mirror of
https://github.com/bokysan/docker-postfix.git
synced 2024-09-20 06:46:10 +08:00
4b46b1d173
This is a really dirt fix for issue #180. It will replace "well-known" enumerated plugin names with SASL mechanism names. While this is more of a "bandage" than the actual proper fix, I have currently found no better ways to do it. Most likely this issue will rise up again with another SASL plugin and we will deal with it then. At this stage, it should cover most of the use cases transparently.
288 lines
7.4 KiB
Bash
Executable file
288 lines
7.4 KiB
Bash
Executable file
#!/usr/bin/env bash
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declare reset green yellow orange orange_emphasis lightblue red gray emphasis underline
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##################################################################################
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# Check if one string is contained in another.
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# Parameters:
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# $1 string to check
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# $2 the substring
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#
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# Exists:
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# 0 (success) if $2 is in $1
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# 1 (fail) if $2 is NOT in $1
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#
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# Example:
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# contains "foobar" "bar" -> 0 (true)
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# coinains "foobar" "e" -> 1 (false)
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#
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##################################################################################
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contains() {
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string="$1"
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substring="$2"
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if test "${string#*$substring}" != "$string"; then return 0; else return 1; fi
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}
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##################################################################################
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# Check if we're running on a color term or not and setup color codes appropriately
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##################################################################################
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is_color_term() {
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if test -t 1 || [[ -n "$FORCE_COLOR" ]]; then
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# Quick and dirty test for color support
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if [ "$FORCE_COLOR" == "256" ] || contains "$TERM" "256" || contains "$COLORTERM" "256" || contains "$COLORTERM" "color" || contains "$COLORTERM" "24bit"; then
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reset="$(printf '\033[0m')"
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green="$(printf '\033[38;5;46m')"
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yellow="$(printf '\033[38;5;178m')"
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orange="$(printf '\033[38;5;208m')"
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orange_emphasis="$(printf '\033[38;5;220m')"
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lightblue="$(printf '\033[38;5;147m')"
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red="$(printf '\033[91m')"
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gray="$(printf '\033[38;5;245m')"
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emphasis="$(printf '\033[38;5;111m')"
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underline="$(printf '\033[4m')"
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elif [ -n "$FORCE_COLOR" ] || contains "$TERM" "xterm"; then
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reset="$(printf '\033[0m')"
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green="$(printf '\033[32m')"
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yellow="$(printf '\033[33m')"
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orange="$(printf '\033[31m')"
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orange_emphasis="$(printf '\033[31m\033[1m')"
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lightblue="$(printf '\033[36;1m')"
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red="$(printf '\033[31;1m')"
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gray="$(printf '\033[30;1m')"
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emphasis="$(printf '\033[1m')"
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underline="$(printf '\033[4m')"
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fi
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fi
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}
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is_color_term
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deprecated() {
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printf "${reset}‣ ${lightblue}DEPRECATED!${reset} "
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echo -e "$@${reset}"
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}
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debug() {
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printf "${reset}‣ ${gray}DEBUG${reset} "
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echo -e "$@${reset}"
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}
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info() {
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printf "${reset}‣ ${green}INFO ${reset} "
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echo -e "$@${reset}"
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}
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infon() {
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printf "${reset}‣ ${green}INFO ${reset} "
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echo -en "$@${reset}"
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}
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notice() {
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printf "${reset}‣ ${yellow}NOTE ${reset} "
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echo -e "$@${reset}"
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}
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noticen() {
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printf "${reset}‣ ${yellow}NOTE ${reset} "
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echo -en "$@${reset}"
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}
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warn() {
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printf "${reset}‣ ${orange}WARN ${reset} "
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echo -e "$@${reset}"
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}
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error() {
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printf "${reset}‣ ${red}ERROR${reset} " >&2
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echo -e "$@${reset}" >&2
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}
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fatal_no_exit() {
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printf "${reset}‣ ${red}FATAL${reset} " >&2
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echo -e "$@${reset}" >&2
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}
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fatal() {
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fatal_no_exit $@
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exit 1
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}
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# Return a DKIM selector from DKIM_SELECTOR environment variable.
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# See README.md for details.
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get_dkim_selector() {
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if [[ -z "${DKIM_SELECTOR}" ]]; then
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echo "mail"
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return
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fi
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local domain="$1"
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local old="$IFS"
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local no_domain_selector="mail"
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local IFS=","
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for part in ${DKIM_SELECTOR}; do
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if contains "$part" "="; then
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k="$(echo "$part" | cut -f1 -d=)"
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v="$(echo "$part" | cut -f2 -d=)"
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if [ "$k" == "$domain" ]; then
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echo "$v"
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IFS="${old}"
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return
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fi
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else
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no_domain_selector="$part"
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fi
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done
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IFS="${old}"
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echo "${no_domain_selector}"
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}
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do_postconf() {
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local is_clear
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local has_commented_key
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local has_key
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local key
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if [[ "$1" == "-#" ]]; then
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is_clear=1
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shift
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key="$1"
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shift
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if grep -q -E "^${key}\s*=" /etc/postfix/main.cf; then
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has_key="1"
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fi
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if grep -q -E "^#\s*${key}\s*=" /etc/postfix/main.cf; then
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has_commented_key="1"
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fi
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if [[ "${has_key}" == "1" ]] && [[ "${has_commented_key}" == "1" ]]; then
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# The key appears in the comment as well as outside the comment.
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# Delete the key which is outside of the comment
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sed -i -e "/^${key}\s*=/ { :a; N; /^\s/ba; N; d }" /etc/postfix/main.cf
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elif [[ "${has_key}" == "1" ]]; then
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# Comment out the key with postconf
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postconf -# "${key}" > /dev/null
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else
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# No key or only commented key, do nothing
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:
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fi
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else
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# Add the line normally
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shift
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postconf -e "$@"
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fi
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}
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############################
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# Read a configuration from postfix configuration
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############################
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get_postconf() {
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local name="${1}"
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local result
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local error
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# This will throw a warning if the config option does not exist, e.g.
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# postconf: warning: foo_bar: unknown parameter
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# This is a bash magic to capture both out and error in the same line.
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# We're just basically calling "postconf <name>"
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. <({ error=$({ result="$(postconf "${name}")"; } 2>&1; declare -p result >&2); declare -p error; } 2>&1)
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if [[ -n "${error}" ]]; then
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error: "Could not read variable ${emphasis}${name}${reset}: ${error}"
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return
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fi
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result="${result#*=}"
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result="${result#"${result%%[![:space:]]*}"}" # remove leading whitespace characters
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result="${result%"${result##*[![:space:]]}"}" # remove trailing whitespace characters
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printf '%s' "${result}"
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}
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# usage: file_env VAR [DEFAULT]
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# ie: file_env 'XYZ_DB_PASSWORD' 'example'
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# (will allow for "$XYZ_DB_PASSWORD_FILE" to fill in the value of
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# "$XYZ_DB_PASSWORD" from a file, especially for Docker's secrets feature)
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#
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file_env() {
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local var="$1"
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local fileVar="${var}_FILE"
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local def="${2:-}"
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if [ "${!var:-}" ] && [ "${!fileVar:-}" ]; then
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error "Both $var and $fileVar are set (but are exclusive)"
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fi
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local val="$def"
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if [ "${!var:-}" ]; then
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val="${!var}"
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elif [ "${!fileVar:-}" ]; then
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val="$(< "${!fileVar}")"
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fi
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export "$var"="$val"
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unset "$fileVar"
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}
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# Return the directory where zone info is stored. Will return empy string if zoneinfo not found
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zone_info_dir() {
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[[ -d /usr/share/zoneinfo ]] && printf "/usr/share/zoneinfo" && return
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[[ -d /var/db/timezone/zoneinfo ]] && printf "/var/db/timezone/zoneinfo" && return
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[[ -d /usr/lib/zoneinfo ]] && printf "/usr/lib/zoneinfo" && return
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return
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}
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###################################################################
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# Remove leading and trailing whitespace from string
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###################################################################
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trim() {
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local var
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IFS='' read -d -r var
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#var="$(<&1)"
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# remove leading whitespace characters
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var="${var#"${var%%[![:space:]]*}"}"
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# remove trailing whitespace characters
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var="${var%"${var##*[![:space:]]}"}"
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printf '%s' "${var}"
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}
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###################################################################
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# Potential fix for #180. Plugin names do not neccessarily match
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# filter names.
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#
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# This is an utility method which converts SASL plugin names into
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# filter names. There's no reliable way to guess this, so the names
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# have been hardcoded here.
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#
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# INPUT:
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# The method expects as an input a list of plugin names, comma
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# separated.
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#
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# OUTPUT:
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# The list of plugin names, comma separated.
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###################################################################
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convert_plugin_names_to_filter_names() {
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local line first value lowercase
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while IFS=$',' read -ra line; do
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for value in "${line[@]}"; do
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value="$(printf '%s' "${value}" | trim)"
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if [[ -z "${value}" ]]; then
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continue;
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fi
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if [[ -z "${first}" ]]; then
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first="0"
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else
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printf '%s' ','
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fi
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lowercase="${value,,}"
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if [[ "${lowercase}" == "digestmd5" ]]; then
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printf '%s' 'DIGEST-MD5'
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elif [[ "${lowercase}" == "crammd5" ]]; then
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printf '%s' 'CRAM-MD5'
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else
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printf '%s' "${value}"
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fi
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done
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done
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}
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export reset green yellow orange orange_emphasis lightblue red gray emphasis underline
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