1 files changed, 234 insertions, 0 deletions
diff --git a/lib/bind/irs/gen_pw.c b/lib/bind/irs/gen_pw.c
new file mode 100644
index 0000000..80d9b5d
--- /dev/null
+++ b/lib/bind/irs/gen_pw.c
@@ -0,0 +1,234 @@
+/*
+ * 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 1.2.18.1 2005/04/27 05:00:57 sra 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 */
+/*! \file */