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freebsd/usr.sbin/apmd/apmdparse.y
Nick Sayer 719b9dc1af Add battery state monitoring to apmd.
The new syntax available in the config file is:

apm_battery [0-9]+(%|[Mm) (dis|)charging { ... }

The stuff in the braces is the same as the existing case. nn% checks for
a certain percentage of life remaining and nnM checks for a cerain
number of minutes remaining. Specifying "discharge" means that you're
interested in knowing when the battery reaches a certain level while AC
power is off, "charging" the opposite.

The man page needs to be updated.

The code can be fooled. If you SIGHUP the daemon and the battery level
matches a rule it will be performed once per SIGHUP. If the battery
level matches a rule and you repeatedly apply and take away AC power,
the rule will be run once per occurance. This, however, is a feature.
:-) The code also only runs when select() times out, so getting APM
events more often than the timeout interval will result in the rules not
being run. These are things that remain to be overcome.
2001-05-15 05:13:45 +00:00

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%{
/*-
* APM (Advanced Power Management) Event Dispatcher
*
* Copyright (c) 1999 Mitsuru IWASAKI <iwasaki@FreeBSD.org>
* Copyright (c) 1999 KOIE Hidetaka <koie@suri.co.jp>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#include <stdio.h>
#include <bitstring.h>
#include <stdlib.h>
#include "apmd.h"
#ifdef DEBUG
#define YYDEBUG 1
#endif
extern int first_time;
%}
%union {
char *str;
bitstr_t bit_decl(evlist, EVENT_MAX);
int ev;
struct event_cmd * evcmd;
int i;
}
%token BEGINBLOCK ENDBLOCK
%token COMMA SEMICOLON
%token APMEVENT
%token APMBATT
%token BATTCHARGE BATTDISCHARGE
%token <str> BATTTIME BATTPERCENT
%token EXECCMD REJECTCMD
%token <ev> EVENT
%token <str> STRING UNKNOWN
%type <i> apm_battery_level
%type <i> apm_battery_direction
%type <str> string
%type <str> unknown
%type <evlist> event_list
%type <evcmd> cmd_list
%type <evcmd> cmd
%type <evcmd> exec_cmd reject_cmd
%%
config_file
: { first_time = 1; } config_list
;
config_list
: config
| config_list config
;
config
: apm_event_statement
| apm_battery_statement
;
apm_event_statement
: APMEVENT event_list BEGINBLOCK cmd_list ENDBLOCK
{
if (register_apm_event_handlers($2, $4) < 0)
abort(); /* XXX */
free_event_cmd_list($4);
}
;
apm_battery_level
: BATTPERCENT
{
$$ = $1;
}
| BATTTIME
{
$$ = $1;
}
;
apm_battery_direction
: BATTCHARGE
{
$$ = 1;
}
| BATTDISCHARGE
{
$$ = -1;
}
;
apm_battery_statement
: APMBATT apm_battery_level apm_battery_direction
BEGINBLOCK cmd_list ENDBLOCK
{
if (register_battery_handlers($2, $3, $5) < 0)
abort(); /* XXX */
free_event_cmd_list($5);
}
;
event_list
: EVENT
{
bit_nclear($$, 0, EVENT_MAX - 1);
bit_set($$, $1);
}
| event_list COMMA EVENT
{
memcpy(&($$), &($1), bitstr_size(EVENT_MAX));
bit_set($$, $3);
}
;
cmd_list
: /* empty */
{
$$ = NULL;
}
| cmd_list cmd
{
struct event_cmd * p = $1;
if (p) {
while (p->next != NULL)
p = p->next;
p->next = $2;
$$ = $1;
} else {
$$ = $2;
}
}
;
cmd
: exec_cmd SEMICOLON { $$ = $1; }
| reject_cmd SEMICOLON { $$ = $1; }
;
exec_cmd
: EXECCMD string
{
size_t len = sizeof (struct event_cmd_exec);
struct event_cmd_exec *cmd = malloc(len);
cmd->evcmd.next = NULL;
cmd->evcmd.len = len;
cmd->evcmd.name = "exec";
cmd->evcmd.op = &event_cmd_exec_ops;
cmd->line = $2;
$$ = (struct event_cmd *) cmd;
}
;
reject_cmd
: REJECTCMD
{
size_t len = sizeof (struct event_cmd_reject);
struct event_cmd_reject *cmd = malloc(len);
cmd->evcmd.next = NULL;
cmd->evcmd.len = len;
cmd->evcmd.name = "reject";
cmd->evcmd.op = &event_cmd_reject_ops;
$$ = (struct event_cmd *) cmd;
}
;
string
: STRING { $$ = $1; }
;
unknown
: UNKNOWN
{
$$ = $1;
}
;
%%