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https://github.com/qpdf/qpdf.git
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503 lines
12 KiB
C++
503 lines
12 KiB
C++
#include <qpdf/QPDFJob.hh>
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// See "HOW TO ADD A COMMAND-LINE ARGUMENT" in README-maintainer.
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#include <iostream>
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#include <string.h>
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#include <stdlib.h>
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#include <cstdio>
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#include <ctype.h>
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#include <memory>
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#include <sstream>
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#include <qpdf/QUtil.hh>
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#include <qpdf/QTC.hh>
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#include <qpdf/QPDFCryptoProvider.hh>
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#include <qpdf/QPDFArgParser.hh>
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#include <qpdf/QPDFJob.hh>
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#include <qpdf/QIntC.hh>
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namespace
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{
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class ArgParser
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{
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public:
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ArgParser(QPDFArgParser& ap,
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std::shared_ptr<QPDFJob::Config> c_main, QPDFJob& o);
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void parseOptions();
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private:
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# include <qpdf/auto_job_decl.hh>
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void usage(std::string const& message);
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void initOptionTables();
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QPDFArgParser ap;
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std::shared_ptr<QPDFJob::Config> c_main;
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std::shared_ptr<QPDFJob::CopyAttConfig> c_copy_att;
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std::shared_ptr<QPDFJob::AttConfig> c_att;
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std::shared_ptr<QPDFJob::PagesConfig> c_pages;
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std::shared_ptr<QPDFJob::UOConfig> c_uo;
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std::shared_ptr<QPDFJob::EncConfig> c_enc;
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std::vector<char*> accumulated_args; // points to member in ap
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char* pages_password;
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bool gave_input;
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bool gave_output;
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};
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}
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ArgParser::ArgParser(QPDFArgParser& ap,
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std::shared_ptr<QPDFJob::Config> c_main, QPDFJob& o) :
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ap(ap),
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c_main(c_main),
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pages_password(nullptr),
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gave_input(false),
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gave_output(false)
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{
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initOptionTables();
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}
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#include <qpdf/auto_job_help.hh>
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void
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ArgParser::initOptionTables()
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{
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# include <qpdf/auto_job_init.hh>
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// add_help is defined in auto_job_help.hh
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add_help(this->ap);
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}
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void
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ArgParser::argPositional(char* arg)
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{
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if (! this->gave_input)
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{
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c_main->inputFile(arg);
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this->gave_input = true;
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}
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else if (! this->gave_output)
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{
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c_main->outputFile(arg);
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this->gave_output = true;
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}
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else
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{
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usage(std::string("unknown argument ") + arg);
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}
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}
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void
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ArgParser::argEmpty()
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{
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c_main->emptyInput();
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this->gave_input = true;
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}
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void
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ArgParser::argReplaceInput()
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{
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c_main->replaceInput();
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this->gave_output = true;
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}
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void
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ArgParser::argVersion()
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{
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auto whoami = this->ap.getProgname();
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std::cout
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<< whoami << " version " << QPDF::QPDFVersion() << std::endl
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<< "Run " << whoami << " --copyright to see copyright and license information."
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<< std::endl;
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}
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void
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ArgParser::argCopyright()
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{
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// Make sure the output looks right on an 80-column display.
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// 1 2 3 4 5 6 7 8
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// 12345678901234567890123456789012345678901234567890123456789012345678901234567890
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std::cout
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<< this->ap.getProgname()
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<< " version " << QPDF::QPDFVersion() << std::endl
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<< std::endl
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<< "Copyright (c) 2005-2021 Jay Berkenbilt"
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<< std::endl
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<< "QPDF is licensed under the Apache License, Version 2.0 (the \"License\");"
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<< std::endl
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<< "you may not use this file except in compliance with the License."
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<< std::endl
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<< "You may obtain a copy of the License at"
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<< std::endl
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<< std::endl
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<< " http://www.apache.org/licenses/LICENSE-2.0"
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<< std::endl
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<< std::endl
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<< "Unless required by applicable law or agreed to in writing, software"
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<< std::endl
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<< "distributed under the License is distributed on an \"AS IS\" BASIS,"
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<< std::endl
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<< "WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied."
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<< std::endl
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<< "See the License for the specific language governing permissions and"
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<< std::endl
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<< "limitations under the License."
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<< std::endl
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<< std::endl
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<< "Versions of qpdf prior to version 7 were released under the terms"
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<< std::endl
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<< "of version 2.0 of the Artistic License. At your option, you may"
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<< std::endl
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<< "continue to consider qpdf to be licensed under those terms. Please"
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<< std::endl
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<< "see the manual for additional information."
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<< std::endl;
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}
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void
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ArgParser::argJsonHelp()
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{
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// Make sure the output looks right on an 80-column display.
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// 1 2 3 4 5 6 7 8
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// 12345678901234567890123456789012345678901234567890123456789012345678901234567890
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std::cout
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<< "The json block below contains the same structure with the same keys as the"
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<< std::endl
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<< "json generated by qpdf. In the block below, the values are descriptions of"
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<< std::endl
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<< "the meanings of those entries. The specific contract guaranteed by qpdf in"
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<< std::endl
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<< "its json representation is explained in more detail in the manual. You can"
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<< std::endl
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<< "specify a subset of top-level keys when you invoke qpdf, but the \"version\""
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<< std::endl
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<< "and \"parameters\" keys will always be present. Note that the \"encrypt\""
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<< std::endl
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<< "key's values will be populated for non-encrypted files. Some values will"
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<< std::endl
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<< "be null, and others will have values that apply to unencrypted files."
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<< std::endl
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<< QPDFJob::json_out_schema_v1()
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<< std::endl;
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}
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void
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ArgParser::argShowCrypto()
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{
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auto crypto = QPDFCryptoProvider::getRegisteredImpls();
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std::string default_crypto = QPDFCryptoProvider::getDefaultProvider();
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std::cout << default_crypto << std::endl;
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for (auto const& iter: crypto)
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{
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if (iter != default_crypto)
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{
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std::cout << iter << std::endl;
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}
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}
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}
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void
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ArgParser::argEncrypt()
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{
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this->accumulated_args.clear();
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if (this->ap.isCompleting() && this->ap.argsLeft() == 0)
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{
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this->ap.insertCompletion("user-password");
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}
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this->ap.selectOptionTable(O_ENCRYPTION);
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}
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void
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ArgParser::argEncPositional(char* arg)
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{
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this->accumulated_args.push_back(arg);
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size_t n_args = this->accumulated_args.size();
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if (n_args < 3)
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{
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if (this->ap.isCompleting() && (this->ap.argsLeft() == 0))
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{
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if (n_args == 1)
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{
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this->ap.insertCompletion("owner-password");
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}
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else if (n_args == 2)
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{
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this->ap.insertCompletion("40");
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this->ap.insertCompletion("128");
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this->ap.insertCompletion("256");
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}
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}
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return;
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}
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std::string user_password = this->accumulated_args.at(0);
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std::string owner_password = this->accumulated_args.at(1);
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std::string len_str = this->accumulated_args.at(2);
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int keylen = 0;
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if (len_str == "40")
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{
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keylen = 40;
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this->ap.selectOptionTable(O_40_BIT_ENCRYPTION);
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}
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else if (len_str == "128")
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{
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keylen = 128;
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this->ap.selectOptionTable(O_128_BIT_ENCRYPTION);
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}
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else if (len_str == "256")
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{
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keylen = 256;
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this->ap.selectOptionTable(O_256_BIT_ENCRYPTION);
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}
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else
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{
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usage("encryption key length must be 40, 128, or 256");
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}
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this->c_enc = c_main->encrypt(keylen, user_password, owner_password);
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}
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void
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ArgParser::argPages()
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{
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this->accumulated_args.clear();
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this->c_pages = c_main->pages();
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this->ap.selectOptionTable(O_PAGES);
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}
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void
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ArgParser::argPagesPassword(char* parameter)
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{
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if (this->pages_password != nullptr)
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{
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QTC::TC("qpdf", "qpdf duplicated pages password");
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usage("--password already specified for this file");
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}
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if (this->accumulated_args.size() != 1)
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{
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QTC::TC("qpdf", "qpdf misplaced pages password");
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usage("in --pages, --password must immediately follow a file name");
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}
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this->pages_password = parameter;
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}
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void
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ArgParser::argPagesPositional(char* arg)
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{
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if (arg == nullptr)
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{
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if (this->accumulated_args.empty())
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{
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return;
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}
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}
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else
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{
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this->accumulated_args.push_back(arg);
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}
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char const* file = this->accumulated_args.at(0);
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char const* range = nullptr;
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size_t n_args = this->accumulated_args.size();
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if (n_args >= 2)
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{
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range = this->accumulated_args.at(1);
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}
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// See if the user omitted the range entirely, in which case we
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// assume "1-z".
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char* next_file = nullptr;
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if (range == nullptr)
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{
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if (arg == nullptr)
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{
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// The filename or password was the last argument
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QTC::TC("qpdf", "qpdf pages range omitted at end",
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this->pages_password == nullptr ? 0 : 1);
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}
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else
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{
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// We need to accumulate some more arguments
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return;
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}
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}
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else
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{
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try
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{
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QUtil::parse_numrange(range, 0);
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}
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catch (std::runtime_error& e1)
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{
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// The range is invalid. Let's see if it's a file.
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if (strcmp(range, ".") == 0)
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{
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// "." means the input file.
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QTC::TC("qpdf", "qpdf pages range omitted with .");
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}
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else if (QUtil::file_can_be_opened(range))
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{
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QTC::TC("qpdf", "qpdf pages range omitted in middle");
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// Yup, it's a file.
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}
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else
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{
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// Give the range error
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usage(e1.what());
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}
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next_file = const_cast<char*>(range);
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range = nullptr;
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}
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}
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if (range == nullptr)
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{
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range = "1-z";
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}
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this->c_pages->pageSpec(file, range, this->pages_password);
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this->accumulated_args.clear();
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this->pages_password = nullptr;
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if (next_file != nullptr)
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{
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this->accumulated_args.push_back(next_file);
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}
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}
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void
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ArgParser::argEndPages()
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{
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argPagesPositional(nullptr);
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c_pages->endPages();
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c_pages = nullptr;
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}
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void
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ArgParser::argUnderlay()
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{
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this->c_uo = c_main->underlay();
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this->ap.selectOptionTable(O_UNDERLAY_OVERLAY);
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}
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void
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ArgParser::argOverlay()
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{
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this->c_uo = c_main->overlay();
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this->ap.selectOptionTable(O_UNDERLAY_OVERLAY);
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}
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void
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ArgParser::argAddAttachment()
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{
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this->c_att = c_main->addAttachment();
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this->ap.selectOptionTable(O_ATTACHMENT);
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}
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void
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ArgParser::argCopyAttachmentsFrom()
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{
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this->c_copy_att = c_main->copyAttachmentsFrom();
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this->ap.selectOptionTable(O_COPY_ATTACHMENT);
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}
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void
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ArgParser::argEndEncryption()
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{
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c_enc->endEncrypt();
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c_enc = nullptr;
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}
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void
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ArgParser::argEnd40BitEncryption()
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{
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argEndEncryption();
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}
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void
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ArgParser::argEnd128BitEncryption()
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{
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argEndEncryption();
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}
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void
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ArgParser::argEnd256BitEncryption()
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{
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argEndEncryption();
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}
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void
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ArgParser::argUOPositional(char* arg)
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{
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c_uo->path(arg);
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}
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void
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ArgParser::argEndUnderlayOverlay()
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{
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c_uo->endUnderlayOverlay();
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c_uo = nullptr;
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}
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void
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ArgParser::argAttPositional(char* arg)
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{
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c_att->path(arg);
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}
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void
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ArgParser::argEndAttachment()
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{
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c_att->endAddAttachment();
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c_att = nullptr;
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}
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void
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ArgParser::argCopyAttPositional(char* arg)
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{
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c_copy_att->path(arg);
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}
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void
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ArgParser::argEndCopyAttachment()
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{
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c_copy_att->endCopyAttachmentsFrom();
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c_copy_att = nullptr;
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}
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void
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ArgParser::argJobJsonHelp()
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{
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std::cout << QPDFJob::json_job_schema_v1() << std::endl;
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}
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void
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ArgParser::usage(std::string const& message)
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{
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this->ap.usage(message);
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}
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void
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ArgParser::parseOptions()
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{
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try
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{
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this->ap.parseArgs();
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}
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catch (std::runtime_error& e)
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{
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usage(e.what());
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}
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}
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void
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QPDFJob::initializeFromArgv(int argc, char* argv[], char const* progname_env)
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{
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if (progname_env == nullptr)
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{
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progname_env = "QPDF_EXECUTABLE";
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}
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QPDFArgParser qap(argc, argv, progname_env);
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setMessagePrefix(qap.getProgname());
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ArgParser ap(qap, config(), *this);
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qap.addFinalCheck(
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QPDFArgParser::bindBare(&QPDFJob::checkConfiguration, this));
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ap.parseOptions();
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}
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