336 lines
7.3 KiB
C
336 lines
7.3 KiB
C
/*
|
|
* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
|
|
* unrestricted use provided that this legend is included on all tape
|
|
* media and as a part of the software program in whole or part. Users
|
|
* may copy or modify Sun RPC without charge, but are not authorized
|
|
* to license or distribute it to anyone else except as part of a product or
|
|
* program developed by the user or with the express written consent of
|
|
* Sun Microsystems, Inc.
|
|
*
|
|
* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
|
|
* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
|
|
*
|
|
* Sun RPC is provided with no support and without any obligation on the
|
|
* part of Sun Microsystems, Inc. to assist in its use, correction,
|
|
* modification or enhancement.
|
|
*
|
|
* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
|
|
* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
|
|
* OR ANY PART THEREOF.
|
|
*
|
|
* In no event will Sun Microsystems, Inc. be liable for any lost revenue
|
|
* or profits or other special, indirect and consequential damages, even if
|
|
* Sun has been advised of the possibility of such damages.
|
|
*
|
|
* Sun Microsystems, Inc.
|
|
* 2550 Garcia Avenue
|
|
* Mountain View, California 94043
|
|
*/
|
|
|
|
#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 * );
|
|
|
|
#ifndef NGROUPS
|
|
#define NGROUPS 16
|
|
#endif
|
|
|
|
/*
|
|
* Convert network-name into unix credential
|
|
*/
|
|
int
|
|
netname2user(netname, uidp, gidp, gidlenp, gidlist)
|
|
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 < NGROUPS; 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(uname, groups)
|
|
char *uname;
|
|
gid_t groups[NGROUPS];
|
|
{
|
|
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 == NGROUPS) {
|
|
#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(netname, hostname, hostlen)
|
|
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(key, ret)
|
|
char *key, *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
|
|
|
|
fd = fopen(NETIDFILE, "r");
|
|
if (fd == NULL) {
|
|
#ifdef YP
|
|
res = "+";
|
|
goto getnetidyp;
|
|
#else
|
|
return (0);
|
|
#endif
|
|
}
|
|
for (;;) {
|
|
if (fd == NULL)
|
|
return (0); /* getnetidyp brings us here */
|
|
res = fgets(buf, sizeof(buf), fd);
|
|
if (res == NULL) {
|
|
fclose(fd);
|
|
return (0);
|
|
}
|
|
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);
|
|
if (fd != NULL)
|
|
fclose(fd);
|
|
return (2);
|
|
#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);
|
|
fclose(fd);
|
|
return (1);
|
|
|
|
}
|
|
}
|
|
}
|
|
}
|