Line data    Source code

       1             : /* dearmor.c - Armor utility
       2             :  * Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
       3             :  *
       4             :  * This file is part of GnuPG.
       5             :  *
       6             :  * GnuPG is free software; you can redistribute it and/or modify
       7             :  * it under the terms of the GNU General Public License as published by
       8             :  * the Free Software Foundation; either version 3 of the License, or
       9             :  * (at your option) any later version.
      10             :  *
      11             :  * GnuPG is distributed in the hope that it will be useful,
      12             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      13             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      14             :  * GNU General Public License for more details.
      15             :  *
      16             :  * You should have received a copy of the GNU General Public License
      17             :  * along with this program; if not, see <http://www.gnu.org/licenses/>.
      18             :  */
      19             : 
      20             : #include <config.h>
      21             : #include <stdio.h>
      22             : #include <stdlib.h>
      23             : #include <string.h>
      24             : #include <errno.h>
      25             : 
      26             : #include "gpg.h"
      27             : #include "status.h"
      28             : #include "iobuf.h"
      29             : #include "util.h"
      30             : #include "filter.h"
      31             : #include "packet.h"
      32             : #include "options.h"
      33             : #include "main.h"
      34             : #include "i18n.h"
      35             : 
      36             : /****************
      37             :  * Take an armor file and write it out without armor
      38             :  */
      39             : int
      40          36 : dearmor_file( const char *fname )
      41             : {
      42             :     armor_filter_context_t *afx;
      43          36 :     IOBUF inp = NULL, out = NULL;
      44          36 :     int rc = 0;
      45             :     int c;
      46             : 
      47          36 :     afx = new_armor_context ();
      48             : 
      49             :     /* prepare iobufs */
      50          36 :     inp = iobuf_open(fname);
      51          36 :     if (inp && is_secured_file (iobuf_get_fd (inp)))
      52             :       {
      53           0 :         iobuf_close (inp);
      54           0 :         inp = NULL;
      55           0 :         gpg_err_set_errno (EPERM);
      56             :       }
      57          36 :     if (!inp) {
      58           0 :         rc = gpg_error_from_syserror ();
      59           0 :         log_error(_("can't open '%s': %s\n"), fname? fname: "[stdin]",
      60           0 :                                         strerror(errno) );
      61           0 :         goto leave;
      62             :     }
      63             : 
      64          36 :     push_armor_filter ( afx, inp );
      65             : 
      66          36 :     if( (rc = open_outfile (-1, fname, 0, 0, &out)) )
      67           0 :         goto leave;
      68             : 
      69      270808 :     while( (c = iobuf_get(inp)) != -1 )
      70      270736 :         iobuf_put( out, c );
      71             : 
      72             :   leave:
      73          36 :     if( rc )
      74           0 :         iobuf_cancel(out);
      75             :     else
      76          36 :         iobuf_close(out);
      77          36 :     iobuf_close(inp);
      78          36 :     release_armor_context (afx);
      79          36 :     return rc;
      80             : }
      81             : 
      82             : 
      83             : /****************
      84             :  * Take file and write it out with armor
      85             :  */
      86             : int
      87           0 : enarmor_file( const char *fname )
      88             : {
      89             :     armor_filter_context_t *afx;
      90           0 :     IOBUF inp = NULL, out = NULL;
      91           0 :     int rc = 0;
      92             :     int c;
      93             : 
      94           0 :     afx = new_armor_context ();
      95             : 
      96             :     /* prepare iobufs */
      97           0 :     inp = iobuf_open(fname);
      98           0 :     if (inp && is_secured_file (iobuf_get_fd (inp)))
      99             :       {
     100           0 :         iobuf_close (inp);
     101           0 :         inp = NULL;
     102           0 :         gpg_err_set_errno (EPERM);
     103             :       }
     104           0 :     if (!inp) {
     105           0 :         rc = gpg_error_from_syserror ();
     106           0 :         log_error(_("can't open '%s': %s\n"), fname? fname: "[stdin]",
     107           0 :                   strerror(errno) );
     108           0 :         goto leave;
     109             :     }
     110             : 
     111             : 
     112           0 :     if( (rc = open_outfile (-1, fname, 1, 0, &out )) )
     113           0 :         goto leave;
     114             : 
     115           0 :     afx->what = 4;
     116           0 :     afx->hdrlines = "Comment: Use \"gpg --dearmor\" for unpacking\n";
     117           0 :     push_armor_filter ( afx, out );
     118             : 
     119           0 :     while( (c = iobuf_get(inp)) != -1 )
     120           0 :         iobuf_put( out, c );
     121             : 
     122             : 
     123             :   leave:
     124           0 :     if( rc )
     125           0 :         iobuf_cancel(out);
     126             :     else
     127           0 :         iobuf_close(out);
     128           0 :     iobuf_close(inp);
     129           0 :     release_armor_context (afx);
     130           0 :     return rc;
     131             : }