From d7da9bc8ca96689c380130fb122ef1cc97b163f8 Mon Sep 17 00:00:00 2001
From: Josh Jameson <josh@servebyte.com>
Date: Wed, 30 Sep 2020 16:49:44 +0100
Subject: [PATCH] Added support for sockets and empty passwords (#44)

* Add socket support (via PDNS_gmysql_socket)

* Update docker-entrypoint.sh

* Update docker-entrypoint.sh
---
 pdns/docker-entrypoint.sh | 20 +++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

diff --git a/pdns/docker-entrypoint.sh b/pdns/docker-entrypoint.sh
index f9512c8..e428059 100755
--- a/pdns/docker-entrypoint.sh
+++ b/pdns/docker-entrypoint.sh
@@ -7,7 +7,7 @@ set -euo pipefail
 : "${PDNS_gmysql_port:=${MYSQL_ENV_MYSQL_PORT:-3306}}"
 : "${PDNS_gmysql_user:=${MYSQL_ENV_MYSQL_USER:-root}}"
 if [ "${PDNS_gmysql_user}" = 'root' ]; then
-    : "${PDNS_gmysql_password:=$MYSQL_ENV_MYSQL_ROOT_PASSWORD}"
+    : "${PDNS_gmysql_password:=${MYSQL_ENV_MYSQL_ROOT_PASSWORD:-}}"
 fi
 : "${PDNS_gmysql_password:=${MYSQL_ENV_MYSQL_PASSWORD:-powerdns}}"
 : "${PDNS_gmysql_dbname:=${MYSQL_ENV_MYSQL_DATABASE:-powerdns}}"
@@ -21,14 +21,28 @@ fi
 
 export PDNS_gmysql_host PDNS_gmysql_port PDNS_gmysql_user PDNS_gmysql_password PDNS_gmysql_dbname
 
-# Initialize DB if needed
-MYSQL_COMMAND="mysql -h ${PDNS_gmysql_host} -P ${PDNS_gmysql_port} -u ${PDNS_gmysql_user} -p${PDNS_gmysql_password}"
+EXTRA=""
 
+# Password Auth
+if [ "${PDNS_gmysql_password}" != "" ]; then
+    EXTRA="${EXTRA} -p${PDNS_gmysql_password}"
+fi
+
+# Allow socket connections
+if [ "${PDNS_gmysql_socket}" != "" ]; then
+    export PDNS_gmysql_host="localhost"
+    EXTRA="${EXTRA} --socket=${PDNS_gmysql_socket}"
+fi
+
+MYSQL_COMMAND="mysql -h ${PDNS_gmysql_host} -P ${PDNS_gmysql_port} -u ${PDNS_gmysql_user}${EXTRA}"
+
+# Wait for MySQL to respond
 until $MYSQL_COMMAND -e ';' ; do
     >&2 echo 'MySQL is unavailable - sleeping'
     sleep 3
 done
 
+# Initialize DB if needed
 if [ "${SKIP_DB_CREATE:-false}" != 'true' ]; then
     $MYSQL_COMMAND -e "CREATE DATABASE IF NOT EXISTS ${PDNS_gmysql_dbname}"
 fi