2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
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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.bin/newkey/update.c,v 1.5 1999/08/28 01:04:35 peter Exp $
32 * $DragonFly: src/usr.bin/newkey/update.c,v 1.4 2005/01/11 00:29:12 joerg Exp $
36 * Copyright (C) 1986, 1989, Sun Microsystems, Inc.
40 * Administrative tool to add a new user to the publickey database
42 #include <sys/types.h>
44 #include <sys/resource.h>
52 #include <rpc/key_prot.h>
54 #include <rpcsvc/yp_prot.h>
55 #include <rpcsvc/ypclnt.h>
63 #define MAXMAPNAMELEN 256
65 #define YPOP_CHANGE 1 /* change, do not add */
66 #define YPOP_INSERT 2 /* add, do not change */
67 #define YPOP_DELETE 3 /* delete this entry */
68 #define YPOP_STORE 4 /* add, or change */
72 static char *basename(char *);
73 static char SHELL[] = "/bin/sh";
74 static char YPDBPATH[]="/var/yp"; /* This is defined but not used! */
75 static char UPDATEFILE[] = "updaters";
79 static int _openchild(char *, FILE **, FILE ** );
82 * Determine if requester is allowed to update the given map,
83 * and update it if so. Returns the yp status, which is zero
84 * if there is no access violation.
87 mapupdate(char *requester, char *mapname, u_int op, u_int keylen, char *key,
88 u_int datalen, char *data)
90 char updater[MAXMAPNAMELEN + 40];
103 printf("%s %s\n", key, data);
105 (void)sprintf(updater, "make -s -f %s/%s %s", YPDBPATH, /* !!! */
106 UPDATEFILE, mapname);
107 pid = _openchild(updater, &childargs, &childrslt);
109 return (YPERR_YPERR);
115 (void)fprintf(childargs, "%s\n", requester);
116 (void)fprintf(childargs, "%u\n", op);
117 (void)fprintf(childargs, "%u\n", keylen);
118 (void)fwrite(key, (int)keylen, 1, childargs);
119 (void)fprintf(childargs, "\n");
120 (void)fprintf(childargs, "%u\n", datalen);
121 (void)fwrite(data, (int)datalen, 1, childargs);
122 (void)fprintf(childargs, "\n");
123 (void)fclose(childargs);
128 (void)fscanf(childrslt, "%d", &yperrno);
129 (void)fclose(childrslt);
133 if (WEXITSTATUS(status) != 0) {
135 if (status.w_retcode != 0) {
137 return (YPERR_YPERR);
143 * returns pid, or -1 for failure
146 _openchild(char *command, FILE **fto, FILE **ffrom)
155 if (pipe(pdto) < 0) {
158 if (pipe(pdfrom) < 0) {
161 switch (pid = fork()) {
167 * child: read from pdto[0], write into pdfrom[1]
172 (void)dup(pdfrom[1]);
173 getrlimit(RLIMIT_NOFILE, &rl);
174 for (i = rl.rlim_max - 1; i >= 3; i--) {
177 com = malloc((unsigned) strlen(command) + 6);
181 (void)sprintf(com, "exec %s", command);
182 execl(SHELL, basename(SHELL), "-c", com, NULL);
187 * parent: write into pdto[1], read from pdfrom[0]
189 *fto = fdopen(pdto[1], "w");
190 (void)close(pdto[0]);
191 *ffrom = fdopen(pdfrom[0], "r");
192 (void)close(pdfrom[1]);
198 * error cleanup and return
201 (void)close(pdfrom[0]);
202 (void)close(pdfrom[1]);
204 (void)close(pdto[0]);
205 (void)close(pdto[1]);
215 p = strrchr(path, '/');
232 static int match( char * , char * );
235 * Determine if requester is allowed to update the given map,
236 * and update it if so. Returns the status, which is zero
237 * if there is no access violation. This function updates
238 * the local file and then shuts up.
241 localupdate(char *name, char *filename, u_int op, char *key, char *data)
252 if (strcmp(name, key) != 0) {
255 if (strcmp(name, "nobody") == 0) {
257 * Can't change "nobody"s key.
265 tmpname = malloc(strlen(filename) + 4);
266 if (tmpname == NULL) {
269 sprintf(tmpname, "%s.tmp", filename);
270 rf = fopen(filename, "r");
274 wf = fopen(tmpname, "w");
279 while (fgets(line, sizeof (line), rf)) {
280 if (err < 0 && match(line, name)) {
287 fprintf(wf, "%s %s\n", key, data);
308 fprintf(wf, "%s %s\n", key, data);
315 if (rename(tmpname, filename) < 0) {
319 if (unlink(tmpname) < 0) {
327 match(char *line, char *name)
332 return (strncmp(line, name, len) == 0 &&
333 (line[len] == ' ' || line[len] == '\t'));