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/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
* Copyright 1998-2022 The OpenLDAP Foundation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted only as authorized by the OpenLDAP
* Public License.
*
* A copy of this license is available in the file LICENSE in the
* top-level directory of the distribution or, alternatively, at
* <http://www.OpenLDAP.org/license.html>.
*/
#include "portable.h"
#include <stdio.h>
#include <ac/stdlib.h>
#include <ac/ctype.h>
#include <ac/string.h>
#ifdef HAVE_FSTAT
#include <sys/types.h>
#include <sys/stat.h>
#endif /* HAVE_FSTAT */
#include <lber.h>
#include <lutil.h>
/* Get a password from a file. */
int
lutil_get_filed_password(
const char *filename,
struct berval *passwd )
{
size_t nread, nleft, nr;
FILE *f = fopen( filename, "r" );
if( f == NULL ) {
perror( filename );
return -1;
}
passwd->bv_val = NULL;
passwd->bv_len = 4096;
#ifdef HAVE_FSTAT
{
struct stat sb;
if ( fstat( fileno( f ), &sb ) == 0 ) {
if( sb.st_mode & 006 ) {
fprintf( stderr, _("Warning: Password file %s"
" is publicly readable/writeable\n"),
filename );
}
if ( sb.st_size )
passwd->bv_len = sb.st_size;
}
}
#endif /* HAVE_FSTAT */
passwd->bv_val = (char *) ber_memalloc( passwd->bv_len + 1 );
if( passwd->bv_val == NULL ) {
perror( filename );
fclose( f );
return -1;
}
nread = 0;
nleft = passwd->bv_len;
do {
if( nleft == 0 ) {
/* double the buffer size */
char *p = (char *) ber_memrealloc( passwd->bv_val,
2 * passwd->bv_len + 1 );
if( p == NULL ) {
ber_memfree( passwd->bv_val );
passwd->bv_val = NULL;
passwd->bv_len = 0;
fclose( f );
return -1;
}
nleft = passwd->bv_len;
passwd->bv_len *= 2;
passwd->bv_val = p;
}
nr = fread( &passwd->bv_val[nread], 1, nleft, f );
if( nr < nleft && ferror( f ) ) {
ber_memfree( passwd->bv_val );
passwd->bv_val = NULL;
passwd->bv_len = 0;
fclose( f );
return -1;
}
nread += nr;
nleft -= nr;
} while ( !feof(f) );
passwd->bv_len = nread;
passwd->bv_val[nread] = '\0';
fclose( f );
return 0;
}
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