X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fgetpass.c;h=434b732453c6610417dacca48e2384e43673e6ea;hb=fa1db0dd22768f09a507674a30beb5b8a87bb35f;hp=78f21e01973772a17e9501d5cf4e8d7009fd1d66;hpb=ce44c2c324999ec117e55d5971a4f69137bc3f08;p=gnulib.git

diff --git a/lib/getpass.c b/lib/getpass.c
index 78f21e019..434b73245 100644
--- a/lib/getpass.c
+++ b/lib/getpass.c
@@ -1,4 +1,5 @@
-/* Copyright (C) 1992-2001, 2003, 2004 Free Software Foundation, Inc.
+/* Copyright (C) 1992-2001, 2003-2007, 2009-2013 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
@@ -12,84 +13,65 @@
    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.  */
+   with this program; if not, see <http://www.gnu.org/licenses/>.  */
 
-#if HAVE_CONFIG_H
+#ifndef _LIBC
 # include <config.h>
 #endif
 
-#if !_LIBC
-# include "getpass.h"
-#endif
-
-#if _LIBC
-# define HAVE_STDIO_EXT_H 1
-#endif
-
-#include <stdbool.h>
+#include "getpass.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"
-#endif
-
-#include <termios.h>
-#include <unistd.h>
-
-#if _LIBC
-# include <wchar.h>
-#endif
-
-#if _LIBC
-# define NOTCANCEL_MODE "c"
-#else
-# define NOTCANCEL_MODE
-#endif
 
-#if _LIBC
-# define flockfile(s) _IO_flockfile (s)
-# define funlockfile(s) _IO_funlockfile (s)
-#elif USE_UNLOCKED_IO
-# include "unlocked-io.h"
-#else
-# undef fflush_unlocked
-# define fflush_unlocked(x) fflush (x)
-# undef flockfile
-# define flockfile(x) ((void) 0)
-# undef funlockfile
-# define funlockfile(x) ((void) 0)
-# undef fputs_unlocked
-# define fputs_unlocked(str,stream) fputs (str, stream)
-# undef putc_unlocked
-# define putc_unlocked(c,stream) putc (c, stream)
-#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
+#if !((defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__)
+
+# include <stdbool.h>
+
+# if HAVE_DECL___FSETLOCKING && HAVE___FSETLOCKING
+#  if HAVE_STDIO_EXT_H
+#   include <stdio_ext.h>
+#  endif
+# else
+#  define __fsetlocking(stream, type)    /* empty */
+# endif
+
+# if HAVE_TERMIOS_H
+#  include <termios.h>
+# endif
+
+# if USE_UNLOCKED_IO
+#  include "unlocked-io.h"
+# else
+#  if !HAVE_DECL_FFLUSH_UNLOCKED
+#   undef fflush_unlocked
+#   define fflush_unlocked(x) fflush (x)
+#  endif
+#  if !HAVE_DECL_FLOCKFILE
+#   undef flockfile
+#   define flockfile(x) ((void) 0)
+#  endif
+#  if !HAVE_DECL_FUNLOCKFILE
+#   undef funlockfile
+#   define funlockfile(x) ((void) 0)
+#  endif
+#  if !HAVE_DECL_FPUTS_UNLOCKED
+#   undef fputs_unlocked
+#   define fputs_unlocked(str,stream) fputs (str, stream)
+#  endif
+#  if !HAVE_DECL_PUTC_UNLOCKED
+#   undef putc_unlocked
+#   define putc_unlocked(c,stream) putc (c, stream)
+#  endif
+# 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
    hardware.  */
 
-#ifndef TCSASOFT
-# define TCSASOFT 0
-#endif
+# ifndef TCSASOFT
+#  define TCSASOFT 0
+# endif
 
 static void
 call_fclose (void *arg)
@@ -104,7 +86,7 @@ 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;
@@ -112,7 +94,7 @@ 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;
@@ -126,39 +108,26 @@ 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
@@ -169,39 +138,92 @@ getpass (const char *prompt)
      == fileno (out).  The POSIX restrictions are tricky and change
      from POSIX version to POSIX version, so play it safe and invoke
      fseek even if in != out.  */
-  fseek (out, 0, SEEK_CUR);
-#endif
+  fseeko (out, 0, SEEK_CUR);
 
   if (buf != NULL)
     {
       if (nread < 0)
-	buf[0] = '\0';
+        buf[0] = '\0';
       else if (buf[nread - 1] == '\n')
-	{
-	  /* Remove the newline.  */
-	  buf[nread - 1] = '\0';
-	  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);
-	    }
-	}
+        {
+          /* Remove the newline.  */
+          buf[nread - 1] = '\0';
+          if (tty_changed)
+            {
+              /* Write the newline that was not echoed.  */
+              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 /* W32 native */
+
+/* Windows implementation by Martin Lambers <marlam@marlam.de>,
+   improved by Simon Josefsson. */
+
+/* For PASS_MAX. */
+# include <limits.h>
+/* For _getch(). */
+# include <conio.h>
+/* For strdup(). */
+# include <string.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