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/*
* Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
* Copyright (c) 1996,1999 by Internet Software Consortium.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
* OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#if !defined(LINT) && !defined(CODECENTER)
static const char rcsid[] = "$Id: gen_ng.c,v 1.3 2005/04/27 04:56:23 sra Exp $";
#endif
/* Imports */
#include "port_before.h"
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/nameser.h>
#include <resolv.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <isc/memcluster.h>
#include <irs.h>
#include "port_after.h"
#include "irs_p.h"
#include "gen_p.h"
/* Types */
struct pvt {
struct irs_rule * rules;
struct irs_rule * rule;
char * curgroup;
};
/* Forward */
static void ng_close(struct irs_ng *);
static int ng_next(struct irs_ng *, const char **,
const char **, const char **);
static int ng_test(struct irs_ng *, const char *,
const char *, const char *,
const char *);
static void ng_rewind(struct irs_ng *, const char *);
static void ng_minimize(struct irs_ng *);
/* Public */
struct irs_ng *
irs_gen_ng(struct irs_acc *this) {
struct gen_p *accpvt = (struct gen_p *)this->private;
struct irs_ng *ng;
struct pvt *pvt;
if (!(ng = memget(sizeof *ng))) {
errno = ENOMEM;
return (NULL);
}
memset(ng, 0x5e, sizeof *ng);
if (!(pvt = memget(sizeof *pvt))) {
memput(ng, sizeof *ng);
errno = ENOMEM;
return (NULL);
}
memset(pvt, 0, sizeof *pvt);
pvt->rules = accpvt->map_rules[irs_ng];
pvt->rule = pvt->rules;
ng->private = pvt;
ng->close = ng_close;
ng->next = ng_next;
ng->test = ng_test;
ng->rewind = ng_rewind;
ng->minimize = ng_minimize;
return (ng);
}
/* Methods */
static void
ng_close(struct irs_ng *this) {
struct pvt *pvt = (struct pvt *)this->private;
ng_minimize(this);
if (pvt->curgroup)
free(pvt->curgroup);
memput(pvt, sizeof *pvt);
memput(this, sizeof *this);
}
static int
ng_next(struct irs_ng *this, const char **host, const char **user,
const char **domain)
{
struct pvt *pvt = (struct pvt *)this->private;
struct irs_ng *ng;
while (pvt->rule) {
ng = pvt->rule->inst->ng;
if ((*ng->next)(ng, host, user, domain) == 1)
return (1);
if (!(pvt->rule->flags & IRS_CONTINUE))
break;
pvt->rule = pvt->rule->next;
if (pvt->rule) {
ng = pvt->rule->inst->ng;
(*ng->rewind)(ng, pvt->curgroup);
}
}
return (0);
}
static int
ng_test(struct irs_ng *this, const char *name,
const char *user, const char *host, const char *domain)
{
struct pvt *pvt = (struct pvt *)this->private;
struct irs_rule *rule;
struct irs_ng *ng;
int rval;
rval = 0;
for (rule = pvt->rules; rule; rule = rule->next) {
ng = rule->inst->ng;
rval = (*ng->test)(ng, name, user, host, domain);
if (rval || !(rule->flags & IRS_CONTINUE))
break;
}
return (rval);
}
static void
ng_rewind(struct irs_ng *this, const char *group) {
struct pvt *pvt = (struct pvt *)this->private;
struct irs_ng *ng;
pvt->rule = pvt->rules;
if (pvt->rule) {
if (pvt->curgroup)
free(pvt->curgroup);
pvt->curgroup = strdup(group);
ng = pvt->rule->inst->ng;
(*ng->rewind)(ng, pvt->curgroup);
}
}
static void
ng_minimize(struct irs_ng *this) {
struct pvt *pvt = (struct pvt *)this->private;
struct irs_rule *rule;
for (rule = pvt->rules; rule != NULL; rule = rule->next) {
struct irs_ng *ng = rule->inst->ng;
(*ng->minimize)(ng);
}
}
/*! \file */
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