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-rw-r--r--nx-X11/lib/X11/XlibAsync.c181
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diff --git a/nx-X11/lib/X11/XlibAsync.c b/nx-X11/lib/X11/XlibAsync.c
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+++ b/nx-X11/lib/X11/XlibAsync.c
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+/* $Xorg: XlibAsync.c,v 1.4 2001/02/09 02:03:38 xorgcvs Exp $ */
+/*
+
+Copyright 1992, 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 (c) 2001, 2007 NoMachine, http://www.nomachine.com/. */
+/* */
+/* NX-X11, NX protocol compression and NX extensions to this software */
+/* are copyright of NoMachine. Redistribution and use of the present */
+/* software is allowed according to terms specified in the file LICENSE */
+/* which comes in the source distribution. */
+/* */
+/* Check http://www.nomachine.com/licensing.html for applicability. */
+/* */
+/* NX and NoMachine are trademarks of NoMachine S.r.l. */
+/* */
+/* All rights reserved. */
+/* */
+/**************************************************************************/
+
+#define NEED_REPLIES
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <X11/Xlibint.h>
+#include <X11/Xos.h>
+
+/*ARGSUSED*/
+Bool
+_XAsyncErrorHandler(dpy, rep, buf, len, data)
+ register Display *dpy;
+ register xReply *rep;
+ char *buf;
+ int len;
+ XPointer data;
+{
+ register _XAsyncErrorState *state;
+
+ state = (_XAsyncErrorState *)data;
+ if (rep->generic.type == X_Error &&
+ (!state->error_code ||
+ rep->error.errorCode == state->error_code) &&
+ (!state->major_opcode ||
+ rep->error.majorCode == state->major_opcode) &&
+ (!state->minor_opcode ||
+ rep->error.minorCode == state->minor_opcode) &&
+ (!state->min_sequence_number ||
+ (state->min_sequence_number <= dpy->last_request_read)) &&
+ (!state->max_sequence_number ||
+ (state->max_sequence_number >= dpy->last_request_read))) {
+ state->last_error_received = rep->error.errorCode;
+ state->error_count++;
+ return True;
+ }
+ return False;
+}
+
+void _XDeqAsyncHandler(dpy, handler)
+ Display *dpy;
+ register _XAsyncHandler *handler;
+{
+ register _XAsyncHandler **prev;
+ register _XAsyncHandler *async;
+
+ for (prev = &dpy->async_handlers;
+ (async = *prev) && (async != handler);
+ prev = &async->next)
+ ;
+ if (async)
+ *prev = async->next;
+}
+
+char *
+_XGetAsyncReply(dpy, replbuf, rep, buf, len, extra, discard)
+ register Display *dpy;
+ register char *replbuf; /* data is read into this buffer */
+ register xReply *rep; /* value passed to calling handler */
+ char *buf; /* value passed to calling handler */
+ int len; /* value passed to calling handler */
+ int extra; /* extra words to read, ala _XReply */
+ Bool discard; /* discard after extra?, ala _XReply */
+{
+ if (extra == 0) {
+ if (discard && (rep->generic.length << 2) > len)
+ _XEatData (dpy, (rep->generic.length << 2) - len);
+ return (char *)rep;
+ }
+
+ if (extra <= rep->generic.length) {
+ int size = SIZEOF(xReply) + (extra << 2);
+ if (size > len) {
+ memcpy(replbuf, buf, len);
+ _XRead(dpy, replbuf + len, size - len);
+ buf = replbuf;
+ len = size;
+#ifdef MUSTCOPY
+ } else {
+ memcpy(replbuf, buf, size);
+ buf = replbuf;
+#endif
+ }
+
+ if (discard && rep->generic.length > extra &&
+ (rep->generic.length << 2) > len)
+ _XEatData (dpy, (rep->generic.length << 2) - len);
+
+ return buf;
+ }
+ /*
+ *if we get here, then extra > rep->generic.length--meaning we
+ * read a reply that's shorter than we expected. This is an
+ * error, but we still need to figure out how to handle it...
+ */
+ if ((rep->generic.length << 2) > len)
+ _XEatData (dpy, (rep->generic.length << 2) - len);
+#ifdef NX_TRANS_SOCKET
+
+ /*
+ * The original code has provision
+ * for returning already.
+ */
+
+#endif
+ _XIOError (dpy);
+ return (char *)rep;
+}
+
+void
+_XGetAsyncData(dpy, data, buf, len, skip, datalen, discardtotal)
+ Display *dpy;
+ char *data; /* data is read into this buffer */
+ char *buf; /* value passed to calling handler */
+ int len; /* value passed to calling handler */
+ int skip; /* number of bytes already read in previous
+ _XGetAsyncReply or _XGetAsyncData calls */
+ int datalen; /* size of data buffer in bytes */
+ int discardtotal; /* min. bytes to consume (after skip) */
+{
+ buf += skip;
+ len -= skip;
+ if (!data) {
+ if (datalen > len)
+ _XEatData(dpy, datalen - len);
+ } else if (datalen <= len) {
+ memcpy(data, buf, datalen);
+ } else {
+ memcpy(data, buf, len);
+ _XRead(dpy, data + len, datalen - len);
+ }
+ if (discardtotal > len) {
+ if (datalen > len)
+ len = datalen;
+ _XEatData(dpy, discardtotal - len);
+ }
+}