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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_pw.c,v 1.1.206.1 2004/03/09 08:33:35 marka Exp $";
#endif
/* Imports */
#include "port_before.h"
#ifndef WANT_IRS_PW
static int __bind_irs_pw_unneeded;
#else
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/nameser.h>
#include <resolv.h>
#include <errno.h>
#include <pwd.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;
struct __res_state * res;
void (*free_res)(void *);
};
/* Forward */
static void pw_close(struct irs_pw *);
static struct passwd * pw_next(struct irs_pw *);
static struct passwd * pw_byname(struct irs_pw *, const char *);
static struct passwd * pw_byuid(struct irs_pw *, uid_t);
static void pw_rewind(struct irs_pw *);
static void pw_minimize(struct irs_pw *);
static struct __res_state * pw_res_get(struct irs_pw *);
static void pw_res_set(struct irs_pw *,
struct __res_state *,
void (*)(void *));
/* Public */
struct irs_pw *
irs_gen_pw(struct irs_acc *this) {
struct gen_p *accpvt = (struct gen_p *)this->private;
struct irs_pw *pw;
struct pvt *pvt;
if (!(pw = memget(sizeof *pw))) {
errno = ENOMEM;
return (NULL);
}
memset(pw, 0x5e, sizeof *pw);
if (!(pvt = memget(sizeof *pvt))) {
memput(pw, sizeof *pvt);
errno = ENOMEM;
return (NULL);
}
memset(pvt, 0, sizeof *pvt);
pvt->rules = accpvt->map_rules[irs_pw];
pvt->rule = pvt->rules;
pw->private = pvt;
pw->close = pw_close;
pw->next = pw_next;
pw->byname = pw_byname;
pw->byuid = pw_byuid;
pw->rewind = pw_rewind;
pw->minimize = pw_minimize;
pw->res_get = pw_res_get;
pw->res_set = pw_res_set;
return (pw);
}
/* Methods */
static void
pw_close(struct irs_pw *this) {
struct pvt *pvt = (struct pvt *)this->private;
memput(pvt, sizeof *pvt);
memput(this, sizeof *this);
}
static struct passwd *
pw_next(struct irs_pw *this) {
struct pvt *pvt = (struct pvt *)this->private;
struct passwd *rval;
struct irs_pw *pw;
while (pvt->rule) {
pw = pvt->rule->inst->pw;
rval = (*pw->next)(pw);
if (rval)
return (rval);
if (!(pvt->rule->flags & IRS_CONTINUE))
break;
pvt->rule = pvt->rule->next;
if (pvt->rule) {
pw = pvt->rule->inst->pw;
(*pw->rewind)(pw);
}
}
return (NULL);
}
static void
pw_rewind(struct irs_pw *this) {
struct pvt *pvt = (struct pvt *)this->private;
struct irs_pw *pw;
pvt->rule = pvt->rules;
if (pvt->rule) {
pw = pvt->rule->inst->pw;
(*pw->rewind)(pw);
}
}
static struct passwd *
pw_byname(struct irs_pw *this, const char *name) {
struct pvt *pvt = (struct pvt *)this->private;
struct irs_rule *rule;
struct passwd *rval;
struct irs_pw *pw;
rval = NULL;
for (rule = pvt->rules; rule; rule = rule->next) {
pw = rule->inst->pw;
rval = (*pw->byname)(pw, name);
if (rval || !(rule->flags & IRS_CONTINUE))
break;
}
return (rval);
}
static struct passwd *
pw_byuid(struct irs_pw *this, uid_t uid) {
struct pvt *pvt = (struct pvt *)this->private;
struct irs_rule *rule;
struct passwd *rval;
struct irs_pw *pw;
rval = NULL;
for (rule = pvt->rules; rule; rule = rule->next) {
pw = rule->inst->pw;
rval = (*pw->byuid)(pw, uid);
if (rval || !(rule->flags & IRS_CONTINUE))
break;
}
return (rval);
}
static void
pw_minimize(struct irs_pw *this) {
struct pvt *pvt = (struct pvt *)this->private;
struct irs_rule *rule;
for (rule = pvt->rules; rule != NULL; rule = rule->next) {
struct irs_pw *pw = rule->inst->pw;
(*pw->minimize)(pw);
}
}
static struct __res_state *
pw_res_get(struct irs_pw *this) {
struct pvt *pvt = (struct pvt *)this->private;
if (!pvt->res) {
struct __res_state *res;
res = (struct __res_state *)malloc(sizeof *res);
if (!res) {
errno = ENOMEM;
return (NULL);
}
memset(res, 0, sizeof *res);
pw_res_set(this, res, free);
}
return (pvt->res);
}
static void
pw_res_set(struct irs_pw *this, struct __res_state *res,
void (*free_res)(void *)) {
struct pvt *pvt = (struct pvt *)this->private;
struct irs_rule *rule;
if (pvt->res && pvt->free_res) {
res_nclose(pvt->res);
(*pvt->free_res)(pvt->res);
}
pvt->res = res;
pvt->free_res = free_res;
for (rule = pvt->rules; rule != NULL; rule = rule->next) {
struct irs_pw *pw = rule->inst->pw;
if (pw->res_set)
(*pw->res_set)(pw, pvt->res, NULL);
}
}
#endif /* WANT_IRS_PW */
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