NetBSD/dist/bind/lib/irs/irp_gr.c

408 lines
7.1 KiB
C

/* $NetBSD: irp_gr.c,v 1.1.1.1 1999/11/20 18:54:09 veego Exp $ */
/*
* Portions Copyright(c) 1996, 1998 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(LIBC_SCCS) && !defined(lint)
static const char rcsid[] = "Id: irp_gr.c,v 8.1 1999/01/18 07:46:53 vixie Exp";
#endif /* LIBC_SCCS and not lint */
/* extern */
#include "port_before.h"
#ifndef WANT_IRS_PW
static int __bind_irs_gr_unneeded;
#else
#include <syslog.h>
#include <sys/param.h>
#include <sys/types.h>
#include <errno.h>
#include <fcntl.h>
#include <grp.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <syslog.h>
#include <irs.h>
#include <irp.h>
#include <isc/memcluster.h>
#include <isc/irpmarshall.h>
#include "irs_p.h"
#include "lcl_p.h"
#include "irp_p.h"
#include "port_after.h"
/* Types. */
/*
* Module for the getnetgrent(3) family to use when connected to a
* remote irp daemon.
*
* See irpd.c for justification of caching done here.
*
*/
struct pvt {
struct irp_p *girpdata; /* global IRP data */
int warned;
struct group group;
};
/* Forward. */
static void gr_close(struct irs_gr *);
static struct group * gr_next(struct irs_gr *);
static struct group * gr_byname(struct irs_gr *, const char *);
static struct group * gr_bygid(struct irs_gr *, gid_t);
static void gr_rewind(struct irs_gr *);
static void gr_minimize(struct irs_gr *);
/* Private */
static void free_group(struct group *gr);
/* Public. */
/*
* struct irs_gr * irs_irp_gr(struct irs_acc *this)
*
* Notes:
*
* Initialize the group sub-module.
*
* Notes:
*
* Module data.
*
*/
struct irs_gr *
irs_irp_gr(struct irs_acc *this) {
struct irs_gr *gr;
struct pvt *pvt;
if (!(gr = memget(sizeof *gr))) {
errno = ENOMEM;
return (NULL);
}
memset(gr, 0x0, sizeof *gr);
if (!(pvt = memget(sizeof *pvt))) {
memput(gr, sizeof *gr);
errno = ENOMEM;
return (NULL);
}
memset(pvt, 0x0, sizeof *pvt);
pvt->girpdata = this->private;
gr->private = pvt;
gr->close = gr_close;
gr->next = gr_next;
gr->byname = gr_byname;
gr->bygid = gr_bygid;
gr->rewind = gr_rewind;
gr->list = make_group_list;
gr->minimize = gr_minimize;
return (gr);
}
/* Methods. */
/*
* void gr_close(struct irs_gr *this)
*
* Notes:
*
* Close the sub-module.
*
*/
static void
gr_close(struct irs_gr *this) {
struct pvt *pvt = (struct pvt *)this->private;
gr_minimize(this);
memput(pvt, sizeof *pvt);
memput(this, sizeof *this);
}
/*
* struct group * gr_next(struct irs_gr *this)
*
* Notes:
*
* Gets the next group out of the cached data and returns it.
*
*/
static struct group *
gr_next(struct irs_gr *this) {
struct pvt *pvt = (struct pvt *)this->private;
struct group *gr = &pvt->group;
char *body;
size_t bodylen;
int code;
char text[256];
if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
return (NULL);
}
if (irs_irp_send_command(pvt->girpdata, "getgrent") != 0) {
return (NULL);
}
if (irs_irp_get_full_response(pvt->girpdata, &code,
text, sizeof text,
&body, &bodylen) != 0) {
if (irp_log_errors) {
syslog(LOG_WARNING, "getgrent failed: %s", text);
}
return (NULL);
}
if (code == IRPD_GETGROUP_OK) {
free_group(gr);
if (irp_unmarshall_gr(gr, body) != 0) {
gr = NULL;
}
} else {
gr = NULL;
}
if (body != NULL) {
memput(body, bodylen);
}
return (gr);
}
/*
* struct group * gr_byname(struct irs_gr *this, const char *name)
*
* Notes:
*
* Gets a group by name from irpd and returns it.
*
*/
static struct group *
gr_byname(struct irs_gr *this, const char *name) {
struct pvt *pvt = (struct pvt *)this->private;
struct group *gr = &pvt->group;
char *body;
size_t bodylen;
int code;
char text[256];
if (gr->gr_name != NULL && strcmp(name, gr->gr_name) == 0) {
return (gr);
}
if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
return (NULL);
}
if (irs_irp_send_command(pvt->girpdata, "getgrnam %s", name) != 0)
return (NULL);
if (irs_irp_get_full_response(pvt->girpdata, &code,
text, sizeof text,
&body, &bodylen) != 0) {
return (NULL);
}
if (code == IRPD_GETGROUP_OK) {
free_group(gr);
if (irp_unmarshall_gr(gr, body) != 0) {
gr = NULL;
}
} else {
gr = NULL;
}
if (body != NULL) {
memput(body, bodylen);
}
return (gr);
}
/*
* struct group * gr_bygid(struct irs_gr *this, gid_t gid)
*
* Notes:
*
* Gets a group by gid from irpd and returns it.
*
*/
static struct group *
gr_bygid(struct irs_gr *this, gid_t gid) {
struct pvt *pvt = (struct pvt *)this->private;
struct group *gr = &pvt->group;
char *body;
size_t bodylen;
int code;
char text[256];
if (gr->gr_name != NULL && gr->gr_gid == gid) {
return (gr);
}
if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
return (NULL);
}
if (irs_irp_send_command(pvt->girpdata, "getgrgid %d", gid) != 0)
return (NULL);
if (irs_irp_get_full_response(pvt->girpdata, &code,
text, sizeof text,
&body, &bodylen) != 0) {
return (NULL);
}
if (code == IRPD_GETGROUP_OK) {
free_group(gr);
if (irp_unmarshall_gr(gr, body) != 0) {
gr = NULL;
}
} else {
gr = NULL;
}
if (body != NULL) {
memput(body, bodylen);
}
return (gr);
}
/*
* void gr_rewind(struct irs_gr *this)
*
*/
static void
gr_rewind(struct irs_gr *this) {
struct pvt *pvt = (struct pvt *)this->private;
char text[256];
int code;
if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
return;
}
if (irs_irp_send_command(pvt->girpdata, "setgrent") != 0) {
return;
}
code = irs_irp_read_response(pvt->girpdata, text, sizeof text);
if (code != IRPD_GETGROUP_SETOK) {
if (irp_log_errors) {
syslog(LOG_WARNING, "setgrent failed: %s", text);
}
}
return;
}
/*
* void gr_minimize(struct irs_gr *this)
*
* Notes:
*
* Frees up cached data and disconnects(if necessary) from the remote.
*
*/
static void
gr_minimize(struct irs_gr *this) {
struct pvt *pvt = (struct pvt *)this->private;
free_group(&pvt->group);
irs_irp_disconnect(pvt->girpdata);
}
/* Private. */
/*
* static void free_group(struct group *gr);
*
* Deallocate all the memory irp_unmarshall_gr allocated.
*
*/
static void
free_group(struct group *gr) {
char **p;
if (gr == NULL)
return;
if (gr->gr_name != NULL)
free(gr->gr_name);
if (gr->gr_passwd != NULL)
free(gr->gr_passwd);
for (p = gr->gr_mem ; p != NULL && *p != NULL ; p++)
free(*p);
if (p != NULL)
free(p);
}
#endif /* WANT_IRS_GR */