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Re: [Qemu-devel] [PATCH] io: ignore case when matching websockets HTTP h
From: |
Denis V. Lunev |
Subject: |
Re: [Qemu-devel] [PATCH] io: ignore case when matching websockets HTTP headers |
Date: |
Tue, 28 Feb 2017 10:29:15 +0300 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.7.0 |
On 02/28/2017 12:20 AM, Eric Blake wrote:
> On 02/27/2017 02:14 PM, Daniel P. Berrange wrote:
>> According to RFC7230 Section 3.2, header field name is case-insensitive.
>> Convert the header data into all lowercase before doing string matching
>> on the headers.
>>
>> Signed-off-by: Daniel P. Berrange <address@hidden>
>> ---
>> io/channel-websock.c | 14 +++++++++-----
>> 1 file changed, 9 insertions(+), 5 deletions(-)
>>
>> @@ -223,7 +223,7 @@ static int
>> qio_channel_websock_handshake_process(QIOChannelWebsock *ioc,
>> static int qio_channel_websock_handshake_read(QIOChannelWebsock *ioc,
>> Error **errp)
>> {
>> - char *handshake_end;
>> + char *handshake_end, *tmp;
>> ssize_t ret;
>> /* Typical HTTP headers from novnc are 512 bytes, so limiting
>> * total header size to 4096 is easily enough. */
> Drive-by grammar nit: s/easily/easy/
>
>> @@ -249,9 +249,13 @@ static int
>> qio_channel_websock_handshake_read(QIOChannelWebsock *ioc,
>> }
>> }
>>
>> + for (tmp = (char *)ioc->encinput.buffer; tmp < handshake_end; tmp++) {
>> + *tmp = g_ascii_tolower(*tmp);
>> + }
>> +
>> if (qio_channel_websock_handshake_process(ioc,
>> (char *)ioc->encinput.buffer,
>> - ioc->encinput.offset,
>> + handshake_end - (char
>> *)ioc->encinput.buffer,
> I'm not sure why this change is here; nothing else in the patch changed
> ioc->encinput.offset.
>
yep. The rest seems fine to me.
Usage of g_ascii_strdown () seems overkill now. We do not need
the header anymore after this call.
Den