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
11 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
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
15 * part of Sun Microsystems, Inc. to assist in its use, correction,
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
33 static char sccsid[] = "@(#)update.c 1.2 91/03/11 Copyr 1986 Sun Micro";
38 * Copyright (C) 1986, 1989, Sun Microsystems, Inc.
42 * Administrative tool to add a new user to the publickey database
48 #include <rpc/key_prot.h>
50 #include <rpcsvc/yp_prot.h>
51 #include <rpcsvc/ypclnt.h>
57 #include <sys/resource.h>
58 #include "ypupdated_extern.h"
61 #define MAXMAPNAMELEN 256
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 */
70 static char SHELL[] = "/bin/sh";
71 static char YPDBPATH[]="/var/yp"; /* This is defined but not used! */
72 static char PKMAP[] = "publickey.byname";
73 static char UPDATEFILE[] = "updaters";
74 static char PKFILE[] = "/etc/publickey";
78 static int _openchild(char *, FILE **, FILE **);
81 * Determine if requester is allowed to update the given map,
82 * and update it if so. Returns the yp status, which is zero
83 * if there is no access violation.
86 mapupdate(char *requester, char *mapname, u_int op, u_int keylen, char *key,
87 u_int datalen, char *data)
89 char updater[MAXMAPNAMELEN + 40];
102 printf("%s %s\n", key, data);
104 (void)sprintf(updater, "make -s -f %s/%s %s", YPDBPATH, /* !!! */
105 UPDATEFILE, mapname);
106 pid = _openchild(updater, &childargs, &childrslt);
108 return (YPERR_YPERR);
114 (void)fprintf(childargs, "%s\n", requester);
115 (void)fprintf(childargs, "%u\n", op);
116 (void)fprintf(childargs, "%u\n", keylen);
117 (void)fwrite(key, (int)keylen, 1, childargs);
118 (void)fprintf(childargs, "\n");
119 (void)fprintf(childargs, "%u\n", datalen);
120 (void)fwrite(data, (int)datalen, 1, childargs);
121 (void)fprintf(childargs, "\n");
122 (void)fclose(childargs);
127 (void)fscanf(childrslt, "%d", &yperrno);
128 (void)fclose(childrslt);
132 if (WEXITSTATUS(status) != 0)
134 if (status.w_retcode != 0)
136 return (YPERR_YPERR);
141 * returns pid, or -1 for failure
144 _openchild(char *command, FILE **fto, FILE **ffrom)
153 if (pipe(pdto) < 0) {
156 if (pipe(pdfrom) < 0) {
159 switch (pid = fork()) {
165 * child: read from pdto[0], write into pdfrom[1]
170 (void)dup(pdfrom[1]);
171 getrlimit(RLIMIT_NOFILE, &rl);
172 for (i = rl.rlim_max - 1; i >= 3; i--) {
175 com = malloc((unsigned) strlen(command) + 6);
179 (void)sprintf(com, "exec %s", command);
180 execl(SHELL, basename(SHELL), "-c", com, (char *)NULL);
185 * parent: write into pdto[1], read from pdfrom[0]
187 *fto = fdopen(pdto[1], "w");
188 (void)close(pdto[0]);
189 *ffrom = fdopen(pdfrom[0], "r");
190 (void)close(pdfrom[1]);
196 * error cleanup and return
199 (void)close(pdfrom[0]);
200 (void)close(pdfrom[1]);
202 (void)close(pdto[0]);
203 (void)close(pdto[1]);
213 p = strrchr(path, '/');
223 static int match(char *, char *);
226 * Determine if requester is allowed to update the given map,
227 * and update it if so. Returns the status, which is zero
228 * if there is no access violation. This function updates
229 * the local file and then shuts up.
232 localupdate(char *name, char *filename, u_int op, u_int keylen __unused,
233 char *key, u_int datalen __unused, char *data)
244 if (strcmp(name, key) != 0) {
247 if (strcmp(name, "nobody") == 0) {
249 * Can't change "nobody"s key.
257 tmpname = malloc(strlen(filename) + 4);
258 if (tmpname == NULL) {
261 sprintf(tmpname, "%s.tmp", filename);
262 rf = fopen(filename, "r");
267 wf = fopen(tmpname, "w");
274 while (fgets(line, sizeof (line), rf)) {
275 if (err < 0 && match(line, name)) {
282 fprintf(wf, "%s %s\n", key, data);
303 fprintf(wf, "%s %s\n", key, data);
310 if (rename(tmpname, filename) < 0) {
315 if (unlink(tmpname) < 0) {
326 match(char *line, char *name)
331 return (strncmp(line, name, len) == 0 &&
332 (line[len] == ' ' || line[len] == '\t'));