Introduce notify_push in master (#1817)

Signed-off-by: szaimen <szaimen@e.mail.de>

Co-authored-by: Daniel Hansson <github@hanssonit.se>

1 files changed, 171 insertions, 0 deletions

diff --git a/apps/notify_push.sh b/apps/notify_push.sh
new file mode 100644
index 00000000..ab23bb00
--- /dev/null
+++ b/apps/notify_push.sh
@@ -0,0 +1,171 @@
+#!/bin/bash
+
+# T&M Hansson IT AB © - 2021, https://www.hanssonit.se/
+# Copyright © 2021 Simon Lindner (https://github.com/szaimen)
+
+true
+SCRIPT_NAME="Push Notifications for Nextcloud"
+SCRIPT_EXPLAINER="$SCRIPT_NAME attempts to solve the issue where Nextcloud clients have to \
+periodically check the server if any files have been changed, new activities were created, \
+or a notification was created/processed/dismissed, which increases the load on the server. \
+By providing a way for the server to send update notifications to the clients, \
+the need for the clients to make these checks can be greatly reduced, \
+which reduces the load on the servern and delivers notifications to the clients in some cases faster."
+# shellcheck source=lib.sh
+source /var/scripts/fetch_lib.sh || source <(curl -sL https://raw.githubusercontent.com/nextcloud/vm/master/lib.sh)
+
+# Check for errors + debug code and abort if something isn't right
+# 1 = ON
+# 0 = OFF
+DEBUG=0
+debug_mode
+
+# Check if root
+root_check
+
+# Variables
+SERVICE_PATH="/etc/systemd/system/notify_push.service"
+ARCHITECTURE=$(uname -p)
+
+# Test prequesites
+print_text_in_color "$ICyan" "Checking if Nextcloud is installed..."
+# Get all needed variables from the library
+nc_update
+# Check redis
+if ! php -m | grep -q redis
+then
+    msg_box "The redis php extension isn't enabled. Please run the an update to fix this."
+    exit 1
+fi
+# NC21
+if [ "${CURRENTVERSION%%.*}" -lt "21" ]
+then
+    msg_box "This app is only supported from NC 21 and higher. Cannot proceed!"
+    exit 1
+fi
+# Check TLS
+NCDOMAIN=$(nextcloud_occ_no_check config:system:get overwrite.cli.url | sed 's|https://||;s|/||')
+if ! curl -s https://"$NCDOMAIN"/status.php | grep -q 'installed":true'
+then
+    msg_box "It seems like Nextcloud is not installed or that you don't use https on:
+$NCDOMAIN.
+Please install Nextcloud and make sure your domain is reachable, or activate TLS
+on your domain to be able to run this script.
+If you use the Nextcloud VM you can use the Let's Encrypt script to get TLS and activate your Nextcloud domain."
+    exit 1
+fi
+# Check apache conf
+if ! [ -f "$SITES_AVAILABLE/$NCDOMAIN.conf" ]
+then
+    msg_box "The apache conf for $NCDOMAIN isn't available. This is not supported!"
+    exit 1
+elif ! grep -q "<VirtualHost \*:443>" "$SITES_AVAILABLE/$NCDOMAIN.conf"
+then
+    msg_box "The virtualhost config doesn't seem to be the default. Cannot proceed."
+    exit 1
+fi
+# Check processor architecture
+if [ "$ARCHITECTURE" != "x86_64" ] && [ "$ARCHITECTURE" != "aarch64" ] && [ "$ARCHITECTURE" != "armv7" ]
+then
+    msg_box "No compatible processor architecture found. Cannot proceed."
+    exit 1
+fi
+
+# Check if notify_push is already installed
+if ! [ -f "$SERVICE_PATH" ] && ! is_app_installed notify_push
+then
+    # Ask for installing
+    install_popup "$SCRIPT_NAME"
+else
+    # Ask for removal or reinstallation
+    reinstall_remove_menu "$SCRIPT_NAME"
+    # Removal
+    if is_app_installed notify_push
+    then
+        nextcloud_occ_no_check app:remove notify_push
+    fi
+    sed -i "/#Notify-push-start/,/#Notify-push-end/d" "$SITES_AVAILABLE/$NCDOMAIN.conf"
+    systemctl restart apache2
+    systemctl stop notify_push &>/dev/null
+    rm -f "$SERVICE_PATH"
+    # Show successful uninstall if applicable
+    removal_popup "$SCRIPT_NAME"
+fi
+
+# Install the app
+install_and_enable_app notify_push
+# The app needs to be disabled before the setup
+nextcloud_occ_no_check app:disable notify_push
+# configure correct rights (otherwise the daemon might fail to start)
+chmod 770 -R "$NC_APPS_PATH/notify_push" 
+
+# Setting up the service
+cat << NOTIFY_PUSH > "$SERVICE_PATH"
+[Unit]
+Description = Push daemon for Nextcloud clients
+
+[Service]
+Environment = PORT=7867
+ExecStart = $NC_APPS_PATH/notify_push/bin/$ARCHITECTURE/notify_push $NCPATH/config/config.php
+User = www-data
+
+[Install]
+WantedBy = multi-user.target
+NOTIFY_PUSH
+
+# Starting and enabling the service
+systemctl start notify_push
+systemctl enable notify_push
+
+# Apache config
+sudo a2enmod proxy
+sudo a2enmod proxy_http
+sudo a2enmod proxy_wstunnel
+cat << APACHE_PUSH_CONF > /tmp/apache.conf
+    #Notify-push-start - Please don't remove or change this line
+    ProxyPass /push/ws ws://localhost:7867/ws
+    ProxyPass /push/ http://localhost:7867/
+    ProxyPassReverse /push/ http://localhost:7867/
+    #Notify-push-end - Please don't remove or change this line"
+APACHE_PUSH_CONF
+sed -i '/<VirtualHost \*:443>/r /tmp/apache.conf' "$SITES_AVAILABLE/$NCDOMAIN.conf"
+rm -f /tmp/apache.conf
+if ! systemctl restart apache2
+then
+    msg_box "Failed to restart apache2. Will restore the old NCDOMAIN config now."
+    sed -i "/#Notify-push-start/,/#Notify-push-end/d" "$SITES_AVAILABLE/$NCDOMAIN.conf"
+    systemctl stop notify_push
+    rm "$SERVICE_PATH"
+    systemctl restart apache2
+    nextcloud_occ_no_check app:remove notify_push
+    exit 1
+fi
+
+# Add localhost to trusted proxies
+count=0
+while [ "$count" -lt 10 ]
+do
+    if [ "$(nextcloud_occ_no_check config:system:get trusted_proxies "$count")" = "127.0.0.1" ]
+    then
+        break
+    elif [ -z "$(nextcloud_occ_no_check config:system:get trusted_proxies "$count")" ]
+    then
+        nextcloud_occ_no_check config:system:set trusted_proxies "$count" --value="127.0.0.1"
+        break
+    else
+        count=$((count+1))
+    fi
+done
+
+# Enable Nextcloud app
+install_and_enable_app notify_push
+
+# Configure the Nextcloud app and test if it works
+if ! nextcloud_occ_no_check notify_push:setup "https://$NCDOMAIN/push"
+then
+    msg_box "Something didn't work while testing $SCRIPT_NAME.
+Please try again by running this script again!"
+    exit 1
+else
+    msg_box "Congratulations! $SCRIPT_NAME was set up correctly!"
+fi