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/* #pragma ident "@(#)gssd_pname_to_uid.c 1.18 04/02/23 SMI" */
/*
* Copyright (c) 2011, PADL Software Pty Ltd.
* 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 PADL Software 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 PADL SOFTWARE 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 PADL SOFTWARE 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.
*/
/*
* Copyright 1996 by Sun Microsystems, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software
* and its documentation for any purpose is hereby granted without fee,
* provided that the above copyright notice appears in all copies and
* that both that copyright notice and this permission notice appear in
* supporting documentation, and that the name of Sun Microsystems not be used
* in advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. Sun Microsystems makes no
* representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*
* SUN MICROSYSTEMS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL SUN MICROSYSTEMS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
/*
* glue routines that test the mech id either passed in to
* gss_init_sec_contex() or gss_accept_sec_context() or within the glue
* routine supported version of the security context and then call
* the appropriate underlying mechanism library procedure.
*
*/
#include "mglueP.h"
#ifndef NO_PASSWORD
#include <pwd.h>
#endif
static OM_uint32
attr_localname(OM_uint32 *minor,
const gss_mechanism mech,
const gss_name_t mech_name,
gss_buffer_t localname)
{
OM_uint32 major = GSS_S_UNAVAILABLE;
OM_uint32 tmpMinor;
int more = -1;
gss_buffer_desc value;
gss_buffer_desc display_value;
int authenticated = 0, complete = 0;
value.value = NULL;
display_value.value = NULL;
if (mech->gss_get_name_attribute == NULL)
return GSS_S_UNAVAILABLE;
major = mech->gss_get_name_attribute(minor,
mech_name,
GSS_C_ATTR_LOCAL_LOGIN_USER,
&authenticated,
&complete,
&value,
&display_value,
&more);
if (GSS_ERROR(major)) {
map_error(minor, mech);
goto cleanup;
}
if (!authenticated)
major = GSS_S_UNAVAILABLE;
else {
localname->value = value.value;
localname->length = value.length;
value.value = NULL;
}
cleanup:
if (display_value.value)
gss_release_buffer(&tmpMinor, &display_value);
if (value.value)
gss_release_buffer(&tmpMinor, &value);
return major;
}
OM_uint32 KRB5_CALLCONV
gss_localname(OM_uint32 *minor,
const gss_name_t pname,
gss_const_OID mech_type,
gss_buffer_t localname)
{
OM_uint32 major, tmpMinor;
gss_mechanism mech;
gss_union_name_t unionName;
gss_name_t mechName = GSS_C_NO_NAME, mechNameP;
gss_OID selected_mech = GSS_C_NO_OID;
if (localname != GSS_C_NO_BUFFER) {
localname->length = 0;
localname->value = NULL;
}
if (minor == NULL)
return GSS_S_CALL_INACCESSIBLE_WRITE;
*minor = 0;
if (pname == GSS_C_NO_NAME)
return GSS_S_CALL_INACCESSIBLE_READ;
if (localname == NULL)
return GSS_S_CALL_INACCESSIBLE_WRITE;
unionName = (gss_union_name_t)pname;
if (mech_type != GSS_C_NO_OID) {
major = gssint_select_mech_type(minor, mech_type, &selected_mech);
if (major != GSS_S_COMPLETE)
return major;
mech = gssint_get_mechanism(selected_mech);
} else
mech = gssint_get_mechanism(unionName->mech_type);
if (mech == NULL)
return GSS_S_UNAVAILABLE;
/* may need to create a mechanism specific name */
if (unionName->mech_type == GSS_C_NO_OID ||
(unionName->mech_type != GSS_C_NO_OID &&
!g_OID_equal(unionName->mech_type, &mech->mech_type))) {
major = gssint_import_internal_name(minor, &mech->mech_type,
unionName, &mechName);
if (GSS_ERROR(major))
return major;
mechNameP = mechName;
} else
mechNameP = unionName->mech_name;
major = GSS_S_UNAVAILABLE;
if (mech->gss_localname != NULL) {
major = mech->gss_localname(minor, mechNameP, mech_type, localname);
if (GSS_ERROR(major))
map_error(minor, mech);
}
if (GSS_ERROR(major))
major = attr_localname(minor, mech, mechNameP, localname);
if (mechName != GSS_C_NO_NAME)
gssint_release_internal_name(&tmpMinor, &mech->mech_type, &mechName);
return major;
}
#ifndef _WIN32
OM_uint32 KRB5_CALLCONV
gss_pname_to_uid(OM_uint32 *minor,
const gss_name_t name,
const gss_OID mech_type,
uid_t *uidOut)
{
OM_uint32 major = GSS_S_UNAVAILABLE, tmpminor;
#ifndef NO_PASSWORD
gss_buffer_desc localname;
char pwbuf[BUFSIZ];
char *localuser = NULL;
struct passwd *pwd = NULL;
struct passwd pw;
int code = 0;
localname.value = NULL;
major = gss_localname(minor, name, mech_type, &localname);
if (!GSS_ERROR(major) && localname.value) {
localuser = malloc(localname.length + 1);
if (localuser == NULL)
code = ENOMEM;
if (code == 0) {
memcpy(localuser, localname.value, localname.length);
localuser[localname.length] = '\0';
code = k5_getpwnam_r(localuser, &pw, pwbuf, sizeof(pwbuf), &pwd);
}
if ((code == 0) && pwd)
*uidOut = pwd->pw_uid;
else
major = GSS_S_FAILURE;
}
free(localuser);
if (localname.value)
gss_release_buffer(&tmpminor, &localname);
#endif /*NO_PASSWORD*/
return major;
}
#endif /*_WIN32*/
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