/* #pragma ident "@(#)g_acquire_cred.c 1.22 04/02/23 SMI" */
/*
* 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 routine for gss_acquire_cred_with_password
*/
#include "mglueP.h"
#include <stdio.h>
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#include <string.h>
#include <errno.h>
#include <time.h>
static OM_uint32
val_acq_cred_pw_args(
OM_uint32 *minor_status,
const gss_name_t desired_name,
const gss_buffer_t password,
OM_uint32 time_req,
const gss_OID_set desired_mechs,
int cred_usage,
gss_cred_id_t *output_cred_handle,
gss_OID_set *actual_mechs,
OM_uint32 *time_rec)
{
/* Initialize outputs. */
if (minor_status != NULL)
*minor_status = 0;
if (output_cred_handle != NULL)
*output_cred_handle = GSS_C_NO_CREDENTIAL;
if (actual_mechs != NULL)
*actual_mechs = GSS_C_NULL_OID_SET;
if (time_rec != NULL)
*time_rec = 0;
/* Validate arguments. */
if (desired_name == GSS_C_NO_NAME)
return (GSS_S_BAD_NAME);
if (minor_status == NULL)
return (GSS_S_CALL_INACCESSIBLE_WRITE);
if (output_cred_handle == NULL)
return (GSS_S_CALL_INACCESSIBLE_WRITE);
if (cred_usage != GSS_C_ACCEPT
&& cred_usage != GSS_C_INITIATE
&& cred_usage != GSS_C_BOTH) {
if (minor_status) {
*minor_status = EINVAL;
map_errcode(minor_status);
}
return GSS_S_FAILURE;
}
if (password == GSS_C_NO_BUFFER ||
password->length == 0 ||
password->value == NULL) {
if (minor_status) {
*minor_status = EINVAL;
map_errcode(minor_status);
}
return GSS_S_FAILURE;
}
return (GSS_S_COMPLETE);
}
OM_uint32 KRB5_CALLCONV
gss_acquire_cred_with_password(
minor_status,
desired_name,
password,
time_req,
desired_mechs,
cred_usage,
output_cred_handle,
actual_mechs,
time_rec)
OM_uint32 * minor_status;
const gss_name_t desired_name;
const gss_buffer_t password;
OM_uint32 time_req;
const gss_OID_set desired_mechs;
int cred_usage;
gss_cred_id_t * output_cred_handle;
gss_OID_set * actual_mechs;
OM_uint32 * time_rec;
{
OM_uint32 major = GSS_S_FAILURE;
OM_uint32 initTimeOut, acceptTimeOut, outTime = GSS_C_INDEFINITE;
gss_OID_set_desc default_OID_set;
gss_OID_set mechs;
gss_OID_desc default_OID;
gss_mechanism mech;
unsigned int i;
gss_union_cred_t creds;
major = val_acq_cred_pw_args(minor_status,
desired_name,
password,
time_req,
desired_mechs,
cred_usage,
output_cred_handle,
actual_mechs,
time_rec);
if (major != GSS_S_COMPLETE)
return (major);
/* Initial value needed below. */
major = GSS_S_FAILURE;
/*
* if desired_mechs equals GSS_C_NULL_OID_SET, then pick an
* appropriate default. We use the first mechanism in the
* mechansim list as the default. This set is created with
* statics thus needs not be freed
*/
if(desired_mechs == GSS_C_NULL_OID_SET) {
mech = gssint_get_mechanism(NULL);
if (mech == NULL)
return (GSS_S_BAD_MECH);
mechs = &default_OID_set;
default_OID_set.count = 1;
default_OID_set.elements = &default_OID;
default_OID.length = mech->mech_type.length;
default_OID.elements = mech->mech_type.elements;
} else
mechs = desired_mechs;
if (mechs->count == 0)
return (GSS_S_BAD_MECH);
/* allocate the output credential structure */
creds = (gss_union_cred_t)malloc(sizeof (gss_union_cred_desc));
if (creds == NULL)
return (GSS_S_FAILURE);
/* initialize to 0s */
(void) memset(creds, 0, sizeof (gss_union_cred_desc));
creds->loopback = creds;
/* for each requested mech attempt to obtain a credential */
for (i = 0; i < mechs->count; i++) {
major = gss_add_cred_with_password(minor_status, (gss_cred_id_t)creds,
desired_name,
&mechs->elements[i],
password,
cred_usage, time_req, time_req, NULL,
NULL, &initTimeOut, &acceptTimeOut);
if (major == GSS_S_COMPLETE) {
/* update the credential's time */
if (cred_usage == GSS_C_ACCEPT) {
if (outTime > acceptTimeOut)
outTime = acceptTimeOut;
} else if (cred_usage == GSS_C_INITIATE) {
if (outTime > initTimeOut)
outTime = initTimeOut;
} else {
/*
* time_rec is the lesser of the
* init/accept times
*/
if (initTimeOut > acceptTimeOut)
outTime = (outTime > acceptTimeOut) ?
acceptTimeOut : outTime;
else
outTime = (outTime > initTimeOut) ?
initTimeOut : outTime;
}
}
} /* for */
/* ensure that we have at least one credential element */
if (creds->count < 1) {
free(creds);
return (major);
}
/*
* fill in output parameters
* setup the actual mechs output parameter
*/
if (actual_mechs != NULL) {
major = gssint_make_public_oid_set(minor_status, creds->mechs_array,
creds->count, actual_mechs);
if (GSS_ERROR(major)) {
(void) gss_release_cred(minor_status,
(gss_cred_id_t *)&creds);
return (major);
}
}
if (time_rec)
*time_rec = outTime;
creds->loopback = creds;
*output_cred_handle = (gss_cred_id_t)creds;
return (GSS_S_COMPLETE);
}
static OM_uint32
val_add_cred_pw_args(
OM_uint32 *minor_status,
gss_cred_id_t input_cred_handle,
const gss_name_t desired_name,
const gss_OID desired_mech,
const gss_buffer_t password,
gss_cred_usage_t cred_usage,
OM_uint32 initiator_time_req,
OM_uint32 acceptor_time_req,
gss_cred_id_t *output_cred_handle,
gss_OID_set *actual_mechs,
OM_uint32 *initiator_time_rec,
OM_uint32 *acceptor_time_rec)
{
/* Initialize outputs. */
if (minor_status != NULL)
*minor_status = 0;
if (output_cred_handle != NULL)
*output_cred_handle = GSS_C_NO_CREDENTIAL;
if (actual_mechs != NULL)
*actual_mechs = GSS_C_NO_OID_SET;
if (acceptor_time_rec != NULL)
*acceptor_time_rec = 0;
if (initiator_time_rec != NULL)
*initiator_time_rec = 0;
/* Validate arguments. */
if (desired_name == GSS_C_NO_NAME)
return (GSS_S_BAD_NAME);
if (minor_status == NULL)
return (GSS_S_CALL_INACCESSIBLE_WRITE);
if (input_cred_handle == GSS_C_NO_CREDENTIAL &&
output_cred_handle == NULL)
return (GSS_S_CALL_INACCESSIBLE_WRITE | GSS_S_NO_CRED);
if (cred_usage != GSS_C_ACCEPT
&& cred_usage != GSS_C_INITIATE
&& cred_usage != GSS_C_BOTH) {
if (minor_status) {
*minor_status = EINVAL;
map_errcode(minor_status);
}
return GSS_S_FAILURE;
}
if (password == GSS_C_NO_BUFFER ||
password->length == 0 ||
password->value == NULL) {
if (minor_status) {
*minor_status = EINVAL;
map_errcode(minor_status);
}
return GSS_S_FAILURE;
}
return (GSS_S_COMPLETE);
}
/* V2 KRB5_CALLCONV */
OM_uint32 KRB5_CALLCONV
gss_add_cred_with_password(minor_status, input_cred_handle,
desired_name, desired_mech, password, cred_usage,
initiator_time_req, acceptor_time_req,
output_cred_handle, actual_mechs,
initiator_time_rec, acceptor_time_rec)
OM_uint32 *minor_status;
const gss_cred_id_t input_cred_handle;
const gss_name_t desired_name;
const gss_OID desired_mech;
const gss_buffer_t password;
gss_cred_usage_t cred_usage;
OM_uint32 initiator_time_req;
OM_uint32 acceptor_time_req;
gss_cred_id_t *output_cred_handle;
gss_OID_set *actual_mechs;
OM_uint32 *initiator_time_rec;
OM_uint32 *acceptor_time_rec;
{
OM_uint32 status, temp_minor_status;
OM_uint32 time_req, time_rec;
gss_union_name_t union_name;
gss_union_cred_t new_union_cred, union_cred;
gss_name_t internal_name = GSS_C_NO_NAME;
gss_name_t allocated_name = GSS_C_NO_NAME;
gss_mechanism mech;
gss_cred_id_t cred = NULL;
gss_OID new_mechs_array = NULL;
gss_cred_id_t * new_cred_array = NULL;
gss_OID_set target_mechs = GSS_C_NO_OID_SET;
gss_OID selected_mech = GSS_C_NO_OID;
status = val_add_cred_pw_args(minor_status,
input_cred_handle,
desired_name,
desired_mech,
password,
cred_usage,
initiator_time_req,
acceptor_time_req,
output_cred_handle,
actual_mechs,
initiator_time_rec,
acceptor_time_rec);
if (status != GSS_S_COMPLETE)
return (status);
status = gssint_select_mech_type(minor_status, desired_mech,
&selected_mech);
if (status != GSS_S_COMPLETE)
return (status);
mech = gssint_get_mechanism(selected_mech);
if (!mech)
return GSS_S_BAD_MECH;
if (!mech->gssspi_acquire_cred_with_password)
return GSS_S_UNAVAILABLE;
if (input_cred_handle == GSS_C_NO_CREDENTIAL) {
union_cred = malloc(sizeof (gss_union_cred_desc));
if (union_cred == NULL)
return (GSS_S_FAILURE);
(void) memset(union_cred, 0, sizeof (gss_union_cred_desc));
/* for default credentials we will use GSS_C_NO_NAME */
internal_name = GSS_C_NO_NAME;
} else {
union_cred = (gss_union_cred_t)input_cred_handle;
if (gssint_get_mechanism_cred(union_cred, selected_mech) !=
GSS_C_NO_CREDENTIAL)
return (GSS_S_DUPLICATE_ELEMENT);
}
/* may need to create a mechanism specific name */
union_name = (gss_union_name_t)desired_name;
if (union_name->mech_type &&
g_OID_equal(union_name->mech_type, selected_mech))
internal_name = union_name->mech_name;
else {
if (gssint_import_internal_name(minor_status,
selected_mech, union_name,
&allocated_name) != GSS_S_COMPLETE)
return (GSS_S_BAD_NAME);
internal_name = allocated_name;
}
if (cred_usage == GSS_C_ACCEPT)
time_req = acceptor_time_req;
else if (cred_usage == GSS_C_INITIATE)
time_req = initiator_time_req;
else if (cred_usage == GSS_C_BOTH)
time_req = (acceptor_time_req > initiator_time_req) ?
acceptor_time_req : initiator_time_req;
else
time_req = 0;
status = gss_create_empty_oid_set(minor_status, &target_mechs);
if (status != GSS_S_COMPLETE)
goto errout;
status = gss_add_oid_set_member(minor_status,
gssint_get_public_oid(selected_mech),
&target_mechs);
if (status != GSS_S_COMPLETE)
goto errout;
status = mech->gssspi_acquire_cred_with_password(minor_status,
internal_name,
password,
time_req,
target_mechs,
cred_usage,
&cred,
NULL,
&time_rec);
if (status != GSS_S_COMPLETE) {
map_error(minor_status, mech);
goto errout;
}
/* now add the new credential elements */
new_mechs_array = (gss_OID)
malloc(sizeof (gss_OID_desc) * (union_cred->count+1));
new_cred_array = (gss_cred_id_t *)
malloc(sizeof (gss_cred_id_t) * (union_cred->count+1));
if (!new_mechs_array || !new_cred_array) {
status = GSS_S_FAILURE;
goto errout;
}
if (acceptor_time_rec)
if (cred_usage == GSS_C_ACCEPT || cred_usage == GSS_C_BOTH)
*acceptor_time_rec = time_rec;
if (initiator_time_rec)
if (cred_usage == GSS_C_INITIATE || cred_usage == GSS_C_BOTH)
*initiator_time_rec = time_rec;
/*
* OK, expand the mechanism array and the credential array
*/
(void) memcpy(new_mechs_array, union_cred->mechs_array,
sizeof (gss_OID_desc) * union_cred->count);
(void) memcpy(new_cred_array, union_cred->cred_array,
sizeof (gss_cred_id_t) * union_cred->count);
new_cred_array[union_cred->count] = cred;
if ((new_mechs_array[union_cred->count].elements =
malloc(selected_mech->length)) == NULL)
goto errout;
g_OID_copy(&new_mechs_array[union_cred->count], selected_mech);
if (actual_mechs != NULL) {
status = gssint_make_public_oid_set(minor_status, new_mechs_array,
union_cred->count + 1,
actual_mechs);
if (GSS_ERROR(status)) {
free(new_mechs_array[union_cred->count].elements);
goto errout;
}
}
if (output_cred_handle == NULL) {
free(union_cred->mechs_array);
free(union_cred->cred_array);
new_union_cred = union_cred;
} else {
new_union_cred = malloc(sizeof (gss_union_cred_desc));
if (new_union_cred == NULL) {
free(new_mechs_array[union_cred->count].elements);
goto errout;
}
*new_union_cred = *union_cred;
*output_cred_handle = (gss_cred_id_t)new_union_cred;
}
new_union_cred->mechs_array = new_mechs_array;
new_union_cred->cred_array = new_cred_array;
new_union_cred->count++;
new_union_cred->loopback = new_union_cred;
/* We're done with the internal name. Free it if we allocated it. */
if (allocated_name)
(void) gssint_release_internal_name(&temp_minor_status,
selected_mech,
&allocated_name);
if (target_mechs)
(void)gss_release_oid_set(&temp_minor_status, &target_mechs);
return (GSS_S_COMPLETE);
errout:
if (new_mechs_array)
free(new_mechs_array);
if (new_cred_array)
free(new_cred_array);
if (cred != NULL && mech->gss_release_cred)
mech->gss_release_cred(&temp_minor_status, &cred);
if (allocated_name)
(void) gssint_release_internal_name(&temp_minor_status,
selected_mech, &allocated_name);
if (target_mechs)
(void)gss_release_oid_set(&temp_minor_status, &target_mechs);
if (input_cred_handle == GSS_C_NO_CREDENTIAL && union_cred)
free(union_cred);
return (status);
}