kopia lustrzana https://github.com/mumble-voip/mumble-docker
Merge PR #6: Simplify entrypoint script a little bit
Robert Adam
GitHub
commit
6a9d8f5cdb
158
entrypoint.sh
158
entrypoint.sh
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@ -1,136 +1,106 @@
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#!/usr/bin/env bash
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set -e
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DATA_DIR="/data"
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BARE_BONES_CONFIG_FILE="/etc/mumble/bare_config.ini"
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CONFIG_FILE="${DATA_DIR}/mumble_server_config.ini"
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readonly DATA_DIR="/data"
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readonly BARE_BONES_CONFIG_FILE="/etc/mumble/bare_config.ini"
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readonly CONFIG_FILE="${DATA_DIR}/mumble_server_config.ini"
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readonly CONFIG_REGEX="^(\;|\#)?\ *([a-zA-Z_0-9]+)=.*"
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# Compile list of configuration options from the bare-bones config
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readarray -t existing_config_options < <(sed -En "s/$CONFIG_REGEX/\2/p" "$BARE_BONES_CONFIG_FILE")
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# Grab the original command line that is supposed to start the Mumble server
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server_invocation=( "${@}" )
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declare -a server_invocation=("${@}")
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declare -a used_configs
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array_contains () {
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local array="$1[@]"
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local seeking=$2
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local contained=false
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for element in "${!array}"; do
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if [[ $element == "$seeking" ]]; then
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contained=true
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break
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fi
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normalize_name() {
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local uppercase="${1^^}"
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echo "${uppercase//_/}"
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}
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# Create an associative array for faster config option lookup
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declare -A option_for
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for config in "${existing_config_options[@]}"; do
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option_for["$(normalize_name "$config")"]="$config"
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done
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array_contains() {
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local array_expansion="$1[@]" seeking="$2"
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for element in "${!array_expansion}"; do
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[[ "$element" = "$seeking" ]] && return 0
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done
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echo "$contained"
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return 1
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}
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set_config() {
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local config_name="$1"
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local config_value="$2"
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local is_default="$3"
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local config_name="$1" config_value="$2" is_default="$3"
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local apply_value=true
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# Don't use default value if the user already set one
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if [ "$is_default" = "true" ]; then
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contained=$( array_contains used_configs "$config_name" )
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if [[ "$contained" = "true" ]]; then
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apply_value=false
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fi
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fi
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if [ "$apply_value" = "true" ]; then
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echo "Setting config \"$config_name\" to: '$config_value'"
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used_configs+=("$config_name")
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# Append config to our on-the-fly-built config file
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echo "${config_name}=${config_value}" >> "$CONFIG_FILE"
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fi
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[[ "$is_default" = true ]] && array_contains "used_configs" "$config_name" && \
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apply_value=false # Don't use default value if the user already set one!
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[[ "$apply_value" != true ]] && return 0
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echo "Setting config \"$config_name\" to: '$config_value'"
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used_configs+=("$config_name")
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# Append config to our on-the-fly-built config file
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echo "${config_name}=${config_value}" >> "$CONFIG_FILE"
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}
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# Drop the user into a shell, if they so wish
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if [ "$1" = "bash" ] || [ "$1" = "sh" ]; then
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if [[ "$1" = "bash" || "$1" = "sh" ]]; then
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echo "Dropping into interactive BASH session"
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exec "${@}"
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fi
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if [ -f "$MUMBLE_CUSTOM_CONFIG_FILE" ]; then
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# Just use the config file specified by the user and don't bother assembling our own
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if [[ -f "$MUMBLE_CUSTOM_CONFIG_FILE" ]]; then
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echo "Using manually specified config file at $MUMBLE_CUSTOM_CONFIG_FILE"
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echo "All MUMBLE_CONFIG variables will be ignored"
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CONFIG_FILE="$MUMBLE_CUSTOM_CONFIG_FILE"
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else
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# As a first step, we ensure that the config file is empty, so we can always start from a clean slate
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# Ensures the config file is empty, starting from a clean slate
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echo -e "# Config file automatically generated from the MUMBLE_CONFIG_* environment variables\n" > "${CONFIG_FILE}"
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used_configs=()
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existing_config_options=()
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####
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# Check what kind of configurations there exist in the bare bones config file
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####
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while read -r line; do
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if [[ "$line" =~ ^(\;|\#)?\ *([a-zA-Z_0-9]+)=.* ]]; then
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existing_config_options+=("${BASH_REMATCH[2]}")
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fi
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done < "$BARE_BONES_CONFIG_FILE"
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####
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# Process settings following environments variables starting with "MUMBLE_CONFIG_"
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# Iterate over all environment variable key, value pairs and check if they match our naming scheme
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####
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# Process settings through variables of format MUMBLE_CONFIG_*
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while IFS='=' read -d '' -r var value; do
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if [[ "$var" == "MUMBLE_CONFIG_"* ]]; then
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uppercase_variable=${var/MUMBLE_CONFIG_/}
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config_option="${option_for[$(normalize_name "$var")]}"
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# Remove underscores (to ensure that it doesn't matter whether the user
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# uses e.g. MUMBLE_CONFIG_DB_BLA or MUMBLE_CONFIG_DBBLA)
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uppercase_variable_no_underscores="${uppercase_variable//_/}"
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found=false
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for current_config in "${existing_config_options[@]}"; do
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# convert to uppercase
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upper_current_config=${current_config^^}
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if [ "$upper_current_config" = "$uppercase_variable" ] || [ "$upper_current_config" = "$uppercase_variable_no_underscores" ]; then
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set_config "$current_config" "$value"
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found=true
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break
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fi
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done
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if [ "$found" = "false" ]; then
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>&2 echo "[ERROR]: Unable to find config corresponding to variable \"$var\""
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exit 1
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fi
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if [[ -z "$config_option" ]]; then
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>&2 echo "[ERROR]: Unable to find config corresponding to variable \"$var\""
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exit 1
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fi
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done < <( printenv --null ) # Feeding it in like this, prevents the creation of a subshell for the while-loop
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####
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# Default settings (will apply only, if user hasn't specified the respective config options themselves)
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####
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set_config "$config_option" "$value"
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done < <( printenv --null | sed -zn 's/^MUMBLE_CONFIG_//p' )
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# ^ Feeding it in like this, prevents the creation of a subshell for the while-loop
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# Apply default settings if they're missing
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set_config "database" "${DATA_DIR}/murmur.sqlite" true
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set_config "ice" "\"tcp -h 127.0.0.1 -p 6502\"" true
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set_config "welcometext" "\"<br />Welcome to this server, running the official Mumble Docker image.<br />Enjoy your stay!<br />\"" true
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set_config "port" 64738 true
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set_config "users" 100 true
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# Add ICE section
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echo -e "\n[Ice]" >> "$CONFIG_FILE"
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echo "Ice.Warn.UnknownProperties=1" >> "$CONFIG_FILE"
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echo "Ice.MessageSizeMax=65536" >> "$CONFIG_FILE"
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{ # Add ICE section
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echo -e "\n[Ice]"
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echo "Ice.Warn.UnknownProperties=1"
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echo "Ice.MessageSizeMax=65536"
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} >> "$CONFIG_FILE"
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fi
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####
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# Additionnal environement variables
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####
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if [ -n "$MUMBLE_VERBOSE" ] && [ "$MUMBLE_VERBOSE" = true ]; then
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server_invocation+=( "-v" )
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fi
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# Additional environment variables
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# Make sure the correct config file will be used
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[[ "$MUMBLE_VERBOSE" = true ]] && server_invocation+=( "-v" )
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# Make sure the correct configuration file is used
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server_invocation+=( "-ini" "${CONFIG_FILE}")
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####
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# Variable to change the superuser password
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####
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if [ -n "${MUMBLE_SUPERUSER_PASSWORD}" ]; then
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if [[ -n "${MUMBLE_SUPERUSER_PASSWORD}" ]]; then
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"${server_invocation[@]}" -supw "$MUMBLE_SUPERUSER_PASSWORD"
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echo "Successfully configured superuser password"
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fi
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@ -140,7 +110,7 @@ echo "Running Mumble server as uid=$(id -u) gid=$(id -g)"
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echo "\"${DATA_DIR}\" has the following permissions set:"
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echo " $( stat ${DATA_DIR} --printf='%A, owner: \"%U\" (UID: %u), group: \"%G\" (GID: %g)' )"
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echo "Command run to start the service : ${server_invocation[@]}"
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echo "Command run to start the service : ${server_invocation[*]}"
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echo "Starting..."
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exec "${server_invocation[@]}"
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