author | František Kučera <franta-hg@frantovo.cz> |
Thu, 22 Jul 2021 00:47:47 +0200 | |
branch | v_0 |
changeset 38 | 44ee477875ec |
parent 35 | bf2c546f49d1 |
child 39 | 6ef41443211e |
permissions | -rw-r--r-- |
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AbstractParser: AbstractParser, ASN1Reader, ASN1ContentHandler, SAXContentHandler, BasicASN1Reader, DOMBuildingSAXContentHandler, GenericASN1ContentHandler skeletons
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/** |
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* Relational pipes |
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* Copyright © 2021 František Kučera (Frantovo.cz, GlobalCode.info) |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, version 3 of the License. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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#pragma once |
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#include <string> |
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#include <sstream> |
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#include <iomanip> |
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#include "ASN1ContentHandler.h" |
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#include "XMLContentHandler.h" |
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namespace relpipe { |
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namespace in { |
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namespace asn1 { |
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namespace lib { |
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/** |
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* Converts ASN.1 events to XML SAX events. |
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* |
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* Does not need to know anything about the model/schema – works with generic events (nodes). |
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*/ |
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class GenericASN1ContentHandler : public ASN1ContentHandler { |
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private: |
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XMLContentHandlerProxy handlers; |
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std::vector<std::string> getCommonAttributes(const Header& header, std::vector<std::string> attributes = {}) { |
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std::string tag = std::to_string(header.tag); |
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std::string tagClass = std::to_string((uint64_t) header.tagClass); |
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std::string pc = std::to_string((uint8_t) header.pc); |
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if (header.tagClass == TagClass::Universal) tagClass = "universal"; |
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else if (header.tagClass == TagClass::ContextSpecific) tagClass = "context"; |
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else if (header.tagClass == TagClass::Application) tagClass = "application"; |
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else if (header.tagClass == TagClass::Private) tagClass = "private"; |
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// if (header.pc == PC::Constructed) pc = "constructed"; |
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// else if (header.pc == PC::Primitive) pc = "primitive"; |
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attributes.push_back("tag"); |
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attributes.push_back(tag); |
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// attributes.push_back("pc"); |
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// attributes.push_back(pc); |
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attributes.push_back("class"); |
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attributes.push_back(tagClass); |
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return attributes; |
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} |
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public: |
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void addHandler(std::shared_ptr<XMLContentHandler> handler) { |
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handlers.addHandler(handler); |
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} |
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virtual ~GenericASN1ContentHandler() { |
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} |
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void writeStreamStart() override { |
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handlers.writeStartElement("asn1"); |
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} |
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void writeStreamEnd() override { |
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handlers.writeEndElement(); |
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} |
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void writeCollectionStart(const Header& header) override { |
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if (header.tag == UniversalType::Sequence) handlers.writeStartElement("sequence", getCommonAttributes(header)); |
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else if (header.tag == UniversalType::Set) handlers.writeStartElement("set", getCommonAttributes(header)); |
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else if (header.tag == UniversalType::OctetString || header.tag == UniversalType::BitString) handlers.writeStartElement("encapsulated", getCommonAttributes(header)); |
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else handlers.writeStartElement("constructed", getCommonAttributes(header)); |
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} |
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void writeCollectionEnd() override { |
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handlers.writeEndElement(); |
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} |
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void writeBoolean(const Header& header, bool value) override { |
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handlers.writeStartElement("boolean", getCommonAttributes(header)); |
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handlers.writeCharacters(value ? "true" : "false"); |
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handlers.writeEndElement(); |
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} |
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void writeNull(const Header& header) override { |
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handlers.writeStartElement("null", getCommonAttributes(header)); |
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handlers.writeEndElement(); |
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} |
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102 |
void writeInteger(const Header& header, Integer value) override { |
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103 |
handlers.writeStartElement("integer", getCommonAttributes(header,{"hex", value.toHex()})); |
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104 |
handlers.writeCharacters(value.toString()); |
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105 |
handlers.writeEndElement(); |
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106 |
} |
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107 |
|
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108 |
void writeTextString(const Header& header, std::string value) override { |
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109 |
handlers.writeStartElement("text-string", getCommonAttributes(header)); |
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110 |
handlers.writeCharacters(value); |
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111 |
handlers.writeEndElement(); |
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112 |
} |
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113 |
|
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114 |
void writeOctetString(const Header& header, std::string value) override { |
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115 |
std::stringstream hex; |
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116 |
hex << std::hex << std::setfill('0'); |
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117 |
for (uint8_t b : value) hex << std::setw(2) << (int) b; |
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118 |
handlers.writeStartElement("octet-string", getCommonAttributes(header,{"length", std::to_string(value.size())})); |
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119 |
handlers.writeCharacters(hex.str()); |
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120 |
handlers.writeEndElement(); |
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121 |
} |
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122 |
|
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123 |
void writeBitString(const Header& header, std::vector<bool> value) override { |
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124 |
std::stringstream bits; |
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125 |
for (bool b : value) bits << (int) b; |
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126 |
// for (bool b : value) bits << (b ? ':' : '.'); // TODO: configurable true/false symbols? |
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127 |
handlers.writeStartElement("bit-string", getCommonAttributes(header,{"length", std::to_string(value.size())})); |
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128 |
handlers.writeCharacters(bits.str()); |
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129 |
handlers.writeEndElement(); |
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130 |
} |
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131 |
|
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132 |
void writeOID(const Header& header, ObjectIdentifier value) override { |
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133 |
// TODO: optionally expand into separate elements with additional metadata |
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134 |
handlers.writeStartElement("oid", getCommonAttributes(header)); // TODO: {"length", std::to_string(value.size())} |
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135 |
handlers.writeCharacters(value.toString()); |
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136 |
handlers.writeEndElement(); |
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137 |
} |
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138 |
|
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139 |
void writeDateTime(const Header& header, DateTime value) override { |
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140 |
handlers.writeStartElement("date-time", getCommonAttributes(header)); |
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|
141 |
handlers.writeCharacters(value.toString()); |
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142 |
handlers.writeEndElement(); |
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143 |
} |
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|
144 |
|
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145 |
void writeSpecific(const Header& header, std::string value) override { |
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146 |
std::stringstream hex; |
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147 |
hex << std::hex << std::setfill('0'); |
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|
148 |
for (uint8_t b : value) hex << std::setw(2) << (int) b; |
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|
149 |
|
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150 |
std::stringstream ascii; |
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151 |
for (uint8_t b : value) ascii << (b >= 32 && b < 127 ? (char) b : '.'); // TODO: configurable unsupported symbol? |
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|
152 |
|
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153 |
handlers.writeStartElement("specific", getCommonAttributes(header,{"length", std::to_string(value.size()), "hex", hex.str()})); |
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154 |
handlers.writeCharacters(ascii.str()); |
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155 |
handlers.writeEndElement(); |
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|
156 |
} |
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|
157 |
|
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|
158 |
|
1
2179f13227f4
AbstractParser: AbstractParser, ASN1Reader, ASN1ContentHandler, SAXContentHandler, BasicASN1Reader, DOMBuildingSAXContentHandler, GenericASN1ContentHandler skeletons
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159 |
}; |
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AbstractParser: AbstractParser, ASN1Reader, ASN1ContentHandler, SAXContentHandler, BasicASN1Reader, DOMBuildingSAXContentHandler, GenericASN1ContentHandler skeletons
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160 |
|
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AbstractParser: AbstractParser, ASN1Reader, ASN1ContentHandler, SAXContentHandler, BasicASN1Reader, DOMBuildingSAXContentHandler, GenericASN1ContentHandler skeletons
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161 |
} |
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AbstractParser: AbstractParser, ASN1Reader, ASN1ContentHandler, SAXContentHandler, BasicASN1Reader, DOMBuildingSAXContentHandler, GenericASN1ContentHandler skeletons
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162 |
} |
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AbstractParser: AbstractParser, ASN1Reader, ASN1ContentHandler, SAXContentHandler, BasicASN1Reader, DOMBuildingSAXContentHandler, GenericASN1ContentHandler skeletons
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163 |
} |
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AbstractParser: AbstractParser, ASN1Reader, ASN1ContentHandler, SAXContentHandler, BasicASN1Reader, DOMBuildingSAXContentHandler, GenericASN1ContentHandler skeletons
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164 |
} |