1 #ifndef __SMTP_H
2 #define __SMTP_H
3 /***************************************************************************
4  *                                  _   _ ____  _
5  *  Project                     ___| | | |  _ \| |
6  *                             / __| | | | |_) | |
7  *                            | (__| |_| |  _ <| |___
8  *                             \___|\___/|_| \_\_____|
9  *
10  * Copyright (C) 2009 - 2010, 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  ***************************************************************************/
30 typedef 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 (multi mode only) */
38   SMTP_AUTHPLAIN,
39   SMTP_AUTHLOGIN,
40   SMTP_AUTHPASSWD,
41   SMTP_AUTHCRAM,
42   SMTP_AUTH,
43   SMTP_MAIL, /* MAIL FROM */
44   SMTP_RCPT, /* RCPT TO */
45   SMTP_DATA,
46   SMTP_POSTDATA,
47   SMTP_QUIT,
48   SMTP_LAST  /* never used */
49 } smtpstate;
50 
51 /* smtp_conn is used for struct connection-oriented data in the connectdata
52    struct */
53 struct smtp_conn {
54   struct pingpong pp;
55   char *domain;    /* what to send in the EHLO */
56   size_t eob;         /* number of bytes of the EOB (End Of Body) that has been
57                          received thus far */
58   unsigned int authmechs;       /* Accepted authentication methods. */
59   smtpstate state; /* always use smtp.c:state() to change state! */
60   struct curl_slist *rcpt;
61   bool ssldone; /* is connect() over SSL done? only relevant in multi mode */
62 };
63 
64 /* Authentication mechanism flags. */
65 #define SMTP_AUTH_LOGIN         0x0001
66 #define SMTP_AUTH_PLAIN         0x0002
67 #define SMTP_AUTH_CRAM_MD5      0x0004
68 #define SMTP_AUTH_DIGEST_MD5    0x0008
69 #define SMTP_AUTH_GSSAPI        0x0010
70 #define SMTP_AUTH_EXTERNAL      0x0020
71 
72 extern const struct Curl_handler Curl_handler_smtp;
73 extern const struct Curl_handler Curl_handler_smtps;
74 
75 /* this is the 5-bytes End-Of-Body marker for SMTP */
76 #define SMTP_EOB "\x0d\x0a\x2e\x0d\x0a"
77 #define SMTP_EOB_LEN 5
78 
79 /* if found in data, replace it with this string instead */
80 #define SMTP_EOB_REPL "\x0d\x0a\x2e\x2e"
81 #define SMTP_EOB_REPL_LEN 4
82 
83 CURLcode Curl_smtp_escape_eob(struct connectdata *conn, ssize_t nread);
84 
85 #endif /* __SMTP_H */
86