374 lines
9.2 KiB
C
374 lines
9.2 KiB
C
/*
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* Copyright (C) 2015 Andreas Steffen
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* HSR Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#include "imv_hcd_state.h"
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#include "imv/imv_lang_string.h"
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#include "imv/imv_reason_string.h"
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#include <tncif_policy.h>
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#include <utils/debug.h>
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typedef struct private_imv_hcd_state_t private_imv_hcd_state_t;
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typedef struct subtype_action_flags_t subtype_action_flags_t;
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struct subtype_action_flags_t {
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pa_subtype_pwg_t subtype;
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uint32_t action_flags;
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};
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/**
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* Private data of an imv_hcd_state_t object.
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*/
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struct private_imv_hcd_state_t {
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/**
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* Public members of imv_hcd_state_t
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*/
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imv_hcd_state_t public;
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/**
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* TNCCS connection ID
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*/
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TNC_ConnectionID connection_id;
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/**
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* TNCCS connection state
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*/
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TNC_ConnectionState state;
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/**
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* Does the TNCCS connection support long message types?
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*/
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bool has_long;
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/**
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* Does the TNCCS connection support exclusive delivery?
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*/
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bool has_excl;
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/**
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* Maximum PA-TNC message size for this TNCCS connection
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*/
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uint32_t max_msg_len;
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/**
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* Current flags set for completed actions
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*/
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uint32_t *action_flags;
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/**
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* Action flags for all PA subtypes
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*/
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subtype_action_flags_t subtype_action_flags[6];
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/**
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* IMV database session associated with TNCCS connection
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*/
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imv_session_t *session;
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/**
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* PA-TNC attribute segmentation contracts associated with TNCCS connection
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*/
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seg_contract_manager_t *contracts;
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/**
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* IMV action recommendation
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*/
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TNC_IMV_Action_Recommendation rec;
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/**
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* IMV evaluation result
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*/
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TNC_IMV_Evaluation_Result eval;
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/**
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* IMV OS handshake state
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*/
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imv_hcd_handshake_state_t handshake_state;
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/**
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* TNC Reason String
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*/
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imv_reason_string_t *reason_string;
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};
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/**
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* Supported languages
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*/
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static char* languages[] = { "en", "de", "fr", "pl" };
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/**
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* Reason strings for "Port Filter"
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*/
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static imv_lang_string_t reasons[] = {
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{ "en", "Mandatory HCD attributes are missing" },
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{ "de", "Obligatorische HCD Attribute fehlen" },
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{ "fr", "Il manque des attributes HCD obligatoires" },
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{ "pl", "Brakuje atrybutów obowiązkowych" },
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{ NULL, NULL }
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};
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METHOD(imv_state_t, get_connection_id, TNC_ConnectionID,
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private_imv_hcd_state_t *this)
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{
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return this->connection_id;
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}
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METHOD(imv_state_t, has_long, bool,
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private_imv_hcd_state_t *this)
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{
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return this->has_long;
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}
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METHOD(imv_state_t, has_excl, bool,
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private_imv_hcd_state_t *this)
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{
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return this->has_excl;
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}
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METHOD(imv_state_t, set_flags, void,
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private_imv_hcd_state_t *this, bool has_long, bool has_excl)
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{
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this->has_long = has_long;
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this->has_excl = has_excl;
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}
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METHOD(imv_state_t, set_max_msg_len, void,
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private_imv_hcd_state_t *this, uint32_t max_msg_len)
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{
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this->max_msg_len = max_msg_len;
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}
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METHOD(imv_state_t, get_max_msg_len, uint32_t,
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private_imv_hcd_state_t *this)
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{
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return this->max_msg_len;
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}
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METHOD(imv_state_t, set_action_flags, void,
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private_imv_hcd_state_t *this, uint32_t flags)
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{
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*this->action_flags |= flags;
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}
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METHOD(imv_state_t, get_action_flags, uint32_t,
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private_imv_hcd_state_t *this)
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{
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return *this->action_flags;
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}
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METHOD(imv_state_t, set_session, void,
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private_imv_hcd_state_t *this, imv_session_t *session)
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{
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this->session = session;
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}
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METHOD(imv_state_t, get_session, imv_session_t*,
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private_imv_hcd_state_t *this)
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{
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return this->session;
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}
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METHOD(imv_state_t, get_contracts, seg_contract_manager_t*,
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private_imv_hcd_state_t *this)
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{
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return this->contracts;
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}
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METHOD(imv_state_t, get_recommendation, void,
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private_imv_hcd_state_t *this, TNC_IMV_Action_Recommendation *rec,
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TNC_IMV_Evaluation_Result *eval)
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{
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*rec = this->rec;
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*eval = this->eval;
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}
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METHOD(imv_state_t, set_recommendation, void,
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private_imv_hcd_state_t *this, TNC_IMV_Action_Recommendation rec,
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TNC_IMV_Evaluation_Result eval)
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{
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this->rec = rec;
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this->eval = eval;
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}
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METHOD(imv_state_t, update_recommendation, void,
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private_imv_hcd_state_t *this, TNC_IMV_Action_Recommendation rec,
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TNC_IMV_Evaluation_Result eval)
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{
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this->rec = tncif_policy_update_recommendation(this->rec, rec);
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this->eval = tncif_policy_update_evaluation(this->eval, eval);
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}
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METHOD(imv_state_t, change_state, TNC_ConnectionState,
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private_imv_hcd_state_t *this, TNC_ConnectionState new_state)
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{
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TNC_ConnectionState old_state;
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old_state = this->state;
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this->state = new_state;
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return old_state;
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}
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METHOD(imv_state_t, get_reason_string, bool,
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private_imv_hcd_state_t *this, enumerator_t *language_enumerator,
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chunk_t *reason_string, char **reason_language)
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{
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if (this->rec == TNC_IMV_ACTION_RECOMMENDATION_NO_RECOMMENDATION)
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{
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return FALSE;
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}
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*reason_language = imv_lang_string_select_lang(language_enumerator,
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languages, countof(languages));
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/* Instantiate a TNC Reason String object */
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DESTROY_IF(this->reason_string);
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this->reason_string = imv_reason_string_create(*reason_language, "\n");
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this->reason_string->add_reason(this->reason_string, reasons);
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*reason_string = this->reason_string->get_encoding(this->reason_string);
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return TRUE;
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}
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METHOD(imv_state_t, get_remediation_instructions, bool,
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private_imv_hcd_state_t *this, enumerator_t *language_enumerator,
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chunk_t *string, char **lang_code, char **uri)
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{
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return FALSE;
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}
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METHOD(imv_state_t, reset, void,
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private_imv_hcd_state_t *this)
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{
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DESTROY_IF(this->reason_string);
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this->reason_string = NULL;
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this->rec = TNC_IMV_ACTION_RECOMMENDATION_NO_RECOMMENDATION;
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this->eval = TNC_IMV_EVALUATION_RESULT_DONT_KNOW;
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this->handshake_state = IMV_HCD_STATE_INIT;
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this->subtype_action_flags[0].action_flags = IMV_HCD_ATTR_NONE;
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this->subtype_action_flags[1].action_flags = IMV_HCD_ATTR_SYSTEM_ONLY;
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this->subtype_action_flags[2].action_flags = IMV_HCD_ATTR_SYSTEM_ONLY;
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this->subtype_action_flags[3].action_flags = IMV_HCD_ATTR_SYSTEM_ONLY;
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this->subtype_action_flags[4].action_flags = IMV_HCD_ATTR_SYSTEM_ONLY;
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this->subtype_action_flags[5].action_flags = IMV_HCD_ATTR_SYSTEM_ONLY;
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this->action_flags = &this->subtype_action_flags[0].action_flags;
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}
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METHOD(imv_state_t, destroy, void,
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private_imv_hcd_state_t *this)
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{
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DESTROY_IF(this->session);
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DESTROY_IF(this->reason_string);
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this->contracts->destroy(this->contracts);
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free(this);
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}
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METHOD(imv_hcd_state_t, set_handshake_state, void,
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private_imv_hcd_state_t *this, imv_hcd_handshake_state_t new_state)
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{
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this->handshake_state = new_state;
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}
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METHOD(imv_hcd_state_t, get_handshake_state, imv_hcd_handshake_state_t,
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private_imv_hcd_state_t *this)
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{
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return this->handshake_state;
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}
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METHOD(imv_hcd_state_t, set_subtype, void,
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private_imv_hcd_state_t *this, pa_subtype_pwg_t subtype)
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{
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int i;
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for (i = 0; i < countof(this->subtype_action_flags); i++)
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{
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if (subtype == this->subtype_action_flags[i].subtype)
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{
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this->action_flags = &this->subtype_action_flags[i].action_flags;
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break;
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}
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}
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}
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METHOD(imv_hcd_state_t, set_user_app_disabled, void,
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private_imv_hcd_state_t *this)
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{
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int i;
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for (i = 0; i < countof(this->subtype_action_flags); i++)
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{
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this->subtype_action_flags[i].action_flags |= IMV_HCD_ATTR_USER_APP_NAME;
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}
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}
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/**
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* Described in header.
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*/
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imv_state_t *imv_hcd_state_create(TNC_ConnectionID connection_id)
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{
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private_imv_hcd_state_t *this;
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INIT(this,
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.public = {
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.interface = {
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.get_connection_id = _get_connection_id,
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.has_long = _has_long,
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.has_excl = _has_excl,
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.set_flags = _set_flags,
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.set_max_msg_len = _set_max_msg_len,
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.get_max_msg_len = _get_max_msg_len,
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.set_action_flags = _set_action_flags,
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.get_action_flags = _get_action_flags,
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.set_session = _set_session,
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.get_session = _get_session,
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.get_contracts = _get_contracts,
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.change_state = _change_state,
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.get_recommendation = _get_recommendation,
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.set_recommendation = _set_recommendation,
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.update_recommendation = _update_recommendation,
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.get_reason_string = _get_reason_string,
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.get_remediation_instructions = _get_remediation_instructions,
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.reset = _reset,
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.destroy = _destroy,
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},
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.set_handshake_state = _set_handshake_state,
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.get_handshake_state = _get_handshake_state,
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.set_subtype = _set_subtype,
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.set_user_app_disabled = _set_user_app_disabled,
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},
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.state = TNC_CONNECTION_STATE_CREATE,
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.rec = TNC_IMV_ACTION_RECOMMENDATION_NO_RECOMMENDATION,
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.eval = TNC_IMV_EVALUATION_RESULT_DONT_KNOW,
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.connection_id = connection_id,
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.contracts = seg_contract_manager_create(),
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.subtype_action_flags = {
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{ PA_SUBTYPE_PWG_HCD_SYSTEM, IMV_HCD_ATTR_NONE },
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{ PA_SUBTYPE_PWG_HCD_CONSOLE, IMV_HCD_ATTR_SYSTEM_ONLY },
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{ PA_SUBTYPE_PWG_HCD_MARKER, IMV_HCD_ATTR_SYSTEM_ONLY },
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{ PA_SUBTYPE_PWG_HCD_FINISHER, IMV_HCD_ATTR_SYSTEM_ONLY },
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{ PA_SUBTYPE_PWG_HCD_INTERFACE, IMV_HCD_ATTR_SYSTEM_ONLY },
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{ PA_SUBTYPE_PWG_HCD_SCANNER, IMV_HCD_ATTR_SYSTEM_ONLY },
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}
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);
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this->action_flags = &this->subtype_action_flags[0].action_flags;
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return &this->public.interface;
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}
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