164 lines
3.8 KiB
C
164 lines
3.8 KiB
C
/*
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* Copyright (c) 1996 by Internet Software Consortium.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
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* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
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* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* SOFTWARE.
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*/
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#if !defined(LINT) && !defined(CODECENTER)
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static char rcsid[] = "$Id: gen_ng.c,v 1.9 1997/12/04 04:57:50 halley Exp $";
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#endif
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/* Imports */
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#include "port_before.h"
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#include <sys/types.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include <irs.h>
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#include "port_after.h"
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#include "irs_p.h"
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#include "gen_p.h"
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/* Types */
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struct pvt {
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struct irs_rule * rules;
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struct irs_rule * rule;
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char * curgroup;
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};
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/* Forward */
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static void ng_close(struct irs_ng *);
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static int ng_next(struct irs_ng *, char **, char **, char **);
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static int ng_test(struct irs_ng *, const char *,
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const char *, const char *,
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const char *);
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static void ng_rewind(struct irs_ng *, const char *);
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static void ng_minimize(struct irs_ng *);
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/* Public */
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struct irs_ng *
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irs_gen_ng(struct irs_acc *this) {
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struct gen_p *accpvt = (struct gen_p *)this->private;
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struct irs_ng *ng;
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struct pvt *pvt;
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if (!(ng = malloc(sizeof *ng))) {
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errno = ENOMEM;
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return (NULL);
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}
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memset(ng, 0x5e, sizeof *ng);
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if (!(pvt = malloc(sizeof *pvt))) {
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free(ng);
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errno = ENOMEM;
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return (NULL);
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}
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memset(pvt, 0, sizeof *pvt);
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pvt->rules = accpvt->map_rules[irs_ng];
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pvt->rule = pvt->rules;
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ng->private = pvt;
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ng->close = ng_close;
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ng->next = ng_next;
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ng->test = ng_test;
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ng->rewind = ng_rewind;
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ng->minimize = ng_minimize;
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return (ng);
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}
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/* Methods */
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static void
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ng_close(struct irs_ng *this) {
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struct pvt *pvt = (struct pvt *)this->private;
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if (pvt->curgroup)
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free(pvt->curgroup);
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free(pvt);
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free(this);
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}
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static int
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ng_next(struct irs_ng *this, char **host, char **user, char **domain) {
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struct pvt *pvt = (struct pvt *)this->private;
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struct irs_ng *ng;
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while (pvt->rule) {
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ng = pvt->rule->inst->ng;
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if ((*ng->next)(ng, host, user, domain) == 1)
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return (1);
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if (!(pvt->rule->flags & IRS_CONTINUE))
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break;
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pvt->rule = pvt->rule->next;
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if (pvt->rule) {
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ng = pvt->rule->inst->ng;
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(*ng->rewind)(ng, pvt->curgroup);
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}
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}
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return (0);
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}
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static int
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ng_test(struct irs_ng *this, const char *name,
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const char *user, const char *host, const char *domain)
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{
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struct pvt *pvt = (struct pvt *)this->private;
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struct irs_rule *rule;
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struct irs_ng *ng;
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int rval;
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rval = 0;
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for (rule = pvt->rules; rule; rule = rule->next) {
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ng = rule->inst->ng;
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rval = (*ng->test)(ng, name, user, host, domain);
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if (rval || !(rule->flags & IRS_CONTINUE))
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break;
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}
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return (rval);
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}
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static void
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ng_rewind(struct irs_ng *this, const char *group) {
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struct pvt *pvt = (struct pvt *)this->private;
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struct irs_ng *ng;
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pvt->rule = pvt->rules;
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if (pvt->rule) {
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if (pvt->curgroup)
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free(pvt->curgroup);
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pvt->curgroup = strdup(group);
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ng = pvt->rule->inst->ng;
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(*ng->rewind)(ng, pvt->curgroup);
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}
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}
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static void
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ng_minimize(struct irs_ng *this) {
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struct pvt *pvt = (struct pvt *)this->private;
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struct irs_rule *rule;
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for (rule = pvt->rules; rule != NULL; rule = rule->next) {
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struct irs_ng *ng = rule->inst->ng;
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(*ng->minimize)(ng);
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}
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}
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