new file

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@1742 ec53bebd-3082-4978-b11e-865c3cabbd6b

appl/login/tty.c

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+/*
+ * Copyright (c) 1995, 1996, 1997 Kungliga Tekniska H<>gskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * All rights reserved.
+ * 
+ * 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 Kungliga Tekniska
+ *      H<>gskolan and its contributors.
+ * 
+ * 4. Neither the name of the Institute 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 INSTITUTE 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 INSTITUTE 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.
+ */
+
+#include "bsd_locl.h"
+
+RCSID("$Id$");
+
+/*
+ * Clean the tty name.  Return a pointer to the cleaned version.
+ */
+
+const char *
+clean_ttyname (const char *tty)
+{
+  const char *res = tty;
+
+  if (strncmp (res, _PATH_DEV, strlen(_PATH_DEV)) == 0)
+    res += strlen(_PATH_DEV);
+  if (strncmp (res, "pty/", 4) == 0)
+    res += 4;
+  if (strncmp (res, "ptym/", 5) == 0)
+    res += 5;
+  return res;
+}
+
+/*
+ * Generate a name usable as an `ut_id', typically without `tty'.
+ */
+
+const char *
+make_id (const char *tty)
+{
+  const char *res = tty;
+  
+  if (strncmp (res, "pts/", 4) == 0)
+    res += 4;
+  if (strncmp (res, "tty", 3) == 0)
+    res += 3;
+  return res;
+}