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
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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.
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23 * or profits or other special, indirect and consequential damages, even if
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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 1.8 2007/02/15 02:45:14 trhodes Exp $
35 * Copyright (C) 1986, 1989, Sun Microsystems, Inc.
39 * Administrative tool to add a new user to the publickey database
45 #include <rpc/key_prot.h>
47 #include <rpcsvc/yp_prot.h>
48 #include <rpcsvc/ypclnt.h>
54 #include <sys/resource.h>
55 #include "ypupdated_extern.h"
58 #define MAXMAPNAMELEN 256
60 #define YPOP_CHANGE 1 /* change, do not add */
61 #define YPOP_INSERT 2 /* add, do not change */
62 #define YPOP_DELETE 3 /* delete this entry */
63 #define YPOP_STORE 4 /* add, or change */
67 static char SHELL[] = "/bin/sh";
68 static char YPDBPATH[]="/var/yp"; /* This is defined but not used! */
69 static char PKMAP[] = "publickey.byname";
70 static char UPDATEFILE[] = "updaters";
71 static char PKFILE[] = "/etc/publickey";
75 static int _openchild(char *, FILE **, FILE **);
78 * Determine if requester is allowed to update the given map,
79 * and update it if so. Returns the yp status, which is zero
80 * if there is no access violation.
83 mapupdate(char *requester, char *mapname, u_int op, u_int keylen, char *key,
84 u_int datalen, char *data)
86 char updater[MAXMAPNAMELEN + 40];
99 printf("%s %s\n", key, data);
101 sprintf(updater, "make -s -f %s/%s %s", YPDBPATH, /* !!! */
102 UPDATEFILE, mapname);
103 pid = _openchild(updater, &childargs, &childrslt);
105 return (YPERR_YPERR);
111 fprintf(childargs, "%s\n", requester);
112 fprintf(childargs, "%u\n", op);
113 fprintf(childargs, "%u\n", keylen);
114 fwrite(key, (int)keylen, 1, childargs);
115 fprintf(childargs, "\n");
116 fprintf(childargs, "%u\n", datalen);
117 fwrite(data, (int)datalen, 1, childargs);
118 fprintf(childargs, "\n");
124 fscanf(childrslt, "%d", &yperrno);
129 if (WEXITSTATUS(status) != 0)
131 if (status.w_retcode != 0)
133 return (YPERR_YPERR);
138 * returns pid, or -1 for failure
141 _openchild(char *command, FILE **fto, FILE **ffrom)
150 if (pipe(pdto) < 0) {
153 if (pipe(pdfrom) < 0) {
156 switch (pid = fork()) {
162 * child: read from pdto[0], write into pdfrom[1]
168 getrlimit(RLIMIT_NOFILE, &rl);
169 for (i = rl.rlim_max - 1; i >= 3; i--) {
172 com = malloc((unsigned) strlen(command) + 6);
176 sprintf(com, "exec %s", command);
177 execl(SHELL, basename(SHELL), "-c", com, NULL);
182 * parent: write into pdto[1], read from pdfrom[0]
184 *fto = fdopen(pdto[1], "w");
186 *ffrom = fdopen(pdfrom[0], "r");
193 * error cleanup and return
210 p = strrchr(path, '/');
220 static int match(char *, char *);
223 * Determine if requester is allowed to update the given map,
224 * and update it if so. Returns the status, which is zero
225 * if there is no access violation. This function updates
226 * the local file and then shuts up.
229 localupdate(char *name, char *filename, u_int op, u_int keylen __unused,
230 char *key, u_int datalen __unused, char *data)
241 if (strcmp(name, key) != 0) {
244 if (strcmp(name, "nobody") == 0) {
246 * Can't change "nobody"s key.
254 tmpname = malloc(strlen(filename) + 4);
255 if (tmpname == NULL) {
258 sprintf(tmpname, "%s.tmp", filename);
259 rf = fopen(filename, "r");
263 wf = fopen(tmpname, "w");
268 while (fgets(line, sizeof (line), rf)) {
269 if (err < 0 && match(line, name)) {
276 fprintf(wf, "%s %s\n", key, data);
297 fprintf(wf, "%s %s\n", key, data);
304 if (rename(tmpname, filename) < 0) {
308 if (unlink(tmpname) < 0) {
316 match(char *line, char *name)
321 return (strncmp(line, name, len) == 0 &&
322 (line[len] == ' ' || line[len] == '\t'));