private static string ConstructParts(MIME_Entity entity, bool bodystructure)
{
MIME_Encoding_EncodedWord mIME_Encoding_EncodedWord = new MIME_Encoding_EncodedWord(MIME_EncodedWordEncoding.B, Encoding.UTF8);
mIME_Encoding_EncodedWord.Split = false;
StringBuilder stringBuilder = new StringBuilder();
if (entity.Body is MIME_b_Multipart)
{
stringBuilder.Append("(");
foreach (MIME_Entity entity2 in ((MIME_b_Multipart)entity.Body).BodyParts)
{
stringBuilder.Append(IMAP_BODY.ConstructParts(entity2, bodystructure));
}
if (entity.ContentType != null && entity.ContentType.SubType != null)
{
stringBuilder.Append(" \"" + entity.ContentType.SubType + "\"");
}
else
{
stringBuilder.Append(" NIL");
}
stringBuilder.Append(")");
}
else
{
stringBuilder.Append("(");
if (entity.ContentType != null && entity.ContentType.Type != null)
{
stringBuilder.Append("\"" + entity.ContentType.Type + "\"");
}
else
{
stringBuilder.Append("NIL");
}
if (entity.ContentType != null && entity.ContentType.SubType != null)
{
stringBuilder.Append(" \"" + entity.ContentType.SubType + "\"");
}
else
{
stringBuilder.Append(" NIL");
}
if (entity.ContentType != null)
{
if (entity.ContentType.Parameters.Count > 0)
{
stringBuilder.Append(" (");
bool flag = true;
foreach (MIME_h_Parameter mIME_h_Parameter in entity.ContentType.Parameters)
{
if (flag)
{
flag = false;
}
else
{
stringBuilder.Append(" ");
}
stringBuilder.Append(string.Concat(new string[]
{
"\"",
mIME_h_Parameter.Name,
"\" \"",
mIME_Encoding_EncodedWord.Encode(mIME_h_Parameter.Value),
"\""
}));
}
stringBuilder.Append(")");
}
else
{
stringBuilder.Append(" NIL");
}
}
else
{
stringBuilder.Append(" NIL");
}
string contentID = entity.ContentID;
if (contentID != null)
{
stringBuilder.Append(" \"" + mIME_Encoding_EncodedWord.Encode(contentID) + "\"");
}
else
{
stringBuilder.Append(" NIL");
}
string contentDescription = entity.ContentDescription;
if (contentDescription != null)
{
stringBuilder.Append(" \"" + mIME_Encoding_EncodedWord.Encode(contentDescription) + "\"");
}
else
{
stringBuilder.Append(" NIL");
}
if (entity.ContentTransferEncoding != null)
{
stringBuilder.Append(" \"" + mIME_Encoding_EncodedWord.Encode(entity.ContentTransferEncoding) + "\"");
}
else
{
stringBuilder.Append(" \"7bit\"");
}
if (entity.Body is MIME_b_SinglepartBase)
{
stringBuilder.Append(" " + ((MIME_b_SinglepartBase)entity.Body).EncodedData.Length.ToString());
}
else
{
stringBuilder.Append(" 0");
}
if (entity.Body is MIME_b_MessageRfc822)
{
stringBuilder.Append(" " + IMAP_Envelope.ConstructEnvelope(((MIME_b_MessageRfc822)entity.Body).Message));
}
if (entity.Body is MIME_b_Text)
{
long num = 0L;
StreamLineReader streamLineReader = new StreamLineReader(new MemoryStream(((MIME_b_SinglepartBase)entity.Body).EncodedData));
for (byte[] array = streamLineReader.ReadLine(); array != null; array = streamLineReader.ReadLine())
{
num += 1L;
}
stringBuilder.Append(" " + num.ToString());
}
stringBuilder.Append(")");
}
return(stringBuilder.ToString());
}
/// <summary>
/// Constructs specified entity and it's childentities bodystructure string.
/// </summary>
/// <param name="entity">Mime entity.</param>
/// <param name="bodystructure">Specifies if to construct BODY or BODYSTRUCTURE.</param>
/// <returns></returns>
private static string ConstructParts(MIME_Entity entity, bool bodystructure)
{
/* RFC 3501 7.4.2 BODYSTRUCTURE
* BODY A form of BODYSTRUCTURE without extension data.
*
* A parenthesized list that describes the [MIME-IMB] body
* structure of a message. This is computed by the server by
* parsing the [MIME-IMB] header fields, defaulting various fields
* as necessary.
*
* For example, a simple text message of 48 lines and 2279 octets
* can have a body structure of: ("TEXT" "PLAIN" ("CHARSET"
* "US-ASCII") NIL NIL "7BIT" 2279 48)
*
* Multiple parts are indicated by parenthesis nesting. Instead
* of a body type as the first element of the parenthesized list,
* there is a sequence of one or more nested body structures. The
* second element of the parenthesized list is the multipart
* subtype (mixed, digest, parallel, alternative, etc.).
*
* For example, a two part message consisting of a text and a
* BASE64-encoded text attachment can have a body structure of:
* (("TEXT" "PLAIN" ("CHARSET" "US-ASCII") NIL NIL "7BIT" 1152
* 23)("TEXT" "PLAIN" ("CHARSET" "US-ASCII" "NAME" "cc.diff")
* "<*****@*****.**>" "Compiler diff"
* "BASE64" 4554 73) "MIXED")
*
* Extension data follows the multipart subtype. Extension data
* is never returned with the BODY fetch, but can be returned with
* a BODYSTRUCTURE fetch. Extension data, if present, MUST be in
* the defined order. The extension data of a multipart body part
* are in the following order:
*
* body parameter parenthesized list
* A parenthesized list of attribute/value pairs [e.g., ("foo"
* "bar" "baz" "rag") where "bar" is the value of "foo", and
* "rag" is the value of "baz"] as defined in [MIME-IMB].
*
* body disposition
* A parenthesized list, consisting of a disposition type
* string, followed by a parenthesized list of disposition
* attribute/value pairs as defined in [DISPOSITION].
*
* body language
* A string or parenthesized list giving the body language
* value as defined in [LANGUAGE-TAGS].
*
* body location
* A string list giving the body content URI as defined in [LOCATION].
*
* Any following extension data are not yet defined in this
* version of the protocol. Such extension data can consist of
* zero or more NILs, strings, numbers, or potentially nested
* parenthesized lists of such data. Client implementations that
* do a BODYSTRUCTURE fetch MUST be prepared to accept such
* extension data. Server implementations MUST NOT send such
* extension data until it has been defined by a revision of this
* protocol.
*
* The basic fields of a non-multipart body part are in the
* following order:
*
* body type
* A string giving the content media type name as defined in [MIME-IMB].
*
* body subtype
* A string giving the content subtype name as defined in [MIME-IMB].
*
* body parameter parenthesized list
* A parenthesized list of attribute/value pairs [e.g., ("foo"
* "bar" "baz" "rag") where "bar" is the value of "foo" and
* "rag" is the value of "baz"] as defined in [MIME-IMB].
*
* body id
* A string giving the content id as defined in [MIME-IMB].
*
* body description
* A string giving the content description as defined in [MIME-IMB].
*
* body encoding
* A string giving the content transfer encoding as defined in [MIME-IMB].
*
* body size
* A number giving the size of the body in octets. Note that
* this size is the size in its transfer encoding and not the
* resulting size after any decoding.
*
* A body type of type MESSAGE and subtype RFC822 contains,
* immediately after the basic fields, the envelope structure,
* body structure, and size in text lines of the encapsulated
* message.
*
* A body type of type TEXT contains, immediately after the basic
* fields, the size of the body in text lines. Note that this
* size is the size in its content transfer encoding and not the
* resulting size after any decoding.
*
* Extension data follows the basic fields and the type-specific
* fields listed above. Extension data is never returned with the
* BODY fetch, but can be returned with a BODYSTRUCTURE fetch.
* Extension data, if present, MUST be in the defined order.
*
* The extension data of a non-multipart body part are in the
* following order:
*
* body MD5
* A string giving the body MD5 value as defined in [MD5].
*
* body disposition
* A parenthesized list with the same content and function as
* the body disposition for a multipart body part.
*
* body language
* A string or parenthesized list giving the body language
* value as defined in [LANGUAGE-TAGS].
*
* body location
* A string list giving the body content URI as defined in [LOCATION].
*
* Any following extension data are not yet defined in this
* version of the protocol, and would be as described above under
* multipart extension data.
*
*
* // We don't construct extention fields like rfc says:
* Server implementations MUST NOT send such
* extension data until it has been defined by a revision of this
* protocol.
*
*
* contentTypeMainMediaType - Example: 'TEXT'
* contentTypeSubMediaType - Example: 'PLAIN'
* conentTypeParameters - Example: '("CHARSET" "iso-8859-1" ...)'
* contentID - Content-ID: header field value.
* contentDescription - Content-Description: header field value.
* contentEncoding - Content-Transfer-Encoding: header field value.
* contentSize - mimeEntity ENCODED data size
* [envelope] - NOTE: included only if contentType = "message" !!!
* [contentLines] - number of ENCODED data lines. NOTE: included only if contentType = "text" !!!
*
* // Basic fields for multipart
* (nestedMimeEntries) contentTypeSubMediaType
*
* // Basic fields for non-multipart
* contentTypeMainMediaType contentTypeSubMediaType (conentTypeParameters) contentID contentDescription contentEncoding contentSize [envelope] [contentLine]
*
*/
MIME_Encoding_EncodedWord wordEncoder = new MIME_Encoding_EncodedWord(MIME_EncodedWordEncoding.B, Encoding.UTF8);
wordEncoder.Split = false;
StringBuilder retVal = new StringBuilder();
// Multipart message
if (entity.Body is MIME_b_Multipart)
{
retVal.Append("(");
// Construct child entities.
foreach (MIME_Entity childEntity in ((MIME_b_Multipart)entity.Body).BodyParts)
{
// Construct child entity. This can be multipart or non multipart.
retVal.Append(ConstructParts(childEntity, bodystructure));
}
// Add contentTypeSubMediaType
if (entity.ContentType != null && entity.ContentType.SubType != null)
{
retVal.Append(" \"" + entity.ContentType.SubType + "\"");
}
else
{
retVal.Append(" NIL");
}
retVal.Append(")");
}
// Single part message
else
{
retVal.Append("(");
// NOTE: all header fields and parameters must in ENCODED form !!!
// Add contentTypeMainMediaType
if (entity.ContentType != null && entity.ContentType.Type != null)
{
retVal.Append("\"" + entity.ContentType.Type + "\"");
}
else
{
retVal.Append("NIL");
}
// Add contentTypeSubMediaType
if (entity.ContentType != null && entity.ContentType.SubType != null)
{
retVal.Append(" \"" + entity.ContentType.SubType + "\"");
}
else
{
retVal.Append(" NIL");
}
// conentTypeParameters - Syntax: {("name" SP "value" *(SP "name" SP "value"))}
if (entity.ContentType != null)
{
if (entity.ContentType.Parameters.Count > 0)
{
retVal.Append(" (");
bool first = true;
foreach (MIME_h_Parameter parameter in entity.ContentType.Parameters)
{
// For the first item, don't add SP.
if (first)
{
first = false;
}
else
{
retVal.Append(" ");
}
retVal.Append("\"" + parameter.Name + "\" \"" + wordEncoder.Encode(parameter.Value) + "\"");
}
retVal.Append(")");
}
else
{
retVal.Append(" NIL");
}
}
else
{
retVal.Append(" NIL");
}
// contentID
string contentID = entity.ContentID;
if (contentID != null)
{
retVal.Append(" \"" + wordEncoder.Encode(contentID) + "\"");
}
else
{
retVal.Append(" NIL");
}
// contentDescription
string contentDescription = entity.ContentDescription;
if (contentDescription != null)
{
retVal.Append(" \"" + wordEncoder.Encode(contentDescription) + "\"");
}
else
{
retVal.Append(" NIL");
}
// contentEncoding
if (entity.ContentTransferEncoding != null)
{
retVal.Append(" \"" + wordEncoder.Encode(entity.ContentTransferEncoding) + "\"");
}
else
{
// If not specified, then must be 7bit.
retVal.Append(" \"7bit\"");
}
// contentSize
if (entity.Body is MIME_b_SinglepartBase)
{
retVal.Append(" " + ((MIME_b_SinglepartBase)entity.Body).EncodedData.Length.ToString());
}
else
{
retVal.Append(" 0");
}
// envelope ---> FOR ContentType: message/rfc822 ONLY ###
if (entity.Body is MIME_b_MessageRfc822)
{
retVal.Append(" " + IMAP_Envelope.ConstructEnvelope(((MIME_b_MessageRfc822)entity.Body).Message));
// TODO: BODYSTRUCTURE,LINES
}
// contentLines ---> FOR ContentType: text/xxx ONLY ###
if (entity.Body is MIME_b_Text)
{
long lineCount = 0;
StreamLineReader r = new StreamLineReader(new MemoryStream(((MIME_b_SinglepartBase)entity.Body).EncodedData));
byte[] line = r.ReadLine();
while (line != null)
{
lineCount++;
line = r.ReadLine();
}
retVal.Append(" " + lineCount.ToString());
}
retVal.Append(")");
}
return(retVal.ToString());
}