/* $XFree86: xc/programs/Xserver/os/osdep.h,v 3.21 2006/01/09 15:00:38 dawes Exp $ */
/***********************************************************

Copyright 1987, 1998  The Open Group

Permission to use, copy, modify, distribute, and sell this software and its
documentation for any purpose is hereby granted without fee, provided that
the above copyright notice appear in all copies and that both that
copyright notice and this permission notice appear in supporting
documentation.

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Except as contained in this notice, the name of The Open Group shall not be
used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from The Open Group.


Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.

                        All Rights Reserved

Permission to use, copy, modify, and distribute this software and its 
documentation for any purpose and without fee is hereby granted, 
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in 
supporting documentation, and that the name of Digital not be
used in advertising or publicity pertaining to distribution of the
software without specific, written prior permission.  

DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
SOFTWARE.

******************************************************************/

#ifndef _OSDEP_H_
#define _OSDEP_H_ 1

#define BOTIMEOUT 200 /* in milliseconds */
#define BUFSIZE 4096
#define BUFWATERMARK 8192
#ifndef MAXBUFSIZE
#define MAXBUFSIZE (1 << 22)
#endif

#include <X11/Xdmcp.h>

#ifndef sgi	    /* SGI defines OPEN_MAX in a useless way */
#ifndef X_NOT_POSIX
#ifdef _POSIX_SOURCE
#include <limits.h>
#else
#define _POSIX_SOURCE
#include <limits.h>
#undef _POSIX_SOURCE
#endif
#else /* X_NOT_POSIX */
#ifdef WIN32
#define _POSIX_
#include <limits.h>
#undef _POSIX_
#endif
#endif /* X_NOT_POSIX */
#endif

#ifdef __QNX__
#define NOFILES_MAX 256
#endif
#ifndef OPEN_MAX
#ifdef SVR4
#define OPEN_MAX 256
#else
#include <sys/param.h>
#ifndef OPEN_MAX
#if defined(NOFILE) && !defined(NOFILES_MAX)
#define OPEN_MAX NOFILE
#else
#ifndef __UNIXOS2__
#define OPEN_MAX NOFILES_MAX
#else
#define OPEN_MAX 256
#endif
#endif
#endif
#endif
#endif

#include <X11/Xpoll.h>

/*
 * MAXSOCKS is used only for initialising MaxClients when no other method
 * like sysconf(_SC_OPEN_MAX) is not supported.
 */

#if OPEN_MAX <= 256
#define MAXSOCKS (OPEN_MAX - 1)
#else
#define MAXSOCKS 256
#endif

/* MAXSELECT is the number of fds that select() can handle */
#define MAXSELECT (sizeof(fd_set) * NBBY)

#if !defined(hpux) && !defined(SVR4) && !defined(SYSV)
#define HAS_GETDTABLESIZE
#endif

#include <stddef.h>

typedef Bool (*ValidatorFunc)(ARRAY8Ptr Auth, ARRAY8Ptr Data, xdmOpCode packet_type);
typedef Bool (*GeneratorFunc)(ARRAY8Ptr Auth, ARRAY8Ptr Data, xdmOpCode packet_type);
typedef Bool (*AddAuthorFunc)(unsigned int name_length, char *name, unsigned int data_length, char *data);

typedef struct _connectionInput {
    struct _connectionInput *next;
    char *buffer;               /* contains current client input */
    char *bufptr;               /* pointer to current start of data */
    int  bufcnt;                /* count of bytes in buffer */
    int lenLastReq;
    int size;
} ConnectionInput, *ConnectionInputPtr;

typedef struct _connectionOutput {
    struct _connectionOutput *next;
    int size;
    unsigned char *buf;
    int count;
#ifdef LBX
    Bool nocompress;
#endif
} ConnectionOutput, *ConnectionOutputPtr;

#ifdef K5AUTH
typedef struct _k5_state {
    int		stageno;	/* current stage of auth protocol */
    pointer	srvcreds;	/* server credentials */
    pointer	srvname;	/* server principal name */
    pointer	ktname;		/* key table: principal-key pairs */
    pointer	skey;		/* session key */
}           k5_state;
#endif

#ifdef LBX
typedef struct _LbxProxy *OsProxyPtr;
#endif

struct _osComm;

#define AuthInitArgs void
typedef void (*AuthInitFunc) (AuthInitArgs);

#define AuthAddCArgs unsigned short data_length, char *data, XID id
typedef int (*AuthAddCFunc) (AuthAddCArgs);

#define AuthCheckArgs unsigned short data_length, char *data, ClientPtr client, char **reason
typedef XID (*AuthCheckFunc) (AuthCheckArgs);

#define AuthFromIDArgs XID id, unsigned short *data_lenp, char **datap
typedef int (*AuthFromIDFunc) (AuthFromIDArgs);

#define AuthGenCArgs unsigned data_length, char *data, XID id, unsigned *data_length_return, char **data_return
typedef XID (*AuthGenCFunc) (AuthGenCArgs);

#define AuthRemCArgs unsigned short data_length, char *data
typedef int (*AuthRemCFunc) (AuthRemCArgs);

#define AuthRstCArgs void
typedef int (*AuthRstCFunc) (AuthRstCArgs);

#define AuthToIDArgs unsigned short data_length, char *data
typedef XID (*AuthToIDFunc) (AuthToIDArgs);

typedef void (*OsCloseFunc)(ClientPtr);

typedef int (*OsFlushFunc)(ClientPtr who, struct _osComm * oc, char* extraBuf, int extraCount);

typedef struct _osComm {
    int fd;
    ConnectionInputPtr input;
    ConnectionOutputPtr output;
    XID	auth_id;		/* authorization id */
#ifdef K5AUTH
    k5_state	authstate;	/* state of setup auth conversation */
#endif
    CARD32 conn_time;		/* timestamp if not established, else 0  */
    struct _XtransConnInfo *trans_conn; /* transport connection object */
#ifdef LBX
    OsProxyPtr proxy;
    ConnectionInputPtr largereq;
    OsCloseFunc Close;
    OsFlushFunc Flush;
#endif
} OsCommRec, *OsCommPtr;

#ifdef LBX
#define FlushClient(who, oc, extraBuf, extraCount) \
    (*(oc)->Flush)(who, oc, extraBuf, extraCount)
extern int StandardFlushClient(
    ClientPtr /*who*/,
    OsCommPtr /*oc*/,
    char* /*extraBuf*/,
    int /*extraCount*/
);
extern int LbxFlushClient(ClientPtr /*who*/, OsCommPtr /*oc*/, 
    char */*extraBuf*/, int /*extraCount*/);
#else
extern int FlushClient(
    ClientPtr /*who*/,
    OsCommPtr /*oc*/,
    char* /*extraBuf*/,
    int /*extraCount*/
);
#endif

extern void FreeOsBuffers(
    OsCommPtr /*oc*/
);

#include "dix.h"

extern ConnectionInputPtr AllocateInputBuffer(void);

extern ConnectionOutputPtr AllocateOutputBuffer(void);

extern fd_set AllSockets;
extern fd_set AllClients;
extern fd_set LastSelectMask;
extern fd_set WellKnownConnections;
extern fd_set EnabledDevices;
extern fd_set ClientsWithInput;
extern fd_set ClientsWriteBlocked;
extern fd_set OutputPending;
extern fd_set IgnoredClientsWithInput;
 
extern int *ConnectionTranslation;
 
extern Bool NewOutputPending;
extern Bool AnyClientsWriteBlocked;
extern Bool CriticalOutputPending;

extern int timesThisConnection;
extern ConnectionInputPtr FreeInputs;
extern ConnectionOutputPtr FreeOutputs;
extern OsCommPtr AvailableInput;

extern WorkQueuePtr workQueue;

/* added by raphael */
#define ffs mffs
extern int mffs(fd_mask);

/* in auth.c */
extern void GenerateRandomData (int len, char *buf);

/* in mitauth.c */
extern XID  MitCheckCookie    (AuthCheckArgs);
extern XID  MitGenerateCookie (AuthGenCArgs);
extern XID  MitToID           (AuthToIDArgs);
extern int  MitAddCookie      (AuthAddCArgs);
extern int  MitFromID         (AuthFromIDArgs);
extern int  MitRemoveCookie   (AuthRemCArgs);
extern int  MitResetCookie    (AuthRstCArgs);

/* in xdmauth.c */
#ifdef HASXDMAUTH
extern XID  XdmCheckCookie    (AuthCheckArgs);
extern XID  XdmToID           (AuthToIDArgs);
extern int  XdmAddCookie      (AuthAddCArgs);
extern int  XdmFromID         (AuthFromIDArgs);
extern int  XdmRemoveCookie   (AuthRemCArgs);
extern int  XdmResetCookie    (AuthRstCArgs);
#endif

/* in rpcauth.c */
#ifdef SECURE_RPC
extern void SecureRPCInit     (AuthInitArgs);
extern XID  SecureRPCCheck    (AuthCheckArgs);
extern XID  SecureRPCToID     (AuthToIDArgs);
extern int  SecureRPCAdd      (AuthAddCArgs);
extern int  SecureRPCFromID   (AuthFromIDArgs);
extern int  SecureRPCRemove   (AuthRemCArgs);
extern int  SecureRPCReset    (AuthRstCArgs);
#endif

/* in k5auth.c */
#ifdef K5AUTH
extern XID  K5Check           (AuthCheckArgs);
extern XID  K5ToID            (AuthToIDArgs);
extern int  K5Add             (AuthAddCArgs);
extern int  K5FromID          (AuthFromIDArgs);
extern int  K5Remove          (AuthRemCArgs);
extern int  K5Reset           (AuthRstCArgs);
#endif

/* in secauth.c */
extern XID AuthSecurityCheck (AuthCheckArgs);

/* in xdmcp.c  & xdmauth.c */
extern void XdmcpUseMsg (void);
extern int XdmcpOptions(int argc, char **argv, int i);
extern void XdmcpSetAuthentication (ARRAY8Ptr name);
extern void XdmcpRegisterConnection (
    int	    type,
    char    *address,
    int	    addrlen);
extern void XdmcpRegisterAuthorizations (void);
extern void XdmcpRegisterAuthorization (char *name, int namelen);
extern void XdmcpRegisterDisplayClass (char *name, int length);
extern void XdmcpInit (void);
extern void XdmcpReset (void);
extern void XdmcpOpenDisplay(int sock);
extern void XdmcpCloseDisplay(int sock);
extern void XdmcpRegisterAuthentication (
    char    *name,
    int	    namelen,
    char    *data,
    int	    datalen,
    ValidatorFunc Validator,
    GeneratorFunc Generator,
    AddAuthorFunc AddAuth);
extern int XdmcpCheckAuthentication (ARRAY8Ptr Name, ARRAY8Ptr Data,
				     xdmOpCode packet_type);
extern int XdmcpAddAuthorization (ARRAY8Ptr name, ARRAY8Ptr data);

struct sockaddr_in;
extern void XdmcpRegisterBroadcastAddress (struct sockaddr_in *addr);

extern void XdmAuthenticationInit (char *cookie, int cookie_length);

#endif /* _OSDEP_H_ */
