w the credentials
 * to be saved (to disk). A prompt function shall not ask the user if the
 * credentials shall be saved if @a may_save is FALSE. For example, a GUI
 * client with a trust permanently checkbox would grey out the checkbox if
 * @a may_save is FALSE.
 */
typedef svn_error_t *(*svn_auth_ssl_server_trust_prompt_func_t)(
  svn_auth_cred_ssl_server_trust_t **cred,
  void *baton,
  const char *realm,
  apr_uint32_t failures,
  const svn_auth_ssl_server_cert_info_t *cert_info,
  svn_boolean_t may_save,
  apr_pool_t *pool);


/** Set @a *cred by prompting the user, allocating @a *cred in @a pool.
 * @a baton is an implementation-specific closure.  @a realm is a string
 * that can be used in the prompt string.
 *
 * If @a may_save is FALSE, the auth system does not allow the credentials
 * to be saved (to disk). A prompt function shall not ask the user if the
 * credentials shall be saved if @a may_save is FALSE. For example, a GUI
 * client with a remember certificate checkbox would grey out the checkbox
 * if @a may_save is FALSE.
 */
typedef svn_error_t *(*svn_auth_ssl_client_cert_prompt_func_t)(
  svn_auth_cred_ssl_client_cert_t **cred,
  void *baton,
  const char *realm,
  svn_boolean_t may_save,
  apr_pool_t *pool);


/** Set @a *cred by prompting the user, allocating @a *cred in @a pool.
 * @a baton is an implementation-specific closure.  @a realm is a string
 * identifying the certificate, and can be used in the prompt string.
 *
 * If @a may_save is FALSE, the auth system does not allow the credentials
 * to be saved (to disk). A prompt function shall not ask the user if the
 * credentials shall be saved if @a may_save is FALSE. For example, a GUI
 * client with a remember password checkbox would grey out the checkbox if
 * @a may_save is FALSE.
 */
typedef svn_error_t *(*svn_auth_ssl_client_cert_pw_prompt_func_t)(
  svn_auth_cred_ssl_client_cert_pw_t **cred,
  void *baton,
  const char *realm,
  svn_boolean_t may_save,
  apr_pool_t *pool);

/** A type of callback function for asking whether storing a password to
 * disk in plaintext is allowed.
 *
 * In this callback, the client should ask the user whether storing
 * a password for the realm identified by @a realmstring to disk
 * in plaintext is allowed.
 *
 * The answer is returned in @a *may_save_plaintext.
 * @a baton is an implementation-specific closure.
 * All allocations should be done in @a pool.
 *
 * @since New in 1.6
 */
typedef svn_error_t *(*svn_auth_plaintext_prompt_func_t)(
  svn_boolean_t *may_save_plaintext,
  const char *realmstring,
  void *baton,
  apr_pool_t *pool);

/** A type of callback function for asking whether storing a passphrase to
 * disk in plaintext is allowed.
 *
 * In this callback, the client should ask the user whether storing
 * a passphrase for the realm identified by @a realmstring to disk
 * in plaintext is allowed.
 *
 * The answer is returned in @a *may_save_plaintext.
 * @a baton is an implementation-specific closure.
 * All allocations should be done in @a pool.
 *
 * @since New in 1.6
 */
typedef svn_error_t *(*svn_auth_plaintext_passphrase_prompt_func_t)(
  svn_boolean_t *may_save_plaintext,
  const char *realmstring,
  void *baton,
  apr_pool_t *pool);