do not touch pictures that are already in the right format

fixed #522

6 files changed, 218 insertions, 51 deletions

diff --git a/src/main/java/eu/siacs/conversations/http/HttpUploadConnection.java b/src/main/java/eu/siacs/conversations/http/HttpUploadConnection.java
index 69e9212e..2e545842 100644
--- a/src/main/java/eu/siacs/conversations/http/HttpUploadConnection.java
+++ b/src/main/java/eu/siacs/conversations/http/HttpUploadConnection.java
@@ -7,6 +7,7 @@ import android.os.PowerManager;
 import android.util.Log;
 import android.util.Pair;
 
+import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
@@ -104,7 +105,13 @@ public class HttpUploadConnection implements Transferable {
 			mXmppConnectionService.getRNG().nextBytes(this.key);
 			this.file.setKeyAndIv(this.key);
 		}
-		Pair<InputStream,Integer> pair = AbstractConnectionManager.createInputStream(file,true);
+		Pair<InputStream,Integer> pair;
+		try {
+			pair = AbstractConnectionManager.createInputStream(file, true);
+		} catch (FileNotFoundException e) {
+			fail();
+			return;
+		}
 		this.file.setExpectedSize(pair.second);
 		this.mFileInputStream = pair.first;
 		Jid host = account.getXmppConnection().findDiscoItemByFeature(Xmlns.HTTP_UPLOAD);
diff --git a/src/main/java/eu/siacs/conversations/persistance/FileBackend.java b/src/main/java/eu/siacs/conversations/persistance/FileBackend.java
index 13bbb276..931158e5 100644
--- a/src/main/java/eu/siacs/conversations/persistance/FileBackend.java
+++ b/src/main/java/eu/siacs/conversations/persistance/FileBackend.java
@@ -39,6 +39,7 @@ import eu.siacs.conversations.entities.Transferable;
 import eu.siacs.conversations.services.XmppConnectionService;
 import eu.siacs.conversations.utils.CryptoHelper;
 import eu.siacs.conversations.utils.ExifHelper;
+import eu.siacs.conversations.utils.FileUtils;
 import eu.siacs.conversations.xmpp.pep.Avatar;
 
 public class FileBackend {
@@ -126,25 +127,25 @@ public class FileBackend {
 		return Bitmap.createBitmap(bitmap, 0, 0, w, h, mtx, true);
 	}
 
-	public String getOriginalPath(Uri uri) {
-		String path = null;
-		if (uri.getScheme().equals("file")) {
-			return uri.getPath();
-		} else if (uri.toString().startsWith("content://media/")) {
-			String[] projection = {MediaStore.MediaColumns.DATA};
-			Cursor metaCursor = mXmppConnectionService.getContentResolver().query(uri,
-					projection, null, null, null);
-			if (metaCursor != null) {
-				try {
-					if (metaCursor.moveToFirst()) {
-						path = metaCursor.getString(0);
-					}
-				} finally {
-					metaCursor.close();
-				}
-			}
+	public boolean useImageAsIs(Uri uri) {
+		String path = getOriginalPath(uri);
+		if (path == null) {
+			return false;
 		}
-		return path;
+		Log.d(Config.LOGTAG,"using image as is. path: "+path);
+		BitmapFactory.Options options = new BitmapFactory.Options();
+		options.inJustDecodeBounds = true;
+		try {
+			BitmapFactory.decodeStream(mXmppConnectionService.getContentResolver().openInputStream(uri), null, options);
+			return (options.outWidth <= Config.IMAGE_SIZE && options.outHeight <= Config.IMAGE_SIZE && options.outMimeType.contains(Config.IMAGE_FORMAT.name().toLowerCase()));
+		} catch (FileNotFoundException e) {
+			return false;
+		}
+	}
+
+	public String getOriginalPath(Uri uri) {
+		Log.d(Config.LOGTAG,"get original path for uri: "+uri.toString());
+		return FileUtils.getPath(mXmppConnectionService,uri);
 	}
 
 	public DownloadableFile copyFileToPrivateStorage(Message message, Uri uri) throws FileCopyException {
diff --git a/src/main/java/eu/siacs/conversations/services/AbstractConnectionManager.java b/src/main/java/eu/siacs/conversations/services/AbstractConnectionManager.java
index 1b49e365..5def05dd 100644
--- a/src/main/java/eu/siacs/conversations/services/AbstractConnectionManager.java
+++ b/src/main/java/eu/siacs/conversations/services/AbstractConnectionManager.java
@@ -51,17 +51,13 @@ public class AbstractConnectionManager {
 		}
 	}
 
-	public static Pair<InputStream,Integer> createInputStream(DownloadableFile file, boolean gcm) {
+	public static Pair<InputStream,Integer> createInputStream(DownloadableFile file, boolean gcm) throws FileNotFoundException {
 		FileInputStream is;
 		int size;
-		try {
-			is = new FileInputStream(file);
-			size = (int) file.getSize();
-			if (file.getKey() == null) {
-				return new Pair<InputStream,Integer>(is,size);
-			}
-		} catch (FileNotFoundException e) {
-			return null;
+		is = new FileInputStream(file);
+		size = (int) file.getSize();
+		if (file.getKey() == null) {
+			return new Pair<InputStream,Integer>(is,size);
 		}
 		try {
 			if (gcm) {
diff --git a/src/main/java/eu/siacs/conversations/services/XmppConnectionService.java b/src/main/java/eu/siacs/conversations/services/XmppConnectionService.java
index ffe587d6..ed3bb879 100644
--- a/src/main/java/eu/siacs/conversations/services/XmppConnectionService.java
+++ b/src/main/java/eu/siacs/conversations/services/XmppConnectionService.java
@@ -404,8 +404,12 @@ public class XmppConnectionService extends Service implements OnPhoneContactsLoa
 		}
 	}
 
-	public void attachImageToConversation(final Conversation conversation,
-			final Uri uri, final UiCallback<Message> callback) {
+	public void attachImageToConversation(final Conversation conversation, final Uri uri, final UiCallback<Message> callback) {
+		if (getFileBackend().useImageAsIs(uri)) {
+			Log.d(Config.LOGTAG,"using image as is");
+			attachFileToConversation(conversation, uri, callback);
+			return;
+		}
 		final Message message;
 		if (conversation.getNextEncryption() == Message.ENCRYPTION_PGP) {
 			message = new Message(conversation, "", Message.ENCRYPTION_DECRYPTED);
@@ -855,7 +859,7 @@ public class XmppConnectionService extends Service implements OnPhoneContactsLoa
 		} else {
 			Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": fetching roster");
 		}
-		iqPacket.query(Xmlns.ROSTER).setAttribute("ver",account.getRosterVersion());
+		iqPacket.query(Xmlns.ROSTER).setAttribute("ver", account.getRosterVersion());
 		sendIqPacket(account,iqPacket,mIqParser);
 	}
 
@@ -1000,6 +1004,10 @@ public class XmppConnectionService extends Service implements OnPhoneContactsLoa
 			public void onMessageFound(Message message) {
 				if (!getFileBackend().isFileAvailable(message)) {
 					message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
+					final int s = message.getStatus();
+					if(s == Message.STATUS_WAITING || s == Message.STATUS_OFFERED || s == Message.STATUS_UNSEND) {
+						markMessage(message,Message.STATUS_SEND_FAILED);
+					}
 				}
 			}
 		});
@@ -1011,7 +1019,12 @@ public class XmppConnectionService extends Service implements OnPhoneContactsLoa
 			if (message != null) {
 				if (!getFileBackend().isFileAvailable(message)) {
 					message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
-					updateConversationUi();
+					final int s = message.getStatus();
+					if(s == Message.STATUS_WAITING || s == Message.STATUS_OFFERED || s == Message.STATUS_UNSEND) {
+						markMessage(message,Message.STATUS_SEND_FAILED);
+					} else {
+						updateConversationUi();
+					}
 				}
 				return;
 			}
diff --git a/src/main/java/eu/siacs/conversations/utils/FileUtils.java b/src/main/java/eu/siacs/conversations/utils/FileUtils.java
new file mode 100644
index 00000000..a13300d4
--- /dev/null
+++ b/src/main/java/eu/siacs/conversations/utils/FileUtils.java
@@ -0,0 +1,144 @@
+package eu.siacs.conversations.utils;
+
+import android.annotation.SuppressLint;
+import android.content.ContentUris;
+import android.content.Context;
+import android.database.Cursor;
+import android.net.Uri;
+import android.os.Build;
+import android.os.Environment;
+import android.provider.DocumentsContract;
+import android.provider.MediaStore;
+
+public class FileUtils {
+
+	/**
+	 * Get a file path from a Uri. This will get the the path for Storage Access
+	 * Framework Documents, as well as the _data field for the MediaStore and
+	 * other file-based ContentProviders.
+	 *
+	 * @param context The context.
+	 * @param uri     The Uri to query.
+	 * @author paulburke
+	 */
+	@SuppressLint("NewApi")
+	public static String getPath(final Context context, final Uri uri) {
+
+		final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
+
+		// DocumentProvider
+		if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
+			// ExternalStorageProvider
+			if (isExternalStorageDocument(uri)) {
+				final String docId = DocumentsContract.getDocumentId(uri);
+				final String[] split = docId.split(":");
+				final String type = split[0];
+
+				if ("primary".equalsIgnoreCase(type)) {
+					return Environment.getExternalStorageDirectory() + "/" + split[1];
+				}
+
+				// TODO handle non-primary volumes
+			}
+			// DownloadsProvider
+			else if (isDownloadsDocument(uri)) {
+
+				final String id = DocumentsContract.getDocumentId(uri);
+				final Uri contentUri = ContentUris.withAppendedId(
+						Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
+
+				return getDataColumn(context, contentUri, null, null);
+			}
+			// MediaProvider
+			else if (isMediaDocument(uri)) {
+				final String docId = DocumentsContract.getDocumentId(uri);
+				final String[] split = docId.split(":");
+				final String type = split[0];
+
+				Uri contentUri = null;
+				if ("image".equals(type)) {
+					contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
+				} else if ("video".equals(type)) {
+					contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
+				} else if ("audio".equals(type)) {
+					contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
+				}
+
+				final String selection = "_id=?";
+				final String[] selectionArgs = new String[]{
+						split[1]
+				};
+
+				return getDataColumn(context, contentUri, selection, selectionArgs);
+			}
+		}
+		// MediaStore (and general)
+		else if ("content".equalsIgnoreCase(uri.getScheme())) {
+			return getDataColumn(context, uri, null, null);
+		}
+		// File
+		else if ("file".equalsIgnoreCase(uri.getScheme())) {
+			return uri.getPath();
+		}
+
+		return null;
+	}
+
+	/**
+	 * Get the value of the data column for this Uri. This is useful for
+	 * MediaStore Uris, and other file-based ContentProviders.
+	 *
+	 * @param context       The context.
+	 * @param uri           The Uri to query.
+	 * @param selection     (Optional) Filter used in the query.
+	 * @param selectionArgs (Optional) Selection arguments used in the query.
+	 * @return The value of the _data column, which is typically a file path.
+	 */
+	public static String getDataColumn(Context context, Uri uri, String selection,
+									   String[] selectionArgs) {
+
+		Cursor cursor = null;
+		final String column = "_data";
+		final String[] projection = {
+				column
+		};
+
+		try {
+			cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs,
+					null);
+			if (cursor != null && cursor.moveToFirst()) {
+				final int column_index = cursor.getColumnIndexOrThrow(column);
+				return cursor.getString(column_index);
+			}
+		} finally {
+			if (cursor != null)
+				cursor.close();
+		}
+		return null;
+	}
+
+
+	/**
+	 * @param uri The Uri to check.
+	 * @return Whether the Uri authority is ExternalStorageProvider.
+	 */
+	public static boolean isExternalStorageDocument(Uri uri) {
+		return "com.android.externalstorage.documents".equals(uri.getAuthority());
+	}
+
+	/**
+	 * @param uri The Uri to check.
+	 * @return Whether the Uri authority is DownloadsProvider.
+	 */
+	public static boolean isDownloadsDocument(Uri uri) {
+		return "com.android.providers.downloads.documents".equals(uri.getAuthority());
+	}
+
+	/**
+	 * @param uri The Uri to check.
+	 * @return Whether the Uri authority is MediaProvider.
+	 */
+	public static boolean isMediaDocument(Uri uri) {
+		return "com.android.providers.media.documents".equals(uri.getAuthority());
+	}
+}
diff --git a/src/main/java/eu/siacs/conversations/xmpp/jingle/JingleConnection.java b/src/main/java/eu/siacs/conversations/xmpp/jingle/JingleConnection.java
index be1caa56..7b140842 100644
--- a/src/main/java/eu/siacs/conversations/xmpp/jingle/JingleConnection.java
+++ b/src/main/java/eu/siacs/conversations/xmpp/jingle/JingleConnection.java
@@ -5,6 +5,7 @@ import android.net.Uri;
 import android.util.Log;
 import android.util.Pair;
 
+import java.io.FileNotFoundException;
 import java.io.InputStream;
 import java.io.OutputStream;
 import java.util.ArrayList;
@@ -413,26 +414,31 @@ public class JingleConnection implements Transferable {
 			content.setTransportId(this.transportId);
 			this.file = this.mXmppConnectionService.getFileBackend().getFile(message, false);
 			Pair<InputStream,Integer> pair;
-			if (message.getEncryption() == Message.ENCRYPTION_OTR) {
-				Conversation conversation = this.message.getConversation();
-				if (!this.mXmppConnectionService.renewSymmetricKey(conversation)) {
-					Log.d(Config.LOGTAG,account.getJid().toBareJid()+": could not set symmetric key");
-					cancel();
+			try {
+				if (message.getEncryption() == Message.ENCRYPTION_OTR) {
+					Conversation conversation = this.message.getConversation();
+					if (!this.mXmppConnectionService.renewSymmetricKey(conversation)) {
+						Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": could not set symmetric key");
+						cancel();
+					}
+					this.file.setKeyAndIv(conversation.getSymmetricKey());
+					pair = AbstractConnectionManager.createInputStream(this.file, false);
+					this.file.setExpectedSize(pair.second);
+					content.setFileOffer(this.file, true);
+				} else if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL) {
+					this.file.setKey(mXmppAxolotlMessage.getInnerKey());
+					this.file.setIv(mXmppAxolotlMessage.getIV());
+					pair = AbstractConnectionManager.createInputStream(this.file, true);
+					this.file.setExpectedSize(pair.second);
+					content.setFileOffer(this.file, false).addChild(mXmppAxolotlMessage.toElement());
+				} else {
+					pair = AbstractConnectionManager.createInputStream(this.file, false);
+					this.file.setExpectedSize(pair.second);
+					content.setFileOffer(this.file, false);
 				}
-				this.file.setKeyAndIv(conversation.getSymmetricKey());
-				pair = AbstractConnectionManager.createInputStream(this.file,false);
-				this.file.setExpectedSize(pair.second);
-				content.setFileOffer(this.file, true);
-			} else if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL) {
-				this.file.setKey(mXmppAxolotlMessage.getInnerKey());
-				this.file.setIv(mXmppAxolotlMessage.getIV());
-				pair = AbstractConnectionManager.createInputStream(this.file,true);
-				this.file.setExpectedSize(pair.second);
-				content.setFileOffer(this.file, false).addChild(mXmppAxolotlMessage.toElement());
-			} else {
-				pair = AbstractConnectionManager.createInputStream(this.file,false);
-				this.file.setExpectedSize(pair.second);
-				content.setFileOffer(this.file, false);
+			} catch (FileNotFoundException e) {
+				cancel();
+				return;
 			}
 			this.mFileInputStream = pair.first;
 			this.transportId = this.mJingleConnectionManager.nextRandomId();