support tilde paths in config validation

Author: ldt1996

validation/configValidator.js

@@ -226,9 +226,16 @@ function doesPathExist(pathToCheck) {
 }
 
 function validatePath(value, helpers) {
-	Joi.assert(value, string.pattern(/^[\\/]$|([\\/a-zA-Z_0-9:-]+)+$/, 'directory path'));
+	Joi.assert(value, string.pattern(/^[\\/~]$|([\\/~a-zA-Z_0-9:-]+)+$/, 'directory path'));
 
-	const resolvedValue = path.isAbsolute(value) ? value : path.join(hdbRoot, value);
+	let resolvedValue;
+	if (value.startsWith('~/')) {
+		resolvedValue = path.join(os.homedir(), value.slice(1));
+	} else if (path.isAbsolute(value)) {
+		resolvedValue = value;
+	} else {
+		resolvedValue = path.join(hdbRoot, value);
+	}
 	const doesExistMsg = doesPathExist(resolvedValue);
 	if (doesExistMsg) {
 		return helpers.message(doesExistMsg);