private static void ParseContentFields(string s, EmbeddedContent EmbeddedContent)
{
foreach (KeyValuePair <string, string> Field in CommonTypes.ParseFieldValues(s))
{
switch (Field.Key.ToUpper())
{
case "NAME":
EmbeddedContent.Name = Field.Value;
break;
case "FILENAME":
EmbeddedContent.FileName = Field.Value;
break;
}
}
}
private static void ParseContentFields(string s, EmbeddedContent EmbeddedContent)
{
foreach (KeyValuePair <string, string> Field in CommonTypes.ParseFieldValues(s))
{
switch (Field.Key.ToUpper())
{
case "NAME":
EmbeddedContent.Name = Field.Value;
break;
case "FILENAME":
EmbeddedContent.FileName = Field.Value;
break;
case "SIZE":
if (int.TryParse(Field.Value, out int i))
{
EmbeddedContent.Size = i;
}
break;
case "CREATION-DATE":
if (CommonTypes.TryParseRfc822(Field.Value, out DateTimeOffset DTO))
{
EmbeddedContent.CreationDate = DTO;
}
break;
case "MODIFICATION-DATE":
if (CommonTypes.TryParseRfc822(Field.Value, out DTO))
{
EmbeddedContent.ModificationDate = DTO;
}
break;
}
}
}
private static void AddPart(byte[] Data, int Start, int i,
Dictionary <string, object> Form, List <EmbeddedContent> List, Uri BaseUri)
{
int j, k, l, m;
int Max = i - 3;
for (j = Start; j < Max; j++)
{
if (Data[j] == '\r' && Data[j + 1] == '\n' && Data[j + 2] == '\r' && Data[j + 3] == '\n')
{
break;
}
}
if (j == Start)
{
return;
}
if (j < i)
{
k = 0;
if (i >= 2 && Data[i - 1] == '-' && Data[i - 2] == '-')
{
k = 2;
if (i >= 4 && Data[i - 1 - k] == '\n' && Data[i - 2 - k] == '\r')
{
k += 2;
}
}
if (i - j - 4 - k <= 0)
{
return;
}
string Header = Encoding.ASCII.GetString(Data, Start, j - Start);
string Key, Value;
byte[] Data2 = new byte[i - j - 4 - k];
EmbeddedContent EmbeddedContent = new EmbeddedContent()
{
ContentType = "text/plain",
Raw = Data2
};
Array.Copy(Data, j + 4, Data2, 0, i - j - 4 - k);
string[] Rows = Header.Split(CommonTypes.CRLF);
l = Rows.Length;
m = -1;
for (j = 0; j < l; j++)
{
Key = Rows[j];
if (!string.IsNullOrEmpty(Key))
{
if (char.IsWhiteSpace(Key[0]) && m >= 0)
{
Rows[m] += Key;
Rows[j] = string.Empty;
}
else
{
m = j;
}
}
}
foreach (string Row in Rows)
{
j = Row.IndexOf(':');
if (j < 0)
{
continue;
}
Key = Row.Substring(0, j).Trim();
Value = Row.Substring(j + 1).Trim();
switch (Key.ToUpper())
{
case "CONTENT-TYPE":
EmbeddedContent.ContentType = Value;
j = Value.IndexOf(';');
if (j >= 0)
{
ParseContentFields(Value.Substring(j + 1).Trim(), EmbeddedContent);
Value = Value.Substring(0, j).Trim();
}
break;
case "CONTENT-DISPOSITION":
j = Value.IndexOf(';');
if (j >= 0)
{
ParseContentFields(Value.Substring(j + 1).Trim(), EmbeddedContent);
Value = Value.Substring(0, j).Trim();
}
switch (Value.ToUpper())
{
case "INLINE":
EmbeddedContent.Disposition = ContentDisposition.Inline;
break;
case "ATTACHMENT":
EmbeddedContent.Disposition = ContentDisposition.Attachment;
break;
}
break;
case "CONTENT-TRANSFER-ENCODING":
EmbeddedContent.TransferEncoding = Value;
break;
case "CONTENT-ID":
EmbeddedContent.ID = Value;
break;
case "CONTENT-DESCRIPTION":
EmbeddedContent.Description = Value;
break;
}
}
if (!string.IsNullOrEmpty(EmbeddedContent.TransferEncoding))
{
if (TryTransferDecode(Data2, EmbeddedContent.TransferEncoding, out Data2))
{
EmbeddedContent.TransferDecoded = Data2;
}
else
{
throw new Exception("Unrecognized Content-Transfer-Encoding: " + EmbeddedContent.TransferEncoding);
}
}
EmbeddedContent.Decoded = InternetContent.Decode(EmbeddedContent.ContentType, Data2, BaseUri);
if (!(Form is null))
{
Form[EmbeddedContent.Name] = EmbeddedContent.Decoded;
if (!(EmbeddedContent.Decoded is byte[]))
{
Form[EmbeddedContent.Name + "_Binary"] = Data2;
}
if (!string.IsNullOrEmpty(EmbeddedContent.ContentType))
{
Form[EmbeddedContent.Name + "_ContentType"] = EmbeddedContent.ContentType;
}
if (!string.IsNullOrEmpty(EmbeddedContent.FileName))
{
Form[EmbeddedContent.Name + "_FileName"] = EmbeddedContent.FileName;
}
}
if (!(List is null))
{
List.Add(EmbeddedContent);
}
}
}
internal static void Decode(byte[] Data, KeyValuePair <string, string>[] Fields, Dictionary <string, object> Form,
List <EmbeddedContent> List, Uri BaseUri)
{
string Boundary = null;
if (Fields != null)
{
foreach (KeyValuePair <string, string> P in Fields)
{
if (P.Key.ToUpper() == "BOUNDARY")
{
Boundary = P.Value;
break;
}
}
}
if (string.IsNullOrEmpty(Boundary))
{
throw new Exception("No boundary defined.");
}
byte[] BoundaryBin = Encoding.ASCII.GetBytes(Boundary);
int Start = 0;
int i = 0;
int c = Data.Length;
int d = BoundaryBin.Length;
int j, k, l, m;
while (i < c)
{
for (j = 0; j < d; j++)
{
if (Data[i + j] != BoundaryBin[j])
{
break;
}
}
if (j == d)
{
for (j = Start; j < i; j++)
{
if (Data[j] == '\r' && Data[j + 1] == '\n' && Data[j + 2] == '\r' && Data[j + 3] == '\n')
{
break;
}
}
if (j < i)
{
k = 0;
if (Data[i - 1] == '-' && Data[i - 2] == '-')
{
k = 2;
}
if (Data[i - 1 - k] == '\n' && Data[i - 2 - k] == '\r')
{
k += 2;
}
string Header = Encoding.ASCII.GetString(Data, Start, j - Start);
string Key, Value;
byte[] Data2 = new byte[i - j - 4 - k];
EmbeddedContent EmbeddedContent = new EmbeddedContent()
{
ContentType = "text/plain",
Raw = Data2
};
Array.Copy(Data, j + 4, Data2, 0, i - j - 4 - k);
string[] Rows = Header.Split(CommonTypes.CRLF);
l = Rows.Length;
m = -1;
for (j = 0; j < l; j++)
{
Key = Rows[j];
if (!string.IsNullOrEmpty(Key))
{
if (char.IsWhiteSpace(Key[0]) && m >= 0)
{
Rows[m] += Key;
Rows[j] = string.Empty;
}
else
{
m = j;
}
}
}
foreach (string Row in Rows)
{
j = Row.IndexOf(':');
if (j < 0)
{
continue;
}
Key = Row.Substring(0, j).Trim();
Value = Row.Substring(j + 1).Trim();
switch (Key.ToUpper())
{
case "CONTENT-TYPE":
EmbeddedContent.ContentType = Value;
j = Value.IndexOf(';');
if (j >= 0)
{
ParseContentFields(Value.Substring(j + 1).Trim(), EmbeddedContent);
Value = Value.Substring(0, j).Trim();
}
break;
case "CONTENT-DISPOSITION":
j = Value.IndexOf(';');
if (j >= 0)
{
ParseContentFields(Value.Substring(j + 1).Trim(), EmbeddedContent);
Value = Value.Substring(0, j).Trim();
}
switch (Value.ToUpper())
{
case "INLINE":
EmbeddedContent.Disposition = ContentDisposition.Inline;
break;
case "ATTACHMENT":
EmbeddedContent.Disposition = ContentDisposition.Attachment;
break;
}
break;
case "CONTENT-TRANSFER-ENCODING":
EmbeddedContent.TransferEncoding = Value;
break;
case "CONTENT-ID":
EmbeddedContent.ID = Value;
break;
case "CONTENT-DESCRIPTION":
EmbeddedContent.Description = Value;
break;
}
}
if (!string.IsNullOrEmpty(EmbeddedContent.TransferEncoding))
{
if (TryTransferDecode(Data2, EmbeddedContent.TransferEncoding, out Data2))
{
EmbeddedContent.TransferDecoded = Data2;
}
else
{
throw new Exception("Unrecognized Content-Transfer-Encoding: " + EmbeddedContent.TransferEncoding);
}
}
EmbeddedContent.Decoded = InternetContent.Decode(EmbeddedContent.ContentType, Data2, BaseUri);
if (Form != null)
{
Form[EmbeddedContent.Name] = EmbeddedContent.Decoded;
if (!(EmbeddedContent.Decoded is byte[]))
{
Form[EmbeddedContent.Name + "_Binary"] = Data2;
}
if (!string.IsNullOrEmpty(EmbeddedContent.ContentType))
{
Form[EmbeddedContent.Name + "_ContentType"] = EmbeddedContent.ContentType;
}
if (!string.IsNullOrEmpty(EmbeddedContent.FileName))
{
Form[EmbeddedContent.Name + "_FileName"] = EmbeddedContent.FileName;
}
}
if (List != null)
{
List.Add(EmbeddedContent);
}
}
i += d;
while (i < c && Data[i] <= 32)
{
i++;
}
Start = i;
}
else
{
i++;
}
}
}
