0k-charms/nextcloud/hooks/sql_database-relation-joined

#!/bin/bash

. lib/common

set -e
TYPE="$(relation-get type)" || {
    err "No ${WHITE}type${NORMAL} set in relation."
    exit 1
}
PASSWORD="$(relation-get password)"
USER="$(relation-get user)"
DBNAME="$(relation-get dbname)"


## This check adds purely arbitrary limits to what could be a password
## if we need to open that more, just consider the next script where we'll
## need to write in a PHP structure, or in YAML structure.

## Note that here, "[]" chars are not accepted just because it doesn't seem evident
## to test for those in bash.
if ! [[ "$PASSWORD" =~ ^[a-zA-Z0-9~\`\&+=@\#^\*/\\_%\$:\;\!?.,\<\>{}()\"\'|-]*$ ]]; then
     err "Invalid password chosen for $type database."
     exit 1
fi

## if config is not existent
if [ -e "$CONFIGFILE" ] && grep "^  'dbuser' => '" "$CONFIGFILE" >/dev/null; then

    ## 'occ' can't be used as it will try to connect to db before running and
    ## will fail if user/password is not correct

    ## We need to get through bash, and sed interpretation, then PHP single quoted strings.
    quoted_user="${USER//\\/\\\\\\\\\\}"
    quoted_user="${quoted_user//\'/\\\\\'}"
    quoted_password="${PASSWORD//\\/\\\\\\\\\\}"
    quoted_password="${quoted_password//\'/\\\\\'}"
    case "$TYPE" in
        mysql)
            nextcloud_type="mysql";;
        postgres)
            nextcloud_type="pgsql";;
        *)
            err "Unknown type '$TYPE' for database."
            exit 1
            ;;
    esac

    sed -ri "s/^(  'dbuser' => ')(.*)(',)$/\1${quoted_user}\3/g;\
             s/^(  'dbpassword' => ')(.*)(',)$/\1${quoted_password}\3/g;\
             s/^(  'dbtype' => ')(.*)(',)$/\1${nextcloud_type}\3/g;\
             s/^(  'dbhost' => ')(.*)(',)$/\1${MASTER_TARGET_SERVICE_NAME}\3/g;\
             " "$CONFIGFILE"

else

    ## These variable are not used by current docker image after first install

    if [ "$TYPE" == "mysql" ]; then
        database_env_label="DATABASE"
    else
        database_env_label="DB"
    fi

    config-add "\
services:
  $MASTER_BASE_SERVICE_NAME:
    environment:
      ${TYPE^^}_HOST: $MASTER_TARGET_SERVICE_NAME
      ${TYPE^^}_${database_env_label}: $DBNAME
      ${TYPE^^}_PASSWORD: $PASSWORD
      ${TYPE^^}_USER: $USER
"
fi

info "Configured $SERVICE_NAME code for $TARGET_SERVICE_NAME access."