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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20 * OR ANY PART THEREOF.
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28 * Mountain View, California 94043
32 * Copyright (C) 1986, 1989, Sun Microsystems, Inc.
36 * Administrative tool to add a new user to the publickey database
42 #include <rpc/key_prot.h>
44 #include <rpcsvc/yp_prot.h>
45 #include <rpcsvc/ypclnt.h>
51 #include <sys/resource.h>
52 #include "ypupdated_extern.h"
55 #define MAXMAPNAMELEN 256
57 #define YPOP_CHANGE 1 /* change, do not add */
58 #define YPOP_INSERT 2 /* add, do not change */
59 #define YPOP_DELETE 3 /* delete this entry */
60 #define YPOP_STORE 4 /* add, or change */
64 static char SHELL[] = "/bin/sh";
65 static char YPDBPATH[]="/var/yp"; /* This is defined but not used! */
66 static char PKMAP[] = "publickey.byname";
67 static char UPDATEFILE[] = "updaters";
68 static char PKFILE[] = "/etc/publickey";
72 static int _openchild(char *, FILE **, FILE **);
75 * Determine if requester is allowed to update the given map,
76 * and update it if so. Returns the yp status, which is zero
77 * if there is no access violation.
80 mapupdate(char *requester, char *mapname, u_int op, u_int keylen, char *key,
81 u_int datalen, char *data)
83 char updater[MAXMAPNAMELEN + 40];
96 printf("%s %s\n", key, data);
98 (void)sprintf(updater, "make -s -f %s/%s %s", YPDBPATH, /* !!! */
100 pid = _openchild(updater, &childargs, &childrslt);
102 return (YPERR_YPERR);
108 (void)fprintf(childargs, "%s\n", requester);
109 (void)fprintf(childargs, "%u\n", op);
110 (void)fprintf(childargs, "%u\n", keylen);
111 (void)fwrite(key, (int)keylen, 1, childargs);
112 (void)fprintf(childargs, "\n");
113 (void)fprintf(childargs, "%u\n", datalen);
114 (void)fwrite(data, (int)datalen, 1, childargs);
115 (void)fprintf(childargs, "\n");
116 (void)fclose(childargs);
121 (void)fscanf(childrslt, "%d", &yperrno);
122 (void)fclose(childrslt);
126 if (WEXITSTATUS(status) != 0)
128 if (status.w_retcode != 0)
130 return (YPERR_YPERR);
135 * returns pid, or -1 for failure
138 _openchild(char *command, FILE **fto, FILE **ffrom)
147 if (pipe(pdto) < 0) {
150 if (pipe(pdfrom) < 0) {
153 switch (pid = fork()) {
159 * child: read from pdto[0], write into pdfrom[1]
164 (void)dup(pdfrom[1]);
165 getrlimit(RLIMIT_NOFILE, &rl);
166 for (i = rl.rlim_max - 1; i >= 3; i--) {
169 com = malloc((unsigned) strlen(command) + 6);
173 (void)sprintf(com, "exec %s", command);
174 execl(SHELL, basename(SHELL), "-c", com, (char *)NULL);
179 * parent: write into pdto[1], read from pdfrom[0]
181 *fto = fdopen(pdto[1], "w");
182 (void)close(pdto[0]);
183 *ffrom = fdopen(pdfrom[0], "r");
184 (void)close(pdfrom[1]);
190 * error cleanup and return
193 (void)close(pdfrom[0]);
194 (void)close(pdfrom[1]);
196 (void)close(pdto[0]);
197 (void)close(pdto[1]);
207 p = strrchr(path, '/');
217 static int match(char *, char *);
220 * Determine if requester is allowed to update the given map,
221 * and update it if so. Returns the status, which is zero
222 * if there is no access violation. This function updates
223 * the local file and then shuts up.
226 localupdate(char *name, char *filename, u_int op, u_int keylen __unused,
227 char *key, u_int datalen __unused, char *data)
238 if (strcmp(name, key) != 0) {
241 if (strcmp(name, "nobody") == 0) {
243 * Can't change "nobody"s key.
251 tmpname = malloc(strlen(filename) + 4);
252 if (tmpname == NULL) {
255 sprintf(tmpname, "%s.tmp", filename);
256 rf = fopen(filename, "r");
261 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) {
309 if (unlink(tmpname) < 0) {
320 match(char *line, char *name)
325 return (strncmp(line, name, len) == 0 &&
326 (line[len] == ' ' || line[len] == '\t'));