/* $NetBSD: gen_pw.c,v 1.1.1.1 1999/11/20 18:54:08 veego Exp $ */ /* * 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 INTERNET SOFTWARE CONSORTIUM DISCLAIMS * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE * CONSORTIUM 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 1.14 1999/10/13 16:39:30 vixie Exp"; #endif /* Imports */ #include "port_before.h" #ifndef WANT_IRS_PW static int __bind_irs_pw_unneeded; #else #include #include #include #include #include #include #include #include #include #include #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 */