1 files changed, 332 insertions, 0 deletions
diff --git a/usr.bin/newkey/update.c b/usr.bin/newkey/update.c
new file mode 100644
index 0000000..11a1db9
--- /dev/null
+++ b/usr.bin/newkey/update.c
@@ -0,0 +1,332 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user or with the express written consent of
+ * Sun Microsystems, Inc.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#ifndef lint
+#if 0
+static	char sccsid[] = "@(#)update.c 1.2 91/03/11 Copyr 1986 Sun Micro";
+#endif
+#endif
+
+/*
+ * Copyright (C) 1986, 1989, Sun Microsystems, Inc.
+ */
+
+/*
+ * Administrative tool to add a new user to the publickey database
+ */
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+
+#include <rpc/rpc.h>
+#include <rpc/key_prot.h>
+
+#ifdef YP
+#include <sys/wait.h>
+#include <rpcsvc/yp_prot.h>
+#include <rpcsvc/ypclnt.h>
+#include <netdb.h>
+#endif	/* YP */
+
+#include <pwd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "extern.h"
+
+#ifdef YP
+static char SHELL[] = "/bin/sh";
+static char YPDBPATH[]="/var/yp";	/* This is defined but not used! */
+static char UPDATEFILE[] = "updaters";
+
+static int _openchild(char *, FILE **, FILE **);
+static char *basename(char *path);
+
+/*
+ * Determine if requester is allowed to update the given map,
+ * and update it if so. Returns the yp status, which is zero
+ * if there is no access violation.
+ */
+int
+mapupdate(char *requester, char *mapname, u_int op, u_int keylen,
+    char *key, u_int datalen, char *data)
+{
+	char updater[MAXMAPNAMELEN + 40];
+	FILE *childargs;
+	FILE *childrslt;
+#ifdef WEXITSTATUS
+	int status;
+#else
+	union wait status;
+#endif
+	pid_t pid;
+	u_int yperrno;
+
+
+#ifdef DEBUG
+	printf("%s %s\n", key, data);
+#endif
+	(void)sprintf(updater, "make -s -f %s/%s %s", YPDBPATH, /* !!! */
+					UPDATEFILE, mapname);
+	pid = _openchild(updater, &childargs, &childrslt);
+	if (pid < 0) {
+		return (YPERR_YPERR);
+	}
+
+	/*
+	 * Write to child
+	 */
+	(void)fprintf(childargs, "%s\n", requester);
+	(void)fprintf(childargs, "%u\n", op);
+	(void)fprintf(childargs, "%u\n", keylen);
+	(void)fwrite(key, (int)keylen, 1, childargs);
+	(void)fprintf(childargs, "\n");
+	(void)fprintf(childargs, "%u\n", datalen);
+	(void)fwrite(data, (int)datalen, 1, childargs);
+	(void)fprintf(childargs, "\n");
+	(void)fclose(childargs);
+
+	/*
+	 * Read from child
+	 */
+	(void)fscanf(childrslt, "%d", &yperrno);
+	(void)fclose(childrslt);
+
+	(void)wait(&status);
+#ifdef WEXITSTATUS
+	if (WEXITSTATUS(status) != 0) {
+#else
+	if (status.w_retcode != 0) {
+#endif
+		return (YPERR_YPERR);
+	}
+	return (yperrno);
+}
+
+/*
+ * returns pid, or -1 for failure
+ */
+static pid_t
+_openchild(char *command, FILE **fto, FILE **ffrom)
+{
+	int i;
+	pid_t pid;
+	int pdto[2];
+	int pdfrom[2];
+	char *com;
+	struct rlimit rl;
+
+	if (pipe(pdto) < 0) {
+		goto error1;
+	}
+	if (pipe(pdfrom) < 0) {
+		goto error2;
+	}
+	switch (pid = fork()) {
+	case -1:
+		goto error3;
+
+	case 0:
+		/*
+		 * child: read from pdto[0], write into pdfrom[1]
+		 */
+		(void)close(0);
+		(void)dup(pdto[0]);
+		(void)close(1);
+		(void)dup(pdfrom[1]);
+		getrlimit(RLIMIT_NOFILE, &rl);
+		for (i = rl.rlim_max - 1; i >= 3; i--) {
+			(void) close(i);
+		}
+		com = malloc((unsigned) strlen(command) + 6);
+		if (com == NULL) {
+			_exit(~0);
+		}
+		(void)sprintf(com, "exec %s", command);
+		execl(SHELL, basename(SHELL), "-c", com, (char *)NULL);
+		_exit(~0);
+
+	default:
+		/*
+		 * parent: write into pdto[1], read from pdfrom[0]
+		 */
+		*fto = fdopen(pdto[1], "w");
+		(void)close(pdto[0]);
+		*ffrom = fdopen(pdfrom[0], "r");
+		(void)close(pdfrom[1]);
+		break;
+	}
+	return (pid);
+
+	/*
+	 * error cleanup and return
+	 */
+error3:
+	(void)close(pdfrom[0]);
+	(void)close(pdfrom[1]);
+error2:
+	(void)close(pdto[0]);
+	(void)close(pdto[1]);
+error1:
+	return (-1);
+}
+
+static char *
+basename(char *path)
+{
+	char *p;
+
+	p = strrchr(path, '/');
+	if (p == NULL) {
+		return (path);
+	} else {
+		return (p + 1);
+	}
+}
+
+#else /* YP */
+
+#define	ERR_ACCESS	1
+#define	ERR_MALLOC	2
+#define	ERR_READ	3
+#define	ERR_WRITE	4
+#define	ERR_DBASE	5
+#define	ERR_KEY		6
+
+static int match(char *, char *);
+
+/*
+ * Determine if requester is allowed to update the given map,
+ * and update it if so. Returns the status, which is zero
+ * if there is no access violation. This function updates
+ * the local file and then shuts up.
+ */
+int
+localupdate(char *name, char *filename, u_int op, u_int keylen __unused,
+    char *key, u_int datalen __unused, char *data)
+{
+	char line[256];
+	FILE *rf;
+	FILE *wf;
+	char *tmpname;
+	int err;
+
+	/*
+	 * Check permission
+	 */
+	if (strcmp(name, key) != 0) {
+		return (ERR_ACCESS);
+	}
+	if (strcmp(name, "nobody") == 0) {
+		/*
+		 * Can't change "nobody"s key.
+		 */
+		return (ERR_ACCESS);
+	}
+
+	/*
+	 * Open files
+	 */
+	tmpname = malloc(strlen(filename) + 4);
+	if (tmpname == NULL) {
+		return (ERR_MALLOC);
+	}
+	sprintf(tmpname, "%s.tmp", filename);
+	rf = fopen(filename, "r");
+	if (rf == NULL) {
+		return (ERR_READ);
+	}
+	wf = fopen(tmpname, "w");
+	if (wf == NULL) {
+		return (ERR_WRITE);
+	}
+	err = -1;
+	while (fgets(line, sizeof (line), rf)) {
+		if (err < 0 && match(line, name)) {
+			switch (op) {
+			case YPOP_INSERT:
+				err = ERR_KEY;
+				break;
+			case YPOP_STORE:
+			case YPOP_CHANGE:
+				fprintf(wf, "%s %s\n", key, data);
+				err = 0;
+				break;
+			case YPOP_DELETE:
+				/* do nothing */
+				err = 0;
+				break;
+			}
+		} else {
+			fputs(line, wf);
+		}
+	}
+	if (err < 0) {
+		switch (op) {
+		case YPOP_CHANGE:
+		case YPOP_DELETE:
+			err = ERR_KEY;
+			break;
+		case YPOP_INSERT:
+		case YPOP_STORE:
+			err = 0;
+			fprintf(wf, "%s %s\n", key, data);
+			break;
+		}
+	}
+	fclose(wf);
+	fclose(rf);
+	if (err == 0) {
+		if (rename(tmpname, filename) < 0) {
+			return (ERR_DBASE);
+		}
+	} else {
+		if (unlink(tmpname) < 0) {
+			return (ERR_DBASE);
+		}
+	}
+	return (err);
+}
+
+static int
+match(char *line, char *name)
+{
+	int len;
+
+	len = strlen(name);
+	return (strncmp(line, name, len) == 0 &&
+		(line[len] == ' ' || line[len] == '\t'));
+}
+#endif /* !YP */