mirror of
https://github.com/lwip-tcpip/lwip.git
synced 2024-11-16 23:15:37 +00:00
ac46e42aa2
... from http://git.savannah.gnu.org/cgit/lwip/lwip-contrib.git/ into contrib/ subdir, STABLE-2_1_0_RELEASE tag lwIP contrib is now officially frozen TODO: Fix build
396 lines
14 KiB
C#
396 lines
14 KiB
C#
/*
|
|
* Copyright (c) 2001-2004 Swedish Institute of Computer Science.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without modification,
|
|
* are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice,
|
|
* this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
* 3. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
|
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
|
|
* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
|
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
|
|
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
|
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
|
|
* OF SUCH DAMAGE.
|
|
*
|
|
* This file is part of the lwIP TCP/IP stack.
|
|
*
|
|
* Author: Martin Hentschel <info@cl-soft.de>
|
|
*
|
|
*/
|
|
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using CCodeGeneration;
|
|
|
|
namespace LwipSnmpCodeGeneration
|
|
{
|
|
public class SnmpScalarNode: SnmpNode
|
|
{
|
|
protected const string LocalValueName = "v"; // name of (casted) local value variable
|
|
|
|
private SnmpDataType dataType;
|
|
private SnmpAccessMode accessMode;
|
|
private readonly List<IRestriction> restrictions = new List<IRestriction>();
|
|
|
|
private bool useExternalMethods = false;
|
|
private string externalGetMethod;
|
|
private string externalTestMethod;
|
|
private string externalSetMethod;
|
|
|
|
|
|
public SnmpScalarNode(SnmpTreeNode parentNode)
|
|
: base(parentNode)
|
|
{
|
|
}
|
|
|
|
public override string FullNodeName
|
|
{
|
|
get { return this.Name.ToLowerInvariant() + "_scalar"; }
|
|
}
|
|
|
|
public SnmpDataType DataType
|
|
{
|
|
get { return this.dataType; }
|
|
set { this.dataType = value; }
|
|
}
|
|
|
|
public List<IRestriction> Restrictions
|
|
{
|
|
get { return this.restrictions; }
|
|
}
|
|
|
|
public SnmpAccessMode AccessMode
|
|
{
|
|
get { return this.accessMode; }
|
|
set { this.accessMode = value; }
|
|
}
|
|
|
|
public virtual string FixedValueLength
|
|
{
|
|
get { return null; }
|
|
}
|
|
|
|
/// <summary>
|
|
/// If scalar is used as a table index its value becomes part of the OID. This value returns how many OID parts are required to represent this value.
|
|
/// </summary>
|
|
public virtual int OidRepresentationLen
|
|
{
|
|
get { return -1; }
|
|
}
|
|
|
|
public bool UseExternalMethods
|
|
{
|
|
get { return this.useExternalMethods; }
|
|
set { this.useExternalMethods = value; }
|
|
}
|
|
|
|
public string ExternalGetMethod
|
|
{
|
|
get { return this.externalGetMethod; }
|
|
set { this.externalGetMethod = value; }
|
|
}
|
|
public string ExternalTestMethod
|
|
{
|
|
get { return this.externalTestMethod; }
|
|
set { this.externalTestMethod = value; }
|
|
}
|
|
public string ExternalSetMethod
|
|
{
|
|
get { return this.externalSetMethod; }
|
|
set { this.externalSetMethod = value; }
|
|
}
|
|
|
|
public override void GenerateCode(MibCFile mibFile)
|
|
{
|
|
string getMethodName;
|
|
string testMethodName;
|
|
string setMethodName;
|
|
|
|
if (this.useExternalMethods)
|
|
{
|
|
getMethodName = this.externalGetMethod;
|
|
testMethodName = this.externalTestMethod;
|
|
setMethodName = this.externalSetMethod;
|
|
}
|
|
else
|
|
{
|
|
getMethodName = LwipDefs.Null;
|
|
testMethodName = LwipDefs.Null;
|
|
setMethodName = LwipDefs.Null;
|
|
|
|
if ((this.accessMode == SnmpAccessMode.ReadWrite) || (this.accessMode == SnmpAccessMode.ReadOnly))
|
|
{
|
|
FunctionDeclaration getMethodDecl = new FunctionDeclaration(this.Name + LwipDefs.FnctSuffix_GetValue, isStatic: true);
|
|
getMethodDecl.Parameter.Add(new VariableType("instance", LwipDefs.Vt_StNodeInstance, "*"));
|
|
getMethodDecl.Parameter.Add(new VariableType("value", VariableType.VoidString, "*"));
|
|
getMethodDecl.ReturnType = new VariableType(null, LwipDefs.Vt_S16);
|
|
mibFile.Declarations.Add(getMethodDecl);
|
|
|
|
Function getMethod = Function.FromDeclaration(getMethodDecl);
|
|
getMethodName = getMethod.Name;
|
|
|
|
VariableDeclaration returnValue = new VariableDeclaration((VariableType)getMethod.ReturnType.Clone());
|
|
returnValue.Type.Name = "value_len";
|
|
getMethod.Declarations.Add(returnValue);
|
|
getMethod.AddCodeFormat("LWIP_UNUSED_ARG({0});", getMethod.Parameter[0].Name);
|
|
|
|
bool valueVarUsed = false;
|
|
GenerateGetMethodCode(getMethod, getMethod.Parameter[1].Name, ref valueVarUsed, returnValue.Type.Name);
|
|
if (!valueVarUsed)
|
|
{
|
|
getMethod.AddCodeFormat("LWIP_UNUSED_ARG({0});", getMethod.Parameter[1].Name);
|
|
}
|
|
|
|
getMethod.AddCodeFormat("return {0};", returnValue.Type.Name);
|
|
|
|
mibFile.Implementation.Add(getMethod);
|
|
}
|
|
|
|
if ((this.accessMode == SnmpAccessMode.ReadWrite) || (this.accessMode == SnmpAccessMode.WriteOnly))
|
|
{
|
|
bool valueVarUsed;
|
|
bool lenVarUsed;
|
|
VariableDeclaration returnValue;
|
|
|
|
if (this.restrictions.Count > 0)
|
|
{
|
|
FunctionDeclaration testMethodDecl = new FunctionDeclaration(this.Name + LwipDefs.FnctSuffix_SetTest, isStatic: true);
|
|
testMethodDecl.Parameter.Add(new VariableType("instance", LwipDefs.Vt_StNodeInstance, "*"));
|
|
testMethodDecl.Parameter.Add(new VariableType("len", LwipDefs.Vt_U16));
|
|
testMethodDecl.Parameter.Add(new VariableType("value", VariableType.VoidString, "*"));
|
|
testMethodDecl.ReturnType = new VariableType(null, LwipDefs.Vt_Snmp_err);
|
|
mibFile.Declarations.Add(testMethodDecl);
|
|
|
|
Function testMethod = Function.FromDeclaration(testMethodDecl);
|
|
testMethodName = testMethod.Name;
|
|
|
|
returnValue = new VariableDeclaration((VariableType)testMethod.ReturnType.Clone(), LwipDefs.Def_ErrorCode_WrongValue);
|
|
returnValue.Type.Name = "err";
|
|
testMethod.Declarations.Add(returnValue);
|
|
testMethod.AddCodeFormat("LWIP_UNUSED_ARG({0});", testMethod.Parameter[0].Name);
|
|
|
|
valueVarUsed = false;
|
|
lenVarUsed = false;
|
|
|
|
GenerateTestMethodCode(testMethod, testMethod.Parameter[2].Name, ref valueVarUsed, testMethod.Parameter[1].Name, ref lenVarUsed, returnValue.Type.Name);
|
|
|
|
if (!valueVarUsed)
|
|
{
|
|
testMethod.AddCodeFormat("LWIP_UNUSED_ARG({0});", testMethod.Parameter[2].Name);
|
|
}
|
|
if (!lenVarUsed)
|
|
{
|
|
testMethod.AddCodeFormat("LWIP_UNUSED_ARG({0});", testMethod.Parameter[1].Name);
|
|
}
|
|
|
|
testMethod.AddCodeFormat("return {0};", returnValue.Type.Name);
|
|
|
|
mibFile.Implementation.Add(testMethod);
|
|
|
|
}
|
|
else
|
|
{
|
|
testMethodName = LwipDefs.FnctName_SetTest_Ok;
|
|
}
|
|
|
|
FunctionDeclaration setMethodDecl = null;
|
|
setMethodDecl = new FunctionDeclaration(this.Name + LwipDefs.FnctSuffix_SetValue, isStatic: true);
|
|
setMethodDecl.Parameter.Add(new VariableType("instance", LwipDefs.Vt_StNodeInstance, "*"));
|
|
setMethodDecl.Parameter.Add(new VariableType("len", LwipDefs.Vt_U16));
|
|
setMethodDecl.Parameter.Add(new VariableType("value", VariableType.VoidString, "*"));
|
|
setMethodDecl.ReturnType = new VariableType(null, LwipDefs.Vt_Snmp_err);
|
|
mibFile.Declarations.Add(setMethodDecl);
|
|
|
|
Function setMethod = Function.FromDeclaration(setMethodDecl);
|
|
setMethodName = setMethod.Name;
|
|
|
|
returnValue = new VariableDeclaration((VariableType)setMethod.ReturnType.Clone(), LwipDefs.Def_ErrorCode_Ok);
|
|
returnValue.Type.Name = "err";
|
|
setMethod.Declarations.Add(returnValue);
|
|
setMethod.AddCodeFormat("LWIP_UNUSED_ARG({0});", setMethod.Parameter[0].Name);
|
|
|
|
valueVarUsed = false;
|
|
lenVarUsed = false;
|
|
|
|
GenerateSetMethodCode(setMethod, setMethod.Parameter[2].Name, ref valueVarUsed, setMethod.Parameter[1].Name, ref lenVarUsed, returnValue.Type.Name);
|
|
|
|
if (!valueVarUsed)
|
|
{
|
|
setMethod.AddCodeFormat("LWIP_UNUSED_ARG({0});", setMethod.Parameter[2].Name);
|
|
}
|
|
if (!lenVarUsed)
|
|
{
|
|
setMethod.AddCodeFormat("LWIP_UNUSED_ARG({0});", setMethod.Parameter[1].Name);
|
|
}
|
|
|
|
setMethod.AddCodeFormat("return {0};", returnValue.Type.Name);
|
|
|
|
mibFile.Implementation.Add(setMethod);
|
|
}
|
|
}
|
|
|
|
// create and add node declaration
|
|
string nodeInitialization;
|
|
if (this.accessMode == SnmpAccessMode.ReadOnly)
|
|
{
|
|
nodeInitialization = String.Format("SNMP_SCALAR_CREATE_NODE_READONLY({0}, {1}, {2})",
|
|
this.Oid,
|
|
LwipDefs.GetAsn1DefForSnmpDataType(this.dataType),
|
|
getMethodName);
|
|
}
|
|
else
|
|
{
|
|
nodeInitialization = String.Format("SNMP_SCALAR_CREATE_NODE({0}, {1}, {2}, {3}, {4}, {5})",
|
|
this.Oid,
|
|
LwipDefs.GetLwipDefForSnmpAccessMode(this.accessMode),
|
|
LwipDefs.GetAsn1DefForSnmpDataType(this.dataType),
|
|
getMethodName,
|
|
testMethodName,
|
|
setMethodName);
|
|
}
|
|
|
|
mibFile.Declarations.Add(new VariableDeclaration(
|
|
new VariableType(this.FullNodeName, LwipDefs.Vt_StScalarNode, null, ConstType.Value),
|
|
nodeInitialization, isStatic: true));
|
|
}
|
|
|
|
public virtual void GenerateGetMethodCode(CodeContainerBase container, string valueVarName, ref bool valueVarUsed, string retLenVarName)
|
|
{
|
|
bool localValueVarUsed;
|
|
if (GenerateValueDeclaration(container, LocalValueName, valueVarName))
|
|
{
|
|
valueVarUsed = true;
|
|
localValueVarUsed = false;
|
|
}
|
|
else
|
|
{
|
|
localValueVarUsed = true; // do not generate UNUSED_ARG code
|
|
}
|
|
|
|
if (this.FixedValueLength == null)
|
|
{
|
|
// check that value with variable length fits into buffer
|
|
container.AddElement(new Comment(String.Format("TODO: take care that value with variable length fits into buffer: ({0} <= SNMP_MAX_VALUE_SIZE)", retLenVarName), singleLine: true));
|
|
}
|
|
|
|
GenerateGetMethodCodeCore(container, LocalValueName, ref localValueVarUsed, retLenVarName);
|
|
if (!localValueVarUsed)
|
|
{
|
|
container.AddCode(String.Format("LWIP_UNUSED_ARG({0});", LocalValueName));
|
|
}
|
|
}
|
|
|
|
protected virtual void GenerateGetMethodCodeCore(CodeContainerBase container, string localValueVarName, ref bool localValueVarUsed, string retLenVarName)
|
|
{
|
|
container.AddElement(new Comment(String.Format("TODO: put requested value to '*{0}' here", localValueVarName), singleLine: true));
|
|
container.AddCodeFormat("{0} = {1};",
|
|
retLenVarName,
|
|
(!String.IsNullOrWhiteSpace(this.FixedValueLength)) ? this.FixedValueLength : "0");
|
|
}
|
|
|
|
public virtual void GenerateTestMethodCode(CodeContainerBase container, string valueVarName, ref bool valueVarUsed, string lenVarName, ref bool lenVarUsed, string retErrVarName)
|
|
{
|
|
if (this.Restrictions.Count > 0)
|
|
{
|
|
bool localVarUsed;
|
|
if (GenerateValueDeclaration(container, LocalValueName, valueVarName))
|
|
{
|
|
valueVarUsed = true;
|
|
localVarUsed = false;
|
|
}
|
|
else
|
|
{
|
|
localVarUsed = true; // do not generate UNUSED_ARG code
|
|
}
|
|
|
|
if (!String.IsNullOrWhiteSpace(this.FixedValueLength))
|
|
{
|
|
// check for fixed value
|
|
container.AddCodeFormat("LWIP_ASSERT(\"Invalid length for datatype\", ({0} == {1}));", lenVarName, this.FixedValueLength);
|
|
lenVarUsed = true;
|
|
}
|
|
|
|
GenerateTestMethodCodeCore(container, LocalValueName, ref localVarUsed, lenVarName, ref lenVarUsed, retErrVarName);
|
|
|
|
if (!localVarUsed)
|
|
{
|
|
container.AddCode(String.Format("LWIP_UNUSED_ARG({0});", LocalValueName));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
container.AddCodeFormat("{0} = {1};", retErrVarName, LwipDefs.Def_ErrorCode_Ok);
|
|
}
|
|
}
|
|
|
|
protected virtual void GenerateTestMethodCodeCore(CodeContainerBase container, string localValueVarName, ref bool localValueVarUsed, string lenVarName, ref bool lenVarUsed, string retErrVarName)
|
|
{
|
|
container.AddElement(new Comment(String.Format("TODO: test new value here:\nif (*{0} == ) {1} = {2};", localValueVarName, retErrVarName, LwipDefs.Def_ErrorCode_Ok)));
|
|
}
|
|
|
|
public virtual void GenerateSetMethodCode(CodeContainerBase container, string valueVarName, ref bool valueVarUsed, string lenVarName, ref bool lenVarUsed, string retErrVarName)
|
|
{
|
|
bool localVarUsed;
|
|
if (GenerateValueDeclaration(container, LocalValueName, valueVarName))
|
|
{
|
|
valueVarUsed = true;
|
|
localVarUsed = false;
|
|
}
|
|
else
|
|
{
|
|
localVarUsed = true; // do not generate UNUSED_ARG code
|
|
}
|
|
|
|
GenerateSetMethodCodeCore(container, LocalValueName, ref localVarUsed, lenVarName, ref lenVarUsed, retErrVarName);
|
|
|
|
if (!localVarUsed)
|
|
{
|
|
container.AddCode(String.Format("LWIP_UNUSED_ARG({0});", LocalValueName));
|
|
}
|
|
}
|
|
|
|
protected virtual void GenerateSetMethodCodeCore(CodeContainerBase container, string localValueVarName, ref bool localValueVarUsed, string lenVarName, ref bool lenVarUsed, string retErrVarName)
|
|
{
|
|
container.AddElement(new Comment(String.Format("TODO: store new value contained in '*{0}' here", localValueVarName), singleLine: true));
|
|
}
|
|
|
|
|
|
protected virtual bool GenerateValueDeclaration(CodeContainerBase container, string variableName, string sourceName)
|
|
{
|
|
container.AddDeclaration(new VariableDeclaration(
|
|
new VariableType(variableName, LwipDefs.Vt_U8, "*"),
|
|
"(" + new VariableType(null, LwipDefs.Vt_U8, "*") + ")" + sourceName));
|
|
|
|
return true;
|
|
}
|
|
|
|
public static SnmpScalarNode CreateFromDatatype(SnmpDataType dataType, SnmpTreeNode parentNode)
|
|
{
|
|
switch (dataType)
|
|
{
|
|
case SnmpDataType.Integer:
|
|
return new SnmpScalarNodeInt(parentNode);
|
|
|
|
case SnmpDataType.Gauge:
|
|
case SnmpDataType.Counter:
|
|
case SnmpDataType.TimeTicks:
|
|
return new SnmpScalarNodeUint(dataType, parentNode);
|
|
}
|
|
|
|
return new SnmpScalarNode(parentNode);
|
|
}
|
|
}
|
|
}
|