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6 * modification, are permitted provided that the following conditions are met:
7 * - Redistributions of source code must retain the above copyright notice,
8 * this list of conditions and the following disclaimer.
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10 * this list of conditions and the following disclaimer in the documentation
11 * and/or other materials provided with the distribution.
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13 * contributors may be used to endorse or promote products derived
14 * from this software without specific prior written permission.
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17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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26 * POSSIBILITY OF SUCH DAMAGE.
28 * $FreeBSD: src/lib/libc/rpc/netnamer.c,v 1.12 2005/03/10 00:58:21 stefanf Exp $
29 * $DragonFly: src/lib/libc/rpc/netnamer.c,v 1.5 2005/11/13 12:27:04 swildner Exp $
31 * @(#)netnamer.c 1.13 91/03/11 Copyr 1986 Sun Micro
35 * netname utility routines convert from unix names to network names and
36 * vice-versa This module is operating system dependent! What we define here
37 * will work with any unix system that has adopted the sun NIS domain
40 #include "namespace.h"
41 #include <sys/param.h>
43 #include <rpc/rpc_com.h>
45 #include <rpcsvc/yp_prot.h>
46 #include <rpcsvc/ypclnt.h>
55 #include "un-namespace.h"
57 static char *OPSYS
= "unix";
59 static char *NETID
= "netid.byname";
61 static char *NETIDFILE
= "/etc/netid";
63 static int _getgroups(char *, gid_t
*);
64 static int getnetid(char *, char *);
71 * Convert network-name into unix credential
74 netname2user(char *netname
, uid_t
*uidp
, gid_t
*gidp
, int *gidlenp
,
88 if (getnetid(netname
, val
)) {
91 p
= strsep(&res
, ":");
94 *uidp
= (uid_t
) atol(p
);
95 p
= strsep(&res
, "\n,");
99 *gidp
= (gid_t
) atol(p
);
100 for (gidlen
= 0; gidlen
< NGROUPS
; gidlen
++) {
101 p
= strsep(&res
, "\n,");
104 gidlist
[gidlen
] = (gid_t
) atol(p
);
110 val1
= strchr(netname
, '.');
113 if (strncmp(netname
, OPSYS
, (val1
-netname
)))
116 val2
= strchr(val1
, '@');
119 vallen
= val2
- val1
;
120 if (vallen
> (1024 - 1))
122 strncpy(val
, val1
, 1024);
125 err
= __rpc_get_default_domain(&domain
); /* change to rpc */
129 if (strcmp(val2
+ 1, domain
))
130 return (0); /* wrong domain */
132 if (sscanf(val
, "%ld", &luid
) != 1)
136 /* use initgroups method */
142 *gidlenp
= _getgroups(pwd
->pw_name
, gidlist
);
151 _getgroups(char *uname
, gid_t
*groups
)
160 while ((grp
= getgrent())) {
161 for (i
= 0; grp
->gr_mem
[i
]; i
++)
162 if (!strcmp(grp
->gr_mem
[i
], uname
)) {
163 if (ngroups
== NGROUPS
) {
166 "initgroups: %s is in too many groups\n", uname
);
170 /* filter out duplicate group entries */
172 for (j
= 0; j
< ngroups
; j
++)
173 if (groups
[j
] == grp
->gr_gid
) {
178 groups
[ngroups
++] = grp
->gr_gid
;
187 * Convert network-name to hostname
190 netname2host(char *netname
, char *hostname
, int hostlen
)
199 if (getnetid(netname
, valbuf
)) {
201 if ((*val
== '0') && (val
[1] == ':')) {
202 strncpy(hostname
, val
+ 2, hostlen
);
206 val
= strchr(netname
, '.');
209 if (strncmp(netname
, OPSYS
, (val
- netname
)))
212 val2
= strchr(val
, '@');
216 if (vallen
> (hostlen
- 1))
217 vallen
= hostlen
- 1;
218 strncpy(hostname
, val
, vallen
);
219 hostname
[vallen
] = 0;
221 err
= __rpc_get_default_domain(&domain
); /* change to rpc */
225 if (strcmp(val2
+ 1, domain
))
226 return (0); /* wrong domain */
232 * reads the file /etc/netid looking for a + to optionally go to the
233 * network information service.
236 getnetid(char *key
, char *ret
)
238 char buf
[1024]; /* big enough */
250 fd
= fopen(NETIDFILE
, "r");
261 return (0); /* getnetidyp brings us here */
262 res
= fgets(buf
, sizeof(buf
), fd
);
269 else if (res
[0] == '+') {
272 err
= yp_get_default_domain(&domain
);
277 err
= yp_match(domain
, NETID
, key
,
278 strlen(key
), &lookup
, &len
);
281 fprintf(stderr
, "match failed error %d\n", err
);
294 "Bad record in %s '+' -- NIS not supported in this library copy\n",
300 mkey
= strsep(&res
, "\t ");
303 "Bad record in %s -- %s", NETIDFILE
, buf
);
307 mval
= strsep(&res
, " \t#\n");
308 } while (mval
!= NULL
&& !*mval
);
311 "Bad record in %s val problem - %s", NETIDFILE
, buf
);
314 if (strcmp(mkey
, key
) == 0) {