1#!/bin/sh
2# Copyright (C) 2006-2011 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	[ $len = 0 ] && append CONFIG_LIST_STATE "${CONFIG_SECTION}_${varname}"
101	len=$(($len + 1))
102	config_set "$CONFIG_SECTION" "${varname}_ITEM$len" "$value"
103	config_set "$CONFIG_SECTION" "${varname}_LENGTH" "$len"
104	append "CONFIG_${CONFIG_SECTION}_${varname}" "$value" "$LIST_SEP"
105	list_cb "$varname" "$*"
106}
107
108config_rename() {
109	local OLD="$1"
110	local NEW="$2"
111	local oldvar
112	local newvar
113
114	[ -n "$OLD" -a -n "$NEW" ] || return
115	for oldvar in `set | grep ^CONFIG_${OLD}_ | \
116		sed -e 's/\(.*\)=.*$/\1/'` ; do
117		newvar="CONFIG_${NEW}_${oldvar##CONFIG_${OLD}_}"
118		eval "export ${NO_EXPORT:+-n} \"$newvar=\${$oldvar}\""
119		unset "$oldvar"
120	done
121	export ${NO_EXPORT:+-n} CONFIG_SECTIONS="$(echo " $CONFIG_SECTIONS " | sed -e "s, $OLD , $NEW ,")"
122
123	[ "$CONFIG_SECTION" = "$OLD" ] && export ${NO_EXPORT:+-n} CONFIG_SECTION="$NEW"
124}
125
126config_unset() {
127	config_set "$1" "$2" ""
128}
129
130config_clear() {
131	local SECTION="$1"
132	local oldvar
133
134	list_remove CONFIG_SECTIONS "$SECTION"
135	export ${NO_EXPORT:+-n} CONFIG_SECTIONS="${SECTION:+$CONFIG_SECTIONS}"
136
137	for oldvar in `set | grep ^CONFIG_${SECTION:+${SECTION}_} | \
138		sed -e 's/\(.*\)=.*$/\1/'` ; do
139		unset $oldvar
140	done
141}
142
143# config_get <variable> <section> <option> [<default>]
144# config_get <section> <option>
145config_get() {
146	case "$3" in
147		"") eval echo "\${CONFIG_${1}_${2}:-\${4}}";;
148		*)  eval export ${NO_EXPORT:+-n} -- "${1}=\${CONFIG_${2}_${3}:-\${4}}";;
149	esac
150}
151
152# config_get_bool <variable> <section> <option> [<default>]
153config_get_bool() {
154	local _tmp
155	config_get _tmp "$2" "$3" "$4"
156	case "$_tmp" in
157		1|on|true|enabled) _tmp=1;;
158		0|off|false|disabled) _tmp=0;;
159		*) _tmp="$4";;
160	esac
161	export ${NO_EXPORT:+-n} "$1=$_tmp"
162}
163
164config_set() {
165	local section="$1"
166	local option="$2"
167	local value="$3"
168	local old_section="$CONFIG_SECTION"
169
170	CONFIG_SECTION="$section"
171	option "$option" "$value"
172	CONFIG_SECTION="$old_section"
173}
174
175config_foreach() {
176	local ___function="$1"
177	[ "$#" -ge 1 ] && shift
178	local ___type="$1"
179	[ "$#" -ge 1 ] && shift
180	local section cfgtype
181
182	[ -z "$CONFIG_SECTIONS" ] && return 0
183	for section in ${CONFIG_SECTIONS}; do
184		config_get cfgtype "$section" TYPE
185		[ -n "$___type" -a "x$cfgtype" != "x$___type" ] && continue
186		eval "$___function \"\$section\" \"\$@\""
187	done
188}
189
190config_list_foreach() {
191	[ "$#" -ge 3 ] || return 0
192	local section="$1"; shift
193	local option="$1"; shift
194	local function="$1"; shift
195	local val
196	local len
197	local c=1
198
199	config_get len "${section}" "${option}_LENGTH"
200	[ -z "$len" ] && return 0
201	while [ $c -le "$len" ]; do
202		config_get val "${section}" "${option}_ITEM$c"
203		eval "$function \"\$val\" \"$@\""
204		c="$(($c + 1))"
205	done
206}
207
208load_modules() {
209	[ -d /etc/modules.d ] && {
210		cd /etc/modules.d
211		sed 's/^[^#]/insmod &/' $* | ash 2>&- || :
212	}
213}
214
215include() {
216	local file
217
218	for file in $(ls $1/*.sh 2>/dev/null); do
219		. $file
220	done
221}
222
223find_mtd_part() {
224	local PART="$(grep "\"$1\"" /proc/mtd | awk -F: '{print $1}')"
225	local PREFIX=/dev/mtdblock
226
227	PART="${PART##mtd}"
228	[ -d /dev/mtdblock ] && PREFIX=/dev/mtdblock/
229	echo "${PART:+$PREFIX$PART}"
230}
231
232strtok() { # <string> { <variable> [<separator>] ... }
233	local tmp
234	local val="$1"
235	local count=0
236
237	shift
238
239	while [ $# -gt 1 ]; do
240		tmp="${val%%$2*}"
241
242		[ "$tmp" = "$val" ] && break
243
244		val="${val#$tmp$2}"
245
246		export ${NO_EXPORT:+-n} "$1=$tmp"; count=$((count+1))
247		shift 2
248	done
249
250	if [ $# -gt 0 -a -n "$val" ]; then
251		export ${NO_EXPORT:+-n} "$1=$val"; count=$((count+1))
252	fi
253
254	return $count
255}
256
257
258jffs2_mark_erase() {
259	local part="$(find_mtd_part "$1")"
260	[ -z "$part" ] && {
261		echo Partition not found.
262		return 1
263	}
264	echo -e "\xde\xad\xc0\xde" | mtd -qq write - "$1"
265}
266
267uci_apply_defaults() {
268	cd /etc/uci-defaults || return 0
269	files="$(ls)"
270	[ -z "$files" ] && return 0
271	mkdir -p /tmp/.uci
272	for file in $files; do
273		( . "./$(basename $file)" ) && rm -f "$file"
274	done
275	uci commit
276}
277
278group_add() {
279	local name="$1"
280	local gid="$2"
281	local rc
282	[ -f "${IPKG_INSTROOT}/etc/group" ] || return 1
283	[ -n "$IPKG_INSTROOT" ] || lock /var/lock/group
284	echo "${name}:x:${gid}:" >> ${IPKG_INSTROOT}/etc/group
285	rc=$?
286	[ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/group
287	return $rc
288}
289
290group_exists() {
291	grep -qs "^${1}:" ${IPKG_INSTROOT}/etc/group
292}
293
294user_add() {
295	local name="${1}"
296	local uid="${2}"
297	local gid="${3:-$2}"
298	local desc="${4:-$1}"
299	local home="${5:-/var/run/$1}"
300	local shell="${6:-/bin/false}"
301	local rc
302	[ -f "${IPKG_INSTROOT}/etc/passwd" ] || return 1
303	[ -n "$IPKG_INSTROOT" ] || lock /var/lock/passwd
304	echo "${name}:x:${uid}:${gid}:${desc}:${home}:${shell}" >> ${IPKG_INSTROOT}/etc/passwd
305	echo "${name}:x:0:0:99999:7:::" >> ${IPKG_INSTROOT}/etc/shadow
306	rc=$?
307	[ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/passwd
308	return $rc
309}
310
311user_exists() {
312	grep -qs "^${1}:" ${IPKG_INSTROOT}/etc/passwd
313}
314
315
316pi_include() {
317	if [ -f "/tmp/overlay/$1" ]; then
318		. "/tmp/overlay/$1"
319	elif [ -f "$1" ]; then
320		. "$1"
321	elif [ -d "/tmp/overlay/$1" ]; then
322		if [ -n "$(ls /tmp/overlay/$1/*.sh 2>/dev/null)" ]; then
323			for src_script in /tmp/overlay/$1/*.sh; do
324				. "$src_script"
325			done
326		fi
327	elif [ -d "$1" ]; then
328		if [ -n "$(ls $1/*.sh 2>/dev/null)" ]; then
329			for src_script in $1/*.sh; do
330				. "$src_script"
331			done
332		fi
333	else
334		echo "WARNING: $1 not found"
335		return 1
336	fi
337	return 0
338}
339
340[ -z "$IPKG_INSTROOT" -a -f /lib/config/uci.sh ] && . /lib/config/uci.sh
341