Changes

* Download a blacklist blocklist file on a timer (86400 default)* If items are newly blacklisted blocklisted or unblacklistedunblocklisted, adjust the datasource appropriately and prompt to restart.* The blacklist blocklist file will be placed in the profile-dir.* Blacklist Blocklist is _replaced_ on each update, not merged or otherwise combined.

== Blacklist Blocklist syntax ==

* The blacklist blocklist file has a flexible xml syntax that will use default values for values that are not specified. All Extension Manager items must be children of <tt>emItems</tt> in order to ease the use of this file for additional blacklist blocklist items such as plugins that are not managed by the Extension Manager.

<pre><blacklist blocklist xmlns="http://www.mozilla.org/2006/blacklistblocklist">

</blacklistblocklist></pre>

* The <tt>item_1@domain</tt> Extension Manager item will be blacklisted blocklisted if a version between <tt>1.0</tt> and <tt>2.0.*</tt> (e.g. less than <tt>2.1</tt>) is installed and the Firefox (e.g. <tt>id</tt> equal to <tt>{ec8030f7-c20a-464f-9b0e-13a3a9e97384}</tt>) version is between <tt>1.5</tt> and <tt>1.5.*</tt> (e.g. less than <tt>1.6</tt>), the Firefox version is between 1.7 and <tt>1.7.*</tt> (e.g. less than <tt>1.8</tt>), or the Toolkit version is between <tt>1.8</tt> and <tt>1.8.*</tt> (e.g. less than <tt>1.9</tt>). Also, the item_1@domain Extension Manager item will be blacklisted blocklisted if a version between <tt>3.0</tt> and <tt>3.0.*</tt> (e.g. less than <tt>3.1</tt>) is installed and the Firefox (e.g. <tt>id</tt> equal to <tt>{ec8030f7-c20a-464f-9b0e-13a3a9e97384}</tt>) version is between <tt>1.5</tt> and <tt>1.5.*</tt> (e.g. less than <tt>1.6</tt>) or the Toolkit version is between <tt>1.8</tt> and <tt>1.8.*</tt> (e.g. less than <tt>1.9</tt>).* The <tt>item_2@domain</tt> Extension Manager item will be blacklisted blocklisted if a version between <tt>3.1</tt> and <tt>4.*</tt> (e.g. less than <tt>5</tt>) is installed for all version of the current application.* All version of the item_3@domain Extension Manager item will be blacklisted blocklisted if the Firefox (e.g. <tt>id</tt> equal to <tt>{ec8030f7-c20a-464f-9b0e-13a3a9e97384}</tt>) version is between <tt>1.5</tt> and <tt>1.5.*</tt> (e.g. less than <tt>1.6</tt>).* All versions of the <tt>item_4@domain</tt> Extension Manager item will be blacklisted blocklisted if the current application version is between <tt>1.5</tt> and <tt>1.5.*</tt> (e.g. less than <tt>1.6</tt>).* All versions of the <tt>item_5@domain</tt> Extension Manager item will be blacklisted blocklisted for all version of the current application.

As can be seen it is possible to blacklist blocklist all version of an extension for all versions of an application as well as any combination of application id's along with version ranges for both the extension id and application id. Also, by not specifying a value and instead using the default value it is possible to lessen the size of the blacklist blocklist xml file. This is possible by using the following defaults:

If an extension's metadata matches all of the conditions it will be blacklisted blocklisted and no further checking for that extension will be performed. This allows handling of overlapping ranges though there has been no use case for supporting overlapping ranges.

We will be using individual blacklist blocklist files for each application in order to not penalize one application that has few or no blacklist blocklist items with the blacklist blocklist for an application that contains numerous blacklisted blocklisted items.