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 insert_modules() {
 154         for m in $*; do
 155                 if [ -f /etc/modules.d/$m ]; then
 156                         sed 's/^[^#]/insmod &/' /etc/modules.d/$m | ash 2>&- || :
 157                 else
 158                         modprobe $m || :
 159                 fi
 160         done
 161 }
 162
 163 default_prerm() {
 164         local root="${IPKG_INSTROOT}"
 165         local name
 166
 167         name=$(basename ${1%.*})
 168         [ -f "$root/usr/lib/opkg/info/${name}.prerm-pkg" ] && . "$root/usr/lib/opkg/info/${name}.prerm-pkg"
 169
 170         local shell="$(which bash)"
 171         for i in `cat "$root/usr/lib/opkg/info/${name}.list" | grep "^/etc/init.d/"`; do
 172                 if [ -n "$root" ]; then
 173                         ${shell:-/bin/sh} "$root/etc/rc.common" "$root$i" disable
 174                 else
 175                         if [ "$PKG_UPGRADE" != "1" ]; then
 176                                 "$i" disable
 177                         fi
 178                         "$i" stop || /bin/true
 179                 fi
 180         done
 181 }
 182
 183 add_group_and_user() {
 184         local pkgname="$1"
 185         local rusers="$(sed -ne 's/^Require-User: *//p' $root/usr/lib/opkg/info/${pkgname}.control 2>/dev/null)"
 186
 187         if [ -n "$rusers" ]; then
 188                 local tuple oIFS="$IFS"
 189                 for tuple in $rusers; do
 190                         local uid gid uname gname
 191
 192                         IFS=":"
 193                         set -- $tuple; uname="$1"; gname="$2"
 194                         IFS="="
 195                         set -- $uname; uname="$1"; uid="$2"
 196                         set -- $gname; gname="$1"; gid="$2"
 197                         IFS="$oIFS"
 198
 199                         if [ -n "$gname" ] && [ -n "$gid" ]; then
 200                                 group_exists "$gname" || group_add "$gname" "$gid"
 201                         elif [ -n "$gname" ]; then
 202                                 group_add_next "$gname"; gid=$?
 203                         fi
 204
 205                         if [ -n "$uname" ]; then
 206                                 user_exists "$uname" || user_add "$uname" "$uid" "$gid"
 207                         fi
 208
 209                         if [ -n "$uname" ] && [ -n "$gname" ]; then
 210                                 group_add_user "$gname" "$uname"
 211                         fi
 212
 213                         unset uid gid uname gname
 214                 done
 215         fi
 216 }
 217
 218 default_postinst() {
 219         local root="${IPKG_INSTROOT}"
 220         local pkgname="$(basename ${1%.*})"
 221         local ret=0
 222
 223         add_group_and_user "${pkgname}"
 224
 225         if [ -f "$root/usr/lib/opkg/info/${pkgname}.postinst-pkg" ]; then
 226                 ( . "$root/usr/lib/opkg/info/${pkgname}.postinst-pkg" )
 227                 ret=$?
 228         fi
 229
 230         if [ -d "$root/rootfs-overlay" ]; then
 231                 cp -R $root/rootfs-overlay/. $root/
 232                 rm -fR $root/rootfs-overlay/
 233         fi
 234
 235         if [ -z "$root" ] && grep -q -s "^/etc/uci-defaults/" "/usr/lib/opkg/info/${pkgname}.list"; then
 236                 . /lib/functions/system.sh
 237                 [ -d /tmp/.uci ] || mkdir -p /tmp/.uci
 238                 for i in $(sed -ne 's!^/etc/uci-defaults/!!p' "/usr/lib/opkg/info/${pkgname}.list"); do (
 239                         cd /etc/uci-defaults
 240                         [ -f "$i" ] && . ./"$i" && rm -f "$i"
 241                 ) done
 242                 uci commit
 243         fi
 244
 245         [ -n "$root" ] || rm -f /tmp/luci-indexcache 2>/dev/null
 246
 247         local shell="$(which bash)"
 248         for i in $(grep -s "^/etc/init.d/" "$root/usr/lib/opkg/info/${pkgname}.list"); do
 249                 if [ -n "$root" ]; then
 250                         ${shell:-/bin/sh} "$root/etc/rc.common" "$root$i" enable
 251                 else
 252                         if [ "$PKG_UPGRADE" != "1" ]; then
 253                                 "$i" enable
 254                         fi
 255                         "$i" start
 256                 fi
 257         done
 258
 259         return $ret
 260 }
 261
 262 include() {
 263         local file
 264
 265         for file in $(ls $1/*.sh 2>/dev/null); do
 266                 . $file
 267         done
 268 }
 269
 270 find_mtd_index() {
 271         local PART="$(grep "\"$1\"" /proc/mtd | awk -F: '{print $1}')"
 272         local INDEX="${PART##mtd}"
 273
 274         echo ${INDEX}
 275 }
 276
 277 find_mtd_part() {
 278         local INDEX=$(find_mtd_index "$1")
 279         local PREFIX=/dev/mtdblock
 280
 281         [ -d /dev/mtdblock ] && PREFIX=/dev/mtdblock/
 282         echo "${INDEX:+$PREFIX$INDEX}"
 283 }
 284
 285 group_add() {
 286         local name="$1"
 287         local gid="$2"
 288         local rc
 289         [ -f "${IPKG_INSTROOT}/etc/group" ] || return 1
 290         [ -n "$IPKG_INSTROOT" ] || lock /var/lock/group
 291         echo "${name}:x:${gid}:" >> ${IPKG_INSTROOT}/etc/group
 292         rc=$?
 293         [ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/group
 294         return $rc
 295 }
 296
 297 group_exists() {
 298         grep -qs "^${1}:" ${IPKG_INSTROOT}/etc/group
 299 }
 300
 301 group_add_next() {
 302         local gid gids
 303         gid=$(grep -s "^${1}:" ${IPKG_INSTROOT}/etc/group | cut -d: -f3)
 304         [ -n "$gid" ] && return $gid
 305         gids=$(cat ${IPKG_INSTROOT}/etc/group | cut -d: -f3)
 306         gid=100
 307         while [ -n "$(echo $gids | grep $gid)" ] ; do
 308                 gid=$((gid + 1))
 309         done
 310         group_add $1 $gid
 311         return $gid
 312 }
 313
 314 group_add_user() {
 315         local grp delim=","
 316         grp=$(grep -s "^${1}:" ${IPKG_INSTROOT}/etc/group)
 317         [ -z "$(echo $grp | cut -d: -f4 | grep $2)" ] || return
 318         [ -n "$(echo $grp | grep ":$")" ] && delim=""
 319         [ -n "$IPKG_INSTROOT" ] || lock /var/lock/passwd
 320         sed -i "s/$grp/$grp$delim$2/g" ${IPKG_INSTROOT}/etc/group
 321         [ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/passwd
 322 }
 323
 324 user_add() {
 325         local name="${1}"
 326         local uid="${2}"
 327         local gid="${3}"
 328         local desc="${4:-$1}"
 329         local home="${5:-/var/run/$1}"
 330         local shell="${6:-/bin/false}"
 331         local rc
 332         [ -z "$uid" ] && {
 333                 uids=$(cat ${IPKG_INSTROOT}/etc/passwd | cut -d: -f3)
 334                 uid=100
 335                 while [ -n "$(echo $uids | grep $uid)" ] ; do
 336                         uid=$((uid + 1))
 337                 done
 338         }
 339         [ -z "$gid" ] && gid=$uid
 340         [ -f "${IPKG_INSTROOT}/etc/passwd" ] || return 1
 341         [ -n "$IPKG_INSTROOT" ] || lock /var/lock/passwd
 342         echo "${name}:x:${uid}:${gid}:${desc}:${home}:${shell}" >> ${IPKG_INSTROOT}/etc/passwd
 343         echo "${name}:x:0:0:99999:7:::" >> ${IPKG_INSTROOT}/etc/shadow
 344         rc=$?
 345         [ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/passwd
 346         return $rc
 347 }
 348
 349 user_exists() {
 350         grep -qs "^${1}:" ${IPKG_INSTROOT}/etc/passwd
 351 }
 352
 353 board_name() {
 354         [ -e /tmp/sysinfo/board_name ] && cat /tmp/sysinfo/board_name || echo "generic"
 355 }
 356
 357 [ -z "$IPKG_INSTROOT" -a -f /lib/config/uci.sh ] && . /lib/config/uci.sh