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477 lines
15 KiB
477 lines
15 KiB
#!/bin/bash
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# Copyright Broadcom, Inc. All Rights Reserved.
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# SPDX-License-Identifier: APACHE-2.0
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#
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# Bitnami web server handler library
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# shellcheck disable=SC1090,SC1091
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# Load generic libraries
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. /opt/bitnami/scripts/liblog.sh
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########################
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# Execute a command (or list of commands) with the web server environment and library loaded
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# Globals:
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# *
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# Arguments:
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# None
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# Returns:
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# None
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#########################
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web_server_execute() {
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local -r web_server="${1:?missing web server}"
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shift
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# Run program in sub-shell to avoid web server environment getting loaded when not necessary
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(
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. "/opt/bitnami/scripts/lib${web_server}.sh"
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. "/opt/bitnami/scripts/${web_server}-env.sh"
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"$@"
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)
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}
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########################
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# Prints the list of enabled web servers
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# Globals:
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# None
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# Arguments:
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# None
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# Returns:
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# None
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#########################
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web_server_list() {
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local -r -a supported_web_servers=(apache nginx)
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local -a existing_web_servers=()
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for web_server in "${supported_web_servers[@]}"; do
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[[ -f "/opt/bitnami/scripts/${web_server}-env.sh" ]] && existing_web_servers+=("$web_server")
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done
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echo "${existing_web_servers[@]:-}"
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}
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########################
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# Prints the currently-enabled web server type (only one, in order of preference)
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# Globals:
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# None
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# Arguments:
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# None
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# Returns:
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# None
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#########################
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web_server_type() {
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local -a web_servers
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read -r -a web_servers <<< "$(web_server_list)"
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echo "${web_servers[0]:-}"
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}
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########################
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# Validate that a supported web server is configured
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# Globals:
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# None
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# Arguments:
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# None
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# Returns:
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# None
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#########################
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web_server_validate() {
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local error_code=0
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local supported_web_servers=("apache" "nginx")
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# Auxiliary functions
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print_validation_error() {
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error "$1"
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error_code=1
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}
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if [[ -z "$(web_server_type)" || ! " ${supported_web_servers[*]} " == *" $(web_server_type) "* ]]; then
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print_validation_error "Could not detect any supported web servers. It must be one of: ${supported_web_servers[*]}"
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elif ! web_server_execute "$(web_server_type)" type -t "is_$(web_server_type)_running" >/dev/null; then
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print_validation_error "Could not load the $(web_server_type) web server library from /opt/bitnami/scripts. Check that it exists and is readable."
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fi
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return "$error_code"
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}
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########################
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# Check whether the web server is running
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# Globals:
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# *
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# Arguments:
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# None
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# Returns:
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# true if the web server is running, false otherwise
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#########################
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is_web_server_running() {
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"is_$(web_server_type)_running"
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}
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########################
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# Start web server
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# Globals:
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# *
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# Arguments:
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# None
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# Returns:
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# None
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#########################
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web_server_start() {
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info "Starting $(web_server_type) in background"
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if [[ "${BITNAMI_SERVICE_MANAGER:-}" = "systemd" ]]; then
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systemctl start "bitnami.$(web_server_type).service"
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else
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"${BITNAMI_ROOT_DIR}/scripts/$(web_server_type)/start.sh"
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fi
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}
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########################
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# Stop web server
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# Globals:
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# *
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# Arguments:
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# None
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# Returns:
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# None
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#########################
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web_server_stop() {
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info "Stopping $(web_server_type)"
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if [[ "${BITNAMI_SERVICE_MANAGER:-}" = "systemd" ]]; then
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systemctl stop "bitnami.$(web_server_type).service"
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else
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"${BITNAMI_ROOT_DIR}/scripts/$(web_server_type)/stop.sh"
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fi
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}
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########################
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# Restart web server
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# Globals:
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# *
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# Arguments:
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# None
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# Returns:
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# None
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#########################
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web_server_restart() {
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info "Restarting $(web_server_type)"
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if [[ "${BITNAMI_SERVICE_MANAGER:-}" = "systemd" ]]; then
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systemctl restart "bitnami.$(web_server_type).service"
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else
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"${BITNAMI_ROOT_DIR}/scripts/$(web_server_type)/restart.sh"
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fi
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}
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########################
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# Reload web server
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# Globals:
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# *
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# Arguments:
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# None
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# Returns:
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# None
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#########################
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web_server_reload() {
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if [[ "${BITNAMI_SERVICE_MANAGER:-}" = "systemd" ]]; then
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systemctl reload "bitnami.$(web_server_type).service"
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else
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"${BITNAMI_ROOT_DIR}/scripts/$(web_server_type)/reload.sh"
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fi
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}
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########################
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# Ensure a web server application configuration exists (i.e. Apache virtual host format or NGINX server block)
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# It serves as a wrapper for the specific web server function
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# Globals:
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# *
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# Arguments:
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# $1 - App name
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# Flags:
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# --type - Application type, which has an effect on which configuration template to use
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# --hosts - Host listen addresses
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# --server-name - Server name
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# --server-aliases - Server aliases
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# --allow-remote-connections - Whether to allow remote connections or to require local connections
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# --disable - Whether to render server configurations with a .disabled prefix
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# --disable-http - Whether to render the app's HTTP server configuration with a .disabled prefix
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# --disable-https - Whether to render the app's HTTPS server configuration with a .disabled prefix
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# --http-port - HTTP port number
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# --https-port - HTTPS port number
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# --document-root - Path to document root directory
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# Apache-specific flags:
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# --apache-additional-configuration - Additional vhost configuration (no default)
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# --apache-additional-http-configuration - Additional HTTP vhost configuration (no default)
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# --apache-additional-https-configuration - Additional HTTPS vhost configuration (no default)
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# --apache-before-vhost-configuration - Configuration to add before the <VirtualHost> directive (no default)
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# --apache-allow-override - Whether to allow .htaccess files (only allowed when --move-htaccess is set to 'no' and type is not defined)
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# --apache-extra-directory-configuration - Extra configuration for the document root directory
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# --apache-proxy-address - Address where to proxy requests
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# --apache-proxy-configuration - Extra configuration for the proxy
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# --apache-proxy-http-configuration - Extra configuration for the proxy HTTP vhost
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# --apache-proxy-https-configuration - Extra configuration for the proxy HTTPS vhost
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# --apache-move-htaccess - Move .htaccess files to a common place so they can be loaded during Apache startup (only allowed when type is not defined)
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# NGINX-specific flags:
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# --nginx-additional-configuration - Additional server block configuration (no default)
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# --nginx-external-configuration - Configuration external to server block (no default)
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# Returns:
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# true if the configuration was enabled, false otherwise
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########################
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ensure_web_server_app_configuration_exists() {
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local app="${1:?missing app}"
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shift
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local -a apache_args nginx_args web_servers args_var
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apache_args=("$app")
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nginx_args=("$app")
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# Validate arguments
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while [[ "$#" -gt 0 ]]; do
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case "$1" in
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# Common flags
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--disable \
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| --disable-http \
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| --disable-https \
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)
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apache_args+=("$1")
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nginx_args+=("$1")
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;;
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--hosts \
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| --server-name \
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| --server-aliases \
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| --type \
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| --allow-remote-connections \
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| --http-port \
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| --https-port \
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| --document-root \
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)
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apache_args+=("$1" "${2:?missing value}")
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nginx_args+=("$1" "${2:?missing value}")
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shift
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;;
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# Specific Apache flags
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--apache-additional-configuration \
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| --apache-additional-http-configuration \
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| --apache-additional-https-configuration \
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| --apache-before-vhost-configuration \
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| --apache-allow-override \
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| --apache-extra-directory-configuration \
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| --apache-proxy-address \
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| --apache-proxy-configuration \
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| --apache-proxy-http-configuration \
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| --apache-proxy-https-configuration \
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| --apache-move-htaccess \
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)
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apache_args+=("${1//apache-/}" "${2:?missing value}")
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shift
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;;
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# Specific NGINX flags
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--nginx-additional-configuration \
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| --nginx-external-configuration)
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nginx_args+=("${1//nginx-/}" "${2:?missing value}")
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shift
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;;
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*)
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echo "Invalid command line flag $1" >&2
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return 1
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;;
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esac
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shift
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done
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read -r -a web_servers <<< "$(web_server_list)"
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for web_server in "${web_servers[@]}"; do
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args_var="${web_server}_args[@]"
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web_server_execute "$web_server" "ensure_${web_server}_app_configuration_exists" "${!args_var}"
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done
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}
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########################
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# Ensure a web server application configuration does not exist anymore (i.e. Apache virtual host format or NGINX server block)
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# It serves as a wrapper for the specific web server function
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# Globals:
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# *
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# Arguments:
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# $1 - App name
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# Returns:
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# true if the configuration was disabled, false otherwise
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########################
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ensure_web_server_app_configuration_not_exists() {
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local app="${1:?missing app}"
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local -a web_servers
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read -r -a web_servers <<< "$(web_server_list)"
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for web_server in "${web_servers[@]}"; do
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web_server_execute "$web_server" "ensure_${web_server}_app_configuration_not_exists" "$app"
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done
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}
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########################
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# Ensure the web server loads the configuration for an application in a URL prefix
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# It serves as a wrapper for the specific web server function
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# Globals:
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# *
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# Arguments:
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# $1 - App name
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# Flags:
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# --allow-remote-connections - Whether to allow remote connections or to require local connections
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# --document-root - Path to document root directory
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# --prefix - URL prefix from where it will be accessible (i.e. /myapp)
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# --type - Application type, which has an effect on what configuration template will be used
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# Apache-specific flags:
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# --apache-additional-configuration - Additional vhost configuration (no default)
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# --apache-allow-override - Whether to allow .htaccess files (only allowed when --move-htaccess is set to 'no')
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# --apache-extra-directory-configuration - Extra configuration for the document root directory
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# --apache-move-htaccess - Move .htaccess files to a common place so they can be loaded during Apache startup
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# NGINX-specific flags:
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# --nginx-additional-configuration - Additional server block configuration (no default)
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# Returns:
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# true if the configuration was enabled, false otherwise
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########################
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ensure_web_server_prefix_configuration_exists() {
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local app="${1:?missing app}"
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shift
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local -a apache_args nginx_args web_servers args_var
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apache_args=("$app")
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nginx_args=("$app")
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# Validate arguments
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while [[ "$#" -gt 0 ]]; do
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case "$1" in
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# Common flags
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--allow-remote-connections \
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| --document-root \
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| --prefix \
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| --type \
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)
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apache_args+=("$1" "${2:?missing value}")
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nginx_args+=("$1" "${2:?missing value}")
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shift
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;;
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# Specific Apache flags
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--apache-additional-configuration \
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| --apache-allow-override \
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| --apache-extra-directory-configuration \
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| --apache-move-htaccess \
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)
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apache_args+=("${1//apache-/}" "$2")
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shift
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;;
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# Specific NGINX flags
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--nginx-additional-configuration)
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nginx_args+=("${1//nginx-/}" "$2")
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shift
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;;
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*)
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echo "Invalid command line flag $1" >&2
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return 1
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;;
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esac
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shift
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done
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read -r -a web_servers <<< "$(web_server_list)"
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for web_server in "${web_servers[@]}"; do
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args_var="${web_server}_args[@]"
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web_server_execute "$web_server" "ensure_${web_server}_prefix_configuration_exists" "${!args_var}"
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done
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}
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########################
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# Ensure a web server application configuration is updated with the runtime configuration (i.e. ports)
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# It serves as a wrapper for the specific web server function
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# Globals:
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# *
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# Arguments:
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# $1 - App name
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# Flags:
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# --hosts - Host listen addresses
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# --server-name - Server name
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# --server-aliases - Server aliases
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# --enable-http - Enable HTTP app configuration (if not enabled already)
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# --enable-https - Enable HTTPS app configuration (if not enabled already)
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# --disable-http - Disable HTTP app configuration (if not disabled already)
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# --disable-https - Disable HTTPS app configuration (if not disabled already)
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# --http-port - HTTP port number
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# --https-port - HTTPS port number
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# Returns:
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# true if the configuration was updated, false otherwise
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########################
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web_server_update_app_configuration() {
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local app="${1:?missing app}"
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shift
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local -a args web_servers
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args=("$app")
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# Validate arguments
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while [[ "$#" -gt 0 ]]; do
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case "$1" in
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# Common flags
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--enable-http \
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| --enable-https \
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| --disable-http \
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| --disable-https \
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)
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args+=("$1")
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;;
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--hosts \
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| --server-name \
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| --server-aliases \
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| --http-port \
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| --https-port \
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)
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args+=("$1" "${2:?missing value}")
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shift
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;;
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*)
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echo "Invalid command line flag $1" >&2
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return 1
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;;
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esac
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shift
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done
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read -r -a web_servers <<< "$(web_server_list)"
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for web_server in "${web_servers[@]}"; do
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web_server_execute "$web_server" "${web_server}_update_app_configuration" "${args[@]}"
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done
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}
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########################
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# Enable loading page, which shows users that the initialization process is not yet completed
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# Globals:
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# *
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# Arguments:
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# None
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# Returns:
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# None
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#########################
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web_server_enable_loading_page() {
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ensure_web_server_app_configuration_exists "__loading" --hosts "_default_" \
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--apache-additional-configuration "
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# Show a HTTP 503 Service Unavailable page by default
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RedirectMatch 503 ^/$
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# Show index.html if server is answering with 404 Not Found or 503 Service Unavailable status codes
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ErrorDocument 404 /index.html
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ErrorDocument 503 /index.html" \
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--nginx-additional-configuration "
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# Show a HTTP 503 Service Unavailable page by default
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location / {
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return 503;
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}
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# Show index.html if server is answering with 404 Not Found or 503 Service Unavailable status codes
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error_page 404 @installing;
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error_page 503 @installing;
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location @installing {
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rewrite ^(.*)$ /index.html break;
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}"
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web_server_reload
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}
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########################
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# Enable loading page, which shows users that the initialization process is not yet completed
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# Globals:
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# *
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# Arguments:
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# None
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# Returns:
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# None
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#########################
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web_server_disable_install_page() {
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ensure_web_server_app_configuration_not_exists "__loading"
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web_server_reload
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}
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