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| 1 | /* | ||
| 2 | * Copyright (c) 1995, 2003, Oracle and/or its affiliates. All rights reserved. | ||
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 4 | * | ||
| 5 | * This code is free software; you can redistribute it and/or modify it | ||
| 6 | * under the terms of the GNU General Public License version 2 only, as | ||
| 7 | * published by the Free Software Foundation. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | package sun.net.smtp; | ||
| 27 | |||
| 28 | import java.util.StringTokenizer; | ||
| 29 | import java.io.*; | ||
| 30 | import java.net.*; | ||
| 31 | import sun.net.TransferProtocolClient; | ||
| 32 | |||
| 33 | /** | ||
| 34 | * This class implements the SMTP client. | ||
| 35 | * You can send a piece of mail by creating a new SmtpClient, calling | ||
| 36 | * the "to" method to add destinations, calling "from" to name the | ||
| 37 | * sender, calling startMessage to return a stream to which you write | ||
| 38 | * the message (with RFC733 headers) and then you finally close the Smtp | ||
| 39 | * Client. | ||
| 40 | * | ||
| 41 | * @author James Gosling | ||
| 42 | */ | ||
| 43 | |||
| 44 | public class SmtpClient extends TransferProtocolClient { | ||
| 45 | |||
| 46 | String mailhost; | ||
| 47 | SmtpPrintStream message; | ||
| 48 | |||
| 49 | /** | ||
| 50 | * issue the QUIT command to the SMTP server and close the connection. | ||
| 51 | */ | ||
| 52 | public void closeServer() throws IOException { | ||
| 53 | if (serverIsOpen()) { | ||
| 54 | closeMessage(); | ||
| 55 | issueCommand("QUIT\r\n", 221); | ||
| 56 | super.closeServer(); | ||
| 57 | } | ||
| 58 | } | ||
| 59 | |||
| 60 | void issueCommand(String cmd, int expect) throws IOException { | ||
| 61 | sendServer(cmd); | ||
| 62 | int reply; | ||
| 63 | while ((reply = readServerResponse()) != expect) | ||
| 64 | if (reply != 220) { | ||
| 65 | throw new SmtpProtocolException(getResponseString()); | ||
| 66 | } | ||
| 67 | } | ||
| 68 | |||
| 69 | private void toCanonical(String s) throws IOException { | ||
| 70 | if (s.startsWith("<")) | ||
| 71 | issueCommand("rcpt to: " + s + "\r\n", 250); | ||
| 72 | else | ||
| 73 | issueCommand("rcpt to: <" + s + ">\r\n", 250); | ||
| 74 | } | ||
| 75 | |||
| 76 | public void to(String s) throws IOException { | ||
| 77 | int st = 0; | ||
| 78 | int limit = s.length(); | ||
| 79 | int pos = 0; | ||
| 80 | int lastnonsp = 0; | ||
| 81 | int parendepth = 0; | ||
| 82 | boolean ignore = false; | ||
| 83 | while (pos < limit) { | ||
| 84 | int c = s.charAt(pos); | ||
| 85 | if (parendepth > 0) { | ||
| 86 | if (c == '(') | ||
| 87 | parendepth++; | ||
| 88 | else if (c == ')') | ||
| 89 | parendepth--; | ||
| 90 | if (parendepth == 0) | ||
| 91 | if (lastnonsp > st) | ||
| 92 | ignore = true; | ||
| 93 | else | ||
| 94 | st = pos + 1; | ||
| 95 | } else if (c == '(') | ||
| 96 | parendepth++; | ||
| 97 | else if (c == '<') | ||
| 98 | st = lastnonsp = pos + 1; | ||
| 99 | else if (c == '>') | ||
| 100 | ignore = true; | ||
| 101 | else if (c == ',') { | ||
| 102 | if (lastnonsp > st) | ||
| 103 | toCanonical(s.substring(st, lastnonsp)); | ||
| 104 | st = pos + 1; | ||
| 105 | ignore = false; | ||
| 106 | } else { | ||
| 107 | if (c > ' ' && !ignore) | ||
| 108 | lastnonsp = pos + 1; | ||
| 109 | else if (st == pos) | ||
| 110 | st++; | ||
| 111 | } | ||
| 112 | pos++; | ||
| 113 | } | ||
| 114 | if (lastnonsp > st) | ||
| 115 | toCanonical(s.substring(st, lastnonsp)); | ||
| 116 | } | ||
| 117 | |||
| 118 | public void from(String s) throws IOException { | ||
| 119 | if (s.startsWith("<")) | ||
| 120 | issueCommand("mail from: " + s + "\r\n", 250); | ||
| 121 | else | ||
| 122 | issueCommand("mail from: <" + s + ">\r\n", 250); | ||
| 123 | } | ||
| 124 | |||
| 125 | /** open a SMTP connection to host <i>host</i>. */ | ||
| 126 | private void openServer(String host) throws IOException { | ||
| 127 | mailhost = host; | ||
| 128 | openServer(mailhost, 25); | ||
| 129 | issueCommand("helo "+InetAddress.getLocalHost().getHostName()+"\r\n", 250); | ||
| 130 | } | ||
| 131 | |||
| 132 | public PrintStream startMessage() throws IOException { | ||
| 133 | issueCommand("data\r\n", 354); | ||
| 134 | try { | ||
| 135 | message = new SmtpPrintStream(serverOutput, this); | ||
| 136 | } catch (UnsupportedEncodingException e) { | ||
| 137 | throw new InternalError(encoding+" encoding not found"); | ||
| 138 | } | ||
| 139 | return message; | ||
| 140 | } | ||
| 141 | |||
| 142 | void closeMessage() throws IOException { | ||
| 143 | if (message != null) | ||
| 144 | message.close(); | ||
| 145 | } | ||
| 146 | |||
| 147 | /** New SMTP client connected to host <i>host</i>. */ | ||
| 148 | public SmtpClient (String host) throws IOException { | ||
| 149 | super(); | ||
| 150 | if (host != null) { | ||
| 151 | try { | ||
| 152 | openServer(host); | ||
| 153 | mailhost = host; | ||
| 154 | return; | ||
| 155 | } catch(Exception e) { | ||
| 156 | } | ||
| 157 | } | ||
| 158 | try { | ||
| 159 | String s; | ||
| 160 | mailhost = java.security.AccessController.doPrivileged( | ||
| 161 | new sun.security.action.GetPropertyAction("mail.host")); | ||
| 162 | if (mailhost != null) { | ||
| 163 | openServer(mailhost); | ||
| 164 | return; | ||
| 165 | } | ||
| 166 | } catch(Exception e) { | ||
| 167 | } | ||
| 168 | try { | ||
| 169 | mailhost = "localhost"; | ||
| 170 | openServer(mailhost); | ||
| 171 | } catch(Exception e) { | ||
| 172 | mailhost = "mailhost"; | ||
| 173 | openServer(mailhost); | ||
| 174 | } | ||
| 175 | } | ||
| 176 | |||
| 177 | /** Create an uninitialized SMTP client. */ | ||
| 178 | public SmtpClient () throws IOException { | ||
| 179 | this(null); | ||
| 180 | } | ||
| 181 | |||
| 182 | public SmtpClient(int to) throws IOException { | ||
| 183 | super(); | ||
| 184 | setConnectTimeout(to); | ||
| 185 | try { | ||
| 186 | String s; | ||
| 187 | mailhost = java.security.AccessController.doPrivileged( | ||
| 188 | new sun.security.action.GetPropertyAction("mail.host")); | ||
| 189 | if (mailhost != null) { | ||
| 190 | openServer(mailhost); | ||
| 191 | return; | ||
| 192 | } | ||
| 193 | } catch(Exception e) { | ||
| 194 | } | ||
| 195 | try { | ||
| 196 | mailhost = "localhost"; | ||
| 197 | openServer(mailhost); | ||
| 198 | } catch(Exception e) { | ||
| 199 | mailhost = "mailhost"; | ||
| 200 | openServer(mailhost); | ||
| 201 | } | ||
| 202 | } | ||
| 203 | |||
| 204 | public String getMailHost() { | ||
| 205 | return mailhost; | ||
| 206 | } | ||
| 207 | |||
| 208 | String getEncoding () { | ||
| 209 | return encoding; | ||
| 210 | } | ||
| 211 | } | ||
| 212 | |||
| 213 | class SmtpPrintStream extends java.io.PrintStream { | ||
| 214 | private SmtpClient target; | ||
| 215 | private int lastc = '\n'; | ||
| 216 | |||
| 217 | SmtpPrintStream (OutputStream fos, SmtpClient cl) throws UnsupportedEncodingException { | ||
| 218 | super(fos, false, cl.getEncoding()); | ||
| 219 | target = cl; | ||
| 220 | } | ||
| 221 | |||
| 222 | public void close() { | ||
| 223 | if (target == null) | ||
| 224 | return; | ||
| 225 | if (lastc != '\n') { | ||
| 226 | write('\n'); | ||
| 227 | } | ||
| 228 | try { | ||
| 229 | target.issueCommand(".\r\n", 250); | ||
| 230 | target.message = null; | ||
| 231 | out = null; | ||
| 232 | target = null; | ||
| 233 | } catch (IOException e) { | ||
| 234 | } | ||
| 235 | } | ||
| 236 | |||
| 237 | public void write(int b) { | ||
| 238 | try { | ||
| 239 | // quote a dot at the beginning of a line | ||
| 240 | if (lastc == '\n' && b == '.') { | ||
| 241 | out.write('.'); | ||
| 242 | } | ||
| 243 | |||
| 244 | // translate NL to CRLF | ||
| 245 | if (b == '\n' && lastc != '\r') { | ||
| 246 | out.write('\r'); | ||
| 247 | } | ||
| 248 | out.write(b); | ||
| 249 | lastc = b; | ||
| 250 | } catch (IOException e) { | ||
| 251 | } | ||
| 252 | } | ||
| 253 | |||
| 254 | public void write(byte b[], int off, int len) { | ||
| 255 | try { | ||
| 256 | int lc = lastc; | ||
| 257 | while (--len >= 0) { | ||
| 258 | int c = b[off++]; | ||
| 259 | |||
| 260 | // quote a dot at the beginning of a line | ||
| 261 | if (lc == '\n' && c == '.') | ||
| 262 | out.write('.'); | ||
| 263 | |||
| 264 | // translate NL to CRLF | ||
| 265 | if (c == '\n' && lc != '\r') { | ||
| 266 | out.write('\r'); | ||
| 267 | } | ||
| 268 | out.write(c); | ||
| 269 | lc = c; | ||
| 270 | } | ||
| 271 | lastc = lc; | ||
| 272 | } catch (IOException e) { | ||
| 273 | } | ||
| 274 | } | ||
| 275 | public void print(String s) { | ||
| 276 | int len = s.length(); | ||
| 277 | for (int i = 0; i < len; i++) { | ||
| 278 | write(s.charAt(i)); | ||
| 279 | } | ||
| 280 | } | ||
| 281 | } | ||