Merge "Put updatable font failure fix behind the flag" into main
diff --git a/core/java/android/text/flags/flags.aconfig b/core/java/android/text/flags/flags.aconfig
index 44fa186..a8a0c5b 100644
--- a/core/java/android/text/flags/flags.aconfig
+++ b/core/java/android/text/flags/flags.aconfig
@@ -160,3 +160,14 @@
   description: "Feature flag for showing error message when user tries stylus handwriting on a text field which doesn't support it"
   bug: "297962571"
 }
+
+flag {
+  name: "fix_font_update_failure"
+  namespace: "text"
+  description: "There was a bug of updating system font from Android 13 to 14. This flag for fixing the migration failure."
+  is_fixed_read_only: true
+  bug: "331717791"
+  metadata {
+    purpose: PURPOSE_BUGFIX
+  }
+}
diff --git a/services/core/java/com/android/server/graphics/fonts/UpdatableFontDir.java b/services/core/java/com/android/server/graphics/fonts/UpdatableFontDir.java
index 9d04682..ea240c7 100644
--- a/services/core/java/com/android/server/graphics/fonts/UpdatableFontDir.java
+++ b/services/core/java/com/android/server/graphics/fonts/UpdatableFontDir.java
@@ -196,7 +196,12 @@
                 File signatureFile = new File(dir, FONT_SIGNATURE_FILE);
                 if (!signatureFile.exists()) {
                     Slog.i(TAG, "The signature file is missing.");
-                    return;
+                    if (com.android.text.flags.Flags.fixFontUpdateFailure()) {
+                        return;
+                    } else {
+                        FileUtils.deleteContentsAndDir(dir);
+                        continue;
+                    }
                 }
                 byte[] signature;
                 try {
@@ -221,33 +226,39 @@
 
                 FontFileInfo fontFileInfo = validateFontFile(fontFile, signature);
                 if (fontConfig == null) {
-                    // Use preinstalled font config for checking revision number.
-                    fontConfig = mConfigSupplier.apply(Collections.emptyMap());
+                    if (com.android.text.flags.Flags.fixFontUpdateFailure()) {
+                        // Use preinstalled font config for checking revision number.
+                        fontConfig = mConfigSupplier.apply(Collections.emptyMap());
+                    } else {
+                        fontConfig = getSystemFontConfig();
+                    }
                 }
                 addFileToMapIfSameOrNewer(fontFileInfo, fontConfig, true /* deleteOldFile */);
             }
 
-            // Treat as error if post script name of font family was not installed.
-            for (int i = 0; i < config.fontFamilies.size(); ++i) {
-                FontUpdateRequest.Family family = config.fontFamilies.get(i);
-                for (int j = 0; j < family.getFonts().size(); ++j) {
-                    FontUpdateRequest.Font font = family.getFonts().get(j);
-                    if (mFontFileInfoMap.containsKey(font.getPostScriptName())) {
-                        continue;
-                    }
+            if (com.android.text.flags.Flags.fixFontUpdateFailure()) {
+                // Treat as error if post script name of font family was not installed.
+                for (int i = 0; i < config.fontFamilies.size(); ++i) {
+                    FontUpdateRequest.Family family = config.fontFamilies.get(i);
+                    for (int j = 0; j < family.getFonts().size(); ++j) {
+                        FontUpdateRequest.Font font = family.getFonts().get(j);
+                        if (mFontFileInfoMap.containsKey(font.getPostScriptName())) {
+                            continue;
+                        }
 
-                    if (fontConfig == null) {
-                        fontConfig = mConfigSupplier.apply(Collections.emptyMap());
-                    }
+                        if (fontConfig == null) {
+                            fontConfig = mConfigSupplier.apply(Collections.emptyMap());
+                        }
 
-                    if (getFontByPostScriptName(font.getPostScriptName(), fontConfig) != null) {
-                        continue;
-                    }
+                        if (getFontByPostScriptName(font.getPostScriptName(), fontConfig) != null) {
+                            continue;
+                        }
 
-                    Slog.e(TAG, "Unknown font that has PostScript name "
-                            + font.getPostScriptName() + " is requested in FontFamily "
-                            + family.getName());
-                    return;
+                        Slog.e(TAG, "Unknown font that has PostScript name "
+                                + font.getPostScriptName() + " is requested in FontFamily "
+                                + family.getName());
+                        return;
+                    }
                 }
             }
 
@@ -262,7 +273,9 @@
                 mFontFileInfoMap.clear();
                 mLastModifiedMillis = 0;
                 FileUtils.deleteContents(mFilesDir);
-                mConfigFile.delete();
+                if (com.android.text.flags.Flags.fixFontUpdateFailure()) {
+                    mConfigFile.delete();
+                }
             }
         }
     }
diff --git a/services/tests/servicestests/src/com/android/server/graphics/fonts/UpdatableFontDirTest.java b/services/tests/servicestests/src/com/android/server/graphics/fonts/UpdatableFontDirTest.java
index fa89278..44aa868 100644
--- a/services/tests/servicestests/src/com/android/server/graphics/fonts/UpdatableFontDirTest.java
+++ b/services/tests/servicestests/src/com/android/server/graphics/fonts/UpdatableFontDirTest.java
@@ -30,6 +30,9 @@
 import android.os.FileUtils;
 import android.os.ParcelFileDescriptor;
 import android.platform.test.annotations.Presubmit;
+import android.platform.test.annotations.RequiresFlagsEnabled;
+import android.platform.test.flag.junit.CheckFlagsRule;
+import android.platform.test.flag.junit.DeviceFlagsValueProvider;
 import android.system.Os;
 import android.text.FontConfig;
 import android.util.Xml;
@@ -38,8 +41,11 @@
 import androidx.test.filters.SmallTest;
 import androidx.test.runner.AndroidJUnit4;
 
+import com.android.text.flags.Flags;
+
 import org.junit.After;
 import org.junit.Before;
+import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.xmlpull.v1.XmlPullParser;
@@ -69,6 +75,9 @@
 
     private static final String LEGACY_FONTS_XML = "/system/etc/fonts.xml";
 
+    @Rule
+    public final CheckFlagsRule mCheckFlagsRule = DeviceFlagsValueProvider.createCheckFlagsRule();
+
     /**
      * A {@link UpdatableFontDir.FontFileParser} for testing. Instead of using real font files,
      * this test uses fake font files. A fake font file has its PostScript naem and revision as the
@@ -1097,6 +1106,7 @@
     }
 
     @Test
+    @RequiresFlagsEnabled(Flags.FLAG_FIX_FONT_UPDATE_FAILURE)
     public void signatureMissingCase_fontFamilyInstalled_fontFamilyInstallLater() {
         // Install font families, foo.ttf, bar.ttf.
         installTestFontFamilies(1 /* version */);
@@ -1116,6 +1126,7 @@
     }
 
     @Test
+    @RequiresFlagsEnabled(Flags.FLAG_FIX_FONT_UPDATE_FAILURE)
     public void signatureMissingCase_fontFamilyInstalled_fontInstallLater() {
         // Install font families, foo.ttf, bar.ttf.
         installTestFontFamilies(1);
@@ -1135,6 +1146,7 @@
     }
 
     @Test
+    @RequiresFlagsEnabled(Flags.FLAG_FIX_FONT_UPDATE_FAILURE)
     public void signatureMissingCase_fontFileInstalled_fontFamilyInstallLater() {
         // Install font file, foo.ttf and bar.ttf
         installTestFontFile(2 /* numFonts */, 1 /* version */);
@@ -1154,6 +1166,7 @@
     }
 
     @Test
+    @RequiresFlagsEnabled(Flags.FLAG_FIX_FONT_UPDATE_FAILURE)
     public void signatureMissingCase_fontFileInstalled_fontFileInstallLater() {
         // Install font file, foo.ttf and bar.ttf
         installTestFontFile(2 /* numFonts */, 1 /* version */);
@@ -1173,6 +1186,7 @@
     }
 
     @Test
+    @RequiresFlagsEnabled(Flags.FLAG_FIX_FONT_UPDATE_FAILURE)
     public void signatureAllMissingCase_fontFamilyInstalled_fontFamilyInstallLater() {
         // Install font families, foo.ttf, bar.ttf.
         installTestFontFamilies(1 /* version */);
@@ -1192,6 +1206,7 @@
     }
 
     @Test
+    @RequiresFlagsEnabled(Flags.FLAG_FIX_FONT_UPDATE_FAILURE)
     public void signatureAllMissingCase_fontFamilyInstalled_fontInstallLater() {
         // Install font families, foo.ttf, bar.ttf.
         installTestFontFamilies(1 /* version */);
@@ -1211,6 +1226,7 @@
     }
 
     @Test
+    @RequiresFlagsEnabled(Flags.FLAG_FIX_FONT_UPDATE_FAILURE)
     public void signatureAllMissingCase_fontFileInstalled_fontFamilyInstallLater() {
         // Install font file, foo.ttf
         installTestFontFile(1 /* numFonts */, 1 /* version */);
@@ -1230,6 +1246,7 @@
     }
 
     @Test
+    @RequiresFlagsEnabled(Flags.FLAG_FIX_FONT_UPDATE_FAILURE)
     public void signatureAllMissingCase_fontFileInstalled_fontFileInstallLater() {
         // Install font file, foo.ttf
         installTestFontFile(1 /* numFonts */, 1 /* version */);
@@ -1249,6 +1266,7 @@
     }
 
     @Test
+    @RequiresFlagsEnabled(Flags.FLAG_FIX_FONT_UPDATE_FAILURE)
     public void fontMissingCase_fontFamilyInstalled_fontFamilyInstallLater() {
         // Install font families, foo.ttf, bar.ttf.
         installTestFontFamilies(1 /* version */);
@@ -1268,6 +1286,7 @@
     }
 
     @Test
+    @RequiresFlagsEnabled(Flags.FLAG_FIX_FONT_UPDATE_FAILURE)
     public void fontMissingCase_fontFamilyInstalled_fontInstallLater() {
         // Install font families, foo.ttf, bar.ttf.
         installTestFontFamilies(1);
@@ -1287,6 +1306,7 @@
     }
 
     @Test
+    @RequiresFlagsEnabled(Flags.FLAG_FIX_FONT_UPDATE_FAILURE)
     public void fontMissingCase_fontFileInstalled_fontFamilyInstallLater() {
         // Install font file, foo.ttf and bar.ttf
         installTestFontFile(2 /* numFonts */, 1 /* version */);
@@ -1306,6 +1326,7 @@
     }
 
     @Test
+    @RequiresFlagsEnabled(Flags.FLAG_FIX_FONT_UPDATE_FAILURE)
     public void fontMissingCase_fontFileInstalled_fontFileInstallLater() {
         // Install font file, foo.ttf and bar.ttf
         installTestFontFile(2 /* numFonts */, 1 /* version */);
@@ -1325,6 +1346,7 @@
     }
 
     @Test
+    @RequiresFlagsEnabled(Flags.FLAG_FIX_FONT_UPDATE_FAILURE)
     public void fontAllMissingCase_fontFamilyInstalled_fontFamilyInstallLater() {
         // Install font families, foo.ttf, bar.ttf.
         installTestFontFamilies(1 /* version */);
@@ -1344,6 +1366,7 @@
     }
 
     @Test
+    @RequiresFlagsEnabled(Flags.FLAG_FIX_FONT_UPDATE_FAILURE)
     public void fontAllMissingCase_fontFamilyInstalled_fontInstallLater() {
         // Install font families, foo.ttf, bar.ttf.
         installTestFontFamilies(1 /* version */);
@@ -1363,6 +1386,7 @@
     }
 
     @Test
+    @RequiresFlagsEnabled(Flags.FLAG_FIX_FONT_UPDATE_FAILURE)
     public void fontAllMissingCase_fontFileInstalled_fontFamilyInstallLater() {
         // Install font file, foo.ttf
         installTestFontFile(1 /* numFonts */, 1 /* version */);
@@ -1382,6 +1406,7 @@
     }
 
     @Test
+    @RequiresFlagsEnabled(Flags.FLAG_FIX_FONT_UPDATE_FAILURE)
     public void fontAllMissingCase_fontFileInstalled_fontFileInstallLater() {
         // Install font file, foo.ttf
         installTestFontFile(1 /* numFonts */, 1 /* version */);
@@ -1401,6 +1426,7 @@
     }
 
     @Test
+    @RequiresFlagsEnabled(Flags.FLAG_FIX_FONT_UPDATE_FAILURE)
     public void fontDirAllMissingCase_fontFamilyInstalled_fontFamilyInstallLater() {
         // Install font families, foo.ttf, bar.ttf.
         installTestFontFamilies(1 /* version */);
@@ -1420,6 +1446,7 @@
     }
 
     @Test
+    @RequiresFlagsEnabled(Flags.FLAG_FIX_FONT_UPDATE_FAILURE)
     public void fontDirAllMissingCase_fontFamilyInstalled_fontInstallLater() {
         // Install font families, foo.ttf, bar.ttf.
         installTestFontFamilies(1 /* version */);
@@ -1439,6 +1466,7 @@
     }
 
     @Test
+    @RequiresFlagsEnabled(Flags.FLAG_FIX_FONT_UPDATE_FAILURE)
     public void fontDirAllMissingCase_fontFileInstalled_fontFamilyInstallLater() {
         // Install font file, foo.ttf
         installTestFontFile(1 /* numFonts */, 1 /* version */);
@@ -1458,6 +1486,7 @@
     }
 
     @Test
+    @RequiresFlagsEnabled(Flags.FLAG_FIX_FONT_UPDATE_FAILURE)
     public void fontDirAllMissingCase_fontFileInstalled_fontFileInstallLater() {
         // Install font file, foo.ttf
         installTestFontFile(1 /* numFonts */, 1 /* version */);
@@ -1477,6 +1506,7 @@
     }
 
     @Test
+    @RequiresFlagsEnabled(Flags.FLAG_FIX_FONT_UPDATE_FAILURE)
     public void dirContentAllMissingCase_fontFamilyInstalled_fontFamilyInstallLater() {
         // Install font families, foo.ttf, bar.ttf.
         installTestFontFamilies(1 /* version */);
@@ -1497,6 +1527,7 @@
     }
 
     @Test
+    @RequiresFlagsEnabled(Flags.FLAG_FIX_FONT_UPDATE_FAILURE)
     public void dirContentAllMissingCase_fontFamilyInstalled_fontInstallLater() {
         // Install font families, foo.ttf, bar.ttf.
         installTestFontFamilies(1 /* version */);
@@ -1517,6 +1548,7 @@
     }
 
     @Test
+    @RequiresFlagsEnabled(Flags.FLAG_FIX_FONT_UPDATE_FAILURE)
     public void dirContentAllMissingCase_fontFileInstalled_fontFamilyInstallLater() {
         // Install font file, foo.ttf
         installTestFontFile(1 /* numFonts */, 1 /* version */);
@@ -1537,6 +1569,7 @@
     }
 
     @Test
+    @RequiresFlagsEnabled(Flags.FLAG_FIX_FONT_UPDATE_FAILURE)
     public void dirContentAllMissingCase_fontFileInstalled_fontFileInstallLater() {
         // Install font file, foo.ttf
         installTestFontFile(1 /* numFonts */, 1 /* version */);