246 lines
8.6 KiB
C
246 lines
8.6 KiB
C
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// Smtp.h: interface for the CSmtp class.
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//
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// Written by Robert Simpson (robert@blackcastlesoft.com)
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// Created 11/1/2000
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// Version 1.7 -- Last Modified 06/18/2001
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// See smtp.cpp for details of this revision
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//////////////////////////////////////////////////////////////////////
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#if !defined(AFX_SMTP_H__F5ACA8FA_AF73_11D4_907D_0080C6F7C752__INCLUDED_)
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#define AFX_SMTP_H__F5ACA8FA_AF73_11D4_907D_0080C6F7C752__INCLUDED_
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#if _MSC_VER > 1000
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#pragma once
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#endif // _MSC_VER > 1000
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#pragma comment(lib,"wsock32.lib")
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#include <atlbase.h>
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#include <winsock.h>
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#include <string>
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#include "Base64.h"
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// Some ATL string conversion enhancements
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// ATL's string conversions allocate memory on the stack, which can
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// be undesirable if converting huge strings. These enhancements
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// provide for a pre-allocated memory block to be used as the
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// destination for the string conversion.
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#define _W2A(dst,src) AtlW2AHelper(dst,src,lstrlenW(src)+1)
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#define _A2W(dst,src) AtlA2WHelper(dst,src,lstrlenA(src)+1)
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typedef std::wstring StringW;
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typedef std::string StringA;
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#ifdef _UNICODE
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typedef StringW String;
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#define _W2T(dst,src) lstrcpyW(dst,src)
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#define _T2W(dst,src) lstrcpyW(dst,src)
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#define _T2A(dst,src) _W2A(dst,src)
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#define _A2T(dst,src) _A2W(dst,src)
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#else
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typedef StringA String;
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#define _W2T(dst,src) _W2A(dst,src)
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#define _T2W(dst,src) _A2W(dst,src)
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#define _T2A(dst,src) lstrcpyA(dst,src)
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#define _A2T(dst,src) lstrcpyA(dst,src)
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#endif
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// When the SMTP server responds to a command, this is the
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// maximum size of a response I expect back.
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#ifndef CMD_RESPONSE_SIZE
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#define CMD_RESPONSE_SIZE 1024
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#endif
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// The CSmtp::SendCmd() function will send blocks no larger than this value
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// Any outgoing data larger than this value will trigger an SmtpProgress()
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// event for all blocks sent.
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#ifndef CMD_BLOCK_SIZE
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#define CMD_BLOCK_SIZE 1024
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#endif
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// Default mime version is 1.0 of course
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#ifndef MIME_VERSION
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#define MIME_VERSION _T("1.0")
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#endif
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// This is the message that would appear in an e-mail client that doesn't support
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// multipart messages
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#ifndef MULTIPART_MESSAGE
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#define MULTIPART_MESSAGE _T("This is a multipart message in MIME format")
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#endif
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// Default message body encoding
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#ifndef MESSAGE_ENCODING
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#define MESSAGE_ENCODING _T("text/plain")
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#endif
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// Default character set
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#ifndef MESSAGE_CHARSET
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#define MESSAGE_CHARSET _T("iso-8859-1")
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#endif
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// Some forward declares
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class CSmtp;
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class CSmtpAddress;
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class CSmtpMessage;
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class CSmtpAttachment;
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class CSmtpMessageBody;
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class CSmtpMimePart;
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// These are the only 4 encoding methods currently supported
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typedef enum EncodingEnum
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{
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encodeGuess,
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encode7Bit,
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encode8Bit,
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encodeQuotedPrintable,
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encodeBase64
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};
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// This code supports three types of mime-types, and can optionally guess a mime type
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// based on message content.
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typedef enum MimeTypeEnum
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{
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mimeGuess,
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mimeMixed,
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mimeAlternative,
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mimeRelated
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};
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// Attachments and message bodies inherit from this class
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// It allows each part of a multipart MIME message to have its own attributes
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class CSmtpMimePart
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{
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public:
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String Encoding; // Content encoding. Leave blank to let the system discover it
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String Charset; // Character set for text attachments
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String ContentId; // Unique content ID, leave blank to let the system handle it
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EncodingEnum TransferEncoding; // How to encode for transferring to the server
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};
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// This class represents a user's text name and corresponding email address
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class CSmtpAddress
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{
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public: // Constructors
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CSmtpAddress(LPCTSTR pszAddress = NULL, LPCTSTR pszName = NULL);
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public: // Operators
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const CSmtpAddress& operator=(LPCTSTR pszAddress);
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const CSmtpAddress& operator=(const String& strAddress);
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public: // Member Variables
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String Name;
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String Address;
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};
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// This class represents a file attachment
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class CSmtpAttachment : public CSmtpMimePart
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{
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public: // Constructors
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CSmtpAttachment(LPCTSTR pszFilename = NULL, LPCTSTR pszAltName = NULL, BOOL bIsInline = FALSE, LPCTSTR pszEncoding = NULL, LPCTSTR pszCharset = MESSAGE_CHARSET, EncodingEnum encode = encodeGuess);
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public: // Operators
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const CSmtpAttachment& operator=(LPCTSTR pszFilename);
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const CSmtpAttachment& operator=(const String& strFilename);
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public: // Member Variables
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String FileName; // Fully-qualified path and filename of this attachment
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String AltName; // Optional, an alternate name for the file to use when sending
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BOOL Inline; // Is this an inline attachment?
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};
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// Multiple message body part support
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class CSmtpMessageBody : public CSmtpMimePart
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{
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public: // Constructors
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CSmtpMessageBody(LPCTSTR pszBody = NULL, LPCTSTR pszEncoding = MESSAGE_ENCODING, LPCTSTR pszCharset = MESSAGE_CHARSET, EncodingEnum encode = encodeGuess);
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public: // Operators
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const CSmtpMessageBody& operator=(LPCTSTR pszBody);
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const CSmtpMessageBody& operator=(const String& strBody);
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public: // Member Variables
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String Data; // Message body;
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};
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// This class represents a single message that can be sent via CSmtp
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class CSmtpMessage
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{
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public: // Constructors
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CSmtpMessage();
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public: // Member Variables
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CSmtpAddress Sender; // Who the message is from
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CSmtpAddress Recipient; // The intended recipient
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String Subject; // The message subject
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CSimpleArray<CSmtpMessageBody> Message; // An array of message bodies
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CSimpleArray<CSmtpAddress> CC; // Carbon Copy recipients
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CSimpleArray<CSmtpAddress> BCC; // Blind Carbon Copy recipients
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CSimpleArray<CSmtpAttachment> Attachments; // An array of attachments
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CSimpleMap<String,String> Headers; // Optional headers to include in the message
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SYSTEMTIME Timestamp; // Timestamp of the message
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MimeTypeEnum MimeType; // Type of MIME message this is
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String MessageId; // Optional message ID
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private: // Private Member Variables
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int GMTOffset; // GMT timezone offset value
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public: // Public functions
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void Parse(String& strDest);
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private: // Private functions to finalize the message headers & parse the message
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EncodingEnum GuessEncoding(LPBYTE pByte, DWORD dwLen);
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void EncodeMessage(EncodingEnum code, String& strMsg, String& strMethod, LPBYTE pByte = NULL, DWORD dwSize = 0);
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void Make7Bit(String& strDest, String& strSrc);
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void CommitHeaders();
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void BreakMessage(String& strDest, String& strSrc, int nLength = 76);
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void EncodeQuotedPrintable(String& strDest, String& strSrc);
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};
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// The main class for connecting to a SMTP server and sending mail.
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class CSmtp
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{
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public: // Constructors
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CSmtp();
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virtual ~CSmtp();
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public: // Member Variables. Feel free to modify these to change the system's behavior
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BOOL m_bExtensions; // Use ESMTP extensions (TRUE)
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DWORD m_dwCmdTimeout; // Timeout for issuing each command (30 seconds)
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WORD m_wSmtpPort; // Port to communicate via SMTP (25)
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String m_strUser; // Username for authentication
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String m_strPass; // Password for authentication
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private: // Private Member Variables
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SOCKET m_hSocket; // Socket being used to communicate to the SMTP server
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String m_strResult; // String result from a SendCmd()
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BOOL m_bConnected; // Connected to SMTP server
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BOOL m_bUsingExtensions;// Whether this SMTP server uses ESMTP extensions
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public: // These represent the primary public functionality of this class
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BOOL Connect(LPTSTR pszServer);
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int SendMessage(CSmtpMessage& msg);
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int SendMessage(CSmtpAddress& addrFrom, CSmtpAddress& addrTo, LPCTSTR pszSubject, LPTSTR pszMessage, LPVOID pvAttachments = NULL, DWORD dwAttachmentCount = 0);
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int SendMessage(LPTSTR pszAddrFrom, LPTSTR pszAddrTo, LPTSTR pszSubject, LPTSTR pszMessage, LPVOID pvAttachments = NULL, DWORD dwAttachmentCount = 0);
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void Close();
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public: // These represent the overridable methods for receiving events from this class
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virtual int SmtpWarning(int nWarning, LPTSTR pszWarning);
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virtual int SmtpError(int nCode, LPTSTR pszErr);
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virtual void SmtpCommandResponse(LPTSTR pszCmd, int nResponse, LPTSTR pszResponse);
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virtual BOOL SmtpProgress(LPSTR pszBuffer, DWORD dwSent, DWORD dwTotal);
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private: // These functions are used privately to conduct a SMTP session
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int SendCmd(LPTSTR pszCmd);
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int SendAuthentication();
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int SendHello();
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int SendQuitCmd();
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int SendFrom(LPTSTR pszFrom);
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int SendTo(LPTSTR pszTo);
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int SendData(CSmtpMessage &msg);
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int RaiseWarning(int nWarning);
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int RaiseError(int nError);
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};
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#endif // !defined(AFX_SMTP_H__F5ACA8FA_AF73_11D4_907D_0080C6F7C752__INCLUDED_)
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