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20 * OR ANY PART THEREOF.
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28 * Mountain View, California 94043
30 * $FreeBSD: src/lib/libc/rpc/netnamer.c,v 1.12 2005/03/10 00:58:21 stefanf 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
37 * netname utility routines convert from unix names to network names and
38 * vice-versa This module is operating system dependent! What we define here
39 * will work with any unix system that has adopted the sun NIS domain
42 #include "namespace.h"
43 #include <sys/param.h>
45 #include <rpc/rpc_com.h>
47 #include <rpcsvc/yp_prot.h>
48 #include <rpcsvc/ypclnt.h>
57 #include "un-namespace.h"
59 static char *OPSYS = "unix";
61 static char *NETID = "netid.byname";
63 static char *NETIDFILE = "/etc/netid";
65 static int _getgroups(char *, gid_t *);
66 static int getnetid(char *, char *);
73 * Convert network-name into unix credential
76 netname2user(char *netname, uid_t *uidp, gid_t *gidp, int *gidlenp,
90 if (getnetid(netname, val)) {
93 p = strsep(&res, ":");
96 *uidp = (uid_t) atol(p);
97 p = strsep(&res, "\n,");
101 *gidp = (gid_t) atol(p);
102 for (gidlen = 0; gidlen < NGROUPS; gidlen++) {
103 p = strsep(&res, "\n,");
106 gidlist[gidlen] = (gid_t) atol(p);
112 val1 = strchr(netname, '.');
115 if (strncmp(netname, OPSYS, (val1-netname)))
118 val2 = strchr(val1, '@');
121 vallen = val2 - val1;
122 if (vallen > (1024 - 1))
124 strncpy(val, val1, 1024);
127 err = __rpc_get_default_domain(&domain); /* change to rpc */
131 if (strcmp(val2 + 1, domain))
132 return (0); /* wrong domain */
134 if (sscanf(val, "%ld", &luid) != 1)
138 /* use initgroups method */
144 *gidlenp = _getgroups(pwd->pw_name, gidlist);
153 _getgroups(char *uname, gid_t *groups)
162 while ((grp = getgrent())) {
163 for (i = 0; grp->gr_mem[i]; i++)
164 if (!strcmp(grp->gr_mem[i], uname)) {
165 if (ngroups == NGROUPS) {
168 "initgroups: %s is in too many groups\n", uname);
172 /* filter out duplicate group entries */
174 for (j = 0; j < ngroups; j++)
175 if (groups[j] == grp->gr_gid) {
180 groups[ngroups++] = grp->gr_gid;
189 * Convert network-name to hostname
192 netname2host(char *netname, char *hostname, int hostlen)
201 if (getnetid(netname, valbuf)) {
203 if ((*val == '0') && (val[1] == ':')) {
204 strncpy(hostname, val + 2, hostlen);
208 val = strchr(netname, '.');
211 if (strncmp(netname, OPSYS, (val - netname)))
214 val2 = strchr(val, '@');
218 if (vallen > (hostlen - 1))
219 vallen = hostlen - 1;
220 strncpy(hostname, val, vallen);
221 hostname[vallen] = 0;
223 err = __rpc_get_default_domain(&domain); /* change to rpc */
227 if (strcmp(val2 + 1, domain))
228 return (0); /* wrong domain */
234 * reads the file /etc/netid looking for a + to optionally go to the
235 * network information service.
238 getnetid(char *key, char *ret)
240 char buf[1024]; /* big enough */
252 fd = fopen(NETIDFILE, "r");
263 return (0); /* getnetidyp brings us here */
264 res = fgets(buf, sizeof(buf), fd);
271 else if (res[0] == '+') {
274 err = yp_get_default_domain(&domain);
279 err = yp_match(domain, NETID, key,
280 strlen(key), &lookup, &len);
283 fprintf(stderr, "match failed error %d\n", err);
296 "Bad record in %s '+' -- NIS not supported in this library copy\n",
302 mkey = strsep(&res, "\t ");
305 "Bad record in %s -- %s", NETIDFILE, buf);
309 mval = strsep(&res, " \t#\n");
310 } while (mval != NULL && !*mval);
313 "Bad record in %s val problem - %s", NETIDFILE, buf);
316 if (strcmp(mkey, key) == 0) {