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

Copyright 1993, 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.

Author: Ralph Mor, X Consortium

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

#ifdef WIN32

#define _WILLWINSOCK_

#endif

#ifdef HAVE_CONFIG_H

#include <config.h>

#endif

#include <X11/ICE/ICElib.h>

#include "ICElibint.h"

#include <X11/Xtrans/Xtrans.h>

#include <stdio.h>

#ifdef WIN32

#include <X11/Xwinsock.h>

#include <X11/Xw32defs.h>

#endif

/*

 * scratch buffer

 */

char *

IceAllocScratch (

	IceConn		iceConn,

	unsigned long	size

)

{

    if (!iceConn->scratch || size > iceConn->scratch_size)

    {

	if (iceConn->scratch)

	    free (iceConn->scratch);

	iceConn->scratch = malloc (size);

	iceConn->scratch_size = size;

    }

    return (iceConn->scratch);

}

/*

 * Output/Input buffer functions

 */

int

IceFlush (

	IceConn iceConn

)

{

    _IceWrite (iceConn,

	(unsigned long) (iceConn->outbufptr - iceConn->outbuf),

	iceConn->outbuf);

    iceConn->outbufptr = iceConn->outbuf;

    return 1;

}

int

IceGetOutBufSize (

	IceConn iceConn

)

{

    return (iceConn->outbufmax - iceConn->outbuf);

}

int

IceGetInBufSize (

	IceConn iceConn

)

{

    return (iceConn->inbufmax - iceConn->inbuf);

}

/*

 * informational functions

 */

IceConnectStatus

IceConnectionStatus (

	IceConn iceConn

)

{

    return (iceConn->connection_status);

}

char *

IceVendor (

	IceConn iceConn

)

{

    return strdup(iceConn->vendor);

}

char *

IceRelease (

	IceConn iceConn

)

{

    return strdup(iceConn->release);

}

int

IceProtocolVersion (

	IceConn iceConn

)

{

    return (_IceVersions[iceConn->my_ice_version_index].major_version);

}

int

IceProtocolRevision (

	IceConn iceConn

)

{

    return (_IceVersions[iceConn->my_ice_version_index].minor_version);

}

int

IceConnectionNumber (

	IceConn iceConn

)

{

    return (_IceTransGetConnectionNumber (iceConn->trans_conn));

}

char *

IceConnectionString (

	IceConn iceConn

)

{

    if (iceConn->connection_string)

    {

	return strdup(iceConn->connection_string);

    }

    else

	return (NULL);

}

unsigned long

IceLastSentSequenceNumber (

	IceConn iceConn

)

{

    return (iceConn->send_sequence);

}

unsigned long

IceLastReceivedSequenceNumber (

	IceConn iceConn

)

{

    return (iceConn->receive_sequence);

}

Bool

IceSwapping (

	IceConn iceConn

)

{

    return (iceConn->swap);

}

/*

 * Read "n" bytes from a connection.

 *

 * Return Status 0 if we detected an EXPECTED closed connection.

 *

 */

Status

_IceRead (

	register IceConn iceConn,

	unsigned long	 nbytes,

	register char	 *ptr

)

{

    register unsigned long nleft;

    nleft = nbytes;

    while (nleft > 0)

    {

	int nread;

	if (iceConn->io_ok)

	    nread = _IceTransRead (iceConn->trans_conn, ptr, (int) nleft);

	else

	    return (1);

	if (nread <= 0)

	{

#ifdef WIN32

	    errno = WSAGetLastError();

#endif

	    if (iceConn->want_to_close)

	    {

		/*

		 * We sent a WantToClose message and now we detected that

		 * the other side closed the connection.

		 */

		_IceConnectionClosed (iceConn);	    /* invoke watch procs */

		return (0);

	    }

	    else

	    {

		/*

		 * Fatal IO error.  First notify each protocol's IceIOErrorProc

		 * callback, then invoke the application IO error handler.

		 */

		iceConn->io_ok = False;

		if (iceConn->connection_status == IceConnectPending)

		{

		    /*

		     * Don't invoke IO error handler if we are in the

		     * middle of a connection setup.

		     */

		    return (1);

		}

		if (iceConn->process_msg_info)

		{

		    int i;

		    for (i = iceConn->his_min_opcode;

			i <= iceConn->his_max_opcode; i++)

		    {

			_IceProcessMsgInfo *process;

			process = &iceConn->process_msg_info[

			    i - iceConn->his_min_opcode];

			if ((process != NULL) && process->in_use)

			{

			    IceIOErrorProc IOErrProc = process->accept_flag ?

			      process->protocol->accept_client->io_error_proc :

			      process->protocol->orig_client->io_error_proc;

			    if (IOErrProc)

				(*IOErrProc) (iceConn);

			}

		    }

		}

		(*_IceIOErrorHandler) (iceConn);

		return (1);

	    }

	}

	nleft -= nread;

	ptr   += nread;

    }

    return (1);

}

/*

 * If we read a message header with a bad major or minor opcode,

 * we need to advance to the end of the message.  This way, the next

 * message can be processed correctly.

 */

void

_IceReadSkip (

	register IceConn	iceConn,

	register unsigned long	nbytes

)

{

    char temp[512];

    while (nbytes > 0)

    {

	unsigned long rbytes = nbytes > 512 ? 512 : nbytes;

	_IceRead (iceConn, rbytes, temp);

	nbytes -= rbytes;

    }

}

/*

 * Write "n" bytes to a connection.

 */

void

_IceWrite (

	register IceConn iceConn,

	unsigned long	 nbytes,

	register char	 *ptr

)

{

    register unsigned long nleft;

    nleft = nbytes;

    while (nleft > 0)

    {

	int nwritten;

	if (iceConn->io_ok)

	    nwritten = _IceTransWrite (iceConn->trans_conn, ptr, (int) nleft);

	else

	    return;

	if (nwritten <= 0)

	{

#ifdef WIN32

	    errno = WSAGetLastError();

#endif

	    /*

	     * Fatal IO error.  First notify each protocol's IceIOErrorProc

	     * callback, then invoke the application IO error handler.

	     */

	    iceConn->io_ok = False;

	    if (iceConn->connection_status == IceConnectPending)

	    {

		/*

		 * Don't invoke IO error handler if we are in the

		 * middle of a connection setup.

		 */

		return;

	    }

	    if (iceConn->process_msg_info)

	    {

		int i;

		for (i = iceConn->his_min_opcode;

		     i <= iceConn->his_max_opcode; i++)

		{

		    _IceProcessMsgInfo *process;

		    process = &iceConn->process_msg_info[

			i - iceConn->his_min_opcode];

		    if (process->in_use)

		    {

			IceIOErrorProc IOErrProc = process->accept_flag ?

			    process->protocol->accept_client->io_error_proc :

			    process->protocol->orig_client->io_error_proc;

			if (IOErrProc)

			    (*IOErrProc) (iceConn);

		    }

		}

	    }

	    (*_IceIOErrorHandler) (iceConn);

	    return;

	}

	nleft -= nwritten;

	ptr   += nwritten;

    }

}

void

_IceAddOpcodeMapping (

	IceConn	iceConn,

	int 	hisOpcode,

	int 	myOpcode

)

{

    if (hisOpcode <= 0 || hisOpcode > 255)

    {

	return;

    }

    else if (iceConn->process_msg_info == NULL)

    {

	iceConn->process_msg_info = malloc (sizeof (_IceProcessMsgInfo));

	iceConn->his_min_opcode = iceConn->his_max_opcode = hisOpcode;

    }

    else if (hisOpcode < iceConn->his_min_opcode)

    {

	_IceProcessMsgInfo *oldVec = iceConn->process_msg_info;

	int oldsize = iceConn->his_max_opcode - iceConn->his_min_opcode + 1;

	int newsize = iceConn->his_max_opcode - hisOpcode + 1;

	int i;

	iceConn->process_msg_info = malloc (

	    newsize * sizeof (_IceProcessMsgInfo));

	memcpy (&iceConn->process_msg_info[

	    iceConn->his_min_opcode - hisOpcode], oldVec,

	    oldsize * sizeof (_IceProcessMsgInfo));

	free (oldVec);

	for (i = hisOpcode + 1; i < iceConn->his_min_opcode; i++)

	{

	    iceConn->process_msg_info[i -

		iceConn->his_min_opcode].in_use = False;

	    iceConn->process_msg_info[i -

		iceConn->his_min_opcode].protocol = NULL;

	}

	iceConn->his_min_opcode = hisOpcode;

    }

    else if (hisOpcode > iceConn->his_max_opcode)

    {

	_IceProcessMsgInfo *oldVec = iceConn->process_msg_info;

	int oldsize = iceConn->his_max_opcode - iceConn->his_min_opcode + 1;

	int newsize = hisOpcode - iceConn->his_min_opcode + 1;

	int i;

	iceConn->process_msg_info = malloc (

	    newsize * sizeof (_IceProcessMsgInfo));

	memcpy (iceConn->process_msg_info, oldVec,

	    oldsize * sizeof (_IceProcessMsgInfo));

	free (oldVec);

	for (i = iceConn->his_max_opcode + 1; i < hisOpcode; i++)

	{

	    iceConn->process_msg_info[i -

		iceConn->his_min_opcode].in_use = False;

	    iceConn->process_msg_info[i -

		iceConn->his_min_opcode].protocol = NULL;

	}

	iceConn->his_max_opcode = hisOpcode;

    }

    iceConn->process_msg_info[hisOpcode -

	iceConn->his_min_opcode].in_use = True;

    iceConn->process_msg_info[hisOpcode -

	iceConn->his_min_opcode].my_opcode = myOpcode;

    iceConn->process_msg_info[hisOpcode -

	iceConn->his_min_opcode].protocol = &_IceProtocols[myOpcode - 1];

}

char *

IceGetPeerName (IceConn iceConn)

{

    return (_IceTransGetPeerNetworkId (iceConn->trans_conn));

}

char *

_IceGetPeerName (IceConn iceConn)

{

    return (IceGetPeerName(iceConn));

}