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lasso/lasso/id-ff/login.c

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/* $Id$
*
* Lasso - A free implementation of the Liberty Alliance specifications.
*
* Copyright (C) 2004, 2005 Entr'ouvert
* http://lasso.entrouvert.org
*
* Authors: See AUTHORS file in top-level directory.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <xmlsec/base64.h>
#include <lasso/xml/lib_authentication_statement.h>
#include <lasso/xml/lib_subject.h>
#include <lasso/xml/samlp_response.h>
#include <lasso/id-ff/login.h>
#include <lasso/id-ff/provider.h>
#include <lasso/id-ff/profileprivate.h>
#include <lasso/id-ff/providerprivate.h>
#include <lasso/id-ff/serverprivate.h>
#include <lasso/id-ff/sessionprivate.h>
struct _LassoLoginPrivate
{
char *soap_request_msg;
};
/*****************************************************************************/
/* static methods/functions */
/*****************************************************************************/
/**
* lasso_login_build_assertion:
* @login: a #LassoLogin
* @authenticationMethod: the authentication method
* @authenticationInstant: the time at which the authentication took place
* @reauthenticateOnOrAfter: the time at, or after which the service provider
* must reauthenticates the principal with the identity provider
* @notBefore: the earliest time instant at which the assertion is valid
* @notOnOrAfter: the time instant at which the assertion has expired
*
* Builds an assertion and stores it in profile session.
* @authenticationInstant, reauthenticateOnOrAfter, @notBefore and
* @notOnOrAfter may be NULL. If @authenticationInstant is NULL, the current
* time will be used. Time values must be encoded in UTC.
*
* Return value: 0 on success; or a negative value otherwise.
**/
int
lasso_login_build_assertion(LassoLogin *login,
const char *authenticationMethod,
const char *authenticationInstant,
const char *reauthenticateOnOrAfter,
const char *notBefore,
const char *notOnOrAfter)
{
LassoSamlAssertion *assertion;
LassoLibAuthenticationStatement *as;
LassoSamlNameIdentifier *nameIdentifier;
LassoProfile *profile;
LassoFederation *federation;
g_return_val_if_fail(LASSO_IS_LOGIN(login), LASSO_PARAM_ERROR_BAD_TYPE_OR_NULL_OBJ);
/* federation MAY be NULL */
profile = LASSO_PROFILE(login);
if (profile->identity == NULL)
return LASSO_PROFILE_ERROR_IDENTITY_NOT_FOUND;
federation = g_hash_table_lookup(profile->identity->federations,
profile->remote_providerID);
assertion = LASSO_SAML_ASSERTION(lasso_lib_assertion_new_full(
LASSO_PROVIDER(profile->server)->ProviderID,
profile->request->RequestID,
profile->remote_providerID, notBefore, notOnOrAfter));
if (strcmp(login->nameIDPolicy, LASSO_LIB_NAMEID_POLICY_TYPE_ONE_TIME) == 0) {
/* if NameIDPolicy is 'onetime', don't use a federation */
nameIdentifier = lasso_saml_name_identifier_new();
nameIdentifier->content = lasso_build_unique_id(32);
nameIdentifier->NameQualifier = g_strdup(
LASSO_PROVIDER(profile->server)->ProviderID);
nameIdentifier->Format = g_strdup(LASSO_LIB_NAME_IDENTIFIER_FORMAT_ONE_TIME);
as = lasso_lib_authentication_statement_new_full(authenticationMethod,
authenticationInstant, reauthenticateOnOrAfter,
NULL, nameIdentifier);
profile->nameIdentifier = nameIdentifier;
} else {
as = lasso_lib_authentication_statement_new_full(authenticationMethod,
authenticationInstant, reauthenticateOnOrAfter,
federation->remote_nameIdentifier,
federation->local_nameIdentifier);
}
LASSO_SAML_ASSERTION(assertion)->AuthenticationStatement =
LASSO_SAML_AUTHENTICATION_STATEMENT(as);
if (profile->server->certificate) {
assertion->sign_type = LASSO_SIGNATURE_TYPE_WITHX509;
} else {
assertion->sign_type = LASSO_SIGNATURE_TYPE_SIMPLE;
}
assertion->sign_method = profile->server->signature_method;
assertion->private_key_file = g_strdup(profile->server->private_key);
assertion->certificate_file = g_strdup(profile->server->certificate);
if (login->protocolProfile == LASSO_LOGIN_PROTOCOL_PROFILE_BRWS_POST) {
/* only add assertion if response is an AuthnResponse */
LASSO_SAMLP_RESPONSE(profile->response)->Assertion = g_list_append(NULL,
LASSO_SAML_ASSERTION(assertion));
}
/* store assertion in session object */
if (profile->session == NULL) {
profile->session = lasso_session_new();
}
if (login->assertion)
lasso_node_destroy(LASSO_NODE(login->assertion));
login->assertion = LASSO_SAML_ASSERTION(g_object_ref(assertion));
lasso_session_add_assertion(profile->session, profile->remote_providerID,
LASSO_SAML_ASSERTION(g_object_ref(assertion)));
return 0;
}
/**
* lasso_login_must_ask_for_consent_private:
* @login: a #LassoLogin
*
* Evaluates if it is necessary to ask the consent of the Principal.
* This method doesn't take the isPassive value into account.
*
* Return value: TRUE or FALSE
**/
static gboolean
lasso_login_must_ask_for_consent_private(LassoLogin *login)
{
xmlChar *nameIDPolicy, *consent;
LassoProfile *profile = LASSO_PROFILE(login);
LassoFederation *federation = NULL;
nameIDPolicy = LASSO_LIB_AUTHN_REQUEST(profile->request)->NameIDPolicy;
if (nameIDPolicy == NULL || strcmp(nameIDPolicy, LASSO_LIB_NAMEID_POLICY_TYPE_NONE) == 0)
return FALSE;
if (strcmp(nameIDPolicy, LASSO_LIB_NAMEID_POLICY_TYPE_ONE_TIME) == 0)
return FALSE;
if (strcmp(nameIDPolicy, LASSO_LIB_NAMEID_POLICY_TYPE_FEDERATED) != 0 &&
strcmp(nameIDPolicy, LASSO_LIB_NAMEID_POLICY_TYPE_ANY) != 0) {
message(G_LOG_LEVEL_CRITICAL, "Unknown NameIDPolicy: %s", nameIDPolicy);
/* NameIDPolicy is considered empty (None value) if its value is unknown/invalid */
return TRUE;
}
if (profile->identity != NULL) {
federation = g_hash_table_lookup(profile->identity->federations,
profile->remote_providerID);
if (federation)
return FALSE;
}
consent = LASSO_LIB_AUTHN_REQUEST(profile->request)->consent;
if (consent == NULL)
return TRUE;
if (strcmp(consent, LASSO_LIB_CONSENT_OBTAINED) == 0)
return FALSE;
if (strcmp(consent, LASSO_LIB_CONSENT_OBTAINED_PRIOR) == 0)
return FALSE;
if (strcmp(consent, LASSO_LIB_CONSENT_OBTAINED_CURRENT_IMPLICIT) == 0)
return FALSE;
if (strcmp(consent, LASSO_LIB_CONSENT_OBTAINED_CURRENT_EXPLICIT) == 0)
return FALSE;
if (strcmp(consent, LASSO_LIB_CONSENT_UNAVAILABLE) == 0)
return TRUE;
if (strcmp(consent, LASSO_LIB_CONSENT_INAPPLICABLE) == 0)
return TRUE;
message(G_LOG_LEVEL_CRITICAL, "Unknown consent value: %s", consent);
/* we consider consent as empty if its value is unknown/invalid */
return TRUE;
}
/**
* lasso_login_process_federation:
* @login: a #LassoLogin
* @is_consent_obtained: whether user consent has been obtained
*
* Return value: 0 on success; or a negative value otherwise.
**/
static gint
lasso_login_process_federation(LassoLogin *login, gboolean is_consent_obtained)
{
LassoFederation *federation = NULL;
LassoProfile *profile = LASSO_PROFILE(login);
char *nameIDPolicy;
gint ret = 0;
g_return_val_if_fail(LASSO_IS_LOGIN(login), LASSO_PARAM_ERROR_BAD_TYPE_OR_NULL_OBJ);
/* verify if identity already exists else create it */
if (profile->identity == NULL) {
profile->identity = lasso_identity_new();
}
/* get nameIDPolicy in lib:AuthnRequest */
nameIDPolicy = LASSO_LIB_AUTHN_REQUEST(profile->request)->NameIDPolicy;
if (nameIDPolicy == NULL)
nameIDPolicy = LASSO_LIB_NAMEID_POLICY_TYPE_NONE;
login->nameIDPolicy = g_strdup(nameIDPolicy);
/* if nameIDPolicy is 'onetime' => nothing to do */
if (strcmp(nameIDPolicy, LASSO_LIB_NAMEID_POLICY_TYPE_ONE_TIME) == 0) {
return 0;
}
/* search a federation in the identity */
federation = g_hash_table_lookup(LASSO_PROFILE(login)->identity->federations,
LASSO_PROFILE(login)->remote_providerID);
if (strcmp(nameIDPolicy, LASSO_LIB_NAMEID_POLICY_TYPE_NONE) == 0) {
/* a federation MUST exist */
if (federation == NULL) {
/* if protocolProfile is LASSO_LOGIN_PROTOCOL_PROFILE_BRWS_POST
* set StatusCode to FederationDoesNotExist in lib:AuthnResponse
*/
lasso_profile_set_response_status(LASSO_PROFILE(login),
LASSO_LIB_STATUS_CODE_FEDERATION_DOES_NOT_EXIST);
return LASSO_LOGIN_ERROR_FEDERATION_NOT_FOUND;
}
LASSO_PROFILE(login)->nameIdentifier = g_object_ref(
LASSO_SAML_NAME_IDENTIFIER(federation->local_nameIdentifier));
return 0;
}
if (strcmp(nameIDPolicy, LASSO_LIB_NAMEID_POLICY_TYPE_FEDERATED) != 0 &&
strcmp(nameIDPolicy, LASSO_LIB_NAMEID_POLICY_TYPE_ANY) != 0) {
return critical_error(LASSO_LOGIN_ERROR_INVALID_NAMEIDPOLICY, nameIDPolicy);
}
/* consent is necessary, it should be obtained via consent attribute
* in lib:AuthnRequest or IDP should ask the Principal
*/
if (lasso_login_must_ask_for_consent_private(login) && !is_consent_obtained) {
if (strcmp(nameIDPolicy, LASSO_LIB_NAMEID_POLICY_TYPE_ANY) == 0) {
/* if the NameIDPolicy element is 'any' and if the policy
* for the Principal forbids federation, then evaluation
* MAY proceed as if the value was 'onetime'.
*/
g_free(login->nameIDPolicy);
login->nameIDPolicy = g_strdup(LASSO_LIB_NAMEID_POLICY_TYPE_ONE_TIME);
return 0;
}
/* if protocolProfile is LASSO_LOGIN_PROTOCOL_PROFILE_BRWS_POST
* set StatusCode to FederationDoesNotExist in lib:AuthnResponse
*/
/* FIXME : is it the correct value for the StatusCode ? */
lasso_profile_set_response_status(LASSO_PROFILE(login),
LASSO_LIB_STATUS_CODE_FEDERATION_DOES_NOT_EXIST);
return LASSO_LOGIN_ERROR_CONSENT_NOT_OBTAINED;
}
if (federation == NULL) {
federation = lasso_federation_new(LASSO_PROFILE(login)->remote_providerID);
lasso_federation_build_local_name_identifier(federation,
LASSO_PROVIDER(LASSO_PROFILE(login)->server)->ProviderID,
LASSO_LIB_NAME_IDENTIFIER_FORMAT_FEDERATED,
NULL);
lasso_identity_add_federation(LASSO_PROFILE(login)->identity, federation);
}
LASSO_PROFILE(login)->nameIdentifier =
g_object_ref(LASSO_SAML_NAME_IDENTIFIER(federation->local_nameIdentifier));
return ret;
}
static gint
lasso_login_process_response_status_and_assertion(LassoLogin *login)
{
LassoProvider *idp;
LassoSamlpResponse *response;
char *status_value;
int ret = 0;
g_return_val_if_fail(LASSO_IS_LOGIN(login), LASSO_PARAM_ERROR_BAD_TYPE_OR_NULL_OBJ);
response = LASSO_SAMLP_RESPONSE(LASSO_PROFILE(login)->response);
if (response->Status == NULL || ! LASSO_IS_SAMLP_STATUS(response->Status) ||
response->Status->StatusCode == NULL ||
response->Status->StatusCode->Value == NULL) {
return LASSO_ERROR_UNDEFINED;
}
status_value = response->Status->StatusCode->Value;
if (status_value && strcmp(status_value, LASSO_SAML_STATUS_CODE_SUCCESS) != 0) {
if (strcmp(status_value, LASSO_SAML_STATUS_CODE_REQUEST_DENIED) == 0)
return LASSO_LOGIN_ERROR_REQUEST_DENIED;
return LASSO_LOGIN_ERROR_STATUS_NOT_SUCCESS;
}
if (response->Assertion) {
LassoProfile *profile = LASSO_PROFILE(login);
LassoSamlAssertion *assertion = response->Assertion->data;
idp = g_hash_table_lookup(profile->server->providers, profile->remote_providerID);
if (idp == NULL)
return LASSO_ERROR_UNDEFINED;
/* FIXME: verify assertion signature */
/* store NameIdentifier */
if (assertion->AuthenticationStatement == NULL) {
return LASSO_ERROR_UNDEFINED;
}
profile->nameIdentifier = g_object_ref(
LASSO_SAML_SUBJECT_STATEMENT_ABSTRACT(
assertion->AuthenticationStatement
)->Subject->NameIdentifier);
if (LASSO_PROFILE(login)->nameIdentifier == NULL)
return LASSO_ERROR_UNDEFINED;
}
return ret;
}
/*****************************************************************************/
/* public methods */
/*****************************************************************************/
/**
* lasso_login_accept_sso:
* @login: a #LassoLogin
*
* Gets the assertion of the response and adds it into the session.
* Builds a federation with the 2 name identifiers of the assertion
* and adds it into the identity.
* If the session or the identity are NULL, they are created.
*
* Return value: 0 on success; or a negative value otherwise.
**/
gint
lasso_login_accept_sso(LassoLogin *login)
{
LassoProfile *profile;
LassoSamlAssertion *assertion;
LassoSamlNameIdentifier *ni, *idp_ni = NULL;
LassoFederation *federation;
LassoSamlSubjectStatementAbstract *authentication_statement;
g_return_val_if_fail(LASSO_IS_LOGIN(login), LASSO_PARAM_ERROR_BAD_TYPE_OR_NULL_OBJ);
profile = LASSO_PROFILE(login);
if (profile->identity == NULL)
profile->identity = lasso_identity_new();
if (profile->session == NULL)
profile->session = lasso_session_new();
if (profile->response == NULL)
return LASSO_ERROR_UNDEFINED;
if (LASSO_SAMLP_RESPONSE(profile->response)->Assertion == NULL)
return LASSO_ERROR_UNDEFINED;
assertion = LASSO_SAMLP_RESPONSE(profile->response)->Assertion->data;
if (assertion == NULL)
return LASSO_ERROR_UNDEFINED;
lasso_session_add_assertion(profile->session, profile->remote_providerID,
g_object_ref(assertion));
authentication_statement = LASSO_SAML_SUBJECT_STATEMENT_ABSTRACT(
assertion->AuthenticationStatement);
ni = authentication_statement->Subject->NameIdentifier;
if (ni == NULL)
return LASSO_ERROR_UNDEFINED;
if (LASSO_IS_LIB_SUBJECT(authentication_statement->Subject)) {
idp_ni = LASSO_LIB_SUBJECT(
authentication_statement->Subject)->IDPProvidedNameIdentifier;
}
/* create federation, only if nameidentifier format is Federated */
if (strcmp(ni->Format, LASSO_LIB_NAME_IDENTIFIER_FORMAT_FEDERATED) == 0) {
federation = lasso_federation_new(LASSO_PROFILE(login)->remote_providerID);
if (ni != NULL && idp_ni != NULL) {
federation->local_nameIdentifier = g_object_ref(ni);
federation->remote_nameIdentifier = g_object_ref(idp_ni);
} else {
federation->remote_nameIdentifier = g_object_ref(ni);
}
/* add federation in identity */
lasso_identity_add_federation(LASSO_PROFILE(login)->identity, federation);
}
return 0;
}
/**
* lasso_login_build_artifact_msg:
* @login: a #LassoLogin
* @http_method: the HTTP method to send the artifact (REDIRECT or POST)
*
* Builds a SAML artifact. Depending of the HTTP method, the data for the sending of
* the artifact are stored in @msg_url (REDIRECT) or @msg_url, @msg_body and
* @msg_relayState (POST).
*
* Return value: 0 on success; or a negative value otherwise.
**/
gint
lasso_login_build_artifact_msg(LassoLogin *login, LassoHttpMethod http_method)
{
LassoProvider *remote_provider;
LassoProfile *profile;
gchar *url;
xmlSecByte samlArt[42], *b64_samlArt, *relayState;
xmlChar *identityProviderSuccinctID;
gint ret = 0;
g_return_val_if_fail(LASSO_IS_LOGIN(login), LASSO_PARAM_ERROR_BAD_TYPE_OR_NULL_OBJ);
if (http_method != LASSO_HTTP_METHOD_REDIRECT && http_method != LASSO_HTTP_METHOD_POST) {
return critical_error(LASSO_PROFILE_ERROR_INVALID_HTTP_METHOD);
}
profile = LASSO_PROFILE(login);
/* ProtocolProfile must be BrwsArt */
if (login->protocolProfile != LASSO_LOGIN_PROTOCOL_PROFILE_BRWS_ART) {
return critical_error(LASSO_PROFILE_ERROR_INVALID_PROTOCOLPROFILE);
}
if (profile->remote_providerID == NULL)
return critical_error(LASSO_PROFILE_ERROR_MISSING_REMOTE_PROVIDERID);
/* build artifact infos */
remote_provider = g_hash_table_lookup(profile->server->providers,
profile->remote_providerID);
if (LASSO_IS_PROVIDER(remote_provider) == FALSE)
return critical_error(LASSO_SERVER_ERROR_PROVIDER_NOT_FOUND,
profile->remote_providerID);
url = lasso_provider_get_assertion_consumer_service_url(remote_provider,
LASSO_LIB_AUTHN_REQUEST(profile->request)->AssertionConsumerServiceID);
if (url == NULL) {
return critical_error(LASSO_PROFILE_ERROR_UNKNOWN_PROFILE_URL);
}
identityProviderSuccinctID = lasso_sha1(
LASSO_PROVIDER(profile->server)->ProviderID);
/* Artifact Format is described in "Binding Profiles", 3.2.2.2. */
memcpy(samlArt, "\000\003", 2); /* type code */
memcpy(samlArt+2, identityProviderSuccinctID, 20);
lasso_build_random_sequence(samlArt+22, 20);
xmlFree(identityProviderSuccinctID);
b64_samlArt = xmlSecBase64Encode(samlArt, 42, 0);
relayState = xmlURIEscapeStr(LASSO_LIB_AUTHN_REQUEST(profile->request)->RelayState, NULL);
if (http_method == LASSO_HTTP_METHOD_REDIRECT) {
xmlChar *escaped_artifact = xmlURIEscapeStr(b64_samlArt, NULL);
if (relayState == NULL) {
profile->msg_url = g_strdup_printf("%s?SAMLart=%s", url, escaped_artifact);
} else {
profile->msg_url = g_strdup_printf(
"%s?SAMLart=%s&RelayState=%s",
url, escaped_artifact, relayState);
}
xmlFree(escaped_artifact);
}
if (http_method == LASSO_HTTP_METHOD_POST) {
profile->msg_url = g_strdup(url);
profile->msg_body = g_strdup(b64_samlArt);
if (relayState != NULL) {
profile->msg_relayState = g_strdup(relayState);
}
}
login->assertionArtifact = g_strdup(b64_samlArt);
xmlFree(url);
xmlFree(b64_samlArt);
xmlFree(relayState);
if (profile->session == NULL && strcmp(LASSO_SAMLP_RESPONSE(
profile->response)->Status->StatusCode->Value,
"samlp:Success") != 0) {
profile->session = lasso_session_new();
lasso_session_add_status(profile->session, profile->remote_providerID,
g_object_ref(LASSO_SAMLP_RESPONSE(profile->response)->Status));
}
return ret;
}
/**
* lasso_login_build_authn_request_msg:
* @login: a #LassoLogin
*
* Converts profile authentication request (@request member) into a Liberty
* message, either an URL in HTTP-Redirect profile or an URL and a field value
* in Browser-POST (form) profile.
*
* The URL is set into the @msg_url member and the eventual field value (LAREQ)
* is set into the @msg_body member.
*
* Return value: 0 on success; or a negative value otherwise.
**/
gint
lasso_login_build_authn_request_msg(LassoLogin *login)
{
LassoProvider *provider, *remote_provider;
LassoProfile *profile;
char *md_authnRequestsSigned, *url, *query, *lareq, *protocolProfile;
LassoProviderRole role;
gboolean must_sign;
gint ret = 0;
g_return_val_if_fail(LASSO_IS_LOGIN(login), LASSO_PARAM_ERROR_BAD_TYPE_OR_NULL_OBJ);
profile = LASSO_PROFILE(login);
provider = LASSO_PROVIDER(profile->server);
remote_provider = g_hash_table_lookup(profile->server->providers,
profile->remote_providerID);
if (LASSO_IS_PROVIDER(remote_provider) == FALSE) {
return critical_error(LASSO_SERVER_ERROR_PROVIDER_NOT_FOUND,
profile->remote_providerID);
}
protocolProfile = LASSO_LIB_AUTHN_REQUEST(profile->request)->ProtocolProfile;
if (protocolProfile == NULL)
protocolProfile = LASSO_LIB_PROTOCOL_PROFILE_BRWS_ART;
role = provider->role;
provider->role = LASSO_PROVIDER_ROLE_SP; /* we act as an SP for sure here */
if (lasso_provider_has_protocol_profile(remote_provider,
LASSO_MD_PROTOCOL_TYPE_SINGLE_SIGN_ON, protocolProfile) == FALSE) {
provider->role = role;
return LASSO_PROFILE_ERROR_UNSUPPORTED_PROFILE;
}
/* check if authnRequest must be signed */
md_authnRequestsSigned = lasso_provider_get_metadata_one(provider, "AuthnRequestsSigned");
must_sign = (md_authnRequestsSigned && strcmp(md_authnRequestsSigned, "true") == 0);
g_free(md_authnRequestsSigned);
provider->role = role;
if (login->http_method == LASSO_HTTP_METHOD_REDIRECT) {
/* REDIRECT -> query */
if (must_sign) {
query = lasso_node_export_to_query(LASSO_NODE(profile->request),
profile->server->signature_method,
profile->server->private_key);
} else {
query = lasso_node_export_to_query(
LASSO_NODE(profile->request), 0, NULL);
}
if (query == NULL) {
return critical_error(LASSO_PROFILE_ERROR_BUILDING_QUERY_FAILED);
}
/* get SingleSignOnServiceURL metadata */
url = lasso_provider_get_metadata_one(remote_provider, "SingleSignOnServiceURL");
if (url == NULL) {
return critical_error(LASSO_PROFILE_ERROR_UNKNOWN_PROFILE_URL);
}
profile->msg_url = g_strdup_printf("%s?%s", url, query);
profile->msg_body = NULL;
g_free(query);
g_free(url);
}
if (login->http_method == LASSO_HTTP_METHOD_POST) {
if (must_sign) {
profile->request->private_key_file = profile->server->private_key;
profile->request->certificate_file = profile->server->certificate;
}
lareq = lasso_node_export_to_base64(LASSO_NODE(profile->request));
if (lareq == NULL) {
message(G_LOG_LEVEL_CRITICAL,
"Failed to export AuthnRequest (Base64 encoded).");
return -5;
}
profile->msg_url = lasso_provider_get_metadata_one(
remote_provider, "SingleSignOnServiceURL");
profile->msg_body = lareq;
}
return ret;
}
/**
* lasso_login_build_authn_response_msg:
* @login: a #LassoLogin
*
* Converts profile authentication response (@response member) into a Liberty
* message.
*
* The URL is set into the @msg_url member and the field value (LARES) is set
* into the @msg_body member.
*
* Return value: 0 on success; or a negative value otherwise.
**/
gint
lasso_login_build_authn_response_msg(LassoLogin *login)
{
LassoProvider *remote_provider;
LassoProfile *profile;
g_return_val_if_fail(LASSO_IS_LOGIN(login), LASSO_PARAM_ERROR_BAD_TYPE_OR_NULL_OBJ);
profile = LASSO_PROFILE(login);
/* ProtocolProfile must be BrwsPost */
if (login->protocolProfile != LASSO_LOGIN_PROTOCOL_PROFILE_BRWS_POST) {
return critical_error(LASSO_PROFILE_ERROR_INVALID_PROTOCOLPROFILE);
}
/* Countermeasure: The issuer should sign <lib:AuthnResponse> messages.
* (binding and profiles (1.2errata2, page 65) */
profile->response->sign_type = LASSO_SIGNATURE_TYPE_WITHX509;
profile->response->sign_method = LASSO_SIGNATURE_METHOD_RSA_SHA1;
profile->response->private_key_file = profile->server->private_key;
profile->response->certificate_file = profile->server->certificate;
/* build an lib:AuthnResponse base64 encoded */
profile->msg_body = lasso_node_export_to_base64(LASSO_NODE(profile->response));
remote_provider = g_hash_table_lookup(LASSO_PROFILE(login)->server->providers,
LASSO_PROFILE(login)->remote_providerID);
if (LASSO_IS_PROVIDER(remote_provider) == FALSE)
return critical_error(LASSO_SERVER_ERROR_PROVIDER_NOT_FOUND,
profile->remote_providerID);
profile->msg_url = lasso_provider_get_assertion_consumer_service_url(remote_provider,
LASSO_LIB_AUTHN_REQUEST(profile->request)->AssertionConsumerServiceID);
return 0;
}
/**
* lasso_login_build_request_msg:
* @login: a #LassoLogin
*
* Converts profile artifact request into a Liberty SOAP message.
*
* The URL is set into the @msg_url member and the SOAP message is set into the
* @msg_body member.
*
* Return value: 0 on success; or a negative value otherwise.
**/
gint
lasso_login_build_request_msg(LassoLogin *login)
{
LassoProvider *remote_provider;
LassoProfile *profile;
g_return_val_if_fail(LASSO_IS_LOGIN(login), LASSO_PARAM_ERROR_BAD_TYPE_OR_NULL_OBJ);
profile = LASSO_PROFILE(login);
profile->request->private_key_file = profile->server->private_key;
profile->request->certificate_file = profile->server->certificate;
LASSO_PROFILE(login)->msg_body = lasso_node_export_to_soap(LASSO_NODE(profile->request));
remote_provider = g_hash_table_lookup(profile->server->providers,
profile->remote_providerID);
if (LASSO_IS_PROVIDER(remote_provider) == FALSE) {
return critical_error(LASSO_SERVER_ERROR_PROVIDER_NOT_FOUND,
profile->remote_providerID);
}
profile->msg_url = lasso_provider_get_metadata_one(remote_provider, "SoapEndpoint");
return 0;
}
/**
* lasso_login_build_response_msg:
* @login: a #LassoLogin
* @remote_providerID: service provider ID
*
* Converts profile assertion response (@response member) into a Liberty SOAP
* messageresponse message.
*
* The URL is set into the @msg_url member and the SOAP message is set into the
* @msg_body member.
*
* Return value: 0 on success; or a negative value otherwise.
**/
gint
lasso_login_build_response_msg(LassoLogin *login, gchar *remote_providerID)
{
LassoProvider *remote_provider;
LassoProfile *profile;
LassoSamlAssertion *assertion;
gint ret = 0;
g_return_val_if_fail(LASSO_IS_LOGIN(login), -1);
profile = LASSO_PROFILE(login);
profile->response = lasso_samlp_response_new();
profile->response->InResponseTo = g_strdup(profile->request->RequestID);
LASSO_SAMLP_RESPONSE_ABSTRACT(profile->response)->sign_type = LASSO_SIGNATURE_TYPE_WITHX509;
LASSO_SAMLP_RESPONSE_ABSTRACT(profile->response)->sign_method =
LASSO_SIGNATURE_METHOD_RSA_SHA1;
if (remote_providerID != NULL) {
profile->remote_providerID = g_strdup(remote_providerID);
remote_provider = g_hash_table_lookup(profile->server->providers,
profile->remote_providerID);
ret = lasso_provider_verify_signature(remote_provider,
login->private_data->soap_request_msg,
"RequestID", LASSO_MESSAGE_FORMAT_SOAP);
g_free(login->private_data->soap_request_msg);
login->private_data->soap_request_msg = NULL;
/* changed status code into RequestDenied
if signature is invalid or not found
if an error occurs during verification */
if (ret != 0) {
lasso_profile_set_response_status(profile,
LASSO_SAML_STATUS_CODE_REQUEST_DENIED);
}
if (profile->session) {
/* get assertion in session and add it in response */
assertion = lasso_session_get_assertion(profile->session,
profile->remote_providerID);
if (assertion) {
LASSO_SAMLP_RESPONSE(profile->response)->Assertion =
g_list_append(NULL, g_object_ref(assertion));
lasso_profile_set_response_status(profile,
LASSO_SAML_STATUS_CODE_SUCCESS);
lasso_session_remove_status(profile->session, remote_providerID);
} else {
LassoSamlpStatus *status;
/* no assertion, get back status code */
status = lasso_session_get_status(profile->session,
remote_providerID);
if (status) {
lasso_node_destroy(LASSO_NODE(LASSO_SAMLP_RESPONSE(
profile->response)->Status));
LASSO_SAMLP_RESPONSE(profile->response)->Status =
g_object_ref(status);
lasso_session_remove_status(profile->session,
remote_providerID);
}
}
}
} else {
lasso_profile_set_response_status(profile, LASSO_SAML_STATUS_CODE_REQUEST_DENIED);
}
profile->response->private_key_file = profile->server->private_key;
profile->response->certificate_file = profile->server->certificate;
profile->msg_body = lasso_node_export_to_soap(LASSO_NODE(profile->response));
return ret;
}
/**
* lasso_login_destroy:
* @login: a #LassoLogin
*
* Destroys a #LassoLogin object.
**/
void
lasso_login_destroy(LassoLogin *login)
{
lasso_node_destroy(LASSO_NODE(login));
}
/**
* lasso_login_init_authn_request:
* @login: a #LassoLogin
* @remote_providerID: the providerID of the identity provider (may be NULL)
* @http_method: HTTP method to use for request transmission
*
* Initializes a new lib:AuthnRequest from current service provider to remote
* identity provider specified in @remote_providerID (if NULL the first known
* identity provider is used).
*
* Return value: 0 on success; or a negative value otherwise.
**/
gint
lasso_login_init_authn_request(LassoLogin *login, const gchar *remote_providerID,
LassoHttpMethod http_method)
{
LassoProfile *profile;
LassoProvider *remote_provider;
g_return_val_if_fail(LASSO_IS_LOGIN(login), LASSO_PARAM_ERROR_BAD_TYPE_OR_NULL_OBJ);
if (http_method != LASSO_HTTP_METHOD_REDIRECT && http_method != LASSO_HTTP_METHOD_POST) {
return critical_error(LASSO_PROFILE_ERROR_INVALID_HTTP_METHOD);
}
profile = LASSO_PROFILE(login);
/* clean state */
if (profile->remote_providerID)
g_free(profile->remote_providerID);
if (profile->request)
lasso_node_destroy(LASSO_NODE(profile->request));
if (remote_providerID != NULL) {
profile->remote_providerID = g_strdup(remote_providerID);
} else {
profile->remote_providerID = lasso_server_get_first_providerID(profile->server);
}
remote_provider = g_hash_table_lookup(profile->server->providers,
profile->remote_providerID);
if (LASSO_IS_PROVIDER(remote_provider) == FALSE)
return critical_error(LASSO_SERVER_ERROR_PROVIDER_NOT_FOUND,
profile->remote_providerID);
login->http_method = http_method;
profile->request = LASSO_SAMLP_REQUEST_ABSTRACT(lasso_lib_authn_request_new());
if (profile->request == NULL) {
return critical_error(LASSO_PROFILE_ERROR_BUILDING_REQUEST_FAILED);
}
profile->request->RequestID = lasso_build_unique_id(32);
profile->request->MajorVersion = LASSO_LIB_MAJOR_VERSION_N;
profile->request->MinorVersion = LASSO_LIB_MINOR_VERSION_N;
profile->request->IssueInstant = lasso_get_current_time();
LASSO_LIB_AUTHN_REQUEST(profile->request)->ProviderID = g_strdup(
LASSO_PROVIDER(profile->server)->ProviderID);
LASSO_LIB_AUTHN_REQUEST(profile->request)->RelayState = g_strdup(profile->msg_relayState);
if (http_method == LASSO_HTTP_METHOD_POST) {
profile->request->sign_method = LASSO_SIGNATURE_METHOD_RSA_SHA1;
profile->request->sign_type = LASSO_SIGNATURE_TYPE_WITHX509;
}
return 0;
}
/**
* lasso_login_init_request:
* @login: a #LassoLogin
* @response_msg: the authentication response received
* @response_http_method: the method used to receive the authentication
* response
*
* Initializes an artifact request. @response_msg is either the query string
* (in redirect mode) or the form LAREQ field (in browser-post mode).
*
* Return value: 0 on success; or a negative value otherwise.
**/
gint
lasso_login_init_request(LassoLogin *login, gchar *response_msg,
LassoHttpMethod response_http_method)
{
char **query_fields;
gint ret = 0;
int i;
char *artifact_b64 = NULL, *provider_succinct_id_b64;
char provider_succinct_id[21];
char artifact[43];
LassoSamlpRequestAbstract *request;
g_return_val_if_fail(LASSO_IS_LOGIN(login), LASSO_PARAM_ERROR_BAD_TYPE_OR_NULL_OBJ);
g_return_val_if_fail(response_msg != NULL, LASSO_PARAM_ERROR_INVALID_VALUE);
if (response_http_method != LASSO_HTTP_METHOD_REDIRECT &&
response_http_method != LASSO_HTTP_METHOD_POST) {
return critical_error(LASSO_PROFILE_ERROR_INVALID_HTTP_METHOD);
}
/* rebuild response (artifact) */
if (response_http_method == LASSO_HTTP_METHOD_REDIRECT) {
query_fields = urlencoded_to_strings(response_msg);
for (i=0; query_fields[i]; i++) {
if (strncmp(query_fields[i], "SAMLart=", 8) != 0) {
free(query_fields[i]);
continue;
}
artifact_b64 = g_strdup(query_fields[i]+8);
free(query_fields[i]);
}
free(query_fields);
}
if (response_http_method == LASSO_HTTP_METHOD_POST) {
artifact_b64 = g_strdup(response_msg);
}
i = xmlSecBase64Decode(artifact_b64, artifact, 43);
if (i < 0 || i > 42) {
g_free(artifact_b64);
return LASSO_ERROR_UNDEFINED;
}
if (artifact[0] != 0 || artifact[1] != 3) { /* wrong type code */
g_free(artifact_b64);
return LASSO_ERROR_UNDEFINED;
}
memcpy(provider_succinct_id, artifact+2, 20);
provider_succinct_id[20] = 0;
provider_succinct_id_b64 = xmlSecBase64Encode(provider_succinct_id, 20, 0);
LASSO_PROFILE(login)->remote_providerID = lasso_server_get_providerID_from_hash(
LASSO_PROFILE(login)->server, provider_succinct_id_b64);
xmlFree(provider_succinct_id_b64);
request = LASSO_SAMLP_REQUEST_ABSTRACT(lasso_samlp_request_new());
request->RequestID = lasso_build_unique_id(32);
request->MajorVersion = LASSO_LIB_MAJOR_VERSION_N;
request->MinorVersion = LASSO_LIB_MINOR_VERSION_N;
request->IssueInstant = lasso_get_current_time();
LASSO_SAMLP_REQUEST(request)->AssertionArtifact = artifact_b64;
request->sign_type = LASSO_SIGNATURE_TYPE_WITHX509;
request->sign_method = LASSO_SIGNATURE_METHOD_RSA_SHA1;
LASSO_PROFILE(login)->request = LASSO_SAMLP_REQUEST_ABSTRACT(request);
return ret;
}
/**
* lasso_login_init_idp_initiated_authn_request:
* @login: a #LassoLogin.
* @remote_providerID: the providerID of the remote service provider (may be
* NULL)
*
* Generates an authentication response without matching authentication
* request.
*
* If @remote_providerID is NULL, the first known provider is used.
*
* Return value: 0 on success; or a negative value otherwise.
**/
gint
lasso_login_init_idp_initiated_authn_request(LassoLogin *login,
const gchar *remote_providerID)
{
int rc;
LassoProfile *profile;
rc = lasso_login_init_authn_request(login, remote_providerID, LASSO_HTTP_METHOD_POST);
if (rc)
return rc;
profile = LASSO_PROFILE(login);
/* no RequestID attribute or it would be used in response assertion */
g_free(profile->request->RequestID);
profile->request->RequestID = NULL;
LASSO_LIB_AUTHN_REQUEST(profile->request)->NameIDPolicy = LASSO_LIB_NAMEID_POLICY_TYPE_ANY;
return 0;
}
/**
* lasso_login_must_ask_for_consent:
* @login: a #LassoLogin
*
* Evaluates if consent must be asked to the Principal to federate him.
*
* Return value: %TRUE if consent must be asked
**/
gboolean
lasso_login_must_ask_for_consent(LassoLogin *login)
{
if (lasso_login_must_ask_for_consent_private(login)) {
if (LASSO_LIB_AUTHN_REQUEST(LASSO_PROFILE(login)->request)->IsPassive)
return FALSE;
return TRUE;
}
return FALSE;
}
/**
* lasso_login_must_authenticate:
* @login: a #LassoLogin
*
* Evaluates if user must be authenticated.
*
* Return value: %TRUE if user must be authenticated
**/
gboolean
lasso_login_must_authenticate(LassoLogin *login)
{
LassoLibAuthnRequest *request;
g_return_val_if_fail(LASSO_IS_LOGIN(login), LASSO_PARAM_ERROR_BAD_TYPE_OR_NULL_OBJ);
request = LASSO_LIB_AUTHN_REQUEST(LASSO_PROFILE(login)->request);
/* get IsPassive and ForceAuthn in AuthnRequest if exists */
if ((request->ForceAuthn || LASSO_PROFILE(login)->session == NULL) &&
request->IsPassive == FALSE)
return TRUE;
if (LASSO_PROFILE(login)->identity == NULL && request->IsPassive &&
login->protocolProfile == LASSO_LOGIN_PROTOCOL_PROFILE_BRWS_POST) {
lasso_profile_set_response_status(LASSO_PROFILE(login),
LASSO_LIB_STATUS_CODE_NO_PASSIVE);
return FALSE;
}
return FALSE;
}
/**
* lasso_login_process_authn_request_msg:
* @login: a #LassoLogin
* @authn_request_msg: the authentication request received
*
* Processes received authentication request, checks it is signed correctly,
* checks if requested protocol profile is supported, etc.
*
* Return value: 0 on success; or a negative value otherwise.
**/
gint
lasso_login_process_authn_request_msg(LassoLogin *login, const char *authn_request_msg)
{
LassoProvider *remote_provider;
gchar *protocolProfile;
gchar *authnRequestSigned;
gboolean must_verify_signature = FALSE;
gint ret = 0;
LassoLibAuthnRequest *request;
LassoMessageFormat format;
g_return_val_if_fail(LASSO_IS_LOGIN(login), LASSO_PARAM_ERROR_BAD_TYPE_OR_NULL_OBJ);
if (authn_request_msg == NULL) {
format = 0;
if (LASSO_PROFILE(login)->request == NULL) {
return critical_error(LASSO_PROFILE_ERROR_MISSING_REQUEST);
}
/* LibAuthnRequest already set by lasso_login_init_idp_initiated_authn_request() */
request = LASSO_LIB_AUTHN_REQUEST(LASSO_PROFILE(login)->request);
/* verify that NameIDPolicy is 'any' */
if (request->NameIDPolicy == NULL)
return LASSO_LOGIN_ERROR_INVALID_NAMEIDPOLICY;
if (strcmp(request->NameIDPolicy, LASSO_LIB_NAMEID_POLICY_TYPE_ANY) != 0)
return LASSO_LOGIN_ERROR_INVALID_NAMEIDPOLICY;
} else {
request = lasso_lib_authn_request_new();
format = lasso_node_init_from_message(LASSO_NODE(request), authn_request_msg);
if (format == LASSO_MESSAGE_FORMAT_UNKNOWN ||
format == LASSO_MESSAGE_FORMAT_ERROR) {
return critical_error(LASSO_PROFILE_ERROR_INVALID_MSG);
}
LASSO_PROFILE(login)->request = LASSO_SAMLP_REQUEST_ABSTRACT(request);
/* get remote ProviderID */
LASSO_PROFILE(login)->remote_providerID = g_strdup(
LASSO_LIB_AUTHN_REQUEST(LASSO_PROFILE(login)->request)->ProviderID);
}
/* get ProtocolProfile in lib:AuthnRequest */
protocolProfile = LASSO_LIB_AUTHN_REQUEST(LASSO_PROFILE(login)->request)->ProtocolProfile;
if (protocolProfile == NULL ||
strcmp(protocolProfile, LASSO_LIB_PROTOCOL_PROFILE_BRWS_ART) == 0) {
protocolProfile = LASSO_LIB_PROTOCOL_PROFILE_BRWS_ART;
login->protocolProfile = LASSO_LOGIN_PROTOCOL_PROFILE_BRWS_ART;
} else if (strcmp(protocolProfile, LASSO_LIB_PROTOCOL_PROFILE_BRWS_POST) == 0) {
protocolProfile = LASSO_LIB_PROTOCOL_PROFILE_BRWS_POST;
login->protocolProfile = LASSO_LOGIN_PROTOCOL_PROFILE_BRWS_POST;
} else {
return critical_error(LASSO_PROFILE_ERROR_INVALID_PROTOCOLPROFILE);
}
/* check if requested single sign on protocol profile is supported */
LASSO_PROVIDER(LASSO_PROFILE(login)->server)->role = LASSO_PROVIDER_ROLE_IDP;
if (lasso_provider_has_protocol_profile(
LASSO_PROVIDER(LASSO_PROFILE(login)->server),
LASSO_MD_PROTOCOL_TYPE_SINGLE_SIGN_ON,
protocolProfile) == FALSE) {
return critical_error(LASSO_PROFILE_ERROR_UNSUPPORTED_PROFILE);
}
/* Check authnRequest signature. */
if (authn_request_msg != NULL) {
remote_provider = g_hash_table_lookup(LASSO_PROFILE(login)->server->providers,
LASSO_PROFILE(login)->remote_providerID);
if (remote_provider != NULL) {
/* Is authnRequest signed ? */
authnRequestSigned = lasso_provider_get_metadata_one(
remote_provider, "AuthnRequestsSigned");
if (authnRequestSigned != NULL) {
must_verify_signature = strcmp(authnRequestSigned, "true") == 0;
g_free(authnRequestSigned);
} else {
/* missing element in metadata; shouldn't
* happen, assume true */
must_verify_signature = TRUE;
}
} else {
return critical_error(LASSO_SERVER_ERROR_PROVIDER_NOT_FOUND,
LASSO_PROFILE(login)->remote_providerID);
}
/* verify request signature */
if (must_verify_signature) {
ret = lasso_provider_verify_signature(remote_provider,
authn_request_msg, "RequestID", format);
LASSO_PROFILE(login)->signature_status = ret;
}
}
return ret;
}
/**
* lasso_login_process_authn_response_msg:
* @login: a #LassoLogin
* @authn_response_msg: the authentication response received
*
* Processes received authentication response.
*
* Return value: 0 on success; or a negative value otherwise.
**/
gint
lasso_login_process_authn_response_msg(LassoLogin *login, gchar *authn_response_msg)
{
gint ret1 = 0, ret2 = 0;
LassoMessageFormat format;
LassoProvider *remote_provider;
g_return_val_if_fail(LASSO_IS_LOGIN(login), LASSO_PARAM_ERROR_BAD_TYPE_OR_NULL_OBJ);
g_return_val_if_fail(authn_response_msg != NULL, LASSO_PARAM_ERROR_INVALID_VALUE);
/* clean state */
if (LASSO_PROFILE(login)->remote_providerID)
g_free(LASSO_PROFILE(login)->remote_providerID);
if (LASSO_PROFILE(login)->response)
lasso_node_destroy(LASSO_NODE(LASSO_PROFILE(login)->response));
LASSO_PROFILE(login)->response = lasso_lib_authn_response_new(NULL, NULL);
format = lasso_node_init_from_message(
LASSO_NODE(LASSO_PROFILE(login)->response), authn_response_msg);
if (format == LASSO_MESSAGE_FORMAT_UNKNOWN || format == LASSO_MESSAGE_FORMAT_ERROR) {
return critical_error(LASSO_PROFILE_ERROR_INVALID_MSG);
}
LASSO_PROFILE(login)->remote_providerID = g_strdup(
LASSO_LIB_AUTHN_RESPONSE(LASSO_PROFILE(login)->response)->ProviderID);
if (LASSO_PROFILE(login)->remote_providerID == NULL) {
ret1 = critical_error(LASSO_SERVER_ERROR_PROVIDER_NOT_FOUND);
}
remote_provider = g_hash_table_lookup(LASSO_PROFILE(login)->server->providers,
LASSO_PROFILE(login)->remote_providerID);
if (LASSO_IS_PROVIDER(remote_provider) == FALSE)
return critical_error(LASSO_SERVER_ERROR_PROVIDER_NOT_FOUND,
LASSO_PROFILE(login)->remote_providerID);
LASSO_PROFILE(login)->msg_relayState = g_strdup(LASSO_LIB_AUTHN_RESPONSE(
LASSO_PROFILE(login)->response)->RelayState);
LASSO_PROFILE(login)->signature_status = lasso_provider_verify_signature(
remote_provider, authn_response_msg, "ResponseID", format);
ret2 = lasso_login_process_response_status_and_assertion(login);
/* XXX: and what about signature_status ? Shouldn't it return error on
* failure ? */
return ret2 == 0 ? ret1 : ret2;
}
/**
* lasso_login_process_request_msg:
* @login: a #LassoLogin
* @request_msg: the artifact request received
*
* Processes received artifact request.
*
* Return value: 0 on success; or a negative value otherwise.
**/
gint
lasso_login_process_request_msg(LassoLogin *login, gchar *request_msg)
{
gint ret = 0;
LassoProfile *profile = LASSO_PROFILE(login);
g_return_val_if_fail(LASSO_IS_LOGIN(login), LASSO_PARAM_ERROR_BAD_TYPE_OR_NULL_OBJ);
g_return_val_if_fail(request_msg != NULL, LASSO_PARAM_ERROR_INVALID_VALUE);
/* rebuild samlp:Request with request_msg */
profile->request = LASSO_SAMLP_REQUEST_ABSTRACT(lasso_node_new_from_soap(request_msg));
if (profile->request == NULL) {
return critical_error(LASSO_PROFILE_ERROR_INVALID_MSG);
}
/* get AssertionArtifact */
login->assertionArtifact = g_strdup(
LASSO_SAMLP_REQUEST(profile->request)->AssertionArtifact);
/* Keep a copy of request msg so signature can be verified when we get
* the providerId in lasso_login_build_response_msg()
*/
login->private_data->soap_request_msg = g_strdup(request_msg);
return ret;
}
/**
* lasso_login_process_response_msg:
* @login: a #LassoLogin
* @response_msg: the assertion response received
*
* Processes received assertion response.
*
* Return value: 0 on success; or a negative value otherwise.
**/
gint
lasso_login_process_response_msg(LassoLogin *login, gchar *response_msg)
{
g_return_val_if_fail(LASSO_IS_LOGIN(login), LASSO_PARAM_ERROR_BAD_TYPE_OR_NULL_OBJ);
g_return_val_if_fail(response_msg != NULL, LASSO_PARAM_ERROR_INVALID_VALUE);
/* rebuild samlp:Response with response_msg */
LASSO_PROFILE(login)->response = LASSO_SAMLP_RESPONSE_ABSTRACT(
lasso_node_new_from_soap(response_msg));
if (! LASSO_IS_SAMLP_RESPONSE(LASSO_PROFILE(login)->response) ) {
lasso_node_destroy(LASSO_NODE(LASSO_PROFILE(login)->response));
LASSO_PROFILE(login)->response = NULL;
return critical_error(LASSO_PROFILE_ERROR_INVALID_MSG);
}
return lasso_login_process_response_status_and_assertion(login);
}
/*****************************************************************************/
/* private methods */
/*****************************************************************************/
static struct XmlSnippet schema_snippets[] = {
{ "AssertionArtifact", SNIPPET_CONTENT, G_STRUCT_OFFSET(LassoLogin, assertionArtifact) },
{ "NameIDPolicy", SNIPPET_CONTENT, G_STRUCT_OFFSET(LassoLogin, nameIDPolicy) },
{ "Assertion", SNIPPET_NODE_IN_CHILD, G_STRUCT_OFFSET(LassoLogin, assertion) },
{ NULL, 0, 0}
};
static LassoNodeClass *parent_class = NULL;
static xmlNode*
get_xmlNode(LassoNode *node, gboolean lasso_dump)
{
xmlNode *xmlnode;
LassoLogin *login = LASSO_LOGIN(node);
xmlnode = parent_class->get_xmlNode(node, lasso_dump);
xmlSetProp(xmlnode, "LoginDumpVersion", "2");
if (login->protocolProfile == LASSO_LOGIN_PROTOCOL_PROFILE_BRWS_ART)
xmlNewTextChild(xmlnode, NULL, "ProtocolProfile", "Artifact");
if (login->protocolProfile == LASSO_LOGIN_PROTOCOL_PROFILE_BRWS_POST)
xmlNewTextChild(xmlnode, NULL, "ProtocolProfile", "POST");
return xmlnode;
}
static int
init_from_xml(LassoNode *node, xmlNode *xmlnode)
{
LassoLogin *login = LASSO_LOGIN(node);
xmlNode *t;
int rc;
rc = parent_class->init_from_xml(node, xmlnode);
if (rc) return rc;
t = xmlnode->children;
while (t) {
if (t->type != XML_ELEMENT_NODE) {
t = t->next;
continue;
}
if (strcmp(t->name, "ProtocolProfile") == 0) {
char *s;
s = xmlNodeGetContent(t);
if (strcmp(s, "Artifact") == 0)
login->protocolProfile = LASSO_LOGIN_PROTOCOL_PROFILE_BRWS_ART;
if (strcmp(s, "POST") == 0)
login->protocolProfile = LASSO_LOGIN_PROTOCOL_PROFILE_BRWS_POST;
xmlFree(s);
}
t = t->next;
}
return 0;
}
/*****************************************************************************/
/* overridden parent class methods */
/*****************************************************************************/
static void
dispose(GObject *object)
{
LassoLogin *login = LASSO_LOGIN(object);
g_free(login->private_data->soap_request_msg);
login->private_data->soap_request_msg = NULL;
G_OBJECT_CLASS(parent_class)->dispose(object);
}
static void
finalize(GObject *object)
{
LassoLogin *login = LASSO_LOGIN(object);
g_free(login->private_data);
login->private_data = NULL;
G_OBJECT_CLASS(parent_class)->finalize(object);
}
/*****************************************************************************/
/* instance and class init functions */
/*****************************************************************************/
static void
instance_init(LassoLogin *login)
{
login->private_data = g_new(LassoLoginPrivate, 1);
login->private_data->soap_request_msg = NULL;
login->protocolProfile = 0;
login->assertionArtifact = NULL;
login->nameIDPolicy = NULL;
login->http_method = 0;
}
static void
class_init(LassoLoginClass *klass)
{
LassoNodeClass *nclass = LASSO_NODE_CLASS(klass);
parent_class = g_type_class_peek_parent(klass);
nclass->get_xmlNode = get_xmlNode;
nclass->init_from_xml = init_from_xml;
nclass->node_data = g_new0(LassoNodeClassData, 1);
lasso_node_class_set_nodename(nclass, "Login");
lasso_node_class_add_snippets(nclass, schema_snippets);
G_OBJECT_CLASS(klass)->dispose = dispose;
G_OBJECT_CLASS(klass)->finalize = finalize;
}
GType
lasso_login_get_type()
{
static GType this_type = 0;
if (!this_type) {
static const GTypeInfo this_info = {
sizeof(LassoLoginClass),
NULL,
NULL,
(GClassInitFunc) class_init,
NULL,
NULL,
sizeof(LassoLogin),
0,
(GInstanceInitFunc) instance_init,
};
this_type = g_type_register_static(LASSO_TYPE_PROFILE,
"LassoLogin", &this_info, 0);
}
return this_type;
}
/**
* lasso_login_new
* @server: the #LassoServer
*
* Creates a new #LassoLogin.
*
* Return value: a newly created #LassoLogin object; or NULL if an error
* occured
**/
LassoLogin*
lasso_login_new(LassoServer *server)
{
LassoLogin *login = NULL;
g_return_val_if_fail(LASSO_IS_SERVER(server), NULL);
login = g_object_new(LASSO_TYPE_LOGIN, NULL);
LASSO_PROFILE(login)->server = g_object_ref(server);
return login;
}
/**
* lasso_login_new_from_dump:
* @server: the #LassoServer
* @dump: XML login dump
*
* Restores the @dump to a new #LassoLogin.
*
* Return value: a newly created #LassoLogin; or NULL if an error occured.
**/
LassoLogin*
lasso_login_new_from_dump(LassoServer *server, const gchar *dump)
{
LassoLogin *login;
xmlDoc *doc;
login = g_object_new(LASSO_TYPE_LOGIN, NULL);
doc = xmlParseMemory(dump, strlen(dump));
init_from_xml(LASSO_NODE(login), xmlDocGetRootElement(doc));
LASSO_PROFILE(login)->server = g_object_ref(server);
return login;
}
/**
* lasso_login_dump:
* @login: a #LassoLogin
*
* Dumps @login content to an XML string.
*
* Return value: the dump string. It must be freed by the caller.
**/
gchar*
lasso_login_dump(LassoLogin *login)
{
return lasso_node_dump(LASSO_NODE(login));
}
/**
* lasso_login_validate_request_msg:
* @login: a #LassoLogin
* @authentication_result: whether user has authenticated succesfully
* @is_consent_obtained: whether user consent has been obtained
*
* Initializes a response to the authentication request received.
*
* Return value: 0 on success; or a negative value otherwise.
**/
int
lasso_login_validate_request_msg(LassoLogin *login, gboolean authentication_result,
gboolean is_consent_obtained)
{
LassoProfile *profile;
gint ret = 0;
g_return_val_if_fail(LASSO_IS_LOGIN(login), LASSO_PARAM_ERROR_BAD_TYPE_OR_NULL_OBJ);
profile = LASSO_PROFILE(login);
/* create LibAuthnResponse */
profile->response = lasso_lib_authn_response_new(
LASSO_PROVIDER(profile->server)->ProviderID,
LASSO_LIB_AUTHN_REQUEST(profile->request));
/* modify AuthnResponse StatusCode if user authentication is not OK */
if (authentication_result == FALSE) {
lasso_profile_set_response_status(profile,
LASSO_LIB_STATUS_CODE_UNKNOWN_PRINCIPAL);
return LASSO_LOGIN_ERROR_REQUEST_DENIED;
}
/* if signature is not OK => modify AuthnResponse StatusCode */
if (profile->signature_status == LASSO_DS_ERROR_INVALID_SIGNATURE) {
lasso_profile_set_response_status(profile,
LASSO_LIB_STATUS_CODE_INVALID_SIGNATURE);
return LASSO_LOGIN_ERROR_INVALID_SIGNATURE;
}
if (profile->signature_status == LASSO_DS_ERROR_SIGNATURE_NOT_FOUND) {
/* Unsigned AuthnRequest */
lasso_profile_set_response_status(profile,
LASSO_LIB_STATUS_CODE_UNSIGNED_AUTHN_REQUEST);
return LASSO_LOGIN_ERROR_UNSIGNED_AUTHN_REQUEST;
}
if (profile->signature_status == 0 && authentication_result == TRUE) {
/* process federation */
ret = lasso_login_process_federation(login, is_consent_obtained);
if (ret < 0)
return ret;
}
lasso_profile_set_response_status(profile, LASSO_SAML_STATUS_CODE_SUCCESS);
return ret;
}
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