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
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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
24 * Sun has been advised of the possibility of such damages.
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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 1.3 2003/10/04 20:36:49 hmp Exp $
36 * Copyright (C) 1986, 1989, Sun Microsystems, Inc.
40 * 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>
55 #include <sys/resource.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 *basename();
68 static char SHELL[] = "/bin/sh";
69 static char YPDBPATH[]="/var/yp"; /* This is defined but not used! */
70 static char PKMAP[] = "publickey.byname";
71 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(char *requester, char *mapname, u_int op, u_int keylen, char *key,
85 u_int datalen, char *data)
87 char updater[MAXMAPNAMELEN + 40];
100 printf("%s %s\n", key, data);
102 (void)sprintf(updater, "make -s -f %s/%s %s", YPDBPATH, /* !!! */
103 UPDATEFILE, mapname);
104 pid = _openchild(updater, &childargs, &childrslt);
106 return (YPERR_YPERR);
112 (void)fprintf(childargs, "%s\n", requester);
113 (void)fprintf(childargs, "%u\n", op);
114 (void)fprintf(childargs, "%u\n", keylen);
115 (void)fwrite(key, (int)keylen, 1, childargs);
116 (void)fprintf(childargs, "\n");
117 (void)fprintf(childargs, "%u\n", datalen);
118 (void)fwrite(data, (int)datalen, 1, childargs);
119 (void)fprintf(childargs, "\n");
120 (void)fclose(childargs);
125 (void)fscanf(childrslt, "%d", &yperrno);
126 (void)fclose(childrslt);
130 if (WEXITSTATUS(status) != 0) {
132 if (status.w_retcode != 0) {
134 return (YPERR_YPERR);
140 * returns pid, or -1 for failure
143 _openchild(char *command, FILE **fto, FILE **ffrom)
152 if (pipe(pdto) < 0) {
155 if (pipe(pdfrom) < 0) {
158 switch (pid = fork()) {
164 * child: read from pdto[0], write into pdfrom[1]
169 (void)dup(pdfrom[1]);
170 getrlimit(RLIMIT_NOFILE, &rl);
171 for (i = rl.rlim_max - 1; i >= 3; i--) {
174 com = malloc((unsigned) strlen(command) + 6);
178 (void)sprintf(com, "exec %s", command);
179 execl(SHELL, basename(SHELL), "-c", com, NULL);
184 * parent: write into pdto[1], read from pdfrom[0]
186 *fto = fdopen(pdto[1], "w");
187 (void)close(pdto[0]);
188 *ffrom = fdopen(pdfrom[0], "r");
189 (void)close(pdfrom[1]);
195 * error cleanup and return
198 (void)close(pdfrom[0]);
199 (void)close(pdfrom[1]);
201 (void)close(pdto[0]);
202 (void)close(pdto[1]);
213 p = strrchr(path, '/');
230 static int match( char * , char * );
233 * Determine if requester is allowed to update the given map,
234 * and update it if so. Returns the status, which is zero
235 * if there is no access violation. This function updates
236 * the local file and then shuts up.
238 localupdate(char *name, /* Name of the requestor */
239 char *filename, u_int op,
240 u_int keylen, /* Not used */
242 u_int datalen, /* Not used */
254 if (strcmp(name, key) != 0) {
257 if (strcmp(name, "nobody") == 0) {
259 * Can't change "nobody"s key.
267 tmpname = malloc(strlen(filename) + 4);
268 if (tmpname == NULL) {
271 sprintf(tmpname, "%s.tmp", filename);
272 rf = fopen(filename, "r");
276 wf = fopen(tmpname, "w");
281 while (fgets(line, sizeof (line), rf)) {
282 if (err < 0 && match(line, name)) {
289 fprintf(wf, "%s %s\n", key, data);
310 fprintf(wf, "%s %s\n", key, data);
317 if (rename(tmpname, filename) < 0) {
321 if (unlink(tmpname) < 0) {
329 match(char *line, char *name)
334 return (strncmp(line, name, len) == 0 &&
335 (line[len] == ' ' || line[len] == '\t'));