summaryrefslogtreecommitdiff
path: root/package/system/procd/files/procd.sh
blob: b6433b82c0097c95e421689a934cf5ca5d479482 (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
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
# procd API:
#
# procd_open_service(name, [script]):
#   Initialize a new procd command message containing a service with one or more instances
#
# procd_close_service()
#   Send the command message for the service
#
# procd_open_instance([name]):
#   Add an instance to the service described by the previous procd_open_service call
#
# procd_set_param(type, [value...])
#   Available types:
#     command: command line (array).
#     respawn info: array with 3 values $restart_timeout $fail_hreshold $max_fail
#     env: environment variable (passed to the process)
#     data: arbitrary name/value pairs for detecting config changes (table)
#     file: configuration files (array)
#     netdev: bound network device (detects ifindex changes)
#     limits: resource limits (passed to the process)
#     user info: array with 1 values $username
#
#   No space separation is done for arrays/tables - use one function argument per command line argument
#
# procd_close_instance():
#   Complete the instance being prepared
#
# procd_kill(service, [instance]):
#   Kill a service instance (or all instances)
#

. $IPKG_INSTROOT/usr/share/libubox/jshn.sh

_PROCD_SERVICE=

_procd_call() {
	local old_cb

	json_set_namespace procd old_cb
	"$@"
	json_set_namespace $old_cb
}

_procd_wrapper() {
	while [ -n "$1" ]; do
		eval "$1() { _procd_call _$1 \"\$@\"; }"
		shift
	done
}

_procd_ubus_call() {
	local cmd="$1"

	[ -n "$PROCD_DEBUG" ] && json_dump >&2
	ubus call service "$cmd" "$(json_dump)"
	json_cleanup
}

_procd_open_service() {
	local name="$1"
	local script="$2"

	_PROCD_SERVICE="$name"
	_PROCD_INSTANCE_SEQ=0

	json_init
	json_add_string name "$name"
	[ -n "$script" ] && json_add_string script "$script"
	json_add_object instances
}

_procd_close_service() {
	json_close_object
	service_triggers
	_procd_ubus_call set
}

_procd_add_array_data() {
	while [ "$#" -gt 0 ]; do
		json_add_string "" "$1"
		shift
	done
}

_procd_add_array() {
	json_add_array "$1"
	shift
	_procd_add_array_data "$@"
	json_close_array
}

_procd_add_table_data() {
	while [ -n "$1" ]; do
		local var="${1%%=*}"
		local val="${1#*=}"
		[ "$1" = "$val" ] && val=
		json_add_string "$var" "$val"
		shift
	done
}

_procd_add_table() {
	json_add_object "$1"
	shift
	_procd_add_table_data "$@"
	json_close_object
}

_procd_open_instance() {
	local name="$1"; shift

	_PROCD_INSTANCE_SEQ="$(($_PROCD_INSTANCE_SEQ + 1))"
	name="${name:-instance$_PROCD_INSTANCE_SEQ}"
	json_add_object "$name"
	[ -n "$TRACE_SYSCALLS" ] && json_add_boolean trace "1"
}

_procd_open_trigger() {
	json_add_array "triggers"
}

_procd_open_validate() {
	json_add_array "validate"
}

_procd_add_jail() {
	json_add_object "jail"
	json_add_string name "$1"
	json_add_string root "/tmp/.jail/$1"

	shift
	
	for a in $@; do
		case $a in
		log)	json_add_boolean "log" "1";;
		ubus)	json_add_boolean "ubus" "1";;
		procfs)	json_add_boolean "procfs" "1";;
		sysfs)	json_add_boolean "sysfs" "1";;
		esac
	done
	json_add_object "mount"
	json_close_object
	json_close_object
}

_procd_add_jail_mount() {
	local _json_no_warning=1

	json_select "jail"
	[ $? = 0 ] || return
	json_select "mount"
	[ $? = 0 ] || {
		json_select ..
		return
	}
	for a in $@; do
		json_add_string "$a" "0"
	done
	json_select ..
	json_select ..
}

_procd_add_jail_mount_rw() {
	local _json_no_warning=1

	json_select "jail"
	[ $? = 0 ] || return
	json_select "mount"
	[ $? = 0 ] || {
		json_select ..
		return
	}
	for a in $@; do
		json_add_string "$a" "1"
	done
	json_select ..
	json_select ..
}

_procd_set_param() {
	local type="$1"; shift

	case "$type" in
		env|data|limits)
			_procd_add_table "$type" "$@"
		;;
		command|netdev|file|respawn|watch)
			_procd_add_array "$type" "$@"
		;;
		error)
			json_add_array "$type"
			json_add_string "" "$@"
			json_close_array
		;;
		nice)
			json_add_int "$type" "$1"
		;;
		user|seccomp)
			json_add_string "$type" "$1"
		;;
		stdout|stderr)
			json_add_boolean "$type" "$1"
		;;
	esac
}

_procd_add_interface_trigger() {
	json_add_array
	_procd_add_array_data "$1"
	shift

	json_add_array
	_procd_add_array_data "if"

	json_add_array
	_procd_add_array_data "eq" "interface" "$1"
	shift
	json_close_array

	json_add_array
	_procd_add_array_data "run_script" "$@"
	json_close_array

	json_close_array

	json_close_array
}

_procd_add_reload_interface_trigger() {
	local script=$(readlink "$initscript")
	local name=$(basename ${script:-$initscript})

	_procd_open_trigger
	_procd_add_interface_trigger "interface.*" $1 /etc/init.d/$name reload
	_procd_close_trigger
}

_procd_add_config_trigger() {
	json_add_array
	_procd_add_array_data "$1"
	shift

	json_add_array
	_procd_add_array_data "if"

	json_add_array
	_procd_add_array_data "eq" "package" "$1"
	shift
	json_close_array

	json_add_array
	_procd_add_array_data "run_script" "$@"
	json_close_array

	json_close_array

	json_close_array
}

_procd_add_raw_trigger() {
	json_add_array
	_procd_add_array_data "$1"
	shift
	local timeout=$1
	shift

	json_add_array
	json_add_array
	_procd_add_array_data "run_script" "$@"
	json_close_array
	json_close_array

	json_add_int "" "$timeout"

	json_close_array
}

_procd_add_reload_trigger() {
	local script=$(readlink "$initscript")
	local name=$(basename ${script:-$initscript})
	local file

	_procd_open_trigger
	for file in "$@"; do
		_procd_add_config_trigger "config.change" "$file" /etc/init.d/$name reload
	done
	_procd_close_trigger
}

_procd_add_validation() {
	_procd_open_validate
	$@
	_procd_close_validate
}

_procd_append_param() {
	local type="$1"; shift
	local _json_no_warning=1

	json_select "$type"
	[ $? = 0 ] || {
		_procd_set_param "$type" "$@"
		return
	}
	case "$type" in
		env|data|limits)
			_procd_add_table_data "$@"
		;;
		command|netdev|file|respawn|watch)
			_procd_add_array_data "$@"
		;;
		error)
			json_add_string "" "$@"
		;;
	esac
	json_select ..
}

_procd_close_instance() {
	json_close_object
}

_procd_close_trigger() {
	json_close_array
}

_procd_close_validate() {
	json_close_array
}

_procd_add_instance() {
	_procd_open_instance
	_procd_set_param command "$@"
	_procd_close_instance
}

_procd_kill() {
	local service="$1"
	local instance="$2"

	json_init
	[ -n "$service" ] && json_add_string name "$service"
	[ -n "$instance" ] && json_add_string instance "$instance"
	_procd_ubus_call delete
}

procd_open_data() {
	local name="$1"
	json_set_namespace procd __procd_old_cb
	json_add_object data
}

procd_close_data() {
	json_close_object
	json_set_namespace $__procd_old_cb
}

_procd_set_config_changed() {
	local package="$1"

	json_init
	json_add_string type config.change
	json_add_object data
	json_add_string package "$package"
	json_close_object

	ubus call service event "$(json_dump)"
}

procd_add_mdns_service() {
	local service proto port
	service=$1; shift
	proto=$1; shift
	port=$1; shift
	json_add_object "${service}_$port"
	json_add_string "service" "_$service._$proto.local"
	json_add_int port "$port"
	[ -n "$1" ] && {
		json_add_array txt
		for txt in $@; do json_add_string "" $txt; done
		json_select ..
	}
	json_select ..
}

procd_add_mdns() {
	procd_open_data
	json_add_object "mdns"
	procd_add_mdns_service $@
	json_close_object
	procd_close_data
}

uci_validate_section()
{
	local _package="$1"
	local _type="$2"
	local _name="$3"
	local _result
	local _error
	shift; shift; shift
	_result=`/sbin/validate_data "$_package" "$_type" "$_name" "$@" 2> /dev/null`
	_error=$?
	eval "$_result"
	[ "$_error" = "0" ] || `/sbin/validate_data "$_package" "$_type" "$_name" "$@" 1> /dev/null`
	return $_error
}

_procd_wrapper \
	procd_open_service \
	procd_close_service \
	procd_add_instance \
	procd_add_raw_trigger \
	procd_add_config_trigger \
	procd_add_interface_trigger \
	procd_add_reload_trigger \
	procd_add_reload_interface_trigger \
	procd_open_trigger \
	procd_close_trigger \
	procd_open_instance \
	procd_close_instance \
	procd_open_validate \
	procd_close_validate \
	procd_add_jail \
	procd_add_jail_mount \
	procd_add_jail_mount_rw \
	procd_set_param \
	procd_append_param \
	procd_add_validation \
	procd_set_config_changed \
	procd_kill