docker-mailserver/target/bin/addalias

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#! /bin/bash
# shellcheck source=../scripts/helpers/index.sh
source /usr/local/bin/helpers/index.sh
DATABASE='/tmp/docker-mailserver/postfix-virtual.cf'
function __usage
{
printf '%s' "${PURPLE}ADDALIAS${RED}(${YELLOW}8${RED})
${ORANGE}NAME${RESET}
addalias - add an email alias for an existing user
${ORANGE}SYNOPSIS${RESET}
./setup.sh alias add <EMAIL ADDRESS> <RECIPIENT>
${ORANGE}OPTIONS${RESET}
${BLUE}Generic Program Information${RESET}
help Print the usage information.
${ORANGE}EXAMPLES${RESET}
${LWHITE}./setup.sh alias add alias-for-me@domain.tld admin@domain.tld${RESET}
Add the alias alias-for-me@doamin.tld for the existing user
admin@domain.tld.
${ORANGE}EXIT STATUS${RESET}
Exit status is 0 if command was successful. If wrong arguments are provided
or arguments contain errors, the script will exit early with exit status 1.
"
}
[[ ${1:-} == 'help' ]] && { __usage ; exit 0 ; }
EMAIL="${1}"
RECIPIENT="${2}"
[[ -z ${EMAIL} ]] && { __usage ; _exit_with_error 'No alias specified' ; }
[[ -z ${RECIPIENT} ]] && { __usage ; _exit_with_error 'No recipient specified' ; }
grep \
-qi "^$(_escape "${EMAIL}")[a-zA-Z@.\ ]*$(_escape "${RECIPIENT}")" \
"${DATABASE}" 2>/dev/null && _exit_with_error "Alias \"${EMAIL} ${RECIPIENT}\" already exists"
if grep -qi "^$(_escape "${EMAIL}")" "${DATABASE}" 2>/dev/null
then
sed -i "/${EMAIL}/s/$/,${RECIPIENT}/" "${DATABASE}"
else
echo "${EMAIL} ${RECIPIENT}" >> "${DATABASE}"
fi