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|
%{
/*-
* Copyright (c) 2011 James Gritton
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <stdlib.h>
#include <string.h>
#include "jailp.h"
#ifdef DEBUG
#define YYDEBUG 1
#endif
%}
%union {
struct cfjail *j;
struct cfparams *pp;
struct cfparam *p;
struct cfstrings *ss;
struct cfstring *s;
char *cs;
}
%token PLEQ
%token <cs> STR STR1 VAR VAR1
%type <j> jail
%type <pp> param_l
%type <p> param name
%type <ss> value
%type <s> string
%%
/*
* A config file is a series of jails (containing parameters) and jail-less
* parameters which really belong to a global pseudo-jail.
*/
conf :
;
| conf jail
;
| conf param ';'
{
struct cfjail *j;
j = TAILQ_LAST(&cfjails, cfjails);
if (!j || strcmp(j->name, "*")) {
j = add_jail();
j->name = estrdup("*");
}
TAILQ_INSERT_TAIL(&j->params, $2, tq);
}
| conf ';'
jail : STR '{' param_l '}'
{
$$ = add_jail();
$$->name = $1;
TAILQ_CONCAT(&$$->params, $3, tq);
free($3);
}
;
param_l :
{
$$ = emalloc(sizeof(struct cfparams));
TAILQ_INIT($$);
}
| param_l param ';'
{
$$ = $1;
TAILQ_INSERT_TAIL($$, $2, tq);
}
| param_l ';'
;
/*
* Parameters have a name and an optional list of value strings,
* which may have "+=" or "=" preceding them.
*/
param : name
{
$$ = $1;
}
| name '=' value
{
$$ = $1;
TAILQ_CONCAT(&$$->val, $3, tq);
free($3);
}
| name PLEQ value
{
$$ = $1;
TAILQ_CONCAT(&$$->val, $3, tq);
$$->flags |= PF_APPEND;
free($3);
}
| name value
{
$$ = $1;
TAILQ_CONCAT(&$$->val, $2, tq);
free($2);
}
| error
{
}
;
/*
* A parameter has a fixed name. A variable definition looks just like a
* parameter except that the name is a variable.
*/
name : STR
{
$$ = emalloc(sizeof(struct cfparam));
$$->name = $1;
TAILQ_INIT(&$$->val);
$$->flags = 0;
}
| VAR
{
$$ = emalloc(sizeof(struct cfparam));
$$->name = $1;
TAILQ_INIT(&$$->val);
$$->flags = PF_VAR;
}
;
value : string
{
$$ = emalloc(sizeof(struct cfstrings));
TAILQ_INIT($$);
TAILQ_INSERT_TAIL($$, $1, tq);
}
| value ',' string
{
$$ = $1;
TAILQ_INSERT_TAIL($$, $3, tq);
}
;
/*
* Strings may be passed in pieces, because of quoting and/or variable
* interpolation. Reassemble them into a single string.
*/
string : STR
{
$$ = emalloc(sizeof(struct cfstring));
$$->s = $1;
$$->len = strlen($1);
STAILQ_INIT(&$$->vars);
}
| VAR
{
struct cfvar *v;
$$ = emalloc(sizeof(struct cfstring));
$$->s = estrdup("");
$$->len = 0;
STAILQ_INIT(&$$->vars);
v = emalloc(sizeof(struct cfvar));
v->name = $1;
v->pos = 0;
STAILQ_INSERT_TAIL(&$$->vars, v, tq);
}
| string STR1
{
size_t len1;
$$ = $1;
len1 = strlen($2);
$$->s = erealloc($$->s, $$->len + len1 + 1);
strcpy($$->s + $$->len, $2);
free($2);
$$->len += len1;
}
| string VAR1
{
struct cfvar *v;
$$ = $1;
v = emalloc(sizeof(struct cfvar));
v->name = $2;
v->pos = $$->len;
STAILQ_INSERT_TAIL(&$$->vars, v, tq);
}
;
%%
|
