2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
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16 * modification or enhancement.
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19 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
20 * OR ANY PART THEREOF.
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23 * or profits or other special, indirect and consequential damages, even if
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28 * Mountain View, California 94043
30 * $FreeBSD: src/lib/libc/rpc/netnamer.c,v 1.3.6.1 2000/09/20 04:43:11 jkh Exp $
31 * $DragonFly: src/lib/libc/rpc/netnamer.c,v 1.5 2005/11/13 12:27:04 swildner Exp $
33 * @(#)netnamer.c 1.13 91/03/11 Copyr 1986 Sun Micro
36 * netname utility routines convert from unix names to network names and
37 * vice-versa This module is operating system dependent! What we define here
38 * will work with any unix system that has adopted the sun NIS domain
41 #include <sys/param.h>
43 #include <rpc/rpc_com.h>
45 #include <rpcsvc/yp_prot.h>
46 #include <rpcsvc/ypclnt.h>
56 static char *OPSYS = "unix";
57 static char *NETID = "netid.byname";
58 static char *NETIDFILE = "/etc/netid";
60 static int getnetid ( char *, char * );
61 static int _getgroups ( char *, gid_t * );
68 * Convert network-name into unix credential
71 netname2user(char *netname, uid_t *uidp, gid_t *gidp, int *gidlenp,
85 if (getnetid(netname, val)) {
88 p = strsep(&res, ":");
91 *uidp = (uid_t) atol(p);
92 p = strsep(&res, "\n,");
96 *gidp = (gid_t) atol(p);
98 for (gidlen = 0; gidlen < NGROUPS; gidlen++) {
99 p = strsep(&res, "\n,");
102 gidlist[gidlen] = (gid_t) atol(p);
108 val1 = strchr(netname, '.');
111 if (strncmp(netname, OPSYS, (val1-netname)))
114 val2 = strchr(val1, '@');
117 vallen = val2 - val1;
118 if (vallen > (1024 - 1))
120 strncpy(val, val1, 1024);
123 err = _rpc_get_default_domain(&domain); /* change to rpc */
127 if (strcmp(val2 + 1, domain))
128 return (0); /* wrong domain */
130 if (sscanf(val, "%ld", &luid) != 1)
134 /* use initgroups method */
140 *gidlenp = _getgroups(pwd->pw_name, gidlist);
149 _getgroups(char *uname, gid_t *groups)
158 while ((grp = getgrent())) {
159 for (i = 0; grp->gr_mem[i]; i++)
160 if (!strcmp(grp->gr_mem[i], uname)) {
161 if (ngroups == NGROUPS) {
164 "initgroups: %s is in too many groups\n", uname);
168 /* filter out duplicate group entries */
170 for (j = 0; j < ngroups; j++)
171 if (groups[j] == grp->gr_gid) {
176 groups[ngroups++] = grp->gr_gid;
185 * Convert network-name to hostname
188 netname2host(char *netname, char *hostname, int hostlen)
197 if (getnetid(netname, valbuf)) {
199 if ((*val == '0') && (val[1] == ':')) {
200 strncpy(hostname, val + 2, hostlen);
204 val = strchr(netname, '.');
207 if (strncmp(netname, OPSYS, (val - netname)))
210 val2 = strchr(val, '@');
214 if (vallen > (hostlen - 1))
215 vallen = hostlen - 1;
216 strncpy(hostname, val, vallen);
217 hostname[vallen] = 0;
219 err = _rpc_get_default_domain(&domain); /* change to rpc */
223 if (strcmp(val2 + 1, domain))
224 return (0); /* wrong domain */
230 * reads the file /etc/netid looking for a + to optionally go to the
231 * network information service.
234 getnetid(char *key, char *ret)
236 char buf[1024]; /* big enough */
248 fd = fopen(NETIDFILE, "r");
259 return (0); /* getnetidyp brings us here */
260 res = fgets(buf, sizeof(buf), fd);
267 else if (res[0] == '+') {
270 err = yp_get_default_domain(&domain);
275 err = yp_match(domain, NETID, key,
276 strlen(key), &lookup, &len);
279 fprintf(stderr, "match failed error %d\n", err);
292 "Bad record in %s '+' -- NIS not supported in this library copy\n",
298 mkey = strsep(&res, "\t ");
301 "Bad record in %s -- %s", NETIDFILE, buf);
305 mval = strsep(&res, " \t#\n");
306 } while (mval != NULL && !*mval);
309 "Bad record in %s val problem - %s", NETIDFILE, buf);
312 if (strcmp(mkey, key) == 0) {