d_t *fdarray, int fdarraysize);

const char *assuan_get_command_name (assuan_context_t ctx);

FILE *assuan_get_data_fp (assuan_context_t ctx);
gpg_error_t assuan_set_okay_line (assuan_context_t ctx, const char *line);
gpg_error_t assuan_write_status (assuan_context_t ctx,
				 const char *keyword, const char *text);

/* Negotiate a file descriptor.  If LINE contains "FD=N", returns N
 * assuming a local file descriptor.  If LINE contains "FD" reads a
 * file descriptor via CTX and stores it in *RDF (the CTX must be
 * capable of passing file descriptors).  Under Windows the returned
 * FD is a libc-type one.  */
gpg_error_t assuan_command_parse_fd (assuan_context_t ctx, char *line,
                                        assuan_fd_t *rfd);


/*-- assuan-listen.c --*/
gpg_error_t assuan_set_hello_line (assuan_context_t ctx, const char *line);
gpg_error_t assuan_accept (assuan_context_t ctx);
assuan_fd_t assuan_get_input_fd (assuan_context_t ctx);
assuan_fd_t assuan_get_output_fd (assuan_context_t ctx);
gpg_error_t assuan_close_input_fd (assuan_context_t ctx);
gpg_error_t assuan_close_output_fd (assuan_context_t ctx);


/*-- assuan-pipe-server.c --*/
gpg_error_t assuan_init_pipe_server (assuan_context_t ctx,
				     assuan_fd_t filedes[2]);

/*-- assuan-socket-server.c --*/
#define ASSUAN_SOCKET_SERVER_FDPASSING 1
#define ASSUAN_SOCKET_SERVER_ACCEPTED 2
gpg_error_t assuan_init_socket_server (assuan_context_t ctx,
				       assuan_fd_t listen_fd,
				       unsigned int flags);
void assuan_set_sock_nonce (assuan_context_t ctx, assuan_sock_nonce_t *nonce);

/*-- assuan-pipe-connect.c --*/
#define ASSUAN_PIPE_CONNECT_FDPASSING 1
#define ASSUAN_PIPE_CONNECT_DETACHED 128
gpg_error_t assuan_pipe_connect (assuan_context_t ctx,
				 const char *name,
				 const char *argv[],
				 assuan_fd_t *fd_child_list,
				 void (*atfork) (void *, int),
				 void *atforkvalue,
				 unsigned int flags);

/*-- assuan-socket-connect.c --*/
#define ASSUAN_SOCKET_CONNECT_FDPASSING 1
gpg_error_t assuan_socket_connect (assuan_context_t ctx, const char *name,
				   pid_t server_pid, unsigned int flags);

/*-- assuan-socket-connect.c --*/
gpg_error_t assuan_socket_connect_fd (assuan_context_t ctx, assuan_fd_t fd,
				   unsigned int flags);

/*-- context.c --*/
pid_t assuan_get_pid (assuan_context_t ctx);
struct _assuan_peercred
{
#ifdef _WIN32
  /* Empty struct not allowed on some compilers, so, put this (not valid).  */
  pid_t pid;
#else
  pid_t pid;
  uid_t uid;
  gid_t gid;
#endif
};
typedef struct _assuan_peercred *assuan_peercred_t;

gpg_error_t assuan_get_peercred (assuan_context_t ctx,
				 assuan_peercred_t *peercred);