/// <summary>
/// Check if the browser user agent string matches this rule.
/// </summary>
private bool MatchRule(BrowserInfo browserInfo, BrowserRule browserRule)
{
// check if OS name matches ('*' will be Unknown, which means skip this check)
if (browserRule.OSName != BrowserOS.Unknown &&
browserInfo.OSName != browserRule.OSName)
{
return(false);
}
// check if OS meets minimum version (0 means skip this check)
if (browserRule.OSMinVersion > 0 &&
browserInfo.OSVersion < browserRule.OSMinVersion)
{
return(false);
}
// check if OS meets maximum version (0 means skip this check)
if (browserRule.OSMaxVersion > 0 &&
browserInfo.OSVersion > browserRule.OSMaxVersion)
{
return(false);
}
// check if the hardware architecture matches ('*' means skip this check)
if (browserRule.Architecture != WILDCARD &&
browserInfo.Architecture != browserRule.Architecture)
{
return(false);
}
// check if the browser name matches ('*' means skip this check)
if (browserRule.Name != WILDCARD &&
browserInfo.Name != browserRule.Name)
{
return(false);
}
// check if browser meets minimum version (0 means skip this check)
if (browserRule.MinVersion > 0 &&
browserInfo.Version < browserRule.MinVersion)
{
return(false);
}
// check if browser meets maximum version (0 means skip this check)
if (browserRule.MaxVersion > 0 &&
browserInfo.Version > browserRule.MaxVersion)
{
return(false);
}
// everything matched
return(true);
}
/// <summary>
/// Find the highest priority browser rule for this user agent.
/// </summary>
/// <returns>Either the rule or NULL if none found.</returns>
public BrowserRule FindRule(BrowserInfo browserInfo)
{
return(FindRules(browserInfo).FirstOrDefault());
}
/// <summary>
/// Find all the matching browser rules for this user agent.
/// </summary>
public IOrderedEnumerable <BrowserRule> FindRules(BrowserInfo browserInfo)
{
return(_rules.Where(r => MatchRule(browserInfo, r)).OrderByDescending(r => r.Priority));
}
/// <summary>
/// Check the action for this user agent string.
/// </summary>
public BrowserAction Check(BrowserInfo browserInfo)
{
BrowserRule browserRule = FindRule(browserInfo);
return((browserRule != null) ? browserRule.Action : BrowserAction.Deny);
}