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/*
* uw IPC definitions
*
* Copyright 1986 by John D. Bruner. All rights reserved. Permission to
* copy this program is given provided that the copy is not sold and that
* this copyright notice is included.
*/
#ifndef UW_IPC
#define UW_IPC
/*
* UW accepts network connections in both the UNIX domain and the
* Internet domain. UNIX domain datagrams are used by processes on
* the local machine to create new windows and to change the value
* of window parameters (window options). TCP (Internet stream)
* connections are used by local and non-local processes which wish
* to handle their own host activity (e.g. pseudo-terminal handling).
*
* Some of the definitions in this file duplicate definitions in the
* UW server source code, because this file is also intended for use
* with the UW library.
*
* The code which performs byte-order conversions knows the size of the
* types defined in this file (since there is no typeof() operator).
*/
#define UIPC_ENV "UW_UIPC" /* Unix-domain port environment var */
#define INET_ENV "UW_INET" /* Internet-domain port environ var */
typedef long uwid_t; /* unique window identifier */
typedef short uwcmd_t; /* commands: */
#define UWC_NEWW 0 /* create new window */
#define UWC_NEWT 1 /* create new tty window */
#define UWC_STATUS 2 /* creation status message */
#define UWC_KILLW 3 /* kill existing window */
#define UWC_OPTION 4 /* act upon window option */
typedef short uwoptcmd_t; /* option subcommands: */
#define UWOC_SET 0 /* set value of option */
#define UWOC_ASK 2 /* ask for value of option */
#define UWOC_DO 4 /* report changes in value */
#define UWOC_DONT 5 /* don't report changes */
#define UWOC_WILL 6 /* will report changes */
#define UWOC_WONT 7 /* won't report changes */
typedef short uwtype_t; /* window type (see also uw_win.h): */
#define UWT_ADM31 0 /* ADM-31 */
#define UWT_VT52 1 /* VT-52 */
#define UWT_ANSI 2 /* ANSI */
#define UWT_TEK4010 3 /* Tektronix 4010 */
#define UWT_FTP 4 /* file transfer */
#define UWT_PRINT 5 /* output to Macintosh printer */
#define UWT_PLOT 6 /* plot window */
typedef short uwopt_t; /* window option number: */
#define UWOP_VIS 1 /* visibility */
#define UWOP_TYPE 2 /* window type */
#define UWOP_POS 3 /* window position */
#define UWOP_TITLE 4 /* window title */
#define UWOP_WSIZE 5 /* window size (in bits) */
#define UWOP_TSIZE 8 /* terminal size (row,col) */
#define UWOP_TFONTSZ 9 /* small/large font size */
#define UWOP_TCLIPB 10 /* clipboard/mouse encoding */
#define UWOP_TBELL 11 /* audible, visual bell */
#define UWOP_TCURS 12 /* cursor shape */
union uwoptval {
unsigned char uwov_1bit;
unsigned char uwov_6bit;
unsigned short uwov_12bit;
struct {
unsigned short v,h;
} uwov_point;
char uwov_string[256];
};
/*
* UWC_NEWW: create a new window
*
* This command is only valid when it is sent as the first message on an
* Internet stream socket. The remote port is the data fd for the window.
* If a control fd is desired, its port number is contained in "uwnt_ctlport"
*/
struct uwneww {
uwid_t uwnw_id; /* unique window identifier */
uwtype_t uwnw_type; /* window type */
short uwnw_ctlport; /* port number of control fd */
};
/*
* UWC_NEWT: create a new tty window
*
* This command is only valid when it is sent as a datagram to the Unix-domain
* socket. It must be accompanied by an access right (file descriptor) for
* the master side of a pty. The server takes over all responsibilities for
* this window. "uwnt_pty" is variable-length.
*/
struct uwnewt {
uwid_t uwnt_id; /* unique window identifier */
uwtype_t uwnt_type; /* window type */
char uwnt_pty[1]; /* name of associated pty */
};
/*
* UWC_STATUS: status report for UWC_NEWW
*
* This type of packet is sent by the server to the data fd in response
* to a UWC_NEWW. It specifies whether the window was successfully
* created and what unique ID was assigned.
*/
struct uwstatus {
uwid_t uwst_id; /* unique window identifier */
short uwst_err; /* error status */
short uwst_errno; /* UNIX error code (see <errno.h>) */
};
/*
* UWC_KILLW: kill the window
*
* This command may be sent to either the Unix-domain socket or the control
* file descriptor of an external window. In the latter case, "uwkw_id"
* must match the ID of the window associated with the file descriptor.
*/
struct uwkillw {
uwid_t uwkw_id; /* unique window identifier */
};
/*
* UWC_OPTION: act upon window option
*
* This command may be sent to either the Unix-domain socket or the control
* file descriptor of an external window. In the former case, only the
* UWOC_SET command is processed.
*/
struct uwoption {
uwid_t uwop_id; /* unique window identifier */
uwopt_t uwop_opt; /* option number */
uwoptcmd_t uwop_cmd; /* option subcommand */
union uwoptval uwop_val; /* option value (for UWOC_SET) */
};
struct uwipc {
unsigned short uwip_len; /* length of this message */
uwcmd_t uwip_cmd; /* command (message type) */
union {
struct uwneww uwipu_neww;
struct uwnewt uwipu_newt;
struct uwstatus uwipu_status;
struct uwkillw uwipu_killw;
struct uwoption uwipu_option;
} uwip_u;
#define uwip_neww uwip_u.uwipu_neww
#define uwip_newt uwip_u.uwipu_newt
#define uwip_status uwip_u.uwipu_status
#define uwip_killw uwip_u.uwipu_killw
#define uwip_option uwip_u.uwipu_option
};
#endif
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