395 lines
13 KiB
C
395 lines
13 KiB
C
/* $Id$
|
|
*
|
|
* Lasso - A free implementation of the Liberty Alliance specifications.
|
|
*
|
|
* Copyright (C) 2004-2007 Entr'ouvert
|
|
* http://lasso.entrouvert.org
|
|
*
|
|
* Authors: See AUTHORS file in top-level directory.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#include "../xml/private.h"
|
|
#include "providerprivate.h"
|
|
#include "logoutprivate.h"
|
|
#include "profileprivate.h"
|
|
#include "federationprivate.h"
|
|
|
|
#include "../id-ff/providerprivate.h"
|
|
#include "../id-ff/logout.h"
|
|
#include "../id-ff/logoutprivate.h"
|
|
#include "../id-ff/sessionprivate.h"
|
|
#include "../id-ff/profileprivate.h"
|
|
#include "../id-ff/serverprivate.h"
|
|
#include "../id-ff/sessionprivate.h"
|
|
|
|
#include "../xml/xml_enc.h"
|
|
|
|
#include "../xml/saml-2.0/samlp2_logout_request.h"
|
|
#include "../xml/saml-2.0/samlp2_logout_response.h"
|
|
#include "../xml/saml-2.0/saml2_assertion.h"
|
|
#include "../xml/saml-2.0/saml2_authn_statement.h"
|
|
#include "../utils.h"
|
|
|
|
static void check_soap_support(gchar *key, LassoProvider *provider, LassoProfile *profile);
|
|
|
|
int
|
|
lasso_saml20_logout_init_request(LassoLogout *logout, LassoProvider *remote_provider,
|
|
LassoHttpMethod http_method)
|
|
{
|
|
LassoProfile *profile = &logout->parent;
|
|
LassoSession *session = NULL;
|
|
LassoSamlp2LogoutRequest *logout_request = NULL;
|
|
GList *name_ids = NULL;
|
|
LassoSaml2NameID *name_id = NULL;
|
|
int rc = 0;
|
|
|
|
logout_request = (LassoSamlp2LogoutRequest*) lasso_samlp2_logout_request_new();
|
|
|
|
lasso_check_good_rc(lasso_saml20_profile_init_request(profile,
|
|
remote_provider->ProviderID,
|
|
FALSE,
|
|
&logout_request->parent,
|
|
http_method,
|
|
LASSO_MD_PROTOCOL_TYPE_SINGLE_LOGOUT));
|
|
|
|
/* session existence has been checked in id-ff/ */
|
|
session = lasso_profile_get_session(profile);
|
|
name_ids = lasso_session_get_name_ids(session, profile->remote_providerID);
|
|
if (!name_ids || ! LASSO_IS_SAML2_NAME_ID(name_ids->data)) {
|
|
goto_cleanup_with_rc(LASSO_PROFILE_ERROR_MISSING_ASSERTION);
|
|
}
|
|
name_id = name_ids->data; /* take the first */
|
|
|
|
/* Set the NameID */
|
|
lasso_assign_gobject(logout_request->NameID, name_id);
|
|
|
|
/* Encrypt NameID */
|
|
if (lasso_provider_get_encryption_mode(remote_provider) == LASSO_ENCRYPTION_MODE_NAMEID) {
|
|
lasso_check_good_rc(lasso_saml20_profile_setup_encrypted_node(remote_provider,
|
|
(LassoNode**)&logout_request->NameID,
|
|
(LassoNode**)&logout_request->EncryptedID));
|
|
}
|
|
|
|
/* set the session index if one is found */
|
|
{
|
|
GList *session_indexes = lasso_session_get_session_indexes(profile->session,
|
|
remote_provider->ProviderID,
|
|
&name_id->parent);
|
|
lasso_samlp2_logout_request_set_session_indexes(logout_request, session_indexes);
|
|
lasso_release_list_of_strings(session_indexes);
|
|
}
|
|
|
|
cleanup:
|
|
lasso_release_list_of_gobjects(name_ids);
|
|
lasso_release_gobject(logout_request);
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
lasso_saml20_logout_build_request_msg(LassoLogout *logout)
|
|
{
|
|
LassoProfile *profile = &logout->parent;
|
|
|
|
return lasso_saml20_profile_build_request_msg(profile, "SingleLogoutService",
|
|
logout->parent.http_request_method, NULL);
|
|
}
|
|
|
|
int
|
|
lasso_saml20_logout_process_request_msg(LassoLogout *logout, char *request_msg)
|
|
{
|
|
LassoProfile *profile = NULL;
|
|
LassoSamlp2LogoutRequest *logout_request = NULL;
|
|
int rc1 = 0, rc2 = 0, rc = 0;
|
|
|
|
lasso_bad_param(LOGOUT, logout);
|
|
lasso_null_param(request_msg);
|
|
|
|
profile = LASSO_PROFILE(logout);
|
|
logout_request = (LassoSamlp2LogoutRequest*) lasso_samlp2_logout_request_new();
|
|
rc1 = lasso_saml20_profile_process_any_request(profile, (LassoNode*)logout_request,
|
|
request_msg);
|
|
goto_cleanup_if_fail_with_rc(rc1 == 0, rc1);
|
|
|
|
/* remember initial request method, for setting it for generating response */
|
|
logout->initial_http_request_method = profile->http_request_method;
|
|
rc2 = lasso_saml20_profile_process_name_identifier_decryption(profile,
|
|
&logout_request->NameID,
|
|
&logout_request->EncryptedID);
|
|
goto_cleanup_if_fail_with_rc(rc2 == 0, rc2);
|
|
lasso_check_good_rc(lasso_saml20_profile_check_signature_status(profile));
|
|
|
|
cleanup:
|
|
lasso_release_gobject(logout_request);
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
lasso_saml20_logout_validate_request(LassoLogout *logout)
|
|
{
|
|
LassoProfile *profile = &logout->parent;
|
|
LassoProvider *remote_provider = NULL;
|
|
LassoSamlp2StatusResponse *response = NULL;
|
|
LassoSaml2NameID *name_id = NULL;
|
|
LassoSamlp2LogoutRequest *logout_request = NULL;
|
|
GList *local_session_indexes = NULL;
|
|
GList *logout_session_indexes = NULL;
|
|
int rc = 0;
|
|
|
|
goto_cleanup_if_fail_with_rc(LASSO_IS_SAMLP2_LOGOUT_REQUEST(profile->request),
|
|
LASSO_PROFILE_ERROR_MISSING_REQUEST);
|
|
logout_request = (LassoSamlp2LogoutRequest*)profile->request;
|
|
|
|
/* check the issuer */
|
|
lasso_assign_string(profile->remote_providerID,
|
|
logout_request->parent.Issuer->content);
|
|
remote_provider = lasso_server_get_provider(profile->server, profile->remote_providerID);
|
|
goto_cleanup_if_fail_with_rc(LASSO_IS_PROVIDER(remote_provider),
|
|
LASSO_SERVER_ERROR_PROVIDER_NOT_FOUND);
|
|
|
|
/* create the response */
|
|
response = (LassoSamlp2StatusResponse*)lasso_samlp2_logout_response_new();
|
|
lasso_check_good_rc(lasso_saml20_profile_init_response(profile, response,
|
|
LASSO_SAML2_STATUS_CODE_SUCCESS, NULL));
|
|
|
|
/* Get the name identifier */
|
|
name_id = LASSO_SAMLP2_LOGOUT_REQUEST(profile->request)->NameID;
|
|
if (name_id == NULL) {
|
|
lasso_saml20_profile_set_response_status_responder(
|
|
profile, LASSO_LIB_STATUS_CODE_FEDERATION_DOES_NOT_EXIST);
|
|
goto_cleanup_with_rc(LASSO_PROFILE_ERROR_NAME_IDENTIFIER_NOT_FOUND);
|
|
}
|
|
|
|
if (profile->session == NULL) {
|
|
lasso_saml20_profile_set_response_status_responder(profile,
|
|
LASSO_SAML2_STATUS_CODE_REQUEST_DENIED);
|
|
goto_cleanup_with_rc(LASSO_PROFILE_ERROR_SESSION_NOT_FOUND);
|
|
}
|
|
|
|
/* verify authentication */
|
|
if (profile->session) {
|
|
local_session_indexes = lasso_session_get_session_indexes(profile->session,
|
|
profile->remote_providerID, &name_id->parent);
|
|
}
|
|
if (! local_session_indexes) {
|
|
lasso_saml20_profile_set_response_status_responder(profile,
|
|
LASSO_SAML2_STATUS_CODE_REQUEST_DENIED);
|
|
return LASSO_PROFILE_ERROR_MISSING_ASSERTION;
|
|
}
|
|
|
|
/* verify session index */
|
|
if (remote_provider->role == LASSO_PROVIDER_ROLE_IDP && logout_request->SessionIndex == NULL) {
|
|
/* ok, no SessionIndex from IdP, all sessions logout */
|
|
} else {
|
|
GList *i, *j;
|
|
int ok = 0;
|
|
|
|
logout_session_indexes = lasso_samlp2_logout_request_get_session_indexes(logout_request);
|
|
|
|
lasso_foreach(i, logout_session_indexes) {
|
|
lasso_foreach(j, local_session_indexes) {
|
|
if (lasso_strisequal((char*)i->data, (char*)j->data)) {
|
|
ok = 1;
|
|
}
|
|
}
|
|
}
|
|
if (! ok) {
|
|
lasso_saml20_profile_set_response_status_responder(profile,
|
|
LASSO_SAML2_STATUS_CODE_REQUEST_DENIED);
|
|
goto_cleanup_with_rc(LASSO_LOGOUT_ERROR_UNKNOWN_PRINCIPAL);
|
|
}
|
|
}
|
|
|
|
/* if SOAP request method at IDP then verify all the remote service providers support
|
|
SOAP protocol profile. If one remote authenticated principal service provider doesn't
|
|
support SOAP then return UnsupportedProfile to original service provider */
|
|
if (remote_provider->role == LASSO_PROVIDER_ROLE_SP &&
|
|
profile->http_request_method == LASSO_HTTP_METHOD_SOAP) {
|
|
|
|
logout->private_data->all_soap = TRUE;
|
|
g_hash_table_foreach(profile->server->providers,
|
|
(GHFunc)check_soap_support, profile);
|
|
|
|
if (logout->private_data->all_soap == FALSE) {
|
|
lasso_saml20_profile_set_response_status_responder(profile,
|
|
LASSO_LIB_STATUS_CODE_UNSUPPORTED_PROFILE);
|
|
goto_cleanup_with_rc(LASSO_LOGOUT_ERROR_UNSUPPORTED_PROFILE);
|
|
}
|
|
}
|
|
|
|
/* everything is ok, remove assertion */
|
|
lasso_session_remove_assertion(profile->session, profile->remote_providerID);
|
|
|
|
/* if at IDP and nb sp logged > 1, then backup remote provider id,
|
|
* request and response
|
|
*/
|
|
if (remote_provider->role == LASSO_PROVIDER_ROLE_SP &&
|
|
lasso_session_count_assertions(profile->session) >= 1) {
|
|
lasso_transfer_string(logout->initial_remote_providerID,
|
|
profile->remote_providerID);
|
|
lasso_transfer_gobject(logout->initial_request, profile->request);
|
|
lasso_transfer_gobject(logout->initial_response, profile->response);
|
|
}
|
|
|
|
cleanup:
|
|
lasso_release_gobject(response);
|
|
lasso_release_list_of_strings(local_session_indexes);
|
|
lasso_release_list_of_strings(logout_session_indexes);
|
|
return rc;
|
|
}
|
|
|
|
static void
|
|
check_soap_support(G_GNUC_UNUSED gchar *key, LassoProvider *provider, LassoProfile *profile)
|
|
{
|
|
const GList *supported_profiles;
|
|
|
|
if (strcmp(provider->ProviderID, profile->remote_providerID) == 0)
|
|
return; /* original service provider (initiated logout) */
|
|
|
|
if (! lasso_session_has_slo_session(profile->session, provider->ProviderID)) {
|
|
return;
|
|
}
|
|
supported_profiles = lasso_provider_get_metadata_list(provider,
|
|
"SingleLogoutService SOAP");
|
|
if (supported_profiles)
|
|
return; /* provider support profile */
|
|
|
|
LASSO_LOGOUT(profile)->private_data->all_soap = FALSE;
|
|
}
|
|
|
|
|
|
/* If at IDP and if there is no more assertion, IDP has logged out every SPs, return the initial
|
|
* response to initial SP. Caution: We can't use the test (remote_provider->role ==
|
|
* LASSO_PROVIDER_ROLE_SP) to know whether the server is acting as an IDP or a SP, because it can be
|
|
* a proxy. So we have to use the role of the initial remote provider instead.
|
|
*/
|
|
static void
|
|
lasso_saml20_logout_restore_initial_state(LassoLogout *logout) {
|
|
LassoProfile *profile = &logout->parent;
|
|
|
|
if (logout->initial_remote_providerID) {
|
|
lasso_transfer_string(profile->remote_providerID,
|
|
logout->initial_remote_providerID);
|
|
lasso_transfer_gobject(profile->request, logout->initial_request);
|
|
lasso_transfer_gobject(profile->response, logout->initial_response);
|
|
/* if some of the logout failed, set a partial logout status code */
|
|
if (logout->private_data->partial_logout ||
|
|
lasso_session_count_assertions(profile->session) > 0) {
|
|
/* reset the partial logout status */
|
|
logout->private_data->partial_logout = FALSE;
|
|
lasso_saml20_profile_set_response_status(profile,
|
|
LASSO_SAML2_STATUS_CODE_SUCCESS,
|
|
LASSO_SAML2_STATUS_CODE_PARTIAL_LOGOUT);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
int
|
|
lasso_saml20_logout_build_response_msg(LassoLogout *logout)
|
|
{
|
|
LassoProfile *profile = LASSO_PROFILE(logout);
|
|
LassoSamlp2StatusResponse *response = NULL;
|
|
int rc = 0;
|
|
|
|
/* SP initiated logout */
|
|
lasso_saml20_logout_restore_initial_state(logout);
|
|
|
|
if (! LASSO_IS_SAMLP2_STATUS_RESPONSE(profile->response)) {
|
|
/* no response set here means request denied */
|
|
response = (LassoSamlp2StatusResponse*) lasso_samlp2_logout_response_new();
|
|
/* verify signature status */
|
|
if (lasso_saml20_profile_check_signature_status(profile) != 0) {
|
|
lasso_check_good_rc(lasso_saml20_profile_init_response(profile, response,
|
|
LASSO_SAML2_STATUS_CODE_REQUESTER,
|
|
LASSO_LIB_STATUS_CODE_INVALID_SIGNATURE));
|
|
} else {
|
|
lasso_check_good_rc(lasso_saml20_profile_init_response(profile, response,
|
|
LASSO_SAML2_STATUS_CODE_RESPONDER,
|
|
LASSO_SAML2_STATUS_CODE_REQUEST_DENIED));
|
|
}
|
|
}
|
|
|
|
/* build logout response message */
|
|
/* FIXME: should allow to override default response method, should just match that
|
|
* request/response are of the same type synchronous or asynchronous */
|
|
rc = lasso_saml20_profile_build_response_msg(profile, "SingleLogoutService",
|
|
logout->initial_http_request_method, NULL);
|
|
|
|
cleanup:
|
|
lasso_release_gobject(response);
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
lasso_saml20_logout_process_response_msg(LassoLogout *logout, const char *response_msg)
|
|
{
|
|
LassoProfile *profile = &logout->parent;
|
|
LassoHttpMethod response_method;
|
|
LassoProvider *remote_provider = NULL;
|
|
LassoSamlp2StatusResponse *response = NULL;
|
|
int rc = 0;
|
|
|
|
response = (LassoSamlp2StatusResponse*) lasso_samlp2_logout_response_new();
|
|
lasso_check_good_rc(lasso_saml20_profile_process_any_response(profile, response,
|
|
&response_method, response_msg));
|
|
|
|
/* only if asked we report, otherwise we do not care */
|
|
if (profile->signature_status && lasso_profile_get_signature_verify_hint(profile) ==
|
|
(LassoProfileSignatureVerifyHint)LASSO_PROFILE_SIGNATURE_HINT_FORCE)
|
|
{
|
|
goto_cleanup_with_rc(profile->signature_status);
|
|
}
|
|
|
|
remote_provider = lasso_server_get_provider(logout->parent.server,
|
|
logout->parent.remote_providerID);
|
|
goto_cleanup_if_fail_with_rc(LASSO_IS_PROVIDER(remote_provider),
|
|
LASSO_SERVER_ERROR_PROVIDER_NOT_FOUND);
|
|
cleanup:
|
|
/* Not Success find finer error */
|
|
while (rc == LASSO_PROFILE_ERROR_STATUS_NOT_SUCCESS) {
|
|
LassoSamlp2StatusCode *sub_status_code;
|
|
char *value;
|
|
|
|
logout->private_data->partial_logout = TRUE;
|
|
sub_status_code = response->Status->StatusCode->StatusCode;
|
|
if (! sub_status_code)
|
|
break;
|
|
|
|
value = sub_status_code->Value;
|
|
|
|
if (lasso_strisequal(value,LASSO_SAML2_STATUS_CODE_PARTIAL_LOGOUT)) {
|
|
rc = LASSO_LOGOUT_ERROR_PARTIAL_LOGOUT;
|
|
break;
|
|
}
|
|
if (lasso_strisequal(value,LASSO_SAML2_STATUS_CODE_REQUEST_DENIED)) {
|
|
rc = LASSO_LOGOUT_ERROR_REQUEST_DENIED;
|
|
break;
|
|
}
|
|
if (lasso_strisequal(value,LASSO_SAML2_STATUS_CODE_UNKNOWN_PRINCIPAL)) {
|
|
rc = LASSO_LOGOUT_ERROR_UNKNOWN_PRINCIPAL;
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
if (lasso_session_count_assertions(profile->session) == 0) {
|
|
lasso_saml20_logout_restore_initial_state(logout);
|
|
}
|
|
lasso_release_gobject(response);
|
|
return rc;
|
|
|
|
}
|