// see https://httpd.apache.org/docs/2.4/rewrite/advanced.html#setenvvars
public void AddAction_Throws_ChangeEnvNotSupported()
{
var builder = new RuleBuilder();
var flags = new Flags();
flags.SetFlag(FlagType.Env, "rewritten:1");
var ex = Assert.Throws <NotSupportedException>(() => builder.AddAction(null, flags));
Assert.Equal(Resources.Error_ChangeEnvironmentNotSupported, ex.Message);
}
public void AddAction_DefaultRedirectStatusCode()
{
var builder = new RuleBuilder();
var flags = new Flags();
var pattern = new Pattern(new List <PatternSegment>());
flags.SetFlag(FlagType.Redirect, string.Empty);
builder.AddAction(pattern, flags);
var redirectAction = (RedirectAction)builder._actions[0];
Assert.Equal(StatusCodes.Status302Found, redirectAction.StatusCode);
}
public IList <IRule> Parse(TextReader input)
{
string?line;
var rules = new List <IRule>();
var builder = new RuleBuilder();
var lineNum = 0;
// parsers
var testStringParser = new TestStringParser();
var conditionParser = new ConditionPatternParser();
var regexParser = new RuleRegexParser();
var flagsParser = new FlagParser();
var tokenizer = new Tokenizer();
while ((line = input.ReadLine()) != null)
{
lineNum++;
if (string.IsNullOrEmpty(line))
{
continue;
}
if (line.StartsWith('#'))
{
continue;
}
var tokens = tokenizer.Tokenize(line) !;
if (tokens.Count > 4)
{
// This means the line didn't have an appropriate format, throw format exception
throw new FormatException(Resources.FormatError_ModRewriteParseError("Too many tokens on line", lineNum));
}
switch (tokens[0])
{
case "RewriteBase":
// the notion of the path base spans across all rules, not just mod_rewrite
// So not implemented for now
throw new NotImplementedException("RewriteBase is not implemented");
case "RewriteCond":
try
{
var pattern = testStringParser.Parse(tokens[1]);
var condActionParsed = conditionParser.ParseActionCondition(tokens[2]);
var flags = new Flags();
if (tokens.Count == 4)
{
flags = flagsParser.Parse(tokens[3]);
}
builder.AddConditionFromParts(pattern, condActionParsed, flags);
}
catch (FormatException formatException)
{
throw new FormatException(Resources.FormatError_ModRewriteGeneralParseError(lineNum), formatException);
}
break;
case "RewriteRule":
try
{
var regex = regexParser.ParseRuleRegex(tokens[1]);
var pattern = testStringParser.Parse(tokens[2]);
Flags flags;
if (tokens.Count == 4)
{
flags = flagsParser.Parse(tokens[3]);
}
else
{
flags = new Flags();
}
builder.AddMatch(regex, flags);
builder.AddAction(pattern, flags);
rules.Add(builder.Build());
builder = new RuleBuilder();
}
catch (FormatException formatException)
{
throw new FormatException(Resources.FormatError_ModRewriteGeneralParseError(lineNum), formatException);
}
break;
case "RewriteMap":
// Lack of use
throw new NotImplementedException("RewriteMap are not implemented");
case "RewriteEngine":
// Explicitly do nothing here, no notion of turning on regex engine.
break;
default:
throw new FormatException(Resources.FormatError_ModRewriteParseError("Unrecognized keyword: " + tokens[0], lineNum));
}
}
return(rules);
}
