Root/package/base-files/files/etc/functions.sh

1#!/bin/sh
2# Copyright (C) 2006 OpenWrt.org
3# Copyright (C) 2006 Fokus Fraunhofer <carsten.tittel@fokus.fraunhofer.de>
4
5
6debug () {
7    ${DEBUG:-:} "$@"
8}
9mount() {
10    busybox mount "$@"
11}
12
13# newline
14N="
15"
16
17_C=0
18NO_EXPORT=1
19LOAD_STATE=1
20LIST_SEP=" "
21
22hotplug_dev() {
23    env -i ACTION=$1 INTERFACE=$2 /sbin/hotplug-call net
24}
25
26append() {
27    local var="$1"
28    local value="$2"
29    local sep="${3:- }"
30    
31    eval "export ${NO_EXPORT:+-n} -- \"$var=\${$var:+\${$var}\${value:+\$sep}}\$value\""
32}
33
34list_contains() {
35    local var="$1"
36    local str="$2"
37    local val
38
39    eval "val=\" \${$var} \""
40    [ "${val%% $str *}" != "$val" ]
41}
42
43list_remove() {
44    local var="$1"
45    local remove="$2"
46    local val
47
48    eval "val=\" \${$var} \""
49    val1="${val%% $remove *}"
50    [ "$val1" = "$val" ] && return
51    val2="${val##* $remove }"
52    [ "$val2" = "$val" ] && return
53    val="${val1## } ${val2%% }"
54    val="${val%% }"
55    eval "export ${NO_EXPORT:+-n} -- \"$var=\$val\""
56}
57
58config_load() {
59    [ -n "$IPKG_INSTROOT" ] && return 0
60    uci_load "$@"
61}
62
63reset_cb() {
64    config_cb() { return 0; }
65    option_cb() { return 0; }
66    list_cb() { return 0; }
67}
68reset_cb
69
70package() {
71    return 0
72}
73
74config () {
75    local cfgtype="$1"
76    local name="$2"
77    
78    export ${NO_EXPORT:+-n} CONFIG_NUM_SECTIONS=$(($CONFIG_NUM_SECTIONS + 1))
79    name="${name:-cfg$CONFIG_NUM_SECTIONS}"
80    append CONFIG_SECTIONS "$name"
81    [ -n "$NO_CALLBACK" ] || config_cb "$cfgtype" "$name"
82    export ${NO_EXPORT:+-n} CONFIG_SECTION="$name"
83    export ${NO_EXPORT:+-n} "CONFIG_${CONFIG_SECTION}_TYPE=$cfgtype"
84}
85
86option () {
87    local varname="$1"; shift
88    local value="$*"
89
90    export ${NO_EXPORT:+-n} "CONFIG_${CONFIG_SECTION}_${varname}=$value"
91    [ -n "$NO_CALLBACK" ] || option_cb "$varname" "$*"
92}
93
94list() {
95    local varname="$1"; shift
96    local value="$*"
97    local len
98
99    config_get len "$CONFIG_SECTION" "${varname}_LENGTH" 0
100    len=$(($len + 1))
101    config_set "$CONFIG_SECTION" "${varname}_ITEM$len" "$value"
102    config_set "$CONFIG_SECTION" "${varname}_LENGTH" "$len"
103    append "CONFIG_${CONFIG_SECTION}_${varname}" "$value" "$LIST_SEP"
104    list_cb "$varname" "$*"
105}
106
107config_rename() {
108    local OLD="$1"
109    local NEW="$2"
110    local oldvar
111    local newvar
112    
113    [ -n "$OLD" -a -n "$NEW" ] || return
114    for oldvar in `set | grep ^CONFIG_${OLD}_ | \
115        sed -e 's/\(.*\)=.*$/\1/'` ; do
116        newvar="CONFIG_${NEW}_${oldvar##CONFIG_${OLD}_}"
117        eval "export ${NO_EXPORT:+-n} \"$newvar=\${$oldvar}\""
118        unset "$oldvar"
119    done
120    export ${NO_EXPORT:+-n} CONFIG_SECTIONS="$(echo " $CONFIG_SECTIONS " | sed -e "s, $OLD , $NEW ,")"
121    
122    [ "$CONFIG_SECTION" = "$OLD" ] && export ${NO_EXPORT:+-n} CONFIG_SECTION="$NEW"
123}
124
125config_unset() {
126    config_set "$1" "$2" ""
127}
128
129config_clear() {
130    local SECTION="$1"
131    local oldvar
132
133    list_remove CONFIG_SECTIONS "$SECTION"
134    export ${NO_EXPORT:+-n} CONFIG_SECTIONS="${SECTION:+$CONFIG_SECTIONS}"
135
136    for oldvar in `set | grep ^CONFIG_${SECTION:+${SECTION}_} | \
137        sed -e 's/\(.*\)=.*$/\1/'` ; do
138        unset $oldvar
139    done
140}
141
142# config_get <variable> <section> <option> [<default>]
143# config_get <section> <option>
144config_get() {
145    case "$3" in
146        "") eval echo "\${CONFIG_${1}_${2}:-\${4}}";;
147        *) eval export ${NO_EXPORT:+-n} -- "${1}=\${CONFIG_${2}_${3}:-\${4}}";;
148    esac
149}
150
151# config_get_bool <variable> <section> <option> [<default>]
152config_get_bool() {
153    local _tmp
154    config_get _tmp "$2" "$3" "$4"
155    case "$_tmp" in
156        1|on|true|enabled) _tmp=1;;
157        0|off|false|disabled) _tmp=0;;
158        *) _tmp="$4";;
159    esac
160    export ${NO_EXPORT:+-n} "$1=$_tmp"
161}
162
163config_set() {
164    local section="$1"
165    local option="$2"
166    local value="$3"
167    local old_section="$CONFIG_SECTION"
168
169    CONFIG_SECTION="$section"
170    option "$option" "$value"
171    CONFIG_SECTION="$old_section"
172}
173
174config_foreach() {
175    local function="$1"
176    [ "$#" -ge 1 ] && shift
177    local type="$1"
178    [ "$#" -ge 1 ] && shift
179    local section cfgtype
180    
181    [ -z "$CONFIG_SECTIONS" ] && return 0
182    for section in ${CONFIG_SECTIONS}; do
183        config_get cfgtype "$section" TYPE
184        [ -n "$type" -a "x$cfgtype" != "x$type" ] && continue
185        eval "$function \"\$section\" \"\$@\""
186    done
187}
188
189config_list_foreach() {
190    [ "$#" -ge 3 ] || return 0
191    local section="$1"; shift
192    local option="$1"; shift
193    local function="$1"; shift
194    local val
195    local len
196    local c=1
197
198    config_get len "${section}" "${option}_LENGTH"
199    [ -z "$len" ] && return 0
200    while [ $c -le "$len" ]; do
201        config_get val "${section}" "${option}_ITEM$c"
202        eval "$function \"\$val\" \"$@\""
203        c="$(($c + 1))"
204    done
205}
206
207load_modules() {
208    [ -d /etc/modules.d ] && {
209        cd /etc/modules.d
210        sed 's/^[^#]/insmod &/' $* | ash 2>&- || :
211    }
212}
213
214include() {
215    local file
216    
217    for file in $(ls $1/*.sh 2>/dev/null); do
218        . $file
219    done
220}
221
222find_mtd_part() {
223    local PART="$(grep "\"$1\"" /proc/mtd | awk -F: '{print $1}')"
224    local PREFIX=/dev/mtdblock
225    
226    PART="${PART##mtd}"
227    [ -d /dev/mtdblock ] && PREFIX=/dev/mtdblock/
228    echo "${PART:+$PREFIX$PART}"
229}
230
231strtok() { # <string> { <variable> [<separator>] ... }
232    local tmp
233    local val="$1"
234    local count=0
235
236    shift
237
238    while [ $# -gt 1 ]; do
239        tmp="${val%%$2*}"
240
241        [ "$tmp" = "$val" ] && break
242
243        val="${val#$tmp$2}"
244
245        export ${NO_EXPORT:+-n} "$1=$tmp"; count=$((count+1))
246        shift 2
247    done
248
249    if [ $# -gt 0 -a -n "$val" ]; then
250        export ${NO_EXPORT:+-n} "$1=$val"; count=$((count+1))
251    fi
252
253    return $count
254}
255
256
257jffs2_mark_erase() {
258    local part="$(find_mtd_part "$1")"
259    [ -z "$part" ] && {
260        echo Partition not found.
261        return 1
262    }
263    echo -e "\xde\xad\xc0\xde" | mtd -qq write - "$1"
264}
265
266uci_apply_defaults() {
267    cd /etc/uci-defaults || return 0
268    files="$(ls)"
269    [ -z "$files" ] && return 0
270    mkdir -p /tmp/.uci
271    for file in $files; do
272        ( . "./$(basename $file)" ) && rm -f "$file"
273    done
274    uci commit
275}
276
277[ -z "$IPKG_INSTROOT" -a -f /lib/config/uci.sh ] && . /lib/config/uci.sh
278

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