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
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10 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
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12 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
14 * Sun RPC is provided with no support and without any obligation on the
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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.
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.
26 * Sun Microsystems, Inc.
28 * Mountain View, California 94043
30 * @(#)update.c 1.2 91/03/11 Copyr 1986 Sun Micro
31 * $FreeBSD: src/usr.sbin/rpc.ypupdated/update.c,v 1.4.2.1 2002/02/15 00:46:57 des Exp $
32 * $DragonFly: src/usr.sbin/rpc.ypupdated/update.c,v 1.2 2003/06/17 04:30:02 dillon Exp $
36 * Copyright (C) 1986, 1989, Sun Microsystems, Inc.
40 * Administrative tool to add a new user to the publickey database
46 #include <rpc/key_prot.h>
48 #include <rpcsvc/yp_prot.h>
49 #include <rpcsvc/ypclnt.h>
55 #include <sys/resource.h>
57 #include "ypupdated_extern.h"
60 #define MAXMAPNAMELEN 256
62 #define YPOP_CHANGE 1 /* change, do not add */
63 #define YPOP_INSERT 2 /* add, do not change */
64 #define YPOP_DELETE 3 /* delete this entry */
65 #define YPOP_STORE 4 /* add, or change */
69 static char SHELL[] = "/bin/sh";
70 static char YPDBPATH[]="/var/yp"; /* This is defined but not used! */
71 static char PKMAP[] = "publickey.byname";
72 static char UPDATEFILE[] = "updaters";
73 static char PKFILE[] = "/etc/publickey";
77 static int _openchild(char *, FILE **, FILE **);
80 * Determine if requester is allowed to update the given map,
81 * and update it if so. Returns the yp status, which is zero
82 * if there is no access violation.
84 mapupdate(requester, mapname, op, keylen, key, datalen, data)
93 char updater[MAXMAPNAMELEN + 40];
106 printf("%s %s\n", key, data);
108 (void)sprintf(updater, "make -s -f %s/%s %s", YPDBPATH, /* !!! */
109 UPDATEFILE, mapname);
110 pid = _openchild(updater, &childargs, &childrslt);
112 return (YPERR_YPERR);
118 (void)fprintf(childargs, "%s\n", requester);
119 (void)fprintf(childargs, "%u\n", op);
120 (void)fprintf(childargs, "%u\n", keylen);
121 (void)fwrite(key, (int)keylen, 1, childargs);
122 (void)fprintf(childargs, "\n");
123 (void)fprintf(childargs, "%u\n", datalen);
124 (void)fwrite(data, (int)datalen, 1, childargs);
125 (void)fprintf(childargs, "\n");
126 (void)fclose(childargs);
131 (void)fscanf(childrslt, "%d", &yperrno);
132 (void)fclose(childrslt);
136 if (WEXITSTATUS(status) != 0) {
138 if (status.w_retcode != 0) {
140 return (YPERR_YPERR);
146 * returns pid, or -1 for failure
149 _openchild(command, fto, ffrom)
161 if (pipe(pdto) < 0) {
164 if (pipe(pdfrom) < 0) {
168 switch (pid = vfork()) {
170 switch (pid = fork()) {
177 * child: read from pdto[0], write into pdfrom[1]
182 (void)dup(pdfrom[1]);
183 getrlimit(RLIMIT_NOFILE, &rl);
184 for (i = rl.rlim_max - 1; i >= 3; i--) {
187 com = malloc((unsigned) strlen(command) + 6);
191 (void)sprintf(com, "exec %s", command);
192 execl(SHELL, basename(SHELL), "-c", com, NULL);
197 * parent: write into pdto[1], read from pdfrom[0]
199 *fto = fdopen(pdto[1], "w");
200 (void)close(pdto[0]);
201 *ffrom = fdopen(pdfrom[0], "r");
202 (void)close(pdfrom[1]);
208 * error cleanup and return
211 (void)close(pdfrom[0]);
212 (void)close(pdfrom[1]);
214 (void)close(pdto[0]);
215 (void)close(pdto[1]);
226 p = strrchr(path, '/');
243 extern char *malloc();
246 static int match(char *, char *);
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.
255 localupdate(name, filename, op, keylen, key, datalen, data)
256 char *name; /* Name of the requestor */
259 u_int keylen; /* Not used */
261 u_int datalen; /* Not used */
273 if (strcmp(name, key) != 0) {
276 if (strcmp(name, "nobody") == 0) {
278 * Can't change "nobody"s key.
286 tmpname = malloc(strlen(filename) + 4);
287 if (tmpname == NULL) {
290 sprintf(tmpname, "%s.tmp", filename);
291 rf = fopen(filename, "r");
295 wf = fopen(tmpname, "w");
300 while (fgets(line, sizeof (line), rf)) {
301 if (err < 0 && match(line, name)) {
308 fprintf(wf, "%s %s\n", key, data);
329 fprintf(wf, "%s %s\n", key, data);
336 if (rename(tmpname, filename) < 0) {
340 if (unlink(tmpname) < 0) {
355 return (strncmp(line, name, len) == 0 &&
356 (line[len] == ' ' || line[len] == '\t'));