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/* plaintext.c - process an plaintext packet
* Copyright (C) 1998 Free Software Foundation, Inc.
*
* This file is part of GNUPG.
*
* GNUPG 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 2 of the License, or
* (at your option) any later version.
*
* GNUPG 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "util.h"
#include "memory.h"
#include "options.h"
#include "packet.h"
#include "ttyio.h"
#include "filter.h"
#include "main.h"
#include "i18n.h"
/****************
* Handle a plaintext packet. If MFX is not NULL, update the MDs
* Note: we should use the filter stuff here, but we have to add some
* easy mimic to set a read limit, so we calculate only the
* bytes from the plaintext.
*/
int
handle_plaintext( PKT_plaintext *pt, md_filter_context_t *mfx )
{
char *fname;
FILE *fp = NULL;
int rc = 0;
int c;
int convert = pt->mode == 't';
/* create the filename as C string */
if( opt.outfile ) {
fname = m_alloc( strlen( opt.outfile ) + 1);
strcpy(fname, opt.outfile );
}
else {
fname = m_alloc( pt->namelen +1 );
memcpy( fname, pt->name, pt->namelen );
fname[pt->namelen] = 0;
}
if( !*fname || (*fname=='-' && !fname[1])) {
/* no filename or "-" given; write to stdout */
fp = stdout;
}
else if( overwrite_filep( fname ) )
goto leave;
if( fp )
;
else if( !(fp = fopen(fname,"wb")) ) {
log_error("Error creating '%s': %s\n", fname, strerror(errno) );
rc = G10ERR_WRITE_FILE;
goto leave;
}
if( pt->len ) {
for( ; pt->len; pt->len-- ) {
if( (c = iobuf_get(pt->buf)) == -1 ) {
log_error("Problem reading source\n");
rc = G10ERR_READ_FILE;
goto leave;
}
if( mfx->md )
md_putc(mfx->md, c );
if( convert && c == '\r' )
continue; /* FIXME: this hack is too simple */
if( putc( c, fp ) == EOF ) {
log_error("Error writing to '%s': %s\n", fname, strerror(errno) );
rc = G10ERR_WRITE_FILE;
goto leave;
}
}
}
else {
while( (c = iobuf_get(pt->buf)) != -1 ) {
if( mfx->md )
md_putc(mfx->md, c );
if( convert && c == '\r' )
continue; /* FIXME: this hack is too simple */
if( putc( c, fp ) == EOF ) {
log_error("Error writing to '%s': %s\n",
fname, strerror(errno) );
rc = G10ERR_WRITE_FILE;
goto leave;
}
}
iobuf_clear_eof(pt->buf);
}
if( fp && fp != stdout && fclose(fp) ) {
log_error("Error closing '%s': %s\n", fname, strerror(errno) );
fp = NULL;
rc = G10ERR_WRITE_FILE;
goto leave;
}
fp = NULL;
leave:
if( fp && fp != stdout )
fclose(fp);
m_free(fname);
return rc;
}
/****************
* Ask for the detached datafile and calculate the digest from it.
* INFILE is the name of the input file.
*/
int
ask_for_detached_datafile( md_filter_context_t *mfx, const char *inname )
{
char *answer = NULL;
IOBUF fp;
int rc = 0;
int c;
fp = open_sigfile( inname ); /* open default file */
if( !fp && !opt.batch ) {
int any=0;
tty_printf("Detached signature.\n");
do {
m_free(answer);
answer = tty_get("Please enter name of data file: ");
tty_kill_prompt();
if( any && !*answer ) {
rc = G10ERR_READ_FILE;
goto leave;
}
fp = iobuf_open(answer);
if( !fp && errno == ENOENT ) {
tty_printf("No such file, try again or hit enter to quit.\n");
any++;
}
else if( !fp ) {
log_error("can't open '%s': %s\n", answer, strerror(errno) );
rc = G10ERR_READ_FILE;
goto leave;
}
} while( !fp );
}
if( !fp ) {
if( opt.verbose )
log_info("reading stdin ...\n");
while( (c = getchar()) != EOF ) {
if( mfx->md )
md_putc(mfx->md, c );
}
}
else {
while( (c = iobuf_get(fp)) != -1 ) {
if( mfx->md )
md_putc(mfx->md, c );
}
iobuf_close(fp);
}
leave:
m_free(answer);
return rc;
}
/****************
* Hash the given files and append the hash to hash context md.
* If FILES is NULL, hash stdin.
*/
int
hash_datafiles( MD_HANDLE md, STRLIST files, int textmode )
{
IOBUF fp;
STRLIST sl=NULL;
text_filter_context_t tfx;
int c;
if( !files )
add_to_strlist( &sl, "-");
else
sl = files;
for( ; sl; sl = sl->next ) {
fp = iobuf_open( sl->d );
if( !fp ) {
log_error(_("can't open signed data '%s'\n"),
print_fname_stdin(sl->d));
if( !files )
free_strlist(sl);
return G10ERR_OPEN_FILE;
}
if( textmode ) {
memset( &tfx, 0, sizeof tfx);
iobuf_push_filter( fp, text_filter, &tfx );
}
while( (c = iobuf_get(fp)) != -1 )
md_putc(md, c );
iobuf_close(fp);
}
if( !files )
free_strlist(sl);
return 0;
}

File Metadata

Mime Type
text/x-c
Expires
Tue, Sep 16, 12:44 AM (14 h, 42 m)
Storage Engine
local-disk
Storage Format
Raw Data
Storage Handle
e3/a7/d82e389b8500b537e0e28bb6a543

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