1#ifndef __SMTP_H
2#define __SMTP_H
3/***************************************************************************
4 *                                  _   _ ____  _
5 *  Project                     ___| | | |  _ \| |
6 *                             / __| | | | |_) | |
7 *                            | (__| |_| |  _ <| |___
8 *                             \___|\___/|_| \_\_____|
9 *
10 * Copyright (C) 2009 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
11 *
12 * This software is licensed as described in the file COPYING, which
13 * you should have received as part of this distribution. The terms
14 * are also available at http://curl.haxx.se/docs/copyright.html.
15 *
16 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
17 * copies of the Software, and permit persons to whom the Software is
18 * furnished to do so, under the terms of the COPYING file.
19 *
20 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
21 * KIND, either express or implied.
22 *
23 ***************************************************************************/
24
25#include "pingpong.h"
26
27/****************************************************************************
28 * SMTP unique setup
29 ***************************************************************************/
30typedef enum {
31  SMTP_STOP,        /* do nothing state, stops the state machine */
32  SMTP_SERVERGREET, /* waiting for the initial greeting immediately after
33                       a connect */
34  SMTP_EHLO,
35  SMTP_HELO,
36  SMTP_STARTTLS,
37  SMTP_UPGRADETLS, /* asynchronously upgrade the connection to SSL/TLS
38                      (multi mode only) */
39  SMTP_AUTHPLAIN,
40  SMTP_AUTHLOGIN,
41  SMTP_AUTHPASSWD,
42  SMTP_AUTHCRAM,
43  SMTP_AUTH,
44  SMTP_MAIL, /* MAIL FROM */
45  SMTP_RCPT, /* RCPT TO */
46  SMTP_DATA,
47  SMTP_POSTDATA,
48  SMTP_QUIT,
49  SMTP_LAST  /* never used */
50} smtpstate;
51
52/* smtp_conn is used for struct connection-oriented data in the connectdata
53   struct */
54struct smtp_conn {
55  struct pingpong pp;
56  char *domain;    /* what to send in the EHLO */
57  size_t eob;         /* number of bytes of the EOB (End Of Body) that has been
58                         received thus far */
59  unsigned int authmechs;       /* Accepted authentication methods. */
60  smtpstate state; /* always use smtp.c:state() to change state! */
61  struct curl_slist *rcpt;
62  bool ssldone; /* is connect() over SSL done? only relevant in multi mode */
63};
64
65/* Authentication mechanism flags. */
66#define SMTP_AUTH_LOGIN         0x0001
67#define SMTP_AUTH_PLAIN         0x0002
68#define SMTP_AUTH_CRAM_MD5      0x0004
69#define SMTP_AUTH_DIGEST_MD5    0x0008
70#define SMTP_AUTH_GSSAPI        0x0010
71#define SMTP_AUTH_EXTERNAL      0x0020
72
73extern const struct Curl_handler Curl_handler_smtp;
74extern const struct Curl_handler Curl_handler_smtps;
75
76/* this is the 5-bytes End-Of-Body marker for SMTP */
77#define SMTP_EOB "\x0d\x0a\x2e\x0d\x0a"
78#define SMTP_EOB_LEN 5
79
80/* if found in data, replace it with this string instead */
81#define SMTP_EOB_REPL "\x0d\x0a\x2e\x2e"
82#define SMTP_EOB_REPL_LEN 4
83
84CURLcode Curl_smtp_escape_eob(struct connectdata *conn, ssize_t nread);
85
86#endif /* __SMTP_H */
87