author | František Kučera <franta-hg@frantovo.cz> |
Fri, 16 Jul 2021 21:01:02 +0200 | |
branch | v_0 |
changeset 31 | a87c97aecbf6 |
parent 27 | d9cc2d356cdb |
child 35 | bf2c546f49d1 |
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 <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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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"); |
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else if (header.tag == UniversalType::Set) handlers.writeStartElement("set"); |
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else if (header.tag == UniversalType::OctetString || header.tag == UniversalType::BitString) handlers.writeStartElement("encapsulated",{"type", std::to_string(header.tag)}); // TODO: type name, better attributes |
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else handlers.writeStartElement("constructed"); |
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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"); |
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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"); |
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handlers.writeEndElement(); |
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} |
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void writeInteger(const Header& header, Integer value) override { |
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handlers.writeStartElement("integer",{"hex", value.toHex()}); |
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handlers.writeCharacters(value.toString()); |
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handlers.writeEndElement(); |
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} |
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void writeTextString(const Header& header, std::string value) override { |
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handlers.writeStartElement("text-string",{"type", std::to_string(header.tag)}); // TODO: type name, better attributes |
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handlers.writeCharacters(value); |
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handlers.writeEndElement(); |
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} |
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void writeOctetString(const Header& header, std::string value) override { |
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std::stringstream hex; |
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hex << std::hex << std::setfill('0'); |
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for (uint8_t b : value) hex << std::setw(2) << (int) b; |
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handlers.writeStartElement("octet-string",{"length", std::to_string(value.size())}); |
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handlers.writeCharacters(hex.str()); |
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handlers.writeEndElement(); |
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} |
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void writeBitString(const Header& header, std::vector<bool> value) override { |
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std::stringstream bits; |
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for (bool b : value) bits << (int) b; |
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// for (bool b : value) bits << (b ? ':' : '.'); // TODO: configurable true/false symbols? |
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handlers.writeStartElement("bit-string",{"length", std::to_string(value.size())}); |
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103 |
handlers.writeCharacters(bits.str()); |
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handlers.writeEndElement(); |
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105 |
} |
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106 |
|
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107 |
void writeOID(const Header& header, ObjectIdentifier value) override { |
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// TODO: optionally expand into separate elements with additional metadata |
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handlers.writeStartElement("oid"); |
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handlers.writeCharacters(value.toString()); |
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handlers.writeEndElement(); |
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112 |
} |
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113 |
|
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void writeDateTime(const Header& header, DateTime value) override { |
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handlers.writeStartElement("date-time"); |
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handlers.writeCharacters(value.toString()); |
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handlers.writeEndElement(); |
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118 |
} |
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119 |
|
1
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AbstractParser: AbstractParser, ASN1Reader, ASN1ContentHandler, SAXContentHandler, BasicASN1Reader, DOMBuildingSAXContentHandler, GenericASN1ContentHandler skeletons
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}; |
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121 |
|
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AbstractParser: AbstractParser, ASN1Reader, ASN1ContentHandler, SAXContentHandler, BasicASN1Reader, DOMBuildingSAXContentHandler, GenericASN1ContentHandler skeletons
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} |
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123 |
} |
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} |
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125 |
} |