certificate.hpp

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#pragma once
 
/// @file userver/crypto/certificate.hpp
/// @brief @copybrief crypto::Certificate
 
#include <list>
#include <memory>
#include <optional>
#include <string>
#include <string_view>
 
#include <userver/crypto/basic_types.hpp>
 
USERVER_NAMESPACE_BEGIN
 
namespace crypto {
 
/// @ingroup userver_universal userver_containers
///
/// Loaded into memory X509 certificate
class Certificate {
public:
    using NativeType = X509;
 
    Certificate() = default;
 
    NativeType* GetNative() const noexcept { return cert_.get(); }
    explicit operator bool() const noexcept { return !!cert_; }
 
    /// Returns a PEM-encoded representation of stored certificate.
    ///
    /// @throw crypto::SerializationError if serialization fails.
    std::optional<std::string> GetPemString() const;
 
    /// Accepts a string that contains a certificate, checks that
    /// it's correct, loads it into OpenSSL structures and returns as a
    /// Certificate variable.
    ///
    /// @throw crypto::KeyParseError if failed to load the certificate.
    static Certificate LoadFromString(std::string_view certificate);
    /// Loads the certificate and skips the meta information in it
    /// @throw crypto::KeyParseError if failed to load the certificate.
    static Certificate LoadFromStringSkippingAttributes(std::string_view certificate);
 
    /// Returns Subject
    std::string GetSubject() const;
 
private:
    explicit Certificate(std::shared_ptr<NativeType> cert)
        : cert_(std::move(cert))
    {}
 
    std::shared_ptr<NativeType> cert_;
};
 
using CertificatesChain = std::list<Certificate>;
 
/// Accepts a string that contains a chain of certificates (primary and intermediate), checks that
/// it's correct, loads it into OpenSSL structures and returns as a
/// list of 'Certificate's.
///
/// @throw crypto::KeyParseError if failed to load the certificate.
CertificatesChain LoadCertificatesChainFromString(std::string_view chain);
 
}  // namespace crypto
 
USERVER_NAMESPACE_END