openwrtv4/package/system/procd/files/procd.sh
John Crispin 50db95e2f0 procd: options with default values are not parsed properly in the ubus register code
Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 38788
2013-11-13 10:57:16 +00:00

289 lines
5.2 KiB
Bash

# 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)
#
# 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="$1"
ubus call service "$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 [ -n "$1" ]; 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"
}
_procd_open_trigger() {
json_add_array "triggers"
}
_procd_open_validate() {
json_add_array "validate"
}
_procd_set_param() {
local type="$1"; shift
case "$type" in
env|data)
_procd_add_table "$type" "$@"
;;
command|netdev|file|respawn)
_procd_add_array "$type" "$@"
;;
nice)
json_add_int "$type" "$1"
;;
esac
}
_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_reload_trigger() {
local script=$(readlink "$initscript")
local name=$(basename ${script:-$initscript})
_procd_open_trigger
_procd_add_config_trigger "config.change" $1 /etc/init.d/$name reload
_procd_close_trigger
}
_procd_add_validation() {
_procd_open_validate
$@
_procd_close_validate
}
_procd_append_param() {
local type="$1"; shift
json_select "$type"
case "$type" in
env|data)
_procd_add_table_data "$@"
;;
command|netdev|file|respawn)
_procd_add_array_data "$@"
;;
esac
json_select ..
}
_procd_close_instance() {
json_close_object
}
_procd_close_trigger() {
json_close_array
}
_procd_close_validate() {
json_close_array
}
_procd_add_instance() {
_procd_open_instance
_procd_set_param command "$@"
_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
}
uci_validate_section()
{
local error=0
[ "$4" = "" ] && return 1
[ "$3" = "" ] && {
json_add_object
json_add_string "package" "$1"
json_add_string "type" "$2"
json_add_object "data"
shift; shift; shift
while [ -n "$1" ]; do
local tmp=${1#*:}
json_add_string "${1%%:*}" "${tmp%%:*}"
shift
done
json_close_object
json_close_object
return 0
}
local section="${3}"
config_load "${1}"
shift; shift; shift
while [ -n "$1" ]; do
local name=${1%%:*}
local tmp=${1#*:}
local type=${tmp%%:*}
local default=""
[ "$tmp" = "$type" ] || default=${tmp#*:}
shift
config_get "${name}" "${section}" "${name}"
eval val=\$$name
[ "$type" = "bool" ] && {
case "$val" in
1|on|true|enabled) val=1;;
0|off|false|disabled) val=0;;
*) val="";;
esac
}
[ -z "$val" ] && val=${default}
eval $name=\"$val\"
[ -z "$val" ] || {
/sbin/validate_data "${type}" "${val}"
[ $? -eq 0 ] || error="$((error + 1))"
}
done
return $error
}
_procd_wrapper \
procd_open_service \
procd_close_service \
procd_add_instance \
procd_add_config_trigger \
procd_add_reload_trigger \
procd_open_trigger \
procd_close_trigger \
procd_open_instance \
procd_close_instance \
procd_set_param \
procd_append_param \
procd_add_validation \
procd_kill