LCOV - code coverage report
Current view: top level - g10 - plaintext.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 152 356 42.7 %
Date: 2016-09-12 13:01:59 Functions: 5 7 71.4 %

          Line data    Source code
       1             : /* plaintext.c -  process plaintext packets
       2             :  * Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
       3             :  *               2006, 2009, 2010 Free Software Foundation, Inc.
       4             :  *
       5             :  * This file is part of GnuPG.
       6             :  *
       7             :  * GnuPG is free software; you can redistribute it and/or modify
       8             :  * it under the terms of the GNU General Public License as published by
       9             :  * the Free Software Foundation; either version 3 of the License, or
      10             :  * (at your option) any later version.
      11             :  *
      12             :  * GnuPG is distributed in the hope that it will be useful,
      13             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      14             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      15             :  * GNU General Public License for more details.
      16             :  *
      17             :  * You should have received a copy of the GNU General Public License
      18             :  * along with this program; if not, see <http://www.gnu.org/licenses/>.
      19             :  */
      20             : 
      21             : #include <config.h>
      22             : #include <stdio.h>
      23             : #include <stdlib.h>
      24             : #include <string.h>
      25             : #include <errno.h>
      26             : #include <sys/types.h>
      27             : #ifdef HAVE_DOSISH_SYSTEM
      28             : # include <fcntl.h> /* for setmode() */
      29             : #endif
      30             : 
      31             : #include "gpg.h"
      32             : #include "util.h"
      33             : #include "options.h"
      34             : #include "packet.h"
      35             : #include "ttyio.h"
      36             : #include "filter.h"
      37             : #include "main.h"
      38             : #include "status.h"
      39             : #include "i18n.h"
      40             : 
      41             : 
      42             : /* Get the output filename.  On success, the actual filename that is
      43             :    used is set in *FNAMEP and a filepointer is returned in *FP.
      44             : 
      45             :    EMBEDDED_NAME AND EMBEDDED_NAMELEN are normally stored in a
      46             :    plaintext packet.  EMBEDDED_NAMELEN should not include any NUL
      47             :    terminator (EMBEDDED_NAME does not need to be NUL terminated).
      48             : 
      49             :    DATA is the iobuf containing the input data.  We just use it to get
      50             :    the input file's filename.
      51             : 
      52             :    On success, the caller is responsible for calling xfree on *FNAMEP
      53             :    and calling es_close on *FPP.  */
      54             : gpg_error_t
      55         560 : get_output_file (const byte *embedded_name, int embedded_namelen,
      56             :                  iobuf_t data, char **fnamep, estream_t *fpp)
      57             : {
      58         560 :   gpg_error_t err = 0;
      59         560 :   char *fname = NULL;
      60         560 :   estream_t fp = NULL;
      61         560 :   int nooutput = 0;
      62             : 
      63             :   /* Create the filename as C string.  */
      64         560 :   if (opt.outfp)
      65             :     {
      66           0 :       fname = xtrystrdup ("[FP]");
      67           0 :       if (!fname)
      68             :         {
      69           0 :           err = gpg_error_from_syserror ();
      70           0 :           goto leave;
      71             :         }
      72             :     }
      73         560 :   else if (opt.outfile)
      74             :     {
      75         560 :       fname = xtrystrdup (opt.outfile);
      76         560 :       if (!fname)
      77             :         {
      78           0 :           err = gpg_error_from_syserror ();
      79           0 :           goto leave;
      80             :         }
      81             :     }
      82           0 :   else if (embedded_namelen == 8 && !memcmp (embedded_name, "_CONSOLE", 8))
      83             :     {
      84           0 :       log_info (_("data not saved; use option \"--output\" to save it\n"));
      85           0 :       nooutput = 1;
      86             :     }
      87           0 :   else if (!opt.flags.use_embedded_filename)
      88             :     {
      89           0 :       if (data)
      90           0 :         fname = make_outfile_name (iobuf_get_real_fname (data));
      91           0 :       if (!fname)
      92           0 :         fname = ask_outfile_name (embedded_name, embedded_namelen);
      93           0 :       if (!fname)
      94             :         {
      95           0 :           err = gpg_error (GPG_ERR_GENERAL);    /* Can't create file. */
      96           0 :           goto leave;
      97             :         }
      98             :     }
      99             :   else
     100           0 :     fname = utf8_to_native (embedded_name, embedded_namelen, 0);
     101             : 
     102         560 :   if (nooutput)
     103             :     ;
     104         560 :   else if (opt.outfp)
     105             :     {
     106           0 :       fp = opt.outfp;
     107           0 :       es_set_binary (fp);
     108             :     }
     109         560 :   else if (iobuf_is_pipe_filename (fname) || !*fname)
     110             :     {
     111             :       /* No filename or "-" given; write to stdout. */
     112          40 :       fp = es_stdout;
     113          40 :       es_set_binary (fp);
     114             :     }
     115             :   else
     116             :     {
     117        1040 :       while (!overwrite_filep (fname))
     118             :         {
     119           0 :           char *tmp = ask_outfile_name (NULL, 0);
     120           0 :           if (!tmp || !*tmp)
     121             :             {
     122           0 :               xfree (tmp);
     123             :               /* FIXME: Below used to be GPG_ERR_CREATE_FILE */
     124           0 :               err = gpg_error (GPG_ERR_GENERAL);
     125           0 :               goto leave;
     126             :             }
     127           0 :           xfree (fname);
     128           0 :           fname = tmp;
     129             :         }
     130             :     }
     131             : 
     132             : #ifndef __riscos__
     133         560 :   if (opt.outfp && is_secured_file (es_fileno (opt.outfp)))
     134             :     {
     135           0 :       err = gpg_error (GPG_ERR_EPERM);
     136           0 :       log_error (_("error creating '%s': %s\n"), fname, gpg_strerror (err));
     137           0 :       goto leave;
     138             :     }
     139         560 :   else if (fp || nooutput)
     140             :     ;
     141         520 :   else if (is_secured_filename (fname))
     142             :     {
     143           0 :       gpg_err_set_errno (EPERM);
     144           0 :       err = gpg_error_from_syserror ();
     145           0 :       log_error (_("error creating '%s': %s\n"), fname, gpg_strerror (err));
     146           0 :       goto leave;
     147             :     }
     148         520 :   else if (!(fp = es_fopen (fname, "wb")))
     149             :     {
     150           0 :       err = gpg_error_from_syserror ();
     151           0 :       log_error (_("error creating '%s': %s\n"), fname, gpg_strerror (err));
     152           0 :       goto leave;
     153             :     }
     154             : #else /* __riscos__ */
     155             :   /* If no output filename was given, i.e. we constructed it, convert
     156             :      all '.' in fname to '/' but not vice versa as we don't create
     157             :      directories! */
     158             :   if (!opt.outfile)
     159             :     for (c = 0; fname[c]; ++c)
     160             :       if (fname[c] == '.')
     161             :         fname[c] = '/';
     162             : 
     163             :   if (fp || nooutput)
     164             :     ;
     165             :   else
     166             :     {
     167             :       /* Note: riscos stuff is not expected to work anymore.  If we
     168             :          want to port it again to riscos we should do most of the suff
     169             :          in estream.  FIXME: Consider to remove all riscos special
     170             :          cases.  */
     171             :       fp = fopen (fname, "wb");
     172             :       if (!fp)
     173             :         {
     174             :           log_error (_("error creating '%s': %s\n"), fname, gpg_strerror (err));
     175             :           err = GPG_ERR_CREATE_FILE;
     176             :           if (errno == 106)
     177             :             log_info ("Do output file and input file have the same name?\n");
     178             :           goto leave;
     179             :         }
     180             : 
     181             :       /* If there's a ,xxx extension in the embedded filename,
     182             :          use that, else check whether the user input (in fname)
     183             :          has a ,xxx appended, then use that in preference */
     184             :       if ((c = riscos_get_filetype_from_string (embedded_name,
     185             :                                                 embedded_namelen)) != -1)
     186             :         filetype = c;
     187             :       if ((c = riscos_get_filetype_from_string (fname, strlen (fname))) != -1)
     188             :         filetype = c;
     189             :       riscos_set_filetype_by_number (fname, filetype);
     190             :     }
     191             : #endif /* __riscos__ */
     192             : 
     193             :  leave:
     194         560 :   if (err)
     195             :     {
     196           0 :       if (fp && fp != es_stdout && fp != opt.outfp)
     197           0 :         es_fclose (fp);
     198           0 :       xfree (fname);
     199           0 :       return err;
     200             :     }
     201             : 
     202         560 :   *fnamep = fname;
     203         560 :   *fpp = fp;
     204         560 :   return 0;
     205             : }
     206             : 
     207             : /* Handle a plaintext packet.  If MFX is not NULL, update the MDs
     208             :  * Note: We should have used the filter stuff here, but we have to add
     209             :  * some easy mimic to set a read limit, so we calculate only the bytes
     210             :  * from the plaintext.  */
     211             : int
     212         590 : handle_plaintext (PKT_plaintext * pt, md_filter_context_t * mfx,
     213             :                   int nooutput, int clearsig)
     214             : {
     215         590 :   char *fname = NULL;
     216         590 :   estream_t fp = NULL;
     217             :   static off_t count = 0;
     218         590 :   int err = 0;
     219             :   int c;
     220             :   int convert;
     221             : #ifdef __riscos__
     222             :   int filetype = 0xfff;
     223             : #endif
     224             : 
     225         590 :   if (pt->mode == 't' || pt->mode == 'u' || pt->mode == 'm')
     226          20 :     convert = pt->mode;
     227             :   else
     228         570 :     convert = 0;
     229             : 
     230             :   /* Let people know what the plaintext info is. This allows the
     231             :      receiving program to try and do something different based on the
     232             :      format code (say, recode UTF-8 to local). */
     233         590 :   if (!nooutput && is_status_enabled ())
     234             :     {
     235             :       char status[50];
     236             : 
     237             :       /* Better make sure that stdout has been flushed in case the
     238             :          output will be written to it.  This is to make sure that no
     239             :          not-yet-flushed stuff will be written after the plaintext
     240             :          status message.  */
     241          13 :       es_fflush (es_stdout);
     242             : 
     243          26 :       snprintf (status, sizeof status,
     244          26 :                 "%X %lu ", (byte) pt->mode, (ulong) pt->timestamp);
     245          26 :       write_status_text_and_buffer (STATUS_PLAINTEXT,
     246          26 :                                     status, pt->name, pt->namelen, 0);
     247             : 
     248          13 :       if (!pt->is_partial)
     249             :         {
     250          13 :           snprintf (status, sizeof status, "%lu", (ulong) pt->len);
     251          13 :           write_status_text (STATUS_PLAINTEXT_LENGTH, status);
     252             :         }
     253             :     }
     254             : 
     255         590 :   if (! nooutput)
     256             :     {
     257         560 :       err = get_output_file (pt->name, pt->namelen, pt->buf, &fname, &fp);
     258         560 :       if (err)
     259           0 :         goto leave;
     260             :     }
     261             : 
     262         590 :   if (!pt->is_partial)
     263             :     {
     264             :       /* We have an actual length (which might be zero). */
     265             : 
     266         548 :       if (clearsig)
     267             :         {
     268           0 :           log_error ("clearsig encountered while not expected\n");
     269           0 :           err = gpg_error (GPG_ERR_UNEXPECTED);
     270           0 :           goto leave;
     271             :         }
     272             : 
     273         548 :       if (convert) /* Text mode.  */
     274             :         {
     275          46 :           for (; pt->len; pt->len--)
     276             :             {
     277          45 :               if ((c = iobuf_get (pt->buf)) == -1)
     278             :                 {
     279           0 :                   err = gpg_error_from_syserror ();
     280           0 :                   log_error ("problem reading source (%u bytes remaining)\n",
     281             :                              (unsigned) pt->len);
     282           0 :                   goto leave;
     283             :                 }
     284          45 :               if (mfx->md)
     285          45 :                 gcry_md_putc (mfx->md, c);
     286             : #ifndef HAVE_DOSISH_SYSTEM
     287             :               /* Convert to native line ending. */
     288             :               /* fixme: this hack might be too simple */
     289          45 :               if (c == '\r' && convert != 'm')
     290           0 :                 continue;
     291             : #endif
     292          45 :               if (fp)
     293             :                 {
     294          45 :                   if (opt.max_output && (++count) > opt.max_output)
     295             :                     {
     296           0 :                       log_error ("error writing to '%s': %s\n",
     297             :                                  fname, "exceeded --max-output limit\n");
     298           0 :                       err = gpg_error (GPG_ERR_TOO_LARGE);
     299           0 :                       goto leave;
     300             :                     }
     301          45 :                   else if (es_putc (c, fp) == EOF)
     302             :                     {
     303           0 :                       if (es_ferror (fp))
     304           0 :                         err = gpg_error_from_syserror ();
     305             :                       else
     306           0 :                         err = gpg_error (GPG_ERR_EOF);
     307           0 :                       log_error ("error writing to '%s': %s\n",
     308             :                                  fname, gpg_strerror (err));
     309           0 :                       goto leave;
     310             :                     }
     311             :                 }
     312             :             }
     313             :         }
     314             :       else  /* Binary mode.  */
     315             :         {
     316         547 :           byte *buffer = xmalloc (32768);
     317        1716 :           while (pt->len)
     318             :             {
     319         622 :               int len = pt->len > 32768 ? 32768 : pt->len;
     320         622 :               len = iobuf_read (pt->buf, buffer, len);
     321         622 :               if (len == -1)
     322             :                 {
     323           0 :                   err = gpg_error_from_syserror ();
     324           0 :                   log_error ("problem reading source (%u bytes remaining)\n",
     325             :                              (unsigned) pt->len);
     326           0 :                   xfree (buffer);
     327           0 :                   goto leave;
     328             :                 }
     329         622 :               if (mfx->md)
     330         622 :                 gcry_md_write (mfx->md, buffer, len);
     331         622 :               if (fp)
     332             :                 {
     333         599 :                   if (opt.max_output && (count += len) > opt.max_output)
     334             :                     {
     335           0 :                       log_error ("error writing to '%s': %s\n",
     336             :                                  fname, "exceeded --max-output limit\n");
     337           0 :                       err = gpg_error (GPG_ERR_TOO_LARGE);
     338           0 :                       xfree (buffer);
     339           0 :                       goto leave;
     340             :                     }
     341         599 :                   else if (es_fwrite (buffer, 1, len, fp) != len)
     342             :                     {
     343           0 :                       err = gpg_error_from_syserror ();
     344           0 :                       log_error ("error writing to '%s': %s\n",
     345             :                                  fname, gpg_strerror (err));
     346           0 :                       xfree (buffer);
     347           0 :                       goto leave;
     348             :                     }
     349             :                 }
     350         622 :               pt->len -= len;
     351             :             }
     352         547 :           xfree (buffer);
     353             :         }
     354             :     }
     355          42 :   else if (!clearsig)
     356             :     {
     357          26 :       if (convert)
     358             :         {                       /* text mode */
     359        3144 :           while ((c = iobuf_get (pt->buf)) != -1)
     360             :             {
     361        3138 :               if (mfx->md)
     362        3138 :                 gcry_md_putc (mfx->md, c);
     363             : #ifndef HAVE_DOSISH_SYSTEM
     364        3138 :               if (c == '\r' && convert != 'm')
     365          72 :                 continue;       /* fixme: this hack might be too simple */
     366             : #endif
     367        3066 :               if (fp)
     368             :                 {
     369        3066 :                   if (opt.max_output && (++count) > opt.max_output)
     370             :                     {
     371           0 :                       log_error ("Error writing to '%s': %s\n",
     372             :                                  fname, "exceeded --max-output limit\n");
     373           0 :                       err = gpg_error (GPG_ERR_TOO_LARGE);
     374           0 :                       goto leave;
     375             :                     }
     376        3066 :                   else if (es_putc (c, fp) == EOF)
     377             :                     {
     378           0 :                       if (es_ferror (fp))
     379           0 :                         err = gpg_error_from_syserror ();
     380             :                       else
     381           0 :                         err = gpg_error (GPG_ERR_EOF);
     382           0 :                       log_error ("error writing to '%s': %s\n",
     383             :                                  fname, gpg_strerror (err));
     384           0 :                       goto leave;
     385             :                     }
     386             :                 }
     387             :             }
     388             :         }
     389             :       else
     390             :         {                       /* binary mode */
     391             :           byte *buffer;
     392          23 :           int eof_seen = 0;
     393             : 
     394          23 :           buffer = xtrymalloc (32768);
     395          23 :           if (!buffer)
     396             :             {
     397           0 :               err = gpg_error_from_syserror ();
     398           0 :               goto leave;
     399             :             }
     400             : 
     401         116 :           while (!eof_seen)
     402             :             {
     403             :               /* Why do we check for len < 32768:
     404             :                * If we won't, we would practically read 2 EOFs but
     405             :                * the first one has already popped the block_filter
     406             :                * off and therefore we don't catch the boundary.
     407             :                * So, always assume EOF if iobuf_read returns less bytes
     408             :                * then requested */
     409          82 :               int len = iobuf_read (pt->buf, buffer, 32768);
     410          82 :               if (len == -1)
     411          12 :                 break;
     412          70 :               if (len < 32768)
     413          11 :                 eof_seen = 1;
     414          70 :               if (mfx->md)
     415          70 :                 gcry_md_write (mfx->md, buffer, len);
     416          70 :               if (fp)
     417             :                 {
     418          70 :                   if (opt.max_output && (count += len) > opt.max_output)
     419             :                     {
     420           0 :                       log_error ("error writing to '%s': %s\n",
     421             :                                  fname, "exceeded --max-output limit\n");
     422           0 :                       err = gpg_error (GPG_ERR_TOO_LARGE);
     423           0 :                       xfree (buffer);
     424           0 :                       goto leave;
     425             :                     }
     426          70 :                   else if (es_fwrite (buffer, 1, len, fp) != len)
     427             :                     {
     428           0 :                       err = gpg_error_from_syserror ();
     429           0 :                       log_error ("error writing to '%s': %s\n",
     430             :                                  fname, gpg_strerror (err));
     431           0 :                       xfree (buffer);
     432           0 :                       goto leave;
     433             :                     }
     434             :                 }
     435             :             }
     436          23 :           xfree (buffer);
     437             :         }
     438          26 :       pt->buf = NULL;
     439             :     }
     440             :   else /* Clear text signature - don't hash the last CR,LF.   */
     441             :     {
     442          16 :       int state = 0;
     443             : 
     444      207476 :       while ((c = iobuf_get (pt->buf)) != -1)
     445             :         {
     446      207444 :           if (fp)
     447             :             {
     448      204630 :               if (opt.max_output && (++count) > opt.max_output)
     449             :                 {
     450           0 :                   log_error ("error writing to '%s': %s\n",
     451             :                              fname, "exceeded --max-output limit\n");
     452           0 :                   err = gpg_error (GPG_ERR_TOO_LARGE);
     453           0 :                   goto leave;
     454             :                 }
     455      204630 :               else if (es_putc (c, fp) == EOF)
     456             :                 {
     457           0 :                   err = gpg_error_from_syserror ();
     458           0 :                   log_error ("error writing to '%s': %s\n",
     459             :                              fname, gpg_strerror (err));
     460           0 :                   goto leave;
     461             :                 }
     462             :             }
     463      207444 :           if (!mfx->md)
     464           0 :             continue;
     465      207444 :           if (state == 2)
     466             :             {
     467        5313 :               gcry_md_putc (mfx->md, '\r');
     468        5313 :               gcry_md_putc (mfx->md, '\n');
     469        5313 :               state = 0;
     470             :             }
     471      207444 :           if (!state)
     472             :             {
     473      207444 :               if (c == '\r')
     474           0 :                 state = 1;
     475      207444 :               else if (c == '\n')
     476        5329 :                 state = 2;
     477             :               else
     478      202115 :                 gcry_md_putc (mfx->md, c);
     479             :             }
     480           0 :           else if (state == 1)
     481             :             {
     482           0 :               if (c == '\n')
     483           0 :                 state = 2;
     484             :               else
     485             :                 {
     486           0 :                   gcry_md_putc (mfx->md, '\r');
     487           0 :                   if (c == '\r')
     488           0 :                     state = 1;
     489             :                   else
     490             :                     {
     491           0 :                       state = 0;
     492           0 :                       gcry_md_putc (mfx->md, c);
     493             :                     }
     494             :                 }
     495             :             }
     496             :         }
     497          16 :       pt->buf = NULL;
     498             :     }
     499             : 
     500         590 :   if (fp && fp != es_stdout && fp != opt.outfp && es_fclose (fp))
     501             :     {
     502           0 :       err = gpg_error_from_syserror ();
     503           0 :       log_error ("error closing '%s': %s\n", fname, gpg_strerror (err));
     504           0 :       fp = NULL;
     505           0 :       goto leave;
     506             :     }
     507         590 :   fp = NULL;
     508             : 
     509             :  leave:
     510             :   /* Make sure that stdout gets flushed after the plaintext has been
     511             :      handled.  This is for extra security as we do a flush anyway
     512             :      before checking the signature.  */
     513         590 :   if (es_fflush (es_stdout))
     514             :     {
     515             :       /* We need to check the return code to detect errors like disk
     516             :          full for short plaintexts.  See bug#1207.  Checking return
     517             :          values is a good idea in any case.  */
     518           0 :       if (!err)
     519           0 :         err = gpg_error_from_syserror ();
     520           0 :       log_error ("error flushing '%s': %s\n", "[stdout]",
     521             :                  gpg_strerror (err));
     522             :     }
     523             : 
     524         590 :   if (fp && fp != es_stdout && fp != opt.outfp)
     525           0 :     es_fclose (fp);
     526         590 :   xfree (fname);
     527         590 :   return err;
     528             : }
     529             : 
     530             : 
     531             : static void
     532          16 : do_hash (gcry_md_hd_t md, gcry_md_hd_t md2, IOBUF fp, int textmode)
     533             : {
     534             :   text_filter_context_t tfx;
     535             :   int c;
     536             : 
     537          16 :   if (textmode)
     538             :     {
     539           0 :       memset (&tfx, 0, sizeof tfx);
     540           0 :       iobuf_push_filter (fp, text_filter, &tfx);
     541             :     }
     542          16 :   if (md2)
     543             :     {                           /* work around a strange behaviour in pgp2 */
     544             :       /* It seems that at least PGP5 converts a single CR to a CR,LF too */
     545           0 :       int lc = -1;
     546           0 :       while ((c = iobuf_get (fp)) != -1)
     547             :         {
     548           0 :           if (c == '\n' && lc == '\r')
     549           0 :             gcry_md_putc (md2, c);
     550           0 :           else if (c == '\n')
     551             :             {
     552           0 :               gcry_md_putc (md2, '\r');
     553           0 :               gcry_md_putc (md2, c);
     554             :             }
     555           0 :           else if (c != '\n' && lc == '\r')
     556             :             {
     557           0 :               gcry_md_putc (md2, '\n');
     558           0 :               gcry_md_putc (md2, c);
     559             :             }
     560             :           else
     561           0 :             gcry_md_putc (md2, c);
     562             : 
     563           0 :           if (md)
     564           0 :             gcry_md_putc (md, c);
     565           0 :           lc = c;
     566             :         }
     567             :     }
     568             :   else
     569             :     {
     570      496872 :       while ((c = iobuf_get (fp)) != -1)
     571             :         {
     572      496840 :           if (md)
     573      496840 :             gcry_md_putc (md, c);
     574             :         }
     575             :     }
     576          16 : }
     577             : 
     578             : 
     579             : /****************
     580             :  * Ask for the detached datafile and calculate the digest from it.
     581             :  * INFILE is the name of the input file.
     582             :  */
     583             : int
     584          16 : ask_for_detached_datafile (gcry_md_hd_t md, gcry_md_hd_t md2,
     585             :                            const char *inname, int textmode)
     586             : {
     587             :   progress_filter_context_t *pfx;
     588          16 :   char *answer = NULL;
     589             :   IOBUF fp;
     590          16 :   int rc = 0;
     591             : 
     592          16 :   pfx = new_progress_context ();
     593          16 :   fp = open_sigfile (inname, pfx);      /* Open default file. */
     594             : 
     595          16 :   if (!fp && !opt.batch)
     596             :     {
     597           0 :       int any = 0;
     598           0 :       tty_printf (_("Detached signature.\n"));
     599             :       do
     600             :         {
     601             :           char *name;
     602             : 
     603           0 :           xfree (answer);
     604           0 :           tty_enable_completion (NULL);
     605           0 :           name = cpr_get ("detached_signature.filename",
     606           0 :                           _("Please enter name of data file: "));
     607           0 :           tty_disable_completion ();
     608           0 :           cpr_kill_prompt ();
     609           0 :           answer = make_filename (name, (void *) NULL);
     610           0 :           xfree (name);
     611             : 
     612           0 :           if (any && !*answer)
     613             :             {
     614           0 :               rc = gpg_error (GPG_ERR_GENERAL); /*G10ERR_READ_FILE */
     615           0 :               goto leave;
     616             :             }
     617           0 :           fp = iobuf_open (answer);
     618           0 :           if (fp && is_secured_file (iobuf_get_fd (fp)))
     619             :             {
     620           0 :               iobuf_close (fp);
     621           0 :               fp = NULL;
     622           0 :               gpg_err_set_errno (EPERM);
     623             :             }
     624           0 :           if (!fp && errno == ENOENT)
     625             :             {
     626           0 :               tty_printf ("No such file, try again or hit enter to quit.\n");
     627           0 :               any++;
     628             :             }
     629           0 :           else if (!fp)
     630             :             {
     631           0 :               rc = gpg_error_from_syserror ();
     632           0 :               log_error (_("can't open '%s': %s\n"), answer,
     633           0 :                          strerror (errno));
     634           0 :               goto leave;
     635             :             }
     636             :         }
     637           0 :       while (!fp);
     638             :     }
     639             : 
     640          16 :   if (!fp)
     641             :     {
     642          16 :       if (opt.verbose)
     643           0 :         log_info (_("reading stdin ...\n"));
     644          16 :       fp = iobuf_open (NULL);
     645          16 :       log_assert (fp);
     646             :     }
     647          16 :   do_hash (md, md2, fp, textmode);
     648          16 :   iobuf_close (fp);
     649             : 
     650             : leave:
     651          16 :   xfree (answer);
     652          16 :   release_progress_context (pfx);
     653          16 :   return rc;
     654             : }
     655             : 
     656             : 
     657             : 
     658             : /* Hash the given files and append the hash to hash contexts MD and
     659             :  * MD2.  If FILES is NULL, stdin is hashed.  */
     660             : int
     661           0 : hash_datafiles (gcry_md_hd_t md, gcry_md_hd_t md2, strlist_t files,
     662             :                 const char *sigfilename, int textmode)
     663             : {
     664             :   progress_filter_context_t *pfx;
     665             :   IOBUF fp;
     666             :   strlist_t sl;
     667             : 
     668           0 :   pfx = new_progress_context ();
     669             : 
     670           0 :   if (!files)
     671             :     {
     672             :       /* Check whether we can open the signed material.  We avoid
     673             :          trying to open a file if run in batch mode.  This assumed
     674             :          data file for a sig file feature is just a convenience thing
     675             :          for the command line and the user needs to read possible
     676             :          warning messages. */
     677           0 :       if (!opt.batch)
     678             :         {
     679           0 :           fp = open_sigfile (sigfilename, pfx);
     680           0 :           if (fp)
     681             :             {
     682           0 :               do_hash (md, md2, fp, textmode);
     683           0 :               iobuf_close (fp);
     684           0 :               release_progress_context (pfx);
     685           0 :               return 0;
     686             :             }
     687             :         }
     688           0 :       log_error (_("no signed data\n"));
     689           0 :       release_progress_context (pfx);
     690           0 :       return gpg_error (GPG_ERR_NO_DATA);
     691             :     }
     692             : 
     693             : 
     694           0 :   for (sl = files; sl; sl = sl->next)
     695             :     {
     696           0 :       fp = iobuf_open (sl->d);
     697           0 :       if (fp && is_secured_file (iobuf_get_fd (fp)))
     698             :         {
     699           0 :           iobuf_close (fp);
     700           0 :           fp = NULL;
     701           0 :           gpg_err_set_errno (EPERM);
     702             :         }
     703           0 :       if (!fp)
     704             :         {
     705           0 :           int rc = gpg_error_from_syserror ();
     706           0 :           log_error (_("can't open signed data '%s'\n"),
     707           0 :                      print_fname_stdin (sl->d));
     708           0 :           release_progress_context (pfx);
     709           0 :           return rc;
     710             :         }
     711           0 :       handle_progress (pfx, fp, sl->d);
     712           0 :       do_hash (md, md2, fp, textmode);
     713           0 :       iobuf_close (fp);
     714             :     }
     715             : 
     716           0 :   release_progress_context (pfx);
     717           0 :   return 0;
     718             : }
     719             : 
     720             : 
     721             : /* Hash the data from file descriptor DATA_FD and append the hash to hash
     722             :    contexts MD and MD2.  */
     723             : int
     724           0 : hash_datafile_by_fd (gcry_md_hd_t md, gcry_md_hd_t md2, int data_fd,
     725             :                      int textmode)
     726             : {
     727           0 :   progress_filter_context_t *pfx = new_progress_context ();
     728             :   iobuf_t fp;
     729             : 
     730           0 :   if (is_secured_file (data_fd))
     731             :     {
     732           0 :       fp = NULL;
     733           0 :       gpg_err_set_errno (EPERM);
     734             :     }
     735             :   else
     736           0 :     fp = iobuf_fdopen_nc (data_fd, "rb");
     737             : 
     738           0 :   if (!fp)
     739             :     {
     740           0 :       int rc = gpg_error_from_syserror ();
     741           0 :       log_error (_("can't open signed data fd=%d: %s\n"),
     742           0 :                  data_fd, strerror (errno));
     743           0 :       release_progress_context (pfx);
     744           0 :       return rc;
     745             :     }
     746             : 
     747           0 :   handle_progress (pfx, fp, NULL);
     748             : 
     749           0 :   do_hash (md, md2, fp, textmode);
     750             : 
     751           0 :   iobuf_close (fp);
     752             : 
     753           0 :   release_progress_context (pfx);
     754           0 :   return 0;
     755             : }
     756             : 
     757             : 
     758             : /* Set up a plaintext packet with the appropriate filename.  If there
     759             :    is a --set-filename, use it (it's already UTF8).  If there is a
     760             :    regular filename, UTF8-ize it if necessary.  If there is no
     761             :    filenames at all, set the field empty. */
     762             : 
     763             : PKT_plaintext *
     764         537 : setup_plaintext_name (const char *filename, IOBUF iobuf)
     765             : {
     766             :   PKT_plaintext *pt;
     767             : 
     768         537 :   if ((filename && !iobuf_is_pipe_filename (filename))
     769          38 :        || (opt.set_filename && !iobuf_is_pipe_filename (opt.set_filename)))
     770         499 :     {
     771             :       char *s;
     772             : 
     773         499 :       if (opt.set_filename)
     774           0 :         s = make_basename (opt.set_filename, iobuf_get_real_fname (iobuf));
     775         499 :       else if (filename && !opt.flags.utf8_filename)
     776         499 :         {
     777         499 :           char *tmp = native_to_utf8 (filename);
     778         499 :           s = make_basename (tmp, iobuf_get_real_fname (iobuf));
     779         499 :           xfree (tmp);
     780             :         }
     781             :       else
     782           0 :         s = make_basename (filename, iobuf_get_real_fname (iobuf));
     783             : 
     784         499 :       pt = xmalloc (sizeof *pt + strlen (s) - 1);
     785         499 :       pt->namelen = strlen (s);
     786         499 :       memcpy (pt->name, s, pt->namelen);
     787         499 :       xfree (s);
     788             :     }
     789             :   else
     790             :     {
     791             :       /* no filename */
     792          38 :       pt = xmalloc (sizeof *pt - 1);
     793          38 :       pt->namelen = 0;
     794             :     }
     795             : 
     796         537 :   return pt;
     797             : }

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