ADHOC/replicant-packages_apps_Email
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Make sure old body files don't contaminate new messages

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If we have an error writing an old body file and overwrite the same ID,
we might end up in a situation where we have HTML from one message and Text
from another. Clean up the body files before insert to avoid this.

b/17720266

Change-Id: I2fb18fa24c6f3bc01e7c877e2f3bfccee6a34015
This commit is contained in:
Tony Mantler 2014-10-01 13:27:01 -07:00
parent 69ba565b62
commit b62067e3c3
1 changed files with 12 additions and 8 deletions
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20
provider_src/com/android/email/provider/EmailProvider.java
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@ -758,12 +758,9 @@ public class EmailProvider extends ContentProvider
if (messageDeletion) {
if (match == MESSAGE_ID) {
// Delete the Body record associated with the deleted message
final ContentValues emptyValues = new ContentValues(2);
emptyValues.putNull(BodyColumns.HTML_CONTENT);
emptyValues.putNull(BodyColumns.TEXT_CONTENT);
final long messageId = Long.valueOf(id);
try {
writeBodyFiles(context, messageId, emptyValues);
deleteBodyFiles(context, messageId);
} catch (final IllegalStateException e) {
LogUtils.v(LogUtils.TAG, e, "Exception while deleting bodies");
}
@ -772,13 +769,10 @@ public class EmailProvider extends ContentProvider
// Delete any orphaned Body records
final Cursor orphans = db.rawQuery(ORPHAN_BODY_MESSAGE_ID_SELECT, null);
try {
final ContentValues emptyValues = new ContentValues(2);
emptyValues.putNull(BodyColumns.HTML_CONTENT);
emptyValues.putNull(BodyColumns.TEXT_CONTENT);
while (orphans.moveToNext()) {
final long messageId = orphans.getLong(0);
try {
writeBodyFiles(context, messageId, emptyValues);
deleteBodyFiles(context, messageId);
} catch (final IllegalStateException e) {
LogUtils.v(LogUtils.TAG, e, "Exception while deleting bodies");
}
@ -908,6 +902,8 @@ public class EmailProvider extends ContentProvider
"Cannot insert body without MESSAGE_KEY");
}
final long messageId = values.getAsLong(BodyColumns.MESSAGE_KEY);
// Ensure that no pre-existing body files contaminate the message
deleteBodyFiles(context, messageId);
writeBodyFiles(getContext(), messageId, values);
break;
// NOTE: It is NOT legal for production code to insert directly into UPDATED_MESSAGE
@ -2220,6 +2216,14 @@ public class EmailProvider extends ContentProvider
return result;
}
private static void deleteBodyFiles(final Context c, final long messageId)
throws IllegalStateException {
final ContentValues emptyValues = new ContentValues(2);
emptyValues.putNull(BodyColumns.HTML_CONTENT);
emptyValues.putNull(BodyColumns.TEXT_CONTENT);
writeBodyFiles(c, messageId, emptyValues);
}
/**
* Writes message bodies to disk, read from a set of ContentValues
*