public override string Evaluate(RewriteContext context, BackReferenceCollection ruleBackReferences, BackReferenceCollection conditionBackReferences)
{
if (context.HttpContext.Connection.RemoteIpAddress == null)
{
return("off");
}
return(context.HttpContext.Connection.RemoteIpAddress.AddressFamily == AddressFamily.InterNetworkV6 ? "on" : "off");
}
public override string Evaluate(RewriteContext context, BackReferenceCollection ruleBackRefernces, BackReferenceCollection conditionBackReferences)
{
var queryString = context.HttpContext.Request.QueryString.ToString();
if (!string.IsNullOrEmpty(queryString))
{
return(queryString.Substring(1));
}
return(queryString);
}
public override void ApplyAction(RewriteContext context, BackReferenceCollection ruleBackReferences, BackReferenceCollection conditionBackReferences)
{
var pattern = Url.Evaluate(context, ruleBackReferences, conditionBackReferences);
var response = context.HttpContext.Response;
var pathBase = context.HttpContext.Request.PathBase;
if (EscapeBackReferences)
{
// because escapebackreferences will be encapsulated by the pattern, just escape the pattern
pattern = Uri.EscapeDataString(pattern);
}
if (string.IsNullOrEmpty(pattern))
{
response.Headers[HeaderNames.Location] = pathBase.HasValue ? pathBase.Value : "/";
return;
}
if (pattern.IndexOf("://", StringComparison.Ordinal) == -1 && pattern[0] != '/')
{
pattern = '/' + pattern;
}
response.StatusCode = StatusCode;
// url can either contain the full url or the path and query
// always add to location header.
// TODO check for false positives
var split = pattern.IndexOf('?');
if (split >= 0 && QueryStringAppend)
{
var query = context.HttpContext.Request.QueryString.Add(
QueryString.FromUriComponent(
pattern.Substring(split)));
// not using the response.redirect here because status codes may be 301, 302, 307, 308
response.Headers[HeaderNames.Location] = pathBase + pattern.Substring(0, split) + query;
}
else
{
// If the request url has a query string and the target does not, append the query string
// by default.
if (QueryStringDelete)
{
response.Headers[HeaderNames.Location] = pathBase + pattern;
}
else
{
response.Headers[HeaderNames.Location] = pathBase + pattern + context.HttpContext.Request.QueryString;
}
}
context.Result = RuleResult.EndResponse;
}
public override string Evaluate(RewriteContext context, BackReferenceCollection ruleBackReferences, BackReferenceCollection conditionBackReferences)
{
// PERF as we share the string builder across the context, we need to make a new one here to evaluate
// lowercase segments.
var tempBuilder = context.Builder;
context.Builder = new StringBuilder(64);
var pattern = _pattern.Evaluate(context, ruleBackReferences, conditionBackReferences);
context.Builder = tempBuilder;
return(pattern.ToLowerInvariant());
}
public override string Evaluate(RewriteContext context, BackReferenceCollection ruleBackReferences, BackReferenceCollection conditionBackReferences)
{
var oldBuilder = context.Builder;
// PERF
// Because we need to be able to evaluate multiple nested patterns,
// we provided a new string builder and evaluate the new pattern,
// and restore it after evaluation.
context.Builder = new StringBuilder(64);
var pattern = _pattern.Evaluate(context, ruleBackReferences, conditionBackReferences);
context.Builder = oldBuilder;
return(UrlEncoder.Default.Encode(pattern));
}
public static MatchResults Evaluate(ConditionCollection conditions, RewriteContext context, BackReferenceCollection backReferences)
{
BackReferenceCollection prevBackReferences = null;
MatchResults condResult = null;
var orSucceeded = false;
foreach (var condition in conditions)
{
if (orSucceeded && conditions.Grouping == LogicalGrouping.MatchAny)
{
continue;
}
if (orSucceeded)
{
orSucceeded = false;
continue;
}
condResult = condition.Evaluate(context, backReferences, prevBackReferences);
var currentBackReferences = condResult.BackReferences;
if (conditions.Grouping == LogicalGrouping.MatchAny)
{
orSucceeded = condResult.Success;
}
else if (!condResult.Success)
{
return(condResult);
}
if (condResult.Success && conditions.TrackAllCaptures && prevBackReferences != null)
{
prevBackReferences.Add(currentBackReferences);
currentBackReferences = prevBackReferences;
}
prevBackReferences = currentBackReferences;
}
return(new MatchResults {
BackReferences = prevBackReferences, Success = condResult.Success
});
}
public override void ApplyAction(RewriteContext context, BackReferenceCollection ruleBackReferences, BackReferenceCollection conditionBackReferences)
{
var response = context.HttpContext.Response;
response.StatusCode = StatusCode;
if (!string.IsNullOrEmpty(StatusReason))
{
context.HttpContext.Features.Get <IHttpResponseFeature>().ReasonPhrase = StatusReason;
}
if (!string.IsNullOrEmpty(StatusDescription))
{
var content = Encoding.UTF8.GetBytes(StatusDescription);
response.ContentLength = content.Length;
response.ContentType = "text/plain; charset=utf-8";
response.Body.Write(content, 0, content.Length);
}
context.Result = RuleResult.EndResponse;
context.Logger?.CustomResponse(context.HttpContext.Request.GetEncodedUrl());
}
public abstract string Evaluate(RewriteContext context, BackReferenceCollection ruleBackReferences, BackReferenceCollection conditionBackReferences);
public MatchResults Evaluate(RewriteContext context, BackReferenceCollection ruleBackReferences, BackReferenceCollection conditionBackReferences)
{
var pattern = Input.Evaluate(context, ruleBackReferences, conditionBackReferences);
return(Match.Evaluate(pattern, context));
}
public override string Evaluate(RewriteContext context, BackReferenceCollection ruleBackReferences, BackReferenceCollection conditionBackReferences)
{
var key = _pattern.Evaluate(context, ruleBackReferences, conditionBackReferences).ToLowerInvariant();
return(_rewriteMap[key]);
}
public static MatchResults Evaluate(IEnumerable <Condition> conditions, RewriteContext context, BackReferenceCollection backReferences)
{
return(Evaluate(conditions, context, backReferences, trackAllCaptures: false));
}
public override string Evaluate(RewriteContext context, BackReferenceCollection ruleBackReferences, BackReferenceCollection conditionBackReferences)
{
return(context.HttpContext.Connection.RemotePort.ToString(CultureInfo.InvariantCulture));
}
public override void ApplyAction(RewriteContext context, BackReferenceCollection ruleBackReferences, BackReferenceCollection conditionBackReferences)
{
context.HttpContext.Abort();
context.Result = RuleResult.EndResponse;
context.Logger?.AbortedRequest(context.HttpContext.Request.Path + context.HttpContext.Request.QueryString);
}
public override string Evaluate(RewriteContext context, BackReferenceCollection ruleBackReferences, BackReferenceCollection conditionBackReferences)
{
return(_uriMatchPart == UriMatchPart.Full ? context.HttpContext.Request.GetEncodedUrl() : (string)context.HttpContext.Request.Path);
}
// Explicitly say that nothing happens
public override void ApplyAction(RewriteContext context, BackReferenceCollection ruleBackReferences, BackReferenceCollection conditionBackReferences)
{
context.Result = Result;
}
public override string Evaluate(RewriteContext context, BackReferenceCollection ruleBackReferences, BackReferenceCollection conditionBackReferences)
{
return(context.HttpContext.Request.Method);
}
public override void ApplyAction(RewriteContext context, BackReferenceCollection ruleBackReferences, BackReferenceCollection conditionBackReferences)
{
context.HttpContext.Response.StatusCode = StatusCodes.Status410Gone;
context.Result = RuleResult.EndResponse;
}
public override void ApplyAction(RewriteContext context, BackReferenceCollection ruleBackReferences, BackReferenceCollection conditionBackReferences)
{
var pattern = Url.Evaluate(context, ruleBackReferences, conditionBackReferences);
var request = context.HttpContext.Request;
if (string.IsNullOrEmpty(pattern))
{
pattern = "/";
}
if (EscapeBackReferences)
{
// because escapebackreferences will be encapsulated by the pattern, just escape the pattern
pattern = Uri.EscapeDataString(pattern);
}
// TODO PERF, substrings, object creation, etc.
if (pattern.IndexOf(Uri.SchemeDelimiter, StringComparison.Ordinal) >= 0)
{
string scheme;
HostString host;
PathString path;
QueryString query;
FragmentString fragment;
UriHelper.FromAbsolute(pattern, out scheme, out host, out path, out query, out fragment);
if (query.HasValue)
{
if (QueryStringAppend)
{
request.QueryString = request.QueryString.Add(query);
}
else
{
request.QueryString = query;
}
}
else if (QueryStringDelete)
{
request.QueryString = QueryString.Empty;
}
request.Scheme = scheme;
request.Host = host;
request.Path = path;
}
else
{
var split = pattern.IndexOf('?');
if (split >= 0)
{
var path = pattern.Substring(0, split);
if (path[0] == '/')
{
request.Path = PathString.FromUriComponent(path);
}
else
{
request.Path = PathString.FromUriComponent('/' + path);
}
if (QueryStringAppend)
{
request.QueryString = request.QueryString.Add(
QueryString.FromUriComponent(
pattern.Substring(split)));
}
else
{
request.QueryString = QueryString.FromUriComponent(
pattern.Substring(split));
}
}
else
{
if (pattern[0] == '/')
{
request.Path = PathString.FromUriComponent(pattern);
}
else
{
request.Path = PathString.FromUriComponent('/' + pattern);
}
if (QueryStringDelete)
{
request.QueryString = QueryString.Empty;
}
}
}
context.Result = Result;
}
public override string Evaluate(RewriteContext context, BackReferenceCollection ruleBackReferences, BackReferenceCollection conditionBackReference)
{
switch (_portion)
{
case DateTimePortion.Year:
return(DateTimeOffset.UtcNow.Year.ToString(CultureInfo.InvariantCulture));
case DateTimePortion.Month:
return(DateTimeOffset.UtcNow.Month.ToString(CultureInfo.InvariantCulture));
case DateTimePortion.Day:
return(DateTimeOffset.UtcNow.Day.ToString(CultureInfo.InvariantCulture));
case DateTimePortion.Hour:
return(DateTimeOffset.UtcNow.Hour.ToString(CultureInfo.InvariantCulture));
case DateTimePortion.Minute:
return(DateTimeOffset.UtcNow.Minute.ToString(CultureInfo.InvariantCulture));
case DateTimePortion.Second:
return(DateTimeOffset.UtcNow.Second.ToString(CultureInfo.InvariantCulture));
case DateTimePortion.DayOfWeek:
return(((int)DateTimeOffset.UtcNow.DayOfWeek).ToString(CultureInfo.InvariantCulture));
case DateTimePortion.Time:
return(DateTimeOffset.UtcNow.ToString(CultureInfo.InvariantCulture));
default:
return(string.Empty);
}
}
public override string Evaluate(RewriteContext context, BackReferenceCollection ruleBackReferences, BackReferenceCollection conditionBackReferences)
{
return(context.HttpContext.Connection.LocalIpAddress?.ToString());
}
public override string Evaluate(RewriteContext context, BackReferenceCollection ruleBackReferences, BackReferenceCollection conditionBackReferences)
{
return(ruleBackReferences[_index]);
}
public override string Evaluate(RewriteContext context, BackReferenceCollection ruleBackReferences, BackReferenceCollection conditionBackReferences)
{
return(context.HttpContext.Features.Get <IHttpRequestFeature>()?.Protocol);
}
public override void ApplyAction(RewriteContext context, BackReferenceCollection ruleBackReferences, BackReferenceCollection conditionBackReferences)
{
var options = GetOrCreateOptions();
context.HttpContext.Response.Cookies.Append(Name, Value ?? string.Empty, options);
}
public abstract void ApplyAction(RewriteContext context, BackReferenceCollection ruleBackReferences, BackReferenceCollection conditionBackReferences);
public override string Evaluate(RewriteContext context, BackReferenceCollection ruleBackReferences, BackReferenceCollection conditionBackReferences)
{
return(context.HttpContext.GetServerVariable(_variableName) ?? _fallbackThunk().Evaluate(context, ruleBackReferences, conditionBackReferences));
}
