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/* $Id$
*
* 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, see <http://www.gnu.org/licenses/>.
*/
/**
* SECTION:ecp
* @short_description: Enhanced Client or Proxy Profile (SAMLv2)
*
**/
#include "../xml/private.h"
#include <libxml/xpath.h>
#include <libxml/xpathInternals.h>
#include "providerprivate.h"
#include "profileprivate.h"
#include "../id-ff/providerprivate.h"
#include "../id-ff/identityprivate.h"
#include "../id-ff/serverprivate.h"
#include "ecpprivate.h"
#include "ecp.h"
#include "../utils.h"
/*****************************************************************************/
/* public methods */
/*****************************************************************************/
/**
* lasso_ecp_destroy:
* @ecp: a #LassoEcp
*
* Destroys a #LassoEcp object
*
**/
void
lasso_ecp_destroy(LassoEcp *ecp)
{
lasso_node_destroy(LASSO_NODE(ecp));
}
/*****************************************************************************/
/* private methods */
/*****************************************************************************/
static LassoNodeClass *parent_class = NULL;
/*****************************************************************************/
/* overridden parent class methods */
/*****************************************************************************/
static void
dispose(GObject *object)
{
LassoEcp *ecp = LASSO_ECP(object);
if (ecp->private_data->messageID) {
xmlFree(ecp->private_data->messageID);
ecp->private_data->messageID = NULL;
}
if (ecp->private_data->relay_state) {
xmlFree(ecp->private_data->relay_state);
ecp->private_data->relay_state = NULL;
}
G_OBJECT_CLASS(parent_class)->dispose(G_OBJECT(ecp));
}
static void
finalize(GObject *object)
{
LassoEcp *ecp = LASSO_ECP(object);
lasso_release(ecp->private_data);
ecp->private_data = NULL;
G_OBJECT_CLASS(parent_class)->finalize(object);
}
/*****************************************************************************/
/* instance and class init functions */
/*****************************************************************************/
static void
instance_init(LassoEcp *ecp)
{
ecp->private_data = g_new0(LassoEcpPrivate, 1);
ecp->private_data->messageID = NULL;
ecp->private_data->relay_state = NULL;
ecp->assertionConsumerURL = NULL;
}
static void
class_init(LassoEcpClass *klass)
{
LassoNodeClass *nclass = LASSO_NODE_CLASS(klass);
parent_class = g_type_class_peek_parent(klass);
nclass->node_data = g_new0(LassoNodeClassData, 1);
lasso_node_class_set_nodename(nclass, "Ecp");
lasso_node_class_set_ns(nclass, LASSO_LASSO_HREF, LASSO_LASSO_PREFIX);
G_OBJECT_CLASS(klass)->dispose = dispose;
G_OBJECT_CLASS(klass)->finalize = finalize;
}
int
lasso_ecp_process_authn_request_msg(LassoEcp *ecp, const char *authn_request_msg)
{
xmlDoc *doc;
xmlXPathContext *xpathCtx;
xmlXPathObject *xpathObj;
xmlNode *xmlnode;
LassoProfile *profile;
LassoProvider *remote_provider;
g_return_val_if_fail(LASSO_IS_ECP(ecp), LASSO_PARAM_ERROR_BAD_TYPE_OR_NULL_OBJ);
g_return_val_if_fail(authn_request_msg != NULL, LASSO_PARAM_ERROR_INVALID_VALUE);
profile = LASSO_PROFILE(ecp);
doc = lasso_xml_parse_memory(authn_request_msg, strlen(authn_request_msg));
xpathCtx = xmlXPathNewContext(doc);
xmlXPathRegisterNs(xpathCtx, (xmlChar*)"ecp", (xmlChar*)LASSO_ECP_HREF);
xpathObj = xmlXPathEvalExpression((xmlChar*)"//ecp:RelayState", xpathCtx);
if (xpathObj && xpathObj->nodesetval && xpathObj->nodesetval->nodeNr) {
xmlnode = xpathObj->nodesetval->nodeTab[0];
ecp->private_data->relay_state = xmlNodeGetContent(xmlnode);
}
xmlXPathFreeObject(xpathObj);
xmlXPathRegisterNs(xpathCtx, (xmlChar*)"paos", (xmlChar*)LASSO_PAOS_HREF);
xpathObj = xmlXPathEvalExpression((xmlChar*)"//paos:Request", xpathCtx);
if (xpathObj && xpathObj->nodesetval && xpathObj->nodesetval->nodeNr) {
ecp->private_data->messageID = xmlGetProp(
xpathObj->nodesetval->nodeTab[0], (xmlChar*)"messageID");
}
xmlXPathFreeObject(xpathObj);
xmlXPathRegisterNs(xpathCtx, (xmlChar*)"s", (xmlChar*)LASSO_SOAP_ENV_HREF);
xpathObj = xmlXPathEvalExpression((xmlChar*)"//s:Header", xpathCtx);
if (xpathObj && xpathObj->nodesetval && xpathObj->nodesetval->nodeNr) {
xmlnode = xpathObj->nodesetval->nodeTab[0];
xmlUnlinkNode(xmlnode);
xmlFreeNode(xmlnode);
}
xmlXPathFreeObject(xpathObj);
xmlXPathFreeContext(xpathCtx);
xpathCtx = NULL;
xpathObj = NULL;
xmlnode = xmlDocGetRootElement(doc);
lasso_assign_new_string(LASSO_PROFILE(ecp)->msg_body,
lasso_xmlnode_to_string(xmlnode, 0, 0))
lasso_release_doc(doc);
profile->remote_providerID = lasso_server_get_first_providerID_by_role(profile->server, LASSO_PROVIDER_ROLE_IDP);
if (profile->remote_providerID == NULL) {
return critical_error(LASSO_SERVER_ERROR_PROVIDER_NOT_FOUND);
}
remote_provider = lasso_server_get_provider(profile->server, profile->remote_providerID);
if (LASSO_IS_PROVIDER(remote_provider) == FALSE) {
return critical_error(LASSO_SERVER_ERROR_PROVIDER_NOT_FOUND);
}
profile->msg_url = lasso_provider_get_metadata_one(remote_provider,
"SingleSignOnService SOAP");
if (profile->msg_url == NULL) {
return critical_error(LASSO_PROFILE_ERROR_UNKNOWN_PROFILE_URL);
}
return 0;
}
int
lasso_ecp_process_response_msg(LassoEcp *ecp, const char *response_msg)
{
xmlDoc *doc;
xmlXPathContext *xpathCtx;
xmlXPathObject *xpathObj;
xmlNode *new_envelope, *header, *paos_response, *ecp_relay_state;
xmlNode *body = NULL;
xmlNs *soap_env_ns, *ecp_ns;
g_return_val_if_fail(LASSO_IS_ECP(ecp), LASSO_PARAM_ERROR_BAD_TYPE_OR_NULL_OBJ);
g_return_val_if_fail(response_msg != NULL, LASSO_PARAM_ERROR_INVALID_VALUE);
doc = lasso_xml_parse_memory(response_msg, strlen(response_msg));
xpathCtx = xmlXPathNewContext(doc);
xmlXPathRegisterNs(xpathCtx, (xmlChar*)"s", (xmlChar*)LASSO_SOAP_ENV_HREF);
xpathObj = xmlXPathEvalExpression((xmlChar*)"//s:Body", xpathCtx);
if (xpathObj && xpathObj->nodesetval && xpathObj->nodesetval->nodeNr) {
body = xmlCopyNode(xpathObj->nodesetval->nodeTab[0], 1);
}
xmlXPathFreeObject(xpathObj);
xmlXPathRegisterNs(xpathCtx, (xmlChar*)"ecp", (xmlChar*)LASSO_ECP_HREF);
xpathObj = xmlXPathEvalExpression((xmlChar*)"//ecp:Response", xpathCtx);
if (xpathObj && xpathObj->nodesetval && xpathObj->nodesetval->nodeNr) {
ecp->assertionConsumerURL = (char*)xmlGetProp(
xpathObj->nodesetval->nodeTab[0], (xmlChar*)"AssertionConsumerURL");
}
xmlXPathFreeObject(xpathObj);
xmlXPathFreeContext(xpathCtx);
xpathCtx = NULL;
xpathObj = NULL;
new_envelope = xmlNewNode(NULL, (xmlChar*)"Envelope");
xmlSetNs(new_envelope, xmlNewNs(new_envelope,
(xmlChar*)LASSO_SOAP_ENV_HREF, (xmlChar*)LASSO_SOAP_ENV_PREFIX));
xmlNewNs(new_envelope,
(xmlChar*)LASSO_SAML_ASSERTION_HREF, (xmlChar*)LASSO_SAML_ASSERTION_PREFIX);
header = xmlNewTextChild(new_envelope, NULL, (xmlChar*)"Header", NULL);
/* PAOS request header block */
soap_env_ns = xmlNewNs(new_envelope,
(xmlChar*)LASSO_SOAP_ENV_HREF, (xmlChar*)LASSO_SOAP_ENV_PREFIX);
paos_response = xmlNewNode(NULL, (xmlChar*)"Response");
xmlSetNs(paos_response, xmlNewNs(paos_response,
(xmlChar*)LASSO_PAOS_HREF, (xmlChar*)LASSO_PAOS_PREFIX));
xmlSetNsProp(paos_response, soap_env_ns, (xmlChar*)"mustUnderstand", (xmlChar*)"1");
xmlSetNsProp(paos_response, soap_env_ns, (xmlChar*)"actor",
(xmlChar*)LASSO_SOAP_ENV_ACTOR);
if (ecp->private_data->messageID) {
xmlSetNsProp(paos_response, soap_env_ns, (xmlChar*)"refToMessageID",
(xmlChar*)ecp->private_data->messageID);
}
xmlAddChild(header, paos_response);
/* ECP relay state block */
if (ecp->private_data->relay_state) {
ecp_relay_state = xmlNewNode(NULL, (xmlChar*)"RelayState");
xmlNodeSetContent(ecp_relay_state, (xmlChar*)ecp->private_data->relay_state);
ecp_ns = xmlNewNs(ecp_relay_state, (xmlChar*)LASSO_ECP_HREF,
(xmlChar*)LASSO_ECP_PREFIX);
xmlSetNs(ecp_relay_state, ecp_ns);
xmlSetNsProp(ecp_relay_state, soap_env_ns, (xmlChar*)"mustUnderstand",
(xmlChar*)"1");
xmlSetNsProp(ecp_relay_state, soap_env_ns, (xmlChar*)"actor",
(xmlChar*)LASSO_SOAP_ENV_ACTOR);
xmlAddChild(header, ecp_relay_state);
}
xmlAddChild(new_envelope, body);
lasso_assign_new_string(LASSO_PROFILE(ecp)->msg_body,
lasso_xmlnode_to_string(new_envelope, 0, 0))
lasso_release_doc(doc);
return 0;
}
GType
lasso_ecp_get_type()
{
static GType this_type = 0;
if (!this_type) {
static const GTypeInfo this_info = {
sizeof (LassoEcpClass),
NULL,
NULL,
(GClassInitFunc) class_init,
NULL,
NULL,
sizeof(LassoEcp),
0,
(GInstanceInitFunc) instance_init,
NULL
};
this_type = g_type_register_static(LASSO_TYPE_PROFILE,
"LassoEcp", &this_info, 0);
}
return this_type;
}
/**
* lasso_ecp_new
*
* Creates a new #LassoEcp.
*
* Return value: a newly created #LassoEcp object; or NULL if an error
* occured
**/
LassoEcp*
lasso_ecp_new(LassoServer *server)
{
LassoEcp *ecp;
ecp = g_object_new(LASSO_TYPE_ECP, NULL);
LASSO_PROFILE(ecp)->server = g_object_ref(server);
return ecp;
}
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