From 7008c93ddfa79f36a8538999de532f15d803d8f9 Mon Sep 17 00:00:00 2001
From: Philippe Charnier <charnier@FreeBSD.org>
Date: Fri, 29 Aug 1997 11:56:51 +0000
Subject: [PATCH] Use err(3). Cosmetic in usage(). Delay the compute of
 defaultdomain (from OpenBSD). Obtained from: OpenBSD.

---
 usr.bin/ypwhich/ypwhich.c | 62 ++++++++++++++++++---------------------
 1 file changed, 28 insertions(+), 34 deletions(-)

diff --git a/usr.bin/ypwhich/ypwhich.c b/usr.bin/ypwhich/ypwhich.c
index 401cfadbe81e..e56462775be5 100644
--- a/usr.bin/ypwhich/ypwhich.c
+++ b/usr.bin/ypwhich/ypwhich.c
@@ -27,16 +27,21 @@
  * SUCH DAMAGE.
  */
 
-#ifndef LINT
-static char rcsid[] = "ypwhich.c,v 1.2 1993/05/16 02:49:10 deraadt Exp";
-#endif
+#ifndef lint
+static const char rcsid[] =
+	"$Id$";
+#endif /* not lint */
 
 #include <sys/param.h>
 #include <sys/types.h>
 #include <sys/socket.h>
-#include <stdio.h>
 #include <ctype.h>
+#include <err.h>
 #include <netdb.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
 #include <rpc/rpc.h>
 #include <rpc/xdr.h>
 #include <rpcsvc/yp.h>
@@ -65,11 +70,12 @@ struct ypalias {
 	{ "ethers", "ethers.byname" },
 };
 
+static void
 usage()
 {
-	fprintf(stderr, "Usage:\n");
-	fprintf(stderr, "\typwhich [-d domain] [[-t] -m [mname] | host]\n");
-	fprintf(stderr, "\typwhich -x\n");
+	fprintf(stderr, "%s\n%s\n",
+		"usage: ypwhich [-d domain] [[-t] -m [mname] | host]",
+		"       ypwhich -x");
 	exit(ERR_USAGE);
 }
 
@@ -77,13 +83,13 @@ usage()
 /*
  * Like yp_bind except can query a specific host
  */
+int
 bind_host(dom, sin)
 char *dom;
 struct sockaddr_in *sin;
 {
 	struct hostent *hent = NULL;
 	struct ypbind_resp ypbr;
-	struct dom_binding *ysd;
 	struct timeval tv;
 	CLIENT *client;
 	int sock, r;
@@ -94,8 +100,7 @@ struct sockaddr_in *sin;
 	tv.tv_usec = 0;
 	client = clntudp_create(sin, YPBINDPROG, YPBINDVERS, tv, &sock);
 	if(client==NULL) {
-		fprintf(stderr, "can't clntudp_create: %s\n",
-			yperr_string(YPERR_YPBIND));
+		warnx("can't clntudp_create: %s", yperr_string(YPERR_YPBIND));
 		return YPERR_YPBIND;
 	}
 
@@ -104,13 +109,12 @@ struct sockaddr_in *sin;
 	r = clnt_call(client, YPBINDPROC_DOMAIN,
 		xdr_domainname, &dom, xdr_ypbind_resp, &ypbr, tv);
 	if( r != RPC_SUCCESS) {
-		fprintf(stderr, "can't clnt_call: %s\n",
-			yperr_string(YPERR_YPBIND));
+		warnx("can't clnt_call: %s", yperr_string(YPERR_YPBIND));
 		clnt_destroy(client);
 		return YPERR_YPBIND;
 	} else {
 		if (ypbr.ypbind_status != YPBIND_SUCC_VAL) {
-			fprintf(stderr, "can't yp_bind: Reason: %s\n",
+			warnx("can't yp_bind: reason: %s",
 				ypbinderr_string(ypbr.ypbind_resp_u.ypbind_error));
 			clnt_destroy(client);
 			return r;
@@ -132,18 +136,13 @@ int
 main(argc, argv)
 char **argv;
 {
-	char *domainname, *master, *map;
+	char *domainname = NULL, *master, *map = NULL;
 	struct ypmaplist *ypml, *y;
-	extern char *optarg;
-	extern int optind;
 	struct hostent *hent;
 	struct sockaddr_in sin;
 	int notrans, mode, getmap;
 	int c, r, i;
 
-	yp_get_default_domain(&domainname);
-
-	map = NULL;
 	getmap = notrans = mode = 0;
 	while( (c=getopt(argc, argv, "xd:mt")) != -1)
 		switch(c) {
@@ -166,6 +165,9 @@ char **argv;
 			usage();
 		}
 
+	if(!domainname)
+		yp_get_default_domain(&domainname);
+
 	if(mode==0) {
 		switch(argc-optind) {
 		case 0:
@@ -181,11 +183,8 @@ char **argv;
 			sin.sin_family = AF_INET;
 			if( (sin.sin_addr.s_addr=inet_addr(argv[optind]))==-1) {
 				hent = gethostbyname(argv[optind]);
-				if(!hent) {
-					fprintf(stderr, "ypwhich: host %s unknown\n",
-						argv[optind]);
-					exit(ERR_NOSUCHHOST);
-				}
+				if(!hent)
+					errx(ERR_NOSUCHHOST, "host %s unknown", argv[optind]);
 				bcopy((char *)hent->h_addr_list[0],
 					(char *)&sin.sin_addr, sizeof sin.sin_addr);
 			}
@@ -213,12 +212,10 @@ char **argv;
 			free(master);
 			break;
 		case YPERR_YPBIND:
-			fprintf(stderr, "ypwhich: not running ypbind\n");
-			exit(ERR_NOYPBIND);
+			errx(ERR_NOYPBIND, "not running ypbind");
 		default:
-			fprintf(stderr, "Can't find master for map %s. Reason: %s\n",
+			errx(ERR_NOMASTER, "can't find master for map %s. reason: %s",
 				map, yperr_string(r));
-			exit(ERR_NOMASTER);
 		}
 		exit(0);
 	}
@@ -236,8 +233,7 @@ char **argv;
 				free(master);
 				break;
 			default:
-				fprintf(stderr,
-					"YP: can't find the master of %s: Reason: %s\n",
+				warnx("can't find the master of %s: reason: %s",
 					ypml->map, yperr_string(r));
 				break;
 			}
@@ -246,12 +242,10 @@ char **argv;
 		}
 		break;
 	case YPERR_YPBIND:
-		fprintf(stderr, "ypwhich: not running ypbind\n");
-		exit(ERR_NOYPBIND);
+		errx(ERR_NOYPBIND, "not running ypbind");
 	default:
-		fprintf(stderr, "Can't get map list for domain %s. Reason: %s\n",
+		errx(ERR_NOMASTER, "can't get map list for domain %s. reason: %s",
 			domainname, yperr_string(r));
-		exit(ERR_NOMASTER);
 	}
 	exit(0);
 }