From 3ac2ee36aa334bf2a667047875c3b08cbe7a6a17 Mon Sep 17 00:00:00 2001
From: Ammar Githam <ammargitham786@gmail.com>
Date: Fri, 6 Nov 2020 03:34:01 +0900
Subject: [PATCH] Remove IPTC from downloaded JPG files

---
 .idea/jarRepositories.xml                     |   5 +
 app/build.gradle                              |  10 +-
 .../instagrabber/utils/DownloadUtils.java     | 103 +++---------------
 .../instagrabber/workers/DownloadWorker.java  |  77 +++++--------
 build.gradle                                  |   1 +
 5 files changed, 55 insertions(+), 141 deletions(-)

diff --git a/.idea/jarRepositories.xml b/.idea/jarRepositories.xml
index 247f71d9..6a48fecb 100755
--- a/.idea/jarRepositories.xml
+++ b/.idea/jarRepositories.xml
@@ -31,5 +31,10 @@
       <option name="name" value="Google" />
       <option name="url" value="https://dl.google.com/dl/android/maven2/" />
     </remote-repository>
+    <remote-repository>
+      <option name="id" value="maven" />
+      <option name="name" value="maven" />
+      <option name="url" value="http://maven.geotoolkit.org/" />
+    </remote-repository>
   </component>
 </project>
\ No newline at end of file
diff --git a/app/build.gradle b/app/build.gradle
index 3c15763b..5ff087f8 100755
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -51,7 +51,9 @@ dependencies {
     def nav_version = '2.3.1'
 
     implementation 'com.google.android.material:material:1.3.0-alpha03'
-    implementation 'com.google.android.exoplayer:exoplayer:2.12.0'
+
+    implementation 'com.google.android.exoplayer:exoplayer-core:2.12.0'
+    implementation 'com.google.android.exoplayer:exoplayer-ui:2.12.0'
 
     implementation "androidx.appcompat:appcompat:$appcompat_version"
     implementation "androidx.appcompat:appcompat-resources:$appcompat_version"
@@ -67,8 +69,7 @@ dependencies {
 
     implementation 'com.google.guava:guava:27.0.1-android'
 
-//    implementation 'com.github.hendrawd:StorageUtil:1.1.0'
-//    implementation 'com.github.armcha:AutoLinkTextViewV2:2.1.1'
+    // implementation 'com.github.hendrawd:StorageUtil:1.1.0'
     implementation 'com.github.ammargitham:AutoLinkTextViewV2:master-SNAPSHOT'
 
     implementation 'org.jsoup:jsoup:1.13.1'
@@ -79,6 +80,9 @@ dependencies {
     implementation 'com.squareup.retrofit2:converter-scalars:2.9.0'
     implementation 'com.squareup.retrofit2:converter-gson:2.9.0'
 
+    implementation 'com.github.dragon66:icafe:master-SNAPSHOT'
+    implementation 'javax.media:jai_imageio:1.1.1'
+
     debugImplementation 'com.squareup.leakcanary:leakcanary-android:2.5'
 
     testImplementation 'org.junit.jupiter:junit-jupiter:5.7.0'
diff --git a/app/src/main/java/awais/instagrabber/utils/DownloadUtils.java b/app/src/main/java/awais/instagrabber/utils/DownloadUtils.java
index 76c2702e..c718ed74 100644
--- a/app/src/main/java/awais/instagrabber/utils/DownloadUtils.java
+++ b/app/src/main/java/awais/instagrabber/utils/DownloadUtils.java
@@ -5,7 +5,6 @@ import android.app.Activity;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.pm.PackageManager;
-import android.os.AsyncTask;
 import android.os.Environment;
 import android.util.Log;
 import android.util.Pair;
@@ -37,13 +36,9 @@ import java.util.regex.Pattern;
 
 import awais.instagrabber.BuildConfig;
 import awais.instagrabber.R;
-import awais.instagrabber.asyncs.DownloadAsync;
-import awais.instagrabber.asyncs.PostFetcher;
 import awais.instagrabber.models.BasePostModel;
 import awais.instagrabber.models.FeedModel;
 import awais.instagrabber.models.PostChild;
-import awais.instagrabber.models.enums.DownloadMethod;
-import awais.instagrabber.models.enums.MediaItemType;
 import awais.instagrabber.workers.DownloadWorker;
 import awaisomereport.LogCollector;
 
@@ -63,96 +58,22 @@ public final class DownloadUtils {
         return lastNotificationId;
     }
 
-    public static void batchDownload(@NonNull final Context context,
-                                     @Nullable String username,
-                                     final DownloadMethod method,
-                                     final List<? extends BasePostModel> itemsToDownload) {
-        if (Utils.settingsHelper == null) Utils.settingsHelper = new SettingsHelper(context);
-
-        if (itemsToDownload == null || itemsToDownload.size() < 1) return;
-
-        if (username != null && username.charAt(0) == '@') username = username.substring(1);
-
-        if (ContextCompat.checkSelfPermission(context, PERMS[0]) == PackageManager.PERMISSION_GRANTED)
-            batchDownloadImpl(context, username, method, itemsToDownload);
-        else if (context instanceof Activity)
-            ActivityCompat.requestPermissions((Activity) context, PERMS, 8020);
-    }
+    @NonNull
+    private static File getDownloadDir() {
+        File dir = new File(Environment.getExternalStorageDirectory(), "Download");
 
-    private static void batchDownloadImpl(@NonNull final Context context,
-                                          @Nullable final String username,
-                                          final DownloadMethod method,
-                                          final List<? extends BasePostModel> itemsToDownload) {
-        final File dir = getDownloadDir(context, username);
-        if (dir == null) return;
-        boolean checkEachPost = false;
-        switch (method) {
-            case DOWNLOAD_SAVED:
-            case DOWNLOAD_MAIN:
-            case DOWNLOAD_DISCOVER:
-                checkEachPost = true;
-                break;
-        }
-        final int itemsToDownloadSize = itemsToDownload.size();
-        for (int i = 0; i < itemsToDownloadSize; i++) {
-            final BasePostModel selectedItem = itemsToDownload.get(i);
-            if (!checkEachPost) {
-                final boolean isSlider = itemsToDownloadSize > 1;
-                final File saveFile = getDownloadSaveFile(dir,
-                                                          selectedItem.getShortCode(),
-                                                          isSlider ? "_slide_" + (i + 1) : "",
-                                                          selectedItem.getDisplayUrl()
-                );
-                new DownloadAsync(context,
-                                  selectedItem.getDisplayUrl(),
-                                  saveFile,
-                                  file -> selectedItem.setDownloaded(true))
-                        .executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
-            } else {
-                final File finalDir = dir;
-                new PostFetcher(selectedItem.getShortCode(), result -> {
-                    if (result == null) return;
-                    final boolean isSlider = result.getItemType() == MediaItemType.MEDIA_TYPE_SLIDER;
-                    if (isSlider) {
-                        for (int j = 0; j < result.getSliderItems().size(); j++) {
-                            final PostChild model = result.getSliderItems().get(j);
-                            final File saveFile = getDownloadSaveFile(
-                                    finalDir,
-                                    model.getShortCode(),
-                                    "_slide_" + (j + 1),
-                                    model.getDisplayUrl()
-                            );
-                            new DownloadAsync(context,
-                                              model.getDisplayUrl(),
-                                              saveFile,
-                                              file -> {}/*model.setDownloaded(true)*/)
-                                    .executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
-                        }
-                    } else {
-                        final File saveFile = getDownloadSaveFile(
-                                finalDir,
-                                result.getPostId(),
-                                result.getDisplayUrl()
-                        );
-                        new DownloadAsync(context,
-                                          result.getDisplayUrl(),
-                                          saveFile,
-                                          file -> result.setDownloaded(true))
-                                .executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
-                    }
-                }).executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
+        if (Utils.settingsHelper.getBoolean(FOLDER_SAVE_TO)) {
+            final String customPath = Utils.settingsHelper.getString(FOLDER_PATH);
+            if (!TextUtils.isEmpty(customPath)) {
+                dir = new File(customPath);
             }
         }
+        return dir;
     }
 
     @Nullable
     private static File getDownloadDir(@NonNull final Context context, @Nullable final String username) {
-        File dir = new File(Environment.getExternalStorageDirectory(), "Download");
-
-        if (Utils.settingsHelper.getBoolean(FOLDER_SAVE_TO)) {
-            final String customPath = Utils.settingsHelper.getString(FOLDER_PATH);
-            if (!TextUtils.isEmpty(customPath)) dir = new File(customPath);
-        }
+        File dir = getDownloadDir();
 
         if (Utils.settingsHelper.getBoolean(Constants.DOWNLOAD_USER_FOLDER) && !TextUtils.isEmpty(username)) {
             final String finaleUsername = username.startsWith("@") ? username : "@" + username;
@@ -216,6 +137,12 @@ public final class DownloadUtils {
         return new File(finalDir, fileName);
     }
 
+    @NonNull
+    public static File getTempFile() {
+        final File dir = getDownloadDir();
+        return new File(dir, UUID.randomUUID().toString());
+    }
+
     /**
      * Copied from {@link MimeTypeMap#getFileExtensionFromUrl(String)})
      * <p>
diff --git a/app/src/main/java/awais/instagrabber/workers/DownloadWorker.java b/app/src/main/java/awais/instagrabber/workers/DownloadWorker.java
index 7d63e4c6..b3b03829 100644
--- a/app/src/main/java/awais/instagrabber/workers/DownloadWorker.java
+++ b/app/src/main/java/awais/instagrabber/workers/DownloadWorker.java
@@ -26,9 +26,12 @@ import androidx.work.WorkerParameters;
 
 import com.google.gson.Gson;
 import com.google.gson.JsonSyntaxException;
+import com.icafe4j.image.meta.Metadata;
+import com.icafe4j.image.meta.MetadataType;
 
 import java.io.BufferedInputStream;
 import java.io.File;
+import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.io.InputStream;
 import java.net.URL;
@@ -45,6 +48,7 @@ import awais.instagrabber.BuildConfig;
 import awais.instagrabber.R;
 import awais.instagrabber.services.DeleteImageIntentService;
 import awais.instagrabber.utils.Constants;
+import awais.instagrabber.utils.DownloadUtils;
 import awais.instagrabber.utils.TextUtils;
 import awais.instagrabber.utils.Utils;
 import awaisomereport.LogCollector;
@@ -121,7 +125,9 @@ public class DownloadWorker extends Worker {
                           final int total,
                           final String url,
                           final String filePath) {
-        final File outFile = new File(filePath);
+        final boolean isJpg = filePath.endsWith("jpg");
+        // using temp file approach to remove IPTC so that download progress can be reported
+        final File outFile = isJpg ? DownloadUtils.getTempFile() : new File(filePath);
         try {
             final URLConnection urlConnection = new URL(url).openConnection();
             final long fileSize = Build.VERSION.SDK_INT >= 24 ? urlConnection.getContentLengthLong() :
@@ -131,44 +137,32 @@ public class DownloadWorker extends Worker {
                  final FileOutputStream fos = new FileOutputStream(outFile)) {
                 final byte[] buffer = new byte[0x2000];
                 int count;
-                boolean deletedIPTC = false;
                 while ((count = bis.read(buffer, 0, 0x2000)) != -1) {
                     totalRead = totalRead + count;
-                    // if (!deletedIPTC) {
-                    //     int iptcStart = -1;
-                    //     int fbmdStart = -1;
-                    //     int fbmdBytesLen = -1;
-                    //     for (int i = 0; i < buffer.length; ++i) {
-                    //         if (buffer[i] == (byte) 0xFF && buffer[i + 1] == (byte) 0xED)
-                    //             iptcStart = i;
-                    //         else if (buffer[i] == (byte) 'F' && buffer[i + 1] == (byte) 'B'
-                    //                 && buffer[i + 2] == (byte) 'M' && buffer[i + 3] == (byte) 'D') {
-                    //             fbmdStart = i;
-                    //             fbmdBytesLen = buffer[i - 10] << 24 | (buffer[i - 9] & 0xFF) << 16 |
-                    //                     (buffer[i - 8] & 0xFF) << 8 | (buffer[i - 7] & 0xFF) |
-                    //                     (buffer[i - 6] & 0xFF);
-                    //             break;
-                    //         }
-                    //     }
-                    //     if (iptcStart != -1 && fbmdStart != -1 && fbmdBytesLen != -1) {
-                    //         final int fbmdDataLen = (iptcStart + (fbmdStart - iptcStart) + (fbmdBytesLen - iptcStart)) - 4;
-                    //         fos.write(buffer, 0, iptcStart);
-                    //         fos.write(buffer, fbmdDataLen + iptcStart, count - fbmdDataLen - iptcStart);
-                    //         // setProgressAsync(new Data.Builder().putString(URL, url)
-                    //         //                                    .putFloat(PROGRESS, totalRead * 100f / fileSize)
-                    //         //                                    .build());
-                    //         updateDownloadProgress(notificationId, position, total, totalRead * 100f / fileSize);
-                    //         deletedIPTC = true;
-                    //         continue;
-                    //     }
-                    // }
                     fos.write(buffer, 0, count);
-                    // setProgressAsync(new Data.Builder().putString(URL, url)
-                    //                                    .putFloat(PROGRESS, totalRead * 100f / fileSize)
-                    //                                    .build());
+                    setProgressAsync(new Data.Builder().putString(URL, url)
+                                                       .putFloat(PROGRESS, totalRead * 100f / fileSize)
+                                                       .build());
                     updateDownloadProgress(notificationId, position, total, totalRead * 100f / fileSize);
                 }
                 fos.flush();
+            } catch (final Exception e) {
+                Log.e(TAG, "Error while writing data from url: " + url + " to file: " + outFile.getAbsolutePath(), e);
+            }
+            if (isJpg) {
+                final File finalFile = new File(filePath);
+                try (FileInputStream bis = new FileInputStream(outFile);
+                     FileOutputStream fos = new FileOutputStream(finalFile)) {
+                    Metadata.removeMetadata(bis, fos, MetadataType.IPTC);
+                } catch (Exception e) {
+                    Log.e(TAG, "Error while removing iptc: url: " + url
+                            + ", tempFile: " + outFile.getAbsolutePath()
+                            + ", finalFile: " + finalFile.getAbsolutePath(), e);
+                }
+                final boolean deleted = outFile.delete();
+                if (!deleted) {
+                    Log.w(TAG, "download: tempFile not deleted!");
+                }
             }
         } catch (final Exception e) {
             Log.e(TAG, "Error while downloading: " + url, e);
@@ -176,23 +170,6 @@ public class DownloadWorker extends Worker {
         updateDownloadProgress(notificationId, position, total, 100);
     }
 
-    // private void showCompleteNotification(final String url) {
-    //     final Context context = getApplicationContext();
-    //     final Notification notification = new NotificationCompat.Builder(context, Constants.DOWNLOAD_CHANNEL_ID)
-    //             .setCategory(NotificationCompat.CATEGORY_STATUS)
-    //             .setSmallIcon(R.drawable.ic_download)
-    //             .setAutoCancel(false)
-    //             .setOnlyAlertOnce(true)
-    //             .setContentTitle(context.getString(R.string.downloader_complete))
-    //             .setGroup(DOWNLOAD_GROUP)
-    //             .build();
-    //     final int id = Math.abs(url.hashCode());
-    //     Log.d(TAG, "showCompleteNotification: cancelling: " + id);
-    //     notificationManager.cancel(id);
-    //     // WorkManager.getInstance(getApplicationContext()).
-    //     notificationManager.notify(id + 1, notification);
-    // }
-
     private void updateDownloadProgress(final int notificationId,
                                         final int position,
                                         final int total,
diff --git a/build.gradle b/build.gradle
index 18c01d6e..da4ac225 100755
--- a/build.gradle
+++ b/build.gradle
@@ -16,6 +16,7 @@ allprojects {
         google()
         jcenter()
         mavenCentral()
+        maven { url 'http://maven.geotoolkit.org/' }
         maven { url 'https://jitpack.io' }
     }
 }