Communication Setup in Emacs

# My server environment,
uname -a
# Linux oci-a1-flex 6.12.38+deb13-cloud-arm64 #1 SMP Debian 6.12.38-1 (2025-07-16) aarch64 GNU/Linux
# On the server machine,
# https://element-hq.github.io/synapse/latest/setup/installation.html#platform-specific-prerequisites
sudo apt install build-essential python3-dev libffi-dev \
     python3-pip python3-setuptools sqlite3 \
     libssl-dev virtualenv libjpeg-dev libxslt1-dev
mkdir -p /usr/local/src/matrix-synapse
cd /usr/local/src/matrix-synapse
virtualenv -p python3 /usr/local/src/matrix-synapse/env
source /usr/local/src/matrix-synapse/env/bin/activate
pip install --upgrade pip
pip install --upgrade setuptools
# PostgreSQL database adapter for Python.
pip install psycopg2-binary
pip install matrix-synapse
python -m synapse.app.homeserver \
       --server-name matrix.bhw.name \
       --config-path /usr/local/src/matrix-synapse/homeserver.yaml \
       --generate-config \
       --report-stats=yes
# Set up PostgreSQL Database.
sudo apt install postgresql
# Log into the PostgreSQL user.
sudo -su postgres
# Create a user synapse and a database synapse for PostgreSQL.
# Remember the password in the next step.
createuser --pwprompt synapse
createdb --encoding=UTF8 --locale=C --template=template0 --owner=synapse synapse
# Leave the postgres account.
exit

# Configuration file for Synapse.
#
# This is a YAML file: see [1] for a quick introduction. Note in particular
# that *indentation is important*: all the elements of a list or dictionary
# should have the same indentation.
#
# [1] https://docs.ansible.com/ansible/latest/reference_appendices/YAMLSyntax.html
#
# For more information on how to configure Synapse, including a complete accounting of
# each option, go to docs/usage/configuration/config_documentation.md or
# https://element-hq.github.io/synapse/latest/usage/configuration/config_documentation.html
server_name: "matrix.bhw.name"
pid_file: /usr/local/src/matrix-synapse/homeserver.pid
listeners:
  - port: 8008
    tls: false
    type: http
    x_forwarded: true
    bind_addresses: ['::1', '127.0.0.1']
    resources:
      - names: [client, federation]
        compress: false
presence:
  enabled: false
database:
  name: psycopg2
  args:
    user: synapse
    password: yourpassword
    database: synapse
    host: localhost
    cp_min: 5
    cp_max: 10
log_config: "/usr/local/src/matrix-synapse/matrix.bhw.name.log.config"
media_store_path: /usr/local/src/matrix-synapse/media_store
report_stats: true
signing_key_path: "/usr/local/src/matrix-synapse/matrix.bhw.name.signing.key"
trusted_key_servers:
  - server_name: "matrix.org"

# vim:ft=yaml

firewall-cmd --get-services
firewall-cmd --zone=public --permanent --add-port=443/tcp
firewall-cmd --zone=public --permanent --add-port=8448/tcp
firewall-cmd --reload
firewall-cmd --list-ports

matrix.bhw.name {
    reverse_proxy /_matrix/* localhost:8008
    reverse_proxy /_synapse/client/* localhost:8008
}
matrix.bhw.name:8448 {
    reverse_proxy /_matrix/* localhost:8008
}

cd /usr/local/src/matrix-synapse/
source env/bin/activate
synctl start

sudo -su postgres
psql -d synapse
UPDATE users SET admin = 1 WHERE name = '@yourusername:matrix.bhw.name';
exit
exit

[Unit]
Description=Synapse Matrix homeserver
# If you are using postgresql to persist data, uncomment this line to make sure
# synapse starts after the postgresql service.
After=postgresql.service

[Service]
Type=notify
NotifyAccess=main
User=root
Group=root
WorkingDirectory=/usr/local/src/matrix-synapse/
ExecStart=/usr/local/src/matrix-synapse/env/bin/python -m synapse.app.homeserver --config-path=/usr/local/src/matrix-synapse/homeserver.yaml
ExecReload=/bin/kill -HUP $MAINPID
Restart=always
RestartSec=3
SyslogIdentifier=matrix-synapse

[Install]
WantedBy=matrix-synapse.target

systemctl enable matrix-synapse
systemctl restart matrix-synapse

# Create folder if it doesn't exist. Note I am downloading arm64 executable.
mkdir /opt/mautrix-whatsapp/
# If updating, make sure to 'systemctl stop mautrix-whatsapp'.
curl -L -o /opt/mautrix-whatsapp/mautrix-whatsapp https://github.com/mautrix/whatsapp/releases/download/v0.12.3/mautrix-whatsapp-arm64
# curl -L -o /opt/mautrix-meta/mautrix-meta https://github.com/mautrix/meta/releases/download/v0.5.2/mautrix-meta-arm64
# curl -L -o /opt/mautrix-gmessages/mautrix-gmessages https://github.com/mautrix/gmessages/releases/download/v0.6.4/mautrix-gmessages-arm64
# curl -L -o /opt/mautrix-slack/mautrix-slack https://github.com/mautrix/slack/releases/download/v0.2.2/mautrix-slack-arm64
cd /opt/mautrix-whatsapp
# Grant executable permissiosn to the "mautrix-whatsapp" go executable.
chmod +x mautrix-whatsapp
# Generate an example config file.
./mautrix-whatsapp -e

# Log into the PostgreSQL user.
sudo -su postgres
# Create a database mautrix-whatsapp
createdb --encoding=UTF8 --locale=C --template=template0 --owner=synapse mautrix-whatsapp

# For mautrix-meta you will need to specify
# network:
#    mode: facebook (or instagram)
# https://docs.mau.fi/bridges/general/initial-config.html#mautrix-meta
homeserver:
    address: http://localhost:8008
    domain: matrix.bhw.name
appservice:
    database:
        uri: postgres://dbuser:dbpass@localhost/dbname?sslmode=disable
bridge:
    permissions:
        "matrix.bhw.name": user
        "@ben:matrix.bhw.name": admin

# Generate the appservice registration file.
cd /opt/mautrix-whatsapp/
./mautrix-whatsapp -g
chmod 644 registration.yaml

app_service_config_files:
  - /opt/mautrix-whatsapp/registration.yaml
  # Any other bridge registrations.
  #- /opt/mautrix-gmessages/registration.yaml
  #- /opt/mautrix-meta/registration.yaml

[Unit]
Description=mautrix-whatsapp bridge

[Service]
Type=exec
User=root
WorkingDirectory=/opt/mautrix-whatsapp
ExecStart=/opt/mautrix-whatsapp/mautrix-whatsapp
Restart=on-failure
RestartSec=30s

[Install]
WantedBy=multi-user.target

# Will start this service at boot.
systemctl enable mautrix-whatsapp.service
systemctl start mautrix-whatsapp.service
# When updating bridge, restart matrix-synapse as well
# systemctl restart matrix-synapse

;; First login; subsequent logins will used a cached session if
;; `ement-save-sessions' is TRUE.
(ement-connect :user-id "@ben:matrix.bhw.name"
               :password  "p@ssword"
               :uri-prefix "https://matrix.bhw.name")

(setf browse-url-generic-program  "/mnt/c/Windows/System32/cmd.exe"
      browse-url-generic-args     '("/c" "start")
      browse-url-browser-function #'browse-url-generic
      ;; Needed for `mu4e-action-view-in-browser'
      browse-url-filename-alist
      '(("^/\\(ftp@\\|anonymous@\\)?\\([^:/]+\\):/*" . "ftp://\\2/")
        ("^/\\([^:@/]+@\\)?\\([^:/]+\\):/*" . "ftp://\\1\\2/")
        ;; For gnus-article-browse-html-article on Windows Subsystem for Linux.
        ("^/+" . "file://///wsl$/Debian/")))