Nontrivial sync from gnulib.

1 files changed, 80 insertions, 71 deletions

diff --git a/lib/getpass.c b/lib/getpass.c
index 7367251e2..f0b3184ee 100644
--- a/lib/getpass.c
+++ b/lib/getpass.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1992-2001, 2003, 2004 Free Software Foundation, Inc.
+/* Copyright (C) 1992-2001, 2003, 2004, 2005 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This program is free software; you can redistribute it and/or modify
@@ -15,47 +15,32 @@
    with this program; if not, write to the Free Software Foundation,
    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
 
-#if HAVE_CONFIG_H
+#ifdef HAVE_CONFIG_H
 # include <config.h>
 #endif
 
-#if !_LIBC
-# include "getpass.h"
-#endif
+#include "getpass.h"
 
-#if _LIBC
-# define HAVE_STDIO_EXT_H 1
-#endif
+#include <stdio.h>
+
+#if !defined _WIN32
 
 #include <stdbool.h>
 
-#include <stdio.h>
 #if HAVE_STDIO_EXT_H
 # include <stdio_ext.h>
-#else
-# define __fsetlocking(stream, type) /* empty */
 #endif
-#if !_LIBC
-# include "getline.h"
+#if !HAVE___FSETLOCKING
+# define __fsetlocking(stream, type)	/* empty */
 #endif
 
-#include <termios.h>
-#include <unistd.h>
-
-#if _LIBC
-# include <wchar.h>
+#if HAVE_TERMIOS_H
+# include <termios.h>
 #endif
 
-#if _LIBC
-# define NOTCANCEL_MODE "c"
-#else
-# define NOTCANCEL_MODE
-#endif
+#include "getline.h"
 
-#if _LIBC
-# define flockfile(s) _IO_flockfile (s)
-# define funlockfile(s) _IO_funlockfile (s)
-#elif USE_UNLOCKED_IO
+#if USE_UNLOCKED_IO
 # include "unlocked-io.h"
 #else
 # if !HAVE_DECL_FFLUSH_UNLOCKED
@@ -80,18 +65,6 @@
 # endif
 #endif
 
-#if _LIBC
-# include <bits/libc-lock.h>
-#else
-# define __libc_cleanup_push(function, arg) /* empty */
-# define __libc_cleanup_pop(execute) /* empty */
-#endif
-
-#if !_LIBC
-# define __getline getline
-# define __tcgetattr tcgetattr
-#endif
-
 /* It is desirable to use this bit on systems that have it.
    The only bit of terminal state we want to twiddle is echoing, which is
    done in software; there is no need to change the state of the terminal
@@ -114,7 +87,7 @@ getpass (const char *prompt)
   FILE *tty;
   FILE *in, *out;
   struct termios s, t;
-  bool tty_changed;
+  bool tty_changed = false;
   static char *buf;
   static size_t bufsize;
   ssize_t nread;
@@ -122,7 +95,7 @@ getpass (const char *prompt)
   /* Try to write to and read from the terminal if we can.
      If we can't open the terminal, use stderr and stdin.  */
 
-  tty = fopen ("/dev/tty", "w+" NOTCANCEL_MODE);
+  tty = fopen ("/dev/tty", "w+");
   if (tty == NULL)
     {
       in = stdin;
@@ -136,39 +109,26 @@ getpass (const char *prompt)
       out = in = tty;
     }
 
-  /* Make sure the stream we opened is closed even if the thread is
-     canceled.  */
-  __libc_cleanup_push (call_fclose, tty);
-
   flockfile (out);
 
   /* Turn echoing off if it is on now.  */
-
-  if (__tcgetattr (fileno (in), &t) == 0)
+#if HAVE_TCGETATTR
+  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|TCSASOFT, &t) == 0);
+      t.c_lflag &= ~(ECHO | ISIG);
+      tty_changed = (tcsetattr (fileno (in), TCSAFLUSH | TCSASOFT, &t) == 0);
     }
-  else
-    tty_changed = false;
+#endif
 
   /* Write the prompt.  */
-#ifdef USE_IN_LIBIO
-  if (_IO_fwide (out, 0) > 0)
-    __fwprintf (out, L"%s", prompt);
-  else
-#endif
-    fputs_unlocked (prompt, out);
+  fputs_unlocked (prompt, out);
   fflush_unlocked (out);
 
   /* Read the password.  */
-  nread = __getline (&buf, &bufsize, in);
-
-#if !_LIBC
-  /* As far as is known, glibc doesn't need this no-op fseek.  */
+  nread = getline (&buf, &bufsize, in);
 
   /* According to the C standard, input may not be followed by output
      on the same stream without an intervening call to a file
@@ -180,7 +140,6 @@ getpass (const char *prompt)
      from POSIX version to POSIX version, so play it safe and invoke
      fseek even if in != out.  */
   fseek (out, 0, SEEK_CUR);
-#endif
 
   if (buf != NULL)
     {
@@ -193,25 +152,75 @@ getpass (const char *prompt)
 	  if (tty_changed)
 	    {
 	      /* Write the newline that was not echoed.  */
-#ifdef USE_IN_LIBIO
-	      if (_IO_fwide (out, 0) > 0)
-		putwc_unlocked (L'\n', out);
-	      else
-#endif
-		putc_unlocked ('\n', out);
+	      putc_unlocked ('\n', out);
 	    }
 	}
     }
 
   /* Restore the original setting.  */
+#if HAVE_TCSETATTR
   if (tty_changed)
-    (void) tcsetattr (fileno (in), TCSAFLUSH|TCSASOFT, &s);
+    tcsetattr (fileno (in), TCSAFLUSH | TCSASOFT, &s);
+#endif
 
   funlockfile (out);
 
-  __libc_cleanup_pop (0);
-
   call_fclose (tty);
 
   return buf;
 }
+
+#else /* WIN32 */
+
+/* Windows implementation by Martin Lambers <marlam@marlam.de>,
+   improved by Simon Josefsson. */
+
+/* For PASS_MAX. */
+#include <limits.h>
+
+#ifndef PASS_MAX
+# define PASS_MAX 512
+#endif
+
+char *
+getpass (const char *prompt)
+{
+  char getpassbuf[PASS_MAX + 1];
+  size_t i = 0;
+  int c;
+
+  if (prompt)
+    {
+      fputs (prompt, stderr);
+      fflush (stderr);
+    }
+
+  for (;;)
+    {
+      c = _getch ();
+      if (c == '\r')
+	{
+	  getpassbuf[i] = '\0';
+	  break;
+	}
+      else if (i < PASS_MAX)
+	{
+	  getpassbuf[i++] = c;
+	}
+
+      if (i >= PASS_MAX)
+	{
+	  getpassbuf[i] = '\0';
+	  break;
+	}
+    }
+
+  if (prompt)
+    {
+      fputs ("\r\n", stderr);
+      fflush (stderr);
+    }
+
+  return strdup (getpassbuf);
+}
+#endif