298 lines
10 KiB
C#
298 lines
10 KiB
C#
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using System;
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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.Text;
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using Microsoft.Singularity.Smtp;
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namespace Microsoft.Singularity.Smtp.Clients
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{
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public class SmtpClient
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{
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public const int _port = 25;
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public static bool verbose = false;
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//////////////////////////////////////////////////////////////////////////////
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//
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private static void Usage()
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{
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Console.WriteLine("Usage:");
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Console.WriteLine(" cli [operation] [options]");
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Console.WriteLine("Options:");
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Console.WriteLine(" /s:server Send to server.");
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Console.WriteLine(" /? Print this help information.");
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}
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public static int Main(string[] args)
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{
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bool needHelp = false;
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String client = Dns.GetHostName();
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String server = "127.0.0.1";
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String[] files = null;
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if (args.Length == 0) {
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needHelp = true;
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}
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Console.WriteLine("Self: {0}", client);
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for (int a = 0; a < args.Length && !needHelp; a++) {
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String arg = args[a];
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if (arg[0] == '/') {
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int colon = arg.IndexOf(':');
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String option;
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String values;
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if (colon > 1) {
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option = arg.Substring(1, colon - 1).ToLower();
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values = arg.Substring(colon + 1);
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}
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else {
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option = arg.Substring(1).ToLower();
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values = null;
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}
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switch (option[0]) {
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// Commands:
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case '?': // Help
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needHelp = true;
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break;
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case 's': // Server
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case 'S':
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server = values;
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break;
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case 'v': // Verbose
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verbose = true;
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break;
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default:
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Console.WriteLine("Unknown option: {0}", arg);
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needHelp = true;
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break;
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}
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}
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else {
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String file = Path.GetFileName(arg);
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String dir = Path.GetDirectoryName(arg);
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String path = (dir == String.Empty) ?
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Directory.GetCurrentDirectory() :
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Path.GetFullPath(dir);
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files = Directory.GetFiles(path, file);
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}
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}
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if (files == null) {
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needHelp = true;
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}
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if (needHelp) {
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Usage();
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return 1;
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}
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// Send the file.
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String line;
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Socket socket = new Socket(AddressFamily.InterNetwork,
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SocketType.Stream,
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ProtocolType.Tcp);
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try {
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IPAddress addr = IPAddress.Parse(server);
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socket.Connect(new IPEndPoint(addr, _port));
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} catch (SocketException e) {
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Console.WriteLine("Socket connect failure: {0}", e.Message);
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return 2;
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}
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Session session = new Session(socket);
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session.Verbose = verbose;
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try {
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// Establish SMPT connection.
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line = session.ReadLine7();
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if (session.Result != 220) {
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Console.WriteLine(":: Aborting due to {0}", session.Result);
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return session.Quit();
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}
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session.WriteLine7("EHLO ", client);
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for (;;) {
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line = session.ReadLine7();
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if (session.Result != 250) {
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Console.WriteLine(":: Aborting due to {0}", session.Result);
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return session.Quit();
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}
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if (line[3] != '-') {
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break;
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}
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}
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// Send files.
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foreach (string file in files) {
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Console.WriteLine(":: {0}", file);
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String[] lines = File.ReadAllLines(file);
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#if false
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// Sanitize the data.
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for (int i = 0; i < lines.Length; i++) {
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String data = lines[i];
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if (data.Length >= 2 &&
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data[data.Length - 2] == '\r' &&
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data[data.Length - 1] == '\n') {
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lines[i] = data.Substring(0, data.Length - 2);
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}
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else if (data.Length >= 1 &&
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data[data.Length - 1] == '\n') {
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lines[i] = data.Substring(0, data.Length - 1);
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}
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else if (data.Length >= 1 &&
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data[data.Length - 1] == '\r') {
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lines[i] = data.Substring(0, data.Length - 1);
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}
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}
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#endif
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session.WriteLine7("NOOP ", file);
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line = session.ReadLine7();
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if (session.Result != 250) {
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Console.WriteLine(":: Aborting due to {0}", session.Result);
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return session.Quit();
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}
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string from = FindFrom(lines).ToLower();
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session.WriteLine7("MAIL FROM: <", from, ">");
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line = session.ReadLine7();
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if (session.Result != 250) {
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Console.WriteLine(":: Aborting due to {0}", session.Result);
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return session.Quit();
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}
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string to = FindTo("To: ", lines);
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string cc = FindTo("Cc: ", lines);
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string bcc = FindTo("Bcc: ", lines);
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if (to == null) {
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to = cc;
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cc = null;
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}
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if (to == null) {
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to = bcc;
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bcc = null;
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}
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if (cc != null) {
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to = to + "," + cc;
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}
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if (bcc != null) {
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to = to + "," + bcc;
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}
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if (to == null || to.Length == 0) {
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Console.WriteLine(":: Couldn't find receipients.");
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return session.Quit();
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}
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string[] rcpts = to.Split(new Char[]{','});
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for (int i = 0; i < rcpts.Length; i++) {
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rcpts[i] = rcpts[i].Trim().ToLower();
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if (rcpts[i].Length == 0) {
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rcpts[i] = null;
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}
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}
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for (int i = 0; i < rcpts.Length; i++) {
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for (int j = i + 1; j < rcpts.Length; j++) {
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if (rcpts[i] == rcpts[j]) {
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rcpts[j] = null;
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}
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}
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}
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foreach (string rcpt in rcpts) {
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if (rcpt != null) {
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session.WriteLine7("RCPT TO: <", rcpt, ">");
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line = session.ReadLine7();
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if (session.Result != 250) {
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Console.WriteLine(":: Aborting due to {0}", session.Result);
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return session.Quit();
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}
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}
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}
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session.WriteLine7("DATA");
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line = session.ReadLine7();
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if (session.Result != 354) {
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Console.WriteLine(":: Aborting due to {0}", session.Result);
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return session.Quit();
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}
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foreach (string data in lines) {
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if (data.Length > 0 && data[0] == '.') {
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session.WritePrefix((byte)'.');
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}
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session.WriteLine7(data);
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}
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session.WriteLine7(".");
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line = session.ReadLine7();
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if (session.Result != 250) {
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Console.WriteLine(":: Aborting due to {0}", session.Result);
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return session.Quit();
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}
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}
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session.Quit();
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}
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catch (SocketException e) {
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Console.WriteLine("Caught socket exception: {0}", e.Message);
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}
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return 0;
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}
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//////////////////////////////////////////////////////////////////////////////
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public static String FindFrom(String[] lines)
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{
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foreach (string line in lines) {
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if (line.Length == 0) {
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return null; // Header ended.
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}
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if (line.StartsWith("From: ")) {
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return line.Substring(6);
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}
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}
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return null;
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}
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public static string FindTo(String prefix, String[] lines)
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{
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for (int i = 0; i < lines.Length; i++) {
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if (lines[i].Length == 0) {
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return null; // Header ended.
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}
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if (lines[i].StartsWith(prefix)) {
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string to = lines[i++].Substring(prefix.Length);
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while (lines[i].Length > 0 && (lines[i][0] == ' ' || lines[i][0] == '\t')) {
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to = to + lines[i++];
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}
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return to;
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}
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}
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return null;
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}
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}
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}
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