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Re: [Qemu-devel] [PATCH v2 3/3] io: use case insensitive check for Conne
From: |
Daniel P. Berrange |
Subject: |
Re: [Qemu-devel] [PATCH v2 3/3] io: use case insensitive check for Connection & Upgrade websock headers |
Date: |
Fri, 8 Sep 2017 14:26:33 +0100 |
User-agent: |
Mutt/1.8.3 (2017-05-23) |
On Fri, Sep 08, 2017 at 10:22:00AM -0300, Philippe Mathieu-Daudé wrote:
> Hi Daniel,
>
> On 09/08/2017 07:30 AM, Daniel P. Berrange wrote:
> > When checking the value of the Connection and Upgrade HTTP headers
> > the websock RFC (6455) requires the comparison to be case insensitive.
> > The Connection value should be an exact match not a substring.
> >
> > Reviewed-by: Eric Blake <address@hidden>
> > Signed-off-by: Daniel P. Berrange <address@hidden>
> > ---
> > io/channel-websock.c | 4 ++--
> > 1 file changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/io/channel-websock.c b/io/channel-websock.c
> > index aed7a6c9b3..ab332ec907 100644
> > --- a/io/channel-websock.c
> > +++ b/io/channel-websock.c
> > @@ -427,12 +427,12 @@ static void
> > qio_channel_websock_handshake_process(QIOChannelWebsock *ioc,
> > goto bad_request;
> > }
> > - if (!g_strrstr(connection, QIO_CHANNEL_WEBSOCK_CONNECTION_UPGRADE)) {
> > + if (strcasecmp(connection, QIO_CHANNEL_WEBSOCK_CONNECTION_UPGRADE) !=
> > 0) {
>
> Why not use g_ascii_strcasecmp() ?
Functionally it doesn't matter either way, but there's no usage of
g_ascii_strcasecmp in QEMU so I don't see a benefit to using that
>
> > error_setg(errp, "No connection upgrade requested '%s'",
> > connection);
> > goto bad_request;
> > }
> > - if (!g_str_equal(upgrade, QIO_CHANNEL_WEBSOCK_UPGRADE_WEBSOCKET)) {
> > + if (strcasecmp(upgrade, QIO_CHANNEL_WEBSOCK_UPGRADE_WEBSOCKET) != 0) {
> > error_setg(errp, "Incorrect upgrade method '%s'", upgrade);
> > goto bad_request;
> > }
> >
Regards,
Daniel
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