oauth_par.h

#ifndef SOURCEMETA_CORE_OAUTH_PAR_H_
#define SOURCEMETA_CORE_OAUTH_PAR_H_
 
#ifndef SOURCEMETA_CORE_OAUTH_EXPORT
#include <sourcemeta/core/oauth_export.h>
#endif
 
#include <sourcemeta/core/crypto.h>
#include <sourcemeta/core/json.h>
#include <sourcemeta/core/oauth_authorization.h>
 
#include <chrono>      // std::chrono::seconds, std::chrono::system_clock
#include <functional>  // std::function
#include <optional>    // std::optional
#include <string>      // std::string
#include <string_view> // std::string_view
 
namespace sourcemeta::core {

SOURCEMETA_CORE_OAUTH_EXPORT
auto oauth_build_par_request(const OAuthAuthorizationRequest &request,
                             SecureString &sink) -> void;

SOURCEMETA_CORE_OAUTH_EXPORT
auto oauth_build_par_authorization_url(const std::string_view endpoint,
                                       const std::string_view client_id,
                                       const std::string_view request_uri,
                                       std::string &sink) -> void;

class SOURCEMETA_CORE_OAUTH_EXPORT OAuthPARResponse {
public:
  explicit OAuthPARResponse(const JSON &data);

  [[nodiscard]] auto request_uri() const -> std::optional<std::string_view>;
  [[nodiscard]] auto expires_in() const -> std::optional<std::chrono::seconds>;

  [[nodiscard]] auto data() const -> const JSON &;
 
private:
  const JSON *data_;
};

[[nodiscard]] SOURCEMETA_CORE_OAUTH_EXPORT auto oauth_parse_par_request(
    const std::string_view body, SecureString &storage,
    OAuthAuthorizationRequest &result,
    const std::function<void(std::string_view, std::string_view)> &on_other)
    -> bool;

[[nodiscard]] SOURCEMETA_CORE_OAUTH_EXPORT auto oauth_par_request_uri()
    -> std::string;

[[nodiscard]] SOURCEMETA_CORE_OAUTH_EXPORT auto
oauth_make_par_response(const std::string_view request_uri,
                        const std::chrono::seconds expires_in)
    -> std::optional<JSON>;

[[nodiscard]] SOURCEMETA_CORE_OAUTH_EXPORT auto
oauth_par_dpop_binding(const std::string_view dpop_jkt,
                       const std::optional<std::string_view> proof_thumbprint)
    -> std::optional<std::string_view>;
 
} // namespace sourcemeta::core
 
#endif