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Add support for comments and reblogging to Blog Client

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Comments and reblogs need to depend on the post they refer to.
Since message dependencies are limited to one group,
the post and also the comments need to be wrapped
when commented on or reblogged to another blog.

For this reason, in addition to comments, two new wrapping message types
are introduced. They retain all data of the original messages and allow
for reconstruction and signature verification.

This commit breaks backwards compatibility with old blog posts.
It removes the content type, title and parent ID from the post
message structure.
This commit is contained in:
Torsten Grote
2016-08-11 19:34:52 -03:00
parent 743fc7dd1f
commit 3dd3a18694
29 changed files with 874 additions and 320 deletions
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15
briar-core/src/org/briarproject/feed/FeedManagerImpl.java
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@@ -23,10 +23,10 @@ import org.briarproject.api.db.DbException;
import org.briarproject.api.db.Transaction;
import org.briarproject.api.feed.Feed;
import org.briarproject.api.feed.FeedManager;
import org.briarproject.api.lifecycle.IoExecutor;
import org.briarproject.api.identity.AuthorId;
import org.briarproject.api.identity.IdentityManager;
import org.briarproject.api.identity.LocalAuthor;
import org.briarproject.api.lifecycle.IoExecutor;
import org.briarproject.api.lifecycle.Service;
import org.briarproject.api.lifecycle.ServiceException;
import org.briarproject.api.sync.ClientId;
@@ -41,7 +41,6 @@ import java.net.InetSocketAddress;
import java.net.Proxy;
import java.security.GeneralSecurityException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.Date;
@@ -440,15 +439,14 @@ class FeedManagerImpl implements FeedManager, Service, Client {
// get other information for post
GroupId groupId = feed.getBlogId();
long time = clock.currentTimeMillis();
byte[] body = getPostBody(b.toString());
String body = getPostBody(b.toString());
try {
// create and store post
Blog blog = blogManager.getBlog(txn, groupId);
AuthorId authorId = blog.getAuthor().getId();
LocalAuthor author = identityManager.getLocalAuthor(txn, authorId);
BlogPost post = blogPostFactory
.createBlogPost(groupId, null, time, null, author,
"text/plain", body);
.createBlogPost(groupId, time, null, author, body);
blogManager.addLocalPost(txn, post);
} catch (DbException e) {
if (LOG.isLoggable(WARNING))
@@ -472,10 +470,9 @@ class FeedManagerImpl implements FeedManager, Service, Client {
return StringUtils.trim(s.replaceAll("<(?s).*?>", ""));
}
private byte[] getPostBody(String text) {
byte[] body = StringUtils.toUtf8(text);
if (body.length <= MAX_BLOG_POST_BODY_LENGTH) return body;
else return Arrays.copyOfRange(body, 0, MAX_BLOG_POST_BODY_LENGTH - 1);
private String getPostBody(String text) {
if (text.length() <= MAX_BLOG_POST_BODY_LENGTH) return text;
else return text.substring(0, MAX_BLOG_POST_BODY_LENGTH);
}
/**