Mini Shell

#!/usr/bin/bash
#######################################
# Timed-out wrapper around wp-cli
# Arguments:
#   $1 - Path to PHP binary, full filesystem path
#   $2 - Path to Wordpress installation, full filesystem path
#   All the rest arguments ($@) are treated as WP-CLI command
# Outputs:
#   Writes result to stdout
#######################################
PATH_TO_PHP="$1"
PATH_TO_WP="$2"

shift 2;

CODE=0

# WPOS wp-cli
WP_CLI="/opt/clwpos/wp-cli"

# Defaults for PHP
PHP_EXTRA_OPTIONS="-d memory_limit=-1 -d open_basedir=none"
PHP_DEFAULT_EXTENSIONS="phar"

# pick other extensions based on PHP version
PHP_VERSION_PARTS=($($PATH_TO_PHP -v | head -n1 | sed -n -e 's/^.* \([0-9]\+\.[0-9]\+\.[0-9]\+\).*/\1/p' | tr '.' ' '))
PHP_VERSION_ID=$((PHP_VERSION_PARTS[0] * 10000 + PHP_VERSION_PARTS[1] * 100 + PHP_VERSION_PARTS[2]))

# PHP 8.0 and above have json extension enabled by default
if (( PHP_VERSION_ID < 80000 )); then
    PHP_DEFAULT_EXTENSIONS+=" json"
fi

# for PHP 8.2 and above mysqlnd must be loaded before mysqli
if (( PHP_VERSION_ID >= 80200 )); then
    PHP_DEFAULT_EXTENSIONS+=" mysqlnd"
fi

PHP_DEFAULT_EXTENSIONS+=" mysqli"

# explicitly drop PHP disable_functions directive in order to avoid errors like
# 'Error: Cannot do 'launch': The PHP functions `proc_open()` and/or `proc_close()` are disabled'
# during plugin manipulations
PHP_DEFAULT_FUNCTIONS="-d disable_functions= -d display_errors=0 -d error_log=/dev/null"

# Defaults for WP-CLI
WP_CLI_DEFAULT_OPTS=("--skip-themes") # Must be first [0]

# Passed via ENVVAR
if [ -n "${SKIP_PLUGINS_LOADING}" ]; then
    WP_CLI_DEFAULT_OPTS+=("--skip-plugins")
fi

# Find wp-config.php
WP_CONFIG_PATH="${PATH_TO_WP}/wp-config.php"
if [ ! -e "${WP_CONFIG_PATH}" ]; then
  # It's ok for wp-config.php to be in a subdirectory
  PARENT_PATH=$(dirname "${PATH_TO_WP}")
  WP_CONFIG_PATH="${PARENT_PATH}/wp-config.php"
fi

# Comment constants
if [ -e "${WP_CONFIG_PATH}" ]; then
  sed -i "/^[^#\/]*define\s*(\s*['\"]WP_DEBUG['\"]/s|^|//CL_DEFINE|" $WP_CONFIG_PATH
  sed -i "/^[^#\/]*define\s*(\s*['\"]WP_DEBUG_DISPLAY['\"]/s|^|//CL_DEFINE|" $WP_CONFIG_PATH
  sed -i "/^[^#\/]*define\s*(\s*['\"]DISABLE_WP_CRON['\"]/s|^|//CL_DEFINE|" $WP_CONFIG_PATH
fi

# Define constants
WP_CLI_DEFAULT_OPTS+=("--exec=define('WP_DEBUG', true);")
WP_CLI_DEFAULT_OPTS+=("--exec=define('WP_DEBUG_DISPLAY', false);")
WP_CLI_DEFAULT_OPTS+=("--exec=define('DISABLE_WP_CRON', true);")

# Default timeout, formatted as for timeout command (GNU coreutils)
# 2 minutes (120 seconds)
TIMEOUT="2m"

# Construct PHP extensions to include
EXTS=""
for ext in $PHP_DEFAULT_EXTENSIONS
do
  if ! $PATH_TO_PHP -m | grep -i "$ext" 1>/dev/null; then
    EXTS+=" -d extension=$ext.so"
  fi
done

# change current working directory
# we need this because if php code has relative imports
# it looks for scripts inside current directory first
# e.g. some providers add require('wp-salt.php') to config
# https://stackoverflow.com/questions/75823716/
# the overall approach of relative import is not correct,
# but we still need patch for this
cd "${PATH_TO_WP}"
if [[ "$1" == "help" ]]; then
  exec timeout $TIMEOUT \
    $PATH_TO_PHP $EXTS $PHP_EXTRA_OPTIONS $PHP_DEFAULT_FUNCTIONS \
    $WP_CLI --path=$PATH_TO_WP "${WP_CLI_DEFAULT_OPTS[@]}" "$@" | cat
else
  WP_CLI_RESULT=$(exec timeout $TIMEOUT \
               $PATH_TO_PHP $EXTS $PHP_EXTRA_OPTIONS $PHP_DEFAULT_FUNCTIONS \
               $WP_CLI --path=$PATH_TO_WP "${WP_CLI_DEFAULT_OPTS[@]}" "$@")
  WP_CLI_CODE=$?

  # Not 0 and not 1 because WP-CLI has commands that return status as the result of the command execution
  # For example plugin is-active, exit status 0 if active, otherwise 1
  # Calling an error at the php level will return 255
  # Let's try to run the command without --skip-themes
  if [ "$WP_CLI_CODE" -ne 0 ] && [ "$WP_CLI_CODE" -ne 1 ]; then
    echo "Retry without --skip-themes" >&2
    unset WP_CLI_DEFAULT_OPTS[0]

    WP_CLI_RESULT=$(exec timeout $TIMEOUT \
                 $PATH_TO_PHP $EXTS $PHP_EXTRA_OPTIONS $PHP_DEFAULT_FUNCTIONS \
                 $WP_CLI --path=$PATH_TO_WP "${WP_CLI_DEFAULT_OPTS[@]}" "$@")
    WP_CLI_CODE=$?
  fi

  printf '%s' "$WP_CLI_RESULT"
  CODE=$WP_CLI_CODE
fi

cleanup() {
  if [ -e "${WP_CONFIG_PATH}" ]; then
    sed -i "s|^//CL_DEFINE||" $WP_CONFIG_PATH
  fi
}

trap cleanup EXIT

exit $CODE