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111 lines
2.2 KiB
C
111 lines
2.2 KiB
C
/* $OpenLDAP$ */
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/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
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*
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* Copyright 1998-2014 The OpenLDAP Foundation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted only as authorized by the OpenLDAP
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* Public License.
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*
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* A copy of this license is available in the file LICENSE in the
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* top-level directory of the distribution or, alternatively, at
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* <http://www.OpenLDAP.org/license.html>.
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*/
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#include "portable.h"
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#include <stdio.h>
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#include <ac/stdlib.h>
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#include <ac/ctype.h>
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#include <ac/string.h>
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#ifdef HAVE_FSTAT
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#include <sys/types.h>
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#include <sys/stat.h>
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#endif /* HAVE_FSTAT */
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#include <lber.h>
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#include <lutil.h>
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/* Get a password from a file. */
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int
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lutil_get_filed_password(
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const char *filename,
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struct berval *passwd )
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{
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size_t nread, nleft, nr;
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FILE *f = fopen( filename, "r" );
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if( f == NULL ) {
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perror( filename );
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return -1;
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}
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passwd->bv_val = NULL;
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passwd->bv_len = 4096;
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#ifdef HAVE_FSTAT
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{
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struct stat sb;
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if ( fstat( fileno( f ), &sb ) == 0 ) {
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if( sb.st_mode & 006 ) {
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fprintf( stderr, _("Warning: Password file %s"
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" is publicly readable/writeable\n"),
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filename );
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}
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if ( sb.st_size )
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passwd->bv_len = sb.st_size;
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}
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}
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#endif /* HAVE_FSTAT */
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passwd->bv_val = (char *) ber_memalloc( passwd->bv_len + 1 );
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if( passwd->bv_val == NULL ) {
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perror( filename );
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fclose( f );
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return -1;
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}
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nread = 0;
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nleft = passwd->bv_len;
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do {
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if( nleft == 0 ) {
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/* double the buffer size */
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char *p = (char *) ber_memrealloc( passwd->bv_val,
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2 * passwd->bv_len + 1 );
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if( p == NULL ) {
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ber_memfree( passwd->bv_val );
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passwd->bv_val = NULL;
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passwd->bv_len = 0;
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fclose( f );
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return -1;
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}
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nleft = passwd->bv_len;
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passwd->bv_len *= 2;
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passwd->bv_val = p;
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}
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nr = fread( &passwd->bv_val[nread], 1, nleft, f );
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if( nr < nleft && ferror( f ) ) {
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ber_memfree( passwd->bv_val );
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passwd->bv_val = NULL;
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passwd->bv_len = 0;
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fclose( f );
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return -1;
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}
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nread += nr;
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nleft -= nr;
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} while ( !feof(f) );
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passwd->bv_len = nread;
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passwd->bv_val[nread] = '\0';
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fclose( f );
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return 0;
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}
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