1 | #ifndef HEADER_CURL_SMTP_H |
2 | #define |
3 | /*************************************************************************** |
4 | * _ _ ____ _ |
5 | * Project ___| | | | _ \| | |
6 | * / __| | | | |_) | | |
7 | * | (__| |_| | _ <| |___ |
8 | * \___|\___/|_| \_\_____| |
9 | * |
10 | * Copyright (C) 2009 - 2019, 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 https://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 | #include "curl_sasl.h" |
27 | |
28 | /**************************************************************************** |
29 | * SMTP unique setup |
30 | ***************************************************************************/ |
31 | typedef enum { |
32 | SMTP_STOP, /* do nothing state, stops the state machine */ |
33 | SMTP_SERVERGREET, /* waiting for the initial greeting immediately after |
34 | a connect */ |
35 | SMTP_EHLO, |
36 | SMTP_HELO, |
37 | SMTP_STARTTLS, |
38 | SMTP_UPGRADETLS, /* asynchronously upgrade the connection to SSL/TLS |
39 | (multi mode only) */ |
40 | SMTP_AUTH, |
41 | SMTP_COMMAND, /* VRFY, EXPN, NOOP, RSET and HELP */ |
42 | SMTP_MAIL, /* MAIL FROM */ |
43 | SMTP_RCPT, /* RCPT TO */ |
44 | SMTP_DATA, |
45 | SMTP_POSTDATA, |
46 | SMTP_QUIT, |
47 | SMTP_LAST /* never used */ |
48 | } smtpstate; |
49 | |
50 | /* This SMTP struct is used in the Curl_easy. All SMTP data that is |
51 | connection-oriented must be in smtp_conn to properly deal with the fact that |
52 | perhaps the Curl_easy is changed between the times the connection is |
53 | used. */ |
54 | struct SMTP { |
55 | curl_pp_transfer transfer; |
56 | char *custom; /* Custom Request */ |
57 | struct curl_slist *rcpt; /* Recipient list */ |
58 | size_t eob; /* Number of bytes of the EOB (End Of Body) that |
59 | have been received so far */ |
60 | bool trailing_crlf; /* Specifies if the tailing CRLF is present */ |
61 | }; |
62 | |
63 | /* smtp_conn is used for struct connection-oriented data in the connectdata |
64 | struct */ |
65 | struct smtp_conn { |
66 | struct pingpong pp; |
67 | smtpstate state; /* Always use smtp.c:state() to change state! */ |
68 | bool ssldone; /* Is connect() over SSL done? */ |
69 | char *domain; /* Client address/name to send in the EHLO */ |
70 | struct SASL sasl; /* SASL-related storage */ |
71 | bool tls_supported; /* StartTLS capability supported by server */ |
72 | bool size_supported; /* If server supports SIZE extension according to |
73 | RFC 1870 */ |
74 | bool auth_supported; /* AUTH capability supported by server */ |
75 | }; |
76 | |
77 | extern const struct Curl_handler Curl_handler_smtp; |
78 | extern const struct Curl_handler Curl_handler_smtps; |
79 | |
80 | /* this is the 5-bytes End-Of-Body marker for SMTP */ |
81 | #define SMTP_EOB "\x0d\x0a\x2e\x0d\x0a" |
82 | #define SMTP_EOB_LEN 5 |
83 | #define SMTP_EOB_FIND_LEN 3 |
84 | |
85 | /* if found in data, replace it with this string instead */ |
86 | #define SMTP_EOB_REPL "\x0d\x0a\x2e\x2e" |
87 | #define SMTP_EOB_REPL_LEN 4 |
88 | |
89 | CURLcode Curl_smtp_escape_eob(struct connectdata *conn, const ssize_t nread); |
90 | |
91 | #endif /* HEADER_CURL_SMTP_H */ |
92 | |