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/* $OpenBSD: table_getpwnam.c,v 1.14 2021/06/14 17:58:16 eric Exp $ */
/*
* Copyright (c) 2012 Gilles Chehade <gilles@poolp.org>
*
* 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 THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR 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.
*/
#include <errno.h>
#include <pwd.h>
#include "smtpd.h"
/* getpwnam(3) backend */
static int table_getpwnam_config(struct table *);
static int table_getpwnam_update(struct table *);
static int table_getpwnam_open(struct table *);
static int table_getpwnam_lookup(struct table *, enum table_service, const char *,
char **);
static void table_getpwnam_close(struct table *);
struct table_backend table_backend_getpwnam = {
"getpwnam",
K_USERINFO,
table_getpwnam_config,
NULL,
NULL,
table_getpwnam_open,
table_getpwnam_update,
table_getpwnam_close,
table_getpwnam_lookup,
};
static int
table_getpwnam_config(struct table *table)
{
if (table->t_config[0])
return 0;
return 1;
}
static int
table_getpwnam_update(struct table *table)
{
return 1;
}
static int
table_getpwnam_open(struct table *table)
{
return 1;
}
static void
table_getpwnam_close(struct table *table)
{
return;
}
static int
table_getpwnam_lookup(struct table *table, enum table_service kind, const char *key,
char **dst)
{
struct passwd *pw;
if (kind != K_USERINFO)
return -1;
errno = 0;
do {
pw = getpwnam(key);
} while (pw == NULL && errno == EINTR);
if (pw == NULL) {
if (errno)
return -1;
return 0;
}
if (dst == NULL)
return 1;
if (asprintf(dst, "%d:%d:%s",
pw->pw_uid,
pw->pw_gid,
pw->pw_dir) == -1) {
*dst = NULL;
return -1;
}
return (1);
}
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