/// <summary>
/// Converts the specified string representation of an HTTP cookie to HttpCookie
/// </summary>
/// <param name="input"></param>
/// <param name="result"></param>
/// <returns></returns>
public static bool TryParse(string input, out HttpCookie result)
{
result = null;
if (string.IsNullOrEmpty(input))
{
return(false);
}
// The substring before the first ';' is cookie-pair, with format of cookiename[=key1=val2&key2=val2&...]
int dividerIndex = input.IndexOf(';');
string cookiePair = dividerIndex >= 0 ? input.Substring(0, dividerIndex) : input;
HttpCookie cookie = HttpRequest.CreateCookieFromString(cookiePair.Trim());
// If there was no cookie name being created, stop parsing and return
if (string.IsNullOrEmpty(cookie.Name))
{
return(false);
}
//
// Parse the collections of cookie-av
// cookie-av = expires-av/max-age-av/domain-av/path-av/secure-av/httponly-av/extension-av
// https://tools.ietf.org/html/rfc6265
while (dividerIndex >= 0 && dividerIndex < input.Length - 1)
{
int cookieAvStartIndex = dividerIndex + 1;
dividerIndex = input.IndexOf(';', cookieAvStartIndex);
string cookieAv = dividerIndex >= 0 ? input.Substring(cookieAvStartIndex, dividerIndex - cookieAvStartIndex).Trim() : input.Substring(cookieAvStartIndex).Trim();
int assignmentIndex = cookieAv.IndexOf('=');
string attributeName = assignmentIndex >= 0 ? cookieAv.Substring(0, assignmentIndex).Trim() : cookieAv;
string attributeValue = assignmentIndex >= 0 && assignmentIndex < cookieAv.Length - 1 ? cookieAv.Substring(assignmentIndex + 1).Trim() : null;
//
// Parse supported cookie-av Attribute
//
// Expires
if (StringUtil.EqualsIgnoreCase(attributeName, "Expires"))
{
DateTime dt;
if (DateTime.TryParse(attributeValue, out dt))
{
cookie.Expires = dt;
}
}
//
// Domain
else if (attributeValue != null && StringUtil.EqualsIgnoreCase(attributeName, "Domain"))
{
cookie.Domain = attributeValue;
}
//
// Path
else if (attributeValue != null && StringUtil.EqualsIgnoreCase(attributeName, "Path"))
{
cookie.Path = attributeValue;
}
//
// Secure
else if (StringUtil.EqualsIgnoreCase(attributeName, "Secure"))
{
cookie.Secure = true;
}
//
// HttpOnly
else if (StringUtil.EqualsIgnoreCase(attributeName, "HttpOnly"))
{
cookie.HttpOnly = true;
}
//
// SameSite
else if (StringUtil.EqualsIgnoreCase(attributeName, "SameSite"))
{
SameSiteMode sameSite = (SameSiteMode)(-1);
if (Enum.TryParse <SameSiteMode>(attributeValue, true, out sameSite))
{
cookie.SameSite = sameSite;
}
}
}
result = cookie;
return(true);
}
