1 | /*
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2 | * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
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3 | * All rights reserved.
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4 | *
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5 | * Redistribution and use in source and binary forms, with or without modification,
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6 | * are permitted provided that the following conditions are met:
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7 | *
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8 | * 1. Redistributions of source code must retain the above copyright notice,
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9 | * this list of conditions and the following disclaimer.
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10 | * 2. Redistributions in binary form must reproduce the above copyright notice,
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11 | * this list of conditions and the following disclaimer in the documentation
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12 | * and/or other materials provided with the distribution.
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13 | * 3. The name of the author may not be used to endorse or promote products
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14 | * derived from this software without specific prior written permission.
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15 | *
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16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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18 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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19 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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20 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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21 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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22 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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23 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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24 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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25 | * OF SUCH DAMAGE.
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26 | *
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27 | * This file is part of the lwIP TCP/IP stack.
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28 | *
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29 | * Author: Martin Hentschel <info@cl-soft.de>
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30 | *
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31 | */
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32 |
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33 | using System;
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34 | using System.Text;
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35 | using CCodeGeneration;
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36 |
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37 | namespace LwipSnmpCodeGeneration
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38 | {
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39 | public class SnmpScalarNodeOctetString : SnmpScalarNode
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40 | {
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41 | public SnmpScalarNodeOctetString(SnmpDataType dataType, SnmpTreeNode parentNode)
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42 | : base(parentNode)
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43 | {
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44 | System.Diagnostics.Debug.Assert(
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45 | (dataType == SnmpDataType.OctetString) ||
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46 | (dataType == SnmpDataType.Opaque) ||
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47 | (dataType == SnmpDataType.IpAddress));
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48 |
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49 | this.DataType = dataType;
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50 | }
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51 |
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52 | protected override void GenerateGetMethodCodeCore(CodeContainerBase container, string localValueVarName, ref bool localValueVarUsed, string retLenVarName)
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53 | {
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54 | if (this.Restrictions.Count > 0)
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55 | {
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56 | StringBuilder ifCond = new StringBuilder();
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57 | foreach (IRestriction restriction in this.Restrictions)
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58 | {
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59 | ifCond.Append(restriction.GetCheckCodeValid(retLenVarName));
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60 | ifCond.Append(" || ");
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61 | }
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62 |
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63 | ifCond.Length -= 4;
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64 | container.AddElement(new Comment("TODO: take care of len restrictions defined in MIB: " + ifCond, singleLine: true));
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65 | }
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66 | base.GenerateGetMethodCodeCore(container, localValueVarName, ref localValueVarUsed, retLenVarName);
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67 | }
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68 |
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69 | protected override void GenerateTestMethodCodeCore(CodeContainerBase container, string localValueVarName, ref bool localValueVarUsed, string lenVarName, ref bool lenVarUsed, string retErrVarName)
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70 | {
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71 | System.Diagnostics.Trace.Assert(this.Restrictions.Count > 0);
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72 |
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73 | // checks refer to length of octet string
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74 | StringBuilder ifCond = new StringBuilder();
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75 | foreach (IRestriction restriction in this.Restrictions)
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76 | {
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77 | ifCond.Append(restriction.GetCheckCodeValid(lenVarName));
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78 | ifCond.Append(" || ");
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79 |
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80 | lenVarUsed = true;
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81 | }
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82 |
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83 | ifCond.Length -= 4;
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84 |
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85 | IfThenElse ite = new IfThenElse(ifCond.ToString());
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86 | ite.AddCode(String.Format("{0} = {1};", retErrVarName, LwipDefs.Def_ErrorCode_Ok));
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87 | container.AddElement(ite);
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88 | }
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89 |
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90 | public override int OidRepresentationLen
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91 | {
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92 | get
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93 | {
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94 | // check restrictions if we are set to one fixed length
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95 | if ((this.Restrictions != null) && (this.Restrictions.Count > 0))
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96 | {
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97 | foreach (IRestriction restriction in this.Restrictions)
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98 | {
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99 | if (restriction is IsInRangeRestriction)
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100 | {
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101 | if ((restriction as IsInRangeRestriction).RangeStart == (restriction as IsInRangeRestriction).RangeEnd)
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102 | {
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103 | return (int)(restriction as IsInRangeRestriction).RangeStart;
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104 | }
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105 | }
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106 | else if (restriction is IsEqualRestriction)
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107 | {
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108 | return (int)(restriction as IsEqualRestriction).Value;
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109 | }
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110 | }
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111 | }
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112 |
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113 | return -1; // variable length
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114 | }
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115 | }
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116 |
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117 | }
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118 | }
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