Libc-320.tar.gz

[apple/libc.git] / stdio / FreeBSD / gets.c

diff --git a/stdio/FreeBSD/gets.c b/stdio/FreeBSD/gets.c
new file mode 100644 (file)
index 0000000..5ef23ab
--- /dev/null
+++ b/stdio/FreeBSD/gets.c
@@ -0,0 +1,81 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *     The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed by the University of
+ *     California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)gets.c     8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: src/lib/libc/stdio/gets.c,v 1.16 2003/01/30 23:32:53 tjr Exp $");
+
+#include "namespace.h"
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/cdefs.h>
+#include "un-namespace.h"
+#include "libc_private.h"
+#include "local.h"
+
+__warn_references(gets, "warning: this program uses gets(), which is unsafe.");
+
+char *
+gets(buf)
+       char *buf;
+{
+       int c;
+       char *s;
+       static int warned;
+       static char w[] =
+           "warning: this program uses gets(), which is unsafe.\n";
+
+       FLOCKFILE(stdin);
+       ORIENT(stdin, -1);
+       if (!warned) {
+               (void) _write(STDERR_FILENO, w, sizeof(w) - 1);
+               warned = 1;
+       }
+       for (s = buf; (c = __sgetc(stdin)) != '\n';)
+               if (c == EOF)
+                       if (s == buf) {
+                               FUNLOCKFILE(stdin);
+                               return (NULL);
+                       } else
+                               break;
+               else
+                       *s++ = c;
+       *s = 0;
+       FUNLOCKFILE(stdin);
+       return (buf);
+}