1 files changed, 128 insertions, 0 deletions
diff --git a/Xi/xiqueryversion.c b/Xi/xiqueryversion.c
new file mode 100644
index 000000000..ae63297da
--- /dev/null
+++ b/Xi/xiqueryversion.c
@@ -0,0 +1,128 @@
+/*
+ * Copyright © 2009 Red Hat, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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.
+ *
+ * Authors: Peter Hutterer
+ *
+ */
+
+/**
+ * @file xiqueryversion.c
+ * Protocol handling for the XIQueryVersion request/reply.
+ */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+
+#include "inputstr.h"
+
+#include <X11/Xmd.h>
+#include <X11/X.h>
+#include <X11/extensions/XI2proto.h>
+
+#include "exglobals.h"
+#include "exevents.h"
+#include "xiqueryversion.h"
+#include "misc.h"
+
+extern XExtensionVersion XIVersion; /* defined in getvers.c */
+/**
+ * Return the supported XI version.
+ *
+ * Saves the version the client claims to support as well, for future
+ * reference.
+ */
+int
+ProcXIQueryVersion(ClientPtr client)
+{
+    xXIQueryVersionReply rep;
+    XIClientPtr pXIClient;
+    int major, minor;
+    unsigned int sversion, cversion;
+
+    REQUEST(xXIQueryVersionReq);
+    REQUEST_SIZE_MATCH(xXIQueryVersionReq);
+
+    /* This request only exists after XI2 */
+    if (stuff->major_version < 2)
+    {
+        client->errorValue = stuff->major_version;
+        return BadValue;
+    }
+
+    pXIClient = dixLookupPrivate(&client->devPrivates, XIClientPrivateKey);
+
+    sversion = XIVersion.major_version * 1000 + XIVersion.minor_version;
+    cversion = stuff->major_version * 1000 + stuff->minor_version;
+
+    if (sversion > cversion)
+    {
+        major = stuff->major_version;
+        minor = stuff->minor_version;
+    } else
+    {
+        major = XIVersion.major_version;
+        minor = XIVersion.minor_version;
+    }
+
+    pXIClient->major_version = major;
+    pXIClient->minor_version = minor;
+
+    memset(&rep, 0, sizeof(xXIQueryVersionReply));
+    rep.repType = X_Reply;
+    rep.RepType = X_XIQueryVersion;
+    rep.length = 0;
+    rep.sequenceNumber = client->sequence;
+    rep.major_version = major;
+    rep.minor_version = minor;
+
+    WriteReplyToClient(client, sizeof(xXIQueryVersionReply), &rep);
+
+    return Success;
+}
+
+/* Swapping routines */
+
+int
+SProcXIQueryVersion(ClientPtr client)
+{
+    char n;
+
+    REQUEST(xXIQueryVersionReq);
+    swaps(&stuff->length, n);
+    REQUEST_AT_LEAST_SIZE(xXIQueryVersionReq);
+    swaps(&stuff->major_version, n);
+    swaps(&stuff->minor_version, n);
+    return (ProcXIQueryVersion(client));
+}
+
+void
+SRepXIQueryVersion(ClientPtr client, int size, xXIQueryVersionReply *rep)
+{
+    char n;
+    swaps(&rep->sequenceNumber, n);
+    swapl(&rep->length, n);
+    swaps(&rep->major_version, n);
+    swaps(&rep->minor_version, n);
+    WriteToClient(client, size, (char *)rep);
+}