230 lines
6.3 KiB
C
230 lines
6.3 KiB
C
/*
|
|
* Copyright (c) 1997 - 2003 Kungliga Tekniska Högskolan
|
|
* (Royal Institute of Technology, Stockholm, Sweden).
|
|
* All rights reserved.
|
|
*
|
|
* 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 Institute 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 BY THE INSTITUTE AND CONTRIBUTORS ``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 INSTITUTE 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.
|
|
*/
|
|
|
|
#include "gssapi_locl.h"
|
|
|
|
RCSID("$Id: import_name.c,v 1.13 2003/03/16 17:33:31 lha Exp $");
|
|
|
|
static OM_uint32
|
|
parse_krb5_name (OM_uint32 *minor_status,
|
|
const char *name,
|
|
gss_name_t *output_name)
|
|
{
|
|
krb5_error_code kerr;
|
|
|
|
kerr = krb5_parse_name (gssapi_krb5_context, name, output_name);
|
|
|
|
if (kerr == 0)
|
|
return GSS_S_COMPLETE;
|
|
else if (kerr == KRB5_PARSE_ILLCHAR || kerr == KRB5_PARSE_MALFORMED) {
|
|
gssapi_krb5_set_error_string ();
|
|
*minor_status = kerr;
|
|
return GSS_S_BAD_NAME;
|
|
} else {
|
|
gssapi_krb5_set_error_string ();
|
|
*minor_status = kerr;
|
|
return GSS_S_FAILURE;
|
|
}
|
|
}
|
|
|
|
static OM_uint32
|
|
import_krb5_name (OM_uint32 *minor_status,
|
|
const gss_buffer_t input_name_buffer,
|
|
gss_name_t *output_name)
|
|
{
|
|
OM_uint32 ret;
|
|
char *tmp;
|
|
|
|
tmp = malloc (input_name_buffer->length + 1);
|
|
if (tmp == NULL) {
|
|
*minor_status = ENOMEM;
|
|
return GSS_S_FAILURE;
|
|
}
|
|
memcpy (tmp,
|
|
input_name_buffer->value,
|
|
input_name_buffer->length);
|
|
tmp[input_name_buffer->length] = '\0';
|
|
|
|
ret = parse_krb5_name(minor_status, tmp, output_name);
|
|
free(tmp);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static OM_uint32
|
|
import_hostbased_name (OM_uint32 *minor_status,
|
|
const gss_buffer_t input_name_buffer,
|
|
gss_name_t *output_name)
|
|
{
|
|
krb5_error_code kerr;
|
|
char *tmp;
|
|
char *p;
|
|
char *host;
|
|
char local_hostname[MAXHOSTNAMELEN];
|
|
|
|
*output_name = NULL;
|
|
|
|
tmp = malloc (input_name_buffer->length + 1);
|
|
if (tmp == NULL) {
|
|
*minor_status = ENOMEM;
|
|
return GSS_S_FAILURE;
|
|
}
|
|
memcpy (tmp,
|
|
input_name_buffer->value,
|
|
input_name_buffer->length);
|
|
tmp[input_name_buffer->length] = '\0';
|
|
|
|
p = strchr (tmp, '@');
|
|
if (p != NULL) {
|
|
*p = '\0';
|
|
host = p + 1;
|
|
} else {
|
|
if (gethostname(local_hostname, sizeof(local_hostname)) < 0) {
|
|
*minor_status = errno;
|
|
free (tmp);
|
|
return GSS_S_FAILURE;
|
|
}
|
|
host = local_hostname;
|
|
}
|
|
|
|
kerr = krb5_sname_to_principal (gssapi_krb5_context,
|
|
host,
|
|
tmp,
|
|
KRB5_NT_SRV_HST,
|
|
output_name);
|
|
free (tmp);
|
|
*minor_status = kerr;
|
|
if (kerr == 0)
|
|
return GSS_S_COMPLETE;
|
|
else if (kerr == KRB5_PARSE_ILLCHAR || kerr == KRB5_PARSE_MALFORMED) {
|
|
gssapi_krb5_set_error_string ();
|
|
*minor_status = kerr;
|
|
return GSS_S_BAD_NAME;
|
|
} else {
|
|
gssapi_krb5_set_error_string ();
|
|
*minor_status = kerr;
|
|
return GSS_S_FAILURE;
|
|
}
|
|
}
|
|
|
|
static OM_uint32
|
|
import_export_name (OM_uint32 *minor_status,
|
|
const gss_buffer_t input_name_buffer,
|
|
gss_name_t *output_name)
|
|
{
|
|
unsigned char *p;
|
|
uint32_t length;
|
|
OM_uint32 ret;
|
|
char *name;
|
|
|
|
if (input_name_buffer->length < 10 + GSS_KRB5_MECHANISM->length)
|
|
return GSS_S_BAD_NAME;
|
|
|
|
/* TOK, MECH_OID_LEN, DER(MECH_OID), NAME_LEN, NAME */
|
|
|
|
p = input_name_buffer->value;
|
|
|
|
if (memcmp(&p[0], "\x04\x01\x00", 3) != 0 ||
|
|
p[3] != GSS_KRB5_MECHANISM->length + 2 ||
|
|
p[4] != 0x06 ||
|
|
p[5] != GSS_KRB5_MECHANISM->length ||
|
|
memcmp(&p[6], GSS_KRB5_MECHANISM->elements,
|
|
GSS_KRB5_MECHANISM->length) != 0)
|
|
return GSS_S_BAD_NAME;
|
|
|
|
p += 6 + GSS_KRB5_MECHANISM->length;
|
|
|
|
length = p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3];
|
|
p += 4;
|
|
|
|
if (length > input_name_buffer->length - 10 - GSS_KRB5_MECHANISM->length)
|
|
return GSS_S_BAD_NAME;
|
|
|
|
name = malloc(length + 1);
|
|
if (name == NULL) {
|
|
*minor_status = ENOMEM;
|
|
return GSS_S_FAILURE;
|
|
}
|
|
memcpy(name, p, length);
|
|
name[length] = '\0';
|
|
|
|
ret = parse_krb5_name(minor_status, name, output_name);
|
|
free(name);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int
|
|
gss_oid_equal(const gss_OID a, const gss_OID b)
|
|
{
|
|
if (a == b)
|
|
return 1;
|
|
else if (a == GSS_C_NO_OID || b == GSS_C_NO_OID || a->length != b->length)
|
|
return 0;
|
|
else
|
|
return memcmp(a->elements, b->elements, a->length) == 0;
|
|
}
|
|
|
|
OM_uint32 gss_import_name
|
|
(OM_uint32 * minor_status,
|
|
const gss_buffer_t input_name_buffer,
|
|
const gss_OID input_name_type,
|
|
gss_name_t * output_name
|
|
)
|
|
{
|
|
GSSAPI_KRB5_INIT ();
|
|
|
|
*minor_status = 0;
|
|
*output_name = GSS_C_NO_NAME;
|
|
|
|
if (gss_oid_equal(input_name_type, GSS_C_NT_HOSTBASED_SERVICE))
|
|
return import_hostbased_name (minor_status,
|
|
input_name_buffer,
|
|
output_name);
|
|
else if (gss_oid_equal(input_name_type, GSS_C_NO_OID)
|
|
|| gss_oid_equal(input_name_type, GSS_C_NT_USER_NAME)
|
|
|| gss_oid_equal(input_name_type, GSS_KRB5_NT_PRINCIPAL_NAME))
|
|
/* default printable syntax */
|
|
return import_krb5_name (minor_status,
|
|
input_name_buffer,
|
|
output_name);
|
|
else if (gss_oid_equal(input_name_type, GSS_C_NT_EXPORT_NAME)) {
|
|
return import_export_name(minor_status,
|
|
input_name_buffer,
|
|
output_name);
|
|
} else {
|
|
*minor_status = 0;
|
|
return GSS_S_BAD_NAMETYPE;
|
|
}
|
|
}
|