openwrt/lib/function.sh

/lib/function.sh

#!/bin/sh # Copyright (c) 2006-2014 openwrt.org # Copyright (c) 2006 Fokus Fraunhofer. 
De> # Copyright (C) Vertical Communications Debug () {${debug:-:} "$@"} # NewLine n= "" _c=0 no_export=1 Load_state=1 list_sep= "" "append () {local var= ' $ local value= ' $ ' local sep= ' ${3:-} ' eval ' export $ {no_export:+-n}--\ "$var =\${$var: +\${$var}\${value:+\ $sep}}\ $value \"} list_contains () {local var= "$" local s Tr= "$" local val eval "val=\" \${$var} \ "[${val%% $str *}"!= "$val"]} config_load () {[n] $IPK
    G_instroot "] && return 0 uci_load" $@ "} RESET_CB () {CONFIG_CB () {return 0;}
    OPTION_CB () {return 0;}
LIST_CB () {return 0;}} RESET_CB package () {return 0} config () {local cfgtype= "$" local name= "$" Export ${no_export:+-n} config_num_sections=$ (($CONFIG _num_sections + 1)) name= "${name:-cfg$config_num_sections}" append ConfiG_sections "$name" [-N "$NO _callback"] | | CONFIG_CB "$cfgtype" "$name" Export ${no_export:+-n} config_section= "$name" Export ${no_export:+-n} "config_${conf Ig_section}_type= $cfgtype "} option () {local varname=" $ "; shift local value=" $* "Export ${no_export:+-n} "Config_${config_section}_${varname}= $value" [-N "$NO _callback] | |  OPTION_CB "$varname" "$*"} list () {local varname= ' $ '; shift local value= ' $* ' local len Config_get len "$CONFIG _section" "${varname}_length" 0 [$len = 0] && append config_list_state "${config_section}_${varname } "len=$ (($len + 1)) Config_set" $CONFIG _section "" ${varname}_item$len "" $value "Config_set" $CONFIG _section " "${varname}_length" "$len" Append "Config_${config_section}_${varname}" "$value" "$LIST _sep" LIST_CB "$varname" "$ * "} config_unset () {config_set" $ ""} # Config_get <variable> <section> <option> [<de Fault>] # Config_get<section> <option> Config_get () {case "$" "") eval echo "\${config_${1}_${2}:-\${4}";;
    *) eval Export ${no_export:+-n}-"${1}=\${config_${2}_${3}:-\${4}";; ESAC} # Config_get_bool <variable> <section> <option> [<default>] Config_get_bool () {Local
        _tmp config_get _tmp "$" "$" "$" case "$_tmp" in 1|on|true|yes|enabled) _tmp=1;;
        0|off|false|no|disabled) _tmp=0;;
    * _tmp= "$";; ESAC export ${no_export:+-n} "$1=$_tmp"} config_set () {local section= "$" local option= "$" local value = "$" local old_section= $CONFIG _section "config_section=" $section "option" $option "$value" Config_sect ion= "$old _section"} config_foreach () {local ___function= "$" [$#-ge 1] && shift local ___type=
    "$" ["$#"-ge 1] && shift local section Cfgtype [-Z "$CONFIG _sections"] && return 0 For section in ${coNfig_sections};
        Do config_get cfgtype "$section" TYPE [-N "$___type"-A "X$cfgtype"!= "X$___type"] && continue Eval "$___function \" \ $section \ "\ \$@\" "Done} Config_list_foreach () {[" $# "-ge 3] | |-return 0 L Ocal section= "$"; Shift local option= "$"; Shift local function= "$"; Shift local Val Local len local c=1 config_get len "${section}" "${option}_length" [-Z "$len"] ;& return 0 While [$c-le "$len"]; Do Config_get val "${section}" "${option}_item$c" eval "$function \" \ $val \ "\" \$@\ "" c= "$ ($c + 1) "Done} insert_modules () {to M in $*, do if [-f/etc/modules.d/$m]; then sed ' s/^[^#]/i Nsmod &/'/etc/modules.d/$m | Ash 2>&-| | : Else modprobe $m fi do} default_prerm () {local name name=$ (basename $) | cut-d.-f1) [-f/usr/lib/opkg/info/${name}.prerm-pkg] &&amP;. /usr/lib/opkg/info/${name}.prerm-pkg for i in ' cat/usr/lib/opkg/info/${name}.list | grep "^/etc/init.d/"; Do $i disable $i stop doing} default_postinst () {local pkgname rusers pkgname=$ (echo $ basen Ame $) |  cut-d.-f1) rusers=$ (grep require-user: ${ipkg_instroot}/usr/lib/opkg/info/${pkgname}.control) [-N ' $rusers]
            && {Local user group UID GID for a in $ (echo $rusers | sed "s/require-user://g"); User= "" group= "for B in $ (echo $a | sed" s/://g ");  Do local ugname ugid ugname=$ (echo $b | cut-d=-f1) ugid=$ (echo $b |
                    -d=-f2) [-Z "$user"] && {user= $ugname uid= $ugid
                    Continue} gid= $ugid [-N ' $gid '] && { Group_exists $ugname | |
    Group_add $ugname $gid            } [-Z ' $gid] && {group_add_next $ugname g
                Id=$?
                    [-Z ' $group] && {user_exists $user | | user_add $user "$UID" $gid
            group= $ugname Continue} group_add_user $ugname $user Done} [F ${ipkg_instroot}/usr/lib/opkg/info/${pkgname}.postinst-pkg] && (. $ {ipkg_instroot}/usr/lib/opkg/info/${pkgname}.postinst-pkg) [-N "${ipkg_instroot}"] | | Rm-f/tmp/luci-indexcache 2>/dev/null ["$PKG _upgrade" = "1"] | | For i in ' Cat ${ipkg_instroot}/usr/lib/opkg/info/${pkgname}.list | grep "^/etc/init.d/"; Do [-N "${ipkg_instroot}"] && $ (which bash) ${ipkg_instroot}/etc/rc.common ${ipkg_instroot} $i enable; \ [-N "${ipkg_instroot}"] | | {$i enable $i start} done returN 0} include () {Local file with file in $ (ls $1/*.sh 2>/dev/null); does. $file Done} find_mtd_i Ndex () {local part= $ (grep "\ $1\" "/PROC/MTD | awk-f: ' {print} ')" "Local index=" ${part# #mtd} "Echo ${ind EX}} find_mtd_part () {Local index=$ (find_mtd_index "$") local Prefix=/dev/mtdblock [-d/dev/mtdblock] & 
    amp;& Prefix=/dev/mtdblock/echo "${index:+ $PREFIX $index}"} group_add () {local name= "$" local gid= "$" Local RC [-F "${ipkg_instroot}/etc/group"] | | return 1 [-n ' $IPKG _instroot] | |
    Lock/var/lock/group echo "${name}:x:${gid}:" >> ${ipkg_instroot}/etc/group rc=$? [-N ' $IPKG _instroot] | | Lock-u/var/lock/group return $RC} group_exists () {GREP-QS "^${1}:" ${ipkg_instroot}/etc/group} group_add_n Ext () {Local GID Gids gid=$ (grep-s "^${1}:" ${ipkg_instroot}/etc/group | cut-d:-F3) [-N ' $gid]] &&am P return $gid gids=$ (cat ${ipkg_instrooT}/etc/group | cut-d:-F3) gid=100 while [-N "$ (echo $gids | grep $gid) "]; Do gid=$ (GID + 1) is done Group_add the $gid return $gid} group_add_user () {Local GRP delim= , "grp=$ (grep-s" ^${1}: "${ipkg_instroot}/etc/group) [-Z" $ (echo $grp | Cut-d:-f4 | grep $) "] | | return [-N] $ (echo $grp | grep ": $") "] && delim=" "[-N" $IPKG _instroot] | | LOCK/VAR/LOCK/PASSWD sed-i "s/$grp/$grp $delim$2/g" ${ipkg_instroot}/etc/group [-N "$IPKG _instroot"] | | Lock-u/var/lock/passwd} user_add () {local name= ' ${1} ' local uid= ' ${2} ' local gid= ' ${3} ' local desc= ' $ 
        {4:-$1} ' local home= ' ${5:-/var/run/$1} ' local shell= ' ${6:-/bin/false} ' local RC [-Z ' $uid] && { uids=$ (Cat ${ipkg_instroot}/etc/passwd | cut-d:-F3) uid=100 while [-N "$ (echo $uids | grep $uid) "];
  Do uid=$ ((UID + 1) is done} [-Z "$gid"] && gid= $uid  [f "${ipkg_instroot}/etc/passwd"] | | return 1 [-n ' $IPKG _instroot] | |
    LOCK/VAR/LOCK/PASSWD echo "${name}:x:${uid}:${gid}:${desc}:${home}:${shell}" >> ${ipkg_instroot}/etc/passwd
    echo "${name}:x:0:0:99999:7:::" >> ${ipkg_instroot}/etc/shadow rc=$? [-N ' $IPKG _instroot] | | Lock-u/var/lock/passwd return $RC} user_exists () {GREP-QS "^${1}:" ${IPKG_INSTROOT}/ETC/PASSWD} [-Z "$IPK G_instroot "-a-f/lib/config/uci.sh] &&.
 /lib/config/uci.sh

The script contains commonly used config, config_get, etc. functions,
It is necessary to configure the OPENWRT system frequently.