X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=libbb%2Flogin.c;h=6ebb9a6a0c577250207a9e5a4ac51ba16ee825a8;hb=7154b99c89f9598cafc0044008fe61eb202099dc;hp=2d6162564ec12b71849290d27b000ea3056d40d9;hpb=081d6d4380968dcbe90f66e31ba51ecce100998a;p=oweals%2Fbusybox.git

diff --git a/libbb/login.c b/libbb/login.c
index 2d6162564..6ebb9a6a0 100644
--- a/libbb/login.c
+++ b/libbb/login.c
@@ -1,23 +1,12 @@
+/* vi: set sw=4 ts=4: */
 /*
  * issue.c: issue printing code
  *
  * Copyright (C) 2003 Bastian Blank <waldi@tuxbox.org>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- *
  * Optimize and correcting OCRNL by Vladimir Oleynik <dzo@simtreas.ru>
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
  */
 
 #include <sys/param.h>  /* MAXHOSTNAMELEN */
@@ -37,7 +26,7 @@ void print_login_issue(const char *issue_file, const char *tty)
 {
 	FILE *fd;
 	int c;
-	char buf[256];
+	char buf[256+1];
 	const char *outbuf;
 	time_t t;
 	struct utsname uts;
@@ -47,83 +36,70 @@ void print_login_issue(const char *issue_file, const char *tty)
 
 	puts("\r");	/* start a new line */
 
-	if ((fd = fopen(issue_file, "r"))) {
-		while ((c = fgetc(fd)) != EOF) {
-			outbuf = buf;
-			buf[0] = c;
-			if(c == '\n') {
-				buf[1] = '\r';
-				buf[2] = 0;
-			} else {
-				buf[1] = 0;
-			}
-			if (c == '\\' || c == '%') {
-				c = fgetc(fd);
-				switch (c) {
-					case 's':
-						outbuf = uts.sysname;
-						break;
-
-					case 'n':
-						outbuf = uts.nodename;
-						break;
-
-					case 'r':
-						outbuf = uts.release;
-						break;
-
-					case 'v':
-						outbuf = uts.version;
-						break;
-
-					case 'm':
-						outbuf = uts.machine;
-						break;
-
-					case 'D':
-					case 'o':
-						getdomainname(buf, sizeof(buf));
-						buf[sizeof(buf) - 1] = '\0';
-						break;
-
-					case 'd':
-						strftime(buf, sizeof(buf), fmtstr_d, localtime(&t));
-						break;
-
-					case 't':
-						strftime(buf, sizeof(buf), fmtstr_t, localtime(&t));
-						break;
-
-					case 'h':
-						gethostname(buf, sizeof(buf) - 1);
-						buf[sizeof(buf) - 1] = '\0';
-						break;
-
-					case 'l':
-						outbuf = tty;
-						break;
-
-					default:
-						buf[0] = c;
-				}
+	fd = fopen(issue_file, "r");
+	if (!fd)
+		return;
+	while ((c = fgetc(fd)) != EOF) {
+		outbuf = buf;
+		buf[0] = c;
+		buf[1] = '\0';
+		if(c == '\n') {
+			buf[1] = '\r';
+			buf[2] = '\0';
+		}
+		if (c == '\\' || c == '%') {
+			c = fgetc(fd);
+			switch (c) {
+			case 's':
+				outbuf = uts.sysname;
+				break;
+			case 'n':
+				outbuf = uts.nodename;
+				break;
+			case 'r':
+				outbuf = uts.release;
+				break;
+			case 'v':
+				outbuf = uts.version;
+				break;
+			case 'm':
+				outbuf = uts.machine;
+				break;
+			case 'D':
+			case 'o':
+				c = getdomainname(buf, sizeof(buf) - 1);
+				buf[c >= 0 ? c : 0] = '\0';
+				break;
+			case 'd':
+				strftime(buf, sizeof(buf), fmtstr_d, localtime(&t));
+				break;
+			case 't':
+				strftime(buf, sizeof(buf), fmtstr_t, localtime(&t));
+				break;
+			case 'h':
+				gethostname(buf, sizeof(buf) - 1);
+				buf[sizeof(buf) - 1] = '\0';
+				break;
+			case 'l':
+				outbuf = tty;
+				break;
+			default:
+				buf[0] = c;
 			}
-			fputs(outbuf, stdout);
 		}
-
-		fclose(fd);
-
-		fflush(stdout);
+		fputs(outbuf, stdout);
 	}
+	fclose(fd);
+	fflush(stdout);
 }
 
 void print_login_prompt(void)
 {
 	char buf[MAXHOSTNAMELEN+1];
 
-	gethostname(buf, MAXHOSTNAMELEN);
-	fputs(buf, stdout);
+	if (gethostname(buf, MAXHOSTNAMELEN) == 0)
+		fputs(buf, stdout);
 
 	fputs(LOGIN, stdout);
 	fflush(stdout);
 }
-