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[/] [or1k/] [trunk/] [rtems-20020807/] [cpukit/] [librpc/] [src/] [rpc/] [netnamer.c] - Blame information for rev 1026

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/*
 * 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(lint) && defined(SCCSIDS)
static char sccsid[] = "@(#)netnamer.c 1.13 91/03/11 Copyr 1986 Sun Micro";
#endif
/*
 * 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 <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>
 
static char    *OPSYS = "unix";
#ifdef YP
static char    *NETID = "netid.byname";
#endif
static char    *NETIDFILE = "/etc/netid";
 
static int getnetid __P(( char *, char * ));
static int _getgroups __P(( 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)) {
                p = strtok(val, ":");
                if (p == NULL)
                        return (0);
                *uidp = (uid_t) atol(val);
                p = strtok(NULL, "\n,");
                *gidp = (gid_t) atol(p);
                if (p == NULL) {
                        return (0);
                }
                gidlen = 0;
                for (gidlen = 0; gidlen < NGROUPS; gidlen++) {
                        p = strtok(NULL, "\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;
        register struct group *grp;
        register int    i;
        register 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 == (FILE *) 0) {
#ifdef YP
                res = "+";
                goto getnetidyp;
#else
                return (0);
#endif
        }
        for (;;) {
                if (fd == (FILE *) 0)
                        return (0);      /* getnetidyp brings us here */
                res = fgets(buf, 1024, fd);
                if (res == 0) {
                        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 = strtok(buf, "\t ");
                        if (mkey == NULL) {
                                fprintf(stderr,
                "Bad record in %s -- %s", NETIDFILE, buf);
                                continue;
                        }
                        mval = strtok(NULL, " \t#\n");
                        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);
 
                        }
                }
        }
}

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[/] [or1k/] [trunk/] [rtems-20020807/] [cpukit/] [librpc/] [src/] [rpc/] [netnamer.c] - Blame information for rev 1026

Line No.	Rev	Author	Line
1	1026	ivang	`/*`
2			`* Sun RPC is a product of Sun Microsystems, Inc. and is provided for`
3			`* unrestricted use provided that this legend is included on all tape`
4			`* media and as a part of the software program in whole or part. Users`
5			`* may copy or modify Sun RPC without charge, but are not authorized`
6			`* to license or distribute it to anyone else except as part of a product or`
7			`* program developed by the user or with the express written consent of`
8			`* Sun Microsystems, Inc.`
9			`*`
10			`* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE`
11			`* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR`
12			`* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.`
13			`*`
14			`* Sun RPC is provided with no support and without any obligation on the`
15			`* part of Sun Microsystems, Inc. to assist in its use, correction,`
16			`* modification or enhancement.`
17			`*`
18			`* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE`
19			`* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC`
20			`* OR ANY PART THEREOF.`
21			`*`
22			`* In no event will Sun Microsystems, Inc. be liable for any lost revenue`
23			`* or profits or other special, indirect and consequential damages, even if`
24			`* Sun has been advised of the possibility of such damages.`
25			`*`
26			`* Sun Microsystems, Inc.`
27			`* 2550 Garcia Avenue`
28			`* Mountain View, California 94043`
29			`*/`
30			`#if !defined(lint) && defined(SCCSIDS)`
31			`static char sccsid[] = "@(#)netnamer.c 1.13 91/03/11 Copyr 1986 Sun Micro";`
32			`#endif`
33			`/*`
34			`* netname utility routines convert from unix names to network names and`
35			`* vice-versa This module is operating system dependent! What we define here`
36			`* will work with any unix system that has adopted the sun NIS domain`
37			`* architecture.`
38			`*/`
39			`#include <sys/param.h>`
40			`#include <rpc/rpc.h>`
41			`#include <rpc/rpc_com.h>`
42			`#ifdef YP`
43			`#include <rpcsvc/yp_prot.h>`
44			`#include <rpcsvc/ypclnt.h>`
45			`#endif`
46			`#include <ctype.h>`
47			`#include <stdio.h>`
48			`#include <grp.h>`
49			`#include <pwd.h>`
50			`#include <string.h>`
51			`#include <stdlib.h>`
52			`#include <unistd.h>`
53
54			`static char *OPSYS = "unix";`
55			`#ifdef YP`
56			`static char *NETID = "netid.byname";`
57			`#endif`
58			`static char *NETIDFILE = "/etc/netid";`
59
60			`static int getnetid __P(( char , char ));`
61			`static int _getgroups __P(( char , gid_t ));`
62
63			`#ifndef NGROUPS`
64			`#define NGROUPS 16`
65			`#endif`
66
67			`/*`
68			`* Convert network-name into unix credential`
69			`*/`
70			`int`
71			`netname2user(netname, uidp, gidp, gidlenp, gidlist)`
72			`char netname[MAXNETNAMELEN + 1];`
73			`uid_t *uidp;`
74			`gid_t *gidp;`
75			`int *gidlenp;`
76			`gid_t *gidlist;`
77			`{`
78			`char *p;`
79			`int gidlen;`
80			`uid_t uid;`
81			`long luid;`
82			`struct passwd *pwd;`
83			`char val[1024];`
84			`char val1, val2;`
85			`char *domain;`
86			`int vallen;`
87			`int err;`
88
89			`if (getnetid(netname, val)) {`
90			`p = strtok(val, ":");`
91			`if (p == NULL)`
92			`return (0);`
93			`*uidp = (uid_t) atol(val);`
94			`p = strtok(NULL, "\n,");`
95			`*gidp = (gid_t) atol(p);`
96			`if (p == NULL) {`
97			`return (0);`
98			`}`
99			`gidlen = 0;`
100			`for (gidlen = 0; gidlen < NGROUPS; gidlen++) {`
101			`p = strtok(NULL, "\n,");`
102			`if (p == NULL)`
103			`break;`
104			`gidlist[gidlen] = (gid_t) atol(p);`
105			`}`
106			`*gidlenp = gidlen;`
107
108			`return (1);`
109			`}`
110			`val1 = strchr(netname, '.');`
111			`if (val1 == NULL)`
112			`return (0);`
113			`if (strncmp(netname, OPSYS, (val1-netname)))`
114			`return (0);`
115			`val1++;`
116			`val2 = strchr(val1, '@');`
117			`if (val2 == NULL)`
118			`return (0);`
119			`vallen = val2 - val1;`
120			`if (vallen > (1024 - 1))`
121			`vallen = 1024 - 1;`
122			`(void) strncpy(val, val1, 1024);`
123			`val[vallen] = 0;`
124
125			`err = _rpc_get_default_domain(&domain); /* change to rpc */`
126			`if (err)`
127			`return (0);`
128
129			`if (strcmp(val2 + 1, domain))`
130			`return (0); /* wrong domain */`
131
132			`if (sscanf(val, "%ld", &luid) != 1)`
133			`return (0);`
134			`uid = luid;`
135
136			`/* use initgroups method */`
137			`pwd = getpwuid(uid);`
138			`if (pwd == NULL)`
139			`return (0);`
140			`*uidp = pwd->pw_uid;`
141			`*gidp = pwd->pw_gid;`
142			`*gidlenp = _getgroups(pwd->pw_name, gidlist);`
143			`return (1);`
144			`}`
145
146			`/*`
147			`* initgroups`
148			`*/`
149
150			`static int`
151			`_getgroups(uname, groups)`
152			`char *uname;`
153			`gid_t groups[NGROUPS];`
154			`{`
155			`gid_t ngroups = 0;`
156			`register struct group *grp;`
157			`register int i;`
158			`register int j;`
159			`int filter;`
160
161			`setgrent();`
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) {`
166			`#ifdef DEBUG`
167			`fprintf(stderr,`
168			`"initgroups: %s is in too many groups\n", uname);`
169			`#endif`
170			`goto toomany;`
171			`}`
172			`/* filter out duplicate group entries */`
173			`filter = 0;`
174			`for (j = 0; j < ngroups; j++)`
175			`if (groups[j] == grp->gr_gid) {`
176			`filter++;`
177			`break;`
178			`}`
179			`if (!filter)`
180			`groups[ngroups++] = grp->gr_gid;`
181			`}`
182			`}`
183			`toomany:`
184			`endgrent();`
185			`return (ngroups);`
186			`}`
187
188			`/*`
189			`* Convert network-name to hostname`
190			`*/`
191			`int`
192			`netname2host(netname, hostname, hostlen)`
193			`char netname[MAXNETNAMELEN + 1];`
194			`char *hostname;`
195			`int hostlen;`
196			`{`
197			`int err;`
198			`char valbuf[1024];`
199			`char *val;`
200			`char *val2;`
201			`int vallen;`
202			`char *domain;`
203
204			`if (getnetid(netname, valbuf)) {`
205			`val = valbuf;`
206			`if ((*val == '0') && (val[1] == ':')) {`
207			`(void) strncpy(hostname, val + 2, hostlen);`
208			`return (1);`
209			`}`
210			`}`
211			`val = strchr(netname, '.');`
212			`if (val == NULL)`
213			`return (0);`
214			`if (strncmp(netname, OPSYS, (val - netname)))`
215			`return (0);`
216			`val++;`
217			`val2 = strchr(val, '@');`
218			`if (val2 == NULL)`
219			`return (0);`
220			`vallen = val2 - val;`
221			`if (vallen > (hostlen - 1))`
222			`vallen = hostlen - 1;`
223			`(void) strncpy(hostname, val, vallen);`
224			`hostname[vallen] = 0;`
225
226			`err = _rpc_get_default_domain(&domain); /* change to rpc */`
227			`if (err)`
228			`return (0);`
229
230			`if (strcmp(val2 + 1, domain))`
231			`return (0); /* wrong domain */`
232			`else`
233			`return (1);`
234			`}`
235
236			`/*`
237			`* reads the file /etc/netid looking for a + to optionally go to the`
238			`* network information service.`
239			`*/`
240			`int`
241			`getnetid(key, ret)`
242			`char key, ret;`
243			`{`
244			`char buf[1024]; /* big enough */`
245			`char *res;`
246			`char *mkey;`
247			`char *mval;`
248			`FILE *fd;`
249			`#ifdef YP`
250			`char *domain;`
251			`int err;`
252			`char *lookup;`
253			`int len;`
254			`#endif`
255
256			`fd = fopen(NETIDFILE, "r");`
257			`if (fd == (FILE *) 0) {`
258			`#ifdef YP`
259			`res = "+";`
260			`goto getnetidyp;`
261			`#else`
262			`return (0);`
263			`#endif`
264			`}`
265			`for (;;) {`
266			`if (fd == (FILE *) 0)`
267			`return (0); /* getnetidyp brings us here */`
268			`res = fgets(buf, 1024, fd);`
269			`if (res == 0) {`
270			`fclose(fd);`
271			`return (0);`
272			`}`
273			`if (res[0] == '#')`
274			`continue;`
275			`else if (res[0] == '+') {`
276			`#ifdef YP`
277			`getnetidyp:`
278			`err = yp_get_default_domain(&domain);`
279			`if (err) {`
280			`continue;`
281			`}`
282			`lookup = NULL;`
283			`err = yp_match(domain, NETID, key,`
284			`strlen(key), &lookup, &len);`
285			`if (err) {`
286			`#ifdef DEBUG`
287			`fprintf(stderr, "match failed error %d\n", err);`
288			`#endif`
289			`continue;`
290			`}`
291			`lookup[len] = 0;`
292			`strcpy(ret, lookup);`
293			`free(lookup);`
294			`if (fd != NULL)`
295			`fclose(fd);`
296			`return (2);`
297			`#else /* YP */`
298			`#ifdef DEBUG`
299			`fprintf(stderr,`
300			`"Bad record in %s '+' -- NIS not supported in this library copy\n",`
301			`NETIDFILE);`
302			`#endif`
303			`continue;`
304			`#endif /* YP */`
305			`} else {`
306			`mkey = strtok(buf, "\t ");`
307			`if (mkey == NULL) {`
308			`fprintf(stderr,`
309			`"Bad record in %s -- %s", NETIDFILE, buf);`
310			`continue;`
311			`}`
312			`mval = strtok(NULL, " \t#\n");`
313			`if (mval == NULL) {`
314			`fprintf(stderr,`
315			`"Bad record in %s val problem - %s", NETIDFILE, buf);`
316			`continue;`
317			`}`
318			`if (strcmp(mkey, key) == 0) {`
319			`strcpy(ret, mval);`
320			`fclose(fd);`
321			`return (1);`
322
323			`}`
324			`}`
325			`}`
326			`}`