330 lines
10 KiB
C
330 lines
10 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) 2004-2007 Entr'ouvert
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* http://lasso.entrouvert.org
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*
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* Authors: See AUTHORS file in top-level directory.
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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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/**
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* SECTION:ecp
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* @short_description: Enhanced Client or Proxy Profile (SAMLv2)
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*
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**/
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#include "../xml/private.h"
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#include <libxml/xpath.h>
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#include <libxml/xpathInternals.h>
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#include "providerprivate.h"
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#include "profileprivate.h"
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#include "../id-ff/providerprivate.h"
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#include "../id-ff/identityprivate.h"
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#include "../id-ff/serverprivate.h"
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#include "ecpprivate.h"
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#include "ecp.h"
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#include "../utils.h"
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/*****************************************************************************/
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/* public methods */
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/*****************************************************************************/
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/**
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* lasso_ecp_destroy:
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* @ecp: a #LassoEcp
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*
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* Destroys a #LassoEcp object
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*
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**/
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void
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lasso_ecp_destroy(LassoEcp *ecp)
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{
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lasso_node_destroy(LASSO_NODE(ecp));
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}
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/*****************************************************************************/
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/* private methods */
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/*****************************************************************************/
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static LassoNodeClass *parent_class = NULL;
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/*****************************************************************************/
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/* overridden parent class methods */
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/*****************************************************************************/
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static void
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dispose(GObject *object)
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{
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LassoEcp *ecp = LASSO_ECP(object);
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if (ecp->private_data->messageID) {
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xmlFree(ecp->private_data->messageID);
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ecp->private_data->messageID = NULL;
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}
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if (ecp->private_data->relay_state) {
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xmlFree(ecp->private_data->relay_state);
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ecp->private_data->relay_state = NULL;
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}
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G_OBJECT_CLASS(parent_class)->dispose(G_OBJECT(ecp));
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}
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static void
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finalize(GObject *object)
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{
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LassoEcp *ecp = LASSO_ECP(object);
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g_free(ecp->private_data);
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ecp->private_data = NULL;
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G_OBJECT_CLASS(parent_class)->finalize(object);
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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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instance_init(LassoEcp *ecp)
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{
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ecp->private_data = g_new(LassoEcpPrivate, 1);
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ecp->private_data->messageID = NULL;
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ecp->private_data->relay_state = NULL;
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ecp->assertionConsumerURL = NULL;
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}
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static void
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class_init(LassoEcpClass *klass)
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{
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parent_class = g_type_class_peek_parent(klass);
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G_OBJECT_CLASS(klass)->dispose = dispose;
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G_OBJECT_CLASS(klass)->finalize = finalize;
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}
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int
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lasso_ecp_process_authn_request_msg(LassoEcp *ecp, const char *authn_request_msg)
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{
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xmlDoc *doc;
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xmlXPathContext *xpathCtx;
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xmlXPathObject *xpathObj;
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xmlNode *xmlnode;
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xmlOutputBuffer *buf;
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xmlCharEncodingHandler *handler;
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LassoProfile *profile;
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LassoProvider *remote_provider;
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g_return_val_if_fail(LASSO_IS_ECP(ecp), LASSO_PARAM_ERROR_BAD_TYPE_OR_NULL_OBJ);
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g_return_val_if_fail(authn_request_msg != NULL, LASSO_PARAM_ERROR_INVALID_VALUE);
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profile = LASSO_PROFILE(ecp);
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doc = lasso_xml_parse_memory(authn_request_msg, strlen(authn_request_msg));
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xpathCtx = xmlXPathNewContext(doc);
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xmlXPathRegisterNs(xpathCtx, (xmlChar*)"ecp", (xmlChar*)LASSO_ECP_HREF);
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xpathObj = xmlXPathEvalExpression((xmlChar*)"//ecp:RelayState", xpathCtx);
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if (xpathObj && xpathObj->nodesetval && xpathObj->nodesetval->nodeNr) {
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xmlnode = xpathObj->nodesetval->nodeTab[0];
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ecp->private_data->relay_state = xmlNodeGetContent(xmlnode);
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}
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xmlXPathFreeObject(xpathObj);
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xmlXPathRegisterNs(xpathCtx, (xmlChar*)"paos", (xmlChar*)LASSO_PAOS_HREF);
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xpathObj = xmlXPathEvalExpression((xmlChar*)"//paos:Request", xpathCtx);
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if (xpathObj && xpathObj->nodesetval && xpathObj->nodesetval->nodeNr) {
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ecp->private_data->messageID = xmlGetProp(
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xpathObj->nodesetval->nodeTab[0], (xmlChar*)"messageID");
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}
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xmlXPathFreeObject(xpathObj);
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xmlXPathRegisterNs(xpathCtx, (xmlChar*)"s", (xmlChar*)LASSO_SOAP_ENV_HREF);
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xpathObj = xmlXPathEvalExpression((xmlChar*)"//s:Header", xpathCtx);
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if (xpathObj && xpathObj->nodesetval && xpathObj->nodesetval->nodeNr) {
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xmlnode = xpathObj->nodesetval->nodeTab[0];
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xmlUnlinkNode(xmlnode);
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}
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xmlXPathFreeObject(xpathObj);
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xmlXPathFreeContext(xpathCtx);
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xpathCtx = NULL;
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xpathObj = NULL;
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xmlnode = xmlDocGetRootElement(doc);
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handler = xmlFindCharEncodingHandler("utf-8");
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buf = xmlAllocOutputBuffer(handler);
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xmlNodeDumpOutput(buf, NULL, xmlnode, 0, 0, "utf-8");
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xmlOutputBufferFlush(buf);
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LASSO_PROFILE(ecp)->msg_body = g_strdup(
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(char*)(buf->conv ? buf->conv->content : buf->buffer->content));
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xmlOutputBufferClose(buf);
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lasso_release_doc(doc);
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profile->remote_providerID = lasso_server_get_first_providerID(profile->server);
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if (profile->remote_providerID == NULL) {
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return critical_error(LASSO_SERVER_ERROR_PROVIDER_NOT_FOUND);
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}
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remote_provider = g_hash_table_lookup(profile->server->providers,
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profile->remote_providerID);
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if (LASSO_IS_PROVIDER(remote_provider) == FALSE) {
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return critical_error(LASSO_SERVER_ERROR_PROVIDER_NOT_FOUND);
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}
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profile->msg_url = lasso_provider_get_metadata_one(remote_provider,
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"SingleSignOnService SOAP");
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if (profile->msg_url == NULL) {
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return critical_error(LASSO_PROFILE_ERROR_UNKNOWN_PROFILE_URL);
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}
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return 0;
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}
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int
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lasso_ecp_process_response_msg(LassoEcp *ecp, const char *response_msg)
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{
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xmlDoc *doc;
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xmlXPathContext *xpathCtx;
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xmlXPathObject *xpathObj;
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xmlNode *new_envelope, *header, *paos_response, *ecp_relay_state;
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xmlNode *body = NULL;
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xmlOutputBuffer *buf;
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xmlCharEncodingHandler *handler;
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xmlNs *soap_env_ns, *ecp_ns;
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g_return_val_if_fail(LASSO_IS_ECP(ecp), LASSO_PARAM_ERROR_BAD_TYPE_OR_NULL_OBJ);
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g_return_val_if_fail(response_msg != NULL, LASSO_PARAM_ERROR_INVALID_VALUE);
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doc = lasso_xml_parse_memory(response_msg, strlen(response_msg));
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xpathCtx = xmlXPathNewContext(doc);
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xmlXPathRegisterNs(xpathCtx, (xmlChar*)"s", (xmlChar*)LASSO_SOAP_ENV_HREF);
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xpathObj = xmlXPathEvalExpression((xmlChar*)"//s:Body", xpathCtx);
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if (xpathObj && xpathObj->nodesetval && xpathObj->nodesetval->nodeNr) {
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body = xmlCopyNode(xpathObj->nodesetval->nodeTab[0], 1);
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}
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xmlXPathFreeObject(xpathObj);
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xmlXPathRegisterNs(xpathCtx, (xmlChar*)"ecp", (xmlChar*)LASSO_ECP_HREF);
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xpathObj = xmlXPathEvalExpression((xmlChar*)"//ecp:Response", xpathCtx);
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if (xpathObj && xpathObj->nodesetval && xpathObj->nodesetval->nodeNr) {
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ecp->assertionConsumerURL = (char*)xmlGetProp(
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xpathObj->nodesetval->nodeTab[0], (xmlChar*)"AssertionConsumerURL");
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}
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xmlXPathFreeObject(xpathObj);
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xmlXPathFreeContext(xpathCtx);
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xpathCtx = NULL;
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xpathObj = NULL;
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new_envelope = xmlNewNode(NULL, (xmlChar*)"Envelope");
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xmlSetNs(new_envelope, xmlNewNs(new_envelope,
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(xmlChar*)LASSO_SOAP_ENV_HREF, (xmlChar*)LASSO_SOAP_ENV_PREFIX));
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xmlNewNs(new_envelope,
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(xmlChar*)LASSO_SAML_ASSERTION_HREF, (xmlChar*)LASSO_SAML_ASSERTION_PREFIX);
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header = xmlNewTextChild(new_envelope, NULL, (xmlChar*)"Header", NULL);
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/* PAOS request header block */
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soap_env_ns = xmlNewNs(new_envelope,
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(xmlChar*)LASSO_SOAP_ENV_HREF, (xmlChar*)LASSO_SOAP_ENV_PREFIX);
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paos_response = xmlNewNode(NULL, (xmlChar*)"Response");
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xmlSetNs(paos_response, xmlNewNs(paos_response,
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(xmlChar*)LASSO_PAOS_HREF, (xmlChar*)LASSO_PAOS_PREFIX));
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xmlSetNsProp(paos_response, soap_env_ns, (xmlChar*)"mustUnderstand", (xmlChar*)"1");
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xmlSetNsProp(paos_response, soap_env_ns, (xmlChar*)"actor",
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(xmlChar*)LASSO_SOAP_ENV_ACTOR);
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if (ecp->private_data->messageID) {
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xmlSetNsProp(paos_response, soap_env_ns, (xmlChar*)"refToMessageID",
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(xmlChar*)ecp->private_data->messageID);
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}
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xmlAddChild(header, paos_response);
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/* ECP relay state block */
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if (ecp->private_data->relay_state) {
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ecp_relay_state = xmlNewNode(NULL, (xmlChar*)"RelayState");
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xmlNodeSetContent(ecp_relay_state, (xmlChar*)ecp->private_data->relay_state);
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ecp_ns = xmlNewNs(ecp_relay_state, (xmlChar*)LASSO_ECP_HREF,
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(xmlChar*)LASSO_ECP_PREFIX);
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xmlSetNs(ecp_relay_state, ecp_ns);
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xmlSetNsProp(ecp_relay_state, soap_env_ns, (xmlChar*)"mustUnderstand",
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(xmlChar*)"1");
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xmlSetNsProp(ecp_relay_state, soap_env_ns, (xmlChar*)"actor",
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(xmlChar*)LASSO_SOAP_ENV_ACTOR);
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xmlAddChild(header, ecp_relay_state);
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}
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xmlAddChild(new_envelope, body);
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handler = xmlFindCharEncodingHandler("utf-8");
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buf = xmlAllocOutputBuffer(handler);
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xmlNodeDumpOutput(buf, NULL, new_envelope, 0, 0, "utf-8");
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xmlOutputBufferFlush(buf);
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LASSO_PROFILE(ecp)->msg_body = g_strdup(
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(char*)(buf->conv ? buf->conv->content : buf->buffer->content));
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xmlOutputBufferClose(buf);
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lasso_release_doc(doc);
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return 0;
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}
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GType
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lasso_ecp_get_type()
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{
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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 (LassoEcpClass),
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NULL,
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NULL,
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(GClassInitFunc) class_init,
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NULL,
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NULL,
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sizeof(LassoEcp),
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0,
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(GInstanceInitFunc) instance_init,
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NULL
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};
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this_type = g_type_register_static(LASSO_TYPE_PROFILE,
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"LassoEcp", &this_info, 0);
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}
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return this_type;
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}
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/**
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* lasso_ecp_new
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*
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* Creates a new #LassoEcp.
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*
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* Return value: a newly created #LassoEcp object; or NULL if an error
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* occured
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**/
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LassoEcp*
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lasso_ecp_new(LassoServer *server)
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{
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LassoEcp *ecp;
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ecp = g_object_new(LASSO_TYPE_ECP, NULL);
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LASSO_PROFILE(ecp)->server = g_object_ref(server);
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return ecp;
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}
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