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Unverified Commit 593a0c46 authored by akwizgran's avatar akwizgran
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Improve handling of missing and invalid attachments.

parent ed20b2d8
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Showing with 109 additions and 112 deletions
briar-android/src/androidTestOfficial/java/org/briarproject/briar/android/attachment/AttachmentRetrieverIntegrationTest.java
View file @ 593a0c46
......@@ -55,7 +55,7 @@ public class AttachmentRetrieverIntegrationTest {
AttachmentHeader h = new AttachmentHeader(msgId, "image/jpeg");
InputStream is = getUrlInputStream(smallKitten);
Attachment a = new Attachment(h, is);
AttachmentItem item = retriever.getAttachmentItem(h, a, true);
AttachmentItem item = retriever.getAttachmentItem(a, true);
assertEquals(msgId, item.getMessageId());
assertEquals(160, item.getWidth());
assertEquals(240, item.getHeight());
......@@ -71,7 +71,7 @@ public class AttachmentRetrieverIntegrationTest {
AttachmentHeader h = new AttachmentHeader(msgId, "image/jpeg");
InputStream is = getUrlInputStream(originalKitten);
Attachment a = new Attachment(h, is);
AttachmentItem item = retriever.getAttachmentItem(h, a, true);
AttachmentItem item = retriever.getAttachmentItem(a, true);
assertEquals(msgId, item.getMessageId());
assertEquals(1728, item.getWidth());
assertEquals(2592, item.getHeight());
......@@ -87,7 +87,7 @@ public class AttachmentRetrieverIntegrationTest {
AttachmentHeader h = new AttachmentHeader(msgId, "image/png");
InputStream is = getUrlInputStream(pngKitten);
Attachment a = new Attachment(h, is);
AttachmentItem item = retriever.getAttachmentItem(h, a, true);
AttachmentItem item = retriever.getAttachmentItem(a, true);
assertEquals(msgId, item.getMessageId());
assertEquals(737, item.getWidth());
assertEquals(510, item.getHeight());
......@@ -103,7 +103,7 @@ public class AttachmentRetrieverIntegrationTest {
AttachmentHeader h = new AttachmentHeader(msgId, "image/jpeg");
InputStream is = getUrlInputStream(uberGif);
Attachment a = new Attachment(h, is);
AttachmentItem item = retriever.getAttachmentItem(h, a, true);
AttachmentItem item = retriever.getAttachmentItem(a, true);
assertEquals(1, item.getWidth());
assertEquals(1, item.getHeight());
assertEquals(dimensions.minHeight, item.getThumbnailWidth());
......@@ -118,7 +118,7 @@ public class AttachmentRetrieverIntegrationTest {
AttachmentHeader h = new AttachmentHeader(msgId, "image/jpeg");
InputStream is = getUrlInputStream(lottaPixel);
Attachment a = new Attachment(h, is);
AttachmentItem item = retriever.getAttachmentItem(h, a, true);
AttachmentItem item = retriever.getAttachmentItem(a, true);
assertEquals(64250, item.getWidth());
assertEquals(64250, item.getHeight());
assertEquals(dimensions.maxWidth, item.getThumbnailWidth());
......@@ -133,7 +133,7 @@ public class AttachmentRetrieverIntegrationTest {
AttachmentHeader h = new AttachmentHeader(msgId, "image/jpeg");
InputStream is = getUrlInputStream(imageIoCrash);
Attachment a = new Attachment(h, is);
AttachmentItem item = retriever.getAttachmentItem(h, a, true);
AttachmentItem item = retriever.getAttachmentItem(a, true);
assertEquals(1184, item.getWidth());
assertEquals(448, item.getHeight());
assertEquals(dimensions.maxWidth, item.getThumbnailWidth());
......@@ -148,7 +148,7 @@ public class AttachmentRetrieverIntegrationTest {
AttachmentHeader h = new AttachmentHeader(msgId, "image/jpeg");
InputStream is = getUrlInputStream(gimpCrash);
Attachment a = new Attachment(h, is);
AttachmentItem item = retriever.getAttachmentItem(h, a, true);
AttachmentItem item = retriever.getAttachmentItem(a, true);
assertEquals(1, item.getWidth());
assertEquals(1, item.getHeight());
assertEquals(dimensions.minHeight, item.getThumbnailWidth());
......@@ -163,7 +163,7 @@ public class AttachmentRetrieverIntegrationTest {
AttachmentHeader h = new AttachmentHeader(msgId, "image/jpeg");
InputStream is = getUrlInputStream(optiPngAfl);
Attachment a = new Attachment(h, is);
AttachmentItem item = retriever.getAttachmentItem(h, a, true);
AttachmentItem item = retriever.getAttachmentItem(a, true);
assertEquals(32, item.getWidth());
assertEquals(32, item.getHeight());
assertEquals(dimensions.minHeight, item.getThumbnailWidth());
......@@ -178,7 +178,7 @@ public class AttachmentRetrieverIntegrationTest {
AttachmentHeader h = new AttachmentHeader(msgId, "image/jpeg");
InputStream is = getUrlInputStream(librawError);
Attachment a = new Attachment(h, is);
AttachmentItem item = retriever.getAttachmentItem(h, a, true);
AttachmentItem item = retriever.getAttachmentItem(a, true);
assertTrue(item.hasError());
}
......@@ -187,7 +187,7 @@ public class AttachmentRetrieverIntegrationTest {
AttachmentHeader h = new AttachmentHeader(msgId, "image/gif");
InputStream is = getAssetInputStream("animated.gif");
Attachment a = new Attachment(h, is);
AttachmentItem item = retriever.getAttachmentItem(h, a, true);
AttachmentItem item = retriever.getAttachmentItem(a, true);
assertEquals(65535, item.getWidth());
assertEquals(65535, item.getHeight());
assertEquals(dimensions.maxWidth, item.getThumbnailWidth());
......@@ -202,7 +202,7 @@ public class AttachmentRetrieverIntegrationTest {
AttachmentHeader h = new AttachmentHeader(msgId, "image/gif");
InputStream is = getAssetInputStream("animated2.gif");
Attachment a = new Attachment(h, is);
AttachmentItem item = retriever.getAttachmentItem(h, a, true);
AttachmentItem item = retriever.getAttachmentItem(a, true);
assertEquals(10000, item.getWidth());
assertEquals(10000, item.getHeight());
assertEquals(dimensions.maxWidth, item.getThumbnailWidth());
......@@ -217,7 +217,7 @@ public class AttachmentRetrieverIntegrationTest {
AttachmentHeader h = new AttachmentHeader(msgId, "image/gif");
InputStream is = getAssetInputStream("error_large.gif");
Attachment a = new Attachment(h, is);
AttachmentItem item = retriever.getAttachmentItem(h, a, true);
AttachmentItem item = retriever.getAttachmentItem(a, true);
assertEquals(16384, item.getWidth());
assertEquals(16384, item.getHeight());
assertEquals(dimensions.maxWidth, item.getThumbnailWidth());
......@@ -232,7 +232,7 @@ public class AttachmentRetrieverIntegrationTest {
AttachmentHeader h = new AttachmentHeader(msgId, "image/jpeg");
InputStream is = getAssetInputStream("error_high.jpg");
Attachment a = new Attachment(h, is);
AttachmentItem item = retriever.getAttachmentItem(h, a, true);
AttachmentItem item = retriever.getAttachmentItem(a, true);
assertEquals(1, item.getWidth());
assertEquals(10000, item.getHeight());
assertEquals(dimensions.minWidth, item.getThumbnailWidth());
......@@ -247,7 +247,7 @@ public class AttachmentRetrieverIntegrationTest {
AttachmentHeader h = new AttachmentHeader(msgId, "image/jpeg");
InputStream is = getAssetInputStream("error_wide.jpg");
Attachment a = new Attachment(h, is);
AttachmentItem item = retriever.getAttachmentItem(h, a, true);
AttachmentItem item = retriever.getAttachmentItem(a, true);
assertEquals(1920, item.getWidth());
assertEquals(1, item.getHeight());
assertEquals(dimensions.maxWidth, item.getThumbnailWidth());
......
briar-android/src/main/java/org/briarproject/briar/android/attachment/AttachmentCreator.java
View file @ 593a0c46
......@@ -98,7 +98,7 @@ public class AttachmentCreator {
// get and cache AttachmentItem for ImagePreview
try {
Attachment a = retriever.getMessageAttachment(h);
AttachmentItem item = retriever.getAttachmentItem(h, a, needsSize);
AttachmentItem item = retriever.getAttachmentItem(a, needsSize);
if (item.hasError()) throw new IOException();
AttachmentItemResult itemResult =
new AttachmentItemResult(uri, item);
......
briar-android/src/main/java/org/briarproject/briar/android/attachment/AttachmentRetriever.java
View file @ 593a0c46
......@@ -9,8 +9,6 @@ import android.webkit.MimeTypeMap;
import com.bumptech.glide.util.MarkEnforcingInputStream;
import org.briarproject.bramble.api.Pair;
import org.briarproject.bramble.api.db.DatabaseExecutor;
import org.briarproject.bramble.api.db.DbException;
import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
import org.briarproject.bramble.api.sync.MessageId;
......@@ -22,7 +20,6 @@ import org.briarproject.briar.api.messaging.MessagingManager;
import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
......@@ -38,9 +35,7 @@ import static android.support.media.ExifInterface.TAG_ORIENTATION;
import static java.util.logging.Level.WARNING;
import static java.util.logging.Logger.getLogger;
import static org.briarproject.bramble.util.IoUtils.tryToClose;
import static org.briarproject.bramble.util.LogUtils.logDuration;
import static org.briarproject.bramble.util.LogUtils.logException;
import static org.briarproject.bramble.util.LogUtils.now;
@NotNullByDefault
public class AttachmentRetriever {
......@@ -93,7 +88,8 @@ public class AttachmentRetriever {
});
}
public void cachePut(MessageId messageId, List<AttachmentItem> attachments) {
public void cachePut(MessageId messageId,
List<AttachmentItem> attachments) {
attachmentCache.put(messageId, attachments);
}
......@@ -102,47 +98,17 @@ public class AttachmentRetriever {
return attachmentCache.get(messageId);
}
@DatabaseExecutor
public List<Pair<AttachmentHeader, Attachment>> getMessageAttachments(
List<AttachmentHeader> headers) throws DbException {
long start = now();
List<Pair<AttachmentHeader, Attachment>> attachments =
new ArrayList<>(headers.size());
for (AttachmentHeader h : headers) {
Attachment a = messagingManager.getAttachment(h);
attachments.add(new Pair<>(h, a));
}
logDuration(LOG, "Loading attachments", start);
return attachments;
}
Attachment getMessageAttachment(AttachmentHeader h) throws DbException {
public Attachment getMessageAttachment(AttachmentHeader h)
throws DbException {
return messagingManager.getAttachment(h);
}
/**
* Creates {@link AttachmentItem}s from the passed headers and Attachments.
* <p>
* Note: This closes the {@link Attachment}'s {@link InputStream}.
*/
public List<AttachmentItem> getAttachmentItems(
List<Pair<AttachmentHeader, Attachment>> attachments) {
boolean needsSize = attachments.size() == 1;
List<AttachmentItem> items = new ArrayList<>(attachments.size());
for (Pair<AttachmentHeader, Attachment> a : attachments) {
AttachmentItem item =
getAttachmentItem(a.getFirst(), a.getSecond(), needsSize);
items.add(item);
}
return items;
}
/**
* Creates an {@link AttachmentItem} from the {@link Attachment}'s
* {@link InputStream} which will be closed when this method returns.
*/
AttachmentItem getAttachmentItem(AttachmentHeader h, Attachment a,
boolean needsSize) {
public AttachmentItem getAttachmentItem(Attachment a, boolean needsSize) {
AttachmentHeader h = a.getHeader();
if (!needsSize) {
String extension =
imageHelper.getExtensionFromMimeType(h.getContentType());
......
briar-android/src/main/java/org/briarproject/briar/android/conversation/ConversationActivity.java
View file @ 593a0c46
......@@ -37,6 +37,7 @@ import org.briarproject.bramble.api.contact.event.ContactRemovedEvent;
import org.briarproject.bramble.api.db.DatabaseExecutor;
import org.briarproject.bramble.api.db.DbException;
import org.briarproject.bramble.api.db.NoSuchContactException;
import org.briarproject.bramble.api.db.NoSuchMessageException;
import org.briarproject.bramble.api.event.Event;
import org.briarproject.bramble.api.event.EventBus;
import org.briarproject.bramble.api.event.EventListener;
......@@ -107,6 +108,7 @@ import static android.support.v7.util.SortedList.INVALID_POSITION;
import static android.view.Gravity.RIGHT;
import static android.widget.Toast.LENGTH_SHORT;
import static java.util.Collections.emptyList;
import static java.util.Collections.singletonList;
import static java.util.Collections.sort;
import static java.util.Objects.requireNonNull;
import static java.util.logging.Level.INFO;
......@@ -434,29 +436,36 @@ public class ConversationActivity extends BriarActivity
});
}
private void eagerlyLoadMessageSize(PrivateMessageHeader h)
throws DbException {
MessageId id = h.getId();
// If the message has text, load it
if (h.hasText()) {
String text = textCache.get(id);
if (text == null) {
LOG.info("Eagerly loading text for latest message");
text = messagingManager.getMessageText(id);
textCache.put(id, requireNonNull(text));
private void eagerlyLoadMessageSize(PrivateMessageHeader h) {
try {
MessageId id = h.getId();
// If the message has text, load it
if (h.hasText()) {
String text = textCache.get(id);
if (text == null) {
LOG.info("Eagerly loading text for latest message");
text = messagingManager.getMessageText(id);
textCache.put(id, requireNonNull(text));
}
}
}
// If the message has a single image, load its size - for multiple
// images we use a grid so the size is fixed
if (h.getAttachmentHeaders().size() == 1) {
List<AttachmentItem> items = attachmentRetriever.cacheGet(id);
if (items == null) {
LOG.info("Eagerly loading image size for latest message");
items = attachmentRetriever.getAttachmentItems(
attachmentRetriever.getMessageAttachments(
h.getAttachmentHeaders()));
attachmentRetriever.cachePut(id, items);
// If the message has a single image, load its size - for multiple
// images we use a grid so the size is fixed
List<AttachmentHeader> headers = h.getAttachmentHeaders();
if (headers.size() == 1) {
List<AttachmentItem> items = attachmentRetriever.cacheGet(id);
if (items == null) {
LOG.info("Eagerly loading image size for latest message");
Attachment a = attachmentRetriever
.getMessageAttachment(headers.get(0));
AttachmentItem item =
attachmentRetriever.getAttachmentItem(a, true);
attachmentRetriever.cachePut(id, singletonList(item));
}
}
} catch (NoSuchMessageException e) {
LOG.info("Attachment not received yet");
} catch (DbException e) {
logException(LOG, WARNING, e);
}
}
......@@ -536,14 +545,23 @@ public class ConversationActivity extends BriarActivity
private void loadMessageAttachments(MessageId messageId,
List<AttachmentHeader> headers) {
// TODO: Use placeholders for missing/invalid attachments
runOnDbThread(() -> {
try {
List<Pair<AttachmentHeader, Attachment>> attachments =
attachmentRetriever.getMessageAttachments(headers);
// TODO move getting the items off to IoExecutor, if size == 1
List<AttachmentItem> items =
attachmentRetriever.getAttachmentItems(attachments);
boolean needsSize = headers.size() == 1;
List<AttachmentItem> items = new ArrayList<>(headers.size());
for (AttachmentHeader h : headers) {
Attachment a = attachmentRetriever.getMessageAttachment(h);
AttachmentItem item =
attachmentRetriever.getAttachmentItem(a, needsSize);
items.add(item);
}
// TODO: Don't cache items unless all are present and valid
attachmentRetriever.cachePut(messageId, items);
displayMessageAttachments(messageId, items);
} catch (NoSuchMessageException e) {
LOG.info("Attachment not received yet");
} catch (DbException e) {
logException(LOG, WARNING, e);
}
......@@ -553,7 +571,6 @@ public class ConversationActivity extends BriarActivity
private void displayMessageAttachments(MessageId m,
List<AttachmentItem> items) {
runOnUiThreadUnlessDestroyed(() -> {
attachmentRetriever.cachePut(m, items);
Pair<Integer, ConversationMessageItem> pair =
adapter.getMessageItem(m);
if (pair != null) {
......@@ -567,6 +584,7 @@ public class ConversationActivity extends BriarActivity
@Override
public void eventOccurred(Event e) {
// TODO: Load missing attachments when they arrive
if (e instanceof ContactRemovedEvent) {
ContactRemovedEvent c = (ContactRemovedEvent) e;
if (c.getContactId().equals(contactId)) {
......
briar-android/src/test/java/org/briarproject/briar/android/attachment/AttachmentRetrieverTest.java
View file @ 593a0c46
......@@ -9,14 +9,11 @@ import org.briarproject.briar.api.messaging.MessagingManager;
import org.jmock.Expectations;
import org.junit.Test;
import java.io.BufferedInputStream;
import java.io.ByteArrayInputStream;
import java.io.InputStream;
import static org.briarproject.bramble.test.TestUtils.getRandomBytes;
import static org.briarproject.bramble.test.TestUtils.getRandomId;
import static org.briarproject.bramble.util.StringUtils.getRandomString;
import static org.briarproject.briar.api.messaging.MessagingConstants.MAX_CONTENT_TYPE_BYTES;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
......@@ -27,35 +24,26 @@ public class AttachmentRetrieverTest extends BrambleMockTestCase {
100, 50, 200, 75, 300
);
private final MessageId msgId = new MessageId(getRandomId());
private final String mimeType = getRandomString(MAX_CONTENT_TYPE_BYTES);
private final AttachmentHeader header =
new AttachmentHeader(msgId, mimeType);
private final Attachment attachment = new Attachment(header,
new BufferedInputStream(
new ByteArrayInputStream(getRandomBytes(42))));
private final MessagingManager messagingManager =
context.mock(MessagingManager.class);
private final ImageHelper imageHelper = context.mock(ImageHelper.class);
private final AttachmentRetriever controller =
new AttachmentRetriever(
messagingManager,
dimensions,
imageHelper
);
private final AttachmentRetriever retriever = new AttachmentRetriever(
messagingManager,
dimensions,
imageHelper
);
@Test
public void testNoSize() {
String mimeType = "image/jpeg";
AttachmentHeader h = getAttachmentHeader(mimeType);
Attachment attachment = getAttachment(mimeType);
context.checking(new Expectations() {{
oneOf(imageHelper).getExtensionFromMimeType(mimeType);
will(returnValue("jpg"));
}});
AttachmentItem item =
controller.getAttachmentItem(h, attachment, false);
AttachmentItem item = retriever.getAttachmentItem(attachment, false);
assertEquals(mimeType, item.getMimeType());
assertEquals("jpg", item.getExtension());
assertFalse(item.hasError());
......@@ -64,22 +52,21 @@ public class AttachmentRetrieverTest extends BrambleMockTestCase {
@Test
public void testNoSizeWrongMimeTypeProducesError() {
String mimeType = "application/octet-stream";
AttachmentHeader h = getAttachmentHeader(mimeType);
Attachment attachment = getAttachment(mimeType);
context.checking(new Expectations() {{
oneOf(imageHelper).getExtensionFromMimeType(mimeType);
will(returnValue(null));
}});
AttachmentItem item =
controller.getAttachmentItem(h, attachment, false);
AttachmentItem item = retriever.getAttachmentItem(attachment, false);
assertTrue(item.hasError());
}
@Test
public void testSmallJpegImage() {
String mimeType = "image/jpeg";
AttachmentHeader h = getAttachmentHeader(mimeType);
Attachment attachment = getAttachment(mimeType);
context.checking(new Expectations() {{
oneOf(imageHelper).decodeStream(with(any(InputStream.class)));
......@@ -88,7 +75,7 @@ public class AttachmentRetrieverTest extends BrambleMockTestCase {
will(returnValue("jpg"));
}});
AttachmentItem item = controller.getAttachmentItem(h, attachment, true);
AttachmentItem item = retriever.getAttachmentItem(attachment, true);
assertEquals(msgId, item.getMessageId());
assertEquals(160, item.getWidth());
assertEquals(240, item.getHeight());
......@@ -102,7 +89,7 @@ public class AttachmentRetrieverTest extends BrambleMockTestCase {
@Test
public void testBigJpegImage() {
String mimeType = "image/jpeg";
AttachmentHeader h = getAttachmentHeader(mimeType);
Attachment attachment = getAttachment(mimeType);
context.checking(new Expectations() {{
oneOf(imageHelper).decodeStream(with(any(InputStream.class)));
......@@ -111,7 +98,7 @@ public class AttachmentRetrieverTest extends BrambleMockTestCase {
will(returnValue("jpg"));
}});
AttachmentItem item = controller.getAttachmentItem(h, attachment, true);
AttachmentItem item = retriever.getAttachmentItem(attachment, true);
assertEquals(1728, item.getWidth());
assertEquals(2592, item.getHeight());
assertEquals(dimensions.maxWidth, item.getThumbnailWidth());
......@@ -121,7 +108,7 @@ public class AttachmentRetrieverTest extends BrambleMockTestCase {
@Test
public void testMalformedError() {
AttachmentHeader h = getAttachmentHeader("image/jpeg");
Attachment attachment = getAttachment("image/jpeg");
context.checking(new Expectations() {{
oneOf(imageHelper).decodeStream(with(any(InputStream.class)));
......@@ -130,12 +117,13 @@ public class AttachmentRetrieverTest extends BrambleMockTestCase {
will(returnValue(null));
}});
AttachmentItem item = controller.getAttachmentItem(h, attachment, true);
AttachmentItem item = retriever.getAttachmentItem(attachment, true);
assertTrue(item.hasError());
}
private AttachmentHeader getAttachmentHeader(String contentType) {
return new AttachmentHeader(msgId, contentType);
private Attachment getAttachment(String contentType) {
AttachmentHeader header = new AttachmentHeader(msgId, contentType);
InputStream in = new ByteArrayInputStream(getRandomBytes(42));
return new Attachment(header, in);
}
}
briar-api/src/main/java/org/briarproject/briar/api/messaging/InvalidAttachmentException.java 0 → 100644
View file @ 593a0c46
package org.briarproject.briar.api.messaging;
import org.briarproject.bramble.api.db.DbException;
import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
/**
* An exception that is thrown when an {@link AttachmentHeader} is used to
* load an {@link Attachment}, and the header refers to a message that is not
* an attachment, or to an attachment that does not have the expected content
* type.
*/
@NotNullByDefault
public class InvalidAttachmentException extends DbException {
}
briar-api/src/main/java/org/briarproject/briar/api/messaging/MessagingManager.java
View file @ 593a0c46
......@@ -69,6 +69,10 @@ public interface MessagingManager extends ConversationClient {
/**
* Returns the attachment with the given message ID and content type.
*
* @throws InvalidAttachmentException If the header refers to a message
* that is not an attachment, or to an attachment that does not have the
* expected content type
*/
Attachment getAttachment(AttachmentHeader h) throws DbException;
......
briar-core/src/main/java/org/briarproject/briar/messaging/MessagingManagerImpl.java
View file @ 593a0c46
......@@ -32,6 +32,7 @@ import org.briarproject.briar.api.conversation.ConversationMessageHeader;
import org.briarproject.briar.api.messaging.Attachment;
import org.briarproject.briar.api.messaging.AttachmentHeader;
import org.briarproject.briar.api.messaging.FileTooBigException;
import org.briarproject.briar.api.messaging.InvalidAttachmentException;
import org.briarproject.briar.api.messaging.MessagingManager;
import org.briarproject.briar.api.messaging.PrivateMessage;
import org.briarproject.briar.api.messaging.PrivateMessageHeader;
......@@ -380,6 +381,12 @@ class MessagingManagerImpl implements MessagingManager, IncomingMessageHook,
byte[] body = clientHelper.getMessage(m).getBody();
try {
BdfDictionary meta = clientHelper.getMessageMetadataAsDictionary(m);
Long messageType = meta.getOptionalLong(MSG_KEY_MSG_TYPE);
if (messageType == null || messageType != ATTACHMENT)
throw new InvalidAttachmentException();
String contentType = meta.getString(MSG_KEY_CONTENT_TYPE);
if (!contentType.equals(h.getContentType()))
throw new InvalidAttachmentException();
int offset = meta.getLong(MSG_KEY_DESCRIPTOR_LENGTH).intValue();
return new Attachment(h, new ByteArrayInputStream(body, offset,
body.length - offset));
......
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