Add support for comments and reblogging to Blog Client
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 (and group).
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 MR breaks backwards compatibility with old blog posts.
It removes the content type, title and parent ID from the post.
Furthermore, it includes one commit that replaces the `Message` in `MessageSharedEvent` with a `MessageId`.
Closes#494
See merge request !285
Sign Introduction Information to be able to discover MITM attack
The local introducee doesn't know whether each piece of information received from the introducer originates from the remote introducee or has been replaced by the introducer, i.e. whether the introducer is carrying out a man-in-the-middle attack.
The introduction protocol doesn't aim to detect or prevent man-in-the-middle attacks. We only aim to establish that if the remote identity public key is not replaced then the remote ephemeral public key, transport properties and timestamp are not replaced either. This MR adds a MAC and a signature to the introduction protocol's ACK message to fulfill that aim. See #364 for the detailed security argument.
Later, when the local introducee verifies that the remote identity public key belongs to a particular person (#513), she can also be sure that the remote ephemeral public key, transport properties and timestamp originated from that person.
Closes#364
See merge request !297
Before the introducee sends her ACK,
she derives a master key from the ephemeral shared secret as before.
Two nonces and a MAC key are then derived from the master key.
The local introducee signs one of the nonces and calculates a MAC
over her own identity public key, ephemeral public key,
transport properties and timestamp.
The local introducee includes the signature and MAC in her ACK.
On receiving the remote introducee's ACK,
the local introducee verifies the signature and MAC.
Should the verification fail, an ABORT is sent to the introducer and
the remote introducee that was added as inactive is deleted again.
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.
Use Briar's IoUtils.copy(), not H2's IOUtils.copy()
Our implementation closes both streams, H2's implementation leaves them open.
Closes#614.
See merge request !293
Blog controller thread safety
This patch removes the mutable list of posts from the blog controller to make it thread-safe, and adds a cache of message bodies to speed up reloads.
Closes#555.
See merge request !276
Remove sensitive information from crash and feedback reports
This depends on MR !290 and removes also the crash report settings.
Closes#311
See merge request !291
Scrub addresses before logging them
MAC, IP and onion addresses are now scrubbed before logging to ensure we don't leave any sensitive information in plaintext on the device or send it in crash reports or feedback.
* Bluetooth MAC addresses keep the first and last octets
* IPv4 addresses keep the first and last octets
* IPv6 addresses should be scrubbed completely (couldn't test)
* Onion addresses keep the first three characters
If an address is invalid it will not be scrubbed to enable debugging, because it is most likely not sensitive.
Closes#592
See merge request !290
Add feed title to imported entries
Also fixes one bug where a new feed was not saved and improved HTML stripping a bit.
Closes#483
See merge request !287
Server-side code for accepting crash reports and feedback
* Moved some shared code for copying InputStreams to OutputStreams into a utility class
* Modified the dev report sender to send one report per connection
* Easier to handle on the server side
* If the connection fails after sending any reports, they don't need to be resent
* Tor will reuse the circuit, so it's cheap
* Added server-side code for accepting dev reports
* We need to protect the server's resources from DoS attacks
* Reports can't be larger than 1 MB
* Connections are limited to an average rate of one per minute
* The rate limiter uses a token bucket to allow bursts of up to 1,000 connections
* If the rate limit is exceeded, connection attempts will fail - clients will retry next time they sign in
* The limits can be raised when we move to a bigger server (and when we have some users)
See merge request !288
Fix two crashes when scanning QR codes
One crash was two due the `Context` being `null` and the other due to the camera being opened within an `AsyncTask`.
Closes#583
See merge request !282
