17c478bd9Sstevel@tonic-gate /*
29525b14bSRao Shoaib * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
37c478bd9Sstevel@tonic-gate * Copyright (c) 1996,1999 by Internet Software Consortium.
47c478bd9Sstevel@tonic-gate *
57c478bd9Sstevel@tonic-gate * Permission to use, copy, modify, and distribute this software for any
67c478bd9Sstevel@tonic-gate * purpose with or without fee is hereby granted, provided that the above
77c478bd9Sstevel@tonic-gate * copyright notice and this permission notice appear in all copies.
87c478bd9Sstevel@tonic-gate *
99525b14bSRao Shoaib * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
109525b14bSRao Shoaib * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
119525b14bSRao Shoaib * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
129525b14bSRao Shoaib * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
139525b14bSRao Shoaib * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
149525b14bSRao Shoaib * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
159525b14bSRao Shoaib * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
167c478bd9Sstevel@tonic-gate */
177c478bd9Sstevel@tonic-gate
187c478bd9Sstevel@tonic-gate /* Imports */
197c478bd9Sstevel@tonic-gate
207c478bd9Sstevel@tonic-gate #include "port_before.h"
217c478bd9Sstevel@tonic-gate
227c478bd9Sstevel@tonic-gate #include <sys/types.h>
237c478bd9Sstevel@tonic-gate #include <netinet/in.h>
247c478bd9Sstevel@tonic-gate #include <arpa/nameser.h>
257c478bd9Sstevel@tonic-gate #include <resolv.h>
267c478bd9Sstevel@tonic-gate
277c478bd9Sstevel@tonic-gate #include <errno.h>
287c478bd9Sstevel@tonic-gate #include <stdlib.h>
297c478bd9Sstevel@tonic-gate #include <string.h>
307c478bd9Sstevel@tonic-gate
317c478bd9Sstevel@tonic-gate #include <isc/memcluster.h>
327c478bd9Sstevel@tonic-gate #include <irs.h>
337c478bd9Sstevel@tonic-gate
347c478bd9Sstevel@tonic-gate #include "port_after.h"
357c478bd9Sstevel@tonic-gate
367c478bd9Sstevel@tonic-gate #include "irs_p.h"
377c478bd9Sstevel@tonic-gate #include "gen_p.h"
387c478bd9Sstevel@tonic-gate
397c478bd9Sstevel@tonic-gate /* Types */
407c478bd9Sstevel@tonic-gate
417c478bd9Sstevel@tonic-gate struct pvt {
427c478bd9Sstevel@tonic-gate struct irs_rule * rules;
437c478bd9Sstevel@tonic-gate struct irs_rule * rule;
447c478bd9Sstevel@tonic-gate struct __res_state * res;
457c478bd9Sstevel@tonic-gate void (*free_res)(void *);
467c478bd9Sstevel@tonic-gate };
477c478bd9Sstevel@tonic-gate
487c478bd9Sstevel@tonic-gate /* Forward */
497c478bd9Sstevel@tonic-gate
507c478bd9Sstevel@tonic-gate static void sv_close(struct irs_sv*);
517c478bd9Sstevel@tonic-gate static struct servent * sv_next(struct irs_sv *);
527c478bd9Sstevel@tonic-gate static struct servent * sv_byname(struct irs_sv *, const char *,
537c478bd9Sstevel@tonic-gate const char *);
547c478bd9Sstevel@tonic-gate static struct servent * sv_byport(struct irs_sv *, int, const char *);
557c478bd9Sstevel@tonic-gate static void sv_rewind(struct irs_sv *);
567c478bd9Sstevel@tonic-gate static void sv_minimize(struct irs_sv *);
577c478bd9Sstevel@tonic-gate static struct __res_state * sv_res_get(struct irs_sv *);
587c478bd9Sstevel@tonic-gate static void sv_res_set(struct irs_sv *,
597c478bd9Sstevel@tonic-gate struct __res_state *,
607c478bd9Sstevel@tonic-gate void (*)(void *));
617c478bd9Sstevel@tonic-gate
627c478bd9Sstevel@tonic-gate /* Public */
637c478bd9Sstevel@tonic-gate
647c478bd9Sstevel@tonic-gate struct irs_sv *
irs_gen_sv(struct irs_acc * this)657c478bd9Sstevel@tonic-gate irs_gen_sv(struct irs_acc *this) {
667c478bd9Sstevel@tonic-gate struct gen_p *accpvt = (struct gen_p *)this->private;
677c478bd9Sstevel@tonic-gate struct irs_sv *sv;
687c478bd9Sstevel@tonic-gate struct pvt *pvt;
697c478bd9Sstevel@tonic-gate
707c478bd9Sstevel@tonic-gate if (!(sv = memget(sizeof *sv))) {
717c478bd9Sstevel@tonic-gate errno = ENOMEM;
727c478bd9Sstevel@tonic-gate return (NULL);
737c478bd9Sstevel@tonic-gate }
747c478bd9Sstevel@tonic-gate memset(sv, 0x5e, sizeof *sv);
757c478bd9Sstevel@tonic-gate if (!(pvt = memget(sizeof *pvt))) {
767c478bd9Sstevel@tonic-gate memput(sv, sizeof *sv);
777c478bd9Sstevel@tonic-gate errno = ENOMEM;
787c478bd9Sstevel@tonic-gate return (NULL);
797c478bd9Sstevel@tonic-gate }
807c478bd9Sstevel@tonic-gate memset(pvt, 0, sizeof *pvt);
817c478bd9Sstevel@tonic-gate pvt->rules = accpvt->map_rules[irs_sv];
827c478bd9Sstevel@tonic-gate pvt->rule = pvt->rules;
837c478bd9Sstevel@tonic-gate sv->private = pvt;
847c478bd9Sstevel@tonic-gate sv->close = sv_close;
857c478bd9Sstevel@tonic-gate sv->next = sv_next;
867c478bd9Sstevel@tonic-gate sv->byname = sv_byname;
877c478bd9Sstevel@tonic-gate sv->byport = sv_byport;
887c478bd9Sstevel@tonic-gate sv->rewind = sv_rewind;
897c478bd9Sstevel@tonic-gate sv->minimize = sv_minimize;
907c478bd9Sstevel@tonic-gate sv->res_get = sv_res_get;
917c478bd9Sstevel@tonic-gate sv->res_set = sv_res_set;
927c478bd9Sstevel@tonic-gate return (sv);
937c478bd9Sstevel@tonic-gate }
947c478bd9Sstevel@tonic-gate
957c478bd9Sstevel@tonic-gate /* Methods */
967c478bd9Sstevel@tonic-gate
977c478bd9Sstevel@tonic-gate static void
sv_close(struct irs_sv * this)987c478bd9Sstevel@tonic-gate sv_close(struct irs_sv *this) {
997c478bd9Sstevel@tonic-gate struct pvt *pvt = (struct pvt *)this->private;
100*55fea89dSDan Cross
1017c478bd9Sstevel@tonic-gate memput(pvt, sizeof *pvt);
1027c478bd9Sstevel@tonic-gate memput(this, sizeof *this);
1037c478bd9Sstevel@tonic-gate }
1047c478bd9Sstevel@tonic-gate
1057c478bd9Sstevel@tonic-gate static struct servent *
sv_next(struct irs_sv * this)1067c478bd9Sstevel@tonic-gate sv_next(struct irs_sv *this) {
1077c478bd9Sstevel@tonic-gate struct pvt *pvt = (struct pvt *)this->private;
1087c478bd9Sstevel@tonic-gate struct servent *rval;
1097c478bd9Sstevel@tonic-gate struct irs_sv *sv;
110*55fea89dSDan Cross
1117c478bd9Sstevel@tonic-gate while (pvt->rule) {
1127c478bd9Sstevel@tonic-gate sv = pvt->rule->inst->sv;
1137c478bd9Sstevel@tonic-gate rval = (*sv->next)(sv);
1147c478bd9Sstevel@tonic-gate if (rval)
1157c478bd9Sstevel@tonic-gate return (rval);
1167c478bd9Sstevel@tonic-gate if (!(pvt->rule->flags & IRS_CONTINUE))
1177c478bd9Sstevel@tonic-gate break;
1187c478bd9Sstevel@tonic-gate pvt->rule = pvt->rule->next;
1197c478bd9Sstevel@tonic-gate if (pvt->rule) {
1207c478bd9Sstevel@tonic-gate sv = pvt->rule->inst->sv;
1217c478bd9Sstevel@tonic-gate (*sv->rewind)(sv);
1227c478bd9Sstevel@tonic-gate }
1237c478bd9Sstevel@tonic-gate }
1247c478bd9Sstevel@tonic-gate return (NULL);
1257c478bd9Sstevel@tonic-gate }
1267c478bd9Sstevel@tonic-gate
1277c478bd9Sstevel@tonic-gate static struct servent *
sv_byname(struct irs_sv * this,const char * name,const char * proto)1287c478bd9Sstevel@tonic-gate sv_byname(struct irs_sv *this, const char *name, const char *proto) {
1297c478bd9Sstevel@tonic-gate struct pvt *pvt = (struct pvt *)this->private;
1307c478bd9Sstevel@tonic-gate struct irs_rule *rule;
1317c478bd9Sstevel@tonic-gate struct servent *rval;
1327c478bd9Sstevel@tonic-gate struct irs_sv *sv;
133*55fea89dSDan Cross
1347c478bd9Sstevel@tonic-gate rval = NULL;
1357c478bd9Sstevel@tonic-gate for (rule = pvt->rules; rule; rule = rule->next) {
1367c478bd9Sstevel@tonic-gate sv = rule->inst->sv;
1377c478bd9Sstevel@tonic-gate rval = (*sv->byname)(sv, name, proto);
1387c478bd9Sstevel@tonic-gate if (rval || !(rule->flags & IRS_CONTINUE))
1397c478bd9Sstevel@tonic-gate break;
1407c478bd9Sstevel@tonic-gate }
1417c478bd9Sstevel@tonic-gate return (rval);
1427c478bd9Sstevel@tonic-gate }
1437c478bd9Sstevel@tonic-gate
1447c478bd9Sstevel@tonic-gate static struct servent *
sv_byport(struct irs_sv * this,int port,const char * proto)1457c478bd9Sstevel@tonic-gate sv_byport(struct irs_sv *this, int port, const char *proto) {
1467c478bd9Sstevel@tonic-gate struct pvt *pvt = (struct pvt *)this->private;
1477c478bd9Sstevel@tonic-gate struct irs_rule *rule;
1487c478bd9Sstevel@tonic-gate struct servent *rval;
1497c478bd9Sstevel@tonic-gate struct irs_sv *sv;
150*55fea89dSDan Cross
1517c478bd9Sstevel@tonic-gate rval = NULL;
1527c478bd9Sstevel@tonic-gate for (rule = pvt->rules; rule; rule = rule->next) {
1537c478bd9Sstevel@tonic-gate sv = rule->inst->sv;
1547c478bd9Sstevel@tonic-gate rval = (*sv->byport)(sv, port, proto);
1557c478bd9Sstevel@tonic-gate if (rval || !(rule->flags & IRS_CONTINUE))
1567c478bd9Sstevel@tonic-gate break;
1577c478bd9Sstevel@tonic-gate }
1587c478bd9Sstevel@tonic-gate return (rval);
1597c478bd9Sstevel@tonic-gate }
1607c478bd9Sstevel@tonic-gate
1617c478bd9Sstevel@tonic-gate static void
sv_rewind(struct irs_sv * this)1627c478bd9Sstevel@tonic-gate sv_rewind(struct irs_sv *this) {
1637c478bd9Sstevel@tonic-gate struct pvt *pvt = (struct pvt *)this->private;
1647c478bd9Sstevel@tonic-gate struct irs_sv *sv;
1657c478bd9Sstevel@tonic-gate
1667c478bd9Sstevel@tonic-gate pvt->rule = pvt->rules;
1677c478bd9Sstevel@tonic-gate if (pvt->rule) {
1687c478bd9Sstevel@tonic-gate sv = pvt->rule->inst->sv;
1697c478bd9Sstevel@tonic-gate (*sv->rewind)(sv);
1707c478bd9Sstevel@tonic-gate }
1717c478bd9Sstevel@tonic-gate }
1727c478bd9Sstevel@tonic-gate
1737c478bd9Sstevel@tonic-gate static void
sv_minimize(struct irs_sv * this)1747c478bd9Sstevel@tonic-gate sv_minimize(struct irs_sv *this) {
1757c478bd9Sstevel@tonic-gate struct pvt *pvt = (struct pvt *)this->private;
1767c478bd9Sstevel@tonic-gate struct irs_rule *rule;
1777c478bd9Sstevel@tonic-gate
1787c478bd9Sstevel@tonic-gate for (rule = pvt->rules; rule != NULL; rule = rule->next) {
1797c478bd9Sstevel@tonic-gate struct irs_sv *sv = rule->inst->sv;
1807c478bd9Sstevel@tonic-gate
1817c478bd9Sstevel@tonic-gate (*sv->minimize)(sv);
1827c478bd9Sstevel@tonic-gate }
1837c478bd9Sstevel@tonic-gate }
1847c478bd9Sstevel@tonic-gate
1857c478bd9Sstevel@tonic-gate static struct __res_state *
sv_res_get(struct irs_sv * this)1867c478bd9Sstevel@tonic-gate sv_res_get(struct irs_sv *this) {
1877c478bd9Sstevel@tonic-gate struct pvt *pvt = (struct pvt *)this->private;
1887c478bd9Sstevel@tonic-gate
1897c478bd9Sstevel@tonic-gate if (!pvt->res) {
1907c478bd9Sstevel@tonic-gate struct __res_state *res;
1917c478bd9Sstevel@tonic-gate res = (struct __res_state *)malloc(sizeof *res);
1927c478bd9Sstevel@tonic-gate if (!res) {
1937c478bd9Sstevel@tonic-gate errno = ENOMEM;
1947c478bd9Sstevel@tonic-gate return (NULL);
1957c478bd9Sstevel@tonic-gate }
1967c478bd9Sstevel@tonic-gate memset(res, 0, sizeof *res);
1977c478bd9Sstevel@tonic-gate sv_res_set(this, res, free);
1987c478bd9Sstevel@tonic-gate }
1997c478bd9Sstevel@tonic-gate
2007c478bd9Sstevel@tonic-gate return (pvt->res);
2017c478bd9Sstevel@tonic-gate }
2027c478bd9Sstevel@tonic-gate
2037c478bd9Sstevel@tonic-gate static void
sv_res_set(struct irs_sv * this,struct __res_state * res,void (* free_res)(void *))2047c478bd9Sstevel@tonic-gate sv_res_set(struct irs_sv *this, struct __res_state *res,
2057c478bd9Sstevel@tonic-gate void (*free_res)(void *)) {
2067c478bd9Sstevel@tonic-gate struct pvt *pvt = (struct pvt *)this->private;
2077c478bd9Sstevel@tonic-gate struct irs_rule *rule;
2087c478bd9Sstevel@tonic-gate
2097c478bd9Sstevel@tonic-gate if (pvt->res && pvt->free_res) {
2107c478bd9Sstevel@tonic-gate res_nclose(pvt->res);
2117c478bd9Sstevel@tonic-gate (*pvt->free_res)(pvt->res);
2127c478bd9Sstevel@tonic-gate }
2137c478bd9Sstevel@tonic-gate
2147c478bd9Sstevel@tonic-gate pvt->res = res;
2157c478bd9Sstevel@tonic-gate pvt->free_res = free_res;
2167c478bd9Sstevel@tonic-gate
2177c478bd9Sstevel@tonic-gate for (rule = pvt->rules; rule != NULL; rule = rule->next) {
2187c478bd9Sstevel@tonic-gate struct irs_sv *sv = rule->inst->sv;
2197c478bd9Sstevel@tonic-gate
2207c478bd9Sstevel@tonic-gate if (sv->res_set)
2217c478bd9Sstevel@tonic-gate (*sv->res_set)(sv, pvt->res, NULL);
2227c478bd9Sstevel@tonic-gate }
2237c478bd9Sstevel@tonic-gate }
2249525b14bSRao Shoaib
2259525b14bSRao Shoaib /*! \file */
226