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Xi: prohibit multiple XIQueryVersion requests with different versions

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Return BadValue if major or minor differs on the second call.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Chase Douglas <chase.douglas@canonical.com>
This commit is contained in:
Peter Hutterer 2012-02-27 08:01:07 +10:00
parent eb84c154ed
commit 2c23ef83b0
1 changed files with 9 additions and 0 deletions
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9
Xi/xiqueryversion.c
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@ -70,6 +70,15 @@ ProcXIQueryVersion(ClientPtr client)
pXIClient = dixLookupPrivate(&client->devPrivates, XIClientPrivateKey);
if (pXIClient->major_version &&
(stuff->major_version != pXIClient->major_version ||
stuff->minor_version != pXIClient->minor_version))
{
client->errorValue = stuff->major_version;
return BadValue;
}
if (version_compare(XIVersion.major_version, XIVersion.minor_version,
stuff->major_version, stuff->minor_version) > 0) {
major = stuff->major_version;