Move password-querying (util-version) routines to grub-core/osdep.

grub-core/osdep/unix/password.c

@@ -0,0 +1,66 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2006
+ *                2007, 2008, 2009, 2010, 2011, 2012, 2013  Free Software Foundation, Inc.
+ *
+ *  GRUB 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 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB 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 GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/crypto.h>
+#include <grub/mm.h>
+#include <grub/term.h>
+
+#include <termios.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+
+int
+grub_password_get (char buf[], unsigned buf_size)
+{
+  FILE *in;
+  struct termios s, t;
+  int tty_changed = 0;
+  char *ptr;
+
+  grub_refresh ();
+
+  /* Disable echoing. Based on glibc.  */
+  in = fopen ("/dev/tty", "w+c");
+  if (in == NULL)
+    in = stdin;
+
+  if (tcgetattr (fileno (in), &t) == 0)
+    {
+      /* Save the old one. */
+      s = t;
+      /* Tricky, tricky. */
+      t.c_lflag &= ~(ECHO|ISIG);
+      tty_changed = (tcsetattr (fileno (in), TCSAFLUSH, &t) == 0);
+    }
+  else
+    tty_changed = 0;
+  fgets (buf, buf_size, stdin);
+  ptr = buf + strlen (buf) - 1;
+  while (buf <= ptr && (*ptr == '\n' || *ptr == '\r'))
+    *ptr-- = 0;
+  /* Restore the original setting.  */
+  if (tty_changed)
+    (void) tcsetattr (fileno (in), TCSAFLUSH, &s);
+
+  grub_xputs ("\n");
+  grub_refresh ();
+
+  return 1;
+}