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authorJean-Baptiste Queru <jbq@google.com>2009-07-01 15:27:28 -0700
committerJean-Baptiste Queru <jbq@google.com>2009-07-02 09:48:50 -0700
commitf0fa1cdc1a36cbe0abd57ef9cf9a636fd1d3e2c8 (patch)
treeac5dbc5660c3b95cdba814e82bd1700d436c8436 /docs
parent3c700a35be5ec8c4036e75abebf0e5d4bc878eff (diff)
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Fix crash in discardPurgeableFiles with proper selection syntax.
The basic crash is that this codepath was doing a query to the download provider without properly quoting its selection arguments (which is mandated by the download provider). A secondary crash is that the DESTINATION column wasn't readable. This fixes bug 1941125. Tested by force-calling discardPurgeableFiles for each download to /cache, locally adding a few debugging statements to be sure that the codepath was getting executed, and doing a market download.
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@@ -231,6 +231,7 @@ Here's the list of columns that can currently be read/queried, with comments:
<tr><td > <code>_DATA</code> </td><td > Probably should not be visible to applications. <b>WARNING</b> Security concern: This holds filenames, including those of private files. While file permissions are supposed to kick in and protect the files, hiding private filenames deeper in would probably be a reasonable idea. </td></tr>
<tr><td > <code>MIMETYPE</code> </td><td > Needs to be visible so that app can display the icon matching the mime type. Intended to be visible by 3rd-party download UIs. <b>TODO</b> Security TBD before we implement support for 3rd-party UIs. </td></tr>
<tr><td > <code>VISIBILITY</code> </td><td > Needs to be visible in case an app has both visible and invisible downloads. No obvious security concern. </td></tr>
+<tr><td > <code>DESTINATION</code> </td><td > Needs to be visible in case an app has multiple destinations and wants to distinguish between them. Also used internally by the download manager. No obvious security concern. </td></tr>
<tr><td > <code>STATUS</code> </td><td > Needs to be visible (1004). No obvious security concern. </td></tr>
<tr><td > <code>LAST_MODIFICATION</code> </td><td > Needs to be visible, e.g. so that apps can sort downloads by date of last activity, or discard old downloads. No obvious security concern. </td></tr>
<tr><td > <code>NOTIFICATION_PACKAGE</code> </td><td > Allows individual apps running under shared UIDs to identify their own downloads. No security concern: can be queried through package manager. </td></tr>