/// <summary>
/// Remove all rewrite rules that start with the given prefix.
/// </summary>
/// <param name="prefix"></param>
/// <param name="logger"></param>
public void RemoveRewriteRulesWithPrefix(string prefix, ILoggerInterface logger)
{
// If there is no CDN site, do nothing
using (ServerManager manager = new ServerManager())
{
var site = UtilsIis.FindSiteWithName(manager, this.CstChefCndSiteName, logger).SingleOrDefault();
if (site == null)
{
return;
}
}
var webconfigfilepath = this.GetCdnWebConfigPathInitialized();
XDocument webcfg = XDocument.Parse(File.ReadAllText(webconfigfilepath));
var rules = (from p in webcfg.Descendants("rule")
where p.Attribute("name")?.Value?.StartsWith(prefix) == true
select p).ToList();
foreach (var rule in rules)
{
rule?.Remove();
}
UtilsIis.WriteWebConfig(webconfigfilepath, webcfg.ToString());
}
/// <summary>
///
/// </summary>
/// <param name="rule">The rule</param>
/// <param name="replaceIfExists">If a rule exists with the same name, replace it, otherwise, throw exception.</param>
public void AddRewriteRule(string rule, bool replaceIfExists = true)
{
var parsedRule = XElement.Parse(rule);
string name = parsedRule.DescendantsAndSelf("rule").First().Attribute("name").Value;
var webconfigfilepath = this.GetCdnWebConfigPathInitialized();
XDocument webcfg = XDocument.Parse(File.ReadAllText(webconfigfilepath));
XElement ruleselement = webcfg.Root.GetAndEnsureXpath("system.webServer/rewrite/rules");
var existingRule = (from p in ruleselement.Descendants("rule")
where p.Attribute("name")?.Value == name
select p).FirstOrDefault();
if (existingRule != null && !replaceIfExists)
{
throw new Exception("Rule already exists");
}
existingRule?.Remove();
// Now add from scratchrule
ruleselement.Add(parsedRule);
// Perist it
UtilsIis.WriteWebConfig(webconfigfilepath, webcfg.ToString());
}
/// <summary>
/// Move a rule to the requested INDEX in the set of rules
/// </summary>
/// <param name="ruleName"></param>
/// <param name="index"></param>
protected void SetRuleIndex(string ruleName, int index)
{
var webconfigfilepath = this.GetCdnWebConfigPathInitialized();
XDocument webcfg = XDocument.Parse(File.ReadAllText(webconfigfilepath));
XElement ruleselement = webcfg.Root.GetAndEnsureXpath("system.webServer/rewrite/rules");
XElement existingRule = null;
var nodes = ruleselement.Nodes().ToList();
foreach (var node in nodes.ToList())
{
if (node is XElement xNode && xNode.Attribute("name")?.Value == ruleName)
{
if (nodes.IndexOf(xNode) == index)
{
return;
}
existingRule = xNode;
nodes.Remove(xNode);
break;
}
}
if (existingRule == null)
{
throw new Exception($"Rule {ruleName} not found.");
}
nodes.Insert(index, existingRule);
ruleselement.ReplaceAll(nodes.ToArray());
UtilsIis.WriteWebConfig(webconfigfilepath, webcfg.ToString());
}