[sync] ActiveSync issues

[Ivan Kouvykov]

С уважением, / Kindest regards,
Иван Кувыков / Ivan Kouvykov

ivan at kouvykov.com


> -----Original Message-----
> From: sync-bounces at lists.horde.org [mailto:sync-bounces at lists.horde.org]
> On Behalf Of Michael J Rubinsky
> Sent: Tuesday, August 13, 2013 4:21 AM
> To: sync at lists.horde.org
> Subject: Re: [sync] ActiveSync issues
> 
> 
> Quoting Ivan kouvykov <ivan at kouvykov.com>:
> 
> 
> >
> > It turned out that my box CPU is big-endian while data in blob is
> > little-endian. Once I changed endianness in unpack format calendars
> > started syncing.
> 
> So, did you do something like this in php?
> 
> function isLittleEndian() {
>      $testint = 0x00FF;
>      $p = pack('S', $testint);
>      return $testint===current(unpack('v', $p)); }
> 
> 
> function chbo($num) {
>      $data = dechex($num);
>      if (strlen($data) <= 2) {
>          return $num;
>      }
>      $u = unpack("H*", strrev(pack("H*", $data)));
>      $f = hexdec($u[1]);
>      return $f;
> }
> 
> if (!isLittleEndian()) {
>    $data = chbo($timezoneblob)?
> }
> 
> If not, how did you change endianness so I can add it upstream....

File attached.

I've made the following changes:

function isLittleEndian() {
        $testint = 0x00FF;
        $p = pack('S', $testint);
        return ($testint === current(unpack('v', $p)));
}

function chbo($num) {
        $u = unpack('l', strrev(pack('l', $num)));
        return $u[1];
}

In static public function getOffsetsFromSyncTZ($data) (before return):
                                                                                                                                                                                                     
        if (!isLittleEndian()) {
                $tz['bias'] = chbo($tz['bias']);
                $tz['stdbias'] = chbo($tz['stdbias']);
                $tz['dstbias'] = chbo($tz['dstbias']);
        }

In static public function getSyncTZFromOffsets(array $offsets) (before pack):

        if (!isLittleEndian()) {
                $offsets['bias'] = chbo($offsets['bias']);
                $offsets['stdbias'] = chbo($offsets['stdbias']);
                $offsets['dstbias'] = chbo($offsets['dstbias']);
        }


> --
> mike
> 
> The Horde Project (www.horde.org)
> mrubinsk at horde.org


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