internal void EncodeHeaders(HeaderCollection headers)
{
if (this.headersEncoding == null)
{
this.headersEncoding = Encoding.GetEncoding("utf-8");
}
for (int i = 0; i < headers.Count; i++)
{
string key = headers.GetKey(i);
if (MailHeaderInfo.IsUserSettable(key))
{
string[] values = headers.GetValues(key);
string str2 = string.Empty;
for (int j = 0; j < values.Length; j++)
{
if (MimeBasePart.IsAscii(values[j], false))
{
str2 = values[j];
}
else
{
str2 = MimeBasePart.EncodeHeaderValue(values[j], this.headersEncoding, MimeBasePart.ShouldUseBase64Encoding(this.headersEncoding), key.Length);
}
if (j == 0)
{
headers.Set(key, str2);
}
else
{
headers.Add(key, str2);
}
}
}
}
}
internal void SetContentFromString(string contentString, System.Net.Mime.ContentType contentType)
{
Encoding aSCII;
if (contentString == null)
{
throw new ArgumentNullException("content");
}
if (this.part.Stream != null)
{
this.part.Stream.Close();
}
if ((contentType != null) && (contentType.CharSet != null))
{
aSCII = Encoding.GetEncoding(contentType.CharSet);
}
else if (MimeBasePart.IsAscii(contentString, false))
{
aSCII = Encoding.ASCII;
}
else
{
aSCII = Encoding.GetEncoding("utf-8");
}
byte[] bytes = aSCII.GetBytes(contentString);
this.part.SetContent(new MemoryStream(bytes), contentType);
if (MimeBasePart.ShouldUseBase64Encoding(aSCII))
{
this.part.TransferEncoding = System.Net.Mime.TransferEncoding.Base64;
}
else
{
this.part.TransferEncoding = System.Net.Mime.TransferEncoding.QuotedPrintable;
}
}
internal void SetContentFromString(string content, Encoding?encoding, string?mediaType)
{
ArgumentNullException.ThrowIfNull(content);
_part.Stream?.Close();
if (string.IsNullOrEmpty(mediaType))
{
mediaType = MediaTypeNames.Text.Plain;
}
//validate the mediaType
int offset = 0;
try
{
string value = MailBnfHelper.ReadToken(mediaType, ref offset, null);
if (value.Length == 0 || offset >= mediaType.Length || mediaType[offset++] != '/')
{
throw new ArgumentException(SR.MediaTypeInvalid, nameof(mediaType));
}
value = MailBnfHelper.ReadToken(mediaType, ref offset, null);
if (value.Length == 0 || offset < mediaType.Length)
{
throw new ArgumentException(SR.MediaTypeInvalid, nameof(mediaType));
}
}
catch (FormatException)
{
throw new ArgumentException(SR.MediaTypeInvalid, nameof(mediaType));
}
ContentType contentType = new ContentType(mediaType);
if (encoding == null)
{
if (MimeBasePart.IsAscii(content, false))
{
encoding = Encoding.ASCII;
}
else
{
encoding = Encoding.GetEncoding(MimeBasePart.DefaultCharSet);
}
}
contentType.CharSet = encoding.BodyName;
byte[] buffer = encoding.GetBytes(content);
_part.SetContent(new MemoryStream(buffer), contentType);
if (MimeBasePart.ShouldUseBase64Encoding(encoding))
{
_part.TransferEncoding = TransferEncoding.Base64;
}
else
{
_part.TransferEncoding = TransferEncoding.QuotedPrintable;
}
}
internal void SetContentFromString(string content, ContentType?contentType)
{
ArgumentNullException.ThrowIfNull(content);
_part.Stream?.Close();
Encoding encoding;
if (contentType != null && contentType.CharSet != null)
{
encoding = Text.Encoding.GetEncoding(contentType.CharSet);
}
else
{
if (MimeBasePart.IsAscii(content, false))
{
encoding = Text.Encoding.ASCII;
}
else
{
encoding = Text.Encoding.GetEncoding(MimeBasePart.DefaultCharSet);
}
}
byte[] buffer = encoding.GetBytes(content);
_part.SetContent(new MemoryStream(buffer), contentType);
if (MimeBasePart.ShouldUseBase64Encoding(encoding))
{
_part.TransferEncoding = TransferEncoding.Base64;
}
else
{
_part.TransferEncoding = TransferEncoding.QuotedPrintable;
}
}
internal string Encode(int charsConsumed)
{
string encodedString = string.Empty;
if (!string.IsNullOrEmpty(this.displayName))
{
if (MimeBasePart.IsAscii(this.displayName, false))
{
encodedString = string.Format("\"{0}\"", this.displayName);
}
else
{
IEncodableStream stream = encoderFactory.GetEncoderForHeader(this.displayNameEncoding, false, charsConsumed);
byte[] bytes = this.displayNameEncoding.GetBytes(this.displayName);
stream.EncodeBytes(bytes, 0, bytes.Length);
encodedString = stream.GetEncodedString();
}
encodedString = encodedString + "\r\n ";
}
if (!string.IsNullOrEmpty(encodedString))
{
return(encodedString + this.SmtpAddress);
}
return(this.Address);
}
private string GetUser(bool allowUnicode)
{
// Unicode usernames cannot be downgraded
if (!allowUnicode && !MimeBasePart.IsAscii(userName, true))
{
throw new SmtpException(SR.GetString(SR.SmtpNonAsciiUserNotSupported, Address));
}
return(userName);
}
internal void EncodeHeaders(HeaderCollection headers, bool allowUnicode)
{
if (_headersEncoding == null)
{
_headersEncoding = Encoding.GetEncoding(MimeBasePart.DefaultCharSet);
}
System.Diagnostics.Debug.Assert(_headersEncoding != null);
for (int i = 0; i < headers.Count; i++)
{
string headerName = headers.GetKey(i);
//certain well-known values are encoded by PrepareHeaders and PrepareEnvelopeHeaders
//so we can ignore them because either we encoded them already or there is no
//way for the user to have set them. If a header is well known and user settable then
//we should encode it here, otherwise we have already encoded it if necessary
if (!MailHeaderInfo.IsUserSettable(headerName))
{
continue;
}
string[] values = headers.GetValues(headerName);
string encodedValue = string.Empty;
for (int j = 0; j < values.Length; j++)
{
//encode if we need to
if (MimeBasePart.IsAscii(values[j], false) ||
(allowUnicode && MailHeaderInfo.AllowsUnicode(headerName) && // EAI
!MailBnfHelper.HasCROrLF(values[j])))
{
encodedValue = values[j];
}
else
{
encodedValue = MimeBasePart.EncodeHeaderValue(values[j],
_headersEncoding,
MimeBasePart.ShouldUseBase64Encoding(_headersEncoding),
headerName.Length);
}
//potentially there are multiple values per key
if (j == 0)
{
//if it's the first or only value, set will overwrite all the values assigned to that key
//which is fine since we have them stored in values[]
headers.Set(headerName, encodedValue);
}
else
{
//this is a subsequent key, so we must Add it since the first key will have overwritten the
//other values
headers.Add(headerName, encodedValue);
}
}
}
}
internal void SetContentFromString(string contentString, Encoding encoding, string mediaType)
{
if (contentString == null)
{
throw new ArgumentNullException("content");
}
if (this.part.Stream != null)
{
this.part.Stream.Close();
}
if ((mediaType == null) || (mediaType == string.Empty))
{
mediaType = "text/plain";
}
int offset = 0;
try
{
if (((MailBnfHelper.ReadToken(mediaType, ref offset, null).Length == 0) || (offset >= mediaType.Length)) || (mediaType[offset++] != '/'))
{
throw new ArgumentException(SR.GetString("MediaTypeInvalid"), "mediaType");
}
if ((MailBnfHelper.ReadToken(mediaType, ref offset, null).Length == 0) || (offset < mediaType.Length))
{
throw new ArgumentException(SR.GetString("MediaTypeInvalid"), "mediaType");
}
}
catch (FormatException)
{
throw new ArgumentException(SR.GetString("MediaTypeInvalid"), "mediaType");
}
ContentType contentType = new ContentType(mediaType);
if (encoding == null)
{
if (MimeBasePart.IsAscii(contentString, false))
{
encoding = Encoding.ASCII;
}
else
{
encoding = Encoding.GetEncoding("utf-8");
}
}
contentType.CharSet = encoding.BodyName();
byte[] bytes = encoding.GetBytes(contentString);
this.part.SetContent(new MemoryStream(bytes), contentType);
if (MimeBasePart.ShouldUseBase64Encoding(encoding))
{
this.part.TransferEncoding = TransferEncoding.Base64;
}
else
{
this.part.TransferEncoding = TransferEncoding.QuotedPrintable;
}
}
internal void SetContentTypeName(bool allowUnicode)
{
if (!allowUnicode && _name != null && _name.Length != 0 && !MimeBasePart.IsAscii(_name, false))
{
Encoding encoding = NameEncoding ?? Encoding.GetEncoding(MimeBasePart.DefaultCharSet);
MimePart.ContentType.Name = MimeBasePart.EncodeHeaderValue(_name, encoding, MimeBasePart.ShouldUseBase64Encoding(encoding));
}
else
{
MimePart.ContentType.Name = _name;
}
}
internal void SetContentTypeName()
{
if (((this.name != null) && (this.name.Length != 0)) && !MimeBasePart.IsAscii(this.name, false))
{
Encoding nameEncoding = this.NameEncoding;
if (nameEncoding == null)
{
nameEncoding = Encoding.GetEncoding("utf-8");
}
base.MimePart.ContentType.Name = MimeBasePart.EncodeHeaderValue(this.name, nameEncoding, MimeBasePart.ShouldUseBase64Encoding(nameEncoding));
}
else
{
base.MimePart.ContentType.Name = this.name;
}
}
private string GetHost(bool allowUnicode)
{
string domain = host;
// Downgrade Unicode domain names
if (!allowUnicode && !MimeBasePart.IsAscii(domain, true))
{
IdnMapping mapping = new IdnMapping();
try
{
domain = mapping.GetAscii(domain);
}
catch (ArgumentException argEx)
{
throw new SmtpException(SR.GetString(SR.SmtpInvalidHostName, Address), argEx);
}
}
return(domain);
}
internal void SetContentFromString(string contentString, ContentType contentType)
{
if (contentString == null)
{
throw new ArgumentNullException("content");
}
if (part.Stream != null)
{
part.Stream.Close();
}
Encoding encoding;
if (contentType != null && contentType.CharSet != null)
{
encoding = Text.Encoding.GetEncoding(contentType.CharSet);
}
else
{
if (MimeBasePart.IsAscii(contentString, false))
{
encoding = Text.Encoding.ASCII;
}
else
{
encoding = Text.Encoding.GetEncoding(MimeBasePart.defaultCharSet);
}
}
byte[] buffer = encoding.GetBytes(contentString);
part.SetContent(new MemoryStream(buffer), contentType);
if (MimeBasePart.ShouldUseBase64Encoding(encoding))
{
part.TransferEncoding = TransferEncoding.Base64;
}
else
{
part.TransferEncoding = TransferEncoding.QuotedPrintable;
}
}
public MailAddress(string address, string displayName, Encoding displayNameEncoding)
{
if (address == null)
{
throw new ArgumentNullException("address");
}
if (address == string.Empty)
{
throw new ArgumentException(SR.GetString("net_emptystringcall", new object[] { "address" }), "address");
}
this.displayNameEncoding = displayNameEncoding;
this.displayName = displayName;
this.ParseValue(address);
if ((this.displayName != null) && (this.displayName != string.Empty))
{
if ((this.displayName[0] == '"') && (this.displayName[this.displayName.Length - 1] == '"'))
{
this.displayName = this.displayName.Substring(1, this.displayName.Length - 2);
}
this.displayName = this.displayName.Trim();
}
if ((this.displayName != null) && (this.displayName.Length > 0))
{
if (!MimeBasePart.IsAscii(this.displayName, false) || (this.displayNameEncoding != null))
{
if (this.displayNameEncoding == null)
{
this.displayNameEncoding = Encoding.GetEncoding("utf-8");
}
this.encodedDisplayName = MimeBasePart.EncodeHeaderValue(this.displayName, this.displayNameEncoding, MimeBasePart.ShouldUseBase64Encoding(displayNameEncoding));
StringBuilder builder = new StringBuilder();
int offset = 0;
MailBnfHelper.ReadQuotedString(this.encodedDisplayName, ref offset, builder, true);
this.encodedDisplayName = builder.ToString();
}
else
{
this.encodedDisplayName = this.displayName;
}
}
}
// Encodes the full email address, folding as needed
internal string Encode(int charsConsumed, bool allowUnicode)
{
string encodedAddress = String.Empty;
IEncodableStream encoder;
byte[] buffer;
Debug.Assert(this.Address != null, "address was null");
//do we need to take into account the Display name? If so, encode it
if (!String.IsNullOrEmpty(this.displayName))
{
//figure out the encoding type. If it's all ASCII and contains no CRLF then
//it does not need to be encoded for parity with other email clients. We will
//however fold at the end of the display name so that the email address itself can
//be appended.
if (MimeBasePart.IsAscii(this.displayName, false) || allowUnicode)
{
encodedAddress = String.Format(CultureInfo.InvariantCulture, "\"{0}\"", this.displayName);
}
else
{
//encode the displayname since it's non-ascii
encoder = encoderFactory.GetEncoderForHeader(this.displayNameEncoding, false, charsConsumed);
buffer = displayNameEncoding.GetBytes(this.displayName);
encoder.EncodeBytes(buffer, 0, buffer.Length);
encodedAddress = encoder.GetEncodedString();
}
//address should be enclosed in <> when a display name is present
encodedAddress += " " + GetSmtpAddress(allowUnicode);
}
else
{
//no display name, just return the address
encodedAddress = GetAddress(allowUnicode);
}
return(encodedAddress);
}