summaryrefslogtreecommitdiff
path: root/package/base-files/files/lib/functions.sh
blob: 02048eab1215bfd667cd77ec7d1b7c94bbb41af0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
#!/bin/sh
# Copyright (C) 2006-2011 OpenWrt.org
# Copyright (C) 2006 Fokus Fraunhofer <carsten.tittel@fokus.fraunhofer.de>


debug () {
	${DEBUG:-:} "$@"
}
mount() {
	busybox mount "$@"
}

# newline
N="
"

_C=0
NO_EXPORT=1
LOAD_STATE=1
LIST_SEP=" "

hotplug_dev() {
	env -i ACTION=$1 INTERFACE=$2 /sbin/hotplug-call net
}

append() {
	local var="$1"
	local value="$2"
	local sep="${3:- }"

	eval "export ${NO_EXPORT:+-n} -- \"$var=\${$var:+\${$var}\${value:+\$sep}}\$value\""
}

list_contains() {
	local var="$1"
	local str="$2"
	local val

	eval "val=\" \${$var} \""
	[ "${val%% $str *}" != "$val" ]
}

list_remove() {
	local var="$1"
	local remove="$2"
	local val

	eval "val=\" \${$var} \""
	val1="${val%% $remove *}"
	[ "$val1" = "$val" ] && return
	val2="${val##* $remove }"
	[ "$val2" = "$val" ] && return
	val="${val1## } ${val2%% }"
	val="${val%% }"
	eval "export ${NO_EXPORT:+-n} -- \"$var=\$val\""
}

config_load() {
	[ -n "$IPKG_INSTROOT" ] && return 0
	uci_load "$@"
}

reset_cb() {
	config_cb() { return 0; }
	option_cb() { return 0; }
	list_cb() { return 0; }
}
reset_cb

package() {
	return 0
}

config () {
	local cfgtype="$1"
	local name="$2"

	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 ${NO_EXPORT:+-n} "CONFIG_${CONFIG_SECTION}_TYPE=$cfgtype"
}

option () {
	local varname="$1"; shift
	local value="$*"

	export ${NO_EXPORT:+-n} "CONFIG_${CONFIG_SECTION}_${varname}=$value"
	[ -n "$NO_CALLBACK" ] || option_cb "$varname" "$*"
}

list() {
	local varname="$1"; shift
	local value="$*"
	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_rename() {
	local OLD="$1"
	local NEW="$2"
	local oldvar
	local newvar

	[ -n "$OLD" -a -n "$NEW" ] || return
	for oldvar in `set | grep ^CONFIG_${OLD}_ | \
		sed -e 's/\(.*\)=.*$/\1/'` ; do
		newvar="CONFIG_${NEW}_${oldvar##CONFIG_${OLD}_}"
		eval "export ${NO_EXPORT:+-n} \"$newvar=\${$oldvar}\""
		unset "$oldvar"
	done
	export ${NO_EXPORT:+-n} CONFIG_SECTIONS="$(echo " $CONFIG_SECTIONS " | sed -e "s, $OLD , $NEW ,")"

	[ "$CONFIG_SECTION" = "$OLD" ] && export ${NO_EXPORT:+-n} CONFIG_SECTION="$NEW"
}

config_unset() {
	config_set "$1" "$2" ""
}

config_clear() {
	local SECTION="$1"
	local oldvar

	list_remove CONFIG_SECTIONS "$SECTION"
	export ${NO_EXPORT:+-n} CONFIG_SECTIONS="${SECTION:+$CONFIG_SECTIONS}"

	for oldvar in `set | grep ^CONFIG_${SECTION:+${SECTION}_} | \
		sed -e 's/\(.*\)=.*$/\1/'` ; do
		unset $oldvar
	done
}

# config_get <variable> <section> <option> [<default>]
# config_get <section> <option>
config_get() {
	case "$3" in
		"") eval echo "\${CONFIG_${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 "$2" "$3" "$4"
	case "$_tmp" in
		1|on|true|enabled) _tmp=1;;
		0|off|false|disabled) _tmp=0;;
		*) _tmp="$4";;
	esac
	export ${NO_EXPORT:+-n} "$1=$_tmp"
}

config_set() {
	local section="$1"
	local option="$2"
	local value="$3"
	local old_section="$CONFIG_SECTION"

	CONFIG_SECTION="$section"
	option "$option" "$value"
	CONFIG_SECTION="$old_section"
}

config_foreach() {
	local ___function="$1"
	[ "$#" -ge 1 ] && shift
	local ___type="$1"
	[ "$#" -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
	local section="$1"; shift
	local option="$1"; shift
	local function="$1"; 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
}

load_modules() {
	[ -d /etc/modules.d ] && {
		cd /etc/modules.d
		sed 's/^[^#]/insmod &/' $* | ash 2>&- || :
	}
}

include() {
	local file

	for file in $(ls $1/*.sh 2>/dev/null); do
		. $file
	done
}

find_mtd_part() {
	local PART="$(grep "\"$1\"" /proc/mtd | awk -F: '{print $1}')"
	local PREFIX=/dev/mtdblock

	PART="${PART##mtd}"
	[ -d /dev/mtdblock ] && PREFIX=/dev/mtdblock/
	echo "${PART:+$PREFIX$PART}"
}

strtok() { # <string> { <variable> [<separator>] ... }
	local tmp
	local val="$1"
	local count=0

	shift

	while [ $# -gt 1 ]; do
		tmp="${val%%$2*}"

		[ "$tmp" = "$val" ] && break

		val="${val#$tmp$2}"

		export ${NO_EXPORT:+-n} "$1=$tmp"; count=$((count+1))
		shift 2
	done

	if [ $# -gt 0 -a -n "$val" ]; then
		export ${NO_EXPORT:+-n} "$1=$val"; count=$((count+1))
	fi

	return $count
}


jffs2_mark_erase() {
	local part="$(find_mtd_part "$1")"
	[ -z "$part" ] && {
		echo Partition not found.
		return 1
	}
	echo -e "\xde\xad\xc0\xde" | mtd -qq write - "$1"
}

uci_apply_defaults() {
	cd /etc/uci-defaults || return 0
	files="$(ls)"
	[ -z "$files" ] && return 0
	mkdir -p /tmp/.uci
	for file in $files; do
		( . "./$(basename $file)" ) && rm -f "$file"
	done
	uci commit
}

group_add() {
	local name="$1"
	local gid="$2"
	local rc
	[ -f "${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
}

user_add() {
	local name="${1}"
	local uid="${2}"
	local gid="${3:-$2}"
	local desc="${4:-$1}"
	local home="${5:-/var/run/$1}"
	local shell="${6:-/bin/false}"
	local rc
	[ -f "${IPKG_INSTROOT}/etc/passwd" ] || return 1
	[ -n "$IPKG_INSTROOT" ] || lock /var/lock/passwd
	echo "${name}:x:${uid}:${gid}:${desc}:${home}:${shell}" >> ${IPKG_INSTROOT}/etc/passwd
	rc=$?
	[ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/passwd
	return $rc
}

user_exists() {
	grep -qs "^${1}:" ${IPKG_INSTROOT}/etc/passwd
}


pi_include() {
	if [ -f "/tmp/overlay/$1" ]; then
		. "/tmp/overlay/$1"
	elif [ -f "$1" ]; then
		. "$1"
	elif [ -d "/tmp/overlay/$1" ]; then
		if [ -n "$(ls /tmp/overlay/$1/*.sh 2>/dev/null)" ]; then
			for src_script in /tmp/overlay/$1/*.sh; do
				. "$src_script"
			done
		fi
	elif [ -d "$1" ]; then
		if [ -n "$(ls $1/*.sh 2>/dev/null)" ]; then
			for src_script in $1/*.sh; do
				. "$src_script"
			done
		fi
	else
		echo "WARNING: $1 not found"
		return 1
	fi
	return 0
}

[ -z "$IPKG_INSTROOT" -a -f /lib/config/uci.sh ] && . /lib/config/uci.sh