637 lines
18 KiB
C
637 lines
18 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:server
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* @short_description: Representation of the current server
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*
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* It holds the data about a provider, other providers it knows, which
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* certificates to use, etc.
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**/
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#include "../xml/private.h"
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#include <xmlsec/base64.h>
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#include <config.h>
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#include "server.h"
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#include "providerprivate.h"
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#include "serverprivate.h"
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#include "../saml-2.0/serverprivate.h"
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#include "../utils.h"
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#include "../debug.h"
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#ifdef LASSO_WSF_ENABLED
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#include "../id-wsf/id_ff_extensions_private.h"
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#include "../id-wsf-2.0/serverprivate.h"
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#endif
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/*****************************************************************************/
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/* public methods */
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/*****************************************************************************/
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static gint
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lasso_server_add_provider_helper(LassoServer *server, LassoProviderRole role,
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const gchar *metadata, const gchar *public_key, const gchar *ca_cert_chain,
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LassoProvider *(*provider_constructor)(LassoProviderRole role,
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const char *metadata, const char *public_key, const char *ca_cert_chain))
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{
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LassoProvider *provider;
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g_return_val_if_fail(LASSO_IS_SERVER(server), LASSO_PARAM_ERROR_BAD_TYPE_OR_NULL_OBJ);
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g_return_val_if_fail(metadata != NULL, LASSO_PARAM_ERROR_INVALID_VALUE);
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provider = provider_constructor(role, metadata, public_key, ca_cert_chain);
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if (provider == NULL) {
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return critical_error(LASSO_SERVER_ERROR_ADD_PROVIDER_FAILED);
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}
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provider->role = role;
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if (LASSO_PROVIDER(server)->private_data->conformance == LASSO_PROTOCOL_SAML_2_0 &&
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provider->private_data->conformance != LASSO_PROTOCOL_SAML_2_0) {
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lasso_node_destroy(LASSO_NODE(provider));
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return LASSO_SERVER_ERROR_ADD_PROVIDER_PROTOCOL_MISMATCH;
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}
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if (LASSO_PROVIDER(server)->private_data->conformance == LASSO_PROTOCOL_LIBERTY_1_2 &&
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provider->private_data->conformance > LASSO_PROTOCOL_LIBERTY_1_2) {
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lasso_node_destroy(LASSO_NODE(provider));
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return LASSO_SERVER_ERROR_ADD_PROVIDER_PROTOCOL_MISMATCH;
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}
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g_hash_table_insert(server->providers, g_strdup(provider->ProviderID), provider);
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return 0;
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}
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/**
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* lasso_server_add_provider:
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* @server: a #LassoServer
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* @role: provider role, identity provider or service provider
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* @metadata: path to the provider metadata file
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* @public_key: provider public key file (may be a certificate) or NULL
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* @ca_cert_chain: provider CA certificate chain file or NULL
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*
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* Creates a new #LassoProvider and makes it known to the @server
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*
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* Return value: 0 on success; a negative value if an error occured.
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**/
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gint
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lasso_server_add_provider(LassoServer *server, LassoProviderRole role,
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const gchar *metadata, const gchar *public_key, const gchar *ca_cert_chain)
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{
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return lasso_server_add_provider_helper(server, role, metadata,
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public_key, ca_cert_chain, lasso_provider_new);
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}
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/**
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* lasso_server_add_provider_from_buffer:
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* @server: a #LassoServer
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* @role: provider role, identity provider or service provider
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* @metadata: a string buffer containg the metadata file for a new provider
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* @public_key: provider public key file (may be a certificate) or NULL
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* @ca_cert_chain: provider CA certificate chain file or NULL
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*
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* Creates a new #LassoProvider and makes it known to the @server
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*
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* Return value: 0 on success; a negative value if an error occured.
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**/
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gint
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lasso_server_add_provider_from_buffer(LassoServer *server, LassoProviderRole role,
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const gchar *metadata, const gchar *public_key, const gchar *ca_cert_chain)
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{
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return lasso_server_add_provider_helper(server, role, metadata,
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public_key, ca_cert_chain, lasso_provider_new_from_buffer);
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}
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/**
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* lasso_server_destroy:
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* @server: a #LassoServer
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*
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* Destroys a server.
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**/
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void
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lasso_server_destroy(LassoServer *server)
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{
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lasso_node_destroy(LASSO_NODE(server));
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}
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/**
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* lasso_server_set_encryption_private_key:
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* @server: a #LassoServer
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* @filename: file name of the encryption key to load
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*
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* Load an encryption private key from a file and set it in the server object
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*
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* Return value: 0 on success; another value if an error occured.
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**/
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int
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lasso_server_set_encryption_private_key(LassoServer *server, const gchar *filename)
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{
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LassoPemFileType file_type;
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lasso_release_sec_key(server->private_data->encryption_private_key);
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file_type = lasso_get_pem_file_type(filename);
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if (file_type == LASSO_PEM_FILE_TYPE_PRIVATE_KEY) {
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server->private_data->encryption_private_key = xmlSecCryptoAppKeyLoad(filename,
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xmlSecKeyDataFormatPem, NULL, NULL, NULL);
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}
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if (server->private_data->encryption_private_key == NULL)
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return LASSO_SERVER_ERROR_SET_ENCRYPTION_PRIVATE_KEY_FAILED;
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return 0;
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}
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/**
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* lasso_server_load_affiliation:
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* @server: a #LassoServer
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* @filename: file name of the affiliation metadata to load
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*
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* Load an affiliation metadata file into @server; this must be called after
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* providers have been added to @server.
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*
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* Return value: 0 on success; another value if an error occured.
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**/
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int
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lasso_server_load_affiliation(LassoServer *server, const gchar *filename)
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{
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LassoProvider *provider = LASSO_PROVIDER(server);
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xmlDoc *doc;
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xmlNode *node;
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int rc = 0;
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doc = xmlParseFile(filename);
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goto_cleanup_if_fail_with_rc (doc != NULL, LASSO_XML_ERROR_INVALID_FILE);
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node = xmlDocGetRootElement(doc);
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goto_cleanup_if_fail_with_rc (node != NULL && node->ns != NULL, LASSO_XML_ERROR_NODE_NOT_FOUND);
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if (provider->private_data->conformance == LASSO_PROTOCOL_SAML_2_0) {
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rc = lasso_saml20_server_load_affiliation(server, node);
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} else {
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/* affiliations are not supported in ID-FF 1.2 mode */
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rc = LASSO_ERROR_UNIMPLEMENTED;
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}
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cleanup:
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lasso_release_doc(doc);
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return rc;
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}
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/*****************************************************************************/
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/* private methods */
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/*****************************************************************************/
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static struct XmlSnippet schema_snippets[] = {
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{ "PrivateKeyFilePath", SNIPPET_CONTENT, G_STRUCT_OFFSET(LassoServer, private_key), NULL, NULL, NULL},
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{ "PrivateKeyPassword", SNIPPET_CONTENT,
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G_STRUCT_OFFSET(LassoServer, private_key_password), NULL, NULL, NULL},
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{ "CertificateFilePath", SNIPPET_CONTENT, G_STRUCT_OFFSET(LassoServer, certificate), NULL, NULL, NULL},
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{NULL, 0, 0, NULL, NULL, NULL}
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};
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static LassoNodeClass *parent_class = NULL;
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static void
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add_provider_childnode(G_GNUC_UNUSED gchar *key, LassoProvider *value, xmlNode *xmlnode)
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{
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xmlAddChild(xmlnode, lasso_node_get_xmlNode(LASSO_NODE(value), TRUE));
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}
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static xmlNode*
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get_xmlNode(LassoNode *node, gboolean lasso_dump)
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{
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LassoServer *server = LASSO_SERVER(node);
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char *signature_methods[] = { NULL, "RSA_SHA1", "DSA_SHA1"};
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xmlNode *xmlnode;
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xmlnode = parent_class->get_xmlNode(node, lasso_dump);
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xmlSetProp(xmlnode, (xmlChar*)"ServerDumpVersion", (xmlChar*)"2");
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xmlSetProp(xmlnode, (xmlChar*)"SignatureMethod",
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(xmlChar*)signature_methods[server->signature_method]);
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/* Providers */
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if (g_hash_table_size(server->providers)) {
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xmlNode *t;
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t = xmlNewTextChild(xmlnode, NULL, (xmlChar*)"Providers", NULL);
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g_hash_table_foreach(server->providers,
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(GHFunc)add_provider_childnode, t);
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}
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#ifdef LASSO_WSF_ENABLED
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lasso_server_dump_id_wsf_services(server, xmlnode);
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lasso_server_dump_id_wsf20_svcmds(server, xmlnode);
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#endif
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xmlCleanNs(xmlnode);
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return xmlnode;
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}
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static int
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init_from_xml(LassoNode *node, xmlNode *xmlnode)
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{
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LassoServer *server = LASSO_SERVER(node);
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xmlNode *t;
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xmlChar *s;
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int rc = 0;
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rc = parent_class->init_from_xml(node, xmlnode);
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if (rc)
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return rc;
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s = xmlGetProp(xmlnode, (xmlChar*)"SignatureMethod");
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if (s && strcmp((char*)s, "RSA_SHA1") == 0)
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server->signature_method = LASSO_SIGNATURE_METHOD_RSA_SHA1;
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if (s && strcmp((char*)s, "DSA_SHA1") == 0)
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server->signature_method = LASSO_SIGNATURE_METHOD_DSA_SHA1;
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if (s)
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xmlFree(s);
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t = xmlnode->children;
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while (t) {
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xmlNode *t2 = t->children;
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if (t->type != XML_ELEMENT_NODE) {
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t = t->next;
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continue;
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}
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/* Providers */
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if (strcmp((char*)t->name, "Providers") == 0) {
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while (t2) {
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LassoProvider *p;
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if (t2->type != XML_ELEMENT_NODE) {
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t2 = t2->next;
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continue;
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}
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p = g_object_new(LASSO_TYPE_PROVIDER, NULL);
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LASSO_NODE_GET_CLASS(p)->init_from_xml(LASSO_NODE(p), t2);
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if (lasso_provider_load_public_key(p, LASSO_PUBLIC_KEY_SIGNING)) {
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g_hash_table_insert(server->providers,
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g_strdup(p->ProviderID), p);
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} else {
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message(G_LOG_LEVEL_CRITICAL,
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"Failed to load signing public key for %s.",
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p->ProviderID);
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}
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t2 = t2->next;
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}
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}
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#ifdef LASSO_WSF_ENABLED
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lasso_server_init_id_wsf_services(server, t);
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lasso_server_init_id_wsf20_svcmds(server, t);
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#endif
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t = t->next;
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}
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return 0;
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}
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static gboolean
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get_first_providerID(gchar *key, G_GNUC_UNUSED gpointer value, char **providerID)
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{
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*providerID = key;
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return TRUE;
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}
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/**
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* lasso_server_get_first_providerID:
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* @server: a #LassoServer
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*
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* Looks up and returns the provider ID of a known provider
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*
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* Return value: the provider ID, NULL if there are no providers. This string
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* must be freed by the caller.
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**/
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gchar*
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lasso_server_get_first_providerID(LassoServer *server)
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{
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gchar *providerID = NULL;
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g_hash_table_find(server->providers, (GHRFunc)get_first_providerID, &providerID);
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return g_strdup(providerID);
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}
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/**
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* lasso_server_get_provider:
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* @server: a #LassoServer
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* @providerID: the provider ID
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*
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* Looks up for a #LassoProvider whose ID is @providerID and returns it.
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*
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* Return value: the #LassoProvider, NULL if it was not found. The
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* #LassoProvider is owned by Lasso and should not be freed.
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**/
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LassoProvider*
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lasso_server_get_provider(LassoServer *server, const gchar *providerID)
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{
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if (! LASSO_IS_SERVER(server) || providerID == NULL || strlen(providerID) == 0) {
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return NULL;
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}
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return g_hash_table_lookup(server->providers, providerID);
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}
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static gboolean
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get_providerID_with_hash(gchar *key, G_GNUC_UNUSED gpointer value, char **providerID)
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{
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char *hash = *providerID;
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xmlChar *hash_providerID;
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char *b64_hash_providerID;
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hash_providerID = (xmlChar*)lasso_sha1(key);
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b64_hash_providerID = (char*)xmlSecBase64Encode(hash_providerID, 20, 0);
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xmlFree(hash_providerID);
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if (strcmp(b64_hash_providerID, hash) == 0) {
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xmlFree(b64_hash_providerID);
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*providerID = key;
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return TRUE;
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}
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xmlFree(b64_hash_providerID);
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return FALSE;
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}
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/**
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* lasso_server_get_providerID_from_hash:
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* @server: a #LassoServer
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* @b64_hash: the base64-encoded provider ID hash
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*
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* Looks up a #LassoProvider whose ID hash is @b64_hash and returns its
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* provider ID.
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*
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* Return value: the provider ID, NULL if it was not found.
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**/
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gchar*
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lasso_server_get_providerID_from_hash(LassoServer *server, gchar *b64_hash)
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{
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gchar *providerID = b64_hash; /* kludge */
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if (g_hash_table_find(server->providers, (GHRFunc)get_providerID_with_hash, &providerID))
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return g_strdup(providerID);
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return NULL;
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}
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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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LassoServer *server = LASSO_SERVER(object);
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if (server->private_data->dispose_has_run == TRUE) {
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return;
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}
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server->private_data->dispose_has_run = TRUE;
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lasso_release_sec_key(server->private_data->encryption_private_key);
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lasso_release_list_of_gobjects(server->private_data->svc_metadatas);
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if (server->services) {
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g_hash_table_destroy(server->services);
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server->services = NULL;
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}
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/* free allocated memory for hash tables */
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lasso_mem_debug("LassoServer", "Providers", server->providers);
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if (server->providers) {
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g_hash_table_destroy(server->providers);
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server->providers = NULL;
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}
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G_OBJECT_CLASS(parent_class)->dispose(G_OBJECT(server));
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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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LassoServer *server = LASSO_SERVER(object);
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int i = 0;
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g_free(server->private_key);
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if (server->private_key_password) {
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/* don't use memset() because it may be optimised away by
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* compiler (since the string is freed just after */
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while (server->private_key_password[i])
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server->private_key_password[i++] = 0;
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g_free(server->private_key_password);
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}
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g_free(server->certificate);
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g_free(server->private_data);
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G_OBJECT_CLASS(parent_class)->finalize(G_OBJECT(server));
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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(LassoServer *server)
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{
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server->private_data = g_new(LassoServerPrivate, 1);
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server->private_data->dispose_has_run = FALSE;
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server->private_data->encryption_private_key = NULL;
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server->private_data->svc_metadatas = NULL;
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server->providers = g_hash_table_new_full(
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g_str_hash, g_str_equal, g_free,
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g_object_unref);
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server->private_key = NULL;
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server->private_key_password = NULL;
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server->certificate = NULL;
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server->signature_method = LASSO_SIGNATURE_METHOD_RSA_SHA1;
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server->services = g_hash_table_new_full(g_str_hash, g_str_equal,
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(GDestroyNotify)g_free,
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g_object_unref);
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}
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static void
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class_init(LassoServerClass *klass)
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{
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LassoNodeClass *nclass = LASSO_NODE_CLASS(klass);
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parent_class = g_type_class_peek_parent(klass);
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nclass->node_data = g_new0(LassoNodeClassData, 1);
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lasso_node_class_set_nodename(nclass, "Server");
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lasso_node_class_set_ns(nclass, LASSO_LASSO_HREF, LASSO_LASSO_PREFIX);
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lasso_node_class_add_snippets(nclass, schema_snippets);
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nclass->get_xmlNode = get_xmlNode;
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nclass->init_from_xml = init_from_xml;
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G_OBJECT_CLASS(klass)->dispose = dispose;
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G_OBJECT_CLASS(klass)->finalize = finalize;
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}
|
|
|
|
GType
|
|
lasso_server_get_type()
|
|
{
|
|
static GType this_type = 0;
|
|
|
|
if (!this_type) {
|
|
static const GTypeInfo this_info = {
|
|
sizeof (LassoServerClass),
|
|
NULL,
|
|
NULL,
|
|
(GClassInitFunc) class_init,
|
|
NULL,
|
|
NULL,
|
|
sizeof(LassoServer),
|
|
0,
|
|
(GInstanceInitFunc) instance_init,
|
|
NULL
|
|
};
|
|
|
|
this_type = g_type_register_static(LASSO_TYPE_PROVIDER,
|
|
"LassoServer", &this_info, 0);
|
|
}
|
|
return this_type;
|
|
}
|
|
|
|
/**
|
|
* lasso_server_new:
|
|
* @metadata: path to the provider metadata file or NULL, for a LECP server
|
|
* @private_key: path to the the server private key file or NULL
|
|
* @private_key_password: password to private key if it is encrypted, or NULL
|
|
* @certificate: path to the server certificate file, or NULL
|
|
*
|
|
* Creates a new #LassoServer.
|
|
*
|
|
* Return value: a newly created #LassoServer object; or NULL if an error
|
|
* occured
|
|
**/
|
|
LassoServer*
|
|
lasso_server_new(const gchar *metadata,
|
|
const gchar *private_key,
|
|
const gchar *private_key_password,
|
|
const gchar *certificate)
|
|
{
|
|
LassoServer *server;
|
|
|
|
server = g_object_new(LASSO_TYPE_SERVER, NULL);
|
|
|
|
/* metadata can be NULL (if server is a LECP) */
|
|
if (metadata != NULL) {
|
|
if (lasso_provider_load_metadata(LASSO_PROVIDER(server), metadata) == FALSE) {
|
|
message(G_LOG_LEVEL_CRITICAL,
|
|
"Failed to load metadata from %s.", metadata);
|
|
lasso_node_destroy(LASSO_NODE(server));
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
lasso_assign_string(server->private_key, private_key);
|
|
lasso_assign_string(server->private_key_password, private_key_password);
|
|
lasso_assign_string(server->certificate, certificate);
|
|
|
|
return server;
|
|
}
|
|
|
|
/**
|
|
* lasso_server_new_from_buffers:
|
|
* @metadata: NULL terminated string containing the content of an ID-FF 1.2 metadata file
|
|
* @privatekey: NULL terminated string containing a PEM formatted private key
|
|
* @private_key_password: a NULL terminated string which is the optional password of the private key
|
|
* @certificate: NULL terminated string containing a PEM formatted X509 certificate
|
|
*
|
|
* Creates a new #LassoServer.
|
|
*
|
|
* Return value: a newly created #LassoServer object; or NULL if an error occured
|
|
*/
|
|
LassoServer*
|
|
lasso_server_new_from_buffers(const char *metadata, const char *private_key_content, const char
|
|
*private_key_password, const char *certificate_content)
|
|
{
|
|
LassoServer *server;
|
|
|
|
server = g_object_new(LASSO_TYPE_SERVER, NULL);
|
|
/* metadata can be NULL (if server is a LECP) */
|
|
if (metadata != NULL) {
|
|
if (lasso_provider_load_metadata_from_buffer(LASSO_PROVIDER(server), metadata) == FALSE) {
|
|
message(G_LOG_LEVEL_CRITICAL,
|
|
"Failed to load metadata from preloaded buffer");
|
|
lasso_node_destroy(LASSO_NODE(server));
|
|
return NULL;
|
|
}
|
|
}
|
|
lasso_assign_string(server->private_key, private_key_content);
|
|
lasso_assign_string(server->private_key_password, private_key_password);
|
|
lasso_assign_string(server->certificate, certificate_content);
|
|
|
|
return server;
|
|
}
|
|
/**
|
|
* lasso_server_new_from_dump:
|
|
* @dump: XML server dump
|
|
*
|
|
* Restores the @dump to a new #LassoServer.
|
|
*
|
|
* Return value: a newly created #LassoServer; or NULL if an error occured
|
|
**/
|
|
LassoServer*
|
|
lasso_server_new_from_dump(const gchar *dump)
|
|
{
|
|
LassoNode *server;
|
|
server = lasso_node_new_from_dump(dump);
|
|
if (server == NULL)
|
|
return NULL;
|
|
|
|
if (LASSO_IS_SERVER(server) == FALSE) {
|
|
lasso_node_destroy(LASSO_NODE(server));
|
|
return NULL;
|
|
}
|
|
return LASSO_SERVER(server);
|
|
}
|
|
|
|
/**
|
|
* lasso_server_dump:
|
|
* @server: a #LassoServer
|
|
*
|
|
* Dumps @server content to an XML string.
|
|
*
|
|
* Return value: the dump string. It must be freed by the caller.
|
|
**/
|
|
gchar*
|
|
lasso_server_dump(LassoServer *server)
|
|
{
|
|
return lasso_node_dump(LASSO_NODE(server));
|
|
}
|
|
|