これはFOSSASIA2022での発表資料です This is the presentation material at FOSSASIA 2022. It's a hybrid PDF https://eventyay.com/e/6b901f56/session/7588

1. This work is licensed under a Creative Commons
Attribution-ShareAlike 4.0 Unported License.
How to use online office suites
and data storage
to protect your privacy
Shinji Enoki
enoki@libreoffice.org
2022-04-08
in FOSSASIA 2022

2. Agenda
●
Summarize data privacy risks and needs
●
Solutions in the area of file sharing and editing
- LibreOffice, Collabora Online, and Nextcloud -
●
How to build Nextcloud and Collabora Online

3. Shinji Enoki (榎真治)
●
Member of LibreOffice Japanese Team (2011-)
●
Membership Committee Deputies of The Document
Foundation(2020-)
●
LibreOffice Activity: organizing events, building
communities, sometimes QA
●
Other communities:
– Volunteer staff of Japan UNIX Society
– Volunteer staff of KANSAI OPEN Forum (KANSAI OPEN SOURCE)
– etc.

4. Live in Nishinomiya, Japan

5. Kobe
Osaka
Kyoto
Kansai Airport

6. Summarize data privacy risks
and needs

7. Data and privacy risks
●
We are increasingly using cloud services
●
They are very convenient , many benefits
●
However it became difficult to manage our data
●
There is a need to identify and assess risks

8. Growing risks and needs
●
Risk of loss of control
– Service providers not only Big Tech
– Governments:
●
User privacy needs and compliance
– Privacy culture and laws different from country to country, making it
difficult to respond
– Needs are constantly changing, must be agile
●
Illegal attacks
– Stealing or tampering with data, or attacks on availability

9. Risk of loss of control
●
Service provider
– They control your availability and usability
– Trade-off : Engineering cost and time vs. control
– You need the best combination
●
private cloud, public cloud (IaaS, SaaS, etc.), on-
premises

10. Benefits of open source solutions
●
Easy to control
– Transparent and active community is key
●
Easy to evaluate products
– The same as the production environment is immediately available
●
May not be a trade-off
– Good open source solution will greatly reduce the cost of self-
hosting
– Simple, match your needs, popular are important

11. (Additional information)
Digital sovereignty
●
The term "Digital sovereignty" is used mainly in Europe
(I have come to hear it in Japan as well. But not yet common)
●
My understanding is that there is a mix mixture
– Industrial policy towards Big Tech
– Protecting citizens' privacy
– Democratically controlling privacy
●
This is probably not a new concept, but it was redefined as a
new term because of the importance of this theme

12. Solutions in the area of file sharing
and editing
- LibreOffice, Collabora Online, and
Nextcloud -

13. Online file sharing and editing
●
Collaboration work is progressing all over the world
●
URI-based online file sharing is becoming more and
more important
●
Collaborative editing is also important

14. Nextcloud + Collabora Online
●
Most typical open source combination in this area
●
Nextcloud:
– Simple and powerful file sharing, file storage
●
Collabora Online:
– Collaborative editing on the web
– LibreOffice-based online office suite

15. Nextcloud
●
Web-based file management and sharing
– Accessable via WebDAV
– Folder-based sharing is also possible
●
Single sign-on and file access control
●
Sync with mobile apps and PC clients
●
Functions can be added with various apps
●
Calendar, Email client, task management, chat and video
conference included from the beginning

16. File share

17. Start Collabora Online
Click on the file name
area

19. Use cases
●
From large enterprises to home and individual users
●
University, company:
– Various cases from small team to huge organizations
– Public case study in Japan: Used by 35,000 people at the university
●
Personal:
– I've heard that many people in the Japanese Linux user group use
it personally
– My case is sync email files and Android pictures not only document
files

20. From Yano-san's presentation at LibreOffice
Asia Conference 2019

21. Japan UNIX Society case
●
It is an association of UNIX users that has been
active since 1983
●
Edited the bulletin using Collabora Online
●
One odt file was edited almost simultaneously by
four people for about two hours
●
Some of the functions did not work well, but the
work went very well

23. Desktop and online
●
LibreOffice on PC and Collabora Online have the same
rendering result
– I had created the template files in LibreOffice
– I had created the style in advance, so the format was consistent
even when co-edited
●
Automatically sync with Nextcloud client
– Be careful not to edit Collabora Online when clients sync
– Collabora Online will detect it and reload the file

24. How to build Nextcloud and Collabora
Online

25. Nextcloud server install
●
https://nextcloud.com/install/
●
Some options
– Snap Package
– Docker image
– Virtual Machine image
– Archive Files + Database setup
– Web Installer

26. Collabora Online install
●
Included in Nextcloud hub
– However, it's AppImage, difficult to add fonts etc.
– Not recommended for Asians as the characters will
be tofu
●
Install binaries by specifying Collabora repository
●
See also:
https://www.collaboraoffice.com/code-install-and-test/

27. Collabora Online Debian pacages
●
1. Import the signing key
– cd /usr/share/keyrings
– sudo wget https://collaboraoffice.com/downloads/gpg/collaboraonline-release-keyring.gpg
●
2. Add CODE package repositories
– create /etc/apt/sources.list.d/collaboraonline.sources
●
3. Install packages
– sudo apt update && sudo apt install coolwsd code-brand
●
4. Configuration
– Edit /etc/coolwsd/coolwsd.xml
– Put the SSL certificate file in /etc/coolwsd/
– sudo systemctl restart coolwsd
– sudo journalctl -u coolwsd (log)

28. Collabora Online install (2)
●
Sometimes confused with SSL and reverse proxy settings
– /etc/coolwsd/coolwsd.xml
●
Nextcloud app store has two apps
– Nextcloud Office
●
Plugin for using Collabora Online
– Collabora Online - Built-in CODE Server
●
Appimage version of Collabora Online
●
CODE is "Collabora Online Development Edition"

31. Server location
●
Nextcloud and Collabora Online can be separate
servers
●
Collabora Online can be scaled with HAProxy
●
Easy to combine private cloud, public cloud and on-
premises
– For example, use Collabora Online and HAPoxy
to scale it in the public cloud

32. Is this combination the best?
●
This is a very common tool and may not be as
efficient as a dedicated tool
●
Microsoft Office files can be read and written, but
not perfectly, on the same level as LibreOffice
●
On the other hand, compatibility with LibreOffice is
basically perfect if the same fonts are installed

33. Conclusion
●
Privacy risks and needs are increasing
●
Assessing whether data or systems should be controlled is
important
●
You can create a collaborative work environment using
Nextcloud and Collabora Online
●
You can support innovation by providing a collaborative
environment while considering the trade-off between
control and cost

34. Related talks at FOSSASIA
●
2022-04-08, 4:15 p.m. (SGT)
– Italo Vignoli : LibreOffice Technology, a FOSS platform for
personal productivity
●
2022-04-08, 8:30 p.m. (SGT)
– Michael Meeks(GM Productivity, Collabora) :
Secure, Private Document Collaboration
●
2022-04-09, 3:30 p.m. (SGT)
– Frank Karlitschek (CEO,Nextcloud): Open Ethics