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#!/bin/bash
set -euo pipefail
# usage: file_env VAR [DEFAULT]
# ie: file_env 'XYZ_DB_PASSWORD' 'example'
# (will allow for "$XYZ_DB_PASSWORD_FILE" to fill in the value of
# "$XYZ_DB_PASSWORD" from a file, especially for Docker's secrets feature)
file_env() {
local var="$1"
local fileVar="${var}_FILE"
local def="${2:-}"
if [ "${!var:-}" ] && [ "${!fileVar:-}" ]; then
echo >&2 "error: both $var and $fileVar are set (but are exclusive)"
exit 1
fi
local val="$def"
if [ "${!var:-}" ]; then
val="${!var}"
elif [ "${!fileVar:-}" ]; then
val="$(< "${!fileVar}")"
fi
export "$var"="$val"
unset "$fileVar"
}
if [[ "$1" == apache2* ]] || [ "$1" == php-fpm ]; then
if [ "$(id -u)" = '0' ]; then
case "$1" in
apache2*)
user="${APACHE_RUN_USER:-www-data}"
group="${APACHE_RUN_GROUP:-www-data}"
;;
*) # php-fpm
user='www-data'
group='www-data'
;;
esac
else
user="$(id -u)"
group="$(id -g)"
fi
if [ ! -e index.php ] && [ ! -e wp-includes/version.php ]; then
echo >&2 "WordPress not found in $PWD - copying now..."
if [ "$(ls -A)" ]; then
echo >&2 "WARNING: $PWD is not empty - press Ctrl+C now if this is an error!"
( set -x; ls -A; sleep 10 )
fi
tar --create \
--file - \
--directory /usr/src/wordpress \
--owner "$user" --group "$group" \
. | tar --extract --file -
echo >&2 "Complete! WordPress has been successfully copied to $PWD"
if [ ! -e .htaccess ]; then
# NOTE: The "Indexes" option is disabled in the php:apache base image
cat > .htaccess <<-'EOF'
# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
# END WordPress
EOF
chown "$user:$group" .htaccess
fi
fi
# TODO handle WordPress upgrades magically in the same way, but only if wp-includes/version.php's $wp_version is less than /usr/src/wordpress/wp-includes/version.php's $wp_version
# allow any of these "Authentication Unique Keys and Salts." to be specified via
# environment variables with a "WORDPRESS_" prefix (ie, "WORDPRESS_AUTH_KEY")
uniqueEnvs=(
AUTH_KEY
SECURE_AUTH_KEY
LOGGED_IN_KEY
NONCE_KEY
AUTH_SALT
SECURE_AUTH_SALT
LOGGED_IN_SALT
NONCE_SALT
)
envs=(
WORDPRESS_DB_HOST
WORDPRESS_DB_USER
WORDPRESS_DB_PASSWORD
WORDPRESS_DB_NAME
WORDPRESS_DB_CHARSET
WORDPRESS_DB_COLLATE
"${uniqueEnvs[@]/#/WORDPRESS_}"
WORDPRESS_TABLE_PREFIX
WORDPRESS_DEBUG
WORDPRESS_CONFIG_EXTRA
)
haveConfig=
for e in "${envs[@]}"; do
file_env "$e"
if [ -z "$haveConfig" ] && [ -n "${!e}" ]; then
haveConfig=1
fi
done
# linking backwards-compatibility
if [ -n "${!MYSQL_ENV_MYSQL_*}" ]; then
haveConfig=1
# host defaults to "mysql" below if unspecified
: "${WORDPRESS_DB_USER:=${MYSQL_ENV_MYSQL_USER:-root}}"
if [ "$WORDPRESS_DB_USER" = 'root' ]; then
: "${WORDPRESS_DB_PASSWORD:=${MYSQL_ENV_MYSQL_ROOT_PASSWORD:-}}"
else
: "${WORDPRESS_DB_PASSWORD:=${MYSQL_ENV_MYSQL_PASSWORD:-}}"
fi
: "${WORDPRESS_DB_NAME:=${MYSQL_ENV_MYSQL_DATABASE:-}}"
fi
# only touch "wp-config.php" if we have environment-supplied configuration values
if [ "$haveConfig" ]; then
: "${WORDPRESS_DB_HOST:=mysql}"
: "${WORDPRESS_DB_USER:=root}"
: "${WORDPRESS_DB_PASSWORD:=}"
: "${WORDPRESS_DB_NAME:=wordpress}"
: "${WORDPRESS_DB_CHARSET:=utf8}"
: "${WORDPRESS_DB_COLLATE:=}"
# version 4.4.1 decided to switch to windows line endings, that breaks our seds and awks
# https://github.com/docker-library/wordpress/issues/116
# https://github.com/WordPress/WordPress/commit/1acedc542fba2482bab88ec70d4bea4b997a92e4
sed -ri -e 's/\r$//' wp-config*
if [ ! -e wp-config.php ]; then
awk '
/^\/\*.*stop editing.*\*\/$/ && c == 0 {
c = 1
system("cat")
if (ENVIRON["WORDPRESS_CONFIG_EXTRA"]) {
print "// WORDPRESS_CONFIG_EXTRA"
print ENVIRON["WORDPRESS_CONFIG_EXTRA"] "\n"
}
}
{ print }
' wp-config-sample.php > wp-config.php <<'EOPHP'
// If we're behind a proxy server and using HTTPS, we need to alert Wordpress of that fact
// see also http://codex.wordpress.org/Administration_Over_SSL#Using_a_Reverse_Proxy
if (isset($_SERVER['HTTP_X_FORWARDED_PROTO']) && $_SERVER['HTTP_X_FORWARDED_PROTO'] === 'https') {
$_SERVER['HTTPS'] = 'on';
}
EOPHP
chown "$user:$group" wp-config.php
elif [ -e wp-config.php ] && [ -n "$WORDPRESS_CONFIG_EXTRA" ] && [[ "$(< wp-config.php)" != *"$WORDPRESS_CONFIG_EXTRA"* ]]; then
# (if the config file already contains the requested PHP code, don't print a warning)
echo >&2
echo >&2 'WARNING: environment variable "WORDPRESS_CONFIG_EXTRA" is set, but "wp-config.php" already exists'
echo >&2 ' The contents of this variable will _not_ be inserted into the existing "wp-config.php" file.'
echo >&2 ' (see https://github.com/docker-library/wordpress/issues/333 for more details)'
echo >&2
fi
# see http://stackoverflow.com/a/2705678/433558
sed_escape_lhs() {
echo "$@" | sed -e 's/[]\/$*.^|[]/\\&/g'
}
sed_escape_rhs() {
echo "$@" | sed -e 's/[\/&]/\\&/g'
}
php_escape() {
local escaped="$(php -r 'var_export(('"$2"') $argv[1]);' -- "$1")"
if [ "$2" = 'string' ] && [ "${escaped:0:1}" = "'" ]; then
escaped="${escaped//$'\n'/"' + \"\\n\" + '"}"
fi
echo "$escaped"
}
set_config() {
key="$1"
value="$2"
var_type="${3:-string}"
start="(['\"])$(sed_escape_lhs "$key")\2\s*,"
end="\);"
if [ "${key:0:1}" = '$' ]; then
start="^(\s*)$(sed_escape_lhs "$key")\s*="
end=";"
fi
sed -ri -e "s/($start\s*).*($end)$/\1$(sed_escape_rhs "$(php_escape "$value" "$var_type")")\3/" wp-config.php
}
set_config 'DB_HOST' "$WORDPRESS_DB_HOST"
set_config 'DB_USER' "$WORDPRESS_DB_USER"
set_config 'DB_PASSWORD' "$WORDPRESS_DB_PASSWORD"
set_config 'DB_NAME' "$WORDPRESS_DB_NAME"
set_config 'DB_CHARSET' "$WORDPRESS_DB_CHARSET"
set_config 'DB_COLLATE' "$WORDPRESS_DB_COLLATE"
for unique in "${uniqueEnvs[@]}"; do
uniqVar="WORDPRESS_$unique"
if [ -n "${!uniqVar}" ]; then
set_config "$unique" "${!uniqVar}"
else
# if not specified, let's generate a random value
currentVal="$(sed -rn -e "s/define\((([\'\"])$unique\2\s*,\s*)(['\"])(.*)\3\);/\4/p" wp-config.php)"
if [ "$currentVal" = 'put your unique phrase here' ]; then
set_config "$unique" "$(head -c1m /dev/urandom | sha1sum | cut -d' ' -f1)"
fi
fi
done
if [ "$WORDPRESS_TABLE_PREFIX" ]; then
set_config '$table_prefix' "$WORDPRESS_TABLE_PREFIX"
fi
if [ "$WORDPRESS_DEBUG" ]; then
set_config 'WP_DEBUG' 1 boolean
fi
TERM=dumb php -- <<'EOPHP'
<?php
// database might not exist, so let's try creating it (just to be safe)
$stderr = fopen('php://stderr', 'w');
// https://codex.wordpress.org/Editing_wp-config.php#MySQL_Alternate_Port
// "hostname:port"
// https://codex.wordpress.org/Editing_wp-config.php#MySQL_Sockets_or_Pipes
// "hostname:unix-socket-path"
list($host, $socket) = explode(':', getenv('WORDPRESS_DB_HOST'), 2);
$port = 0;
if (is_numeric($socket)) {
$port = (int) $socket;
$socket = null;
}
$user = getenv('WORDPRESS_DB_USER');
$pass = getenv('WORDPRESS_DB_PASSWORD');
$dbName = getenv('WORDPRESS_DB_NAME');
$maxTries = 10;
do {
$mysql = new mysqli($host, $user, $pass, '', $port, $socket);
if ($mysql->connect_error) {
fwrite($stderr, "\n" . 'MySQL Connection Error: (' . $mysql->connect_errno . ') ' . $mysql->connect_error . "\n");
--$maxTries;
if ($maxTries <= 0) {
exit(1);
}
sleep(3);
}
} while ($mysql->connect_error);
if (!$mysql->query('CREATE DATABASE IF NOT EXISTS `' . $mysql->real_escape_string($dbName) . '`')) {
fwrite($stderr, "\n" . 'MySQL "CREATE DATABASE" Error: ' . $mysql->error . "\n");
$mysql->close();
exit(1);
}
$mysql->close();
EOPHP
fi
# now that we're definitely done writing configuration, let's clear out the relevant envrionment variables (so that stray "phpinfo()" calls don't leak secrets from our code)
for e in "${envs[@]}"; do
unset "$e"
done
fi
exec "$@"