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/* miscellaneous.c - Stuff not fitting elsewhere
* Copyright (C) 2003 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 <stdlib.h>
#include <errno.h>
#include "util.h"
#include "iobuf.h"
/* Decide whether the filename is stdout or a real filename and return
* an appropriate string. */
const char *
print_fname_stdout (const char *s)
{
if( !s || (*s == '-' && !s[1]) )
return "[stdout]";
return s;
}
/* Decide whether the filename is stdin or a real filename and return
* an appropriate string. */
const char *
print_fname_stdin (const char *s)
{
if( !s || (*s == '-' && !s[1]) )
return "[stdin]";
return s;
}
void
print_string( FILE *fp, const byte *p, size_t n, int delim )
{
print_sanitized_buffer (fp, p, n, delim);
}
void
print_utf8_string2 ( FILE *fp, const byte *p, size_t n, int delim )
{
print_sanitized_utf8_buffer (fp, p, n, delim);
}
void
print_utf8_string( FILE *fp, const byte *p, size_t n )
{
print_utf8_string2 (fp, p, n, 0);
}
char *
make_printable_string (const void *p, size_t n, int delim )
{
return sanitize_buffer (p, n, delim);
}
/*
* Check if the file is compressed.
*/
int
is_file_compressed (const char *s, int *ret_rc)
{
iobuf_t a;
byte buf[4];
int i, rc = 0;
struct magic_compress_s {
size_t len;
byte magic[4];
} magic[] = {
{ 3, { 0x42, 0x5a, 0x68, 0x00 } }, /* bzip2 */
{ 3, { 0x1f, 0x8b, 0x08, 0x00 } }, /* gzip */
{ 4, { 0x50, 0x4b, 0x03, 0x04 } }, /* (pk)zip */
};
if ( !s || (*s == '-' && !s[1]) || !ret_rc )
return 0; /* We can't check stdin or no file was given */
a = iobuf_open( s );
if ( a == NULL ) {
*ret_rc = gpg_error_from_errno (errno);
return 0;
}
if ( iobuf_get_filelength( a ) < 4 ) {
*ret_rc = 0;
goto leave;
}
if ( iobuf_read( a, buf, 4 ) == -1 ) {
*ret_rc = a->error;
goto leave;
}
for ( i = 0; i < DIM( magic ); i++ ) {
if ( !memcmp( buf, magic[i].magic, magic[i].len ) ) {
*ret_rc = 0;
rc = 1;
break;
}
}
leave:
iobuf_close( a );
return rc;
}
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