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/${name}.prerm-pkg"
 171
 172         local shell="$(which bash)"
 173         for i in `cat "$root/usr/lib/opkg/info/${name}.list" | grep "^/etc/init.d/"`; do
 174                 if [ -n "$root" ]; then
 175                         ${shell:-/bin/sh} "$root/etc/rc.common" "$root$i" disable
 176                 else
 177                         if [ "$PKG_UPGRADE" != "1" ]; then
 178                                 "$i" disable
 179                         fi
 180                         "$i" stop || /bin/true
 181                 fi
 182         done
 183 }
 184
 185 add_group_and_user() {
 186         local pkgname="$1"
 187         local rusers="$(sed -ne 's/^Require-User: *//p' $root/usr/lib/opkg/info/${pkgname}.control 2>/dev/null)"
 188
 189         if [ -n "$rusers" ]; then
 190                 local tuple oIFS="$IFS"
 191                 for tuple in $rusers; do
 192                         local uid gid uname gname
 193
 194                         IFS=":"
 195                         set -- $tuple; uname="$1"; gname="$2"
 196                         IFS="="
 197                         set -- $uname; uname="$1"; uid="$2"
 198                         set -- $gname; gname="$1"; gid="$2"
 199                         IFS="$oIFS"
 200
 201                         if [ -n "$gname" ] && [ -n "$gid" ]; then
 202                                 group_exists "$gname" || group_add "$gname" "$gid"
 203                         elif [ -n "$gname" ]; then
 204                                 group_add_next "$gname"; gid=$?
 205                         fi
 206
 207                         if [ -n "$uname" ]; then
 208                                 user_exists "$uname" || user_add "$uname" "$uid" "$gid"
 209                         fi
 210
 211                         if [ -n "$uname" ] && [ -n "$gname" ]; then
 212                                 group_add_user "$gname" "$uname"
 213                         fi
 214
 215                         unset uid gid uname gname
 216                 done
 217         fi
 218 }
 219
 220 default_postinst() {
 221         local root="${IPKG_INSTROOT}"
 222         local pkgname="$(basename ${1%.*})"
 223         local ret=0
 224
 225         add_group_and_user "${pkgname}"
 226
 227         if [ -f "$root/usr/lib/opkg/info/${pkgname}.postinst-pkg" ]; then
 228                 ( . "$root/usr/lib/opkg/info/${pkgname}.postinst-pkg" )
 229                 ret=$?
 230         fi
 231
 232         if [ -d "$root/rootfs-overlay" ]; then
 233                 cp -R $root/rootfs-overlay/. $root/
 234                 rm -fR $root/rootfs-overlay/
 235         fi
 236
 237         if [ -z "$root" ] && grep -q -s "^/etc/uci-defaults/" "/usr/lib/opkg/info/${pkgname}.list"; then
 238                 . /lib/functions/system.sh
 239                 [ -d /tmp/.uci ] || mkdir -p /tmp/.uci
 240                 for i in $(sed -ne 's!^/etc/uci-defaults/!!p' "/usr/lib/opkg/info/${pkgname}.list"); do (
 241                         cd /etc/uci-defaults
 242                         [ -f "$i" ] && . "$i" && rm -f "$i"
 243                 ) done
 244                 uci commit
 245         fi
 246
 247         [ -n "$root" ] || rm -f /tmp/luci-indexcache 2>/dev/null
 248
 249         local shell="$(which bash)"
 250         for i in $(grep -s "^/etc/init.d/" "$root/usr/lib/opkg/info/${pkgname}.list"); do
 251                 if [ -n "$root" ]; then
 252                         ${shell:-/bin/sh} "$root/etc/rc.common" "$root$i" enable
 253                 else
 254                         if [ "$PKG_UPGRADE" != "1" ]; then
 255                                 "$i" enable
 256                         fi
 257                         "$i" start
 258                 fi
 259         done
 260
 261         return $ret
 262 }
 263
 264 include() {
 265         local file
 266
 267         for file in $(ls $1/*.sh 2>/dev/null); do
 268                 . $file
 269         done
 270 }
 271
 272 find_mtd_index() {
 273         local PART="$(grep "\"$1\"" /proc/mtd | awk -F: '{print $1}')"
 274         local INDEX="${PART##mtd}"
 275
 276         echo ${INDEX}
 277 }
 278
 279 find_mtd_part() {
 280         local INDEX=$(find_mtd_index "$1")
 281         local PREFIX=/dev/mtdblock
 282
 283         [ -d /dev/mtdblock ] && PREFIX=/dev/mtdblock/
 284         echo "${INDEX:+$PREFIX$INDEX}"
 285 }
 286
 287 group_add() {
 288         local name="$1"
 289         local gid="$2"
 290         local rc
 291         [ -f "${IPKG_INSTROOT}/etc/group" ] || return 1
 292         [ -n "$IPKG_INSTROOT" ] || lock /var/lock/group
 293         echo "${name}:x:${gid}:" >> ${IPKG_INSTROOT}/etc/group
 294         rc=$?
 295         [ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/group
 296         return $rc
 297 }
 298
 299 group_exists() {
 300         grep -qs "^${1}:" ${IPKG_INSTROOT}/etc/group
 301 }
 302
 303 group_add_next() {
 304         local gid gids
 305         gid=$(grep -s "^${1}:" ${IPKG_INSTROOT}/etc/group | cut -d: -f3)
 306         [ -n "$gid" ] && return $gid
 307         gids=$(cat ${IPKG_INSTROOT}/etc/group | cut -d: -f3)
 308         gid=100
 309         while [ -n "$(echo $gids | grep $gid)" ] ; do
 310                 gid=$((gid + 1))
 311         done
 312         group_add $1 $gid
 313         return $gid
 314 }
 315
 316 group_add_user() {
 317         local grp delim=","
 318         grp=$(grep -s "^${1}:" ${IPKG_INSTROOT}/etc/group)
 319         [ -z "$(echo $grp | cut -d: -f4 | grep $2)" ] || return
 320         [ -n "$(echo $grp | grep ":$")" ] && delim=""
 321         [ -n "$IPKG_INSTROOT" ] || lock /var/lock/passwd
 322         sed -i "s/$grp/$grp$delim$2/g" ${IPKG_INSTROOT}/etc/group
 323         [ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/passwd
 324 }
 325
 326 user_add() {
 327         local name="${1}"
 328         local uid="${2}"
 329         local gid="${3}"
 330         local desc="${4:-$1}"
 331         local home="${5:-/var/run/$1}"
 332         local shell="${6:-/bin/false}"
 333         local rc
 334         [ -z "$uid" ] && {
 335                 uids=$(cat ${IPKG_INSTROOT}/etc/passwd | cut -d: -f3)
 336                 uid=100
 337                 while [ -n "$(echo $uids | grep $uid)" ] ; do
 338                         uid=$((uid + 1))
 339                 done
 340         }
 341         [ -z "$gid" ] && gid=$uid
 342         [ -f "${IPKG_INSTROOT}/etc/passwd" ] || return 1
 343         [ -n "$IPKG_INSTROOT" ] || lock /var/lock/passwd
 344         echo "${name}:x:${uid}:${gid}:${desc}:${home}:${shell}" >> ${IPKG_INSTROOT}/etc/passwd
 345         echo "${name}:x:0:0:99999:7:::" >> ${IPKG_INSTROOT}/etc/shadow
 346         rc=$?
 347         [ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/passwd
 348         return $rc
 349 }
 350
 351 user_exists() {
 352         grep -qs "^${1}:" ${IPKG_INSTROOT}/etc/passwd
 353 }
 354
 355 . $IPKG_INSTROOT/lib/config/uci.sh