[reSIProcate] nonce delta incorrect when authenticating request

[Scott Godin]

Why would this cause a problem?  We use getSystemTime to make the
challenge nonce in the first place - so the expires delta calculations
are all relative to the local system.  Are you forming your nonce's from
outside of resip for some reason?

Scott

> -----Original Message-----
> From: resiprocate-devel-bounces at list.sipfoundry.org
> [mailto:resiprocate-devel-bounces at list.sipfoundry.org] On Behalf Of
> Justin Matthews
> Sent: Monday, July 24, 2006 3:41 PM
> To: resiprocate-devel at list.sipfoundry.org
> Subject: [reSIProcate] nonce delta incorrect when authenticating
> request
> 
> I believe the code, for windows only, in Timer.cxx::getSystemTime is
> causing helper.cxx::advancedAuthenticateRequest to fail due to the
> nonce time delta calculation.  For this scenario nonce is expected to
> most likely be the unix epoch timestamp, getSystemTime can be
> normalized to return the unix-style time on windows as follows.
> 
> UInt64
> Timer::getSystemTime()
> {
>     assert( sizeof(UInt64) == 64/8 );
>     UInt64 time=0;
> #if defined(WIN32)
>     FILETIME ft;
> 	GetSystemTimeAsFileTime(&ft);
>     ULARGE_INTEGER li;
>     li.LowPart = ft.dwLowDateTime;
>     li.HighPart = ft.dwHighDateTime;
> 
> 	/** Micro-second difference between windows and unix epoch time:
> 	  * 01.01.1970 - 01.01.1601 = 11644473600000000
> 	  */
>     time = (li.QuadPart/10) - 11644473600000000ULL; #else
>     struct timeval now;
>     gettimeofday( &now , NULL );
>     //assert( now );
>     time = now.tv_sec;
>     time = time*1000000;
>     time += now.tv_usec;
> #endif
>     return time;
> }
> 
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