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+/* $Xorg: ICEmsg.h,v 1.4 2001/02/09 02:03:26 xorgcvs Exp $ */
+/******************************************************************************
+
+
+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
+******************************************************************************/
+/* $XFree86: xc/lib/ICE/ICEmsg.h,v 1.4 2001/12/20 19:40:59 tsi Exp $ */
+
+#ifndef _ICEMSG_H_
+#define _ICEMSG_H_
+
+#include <X11/Xfuncproto.h>
+
+#include <X11/ICE/ICEconn.h>
+
+_XFUNCPROTOBEGIN
+
+/*
+ * Function prototypes for internal ICElib functions
+ */
+
+extern Status _IceRead (
+ IceConn /* iceConn */,
+ unsigned long /* nbytes */,
+ char * /* ptr */
+);
+
+extern void _IceReadSkip (
+ IceConn /* iceConn */,
+ unsigned long /* nbytes */
+);
+
+extern void _IceWrite (
+ IceConn /* iceConn */,
+ unsigned long /* nbytes */,
+ char * /* ptr */
+);
+
+
+extern void _IceErrorBadMinor (
+ IceConn /* iceConn */,
+ int /* majorOpcode */,
+ int /* offendingMinor */,
+ int /* severity */
+);
+
+extern void _IceErrorBadState (
+ IceConn /* iceConn */,
+ int /* majorOpcode */,
+ int /* offendingMinor */,
+ int /* severity */
+);
+
+extern void _IceErrorBadLength (
+ IceConn /* iceConn */,
+ int /* majorOpcode */,
+ int /* offendingMinor */,
+ int /* severity */
+);
+
+extern void _IceErrorBadValue (
+ IceConn /* iceConn */,
+ int /* majorOpcode */,
+ int /* offendingMinor */,
+ int /* offset */,
+ int /* length */,
+ IcePointer /* value */
+);
+
+
+/*
+ * Macro to check if IO operations are valid on an ICE connection.
+ */
+
+#define IceValidIO(_iceConn) _iceConn->io_ok
+
+
+/*
+ * Macros for writing messages.
+ */
+
+#define IceGetHeader(_iceConn, _major, _minor, _headerSize, _msgType, _pMsg) \
+ if ((_iceConn->outbufptr + _headerSize) > _iceConn->outbufmax) \
+ IceFlush (_iceConn); \
+ _pMsg = (_msgType *) _iceConn->outbufptr; \
+ _pMsg->majorOpcode = _major; \
+ _pMsg->minorOpcode = _minor; \
+ _pMsg->length = (_headerSize - SIZEOF (iceMsg)) >> 3; \
+ _iceConn->outbufptr += _headerSize; \
+ _iceConn->send_sequence++
+
+#define IceGetHeaderExtra(_iceConn, _major, _minor, _headerSize, _extra, _msgType, _pMsg, _pData) \
+ if ((_iceConn->outbufptr + \
+ _headerSize + ((_extra) << 3)) > _iceConn->outbufmax) \
+ IceFlush (_iceConn); \
+ _pMsg = (_msgType *) _iceConn->outbufptr; \
+ if ((_iceConn->outbufptr + \
+ _headerSize + ((_extra) << 3)) <= _iceConn->outbufmax) \
+ _pData = (char *) _pMsg + _headerSize; \
+ else \
+ _pData = NULL; \
+ _pMsg->majorOpcode = _major; \
+ _pMsg->minorOpcode = _minor; \
+ _pMsg->length = ((_headerSize - SIZEOF (iceMsg)) >> 3) + (_extra); \
+ _iceConn->outbufptr += (_headerSize + ((_extra) << 3)); \
+ _iceConn->send_sequence++
+
+#define IceSimpleMessage(_iceConn, _major, _minor) \
+{ \
+ iceMsg *_pMsg; \
+ IceGetHeader (_iceConn, _major, _minor, SIZEOF (iceMsg), iceMsg, _pMsg); \
+}
+
+#define IceErrorHeader(_iceConn, _offendingMajorOpcode, _offendingMinorOpcode, _offendingSequenceNum, _severity, _errorClass, _dataLength) \
+{ \
+ iceErrorMsg *_pMsg; \
+\
+ IceGetHeader (_iceConn, _offendingMajorOpcode, ICE_Error, \
+ SIZEOF (iceErrorMsg), iceErrorMsg, _pMsg); \
+ _pMsg->length += (_dataLength); \
+ _pMsg->offendingMinorOpcode = _offendingMinorOpcode; \
+ _pMsg->severity = _severity; \
+ _pMsg->offendingSequenceNum = _offendingSequenceNum; \
+ _pMsg->errorClass = _errorClass; \
+}
+
+
+/*
+ * Write data into the ICE output buffer.
+ */
+
+#define IceWriteData(_iceConn, _bytes, _data) \
+{ \
+ if ((_iceConn->outbufptr + (_bytes)) > _iceConn->outbufmax) \
+ { \
+ IceFlush (_iceConn); \
+ _IceWrite (_iceConn, (unsigned long) (_bytes), _data); \
+ } \
+ else \
+ { \
+ memcpy (_iceConn->outbufptr, _data, _bytes); \
+ _iceConn->outbufptr += (_bytes); \
+ } \
+}
+
+#ifndef WORD64
+
+#define IceWriteData16(_iceConn, _bytes, _data) \
+ IceWriteData (_iceConn, _bytes, (char *) _data)
+
+#define IceWriteData32(_iceConn, _bytes, _data) \
+ IceWriteData (_iceConn, _bytes, (char *) _data)
+
+#else /* WORD64 */
+
+/* IceWriteData16 and IceWriteData32 defined in misc.c for WORD64 */
+
+#endif /* WORD64 */
+
+
+/*
+ * The IceSendData macro bypasses copying the data to the
+ * ICE connection buffer and sends the data directly. If necessary,
+ * the ICE connection buffer is first flushed.
+ */
+
+#define IceSendData(_iceConn, _bytes, _data) \
+{ \
+ if (_iceConn->outbufptr > _iceConn->outbuf) \
+ IceFlush (_iceConn); \
+ _IceWrite (_iceConn, (unsigned long) (_bytes), _data); \
+}
+
+
+/*
+ * Write pad bytes. Used to force 32 or 64 bit alignment.
+ * A maxium of 7 pad bytes can be specified.
+ */
+
+#define IceWritePad(_iceConn, _bytes) \
+{ \
+ if ((_iceConn->outbufptr + (_bytes)) > _iceConn->outbufmax) \
+ { \
+ char _dummy[7]; \
+ IceFlush (_iceConn); \
+ _IceWrite (_iceConn, (unsigned long) (_bytes), _dummy); \
+ } \
+ else \
+ { \
+ _iceConn->outbufptr += (_bytes); \
+ } \
+}
+
+
+/*
+ * Macros for reading messages.
+ */
+
+#define IceReadCompleteMessage(_iceConn, _headerSize, _msgType, _pMsg, _pData)\
+{ \
+ unsigned long _bytes; \
+ IceReadMessageHeader (_iceConn, _headerSize, _msgType, _pMsg); \
+ _bytes = (_pMsg->length << 3) - (_headerSize - SIZEOF (iceMsg)); \
+ if ((_iceConn->inbufmax - _iceConn->inbufptr) >= _bytes) \
+ { \
+ _IceRead (_iceConn, _bytes, _iceConn->inbufptr); \
+ _pData = _iceConn->inbufptr; \
+ _iceConn->inbufptr += _bytes; \
+ } \
+ else \
+ { \
+ _pData = (char *) malloc ((unsigned) _bytes); \
+ if (_pData) \
+ _IceRead (_iceConn, _bytes, _pData); \
+ else \
+ _IceReadSkip (_iceConn, _bytes); \
+ } \
+}
+
+#define IceDisposeCompleteMessage(_iceConn, _pData) \
+ if ((char *) _pData < _iceConn->inbuf || \
+ (char *) _pData >= _iceConn->inbufmax) \
+ free ((char *) _pData);
+
+
+#define IceReadSimpleMessage(_iceConn, _msgType, _pMsg) \
+ _pMsg = (_msgType *) (_iceConn->inbuf);
+
+#define IceReadMessageHeader(_iceConn, _headerSize, _msgType, _pMsg) \
+{ \
+ _IceRead (_iceConn, \
+ (unsigned long) (_headerSize - SIZEOF (iceMsg)), \
+ _iceConn->inbufptr); \
+ _pMsg = (_msgType *) (_iceConn->inbuf); \
+ _iceConn->inbufptr += (_headerSize - SIZEOF (iceMsg)); \
+}
+
+#define IceReadData(_iceConn, _bytes, _pData) \
+ _IceRead (_iceConn, (unsigned long) (_bytes), (char *) _pData); \
+
+#ifndef WORD64
+
+#define IceReadData16(_iceConn, _swap, _bytes, _pData) \
+{ \
+ _IceRead (_iceConn, (unsigned long) (_bytes), (char *) _pData); \
+}
+
+#define IceReadData32(_iceConn, _swap, _bytes, _pData) \
+{ \
+ _IceRead (_iceConn, (unsigned long) (_bytes), (char *) _pData); \
+}
+
+#else /* WORD64 */
+
+/* IceReadData16 and IceReadData32 defined in misc.c for WORD64 */
+
+#endif /* WORD64 */
+
+
+/*
+ * Read pad bytes (for 32 or 64 bit alignment).
+ * A maxium of 7 pad bytes can be specified.
+ */
+
+#define IceReadPad(_iceConn, _bytes) \
+{ \
+ char _dummy[7]; \
+ _IceRead (_iceConn, (unsigned long) (_bytes), _dummy); \
+}
+
+_XFUNCPROTOEND
+
+#endif /* _ICEMSG_H_ */
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