Function _matchesValue

lib/api/apiUtils/object/corsResponse.js:7–18

_matchesValue - compare two values to determine if they match * @param {string} allowedValue - an allowed value in a CORS rule; * may contain wildcards * @param {string} value - value from CORS request * @return {boolean} - true/false

(allowedValue, value)

* @return {boolean} - true/false
*/
function _matchesValue(allowedValue, value) {
    const wildcardIndex = allowedValue.indexOf('*');
    // If no wildcards, simply return whether strings are equal
    if (wildcardIndex === -1) {
        return allowedValue === value;
    }
    // Otherwise make sure substrings match expected substrings before
    // and after the wildcard
    const beginValue = allowedValue.substring(0, wildcardIndex);
    const endValue = allowedValue.substring(wildcardIndex + 1);
    return (value.startsWith(beginValue) && value.endsWith(endValue));
}

/** _matchesOneOf - check if header matches any AllowedHeaders of a rule
* @param {string[]} allowedHeaders - headers allowed in CORS rule