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100 lines
4.1 KiB
Diff
100 lines
4.1 KiB
Diff
From 563e93ae4a060df93044313818b4164fd96362d9 Mon Sep 17 00:00:00 2001
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From: Jeff Sharkey <jsharkey@android.com>
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Date: Wed, 17 Jul 2019 18:51:28 -0600
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Subject: [PATCH] RESTRICT AUTOMERGE Enable stricter SQLiteQueryBuilder
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options.
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Malicious callers can leak side-channel information by using
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subqueries in any untrusted inputs where SQLite allows "expr" values.
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This change starts using setStrictColumns() and setStrictGrammar()
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on SQLiteQueryBuilder to block this class of attacks. This means we
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now need to define the projection mapping of valid columns, which
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consists of both the columns defined in the public API and columns
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read internally by DownloadInfo.Reader.
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We're okay growing sAppReadableColumnsSet like this, since we're
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relying on our trusted WHERE clause to filter away any rows that
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don't belong to the calling UID.
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Remove the legacy Lexer code, since we're now internally relying on
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the robust and well-tested SQLiteTokenizer logic.
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Bug: 135270103
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Bug: 135269143
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Test: atest DownloadProviderTests
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Test: atest CtsAppTestCases:android.app.cts.DownloadManagerTest
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Change-Id: Iec1e8ce18dc4a9564318e0473d9d3863c8c2988a
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(cherry picked from commit 13f49c42599dc2ea0be376be34275aefcb70d398)
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---
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core/java/android/app/DownloadManager.java | 42 +++++++++++-----------
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1 file changed, 22 insertions(+), 20 deletions(-)
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diff --git a/core/java/android/app/DownloadManager.java b/core/java/android/app/DownloadManager.java
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index 91925db26e58..67b7446388d7 100755
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--- a/core/java/android/app/DownloadManager.java
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+++ b/core/java/android/app/DownloadManager.java
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@@ -114,6 +114,9 @@
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*/
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public final static String COLUMN_STATUS = Downloads.Impl.COLUMN_STATUS;
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+ /** {@hide} */
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+ public static final String COLUMN_FILE_NAME_HINT = Downloads.Impl.COLUMN_FILE_NAME_HINT;
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+
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/**
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* Provides more detail on the status of the download. Its meaning depends on the value of
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* {@link #COLUMN_STATUS}.
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@@ -151,6 +154,9 @@
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*/
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public static final String COLUMN_MEDIAPROVIDER_URI = Downloads.Impl.COLUMN_MEDIAPROVIDER_URI;
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+ /** {@hide} */
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+ public static final String COLUMN_DESTINATION = Downloads.Impl.COLUMN_DESTINATION;
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+
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/**
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* @hide
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*/
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@@ -319,26 +325,22 @@
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* @hide
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*/
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public static final String[] UNDERLYING_COLUMNS = new String[] {
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- Downloads.Impl._ID,
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- Downloads.Impl._DATA + " AS " + COLUMN_LOCAL_FILENAME,
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- Downloads.Impl.COLUMN_MEDIAPROVIDER_URI,
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- Downloads.Impl.COLUMN_DESTINATION,
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- Downloads.Impl.COLUMN_TITLE,
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- Downloads.Impl.COLUMN_DESCRIPTION,
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- Downloads.Impl.COLUMN_URI,
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- Downloads.Impl.COLUMN_STATUS,
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- Downloads.Impl.COLUMN_FILE_NAME_HINT,
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- Downloads.Impl.COLUMN_MIME_TYPE + " AS " + COLUMN_MEDIA_TYPE,
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- Downloads.Impl.COLUMN_TOTAL_BYTES + " AS " + COLUMN_TOTAL_SIZE_BYTES,
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- Downloads.Impl.COLUMN_LAST_MODIFICATION + " AS " + COLUMN_LAST_MODIFIED_TIMESTAMP,
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- Downloads.Impl.COLUMN_CURRENT_BYTES + " AS " + COLUMN_BYTES_DOWNLOADED_SO_FAR,
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- Downloads.Impl.COLUMN_ALLOW_WRITE,
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- /* add the following 'computed' columns to the cursor.
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- * they are not 'returned' by the database, but their inclusion
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- * eliminates need to have lot of methods in CursorTranslator
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- */
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- "'placeholder' AS " + COLUMN_LOCAL_URI,
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- "'placeholder' AS " + COLUMN_REASON
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+ DownloadManager.COLUMN_ID,
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+ DownloadManager.COLUMN_LOCAL_FILENAME,
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+ DownloadManager.COLUMN_MEDIAPROVIDER_URI,
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+ DownloadManager.COLUMN_DESTINATION,
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+ DownloadManager.COLUMN_TITLE,
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+ DownloadManager.COLUMN_DESCRIPTION,
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+ DownloadManager.COLUMN_URI,
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+ DownloadManager.COLUMN_STATUS,
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+ DownloadManager.COLUMN_FILE_NAME_HINT,
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+ DownloadManager.COLUMN_MEDIA_TYPE,
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+ DownloadManager.COLUMN_TOTAL_SIZE_BYTES,
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+ DownloadManager.COLUMN_LAST_MODIFIED_TIMESTAMP,
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+ DownloadManager.COLUMN_BYTES_DOWNLOADED_SO_FAR,
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+ DownloadManager.COLUMN_ALLOW_WRITE,
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+ DownloadManager.COLUMN_LOCAL_URI,
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+ DownloadManager.COLUMN_REASON
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};
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/**
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