The indexes returned in recording events from BBB refer to positions
within a UTF-16 encoded string. Rather than attempt to untangle this in
the server (which might have a performance cost), it's easier to switch
the caption processing code to operate in UTF-16 encoding as well to
make it work consistently.
The PyICU library provides a UnicodeString type which is a UTF-16 string
similar to Java and JavaScript, but which supports all the python
indexing methods. It's fairly straightforwards to swap it in in place of
the types used previously, and works natively as an input to the ICU
line break iterator too.
Fixes#10531
The previous implementation of the BigBlueButton.execute method runs the
process with separate stdout and stderr streams. It first reads all of
the output from stdout, then reads all of the output from stderr.
This can cause a deadlock if the process writes a lot of data to stderr.
The IO buffer for stderr could fill, blocking progress. But since it
hasn't closed stdout, the ruby script is still waiting on a read to
stdout.
Switch to an execution method (using IO.popen) that allows combining
stdout and stderr into a single stream, eliminating the issue.
On my server 2.3 alpha, the method metadata_for(meeting_id) gives back {}
(empty Hash). Thus "return if meeting_metadata.nil?" does not occur.
Does @redis.hgetall give {} instead of nil, even though there is a comment in
node_modules/redis/lib/utils.js "hgetall converts its replies to an Object. If
the reply is empty, null is returned"???
On my server 2.3 alpha, the method metadata_for(meeting_id) gives back {}
(empty Hash). Thus "return if meeting_metadata.nil?" does not occur.
Does @redis.hgetall give {} instead of nil, even though there is a comment in
node_modules/redis/lib/utils.js "hgetall converts its replies to an Object. If
the reply is empty, null is returned"???
Update the list of invalid characters based on what the XML
specification permits and discourages.
Use the ruby string `scrub` method to remove invalid characters that
can't be expressed in the `tr` syntax, like unpaired surrogates and
UTF-8 prefix bytes.
This commit fixes an issue with reading and writing files.
File.open is used which means that a file will remain open
unless explicilty closed or the program exit. This doesn't work
for an NFS mount as the scripts try to "rm -rf" when the file
is still open. This commit fixes that by replacing all .opens
with .reads
After the last segment of a recording has been archived, it is safe to
delete the original files that were recorded by the various media
handling components. This patch deletes the freeswitch audio files and
kurento webcam/screenshare files after they have been archived.
It needs to be used in combination with some changes to users/groups and
directory permissions to allow the `bigbluebutton` user to delete files
that it could previously only read.
I've moved the workers code into the `lib` subdirectory with other library-ish
code; this puts it into the ruby load path used by most scripts so referencing
files is easier.
I've applied various style cleanups based on the rubocop config present.
The `events` processing step has been integrated as a new worker `EventsWorker`,
there is no longer a separate `events/events.rb` script. I've reworked the
`rap-starter.rb` script to check for the done files in both the events and
recorded status directories.
Write a tool that generates the poll svg images directly from the
BBB poll description. This avoids the issues with special characters
in the gnuplot labels, and gives us a lot more flexibility in how
the polls are formatted and styled.
Changed only in the main class so journald is the default and in the
scripts related to the processes in resque. Internal scripts might still
be logging to files.
Instead of being executed every 30s by systemd, it's now a service that's
running all the time and will wait for .done files to start the processing
of recordings.
Found another case where the html5 client was passing through control
characters, in the original presentation name field.
Rather than play whack-a-mole with different fields which may eventually
get poorly sanitized user data, apply the control character filtering
to all properties.
Adjust the character range to do the following:
* Allow horizontal tab (0x09), it's not problematic.
* Disallow control characters in the range 0x1A-0x1F. Probably missed by accident.
It used to print:
Failed to download file: undefined local variable or method `respose' for BigBlueButton:Module
Did you mean? response
because the incorrect variable name was used in the error message.
There was no effect other than the message in the log, since the shared notes
couldn't be archived anyways, and the only thing the exception did was ...
prevent the shared notes from being archived.
FFmpeg has pretty good format autodetection even if the filename has the
'.txt' extension, so just rely on that. It'll even pull subtitles out of
video files - although I expect we'll have size limits so that doesn't
happen.
Rather than running the tool in a loop, I'm using inotify to watch for
new files being created (ideally, the other rap workers will be migrated
to this style in the future). The trigger for processing is the creation
of the .json index file for the uploaded track.
Sometimes when text is pasted into the whiteboard text tool from
external apps, it'll include control characters that mess up later
recording processing scripts.
Run the same cleanup as already used for chat messages on the whiteboard
text as well.
The cleanup has been adjusted to allow newline and tab characters. They
won't really cause issues in chat, and newlines (at a minimum) are
required for the whiteboard.
This is a workaround for #7356
