#include <machine/rtems-bsd-user-space.h>
/*-
* Copyright (c) 2009, Sun Microsystems, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - Neither the name of Sun Microsystems, Inc. nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)netnamer.c 1.13 91/03/11 Copyr 1986 Sun Micro";
#endif
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* netname utility routines convert from unix names to network names and
* vice-versa This module is operating system dependent! What we define here
* will work with any unix system that has adopted the sun NIS domain
* architecture.
*/
#include "namespace.h"
#include <sys/param.h>
#include <rpc/rpc.h>
#include <rpc/rpc_com.h>
#ifdef YP
#include <rpcsvc/yp_prot.h>
#include <rpcsvc/ypclnt.h>
#endif
#include <ctype.h>
#include <stdio.h>
#include <grp.h>
#include <pwd.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include "un-namespace.h"
static char *OPSYS = "unix";
#ifdef YP
static char *NETID = "netid.byname";
#endif
static char *NETIDFILE = "/etc/netid";
static int getnetid( char *, char * );
static int _getgroups( char *, gid_t * );
/*
* Convert network-name into unix credential
*/
int
netname2user(char netname[MAXNETNAMELEN + 1], uid_t *uidp, gid_t *gidp,
int *gidlenp, gid_t *gidlist)
{
char *p;
int gidlen;
uid_t uid;
long luid;
struct passwd *pwd;
char val[1024];
char *val1, *val2;
char *domain;
int vallen;
int err;
if (getnetid(netname, val)) {
char *res = val;
p = strsep(&res, ":");
if (p == NULL)
return (0);
*uidp = (uid_t) atol(p);
p = strsep(&res, "\n,");
if (p == NULL) {
return (0);
}
*gidp = (gid_t) atol(p);
for (gidlen = 0; gidlen < NGRPS; gidlen++) {
p = strsep(&res, "\n,");
if (p == NULL)
break;
gidlist[gidlen] = (gid_t) atol(p);
}
*gidlenp = gidlen;
return (1);
}
val1 = strchr(netname, '.');
if (val1 == NULL)
return (0);
if (strncmp(netname, OPSYS, (val1-netname)))
return (0);
val1++;
val2 = strchr(val1, '@');
if (val2 == NULL)
return (0);
vallen = val2 - val1;
if (vallen > (1024 - 1))
vallen = 1024 - 1;
(void) strncpy(val, val1, 1024);
val[vallen] = 0;
err = __rpc_get_default_domain(&domain); /* change to rpc */
if (err)
return (0);
if (strcmp(val2 + 1, domain))
return (0); /* wrong domain */
if (sscanf(val, "%ld", &luid) != 1)
return (0);
uid = luid;
/* use initgroups method */
pwd = getpwuid(uid);
if (pwd == NULL)
return (0);
*uidp = pwd->pw_uid;
*gidp = pwd->pw_gid;
*gidlenp = _getgroups(pwd->pw_name, gidlist);
return (1);
}
/*
* initgroups
*/
static int
_getgroups(char *uname, gid_t groups[NGRPS])
{
gid_t ngroups = 0;
struct group *grp;
int i;
int j;
int filter;
setgrent();
while ((grp = getgrent())) {
for (i = 0; grp->gr_mem[i]; i++)
if (!strcmp(grp->gr_mem[i], uname)) {
if (ngroups == NGRPS) {
#ifdef DEBUG
fprintf(stderr,
"initgroups: %s is in too many groups\n", uname);
#endif
goto toomany;
}
/* filter out duplicate group entries */
filter = 0;
for (j = 0; j < ngroups; j++)
if (groups[j] == grp->gr_gid) {
filter++;
break;
}
if (!filter)
groups[ngroups++] = grp->gr_gid;
}
}
toomany:
endgrent();
return (ngroups);
}
/*
* Convert network-name to hostname
*/
int
netname2host(char netname[MAXNETNAMELEN + 1], char *hostname, int hostlen)
{
int err;
char valbuf[1024];
char *val;
char *val2;
int vallen;
char *domain;
if (getnetid(netname, valbuf)) {
val = valbuf;
if ((*val == '0') && (val[1] == ':')) {
(void) strncpy(hostname, val + 2, hostlen);
return (1);
}
}
val = strchr(netname, '.');
if (val == NULL)
return (0);
if (strncmp(netname, OPSYS, (val - netname)))
return (0);
val++;
val2 = strchr(val, '@');
if (val2 == NULL)
return (0);
vallen = val2 - val;
if (vallen > (hostlen - 1))
vallen = hostlen - 1;
(void) strncpy(hostname, val, vallen);
hostname[vallen] = 0;
err = __rpc_get_default_domain(&domain); /* change to rpc */
if (err)
return (0);
if (strcmp(val2 + 1, domain))
return (0); /* wrong domain */
else
return (1);
}
/*
* reads the file /etc/netid looking for a + to optionally go to the
* network information service.
*/
int
getnetid(char *key, char *ret)
{
char buf[1024]; /* big enough */
char *res;
char *mkey;
char *mval;
FILE *fd;
#ifdef YP
char *domain;
int err;
char *lookup;
int len;
#endif
int rv;
rv = 0;
fd = fopen(NETIDFILE, "r");
if (fd == NULL) {
#ifdef YP
res = "+";
goto getnetidyp;
#else
return (0);
#endif
}
while (fd != NULL) {
res = fgets(buf, sizeof(buf), fd);
if (res == NULL) {
rv = 0;
goto done;
}
if (res[0] == '#')
continue;
else if (res[0] == '+') {
#ifdef YP
getnetidyp:
err = yp_get_default_domain(&domain);
if (err) {
continue;
}
lookup = NULL;
err = yp_match(domain, NETID, key,
strlen(key), &lookup, &len);
if (err) {
#ifdef DEBUG
fprintf(stderr, "match failed error %d\n", err);
#endif
continue;
}
lookup[len] = 0;
strcpy(ret, lookup);
free(lookup);
rv = 2;
goto done;
#else /* YP */
#ifdef DEBUG
fprintf(stderr,
"Bad record in %s '+' -- NIS not supported in this library copy\n",
NETIDFILE);
#endif
continue;
#endif /* YP */
} else {
mkey = strsep(&res, "\t ");
if (mkey == NULL) {
fprintf(stderr,
"Bad record in %s -- %s", NETIDFILE, buf);
continue;
}
do {
mval = strsep(&res, " \t#\n");
} while (mval != NULL && !*mval);
if (mval == NULL) {
fprintf(stderr,
"Bad record in %s val problem - %s", NETIDFILE, buf);
continue;
}
if (strcmp(mkey, key) == 0) {
strcpy(ret, mval);
rv = 1;
goto done;
}
}
}
done:
if (fd != NULL)
fclose(fd);
return (rv);
}
