1 files changed, 109 insertions, 0 deletions
diff --git a/nx-X11/lib/src/ListExt.c b/nx-X11/lib/src/ListExt.c
new file mode 100644
index 000000000..7fdf9932c
--- /dev/null
+++ b/nx-X11/lib/src/ListExt.c
@@ -0,0 +1,109 @@
+/*
+
+Copyright 1986, 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.
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include "Xlibint.h"
+#include <limits.h>
+
+char **XListExtensions(
+    register Display *dpy,
+    int *nextensions)	/* RETURN */
+{
+	xListExtensionsReply rep;
+	char **list = NULL;
+	char *ch = NULL;
+	char *chend;
+	int count = 0;
+	register unsigned i;
+	register int length;
+	_X_UNUSED register xReq *req;
+	unsigned long rlen = 0;
+
+	LockDisplay(dpy);
+	GetEmptyReq (ListExtensions, req);
+
+	if (! _XReply (dpy, (xReply *) &rep, 0, xFalse)) {
+	    UnlockDisplay(dpy);
+	    SyncHandle();
+	    return (char **) NULL;
+	}
+
+	if (rep.nExtensions) {
+	    list = Xmalloc (rep.nExtensions * sizeof (char *));
+	    if (rep.length > 0 && rep.length < (INT_MAX >> 2)) {
+		rlen = rep.length << 2;
+		ch = Xmalloc (rlen + 1);
+                /* +1 to leave room for last null-terminator */
+	    }
+
+	    if ((!list) || (!ch)) {
+		Xfree(list);
+		Xfree(ch);
+		_XEatDataWords(dpy, rep.length);
+		UnlockDisplay(dpy);
+		SyncHandle();
+		return (char **) NULL;
+	    }
+
+	    _XReadPad (dpy, ch, rlen);
+	    /*
+	     * unpack into null terminated strings.
+	     */
+	    chend = ch + (rlen + 1);
+	    length = *ch;
+	    for (i = 0; i < rep.nExtensions; i++) {
+		if (ch + length < chend) {
+		    list[i] = ch+1;  /* skip over length */
+		    ch += length + 1; /* find next length ... */
+		    if (ch <= chend) {
+			length = *ch;
+			*ch = '\0'; /* and replace with null-termination */
+			count++;
+		    } else {
+			list[i] = NULL;
+		    }
+		} else
+		    list[i] = NULL;
+	    }
+	}
+
+	*nextensions = count;
+	UnlockDisplay(dpy);
+	SyncHandle();
+	return (list);
+}
+
+int
+XFreeExtensionList (char **list)
+{
+	if (list != NULL) {
+	    Xfree (list[0]-1);
+	    Xfree (list);
+	}
+	return 1;
+}