153 lines
4.6 KiB
C
153 lines
4.6 KiB
C
/*
|
|
* 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;
|
|
|
|
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);
|
|
|
|
if (version_compare(XIVersion.major_version, XIVersion.minor_version,
|
|
stuff->major_version, stuff->minor_version) > 0) {
|
|
major = stuff->major_version;
|
|
minor = stuff->minor_version;
|
|
} else {
|
|
major = XIVersion.major_version;
|
|
minor = XIVersion.minor_version;
|
|
}
|
|
|
|
if (pXIClient->major_version) {
|
|
|
|
/* Check to see if the client has only ever asked
|
|
* for version 2.2 or higher
|
|
*/
|
|
if (version_compare(major, minor, 2, 2) >= 0 &&
|
|
version_compare(pXIClient->major_version, pXIClient->minor_version, 2, 2) >= 0)
|
|
{
|
|
|
|
/* As of version 2.2, Peter promises to never again break
|
|
* backward compatibility, so we'll return the requested
|
|
* version to the client but leave the server internal
|
|
* version set to the highest requested value
|
|
*/
|
|
if (version_compare(major, minor,
|
|
pXIClient->major_version, pXIClient->minor_version) > 0)
|
|
{
|
|
pXIClient->major_version = major;
|
|
pXIClient->minor_version = minor;
|
|
}
|
|
} else {
|
|
if (version_compare(major, minor,
|
|
pXIClient->major_version, pXIClient->minor_version) < 0) {
|
|
|
|
client->errorValue = stuff->major_version;
|
|
return BadValue;
|
|
}
|
|
major = pXIClient->major_version;
|
|
minor = pXIClient->minor_version;
|
|
}
|
|
} else {
|
|
pXIClient->major_version = major;
|
|
pXIClient->minor_version = minor;
|
|
}
|
|
|
|
rep = (xXIQueryVersionReply) {
|
|
.repType = X_Reply,
|
|
.RepType = X_XIQueryVersion,
|
|
.sequenceNumber = client->sequence,
|
|
.length = 0,
|
|
.major_version = major,
|
|
.minor_version = minor
|
|
};
|
|
|
|
WriteReplyToClient(client, sizeof(xXIQueryVersionReply), &rep);
|
|
|
|
return Success;
|
|
}
|
|
|
|
/* Swapping routines */
|
|
|
|
int
|
|
SProcXIQueryVersion(ClientPtr client)
|
|
{
|
|
REQUEST(xXIQueryVersionReq);
|
|
swaps(&stuff->length);
|
|
REQUEST_AT_LEAST_SIZE(xXIQueryVersionReq);
|
|
swaps(&stuff->major_version);
|
|
swaps(&stuff->minor_version);
|
|
return (ProcXIQueryVersion(client));
|
|
}
|
|
|
|
void
|
|
SRepXIQueryVersion(ClientPtr client, int size, xXIQueryVersionReply * rep)
|
|
{
|
|
swaps(&rep->sequenceNumber);
|
|
swapl(&rep->length);
|
|
swaps(&rep->major_version);
|
|
swaps(&rep->minor_version);
|
|
WriteToClient(client, size, rep);
|
|
}
|