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 "$3" in
 111                 "") eval echo "\"\${CONFIG_${1}_${2}:-\${4}}\"";;
 112                 *)  eval export ${NO_EXPORT:+-n} -- "${1}=\${CONFIG_${2}_${3}:-\${4}}";;
 113         esac
 114 }
 115
 116 # config_get_bool <variable> <section> <option> [<default>]
 117 config_get_bool() {
 118         local _tmp
 119         config_get _tmp "$2" "$3" "$4"
 120         case "$_tmp" in
 121                 1|on|true|yes|enabled) _tmp=1;;
 122                 0|off|false|no|disabled) _tmp=0;;
 123                 *) _tmp="$4";;
 124         esac
 125         export ${NO_EXPORT:+-n} "$1=$_tmp"
 126 }
 127
 128 config_set() {
 129         local section="$1"
 130         local option="$2"
 131         local value="$3"
 132
 133         export ${NO_EXPORT:+-n} "CONFIG_${section}_${option}=${value}"
 134 }
 135
 136 config_foreach() {
 137         local ___function="$1"
 138         [ "$#" -ge 1 ] && shift
 139         local ___type="$1"
 140         [ "$#" -ge 1 ] && shift
 141         local section cfgtype
 142
 143         [ -z "$CONFIG_SECTIONS" ] && return 0
 144         for section in ${CONFIG_SECTIONS}; do
 145                 config_get cfgtype "$section" TYPE
 146                 [ -n "$___type" ] && [ "x$cfgtype" != "x$___type" ] && continue
 147                 eval "$___function \"\$section\" \"\$@\""
 148         done
 149 }
 150
 151 config_list_foreach() {
 152         [ "$#" -ge 3 ] || return 0
 153         local section="$1"; shift
 154         local option="$1"; shift
 155         local function="$1"; shift
 156         local val
 157         local len
 158         local c=1
 159
 160         config_get len "${section}" "${option}_LENGTH"
 161         [ -z "$len" ] && return 0
 162         while [ $c -le "$len" ]; do
 163                 config_get val "${section}" "${option}_ITEM$c"
 164                 eval "$function \"\$val\" \"\$@\""
 165                 c="$((c + 1))"
 166         done
 167 }
 168
 169 default_prerm() {
 170         local root="${IPKG_INSTROOT}"
 171         local pkgname="$(basename ${1%.*})"
 172         local ret=0
 173
 174         if [ -f "$root/usr/lib/opkg/info/${pkgname}.prerm-pkg" ]; then
 175                 ( . "$root/usr/lib/opkg/info/${pkgname}.prerm-pkg" )
 176                 ret=$?
 177         fi
 178
 179         local shell="$(which bash)"
 180         for i in $(grep -s "^/etc/init.d/" "$root/usr/lib/opkg/info/${pkgname}.list"); do
 181                 if [ -n "$root" ]; then
 182                         ${shell:-/bin/sh} "$root/etc/rc.common" "$root$i" disable
 183                 else
 184                         if [ "$PKG_UPGRADE" != "1" ]; then
 185                                 "$i" disable
 186                         fi
 187                         "$i" stop
 188                 fi
 189         done
 190
 191         return $ret
 192 }
 193
 194 add_group_and_user() {
 195         local pkgname="$1"
 196         local rusers="$(sed -ne 's/^Require-User: *//p' $root/usr/lib/opkg/info/${pkgname}.control 2>/dev/null)"
 197
 198         if [ -n "$rusers" ]; then
 199                 local tuple oIFS="$IFS"
 200                 for tuple in $rusers; do
 201                         local uid gid uname gname
 202
 203                         IFS=":"
 204                         set -- $tuple; uname="$1"; gname="$2"
 205                         IFS="="
 206                         set -- $uname; uname="$1"; uid="$2"
 207                         set -- $gname; gname="$1"; gid="$2"
 208                         IFS="$oIFS"
 209
 210                         if [ -n "$gname" ] && [ -n "$gid" ]; then
 211                                 group_exists "$gname" || group_add "$gname" "$gid"
 212                         elif [ -n "$gname" ]; then
 213                                 gid="$(group_add_next "$gname")"
 214                         fi
 215
 216                         if [ -n "$uname" ]; then
 217                                 user_exists "$uname" || user_add "$uname" "$uid" "$gid"
 218                         fi
 219
 220                         if [ -n "$uname" ] && [ -n "$gname" ]; then
 221                                 group_add_user "$gname" "$uname"
 222                         fi
 223
 224                         unset uid gid uname gname
 225                 done
 226         fi
 227 }
 228
 229 default_postinst() {
 230         local root="${IPKG_INSTROOT}"
 231         local pkgname="$(basename ${1%.*})"
 232         local filelist="/usr/lib/opkg/info/${pkgname}.list"
 233         local ret=0
 234
 235         add_group_and_user "${pkgname}"
 236
 237         if [ -f "$root/usr/lib/opkg/info/${pkgname}.postinst-pkg" ]; then
 238                 ( . "$root/usr/lib/opkg/info/${pkgname}.postinst-pkg" )
 239                 ret=$?
 240         fi
 241
 242         if [ -d "$root/rootfs-overlay" ]; then
 243                 cp -R $root/rootfs-overlay/. $root/
 244                 rm -fR $root/rootfs-overlay/
 245         fi
 246
 247         if [ -z "$root" ]; then
 248                 if grep -m1 -q -s "^/etc/modules.d/" "$filelist"; then
 249                         kmodloader
 250                 fi
 251
 252                 if grep -m1 -q -s "^/etc/sysctl.d/" "$filelist"; then
 253                         /etc/init.d/sysctl restart
 254                 fi
 255
 256                 if grep -m1 -q -s "^/etc/uci-defaults/" "$filelist"; then
 257                         [ -d /tmp/.uci ] || mkdir -p /tmp/.uci
 258                         for i in $(grep -s "^/etc/uci-defaults/" "$filelist"); do
 259                                 ( [ -f "$i" ] && cd "$(dirname $i)" && . "$i" ) && rm -f "$i"
 260                         done
 261                         uci commit
 262                 fi
 263
 264                 rm -f /tmp/luci-indexcache
 265         fi
 266
 267         local shell="$(which bash)"
 268         for i in $(grep -s "^/etc/init.d/" "$root$filelist"); do
 269                 if [ -n "$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}:" >> ${IPKG_INSTROOT}/etc/group
 312         [ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/group
 313 }
 314
 315 group_exists() {
 316         grep -qs "^${1}:" ${IPKG_INSTROOT}/etc/group
 317 }
 318
 319 group_add_next() {
 320         local gid gids
 321         gid=$(grep -s "^${1}:" ${IPKG_INSTROOT}/etc/group | cut -d: -f3)
 322         if [ -n "$gid" ]; then
 323                 echo $gid
 324                 return
 325         fi
 326         gids=$(cut -d: -f3 ${IPKG_INSTROOT}/etc/group)
 327         gid=65536
 328         while echo "$gids" | grep -q "^$gid$"; do
 329                 gid=$((gid + 1))
 330         done
 331         group_add $1 $gid
 332         echo $gid
 333 }
 334
 335 group_add_user() {
 336         local grp delim=","
 337         grp=$(grep -s "^${1}:" ${IPKG_INSTROOT}/etc/group)
 338         echo "$grp" | cut -d: -f4 | grep -q $2 && return
 339         echo "$grp" | grep -q ":$" && delim=""
 340         [ -n "$IPKG_INSTROOT" ] || lock /var/lock/passwd
 341         sed -i "s/$grp/$grp$delim$2/g" ${IPKG_INSTROOT}/etc/group
 342         [ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/passwd
 343 }
 344
 345 user_add() {
 346         local name="${1}"
 347         local uid="${2}"
 348         local gid="${3}"
 349         local desc="${4:-$1}"
 350         local home="${5:-/var/run/$1}"
 351         local shell="${6:-/bin/false}"
 352         local rc
 353         [ -z "$uid" ] && {
 354                 uids=$(cut -d: -f3 ${IPKG_INSTROOT}/etc/passwd)
 355                 uid=65536
 356                 while echo "$uids" | grep -q "^$uid$"; do
 357                         uid=$((uid + 1))
 358                 done
 359         }
 360         [ -z "$gid" ] && gid=$uid
 361         [ -f "${IPKG_INSTROOT}/etc/passwd" ] || return 1
 362         [ -n "$IPKG_INSTROOT" ] || lock /var/lock/passwd
 363         echo "${name}:x:${uid}:${gid}:${desc}:${home}:${shell}" >> ${IPKG_INSTROOT}/etc/passwd
 364         echo "${name}:x:0:0:99999:7:::" >> ${IPKG_INSTROOT}/etc/shadow
 365         [ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/passwd
 366 }
 367
 368 user_exists() {
 369         grep -qs "^${1}:" ${IPKG_INSTROOT}/etc/passwd
 370 }
 371
 372 board_name() {
 373         [ -e /tmp/sysinfo/board_name ] && cat /tmp/sysinfo/board_name || echo "generic"
 374 }
 375
 376 [ -z "$IPKG_INSTROOT" ] && [ -f /lib/config/uci.sh ] && . /lib/config/uci.sh