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120 lines
2.8 KiB
C++
120 lines
2.8 KiB
C++
#include <qpdf/QPDFCryptoProvider.hh>
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#include <qpdf/qpdf-config.h>
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#include <qpdf/QUtil.hh>
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#include <stdexcept>
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#ifdef USE_CRYPTO_NATIVE
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# include <qpdf/QPDFCrypto_native.hh>
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#endif
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#ifdef USE_CRYPTO_GNUTLS
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# include <qpdf/QPDFCrypto_gnutls.hh>
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#endif
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std::shared_ptr<QPDFCryptoImpl>
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QPDFCryptoProvider::getImpl()
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{
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QPDFCryptoProvider& p = getInstance();
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if (p.m->default_provider.empty())
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{
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throw std::logic_error(
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"QPDFCryptoProvider::getImpl called with no default provider.");
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}
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return p.getImpl_internal(p.m->default_provider);
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}
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std::shared_ptr<QPDFCryptoImpl>
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QPDFCryptoProvider::getImpl(std::string const& name)
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{
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return getInstance().getImpl_internal(name);
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}
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template<typename T>
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void
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QPDFCryptoProvider::registerImpl(std::string const& name)
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{
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getInstance().registerImpl_internal<T>(name);
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}
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void
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QPDFCryptoProvider::setDefaultProvider(std::string const& name)
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{
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getInstance().setDefaultProvider_internal(name);
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}
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QPDFCryptoProvider::QPDFCryptoProvider() :
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m(std::make_shared<Members>())
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{
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#ifdef USE_CRYPTO_NATIVE
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registerImpl_internal<QPDFCrypto_native>("native");
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#endif
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#ifdef USE_CRYPTO_GNUTLS
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registerImpl_internal<QPDFCrypto_gnutls>("gnutls");
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#endif
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std::string default_crypto;
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if (! QUtil::get_env("QPDF_CRYPTO_PROVIDER", &default_crypto))
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{
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default_crypto = DEFAULT_CRYPTO;
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}
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setDefaultProvider_internal(default_crypto);
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}
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QPDFCryptoProvider&
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QPDFCryptoProvider::getInstance()
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{
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static QPDFCryptoProvider instance;
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return instance;
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}
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std::shared_ptr<QPDFCryptoImpl>
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QPDFCryptoProvider::getImpl_internal(std::string const& name) const
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{
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auto iter = this->m->providers.find(name);
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if (iter == this->m->providers.end())
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{
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throw std::logic_error(
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"QPDFCryptoProvider requested unknown implementation \"" +
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name + "\"");
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}
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return this->m->providers[name]();
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}
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template<typename T>
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void
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QPDFCryptoProvider::registerImpl_internal(std::string const& name)
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{
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this->m->providers[name] = std::make_shared<T>;
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}
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void
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QPDFCryptoProvider::setDefaultProvider_internal(std::string const& name)
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{
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if (! this->m->providers.count(name))
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{
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throw std::logic_error(
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"QPDFCryptoProvider: request to set default"
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" provider to unknown implementation \"" +
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name + "\"");
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}
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this->m->default_provider = name;
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}
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std::set<std::string>
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QPDFCryptoProvider::getRegisteredImpls()
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{
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std::set<std::string> result;
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QPDFCryptoProvider& p = getInstance();
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for (auto iter = p.m->providers.begin(); iter != p.m->providers.end();
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++iter)
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{
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result.insert((*iter).first);
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}
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return result;
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}
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std::string
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QPDFCryptoProvider::getDefaultProvider()
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{
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return getInstance().m->default_provider;
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}
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