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
7 * program developed by the user or with the express written consent of
8 * Sun Microsystems, Inc.
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.
18 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
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 1.8 2007/02/15 02:45:14 trhodes Exp $
32 * $DragonFly: src/usr.sbin/rpc.ypupdated/update.c,v 1.4 2005/11/25 00:32:49 swildner 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.
85 mapupdate(char *requester
, char *mapname
, u_int op
, u_int keylen
, char *key
,
86 u_int datalen
, char *data
)
88 char updater
[MAXMAPNAMELEN
+ 40];
101 printf("%s %s\n", key
, data
);
103 sprintf(updater
, "make -s -f %s/%s %s", YPDBPATH
, /* !!! */
104 UPDATEFILE
, mapname
);
105 pid
= _openchild(updater
, &childargs
, &childrslt
);
107 return (YPERR_YPERR
);
113 fprintf(childargs
, "%s\n", requester
);
114 fprintf(childargs
, "%u\n", op
);
115 fprintf(childargs
, "%u\n", keylen
);
116 fwrite(key
, (int)keylen
, 1, childargs
);
117 fprintf(childargs
, "\n");
118 fprintf(childargs
, "%u\n", datalen
);
119 fwrite(data
, (int)datalen
, 1, childargs
);
120 fprintf(childargs
, "\n");
126 fscanf(childrslt
, "%d", &yperrno
);
131 if (WEXITSTATUS(status
) != 0)
133 if (status
.w_retcode
!= 0)
135 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]
170 getrlimit(RLIMIT_NOFILE
, &rl
);
171 for (i
= rl
.rlim_max
- 1; i
>= 3; i
--) {
174 com
= malloc((unsigned) strlen(command
) + 6);
178 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");
188 *ffrom
= fdopen(pdfrom
[0], "r");
195 * error cleanup and return
212 p
= strrchr(path
, '/');
222 static int match(char *, char *);
225 * Determine if requester is allowed to update the given map,
226 * and update it if so. Returns the status, which is zero
227 * if there is no access violation. This function updates
228 * the local file and then shuts up.
231 localupdate(char *name
, char *filename
, u_int op
, u_int keylen __unused
,
232 char *key
, u_int datalen __unused
, char *data
)
243 if (strcmp(name
, key
) != 0) {
246 if (strcmp(name
, "nobody") == 0) {
248 * Can't change "nobody"s key.
256 tmpname
= malloc(strlen(filename
) + 4);
257 if (tmpname
== NULL
) {
260 sprintf(tmpname
, "%s.tmp", filename
);
261 rf
= fopen(filename
, "r");
265 wf
= fopen(tmpname
, "w");
270 while (fgets(line
, sizeof (line
), rf
)) {
271 if (err
< 0 && match(line
, name
)) {
278 fprintf(wf
, "%s %s\n", key
, data
);
299 fprintf(wf
, "%s %s\n", key
, data
);
306 if (rename(tmpname
, filename
) < 0) {
310 if (unlink(tmpname
) < 0) {
318 match(char *line
, char *name
)
323 return (strncmp(line
, name
, len
) == 0 &&
324 (line
[len
] == ' ' || line
[len
] == '\t'));