Add ActiveSync support to Horde for allowing Horde to sync with mobile devices using the mobile device's support for Microsoft Exchange/ActiveSync. Use Z-Push library (http://z-push.sourceforge.net) for handling ActiveSync protocol communication.
Michael Rubinsky
Jan Schneider
Integrate the Z-Push library into Horde. Provide the ability for Horde to provide over the air synchronization of email, contacts, and calendar data to devices such as the iPhone/iPod Touch, Android and any other system supporting ActiveSync.
Need to implement ghosted properties / SUPPORTED tag. Currently, all data on the server is overwritten and replaced with only what the PIM sends. It's possible for some PIMS to ghost contact and calendar properties so that only the supplied tags are changed, and missing, ghosted properties are retained on the server. When a PIM supports this, it sends a SUPPORTED tag with children representing the NON-ghosted properties. Based on other clients I see, it appears that the absence of the SUPPORTED tag would indicate that any property not transmitted should be handled as a ghosted property??
http://z-push.sourceforge.net
https://zimbrabackend.svn.sourceforge.net/svnroot/zimbrabackend/zimbra.php
Some discussion/issues/info on calendar sycing
http://z-push.sourceforge.net/phpbb/viewtopic.php?f=4&t=119&start=10
Some work towards a Horde adapter for Z-Push:
http://z-push.sourceforge.net/phpbb/viewtopic.php?f=4&t=879
Some discussion on remote wipe issues with various devices
http://z-push.sourceforge.net/phpbb/viewtopic.php?f=4&t=802
Useful information/examples:
http://wiki.openchange.org/index.php/ActiveSync_Protocol
Web-based client test
https://www.testexchangeconnectivity.com/
Another AS implementation in PHP, though we can't use it due to the license, there is some good information there for the taking.
https://svn.tine20.org/svn/trunk/tine20/ActiveSync
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