OpenSolaris_b135/lib/gss_mechs/mech_krb5/mech/import_name.c
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* Copyright 1993 by OpenVision Technologies, 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 OpenVision not be used
* in advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. OpenVision makes no
* representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*
* OPENVISION DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL OPENVISION 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.
*/
/*
* $Id: import_name.c 18015 2006-05-17 05:26:12Z raeburn $
*/
#include "gssapiP_krb5.h"
#ifndef NO_PASSWORD
#include <pwd.h>
#include <stdio.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#else
#include <strings.h>
#endif
/*
* errors:
* GSS_S_BAD_NAMETYPE if the type is bogus
* GSS_S_BAD_NAME if the type is good but the name is bogus
* GSS_S_FAILURE if memory allocation fails
*/
OM_uint32
krb5_gss_import_name(minor_status, input_name_buffer,
input_name_type, output_name)
OM_uint32 *minor_status;
gss_buffer_t input_name_buffer;
gss_OID input_name_type;
gss_name_t *output_name;
{
krb5_context context;
krb5_principal princ;
krb5_error_code code;
char *stringrep, *tmp, *tmp2, *cp;
OM_uint32 length;
#ifndef NO_PASSWORD
struct passwd *pw;
#endif
code = krb5_gss_init_context(&context);
if (code) {
*minor_status = code;
return GSS_S_FAILURE;
}
/* set up default returns */
*output_name = NULL;
*minor_status = 0;
/* Go find the appropriate string rep to pass into parse_name */
if ((input_name_type != GSS_C_NULL_OID) &&
(g_OID_equal(input_name_type, gss_nt_service_name) ||
g_OID_equal(input_name_type, gss_nt_service_name_v2))) {
char *service, *host;
if ((tmp =
(char *) xmalloc(input_name_buffer->length + 1)) == NULL) {
*minor_status = ENOMEM;
krb5_free_context(context);
return(GSS_S_FAILURE);
}
memcpy(tmp, input_name_buffer->value, input_name_buffer->length);
tmp[input_name_buffer->length] = 0;
service = tmp;
if ((host = strchr(tmp, '@'))) {
*host = '\0';
host++;
}
code = krb5_sname_to_principal(context, host, service, KRB5_NT_SRV_HST,
&princ);
xfree(tmp);
} else if ((input_name_type != GSS_C_NULL_OID) &&
(g_OID_equal(input_name_type, gss_nt_krb5_principal))) {
krb5_principal input;
if (input_name_buffer->length != sizeof(krb5_principal)) {
*minor_status = (OM_uint32) G_WRONG_SIZE;
krb5_free_context(context);
return(GSS_S_BAD_NAME);
}
input = *((krb5_principal *) input_name_buffer->value);
if ((code = krb5_copy_principal(context, input, &princ))) {
*minor_status = code;
krb5_free_context(context);
return(GSS_S_FAILURE);
}
} else {
#ifndef NO_PASSWORD
uid_t uid;
struct passwd pwx;
char pwbuf[BUFSIZ];
#endif
stringrep = NULL;
if ((tmp =
(char *) xmalloc(input_name_buffer->length + 1)) == NULL) {
*minor_status = ENOMEM;
krb5_free_context(context);
return(GSS_S_FAILURE);
}
tmp2 = 0;
memcpy(tmp, input_name_buffer->value, input_name_buffer->length);
tmp[input_name_buffer->length] = 0;
if ((input_name_type == GSS_C_NULL_OID) ||
g_OID_equal(input_name_type, gss_nt_krb5_name) ||
g_OID_equal(input_name_type, gss_nt_user_name)) {
stringrep = (char *) tmp;
#ifndef NO_PASSWORD
} else if (g_OID_equal(input_name_type, gss_nt_machine_uid_name)) {
uid = *(uid_t *) input_name_buffer->value;
do_getpwuid:
if (k5_getpwuid_r(uid, &pwx, pwbuf, sizeof(pwbuf), &pw) == 0)
stringrep = pw->pw_name;
else
*minor_status = (OM_uint32) G_NOUSER;
} else if (g_OID_equal(input_name_type, gss_nt_string_uid_name)) {
uid = atoi(tmp);
goto do_getpwuid;
#endif
} else if (g_OID_equal(input_name_type, gss_nt_exported_name)) {
cp = tmp;
if (*cp++ != 0x04)
goto fail_name;
if (*cp++ != 0x01)
goto fail_name;
if (*cp++ != 0x00)
goto fail_name;
length = *cp++;
if (length != gss_mech_krb5->length+2)
goto fail_name;
if (*cp++ != 0x06)
goto fail_name;
length = *cp++;
if (length != gss_mech_krb5->length)
goto fail_name;
if (memcmp(cp, gss_mech_krb5->elements, length) != 0)
goto fail_name;
cp += length;
length = *cp++;
length = (length << 8) | *cp++;
length = (length << 8) | *cp++;
length = (length << 8) | *cp++;
tmp2 = malloc(length+1);
if (tmp2 == NULL) {
xfree(tmp);
*minor_status = ENOMEM;
krb5_free_context(context);
return GSS_S_FAILURE;
}
strncpy(tmp2, cp, length);
tmp2[length] = 0;
stringrep = tmp2;
} else {
xfree(tmp);
krb5_free_context(context);
return(GSS_S_BAD_NAMETYPE);
}
/* at this point, stringrep is set, or if not, *minor_status is. */
if (stringrep)
code = krb5_parse_name(context, (char *) stringrep, &princ);
else {
fail_name:
xfree(tmp);
if (tmp2)
xfree(tmp2);
krb5_free_context(context);
return(GSS_S_BAD_NAME);
}
if (tmp2)
xfree(tmp2);
xfree(tmp);
}
/* at this point, a krb5 function has been called to set princ. code
contains the return status */
if (code) {
*minor_status = (OM_uint32) code;
krb5_free_context(context);
return(GSS_S_BAD_NAME);
}
/* save the name in the validation database */
if (! kg_save_name((gss_name_t) princ)) {
krb5_free_principal(context, princ);
krb5_free_context(context);
*minor_status = (OM_uint32) G_VALIDATE_FAILED;
return(GSS_S_FAILURE);
}
krb5_free_context(context);
/* return it */
*output_name = (gss_name_t) princ;
return(GSS_S_COMPLETE);
}