4ef23ce695
package does have BXA export approval, but the licensing strings on the dnssafe code are a bit unpleasant. The crypto is easy to restore and bind will run without it - just without full dnssec support. Obtained from: The Internet Software Consortium (www.isc.org)
281 lines
6.3 KiB
C
281 lines
6.3 KiB
C
/*
|
|
* 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(LIBC_SCCS) && !defined(lint)
|
|
static const char rcsid[] = "$Id: dns_gr.c,v 1.19 1999/01/18 07:46:48 vixie Exp $";
|
|
#endif
|
|
|
|
/*
|
|
* dns_gr.c --- this file contains the functions for accessing
|
|
* group information from Hesiod.
|
|
*/
|
|
|
|
#include "port_before.h"
|
|
|
|
#ifndef WANT_IRS_GR
|
|
static int __bind_irs_gr_unneeded;
|
|
#else
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/types.h>
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
#include <unistd.h>
|
|
|
|
#include <sys/types.h>
|
|
#include <netinet/in.h>
|
|
#include <arpa/nameser.h>
|
|
#include <resolv.h>
|
|
|
|
#include <isc/memcluster.h>
|
|
|
|
#include <irs.h>
|
|
|
|
#include "port_after.h"
|
|
|
|
#include "irs_p.h"
|
|
#include "hesiod.h"
|
|
#include "dns_p.h"
|
|
|
|
/* Types. */
|
|
|
|
struct pvt {
|
|
/*
|
|
* This is our private accessor data. It has a shared hesiod context.
|
|
*/
|
|
struct dns_p * dns;
|
|
/*
|
|
* Need space to store the entries read from the group file.
|
|
* The members list also needs space per member, and the
|
|
* strings making up the user names must be allocated
|
|
* somewhere. Rather than doing lots of small allocations,
|
|
* we keep one buffer and resize it as needed.
|
|
*/
|
|
struct group group;
|
|
size_t nmemb; /* Malloc'd max index of gr_mem[]. */
|
|
char * membuf;
|
|
size_t membufsize;
|
|
};
|
|
|
|
/* Forward. */
|
|
|
|
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_close(struct irs_gr *);
|
|
static int gr_list(struct irs_gr *, const char *,
|
|
gid_t, gid_t *, int *);
|
|
static void gr_minimize(struct irs_gr *);
|
|
static struct __res_state * gr_res_get(struct irs_gr *);
|
|
static void gr_res_set(struct irs_gr *,
|
|
struct __res_state *,
|
|
void (*)(void *));
|
|
|
|
static struct group * get_hes_group(struct irs_gr *this,
|
|
const char *name,
|
|
const char *type);
|
|
|
|
/* Public. */
|
|
|
|
struct irs_gr *
|
|
irs_dns_gr(struct irs_acc *this) {
|
|
struct dns_p *dns = (struct dns_p *)this->private;
|
|
struct irs_gr *gr;
|
|
struct pvt *pvt;
|
|
|
|
if (!dns || !dns->hes_ctx) {
|
|
errno = ENODEV;
|
|
return (NULL);
|
|
}
|
|
if (!(pvt = memget(sizeof *pvt))) {
|
|
errno = ENOMEM;
|
|
return (NULL);
|
|
}
|
|
memset(pvt, 0, sizeof *pvt);
|
|
pvt->dns = dns;
|
|
if (!(gr = memget(sizeof *gr))) {
|
|
memput(pvt, sizeof *pvt);
|
|
errno = ENOMEM;
|
|
return (NULL);
|
|
}
|
|
memset(gr, 0x5e, sizeof *gr);
|
|
gr->private = pvt;
|
|
gr->next = gr_next;
|
|
gr->byname = gr_byname;
|
|
gr->bygid = gr_bygid;
|
|
gr->rewind = gr_rewind;
|
|
gr->close = gr_close;
|
|
gr->list = gr_list;
|
|
gr->minimize = gr_minimize;
|
|
gr->res_get = gr_res_get;
|
|
gr->res_set = gr_res_set;
|
|
return (gr);
|
|
}
|
|
|
|
/* methods */
|
|
|
|
static void
|
|
gr_close(struct irs_gr *this) {
|
|
struct pvt *pvt = (struct pvt *)this->private;
|
|
|
|
if (pvt->group.gr_mem)
|
|
free(pvt->group.gr_mem);
|
|
if (pvt->membuf)
|
|
free(pvt->membuf);
|
|
memput(pvt, sizeof *pvt);
|
|
memput(this, sizeof *this);
|
|
}
|
|
|
|
static struct group *
|
|
gr_next(struct irs_gr *this) {
|
|
return (NULL);
|
|
}
|
|
|
|
static struct group *
|
|
gr_byname(struct irs_gr *this, const char *name) {
|
|
return (get_hes_group(this, name, "group"));
|
|
}
|
|
|
|
static struct group *
|
|
gr_bygid(struct irs_gr *this, gid_t gid) {
|
|
char name[32];
|
|
|
|
sprintf(name, "%ld", (long)gid);
|
|
return (get_hes_group(this, name, "gid"));
|
|
}
|
|
|
|
static void
|
|
gr_rewind(struct irs_gr *this) {
|
|
/* NOOP */
|
|
}
|
|
|
|
static int
|
|
gr_list(struct irs_gr *this, const char *name,
|
|
gid_t basegid, gid_t *groups, int *ngroups)
|
|
{
|
|
*ngroups = 0;
|
|
/* There's some way to do this in Hesiod. */
|
|
return (-1);
|
|
}
|
|
|
|
static void
|
|
gr_minimize(struct irs_gr *this) {
|
|
/* NOOP */
|
|
}
|
|
|
|
/* Private. */
|
|
|
|
static struct group *
|
|
get_hes_group(struct irs_gr *this, const char *name, const char *type) {
|
|
struct pvt *pvt = (struct pvt *)this->private;
|
|
char **hes_list, *cp, **new;
|
|
size_t num_members = 0;
|
|
u_long t;
|
|
|
|
hes_list = hesiod_resolve(pvt->dns->hes_ctx, name, type);
|
|
if (!hes_list)
|
|
return (NULL);
|
|
|
|
/*
|
|
* Copy the returned hesiod string into storage space.
|
|
*/
|
|
if (pvt->membuf)
|
|
free(pvt->membuf);
|
|
pvt->membuf = strdup(*hes_list);
|
|
hesiod_free_list(pvt->dns->hes_ctx, hes_list);
|
|
|
|
cp = pvt->membuf;
|
|
pvt->group.gr_name = cp;
|
|
if (!(cp = strchr(cp, ':')))
|
|
goto cleanup;
|
|
*cp++ = '\0';
|
|
|
|
pvt->group.gr_passwd = cp;
|
|
if (!(cp = strchr(cp, ':')))
|
|
goto cleanup;
|
|
*cp++ = '\0';
|
|
|
|
errno = -1;
|
|
t = strtoul(cp, NULL, 10);
|
|
if (errno == ERANGE)
|
|
goto cleanup;
|
|
pvt->group.gr_gid = (gid_t) t;
|
|
if (!(cp = strchr(cp, ':')))
|
|
goto cleanup;
|
|
cp++;
|
|
|
|
/*
|
|
* Parse the members out.
|
|
*/
|
|
while (*cp) {
|
|
if (num_members+1 >= pvt->nmemb || pvt->group.gr_mem == NULL) {
|
|
pvt->nmemb += 10;
|
|
new = realloc(pvt->group.gr_mem,
|
|
pvt->nmemb * sizeof(char *));
|
|
if (new == NULL)
|
|
goto cleanup;
|
|
pvt->group.gr_mem = new;
|
|
}
|
|
pvt->group.gr_mem[num_members++] = cp;
|
|
if (!(cp = strchr(cp, ',')))
|
|
break;
|
|
*cp++ = '\0';
|
|
}
|
|
if (!pvt->group.gr_mem) {
|
|
pvt->group.gr_mem = malloc(sizeof(char*));
|
|
if (!pvt->group.gr_mem)
|
|
goto cleanup;
|
|
}
|
|
pvt->group.gr_mem[num_members] = NULL;
|
|
|
|
return (&pvt->group);
|
|
|
|
cleanup:
|
|
if (pvt->group.gr_mem) {
|
|
free(pvt->group.gr_mem);
|
|
pvt->group.gr_mem = NULL;
|
|
}
|
|
if (pvt->membuf) {
|
|
free(pvt->membuf);
|
|
pvt->membuf = NULL;
|
|
}
|
|
return (NULL);
|
|
}
|
|
|
|
static struct __res_state *
|
|
gr_res_get(struct irs_gr *this) {
|
|
struct pvt *pvt = (struct pvt *)this->private;
|
|
struct dns_p *dns = pvt->dns;
|
|
|
|
return (__hesiod_res_get(dns->hes_ctx));
|
|
}
|
|
|
|
static void
|
|
gr_res_set(struct irs_gr *this, struct __res_state * res,
|
|
void (*free_res)(void *)) {
|
|
struct pvt *pvt = (struct pvt *)this->private;
|
|
struct dns_p *dns = pvt->dns;
|
|
|
|
__hesiod_res_set(dns->hes_ctx, res, free_res);
|
|
}
|
|
|
|
#endif /* WANT_IRS_GR */
|