public static string GetRedirect(HttpContext currentContext, RedirectReason redirectReason)
{
string redirectURL = "";
if (redirectReason > 0)
{
switch (redirectReason)
{
case RedirectReason.PageNotFound:
case RedirectReason.InvalidPermission:
redirectURL += "/Oops/" + redirectReason.ToString();
break;
}
}
return(redirectURL);
}
private static string GetRedirectReasonRewriteToken(RedirectReason reason)
{
string result = string.Empty;
switch (reason)
{
case RedirectReason.Deleted_Page:
result = "&rr=dl";
break;
case RedirectReason.Disabled_Page:
// 838 : handle disabled page separately
result = "&rr=db";
break;
case RedirectReason.Tab_Permanent_Redirect:
result = "&rr=pr";
break;
case RedirectReason.Spaces_Replaced:
result = "&rr=sr";
break;
case RedirectReason.Site_Root_Home:
result = "&rr=hp";
break;
case RedirectReason.Diacritic_Characters:
result = "&rr=dc";
break;
case RedirectReason.User_Profile_Url:
result = "&rr=up";
break;
case RedirectReason.Custom_Redirect:
result = "&rr=cr";
break;
}
return(result);
}
/// <summary>
/// Configures the result object to set the correct Alias redirect
/// parameters and destination URL
/// </summary>
/// <param name="result"></param>
/// <param name="wrongAlias"></param>
/// <param name="rightAlias"></param>
/// <param name="ignoreCustomAliasTabs"></param>
/// <param name="redirectReason"></param>
/// <param name="internalAliases"></param>
/// <param name="settings"></param>
/// <returns></returns>
private static bool ConfigurePortalAliasRedirect(ref UrlAction result,
string wrongAlias,
string rightAlias,
bool ignoreCustomAliasTabs,
RedirectReason redirectReason,
List<InternalAlias> internalAliases,
FriendlyUrlSettings settings)
{
//wrong alias for the portal
//check to see if the wrong portal alias could be a custom alias for a tab
bool doRedirect;
if (ignoreCustomAliasTabs == false) //check out custom alias tabs collection
{
//if an alias is a custom tab alias for a specific tab, then don't redirect
if (CheckIfAliasIsCustomTabAlias(ref result, wrongAlias, settings))
doRedirect = false;
else
{
doRedirect = true;
}
}
else
{
doRedirect = true; //do redirect, ignore custom alias entries for tabs
}
//check to see if it is an internal alias. These are used to block redirects
//to allow for reverse proxy requests, which must change the rewritten alias
//while leaving the requested alias
bool internalAliasFound = false;
if (doRedirect && internalAliases != null && internalAliases.Count > 0)
{
if (internalAliases.Any(ia => String.Compare(ia.HttpAlias, wrongAlias, StringComparison.OrdinalIgnoreCase) == 0))
{
internalAliasFound = true;
doRedirect = false;
}
}
//if still need to do redirect, then set the settings that will cause the redirect (redirect not done here)
if (doRedirect)
{
result.Action = ActionType.Redirect301;
result.Reason = redirectReason;
string destUrl = result.OriginalPath.Replace(wrongAlias, rightAlias);
if (redirectReason == RedirectReason.Wrong_Portal_Alias_For_Culture ||
redirectReason == RedirectReason.Wrong_Portal_Alias_For_Culture_And_Browser)
{
destUrl = destUrl.Replace("/language/" + result.CultureCode, "");
}
destUrl = CheckForSiteRootRedirect(rightAlias, destUrl);
result.FinalUrl = destUrl;
}
else
{
//838 : don't overwrite the reason if already have checkfor301
// and don't do a check on the basis that an internal alias was found
if (result.Action != ActionType.CheckFor301 && internalAliasFound == false)
{
//set status to 'check for redirect'
result.Action = ActionType.CheckFor301;
result.Reason = RedirectReason.Custom_Tab_Alias;
}
}
return doRedirect;
}
internal static string CreateRewritePath(int tabId, string cultureCode, ActionType action, RedirectReason reason)
{
string rewritePath = CreateRewritePath(tabId, cultureCode);
rewritePath = RedirectTokens.AddRedirectReasonToRewritePath(rewritePath, action, reason);
return rewritePath;
}
private static string GetRedirectReasonRewriteToken(RedirectReason reason)
{
string result = "";
switch (reason)
{
case RedirectReason.Deleted_Page:
result = "&rr=dl";
break;
case RedirectReason.Disabled_Page:
//838 : handle disabled page separately
result = "&rr=db";
break;
case RedirectReason.Tab_Permanent_Redirect:
result = "&rr=pr";
break;
case RedirectReason.Spaces_Replaced:
result = "&rr=sr";
break;
case RedirectReason.Site_Root_Home:
result = "&rr=hp";
break;
case RedirectReason.Diacritic_Characters:
result = "&rr=dc";
break;
case RedirectReason.User_Profile_Url:
result = "&rr=up";
break;
case RedirectReason.Custom_Redirect:
result = "&rr=cr";
break;
}
return result;
}
/// <summary>
/// DetermineRedirectReasonAndAction extracts the redirect value from the rewrite url and
/// returns the new rewritten url, and the reason for the redirection, and an action value for the type of redirect
/// </summary>
/// <param name="rewrittenUrl">Rewritten url as found in page dictionary</param>
/// <param name="result">The current rewrite result.</param>
/// <param name="wasParms">true if there are parameters in the path, false if not</param>
/// <param name="settings">current FriendlyUrlSettings object</param>
/// <param name="action">New action value for UrlAction object</param>
/// <param name="reason">New redirect reason value for UrlAction object</param>
/// <param name="newUrl">Url to used for rewrite process</param>
/// <returns>the new Url, with any replacements done. Replacements occur when a reason token
/// was stored in the tab dictionary entry just to indicate a redirect reason.</returns>
internal static void DetermineRedirectReasonAndAction(string rewrittenUrl,
UrlAction result,
bool wasParms,
FriendlyUrlSettings settings,
out string newUrl,
out RedirectReason reason,
out ActionType action)
{
//init parms
newUrl = rewrittenUrl;
action = result.Action;
reason = result.Reason;
//get the action type from the rewrite path
ActionType foundAction;
bool actionInPath = GetActionFromRewritePath(rewrittenUrl, out foundAction);
//only overrwrite action if it was found in the rewrite path
if (actionInPath)
{
action = foundAction;
}
//get the list of redirect reason tokens from the url
List<string> redirectReasons = GetRedirectReasonTokensFromRewritePath(rewrittenUrl);
//when redirect action in path, and redirect reasons are empty, add custom redirect
if (redirectReasons.Count == 0 && action != ActionType.Continue)
{
redirectReasons.Add("cr");
}
bool clearActionToken = false;
foreach (string rrTkn in redirectReasons)
{
switch (rrTkn)
{
case "up":
//user profile redirect
clearActionToken = true;
if (wasParms)
{
if (reason == RedirectReason.Not_Redirected)
{
if (settings.RedirectOldProfileUrl)
{
reason = RedirectReason.User_Profile_Url;
action = ActionType.CheckFor301;
}
else
{
action = ActionType.Continue;
}
}
}
else
{
//if no parms, then we're not doing a userprofileaction redirect
reason = RedirectReason.Custom_Redirect;
//then check for a 301 redirect
action = ActionType.CheckFor301;
}
break;
case "dl":
case "db":
//deleted tab dl
//disabled tab db
clearActionToken = true;
//626 Deleted tab hanlding not working properyly - override
if (settings.DeletedTabHandlingType == DeletedTabHandlingType.Do404Error)
{
action = ActionType.Output404; //output a 404 as per settings
}
//838 : handle disabled pages separately
reason = rrTkn == "dl" ? RedirectReason.Deleted_Page : RedirectReason.Disabled_Page;
break;
case "pr":
//pr = permanent redirect
reason = RedirectReason.Tab_Permanent_Redirect;
clearActionToken = true;
break;
case "sr":
//sr = spaces replaced in url
clearActionToken = true;
reason = RedirectReason.Spaces_Replaced;
break;
case "hp":
//hp = home page redirect
if (wasParms)
{
//cancel the home page replaced if there were parameters added and page extensions
//are in use - otherwise a 404 will occur for the relative path
reason = RedirectReason.Not_Redirected;
action = ActionType.Continue;
clearActionToken = true;
}
else
{
reason = RedirectReason.Site_Root_Home;
clearActionToken = true;
}
break;
default:
//any other redirect with no reason is a custom redirect
if (reason == RedirectReason.Not_Redirected)
{
reason = RedirectReason.Custom_Redirect;
}
clearActionToken = true;
break;
}
}
if (clearActionToken)
{
//clear both action and reason
newUrl = RemoveAnyRedirectTokensAndReasons(newUrl);
}
else
{
//clear just reason
newUrl = RemoveAnyRedirectReasons(newUrl);
}
}
/// <summary>
/// Adds on a redirect reason to the rewrite path
/// </summary>
/// <param name="existingRewritePath"></param>
/// <param name="action"></param>
/// <param name="reason"></param>
/// <returns></returns>
internal static string AddRedirectReasonToRewritePath(string existingRewritePath, ActionType action, RedirectReason reason)
{
string result = existingRewritePath;
string token, value;
GetRedirectActionTokenAndValue(action, out token, out value);
string tokenAndValue = token + "=" + value;
bool addToken = true;
//look for existing action
bool hasDupes;
Dictionary<string, string> tokensAndValues = GetRedirectTokensAndValuesFromRewritePath(existingRewritePath,
out hasDupes);
//can't overwrite existing tokens in certain cases
if (tokensAndValues.Count > 0)
{
//only case we allow is an ovewrite of a do301=check by a do301=true or do302=true
if (token == "do301" || token == "do302")
{
if (tokensAndValues.ContainsKey("do301") && tokensAndValues["do301"] == "check")
{
result = existingRewritePath.Replace("do301=check", tokenAndValue);
}
}
addToken = false; //already done
}
if (addToken)
{
if (result.Contains(tokenAndValue) == false)
{
if (result.Contains("?"))
{
result += "&" + tokenAndValue;
}
else
{
result += "?" + tokenAndValue;
}
//the reasonToken helps the rewrite process determine why a redirect is required
//after the token is stored in the page dictionary
string reasonToken = GetRedirectReasonRewriteToken(reason);
if (reasonToken != "")
{
result += reasonToken;
}
}
else
{
//special case : add the number of times a 301 has been requested
if (tokenAndValue == "do301=true" && reason == RedirectReason.User_Profile_Url)
{
result += "&num301=2";
}
}
}
return result;
}
/// <summary>
/// Adds on a redirect reason to the rewrite path.
/// </summary>
/// <param name="existingRewritePath"></param>
/// <param name="action"></param>
/// <param name="reason"></param>
/// <returns></returns>
internal static string AddRedirectReasonToRewritePath(string existingRewritePath, ActionType action, RedirectReason reason)
{
string result = existingRewritePath;
string token, value;
GetRedirectActionTokenAndValue(action, out token, out value);
string tokenAndValue = token + "=" + value;
bool addToken = true;
// look for existing action
bool hasDupes;
Dictionary <string, string> tokensAndValues = GetRedirectTokensAndValuesFromRewritePath(
existingRewritePath,
out hasDupes);
// can't overwrite existing tokens in certain cases
if (tokensAndValues.Count > 0)
{
// only case we allow is an ovewrite of a do301=check by a do301=true or do302=true
if (token == "do301" || token == "do302")
{
if (tokensAndValues.ContainsKey("do301") && tokensAndValues["do301"] == "check")
{
result = existingRewritePath.Replace("do301=check", tokenAndValue);
}
}
addToken = false; // already done
}
if (addToken)
{
if (result.Contains(tokenAndValue) == false)
{
if (result.Contains("?"))
{
result += "&" + tokenAndValue;
}
else
{
result += "?" + tokenAndValue;
}
// the reasonToken helps the rewrite process determine why a redirect is required
// after the token is stored in the page dictionary
string reasonToken = GetRedirectReasonRewriteToken(reason);
if (reasonToken != string.Empty)
{
result += reasonToken;
}
}
else
{
// special case : add the number of times a 301 has been requested
if (tokenAndValue == "do301=true" && reason == RedirectReason.User_Profile_Url)
{
result += "&num301=2";
}
}
}
return(result);
}
/// <summary>
/// DetermineRedirectReasonAndAction extracts the redirect value from the rewrite url and
/// returns the new rewritten url, and the reason for the redirection, and an action value for the type of redirect.
/// </summary>
/// <param name="rewrittenUrl">Rewritten url as found in page dictionary.</param>
/// <param name="result">The current rewrite result.</param>
/// <param name="wasParms">true if there are parameters in the path, false if not.</param>
/// <param name="settings">current FriendlyUrlSettings object.</param>
/// <param name="action">New action value for UrlAction object.</param>
/// <param name="reason">New redirect reason value for UrlAction object.</param>
/// <param name="newUrl">Url to used for rewrite process.</param>
internal static void DetermineRedirectReasonAndAction(
string rewrittenUrl,
UrlAction result,
bool wasParms,
FriendlyUrlSettings settings,
out string newUrl,
out RedirectReason reason,
out ActionType action)
{
// init parms
newUrl = rewrittenUrl;
action = result.Action;
reason = result.Reason;
// get the action type from the rewrite path
ActionType foundAction;
bool actionInPath = GetActionFromRewritePath(rewrittenUrl, out foundAction);
// only overrwrite action if it was found in the rewrite path
if (actionInPath)
{
action = foundAction;
}
// get the list of redirect reason tokens from the url
List <string> redirectReasons = GetRedirectReasonTokensFromRewritePath(rewrittenUrl);
// when redirect action in path, and redirect reasons are empty, add custom redirect
if (redirectReasons.Count == 0 && action != ActionType.Continue)
{
redirectReasons.Add("cr");
}
bool clearActionToken = false;
foreach (string rrTkn in redirectReasons)
{
switch (rrTkn)
{
case "up":
// user profile redirect
clearActionToken = true;
if (wasParms)
{
if (reason == RedirectReason.Not_Redirected)
{
if (settings.RedirectOldProfileUrl)
{
reason = RedirectReason.User_Profile_Url;
action = ActionType.CheckFor301;
}
else
{
action = ActionType.Continue;
}
}
}
else
{
// if no parms, then we're not doing a userprofileaction redirect
reason = RedirectReason.Custom_Redirect;
// then check for a 301 redirect
action = ActionType.CheckFor301;
}
break;
case "dl":
case "db":
// deleted tab dl
// disabled tab db
clearActionToken = true;
// 626 Deleted tab hanlding not working properyly - override
if (settings.DeletedTabHandlingType == DeletedTabHandlingType.Do404Error)
{
action = ActionType.Output404; // output a 404 as per settings
}
// 838 : handle disabled pages separately
reason = rrTkn == "dl" ? RedirectReason.Deleted_Page : RedirectReason.Disabled_Page;
break;
case "pr":
// pr = permanent redirect
reason = RedirectReason.Tab_Permanent_Redirect;
clearActionToken = true;
break;
case "sr":
// sr = spaces replaced in url
clearActionToken = true;
reason = RedirectReason.Spaces_Replaced;
break;
case "hp":
// hp = home page redirect
if (wasParms)
{
// cancel the home page replaced if there were parameters added and page extensions
// are in use - otherwise a 404 will occur for the relative path
reason = RedirectReason.Not_Redirected;
action = ActionType.Continue;
clearActionToken = true;
}
else
{
reason = RedirectReason.Site_Root_Home;
clearActionToken = true;
}
break;
default:
// any other redirect with no reason is a custom redirect
if (reason == RedirectReason.Not_Redirected)
{
reason = RedirectReason.Custom_Redirect;
}
clearActionToken = true;
break;
}
}
if (clearActionToken)
{
// clear both action and reason
newUrl = RemoveAnyRedirectTokensAndReasons(newUrl);
}
else
{
// clear just reason
newUrl = RemoveAnyRedirectReasons(newUrl);
}
}
public static void Redirect(HttpContext currentContext, RedirectReason redirectReason)
{
currentContext.Response.Redirect(Utility.GetRedirect(currentContext, redirectReason));
}
