rebase 1.5.3.2

rebase 1.5.3

Rebase 1.5.3.1

Author: itiligent

1-setup.sh

@@ -0,0 +1,130 @@
+#!/bin/bash
+#######################################################################################################################
+# Add Nginx reverse proxy front end to default Guacamole install
+# For Ubuntu / Debian / Raspbian
+# 3 of 4
+# David Harrop
+# August 2023
+#######################################################################################################################
+
+# If run as standalone and not from the main installer script, check the below variables are correct.
+# To run standalone: sudo -E ./3-install-nginx.sh
+
+# Prepare text output colours
+GREY='\033[0;37m'
+DGREY='\033[0;90m'
+GREYB='\033[1;37m'
+LRED='\033[0;91m'
+LGREEN='\033[0;92m'
+LYELLOW='\033[0;93m'
+NC='\033[0m' #No Colour
+
+if ! [[ $(id -u) = 0 ]]; then
+    echo
+    echo -e "${LRED}Please run this script as sudo or root${NC}" 1>&2
+    exit 1
+fi
+
+echo
+echo
+echo -e "${LGREEN}Installing Nginx...${DGREY}"
+echo
+
+TOMCAT_VERSION=$(ls /etc/ | grep tomcat)
+# Below variables are automatically updated by the 1-setup.sh script with the respective values given at install (manually update if blank)
+PROXY_SITE=
+INSTALL_LOG=
+GUAC_URL=
+
+# Install Nginx
+apt-get update -qq >/dev/null
+apt-get install nginx -qq -y &>>${INSTALL_LOG}
+
+echo -e "${GREY}Configuring Nginx as a reverse proxy for Guacamole's Apache Tomcat front end...${DGREY}"
+# Configure /etc/nginx/sites-available/(local dns site name)
+cat <<EOF | tee /etc/nginx/sites-available/$PROXY_SITE
+server {
+    listen 80 default_server;
+    server_name $GUAC_URL;
+    location / {
+        proxy_pass $GUAC_URL;
+        proxy_buffering off;
+        proxy_http_version 1.1;
+        proxy_set_header X-Forwarded-For \$proxy_add_x_forwarded_for;
+        proxy_set_header Upgrade \$http_upgrade;
+        proxy_set_header Connection \$http_connection;
+        access_log off;
+    }
+}
+EOF
+if [[ $? -ne 0 ]]; then
+    echo -e "${LRED}Failed. See ${INSTALL_LOG}${GREY}" 1>&2
+    exit 1
+else
+    echo -e "${LGREEN}OK${GREY}"
+    echo
+fi
+
+# Force nginx to require tls1.2 and above
+sed -i -e '/ssl_protocols/s/^/#/' /etc/nginx/nginx.conf
+sed -i "/SSL Settings/a \        ssl_protocols TLSv1.2 TLSv1.3;" /etc/nginx/nginx.conf
+
+# Symlink new reverse proxy site config from sites-available to sites-enabled
+ln -s /etc/nginx/sites-available/$PROXY_SITE /etc/nginx/sites-enabled/
+
+# Make sure the default Nginx site is unlinked
+unlink /etc/nginx/sites-enabled/default
+
+# Do mandatory Nginx tweaks for logging actual client IPs through a proxy IP of 127.0.0.1 - DO NOT CHANGE COMMAND FORMATING!
+echo -e "${GREY}Configuring Apache Tomcat valve for pass through of client IPs to Guacamole logs...${GREY}"
+sed -i '/pattern="%h %l %u %t &quot;%r&quot; %s %b"/a        \        <!-- Allow host IP to pass through to guacamole.-->\n        <Valve className="org.apache.catalina.valves.RemoteIpValve"\n               internalProxies="127\.0\.0\.1|0:0:0:0:0:0:0:1"\n               remoteIpHeader="x-forwarded-for"\n               remoteIpProxiesHeader="x-forwarded-by"\n               protocolHeader="x-forwarded-proto" />' /etc/$TOMCAT_VERSION/server.xml
+if [[ $? -ne 0 ]]; then
+    echo -e "${LRED}Failed. See ${INSTALL_LOG}${GREY}" 1>&2
+    exit 1
+else
+    echo -e "${LGREEN}OK${GREY}"
+    echo
+fi
+
+# Allow large file transfers through Nginx
+sed -i '/client_max_body_size/d' /etc/nginx/nginx.conf  # remove this line if it already exists to prevent duplicates
+sed -i "/Basic Settings/a \        client_max_body_size 1000000000M;" /etc/nginx/nginx.conf # Add larger file transfer size, should be enough!
+echo -e "${GREY}Boosting Nginx's 'maximum body size' parameter to allow large file transfers...${GREY}"
+if [[ $? -ne 0 ]]; then
+    echo -e "${LRED}Failed. See ${INSTALL_LOG}${GREY}" 1>&2
+    exit 1
+else
+    echo -e "${LGREEN}OK${GREY}"
+    echo
+fi
+
+# Update general ufw rules so force traffic via reverse proxy. Only Nginx and SSH will be available over the network.
+echo -e "${GREY}Updating firewall rules to allow only SSH and tcp 80/443..."
+ufw default allow outgoing >/dev/null 2>&1
+ufw default deny incoming >/dev/null 2>&1
+ufw allow OpenSSH >/dev/null 2>&1
+ufw allow 80/tcp >/dev/null 2>&1
+ufw delete allow 8080/tcp >/dev/null 2>&1
+echo "y" | sudo ufw enable >/dev/null 2>&1
+if [[ $? -ne 0 ]]; then
+    echo -e "${LRED}Failed. See ${INSTALL_LOG}${GREY}" 1>&2
+    exit 1
+else
+    echo -e "${LGREEN}OK${GREY}"
+    echo
+fi
+
+# Reload everything
+echo -e "${GREY}Restaring Guacamole & Ngnix..."
+systemctl restart $TOMCAT_VERSION
+systemctl restart guacd
+systemctl restart nginx
+if [[ $? -ne 0 ]]; then
+    echo -e "${LRED}Failed. See ${INSTALL_LOG}${GREY}" 1>&2
+    exit 1
+else
+    echo -e "${LGREEN}OK${GREY}"
+fi
+
+# Done
+echo -e ${NC}