449 lines
13 KiB
C
449 lines
13 KiB
C
/* $Id$
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*
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* Lasso - A free implementation of the Liberty Alliance specifications.
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*
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* Copyright (C) 2004 Entr'ouvert
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* http://lasso.entrouvert.org
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*
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* Authors: Nicolas Clapies <nclapies@entrouvert.com>
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* Valery Febvre <vfebvre@easter-eggs.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <lasso/environs/session.h>
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#define LASSO_SESSION_NODE "LassoSession"
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#define LASSO_SESSION_ASSERTIONS_NODE "LassoAssertions"
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#define LASSO_SESSION_ASSERTION_NODE "LassoAssertion"
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#define LASSO_SESSION_REMOTE_PROVIDERID_ATTR "RemoteProviderID"
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struct _LassoSessionPrivate
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{
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gboolean dispose_has_run;
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};
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static GObjectClass *parent_class = NULL;
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/*****************************************************************************/
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/* private functions */
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/*****************************************************************************/
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static void
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lasso_session_copy_assertion(gpointer key,
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gpointer value,
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gpointer assertions)
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{
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g_hash_table_insert((GHashTable *)assertions, g_strdup((gchar *)key),
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lasso_node_copy(LASSO_NODE(value)));
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}
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static void
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lasso_session_dump_assertion(gpointer key,
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gpointer value,
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LassoNode *assertions)
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{
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LassoNode *assertion_node, *assertion_copy;
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LassoNodeClass *assertion_class, *assertions_class;
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/* new lasso assertion node */
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assertion_node = lasso_node_new();
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assertion_class = LASSO_NODE_GET_CLASS(assertion_node);
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assertion_class->set_name(assertion_node, LASSO_SESSION_ASSERTION_NODE);
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/* set the remote provider id */
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assertion_class->set_prop(assertion_node, LASSO_SESSION_REMOTE_PROVIDERID_ATTR, key);
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/* set assertion node */
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assertion_copy = lasso_node_copy(LASSO_NODE(value));
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assertion_class->add_child(assertion_node, assertion_copy, FALSE);
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lasso_node_destroy(assertion_copy);
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/* add lasso assertion node to lasso assertions node */
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assertions_class = LASSO_NODE_GET_CLASS(assertions);
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assertions_class->add_child(assertions, assertion_node, TRUE);
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lasso_node_destroy(assertion_node);
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}
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/*****************************************************************************/
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/* public methods */
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/*****************************************************************************/
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gint
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lasso_session_add_assertion(LassoSession *session,
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gchar *remote_providerID,
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LassoNode *assertion)
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{
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int i;
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gboolean found = FALSE;
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g_return_val_if_fail(session != NULL, -1);
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g_return_val_if_fail(remote_providerID != NULL, -2);
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g_return_val_if_fail(assertion != NULL, -3);
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/* add the remote provider id */
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for(i = 0; i<session->providerIDs->len; i++) {
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if(xmlStrEqual(remote_providerID, g_ptr_array_index(session->providerIDs, i))) {
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found = TRUE;
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break;
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}
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}
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if(found == TRUE) {
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message(G_LOG_LEVEL_CRITICAL, "An assertion existed already for this providerID, it was replaced by the new one.\n");
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}
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else {
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g_ptr_array_add(session->providerIDs, g_strdup(remote_providerID));
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}
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/* add the assertion */
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g_hash_table_insert(session->assertions, g_strdup(remote_providerID),
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lasso_node_copy(assertion));
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session->is_dirty = TRUE;
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return(0);
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}
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LassoSession*
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lasso_session_copy(LassoSession *session)
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{
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LassoSession *copy;
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guint i;
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if (session == NULL) {
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return(NULL);
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}
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copy = LASSO_SESSION(g_object_new(LASSO_TYPE_SESSION, NULL));
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copy->providerIDs = g_ptr_array_new();
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for(i=0; i<session->providerIDs->len; i++) {
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g_ptr_array_add(copy->providerIDs,
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g_strdup(g_ptr_array_index(session->providerIDs, i)));
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}
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copy->assertions = g_hash_table_new_full(g_str_hash, g_str_equal,
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(GDestroyNotify)g_free,
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(GDestroyNotify)lasso_node_destroy);
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g_hash_table_foreach(session->assertions, (GHFunc)lasso_session_copy_assertion,
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(gpointer)copy->assertions);
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copy->is_dirty = session->is_dirty;
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return(copy);
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}
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void
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lasso_session_destroy(LassoSession *session)
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{
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if (LASSO_IS_SESSION(session)) {
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g_object_unref(G_OBJECT(session));
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}
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}
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gchar*
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lasso_session_dump(LassoSession *session)
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{
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LassoNode *session_node, *assertions_node;
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LassoNodeClass *session_class, *assertions_class;
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int table_size;
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xmlChar *dump;
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g_return_val_if_fail(session != NULL, NULL);
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session_node = lasso_node_new();
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session_class = LASSO_NODE_GET_CLASS(session_node);
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session_class->set_name(session_node, LASSO_SESSION_NODE);
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/* dump the assertions */
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table_size = g_hash_table_size(session->assertions);
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if (table_size > 0) {
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assertions_node = lasso_node_new();
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assertions_class = LASSO_NODE_GET_CLASS(assertions_node);
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assertions_class->set_name(assertions_node, LASSO_SESSION_ASSERTIONS_NODE);
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g_hash_table_foreach(session->assertions, (GHFunc)lasso_session_dump_assertion,
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assertions_node);
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session_class->add_child(session_node, assertions_node, FALSE);
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lasso_node_destroy(assertions_node);
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}
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dump = lasso_node_export(session_node);
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lasso_node_destroy(session_node);
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return(dump);
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}
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LassoNode*
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lasso_session_get_assertion(LassoSession *session,
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gchar *remote_providerID)
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{
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LassoNode *assertion;
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g_return_val_if_fail(session != NULL, NULL);
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g_return_val_if_fail(remote_providerID != NULL, NULL);
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assertion = (LassoNode *)g_hash_table_lookup(session->assertions,
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remote_providerID);
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if (assertion == NULL) {
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return NULL;
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}
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return(lasso_node_copy(assertion));
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}
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gchar*
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lasso_session_get_authentication_method(LassoSession *session,
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gchar *remote_providerID)
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{
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LassoNode *assertion, *as;
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gchar *providerID = remote_providerID;
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gchar *authentication_method;
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GError *err = NULL;
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if (remote_providerID == NULL) {
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providerID = lasso_session_get_next_assertion_remote_providerID(session);
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}
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assertion = lasso_session_get_assertion(session, providerID);
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if (remote_providerID == NULL) {
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g_free(providerID);
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}
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as = lasso_node_get_child(assertion, "AuthenticationStatement", NULL, NULL);
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authentication_method = lasso_node_get_attr_value(as, "AuthenticationMethod", &err);
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if (authentication_method == NULL) {
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message(G_LOG_LEVEL_CRITICAL, err->message);
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g_error_free(err);
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goto done;
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}
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done:
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lasso_node_destroy(as);
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lasso_node_destroy(assertion);
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return (authentication_method);
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}
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gchar*
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lasso_session_get_next_assertion_remote_providerID(LassoSession *session)
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{
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gchar *remote_providerID;
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g_return_val_if_fail(session!=NULL, NULL);
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if(session->providerIDs->len == 0) {
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return(NULL);
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}
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remote_providerID = g_strdup(g_ptr_array_index(session->providerIDs, 0));
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return(remote_providerID);
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}
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gint
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lasso_session_remove_assertion(LassoSession *session,
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gchar *remote_providerID)
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{
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LassoNode *assertion;
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int i;
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g_return_val_if_fail(session != NULL, -1);
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g_return_val_if_fail(remote_providerID != NULL, -2);
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/* remove the assertion */
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assertion = lasso_session_get_assertion(session, remote_providerID);
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if (assertion != NULL) {
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g_hash_table_remove(session->assertions, remote_providerID);
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lasso_node_destroy(assertion);
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}
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/* remove the remote provider id */
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for(i = 0; i<session->providerIDs->len; i++) {
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if(xmlStrEqual(remote_providerID, g_ptr_array_index(session->providerIDs, i))) {
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g_ptr_array_remove_index(session->providerIDs, i);
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break;
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}
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}
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session->is_dirty = TRUE;
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return(0);
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}
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/*****************************************************************************/
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/* overrided parent class methods */
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/*****************************************************************************/
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static void
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lasso_session_dispose(LassoSession *session)
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{
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if (session->private->dispose_has_run == TRUE) {
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return;
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}
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session->private->dispose_has_run = TRUE;
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debug("Session object 0x%x disposed ...\n", session);
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g_hash_table_destroy(session->assertions);
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session->assertions = NULL;
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parent_class->dispose(G_OBJECT(session));
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}
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static void
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lasso_session_finalize(LassoSession *session)
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{
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gint i;
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debug("Session object 0x%x finalized ...\n", session);
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/* free allocated memory for providerIDs array */
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for (i=0; i<session->providerIDs->len; i++) {
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g_free(session->providerIDs->pdata[i]);
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session->providerIDs->pdata[i] = NULL;
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}
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g_ptr_array_free(session->providerIDs, TRUE);
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session->providerIDs = NULL;
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g_free(session->private);
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session->private = NULL;
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parent_class->finalize(G_OBJECT(session));
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}
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/*****************************************************************************/
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/* instance and class init functions */
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/*****************************************************************************/
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static void
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lasso_session_instance_init(LassoSession *session)
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{
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session->private = g_new (LassoSessionPrivate, 1);
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session->private->dispose_has_run = FALSE;
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session->providerIDs = g_ptr_array_new();
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session->assertions = g_hash_table_new_full(g_str_hash, g_str_equal,
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(GDestroyNotify)g_free,
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(GDestroyNotify)lasso_node_destroy);
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session->is_dirty = TRUE;
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}
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static void
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lasso_session_class_init(LassoSessionClass *class)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS(class);
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parent_class = g_type_class_peek_parent(class);
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/* override parent class methods */
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gobject_class->dispose = (void *)lasso_session_dispose;
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gobject_class->finalize = (void *)lasso_session_finalize;
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}
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GType lasso_session_get_type() {
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static GType this_type = 0;
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if (!this_type) {
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static const GTypeInfo this_info = {
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sizeof (LassoSessionClass),
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NULL,
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NULL,
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(GClassInitFunc) lasso_session_class_init,
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NULL,
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NULL,
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sizeof(LassoSession),
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0,
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(GInstanceInitFunc) lasso_session_instance_init,
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};
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this_type = g_type_register_static(G_TYPE_OBJECT,
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"LassoSession",
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&this_info, 0);
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}
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return this_type;
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}
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LassoSession*
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lasso_session_new()
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{
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LassoSession *session;
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session = LASSO_SESSION(g_object_new(LASSO_TYPE_SESSION, NULL));
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return(session);
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}
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LassoSession*
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lasso_session_new_from_dump(gchar *dump)
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{
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LassoSession *session;
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LassoNode *session_node;
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LassoNode *assertions_node, *assertion_node, *assertion;
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xmlNodePtr assertions_xmlNode, assertion_xmlNode;
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xmlChar *remote_providerID;
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GError *err = NULL;
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g_return_val_if_fail(dump != NULL, NULL);
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session = LASSO_SESSION(g_object_new(LASSO_TYPE_SESSION, NULL));
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/* get session */
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session_node = lasso_node_new_from_dump(dump);
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if (session_node == NULL) {
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message(G_LOG_LEVEL_WARNING, "Can't create a session from dump\n");
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return (NULL);
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}
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/* get assertions */
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assertions_node = lasso_node_get_child(session_node,
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LASSO_SESSION_ASSERTIONS_NODE,
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NULL, NULL);
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if (assertions_node != NULL) {
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assertions_xmlNode = LASSO_NODE_GET_CLASS(assertions_node)->get_xmlNode(assertions_node);
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assertion_xmlNode = assertions_xmlNode->children;
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while (assertion_xmlNode != NULL) {
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/* assertion xmlNode */
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if (assertion_xmlNode->type == XML_ELEMENT_NODE && \
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xmlStrEqual(assertion_xmlNode->name, LASSO_SESSION_ASSERTION_NODE)) {
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/* assertion node */
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assertion_node = lasso_node_new_from_xmlNode(assertion_xmlNode);
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remote_providerID = lasso_node_get_attr_value(assertion_node,
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LASSO_SESSION_REMOTE_PROVIDERID_ATTR,
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&err);
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if (remote_providerID != NULL) {
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assertion = lasso_node_get_child(assertion_node,
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"Assertion", lassoLibHRef,
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&err);
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if (assertion != NULL) {
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lasso_session_add_assertion(session, remote_providerID, assertion);
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lasso_node_destroy(assertion);
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}
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else {
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message(G_LOG_LEVEL_CRITICAL, err->message);
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g_clear_error(&err);
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}
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}
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else {
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message(G_LOG_LEVEL_CRITICAL, err->message);
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g_clear_error(&err);
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}
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g_free(remote_providerID);
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lasso_node_destroy(assertion_node);
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}
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assertion_xmlNode = assertion_xmlNode->next;
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}
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}
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lasso_node_destroy(assertions_node);
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lasso_node_destroy(session_node);
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return (session);
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}
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