891 lines
19 KiB
C#
891 lines
19 KiB
C#
using System;
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using System.Text;
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using System.IO;
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using System.Net;
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using System.Net.Sockets;
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using System.Collections;
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using System.Runtime .InteropServices ;
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using System.Windows.Forms ;
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//正则表达式需要用到的命名空间（本程序中主要用于切割字符串）
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using System.Text .RegularExpressions ;
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namespace MailSend
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{
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public class SmtpMail
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{
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public SmtpMail()
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{
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//
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// TODO: 在此处添加构造函数逻辑
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//
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}
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//用来接收调用程序传来的附件路径
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private string []FilePath;
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// [DllImport("User32.dll")]
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// public static extern int MessageBox(int h, string m, string c, int type);
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//
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/// <summary>
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/// 重载的构造函数，以便把相关的附件信息传入
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/// </summary>
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/// <param name="array"></param>
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public SmtpMail(ArrayList array)
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{
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//在重载构造函数的同时，将FiilePath初始化
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FilePath=new string [array.Count ];
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Attachments = new System.Collections.ArrayList();
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for(int i=0;i<array.Count ;i++)
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{
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FilePath[i]=array[i].ToString ();
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}
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if(FilePath!=null)
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{
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AddAttachment(FilePath);
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}
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}
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private string enter="\r\n";
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/// <summary>
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/// 设定语言代码，默认设定为GB2312，如不需要可设置为""
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/// </summary>
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private string _charset="GB2312";
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/// <summary>
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/// 发件人地址
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/// </summary>
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private string _from="";
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/// <summary>
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/// 发件人姓名
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/// </summary>
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private string _fromName="";
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/// <summary>
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/// 回复邮件地址
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/// </summary>
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///public string ReplyTo="";
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/// <summary>
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/// 收件人列表
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/// </summary>
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private string Recipient;
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/// <summary>
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/// 邮件服务器域名
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/// </summary>
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private string mailserver="";
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/// <summary>
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/// 邮件服务器端口号
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/// </summary>
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private int mailserverport=25;
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/// <summary>
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/// SMTP认证时使用的用户名
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/// </summary>
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private string username="";
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/// <summary>
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/// SMTP认证时使用的密码
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/// </summary>
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private string password="";
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/// <summary>
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/// 是否需要SMTP验证
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/// </summary>
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private bool ESmtp=false;
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/// <summary>
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/// 是否Html邮件
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/// </summary>
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private bool _html=false;
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/// <summary>
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/// 邮件附件列表
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/// </summary>
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private IList Attachments;
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/// <summary>
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/// 邮件发送优先级，可设置为"High","Normal","Low"或"1","3","5"
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/// </summary>
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private string priority="Normal";
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/// <summary>
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/// 邮件主题
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/// </summary>
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private string _subject;
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/// <summary>
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/// 邮件正文
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/// </summary>
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private string _body;
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/// <summary>
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/// 错误消息反馈
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/// </summary>
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private string errmsg;
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/// <summary>
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/// TcpClient对象，用于连接服务器
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/// </summary>
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private TcpClient tc;
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/// <summary>
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/// NetworkStream对象
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/// </summary>
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private NetworkStream ns;
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/// <summary>
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/// SMTP错误代码哈希表
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/// </summary>
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private Hashtable ErrCodeHT = new Hashtable();
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/// <summary>
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/// SMTP正确代码哈希表
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/// </summary>
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private Hashtable RightCodeHT = new Hashtable();
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/// <summary>
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/// 邮件主题
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/// </summary>
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public string Subject
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{
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get
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{
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return this._subject;
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}
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set
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{
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this._subject = value;
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}
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}
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/// <summary>
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/// 邮件正文
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/// </summary>
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public string Body
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{
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get
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{
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return this._body;
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}
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set
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{
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this._body = value;
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}
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}
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/// <summary>
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/// 发件人地址
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/// </summary>
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public string From
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{
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get
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{
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return _from;
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}
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set
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{
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this._from = value;
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}
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}
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/// <summary>
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/// 设定语言代码，默认设定为GB2312，如不需要可设置为""
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/// </summary>
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public string Charset
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{
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get
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{
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return this._charset;
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}
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set
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{
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this._charset = value;
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}
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}
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/// <summary>
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/// 发件人姓名
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/// </summary>
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public string FromName
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{
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get
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{
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return this._fromName;
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}
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set
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{
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this._fromName = value;
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}
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}
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/// <summary>
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/// 收件人姓名
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/// </summary>
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public string RecipientName
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{
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get
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{
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return this.Recipient;
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}
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set
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{
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this.Recipient = value;
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}
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}
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/// <summary>
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/// 邮件服务器域名和验证信息
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/// 形如："user:pass@www.server.com:25"，也可省略次要信息。如"user:pass@www.server.com"或"www.server.com"
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/// </summary>
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public string MailDomain
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{
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set
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{
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mailserver=value;
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}
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}
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/// <summary>
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/// 邮件服务器端口号
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/// </summary>
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public int MailDomainPort
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{
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set
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{
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mailserverport=value;
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}
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}
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/// <summary>
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/// SMTP认证时使用的用户名
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/// </summary>
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public string MailServerUserName
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{
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set
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{
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if(value.Trim()!="")
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{
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username=value.Trim();
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ESmtp=true;
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}
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else
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{
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username="";
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ESmtp=false;
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}
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}
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}
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/// <summary>
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/// SMTP认证时使用的密码
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/// </summary>
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public string MailServerPassWord
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{
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set
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{
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password=value;
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}
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}
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/// <summary>
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/// 邮件发送优先级，可设置为"High","Normal","Low"或"1","3","5"
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/// </summary>
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public string Priority
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{
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set
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{
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switch(value.ToLower())
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{
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case "high":
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priority="High";
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break;
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case "1":
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priority="High";
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break;
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case "normal":
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priority="Normal";
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break;
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case "3":
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priority="Normal";
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break;
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case "low":
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priority="Low";
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break;
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case "5":
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priority="Low";
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break;
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default:
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priority="Normal";
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break;
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}
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}
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}
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/// <summary>
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/// 是否Html邮件
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/// </summary>
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public bool Html
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{
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get
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{
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return this._html;
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}
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set
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{
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this._html = value;
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}
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}
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/// <summary>
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/// 错误消息反馈
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/// </summary>
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public string ErrorMessage
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{
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get
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{
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return errmsg;
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}
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}
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public bool eSmtp
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{
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get
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{
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return this.ESmtp;
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}
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set
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{
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this.ESmtp =value;
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}
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}
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/// <summary>
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/// 添加邮件附件
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/// </summary>
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/// <param name="FilePath">附件绝对路径</param>
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public void AddAttachment(params string[] FilePath)
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{
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try
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{
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if(FilePath==null)
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{
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throw(new ArgumentNullException("FilePath"));
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}
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for(int i=0;i<FilePath.Length;i++)
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{
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Attachments.Add(FilePath[i]);
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}
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}
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catch(Exception ex)
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{
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MessageBox.Show (ex.ToString ());
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}
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}
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/// <summary>
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/// 得到上传附件的文件流
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/// </summary>
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/// <param name="FilePath">附件的绝对路径</param>
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private string GetStream(string FilePath)
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{
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try
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{
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//建立文件流对象
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System.IO.FileStream FileStr=new System.IO.FileStream(FilePath,System.IO.FileMode.Open);
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byte[] by=new byte[System.Convert.ToInt32(FileStr.Length)];
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FileStr.Read(by,0,by.Length);
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FileStr.Close();
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return(System.Convert.ToBase64String(by));
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}
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catch
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{
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MessageBox.Show ("可能你要打开的文件的属性是只读的！","请检查权限");
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return null;
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}
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}
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/// <summary>
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/// 发送邮件方法，所有参数均通过属性设置。
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/// </summary>
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public bool Send()
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{
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if(mailserver.Trim()=="")
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{
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MessageBox.Show ("必须指定SMTP服务器");
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return false;
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}
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return SendEmail();
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}
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/// <summary>
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/// 发送邮件方法
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/// </summary>
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/// <param name="smtpserver">smtp服务器信息，如"username:password@www.smtpserver.com:25"，也可去掉部分次要信
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public bool Send(string smtpserver)
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{
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MailDomain=smtpserver;
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return Send();
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}
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/// <summary>
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/// 发送邮件方法
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/// </summary>
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/// <param name="smtpserver">smtp服务器信息，如"username:password@www.smtpserver.com:25"，也可去掉部分次要信
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/// <param name="from">发件人mail地址</param>
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/// <param name="fromname">发件人姓名</param>
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/// <param name="to">收件人地址</param>
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/// <param name="toname">收件人姓名</param>
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/// <param name="html">是否HTML邮件</param>
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/// <param name="subject">邮件主题</param>
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/// <param name="body">邮件正文</param>
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public bool Send(string smtpserver,string from,string fromname,string to,bool html,string
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subject,string body)
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{
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MailDomain=smtpserver;
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From=from;
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FromName=fromname;
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Recipient=to;
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Html=html;
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Subject=subject;
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Body=body;
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return Send();
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}
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void Dispose()
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{
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if(ns!=null)ns.Close();
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if(tc!=null)tc.Close();
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}
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/// <summary>
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/// SMTP回应代码哈希表
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/// </summary>
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private void SMTPCodeAdd()
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{
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ErrCodeHT.Add("500","邮箱地址错误");
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ErrCodeHT.Add("501","参数格式错误");
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ErrCodeHT.Add("502","命令不可实现");
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ErrCodeHT.Add("503","服务器需要SMTP验证");
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ErrCodeHT.Add("504","命令参数不可实现");
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ErrCodeHT.Add("421","服务未就绪，关闭传输信道");
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ErrCodeHT.Add("450","要求的邮件操作未完成，邮箱不可用（例如，邮箱忙）");
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ErrCodeHT.Add("550","要求的邮件操作未完成，邮箱不可用（例如，邮箱未找到，或不可访问）");
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ErrCodeHT.Add("451","放弃要求的操作；处理过程中出错");
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ErrCodeHT.Add("551","用户非本地，请尝试<forward-path>");
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ErrCodeHT.Add("452","系统存储不足，要求的操作未执行");
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ErrCodeHT.Add("552","过量的存储分配，要求的操作未执行");
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ErrCodeHT.Add("553","邮箱名不可用，要求的操作未执行（例如邮箱格式错误）");
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ErrCodeHT.Add("432","需要一个密码转换");
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ErrCodeHT.Add("534","认证机制过于简单");
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ErrCodeHT.Add("538","当前请求的认证机制需要加密");
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ErrCodeHT.Add("454","临时认证失败");
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ErrCodeHT.Add("530","需要认证");
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RightCodeHT.Add("220","服务就绪");
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RightCodeHT.Add("250","要求的邮件操作完成");
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RightCodeHT.Add("251","用户非本地，将转发向<forward-path>");
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RightCodeHT.Add("354","开始邮件输入，以<enter>.<enter>结束");
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RightCodeHT.Add("221","服务关闭传输信道");
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RightCodeHT.Add("334","服务器响应验证Base64字符串");
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RightCodeHT.Add("235","验证成功");
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}
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/// <summary>
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/// 将字符串编码为Base64字符串
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/// </summary>
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/// <param name="str">要编码的字符串</param>
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private string Base64Encode(string str)
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{
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byte[] barray;
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barray=Encoding.Default.GetBytes(str);
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return Convert.ToBase64String(barray);
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}
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/// <summary>
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/// 将Base64字符串解码为普通字符串
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/// </summary>
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/// <param name="str">要解码的字符串</param>
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private string Base64Decode(string str)
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{
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byte[] barray;
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barray=Convert.FromBase64String(str);
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return Encoding.Default.GetString(barray);
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}
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/// <summary>
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/// 发送SMTP命令
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/// </summary>
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private bool SendCommand(string str)
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{
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byte[] WriteBuffer;
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if(str==null||str.Trim()==String.Empty)
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{
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return true;
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}
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WriteBuffer = Encoding.Default.GetBytes(str);
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try
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{
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ns.Write(WriteBuffer,0,WriteBuffer.Length);
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}
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catch
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{
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errmsg="网络连接错误";
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return false;
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}
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return true;
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}
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/// <summary>
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/// 接收SMTP服务器回应
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/// </summary>
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private string RecvResponse()
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{
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int StreamSize;
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string ReturnValue = String.Empty;
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byte[] ReadBuffer = new byte[1024] ;
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try
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{
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StreamSize=ns.Read(ReadBuffer,0,ReadBuffer.Length);
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}
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catch(Exception ex)
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{
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MessageBox.Show (ex.ToString ());
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return "false";
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}
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if (StreamSize==0)
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{
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return ReturnValue ;
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}
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else
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{
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ReturnValue = Encoding.Default.GetString(ReadBuffer).Substring(0,StreamSize);
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return ReturnValue;
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}
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}
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/// <summary>
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/// 与服务器交互，发送一条命令并接收回应。
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/// </summary>
|
||
/// <param name="str">一个要发送的命令</param>
|
||
/// <param name="errstr">如果错误，要反馈的信息</param>
|
||
private bool Dialog(string str,string errstr)
|
||
{
|
||
|
||
if(str==null||str.Trim()=="")
|
||
{
|
||
return true;
|
||
}
|
||
if(SendCommand(str))
|
||
{
|
||
string RR=RecvResponse();
|
||
if(RR=="false")
|
||
{
|
||
return false;
|
||
}
|
||
try
|
||
{
|
||
string RRCode=RR.Substring(0,3);
|
||
if(RightCodeHT[RRCode]!=null)
|
||
{
|
||
return true;
|
||
}
|
||
else
|
||
{
|
||
if(ErrCodeHT[RRCode]!=null)
|
||
{
|
||
errmsg+=(RRCode+ErrCodeHT[RRCode].ToString());
|
||
errmsg+=enter;
|
||
}
|
||
else
|
||
{
|
||
errmsg+=RR;
|
||
}
|
||
errmsg+=errstr;
|
||
return false;
|
||
}
|
||
}
|
||
catch
|
||
{
|
||
MessageBox.Show ("发送的附件超过本服务器对个人软件的支持！","请检查附件的大小");
|
||
return false;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
return false;
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 与服务器交互，发送一组命令并接收回应。
|
||
/// </summary>
|
||
|
||
private bool Dialog(string[] str,string errstr)
|
||
{
|
||
for(int i=0;i<str.Length;i++)
|
||
{
|
||
//如果在身份验证阶段有一个不成功，就返回错误标志位
|
||
if(!Dialog(str[i],""))
|
||
{
|
||
errmsg+=enter;
|
||
errmsg+=errstr;
|
||
return false;
|
||
}
|
||
}
|
||
|
||
//身份验证全部正确的话，则返回正确标志位
|
||
return true;
|
||
}
|
||
|
||
/// <summary>
|
||
/// SendEmail
|
||
/// </summary>
|
||
/// <returns></returns>
|
||
private bool SendEmail()
|
||
{
|
||
try
|
||
{
|
||
tc=new TcpClient(mailserver,mailserverport);
|
||
}
|
||
catch
|
||
{
|
||
MessageBox.Show ("连接失败","请确认");
|
||
return false;
|
||
}
|
||
|
||
ns = tc.GetStream();
|
||
SMTPCodeAdd();
|
||
|
||
//验证网络连接是否正确
|
||
if(RightCodeHT[RecvResponse().Substring(0,3)]==null)
|
||
{
|
||
errmsg="网络连接失败";
|
||
return false;
|
||
}
|
||
|
||
|
||
string[] SendBuffer;
|
||
string SendBufferstr;
|
||
|
||
//进行SMTP验证
|
||
if(ESmtp)
|
||
{
|
||
SendBuffer=new String[4];
|
||
SendBuffer[0]="EHLO " + mailserver + enter;
|
||
SendBuffer[1]="AUTH LOGIN" + enter;
|
||
SendBuffer[2]=Base64Encode(username) + enter;
|
||
SendBuffer[3]=Base64Encode(password) + enter;
|
||
if(!Dialog(SendBuffer,"SMTP服务器验证失败，请核对用户名和密码。"))
|
||
{
|
||
MessageBox.Show ("SMTP服务器验证失败，请核对用户名和密码。");
|
||
return false;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
SendBufferstr="HELO " + mailserver + enter;
|
||
if(!Dialog(SendBufferstr,""))
|
||
return false;
|
||
}
|
||
|
||
//
|
||
SendBufferstr="MAIL FROM:<" + From + ">" + enter;
|
||
if(!Dialog(SendBufferstr,"发件人地址错误，或不能为空"))
|
||
{
|
||
MessageBox.Show("发件人地址错误，或不能为空");
|
||
return false;
|
||
}
|
||
|
||
|
||
//把传过来的收件人的地址分割然后提交给服务器
|
||
string split=",";
|
||
string []address=Regex.Split (RecipientName,split);
|
||
SendBuffer=new string [address.Length];
|
||
for(int i=0;i<SendBuffer.Length;i++)
|
||
{
|
||
SendBuffer[i]="RCPT TO:<" +address[i]+">" + enter;
|
||
}
|
||
if(!Dialog(SendBuffer,"收件人地址有误"))
|
||
{
|
||
MessageBox.Show("收件人地址有误");
|
||
return false;
|
||
}
|
||
|
||
|
||
SendBufferstr="DATA" + enter;
|
||
if(!Dialog(SendBufferstr,""))
|
||
return false;
|
||
|
||
SendBufferstr="From:" + FromName + "<" + From +">" +enter;
|
||
SendBufferstr += "To:<"+RecipientName+">"+enter;
|
||
|
||
|
||
|
||
SendBufferstr+=((Subject==String.Empty || Subject==null)?"Subject:":((Charset=="")?("Subject:" +
|
||
|
||
Subject):("Subject:" + "=?" + Charset.ToUpper() + "?B?" + Base64Encode(Subject) +"?="))) + enter;
|
||
SendBufferstr+="X-Priority:" + priority + enter;
|
||
SendBufferstr+="X-Mailer: ArgentSwan Mail Sender" + enter;
|
||
SendBufferstr+="MIME-Version: 1.0" + enter;
|
||
|
||
//MIME定义了5个新的信头字段，可以与原有信头字段一样，用在RF822邮件的首部中。
|
||
//1．MIME版本信头字段 格式：MIME-Version:1.0 <CRLF>
|
||
//2．邮件唯一标识信头字段 格式：Content-ID：唯一标识信件的字符串 <CRLF>
|
||
//3．邮件内容描述信头字段 格式：Content-Description:描述文本 <CRLF>
|
||
//4．MIME邮件的内容类型信头字段 格式：Content-Type:主类别标识符/子类别标识符 [；参数列表] <CRLF>
|
||
//5．内容传送编码方式信头字段 格式：Content-Transfer-Encoding:编码方式标识符 <CRLF>
|
||
|
||
if(Attachments.Count!=0)
|
||
{
|
||
//mixed 按照特定顺序的几个独立部分
|
||
SendBufferstr+="Content-Type: multipart/mixed;" + enter;
|
||
SendBufferstr += " boundary=\"***"+
|
||
|
||
(Html?"001_yinhu19821115":"001_yinhu19831115")+"***\""+enter+enter;
|
||
}
|
||
|
||
if(Html)
|
||
{
|
||
if(Attachments.Count==0)
|
||
{
|
||
//multipart多部分 alternative 不同格式的同一邮件
|
||
SendBufferstr += "Content-Type: multipart/alternative;"+enter;//内容格式和分隔符
|
||
SendBufferstr += " boundary=\"***003_yinhu19821115***\""+enter+enter;
|
||
|
||
SendBufferstr += "This is a multi-part message in MIME format."+enter+enter;
|
||
}
|
||
else
|
||
{
|
||
SendBufferstr +="This is a multi-part message in MIME format."+enter+enter;
|
||
SendBufferstr += "--***001_yinhu19821115***"+enter;
|
||
SendBufferstr += "Content-Type: multipart/alternative;"+enter;//内容格式和分隔符
|
||
SendBufferstr += " boundary=\"***003_yinhu19821115***\""+enter+enter;
|
||
|
||
|
||
}
|
||
SendBufferstr += "--***003_yinhu19821115***"+enter;
|
||
SendBufferstr += "Content-Type: text/plain;"+ enter;
|
||
SendBufferstr += ((Charset=="")?(" charset=\"iso-8859-1\""):(" charset=\"" +
|
||
|
||
Charset.ToLower() + "\"")) + enter;
|
||
SendBufferstr+="Content-Transfer-Encoding: base64" + enter + enter;
|
||
SendBufferstr+= Base64Encode("邮件内容为HTML格式，请选择HTML方式查看") + enter + enter;
|
||
|
||
SendBufferstr += "--***003_yinhu19821115***"+enter;
|
||
|
||
|
||
|
||
SendBufferstr+="Content-Type: text/html;" + enter;
|
||
SendBufferstr+=((Charset=="")?(" charset=\"iso-8859-1\""):(" charset=\"" +
|
||
|
||
Charset.ToLower() + "\"")) + enter;
|
||
SendBufferstr+="Content-Transfer-Encoding: base64" + enter + enter;
|
||
SendBufferstr+=Base64Encode(Body)+ enter + enter;
|
||
SendBufferstr += "--***003_yinhu19821115***--"+enter;
|
||
}
|
||
else
|
||
{
|
||
if(Attachments.Count!=0)
|
||
{
|
||
SendBufferstr += "--***001_yinhu19831115***"+enter;
|
||
}
|
||
SendBufferstr+="Content-Type: text/plain;" + enter;
|
||
SendBufferstr+=((Charset=="")?(" charset=\"iso-8859-1\""):(" charset=\"" +
|
||
|
||
Charset.ToLower() + "\"")) + enter;
|
||
SendBufferstr+="Content-Transfer-Encoding: base64" + enter + enter;
|
||
SendBufferstr+= Base64Encode(Body) + enter;
|
||
}
|
||
|
||
|
||
if(Attachments.Count!=0)
|
||
{
|
||
for(int i=0;i<Attachments.Count;i++)
|
||
{
|
||
string filepath = Attachments[i].ToString();
|
||
SendBufferstr += "--***"+
|
||
|
||
(Html?"001_yinhu19821115":"001_yinhu19831115") +"***"+enter;
|
||
//用于在电子邮件中传输一个含有任意数据的实体。内容是一个未解释的字节序列。
|
||
//当内容类型未知或者对数据没有具体定义媒体类别时，通常使用它描述
|
||
SendBufferstr += "Content-Type: application/octet-stream"+enter;
|
||
SendBufferstr += " name=\"=?"+Charset.ToUpper()+"?B?"+Base64Encode
|
||
|
||
(filepath.Substring(filepath.LastIndexOf("\\")+1))+"?=\""+enter;
|
||
SendBufferstr += "Content-Transfer-Encoding: base64"+enter;
|
||
SendBufferstr += "Content-Disposition: attachment;"+enter;
|
||
SendBufferstr += " filename=\"=?"+Charset.ToUpper()+"?B?"+Base64Encode
|
||
|
||
(filepath.Substring(filepath.LastIndexOf("\\")+1))+"?=\""+enter+enter;
|
||
SendBufferstr += GetStream(filepath)+enter+enter;
|
||
}
|
||
SendBufferstr += "--***"+ (Html?"001_yinhu19821115":"001_yinhu19831115")
|
||
|
||
+"***--"+enter+enter;
|
||
}
|
||
|
||
SendBufferstr += enter + "." + enter;
|
||
|
||
if(!Dialog(SendBufferstr,"错误信件信息"))
|
||
return false;
|
||
|
||
SendBufferstr="QUIT" + enter;
|
||
if(!Dialog(SendBufferstr,"断开连接时错误"))
|
||
return false;
|
||
|
||
ns.Close();
|
||
tc.Close();
|
||
return true;
|
||
}
|
||
|
||
}
|
||
}
|
||
|