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 # xor multiple hex values of the same length
  21 xor() {
  22         local val
  23         local ret="0x$1"
  24         local retlen=${#1}
  25
  26         shift
  27         while [ -n "$1" ]; do
  28                 val="0x$1"
  29                 ret=$((ret ^ val))
  30                 shift
  31         done
  32
  33         printf "%0${retlen}x" "$ret"
  34 }
  35
  36 append() {
  37         local var="$1"
  38         local value="$2"
  39         local sep="${3:- }"
  40
  41         eval "export ${NO_EXPORT:+-n} -- \"$var=\${$var:+\${$var}\${value:+\$sep}}\$value\""
  42 }
  43
  44 list_contains() {
  45         local var="$1"
  46         local str="$2"
  47         local val
  48
  49         eval "val=\" \${$var} \""
  50         [ "${val%% $str *}" != "$val" ]
  51 }
  52
  53 config_load() {
  54         [ -n "$IPKG_INSTROOT" ] && return 0
  55         uci_load "$@"
  56 }
  57
  58 reset_cb() {
  59         config_cb() { return 0; }
  60         option_cb() { return 0; }
  61         list_cb() { return 0; }
  62 }
  63 reset_cb
  64
  65 package() {
  66         return 0
  67 }
  68
  69 config () {
  70         local cfgtype="$1"
  71         local name="$2"
  72
  73         export ${NO_EXPORT:+-n} CONFIG_NUM_SECTIONS=$((CONFIG_NUM_SECTIONS + 1))
  74         name="${name:-cfg$CONFIG_NUM_SECTIONS}"
  75         append CONFIG_SECTIONS "$name"
  76         export ${NO_EXPORT:+-n} CONFIG_SECTION="$name"
  77         config_set "$CONFIG_SECTION" "TYPE" "${cfgtype}"
  78         [ -n "$NO_CALLBACK" ] || config_cb "$cfgtype" "$name"
  79 }
  80
  81 option () {
  82         local varname="$1"; shift
  83         local value="$*"
  84
  85         config_set "$CONFIG_SECTION" "${varname}" "${value}"
  86         [ -n "$NO_CALLBACK" ] || option_cb "$varname" "$*"
  87 }
  88
  89 list() {
  90         local varname="$1"; shift
  91         local value="$*"
  92         local len
  93
  94         config_get len "$CONFIG_SECTION" "${varname}_LENGTH" 0
  95         [ $len = 0 ] && append CONFIG_LIST_STATE "${CONFIG_SECTION}_${varname}"
  96         len=$((len + 1))
  97         config_set "$CONFIG_SECTION" "${varname}_ITEM$len" "$value"
  98         config_set "$CONFIG_SECTION" "${varname}_LENGTH" "$len"
  99         append "CONFIG_${CONFIG_SECTION}_${varname}" "$value" "$LIST_SEP"
 100         [ -n "$NO_CALLBACK" ] || list_cb "$varname" "$*"
 101 }
 102
 103 config_unset() {
 104         config_set "$1" "$2" ""
 105 }
 106
 107 # config_get <variable> <section> <option> [<default>]
 108 # config_get <section> <option>
 109 config_get() {
 110         case "$2${3:-$1}" in
 111                 *[^A-Za-z0-9_]*) : ;;
 112                 *)
 113                         case "$3" in
 114                                 "") eval echo "\"\${CONFIG_${1}_${2}:-\${4}}\"";;
 115                                 *)  eval export ${NO_EXPORT:+-n} -- "${1}=\${CONFIG_${2}_${3}:-\${4}}";;
 116                         esac
 117                 ;;
 118         esac
 119 }
 120
 121 # config_get_bool <variable> <section> <option> [<default>]
 122 config_get_bool() {
 123         local _tmp
 124         config_get _tmp "$2" "$3" "$4"
 125         case "$_tmp" in
 126                 1|on|true|yes|enabled) _tmp=1;;
 127                 0|off|false|no|disabled) _tmp=0;;
 128                 *) _tmp="$4";;
 129         esac
 130         export ${NO_EXPORT:+-n} "$1=$_tmp"
 131 }
 132
 133 config_set() {
 134         local section="$1"
 135         local option="$2"
 136         local value="$3"
 137
 138         export ${NO_EXPORT:+-n} "CONFIG_${section}_${option}=${value}"
 139 }
 140
 141 config_foreach() {
 142         local ___function="$1"
 143         [ "$#" -ge 1 ] && shift
 144         local ___type="$1"
 145         [ "$#" -ge 1 ] && shift
 146         local section cfgtype
 147
 148         [ -z "$CONFIG_SECTIONS" ] && return 0
 149         for section in ${CONFIG_SECTIONS}; do
 150                 config_get cfgtype "$section" TYPE
 151                 [ -n "$___type" ] && [ "x$cfgtype" != "x$___type" ] && continue
 152                 eval "$___function \"\$section\" \"\$@\""
 153         done
 154 }
 155
 156 config_list_foreach() {
 157         [ "$#" -ge 3 ] || return 0
 158         local section="$1"; shift
 159         local option="$1"; shift
 160         local function="$1"; shift
 161         local val
 162         local len
 163         local c=1
 164
 165         config_get len "${section}" "${option}_LENGTH"
 166         [ -z "$len" ] && return 0
 167         while [ $c -le "$len" ]; do
 168                 config_get val "${section}" "${option}_ITEM$c"
 169                 eval "$function \"\$val\" \"\$@\""
 170                 c="$((c + 1))"
 171         done
 172 }
 173
 174 default_prerm() {
 175         local root="${IPKG_INSTROOT}"
 176         local pkgname="$(basename ${1%.*})"
 177         local ret=0
 178
 179         if [ -f "$root/usr/lib/opkg/info/${pkgname}.prerm-pkg" ]; then
 180                 ( . "$root/usr/lib/opkg/info/${pkgname}.prerm-pkg" )
 181                 ret=$?
 182         fi
 183
 184         local shell="$(command -v bash)"
 185         for i in $(grep -s "^/etc/init.d/" "$root/usr/lib/opkg/info/${pkgname}.list"); do
 186                 if [ -n "$root" ]; then
 187                         ${shell:-/bin/sh} "$root/etc/rc.common" "$root$i" disable
 188                 else
 189                         if [ "$PKG_UPGRADE" != "1" ]; then
 190                                 "$i" disable
 191                         fi
 192                         "$i" stop
 193                 fi
 194         done
 195
 196         return $ret
 197 }
 198
 199 add_group_and_user() {
 200         local pkgname="$1"
 201         local rusers="$(sed -ne 's/^Require-User: *//p' $root/usr/lib/opkg/info/${pkgname}.control 2>/dev/null)"
 202
 203         if [ -n "$rusers" ]; then
 204                 local tuple oIFS="$IFS"
 205                 for tuple in $rusers; do
 206                         local uid gid uname gname
 207
 208                         IFS=":"
 209                         set -- $tuple; uname="$1"; gname="$2"
 210                         IFS="="
 211                         set -- $uname; uname="$1"; uid="$2"
 212                         set -- $gname; gname="$1"; gid="$2"
 213                         IFS="$oIFS"
 214
 215                         if [ -n "$gname" ] && [ -n "$gid" ]; then
 216                                 group_exists "$gname" || group_add "$gname" "$gid"
 217                         elif [ -n "$gname" ]; then
 218                                 gid="$(group_add_next "$gname")"
 219                         fi
 220
 221                         if [ -n "$uname" ]; then
 222                                 user_exists "$uname" || user_add "$uname" "$uid" "$gid"
 223                         fi
 224
 225                         if [ -n "$uname" ] && [ -n "$gname" ]; then
 226                                 group_add_user "$gname" "$uname"
 227                         fi
 228
 229                         unset uid gid uname gname
 230                 done
 231         fi
 232 }
 233
 234 default_postinst() {
 235         local root="${IPKG_INSTROOT}"
 236         local pkgname="$(basename ${1%.*})"
 237         local filelist="/usr/lib/opkg/info/${pkgname}.list"
 238         local ret=0
 239
 240         add_group_and_user "${pkgname}"
 241
 242         if [ -f "$root/usr/lib/opkg/info/${pkgname}.postinst-pkg" ]; then
 243                 ( . "$root/usr/lib/opkg/info/${pkgname}.postinst-pkg" )
 244                 ret=$?
 245         fi
 246
 247         if [ -d "$root/rootfs-overlay" ]; then
 248                 cp -R $root/rootfs-overlay/. $root/
 249                 rm -fR $root/rootfs-overlay/
 250         fi
 251
 252         if [ -z "$root" ]; then
 253                 if grep -m1 -q -s "^/etc/modules.d/" "$filelist"; then
 254                         kmodloader
 255                 fi
 256
 257                 if grep -m1 -q -s "^/etc/sysctl.d/" "$filelist"; then
 258                         /etc/init.d/sysctl restart
 259                 fi
 260
 261                 if grep -m1 -q -s "^/etc/uci-defaults/" "$filelist"; then
 262                         [ -d /tmp/.uci ] || mkdir -p /tmp/.uci
 263                         for i in $(grep -s "^/etc/uci-defaults/" "$filelist"); do
 264                                 ( [ -f "$i" ] && cd "$(dirname $i)" && . "$i" ) && rm -f "$i"
 265                         done
 266                         uci commit
 267                 fi
 268
 269                 rm -f /tmp/luci-indexcache
 270         fi
 271
 272         local shell="$(command -v bash)"
 273         for i in $(grep -s "^/etc/init.d/" "$root$filelist"); do
 274                 if [ -n "$root" ]; then
 275                         ${shell:-/bin/sh} "$root/etc/rc.common" "$root$i" enable
 276                 else
 277                         if [ "$PKG_UPGRADE" != "1" ]; then
 278                                 "$i" enable
 279                         fi
 280                         "$i" start
 281                 fi
 282         done
 283
 284         return $ret
 285 }
 286
 287 include() {
 288         local file
 289
 290         for file in $(ls $1/*.sh 2>/dev/null); do
 291                 . $file
 292         done
 293 }
 294
 295 find_mtd_index() {
 296         local PART="$(grep "\"$1\"" /proc/mtd | awk -F: '{print $1}')"
 297         local INDEX="${PART##mtd}"
 298
 299         echo ${INDEX}
 300 }
 301
 302 find_mtd_part() {
 303         local INDEX=$(find_mtd_index "$1")
 304         local PREFIX=/dev/mtdblock
 305
 306         [ -d /dev/mtdblock ] && PREFIX=/dev/mtdblock/
 307         echo "${INDEX:+$PREFIX$INDEX}"
 308 }
 309
 310 group_add() {
 311         local name="$1"
 312         local gid="$2"
 313         local rc
 314         [ -f "${IPKG_INSTROOT}/etc/group" ] || return 1
 315         [ -n "$IPKG_INSTROOT" ] || lock /var/lock/group
 316         echo "${name}:x:${gid}:" >> ${IPKG_INSTROOT}/etc/group
 317         [ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/group
 318 }
 319
 320 group_exists() {
 321         grep -qs "^${1}:" ${IPKG_INSTROOT}/etc/group
 322 }
 323
 324 group_add_next() {
 325         local gid gids
 326         gid=$(grep -s "^${1}:" ${IPKG_INSTROOT}/etc/group | cut -d: -f3)
 327         if [ -n "$gid" ]; then
 328                 echo $gid
 329                 return
 330         fi
 331         gids=$(cut -d: -f3 ${IPKG_INSTROOT}/etc/group)
 332         gid=65536
 333         while echo "$gids" | grep -q "^$gid$"; do
 334                 gid=$((gid + 1))
 335         done
 336         group_add $1 $gid
 337         echo $gid
 338 }
 339
 340 group_add_user() {
 341         local grp delim=","
 342         grp=$(grep -s "^${1}:" ${IPKG_INSTROOT}/etc/group)
 343         echo "$grp" | cut -d: -f4 | grep -q $2 && return
 344         echo "$grp" | grep -q ":$" && delim=""
 345         [ -n "$IPKG_INSTROOT" ] || lock /var/lock/passwd
 346         sed -i "s/$grp/$grp$delim$2/g" ${IPKG_INSTROOT}/etc/group
 347         [ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/passwd
 348 }
 349
 350 user_add() {
 351         local name="${1}"
 352         local uid="${2}"
 353         local gid="${3}"
 354         local desc="${4:-$1}"
 355         local home="${5:-/var/run/$1}"
 356         local shell="${6:-/bin/false}"
 357         local rc
 358         [ -z "$uid" ] && {
 359                 uids=$(cut -d: -f3 ${IPKG_INSTROOT}/etc/passwd)
 360                 uid=65536
 361                 while echo "$uids" | grep -q "^$uid$"; do
 362                         uid=$((uid + 1))
 363                 done
 364         }
 365         [ -z "$gid" ] && gid=$uid
 366         [ -f "${IPKG_INSTROOT}/etc/passwd" ] || return 1
 367         [ -n "$IPKG_INSTROOT" ] || lock /var/lock/passwd
 368         echo "${name}:x:${uid}:${gid}:${desc}:${home}:${shell}" >> ${IPKG_INSTROOT}/etc/passwd
 369         echo "${name}:x:0:0:99999:7:::" >> ${IPKG_INSTROOT}/etc/shadow
 370         [ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/passwd
 371 }
 372
 373 user_exists() {
 374         grep -qs "^${1}:" ${IPKG_INSTROOT}/etc/passwd
 375 }
 376
 377 board_name() {
 378         [ -e /tmp/sysinfo/board_name ] && cat /tmp/sysinfo/board_name || echo "generic"
 379 }
 380
 381 [ -z "$IPKG_INSTROOT" ] && [ -f /lib/config/uci.sh ] && . /lib/config/uci.sh