[openssl-users] ssl_pending returns 0 despite having data to read

[Ryan Murray]

Situation maybe a security issue

Ryan Murray

On Jan 11, 2017 4:14 PM, "Ryan Murray" <rjkmurray40 at gmail.com> wrote:

> Could you give me a hand on a issue I've seem to of picked up with my
> device . You and the colleagues if possible. My SamsungGalaxy s2 tablet not
> responding.  Power button and display goes black and does not turn on for a
> period of time.  I believe the programs running in background or in a
> rooted format has been making the device malfunction. Is there a remote
> interface we could link up and establish what the heck is happening.  Lol
> Your truly
> Ryan
>
> Ryan Murray
>
> On Jan 11, 2017 4:08 PM, "Nadia Lapkovskaya" <nadia at yaymedia.com> wrote:
>
>> Hi,
>>
>> We are using openssl-1.0.2j. Noticed, that for http protocol everything
>> is working fine, but when we are using our own binary protocol ssl_pending
>> returns 0 all the time. We are using blocking socket. Tried with
>> SSL_CTX_set_read_ahead set and unset.
>>
>> Out test server sends back any info received from the client.
>>
>> Test code looks like this:
>> bool write(const uint64_t* data, int count)
>> {
>>   int rc = SSL_write(_ssl, data, count * sizeof(uint64_t));
>>   return rc > 0 ? true : false;
>> }
>>
>> bool read(uint64_t* data, int count)
>> {
>>   do {
>>       int rc = SSL_read(_ssl, data, count * sizeof(uint64_t));
>>       if (rc <= 0) {
>>           int err = SSL_get_error(_ssl, rc);
>>           std::string errs = ERR_error_string(err, nullptr);
>>           return false;
>>       }
>>   } while (SSL_pending(_ssl));
>>   return true;
>> }
>>
>> During first ssl_read we received eight bytes, and after that ssl_pending
>> returns 0. If we continue reading despite having no pending data, ssl_read
>> returns the rest of the data.
>> Could you please suggest what is wrong here.
>>
>>
>> Best regards,
>> Nadia.
>>
>> --
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>>
>
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