public static string Match(this IRegex c, string pattern, string groupName)
{
return(c.Match(pattern, groupName, RegexOptions.None));
}
public static string Match(this IRegex c, string pattern, int index)
{
return(c.Match(pattern, index, RegexOptions.None));
}
public static string Match(this IRegex c, string pattern)
{
return(c.Match(pattern, 0));
}
public static MatchedTextRange?SearchInText(
this SearchState state,
StringSlice text,
int?startTextPosition)
{
IRegex re = state.re;
// matched string position
int matchBegin = 0; // index of the first matched char
int matchEnd = 0; // index of following after the last matched one
bool wholeTextMatched = false;
if (!string.IsNullOrEmpty(state.options.Template)) // empty/null template means that text matching isn't required, i.e. match any input
{
int textPos;
if (startTextPosition.HasValue)
{
textPos = startTextPosition.Value;
}
else if (state.options.ReverseSearch)
{
textPos = text.Length;
}
else
{
textPos = 0;
}
for (; ;)
{
if (re != null)
{
if (!re.Match(text, textPos, ref state.searchMatch))
{
return(null);
}
matchBegin = state.searchMatch.Index;
matchEnd = matchBegin + state.searchMatch.Length;
}
else
{
StringComparison cmp = state.options.MatchCase ? StringComparison.CurrentCulture : StringComparison.CurrentCultureIgnoreCase;
int i;
// todo: use running hash
if (state.options.ReverseSearch)
{
i = text.LastIndexOf(state.options.Template, textPos, cmp);
}
else
{
i = text.IndexOf(state.options.Template, textPos, cmp);
}
if (i < 0)
{
return(null);
}
matchBegin = i;
matchEnd = matchBegin + state.options.Template.Length;
}
if (state.options.WholeWord && !IsWordBoundary(text, matchBegin, matchEnd))
{
textPos = state.options.ReverseSearch ? matchBegin : matchEnd;
continue;
}
break;
}
}
else
{
matchBegin = 0;
matchEnd = text.Length;
wholeTextMatched = true;
}
return(new MatchedTextRange(text, matchBegin, matchEnd, wholeTextMatched));
}
public static string ParseExpression(IRegex regexEngine, string matchedPattern, string expression)
{
FlexMatch match = regexEngine.Match(matchedPattern, expression);
return(match?.Success ?? false?ParseValue(match.Value) : null);
}
protected override string IsValidDynamicHelper(ref string fingerprintText,
ref string message)
{
var fingerprint = new Fingerprint(fingerprintText);
string id = fingerprint.Id;
string key = fingerprint.Key;
try
{
var iamClient = new AmazonIdentityManagementServiceClient(id, key);
GetAccountAuthorizationDetailsRequest request;
GetAccountAuthorizationDetailsResponse response;
request = new GetAccountAuthorizationDetailsRequest();
response = iamClient.GetAccountAuthorizationDetailsAsync(request).GetAwaiter().GetResult();
message = BuildAuthorizedMessage(id, response);
}
catch (AmazonIdentityManagementServiceException e)
{
switch (e.ErrorCode)
{
case "AccessDenied":
{
FlexMatch match = RegexEngine.Match(e.Message, AwsUserExpression);
// May return a message containing user id details such as:
// User: arn:aws:iam::123456123456:user/example.com@@dead1234dead1234dead1234 is not
// authorized to perform: iam:GetAccountAuthorizationDetails on resource: *
if (match.Success)
{
int trimmedChars = "User: "******"is not authorized ".Length;
string iamUser = match.Value.String.Substring("User: "******"the compromised AWS identity is '{iamUser}";
}
return(nameof(ValidationState.Authorized));
}
case "InvalidClientTokenId":
case "SignatureDoesNotMatch":
{
return(nameof(ValidationState.NoMatch));
}
}
message = $"An unexpected exception was caught attempting to authenticate AWS id '{id}': {e.Message}";
return(nameof(ValidationState.Unknown));
}
catch (Exception e)
{
message = $"An unexpected exception was caught attempting to authentic AWS id '{id}': {e.Message}";
return(nameof(ValidationState.Unknown));
}
/* var client = new HttpClient();
*
* try
* {
* string uri = "https://iam.amazonaws.com/?Action=GetAccountAuthorizationDetails" +
* "?X-Amz-Algorithm=AWS4-HMAC-SHA256" +
* $"&X-Amz-Credential={id}";
*
* HttpResponseMessage response = client.GetAsync(uri).GetAwaiter().GetResult();
*
* switch (response.StatusCode)
* {
* case HttpStatusCode.Forbidden:
* {
* message = $"for AWS credential id '{id}'.";
* return nameof(ValidationState.Unauthorized);
* }
* }
* }
* catch (Exception e)
* {
* message = $"An unexpected exception was caught attempting to authentic AWS id '{id}': {e.Message}";
* return nameof(ValidationState.Unknown);
* }
*/
return(nameof(ValidationState.Authorized));
}
