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/* cygserver.h
Copyright 2001, 2002, 2003, 2004 Red Hat Inc.
Written by Egor Duda <deo@logos-m.ru>
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#ifndef _CYGSERVER_H_
#define _CYGSERVER_H_
#ifdef __GNUC__
#define CYGSERVER_PACKED __attribute__ ((packed))
#else
#define CYGSERVER_PACKED
#endif
#define CYGWIN_SERVER_VERSION_MAJOR 1
#define CYGWIN_SERVER_VERSION_API 3
#define CYGWIN_SERVER_VERSION_MINOR 0
#define CYGWIN_SERVER_VERSION_PATCH 0
typedef enum {
CYGSERVER_UNKNOWN = 0,
CYGSERVER_OK,
CYGSERVER_UNAVAIL
} cygserver_states;
/*---------------------------------------------------------------------------*
* class client_request
*---------------------------------------------------------------------------*/
class transport_layer_base;
#ifndef __INSIDE_CYGWIN__
class process_cache;
#endif
class client_request
{
protected:
typedef enum {
CYGSERVER_REQUEST_INVALID,
CYGSERVER_REQUEST_GET_VERSION,
CYGSERVER_REQUEST_SHUTDOWN,
CYGSERVER_REQUEST_ATTACH_TTY,
CYGSERVER_REQUEST_MSG,
CYGSERVER_REQUEST_SEM,
CYGSERVER_REQUEST_SHM,
CYGSERVER_REQUEST_LAST
} request_code_t;
struct header_t
{
size_t msglen;
union
{
request_code_t request_code;
ssize_t error_code;
};
header_t () {};
header_t (request_code_t, size_t);
} CYGSERVER_PACKED;
public:
#ifndef __INSIDE_CYGWIN__
static void handle_request (transport_layer_base *, process_cache *);
#endif
client_request (request_code_t request_code,
void *buf = NULL,
size_t bufsiz = 0);
virtual ~client_request ();
request_code_t request_code () const { return _header.request_code; }
ssize_t error_code () const { return _header.error_code; };
void error_code (ssize_t error_code) { _header.error_code = error_code; };
size_t msglen () const { return _header.msglen; };
void msglen (size_t len) { _header.msglen = len; };
int make_request ();
protected:
virtual void send (transport_layer_base *);
private:
header_t _header;
void * const _buf;
const size_t _buflen;
#ifndef __INSIDE_CYGWIN__
void handle (transport_layer_base *, process_cache *);
virtual void serve (transport_layer_base *, process_cache *) = 0;
#endif
};
/*---------------------------------------------------------------------------*
* class client_request_get_version
*---------------------------------------------------------------------------*/
class client_request_get_version : public client_request
{
private:
struct request_get_version
{
DWORD major, api, minor, patch;
} CYGSERVER_PACKED;
public:
client_request_get_version ();
bool check_version () const;
private:
struct request_get_version version;
#ifndef __INSIDE_CYGWIN__
virtual void serve (transport_layer_base *, process_cache *);
#endif
};
/*---------------------------------------------------------------------------*
* class client_request_shutdown
*
* Nb. This whole class is only !__INSIDE_CYGWIN__ since it is used
* solely by cygserver itself.
*---------------------------------------------------------------------------*/
#ifndef __INSIDE_CYGWIN__
class client_request_shutdown : public client_request
{
public:
client_request_shutdown ();
private:
virtual void serve (transport_layer_base *, process_cache *);
};
#endif /* !__INSIDE_CYGWIN__ */
/*---------------------------------------------------------------------------*
* class client_request_attach_tty
*---------------------------------------------------------------------------*/
class client_request_attach_tty : public client_request
{
private:
struct request_attach_tty
{
DWORD pid, master_pid;
HANDLE from_master, to_master;
} CYGSERVER_PACKED;
public:
#ifdef __INSIDE_CYGWIN__
client_request_attach_tty (DWORD nmaster_pid,
HANDLE nfrom_master, HANDLE nto_master);
#else
client_request_attach_tty ();
#endif
HANDLE from_master () const { return req.from_master; };
HANDLE to_master () const { return req.to_master; };
protected:
virtual void send (transport_layer_base *);
private:
struct request_attach_tty req;
#ifndef __INSIDE_CYGWIN__
virtual void serve (transport_layer_base *, process_cache *);
#endif
};
#ifndef __INSIDE_CYGWIN__
extern PSID admininstrator_group_sid;
#endif
extern bool check_cygserver_available ();
extern void cygserver_init ();
#endif /* _CYGSERVER_H_ */
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