freebsd-dev/lib/libgssapi/gss_oid_to_str.c
Pedro F. Giffuni 8a16b7a18f General further adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 3-Clause license.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

Special thanks to Wind River for providing access to "The Duke of
Highlander" tool: an older (2014) run over FreeBSD tree was useful as a
starting point.
2017-11-20 19:49:47 +00:00

121 lines
3.6 KiB
C

/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 2000 The Regents of the University of Michigan.
* All rights reserved.
*
* Copyright (c) 2000 Dug Song <dugsong@UMICH.EDU>.
* All rights reserved, all wrongs reversed.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* $FreeBSD$ */
#include <gssapi/gssapi.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "utils.h"
OM_uint32
gss_oid_to_str(OM_uint32 *minor_status, gss_OID oid, gss_buffer_t oid_str)
{
char numstr[128];
unsigned long number;
int numshift;
size_t string_length;
size_t i;
unsigned char *cp;
char *bp;
*minor_status = 0;
_gss_buffer_zero(oid_str);
if (oid == GSS_C_NULL_OID)
return (GSS_S_FAILURE);
/* Decoded according to krb5/gssapi_krb5.c */
/* First determine the size of the string */
string_length = 0;
number = 0;
numshift = 0;
cp = (unsigned char *) oid->elements;
number = (unsigned long) cp[0];
sprintf(numstr, "%ld ", number/40);
string_length += strlen(numstr);
sprintf(numstr, "%ld ", number%40);
string_length += strlen(numstr);
for (i=1; i<oid->length; i++) {
if ( (size_t) (numshift+7) < (sizeof(unsigned long)*8)) {
number = (number << 7) | (cp[i] & 0x7f);
numshift += 7;
}
else {
*minor_status = 0;
return(GSS_S_FAILURE);
}
if ((cp[i] & 0x80) == 0) {
sprintf(numstr, "%ld ", number);
string_length += strlen(numstr);
number = 0;
numshift = 0;
}
}
/*
* If we get here, we've calculated the length of "n n n ... n ".
* Add 4 here for "{ " and "}\0".
*/
string_length += 4;
if ((bp = (char *) malloc(string_length))) {
strcpy(bp, "{ ");
number = (unsigned long) cp[0];
sprintf(numstr, "%ld ", number/40);
strcat(bp, numstr);
sprintf(numstr, "%ld ", number%40);
strcat(bp, numstr);
number = 0;
cp = (unsigned char *) oid->elements;
for (i=1; i<oid->length; i++) {
number = (number << 7) | (cp[i] & 0x7f);
if ((cp[i] & 0x80) == 0) {
sprintf(numstr, "%ld ", number);
strcat(bp, numstr);
number = 0;
}
}
strcat(bp, "}");
oid_str->length = strlen(bp)+1;
oid_str->value = (void *) bp;
*minor_status = 0;
return(GSS_S_COMPLETE);
}
*minor_status = ENOMEM;
return(GSS_S_FAILURE);
}