Mail2000.pas
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上传日期:2021-01-30
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- (*
- Component name...................: Mail2000 (Mail2000.pas)
- Classes implemented..............: TPOP2000, TSMTP2000, TMailMessage2000
- Version..........................: 1.10.3
- Status...........................: Beta
- Last update......................: 2002-03-25
- Author...........................: Marcello Tavares
- Website..........................: http://groups.yahoo.com/group/tmail2000
- Comments, bugs, suggestions to...: tmail2000@yahoogroups.com
- Language.........................: English
- Platform (tested)................: Windows 95/98/98SE/2000/XP
- Requires.........................: Borland Delphi 5 Professional or better
- Features
- --------
- 1. Retrieve and delete messages from POP3 servers;
- 2. Send messages through SMTP servers;
- 3. Parse MIME or UUCODE messages in header, body, alternative texts and
- attachments;
- 4. Create or modify MIME messages on-the-fly;
- 5. HTML and embedded graphics support;
- 6. Save or retrieve messages or attachments from files or streams;
- 7. Ideal for automated e-mail processing.
- Know limitations
- ----------------
- 1. Does not build UUCODE messages;
- 2. Some problems when running on Windows ME (worth a try);
- 3. Unexpected behavior when netlink not present;
- 4. Some troubles when handling very big messages;
- 5. Some bugs and memory leaks;
- How to install
- --------------
- Create a directory;
- Extract archive contents on it;
- Open Delphi;
- Click File/Close All;
- Click File/Open;
- Select TMail2000.dpk;
- Compile the Package;
- Install the Package;
- Click File/Close All;
- Click Tools/Environment/Library and add the path to where you extracted the components;
- Now try to build and run Demo.dpr
- How to use
- ----------
- 1. The better way to learn is play with the demo application;
- 2. I'm not planning to type a help file;
- 3. Fell free to mail your questions to me, expect aswer for 1-2 weeks;
- 4. See 'Discussion Group' section below;
- 5. Always check for the newest version at component website;
- 6. When upgrading, always check out 'What's New' section;
- 7. Good luck!
- License stuff
- -------------
- Mail2000 Copyleft 1999-2002
- This software is provided as-is, without any express or implied
- warranty. In no event will the author be held liable for any damages
- arising from the use of this software.
- As a freeware, the author reserve your rights to not provide support,
- requested changes in the code, specific versions, improvements of any
- kind and bug fixes. The main purpose is to help a little the programmers
- community over the world as a whole, not just one person or organization.
- Permission is granted to anyone to use this software for any purpose,
- including commercial applications, and to alter it and redistribute it
- freely, subject to the following restrictions:
- 1. The origin of this software must not be misrepresented, you must not
- claim that you wrote the original software.
- 2. If you use this software in a product, the author must known all details
- about its release, including objectives, availability and contact info. An
- acknowledgment in the product documentation is required.
- 3. Altered source versions must be plainly marked as such, and must not be
- misrepresented as being an original software. When redistributed, a copy
- must always be sent to the author.
- Please, consider my hard work.
- Thanks to
- ---------
- Mariano D. Podesta (marianopodesta@usa.net) - The author of wlPop3
- component, from where I copied some decoding routines;
- Sergio Kessler (sergio@perio.unlp.edu.ar) - The author of SakEmail
- component, from where I based my encoding and SMTP algorithms;
- Delphi Super Page (http://delphi.icm.edu.pl) and Torry Delphi Page
- (http://www.torry.ru) - For providing the best way to find great libraries
- and to join the Delphi community;
- Yunarso Anang (yasx@hotmail.com) - For providing some functions for
- correct treatment of oriental charsets;
- Christian Bormann (chris@xynx.de) - For giving a lot of suggestions
- and hard testing;
- Tommy Andersen (sorry, I lost his address) - For warning about some
- bugs in code;
- Kunikazu Okada (kunikazu@okada.cc) - For detailed and careful suggestions
- to help mail composition;
- Anderson (andermuller@conex.com.br) - Advices;
- Rene de Jong (rmdejong@ism.nl) - Extensive bugfixes;
- Hou Yg (yghou@yahoo.com) - Improvements;
- Peter Baars (peter.baars@elburg.nl) - Bugfixes;
- Giuseppe Mingolla (gmingolla@criptanet.it) - AttachStream method;
- Milkopb (milkopb@yahoo.com) - Bugfixes;
- David P. Schwartz (davids@desertigloo.com) - Suggestions and bugfixes;
- John GBA (john@gbasolutions.co.uk) - Testing;
- Mike (michaeldmount@yahoo.com) - Return-Receipt support and bugfixes;
- Mabiao Michael (mabiao_michael@yahoo.com) - SMTP authentication code;
- Anyone interested in helping me to improve this component, including you,
- just by downloading it.
- What's new in 1.1 version
- -------------------------
- 1. Fixed the threatment of encoded fields in header;
- 2. Fixed some fake attachments found in message;
- 3. Included a string property "LastMessage" containing the source of
- last message retrieved;
- 4. Now decoding file names;
- 5. Fixed way to identify kind of host address;
- 6. Added support for some tunnel proxy servers (eg via telnet port);
- 7. Socket changed to non-blocking to improve communication;
- 8. Fixed crashes when decoding encoded labels;
- 9. Fixed header decoding with ansi charsets;
- 10. Fixed crashes when there are deleted messages on server;
- 11. Now recognizing text/??? file attachments;
- 12. Added Content-ID label at attachment header, now you can reference
- attached files on HTML code as <img src=cid:file.ext>;
- 13. Improved a lot the speed when decoding messages;
- 14. Thousands of minor bug fixes.
- What's new in 1.2 version
- -------------------------
- 1. Added HELO command when talking to SMTP server;
- 2. Changed CCO: fields (in portuguese) to BCC:
- 3. It doesn't remove BCC: field after SMTP send anymore;
- 4. Some random bugs fixed.
- What's new in 1.3 version
- -------------------------
- 1. POP and SMTP routines discontinued, but they will remain in the code;
- 2. Some suggestions added.
- What's new in 1.4 version
- -------------------------
- 1. Improved UUCODE decoding;
- 2. Range overflow bugs fixed;
- 3. Changed MailMessage to MailMessage2000 to avoid class name conflicts.
- What's new in 1.5 version
- -------------------------
- 1. I decided to improve POP and SMTP, but still aren't reliable;
- 2. Another sort of bug fixes;
- 3. TPOP2000.RetrieveHeader procedure added;
- 4. TPOP2000.DeleteAfterRetrieve property added;
- 5. Improved threatment of messages with no text parts;
- 6. Proxy support will remain, but has been discontinued;
- 7. TMailMessage2000.LoadFromFile procedure added;
- 8. TMailMessage2000.SaveToFile procedure added.
- What's new in 1.6 version
- -------------------------
- 1. Fixed expecting '+OK ' instead of '+OK' from SMTP;
- 2. Stopped using TClientSocket.ReceiveLength, which is innacurate.
- What's new in 1.7 version
- -------------------------
- 1. Handling of 'Received' (hop) headers. Now it is possible to trace the
- path e-mail went on;
- 2. Again, bug fixes;
- 3. Added properties to read (and just to read) 'To:' information and 'Cc:'
- information using TStringList;
- 4. Added procedures to set destinations in comma-delimited format;
- 5. Removed text/rtf handling.
- What's new in 1.8 version
- -------------------------
- 1. Guess what? Bug fixes;
- 2. Some memory leaks identified and fixed;
- 3. Improved SMTP processing;
- 4. Exception fixed in function 'Fill';
- 5. Added 'AttachStream' method.
- What's new in 1.9 version
- -------------------------
- 1. Exceptions fixed on date handling;
- 2. Improved 'Received' header handling;
- 3. Added 'Mime-Version' field;
- 4. Added 'Content-Length' field;
- 5. Fixed bug when there is comma on sender/recipient name;
- 6. Several compatibility improvements;
- 7. Several redundancies removed;
- 8. Added 'Embedded' option for attachments;
- 9. Improved mail bulding structure and algorithm;
- 10. Added 'FindParts' to identify texts and attachments of foreing messages;
- 11. Removed 'GetAttachList' (replaced by 'FindParts');
- 12. Added 'Normalize' to reformat foreing messages on Mail2000 standards;
- 13. Changed 'SetTextPlain' and 'SetTextHTML' to work with String type;
- 14. Added 'LoadFromStream' and 'SaveToStream';
- 15. Added 'MessageSource' read/write String property;
- 16. Added 'GetUIDL' method to POP component;
- 17. Added 'DetachFile' method;
- 18. Added 'Abort' method to POP and SMTP components;
- 19. Better handling of recipient fields (TMailRecipients);
- 20. Added 'AttachString' method;
- 21. Added 'AddHop' method;
- 22. Added 'SendMessageTo' method to SMTP component;
- 23. Added 'SendStringTo' method to SMTP component;
- 24. POP and SMTP components hard-tested;
- 25. POP and SMTP doesn't require MailMessage to work anymore;
- 26. Removed proxy support (but still working with ordinary proxy redirection);
- 27. Fixed one dot line causing SMTP to truncate the message;
- 28. Long lines on header now being wrapped;
- 29. Added 'TextEncoding' published property;
- 30. SendMessage will abort on first recipient rejected;
- 31. Treatment of date/time without seconds;
- 32. Better progress events behavior (but still sloppy);
- What's new in 1.10.x version
- ----------------------------
- 1. Now mail will be multipart only when needed;
- 2. Fixed empty attachments issues;
- 3. Fixed exceptions when handing text parts;
- 4. Fixed exceptions when message has empty body;
- 5. Now 'Normalize' is only needed when modifying a foreing message;
- 6. Now recognizing 'text' content-type;
- 7. Control characters discarded in 'MailDateToDelphiDate';
- 8. Repeated recipient fields now supported;
- 9. Fixed Memory leak in RetrieveHeader;
- 10. Fixed GetTimeZoneBias problem for countries with no daylight saving;
- 11. Now text parts will always be in top of the section;
- 12. Now ignoring the charcase of encoding type descriptor;
- 13. Added support for 'x-uuencode' encoding type;
- 14. Added 'EmbedMethod' published property;
- 15. Added 'ContentLocationBase' published property;
- 16. Added Content-Location embedded file attachment method (like .mht files);
- 17. Attachment encoding now defined by 'AttachEncoding' published property;
- 18. Address fields with parenthesis now supported;
- 19. Added mail priority support;
- 20. Added return-receipt support;
- 21. Added SMTP authentication support;
- 22. Header wrapping with #32 char now supported;
- 23. Fixed zero-length embedded attachment;
- 24. Added UserName and Password published properties for SMTP;
- 25. Added Handshaking property to control auto-authentication of SMTP;
- 26. Encode trailing spaces/tabs 韓 quoted-printable process;
- 27. Correct treatment of 7bit encoded data (just copy...);
- 28. Removed 7bit encoding (never really implemented);
- 29. Faster quoted-printable decoding.
- Author data
- -----------
- Marcello Roberto Tavares Pereira
- mycelo@yahoo.com
- ICQ 5831833
- Sorocaba/SP - BRAZIL
- Spoken languages: Portuguese, English, Spanish
- Discussion Group
- ----------------
- Please join TMail2000 group, exchange information about mailing
- application development with other power programmers, and receive
- suggestions, advices, bugfixes and updates about this component.
- http://groups.yahoo.com/group/tmail2000
- tmail2000-subscribe@yahoogroups.com
- This site stores all previous messages, you can find valuable
- information about this component there. If you have a question,
- please search this site before asking me, I will not post the
- same answer twice.
- *)
- unit Mail2000;
- {Please don't remove the following line}
- {$BOOLEVAL OFF}
- interface
- uses
- Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
- WinSock, ScktComp, Math, Registry, ExtCtrls;
- type
- TMailPartList = class;
- TMailMessage2000 = class;
- TSocketTalk = class;
- TMessageSize = array of Integer;
- TSessionState = (stNone, stConnect, stUser, stPass, stStat, stList, stRetr, stDele, stUIDL, stHelo, stMail, stRcpt, stEhlo, stSMTPUser, stSMTPPass, stAuthLogin, stNoop, stData, stSendData, stQuit);
- TTalkError = (teGeneral, teSend, teReceive, teConnect, teDisconnect, teAccept, teTimeout, teNoError);
- TEncodingType = (etBase64, etQuotedPrintable, etNoEncoding);
- TNormalizer = (nrFirst, nrForce, nrAddText, nrAddAttach, nrAddEmbedded);
- TEmbedMethod = (emContentID, emContentLocation);
- TMailPriority = (mpHighest, mpHigh, mpNormal, mpLow, mpLowest);
- THandshaking = (hsAuto, hsManual);
- TProgressEvent = procedure(Sender: TObject; Total, Current: Integer) of object;
- TEndOfDataEvent = procedure(Sender: TObject; SessionState: TSessionState; Data: String; var ServerResult: Boolean) of object;
- TSocketTalkErrorEvent = procedure(Sender: TObject; SessionState: TSessionState; TalkError: TTalkError) of object;
- TReceiveDataEvent = procedure(Sender: TObject; Sessionstate: TSessionState; Data: String; var ServerResult: Boolean) of object;
- TReceivedField = (reFrom, reBy, reFor, reDate, reNone);
- TReceived = record
- From: String;
- By: String;
- Address: String;
- Date: TDateTime;
- end;
- { TMailPart - A recursive class to handle parts, subparts, and the mail by itself }
- TMailPart = class(TComponent)
- private
- FHeader: TStringList {TMailText};
- FBody: TMemoryStream;
- FDecoded: TMemoryStream;
- FParentBoundary: String;
- FOwnerMessage: TMailMessage2000;
- FSubPartList: TMailPartList;
- FOwnerPart: TMailPart;
- FIsDecoded: Boolean;
- FEmbedded: Boolean;
- function GetAttachInfo: String;
- function GetFileName: String;
- function GetBoundary: String;
- function GetSource: String;
- procedure Fill(Data: PChar; HasHeader: Boolean);
- procedure SetSource(Text: String);
- public
- constructor Create(AOwner: TComponent); override;
- destructor Destroy; override;
- function GetLabelValue(const cLabel: String): String; // Get the value of a label. e.g. Label: value
- function GetLabelParamValue(const cLabel, Param: String): String; // Get the value of a label parameter. e.g. Label: xxx; param=value
- function LabelExists(const cLabel: String): Boolean; // Determine if a label exists
- function LabelParamExists(const cLabel, Param: String): Boolean; // Determine if a label parameter exists
- function Decode: Boolean; // Decode Body stream into Decoded stream and result true if successful
- procedure Encode(const ET: TEncodingType);
- procedure EncodeText; // Encode Decoded stream into Body stream using quoted-printable
- procedure EncodeBinary; // Encode Decoded stream into Body stream using Base64
- procedure SetLabelValue(const cLabel, cValue: String); // Set the value of a label
- procedure SetLabelParamValue(const cLabel, cParam, cValue: String); // Set the value of a label parameter
- procedure Remove; // Delete this mailpart from message
- procedure LoadFromFile(FileName: String); // Load the data from a file
- procedure SaveToFile(FileName: String); // Save the data to a file
- procedure LoadFromStream(Stream: TStream); // Load the data from a stream
- procedure SaveToStream(Stream: TStream); // Save the data to a stream
- property PartSource: String read GetSource write SetSource;
- property Header: TStringList read FHeader; // The header text
- property Body: TMemoryStream read FBody; // The original body
- property Decoded: TMemoryStream read FDecoded; // Stream with the body decoded
- property SubPartList: TMailPartList read FSubPartList; // List of subparts of this mail part
- property FileName: String read GetFileName; // Name of file when this mail part is an attached file
- property AttachInfo: String read GetAttachInfo; // E.g. application/octet-stream
- property OwnerMessage: TMailMessage2000 read FOwnerMessage; // Main message that owns this mail part
- property OwnerPart: TMailPart read FOwnerPart; // Father part of this part (can be the main message too)
- property IsDecoded: Boolean read FIsDecoded; // If this part is decoded
- property Embedded: Boolean read FEmbedded write FEmbedded; // E.g. if is a picture inside HTML text
- end;
- { TMailPartList - Just a collection of TMailPart's }
- TMailPartList = class(TList)
- private
- function Get(const Index: Integer): TMailPart;
- public
- destructor Destroy; override;
- property Items[const Index: Integer]: TMailPart read Get; default;
- end;
- { TMailRecipients - Handling of recipient fields }
- TMailRecipients = class(TObject)
- private
- FMessage: TMailMessage2000;
- FField: String;
- FNames: TStringList;
- FAddresses: TStringList;
- FCheck: Integer;
- function GetName(const Index: Integer): String;
- function GetAddress(const Index: Integer): String;
- function GetCount: Integer;
- procedure SetName(const Index: Integer; const Name: String);
- procedure SetAddress(const Index: Integer; const Address: String);
- function FindName(const Name: String): Integer;
- function FindAddress(const Address: String): Integer;
- function GetAllNames: String;
- function GetAllAddresses: String;
- procedure HeaderToStrings;
- procedure StringsToHeader;
- public
- constructor Create(MailMessage: TMailMessage2000; Field: String); //override;
- destructor Destroy; override;
- procedure Add(const Name, Address: String);
- procedure Replace(const Index: Integer; const Name, Address: String);
- procedure Delete(const Index: Integer);
- procedure SetAll(const Names, Addresses: String);
- procedure AddNamesTo(const Str: TStrings);
- procedure AddAddressesTo(const Str: TStrings);
- procedure Clear;
- property Count: Integer read GetCount;
- property Name[const Index: Integer]: String read GetName write SetName;
- property Address[const Index: Integer]: String read GetAddress write SetAddress;
- property ByName[const Name: String]: Integer read FindName;
- property ByAddress[const Name: String]: Integer read FindAddress;
- property AllNames: String read GetAllNames;
- property AllAddresses: String read GetAllAddresses;
- end;
- { TMailMessage2000 - A descendant of TMailPart with some tools to handle the mail }
- TMailMessage2000 = class(TMailPart)
- private
- FAttachList: TMailPartList;
- FTextPlain: TStringList;
- FTextHTML: TStringList;
- FTextPlainPart: TMailPart;
- FTextHTMLPart: TMailPart;
- FMixedPart: TMailPart;
- FRelatedPart: TMailPart;
- FAlternativePart: TMailPart;
- FTextFather: TMailPart;
- FCharset: String;
- FOnProgress: TProgressEvent;
- FNameCount: Integer;
- FToList: TMailRecipients;
- FCcList: TMailRecipients;
- FBccList: TMailRecipients;
- FTextEncoding: TEncodingType;
- FAttachEncoding: TEncodingType;
- FEmbedMethod: TEmbedMethod;
- FContentLocationBase: String;
- FNeedRebuild: Boolean;
- FNeedNormalize: Boolean;
- FNeedFindParts: Boolean;
- procedure GetSenderData(const Field: String; var Name, Address: String);
- function GetReceivedCount: Integer;
- function GetReceived(const Index: Integer): TReceived;
- function GetAttach(const FileName: String): TMailPart;
- function GetFromName: String;
- function GetFromAddress: String;
- function GetReplyToName: String;
- function GetReplyToAddress: String;
- function GetReceiptName: String;
- function GetReceiptAddress: String;
- function GetPriority: TMailPriority;
- function GetSubject: String;
- function GetDate: TDateTime;
- function GetMessageId: String;
- procedure PutText(Text: String; var Part: TMailPart; Content: String);
- procedure RemoveText(var Part: TMailPart);
- procedure SetSubject(const Subject: String);
- procedure SetDate(const Date: TDateTime);
- procedure SetMessageId(const MessageId: String);
- procedure SetPriority(const Priority: TMailPriority);
- public
- constructor Create(AOwner: TComponent); override;
- destructor Destroy; override;
- procedure SetFrom(const Name, Address: String); // Create/modify the From: field
- procedure SetReplyTo(const Name, Address: String); // Create/modify the Reply-To: field
- procedure SetReceipt(const Name, Address: String); // Create/modify the Return-Receipt field
- procedure FindParts; // Search for the attachments and texts
- procedure Normalize(const Kind: TNormalizer = nrFirst); // Reconstruct message on Mail2000 standards (multipart/mixed)
- procedure RebuildBody; // Build the raw mail body according to mailparts
- procedure Reset; // Clear all stored data in the object
- procedure SetTextPlain(const Text: String); // Create/modify a mailpart for text/plain (doesn't rebuild body)
- procedure SetTextHTML(const Text: String); // Create/modify a mailpart for text/html (doesn't rebuild body)
- procedure RemoveTextPlain; // Remove the text/plain mailpart (doesn't rebuild body)
- procedure RemoveTextHTML; // Remove the text/html mailpart (doesn't rebuild body)
- procedure AttachFile(const FileName: String; const ContentType: String = ''; const IsEmbedded: Boolean = False);
- // Create a mailpart and encode a file on it (doesn't rebuild body)
- procedure AttachString(const Text, FileName: String; const ContentType: String = ''; const IsEmbedded: Boolean = False);
- // Create a mailpart and encode a string on it (doesn't rebuild body)
- procedure AttachStream(const AStream: TStream; const FileName: String; const ContentType: String = ''; const IsEmbedded: Boolean = False);
- // Create a mailpart and encode a stream on it (doesn't rebuild body)
- procedure DetachFile(const FileName: String);
- // Remove attached file from message by name
- procedure DetachFileIndex(const Index: Integer);
- // Remove attached file from message by index of AttachList
- procedure AddHop(const From, By, Aplic, Address: String); // Add a 'Received:' in message header
- property Received[const Index: Integer]: TReceived read GetReceived; // Retrieve the n-th 'Received' header
- property ReceivedCount: Integer read GetReceivedCount; // Count the instances of 'Received' fields (hops)
- property AttachByName[const FileName: String]: TMailPart read GetAttach; // Returns the MailPart of an attachment by filename
- property ToList: TMailRecipients read FToList; // Handling of To: recipients
- property CcList: TMailRecipients read FCcList; // Handling of Cc: recipients
- property BccList: TMailRecipients read FBccList; // Handling of Bcc: recipients
- {$WARNINGS OFF}
- property MessageSource: String read GetSource write SetSource;
- {$WARNINGS ON}
- property FromName: String read GetFromName; // Retrieve the From: name
- property FromAddress: String read GetFromAddress; // Retrieve the From: address
- property ReplyToName: String read GetReplyToName; // Retrieve the Reply-To: name
- property ReplyToAddress: String read GetReplyToAddress; // Retrieve the Reply-To: address
- property ReceiptName: String read GetReceiptName; // Retrieve the Return-Receipt name
- property ReceiptAddress: String read GetReceiptAddress; // Retrieve the Return-Receipt address
- property Subject: String read GetSubject write SetSubject; // Retrieve or set the Subject: string
- property Date: TDateTime read GetDate write SetDate; // Retrieve or set the Date: in TDateTime format
- property MessageId: String read GetMessageId write SetMessageId; // Retrieve or set the Message-Id:
- property Priority: TMailPriority read GetPriority write SetPriority; // Retrieve or set the mail priority
- property AttachList: TMailPartList read FAttachList; // A list of all attached files
- property TextPlain: TStringList read FTextPlain; // A StringList with the text/plain from message
- property TextHTML: TStringList read FTextHTML; // A StringList with the text/html from message
- property TextPlainPart: TMailPart read FTextPlainPart; // The text/plain part
- property TextHTMLPart: TMailPart read FTextHTMLPart; // The text/html part
- property NeedRebuild: Boolean read FNeedRebuild; // True if RebuildBody is needed
- property NeedNormalize: Boolean read FNeedNormalize; // True if message needs to be normalized
- property NeedFindParts: Boolean read FNeedFindParts; // True if message has parts to be searched for
- published
- property Charset: String read FCharSet write FCharset; // Charset to build headers and text
- property TextEncoding: TEncodingType read FTextEncoding write FTextEncoding; // How text will be encoded
- property AttachEncoding: TEncodingType read FAttachEncoding write FAttachEncoding; // How attachments will be encoded
- property EmbedMethod: TEmbedMethod read FEmbedMethod write FEmbedMethod; // Embedded files attachment method
- property ContentLocationBase: String read FContentLocationBase write FContentLocationBase; // Base location for Content-Location embedded files
- property OnProgress: TProgressEvent read FOnProgress write FOnProgress; // Occurs when storing message in memory
- end;
- { TSocketTalk }
- TSocketTalk = class(TComponent)
- private
- FTimeOut: Integer;
- FExpectedEnd: String;
- FLastResponse: String;
- FDataSize: Integer;
- FPacketSize: Integer;
- FTalkError: TTalkError;
- FSessionState: TSessionState;
- FClientSocket: TClientSocket;
- FWaitingServer: Boolean;
- FTimer: TTimer;
- FServerResult: Boolean;
- FOnProgress: TProgressEvent;
- FOnEndOfData: TEndOfDataEvent;
- FOnSocketTalkError: TSocketTalkErrorEvent;
- FOnReceiveData: TReceiveDataEvent;
- FOnDisconnect: TNotifyEvent;
- procedure SocketRead(Sender: TObject; Socket: TCustomWinSocket);
- procedure SocketError(Sender: TObject; Socket: TCustomWinSocket; ErrorEvent: TErrorEvent; var ErrorCode: Integer);
- procedure SocketDisconnect(Sender: TObject; Socket: TCustomWinSocket);
- procedure Timer(Sender: TObject);
- public
- constructor Create(AOwner: TComponent); override;
- destructor Destroy; override;
- procedure Talk(Buffer, EndStr: String; SessionState: TSessionState);
- procedure Cancel;
- procedure ForceState(SessionState: TSessionState);
- procedure WaitServer;
- property LastResponse: String read FLastResponse;
- property DataSize: Integer read FDataSize write FDataSize;
- property PacketSize: Integer read FPacketSize write FPacketSize;
- property TimeOut: Integer read FTimeOut write FTimeOut;
- property TalkError: TTalkError read FTalkError;
- property ClientSocket: TClientSocket read FClientSocket;
- property ServerResult: Boolean read FServerResult;
- property OnEndOfData: TEndOfDataEvent read FOnEndOfData write FOnEndOfData;
- property OnSocketTalkError: TSocketTalkErrorEvent read FOnSocketTalkError write FOnSocketTalkError;
- property OnReceiveData: TReceiveDataEvent read FOnReceiveData write FOnReceiveData;
- property OnProgress: TProgressEvent read FOnProgress write FOnProgress;
- property OnDisconnect: TNotifyEvent read FOnDisconnect write FOnDisconnect;
- end;
- { TPOP2000 }
- TPOP2000 = class(TComponent)
- private
- FMailMessage: TMailMessage2000;
- FSessionMessageCount: Integer;
- FSessionMessageSize: TMessageSize;
- FSessionConnected: Boolean;
- FSessionLogged: Boolean;
- FLastMessage: String;
- FSocketTalk: TSocketTalk;
- FUserName: String;
- FPassword: String;
- FPort: Integer;
- FHost: String;
- FDeleteOnRetrieve: Boolean;
- procedure EndOfData(Sender: TObject; SessionState: TSessionState; Data: String; var ServerResult: Boolean);
- procedure SocketTalkError(Sender: TObject; SessionState: TSessionState; TalkError: TTalkError);
- procedure ReceiveData(Sender: TObject; SessionState: TSessionState; Data: String; var ServerResult: Boolean);
- procedure SocketDisconnect(Sender: TObject);
- function GetTimeOut: Integer;
- procedure SetTimeOut(Value: Integer);
- function GetProgress: TProgressEvent;
- procedure SetProgress(Value: TProgressEvent);
- function GetLastResponse: String;
- function SendCMD(CMD:string ;state:TSessionState):string;
- public
- constructor Create(AOwner: TComponent); override;
- destructor Destroy; override;
- function Connect: Boolean; // Connect to mail server
- function Login: Boolean; // Autenticate to mail server
- function Quit: Boolean; // Logout and disconnect
- procedure Abort; // Force disconnect
- function RetrieveMessageByUIDL(UIDL: String): Boolean;
- function RetrieveMessage(Number: Integer): Boolean; // Retrieve mail number # and put in MailMessage
- function RetrieveHeader(Number: Integer; Lines: Integer = 0): Boolean; // Retrieve header and put in MailMessage
- function DeleteMessage(Number: Integer): Boolean; // Delete mail number #
- function GetUIDL(Number: Integer): String; // Get UIDL from mail number #
- function GetUIDLS(List:TStrings):Boolean;
- property SessionMessageCount: Integer read FSessionMessageCount; // Number of messages found on server
- property SessionMessageSize: TMessageSize read FSessionMessageSize; // Dynamic array with size of the messages
- property SessionConnected: Boolean read FSessionConnected; // True if conencted to server
- property SessionLogged: Boolean read FSessionLogged; // True if autenticated on server
- property LastMessage: String read FLastMessage; // Last integral message text
- property LastResponse: String read GetLastResponse; // Last string received from server
- published
- property UserName: String read FUserName write FUserName; // User name to login on server
- property Password: String read FPassword write FPassword; // Password
- property Port: Integer read FPort write FPort; // Port (usualy 110)
- property Host: String read FHost write FHost; // Host address
- property MailMessage: TMailMessage2000 read FMailMessage write FMailMessage; // Message retrieved
- property TimeOut: Integer read GetTimeOut write SetTimeOut; // Max time to wait for server reply in seconds
- property OnProgress: TProgressEvent read GetProgress write SetProgress; // Occurs when receiving data from server
- property DeleteOnRetrieve: Boolean read FDeleteOnRetrieve write FDeleteOnRetrieve; // If message will be deleted after successful retrieve
- end;
- { TSMTP2000 }
- TSMTP2000 = class(TComponent)
- private
- FMailMessage: TMailMessage2000;
- FSessionConnected: Boolean;
- FSocketTalk: TSocketTalk;
- FPacketSize: Integer;
- FNeedAuthentication: Boolean;
- FHandshaking: THandshaking;
- FUserName: String;
- FPassword: String;
- FPort: Integer;
- FHost: String;
- procedure EndOfData(Sender: TObject; SessionState: TSessionState; Data: String; var ServerResult: Boolean);
- procedure SocketTalkError(Sender: TObject; SessionState: TSessionState; TalkError: TTalkError);
- procedure ReceiveData(Sender: TObject; SessionState: TSessionState; Data: String; var ServerResult: Boolean);
- procedure SocketDisconnect(Sender: TObject);
- function GetTimeOut: Integer;
- procedure SetTimeOut(Value: Integer);
- function GetProgress: TProgressEvent;
- procedure SetProgress(Value: TProgressEvent);
- function GetLastResponse: String;
- public
- constructor Create(AOwner: TComponent); override;
- destructor Destroy; override;
- function Connect: Boolean; // Connect to mail server
- function Helo: Boolean; // Sends a HELO command
- function Ehlo: Boolean; // Sends a EHLO command
- function AuthLogin: Boolean; // Sends a AUTH LOGIN command
- function Login: Boolean; // Sends user name and password
- function Quit: Boolean; // Disconnect
- procedure Abort; // Force disconnect
- function SendMessage: Boolean; // Send MailMessage to server
- function SendMessageTo(const From, Dests: String): Boolean; // Send MailMessage to specified recipients
- function SendStringTo(const Msg, From, Dests: String): Boolean; // Send string to specified recipients
- property SessionConnected: Boolean read FSessionConnected; // True if conencted to server
- property LastResponse: String read GetLastResponse; // Last string received from server
- property NeedAuthentication: Boolean read FNeedAuthentication; // If connected server requests authentication
- published
- property Port: Integer read FPort write FPort; // Port (usualy 25)
- property Host: String read FHost write FHost; // Host address
- property TimeOut: Integer read GetTimeOut write SetTimeOut; // Max time to wait for a response in seconds
- property MailMessage: TMailMessage2000 read FMailMessage write FMailMessage; // Message to send
- property PacketSize: Integer read FPacketSize write FPacketSize; // Size of packets to send to server
- property OnProgress: TProgressEvent read GetProgress write SetProgress; // Occurs when sending data to server
- property Handshaking: THandshaking read FHandshaking write FHandshaking; // How connection will behave
- property UserName: String read FUserName write FUserName; // User name for authentication
- property Password: String read FPassword write FPassword; // Password for authentication
- end;
- procedure Register;
- { Very useful functions ====================================================== }
- function DecodeLine7Bit(Texto: String): String; forward;
- function EncodeLine7Bit(const Texto, Charset: String): String; forward;
- function DecodeQuotedPrintable(const Texto: String): String; forward;
- function EncodeQuotedPrintable(const Texto: String; const HeaderLine: Boolean): String; forward;
- function DecodeUUCODE(Encoded: PChar; Decoded: TMemoryStream): Boolean; forward;
- function DecodeLineUUCODE(const Buffer: String; Decoded: PChar): Integer; forward;
- function DecodeLineBASE64(const Buffer: String; Decoded: PChar): Integer; forward;
- function EncodeBASE64(Encoded: TMemoryStream; Decoded: TMemoryStream): Integer; forward;
- function EncodeBASE64String(const Decoded: String): String;
- function NormalizeLabel(Texto: String): String; forward;
- function LabelValue(cLabel: String): String; forward;
- function WriteLabelValue(cLabel, Value: String): String; forward;
- function LabelParamValue(cLabel, cParam: String): String; forward;
- function WriteLabelParamValue(cLabel, cParam, Value: String): String; forward;
- function GetTimeZoneBias: Double; forward;
- function PadL(const Str: String; const Tam: Integer; const PadStr: String): String; forward;
- function GetMimeType(const FileName: String): String; forward;
- function GetMimeExtension(const MimeType: String): String; forward;
- function GenerateBoundary: String; forward;
- function SearchStringList(Lista: TStringList; const Chave: String; const Occorrence: Integer = 0): Integer; forward;
- procedure DataLine(var Data, Line: String; var nPos: Integer); forward;
- procedure DataLinePChar(const Data: PChar; const TotalLength: Integer; var LinePos, LineLen: Integer; var Line: PChar; var DataEnd: Boolean); forward;
- function IsIPAddress(const SS: String): Boolean; forward;
- function TrimSpace(const S: string): string; forward;
- function TrimLeftSpace(const S: string): string; forward;
- function TrimRightSpace(const S: string): string; forward;
- function MailDateToDelphiDate(const DateStr: String): TDateTime; forward;
- function DelphiDateToMailDate(const Date: TDateTime): String; forward;
- function ValidFileName(FileName: String): String; forward;
- function WrapHeader(Text: String): String; forward;
- function GetToken(const Token: Integer; const Text, Separators, QuoteStart, QuoteEnd: String): String;
- implementation
- const
- _C_T = 'Content-Type';
- _C_D = 'Content-Disposition';
- _C_TE = 'Content-Transfer-Encoding';
- _C_ID = 'Content-ID';
- _C_L = 'Content-Length';
- _C_LC = 'Content-Location';
- _CONT = 'Content-';
- _X_M2 = 'X-Mail2000-';
- _FFR = 'From';
- _FRT = 'Reply-To';
- _M_V = 'Mime-Version';
- _M_ID = 'Message-ID';
- _X_M = 'X-Mailer';
- _XM2A = 'X-Mail2000-Attachment';
- _XPRI = 'X-Priority';
- _DNT = 'Disposition-Notification-To';
- const
- _TXT = 'text/';
- _TEX = 'text';
- _T_P = 'text/plain';
- _T_H = 'text/html';
- _MP = 'multipart/';
- _M_M = 'multipart/mixed';
- _M_A = 'multipart/alternative';
- _M_R = 'multipart/related';
- _M_RP = 'multipart/report';
- _A_OS = 'application/octet-stream';
- _BDRY = 'boundary';
- _ATCH = 'attachment';
- _INLN = 'inline';
- _NAME = 'name';
- _FLNM = 'filename';
- _CSET = 'charset';
- _E_QP = 'quoted-printable';
- _E_UU = 'uucode';
- _E_XU = 'x-uuencode';
- _E_BA = 'base64';
- _E_7B = '7bit';
- _EMBD = 'embedded';
- _UUBG = 'begin 6';
- _UUEN = 'end';
- const
- _MIME_Msg = 'This is a multipart message in mime format.'#13#10;
- _XMailer = 'Mail2000 1.10 http://groups.yahoo.com/group/tmail2000';
- _TXTFN = 'textpart.txt';
- _HTMLFN = 'textpart.htm';
- _CHARSET = 'iso-8859-1';
- _DATAEND1 = #13#10'.'#13#10;
- _DATAEND2 = #13#10'..'#13#10;
- _LINELEN = 72;
- const
- _E_UUCD = 'UUCODE message format error';
- _E_MLPT = '%s: TMailPart must be owned by a TMailMessage2000';
- _E_ATFN = '%s: Attachment filename not found "%s"';
- _E_ATIN = '%s: Attachment index not found';
- _E_MMUN = '%s: MailMessage unassigned';
- _E_MMNR = '%s: MailMessage need rebuild';
- _E_NRTS = '%s: No recipients to send message';
- procedure Register;
- begin
- RegisterComponents('TMail2000', [TPOP2000, TSMTP2000, TMailMessage2000]);
- end;
- // Decode an encoded field e.g. =?iso-8859-1?x?xxxxxx=?=
- function DecodeLine7Bit(Texto: String): String;
- var
- Buffer: PChar;
- Encoding: Char;
- Size: Integer;
- nPos0: Integer;
- nPos1: Integer;
- nPos2: Integer;
- nPos3: Integer;
- Found: Boolean;
- begin
- Result := TrimSpace(Texto);
- repeat
- nPos0 := Pos('=?', Result);
- Found := False;
- if nPos0 > 0 then
- begin
- nPos1 := Pos('?', Copy(Result, nPos0+2, Length(Result)))+nPos0+1;
- nPos2 := Pos('?=', Copy(Result, nPos1+1, Length(Result)))+nPos1;
- nPos3 := Pos('?', Copy(Result, nPos2+1, Length(Result)))+nPos2;
- if nPos3 > nPos2 then
- begin
- if Length(Result) > nPos3 then
- begin
- if Result[nPos3+1] = '=' then
- begin
- nPos2 := nPos3;
- end;
- end;
- end;
- if (nPos1 > nPos0) and (nPos2 > nPos1) then
- begin
- Texto := Copy(Result, nPos1+1, nPos2-nPos1-1);
- if (Length(Texto) >= 2) and (Texto[2] = '?') and (UpCase(Texto[1]) in ['B', 'Q', 'U']) then
- begin
- Encoding := UpCase(Texto[1]);
- end
- else
- begin
- Encoding := 'Q';
- end;
- Texto := Copy(Texto, 3, Length(Texto)-2);
- case Encoding of
- 'B':
- begin
- GetMem(Buffer, Length(Texto));
- Size := DecodeLineBASE64(Texto, Buffer);
- Buffer[Size] := #0;
- Texto := String(Buffer);
- FreeMem(Buffer);
- end;
- 'Q':
- begin
- while Pos('_', Texto) > 0 do
- Texto[Pos('_', Texto)] := #32;
- Texto := DecodeQuotedPrintable(Texto);
- end;
- 'U':
- begin
- GetMem(Buffer, Length(Texto));
- Size := DecodeLineUUCODE(Texto, Buffer);
- Buffer[Size] := #0;
- Texto := String(Buffer);
- end;
- end;
- Result := Copy(Result, 1, nPos0-1)+Texto+Copy(Result,nPos2+2,Length(Result));
- Found := True;
- end;
- end;
- until not Found;
- end;
- // Encode a header field e.g. =?iso-8859-1?x?xxxxxx=?=
- function EncodeLine7Bit(const Texto, Charset: String): String;
- begin
- Result := EncodeQuotedPrintable(Texto, True);
- if Result <> Texto then
- Result := '=?'+Charset+'?Q?'+Result+'?='
- else
- Result := Texto;
- end;
- // Decode a quoted-printable encoded string
- function DecodeQuotedPrintable(const Texto: String): String;
- var
- nPos: Integer;
- nLastPos: Integer;
- //lFound: Boolean;
- begin
- Result := '';
- nPos := 1;
- while nPos <= Length(Texto) do
- begin
- if Texto[nPos] = '=' then
- begin
- if (Length(Texto)-nPos) >= 2 then
- begin
- if (Texto[nPos+1] = #13) and (Texto[nPos+2] = #10) then
- begin
- Inc(nPos, 3);
- end
- else
- begin
- if (Texto[nPos+1] in ['0'..'9', 'A'..'F'])
- and (Texto[nPos+2] in ['0'..'9', 'A'..'F']) then
- begin
- Result := Result + Char(StrToInt('$'+Texto[nPos+1]+Texto[nPos+2]));
- Inc(nPos, 3)
- end
- else
- begin
- Inc(nPos, 3);
- end;
- end;
- end
- else
- begin
- Break;
- end;
- end
- else
- begin
- nLastPos := nPos;
- nPos := Pos('=', Copy(Texto, nLastPos+1, High(Integer)));
- if nPos = 0 then
- nPos := Length(Texto)+1;
- Result := Result + Copy(Texto, nLastPos, nPos);
- Inc(nPos, nLastPos);
- end;
- end;
- end;
- // Encode a string in quoted-printable format
- function EncodeQuotedPrintable(const Texto: String; const HeaderLine: Boolean): String;
- var
- nPos: Integer;
- LineLen: Integer;
- Buffer: TStringList;
- Line2: String;
- begin
- Result := '';
- for nPos := 1 to Length(Texto) do
- begin
- if (Texto[nPos] > #127) or
- (Texto[nPos] = '=') or
- ((Texto[nPos] < #32) and (not (Texto[nPos] in [#9, #10, #13]))) or
- ((nPos < Length(Texto)) and (Texto[nPos] = #13) and (Texto[nPos+1] <> #10)) or
- ((nPos = Length(Texto)) and (Texto[nPos] = #13)) or
- ((nPos > 1) and (Texto[nPos] = #10) and (Texto[nPos-1] <> #13)) or
- ((nPos = 1) and (Texto[nPos] = #10)) or
- ((Texto[nPos] in [#9..#32, #39, '?', '<', '>', '(', ')', '"', '_']) and HeaderLine) then
- begin
- Result := Result + '=' + PadL(Format('%2x', [Ord(Texto[nPos])]), 2, '0');
- end
- else
- begin
- Result := Result + Texto[nPos];
- end;
- // Encode trailing spaces/tabs
- if not HeaderLine then
- begin
- if (Length(Result) > 2)
- and (Result[Length(Result)] = #10)
- and (Result[Length(Result)-1] = #13)
- and (Result[Length(Result)-2] in [#9, #32]) then
- begin
- LineLen := Length(Result)-2;
- Line2 := '';
- while (LineLen >= 1) and (Result[LineLen] in [#9, #32]) do
- begin
- case Result[LineLen] of
- #09: Line2 := '=09'+Line2;
- #32: Line2 := '=20'+Line2;
- end;
- Dec(LineLen);
- end;
- Result := Copy(Result, 1, LineLen)+Line2+#13#10;
- end;
- end;
- end;
- // Insert soft linebreaks
- if not HeaderLine then
- begin
- Buffer := TStringList.Create;
- Buffer.Text := Result;
- nPos := 0;
- while nPos < Buffer.Count do
- begin
- LineLen := Length(Buffer[nPos]);
- while LineLen >= _LINELEN do
- begin
- if (LineLen >= 3)
- and (Buffer[nPos][LineLen] in ['0'..'9', 'A'..'F'])
- and (Buffer[nPos][LineLen-1] in ['0'..'9', 'A'..'F'])
- and (Buffer[nPos][LineLen-2] = '=') then
- Dec(LineLen, 3)
- else
- Dec(LineLen, 1);
- end;
- if LineLen < Length(Buffer[nPos]) then
- begin
- Buffer.Insert(nPos+1, Copy(Buffer[nPos], LineLen+1, Length(Buffer[nPos])));
- Buffer[nPos] := Copy(Buffer[nPos], 1, LineLen)+'=';
- end;
- Inc(nPos);
- end;
- Result := Buffer.Text;
- end;
- end;
- // Decode an UUCODE encoded line
- function DecodeLineUUCODE(const Buffer: String; Decoded: PChar): Integer;
- const
- CHARS_PER_LINE = 45;
- Table: String = '`!"#$%&''()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[]^_';
- var
- A24Bits: array[0..8 * CHARS_PER_LINE] of Boolean;
- i, j, k, b: Word;
- LineLen, ActualLen: Byte;
- function p_ByteFromTable(Ch: Char): Byte;
- var
- ij: Integer;
- begin
- ij := Pos(Ch, Table);
- if (ij > 64) or (ij = 0) then
- begin
- if Ch = #32 then
- Result := 0 else
- raise Exception.Create(_E_UUCD);
- end else
- Result := ij - 1;
- end;
- begin
- if Buffer = '' then
- begin
- Result := 0;
- Exit;
- end;
- try
- LineLen := p_ByteFromTable(Buffer[1]);
- ActualLen := 4 * LineLen div 3;
- FillChar(A24Bits, 8 * CHARS_PER_LINE + 1, 0);
- Result := LineLen;
- if ActualLen <> (4 * CHARS_PER_LINE div 3) then
- ActualLen := Length(Buffer) - 1;
- k := 0;
- for i := 2 to ActualLen + 1 do
- begin
- b := p_ByteFromTable(Buffer[i]);
- for j := 5 downto 0 do
- begin
- A24Bits[k] := b and (1 shl j) > 0;
- Inc(k);
- end;
- end;
- k := 0;
- for i := 1 to CHARS_PER_LINE do
- begin
- b := 0;
- for j := 7 downto 0 do
- begin
- if A24Bits[k] then b := b or (1 shl j);
- Inc(k);
- end;
- Decoded[i-1] := Char(b);
- end;
- except
- Result := 0;
- end;
- end;
- // Decode an UUCODE text
- function DecodeUUCODE(Encoded: PChar; Decoded: TMemoryStream): Boolean;
- var
- nTL, nPos, nLen: Integer;
- Line: PChar;
- LineDec: array[0..79] of Char;
- LineLen: Integer;
- DataEnd: Boolean;
- begin
- Decoded.Clear;
- DataEnd := False;
- nPos := -1;
- nTL := StrLen(Encoded);
- DataLinePChar(Encoded, nTL, nPos, nLen, Line, DataEnd);
- while not DataEnd do
- begin
- if nLen > 0 then
- begin
- LineLen := DecodeLineUUCODE(String(Line), LineDec);
- if LineLen > 0 then
- Decoded.Write(LineDec[0], LineLen);
- end;
- DataLinePChar(Encoded, nTL, nPos, nLen, Line, DataEnd);
- end;
- Result := True;
- end;
- // Decode a BASE64 encoded line
- function DecodeLineBASE64(const Buffer: String; Decoded: PChar): Integer;
- var
- A1: array[1..4] of Byte;
- B1: array[1..3] of Byte;
- I, J: Integer;
- BytePtr, RealBytes: Integer;
- begin
- BytePtr := 0;
- Result := 0;
- for J := 1 to Length(Buffer) do
- begin
- Inc(BytePtr);
- case Buffer[J] of
- 'A'..'Z': A1[BytePtr] := Ord(Buffer[J])-65;
- 'a'..'z': A1[BytePtr] := Ord(Buffer[J])-71;
- '0'..'9': A1[BytePtr] := Ord(Buffer[J])+4;
- '+': A1[BytePtr] := 62;
- '/': A1[BytePtr] := 63;
- '=': A1[BytePtr] := 64;
- end;
- if BytePtr = 4 then
- begin
- BytePtr := 0;
- RealBytes := 3;
- if A1[1] = 64 then RealBytes:=0;
- if A1[3] = 64 then
- begin
- A1[3] := 0;
- A1[4] := 0;
- RealBytes := 1;
- end;
- if A1[4] = 64 then
- begin
- A1[4] := 0;
- RealBytes := 2;
- end;
- B1[1] := A1[1]*4 + (A1[2] div 16);
- B1[2] := (A1[2] mod 16)*16+(A1[3] div 4);
- B1[3] := (A1[3] mod 4)*64 + A1[4];
- for I := 1 to RealBytes do
- begin
- Decoded[Result+I-1] := Chr(B1[I]);
- end;
- Inc(Result, RealBytes);
- end;
- end;
- end;
- // Padronize header labels; remove double spaces, decode quoted text, lower the cases, indentify mail addresses
- function NormalizeLabel(Texto: String): String;
- var
- Quote: Boolean;
- Quoted: String;
- Loop: Integer;
- lLabel: Boolean;
- sLabel: String;
- Value: String;
- begin
- Quote := False;
- lLabel := True;
- Value := '';
- sLabel := '';
- for Loop := 1 to Length(Texto) do
- begin
- if (Texto[Loop] = '"') and (not lLabel) then
- begin
- Quote := not Quote;
- if Quote then
- begin
- Quoted := '';
- end
- else
- begin
- Value := Value + Quoted;
- end;
- end;
- if not Quote then
- begin
- if lLabel then
- begin
- if (sLabel = '') or (sLabel[Length(sLabel)] = '-') then
- sLabel := sLabel + UpCase(Texto[Loop])
- else
- if (Copy(sLabel, Length(sLabel)-1, 2) = '-I') and (UpCase(Texto[Loop]) = 'D') and
- (Loop < Length(Texto)) and (Texto[Loop+1] = ':') then
- sLabel := sLabel + 'D'
- else
- sLabel := sLabel + LowerCase(Texto[Loop]);
- if Texto[Loop] = ':' then
- begin
- lLabel := False;
- Value := '';
- end;
- end
- else
- begin
- if Texto[Loop] = #32 then
- begin
- Value := TrimRightSpace(Value) + #32;
- end
- else
- begin
- Value := Value + Texto[Loop];
- end;
- end;
- end
- else
- begin
- Quoted := Quoted + Texto[Loop];
- end;
- end;
- Result := TrimSpace(sLabel)+' '+TrimSpace(Value);
- end;
- // Return the value of a label; e.g. Label: value
- function LabelValue(cLabel: String): String;
- var
- Loop: Integer;
- Quote: Boolean;
- Value: Boolean;
- Ins: Boolean;
- begin
- Quote := False;
- Value := False;
- Result := '';
- for Loop := 1 to Length(cLabel) do
- begin
- Ins := True;
- if cLabel[Loop] = '"' then
- begin
- Quote := not Quote;
- // Ins := False;
- end;
- if not Quote then
- begin
- if (cLabel[Loop] = ':') and (not Value) then
- begin
- Value := True;
- Ins := False;
- end
- else
- begin
- if (cLabel[Loop] = ';') and Value then
- begin
- Break;
- end;
- end;
- end;
- if Ins and Value then
- begin
- Result := Result + cLabel[Loop];
- end;
- end;
- Result := TrimSpace(Result);
- if (Copy(Result, 1, 1) = '"') and (Copy(Result, Length(Result), 1) = '"') then
- Result := Copy(Result, 2, Length(Result)-2);
- end;
- // Set the value of a label;
- function WriteLabelValue(cLabel, Value: String): String;
- var
- Loop: Integer;
- Quote: Boolean;
- ValPos, ValLen: Integer;
- begin
- Quote := False;
- ValPos := 0;
- ValLen := -1;
- for Loop := 1 to Length(cLabel) do
- begin
- if cLabel[Loop] = '"' then
- begin
- Quote := not Quote;
- end;
- if not Quote then
- begin
- if (cLabel[Loop] = ':') and (ValPos = 0) then
- begin
- ValPos := Loop+1;
- end
- else
- begin
- if (cLabel[Loop] = ';') and (ValPos > 0) then
- begin
- ValLen := Loop - ValPos;
- Break;
- end;
- end;
- end;
- end;
- Result := cLabel;
- if (ValLen < 0) and (ValPos > 0) then
- ValLen := Length(cLabel) - ValPos + 1;
- if ValPos > 0 then
- begin
- Delete(Result, ValPos, ValLen);
- Insert(' '+TrimSpace(Value), Result, ValPos);
- end;
- end;
- // Return the value of a label parameter; e.g. Label: xxx; param=value
- function LabelParamValue(cLabel, cParam: String): String;
- var
- Loop: Integer;
- Quote: Boolean;
- Value: Boolean;
- Params: Boolean;
- ParamValue: Boolean;
- Ins: Boolean;
- Param: String;
- begin
- Quote := False;
- Value := False;
- Params := False;
- ParamValue := False;
- Param := '';
- Result := '';
- cLabel := TrimSpace(cLabel);
- if Copy(cLabel, Length(cLabel), 1) <> ';' then cLabel := cLabel + ';';
- for Loop := 1 to Length(cLabel) do
- begin
- Ins := True;
- if cLabel[Loop] = '"' then
- begin
- Quote := not Quote;
- // Ins := False;
- end;
- if not Quote then
- begin
- if (cLabel[Loop] = ':') and (not Value) and (not Params) then
- begin
- Value := True;
- Params := False;
- ParamValue := False;
- Ins := False;
- end
- else
- begin
- if (cLabel[Loop] = ';') and (Value or Params) then
- begin
- Params := True;
- Value := False;
- ParamValue := False;
- Param := '';
- Ins := False;
- end
- else
- begin
- if (cLabel[Loop] = '=') and Params then
- begin
- ParamValue := UpperCase(TrimSpace(Param)) = UpperCase(TrimSpace(cParam));
- Ins := False;
- Param := '';
- end;
- end;
- end;
- end;
- if Ins and ParamValue then
- begin
- Result := Result + cLabel[Loop];
- end;
- if Ins and (not ParamValue) and Params then
- begin
- Param := Param + cLabel[Loop];
- end;
- end;
- Result := TrimSpace(Result);
- if (Copy(Result, 1, 1) = '"') and (Copy(Result, Length(Result), 1) = '"') then
- Result := Copy(Result, 2, Length(Result)-2);
- end;
- // Set the value of a label parameter;
- function WriteLabelParamValue(cLabel, cParam, Value: String): String;
- var
- Loop: Integer;
- Quote: Boolean;
- LabelValue: Boolean;
- Params: Boolean;
- ValPos, ValLen: Integer;
- Ins: Boolean;
- Param: String;
- begin
- Quote := False;
- LabelValue := False;
- Params := False;
- ValPos := 0;
- ValLen := -1;
- Param := '';
- Result := '';
- cLabel := TrimSpace(cLabel);
- if cLabel[Length(cLabel)] <> ';' then
- cLabel := cLabel + ';';
- for Loop := 1 to Length(cLabel) do
- begin
- Ins := True;
- if cLabel[Loop] = '"' then
- begin
- Quote := not Quote;
- // Ins := False;
- end;
- if not Quote then
- begin
- if (cLabel[Loop] = ':') and (not LabelValue) and (not Params) then
- begin
- LabelValue := True;
- Params := False;
- ValPos := 0;
- ValLen := 0;
- Ins := False;
- end
- else
- begin
- if (cLabel[Loop] = ';') and (LabelValue or Params) then
- begin
- if Params and (ValPos > 0) then
- begin
- ValLen := Loop - ValPos;
- Break;
- end;
- Params := True;
- LabelValue := False;
- Param := '';
- Ins := False;
- end
- else
- begin
- if (cLabel[Loop] = '=') and Params then
- begin
- if UpperCase(TrimSpace(Param)) = UpperCase(TrimSpace(cParam)) then
- begin
- ValPos := Loop+1;
- ValLen := 0;
- end;
- Ins := False;
- Param := '';
- end;
- end;
- end;
- end;
- if Ins and (ValPos = 0) and Params then
- begin
- Param := Param + cLabel[Loop];
- end;
- end;
- Result := cLabel;
- if Result[Length(Result)] = ';' then
- Delete(Result, Length(Result), 1);
- if ValPos = 0 then
- begin
- Result := TrimSpace(Result) + '; ' + TrimSpace(cParam) + '=' + TrimSpace(Value);
- end
- else
- begin
- if (ValLen < 0) and (ValPos > 0) then
- ValLen := Length(cLabel) - ValPos + 1;
- Delete(Result, ValPos, ValLen);
- Insert(TrimSpace(Value), Result, ValPos);
- end;
- end;
- // Return the Timezone adjust in days
- function GetTimeZoneBias: Double;
- var
- TzInfo: TTimeZoneInformation;
- begin
- case GetTimeZoneInformation(TzInfo) of
- 1: Result := - (TzInfo.StandardBias + TzInfo.Bias) / (24*60);
- 2: Result := - (TzInfo.DaylightBias + TzInfo.Bias) / (24*60);
- else Result := - TzInfo.Bias / (24*60);
- end;
- end;
- // Fills left of string with char
- function PadL(const Str: String; const Tam: Integer; const PadStr: String): String;
- var
- TempStr: String;
- begin
- TempStr := TrimLeftSpace(Str);
- if Length(TempStr) <= Tam then
- begin
- while Length(TempStr) < Tam do
- TempStr := PadStr + TempStr;
- end
- else
- begin
- TempStr := Copy(TempStr, Length(TempStr) - Tam + 1, Tam);
- end;
- Result := TempStr;
- end;
- // Get mime type of a file extension
- function GetMimeType(const FileName: String): String;
- var
- Key: string;
- begin
- Result := '';
- with TRegistry.Create do
- try
- RootKey := HKEY_CLASSES_ROOT;
- Key := ExtractFileExt(FileName);
- if KeyExists(Key) then
- begin
- OpenKey(Key, False);
- Result := ReadString('Content Type');
- CloseKey;
- end;
- finally
- if Result = '' then
- Result := _A_OS;
- Free;
- end;
- end;
- // Get file extension of a mime type
- function GetMimeExtension(const MimeType: String): String;
- var
- Key: string;
- begin
- Result := '';
- with TRegistry.Create do
- try
- RootKey := HKEY_CLASSES_ROOT;
- if OpenKey('MIMEDatabaseContent Type', False) then
- begin
- Key := MimeType;
- if KeyExists(Key) then
- begin
- OpenKey(Key,false);
- Result := ReadString('Extension');
- CloseKey;
- end;
- end;
- finally
- Free;
- end;
- end;
- // Generate a random boundary
- function GenerateBoundary: String;
- begin
- Result := _BDRY + Format('%8.8x', [Random($FFFFFFFF)]);
- end;
- // Encode in base64
- function EncodeBASE64(Encoded: TMemoryStream {TMailText}; Decoded: TMemoryStream): Integer;
- const
- _Code64: String[64] =
- ('ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/');
- var
- I: LongInt;
- B: array[0..2279] of Byte;
- J, K, L, M, Quads: Integer;
- Stream: string[76];
- EncLine: String;
- begin
- Encoded.Clear;
- Stream := '';
- Quads := 0;
- J := Decoded.Size div 2280;
- Decoded.Position := 0;
- for I := 1 to J do
- begin
- Decoded.Read(B, 2280);
- for M := 0 to 39 do
- begin
- for K := 0 to 18 do
- begin
- L:= 57*M + 3*K;
- Stream[Quads+1] := _Code64[(B[L] div 4)+1];
- Stream[Quads+2] := _Code64[(B[L] mod 4)*16 + (B[L+1] div 16)+1];
- Stream[Quads+3] := _Code64[(B[L+1] mod 16)*4 + (B[L+2] div 64)+1];
- Stream[Quads+4] := _Code64[B[L+2] mod 64+1];
- Inc(Quads, 4);
- if Quads = 76 then
- begin
- Stream[0] := #76;
- EncLine := Stream+#13#10;
- Encoded.Write(EncLine[1], Length(EncLine));
- Quads := 0;
- end;
- end;
- end;
- end;
- J := (Decoded.Size mod 2280) div 3;
- for I := 1 to J do
- begin
- Decoded.Read(B, 3);
- Stream[Quads+1] := _Code64[(B[0] div 4)+1];
- Stream[Quads+2] := _Code64[(B[0] mod 4)*16 + (B[1] div 16)+1];
- Stream[Quads+3] := _Code64[(B[1] mod 16)*4 + (B[2] div 64)+1];
- Stream[Quads+4] := _Code64[B[2] mod 64+1];
- Inc(Quads, 4);
- if Quads = 76 then
- begin
- Stream[0] := #76;
- EncLine := Stream+#13#10;
- Encoded.Write(EncLine[1], Length(EncLine));
- Quads := 0;
- end;
- end;
- if (Decoded.Size mod 3) = 2 then
- begin
- Decoded.Read(B, 2);
- Stream[Quads+1] := _Code64[(B[0] div 4)+1];
- Stream[Quads+2] := _Code64[(B[0] mod 4)*16 + (B[1] div 16)+1];
- Stream[Quads+3] := _Code64[(B[1] mod 16)*4 + 1];
- Stream[Quads+4] := '=';
- Inc(Quads, 4);
- end;
- if (Decoded.Size mod 3) = 1 then
- begin
- Decoded.Read(B, 1);
- Stream[Quads+1] := _Code64[(B[0] div 4)+1];
- Stream[Quads+2] := _Code64[(B[0] mod 4)*16 + 1];
- Stream[Quads+3] := '=';
- Stream[Quads+4] := '=';
- Inc(Quads, 4);
- end;
- Stream[0] := Chr(Quads);
- if Quads > 0 then
- begin
- EncLine := Stream+#13#10;
- Encoded.Write(EncLine[1], Length(EncLine));
- end;
- Result := Encoded.Size;
- end;
- // Encode string to base64
- function EncodeBASE64String(const Decoded: String): String;
- var
- S1, S2: TMemoryStream;
- slTemp: TStringList;
- sTemp: String;
- begin
- S1 := TMemoryStream.Create;
- S2 := TMemoryStream.Create;
- slTemp := TStringList.Create;
- slTemp.Text := Decoded;
- slTemp.SaveToStream(S1);
- try
- S1.SetSize(S1.Size - 2 );
- S1.Position := 0;
- EncodeBASE64(S2, S1);
- S2.Position := 0;
- slTemp.LoadFromStream(S2);
- sTemp := slTemp.Strings[0];
- Result := sTemp;
- finally
- slTemp.Free;
- S1.Free;
- S2.Free;
- end;
- end;
- // Search in a StringList
- function SearchStringList(Lista: TStringList; const Chave: String; const Occorrence: Integer = 0): Integer;
- var
- nPos: Integer;
- lAchou: Boolean;
- Casas: Integer;
- Temp: String;
- nOccor: Integer;
- begin
- Casas := Length(Chave);
- lAchou := False;
- nPos := 0;
- nOccor := 0;
- try
- if Lista <> nil then
- begin
- while (not lAchou) and (nPos < Lista.Count) do
- begin
- Temp := Lista[nPos];
- if UpperCase(Copy(Temp, 1, Casas)) = UpperCase(Chave) then
- begin
- if nOccor = Occorrence then
- begin
- lAchou := True;
- end
- else
- begin
- Inc(nOccor);
- end;
- end;
- if not lAchou then
- Inc(nPos);
- end;
- end;
- finally
- if lAchou then
- result := nPos
- else
- result := -1;
- end;
- end;
- // Search lines into a string
- procedure DataLine(var Data, Line: String; var nPos: Integer);
- begin
- Line := '';
- while True do
- begin
- Line := Line + Data[nPos];
- Inc(nPos);
- if nPos > Length(Data) then
- begin
- nPos := -1;
- Break;
- end
- else
- begin
- if Length(Line) >= 2 then
- begin
- if (Line[Length(Line)-1] = #13) and (Line[Length(Line)] = #10) then
- begin
- Break;
- end;
- end;
- end;
- end;
- end;
- // Search lines into a string
- // I need to do in this confusing way in order to improve performance
- procedure DataLinePChar(const Data: PChar; const TotalLength: Integer; var LinePos, LineLen: Integer; var Line: PChar; var DataEnd: Boolean); assembler;
- begin
- if LinePos >= 0 then
- begin
- Data[LinePos+LineLen] := #13;
- LinePos := LinePos+LineLen+2;
- LineLen := 0;
- end
- else
- begin
- LinePos := 0;
- LineLen := 0;
- end;
- while (LinePos+LineLen) < TotalLength do
- begin
- if Data[LinePos+LineLen] = #13 then
- begin
- if (LinePos+LineLen+1) < TotalLength then
- begin
- if Data[LinePos+LineLen+1] = #10 then
- begin
- Data[LinePos+LineLen] := #0;
- Line := @Data[LinePos];
- Exit;
- end;
- end;
- end;
- Inc(LineLen);
- end;
- if LinePos < TotalLength then
- Line := @Data[LinePos]
- else
- DataEnd := True;
- end;
- // Determine if string is a numeric IP or not (Thanks to Hou Yg yghou@yahoo.com)
- function IsIPAddress(const SS: String): Boolean;
- var
- Loop: Integer;
- P: String;
- begin
- Result := True;
- P := '';
- for Loop := 1 to Length(SS)+1 do
- begin
- if (Loop > Length(SS)) or (SS[Loop] = '.') then
- begin
- if StrToIntDef(P, -1) < 0 then
- begin
- Result := False;
- Break;
- end;
- P := '';
- end
- else
- begin
- P := P + SS[Loop];
- end;
- end;
- end;
- // Remove leading and trailing spaces from string
- // Thanks to Yunarso Anang (yasx@hotmail.com)
- function TrimSpace(const S: string): string;
- var
- I, L: Integer;
- begin
- L := Length(S);
- I := 1;
- while (I <= L) and (S[I] in [#9, #32]) do
- Inc(I);
- if I > L then Result := '' else
- begin
- while S[L] = ' ' do
- Dec(L);
- Result := Copy(S, I, L - I + 1);
- end;
- end;
- // Remove left spaces from string
- // Thanks to Yunarso Anang (yasx@hotmail.com)
- function TrimLeftSpace(const S: string): string;
- var
- I, L: Integer;
- begin
- L := Length(S);
- I := 1;
- while (I <= L) and (S[I] in [#9, #32]) do
- Inc(I);
- Result := Copy(S, I, Maxint);
- end;
- // Remove right spaces from string
- // Thanks to Yunarso Anang (yasx@hotmail.com)
- function TrimRightSpace(const S: string): string;
- var
- I: Integer;
- begin
- I := Length(S);
- while (I > 0) and (S[I] in [#9, #32]) do
- Dec(I);
- Result := Copy(S, 1, I);
- end;
- // Convert date from message to Delphi format
- // Returns zero in case of error
- function MailDateToDelphiDate(const DateStr: String): TDateTime;
- const
- Months: String = 'Jan,Feb,Mar,Apr,May,Jun,Jul,Aug,Sep,Oct,Nov,Dec,';
- var
- Field, Loop: Integer;
- Hour, Min, Sec, Year, Month, Day: Double;
- sDate, sHour, sMin, sSec, sYear, sMonth, sDay, sTZ: String;
- HTZM, MTZM: Word;
- STZM: Integer;
- TZM: Double;
- Final: Double;
- begin
- sHour := '';
- sMin := '';
- sSec := '';
- sYear := '';
- sMonth := '';
- sDay := '';
- sTZ := '';
- sDate := Trim(DateStr);
- if sDate <> '' then
- begin
- if sDate[1] in ['0'..'9'] then
- Field := 1
- else
- Field := 0;
- for Loop := 1 to Length(sDate) do
- begin
- if sDate[Loop] in [#32, ':', '/'] then
- begin
- Inc(Field);
- if (Field = 6) and (sDate[Loop] = #32) then Field := 7;
- end
- else
- begin
- case Field of
- 1: sDay := sDay + sDate[Loop];
- 2: sMonth := sMonth + sDate[Loop];
- 3: sYear := sYear + sDate[Loop];
- 4: sHour := sHour + sDate[Loop];
- 5: sMin := sMin + sDate[Loop];
- 6: sSec := sSec + sDate[Loop];
- 7: sTZ := sTZ + sDate[Loop];
- end;
- end;
- end;
- Hour := StrToIntDef(sHour, 0);
- Min := StrToIntDef(sMin, 0);
- Sec := StrToIntDef(sSec, 0);
- Year := StrToIntDef(sYear, 0);
- Day := StrToIntDef(sDay, 0);
- if sMonth[1] in ['0'..'9'] then
- Month := StrToIntDef(sMonth, 0)
- else
- Month := (Pos(sMonth, Months)-1) div 4 + 1;
- if Year < 100 then
- begin
- if Year < 50 then
- Year := 2000 + Year
- else
- Year := 1900 + Year;
- end;
- if (Year = 0) or (Month = 0) or (Year = 0) then
- begin
- Result := 0;
- end
- else
- begin
- if (sTZ = 'GMT') or (Length(Trim(sTZ)) <> 5) then
- begin
- STZM := 1;
- HTZM := 0;
- MTZM := 0;
- end
- else
- begin
- STZM := StrToIntDef(Copy(sTZ, 1, 1)+'1', 1);
- HTZM := StrToIntDef(Copy(sTZ, 2, 2), 0);
- MTZM := StrToIntDef(Copy(sTZ, 4, 2), 0);
- end;
- try
- TZM := EncodeTime(HTZM, MTZM, 0, 0)*STZM;
- Final := EncodeDate(Trunc(Year), Trunc(Month), Trunc(Day));
- Final := Final + Hour*(1/24) + Min*(1/24/60) + Sec*(1/24/60/60);
- Final := Final - TZM + GetTimeZoneBias;
- Result := Final;
- except
- Result := 0;
- end;
- end;
- end
- else
- begin
- Result := 0;
- end;
- end;
- // Convert numeric date to mail format
- function DelphiDateToMailDate(const Date: TDateTime): String;
- const
- Months: String = 'Jan,Feb,Mar,Apr,May,Jun,Jul,Aug,Sep,Oct,Nov,Dec,';
- Weeks: String = 'Sun,Mon,Tue,Wed,Thu,Fri,Sat,';
- var
- TZH: Double;
- DateStr: String;
- TZStr: String;
- Day, Month, Year: Word;
- begin
- TZH := GetTimeZoneBias;
- DecodeDate(Date, Year, Month, Day);
- if TZH < 0 then
- begin
- TZStr := '-'+FormatDateTime('hhmm', Abs(TZH));
- end
- else
- begin
- if TZH = 0 then
- begin
- TZStr := 'GMT'
- end
- else
- begin
- TZStr := '+'+FormatDateTime('hhmm', Abs(TZH));
- end;
- end;
- DateStr := Copy(Weeks, (DayOfWeek(Date)-1)*4+1, 3)+',';
- DateStr := DateStr + FormatDateTime(' dd ', Date);
- DateStr := DateStr + Copy(Months, (Month-1)*4+1, 3);
- DateStr := DateStr + FormatDateTime(' yyyy hh:nn:ss ', Date) + TZStr;
- Result := DateStr;
- end;
- // To make sure that a file name (without path!) is valid
- function ValidFileName(FileName: String): String;
- const
- InvChars: String = ':/*?"<>|'#39;
- var
- Loop: Integer;
- begin
- FileName := Copy(TrimSpace(FileName), 1, 254);
- Result := '';
- for Loop := 1 to Length(FileName) do
- begin
- if (Ord(FileName[Loop]) < 32) or (Pos(FileName[Loop], InvChars) > 0) then
- Result := Result + '_'
- else
- Result := Result + FileName[Loop];
- end;
- end;
- // Wrap an entire message header
- function WrapHeader(Text: String): String;
- var
- Line: String;
- nPos: Integer;
- fPos: Integer;
- Quote: Char;
- Ok: Boolean;
- begin
- Result := '';
- Text := AdjustLineBreaks(Text);
- while Copy(Text, Length(Text)-1, 2) = #13#10 do
- Delete(Text, Length(Text)-1, 2);
- while Text <> '' do
- begin
- nPos := Pos(#13#10, Text);
- if nPos > 0 then
- begin
- Line := Copy(Text, 1, nPos-1);
- Text := Copy(Text, nPos+2, Length(Text));
- end
- else
- begin
- Line := Text;
- Text := '';
- end;
- if Length(Line) <= _LINELEN then
- begin
- Result := Result + Line + #13#10;
- end
- else
- begin
- nPos := Length(Line);
- Quote := #0;
- Ok := False;
- if Line[1] <> #9 then
- fPos := Pos(':'#32, Line)+2
- else
- fPos := _LINELEN div 2;
- while nPos >= fPos do
- begin
- if (Quote = #0) and (Line[nPos] in [#39, '"']) then
- Quote := Line[nPos]
- else
- if (Quote <> #0) and (Line[nPos] = Quote) then
- Quote := #0;
- if (Quote = #0) and (nPos <= _LINELEN) and (Line[nPos] in [#32, ',', ';']) then
- begin
- Ok := True;
- Break;
- end;
- Dec(nPos);
- end;
- if Ok then
- begin
- if Line[nPos] = #32 then
- Result := Result + Copy(Line, 1, nPos-1) + #13#10#9
- else
- Result := Result + Copy(Line, 1, nPos) + #13#10#9;
- Text := Copy(Line, nPos+1, Length(Line)) + #13#10 + Text;
- end
- else
- begin
- Result := Result + Line + #13#10;
- end;
- end;
- end;
- end;
- // Parse text into tokens
- function GetToken(const Token: Integer; const Text, Separators, QuoteStart, QuoteEnd: String): String;
- var
- Quote: Integer;
- Loop: Integer;
- CountItem: Integer;
- nPos: Integer;
- EndQuote: Char;
- Jump: Boolean;
- begin
- Result := '';
- Quote := 0;
- CountItem := 0;
- Jump := False;
- EndQuote := #0;
- for Loop := 1 to Length(Text) do
- begin
- nPos := Pos(Text[Loop], QuoteStart);
- if nPos > 0 then
- begin
- Inc(Quote);
- EndQuote := QuoteEnd[nPos];
- end
- else
- begin
- if (Quote > 0) and (Text[Loop] = EndQuote) then
- begin
- Dec(Quote);
- end
- else
- begin
- if (Quote = 0) and (Pos(Text[Loop], Separators) > 0) then
- begin
- Inc(CountItem);
- Jump := True;
- end;
- end;
- end;
- if (Quote = 0) and (not Jump) and (CountItem = Token) then
- begin
- Result := Result + Text[Loop];
- end;
- Jump := False;
- end;
- end;
- { TMailPart ================================================================== }
- // Initialize MailPart
- constructor TMailPart.Create(AOwner: TComponent);
- begin
- inherited Create(AOwner);
- FHeader := TStringList.Create;
- FBody := TMemoryStream.Create;
- FDecoded := TMemoryStream.Create;
- FSubPartList := TMailPartList.Create;
- FOwnerPart := nil;
- FOwnerMessage := nil;
- FEmbedded := False;
- end;
- // Finalize MailPart
- destructor TMailPart.Destroy;
- var
- Loop: Integer;
- begin
- for Loop := 0 to FSubPartList.Count-1 do
- FSubPartList.Items[Loop].Destroy;
- FHeader.Free;
- FBody.Free;
- FDecoded.Free;
- FSubPartList.Free;
- inherited Destroy;
- end;
- // Return the value of a label from the header like "To", "Subject"
- function TMailPart.GetLabelValue(const cLabel: String): String;
- var
- Loop: Integer;
- begin
- Result := '';
- Loop := SearchStringList(FHeader, cLabel+':');
- if Loop >= 0 then
- Result := TrimSpace(LabelValue(FHeader[Loop]));
- if Length(Result) > 2 then
- begin
- if (Result[1] in ['"', #39]) and
- (Result[Length(Result)] in ['"', #39]) then
- Result := Copy(Result, 2, Length(Result)-2);
- end;
- end;
- // Return de value of a parameter of a value from the header
- function TMailPart.GetLabelParamValue(const cLabel, Param: String): String;
- var
- Loop: Integer;
- begin
- Result := '';
- Loop := SearchStringList(FHeader, cLabel+':');
- if Loop >= 0 then
- Result := TrimSpace(LabelParamValue(FHeader[Loop], Param));
- if Length(Result) > 2 then
- begin
- if (Result[1] in ['"', #39]) and
- (Result[Length(Result)] in ['"', #39]) then
- Result := Copy(Result, 2, Length(Result)-2);
- end;
- end;
- // Set the value of a label
- procedure TMailPart.SetLabelValue(const cLabel, cValue: String);
- var
- Loop: Integer;
- begin
- Loop := SearchStringList(FHeader, cLabel+':');
- if cValue <> '' then
- begin
- if Loop < 0 then
- begin
- FHeader.Add(cLabel+': ');
- Loop := FHeader.Count-1;
- end;
- FHeader[Loop] := WriteLabelValue(FHeader[Loop], cValue);
- end
- else
- begin
- if Loop >= 0 then
- begin
- FHeader.Delete(Loop);
- end;
- end;
- end;
- // Set the value of a label parameter
- procedure TMailPart.SetLabelParamValue(const cLabel, cParam, cValue: String);
- var
- Loop: Integer;
- begin
- Loop := SearchStringList(FHeader, cLabel+':');
- if Loop < 0 then
- begin
- FHeader.Add(cLabel+': ');
- Loop := FHeader.Count-1;
- end;
- FHeader[Loop] := WriteLabelParamValue(FHeader[Loop], cParam, cValue);
- end;
- // Look for a label in the header
- function TMailPart.LabelExists(const cLabel: String): Boolean;
- begin
- Result := SearchStringList(FHeader, cLabel+':') >= 0;
- end;
- // Look for a parameter in a label in the header
- function TMailPart.LabelParamExists(const cLabel, Param: String): Boolean;
- var
- Loop: Integer;
- begin
- Result := False;
- Loop := SearchStringList(FHeader, cLabel+':');
- if Loop >= 0 then
- Result := TrimSpace(LabelParamValue(FHeader[Loop], Param)) <> '';
- end;
- // Divide header and body; normalize header;
- procedure TMailPart.Fill(Data: PChar; HasHeader: Boolean);
- const
- CRLF: array[0..2] of Char = (#13, #10, #0);
- var
- Loop: Integer;
- BoundStart: array[0..99] of Char;
- BoundEnd: array[0..99] of Char;
- InBound: Boolean;
- IsBoundStart: Boolean;
- IsBoundEnd: Boolean;
- BoundStartLen: Integer;
- BoundEndLen: Integer;
- PartText: PChar;
- DataEnd: Boolean;
- MultPart: Boolean;
- NoParts: Boolean;
- InUUCode: Boolean;
- UUFile, UUBound: String;
- Part: TMailPart;
- nPos: Integer;
- nLen: Integer;
- nTL: Integer;
- nSPos: Integer;
- Line: PChar;
- SChar: Char;
- begin
- if (FOwnerMessage = nil) or (not (FOwnerMessage is TMailMessage2000)) then
- begin
- Exception.CreateFmt(_E_MLPT, [Self.Name]);
- Exit;
- end;
- for Loop := 0 to FSubPartList.Count-1 do
- FSubPartList.Items[Loop].Destroy;
- FHeader.Clear;
- FBody.Clear;
- FDecoded.Clear;
- FSubPartList.Clear;
- FIsDecoded := False;
- FEmbedded := False;
- FOwnerMessage.FNeedRebuild := True;
- FOwnerMessage.FNeedNormalize := True;
- FOwnerMessage.FNeedFindParts := True;
- nPos := -1;
- DataEnd := False;
- nTL := StrLen(Data);
- nSPos := nTL+1;
- if (Self is TMailMessage2000) and Assigned(FOwnerMessage.FOnProgress) then
- begin
- FOwnerMessage.FOnProgress(Self, nTL, 0);
- Application.ProcessMessages;
- end;
- if HasHeader then
- begin
- // Get Header
- DataLinePChar(Data, nTL, nPos, nLen, Line, DataEnd);
- while not DataEnd do
- begin
- if nLen = 0 then
- begin
- Break;
- end
- else
- begin
- if (Line[0] in [#9, #32]) and (FHeader.Count > 0) then
- begin
- FHeader[FHeader.Count-1] := FHeader[FHeader.Count-1] + #32 + TrimLeftSpace(String(PChar(@Line[1])));
- end
- else
- begin
- FHeader.Add(String(Line));
- end;
- end;
- DataLinePChar(Data, nTL, nPos, nLen, Line, DataEnd);
- if (Self is TMailMessage2000) and Assigned(FOwnerMessage.FOnProgress) then
- begin
- FOwnerMessage.FOnProgress(Self, nTL, nPos+1);
- Application.ProcessMessages;
- end;
- end;
- for Loop := 0 to FHeader.Count-1 do
- FHeader[Loop] := NormalizeLabel(FHeader[Loop]);
- end;
- MultPart := LowerCase(Copy(GetLabelValue(_C_T), 1, 10)) = _MP;
- InBound := False;
- IsBoundStart := False;
- IsBoundEnd := False;
- UUBound := '';
- if MultPart then
- begin
- StrPCopy(BoundStart, '--'+GetBoundary);
- StrPCopy(BoundEnd, '--'+GetBoundary+'--');
- BoundStartLen := StrLen(BoundStart);
- BoundEndLen := StrLen(BoundEnd);
- NoParts := False;
- end
- else
- begin
- if LabelExists(_C_T) then
- begin
- NoParts := True;
- BoundStartLen := 0;
- BoundEndLen := 0;
- end
- else
- begin
- StrPCopy(BoundStart, _UUBG);
- StrPCopy(BoundEnd, _UUEN);
- BoundStartLen := StrLen(BoundStart);
- BoundEndLen := StrLen(BoundEnd);
- NoParts := False;
- end;
- end;
- PartText := nil;
- // Get Body
- DataLinePChar(Data, nTL, nPos, nLen, Line, DataEnd);
- while (not DataEnd) and (not InBound) do
- begin
- if (not NoParts) and (((Line[0] = '-') and (Line[1] = '-')) or ((Line[0] = 'b') and (Line[1] = 'e'))) then
- begin
- IsBoundStart := StrLComp(Line, BoundStart, BoundStartLen) = 0;
- end;
- if NoParts or (not IsBoundStart) then
- begin
- if PartText = nil then
- begin
- PartText := Line;
- nSPos := nPos;
- end;
- DataLinePChar(Data, nTL, nPos, nLen, Line, DataEnd);
- if (Self is TMailMessage2000) and Assigned(FOwnerMessage.FOnProgress) then
- begin
- FOwnerMessage.FOnProgress(Self, nTL, nPos+1);
- Application.ProcessMessages;
- end;
- end
- else
- begin
- InBound := True;
- end;
- end;
- if nPos > nSPos then
- begin
- SChar := Data[nPos];
- Data[nPos] := #0;
- if PartText <> nil then
- FBody.Write(PartText[0], nPos-nSPos);
- Data[nPos] := SChar;
- end;
- if not NoParts then
- begin
- PartText := nil;
- if MultPart then
- begin
- // Get Mime parts
- while not DataEnd do
- begin
- if IsBoundStart or IsBoundEnd then
- begin
- if (PartText <> nil) and (PartText[0] <> #0) then
- begin
- Part := TMailPart.Create(Self.FOwnerMessage);
- Part.FOwnerPart := Self;
- Part.FOwnerMessage := Self.FOwnerMessage;
- SChar := Data[nPos-2];
- Data[nPos-2] := #0;
- Part.Fill(PartText, True);
- Data[nPos-2] := SChar;
- Part.FParentBoundary := GetBoundary;
- FSubPartList.Add(Part);
- PartText := nil;
- end;
- if IsBoundEnd then
- begin
- Break;
- end;
- IsBoundStart := False;
- IsBoundEnd := False;
- end
- else
- begin
- if PartText = nil then
- begin
- PartText := Line;
- end;
- end;
- DataLinePChar(Data, nTL, nPos, nLen, Line, DataEnd);
- if (Self is TMailMessage2000) and Assigned(FOwnerMessage.FOnProgress) then
- begin
- FOwnerMessage.FOnProgress(Self, nTL, nPos+1);
- Application.ProcessMessages;
- end;
- if not DataEnd then
- begin
- if (Line[0] = '-') and (Line[1] = '-') then
- begin
- IsBoundStart := StrLComp(Line, BoundStart, BoundStartLen) = 0;
- if not IsBoundStart then
- begin
- IsBoundEnd := StrLComp(Line, BoundEnd, BoundEndLen) = 0;
- end;
- end;
- end;
- end;
- end
- else
- begin
- // Get UUCode parts
- InUUCode := IsBoundStart;
- while not DataEnd do
- begin
- if IsBoundStart then
- begin
- if UUBound = '' then
- begin
- GetMem(PartText, FBody.Size+1);
- UUBound := GenerateBoundary;
- StrLCopy(PartText, FBody.Memory, FBody.Size);
- PartText[FBody.Size] := #0;
- Part := TMailPart.Create(Self.FOwnerMessage);
- Part.FOwnerPart := Self;
- Part.FOwnerMessage := Self.FOwnerMessage;
- Part.Fill(PChar(EncodeQuotedPrintable(String(PartText), False)), False);
- Part.FParentBoundary := UUBound;
- Part.SetLabelValue(_C_T, _T_P);
- Part.SetLabelParamValue(_C_T, _CSET, '"'+FOwnerMessage.FCharset+'"');
- Part.SetLabelValue(_C_TE, _E_QP);
- FSubPartList.Add(Part);
- SetLabelValue(_C_T, '');
- SetLabelValue(_C_T, _M_M);
- SetLabelParamValue(_C_T, _BDRY, '"'+UUBound+'"');
- FreeMem(PartText);
- end;
- PartText := nil;
- IsBoundStart := False;
- UUFile := TrimSpace(Copy(String(Line), 11, 999));
- end
- else
- begin
- if IsBoundEnd then
- begin
- Part := TMailPart.Create(Self.FOwnerMessage);
- Part.FOwnerPart := Self;
- Part.FOwnerMessage := Self.FOwnerMessage;
- SChar := Data[nPos-2];
- Data[nPos-2] := #0;
- DecodeUUCODE(PartText, Part.FDecoded);
- Data[nPos-2] := SChar;
- Part.EncodeBinary;
- Part.FParentBoundary := UUBound;
- Part.SetLabelValue(_C_T, GetMimeType(UUFile));
- Part.SetLabelValue(_C_TE, _E_BA);
- Part.SetLabelValue(_C_D, _ATCH);
- Part.SetLabelParamValue(_C_T, _NAME, '"'+EncodeLine7Bit(UUFile, FOwnerMessage.FCharSet)+'"');
- Part.SetLabelParamValue(_C_D, _FLNM, '"'+EncodeLine7Bit(UUFile, FOwnerMessage.FCharSet)+'"');
- Part.SetLabelValue(_XM2A, '"'+EncodeLine7Bit(UUFile, FOwnerMessage.FCharSet)+'"');
- Part.SetLabelParamValue(_XM2A, _EMBD, 'no');
- FSubPartList.Add(Part);
- PartText := nil;
- IsBoundEnd := False;
- end
- else
- begin
- if PartText = nil then
- begin
- PartText := Line;
- end;
- end;
- end;
- DataLinePChar(Data, nTL, nPos, nLen, Line, DataEnd);
- if (Self is TMailMessage2000) and Assigned(FOwnerMessage.FOnProgress) then
- begin
- FOwnerMessage.FOnProgress(Self, nTL, nPos+1);
- Application.ProcessMessages;
- end;
- if not DataEnd then
- begin
- if (Line[0] = 'b') and (Line[1] = 'e') then
- begin
- IsBoundStart := StrLComp(Line, BoundStart, BoundStartLen) = 0;
- InUUCode := True;
- end;
- if (not IsBoundStart) and InUUCode then
- begin
- if (Line[0] = 'e') and (Line[1] = 'n') and (Line[2] = 'd') then
- begin
- IsBoundEnd := True;
- InUUCode := False;
- end;
- end;
- end;
- end;
- end;
- end;
- if (Self is TMailMessage2000) and Assigned(FOwnerMessage.FOnProgress) then
- begin
- FOwnerMessage.FOnProgress(Self, nTL, nTL);
- Application.ProcessMessages;
- end;
- end;
- // Remove mailpart from its owner
- procedure TMailPart.Remove;
- begin
- if (FOwnerPart <> nil) and (Self <> FOwnerMessage) and
- (FOwnerPart.FSubPartList.IndexOf(Self) >= 0) then
- begin
- FOwnerPart.FSubPartList.Delete(FOwnerPart.FSubPartList.IndexOf(Self));
- FOwnerPart := nil;
- end;
- end;
- // Fill part with a file contents
- procedure TMailPart.LoadFromFile(FileName: String);
- var
- SL: TStringList;
- begin
- SL := TStringList.Create;
- SL.LoadFromFile(FileName);
- Fill(PChar(SL.Text), True);
- SL.Free;
- end;
- // Save the part data to a file
- procedure TMailPart.SaveToFile(FileName: String);
- var
- SL: TStringList;
- begin
- SL := TStringList.Create;
- SL.Text := GetSource;
- try
- SL.SaveToFile(FileName);
- finally
- SL.Free;
- end;
- end;
- // Fill part with a stream contents
- procedure TMailPart.LoadFromStream(Stream: TStream);
- var
- Buffer: PChar;
- begin
- GetMem(Buffer, Stream.Size+1);
- Stream.Position := 0;
- Stream.ReadBuffer(Buffer[0], Stream.Size);
- Buffer[Stream.Size] := #0;
- Fill(Buffer, True);
- FreeMem(Buffer);
- end;
- // Save the part data to a stream
- procedure TMailPart.SaveToStream(Stream: TStream);
- var
- Text: String;
- begin
- Text := GetSource;
- Stream.Size := Length(Text);
- Stream.Position := 0;
- Stream.WriteBuffer(Text[1], Length(Text));
- end;
- // Fill part with a string contents
- procedure TMailPart.SetSource(Text: String);
- begin
- Fill(PChar(Text), True);
- end;
- // Copy the part data to a string
- function TMailPart.GetSource: String;
- begin
- SetLength(Result, FBody.Size);
- FBody.Position := 0;
- FBody.ReadBuffer(Result[1], FBody.Size);
- Result := WrapHeader(FHeader.Text)+#13#10+Result;
- end;
- // Get file name of attachment
- function TMailPart.GetFileName: String;
- var
- Name: String;
- begin
- Name := '';
- if LabelExists(_XM2A) then
- begin
- Name := GetLabelValue(_XM2A);
- end
- else
- begin
- if LabelParamExists(_C_T, _NAME) then
- begin
- Name := GetLabelParamValue(_C_T, _NAME);
- end
- else
- begin
- if LabelParamExists(_C_D, _FLNM) then
- begin
- Name := GetLabelParamValue(_C_D, _FLNM);
- end
- else
- begin
- if LabelExists(_C_ID) then
- begin
- Name := GetLabelValue(_C_ID);
- end
- else
- begin
- if LabelExists(_C_LC) then
- begin
- Name := GetLabelValue(_C_LC);
- end
- else
- begin
- if LabelExists(_C_T) then
- begin
- Name := GetLabelValue(_C_T)+GetMimeExtension(GetLabelValue(_C_T));
- end
- else
- begin
- Name := 'unknown';
- end;
- end;
- end;
- end;
- end;
- end;
- Name := DecodeLine7Bit(Name);
- if (Pos('.', Name) = 0) and LabelExists(_C_T) then
- Name := Name + GetMimeExtension(GetLabelValue(_C_T));
- Result := ValidFileName(Name);
- end;
- // Get kind of attachment
- function TMailPart.GetAttachInfo: String;
- begin
- Result := LowerCase(GetLabelValue(_C_T));
- end;
- // Get boundary of this part (when it is a multipart header)
- function TMailPart.GetBoundary: String;
- begin
- Result := GetLabelParamValue(_C_T, _BDRY);
- end;
- // Decode mail part
- function TMailPart.Decode;
- var
- Content: String;
- Encoding: String;
- Data: String;
- DecoLine: String;
- Buffer: PChar;
- Size: Integer;
- nPos: Integer;
- begin
- Result := True;
- if FIsDecoded then