private static string EscapeValue(string s, EscapeChars escapeChars)
{
var returnValue = new StringBuilder();
for (var i = 0; i < s.Length; i++)
{
if (Rdn.IsSpecialChar(s[i]) || ((i == 0 || i == s.Length - 1) && s[i] == ' '))
{
if ((escapeChars & EscapeChars.SpecialChars) != EscapeChars.None)
{
returnValue.Append('\\');
}
returnValue.Append(s[i]);
}
else if (s[i] < 32 && ((escapeChars & EscapeChars.ControlChars) != EscapeChars.None))
{
returnValue.AppendFormat("\\{0:X2}", (int)s[i]);
}
else if (s[i] >= 128 && ((escapeChars & EscapeChars.MultibyteChars) != EscapeChars.None))
{
var bytes = Encoding.UTF8.GetBytes(new[] { s[i] });
foreach (var b in bytes)
{
returnValue.AppendFormat("\\{0:X2}", b);
}
}
else
{
returnValue.Append(s[i]);
}
}
return(returnValue.ToString());
}
private static List <IRdn> ParseDn(string dnString)
{
if (string.IsNullOrEmpty(dnString))
{
return(new List <IRdn>());
}
var rdns = new List <IRdn>();
var state = ParserState.LookingForSeparator;
var rawRdn = new StringBuilder();
for (var position = 0; position < dnString.Length; ++position)
{
switch (state)
{
case ParserState.LookingForSeparator:
// If we find a separator character, we've hit the end of an Rdn.
// We'll store the Rdn, and we'll check to see if the Rdn is actually
// valid later.
if (dnString[position] == ',' || dnString[position] == ';')
{
var rdn = new Rdn(rawRdn.ToString());
rdns.Add(rdn); // Add the string to the list of raw Rdns
rawRdn.Length = 0; // Clear the StringBuilder to prepare for the next Rdn
}
else
{
// Add the character to our temporary Rdn string
rawRdn.Append(dnString[position]);
// If we find an escape character, store character that follows it,
// but don't consider it as a possible separator character. If the
// string ends with an escape character, that's bad, and we should
// throw an exception
if (dnString[position] == '\\')
{
try {
rawRdn.Append(dnString[++position]);
} catch (IndexOutOfRangeException) {
throw new ArgumentException("Invalid Dn: DNs aren't allowed to end with an escape character.", dnString);
}
}
// If we find a quote, we'll change state so that we look for the closing quote
// and ignore any separator characters within.
else if (dnString[position] == '"')
{
state = ParserState.InQuotedString;
}
}
break;
case ParserState.InQuotedString:
// Store the character
rawRdn.Append(dnString[position]);
// You're allowed to escape special characters in a quoted string, but not required
// to. But if there's an escaped quote, we need to take special care to make sure
// that we don't mistake that for the end of the quoted string.
if (dnString[position] == '\\')
{
try {
rawRdn.Append(dnString[++position]);
} catch (IndexOutOfRangeException) {
throw new ArgumentException("Invalid Dn: DNs aren't allowed to end with an escape character.", dnString);
}
}
else if (dnString[position] == '"')
{
state = ParserState.LookingForSeparator;
}
break;
}
}
// Take the last Rdn and add it to the list
var lastRdn = new Rdn(rawRdn.ToString());
rdns.Add(lastRdn);
// Check parser's end state
if (state == ParserState.InQuotedString)
{
throw new ArgumentException("Invalid Dn: Unterminated quoted string.", dnString);
}
return(rdns);
}
private static List<IRdn> ParseDn(string dnString) {
if(string.IsNullOrEmpty(dnString)) {
return new List<IRdn>();
}
var rdns = new List<IRdn>();
var state = ParserState.LookingForSeparator;
var rawRdn = new StringBuilder();
for(var position = 0; position < dnString.Length; ++position) {
switch(state) {
case ParserState.LookingForSeparator:
// If we find a separator character, we've hit the end of an Rdn.
// We'll store the Rdn, and we'll check to see if the Rdn is actually
// valid later.
if(dnString[position] == ',' || dnString[position] == ';') {
var rdn = new Rdn(rawRdn.ToString());
rdns.Add(rdn); // Add the string to the list of raw Rdns
rawRdn.Length = 0; // Clear the StringBuilder to prepare for the next Rdn
} else {
// Add the character to our temporary Rdn string
rawRdn.Append(dnString[position]);
// If we find an escape character, store character that follows it,
// but don't consider it as a possible separator character. If the
// string ends with an escape character, that's bad, and we should
// throw an exception
if(dnString[position] == '\\') {
try {
rawRdn.Append(dnString[++position]);
} catch(IndexOutOfRangeException) {
throw new ArgumentException("Invalid Dn: DNs aren't allowed to end with an escape character.", dnString);
}
}
// If we find a quote, we'll change state so that we look for the closing quote
// and ignore any separator characters within.
else if(dnString[position] == '"') {
state = ParserState.InQuotedString;
}
}
break;
case ParserState.InQuotedString:
// Store the character
rawRdn.Append(dnString[position]);
// You're allowed to escape special characters in a quoted string, but not required
// to. But if there's an escaped quote, we need to take special care to make sure
// that we don't mistake that for the end of the quoted string.
if(dnString[position] == '\\') {
try {
rawRdn.Append(dnString[++position]);
} catch(IndexOutOfRangeException) {
throw new ArgumentException("Invalid Dn: DNs aren't allowed to end with an escape character.", dnString);
}
} else if(dnString[position] == '"')
state = ParserState.LookingForSeparator;
break;
}
}
// Take the last Rdn and add it to the list
var lastRdn = new Rdn(rawRdn.ToString());
rdns.Add(lastRdn);
// Check parser's end state
if(state == ParserState.InQuotedString)
throw new ArgumentException("Invalid Dn: Unterminated quoted string.", dnString);
return rdns;
}
