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/*
* 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.
*/
#include "mech_locl.h"
static OM_uint32
mech_localname(OM_uint32 *minor_status,
struct _gss_mechanism_name *mn,
gss_buffer_t localname)
{
OM_uint32 major_status = GSS_S_UNAVAILABLE;
*minor_status = 0;
if (mn->gmn_mech->gm_localname == NULL)
return GSS_S_UNAVAILABLE;
major_status = mn->gmn_mech->gm_localname(minor_status,
mn->gmn_name,
mn->gmn_mech_oid,
localname);
if (GSS_ERROR(major_status))
_gss_mg_error(mn->gmn_mech, major_status, *minor_status);
return major_status;
}
static OM_uint32
attr_localname(OM_uint32 *minor_status,
struct _gss_mechanism_name *mn,
gss_buffer_t localname)
{
OM_uint32 major_status = GSS_S_UNAVAILABLE;
OM_uint32 tmpMinor;
gss_buffer_desc value = GSS_C_EMPTY_BUFFER;
gss_buffer_desc display_value = GSS_C_EMPTY_BUFFER;
int authenticated = 0, complete = 0;
int more = -1;
*minor_status = 0;
localname->length = 0;
localname->value = NULL;
if (mn->gmn_mech->gm_get_name_attribute == NULL)
return GSS_S_UNAVAILABLE;
major_status = mn->gmn_mech->gm_get_name_attribute(minor_status,
mn->gmn_name,
GSS_C_ATTR_LOCAL_LOGIN_USER,
&authenticated,
&complete,
&value,
&display_value,
&more);
if (GSS_ERROR(major_status)) {
_gss_mg_error(mn->gmn_mech, major_status, *minor_status);
return major_status;
}
if (authenticated) {
*localname = value;
} else {
major_status = GSS_S_UNAVAILABLE;
gss_release_buffer(&tmpMinor, &value);
}
gss_release_buffer(&tmpMinor, &display_value);
return major_status;
}
GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
gss_localname(OM_uint32 *minor_status,
gss_const_name_t pname,
const gss_OID mech_type,
gss_buffer_t localname)
{
OM_uint32 major_status = GSS_S_UNAVAILABLE;
struct _gss_name *name = (struct _gss_name *) pname;
struct _gss_mechanism_name *mn = NULL;
*minor_status = 0;
if (mech_type != GSS_C_NO_OID) {
major_status = _gss_find_mn(minor_status, name, mech_type, &mn);
if (GSS_ERROR(major_status))
return major_status;
major_status = mech_localname(minor_status, mn, localname);
if (major_status != GSS_S_COMPLETE)
major_status = attr_localname(minor_status, mn, localname);
} else {
HEIM_SLIST_FOREACH(mn, &name->gn_mn, gmn_link) {
major_status = mech_localname(minor_status, mn, localname);
if (major_status != GSS_S_COMPLETE)
major_status = attr_localname(minor_status, mn, localname);
if (major_status != GSS_S_UNAVAILABLE)
break;
}
}
if (major_status != GSS_S_COMPLETE && mn != NULL)
_gss_mg_error(mn->gmn_mech, major_status, *minor_status);
return major_status;
}
GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
gss_pname_to_uid(OM_uint32 *minor_status,
gss_const_name_t pname,
const gss_OID mech_type,
uid_t *uidp)
{
#ifdef NO_LOCALNAME
return GSS_S_UNAVAILABLE;
#else
OM_uint32 major, tmpMinor;
gss_buffer_desc localname = GSS_C_EMPTY_BUFFER;
char *szLocalname;
#ifdef POSIX_GETPWNAM_R
char pwbuf[2048];
struct passwd pw, *pwd;
#else
struct passwd *pwd;
#endif
major = gss_localname(minor_status, pname, mech_type, &localname);
if (GSS_ERROR(major))
return major;
if (localname.length == 0) {
*minor_status = KRB5_NO_LOCALNAME;
return GSS_S_FAILURE;
}
szLocalname = malloc(localname.length + 1);
if (szLocalname == NULL) {
gss_release_buffer(&tmpMinor, &localname);
*minor_status = ENOMEM;
return GSS_S_FAILURE;
}
memcpy(szLocalname, localname.value, localname.length);
szLocalname[localname.length] = '\0';
#ifdef POSIX_GETPWNAM_R
if (getpwnam_r(szLocalname, &pw, pwbuf, sizeof(pwbuf), &pwd) != 0)
pwd = NULL;
#else
pwd = getpwnam(szLocalname);
#endif
gss_release_buffer(&tmpMinor, &localname);
free(szLocalname);
*minor_status = 0;
if (pwd != NULL) {
*uidp = pwd->pw_uid;
major = GSS_S_COMPLETE;
} else {
major = GSS_S_UNAVAILABLE;
}
return major;
#endif
}
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