1/*
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#ifndef lint
31#if 0
32static char sccsid[] = "@(#)update.c 1.2 91/03/11 Copyr 1986 Sun Micro";
33#endif
34static const char rcsid[] =
| 1/*
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#ifndef lint
31#if 0
32static char sccsid[] = "@(#)update.c 1.2 91/03/11 Copyr 1986 Sun Micro";
33#endif
34static const char rcsid[] =
|
35 "$Id: update.c,v 1.2 1997/07/29 06:54:16 charnier Exp $";
| 35 "$Id: update.c,v 1.3 1998/02/20 04:38:20 jb Exp $";
|
36#endif
37
38/*
39 * Copyright (C) 1986, 1989, Sun Microsystems, Inc.
40 */
41
42/*
43 * Administrative tool to add a new user to the publickey database
44 */
45#include <stdio.h>
46#include <stdlib.h>
47#include <rpc/rpc.h>
48#include <rpc/key_prot.h>
49#ifdef YP
50#include <rpcsvc/yp_prot.h>
51#include <rpcsvc/ypclnt.h>
52#include <sys/wait.h>
53#include <netdb.h>
54#endif /* YP */
55#include <pwd.h>
56#include <string.h>
57#include <unistd.h>
58#include <sys/resource.h>
59
60#ifdef YP
61#define MAXMAPNAMELEN 256
62#else
63#define YPOP_CHANGE 1 /* change, do not add */
64#define YPOP_INSERT 2 /* add, do not change */
65#define YPOP_DELETE 3 /* delete this entry */
66#define YPOP_STORE 4 /* add, or change */
67#endif
68
69#ifdef YP
70static char *basename();
71static char SHELL[] = "/bin/sh";
72static char YPDBPATH[]="/var/yp"; /* This is defined but not used! */
73static char PKMAP[] = "publickey.byname";
74static char UPDATEFILE[] = "updaters";
75#else
76static char PKFILE[] = "/etc/publickey";
77#endif /* YP */
78
79#ifdef YP
80static int _openchild __P(( char *, FILE **, FILE ** ));
81
82/*
83 * Determine if requester is allowed to update the given map,
84 * and update it if so. Returns the yp status, which is zero
85 * if there is no access violation.
86 */
87mapupdate(requester, mapname, op, keylen, key, datalen, data)
88 char *requester;
89 char *mapname;
90 u_int op;
91 u_int keylen;
92 char *key;
93 u_int datalen;
94 char *data;
95{
96 char updater[MAXMAPNAMELEN + 40];
97 FILE *childargs;
98 FILE *childrslt;
99#ifdef WEXITSTATUS
100 int status;
101#else
102 union wait status;
103#endif
104 pid_t pid;
105 u_int yperrno;
106
107
108#ifdef DEBUG
109 printf("%s %s\n", key, data);
110#endif
111 (void)sprintf(updater, "make -s -f %s/%s %s", YPDBPATH, /* !!! */
112 UPDATEFILE, mapname);
113 pid = _openchild(updater, &childargs, &childrslt);
114 if (pid < 0) {
115 return (YPERR_YPERR);
116 }
117
118 /*
119 * Write to child
120 */
121 (void)fprintf(childargs, "%s\n", requester);
122 (void)fprintf(childargs, "%u\n", op);
123 (void)fprintf(childargs, "%u\n", keylen);
124 (void)fwrite(key, (int)keylen, 1, childargs);
125 (void)fprintf(childargs, "\n");
126 (void)fprintf(childargs, "%u\n", datalen);
127 (void)fwrite(data, (int)datalen, 1, childargs);
128 (void)fprintf(childargs, "\n");
129 (void)fclose(childargs);
130
131 /*
132 * Read from child
133 */
134 (void)fscanf(childrslt, "%d", &yperrno);
135 (void)fclose(childrslt);
136
137 (void)wait(&status);
138#ifdef WEXITSTATUS
139 if (WEXITSTATUS(status) != 0) {
140#else
141 if (status.w_retcode != 0) {
142#endif
143 return (YPERR_YPERR);
144 }
145 return (yperrno);
146}
147
148/*
149 * returns pid, or -1 for failure
150 */
151static
152_openchild(command, fto, ffrom)
153 char *command;
154 FILE **fto;
155 FILE **ffrom;
156{
157 int i;
158 pid_t pid;
159 int pdto[2];
160 int pdfrom[2];
161 char *com;
162 struct rlimit rl;
163
164 if (pipe(pdto) < 0) {
165 goto error1;
166 }
167 if (pipe(pdfrom) < 0) {
168 goto error2;
169 }
| 36#endif
37
38/*
39 * Copyright (C) 1986, 1989, Sun Microsystems, Inc.
40 */
41
42/*
43 * Administrative tool to add a new user to the publickey database
44 */
45#include <stdio.h>
46#include <stdlib.h>
47#include <rpc/rpc.h>
48#include <rpc/key_prot.h>
49#ifdef YP
50#include <rpcsvc/yp_prot.h>
51#include <rpcsvc/ypclnt.h>
52#include <sys/wait.h>
53#include <netdb.h>
54#endif /* YP */
55#include <pwd.h>
56#include <string.h>
57#include <unistd.h>
58#include <sys/resource.h>
59
60#ifdef YP
61#define MAXMAPNAMELEN 256
62#else
63#define YPOP_CHANGE 1 /* change, do not add */
64#define YPOP_INSERT 2 /* add, do not change */
65#define YPOP_DELETE 3 /* delete this entry */
66#define YPOP_STORE 4 /* add, or change */
67#endif
68
69#ifdef YP
70static char *basename();
71static char SHELL[] = "/bin/sh";
72static char YPDBPATH[]="/var/yp"; /* This is defined but not used! */
73static char PKMAP[] = "publickey.byname";
74static char UPDATEFILE[] = "updaters";
75#else
76static char PKFILE[] = "/etc/publickey";
77#endif /* YP */
78
79#ifdef YP
80static int _openchild __P(( char *, FILE **, FILE ** ));
81
82/*
83 * Determine if requester is allowed to update the given map,
84 * and update it if so. Returns the yp status, which is zero
85 * if there is no access violation.
86 */
87mapupdate(requester, mapname, op, keylen, key, datalen, data)
88 char *requester;
89 char *mapname;
90 u_int op;
91 u_int keylen;
92 char *key;
93 u_int datalen;
94 char *data;
95{
96 char updater[MAXMAPNAMELEN + 40];
97 FILE *childargs;
98 FILE *childrslt;
99#ifdef WEXITSTATUS
100 int status;
101#else
102 union wait status;
103#endif
104 pid_t pid;
105 u_int yperrno;
106
107
108#ifdef DEBUG
109 printf("%s %s\n", key, data);
110#endif
111 (void)sprintf(updater, "make -s -f %s/%s %s", YPDBPATH, /* !!! */
112 UPDATEFILE, mapname);
113 pid = _openchild(updater, &childargs, &childrslt);
114 if (pid < 0) {
115 return (YPERR_YPERR);
116 }
117
118 /*
119 * Write to child
120 */
121 (void)fprintf(childargs, "%s\n", requester);
122 (void)fprintf(childargs, "%u\n", op);
123 (void)fprintf(childargs, "%u\n", keylen);
124 (void)fwrite(key, (int)keylen, 1, childargs);
125 (void)fprintf(childargs, "\n");
126 (void)fprintf(childargs, "%u\n", datalen);
127 (void)fwrite(data, (int)datalen, 1, childargs);
128 (void)fprintf(childargs, "\n");
129 (void)fclose(childargs);
130
131 /*
132 * Read from child
133 */
134 (void)fscanf(childrslt, "%d", &yperrno);
135 (void)fclose(childrslt);
136
137 (void)wait(&status);
138#ifdef WEXITSTATUS
139 if (WEXITSTATUS(status) != 0) {
140#else
141 if (status.w_retcode != 0) {
142#endif
143 return (YPERR_YPERR);
144 }
145 return (yperrno);
146}
147
148/*
149 * returns pid, or -1 for failure
150 */
151static
152_openchild(command, fto, ffrom)
153 char *command;
154 FILE **fto;
155 FILE **ffrom;
156{
157 int i;
158 pid_t pid;
159 int pdto[2];
160 int pdfrom[2];
161 char *com;
162 struct rlimit rl;
163
164 if (pipe(pdto) < 0) {
165 goto error1;
166 }
167 if (pipe(pdfrom) < 0) {
168 goto error2;
169 }
|
170#ifdef VFORK
171 switch (pid = vfork()) {
172#else
| |
173 switch (pid = fork()) {
| 170 switch (pid = fork()) {
|
174#endif
| |
175 case -1:
176 goto error3;
177
178 case 0:
179 /*
180 * child: read from pdto[0], write into pdfrom[1]
181 */
182 (void)close(0);
183 (void)dup(pdto[0]);
184 (void)close(1);
185 (void)dup(pdfrom[1]);
186 getrlimit(RLIMIT_NOFILE, &rl);
187 for (i = rl.rlim_max - 1; i >= 3; i--) {
188 (void) close(i);
189 }
190 com = malloc((unsigned) strlen(command) + 6);
191 if (com == NULL) {
192 _exit(~0);
193 }
194 (void)sprintf(com, "exec %s", command);
195 execl(SHELL, basename(SHELL), "-c", com, NULL);
196 _exit(~0);
197
198 default:
199 /*
200 * parent: write into pdto[1], read from pdfrom[0]
201 */
202 *fto = fdopen(pdto[1], "w");
203 (void)close(pdto[0]);
204 *ffrom = fdopen(pdfrom[0], "r");
205 (void)close(pdfrom[1]);
206 break;
207 }
208 return (pid);
209
210 /*
211 * error cleanup and return
212 */
213error3:
214 (void)close(pdfrom[0]);
215 (void)close(pdfrom[1]);
216error2:
217 (void)close(pdto[0]);
218 (void)close(pdto[1]);
219error1:
220 return (-1);
221}
222
223static char *
224basename(path)
225 char *path;
226{
227 char *p;
228
229 p = strrchr(path, '/');
230 if (p == NULL) {
231 return (path);
232 } else {
233 return (p + 1);
234 }
235}
236
237#else /* YP */
238
239#define ERR_ACCESS 1
240#define ERR_MALLOC 2
241#define ERR_READ 3
242#define ERR_WRITE 4
243#define ERR_DBASE 5
244#define ERR_KEY 6
245
246static int match __P(( char * , char * ));
247
248/*
249 * Determine if requester is allowed to update the given map,
250 * and update it if so. Returns the status, which is zero
251 * if there is no access violation. This function updates
252 * the local file and then shuts up.
253 */
254localupdate(name, filename, op, keylen, key, datalen, data)
255 char *name; /* Name of the requestor */
256 char *filename;
257 u_int op;
258 u_int keylen; /* Not used */
259 char *key;
260 u_int datalen; /* Not used */
261 char *data;
262{
263 char line[256];
264 FILE *rf;
265 FILE *wf;
266 char *tmpname;
267 int err;
268
269 /*
270 * Check permission
271 */
272 if (strcmp(name, key) != 0) {
273 return (ERR_ACCESS);
274 }
275 if (strcmp(name, "nobody") == 0) {
276 /*
277 * Can't change "nobody"s key.
278 */
279 return (ERR_ACCESS);
280 }
281
282 /*
283 * Open files
284 */
285 tmpname = malloc(strlen(filename) + 4);
286 if (tmpname == NULL) {
287 return (ERR_MALLOC);
288 }
289 sprintf(tmpname, "%s.tmp", filename);
290 rf = fopen(filename, "r");
291 if (rf == NULL) {
292 return (ERR_READ);
293 }
294 wf = fopen(tmpname, "w");
295 if (wf == NULL) {
296 return (ERR_WRITE);
297 }
298 err = -1;
299 while (fgets(line, sizeof (line), rf)) {
300 if (err < 0 && match(line, name)) {
301 switch (op) {
302 case YPOP_INSERT:
303 err = ERR_KEY;
304 break;
305 case YPOP_STORE:
306 case YPOP_CHANGE:
307 fprintf(wf, "%s %s\n", key, data);
308 err = 0;
309 break;
310 case YPOP_DELETE:
311 /* do nothing */
312 err = 0;
313 break;
314 }
315 } else {
316 fputs(line, wf);
317 }
318 }
319 if (err < 0) {
320 switch (op) {
321 case YPOP_CHANGE:
322 case YPOP_DELETE:
323 err = ERR_KEY;
324 break;
325 case YPOP_INSERT:
326 case YPOP_STORE:
327 err = 0;
328 fprintf(wf, "%s %s\n", key, data);
329 break;
330 }
331 }
332 fclose(wf);
333 fclose(rf);
334 if (err == 0) {
335 if (rename(tmpname, filename) < 0) {
336 return (ERR_DBASE);
337 }
338 } else {
339 if (unlink(tmpname) < 0) {
340 return (ERR_DBASE);
341 }
342 }
343 return (err);
344}
345
346static
347match(line, name)
348 char *line;
349 char *name;
350{
351 int len;
352
353 len = strlen(name);
354 return (strncmp(line, name, len) == 0 &&
355 (line[len] == ' ' || line[len] == '\t'));
356}
357#endif /* !YP */
358
| 171 case -1:
172 goto error3;
173
174 case 0:
175 /*
176 * child: read from pdto[0], write into pdfrom[1]
177 */
178 (void)close(0);
179 (void)dup(pdto[0]);
180 (void)close(1);
181 (void)dup(pdfrom[1]);
182 getrlimit(RLIMIT_NOFILE, &rl);
183 for (i = rl.rlim_max - 1; i >= 3; i--) {
184 (void) close(i);
185 }
186 com = malloc((unsigned) strlen(command) + 6);
187 if (com == NULL) {
188 _exit(~0);
189 }
190 (void)sprintf(com, "exec %s", command);
191 execl(SHELL, basename(SHELL), "-c", com, NULL);
192 _exit(~0);
193
194 default:
195 /*
196 * parent: write into pdto[1], read from pdfrom[0]
197 */
198 *fto = fdopen(pdto[1], "w");
199 (void)close(pdto[0]);
200 *ffrom = fdopen(pdfrom[0], "r");
201 (void)close(pdfrom[1]);
202 break;
203 }
204 return (pid);
205
206 /*
207 * error cleanup and return
208 */
209error3:
210 (void)close(pdfrom[0]);
211 (void)close(pdfrom[1]);
212error2:
213 (void)close(pdto[0]);
214 (void)close(pdto[1]);
215error1:
216 return (-1);
217}
218
219static char *
220basename(path)
221 char *path;
222{
223 char *p;
224
225 p = strrchr(path, '/');
226 if (p == NULL) {
227 return (path);
228 } else {
229 return (p + 1);
230 }
231}
232
233#else /* YP */
234
235#define ERR_ACCESS 1
236#define ERR_MALLOC 2
237#define ERR_READ 3
238#define ERR_WRITE 4
239#define ERR_DBASE 5
240#define ERR_KEY 6
241
242static int match __P(( char * , char * ));
243
244/*
245 * Determine if requester is allowed to update the given map,
246 * and update it if so. Returns the status, which is zero
247 * if there is no access violation. This function updates
248 * the local file and then shuts up.
249 */
250localupdate(name, filename, op, keylen, key, datalen, data)
251 char *name; /* Name of the requestor */
252 char *filename;
253 u_int op;
254 u_int keylen; /* Not used */
255 char *key;
256 u_int datalen; /* Not used */
257 char *data;
258{
259 char line[256];
260 FILE *rf;
261 FILE *wf;
262 char *tmpname;
263 int err;
264
265 /*
266 * Check permission
267 */
268 if (strcmp(name, key) != 0) {
269 return (ERR_ACCESS);
270 }
271 if (strcmp(name, "nobody") == 0) {
272 /*
273 * Can't change "nobody"s key.
274 */
275 return (ERR_ACCESS);
276 }
277
278 /*
279 * Open files
280 */
281 tmpname = malloc(strlen(filename) + 4);
282 if (tmpname == NULL) {
283 return (ERR_MALLOC);
284 }
285 sprintf(tmpname, "%s.tmp", filename);
286 rf = fopen(filename, "r");
287 if (rf == NULL) {
288 return (ERR_READ);
289 }
290 wf = fopen(tmpname, "w");
291 if (wf == NULL) {
292 return (ERR_WRITE);
293 }
294 err = -1;
295 while (fgets(line, sizeof (line), rf)) {
296 if (err < 0 && match(line, name)) {
297 switch (op) {
298 case YPOP_INSERT:
299 err = ERR_KEY;
300 break;
301 case YPOP_STORE:
302 case YPOP_CHANGE:
303 fprintf(wf, "%s %s\n", key, data);
304 err = 0;
305 break;
306 case YPOP_DELETE:
307 /* do nothing */
308 err = 0;
309 break;
310 }
311 } else {
312 fputs(line, wf);
313 }
314 }
315 if (err < 0) {
316 switch (op) {
317 case YPOP_CHANGE:
318 case YPOP_DELETE:
319 err = ERR_KEY;
320 break;
321 case YPOP_INSERT:
322 case YPOP_STORE:
323 err = 0;
324 fprintf(wf, "%s %s\n", key, data);
325 break;
326 }
327 }
328 fclose(wf);
329 fclose(rf);
330 if (err == 0) {
331 if (rename(tmpname, filename) < 0) {
332 return (ERR_DBASE);
333 }
334 } else {
335 if (unlink(tmpname) < 0) {
336 return (ERR_DBASE);
337 }
338 }
339 return (err);
340}
341
342static
343match(line, name)
344 char *line;
345 char *name;
346{
347 int len;
348
349 len = strlen(name);
350 return (strncmp(line, name, len) == 0 &&
351 (line[len] == ' ' || line[len] == '\t'));
352}
353#endif /* !YP */
354
|