                         uid=$((uid + 1))
 357                 done
 358         }
 359         [ -z "$gid" ] && gid=$uid
 360         [ -f "${IPKG_INSTROOT}/etc/passwd" ] || return 1
 361         [ -n "$IPKG_INSTROOT" ] || lock /var/lock/passwd
 362         echo "${name}:x:${uid}:${gid}:${desc}:${home}:${shell}" >> ${IPKG_INSTROOT}/etc/passwd
 363         echo "${name}:x:0:0:99999:7:::" >> ${IPKG_INSTROOT}/etc/shadow
 364         rc=$?
 365         [ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/passwd
 366         return $rc
 367 }
 368
 369 user_exists() {
 370         grep -qs "^${1}:" ${IPKG_INSTROOT}/etc/passwd
 371 }
 372
 373 . $IPKG_INSTROOT/lib/config/uci.sh