Examples with ContractSpec verdict.vdm.vdm_lustre.ContractSpec used on opensource projects

Example 1 with ContractSpec

use of verdict.vdm.vdm_lustre.ContractSpec in project VERDICT by ge-high-assurance.

the class VDMInstrumentor method dec_var_asmp_const.

/*
     * Declare and Define weak assumptions for the blame assignment.
     */
protected void dec_var_asmp_const(Map<String, List<String>> connection_comp_map, boolean blame_assignment, boolean link_level) {
    Set<String> vars = connection_comp_map.keySet();
    List<SymbolDefinition> vars_dec = new ArrayList<SymbolDefinition>();
    // String default_var = null;
    Set<String> var_links = new HashSet<String>();
    for (String var : vars) {
        // Declaration global variables for instrumented links.
        List<String> connections = connection_comp_map.get(var);
        String id = var.replace("::", "_double_colon_");
        SymbolDefinition var_dec = add_vars_assume(id, connections);
        if (!connections.isEmpty()) {
            vars_dec.add(var_dec);
            var_links.addAll(connections);
        }
    }
    String[] vars_assumption = new String[vars.size()];
    vars_assumption = vars.toArray(vars_assumption);
    Expression assume_expr = null;
    if (link_level) {
        String[] links = new String[var_links.size()];
        links = var_links.toArray(links);
        assume_expr = add_assume_amo(links);
    } else {
        assume_expr = add_assume_amo(vars_assumption);
    }
    // Adding Xor assumption for components.
    ComponentImpl compImpl = retrieve_main_cmp_impl();
    if (compImpl != null) {
        if (compImpl.getBlockImpl() == null) {
            compImpl = retrieve_block_impl(compImpl);
        }
        ContractSpec contractSpec = compImpl.getType().getContract();
        ContractItem assume_item = new ContractItem();
        if (assume_expr != null) {
            assume_item.setExpression(assume_expr);
            contractSpec.getAssume().add(assume_item);
        }
        if (blame_assignment == false && contractSpec != null) {
            contractSpec.getSymbol().addAll(vars_dec);
        }
    }
}

Example 2 with ContractSpec

use of verdict.vdm.vdm_lustre.ContractSpec in project VERDICT by ge-high-assurance.

the class VDMInstrumentor method instrument_link.

// public void instrument_link(Connection connection) {
// // Connection Source
// ConnectionEnd src = connection.getSource();
// 
// // Connection Destination
// ConnectionEnd dest = connection.getDestination();
// 
// // Source Component
// Port src_port = src.getComponentPort();
// // Destination Component
// Port dest_port = dest.getComponentPort();
// 
// if (src_port == null && dest_port == null) {
// // Both are sub-compon
// System.out.println("Both are subcomponents.");
// }
// if (src_port == null && dest_port != null) {
// // Only one is Subcomponent
// System.out.println(dest_port.getId() + " -- " + dest_port.getName());
// }
// if (src_port != null && dest_port == null) {
// // One Subcomponent
// System.out.println(src_port.getId() + " -- " + src_port.getName());
// }
// }
// public void create_link(Connection old_channel, ComponentInstance
// src_componentInstance,
// ComponentInstance dest_componentInstance) {
// 
// ComponentInstance instrumented_componentInstance = new ComponentInstance();
// 
// String component_ID = src_componentInstance.getName() + "_Inst_" +
// dest_componentInstance.getName();
// instrumented_componentInstance.setId(component_ID + "_Instance");
// instrumented_componentInstance.setName(component_ID);
// 
// instrumented_componentInstance.setSpecification(value);
// instrumented_componentInstance.setImplementation(value);
// 
// ComponentType instrumented_component = new ComponentType();
// instrumented_component.setId(component_ID);
// instrumented_component.setName(component_ID);
// 
// 
// 
// Connection inst_channel = new Connection();
// 
// //Update Old connection Destination
// old_channel.setDestination(value);
// 
// //Add New Connection Source
// inst_channel.setSource(value);
// //Add New Connection Destination
// inst_channel.setDestination(value);
// 
// 
// }
public String instrument_link(String compID, Connection connection, BlockImpl blockImpl) {
    // instrument_link(connection);
    // System.out.println("Instrumented Link ***" + connection.getName());
    // Default Block Implementation
    ComponentImpl compImpl = null;
    if (compID != null) {
        compImpl = retrieve_cmp_impl(compID);
    }
    // Connections without Components Instrumentation.
    if (compImpl == null) {
        compImpl = retrieve_main_cmp_impl();
    }
    ComponentType instrumented_cmp = new ComponentType();
    // R.H.S
    ConnectionEnd src = connection.getSource();
    ComponentInstance src_componentInstance = new ComponentInstance();
    // Source Connection
    Port src_port = src.getComponentPort();
    if (src_port != null) {
        String identifier = compImpl.getId();
        // identifier = identifier.replace(".I", "_I");
        identifier = identifier.replace(".", "_dot_");
        identifier = identifier.replace("::", "_double_colon_");
        src_componentInstance.setId(identifier);
        src_componentInstance.setName(identifier);
        src_componentInstance.setImplementation(compImpl);
    }
    // if (src_port == instrumented_port) {
    CompInstancePort compInstancePort = src.getSubcomponentPort();
    if (compInstancePort != null) {
        src_componentInstance = compInstancePort.getSubcomponent();
        src_port = compInstancePort.getPort();
    }
    // R.H.S
    ConnectionEnd dest = connection.getDestination();
    ComponentInstance dest_componentInstance = new ComponentInstance();
    // Source Connection
    Port dest_port = dest.getComponentPort();
    if (dest_port != null) {
        String identifier = compImpl.getId();
        // identifier = identifier.replace(".I", "_I");
        identifier = identifier.replace(".", "_dot_");
        identifier = identifier.replace("::", "_double_colon_");
        dest_componentInstance.setId(identifier);
        dest_componentInstance.setName(identifier);
        dest_componentInstance.setImplementation(compImpl);
    }
    // if (dest_port == instrumented_port) {
    compInstancePort = dest.getSubcomponentPort();
    if (compInstancePort != null) {
        dest_componentInstance = compInstancePort.getSubcomponent();
        dest_port = compInstancePort.getPort();
    }
    String instrument_cmp_Id = src_componentInstance.getName() + "_Inst_" + dest_componentInstance.getName() + "_port_" + dest_port.getName();
    instrument_cmp_Id = instrument_cmp_Id.replace(".", "_dot_");
    // Setting Component IDs
    instrumented_cmp.setId(instrument_cmp_Id);
    instrumented_cmp.setName(instrument_cmp_Id);
    // output port
    Port instrumented_port_dest = new Port();
    instrumented_port_dest.setId(dest_port.getId());
    instrumented_port_dest.setName(dest_port.getName());
    instrumented_port_dest.setMode(dest_port.getMode());
    instrumented_port_dest.setType(dest_port.getType());
    if (dest_port.isEvent() != null && dest_port.isEvent()) {
        instrumented_port_dest.setEvent(true);
    } else {
        instrumented_port_dest.setEvent(false);
    }
    instrumented_cmp.getPort().add(instrumented_port_dest);
    // Input port
    Port instrumented_port_src = new Port();
    instrumented_port_src.setId(src_port.getId());
    instrumented_port_src.setName(src_componentInstance + "_port_" + src_port.getName());
    instrumented_port_src.setMode(src_port.getMode());
    if (src_port.isEvent() != null && src_port.isEvent()) {
        instrumented_port_src.setEvent(true);
    } else {
        instrumented_port_src.setEvent(false);
    }
    String global_constant_Id = src_componentInstance.getName();
    if (instrumented_port_src.getMode() == instrumented_port_dest.getMode()) {
        instrumented_port_src.setName(src_port.getName());
        if (instrumented_port_src.getMode() == PortMode.IN) {
            instrumented_port_src.setMode(PortMode.OUT);
        } else {
            instrumented_port_dest.setMode(PortMode.IN);
        }
    } else {
        instrumented_port_src.setName(src_port.getName());
    }
    if (dest_port.getMode() == PortMode.OUT) {
        global_constant_Id += "_port_" + dest_port.getName() + "_instrumented";
    } else {
        global_constant_Id += "_port_" + src_port.getName() + "_instrumented";
    }
    instrumented_port_src.setType(dest_port.getType());
    instrumented_cmp.getPort().add(instrumented_port_src);
    vdm_model.getComponentType().add(instrumented_cmp);
    // Modify connection.
    ConnectionEnd con_end_inst = new ConnectionEnd();
    // instrumentd_port.setPort(value);
    ComponentInstance instrumented_compInstance = new ComponentInstance();
    instrumented_compInstance.setId(connection.getName());
    instrumented_compInstance.setName(connection.getName());
    instrumented_compInstance.setSpecification(instrumented_cmp);
    // -----------------------------------------
    // Adding Auxiliary Node.
    NodeCall nodeCall = new NodeCall();
    nodeCall.setNodeId(instrumented_cmp.getId());
    Expression callExpr = new Expression();
    callExpr.setCall(nodeCall);
    ContractItem true_guarantee_item = new ContractItem();
    // true_guarantee_item.setName("true");
    Expression true_expr = new Expression();
    Boolean true_lit = Boolean.TRUE;
    true_expr.setBoolLiteral(true_lit);
    true_guarantee_item.setExpression(true_expr);
    ContractSpec contractSpec = new ContractSpec();
    contractSpec.getGuarantee().add(true_guarantee_item);
    // ---------------------------------------------
    ComponentImpl instrument_compImpl = new ComponentImpl();
    instrument_compImpl.setId(instrumented_cmp.getId() + "_dot_impl");
    instrument_compImpl.setName(instrumented_cmp.getName() + "_dot_Impl");
    instrument_compImpl.setType(instrumented_cmp);
    IfThenElse ifelse = new IfThenElse();
    // Condition
    Expression cond_expr = new Expression();
    global_constant_Id = global_constant_Id.replace(".", "_dot_");
    cond_expr.setIdentifier(global_constant_Id);
    ifelse.setCondition(cond_expr);
    // Then
    Expression then_arg = new Expression();
    then_arg.setIdentifier(dest_port.getName());
    ifelse.setThenBranch(callExpr);
    // Else
    Expression else_arg = new Expression();
    else_arg.setIdentifier(dest_port.getName());
    nodeCall.getArgument().add(else_arg);
    ifelse.setElseBranch(then_arg);
    Expression instrumented_expr = new Expression();
    instrumented_expr.setConditionalExpression(ifelse);
    NodeEquation n_eq = new NodeEquation();
    NodeEquationLHS neq_lhs = new NodeEquationLHS();
    neq_lhs.getIdentifier().add(src_port.getName() + "_instrumented");
    n_eq.setLhs(neq_lhs);
    n_eq.setRhs(instrumented_expr);
    NodeBody nodeBody = new NodeBody();
    // VariableDeclaration cond_var = new VariableDeclaration();
    // cond_var.setName(gloabal_constant_Id);
    // DataType dataType = new DataType();
    // dataType.setPlainType(PlainType.BOOL);
    // cond_var.setDataType(dataType);
    // nodeBody.getVariableDeclaration().add(cond_var);
    nodeBody.setIsMain(false);
    nodeBody.getEquation().add(n_eq);
    instrument_compImpl.setDataflowImpl(nodeBody);
    instrumented_compInstance.setImplementation(instrument_compImpl);
    vdm_model.getComponentImpl().add(instrument_compImpl);
    vdm_model.getComponentType().add(instrumented_cmp);
    // -----------------------------------------
    CompInstancePort compInstance_inst_port = new CompInstancePort();
    compInstance_inst_port.setPort(dest_port);
    compInstance_inst_port.setSubcomponent(instrumented_compInstance);
    con_end_inst.setSubcomponentPort(compInstance_inst_port);
    blockImpl.getSubcomponent().add(instrumented_compInstance);
    connection.setDestination(con_end_inst);
    Connection new_con = new Connection();
    // Copying connection related artifacts
    new_con.setName(connection.getName() + "_instrumented_channel");
    // new_con.setConnType(connection.getConnType());
    // new_con.setFlowType(connection.getFlowType());
    // 
    // new_con.setDataEncrypted(connection.isEncryptedTransmission());
    // new_con.setAuthenticated(connection.isAuthenticated());
    new_con.setSource(con_end_inst);
    compInstance_inst_port.setPort(src_port);
    new_con.setDestination(dest);
    blockImpl.getConnection().add(new_con);
    return global_constant_Id;
}

Example 3 with ContractSpec

use of verdict.vdm.vdm_lustre.ContractSpec in project VERDICT by ge-high-assurance.

the class VDMInstrumentor method retrieve_component_and_channels.

protected void retrieve_component_and_channels(Model vdm_model, List<String> threats, boolean blame_assignment, boolean component_level) {
    HashSet<ComponentType> vdm_components = new HashSet<ComponentType>();
    HashSet<Connection> vdm_links = new HashSet<Connection>();
    // Initialize Components with Empty Ports and Ignore
    identifyEmptyOutputComponents();
    // Initialize DataFlow for empty Implementations.
    LustreProgram lt = vdm_model.getDataflowCode();
    if (lt == null) {
        lt = new LustreProgram();
        vdm_model.setDataflowCode(lt);
    }
    if (threats.contains("LS")) {
        System.out.println("Location Spoofing Instrumentation");
        locationSpoofing(vdm_components);
    }
    if (threats.contains("LB")) {
        System.out.println("Logic Bomb Instrumentation");
        logicBomb(vdm_components);
    }
    if (threats.contains("SV")) {
        System.out.println("Software Virus/malware/worm/trojan");
        softwareVirus(vdm_components);
    }
    if (threats.contains("RI")) {
        System.out.println("Remote Code Injection");
        remoteCodeInjection(vdm_components);
    }
    if (threats.contains("OT")) {
        System.out.println("Outsider Threat");
        outsiderThreat(vdm_components);
    }
    if (threats.contains("IT")) {
        System.out.println("Insider Threat");
        insiderThreat(vdm_components);
    }
    if (threats.contains("HT")) {
        System.out.println("Hardware Trojans");
        hardwareTrojan(vdm_components);
    }
    if (threats.contains("NI")) {
        System.out.println("Network Injection Instrumentation");
        // Snooze links for component level blame assignment.
        if (!component_level) {
            networkInjection(vdm_links);
        }
    }
    if (threats.contains("BN")) {
        System.out.println("Benign");
        vdm_components.clear();
        vdm_links.clear();
    }
    // int component_index = 1;
    // Removed Once component Implemtation assumption.
    ComponentImpl componentImpl = retrieve_main_cmp_impl();
    BlockImpl blockImpl = null;
    if (componentImpl != null) {
        blockImpl = componentImpl.getBlockImpl();
    }
    Map<String, HashSet<Connection>> components_map = new HashMap<String, HashSet<Connection>>();
    if (vdm_components.size() > 0) {
        for (ComponentType component : vdm_components) {
            blockImpl = retrieve_block(component);
            HashSet<Connection> vdm_cmp_links = instrument_component(component, blockImpl);
            for (Connection link_con : vdm_cmp_links) {
                // Check if connection contains Empty Component on Port Ends.
                if (!ignoreMarkedLink(link_con)) {
                    // Check if Port is Probe Port
                    if (!isProbePort(link_con)) {
                        vdm_links.add(link_con);
                    }
                }
            }
            components_map.put(component.getId(), vdm_cmp_links);
        }
    }
    // Snoorzing probe ports and Empty output components
    if (vdm_links.size() > 0) {
        Iterator<Connection> it = vdm_links.iterator();
        while (it.hasNext()) {
            Connection con = it.next();
            if (isProbePort(con)) {
                it.remove();
            } else if (ignoreMarkedLink(con)) {
                it.remove();
            }
        }
    }
    HashSet<String> global_constants = new HashSet<String>();
    Map<Connection, String> connections_map = new HashMap<Connection, String>();
    if (vdm_links.size() > 0) {
        for (Connection connection : vdm_links) {
            // System.out.println("(" + connection_index++ + ") " +
            // connection.getName());
            // instrument_link(connection, blockImpl);
            String cmpID = getComponentID(components_map, connection);
            if (cmpID != null) {
                // Find Block based on Connection
                blockImpl = getBlockID(cmpID);
                String constant = instrument_link(cmpID, connection, blockImpl);
                global_constants.add(constant);
                connections_map.put(connection, constant);
            } else {
                // Handle 'NI' as Special Case.
                ConnectionEnd conDest = connection.getSource();
                Port dest_port = conDest.getComponentPort();
                if (dest_port != null) {
                    cmpID = dest_port.getId();
                } else {
                    CompInstancePort compInstance = conDest.getSubcomponentPort();
                    ComponentInstance compInst = compInstance.getSubcomponent();
                    cmpID = compInst.getId();
                }
                blockImpl = retrieve_block(connection);
                String constant = instrument_link(cmpID, connection, blockImpl);
                global_constants.add(constant);
                connections_map.put(connection, constant);
            }
        }
    } else {
        emptySelection = true;
    }
    // Declare Global Constants
    for (String comp_id : global_constants) {
        ConstantDeclaration global_comp_const = new ConstantDeclaration();
        DataType global_comp_dataType = new DataType();
        global_comp_dataType.setPlainType(PlainType.BOOL);
        global_comp_const.setName(comp_id);
        global_comp_const.setDataType(global_comp_dataType);
        // Expression global_expr = new Expression();
        // global_expr.setBoolLiteral(true);
        // global_comp_const.setDefinition(global_expr);
        vdm_model.getDataflowCode().getConstantDeclaration().add(global_comp_const);
    // g_constants.add(global_comp_const);
    }
    Map<String, List<String>> connection_gps_comp_map = connection_gps_mapper(connections_map, components_map);
    // Choosing Blame options
    if (threats.contains("LS") && component_level) {
        // Link Level Instrumentation varibales
        dec_var_asmp_const(connection_gps_comp_map, blame_assignment, false);
    } else if (threats.contains("LS") && !component_level) {
        dec_var_asmp_const(connection_gps_comp_map, blame_assignment, true);
    }
    if (blame_assignment && component_level) {
        Map<String, List<String>> connection_comp_map = connection_mapper(connections_map, components_map);
        ComponentImpl compImpl = retrieve_main_cmp_impl();
        // if (compImpl.getBlockImpl() == null) {
        // compImpl = retrieve_block(compImpl);
        // }
        ContractSpec contractSpec = compImpl.getType().getContract();
        for (String key : components_map.keySet()) {
            String id = key.replace("::", "_double_colon_");
            Expression wk_expr = new Expression();
            wk_expr.setIdentifier(id);
            Expression not_wkexpr = new Expression();
            not_wkexpr.setNot(wk_expr);
            // Adding weakly assume variables
            ContractItem weakly_assume_item = new ContractItem();
            weakly_assume_item.setName(id + " is not instrumented");
            weakly_assume_item.setExpression(not_wkexpr);
            // Checking connection before adding assumption
            HashSet<Connection> empty_connection_check = components_map.get(key);
            if (empty_connection_check.size() > 0) {
                contractSpec.getWeaklyassume().add(weakly_assume_item);
            }
        }
        dec_var_const(connection_comp_map);
    } else if (blame_assignment && !component_level) {
        ComponentImpl compImpl = retrieve_main_cmp_impl();
        if (compImpl != null) {
            // if (compImpl.getBlockImpl() == null) {
            // compImpl = retrieve_block_impl(compImpl);
            // }
            ContractSpec contractSpec = compImpl.getType().getContract();
            for (String key : global_constants) {
                Expression wk_expr = new Expression();
                wk_expr.setIdentifier(key);
                Expression not_wkexpr = new Expression();
                not_wkexpr.setNot(wk_expr);
                // Adding weakly assume variables
                ContractItem weakly_assume_item = new ContractItem();
                weakly_assume_item.setName(link_name(key) + " is not instrumented");
                weakly_assume_item.setExpression(not_wkexpr);
                contractSpec.getWeaklyassume().add(weakly_assume_item);
            }
        }
    }
}

Example 4 with ContractSpec

use of verdict.vdm.vdm_lustre.ContractSpec in project VERDICT by ge-high-assurance.

the class VerdictLustreListener method exitInlineContract.

/**
 * Extract an inline contract spec.
 */
@Override
public void exitInlineContract(LustreParser.InlineContractContext ctx) {
    ctx.spec = new ContractSpec();
    ctx.symbol().forEach(symbol -> ctx.spec.getSymbol().add(symbol.def));
    ctx.assume().forEach(assume -> ctx.spec.getAssume().add(assume.item));
    ctx.guarantee().forEach(guarantee -> ctx.spec.getGuarantee().add(guarantee.item));
    ctx.contractMode().forEach(contractMode -> ctx.spec.getMode().add(contractMode.mode));
    ctx.contractImport().forEach(contractImport -> ctx.spec.getImport().add(contractImport.imprt));
}

Example 5 with ContractSpec

use of verdict.vdm.vdm_lustre.ContractSpec in project VERDICT by ge-high-assurance.

the class VDMInstrumentor method dec_var_const.

protected void dec_var_const(Map<String, List<String>> connection_comp_map) {
    Set<String> vars = connection_comp_map.keySet();
    List<SymbolDefinition> vars_dec = new ArrayList<SymbolDefinition>();
    for (String var : vars) {
        // Declaration global variables for instrumented links.
        List<String> connections = connection_comp_map.get(var);
        String id = var.replace("::", "_double_colon_");
        SymbolDefinition var_dec = add_vars_assume(id, connections);
        vars_dec.add(var_dec);
    }
    ComponentImpl compImpl = retrieve_main_cmp_impl();
    // if (compImpl.getBlockImpl() == null) {
    compImpl = retrieve_block_impl(compImpl);
    // }
    ContractSpec contractSpec = compImpl.getType().getContract();
    contractSpec.getSymbol().addAll(vars_dec);
}